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82,676 | **Context:**
In my world, society has progressed to 2050-ish, a new nation rose on Greenland led by an aristocratic community called the "Grey".
Numbering at 1000 or so, the grey is a group of highly intelligent, genetically enhanced (with slight improvement in brain power and longevity) religious devotees. Details about their religion is unimportant, but it is not at odds with science/progress, and its overall effect is that, among true believers, this religion inspires a sense of duty, and gives the Grey a condescending attitude towards nearly all outsiders, seeing them as hedonistic, wasteful primitives.
Also, the Grey exercise their power by collecting a small percentage of national tax (which they share among themselves from a common pool), directly controlling the army and hold veto rights over the more "normal" political activity performed by a mostly democratic government.
**Problem:**
When the Grey replaces dead members, they prefer using their own children (which they produce with calculated care) however, it is possible that the children they raise are not as religious as their parents or are unwilling to act as rulers. This means that either many children have to be produced so that some may suffice for future leadership, and it also generates the problem with the under-performing children, who may become a factor of instability.
If it is necessary to replenish the Grey's members by assimilating outsiders, the group may compromise its ideological/genetic purity and the sense of separation from the rest. It is also difficult to test the new members for their loyalty, more specifically, it's difficult to tell whether the new members are truly assimilated with the Grey's ideology or simply pretending to be so as to secure power.
**Proposed solution:**
I am thinking that culling the Grey's own children for sufficient replacement will work, and the under-performing children can be put in a sort of "pacified confinement" which is equivalent to a highly comfortable prison where the inmates are stripped of all power and cut-off from communication with the outside world.
Nevertheless, I am not confident that this will completely dispel the inmates' capacity as factors of instability, and perhaps a disproportionate number of Grey's children will voluntarily choose this lifestyle, forming a significant burden on the Grey. | 2017/06/03 | [
"https://worldbuilding.stackexchange.com/questions/82676",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/26674/"
] | **Short version of solution : Mid Ranking Management.**
Long version : lots of things I don't like.
>
> In my world, society has progressed to 2050-ish, a new nation rose on Greenland led by an aristocratic community called the "Grey".
>
>
>
Or something more in keeping with the national language and culture, perhaps. "The Grey" seems a rather uninspiring name for a group leading anyone. It conveys no meaning or association with any historically or socially important ideal. It may be the sort of name an author might pick, but it's not going to help get you to power and at some point you have to start not in power and rise to power.
"The Grey" is a dark name and would convey, if anything, a sense that they might be dangerous. It's not an accident that groups tend to go for names like "New Dawn", "Shining Path and so on. Positive spin.
Rethink the name.
>
> Numbering at 1000 or so
>
>
>
So barely enough to populate even the most senior positions in an administration.
>
> , the grey is a group of highly intelligent
>
>
>
In what way ?
Intelligence can take many forms and if they're just randomly intelligent and individual members can funnel their energies into medicine, art, music, literature, games, programming, engineering and so on, that won't really give you many of the 1000 who are actually skilled at the skills of politics and economics that they'll actually desperately need as a small group to survive.
>
> , genetically enhanced (with slight improvement in brain power and longevity)
>
>
>
Slight ? So if I concentrate hard I can out think them ? So the top 1% of the million or more population can match them or better them ?
They'd better be well beyond "slight".
Longevity isn't much use if you're a minority group that can find itself shot against a wall in a revolution.
So you want long lived individuals or a long lived clan ?
>
> religious devotees.
>
>
>
Dogma rears it head.
Dogma is a weakness. Any form of religion is, by definition, a factor that will be considered reactionary by people outside that religion.
All a religion does is make it focus for resentment. "Why are we being led by this minority ?" is going to be followed, eventually by "Hang the Bar Stewards !". History is pretty clear on this point.
If you have a religion and you want to hold power, it must be a religion the ordinary populace are comfortable with.
Which leads us to ...
>
> Details about their religion is unimportant,
>
>
>
Yes, they are. Details of a practically minute nature are responsible for some of the bloodiest and most ruthlessly pursued wars in history. The devil is in the detail.
>
> but it is not at odds with science/progress,
>
>
>
It must be. Religion requires belief without evidence. There will always be a point where this clashes with science, which require no belief unless there's evidence.
There will always be a point of contention, usually many, between these two fundamentally different outlooks.
>
> and its overall effect is that, among true believers,
>
>
>
Question : how do you tell a true believer from someone who just claims they are ?
Answer : tell them you'll spare the ones who relinquish their faith and burn the believers are the stake.
A system, I might add, which has been used extensively by humans and, hard as it is to believe, the true believers often will go to the stake and you're left with the cynics to feed.
Another way of viewing this is Who Polices The Police ? Who says you're a true believer and how do you prove it ?
>
> this religion inspires a sense of duty,
>
>
>
One man's duty is another man's holocaust. Dogma is a problem and, again, who decides what's duty and what's unworthy personal obsession ?
>
> and gives the Grey a condescending attitude towards nearly all outsiders, seeing them as hedonistic, wasteful primitives.
>
>
>
Surely they'd start seeing each other that way as well ?
Normal greed, envy, lust and all those other human emotions will lead you to look at not just your servant, but your master, as a waste of space you could be using better. :-)
>
> Also, the Grey exercise their power by collecting a small percentage of national tax (which they share among themselves from a common pool),
>
>
>
Bet that's popular with the vast majority they depend on to not rush teh palace gates !
>
> directly controlling the army
>
>
>
1000 people don't control an army. They control, at best, 1000 people.
The army will be the de facto rulers and, as history proves, if you depend on the army to keep you in power, you're just a moving target.
Something other than a terrible name and a condescending manner is going to be required to stop all these armed and highly trained people from just turning on you.
>
> and hold veto rights over the more "normal" political activity performed by a mostly democratic government.
>
>
>
A mob also holds a veto right. Usually in both hands.
A minority religious caste creaming money off the top and who cannot be democratically removed is, in no way, going to successfully pass itself or it's society off as a "mostly democratic" government.
If it looks like a nobility, acts like a nobility and swims like a nobility in it's private swimming pool, it's a nobility.
>
> When the Grey replaces dead members, they prefer using their own children (which they produce with calculated care) however, it is possible that the children they raise are not as religious as their parents or are unwilling to act as rulers.
>
>
>
So not produced with much calculating care at all.
>
> This means that either many children have to be produced so that some may suffice for future leadership, and it also generates the problem with the under-performing children, who may become a factor of instability.
>
>
>
Actually just the ambition of the ones being groomed for future leadership is sufficient to create a lot more instability than anything else.
The ones who don't have ambition and under-perform are, by definition, no threat at all to the ones who have it and do perform.
They are a non-problem who'll be happy to get by on a basic "better than average" job with enough trappings of power to not need real power. Perfect mid ranking managers could hardly be described better.
>
> If it is necessary to replenish the Grey's members by assimilating outsiders, the group may compromise its ideological/genetic purity and the sense of separation from the rest.
>
>
>
That'd be the same sense of separation that will find them waiting for execution after the revolution, I take it. :-)
>
> It is also difficult to test the new members for their loyalty, more specifically, it's difficult to tell whether the new members are truly assimilated with the Grey's ideology or simply pretending to be so as to secure power.
>
>
>
As I've pointed out, it's just as difficult to tell what's really going on inside the mind of all these condescending, ambitious people.
It's fundamentally impossible to avoid this problem and still have any free will in a group.
>
> Proposed solution:
>
>
>
There is no perfect solution.
You need a system of exams, formal and legally binding (on both sides) to test for ability, inclination and deception.
How do you test for deception : you use good interrogation methods (and that's the talking and listening type, not the idiotic buckets of water nonsense). You use detectives to check things. You use, in fact, a good Intelligence service. The exams just test technical competence and knowledge. You'd probably also test for ability to lead - check out how the military do that, because if there's one sphere of human endeavor that requires a better than average success at finding good leaders, it's the military !
>
> I am thinking that culling the Grey's own children for sufficient replacement will work, and the under-performing children can be put in a sort of "pacified confinement" which is equivalent to a highly comfortable prison where the inmates are stripped of all power and cut-off from communication with the outside world.
>
>
>
I'll say this again : mid ranking managers. Practically the same thing without the weird connotation of "culling" - an unfortunate choice of word.
>
> Nevertheless, I am not confident that this will completely dispel the inmates' capacity as factors of instability, and perhaps a disproportionate number of Grey's children will voluntarily choose this lifestyle, forming a significant burden on the Grey.
>
>
>
Gotta have mid ranking managers with little or no real power. Planet's full of them and while they're a nuisance and get in the way really powerful people (like engineers) they're not going to be able to form and execute any plan, either singly or in a group, that could possibly destabilize anything.
No revolution was ever started by a mid ranking manager. Well, probably. | A religious order of aristocrats would educate their children in a strict way that encourages memorization and conformity. People need two things to be happy: security and love. Deprived the children of parental contact and have them treated warmly by their care-givers only when they follow "the rules". Have the care-givers isolate a child who fails to meet expectations. Allow only the religious doctrine which they are being thought to provide comfort and hope.
Children of inattentive or distant parents grow to seek approval of authority figures or rebel. Those that rebel would do so by the time puberty sets in and could be culled. This would not be a problem if they are never allowed to bond with their parents and vice versa. Since the child has been taken at a young age if not at birth, the parents would simply chose to believe that one of the successful children was theirs and refuse to admit that their genes could have produced one of the bad eggs. Once grown and given social standing and influence, the chances of one of them questioning the status quo would be negligible.
The real problem of socially engineering a caste of people with such rigid prerequisites is that the greys would all lack empathy and social skills. Beyond the completion of their necessary duties, they would be hedonistic robots with an unbalanced view of self. Spoiler (you would just be copying the Vatican and the religious education of the clergy in the middle ages). |
82,676 | **Context:**
In my world, society has progressed to 2050-ish, a new nation rose on Greenland led by an aristocratic community called the "Grey".
Numbering at 1000 or so, the grey is a group of highly intelligent, genetically enhanced (with slight improvement in brain power and longevity) religious devotees. Details about their religion is unimportant, but it is not at odds with science/progress, and its overall effect is that, among true believers, this religion inspires a sense of duty, and gives the Grey a condescending attitude towards nearly all outsiders, seeing them as hedonistic, wasteful primitives.
Also, the Grey exercise their power by collecting a small percentage of national tax (which they share among themselves from a common pool), directly controlling the army and hold veto rights over the more "normal" political activity performed by a mostly democratic government.
**Problem:**
When the Grey replaces dead members, they prefer using their own children (which they produce with calculated care) however, it is possible that the children they raise are not as religious as their parents or are unwilling to act as rulers. This means that either many children have to be produced so that some may suffice for future leadership, and it also generates the problem with the under-performing children, who may become a factor of instability.
If it is necessary to replenish the Grey's members by assimilating outsiders, the group may compromise its ideological/genetic purity and the sense of separation from the rest. It is also difficult to test the new members for their loyalty, more specifically, it's difficult to tell whether the new members are truly assimilated with the Grey's ideology or simply pretending to be so as to secure power.
**Proposed solution:**
I am thinking that culling the Grey's own children for sufficient replacement will work, and the under-performing children can be put in a sort of "pacified confinement" which is equivalent to a highly comfortable prison where the inmates are stripped of all power and cut-off from communication with the outside world.
Nevertheless, I am not confident that this will completely dispel the inmates' capacity as factors of instability, and perhaps a disproportionate number of Grey's children will voluntarily choose this lifestyle, forming a significant burden on the Grey. | 2017/06/03 | [
"https://worldbuilding.stackexchange.com/questions/82676",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/26674/"
] | **Short version of solution : Mid Ranking Management.**
Long version : lots of things I don't like.
>
> In my world, society has progressed to 2050-ish, a new nation rose on Greenland led by an aristocratic community called the "Grey".
>
>
>
Or something more in keeping with the national language and culture, perhaps. "The Grey" seems a rather uninspiring name for a group leading anyone. It conveys no meaning or association with any historically or socially important ideal. It may be the sort of name an author might pick, but it's not going to help get you to power and at some point you have to start not in power and rise to power.
"The Grey" is a dark name and would convey, if anything, a sense that they might be dangerous. It's not an accident that groups tend to go for names like "New Dawn", "Shining Path and so on. Positive spin.
Rethink the name.
>
> Numbering at 1000 or so
>
>
>
So barely enough to populate even the most senior positions in an administration.
>
> , the grey is a group of highly intelligent
>
>
>
In what way ?
Intelligence can take many forms and if they're just randomly intelligent and individual members can funnel their energies into medicine, art, music, literature, games, programming, engineering and so on, that won't really give you many of the 1000 who are actually skilled at the skills of politics and economics that they'll actually desperately need as a small group to survive.
>
> , genetically enhanced (with slight improvement in brain power and longevity)
>
>
>
Slight ? So if I concentrate hard I can out think them ? So the top 1% of the million or more population can match them or better them ?
They'd better be well beyond "slight".
Longevity isn't much use if you're a minority group that can find itself shot against a wall in a revolution.
So you want long lived individuals or a long lived clan ?
>
> religious devotees.
>
>
>
Dogma rears it head.
Dogma is a weakness. Any form of religion is, by definition, a factor that will be considered reactionary by people outside that religion.
All a religion does is make it focus for resentment. "Why are we being led by this minority ?" is going to be followed, eventually by "Hang the Bar Stewards !". History is pretty clear on this point.
If you have a religion and you want to hold power, it must be a religion the ordinary populace are comfortable with.
Which leads us to ...
>
> Details about their religion is unimportant,
>
>
>
Yes, they are. Details of a practically minute nature are responsible for some of the bloodiest and most ruthlessly pursued wars in history. The devil is in the detail.
>
> but it is not at odds with science/progress,
>
>
>
It must be. Religion requires belief without evidence. There will always be a point where this clashes with science, which require no belief unless there's evidence.
There will always be a point of contention, usually many, between these two fundamentally different outlooks.
>
> and its overall effect is that, among true believers,
>
>
>
Question : how do you tell a true believer from someone who just claims they are ?
Answer : tell them you'll spare the ones who relinquish their faith and burn the believers are the stake.
A system, I might add, which has been used extensively by humans and, hard as it is to believe, the true believers often will go to the stake and you're left with the cynics to feed.
Another way of viewing this is Who Polices The Police ? Who says you're a true believer and how do you prove it ?
>
> this religion inspires a sense of duty,
>
>
>
One man's duty is another man's holocaust. Dogma is a problem and, again, who decides what's duty and what's unworthy personal obsession ?
>
> and gives the Grey a condescending attitude towards nearly all outsiders, seeing them as hedonistic, wasteful primitives.
>
>
>
Surely they'd start seeing each other that way as well ?
Normal greed, envy, lust and all those other human emotions will lead you to look at not just your servant, but your master, as a waste of space you could be using better. :-)
>
> Also, the Grey exercise their power by collecting a small percentage of national tax (which they share among themselves from a common pool),
>
>
>
Bet that's popular with the vast majority they depend on to not rush teh palace gates !
>
> directly controlling the army
>
>
>
1000 people don't control an army. They control, at best, 1000 people.
The army will be the de facto rulers and, as history proves, if you depend on the army to keep you in power, you're just a moving target.
Something other than a terrible name and a condescending manner is going to be required to stop all these armed and highly trained people from just turning on you.
>
> and hold veto rights over the more "normal" political activity performed by a mostly democratic government.
>
>
>
A mob also holds a veto right. Usually in both hands.
A minority religious caste creaming money off the top and who cannot be democratically removed is, in no way, going to successfully pass itself or it's society off as a "mostly democratic" government.
If it looks like a nobility, acts like a nobility and swims like a nobility in it's private swimming pool, it's a nobility.
>
> When the Grey replaces dead members, they prefer using their own children (which they produce with calculated care) however, it is possible that the children they raise are not as religious as their parents or are unwilling to act as rulers.
>
>
>
So not produced with much calculating care at all.
>
> This means that either many children have to be produced so that some may suffice for future leadership, and it also generates the problem with the under-performing children, who may become a factor of instability.
>
>
>
Actually just the ambition of the ones being groomed for future leadership is sufficient to create a lot more instability than anything else.
The ones who don't have ambition and under-perform are, by definition, no threat at all to the ones who have it and do perform.
They are a non-problem who'll be happy to get by on a basic "better than average" job with enough trappings of power to not need real power. Perfect mid ranking managers could hardly be described better.
>
> If it is necessary to replenish the Grey's members by assimilating outsiders, the group may compromise its ideological/genetic purity and the sense of separation from the rest.
>
>
>
That'd be the same sense of separation that will find them waiting for execution after the revolution, I take it. :-)
>
> It is also difficult to test the new members for their loyalty, more specifically, it's difficult to tell whether the new members are truly assimilated with the Grey's ideology or simply pretending to be so as to secure power.
>
>
>
As I've pointed out, it's just as difficult to tell what's really going on inside the mind of all these condescending, ambitious people.
It's fundamentally impossible to avoid this problem and still have any free will in a group.
>
> Proposed solution:
>
>
>
There is no perfect solution.
You need a system of exams, formal and legally binding (on both sides) to test for ability, inclination and deception.
How do you test for deception : you use good interrogation methods (and that's the talking and listening type, not the idiotic buckets of water nonsense). You use detectives to check things. You use, in fact, a good Intelligence service. The exams just test technical competence and knowledge. You'd probably also test for ability to lead - check out how the military do that, because if there's one sphere of human endeavor that requires a better than average success at finding good leaders, it's the military !
>
> I am thinking that culling the Grey's own children for sufficient replacement will work, and the under-performing children can be put in a sort of "pacified confinement" which is equivalent to a highly comfortable prison where the inmates are stripped of all power and cut-off from communication with the outside world.
>
>
>
I'll say this again : mid ranking managers. Practically the same thing without the weird connotation of "culling" - an unfortunate choice of word.
>
> Nevertheless, I am not confident that this will completely dispel the inmates' capacity as factors of instability, and perhaps a disproportionate number of Grey's children will voluntarily choose this lifestyle, forming a significant burden on the Grey.
>
>
>
Gotta have mid ranking managers with little or no real power. Planet's full of them and while they're a nuisance and get in the way really powerful people (like engineers) they're not going to be able to form and execute any plan, either singly or in a group, that could possibly destabilize anything.
No revolution was ever started by a mid ranking manager. Well, probably. | So, what you want is the English house of Lords. Those people are not genetically engineered and they still like to live the posh life and get privilege because their grand-grandx24grandfather 600 years ago had a dinner with a king.
Of course, from time to time there is one person who likes to live a common life. Fortunately they usually have more than one child so the emptiness is not permanent.
Oh, and also, they usually go to the army and become important figures in the command chain.
And the sense of duty is derived from a very low place. Cover your ass or communists will take your castles and palaces and money. They learned the lesson when the French part of the family was given a nice view from the guillotine.
Also your problem is only a problem if you **NEED** them to have exactly 657 members in the body. If you let the number be changeable to suit the able number your problem is non-existent. Source: The House of Lords. |
82,676 | **Context:**
In my world, society has progressed to 2050-ish, a new nation rose on Greenland led by an aristocratic community called the "Grey".
Numbering at 1000 or so, the grey is a group of highly intelligent, genetically enhanced (with slight improvement in brain power and longevity) religious devotees. Details about their religion is unimportant, but it is not at odds with science/progress, and its overall effect is that, among true believers, this religion inspires a sense of duty, and gives the Grey a condescending attitude towards nearly all outsiders, seeing them as hedonistic, wasteful primitives.
Also, the Grey exercise their power by collecting a small percentage of national tax (which they share among themselves from a common pool), directly controlling the army and hold veto rights over the more "normal" political activity performed by a mostly democratic government.
**Problem:**
When the Grey replaces dead members, they prefer using their own children (which they produce with calculated care) however, it is possible that the children they raise are not as religious as their parents or are unwilling to act as rulers. This means that either many children have to be produced so that some may suffice for future leadership, and it also generates the problem with the under-performing children, who may become a factor of instability.
If it is necessary to replenish the Grey's members by assimilating outsiders, the group may compromise its ideological/genetic purity and the sense of separation from the rest. It is also difficult to test the new members for their loyalty, more specifically, it's difficult to tell whether the new members are truly assimilated with the Grey's ideology or simply pretending to be so as to secure power.
**Proposed solution:**
I am thinking that culling the Grey's own children for sufficient replacement will work, and the under-performing children can be put in a sort of "pacified confinement" which is equivalent to a highly comfortable prison where the inmates are stripped of all power and cut-off from communication with the outside world.
Nevertheless, I am not confident that this will completely dispel the inmates' capacity as factors of instability, and perhaps a disproportionate number of Grey's children will voluntarily choose this lifestyle, forming a significant burden on the Grey. | 2017/06/03 | [
"https://worldbuilding.stackexchange.com/questions/82676",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/26674/"
] | Follow the model of the [Hutterites](https://en.wikipedia.org/wiki/Hutterite).
They are in many ways like your Grey: a community (a communistic community!) of religious devotees who marry among themselves, and who are possessed with a sense of purpose.
Hutterites have lots of children. Children are baptized into the church. Not all of them are. Some might not want to. Some don't make the cut. They do not have some penal colony for children of Hutterites who do not become part of the church. These kids grow up to be people outside the church: Catholics, or agnostics, or whatever they want to be.
The Grey can do the same as the Hutterites. They have lots of kids. Pay attention to them. Those who are willing and who make the cut can be Grey. The other kids are just regular people. I am sure the population of Greenland is not only the 1000 Grey. There are probably lots of other people doing the things people do. The Grey kids who grow up to be not Grey just mix in with the regular population.
From <http://www.hutterites.org>
>
> When young people feel ready to make a commitment to baptism, they
> meet with the senior minister and make a formal request. The minister
> brings this request to the whole brotherhood and if there are no
> objections, they are accepted for a probation period. Every Sunday
> afternoon for 6 to 7 weeks, the baptismal candidates visit each of the
> witness brothers who provides spiritual and religious teachings
> ranging in length from ten minutes to over an hour. Hutterites accept
> all 12 points of the Apostle’s Creed as Truth. All members publicly
> declare their belief in The Apostle’s Creed upon baptism.
>
>
> Can a non-Hutterite join a Hutterite colony A question that is often
> asked is whether or not an outsider can join a Hutterite colony. It
> has happened that outsiders or non-Hutterites join a Hutterite colony,
> but it is quite rare. Few Hutterite colony are open to outsider
> joining, but there are a handful who would consider it, depending on
> the candidate and the willingness of the candidate to adopt to the
> Hutterian norms. Over the year’s many people have attempted to become
> full members of the Hutterite community, but haven’t been successful
> for a variety of reasons.
>
>
> | A religious order of aristocrats would educate their children in a strict way that encourages memorization and conformity. People need two things to be happy: security and love. Deprived the children of parental contact and have them treated warmly by their care-givers only when they follow "the rules". Have the care-givers isolate a child who fails to meet expectations. Allow only the religious doctrine which they are being thought to provide comfort and hope.
Children of inattentive or distant parents grow to seek approval of authority figures or rebel. Those that rebel would do so by the time puberty sets in and could be culled. This would not be a problem if they are never allowed to bond with their parents and vice versa. Since the child has been taken at a young age if not at birth, the parents would simply chose to believe that one of the successful children was theirs and refuse to admit that their genes could have produced one of the bad eggs. Once grown and given social standing and influence, the chances of one of them questioning the status quo would be negligible.
The real problem of socially engineering a caste of people with such rigid prerequisites is that the greys would all lack empathy and social skills. Beyond the completion of their necessary duties, they would be hedonistic robots with an unbalanced view of self. Spoiler (you would just be copying the Vatican and the religious education of the clergy in the middle ages). |
82,676 | **Context:**
In my world, society has progressed to 2050-ish, a new nation rose on Greenland led by an aristocratic community called the "Grey".
Numbering at 1000 or so, the grey is a group of highly intelligent, genetically enhanced (with slight improvement in brain power and longevity) religious devotees. Details about their religion is unimportant, but it is not at odds with science/progress, and its overall effect is that, among true believers, this religion inspires a sense of duty, and gives the Grey a condescending attitude towards nearly all outsiders, seeing them as hedonistic, wasteful primitives.
Also, the Grey exercise their power by collecting a small percentage of national tax (which they share among themselves from a common pool), directly controlling the army and hold veto rights over the more "normal" political activity performed by a mostly democratic government.
**Problem:**
When the Grey replaces dead members, they prefer using their own children (which they produce with calculated care) however, it is possible that the children they raise are not as religious as their parents or are unwilling to act as rulers. This means that either many children have to be produced so that some may suffice for future leadership, and it also generates the problem with the under-performing children, who may become a factor of instability.
If it is necessary to replenish the Grey's members by assimilating outsiders, the group may compromise its ideological/genetic purity and the sense of separation from the rest. It is also difficult to test the new members for their loyalty, more specifically, it's difficult to tell whether the new members are truly assimilated with the Grey's ideology or simply pretending to be so as to secure power.
**Proposed solution:**
I am thinking that culling the Grey's own children for sufficient replacement will work, and the under-performing children can be put in a sort of "pacified confinement" which is equivalent to a highly comfortable prison where the inmates are stripped of all power and cut-off from communication with the outside world.
Nevertheless, I am not confident that this will completely dispel the inmates' capacity as factors of instability, and perhaps a disproportionate number of Grey's children will voluntarily choose this lifestyle, forming a significant burden on the Grey. | 2017/06/03 | [
"https://worldbuilding.stackexchange.com/questions/82676",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/26674/"
] | **Short version of solution : Mid Ranking Management.**
Long version : lots of things I don't like.
>
> In my world, society has progressed to 2050-ish, a new nation rose on Greenland led by an aristocratic community called the "Grey".
>
>
>
Or something more in keeping with the national language and culture, perhaps. "The Grey" seems a rather uninspiring name for a group leading anyone. It conveys no meaning or association with any historically or socially important ideal. It may be the sort of name an author might pick, but it's not going to help get you to power and at some point you have to start not in power and rise to power.
"The Grey" is a dark name and would convey, if anything, a sense that they might be dangerous. It's not an accident that groups tend to go for names like "New Dawn", "Shining Path and so on. Positive spin.
Rethink the name.
>
> Numbering at 1000 or so
>
>
>
So barely enough to populate even the most senior positions in an administration.
>
> , the grey is a group of highly intelligent
>
>
>
In what way ?
Intelligence can take many forms and if they're just randomly intelligent and individual members can funnel their energies into medicine, art, music, literature, games, programming, engineering and so on, that won't really give you many of the 1000 who are actually skilled at the skills of politics and economics that they'll actually desperately need as a small group to survive.
>
> , genetically enhanced (with slight improvement in brain power and longevity)
>
>
>
Slight ? So if I concentrate hard I can out think them ? So the top 1% of the million or more population can match them or better them ?
They'd better be well beyond "slight".
Longevity isn't much use if you're a minority group that can find itself shot against a wall in a revolution.
So you want long lived individuals or a long lived clan ?
>
> religious devotees.
>
>
>
Dogma rears it head.
Dogma is a weakness. Any form of religion is, by definition, a factor that will be considered reactionary by people outside that religion.
All a religion does is make it focus for resentment. "Why are we being led by this minority ?" is going to be followed, eventually by "Hang the Bar Stewards !". History is pretty clear on this point.
If you have a religion and you want to hold power, it must be a religion the ordinary populace are comfortable with.
Which leads us to ...
>
> Details about their religion is unimportant,
>
>
>
Yes, they are. Details of a practically minute nature are responsible for some of the bloodiest and most ruthlessly pursued wars in history. The devil is in the detail.
>
> but it is not at odds with science/progress,
>
>
>
It must be. Religion requires belief without evidence. There will always be a point where this clashes with science, which require no belief unless there's evidence.
There will always be a point of contention, usually many, between these two fundamentally different outlooks.
>
> and its overall effect is that, among true believers,
>
>
>
Question : how do you tell a true believer from someone who just claims they are ?
Answer : tell them you'll spare the ones who relinquish their faith and burn the believers are the stake.
A system, I might add, which has been used extensively by humans and, hard as it is to believe, the true believers often will go to the stake and you're left with the cynics to feed.
Another way of viewing this is Who Polices The Police ? Who says you're a true believer and how do you prove it ?
>
> this religion inspires a sense of duty,
>
>
>
One man's duty is another man's holocaust. Dogma is a problem and, again, who decides what's duty and what's unworthy personal obsession ?
>
> and gives the Grey a condescending attitude towards nearly all outsiders, seeing them as hedonistic, wasteful primitives.
>
>
>
Surely they'd start seeing each other that way as well ?
Normal greed, envy, lust and all those other human emotions will lead you to look at not just your servant, but your master, as a waste of space you could be using better. :-)
>
> Also, the Grey exercise their power by collecting a small percentage of national tax (which they share among themselves from a common pool),
>
>
>
Bet that's popular with the vast majority they depend on to not rush teh palace gates !
>
> directly controlling the army
>
>
>
1000 people don't control an army. They control, at best, 1000 people.
The army will be the de facto rulers and, as history proves, if you depend on the army to keep you in power, you're just a moving target.
Something other than a terrible name and a condescending manner is going to be required to stop all these armed and highly trained people from just turning on you.
>
> and hold veto rights over the more "normal" political activity performed by a mostly democratic government.
>
>
>
A mob also holds a veto right. Usually in both hands.
A minority religious caste creaming money off the top and who cannot be democratically removed is, in no way, going to successfully pass itself or it's society off as a "mostly democratic" government.
If it looks like a nobility, acts like a nobility and swims like a nobility in it's private swimming pool, it's a nobility.
>
> When the Grey replaces dead members, they prefer using their own children (which they produce with calculated care) however, it is possible that the children they raise are not as religious as their parents or are unwilling to act as rulers.
>
>
>
So not produced with much calculating care at all.
>
> This means that either many children have to be produced so that some may suffice for future leadership, and it also generates the problem with the under-performing children, who may become a factor of instability.
>
>
>
Actually just the ambition of the ones being groomed for future leadership is sufficient to create a lot more instability than anything else.
The ones who don't have ambition and under-perform are, by definition, no threat at all to the ones who have it and do perform.
They are a non-problem who'll be happy to get by on a basic "better than average" job with enough trappings of power to not need real power. Perfect mid ranking managers could hardly be described better.
>
> If it is necessary to replenish the Grey's members by assimilating outsiders, the group may compromise its ideological/genetic purity and the sense of separation from the rest.
>
>
>
That'd be the same sense of separation that will find them waiting for execution after the revolution, I take it. :-)
>
> It is also difficult to test the new members for their loyalty, more specifically, it's difficult to tell whether the new members are truly assimilated with the Grey's ideology or simply pretending to be so as to secure power.
>
>
>
As I've pointed out, it's just as difficult to tell what's really going on inside the mind of all these condescending, ambitious people.
It's fundamentally impossible to avoid this problem and still have any free will in a group.
>
> Proposed solution:
>
>
>
There is no perfect solution.
You need a system of exams, formal and legally binding (on both sides) to test for ability, inclination and deception.
How do you test for deception : you use good interrogation methods (and that's the talking and listening type, not the idiotic buckets of water nonsense). You use detectives to check things. You use, in fact, a good Intelligence service. The exams just test technical competence and knowledge. You'd probably also test for ability to lead - check out how the military do that, because if there's one sphere of human endeavor that requires a better than average success at finding good leaders, it's the military !
>
> I am thinking that culling the Grey's own children for sufficient replacement will work, and the under-performing children can be put in a sort of "pacified confinement" which is equivalent to a highly comfortable prison where the inmates are stripped of all power and cut-off from communication with the outside world.
>
>
>
I'll say this again : mid ranking managers. Practically the same thing without the weird connotation of "culling" - an unfortunate choice of word.
>
> Nevertheless, I am not confident that this will completely dispel the inmates' capacity as factors of instability, and perhaps a disproportionate number of Grey's children will voluntarily choose this lifestyle, forming a significant burden on the Grey.
>
>
>
Gotta have mid ranking managers with little or no real power. Planet's full of them and while they're a nuisance and get in the way really powerful people (like engineers) they're not going to be able to form and execute any plan, either singly or in a group, that could possibly destabilize anything.
No revolution was ever started by a mid ranking manager. Well, probably. | I would divide the country into three groups:
1. The Grey.
2. The military/police.
3. Everyone else.
Children of the Grey become officers in the military or the police. Children of current members of the military or the police may become officers as well, although most would stay in the ranks. Officers are expected to exemplify the ascetic nature of the Grey.
Everyone else can join the military or the police but few slots are available.
When a member of the Grey dies, one of the officers is chosen as a replacement. This might be a child of the Grey, of an officer, or of someone from the ranks.
This keeps the Grey on top. It gives them strong roots in the military and police. It allows for merit-based promotion. It does not allow for quick promotion, such that someone would have to live the ascetic lifestyle for years to reach the Grey. This would be hard for someone to fake for that length of time, particularly as their schooling would also have been monitored by the Grey. So a non-believer would likely be dismissed early.
People in the everyone else category can not themselves join the Grey. They can only join the military or police ranks. Their children can potentially join the Grey. |
310,515 | I am running an HP laptop (compaq 2510p) on Windows 7 32 bit that has a gigabit NIC. I am on an internal work network accessing a share on a server that also has a gigabit NIC. When I try to download an installation file I get a max of 200 kb/sec while my co-worker, who is running off of the same local switch in out office, gets at least 3-6 mb/sec transfer. My CPU and RAM stay below 50% and my network monitor in performance monitor stays below 5%. I have tried the same ethernet cable as my co-worker and he has no problems but I still do.
Edit: I am in the IT staff so I have access to change things, but I just started so I am not familiar with the network or how this laptop is set up. It was used by the person I replaced since he left a couple of months ago so I do not know what is left on here. I believe the network is 100MB/s but that my NIC is Gigabit. Basically since I am new to their setup I am just looking for general places to look since my boss is busy and isn't available very much.
Fixed: Turns out it was the card's speed option. It was set to 100MB/s full duplex but changing it to auto negotiate fixed it. | 2011/07/14 | [
"https://superuser.com/questions/310515",
"https://superuser.com",
"https://superuser.com/users/76165/"
] | I would try checking with your IT technician or Network Administrator before troubleshooting your connection with a coworker. They may be able to offer you a better answer much faster than your troubleshooting will. Typically the IT department does not like it when employees take things into their own hands as it causes more work in the end.
The causes could be many things, my best guesses would be:
* Bad NIC driver.
* Your MAC address may be throttled at an intermediate level due to your past internet usage (ie. Access-level switch, check with IT) despite the download being internal.
* Bad switchport
* Third party software on your machine may be inspecting traffic which can lower performance.
To be quite honest, both transfer rates are fairly poor for a gigabit network. 10M/s and upward is average. | I believe you may be having may be having issues with your computer trying to connect to a network location that is no longer there. This causes time-outs and slowness. I fixed this issue on a computer just yesterday.
Try the following:
1. Run CCleaner, which will clean out recently run caches (like the list of recently opened items in MS Word). While you are there, you could also run the registry cleaner for good measure.
2. Check to see if you have any mapped drives that do not respond when you click on them. If so, right click, and disconnect them.
3. Clean out any network shortcuts to non-existent server locations. In Windows 7, it is located here:
>
> C:\Users\%userprofile%\AppData\Roaming\Microsoft\Windows\Network
> Shortcuts
>
>
> |
8,823,835 | I did a lot of research on this subject but couldn't find any end to end solution to implement the "build once and deploy many" using TFS 2010.
Basically what I am thinking of is having a build definition that will build a solution with multiple projects to be deployed (web application + database project + web service + reports), place the output in the drop folder and from there based on quality and version manually decide to deploy all the projects onto various environments (qa, ua, staging, production).
I know that I can modify the build process template to deploy multiple projects right after the build, something like "Build Main And Deploy to QA", "Build Main and Deploy to UA" etc, based probably on changeset# or labels but this means building every time.
What I would like is more like a dashboard that will allow the deployment team to deploy the exact build that was tested in QA, on UA environment and after getting the green light to deploy it on production. Of course that means the configurations files should be updated accordingly at the deployment time.
I am also considering defining some build definitions that won't actually build anything, instead it will deploy an existing build (based on version) to a specific environment, but it looks a bit strange to say the least. | 2012/01/11 | [
"https://Stackoverflow.com/questions/8823835",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/254083/"
] | That's near enough what we use, we have build templates to do actual builds, and deploy templates that deploy the output to various machines (these can be either set to run at scheduled times, like nightly drops to QA etc, or on demand such as UAT/live). The templates are highly modified from the default ones, we just plumb in the details from the builds (or in some cases you could take the latest builds such as a smoke test environment) such as drop locations.
You'll need an agent on the machine you're deploying to that can handle the deployment, but you can install as many agents as you like.
As an example you could have a build that builds your application into an exe, and a template that takes the exe and runs it on your target (using InvokeProcess). If you need to deploy the same thing to another environment, you just use the same drop location, viola!
What you've got doesn't sound strange at all, makes sense to handle it that way. | Daniel's answer is pretty much the standard way of getting a build system like TeamBuild to handle deployments. It feels a little weird because you are bending a tool to another purpose. It can definitely work though.
The other approach is to get a pure deployment tool that integrates with TFS / TeamBuild. The deployment across environments would be natural, but then you have two tools to manage. |
8,823,835 | I did a lot of research on this subject but couldn't find any end to end solution to implement the "build once and deploy many" using TFS 2010.
Basically what I am thinking of is having a build definition that will build a solution with multiple projects to be deployed (web application + database project + web service + reports), place the output in the drop folder and from there based on quality and version manually decide to deploy all the projects onto various environments (qa, ua, staging, production).
I know that I can modify the build process template to deploy multiple projects right after the build, something like "Build Main And Deploy to QA", "Build Main and Deploy to UA" etc, based probably on changeset# or labels but this means building every time.
What I would like is more like a dashboard that will allow the deployment team to deploy the exact build that was tested in QA, on UA environment and after getting the green light to deploy it on production. Of course that means the configurations files should be updated accordingly at the deployment time.
I am also considering defining some build definitions that won't actually build anything, instead it will deploy an existing build (based on version) to a specific environment, but it looks a bit strange to say the least. | 2012/01/11 | [
"https://Stackoverflow.com/questions/8823835",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/254083/"
] | That's near enough what we use, we have build templates to do actual builds, and deploy templates that deploy the output to various machines (these can be either set to run at scheduled times, like nightly drops to QA etc, or on demand such as UAT/live). The templates are highly modified from the default ones, we just plumb in the details from the builds (or in some cases you could take the latest builds such as a smoke test environment) such as drop locations.
You'll need an agent on the machine you're deploying to that can handle the deployment, but you can install as many agents as you like.
As an example you could have a build that builds your application into an exe, and a template that takes the exe and runs it on your target (using InvokeProcess). If you need to deploy the same thing to another environment, you just use the same drop location, viola!
What you've got doesn't sound strange at all, makes sense to handle it that way. | I know this is a late response, but things have changed since 2012. Microsoft has a [Release Management offering](http://www.visualstudio.com/en-us/explore/release-management-vs.aspx) now that is designed from the ground up to enable "build once, deploy many". Modifying build process templates is always a pain. |
8,823,835 | I did a lot of research on this subject but couldn't find any end to end solution to implement the "build once and deploy many" using TFS 2010.
Basically what I am thinking of is having a build definition that will build a solution with multiple projects to be deployed (web application + database project + web service + reports), place the output in the drop folder and from there based on quality and version manually decide to deploy all the projects onto various environments (qa, ua, staging, production).
I know that I can modify the build process template to deploy multiple projects right after the build, something like "Build Main And Deploy to QA", "Build Main and Deploy to UA" etc, based probably on changeset# or labels but this means building every time.
What I would like is more like a dashboard that will allow the deployment team to deploy the exact build that was tested in QA, on UA environment and after getting the green light to deploy it on production. Of course that means the configurations files should be updated accordingly at the deployment time.
I am also considering defining some build definitions that won't actually build anything, instead it will deploy an existing build (based on version) to a specific environment, but it looks a bit strange to say the least. | 2012/01/11 | [
"https://Stackoverflow.com/questions/8823835",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/254083/"
] | I know this is a late response, but things have changed since 2012. Microsoft has a [Release Management offering](http://www.visualstudio.com/en-us/explore/release-management-vs.aspx) now that is designed from the ground up to enable "build once, deploy many". Modifying build process templates is always a pain. | Daniel's answer is pretty much the standard way of getting a build system like TeamBuild to handle deployments. It feels a little weird because you are bending a tool to another purpose. It can definitely work though.
The other approach is to get a pure deployment tool that integrates with TFS / TeamBuild. The deployment across environments would be natural, but then you have two tools to manage. |
49,886 | In the courses, we are taught economics theoretically,inclusive of assumptions,simplicity and inferences based on the optimal thinking. But, later on we see that most of the theories and hypothesis aren't reflective of the ground reality. Most peoples are under the thread of cognitive bias, but in the courses we are taught they are Rational. As cited by Mr. Richard Thaler that, we are Humans not ECONS. Then why is it that without delving deep into the realistic part we start with the economics that is all theory.It's not that they aren't important,they are the Bible to build foundation and concept, but still,even without it can't the economics that is real be taught directly?(with foundations and concepts included?) | 2021/12/30 | [
"https://economics.stackexchange.com/questions/49886",
"https://economics.stackexchange.com",
"https://economics.stackexchange.com/users/40025/"
] | Behavioral economics is in large parts a collection of models and theories that purport to explain deviations from the predictions of neo-classical theory. For this reason, textbooks in behavioral economics include neo-classical theory, experimental evidence of deviations, and models trying to explain those. (This is why [the Dhami](https://www.amazon.de/Foundations-Behavioral-Economic-Analysis/dp/0198715536) has 1764 pages.) To understand this field one has to understand the predictions of neo-classical theory first. Therefore it makes sense to start by teaching neo-classical theory.
Another reason is that many behavioral models are explanatory but hardly predictive, i.e. they often contain several parameters that have to be estimated before the model can be applied, and then they typically make superior predictions only in a very narrow range. If you need easy predictions about many different economic interactions, then by and large, neo-classical theory still performs best. | The main reason answers to the question "what is the difference between normative and positive economics?". Under the normative approach, we have a benchmark for what "should" happen if we all satisfied some theoretical assumptions. Under this logic, anything that you observe in the real world that deviates from the theoretical norm can be traced to failure of your assumptions holding in the real world (e.g. concepts which assume equilibrium in the long run, etc). In other words the theory is good if the assumptions are good, but it doesn't apply in reality because the assumptions are not met.
Well, this is at least how we always thought until around 1953 with Milton Friedman's famous book "Essays in Positive Economics" where he roughly argued that economists should stop making unrealistic assumptions because the test of any scientific economic model should solely be based on whether it predicts well or not. He implied that wrong assumptions could make good theories as well, as long as those theories had a strong empirical backbone. So fast forward, there was this epistemological revolution (I'll let you search for Karl Popper etc) where our basis for judging "good" theories changed.
When it comes to behavioural economics, you have to understand that it started from different places. On one hand, you have some guys who advocated for relaxing rationality assumptions (Herbert Simon considered that rationality of agents was bounded) and considering cognitive biases (Daniel Kahneman and Amos Tversky) in decision theory (which ultimately implies abandoning von neumann and morgernstern's expected utility framework). On the other hand, some guys were using experiments to test standard economic theories and found a lot of hypotheses not matching with their findings.
There are a lot more things which happened, but these distinct (each on a separate island) agendas created more and more interest until becoming orthodox now.Part of why it became orthodox is because now there seems to be a good body of models that have better predictions.
So should we abandon standard economic theories? NO!! Because as I mentioned, we are only part of an epistemological revolution. This does not in any case mean that we are close to the truth (Proof is the recent "replication crisis"). Moreover, these standard economic models are not false in themselves. Empirical data still show that they can make accurate predictions.
Point is that, even if we only did behavioural economics, in the long run, our theories would converge to what has already been demonstrated using standard economic models.
Finally, to be able to teach both standard economic models and behavioural economics simultaneously would take too much time for any average student to ultimately become good in any of them; by trying to be expert in both, one becomes expert in nothing. |
12,835 | I am using a product whose code is covered by GPL2. All fine except that when a major update is released, it relies on database changes which are effected by a script (sometimes hundreds of lines long) which is not included in the GitHub repository. The authors are only willing to provide this script to those who subscribe to their extended support/partnership package. Are they entitled to apply this restriction? | 2022/05/03 | [
"https://opensource.stackexchange.com/questions/12835",
"https://opensource.stackexchange.com",
"https://opensource.stackexchange.com/users/26934/"
] | That's fine.
You receive the binary and the code under GPL. So you have the source code for the software you use and are allowed to make whatever modifications you desire. The license does not make any comment on updates whatsoever; in particular there is no reference that you are entitled for easy upgrades from one version to the next.
A script to faciliate upgrade from one version to another, working on a database, is in principle just an external tool to allow you to upgrade your data structure for digestion from one version of your software to another. It's nothing special. It could also just be a migration script from one software to another completely unrelated.
Writing such migration tool only needs knowledge of the public API for the database - so it's usually fine to consider it not a derivative of the code.
Yet, even if that were not true, one would have to look at the copyright ownership: If the company or person releasing the programme is the sole copyright holder, they are not bound by the license themselves and can choose to release any part under whatever license they choose (or not at all). If they are not - the previous paragraphs apply. | The approach you describe in your question very much looks like the ['freemium' business case](https://en.wikipedia.org/wiki/Freemium). You get something for free, but if you want to use all features (in your case: migration of data from one version to the next) you need to pay a fee.
This business model is usually OK, and if it is the case (an assumption, you seem to indicate this) that the authors of the free database and of the script are the same individuals (copyright holders), then there is not even the question about code overlaps.
So yes, the authors are OK to do this, I cannot see any GPL violation. |
126,466 | Suppose humans of the late 21st century or beyond began constructing a solar shield as a solution to climate change. Suppose for some reason (open to suggestions) they choose to build the shield in geosynchronous orbit, rather than at the L1 point. Suppose the shield is opaque, and large enough that it casts a daily eclipse on the Earth's surface. Is this plausible?
If so, how much thrust would be required for the sunshield to maintain its position? Would it be possible to supply that thrust using only solar energy and electric propulsion, via an electrodynamic tether system for example, such that the shield could remain in orbit without ongoing deliveries of chemical propellant?
By my calculations, if the shield was proportional to the moon in terms of eclipse potential, but at the distance of geosynchronous orbit, it would be approximately 340 km in diameter. Without knowing much about the potential progress of materials science in the next century, I assume, even if shield was very thin, the mass of it would make it's construction practical only to a civilization with functional space elevators. But, perhaps astroid mining could also provide the necessary materials without the launch costs. | 2018/10/01 | [
"https://worldbuilding.stackexchange.com/questions/126466",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/55685/"
] | Without going into the plausibility of the scenario, objects in orbit will tend to remain in orbit, unless acted upon by an outside force. Once you are clear of the Earth's atmosphere, you can effectively stay in orbit for geological ages (note, the atmosphere actually does go beyond the 100km mark, the ISS needs to be boosted every so often because air drag is an issue even at it's orbit).
A large, thin object such as you describe would essentially be a solar sail. It can be made out of many different materials, including metal (in layers measured in molecules), carbon fibre, nanotubes etc. IT can be extremely light for its size, and the pressure of sunlight would actually become a noticeable force on it.
During the part of the orbit where it blocks the sun, it will experience a net pressure on the side facing the sun towards the Earth, gradually pushing the sail into a lower orbit. On the opposite side of the orbit, it will be receiving solar pressure on the opposite side of the structure, effectively pushing it away from the Earth.
This will gradually move it out of position as the orbit is asymmetrically changed (the push away from the Earth will stop once the sail is in the Earth's shadow). I don't have the kills to calculate ow long it would take for the object to be pushed out of any useful orbit, but over a period of time, it's effects will become erratic and less predictable on the Earth's climate.
To at least partially counter that, the sail might be built with a series of smaller sails along the edge. These sails could be independently steered, and used to manipulate the orbit of the main sail, perhaps turning edge on to the sun on the lit side of the earth, and deploying to increase the sail area when the sail needs a push away from the Earth. This would serve to keep the sail in position much longer, although it would still require someone to come up with a rocket to make larger course correction when needed. | >
> Suppose the shield is opaque, and large enough that it casts a daily eclipse on the Earth's surface. Is this plausible?
>
>
>
Totally.
>
> If so, how much thrust would be required for the sunshield to maintain its position?
>
>
>
That depends on its mass, and how much area it exposes to solar wind.
>
> Would it be possible to supply that thrust using only solar energy and electric propulsion, such that the shield could remain in orbit without ongoing deliveries of chemical propellant?
>
>
>
As far as we know today, probably not. We could maybe push it with lasers, but it would be destroyed in the process.
[RF resonant cavity thrusters](https://en.wikipedia.org/wiki/RF_resonant_cavity_thruster) could maybe do it without propellants, but they are the stuff of sci-fi for now.
>
> Without knowing much about the potential progress of materials science in the next century, I assume, even if shield was very thin, the mass of it would make it's construction practical only to a civilization with functional space elevators. But, perhaps astroid mining could also provide the necessary materials without the launch costs.
>
>
>
Whomever considers asteroids for this is not factoring the delta-v from here to the belt and back. Earth to geosync is in the vicinity of 18 km/s. Earth to the belt and back is double that amount. Notice that you'd be bringing back more mass than you'd have upon reaching the belt, so unless you can convert asteroids into fuel on the fly, you'll have a serious constraint. |
126,466 | Suppose humans of the late 21st century or beyond began constructing a solar shield as a solution to climate change. Suppose for some reason (open to suggestions) they choose to build the shield in geosynchronous orbit, rather than at the L1 point. Suppose the shield is opaque, and large enough that it casts a daily eclipse on the Earth's surface. Is this plausible?
If so, how much thrust would be required for the sunshield to maintain its position? Would it be possible to supply that thrust using only solar energy and electric propulsion, via an electrodynamic tether system for example, such that the shield could remain in orbit without ongoing deliveries of chemical propellant?
By my calculations, if the shield was proportional to the moon in terms of eclipse potential, but at the distance of geosynchronous orbit, it would be approximately 340 km in diameter. Without knowing much about the potential progress of materials science in the next century, I assume, even if shield was very thin, the mass of it would make it's construction practical only to a civilization with functional space elevators. But, perhaps astroid mining could also provide the necessary materials without the launch costs. | 2018/10/01 | [
"https://worldbuilding.stackexchange.com/questions/126466",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/55685/"
] | 
Just put these highly reflective obsolete CD's in orbit spaced 6 inches apart, tied to fishing nets and spanned across some sort of frame. Each net could be spanned on its own frame and the distance between nets could be increased and decreased to control temperature | >
> Suppose the shield is opaque, and large enough that it casts a daily eclipse on the Earth's surface. Is this plausible?
>
>
>
Totally.
>
> If so, how much thrust would be required for the sunshield to maintain its position?
>
>
>
That depends on its mass, and how much area it exposes to solar wind.
>
> Would it be possible to supply that thrust using only solar energy and electric propulsion, such that the shield could remain in orbit without ongoing deliveries of chemical propellant?
>
>
>
As far as we know today, probably not. We could maybe push it with lasers, but it would be destroyed in the process.
[RF resonant cavity thrusters](https://en.wikipedia.org/wiki/RF_resonant_cavity_thruster) could maybe do it without propellants, but they are the stuff of sci-fi for now.
>
> Without knowing much about the potential progress of materials science in the next century, I assume, even if shield was very thin, the mass of it would make it's construction practical only to a civilization with functional space elevators. But, perhaps astroid mining could also provide the necessary materials without the launch costs.
>
>
>
Whomever considers asteroids for this is not factoring the delta-v from here to the belt and back. Earth to geosync is in the vicinity of 18 km/s. Earth to the belt and back is double that amount. Notice that you'd be bringing back more mass than you'd have upon reaching the belt, so unless you can convert asteroids into fuel on the fly, you'll have a serious constraint. |
126,466 | Suppose humans of the late 21st century or beyond began constructing a solar shield as a solution to climate change. Suppose for some reason (open to suggestions) they choose to build the shield in geosynchronous orbit, rather than at the L1 point. Suppose the shield is opaque, and large enough that it casts a daily eclipse on the Earth's surface. Is this plausible?
If so, how much thrust would be required for the sunshield to maintain its position? Would it be possible to supply that thrust using only solar energy and electric propulsion, via an electrodynamic tether system for example, such that the shield could remain in orbit without ongoing deliveries of chemical propellant?
By my calculations, if the shield was proportional to the moon in terms of eclipse potential, but at the distance of geosynchronous orbit, it would be approximately 340 km in diameter. Without knowing much about the potential progress of materials science in the next century, I assume, even if shield was very thin, the mass of it would make it's construction practical only to a civilization with functional space elevators. But, perhaps astroid mining could also provide the necessary materials without the launch costs. | 2018/10/01 | [
"https://worldbuilding.stackexchange.com/questions/126466",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/55685/"
] | Without going into the plausibility of the scenario, objects in orbit will tend to remain in orbit, unless acted upon by an outside force. Once you are clear of the Earth's atmosphere, you can effectively stay in orbit for geological ages (note, the atmosphere actually does go beyond the 100km mark, the ISS needs to be boosted every so often because air drag is an issue even at it's orbit).
A large, thin object such as you describe would essentially be a solar sail. It can be made out of many different materials, including metal (in layers measured in molecules), carbon fibre, nanotubes etc. IT can be extremely light for its size, and the pressure of sunlight would actually become a noticeable force on it.
During the part of the orbit where it blocks the sun, it will experience a net pressure on the side facing the sun towards the Earth, gradually pushing the sail into a lower orbit. On the opposite side of the orbit, it will be receiving solar pressure on the opposite side of the structure, effectively pushing it away from the Earth.
This will gradually move it out of position as the orbit is asymmetrically changed (the push away from the Earth will stop once the sail is in the Earth's shadow). I don't have the kills to calculate ow long it would take for the object to be pushed out of any useful orbit, but over a period of time, it's effects will become erratic and less predictable on the Earth's climate.
To at least partially counter that, the sail might be built with a series of smaller sails along the edge. These sails could be independently steered, and used to manipulate the orbit of the main sail, perhaps turning edge on to the sun on the lit side of the earth, and deploying to increase the sail area when the sail needs a push away from the Earth. This would serve to keep the sail in position much longer, although it would still require someone to come up with a rocket to make larger course correction when needed. | 
Just put these highly reflective obsolete CD's in orbit spaced 6 inches apart, tied to fishing nets and spanned across some sort of frame. Each net could be spanned on its own frame and the distance between nets could be increased and decreased to control temperature |
78,817 | I had installed a trial version of [Drive Genius](http://www.prosofteng.com/products/drive_genius.php). Now I want to delete it.
I go to Applications list, it is not there. I search its name in SpotLight, it is not there either. But it keeps attaching its self to the menu bar at the top.
How can I deinstall Drive Genius? | 2013/01/14 | [
"https://apple.stackexchange.com/questions/78817",
"https://apple.stackexchange.com",
"https://apple.stackexchange.com/users/36684/"
] | From the [Drive Genius 3 User Guide](https://www.prosofteng.com/support/docs/Drive-Genius-3-User-Guide.pdf):
>
> To completely remove Drive Genius 3 and its utilities from your hard disk, click on Uninstall from the Drive Genius 3 menu. A prompt will appear to confirm you want to uninstall the application and will require administrator authentication to complete the process:
>
>
> * Uninstall: Drive Genius 3 will remove only its support files from the operating system, but will leave the application and registration in its folders for future references.
> * Uninstall All: Drive Genius 3 will remove all its files, including the support files, registration files and move the application to the trash can.
>
>
>
In case you've already deleted parts of the installation, you may need to re-download/install the [Demo version](https://www.prosofteng.com/drive-genius-mac-protection-software/) first ([direct download link](https://www.prosofteng.com/download/?dg5)). | If you're only looking to disable DrivePulse, but not get rid of the Drive Genius app (it's really a great app overall) then launch Drive Genius, select Preferences from the Drive Genius menu and then click on the button "Disable DrivePulse."
Then you can simply launch Drive Genius for basic maintenance and repair whenever you need it (some of the extended features are not available without DrivePulse running - but most of the Apps within the program run just fine). |
4,295,204 | I can find several examples of how to build a service, but I'm having a difficult time finding a working example of how to send messages between an Activity and a Service. From what I can find, I think my options are to use Intents, AIDL, or to use the service object itself as per [this question](https://stackoverflow.com/questions/2463175/how-to-have-android-service-communicate-with-activity).
In my case, my activity is the only activity that will ever access the service, so a local service will do. When the activity is open, I want to see some status messages from the service, which will be coming in at up to 20 Hz. Are there any limitations on how many messages per second those communications methods will support? Basically, which method is going to be best for my situation?
Thanks. | 2010/11/28 | [
"https://Stackoverflow.com/questions/4295204",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/127287/"
] | Since your Actvity and Service are a part of the same app, then no need to use AIDL. You may simply [use your Service as a local one](http://developer.android.com/intl/zh-CN/reference/android/app/Service.html#LocalServiceSample). | The limitation is only affected by the performance of your device. There is no cap on requests per second.
Usually there is a context switch involved, that uses quite a lot of cpu (compared to other parts of the transmission), but since you use a local service you don't suffer from that. In any case, 20Hz is not a problem.
The best solution for you would be to use AIDL, and set up a callback that the service can call to report its status.
There is good example of how this is done in the APIDemos. |
14,588,540 | I working on a project that stores key/value information on a user using HBase. We are in the process of redesiging the HBase schema we are using. The two options being discussed are:
1. Use HBase column qualifiers as names for the keys. This would make rows wide, but very sparse.
2. Dump all the data into a single column and serialize it using Avro or Thrift.
What are the design tradeoffs of the two approaches? Is one preferable to the other? Are they are any reasons not to store the data using Avro or Thrift? | 2013/01/29 | [
"https://Stackoverflow.com/questions/14588540",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/614211/"
] | In summary, I lean towards using distinct columns per key.
1) Obviously, you are imposing that the client uses Avro/Thrift, which is another dependency. This dependency means you may remove the possibility of certain tooling, like BI tools which expect to find values in the data without transformation.
2) Under the avro/thrift scheme, you are pretty much forced to bring the entire value across the wire. Depending on how much data is in a row, this may not matter. But if you are only interested in 'city' fields/column-qualifier, you still have to get 'payments', 'credit-card-info', etc. This may also pose a security issue.
3) Updates, if required, will be more challenging with Avro/Thrift. Example: you decide to add a 'hasIphone6' key. Avro/Thrift: You will be forced to delete the row and create a new one with the added field. Under the column scheme, a new entry is appended, with only the new column. For a single row, not big, but if you do this to a billion rows, there will need to be a big compaction operation.
4) If configured, you can use compression in HBase, which may exceed the avro/thrift serialization, since it can compress across a column family, instead of just for the single record.
5) BigTable implementations like HBase do very well with very wide, sparse tables, so there won't be a performance hit like you might expect. | The right answer to this is a bit more complicated, so I'll give you the tl;dr first.
**Use Avro/Thrift/Protobuf**
You will need to strike a balance between how many fields to pack in a record vs. columns.
You'll typically want to put fields ("keys" in your original question) that are frequently accessed together into something like an avro record because as mentioned by cmonkey you don't want the overhead of retrieving extra data you won't use.
By making your row very wide, you'll increase seek times when fetching a subset of columns because of how HFiles are stored. Again, determining what is optimal, comes down to your access patterns.
I would also like to point out that by using something like avro, you're also providing yourself with evolvability. You don't need to delete the row and re-add it with the record containing a new field. Avro has rules for backward-compatibility and forward-compatibility. This actually makes your life much much easier because you can read both new and old records WITHOUT rewriting your data or forcing updates to older client code.
You should nearly always use compression in HBase (SNAPPY is always a good choice). |
13,551,361 | I have an ASP.NET MVC 4 web site. I'm new to Windows Azure, so I thought I would try out doing a whole publish cycle. I'd like to do a build a publish to a staging area when a check-in happens. Then, if I like the change, I'd like to push them to production.
Is this possible with Windows Azure web sites? If so, how? Currently, I have a Windows Azure Web Site. I can successfully publish the site to Windows Azure. However, I can't seem to figure out how to do staging / production configurations.
Thank you for your help. | 2012/11/25 | [
"https://Stackoverflow.com/questions/13551361",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/1720088/"
] | Brady Gaster blogged about this a few days ago, giving you 2 options:
* [Using different branches](http://www.bradygaster.com/multiple-environments-with-windows-azure-web-sites) (with a staging branch, this is good if you're using GitHub for example)
* [Using web.config transformations](http://www.bradygaster.com/managing-multiple-windows-azure-web-site-environments-using-visual-studio-publishing-profiles) (with a staging publishing profile) | In newer Resource Model, Azure provide deployment slots ( App Service | Deployment | Deployment Slots ) which could be used with publishing profile and sticky configuration settings ( App Service | Settings
| Application settings | App Settings | put your configuration here and select Slot Setting check box to make it exclusive to the environment like staging and production.
Check the official Microsoft link for [more info](https://learn.microsoft.com/en-us/azure/app-service/web-sites-staged-publishing)
**Note**: This question is very old and suggested solution is on Cloud services, the solution to this problem is provided by Azure's newer model Resource Manager and App service, which gives you Deployment slots which could be swapped any time by the admin and gives you the ability to make slot based sticky configuration (as asked in the question, i.e. a way to make the environment based settings). |
6,325,480 | I'm working on my game framework and I have, for argument sakes, a TimeService that is responsible for calculating the frame / delta time and the total time the app has been running. TimeService derives from Service which has an Update() method. What's the best way of revealing the TimeService's data like DeltaTime and TotalTime but hiding the Update() method to make sure nothing using the DeltaTime or TotalTime can accidentally call Update() and throw all the timings off? The ServiceManager calls the Update() method once a frame so that's why it's exposed.
Ideas? | 2011/06/12 | [
"https://Stackoverflow.com/questions/6325480",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/795198/"
] | I would use interfaces. Basically you have one for things that need to know the time and another for things that need to control the time. | I agree with @stonemetal on interfaces. In C# for instance, you can explicitly implement interfaces so that interface methods are only visible through an interface reference.
Another option is to reduce the visibility of the Update method (make it internal, friend, etc.) with access modifiers.
Much of this depends on your programming language; it's difficult to give a language-agnostic answer. |
6,325,480 | I'm working on my game framework and I have, for argument sakes, a TimeService that is responsible for calculating the frame / delta time and the total time the app has been running. TimeService derives from Service which has an Update() method. What's the best way of revealing the TimeService's data like DeltaTime and TotalTime but hiding the Update() method to make sure nothing using the DeltaTime or TotalTime can accidentally call Update() and throw all the timings off? The ServiceManager calls the Update() method once a frame so that's why it's exposed.
Ideas? | 2011/06/12 | [
"https://Stackoverflow.com/questions/6325480",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/795198/"
] | A clean way of doing this is to use the [facade pattern](http://en.wikipedia.org/wiki/Facade_pattern). Define a class that only declares the methods you want exposed (DeltaTime, TotalTime, etc.). Implement it to relay those calls to a (hidden) TimeService object with which it is associated. | I agree with @stonemetal on interfaces. In C# for instance, you can explicitly implement interfaces so that interface methods are only visible through an interface reference.
Another option is to reduce the visibility of the Update method (make it internal, friend, etc.) with access modifiers.
Much of this depends on your programming language; it's difficult to give a language-agnostic answer. |
96,588 | [](https://i.stack.imgur.com/qARP0.png)
The chessboard was well balanced on the mid horizontal by some fulcrum. Black and white pieces were carefully placed on such board for equilibrium. Because the wooden pieces weights vary, their perpendicular distance to fulcrum (*center of 2x2cm squares to mid horizontal line*) produce some torques or moments that are counter balanced within the system. That is $ΣM=0$ (leveled or non-tilting) where all moment is *M = weight x distance* and considered negative on one side and positive on the other side of fulcrum. The measured weights are:
King=10g.
Queen=8g.
Rook=5g.
Bishop=4g.
Knight=4g.
Pawn=2g.
The pieces are to be moved by regular chess rules (ignore checks, capturing is not allowed). White makes a move first then black moves to counter balance the position. This continues until all Black and White pieces have crossed the mid-board horizontal line.
What is the least number of moves? | 2020/04/02 | [
"https://puzzling.stackexchange.com/questions/96588",
"https://puzzling.stackexchange.com",
"https://puzzling.stackexchange.com/users/30856/"
] | TL;DR: The minimum number of moves is
>
> **9**.
>
>
>
---
Let's start by finding the allowed move pairs:
Obviously, a bishop's move can be matched by an equal and opposite bishop's move, and so on. There are also some "special couples" where black and white can move different pieces. Given the weights
>
> King=10g. Queen=8g. Rook=5g. Bishop=4g. Knight=4g. Pawn=2g.
>
>
>
we can go through every possible integer weight and see if you can make that weight by adding up pieces of one kind. (Although not more than the maximum vertical move of that piece type). This gives us the following equal weight combinations:
>
> 4: ♘ = ♝ = ♙♙
>
> 8: ♕ = ♗♗ = ♞♞
>
> 10: ♔ = ♜♜
>
> 16: ♛♛ = ♗♗♗♗
>
> 20: ♖♖♖♖ = ♝♝♝♝♝
>
> 24: ♛♛♛ = ♗♗♗♗♗♗
>
> 32: ♛♛♛♛ = ♗♗♗♗♗♗♗♗
>
> 40: ♕♕♕♕♕ = ♜♜♜♜♜♜♜♜
>
>
>
Of course, we can only move one piece at a time, so we'll just interpret the number of pieces as the vertical distance moved, and we have found all the balance-preserving move pairs.
Then, let's put some limits on the optimal solution.
* If every piece just took the minimum number of moves to reach the other side, moving on top and through other pieces, we'd need 8 white moves and 7 black moves.
* Because black needs two one-square pawn moves, white must make a useless pawn move to match it up
* Because white has to make 9 moves, black will need as many moves to balance the board.
So the optimum cannot be better than 9 moves. The above analysis also tells us that black can basically waste two moves without affecting the result.
Let's see if we can't get there. Start by clearing up some space. (Sorry about the notation, Lichess won't let me ignore checks)
>
> [](https://i.stack.imgur.com/8KlBom.png)
>
> **1. Be6 Nf3**
>
> **2. Rd8 Bh2**
>
>
>
Then, juggle the kings and the rook:
>
> [](https://i.stack.imgur.com/caqDAm.png)
>
> **3. Kc4 Rb3**
>
> **4. Kb5 Kb4**
>
>
>
Next, do the queens, and very importantly, the double pawn move (otherwise the white pawn would end up blocking the white knight).
>
> [](https://i.stack.imgur.com/dwklYm.png)
>
> **5. Qa7 Qe3**
>
> **6. d4 Bg1** (we can afford to waste a black move)
>
>
>
and finally, do the pawns and the final white knight (and the balancing black move):
>
> [](https://i.stack.imgur.com/l1frJm.png)
>
> **7. d5 c5**
>
> **8. d6 c4**
>
> **9. Nd5 Ne1** (Omit black's last move if final balancing is not necessary)
>
>
>
And there we have it: an optimal solution with an otherwise unnecessary black move as the final balancing step. | Here's my solution to the problem, which takes
>
> **nineteen plies (twenty if the position must be balanced at the end).**
> 1. Be6 Nf3
> 2. Qa6 Bg3
> 3. Ka4 Kc4
> 4. Rd8 Rb8
> 5. Nd5 Qb5
> 6. Ne7 Qb4
> 7. Ka5 Kb3
> 8. d3 c5
> 9. d4 c4
> 10. d5 (c3)
>
>
>
There probably is a shorter solution, but I haven't found it yet. |
15,888,982 | Whenever I try to connect the safari web inspector to a simulator or device running mobile safari in the foreground, the site that I try to inspect never fully loads in the inspector. The DOM never fills out in the dom tree view; i have to collapse and expand the webpage in the resource view to be able to see scripts, images, frames and the like but none of the items that should show a DOM actually do. Touch mode to select a specific dom element by tapping on it on the iphone/ipad doesn't work either as a result of this.
I've correctly set the relevant ios settings and mac safari settings so that safari on mac can see each device and connect to specific websites/webviews properly but the connection seems to fail somehow.
I've had only moderate luck in getting it to work by clearing cookies and cache via the ios settings for safari, but even then it only successfully connects and shows me a dom part of the time. Has anyone else run into this? What could be going wrong? Is there a way to fix it? Is it possible to use a different web inspector to debug sites on iOS (like the webkit nightly one) and if so, how?
This happens on both my 10.7 and 10.8 machines and on various different ipads. It might be an issue with our site specifically but I don't know how to narrow down what exactly. | 2013/04/08 | [
"https://Stackoverflow.com/questions/15888982",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/19252/"
] | I still have this issue but what has solved it for me is when I run Safari in Private Mode.
Dunno why, might be chaching-related. Not a nice solution but will do as long as the problem persist.
These are the versions:
- iOS Simulator Version 7.0 (463.9.4)
- Safari Version 6.0.5 (8536.30.1) | I've got the same problem tried with a light version of my page with less data (images, script, css)to load and it worked, so it seems to be linked to size of page :( |
15,888,982 | Whenever I try to connect the safari web inspector to a simulator or device running mobile safari in the foreground, the site that I try to inspect never fully loads in the inspector. The DOM never fills out in the dom tree view; i have to collapse and expand the webpage in the resource view to be able to see scripts, images, frames and the like but none of the items that should show a DOM actually do. Touch mode to select a specific dom element by tapping on it on the iphone/ipad doesn't work either as a result of this.
I've correctly set the relevant ios settings and mac safari settings so that safari on mac can see each device and connect to specific websites/webviews properly but the connection seems to fail somehow.
I've had only moderate luck in getting it to work by clearing cookies and cache via the ios settings for safari, but even then it only successfully connects and shows me a dom part of the time. Has anyone else run into this? What could be going wrong? Is there a way to fix it? Is it possible to use a different web inspector to debug sites on iOS (like the webkit nightly one) and if so, how?
This happens on both my 10.7 and 10.8 machines and on various different ipads. It might be an issue with our site specifically but I don't know how to narrow down what exactly. | 2013/04/08 | [
"https://Stackoverflow.com/questions/15888982",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/19252/"
] | I've got the same problem tried with a light version of my page with less data (images, script, css)to load and it worked, so it seems to be linked to size of page :( | I have run into this. The only way i get the simulator to come up in web inspector is if i have a physical device attached. Then i see them both in the list to choose from. |
15,888,982 | Whenever I try to connect the safari web inspector to a simulator or device running mobile safari in the foreground, the site that I try to inspect never fully loads in the inspector. The DOM never fills out in the dom tree view; i have to collapse and expand the webpage in the resource view to be able to see scripts, images, frames and the like but none of the items that should show a DOM actually do. Touch mode to select a specific dom element by tapping on it on the iphone/ipad doesn't work either as a result of this.
I've correctly set the relevant ios settings and mac safari settings so that safari on mac can see each device and connect to specific websites/webviews properly but the connection seems to fail somehow.
I've had only moderate luck in getting it to work by clearing cookies and cache via the ios settings for safari, but even then it only successfully connects and shows me a dom part of the time. Has anyone else run into this? What could be going wrong? Is there a way to fix it? Is it possible to use a different web inspector to debug sites on iOS (like the webkit nightly one) and if so, how?
This happens on both my 10.7 and 10.8 machines and on various different ipads. It might be an issue with our site specifically but I don't know how to narrow down what exactly. | 2013/04/08 | [
"https://Stackoverflow.com/questions/15888982",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/19252/"
] | I've got the same problem tried with a light version of my page with less data (images, script, css)to load and it worked, so it seems to be linked to size of page :( | I tried private mode, which gave me a slight improvement but Björn Christensson answer above is what worked for me.
Download WebKit Nightly Build (<http://nightly.webkit.org/>)
This allows me to view CSS and also tap to inspect nodes on the iPad. These 2 things did not work with the use private answer above. |
15,888,982 | Whenever I try to connect the safari web inspector to a simulator or device running mobile safari in the foreground, the site that I try to inspect never fully loads in the inspector. The DOM never fills out in the dom tree view; i have to collapse and expand the webpage in the resource view to be able to see scripts, images, frames and the like but none of the items that should show a DOM actually do. Touch mode to select a specific dom element by tapping on it on the iphone/ipad doesn't work either as a result of this.
I've correctly set the relevant ios settings and mac safari settings so that safari on mac can see each device and connect to specific websites/webviews properly but the connection seems to fail somehow.
I've had only moderate luck in getting it to work by clearing cookies and cache via the ios settings for safari, but even then it only successfully connects and shows me a dom part of the time. Has anyone else run into this? What could be going wrong? Is there a way to fix it? Is it possible to use a different web inspector to debug sites on iOS (like the webkit nightly one) and if so, how?
This happens on both my 10.7 and 10.8 machines and on various different ipads. It might be an issue with our site specifically but I don't know how to narrow down what exactly. | 2013/04/08 | [
"https://Stackoverflow.com/questions/15888982",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/19252/"
] | I still have this issue but what has solved it for me is when I run Safari in Private Mode.
Dunno why, might be chaching-related. Not a nice solution but will do as long as the problem persist.
These are the versions:
- iOS Simulator Version 7.0 (463.9.4)
- Safari Version 6.0.5 (8536.30.1) | I have run into this. The only way i get the simulator to come up in web inspector is if i have a physical device attached. Then i see them both in the list to choose from. |
15,888,982 | Whenever I try to connect the safari web inspector to a simulator or device running mobile safari in the foreground, the site that I try to inspect never fully loads in the inspector. The DOM never fills out in the dom tree view; i have to collapse and expand the webpage in the resource view to be able to see scripts, images, frames and the like but none of the items that should show a DOM actually do. Touch mode to select a specific dom element by tapping on it on the iphone/ipad doesn't work either as a result of this.
I've correctly set the relevant ios settings and mac safari settings so that safari on mac can see each device and connect to specific websites/webviews properly but the connection seems to fail somehow.
I've had only moderate luck in getting it to work by clearing cookies and cache via the ios settings for safari, but even then it only successfully connects and shows me a dom part of the time. Has anyone else run into this? What could be going wrong? Is there a way to fix it? Is it possible to use a different web inspector to debug sites on iOS (like the webkit nightly one) and if so, how?
This happens on both my 10.7 and 10.8 machines and on various different ipads. It might be an issue with our site specifically but I don't know how to narrow down what exactly. | 2013/04/08 | [
"https://Stackoverflow.com/questions/15888982",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/19252/"
] | I still have this issue but what has solved it for me is when I run Safari in Private Mode.
Dunno why, might be chaching-related. Not a nice solution but will do as long as the problem persist.
These are the versions:
- iOS Simulator Version 7.0 (463.9.4)
- Safari Version 6.0.5 (8536.30.1) | I tried private mode, which gave me a slight improvement but Björn Christensson answer above is what worked for me.
Download WebKit Nightly Build (<http://nightly.webkit.org/>)
This allows me to view CSS and also tap to inspect nodes on the iPad. These 2 things did not work with the use private answer above. |
15,888,982 | Whenever I try to connect the safari web inspector to a simulator or device running mobile safari in the foreground, the site that I try to inspect never fully loads in the inspector. The DOM never fills out in the dom tree view; i have to collapse and expand the webpage in the resource view to be able to see scripts, images, frames and the like but none of the items that should show a DOM actually do. Touch mode to select a specific dom element by tapping on it on the iphone/ipad doesn't work either as a result of this.
I've correctly set the relevant ios settings and mac safari settings so that safari on mac can see each device and connect to specific websites/webviews properly but the connection seems to fail somehow.
I've had only moderate luck in getting it to work by clearing cookies and cache via the ios settings for safari, but even then it only successfully connects and shows me a dom part of the time. Has anyone else run into this? What could be going wrong? Is there a way to fix it? Is it possible to use a different web inspector to debug sites on iOS (like the webkit nightly one) and if so, how?
This happens on both my 10.7 and 10.8 machines and on various different ipads. It might be an issue with our site specifically but I don't know how to narrow down what exactly. | 2013/04/08 | [
"https://Stackoverflow.com/questions/15888982",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/19252/"
] | I still have this issue but what has solved it for me is when I run Safari in Private Mode.
Dunno why, might be chaching-related. Not a nice solution but will do as long as the problem persist.
These are the versions:
- iOS Simulator Version 7.0 (463.9.4)
- Safari Version 6.0.5 (8536.30.1) | You need cookies to be enabled in your Safari |
15,888,982 | Whenever I try to connect the safari web inspector to a simulator or device running mobile safari in the foreground, the site that I try to inspect never fully loads in the inspector. The DOM never fills out in the dom tree view; i have to collapse and expand the webpage in the resource view to be able to see scripts, images, frames and the like but none of the items that should show a DOM actually do. Touch mode to select a specific dom element by tapping on it on the iphone/ipad doesn't work either as a result of this.
I've correctly set the relevant ios settings and mac safari settings so that safari on mac can see each device and connect to specific websites/webviews properly but the connection seems to fail somehow.
I've had only moderate luck in getting it to work by clearing cookies and cache via the ios settings for safari, but even then it only successfully connects and shows me a dom part of the time. Has anyone else run into this? What could be going wrong? Is there a way to fix it? Is it possible to use a different web inspector to debug sites on iOS (like the webkit nightly one) and if so, how?
This happens on both my 10.7 and 10.8 machines and on various different ipads. It might be an issue with our site specifically but I don't know how to narrow down what exactly. | 2013/04/08 | [
"https://Stackoverflow.com/questions/15888982",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/19252/"
] | You need cookies to be enabled in your Safari | I have run into this. The only way i get the simulator to come up in web inspector is if i have a physical device attached. Then i see them both in the list to choose from. |
15,888,982 | Whenever I try to connect the safari web inspector to a simulator or device running mobile safari in the foreground, the site that I try to inspect never fully loads in the inspector. The DOM never fills out in the dom tree view; i have to collapse and expand the webpage in the resource view to be able to see scripts, images, frames and the like but none of the items that should show a DOM actually do. Touch mode to select a specific dom element by tapping on it on the iphone/ipad doesn't work either as a result of this.
I've correctly set the relevant ios settings and mac safari settings so that safari on mac can see each device and connect to specific websites/webviews properly but the connection seems to fail somehow.
I've had only moderate luck in getting it to work by clearing cookies and cache via the ios settings for safari, but even then it only successfully connects and shows me a dom part of the time. Has anyone else run into this? What could be going wrong? Is there a way to fix it? Is it possible to use a different web inspector to debug sites on iOS (like the webkit nightly one) and if so, how?
This happens on both my 10.7 and 10.8 machines and on various different ipads. It might be an issue with our site specifically but I don't know how to narrow down what exactly. | 2013/04/08 | [
"https://Stackoverflow.com/questions/15888982",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/19252/"
] | You need cookies to be enabled in your Safari | I tried private mode, which gave me a slight improvement but Björn Christensson answer above is what worked for me.
Download WebKit Nightly Build (<http://nightly.webkit.org/>)
This allows me to view CSS and also tap to inspect nodes on the iPad. These 2 things did not work with the use private answer above. |
966,597 | There is an Old-SQL server, Running as a VM guest, that needs to be replace. The Old-SQL server will be replaced with a New-SQL server, running as a VM Guest.
Currently the Old-SQL server needs to be reviewed to see what service its providing at to which applications-- and to see what is actively being used on the server.
Are there instructions for checking which databases are being used by which applications?
Are there instructions for verifying which databases are no longer being used?
Thank you for any additional information or guidance. | 2019/05/09 | [
"https://serverfault.com/questions/966597",
"https://serverfault.com",
"https://serverfault.com/users/385679/"
] | In addition, here is another query you could use:
SELECT @@ServerName AS serverName,
NAME AS DatabaseName
,COUNT(STATUS) AS NumberofConnection
,GETDATE() AS Time
FROM sys.databases sd
LEFT JOIN sysprocesses sp ON sd.database\_id = sp.dbid
GROUP BY NAME | Have you tried sp\_who to see what processes are running on SQL server?
<https://docs.microsoft.com/en-us/sql/relational-databases/system-stored-procedures/sp-who-transact-sql?view=sql-server-2017> |
103,956 | We are in the midst of round of improvements to the bounty system.
We will be adding the facility for [bounty remarks](https://meta.stackexchange.com/questions/102423/can-we-have-a-bounty-remark).
We all agree that having this extra information is useful. The information will no longer be trapped in comments or as an edit to the question and it will help guide the "bounty hunters".
**However**, we also want to force people to choose a top level category and have the remark optional.
---
What top level bounty categories do you think make sense? | 2011/08/26 | [
"https://meta.stackexchange.com/questions/103956",
"https://meta.stackexchange.com",
"https://meta.stackexchange.com/users/17174/"
] | I want to reward a great answer
------------------------------- | Have Rep, Must Burn!
--------------------
(probably mostly for Meta SO) |
103,956 | We are in the midst of round of improvements to the bounty system.
We will be adding the facility for [bounty remarks](https://meta.stackexchange.com/questions/102423/can-we-have-a-bounty-remark).
We all agree that having this extra information is useful. The information will no longer be trapped in comments or as an edit to the question and it will help guide the "bounty hunters".
**However**, we also want to force people to choose a top level category and have the remark optional.
---
What top level bounty categories do you think make sense? | 2011/08/26 | [
"https://meta.stackexchange.com/questions/103956",
"https://meta.stackexchange.com",
"https://meta.stackexchange.com/users/17174/"
] | Current answers are outdated
---------------------------- | Need to get a more specific answer.
-----------------------------------
Because the answers given are just too broad to be useful. |
103,956 | We are in the midst of round of improvements to the bounty system.
We will be adding the facility for [bounty remarks](https://meta.stackexchange.com/questions/102423/can-we-have-a-bounty-remark).
We all agree that having this extra information is useful. The information will no longer be trapped in comments or as an edit to the question and it will help guide the "bounty hunters".
**However**, we also want to force people to choose a top level category and have the remark optional.
---
What top level bounty categories do you think make sense? | 2011/08/26 | [
"https://meta.stackexchange.com/questions/103956",
"https://meta.stackexchange.com",
"https://meta.stackexchange.com/users/17174/"
] | I also need the answer to this question.
----------------------------------------
(For bounties on other's questions that don't have the answer you need) | It is self-explanatory.
------------------------
Or "Want to draw attention and the reason why is self-explanatory". Or "The user declines comments".
This can be followed by a link to the faq, such as [this](https://stackoverflow.com/faq#bounty). The reasons I give are:
1. the faq already states that the bounty is for better answers or other good answers.
2. one does want to avoid being judgemental on the already given answers. (example: the given answers are all wrong).
3. a "better answer" is something hard to quantify-it might be the clarity,content, format, English, poor sources, etc. The reasons for bounty can be multiple.
Note that this is stronger than the already proposed "Want to draw attention", which could be followed by "why?" inquires from other users. |
103,956 | We are in the midst of round of improvements to the bounty system.
We will be adding the facility for [bounty remarks](https://meta.stackexchange.com/questions/102423/can-we-have-a-bounty-remark).
We all agree that having this extra information is useful. The information will no longer be trapped in comments or as an edit to the question and it will help guide the "bounty hunters".
**However**, we also want to force people to choose a top level category and have the remark optional.
---
What top level bounty categories do you think make sense? | 2011/08/26 | [
"https://meta.stackexchange.com/questions/103956",
"https://meta.stackexchange.com",
"https://meta.stackexchange.com/users/17174/"
] | I also need the answer to this question.
----------------------------------------
(For bounties on other's questions that don't have the answer you need) | Need to get a more specific answer.
-----------------------------------
Because the answers given are just too broad to be useful. |
103,956 | We are in the midst of round of improvements to the bounty system.
We will be adding the facility for [bounty remarks](https://meta.stackexchange.com/questions/102423/can-we-have-a-bounty-remark).
We all agree that having this extra information is useful. The information will no longer be trapped in comments or as an edit to the question and it will help guide the "bounty hunters".
**However**, we also want to force people to choose a top level category and have the remark optional.
---
What top level bounty categories do you think make sense? | 2011/08/26 | [
"https://meta.stackexchange.com/questions/103956",
"https://meta.stackexchange.com",
"https://meta.stackexchange.com/users/17174/"
] | Need to use alternate technology or api/product version.
--------------------------------------------------------
Perhaps the person has a technology restriction or version restriction that they need to work around. | It is self-explanatory.
------------------------
Or "Want to draw attention and the reason why is self-explanatory". Or "The user declines comments".
This can be followed by a link to the faq, such as [this](https://stackoverflow.com/faq#bounty). The reasons I give are:
1. the faq already states that the bounty is for better answers or other good answers.
2. one does want to avoid being judgemental on the already given answers. (example: the given answers are all wrong).
3. a "better answer" is something hard to quantify-it might be the clarity,content, format, English, poor sources, etc. The reasons for bounty can be multiple.
Note that this is stronger than the already proposed "Want to draw attention", which could be followed by "why?" inquires from other users. |
103,956 | We are in the midst of round of improvements to the bounty system.
We will be adding the facility for [bounty remarks](https://meta.stackexchange.com/questions/102423/can-we-have-a-bounty-remark).
We all agree that having this extra information is useful. The information will no longer be trapped in comments or as an edit to the question and it will help guide the "bounty hunters".
**However**, we also want to force people to choose a top level category and have the remark optional.
---
What top level bounty categories do you think make sense? | 2011/08/26 | [
"https://meta.stackexchange.com/questions/103956",
"https://meta.stackexchange.com",
"https://meta.stackexchange.com/users/17174/"
] | authoritative references/documentation on the subject
-----------------------------------------------------
If you are looking for a more "sourced" or "authoritative" answer. You may not be unhappy with the current answer, but you are looking for more official documentation or credible references to backup the answer. | Need to get a more specific answer.
-----------------------------------
Because the answers given are just too broad to be useful. |
103,956 | We are in the midst of round of improvements to the bounty system.
We will be adding the facility for [bounty remarks](https://meta.stackexchange.com/questions/102423/can-we-have-a-bounty-remark).
We all agree that having this extra information is useful. The information will no longer be trapped in comments or as an edit to the question and it will help guide the "bounty hunters".
**However**, we also want to force people to choose a top level category and have the remark optional.
---
What top level bounty categories do you think make sense? | 2011/08/26 | [
"https://meta.stackexchange.com/questions/103956",
"https://meta.stackexchange.com",
"https://meta.stackexchange.com/users/17174/"
] | - Want to draw attention to this great question
-----------------------------------------------
- Want to draw attention to the great answer of X
------------------------------------------------- | Need to get a more specific answer.
-----------------------------------
Because the answers given are just too broad to be useful. |
103,956 | We are in the midst of round of improvements to the bounty system.
We will be adding the facility for [bounty remarks](https://meta.stackexchange.com/questions/102423/can-we-have-a-bounty-remark).
We all agree that having this extra information is useful. The information will no longer be trapped in comments or as an edit to the question and it will help guide the "bounty hunters".
**However**, we also want to force people to choose a top level category and have the remark optional.
---
What top level bounty categories do you think make sense? | 2011/08/26 | [
"https://meta.stackexchange.com/questions/103956",
"https://meta.stackexchange.com",
"https://meta.stackexchange.com/users/17174/"
] | Need to use alternate technology or api/product version.
--------------------------------------------------------
Perhaps the person has a technology restriction or version restriction that they need to work around. | Have Rep, Must Burn!
--------------------
(probably mostly for Meta SO) |
6,667,537 | I'm working on an app for a client and the client wants absolutely everything to be shareable (using sharekit). One of the views that the client wants is a photo gallery that can be easily updated and viewed. I've looked around at folks who have done this and I particularly like the way the Obama 2012 app does it using flickr. This brings me to the question, I'm trying to use the flickr api to display a photo gallery that will allow sharekit to share the url to the image but am hitting a brick wall. I've searched for a few days now and haven't found a tutorial that shows a working example in the way I need it, if anyone has done something similar or knows a good tutorial that would be greatly appreciated. | 2011/07/12 | [
"https://Stackoverflow.com/questions/6667537",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/841117/"
] | Download the list of images using the Flickr API, and asynchronously add them to a UIScrollView inside a UINavigationController with its back button as "back". Then add a UIToolBar which has the items 'Next' and 'Previous' (use images). That will give you the look of a photo gallery.
Also, I came across this which is basically what I told you to do, but open source: <http://www.cocoacontrols.com/platforms/ios/controls/fgallery> | I wrote a tutorial on building a media gallery using a UICollectionView. It populates from the user's photo library, but is definitely more extensible than using a 3rd party.
[iPhone Programming Tutorial: Creating An Image Gallery Like Over – Part 1](http://brandontreb.com/iphone-programming-tutorial-creating-an-image-gallery-like-over-part-1)
Hope that helps. Cheers! |
42,401,957 | I have a Person Satellite with a Gender attribute. From source systems the values for this attribute can be: F, M, FEMALE, or MALE. Which of the two following approaches is the correct one for Data Vault modeling?
1. Store data in Gender as it comes from sources and in the Business Vault or Data Marts standardize the values to FEMALE and MALE only
2. Create a cross-reference table to map out F to FEMALE and M to MALE, while loading the Person Satellite, transform F to FEMALE and M to MALE using the cross-reference table.
I'm using Amazon Redshift that supports column compression. | 2017/02/22 | [
"https://Stackoverflow.com/questions/42401957",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/963154/"
] | I emailed Daniel Linstedt, creator of the Data Vault modeling method, to ask him the same question. His answer:
"I typically store it as it comes in, THEN translate it on the way to the Business DV. This way, if the business ever changes it's mind, we can re-write the translation rule without affecting history. But more than that, I've seen source systems that deliver values outside the boundaries of what's acceptable. Do not try to translate on the way in to the Raw DV, to do so would destroy auditability." | Data vault concept is useful when you have a very complex business logic that changes over time but F/Female and M/Male mapping is a pretty simple and stable logic. Having a cross-reference will be just overcomplicating things here. I would just standardize the values to F/M and use char(1) column without compression here. |
44,145 | Dearly Beloved,
this has been a very sad week for all of us. Our good friend [~quack](https://meta.stackexchange.com/users/137184/quack-quixote) has lost what
clearly was a largely important part of his Trilogy life. After a [month-long
struggle](https://meta.stackexchange.com/questions/25542/display-names-bugs-no-allowed-cant-reset-unset-kills-profile-copy), he has given in to the inevitable and sent his Tilde to finally rest
in peace.
Having our friend experience this tragedy would be sad enough, but the loss is
even greater: With an ASCII code of 126, the Tilde was the last of the [printable
characters](http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters). The implications of it being no more cannot even be imagined yet.
Thus I ask you all to give a dignified salute to it that "[is colloquially known
as a 'squiggle' by people who do not know its name](http://en.wikipedia.org/wiki/Tilde)".
The manner in which you
pay the tribute is of your choice: Be it that you create a Haiku telling its story,
compose a song giving praise to the many wonderful deeds of the Tilde, use your
art skills to design a poster that commemorates the swung dash in all its glory,
write a Greasemonkey script to let the Tilde appear amongst us one more time
– or whatever way you find to let the world know
~, you will be missed.
====================== | 2010/03/26 | [
"https://meta.stackexchange.com/questions/44145",
"https://meta.stackexchange.com",
"https://meta.stackexchange.com/users/115866/"
] | ..
~ | There once was a tilde from quacktown,
Who danced before names like a king's crown.
Jeff said "*Forget* it!"
A forced user edit;
And far from the DB it was blown.
And far from SOFU went that clown! |
44,145 | Dearly Beloved,
this has been a very sad week for all of us. Our good friend [~quack](https://meta.stackexchange.com/users/137184/quack-quixote) has lost what
clearly was a largely important part of his Trilogy life. After a [month-long
struggle](https://meta.stackexchange.com/questions/25542/display-names-bugs-no-allowed-cant-reset-unset-kills-profile-copy), he has given in to the inevitable and sent his Tilde to finally rest
in peace.
Having our friend experience this tragedy would be sad enough, but the loss is
even greater: With an ASCII code of 126, the Tilde was the last of the [printable
characters](http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters). The implications of it being no more cannot even be imagined yet.
Thus I ask you all to give a dignified salute to it that "[is colloquially known
as a 'squiggle' by people who do not know its name](http://en.wikipedia.org/wiki/Tilde)".
The manner in which you
pay the tribute is of your choice: Be it that you create a Haiku telling its story,
compose a song giving praise to the many wonderful deeds of the Tilde, use your
art skills to design a poster that commemorates the swung dash in all its glory,
write a Greasemonkey script to let the Tilde appear amongst us one more time
– or whatever way you find to let the world know
~, you will be missed.
====================== | 2010/03/26 | [
"https://meta.stackexchange.com/questions/44145",
"https://meta.stackexchange.com",
"https://meta.stackexchange.com/users/115866/"
] | I have visions of tildes flying around, looking for a new user to possess...
[~ http://djtrousdale.com/arts/wp-content/original/2009\_08/epuc-tilde.jpg](http://djtrousdale.com/arts/wp-content/original/2009_08/epuc-tilde.jpg) | I often use the tilde to express "approximately" or "about", as a replacement for `=` when I provide WAGs.
As such, I can only offer my congratulations to quack for having fully realized his true nature, rather than only approximating the quackitude he so fittingly displays.
Your old self will be missed, but we look forward you full antics.
~quack
All hail the real quack!
------------------------ |
44,145 | Dearly Beloved,
this has been a very sad week for all of us. Our good friend [~quack](https://meta.stackexchange.com/users/137184/quack-quixote) has lost what
clearly was a largely important part of his Trilogy life. After a [month-long
struggle](https://meta.stackexchange.com/questions/25542/display-names-bugs-no-allowed-cant-reset-unset-kills-profile-copy), he has given in to the inevitable and sent his Tilde to finally rest
in peace.
Having our friend experience this tragedy would be sad enough, but the loss is
even greater: With an ASCII code of 126, the Tilde was the last of the [printable
characters](http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters). The implications of it being no more cannot even be imagined yet.
Thus I ask you all to give a dignified salute to it that "[is colloquially known
as a 'squiggle' by people who do not know its name](http://en.wikipedia.org/wiki/Tilde)".
The manner in which you
pay the tribute is of your choice: Be it that you create a Haiku telling its story,
compose a song giving praise to the many wonderful deeds of the Tilde, use your
art skills to design a poster that commemorates the swung dash in all its glory,
write a Greasemonkey script to let the Tilde appear amongst us one more time
– or whatever way you find to let the world know
~, you will be missed.
====================== | 2010/03/26 | [
"https://meta.stackexchange.com/questions/44145",
"https://meta.stackexchange.com",
"https://meta.stackexchange.com/users/115866/"
] | *~fin*
====== | My tribute:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
44,145 | Dearly Beloved,
this has been a very sad week for all of us. Our good friend [~quack](https://meta.stackexchange.com/users/137184/quack-quixote) has lost what
clearly was a largely important part of his Trilogy life. After a [month-long
struggle](https://meta.stackexchange.com/questions/25542/display-names-bugs-no-allowed-cant-reset-unset-kills-profile-copy), he has given in to the inevitable and sent his Tilde to finally rest
in peace.
Having our friend experience this tragedy would be sad enough, but the loss is
even greater: With an ASCII code of 126, the Tilde was the last of the [printable
characters](http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters). The implications of it being no more cannot even be imagined yet.
Thus I ask you all to give a dignified salute to it that "[is colloquially known
as a 'squiggle' by people who do not know its name](http://en.wikipedia.org/wiki/Tilde)".
The manner in which you
pay the tribute is of your choice: Be it that you create a Haiku telling its story,
compose a song giving praise to the many wonderful deeds of the Tilde, use your
art skills to design a poster that commemorates the swung dash in all its glory,
write a Greasemonkey script to let the Tilde appear amongst us one more time
– or whatever way you find to let the world know
~, you will be missed.
====================== | 2010/03/26 | [
"https://meta.stackexchange.com/questions/44145",
"https://meta.stackexchange.com",
"https://meta.stackexchange.com/users/115866/"
] | There once was a tilde from quacktown,
Who danced before names like a king's crown.
Jeff said "*Forget* it!"
A forced user edit;
And far from the DB it was blown.
And far from SOFU went that clown! | I'm trying to find the words to the "alt sigma tilde" song (to the tune of Waltzing Matilda) but without success. It would be very appropriate if anyone has a link? |
44,145 | Dearly Beloved,
this has been a very sad week for all of us. Our good friend [~quack](https://meta.stackexchange.com/users/137184/quack-quixote) has lost what
clearly was a largely important part of his Trilogy life. After a [month-long
struggle](https://meta.stackexchange.com/questions/25542/display-names-bugs-no-allowed-cant-reset-unset-kills-profile-copy), he has given in to the inevitable and sent his Tilde to finally rest
in peace.
Having our friend experience this tragedy would be sad enough, but the loss is
even greater: With an ASCII code of 126, the Tilde was the last of the [printable
characters](http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters). The implications of it being no more cannot even be imagined yet.
Thus I ask you all to give a dignified salute to it that "[is colloquially known
as a 'squiggle' by people who do not know its name](http://en.wikipedia.org/wiki/Tilde)".
The manner in which you
pay the tribute is of your choice: Be it that you create a Haiku telling its story,
compose a song giving praise to the many wonderful deeds of the Tilde, use your
art skills to design a poster that commemorates the swung dash in all its glory,
write a Greasemonkey script to let the Tilde appear amongst us one more time
– or whatever way you find to let the world know
~, you will be missed.
====================== | 2010/03/26 | [
"https://meta.stackexchange.com/questions/44145",
"https://meta.stackexchange.com",
"https://meta.stackexchange.com/users/115866/"
] | You shall be missed.
~
=
~
--
~
### ~
~
~
~
~ | *~fin*
====== |
44,145 | Dearly Beloved,
this has been a very sad week for all of us. Our good friend [~quack](https://meta.stackexchange.com/users/137184/quack-quixote) has lost what
clearly was a largely important part of his Trilogy life. After a [month-long
struggle](https://meta.stackexchange.com/questions/25542/display-names-bugs-no-allowed-cant-reset-unset-kills-profile-copy), he has given in to the inevitable and sent his Tilde to finally rest
in peace.
Having our friend experience this tragedy would be sad enough, but the loss is
even greater: With an ASCII code of 126, the Tilde was the last of the [printable
characters](http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters). The implications of it being no more cannot even be imagined yet.
Thus I ask you all to give a dignified salute to it that "[is colloquially known
as a 'squiggle' by people who do not know its name](http://en.wikipedia.org/wiki/Tilde)".
The manner in which you
pay the tribute is of your choice: Be it that you create a Haiku telling its story,
compose a song giving praise to the many wonderful deeds of the Tilde, use your
art skills to design a poster that commemorates the swung dash in all its glory,
write a Greasemonkey script to let the Tilde appear amongst us one more time
– or whatever way you find to let the world know
~, you will be missed.
====================== | 2010/03/26 | [
"https://meta.stackexchange.com/questions/44145",
"https://meta.stackexchange.com",
"https://meta.stackexchange.com/users/115866/"
] | You shall be missed.
~
=
~
--
~
### ~
~
~
~
~ | I would offer up the new name of **squiggle quack**. |
44,145 | Dearly Beloved,
this has been a very sad week for all of us. Our good friend [~quack](https://meta.stackexchange.com/users/137184/quack-quixote) has lost what
clearly was a largely important part of his Trilogy life. After a [month-long
struggle](https://meta.stackexchange.com/questions/25542/display-names-bugs-no-allowed-cant-reset-unset-kills-profile-copy), he has given in to the inevitable and sent his Tilde to finally rest
in peace.
Having our friend experience this tragedy would be sad enough, but the loss is
even greater: With an ASCII code of 126, the Tilde was the last of the [printable
characters](http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters). The implications of it being no more cannot even be imagined yet.
Thus I ask you all to give a dignified salute to it that "[is colloquially known
as a 'squiggle' by people who do not know its name](http://en.wikipedia.org/wiki/Tilde)".
The manner in which you
pay the tribute is of your choice: Be it that you create a Haiku telling its story,
compose a song giving praise to the many wonderful deeds of the Tilde, use your
art skills to design a poster that commemorates the swung dash in all its glory,
write a Greasemonkey script to let the Tilde appear amongst us one more time
– or whatever way you find to let the world know
~, you will be missed.
====================== | 2010/03/26 | [
"https://meta.stackexchange.com/questions/44145",
"https://meta.stackexchange.com",
"https://meta.stackexchange.com/users/115866/"
] |  | Goodbye %7e, you were ***unique***
[alt text http://www.juanformoso.com.ar/images/unique.jpg](http://www.juanformoso.com.ar/images/unique.jpg) |
27 | I try to not take large meals for at least 12 hours before starting, yet abdominal exercises still can make me feel unwell and go to bathroom.
Is it normal? Or should I reconsider my diet? Does anyone else have this problem? | 2011/03/01 | [
"https://fitness.stackexchange.com/questions/27",
"https://fitness.stackexchange.com",
"https://fitness.stackexchange.com/users/16/"
] | You should not need to empty your bowels prior to exercise. If you are experiencing discomfort during abdominal exercise, you should make sure your diet:
* contains enough fiber to allow you to go regularly
+ [The Mayo Clinic has a nice list of high-fiber foods](http://www.mayoclinic.com/health/high-fiber-foods/NU00582)
* you are not taking excessive [diuretics](http://en.wikipedia.org/wiki/Diuretics)
* you are not taking in foods that cause excess gas or bloating
+ [About.com has a list of foods known to cause excess gas and bloating](http://ibs.about.com/od/ibsfood/a/GassyFoods.htm)
If you are following all of those rules and still experiencing this problem regularly, then you should consider talking to your doctor about it. | My strategy for really intense workouts (ie long distance running) -- drink lots of water and eat some carbs (ie granola bars) before starting. Relax for a half hour or so while you hydrate and much lightly. I find this helps my bowels to move so I won't have to go while running. This consistently works for me, if this doesn't make me have to go, nothing will. |
13,009,550 | I'm trying to figure out how easy it is to do time-series prediction using a Neural Net. Encog seems to be the framework of choice but I Googled around and didn't see a Java time-series example anywhere using the latest version (or any 3.x).
Does anyone have a good example I can see?
Bonus points if it is an example that shows predicting more than one inter-related value. i.e. I need to predict W,X,Y,Z based on the previous values of W,X,Y,Z. | 2012/10/22 | [
"https://Stackoverflow.com/questions/13009550",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/1126/"
] | Have you seen <https://github.com/encog/encog-java-core/downloads>? The example are using version 3.1 I believe. | From the Encog wiki, Encog Workbench Time-Series Example
<http://www.heatonresearch.com/wiki/Workbench_Time-Series_Example>
Predictive Neural Networks, with three videos.
<http://www.heatonresearch.com/wiki/NN_Session_10:_Predictive_Neural_Networks> |
24,157 | My younger brother is looking to start programming. He's 14, and technically-inclined, but no real experience programming. He's looking to me for guidance, and I don't feel as if my experience is enough, so I figured I'd ask here.
He's more interested in web programming, but also has an interest in desktop/mobile/server applications.
What would be a good learning path for him to take? I'm going to buy him a bunch of books for Christmas to get him started; the question is, what should he learn, and in which order?
The way I see it, he needs to learn theory and code. I'd like to start him off with Python or Ruby or PHP. If he wants to get in to web, he's also going to need to learn HTML, CSS, Javascript, etc.
Out of those three domains (Languages, Theory, Markup/Etc.), what is the best order do you think to learn in? Also, am I missing anything?
Thanks! | 2010/12/06 | [
"https://softwareengineering.stackexchange.com/questions/24157",
"https://softwareengineering.stackexchange.com",
"https://softwareengineering.stackexchange.com/users/9227/"
] | Does his high school offer classes in computer science? For example in the United States the Advanced Placement program has a computer science class that goes through quite a bit of the basic computer science concepts (flow of control, basic object oriented development practices, loops, etc.).
I was able to attend a high school that offered computer science courses for basically all 4 years (from an introductory course through to basic LIPS, MIPS, and Open GL). I ended up testing out of the basics in college and then re-learning a lot of the other languages and topics in upper level courses. I can tell you that 14-17 year old brain had a lot more difficulty wrapping around the theory than an 18-22 year old brain did. Topics like recursion, pointer arithmetic, low-level programming, network topography, and functional programming took me a long time to get in high school, but the second time around in college I found them to be a breeze, perhaps because I'd already tackled them but also perhaps because of what developmental scientists have proved about the young brain - some of the abstract thinking required for higher math and CS concepts is still developing.
Even though it was difficult, thinking through CS starting at 14 is extremely helpful. Doing it without teachers seems like it would have been complicated. I would've spent time developing web pages for fun because it's what I loved to do back then (and now), but I would never have taught myself pointers, recursion, and LISP for fun at the time. | - c
- c++
- python upto basic programming
- then HTML
- css
- javascript
- do hard with css its very important and javascript upto minimum validation level
- then srart python for html and getting url
- then framework if all stage are ok
levels are are follow
- basic level with command prompt to understand basic anatomy
- application level
- mouse graphic level
- web level
- designning level
- database level
dont forget to modularise things when you teach , undesrtand he will not understand javascript untill he know c/c++ or python etc
- once he know basic programming he can do HTML easily
- once he know html he llike css to
- but stop and try more with css so new ideas will generate and he feel he need help to get started with project then he will try to learn javascript and python with database for completion of project .
---
Added on 04/07/2013
-------------------
at the age of 14 when you want to try u r hands on programming first you need to understand what resource i needed to get completed the task or project or basic guidelines ,
well as i mensioned in my post learn basic programming first ,
it will help you to understand how the programs or software works with looping and condition , when next you think i understand all things but i dont klnow how to access mouse or do something when i click somewhere , you will try some libraries like graphics and mouse , so you understand how this works , next question will come to ur mind how to place my buttons and add events so they can interact with my code , so you will like to learn event programming then when you complete this stage , next question will arise i make very big code and i dont know how to call function its bit complicated , then you will try modularization , object and classes for application ,
after that you will think i know how to build basic application but i want to make application for database, then Database comes to mind , you like to learn but problem is that you feel its hard to get connected with code so you will work on database command prompt ,
its a programmic approach believe , i do and learn from same way and my basics arevery clear so i can understand how routines or program is work,
once you understand and much confident about you can make application for desktop try same skills for HTML
when you try for html , you will feel its much more easy than what you learn prevoiusly , just because you spent lot of time on basics .
in html , understand structure and how code works , once you know this things , you loike to give validation and database connectivity for application ,
give try and you get succed in a day , you can easily builkd form place buttons and validate with the halp of javascript,
then you will ask a question to yourself i made everything but what about look it dosnt match with what i see on internet , so try hard with css,
i am very sure if you dedicately try for css with best IDE or dreamweaver you will be in love wit hTML/css .
its enough for you to make a simple application or web with HTML,
at certain point you will ask another question to yourself how to make it dynamic when you know hyperlinks work well , then what does dynamic , lets think about database , that you learn prevoiusly ,
yes thats my point , show records , insert record , delete record and play with database locally with javascript and server side programming,
then other concept will come to your mind automatically , to create user , validation , session , user history, internationalization etc
and you will go ahead without guidance because your base is clear and you know what to do and what resource you needed to complete the task
---
thats all the stages .
basics are very important and right steps also .
once you know basics you can easily learn another language or migrate from one language to another language
thanks for reading
Added on 04/07/2013
-------------------
progarme is nothing but a set of instruction and routines ,
eg our daily routine ,
we wake up , take bath , lunch , work , dinner, go to sleep .
but if we mis any one of the task we feel unconfortable thats is if day is sunday when you have no work or on vacation the condition is change and daily routines also , so you get match with other things , thats what like programming approach , learn from practical not from what books tell you , books are good for reference but understand natural way how we react , work with the help of if-else statement , eg: suppose we have two work and both are very important , but we can do only one at a time , you pick 1st one and complete then you can go to home , if you pick second then you need to work next 5 hours , else if you complete both work , you get 1 day leave ,thats about programming approach |
24,157 | My younger brother is looking to start programming. He's 14, and technically-inclined, but no real experience programming. He's looking to me for guidance, and I don't feel as if my experience is enough, so I figured I'd ask here.
He's more interested in web programming, but also has an interest in desktop/mobile/server applications.
What would be a good learning path for him to take? I'm going to buy him a bunch of books for Christmas to get him started; the question is, what should he learn, and in which order?
The way I see it, he needs to learn theory and code. I'd like to start him off with Python or Ruby or PHP. If he wants to get in to web, he's also going to need to learn HTML, CSS, Javascript, etc.
Out of those three domains (Languages, Theory, Markup/Etc.), what is the best order do you think to learn in? Also, am I missing anything?
Thanks! | 2010/12/06 | [
"https://softwareengineering.stackexchange.com/questions/24157",
"https://softwareengineering.stackexchange.com",
"https://softwareengineering.stackexchange.com/users/9227/"
] | Register him an account for [StackOverflow.com](http://www.stackoverflow.com) and [Programmers.StackExchange.com](http://programmers.stackexchange.com)
-------------------------------------------------------------------------------------------------------------------------------------------------------
and get him into the habit of **browsing** different **questions when** he is **bored**. Start with the hot/most popular questions.
*Also*
Help him come up with **a goal** of something he wants **to create** that is slightly beyond his reach, a simple game, an app that can send a tweet? It has to be something **that is exciting**. This will help guide the topics he exposes himself to and **provide him motivation** through the tangible output he creates.
*And*
Where possible **don't buy books in physical form** *if he works well with digital print*, I am sure one of you has an android or iphone or blackberry or ipod touch? Get the ibooks or kindle app and **buy digital versions**.
Having to deal with a physical book slows the process of knowledge acquisition; the tools built into **digital readers provide many benefits** to technical reading.
*Note: as mentioned in the comments, there are drawbacks to digital vs printed books, so take this point with a grain of salt* | I personally wouldn't start with the hardcore theory. I'd start with practical programming intermingled with some elements of the theory. It could keep one much more motivated and not scare him off.
It is for instance a case with musical schools. A huge portion of students quit because they get bored with the theory and eventually lose interest.
Besides, the theory is not that good when it is learned before having gotten your hands dirty with practice. You won't know when and how to apply it.
But if you had some theory knowledge then practiced a lot, after that a serious course in IT would push you on a different level. Otherwise the years spent in a university are just wasted on a deaf year.
In that order:
1. Some basic theory about hardware, computer architecture and programing that hardware. Just basic.
2. Then develop practical things. Basic applications to keep interest. First local, then something with graphics. Web pages not yet since you would want to demonstrate the server-side programming and it is often useless without databases.
3. Drop him some database knowledge crops
4. Interface you local application with the database. Then try web development.
5. Adjust the course as you go. |
24,157 | My younger brother is looking to start programming. He's 14, and technically-inclined, but no real experience programming. He's looking to me for guidance, and I don't feel as if my experience is enough, so I figured I'd ask here.
He's more interested in web programming, but also has an interest in desktop/mobile/server applications.
What would be a good learning path for him to take? I'm going to buy him a bunch of books for Christmas to get him started; the question is, what should he learn, and in which order?
The way I see it, he needs to learn theory and code. I'd like to start him off with Python or Ruby or PHP. If he wants to get in to web, he's also going to need to learn HTML, CSS, Javascript, etc.
Out of those three domains (Languages, Theory, Markup/Etc.), what is the best order do you think to learn in? Also, am I missing anything?
Thanks! | 2010/12/06 | [
"https://softwareengineering.stackexchange.com/questions/24157",
"https://softwareengineering.stackexchange.com",
"https://softwareengineering.stackexchange.com/users/9227/"
] | I would go to school, if college age.
I would take it high school, if high school age.
I'd have a mission and adjust the curriculum accordingly at 14.
many people will down me for this but Visual Basic .NET seems to be easier for some, just saying folks. It appears to be that way for many not in the initiate. | >
> I'd like to start him off with Python or Ruby or PHP. If he wants to get in to web, he's also going to need to learn HTML, CSS, Javascript, etc.
>
>
>
This seems reasonable. Impart some basic skills and help him flesh out an idea for a challenging, project that he will remain interested in.
His first experiences don't need to be perfect, in fact it will help if he makes a ton of mistakes early. You just want to ensure that he remains interested in expanding his knowledge. When he hits his limitations, he will be begging for assistance and you can point him in the right direction if he hasn't already branched out to reference material. |
24,157 | My younger brother is looking to start programming. He's 14, and technically-inclined, but no real experience programming. He's looking to me for guidance, and I don't feel as if my experience is enough, so I figured I'd ask here.
He's more interested in web programming, but also has an interest in desktop/mobile/server applications.
What would be a good learning path for him to take? I'm going to buy him a bunch of books for Christmas to get him started; the question is, what should he learn, and in which order?
The way I see it, he needs to learn theory and code. I'd like to start him off with Python or Ruby or PHP. If he wants to get in to web, he's also going to need to learn HTML, CSS, Javascript, etc.
Out of those three domains (Languages, Theory, Markup/Etc.), what is the best order do you think to learn in? Also, am I missing anything?
Thanks! | 2010/12/06 | [
"https://softwareengineering.stackexchange.com/questions/24157",
"https://softwareengineering.stackexchange.com",
"https://softwareengineering.stackexchange.com/users/9227/"
] | I *really* like the way that I came into programming; the only thing I can imagine changing is my access to books. My family didn't have the money for all the books I could devour, and our small rural library didn't exactly stock tech manuals. In the grand scheme of things, this is a small nitpick.
I wholeheartedly disagree with those who say you can't learn theory at 14. The earlier you learn the theory, the better. I read [*The Art of Computer Programming*](http://rads.stackoverflow.com/amzn/click/0321751043) at 14, though I'd already been coding a while.
The best thing you can do for your brother is to give him the tools to pursue his interests, and include him in the hacker/coder community whenever possible, so he can learn the *mindset* of a great coder.
* Nudge him away from proprietary tools wherever possible. There's so much more available to him in the open source world. I got as good as I am largely due to the guidance I received from more experienced folks in the open source community.
* If you can afford to, get him a [Safari](http://www.safaribooksonline.com/oreilly/knowledge/?cid=201012-orm-safari-knowledgewebhome) account, or help him buy books when needed. Even lending what you already own can help.
* Make sure he has access to a decent desktop or laptop *and* a server or VPS to experiment on. If mobile apps are his thing, make sure he has a phone or demo device to work on.
* Show him how to find IRC channels, mailing lists, etc. for the things he is interested in working with/on.
* Make sure he knows [how to ask smart questions](http://www.catb.org/~esr/faqs/smart-questions.html) and, conversely, the particulars of a [support leech](http://www.binaryredneck.net/node/161) so he knows what not to do.
* His first programming language isn't the most important factor. The totality of programming languages he learns is extremely important. One-language coders never pass a certain (relatively low) level of coding-foo. | - c
- c++
- python upto basic programming
- then HTML
- css
- javascript
- do hard with css its very important and javascript upto minimum validation level
- then srart python for html and getting url
- then framework if all stage are ok
levels are are follow
- basic level with command prompt to understand basic anatomy
- application level
- mouse graphic level
- web level
- designning level
- database level
dont forget to modularise things when you teach , undesrtand he will not understand javascript untill he know c/c++ or python etc
- once he know basic programming he can do HTML easily
- once he know html he llike css to
- but stop and try more with css so new ideas will generate and he feel he need help to get started with project then he will try to learn javascript and python with database for completion of project .
---
Added on 04/07/2013
-------------------
at the age of 14 when you want to try u r hands on programming first you need to understand what resource i needed to get completed the task or project or basic guidelines ,
well as i mensioned in my post learn basic programming first ,
it will help you to understand how the programs or software works with looping and condition , when next you think i understand all things but i dont klnow how to access mouse or do something when i click somewhere , you will try some libraries like graphics and mouse , so you understand how this works , next question will come to ur mind how to place my buttons and add events so they can interact with my code , so you will like to learn event programming then when you complete this stage , next question will arise i make very big code and i dont know how to call function its bit complicated , then you will try modularization , object and classes for application ,
after that you will think i know how to build basic application but i want to make application for database, then Database comes to mind , you like to learn but problem is that you feel its hard to get connected with code so you will work on database command prompt ,
its a programmic approach believe , i do and learn from same way and my basics arevery clear so i can understand how routines or program is work,
once you understand and much confident about you can make application for desktop try same skills for HTML
when you try for html , you will feel its much more easy than what you learn prevoiusly , just because you spent lot of time on basics .
in html , understand structure and how code works , once you know this things , you loike to give validation and database connectivity for application ,
give try and you get succed in a day , you can easily builkd form place buttons and validate with the halp of javascript,
then you will ask a question to yourself i made everything but what about look it dosnt match with what i see on internet , so try hard with css,
i am very sure if you dedicately try for css with best IDE or dreamweaver you will be in love wit hTML/css .
its enough for you to make a simple application or web with HTML,
at certain point you will ask another question to yourself how to make it dynamic when you know hyperlinks work well , then what does dynamic , lets think about database , that you learn prevoiusly ,
yes thats my point , show records , insert record , delete record and play with database locally with javascript and server side programming,
then other concept will come to your mind automatically , to create user , validation , session , user history, internationalization etc
and you will go ahead without guidance because your base is clear and you know what to do and what resource you needed to complete the task
---
thats all the stages .
basics are very important and right steps also .
once you know basics you can easily learn another language or migrate from one language to another language
thanks for reading
Added on 04/07/2013
-------------------
progarme is nothing but a set of instruction and routines ,
eg our daily routine ,
we wake up , take bath , lunch , work , dinner, go to sleep .
but if we mis any one of the task we feel unconfortable thats is if day is sunday when you have no work or on vacation the condition is change and daily routines also , so you get match with other things , thats what like programming approach , learn from practical not from what books tell you , books are good for reference but understand natural way how we react , work with the help of if-else statement , eg: suppose we have two work and both are very important , but we can do only one at a time , you pick 1st one and complete then you can go to home , if you pick second then you need to work next 5 hours , else if you complete both work , you get 1 day leave ,thats about programming approach |
24,157 | My younger brother is looking to start programming. He's 14, and technically-inclined, but no real experience programming. He's looking to me for guidance, and I don't feel as if my experience is enough, so I figured I'd ask here.
He's more interested in web programming, but also has an interest in desktop/mobile/server applications.
What would be a good learning path for him to take? I'm going to buy him a bunch of books for Christmas to get him started; the question is, what should he learn, and in which order?
The way I see it, he needs to learn theory and code. I'd like to start him off with Python or Ruby or PHP. If he wants to get in to web, he's also going to need to learn HTML, CSS, Javascript, etc.
Out of those three domains (Languages, Theory, Markup/Etc.), what is the best order do you think to learn in? Also, am I missing anything?
Thanks! | 2010/12/06 | [
"https://softwareengineering.stackexchange.com/questions/24157",
"https://softwareengineering.stackexchange.com",
"https://softwareengineering.stackexchange.com/users/9227/"
] | web / desktop / mobile / server programming? Seems like to me, he is interested in everything. The problem is however, he's gotta start with something.
Many will disagree, as of course there is no "right" answer to this, but I'd buy him a book on Python (*Learning Python* is thick and thorough enough to keep him busy for a long time), and it is definitely a language which will give him a good ratio of stuff I learned vs. eye candy (i.e. what can be achieved with it). It is also a good starting point for many of the above.
After that, see what he favours the most of the above mentioned, and direct him further with advice in that direction. | My logical preference based on what I know now:
1. Figuring out how things work now - While you state he is technically-inclined, how well does he understand how a computer works at this point? For example, does he understand differences between mark-up and scripts? What about writing little scripts to do this or that? This would be my suggestion for a starting point as demystifying what we have around us is a good starting point given all of stuff that could be explored pretty freely.
2. Pick a language, IDE, and source control. Now while this may seem like quite a bit to hurl at someone, these are the rather basic tools that with a little practice he may well then move on to bigger things. Figuring out how to make a "Hello World!" web page that has the message embedded in JavaScript isn't a bad starting point if one wants something a bit more concrete here.
3. Now start adding some of the harder stuff. How to do loops or conditions? This isn't really that fancy yet but we're still at the understanding the building block stage here. Lastly introduce the idea of classes and what are some ideas behind this concept.
Those would be where I'd start if someone wanted to get some basics of my skill-set. |
24,157 | My younger brother is looking to start programming. He's 14, and technically-inclined, but no real experience programming. He's looking to me for guidance, and I don't feel as if my experience is enough, so I figured I'd ask here.
He's more interested in web programming, but also has an interest in desktop/mobile/server applications.
What would be a good learning path for him to take? I'm going to buy him a bunch of books for Christmas to get him started; the question is, what should he learn, and in which order?
The way I see it, he needs to learn theory and code. I'd like to start him off with Python or Ruby or PHP. If he wants to get in to web, he's also going to need to learn HTML, CSS, Javascript, etc.
Out of those three domains (Languages, Theory, Markup/Etc.), what is the best order do you think to learn in? Also, am I missing anything?
Thanks! | 2010/12/06 | [
"https://softwareengineering.stackexchange.com/questions/24157",
"https://softwareengineering.stackexchange.com",
"https://softwareengineering.stackexchange.com/users/9227/"
] | I *really* like the way that I came into programming; the only thing I can imagine changing is my access to books. My family didn't have the money for all the books I could devour, and our small rural library didn't exactly stock tech manuals. In the grand scheme of things, this is a small nitpick.
I wholeheartedly disagree with those who say you can't learn theory at 14. The earlier you learn the theory, the better. I read [*The Art of Computer Programming*](http://rads.stackoverflow.com/amzn/click/0321751043) at 14, though I'd already been coding a while.
The best thing you can do for your brother is to give him the tools to pursue his interests, and include him in the hacker/coder community whenever possible, so he can learn the *mindset* of a great coder.
* Nudge him away from proprietary tools wherever possible. There's so much more available to him in the open source world. I got as good as I am largely due to the guidance I received from more experienced folks in the open source community.
* If you can afford to, get him a [Safari](http://www.safaribooksonline.com/oreilly/knowledge/?cid=201012-orm-safari-knowledgewebhome) account, or help him buy books when needed. Even lending what you already own can help.
* Make sure he has access to a decent desktop or laptop *and* a server or VPS to experiment on. If mobile apps are his thing, make sure he has a phone or demo device to work on.
* Show him how to find IRC channels, mailing lists, etc. for the things he is interested in working with/on.
* Make sure he knows [how to ask smart questions](http://www.catb.org/~esr/faqs/smart-questions.html) and, conversely, the particulars of a [support leech](http://www.binaryredneck.net/node/161) so he knows what not to do.
* His first programming language isn't the most important factor. The totality of programming languages he learns is extremely important. One-language coders never pass a certain (relatively low) level of coding-foo. | I personally wouldn't start with the hardcore theory. I'd start with practical programming intermingled with some elements of the theory. It could keep one much more motivated and not scare him off.
It is for instance a case with musical schools. A huge portion of students quit because they get bored with the theory and eventually lose interest.
Besides, the theory is not that good when it is learned before having gotten your hands dirty with practice. You won't know when and how to apply it.
But if you had some theory knowledge then practiced a lot, after that a serious course in IT would push you on a different level. Otherwise the years spent in a university are just wasted on a deaf year.
In that order:
1. Some basic theory about hardware, computer architecture and programing that hardware. Just basic.
2. Then develop practical things. Basic applications to keep interest. First local, then something with graphics. Web pages not yet since you would want to demonstrate the server-side programming and it is often useless without databases.
3. Drop him some database knowledge crops
4. Interface you local application with the database. Then try web development.
5. Adjust the course as you go. |
24,157 | My younger brother is looking to start programming. He's 14, and technically-inclined, but no real experience programming. He's looking to me for guidance, and I don't feel as if my experience is enough, so I figured I'd ask here.
He's more interested in web programming, but also has an interest in desktop/mobile/server applications.
What would be a good learning path for him to take? I'm going to buy him a bunch of books for Christmas to get him started; the question is, what should he learn, and in which order?
The way I see it, he needs to learn theory and code. I'd like to start him off with Python or Ruby or PHP. If he wants to get in to web, he's also going to need to learn HTML, CSS, Javascript, etc.
Out of those three domains (Languages, Theory, Markup/Etc.), what is the best order do you think to learn in? Also, am I missing anything?
Thanks! | 2010/12/06 | [
"https://softwareengineering.stackexchange.com/questions/24157",
"https://softwareengineering.stackexchange.com",
"https://softwareengineering.stackexchange.com/users/9227/"
] | I *really* like the way that I came into programming; the only thing I can imagine changing is my access to books. My family didn't have the money for all the books I could devour, and our small rural library didn't exactly stock tech manuals. In the grand scheme of things, this is a small nitpick.
I wholeheartedly disagree with those who say you can't learn theory at 14. The earlier you learn the theory, the better. I read [*The Art of Computer Programming*](http://rads.stackoverflow.com/amzn/click/0321751043) at 14, though I'd already been coding a while.
The best thing you can do for your brother is to give him the tools to pursue his interests, and include him in the hacker/coder community whenever possible, so he can learn the *mindset* of a great coder.
* Nudge him away from proprietary tools wherever possible. There's so much more available to him in the open source world. I got as good as I am largely due to the guidance I received from more experienced folks in the open source community.
* If you can afford to, get him a [Safari](http://www.safaribooksonline.com/oreilly/knowledge/?cid=201012-orm-safari-knowledgewebhome) account, or help him buy books when needed. Even lending what you already own can help.
* Make sure he has access to a decent desktop or laptop *and* a server or VPS to experiment on. If mobile apps are his thing, make sure he has a phone or demo device to work on.
* Show him how to find IRC channels, mailing lists, etc. for the things he is interested in working with/on.
* Make sure he knows [how to ask smart questions](http://www.catb.org/~esr/faqs/smart-questions.html) and, conversely, the particulars of a [support leech](http://www.binaryredneck.net/node/161) so he knows what not to do.
* His first programming language isn't the most important factor. The totality of programming languages he learns is extremely important. One-language coders never pass a certain (relatively low) level of coding-foo. | Does his high school offer classes in computer science? For example in the United States the Advanced Placement program has a computer science class that goes through quite a bit of the basic computer science concepts (flow of control, basic object oriented development practices, loops, etc.).
I was able to attend a high school that offered computer science courses for basically all 4 years (from an introductory course through to basic LIPS, MIPS, and Open GL). I ended up testing out of the basics in college and then re-learning a lot of the other languages and topics in upper level courses. I can tell you that 14-17 year old brain had a lot more difficulty wrapping around the theory than an 18-22 year old brain did. Topics like recursion, pointer arithmetic, low-level programming, network topography, and functional programming took me a long time to get in high school, but the second time around in college I found them to be a breeze, perhaps because I'd already tackled them but also perhaps because of what developmental scientists have proved about the young brain - some of the abstract thinking required for higher math and CS concepts is still developing.
Even though it was difficult, thinking through CS starting at 14 is extremely helpful. Doing it without teachers seems like it would have been complicated. I would've spent time developing web pages for fun because it's what I loved to do back then (and now), but I would never have taught myself pointers, recursion, and LISP for fun at the time. |
24,157 | My younger brother is looking to start programming. He's 14, and technically-inclined, but no real experience programming. He's looking to me for guidance, and I don't feel as if my experience is enough, so I figured I'd ask here.
He's more interested in web programming, but also has an interest in desktop/mobile/server applications.
What would be a good learning path for him to take? I'm going to buy him a bunch of books for Christmas to get him started; the question is, what should he learn, and in which order?
The way I see it, he needs to learn theory and code. I'd like to start him off with Python or Ruby or PHP. If he wants to get in to web, he's also going to need to learn HTML, CSS, Javascript, etc.
Out of those three domains (Languages, Theory, Markup/Etc.), what is the best order do you think to learn in? Also, am I missing anything?
Thanks! | 2010/12/06 | [
"https://softwareengineering.stackexchange.com/questions/24157",
"https://softwareengineering.stackexchange.com",
"https://softwareengineering.stackexchange.com/users/9227/"
] | Does his high school offer classes in computer science? For example in the United States the Advanced Placement program has a computer science class that goes through quite a bit of the basic computer science concepts (flow of control, basic object oriented development practices, loops, etc.).
I was able to attend a high school that offered computer science courses for basically all 4 years (from an introductory course through to basic LIPS, MIPS, and Open GL). I ended up testing out of the basics in college and then re-learning a lot of the other languages and topics in upper level courses. I can tell you that 14-17 year old brain had a lot more difficulty wrapping around the theory than an 18-22 year old brain did. Topics like recursion, pointer arithmetic, low-level programming, network topography, and functional programming took me a long time to get in high school, but the second time around in college I found them to be a breeze, perhaps because I'd already tackled them but also perhaps because of what developmental scientists have proved about the young brain - some of the abstract thinking required for higher math and CS concepts is still developing.
Even though it was difficult, thinking through CS starting at 14 is extremely helpful. Doing it without teachers seems like it would have been complicated. I would've spent time developing web pages for fun because it's what I loved to do back then (and now), but I would never have taught myself pointers, recursion, and LISP for fun at the time. | I personally wouldn't start with the hardcore theory. I'd start with practical programming intermingled with some elements of the theory. It could keep one much more motivated and not scare him off.
It is for instance a case with musical schools. A huge portion of students quit because they get bored with the theory and eventually lose interest.
Besides, the theory is not that good when it is learned before having gotten your hands dirty with practice. You won't know when and how to apply it.
But if you had some theory knowledge then practiced a lot, after that a serious course in IT would push you on a different level. Otherwise the years spent in a university are just wasted on a deaf year.
In that order:
1. Some basic theory about hardware, computer architecture and programing that hardware. Just basic.
2. Then develop practical things. Basic applications to keep interest. First local, then something with graphics. Web pages not yet since you would want to demonstrate the server-side programming and it is often useless without databases.
3. Drop him some database knowledge crops
4. Interface you local application with the database. Then try web development.
5. Adjust the course as you go. |
24,157 | My younger brother is looking to start programming. He's 14, and technically-inclined, but no real experience programming. He's looking to me for guidance, and I don't feel as if my experience is enough, so I figured I'd ask here.
He's more interested in web programming, but also has an interest in desktop/mobile/server applications.
What would be a good learning path for him to take? I'm going to buy him a bunch of books for Christmas to get him started; the question is, what should he learn, and in which order?
The way I see it, he needs to learn theory and code. I'd like to start him off with Python or Ruby or PHP. If he wants to get in to web, he's also going to need to learn HTML, CSS, Javascript, etc.
Out of those three domains (Languages, Theory, Markup/Etc.), what is the best order do you think to learn in? Also, am I missing anything?
Thanks! | 2010/12/06 | [
"https://softwareengineering.stackexchange.com/questions/24157",
"https://softwareengineering.stackexchange.com",
"https://softwareengineering.stackexchange.com/users/9227/"
] | I'd go with learning stuff for the mobile phone arena, that's prime real estate there. Get him set up with an IDE that has a phone emulator, and **get him a phone he can push the apps to**.
Set him up for some real world usage and hacking, supplemented with some theory from your books to guide him. Make sure they have good samples. | - c
- c++
- python upto basic programming
- then HTML
- css
- javascript
- do hard with css its very important and javascript upto minimum validation level
- then srart python for html and getting url
- then framework if all stage are ok
levels are are follow
- basic level with command prompt to understand basic anatomy
- application level
- mouse graphic level
- web level
- designning level
- database level
dont forget to modularise things when you teach , undesrtand he will not understand javascript untill he know c/c++ or python etc
- once he know basic programming he can do HTML easily
- once he know html he llike css to
- but stop and try more with css so new ideas will generate and he feel he need help to get started with project then he will try to learn javascript and python with database for completion of project .
---
Added on 04/07/2013
-------------------
at the age of 14 when you want to try u r hands on programming first you need to understand what resource i needed to get completed the task or project or basic guidelines ,
well as i mensioned in my post learn basic programming first ,
it will help you to understand how the programs or software works with looping and condition , when next you think i understand all things but i dont klnow how to access mouse or do something when i click somewhere , you will try some libraries like graphics and mouse , so you understand how this works , next question will come to ur mind how to place my buttons and add events so they can interact with my code , so you will like to learn event programming then when you complete this stage , next question will arise i make very big code and i dont know how to call function its bit complicated , then you will try modularization , object and classes for application ,
after that you will think i know how to build basic application but i want to make application for database, then Database comes to mind , you like to learn but problem is that you feel its hard to get connected with code so you will work on database command prompt ,
its a programmic approach believe , i do and learn from same way and my basics arevery clear so i can understand how routines or program is work,
once you understand and much confident about you can make application for desktop try same skills for HTML
when you try for html , you will feel its much more easy than what you learn prevoiusly , just because you spent lot of time on basics .
in html , understand structure and how code works , once you know this things , you loike to give validation and database connectivity for application ,
give try and you get succed in a day , you can easily builkd form place buttons and validate with the halp of javascript,
then you will ask a question to yourself i made everything but what about look it dosnt match with what i see on internet , so try hard with css,
i am very sure if you dedicately try for css with best IDE or dreamweaver you will be in love wit hTML/css .
its enough for you to make a simple application or web with HTML,
at certain point you will ask another question to yourself how to make it dynamic when you know hyperlinks work well , then what does dynamic , lets think about database , that you learn prevoiusly ,
yes thats my point , show records , insert record , delete record and play with database locally with javascript and server side programming,
then other concept will come to your mind automatically , to create user , validation , session , user history, internationalization etc
and you will go ahead without guidance because your base is clear and you know what to do and what resource you needed to complete the task
---
thats all the stages .
basics are very important and right steps also .
once you know basics you can easily learn another language or migrate from one language to another language
thanks for reading
Added on 04/07/2013
-------------------
progarme is nothing but a set of instruction and routines ,
eg our daily routine ,
we wake up , take bath , lunch , work , dinner, go to sleep .
but if we mis any one of the task we feel unconfortable thats is if day is sunday when you have no work or on vacation the condition is change and daily routines also , so you get match with other things , thats what like programming approach , learn from practical not from what books tell you , books are good for reference but understand natural way how we react , work with the help of if-else statement , eg: suppose we have two work and both are very important , but we can do only one at a time , you pick 1st one and complete then you can go to home , if you pick second then you need to work next 5 hours , else if you complete both work , you get 1 day leave ,thats about programming approach |
24,157 | My younger brother is looking to start programming. He's 14, and technically-inclined, but no real experience programming. He's looking to me for guidance, and I don't feel as if my experience is enough, so I figured I'd ask here.
He's more interested in web programming, but also has an interest in desktop/mobile/server applications.
What would be a good learning path for him to take? I'm going to buy him a bunch of books for Christmas to get him started; the question is, what should he learn, and in which order?
The way I see it, he needs to learn theory and code. I'd like to start him off with Python or Ruby or PHP. If he wants to get in to web, he's also going to need to learn HTML, CSS, Javascript, etc.
Out of those three domains (Languages, Theory, Markup/Etc.), what is the best order do you think to learn in? Also, am I missing anything?
Thanks! | 2010/12/06 | [
"https://softwareengineering.stackexchange.com/questions/24157",
"https://softwareengineering.stackexchange.com",
"https://softwareengineering.stackexchange.com/users/9227/"
] | I'd go with learning stuff for the mobile phone arena, that's prime real estate there. Get him set up with an IDE that has a phone emulator, and **get him a phone he can push the apps to**.
Set him up for some real world usage and hacking, supplemented with some theory from your books to guide him. Make sure they have good samples. | I never thought I'd say this, but get him [Alice 3.0](http://www.alice.org/index.php?page=alice3/download "Alice 3.0").
I hate Alice with the burning fury of a thousand suns, but it definitely does do a good job of teaching the fundamentals of programming (loops, statements, functions, etc.) when coupled with a decent tutorial.
Once he's solid on the basics, move on to a more practical text-based language. |
10,134,396 | Just starting to learn linux and I have an Amazon EC2 server running Ubuntu 11.10. I'm trying to learn node.js and get a simple game server up and running. My home machine is Windows 7 so I'm using PuTTy to SSH into my EC2 server. I was wondering what IDE would you guys recommend?
* I like NetBeans a lot and this is my preferred IDE for php, but there is no node.js project type and little support via plugins.
* I'm not a big fan of Eclipse since it seems more complicated than it needs to be - but if that's the best I'll use it - currently I have Eclipse for PHP Developers (Helios) and Indigo - which would be best? Do the versions really matter? | 2012/04/13 | [
"https://Stackoverflow.com/questions/10134396",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/550595/"
] | Intellij IDEA is always worth a look. It is my personal favorite. | You can try Microsoft WebMatrix a tool from Microsoft. You can find further details @ <http://www.microsoft.com/web/webmatrix/> |
10,134,396 | Just starting to learn linux and I have an Amazon EC2 server running Ubuntu 11.10. I'm trying to learn node.js and get a simple game server up and running. My home machine is Windows 7 so I'm using PuTTy to SSH into my EC2 server. I was wondering what IDE would you guys recommend?
* I like NetBeans a lot and this is my preferred IDE for php, but there is no node.js project type and little support via plugins.
* I'm not a big fan of Eclipse since it seems more complicated than it needs to be - but if that's the best I'll use it - currently I have Eclipse for PHP Developers (Helios) and Indigo - which would be best? Do the versions really matter? | 2012/04/13 | [
"https://Stackoverflow.com/questions/10134396",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/550595/"
] | WebStorm is a paired down version of InteliJ that focusses just on Javascript rather than Java, went through a dozen IDE's and text editors until I came across it - integrates with the Node server to enable breakpoints, debugging, etc. Only $49 for a personal version.
<http://www.jetbrains.com/webstorm/> | You can try Microsoft WebMatrix a tool from Microsoft. You can find further details @ <http://www.microsoft.com/web/webmatrix/> |
10,134,396 | Just starting to learn linux and I have an Amazon EC2 server running Ubuntu 11.10. I'm trying to learn node.js and get a simple game server up and running. My home machine is Windows 7 so I'm using PuTTy to SSH into my EC2 server. I was wondering what IDE would you guys recommend?
* I like NetBeans a lot and this is my preferred IDE for php, but there is no node.js project type and little support via plugins.
* I'm not a big fan of Eclipse since it seems more complicated than it needs to be - but if that's the best I'll use it - currently I have Eclipse for PHP Developers (Helios) and Indigo - which would be best? Do the versions really matter? | 2012/04/13 | [
"https://Stackoverflow.com/questions/10134396",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/550595/"
] | I like [Sublime Text 2](http://www.sublimetext.com/2). It has a lot of great plug-ins for Javascript (JSLint one is a must have) and I find that it stays out of the way when I'm just trying to get work done. It's also multi-platform so you can have a consistent editing environment across all of your machines. | You can try Microsoft WebMatrix a tool from Microsoft. You can find further details @ <http://www.microsoft.com/web/webmatrix/> |
12,963,945 | I am currently working on asp.net mvc4 web application. Part of the application, users can log in and browse the site etc. The data for the site is stored in a sql server database, contains users information etc.
A new feature to the site will be for all users to add comments to particular products shown on the site. As there could be hundreds of thousands of customers and thousands of products, this is alot of data.
So I have started looking at a NoSql option for this data and not store it in the relational sql server database. I have been looking at Mongo Db. My first question, is this a correct approach I am taking?
Next topic, how easily does c#/.net integrate with a mongo database. I havent worked with this before so my knowledge in the area is poor. Ideally, I would be querying (for the want of the correct term) the mongo db for comments based on a particular products identifier. I presume I can write a query style to get this data.
My next question is around the redundancy of a mongo db. With sql server, I have a fail over server if an issue occurs with the main db server. Is there a similar concept with mongo or how does it work? My consideration is for mongo to run on the same server as the sql server database. The data in the mongo db will not be mission critical, but the data in sql server is. My web application will run on multiple servers in a load balanced environment.
Can a mongo db be easily moved to another server? ie. how well can it be scaled out. Even can data from it be copied to another mongo db?
I appreciate my questions are of a beginner standard but I am currently researching the topic so assistance would be great. | 2012/10/18 | [
"https://Stackoverflow.com/questions/12963945",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/373674/"
] | Sql server should suffice for housing comments as long as you have some caching configured. The good thing about Sql Server is the data integrity of the foreign keys as well as the querying power.
However, working with Mongo in C# is not a huge deal. There is a slight learning curve, but this is with learning any new technology.
**Connecting and Using MongoDB**
MongoDB has official drivers and NuGet packages for you to use. <http://www.mongodb.org/display/DOCS/CSharp+Language+Center> for more information there.
**Redundancy**
Mongo supports replica sets where your second server would mimic all the data from the first server. Information on setting this up can be found here: <http://docs.mongodb.org/manual/tutorial/deploy-replica-set/> It should be noted though that querying is a bit different in MongoDB than Sql Server.
Now I personally use mongoDB in one of my enterprise applications, but I would say as a rule of thumb: If you don't absolutely need to use it you would probably be better off sticking with one database engine. Mostly so that you only have to manage one database engine. Just my opinion though. Maybe redis for caching? | If you have not hardware memory problem(you can buy a lots of memory , you will need) Mongo can be your solution. |
12,963,945 | I am currently working on asp.net mvc4 web application. Part of the application, users can log in and browse the site etc. The data for the site is stored in a sql server database, contains users information etc.
A new feature to the site will be for all users to add comments to particular products shown on the site. As there could be hundreds of thousands of customers and thousands of products, this is alot of data.
So I have started looking at a NoSql option for this data and not store it in the relational sql server database. I have been looking at Mongo Db. My first question, is this a correct approach I am taking?
Next topic, how easily does c#/.net integrate with a mongo database. I havent worked with this before so my knowledge in the area is poor. Ideally, I would be querying (for the want of the correct term) the mongo db for comments based on a particular products identifier. I presume I can write a query style to get this data.
My next question is around the redundancy of a mongo db. With sql server, I have a fail over server if an issue occurs with the main db server. Is there a similar concept with mongo or how does it work? My consideration is for mongo to run on the same server as the sql server database. The data in the mongo db will not be mission critical, but the data in sql server is. My web application will run on multiple servers in a load balanced environment.
Can a mongo db be easily moved to another server? ie. how well can it be scaled out. Even can data from it be copied to another mongo db?
I appreciate my questions are of a beginner standard but I am currently researching the topic so assistance would be great. | 2012/10/18 | [
"https://Stackoverflow.com/questions/12963945",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/373674/"
] | Sql server should suffice for housing comments as long as you have some caching configured. The good thing about Sql Server is the data integrity of the foreign keys as well as the querying power.
However, working with Mongo in C# is not a huge deal. There is a slight learning curve, but this is with learning any new technology.
**Connecting and Using MongoDB**
MongoDB has official drivers and NuGet packages for you to use. <http://www.mongodb.org/display/DOCS/CSharp+Language+Center> for more information there.
**Redundancy**
Mongo supports replica sets where your second server would mimic all the data from the first server. Information on setting this up can be found here: <http://docs.mongodb.org/manual/tutorial/deploy-replica-set/> It should be noted though that querying is a bit different in MongoDB than Sql Server.
Now I personally use mongoDB in one of my enterprise applications, but I would say as a rule of thumb: If you don't absolutely need to use it you would probably be better off sticking with one database engine. Mostly so that you only have to manage one database engine. Just my opinion though. Maybe redis for caching? | the thing is in mongodb design you will do a kind of denormalization...
and in my opinion hundreds of thousands user case your sql server is enough... do some more denormalizations in your db design and try implementing good cache design....
you say you are new to mongodb... so there is going to be a learning curve...
put more rams and cpus till you will have millions users...
to feel safe with mongodb you are going to need at least 3 servers
please also check this link
[is this the optimal minimum setup for mongodb to allow for sharding/scaling?](https://stackoverflow.com/questions/5684993/is-this-the-optimal-minimum-setup-for-mongodb-to-allow-for-sharding-scaling) |
12,963,945 | I am currently working on asp.net mvc4 web application. Part of the application, users can log in and browse the site etc. The data for the site is stored in a sql server database, contains users information etc.
A new feature to the site will be for all users to add comments to particular products shown on the site. As there could be hundreds of thousands of customers and thousands of products, this is alot of data.
So I have started looking at a NoSql option for this data and not store it in the relational sql server database. I have been looking at Mongo Db. My first question, is this a correct approach I am taking?
Next topic, how easily does c#/.net integrate with a mongo database. I havent worked with this before so my knowledge in the area is poor. Ideally, I would be querying (for the want of the correct term) the mongo db for comments based on a particular products identifier. I presume I can write a query style to get this data.
My next question is around the redundancy of a mongo db. With sql server, I have a fail over server if an issue occurs with the main db server. Is there a similar concept with mongo or how does it work? My consideration is for mongo to run on the same server as the sql server database. The data in the mongo db will not be mission critical, but the data in sql server is. My web application will run on multiple servers in a load balanced environment.
Can a mongo db be easily moved to another server? ie. how well can it be scaled out. Even can data from it be copied to another mongo db?
I appreciate my questions are of a beginner standard but I am currently researching the topic so assistance would be great. | 2012/10/18 | [
"https://Stackoverflow.com/questions/12963945",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/373674/"
] | Sql server should suffice for housing comments as long as you have some caching configured. The good thing about Sql Server is the data integrity of the foreign keys as well as the querying power.
However, working with Mongo in C# is not a huge deal. There is a slight learning curve, but this is with learning any new technology.
**Connecting and Using MongoDB**
MongoDB has official drivers and NuGet packages for you to use. <http://www.mongodb.org/display/DOCS/CSharp+Language+Center> for more information there.
**Redundancy**
Mongo supports replica sets where your second server would mimic all the data from the first server. Information on setting this up can be found here: <http://docs.mongodb.org/manual/tutorial/deploy-replica-set/> It should be noted though that querying is a bit different in MongoDB than Sql Server.
Now I personally use mongoDB in one of my enterprise applications, but I would say as a rule of thumb: If you don't absolutely need to use it you would probably be better off sticking with one database engine. Mostly so that you only have to manage one database engine. Just my opinion though. Maybe redis for caching? | try this
[MVC Application With MongoDB - Part 1](http://www.c-sharpcorner.com/UploadFile/58e23e/mvc-application-with-mongodb-part-1/)
[MVC Application With MongoDB - Part 2](http://www.c-sharpcorner.com/UploadFile/58e23e/mvc-application-with-mongodb-part-2/)
[Getting Started With MongoDB in ASP.Net MVC4](http://www.c-sharpcorner.com/uploadfile/370e35/getting-started-with-mongodb-and-asp-net-mvc4-day-3/) |
692 | Is there a command I can give the Monero daemon to calculate the total of all coinbase transactions so far?
How do block explorers calculate the Monero coin supply and how can I verify their accuracy? | 2016/08/01 | [
"https://monero.stackexchange.com/questions/692",
"https://monero.stackexchange.com",
"https://monero.stackexchange.com/users/164/"
] | There is no such command. However, it'd be easy to add. Feel free to add a request for this on <https://github.com/monero-project/bitmonero/issues> | This question has a fundamental misunderstanding of money supply and the link with coinbase transactions.
You would be right in a perfectly secure system, the coinbase transactions are the only way to add coins to the money supply.
The reality however is different. Bugs in the protocol ([like the infamous keyimage bug that allowed the creation of infinite money](https://getmonero.org/2017/05/17/disclosure-of-a-major-bug-in-cryptonote-based-currencies.html)) can create additional coins in the system.
Creating commands like print\_coinbase\_tx\_sum may give you a good indication of the money supply but it should not be taken for facts. |
326,576 | Here's an interesting scenario:
[A question](https://scifi.stackexchange.com/questions/207541/how-is-accio-a-safe-spell) was closed as off-topic. I voted to reopen it and it was eventually reopened. However, in the process of getting reopened the question was edited. I closed the edited question as a duplicate of a different question, and another user reopened it (both of us have gold tag badges). The question was then rolled back several times, until it was back in the form that had been closed as off-topic.
At this point someone voted to close it again as off-topic, and here's where it gets interesting. Normally, once you vote to close a question and it gets closed, or you vote to reopen a question and it gets reopened, you can no longer cast that same vote. Since I had already voted to close this question (as a duplicate) I no longer had the ability to cast a vote to close it as off-topic. However, I was also prevented from voting to leave it open as not off-topic.
[](https://i.stack.imgur.com/daCxs.jpg)
[](https://i.stack.imgur.com/FZANn.jpg)
Why am I unable to vote to leave this question open? I can think of two possible reasons:
1. I already voted to close it and it was closed.
2. I already voted to reopen it and it was reopened.
Yet neither of these reasons seem so logical. I voted to close the question for a different reason, so why should I not be able to vote that the *current* reason does not apply? (I suppose this could be tested by finding a case where someone voted to close and the question was closed and then it was reopened by *other* users and then sent to the Close Queue for a different reason.) If I can even vote to actually reopen a question that I have participated in closing, I should *a fortiori* be able to merely vote to leave open a question I participated in closing.
And if it's because I reopened the question, why should I lose my leave open vote? In general, when you are involved in closing or reopening a question you can still vote to leave the question the way it is if it comes up in the queue again. So the fact that my reopen vote succeeded should not be a reason for me to lose my leave open vote.
And if neither one of the above factors is a good reason for me to lose my leave open vote then the combination of them should also not remove my ability to vote.
(I tagged this as [support](/questions/tagged/support "show questions tagged 'support'") because I want to know why the system is set up this way. If it turns out that there's no good reason, I suppose it can be changed to [bug](/questions/tagged/bug "show questions tagged 'bug'") or [feature-request](/questions/tagged/feature-request "show questions tagged 'feature-request'").) | 2019/04/10 | [
"https://meta.stackexchange.com/questions/326576",
"https://meta.stackexchange.com",
"https://meta.stackexchange.com/users/390967/"
] | If you've already cast a close vote, you can't cast any further close votes on that question, and so it won't let you review in the Close Votes queue. (Reopen has nothing to do with it.)
On the one hand, you could argue that this is an oversight, since it *is* still potentially useful to Leave Open, and any items that should be closed can simply be skipped by those who already voted to close them once.
On the other hand, skipping is all too infrequent, and this therefore seems likely to lead to quite a few mistaken Leave Open votes, proportionally.
Reflecting on the actual prevalence leads to the inevitable conclusion: this is too rare a corner case to really be worth fixing. *Most* questions that were closed once by you don't need to be kept open *by you specifically*. If they're worth keeping open, they'll *probably* manage it one way or another. If not, time for meta! | "Voting to leave open" isn't really a vote on the closure of the question: no amount of "leave open" voting will keep a question from being closed if it accumulates the necessary number of close votes. Rather, it's a vote to kick the question out of the "close votes" review queue.
You've already cast your close vote and your reopen vote, so there's nothing left for you to do with the question.
See [What exactly happens with the button "Leave Open" (previously "Do Not Close")?](https://meta.stackexchange.com/questions/139834/what-exactly-happens-with-the-button-leave-open-previously-do-not-close) |
3,242 | I don't know how to put it. I have never published before. Previously my one paper was rejected, that was because the experiments were not ready and my advisor asked me to still submit it just to have practice.
Now, 6 months later, I am writing another paper (on a similar topic). I have done some experiments, some are still going on. My advisor had advised me that "even if your experiments are not complete you should still start writing the paper".
But I'm doing a lot of procrastination and I think I am scared of writing and possible rejection. I have done a lot of writing in other forms before, like blogging etc. But the thought of writing an academic paper with all the stringent rules (everything has to be clearly written, cited, nice flow of thoughts) is scary.
Please let me know how should one's mindset be while in the process of writing a paper. | 2012/09/17 | [
"https://academia.stackexchange.com/questions/3242",
"https://academia.stackexchange.com",
"https://academia.stackexchange.com/users/2643/"
] | Like anything else in life, perform the task with the goal to succeed, and the likely outcome of failure.
Understand that rejection is all a part of the game. Very few people succeed more than they fail. As a matter of fact, upwards of 90% of all academic papers are rejected for one thing or another.
The most important thing is to keep track of mistakes that you've made with past academic papers. Write them down as bullet-points on a separate sheet of paper. Keep that paper right in front of you as you work on other academic papers to remind you of what **NOT** to do.
Practice makes perfect. If you're just starting out, it's likely that you're going to have many failures before you have a successful one. | Rejection can be hard to handle, but a good motivator is to look at people who's work was rejected initially widely, but ended up being immensely popular and profitable. Ghostbusters was rejected by three movie studios. Frank Herbert's manuscript for Dune was rejected by over 20 publishers. Lorenz's seminal paper on chaos was rejected several times if I remember correctly. |
3,242 | I don't know how to put it. I have never published before. Previously my one paper was rejected, that was because the experiments were not ready and my advisor asked me to still submit it just to have practice.
Now, 6 months later, I am writing another paper (on a similar topic). I have done some experiments, some are still going on. My advisor had advised me that "even if your experiments are not complete you should still start writing the paper".
But I'm doing a lot of procrastination and I think I am scared of writing and possible rejection. I have done a lot of writing in other forms before, like blogging etc. But the thought of writing an academic paper with all the stringent rules (everything has to be clearly written, cited, nice flow of thoughts) is scary.
Please let me know how should one's mindset be while in the process of writing a paper. | 2012/09/17 | [
"https://academia.stackexchange.com/questions/3242",
"https://academia.stackexchange.com",
"https://academia.stackexchange.com/users/2643/"
] | This is not really a complete answer, but it's too long for a comment, so here goes...
Remember that whatever you write now is not going be submitted. You don't need to overcome your fear quite yet because you're just putting words on the paper for your own sake. Just open your favorite text editor and write down everything you can think of. Forget about editing. You are just taking notes so that *you* can read it later and understand what you did and what you had on your mind. Don't filter yourself. You are just emptying your head to make room for new things. Write to forget.
Then, when you run out of things to write, go back and clean it up *a little* -- until you think of something else to write. Rinse and repeat.
As the content gradually becomes more complete, you will have more time and peace of mind to work on the quality of the writing and aligning it with all the best practices and advice and theory and rules of academic writing.
But for now, what's the first thing you think of that you've been working on in your project? Now open your text editor and write that thought down. | Like anything else in life, perform the task with the goal to succeed, and the likely outcome of failure.
Understand that rejection is all a part of the game. Very few people succeed more than they fail. As a matter of fact, upwards of 90% of all academic papers are rejected for one thing or another.
The most important thing is to keep track of mistakes that you've made with past academic papers. Write them down as bullet-points on a separate sheet of paper. Keep that paper right in front of you as you work on other academic papers to remind you of what **NOT** to do.
Practice makes perfect. If you're just starting out, it's likely that you're going to have many failures before you have a successful one. |
3,242 | I don't know how to put it. I have never published before. Previously my one paper was rejected, that was because the experiments were not ready and my advisor asked me to still submit it just to have practice.
Now, 6 months later, I am writing another paper (on a similar topic). I have done some experiments, some are still going on. My advisor had advised me that "even if your experiments are not complete you should still start writing the paper".
But I'm doing a lot of procrastination and I think I am scared of writing and possible rejection. I have done a lot of writing in other forms before, like blogging etc. But the thought of writing an academic paper with all the stringent rules (everything has to be clearly written, cited, nice flow of thoughts) is scary.
Please let me know how should one's mindset be while in the process of writing a paper. | 2012/09/17 | [
"https://academia.stackexchange.com/questions/3242",
"https://academia.stackexchange.com",
"https://academia.stackexchange.com/users/2643/"
] | This is not really a complete answer, but it's too long for a comment, so here goes...
Remember that whatever you write now is not going be submitted. You don't need to overcome your fear quite yet because you're just putting words on the paper for your own sake. Just open your favorite text editor and write down everything you can think of. Forget about editing. You are just taking notes so that *you* can read it later and understand what you did and what you had on your mind. Don't filter yourself. You are just emptying your head to make room for new things. Write to forget.
Then, when you run out of things to write, go back and clean it up *a little* -- until you think of something else to write. Rinse and repeat.
As the content gradually becomes more complete, you will have more time and peace of mind to work on the quality of the writing and aligning it with all the best practices and advice and theory and rules of academic writing.
But for now, what's the first thing you think of that you've been working on in your project? Now open your text editor and write that thought down. | If you didn't have any **scientific writing** class before, I think you should start buying a **book** about it, and read it.
There are many titles avilable.
If you get one, it can give you some **good advice** on how to write (good) scientific papers. |
3,242 | I don't know how to put it. I have never published before. Previously my one paper was rejected, that was because the experiments were not ready and my advisor asked me to still submit it just to have practice.
Now, 6 months later, I am writing another paper (on a similar topic). I have done some experiments, some are still going on. My advisor had advised me that "even if your experiments are not complete you should still start writing the paper".
But I'm doing a lot of procrastination and I think I am scared of writing and possible rejection. I have done a lot of writing in other forms before, like blogging etc. But the thought of writing an academic paper with all the stringent rules (everything has to be clearly written, cited, nice flow of thoughts) is scary.
Please let me know how should one's mindset be while in the process of writing a paper. | 2012/09/17 | [
"https://academia.stackexchange.com/questions/3242",
"https://academia.stackexchange.com",
"https://academia.stackexchange.com/users/2643/"
] | There are two points in your question: writing a good paper and the fear of being rejected. For the first point, there is no miracle recipe, although there are some clear guidelines of what is expected to be in a paper. You can find many useful resources on the Internet on "how to write an academic paper", and you will have to select what suits you the best. In general, a good way is to understand what you like in your favorite papers, and reproduce the same scheme.
As for the fear of rejection, well, it's a bit cliché, but you just have to get over it. People get papers rejected all the time, even the top professors, sometimes it is fair, sometimes it is not. If you plan to pursue in the academic world, you should expect to get papers rejected until you retire. It's normal not to like it, but somehow, you have to deal with it.
Most of the time, when a piece of work reaches a good level of maturity, I build a quick "submission tree", that is, I look at which conferences I could submit the work, and the overlap between the notification dates and the submission dates. At the end, I have something like: I could submit to Conf1, and if it's rejected, I have one week to make it better and to submit to Conf2, and if it's rejected, ..., or I could submit to Conf3, and if it's rejected, I have two weeks to work more and submit to Conf4, etc. So, basically, the possibility of rejection is directly included in the submission strategy. | Rejection can be hard to handle, but a good motivator is to look at people who's work was rejected initially widely, but ended up being immensely popular and profitable. Ghostbusters was rejected by three movie studios. Frank Herbert's manuscript for Dune was rejected by over 20 publishers. Lorenz's seminal paper on chaos was rejected several times if I remember correctly. |
3,242 | I don't know how to put it. I have never published before. Previously my one paper was rejected, that was because the experiments were not ready and my advisor asked me to still submit it just to have practice.
Now, 6 months later, I am writing another paper (on a similar topic). I have done some experiments, some are still going on. My advisor had advised me that "even if your experiments are not complete you should still start writing the paper".
But I'm doing a lot of procrastination and I think I am scared of writing and possible rejection. I have done a lot of writing in other forms before, like blogging etc. But the thought of writing an academic paper with all the stringent rules (everything has to be clearly written, cited, nice flow of thoughts) is scary.
Please let me know how should one's mindset be while in the process of writing a paper. | 2012/09/17 | [
"https://academia.stackexchange.com/questions/3242",
"https://academia.stackexchange.com",
"https://academia.stackexchange.com/users/2643/"
] | There are two points in your question: writing a good paper and the fear of being rejected. For the first point, there is no miracle recipe, although there are some clear guidelines of what is expected to be in a paper. You can find many useful resources on the Internet on "how to write an academic paper", and you will have to select what suits you the best. In general, a good way is to understand what you like in your favorite papers, and reproduce the same scheme.
As for the fear of rejection, well, it's a bit cliché, but you just have to get over it. People get papers rejected all the time, even the top professors, sometimes it is fair, sometimes it is not. If you plan to pursue in the academic world, you should expect to get papers rejected until you retire. It's normal not to like it, but somehow, you have to deal with it.
Most of the time, when a piece of work reaches a good level of maturity, I build a quick "submission tree", that is, I look at which conferences I could submit the work, and the overlap between the notification dates and the submission dates. At the end, I have something like: I could submit to Conf1, and if it's rejected, I have one week to make it better and to submit to Conf2, and if it's rejected, ..., or I could submit to Conf3, and if it's rejected, I have two weeks to work more and submit to Conf4, etc. So, basically, the possibility of rejection is directly included in the submission strategy. | Here is a great book about scientific writing, that concentrate on the article structure and the writing process more than on the grammar per se:
["Scientific Writing = Thinking in Words" by David Lindsay](http://www.publish.csiro.au/pid/6529.htm)
This book gives **good advices on the writing** *per se*, such as:
* What are the different section of a scientific article and what they should contain (e.g. how to choose a good title)
* Tips on how to improve the message you want to transmit in your article
* How to make a good poster/presentation
* ...
It also provides great advices on **how to build a good scientific question**. It explains how a good question can facilitate not only the writing process but also the overall research. For me it is actually the kind of book any young researcher should read even **before** starting their research. |
3,242 | I don't know how to put it. I have never published before. Previously my one paper was rejected, that was because the experiments were not ready and my advisor asked me to still submit it just to have practice.
Now, 6 months later, I am writing another paper (on a similar topic). I have done some experiments, some are still going on. My advisor had advised me that "even if your experiments are not complete you should still start writing the paper".
But I'm doing a lot of procrastination and I think I am scared of writing and possible rejection. I have done a lot of writing in other forms before, like blogging etc. But the thought of writing an academic paper with all the stringent rules (everything has to be clearly written, cited, nice flow of thoughts) is scary.
Please let me know how should one's mindset be while in the process of writing a paper. | 2012/09/17 | [
"https://academia.stackexchange.com/questions/3242",
"https://academia.stackexchange.com",
"https://academia.stackexchange.com/users/2643/"
] | If you didn't have any **scientific writing** class before, I think you should start buying a **book** about it, and read it.
There are many titles avilable.
If you get one, it can give you some **good advice** on how to write (good) scientific papers. | Rejection can be hard to handle, but a good motivator is to look at people who's work was rejected initially widely, but ended up being immensely popular and profitable. Ghostbusters was rejected by three movie studios. Frank Herbert's manuscript for Dune was rejected by over 20 publishers. Lorenz's seminal paper on chaos was rejected several times if I remember correctly. |
3,242 | I don't know how to put it. I have never published before. Previously my one paper was rejected, that was because the experiments were not ready and my advisor asked me to still submit it just to have practice.
Now, 6 months later, I am writing another paper (on a similar topic). I have done some experiments, some are still going on. My advisor had advised me that "even if your experiments are not complete you should still start writing the paper".
But I'm doing a lot of procrastination and I think I am scared of writing and possible rejection. I have done a lot of writing in other forms before, like blogging etc. But the thought of writing an academic paper with all the stringent rules (everything has to be clearly written, cited, nice flow of thoughts) is scary.
Please let me know how should one's mindset be while in the process of writing a paper. | 2012/09/17 | [
"https://academia.stackexchange.com/questions/3242",
"https://academia.stackexchange.com",
"https://academia.stackexchange.com/users/2643/"
] | One thing that might help with the fear of rejection is to view your paper as though it was a blog post. Obviously, you won't submit something in blog style to an academic journal, but it might help to think about why you blog. You have ideas and thoughts you think are important and you want to share them with a wide audience, who might be interested in your ideas or use them as a jumping-off point for something they want to do. The purpose of an academic paper is the same (well, in addition to the career benefits of publishing). You want to share what you're doing with people who will be interested in the results, and who might find inspiration for their own work in what you've done.
It might even help, as an exercise to get past writer's block, to write a blog post about your research. (You may not want or be able to actually publish it on your blog, but it might help your thought process either way.) What are you investigating, what are your methods, how is it going so far, etc.? You can then take some of that material, formalize the language, add the appropriate citations, and include it in the appropriate sections of your paper. But picturing your blog audience, rather than some journal committee, reading your first draft might take some of the pressure off.
Another thing I find helps me with fear of failure is to accept that the first draft of anything I write will be crappy and focus on getting ideas down and revising later. I also found, at least as an undergrad English major, that it's easier to just write late at night. Something about being tired takes the edge off my self-criticism and gets the ideas flowing. I describe it as my internal editor going to sleep by ten o'clock. | Here is a great book about scientific writing, that concentrate on the article structure and the writing process more than on the grammar per se:
["Scientific Writing = Thinking in Words" by David Lindsay](http://www.publish.csiro.au/pid/6529.htm)
This book gives **good advices on the writing** *per se*, such as:
* What are the different section of a scientific article and what they should contain (e.g. how to choose a good title)
* Tips on how to improve the message you want to transmit in your article
* How to make a good poster/presentation
* ...
It also provides great advices on **how to build a good scientific question**. It explains how a good question can facilitate not only the writing process but also the overall research. For me it is actually the kind of book any young researcher should read even **before** starting their research. |
3,242 | I don't know how to put it. I have never published before. Previously my one paper was rejected, that was because the experiments were not ready and my advisor asked me to still submit it just to have practice.
Now, 6 months later, I am writing another paper (on a similar topic). I have done some experiments, some are still going on. My advisor had advised me that "even if your experiments are not complete you should still start writing the paper".
But I'm doing a lot of procrastination and I think I am scared of writing and possible rejection. I have done a lot of writing in other forms before, like blogging etc. But the thought of writing an academic paper with all the stringent rules (everything has to be clearly written, cited, nice flow of thoughts) is scary.
Please let me know how should one's mindset be while in the process of writing a paper. | 2012/09/17 | [
"https://academia.stackexchange.com/questions/3242",
"https://academia.stackexchange.com",
"https://academia.stackexchange.com/users/2643/"
] | One thing that might help with the fear of rejection is to view your paper as though it was a blog post. Obviously, you won't submit something in blog style to an academic journal, but it might help to think about why you blog. You have ideas and thoughts you think are important and you want to share them with a wide audience, who might be interested in your ideas or use them as a jumping-off point for something they want to do. The purpose of an academic paper is the same (well, in addition to the career benefits of publishing). You want to share what you're doing with people who will be interested in the results, and who might find inspiration for their own work in what you've done.
It might even help, as an exercise to get past writer's block, to write a blog post about your research. (You may not want or be able to actually publish it on your blog, but it might help your thought process either way.) What are you investigating, what are your methods, how is it going so far, etc.? You can then take some of that material, formalize the language, add the appropriate citations, and include it in the appropriate sections of your paper. But picturing your blog audience, rather than some journal committee, reading your first draft might take some of the pressure off.
Another thing I find helps me with fear of failure is to accept that the first draft of anything I write will be crappy and focus on getting ideas down and revising later. I also found, at least as an undergrad English major, that it's easier to just write late at night. Something about being tired takes the edge off my self-criticism and gets the ideas flowing. I describe it as my internal editor going to sleep by ten o'clock. | If you didn't have any **scientific writing** class before, I think you should start buying a **book** about it, and read it.
There are many titles avilable.
If you get one, it can give you some **good advice** on how to write (good) scientific papers. |
3,242 | I don't know how to put it. I have never published before. Previously my one paper was rejected, that was because the experiments were not ready and my advisor asked me to still submit it just to have practice.
Now, 6 months later, I am writing another paper (on a similar topic). I have done some experiments, some are still going on. My advisor had advised me that "even if your experiments are not complete you should still start writing the paper".
But I'm doing a lot of procrastination and I think I am scared of writing and possible rejection. I have done a lot of writing in other forms before, like blogging etc. But the thought of writing an academic paper with all the stringent rules (everything has to be clearly written, cited, nice flow of thoughts) is scary.
Please let me know how should one's mindset be while in the process of writing a paper. | 2012/09/17 | [
"https://academia.stackexchange.com/questions/3242",
"https://academia.stackexchange.com",
"https://academia.stackexchange.com/users/2643/"
] | One thing that might help with the fear of rejection is to view your paper as though it was a blog post. Obviously, you won't submit something in blog style to an academic journal, but it might help to think about why you blog. You have ideas and thoughts you think are important and you want to share them with a wide audience, who might be interested in your ideas or use them as a jumping-off point for something they want to do. The purpose of an academic paper is the same (well, in addition to the career benefits of publishing). You want to share what you're doing with people who will be interested in the results, and who might find inspiration for their own work in what you've done.
It might even help, as an exercise to get past writer's block, to write a blog post about your research. (You may not want or be able to actually publish it on your blog, but it might help your thought process either way.) What are you investigating, what are your methods, how is it going so far, etc.? You can then take some of that material, formalize the language, add the appropriate citations, and include it in the appropriate sections of your paper. But picturing your blog audience, rather than some journal committee, reading your first draft might take some of the pressure off.
Another thing I find helps me with fear of failure is to accept that the first draft of anything I write will be crappy and focus on getting ideas down and revising later. I also found, at least as an undergrad English major, that it's easier to just write late at night. Something about being tired takes the edge off my self-criticism and gets the ideas flowing. I describe it as my internal editor going to sleep by ten o'clock. | Like anything else in life, perform the task with the goal to succeed, and the likely outcome of failure.
Understand that rejection is all a part of the game. Very few people succeed more than they fail. As a matter of fact, upwards of 90% of all academic papers are rejected for one thing or another.
The most important thing is to keep track of mistakes that you've made with past academic papers. Write them down as bullet-points on a separate sheet of paper. Keep that paper right in front of you as you work on other academic papers to remind you of what **NOT** to do.
Practice makes perfect. If you're just starting out, it's likely that you're going to have many failures before you have a successful one. |
3,242 | I don't know how to put it. I have never published before. Previously my one paper was rejected, that was because the experiments were not ready and my advisor asked me to still submit it just to have practice.
Now, 6 months later, I am writing another paper (on a similar topic). I have done some experiments, some are still going on. My advisor had advised me that "even if your experiments are not complete you should still start writing the paper".
But I'm doing a lot of procrastination and I think I am scared of writing and possible rejection. I have done a lot of writing in other forms before, like blogging etc. But the thought of writing an academic paper with all the stringent rules (everything has to be clearly written, cited, nice flow of thoughts) is scary.
Please let me know how should one's mindset be while in the process of writing a paper. | 2012/09/17 | [
"https://academia.stackexchange.com/questions/3242",
"https://academia.stackexchange.com",
"https://academia.stackexchange.com/users/2643/"
] | One thing that might help with the fear of rejection is to view your paper as though it was a blog post. Obviously, you won't submit something in blog style to an academic journal, but it might help to think about why you blog. You have ideas and thoughts you think are important and you want to share them with a wide audience, who might be interested in your ideas or use them as a jumping-off point for something they want to do. The purpose of an academic paper is the same (well, in addition to the career benefits of publishing). You want to share what you're doing with people who will be interested in the results, and who might find inspiration for their own work in what you've done.
It might even help, as an exercise to get past writer's block, to write a blog post about your research. (You may not want or be able to actually publish it on your blog, but it might help your thought process either way.) What are you investigating, what are your methods, how is it going so far, etc.? You can then take some of that material, formalize the language, add the appropriate citations, and include it in the appropriate sections of your paper. But picturing your blog audience, rather than some journal committee, reading your first draft might take some of the pressure off.
Another thing I find helps me with fear of failure is to accept that the first draft of anything I write will be crappy and focus on getting ideas down and revising later. I also found, at least as an undergrad English major, that it's easier to just write late at night. Something about being tired takes the edge off my self-criticism and gets the ideas flowing. I describe it as my internal editor going to sleep by ten o'clock. | Rejection can be hard to handle, but a good motivator is to look at people who's work was rejected initially widely, but ended up being immensely popular and profitable. Ghostbusters was rejected by three movie studios. Frank Herbert's manuscript for Dune was rejected by over 20 publishers. Lorenz's seminal paper on chaos was rejected several times if I remember correctly. |
268,076 | I would use 14/2 Romex coming from 15amp circuit breaker then pigtailed to 2 differnt Light switches. [](https://i.stack.imgur.com/74zA0.jpg) | 2023/03/02 | [
"https://diy.stackexchange.com/questions/268076",
"https://diy.stackexchange.com",
"https://diy.stackexchange.com/users/156070/"
] | Everything you are describing *could* be explained by a disconnected neutral that might be within your premises or outside. You should start by calling your power company and suggesting they come look for that specific problem. You could also call an electrician to look for it.
With this problem:
* Some devices will not work sometimes, or will work partially or poorly with fluctuating supply voltage when *other* devices are turned on. The connection between devices will appear random.
* Devices with metal housings (including the metal housings on HDMI cable ends and the ground shield on coax cables), where those housings should normally be at ground potential, may come up to various voltages. The effect gets worse if the building's grounding is poor or doesn't exist. | When you say the HDMI and Coax are hot (22 V - 60 V), I assume you're talking about the outer metal shell on those cables? If that's the case, it means that all your metal chassis/boxes are hot, which is bad.
Since those metal boxes/chassis should be connected, eventually, back to earth ground, that indicates there may be a problem back in your circuit breaker (or fuse) panel. Like maybe the neutral and earth ground have been reversed, or one of them is no longer connected.
Unless you have some experience in this area (these kinds of problems can be tricky to track down the root cause of), you need a good electrician. |
268,076 | I would use 14/2 Romex coming from 15amp circuit breaker then pigtailed to 2 differnt Light switches. [](https://i.stack.imgur.com/74zA0.jpg) | 2023/03/02 | [
"https://diy.stackexchange.com/questions/268076",
"https://diy.stackexchange.com",
"https://diy.stackexchange.com/users/156070/"
] | TLDR: Forget the networking stuff, that's only a symptom. Call the power company and report a power outage, tell them "Lost Neutral". When they ask, don't talk about other symptoms other than "my appliances keep frying". DO NOT tell them a story. They will tell you to call an electrician, which won't work, you tried it.
You have a lost neutral on your AC power! Get it fixed for free!
----------------------------------------------------------------
The reason everyone's missing it is that they're focusing on your networking and not your AC power supply. From here on out, forget the networking. Focus on your broken AC power.
In the USA, we get 2 hot wires and a neutral. The 2 hot wires are 240V apart. The neutral is in the middle *(or it's **supposed** to be)* giving us 120V, twice, in two "poles". When the neutral wire breaks, we still get 240V, but the poles are not 120V anymore. Neutral starts wandering all over the place. So it might be 100V/140V, 90V/150V, 60V/180V, it varies.
The insidious thing about Lost Neutral is that *usually, the voltage deviations aren't that bad*. So everything still works. It just becomes subtle gremlins.
>
> house lights and appliance started to act up - lights dimming ***or brightening*** when other lights or appliances in use
>
>
>
Yeah. "or brightening". That's what we're talking about.
Normally, this doesn't get too extreme, because neutral current has a couple of alternate paths. Each of yours had a problem, though!
First, at your house's main panel, neutral is bonded to ground which is wired to a Grounding Electrode System (GES, i.e. water pipe clamp or grounding rods) which ties *to the actual dirt*. So neutral current will try to go out your GES, *through the actual dirt*, to a neighbor or transformer's GES and then back to neutral. Dirt isn't a very good conductor (that's why we bother to mine copper), so it still allows a fair bit of wobble. Now you were mentioning
>
> electrician came out, discovered by ground was cut when I recently had whole house re-pipe with flex, fixed that, re-grounding the electrical
>
>
>
Right. You had a water pipe GES, which was broken when converted to plastic pipe - common problem but still negligent. The electrician fixed you up with a different type of GES, probably *ground rods* and advised you to "mumble mumble" lost in the noise.
The second path is cable TV, typically grounded at both ends for safety. Neutral current will try to seek through that. Of course it's not rated to return 20 or 30 amps of current, so this happens
>
> Internet & cable went out, called service repair, cable guys noticed the HDMI & COAX were hot (22-62v)
>
>
>
Varying, huh? That's typical of Lost Neutral.
>
> added new grounding(?) connector for cable COAX incoming to house, BUT HDMI still hot on every TV or connection, new or old wiring
>
>
>
Right. Because the cable guy gave up on you ever fixing your Lost Neutral problem, and simply *disconnected* your cable TV cable from ground on your house's end. You do not have their permission to use their cable jacket as a substitute for your AC power neutral.
You are saying "the cable TV wire is hot" - probably not. Probably, the cable TV wire is properly grounded. *Your house's grounds are hot* because of the Lost Neutral.
>
> checked all outlets, all 'correct' 120v reading
>
>
>
"Correct"? So you're using a dumb "pass/fail" tester that doesn't actually give you a voltage **number**. It just says "In the neighborhood of 120V" or "not". So it will read "correct" even if your house has a Lost Neutral. We need to get you a better tester. An excellent tester *for all sorts of things, way beyond voltage* - is the "Kill-A-Watt" home energy monitor. About $25 and Walmart stocks it. Just plug it into any outlet and it will readout the voltage. Now check several outlets and watch for that "high/low voltage" symptom. 100/140V etc.
What actually happened
----------------------
If you look at an electric line from the poletop to your house, you will see an aluminum carrier wire with 2 insulated wires wrapped around it. That stuff is [triplex](https://www.wireandcableyourway.com/1-0-1-0-1-0-nerlina-acsr-aluminum-triplex-overhead-service-drop-cable). The bare wire is the *physical carrier wire* that carries the weight of all the wires. Unfortunately, it's also neutral. It whips in the wind for 30 years, and aluminum has no fatigue limit. SNAP! This is often (but not always) seen by an obvious gap and the cable hanging by the 2 insulated wires. That's a hard failure, and it's more likely on the neutral than the hots. (unlike an underground installation where it's equal chance).
Get it fixed for free today
---------------------------
Anyway, 95% of the time, a Lost Neutral occurs in the zone that the power company is responsible for maintaining. That overhead line wire. You call them up and report an outage, they send an insulated boom truck and it's fixed in a jiffy once the lineworker spots it.
When I called to have ours fixed, on a Sunday, they were out in an hour. They identified a neighbor's lost "hot" and fixed that too. | When you say the HDMI and Coax are hot (22 V - 60 V), I assume you're talking about the outer metal shell on those cables? If that's the case, it means that all your metal chassis/boxes are hot, which is bad.
Since those metal boxes/chassis should be connected, eventually, back to earth ground, that indicates there may be a problem back in your circuit breaker (or fuse) panel. Like maybe the neutral and earth ground have been reversed, or one of them is no longer connected.
Unless you have some experience in this area (these kinds of problems can be tricky to track down the root cause of), you need a good electrician. |
268,076 | I would use 14/2 Romex coming from 15amp circuit breaker then pigtailed to 2 differnt Light switches. [](https://i.stack.imgur.com/74zA0.jpg) | 2023/03/02 | [
"https://diy.stackexchange.com/questions/268076",
"https://diy.stackexchange.com",
"https://diy.stackexchange.com/users/156070/"
] | Everything you are describing *could* be explained by a disconnected neutral that might be within your premises or outside. You should start by calling your power company and suggesting they come look for that specific problem. You could also call an electrician to look for it.
With this problem:
* Some devices will not work sometimes, or will work partially or poorly with fluctuating supply voltage when *other* devices are turned on. The connection between devices will appear random.
* Devices with metal housings (including the metal housings on HDMI cable ends and the ground shield on coax cables), where those housings should normally be at ground potential, may come up to various voltages. The effect gets worse if the building's grounding is poor or doesn't exist. | 1. Disconnect all items that have coax and/or HDMI from AC power/Wall AC adapters and from the wall's coax plate(s).
2. Now, measure the voltage from pin to shell on the closest-to-cable-provider/utility-plate. If it is not 0VDC and 0VAC, call your cable provider.
3. One-by-one start re-connecting your items to the coax/hdmi. Measure the voltages. If OK, re-connect their power source. Re-measure the voltages. If good, repeat this step for all of your items, one-by-one. I'm guessing that the culprit(s) can be quickly determined in this fashion. Given your 'lightning' incident, it could very easily be that all of your devices will have to be replaced. |
268,076 | I would use 14/2 Romex coming from 15amp circuit breaker then pigtailed to 2 differnt Light switches. [](https://i.stack.imgur.com/74zA0.jpg) | 2023/03/02 | [
"https://diy.stackexchange.com/questions/268076",
"https://diy.stackexchange.com",
"https://diy.stackexchange.com/users/156070/"
] | TLDR: Forget the networking stuff, that's only a symptom. Call the power company and report a power outage, tell them "Lost Neutral". When they ask, don't talk about other symptoms other than "my appliances keep frying". DO NOT tell them a story. They will tell you to call an electrician, which won't work, you tried it.
You have a lost neutral on your AC power! Get it fixed for free!
----------------------------------------------------------------
The reason everyone's missing it is that they're focusing on your networking and not your AC power supply. From here on out, forget the networking. Focus on your broken AC power.
In the USA, we get 2 hot wires and a neutral. The 2 hot wires are 240V apart. The neutral is in the middle *(or it's **supposed** to be)* giving us 120V, twice, in two "poles". When the neutral wire breaks, we still get 240V, but the poles are not 120V anymore. Neutral starts wandering all over the place. So it might be 100V/140V, 90V/150V, 60V/180V, it varies.
The insidious thing about Lost Neutral is that *usually, the voltage deviations aren't that bad*. So everything still works. It just becomes subtle gremlins.
>
> house lights and appliance started to act up - lights dimming ***or brightening*** when other lights or appliances in use
>
>
>
Yeah. "or brightening". That's what we're talking about.
Normally, this doesn't get too extreme, because neutral current has a couple of alternate paths. Each of yours had a problem, though!
First, at your house's main panel, neutral is bonded to ground which is wired to a Grounding Electrode System (GES, i.e. water pipe clamp or grounding rods) which ties *to the actual dirt*. So neutral current will try to go out your GES, *through the actual dirt*, to a neighbor or transformer's GES and then back to neutral. Dirt isn't a very good conductor (that's why we bother to mine copper), so it still allows a fair bit of wobble. Now you were mentioning
>
> electrician came out, discovered by ground was cut when I recently had whole house re-pipe with flex, fixed that, re-grounding the electrical
>
>
>
Right. You had a water pipe GES, which was broken when converted to plastic pipe - common problem but still negligent. The electrician fixed you up with a different type of GES, probably *ground rods* and advised you to "mumble mumble" lost in the noise.
The second path is cable TV, typically grounded at both ends for safety. Neutral current will try to seek through that. Of course it's not rated to return 20 or 30 amps of current, so this happens
>
> Internet & cable went out, called service repair, cable guys noticed the HDMI & COAX were hot (22-62v)
>
>
>
Varying, huh? That's typical of Lost Neutral.
>
> added new grounding(?) connector for cable COAX incoming to house, BUT HDMI still hot on every TV or connection, new or old wiring
>
>
>
Right. Because the cable guy gave up on you ever fixing your Lost Neutral problem, and simply *disconnected* your cable TV cable from ground on your house's end. You do not have their permission to use their cable jacket as a substitute for your AC power neutral.
You are saying "the cable TV wire is hot" - probably not. Probably, the cable TV wire is properly grounded. *Your house's grounds are hot* because of the Lost Neutral.
>
> checked all outlets, all 'correct' 120v reading
>
>
>
"Correct"? So you're using a dumb "pass/fail" tester that doesn't actually give you a voltage **number**. It just says "In the neighborhood of 120V" or "not". So it will read "correct" even if your house has a Lost Neutral. We need to get you a better tester. An excellent tester *for all sorts of things, way beyond voltage* - is the "Kill-A-Watt" home energy monitor. About $25 and Walmart stocks it. Just plug it into any outlet and it will readout the voltage. Now check several outlets and watch for that "high/low voltage" symptom. 100/140V etc.
What actually happened
----------------------
If you look at an electric line from the poletop to your house, you will see an aluminum carrier wire with 2 insulated wires wrapped around it. That stuff is [triplex](https://www.wireandcableyourway.com/1-0-1-0-1-0-nerlina-acsr-aluminum-triplex-overhead-service-drop-cable). The bare wire is the *physical carrier wire* that carries the weight of all the wires. Unfortunately, it's also neutral. It whips in the wind for 30 years, and aluminum has no fatigue limit. SNAP! This is often (but not always) seen by an obvious gap and the cable hanging by the 2 insulated wires. That's a hard failure, and it's more likely on the neutral than the hots. (unlike an underground installation where it's equal chance).
Get it fixed for free today
---------------------------
Anyway, 95% of the time, a Lost Neutral occurs in the zone that the power company is responsible for maintaining. That overhead line wire. You call them up and report an outage, they send an insulated boom truck and it's fixed in a jiffy once the lineworker spots it.
When I called to have ours fixed, on a Sunday, they were out in an hour. They identified a neighbor's lost "hot" and fixed that too. | Everything you are describing *could* be explained by a disconnected neutral that might be within your premises or outside. You should start by calling your power company and suggesting they come look for that specific problem. You could also call an electrician to look for it.
With this problem:
* Some devices will not work sometimes, or will work partially or poorly with fluctuating supply voltage when *other* devices are turned on. The connection between devices will appear random.
* Devices with metal housings (including the metal housings on HDMI cable ends and the ground shield on coax cables), where those housings should normally be at ground potential, may come up to various voltages. The effect gets worse if the building's grounding is poor or doesn't exist. |
268,076 | I would use 14/2 Romex coming from 15amp circuit breaker then pigtailed to 2 differnt Light switches. [](https://i.stack.imgur.com/74zA0.jpg) | 2023/03/02 | [
"https://diy.stackexchange.com/questions/268076",
"https://diy.stackexchange.com",
"https://diy.stackexchange.com/users/156070/"
] | TLDR: Forget the networking stuff, that's only a symptom. Call the power company and report a power outage, tell them "Lost Neutral". When they ask, don't talk about other symptoms other than "my appliances keep frying". DO NOT tell them a story. They will tell you to call an electrician, which won't work, you tried it.
You have a lost neutral on your AC power! Get it fixed for free!
----------------------------------------------------------------
The reason everyone's missing it is that they're focusing on your networking and not your AC power supply. From here on out, forget the networking. Focus on your broken AC power.
In the USA, we get 2 hot wires and a neutral. The 2 hot wires are 240V apart. The neutral is in the middle *(or it's **supposed** to be)* giving us 120V, twice, in two "poles". When the neutral wire breaks, we still get 240V, but the poles are not 120V anymore. Neutral starts wandering all over the place. So it might be 100V/140V, 90V/150V, 60V/180V, it varies.
The insidious thing about Lost Neutral is that *usually, the voltage deviations aren't that bad*. So everything still works. It just becomes subtle gremlins.
>
> house lights and appliance started to act up - lights dimming ***or brightening*** when other lights or appliances in use
>
>
>
Yeah. "or brightening". That's what we're talking about.
Normally, this doesn't get too extreme, because neutral current has a couple of alternate paths. Each of yours had a problem, though!
First, at your house's main panel, neutral is bonded to ground which is wired to a Grounding Electrode System (GES, i.e. water pipe clamp or grounding rods) which ties *to the actual dirt*. So neutral current will try to go out your GES, *through the actual dirt*, to a neighbor or transformer's GES and then back to neutral. Dirt isn't a very good conductor (that's why we bother to mine copper), so it still allows a fair bit of wobble. Now you were mentioning
>
> electrician came out, discovered by ground was cut when I recently had whole house re-pipe with flex, fixed that, re-grounding the electrical
>
>
>
Right. You had a water pipe GES, which was broken when converted to plastic pipe - common problem but still negligent. The electrician fixed you up with a different type of GES, probably *ground rods* and advised you to "mumble mumble" lost in the noise.
The second path is cable TV, typically grounded at both ends for safety. Neutral current will try to seek through that. Of course it's not rated to return 20 or 30 amps of current, so this happens
>
> Internet & cable went out, called service repair, cable guys noticed the HDMI & COAX were hot (22-62v)
>
>
>
Varying, huh? That's typical of Lost Neutral.
>
> added new grounding(?) connector for cable COAX incoming to house, BUT HDMI still hot on every TV or connection, new or old wiring
>
>
>
Right. Because the cable guy gave up on you ever fixing your Lost Neutral problem, and simply *disconnected* your cable TV cable from ground on your house's end. You do not have their permission to use their cable jacket as a substitute for your AC power neutral.
You are saying "the cable TV wire is hot" - probably not. Probably, the cable TV wire is properly grounded. *Your house's grounds are hot* because of the Lost Neutral.
>
> checked all outlets, all 'correct' 120v reading
>
>
>
"Correct"? So you're using a dumb "pass/fail" tester that doesn't actually give you a voltage **number**. It just says "In the neighborhood of 120V" or "not". So it will read "correct" even if your house has a Lost Neutral. We need to get you a better tester. An excellent tester *for all sorts of things, way beyond voltage* - is the "Kill-A-Watt" home energy monitor. About $25 and Walmart stocks it. Just plug it into any outlet and it will readout the voltage. Now check several outlets and watch for that "high/low voltage" symptom. 100/140V etc.
What actually happened
----------------------
If you look at an electric line from the poletop to your house, you will see an aluminum carrier wire with 2 insulated wires wrapped around it. That stuff is [triplex](https://www.wireandcableyourway.com/1-0-1-0-1-0-nerlina-acsr-aluminum-triplex-overhead-service-drop-cable). The bare wire is the *physical carrier wire* that carries the weight of all the wires. Unfortunately, it's also neutral. It whips in the wind for 30 years, and aluminum has no fatigue limit. SNAP! This is often (but not always) seen by an obvious gap and the cable hanging by the 2 insulated wires. That's a hard failure, and it's more likely on the neutral than the hots. (unlike an underground installation where it's equal chance).
Get it fixed for free today
---------------------------
Anyway, 95% of the time, a Lost Neutral occurs in the zone that the power company is responsible for maintaining. That overhead line wire. You call them up and report an outage, they send an insulated boom truck and it's fixed in a jiffy once the lineworker spots it.
When I called to have ours fixed, on a Sunday, they were out in an hour. They identified a neighbor's lost "hot" and fixed that too. | 1. Disconnect all items that have coax and/or HDMI from AC power/Wall AC adapters and from the wall's coax plate(s).
2. Now, measure the voltage from pin to shell on the closest-to-cable-provider/utility-plate. If it is not 0VDC and 0VAC, call your cable provider.
3. One-by-one start re-connecting your items to the coax/hdmi. Measure the voltages. If OK, re-connect their power source. Re-measure the voltages. If good, repeat this step for all of your items, one-by-one. I'm guessing that the culprit(s) can be quickly determined in this fashion. Given your 'lightning' incident, it could very easily be that all of your devices will have to be replaced. |
171,902 | First my question:
>
> How much category theory should someone studying algebraic topology generally know?
>
>
>
**Motivation**: I am taking my first graduate course in algebraic topology next semester, and, up to this point, I have never taken the time to learn any category theory. I've read that category theory helps one to understand the underlying structure of the subject and that it was developed by those studying algebraic topology. Since I do not know the exact content which will be covered in this course, I am trying to find out what amount of category theory someone studying algebraic topology should generally know.
My university has a very general outline for what the course could include, so, to narrow the question a bit, I will give the list of possible topics for the course.
Possible Topics:
* unstable homotopy theory
* spectra
* bordism theory
* cohomology of groups
* localization
* rational homotopy theory
* differential topology
* spectral sequences
* K-theory
* model categories
All in all, I am well overdue to learn the language of categories, so this question is really about how much category theory one needs in day to day life in the field.
**Update**
I emailed the professor teaching the course and he said he hopes to cover the following (though maybe it is too much):
* homotopy, homotopy equivalences, mapping cones, mapping cylinders
* fibrations and cofibrations, and homotopy groups, and long exact homotopy sequences.
* classifing spaces of groups.
* Freudenthal theorem, the Hurewicz and the Whitehead theorem.
* Eilenberg-MacLane spaces and Postnikov towers.
* homology and cohomology theories defined by spectra. | 2012/07/17 | [
"https://math.stackexchange.com/questions/171902",
"https://math.stackexchange.com",
"https://math.stackexchange.com/users/22437/"
] | The list of possible topics that you provide vary in their categorical demands from the relatively light (e.g. differential topology) to the rather heavy (e.g. spectra, model categories). So a better answer might be possible if you know more about the focus of the course.
My personal bias about category theory and topology, however, is that you should mostly just learn what you need along the way. The language of categories and homological algebra was largely invented by topologists and geometers who had a specific need in mind, and in my opinion it is most illuminating to learn an abstraction at the same time as the things to be abstracted. For example, the axioms which define a model category would probably look like complete nonsense if you try to just stare at them, but they seem natural and meaningful when you consider the model structure on the category of, say, simplicial sets in topology.
So if you're thinking about just buying a book on categories and spending a month reading it, I think your time could be better spent in other ways. It would be a little bit like buying a book on set theory before taking a course on real analysis - the language of sets is certainly important and relevant, but you can probably pick it up as you go. Many topology books are written with a similar attitude toward categories.
All that said, if you have a particular reason to worry about this (for instance if you're worried about the person teaching the course) or if you're the sort of person who enjoys pushing around diagrams for its own sake (some people do) then here are a few suggestions. Category theory often enters into topology as a way to organize all of the homological algebra involved, so it might not hurt to brush up on that. Perhaps you've already been exposed to the language of exact sequences and chain complexes; if not then that would be a good place to start (though it will be very dry without any motivation). Group cohomology is an important subject in its own right, and it might help you learn some more of the language in a reasonably familiar setting. Alternatively, you might pick a specific result or tool in category theory - like the adjoint functor theorem or the Yoneda lemma - and try to understand the proof and some applications. | The bottlenecks seem to be K-theory and Model categories. I can't think of any categorial tools you need for any of the other topics that aren't a proper subset of those used in these two.
Then it depends, like everything in mathematics, on how deep you want to go.
My advice would be to take a book on those topics and just try to read it. You will see right ahead what categorial language you need. Most topology books specifically highlight any categorial reasoning and many even include a appendix on category theory. |
171,902 | First my question:
>
> How much category theory should someone studying algebraic topology generally know?
>
>
>
**Motivation**: I am taking my first graduate course in algebraic topology next semester, and, up to this point, I have never taken the time to learn any category theory. I've read that category theory helps one to understand the underlying structure of the subject and that it was developed by those studying algebraic topology. Since I do not know the exact content which will be covered in this course, I am trying to find out what amount of category theory someone studying algebraic topology should generally know.
My university has a very general outline for what the course could include, so, to narrow the question a bit, I will give the list of possible topics for the course.
Possible Topics:
* unstable homotopy theory
* spectra
* bordism theory
* cohomology of groups
* localization
* rational homotopy theory
* differential topology
* spectral sequences
* K-theory
* model categories
All in all, I am well overdue to learn the language of categories, so this question is really about how much category theory one needs in day to day life in the field.
**Update**
I emailed the professor teaching the course and he said he hopes to cover the following (though maybe it is too much):
* homotopy, homotopy equivalences, mapping cones, mapping cylinders
* fibrations and cofibrations, and homotopy groups, and long exact homotopy sequences.
* classifing spaces of groups.
* Freudenthal theorem, the Hurewicz and the Whitehead theorem.
* Eilenberg-MacLane spaces and Postnikov towers.
* homology and cohomology theories defined by spectra. | 2012/07/17 | [
"https://math.stackexchange.com/questions/171902",
"https://math.stackexchange.com",
"https://math.stackexchange.com/users/22437/"
] | The list of possible topics that you provide vary in their categorical demands from the relatively light (e.g. differential topology) to the rather heavy (e.g. spectra, model categories). So a better answer might be possible if you know more about the focus of the course.
My personal bias about category theory and topology, however, is that you should mostly just learn what you need along the way. The language of categories and homological algebra was largely invented by topologists and geometers who had a specific need in mind, and in my opinion it is most illuminating to learn an abstraction at the same time as the things to be abstracted. For example, the axioms which define a model category would probably look like complete nonsense if you try to just stare at them, but they seem natural and meaningful when you consider the model structure on the category of, say, simplicial sets in topology.
So if you're thinking about just buying a book on categories and spending a month reading it, I think your time could be better spent in other ways. It would be a little bit like buying a book on set theory before taking a course on real analysis - the language of sets is certainly important and relevant, but you can probably pick it up as you go. Many topology books are written with a similar attitude toward categories.
All that said, if you have a particular reason to worry about this (for instance if you're worried about the person teaching the course) or if you're the sort of person who enjoys pushing around diagrams for its own sake (some people do) then here are a few suggestions. Category theory often enters into topology as a way to organize all of the homological algebra involved, so it might not hurt to brush up on that. Perhaps you've already been exposed to the language of exact sequences and chain complexes; if not then that would be a good place to start (though it will be very dry without any motivation). Group cohomology is an important subject in its own right, and it might help you learn some more of the language in a reasonably familiar setting. Alternatively, you might pick a specific result or tool in category theory - like the adjoint functor theorem or the Yoneda lemma - and try to understand the proof and some applications. | I agree with Paul Siegel's very nice answer, and would just like to add one thing that's a little too long for a comment.
Depending on what direction you take, algebraic topology can become practically synonymous with higher category theory. This can come in multiple ways. First, the category of topological spaces has spaces as its objects, continuous maps as its morphisms, homotopies as its 2-morphisms, homotopies between homotopies as its 3-morphisms, etc. Stated perhaps a little too cavalierly, the point of model categories is essentially to set up a general framework for studying higher categories that may (or may not) look like that of spaces. But then, higher categories themselves are also a lot like spaces. In this analogy, functors are like continuous maps, natural transformations are like homotopies, etc. (The fact that there are these two totally distinct ways that spaces and categories interact really blindsided me the first time I saw it.)
Anyways, the point is that if you pursue algebraic topology seriously, you may eventually have to get very friendly with category theory and be okay with using ridiculous and scary phrases like "homotopy left Kan extension" and such. It seems that usage of higher category theory in algebraic topology is very much on the rise, so it's possible that in twenty years, algebraic topologists will have no choice but to become well-versed in all this stuff. (I'm certainly not. Not yet, at least.) Just a heads-up. |
26,765,026 | When exploring Azure storage I've noticed that access to a storage container is done through a shared key. There is concern where I work that if a developer is using this key for an application they're building and then leave the company that they could still login to the storage account and delete anything they want. The workaround for this would be to re-generate the secondary key for the account but then we'd have to change all of the keys in every application that uses those keys.
Is it best practice to have an entire storage account per application per environment (dev, test, staging, production)?
Is it possible to secure the storage account behind a virtual network?
Should we use signatures on our containers on a per application basis?
Anybody have experiences similar and have found a good pattern for dealing with this? | 2014/11/05 | [
"https://Stackoverflow.com/questions/26765026",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/386739/"
] | I have a bit different scenario – external applications, but the problem is the same - data access security
I use Shared Access Signatures(SAS) to grant an access to a container.
In your scenario you can create Shared Access Policy per application on a container and generate SAS using this Stored Access Policy with long expiration time, you can revoke it at any point by removing Shared Access Policy from container. So in you scenario you can revoke current SAS and generate new one when your developer leaves. You can't generate single SAS for multiple containers so if you application uses multiple containers you would have to generate multiple SAS.
Usage, from the developers perspective, stays the same:
You can use SAS token to create [CloudStorageAccount](http://msdn.microsoft.com/en-us/library/azure/jj682732.aspx) or [CloudBlobClient](http://msdn.microsoft.com/en-us/library/gg435983(v=azure.95).aspx) so it’s almost like a regular access key.
Longer term, I would probably think about creating one internal service(internal API) responsible for generating SAS and renewing them. This way you can have completely automated system and with access keys only disclosed to this main service. You can then restrict access to this service with virtual network, certificates, authentication etc. And if something goes wrong (developer who wrote that service leaves :-) ) you can regenerate access keys and change them, but this time only in one place.
Few things:
* Storage account per application (and/or environment) is a good strategy, but you have to be aware of the limit – max 100 storage accounts per subscription.
* There is no option to limit access to a storage account with virtual network
* You can have maximum 5 Shared Access Policies on a single container | I won't get into subjective / opinion answers, but from an objective perspective: If a developer has a storage account key, then they have full access to the storage account. And if they left the company and kept a copy of the key? The only way to block them out is to regenerate the key.
You might assume that separating apps with different storage accounts helps. However, just keep this in mind:if a developer had access to a subscription, they had access to keys for every single storage account in that subscription.
When thinking of key regeneration, think about the total surface area of apps having knowledge of the key itself. If storage manipulation is solely a server-side operation, the impact of changing a key is minimal (a small app change in each deployment, along with updating any storage browsing tools you use). If you embedded the key in a desktop/mobile application for direct storage access, you have a bigger problem with having to push out updated clients, but you already have a security problem anyway. |
42,915 | I run a business that involves me managing client profiles and regularly performing actions associated with their accounts (i.e. taking care of forms, taxes, communications from different parties associated with the account).
I thought Smartsheets would be ideal because it's so easy and clean to manage data with it. However I soon discovered that managing workflow and determining where things were up to, what was in progress, what needed to be done etc was a mess.
Then I tried Trello. Trello was incredible when it came to workflow and project management. "Cards" would easily moved and classified. At one glance, I or my partners could see what was where and what was due when. However, I soon saw the difficulty of keeping client info in the "card" descriptions as opposed to lists, and the pain it was to manually enter data instead of populating them from web forms.
I am looking for an online database that essentially combines the power of Smartsheet and Trello in that it has a really clean intuitive project management space backed up by a coherent spreadsheet based database.
Until Trello and Smartsheets merge, I need another option. | 2013/04/11 | [
"https://webapps.stackexchange.com/questions/42915",
"https://webapps.stackexchange.com",
"https://webapps.stackexchange.com/users/38080/"
] | [This](http://meta.wikimedia.org/wiki/User%3aDuesentrieb/POTD) might do what you want. It calls various-sized images from Wikimedia sites using a stable URL. They might not be the prettiest sometimes, but could be worth a try. | In Gmail's settings under 'Themes', you can pick the theme 'Random', which will apply a random theme **daily**.
See [this blog post](http://googlesystem.blogspot.be/2009/09/random-gmail-theme.html) on Google System from 2009.
I don't think it's possibly to shuffle only the background image. |
42,915 | I run a business that involves me managing client profiles and regularly performing actions associated with their accounts (i.e. taking care of forms, taxes, communications from different parties associated with the account).
I thought Smartsheets would be ideal because it's so easy and clean to manage data with it. However I soon discovered that managing workflow and determining where things were up to, what was in progress, what needed to be done etc was a mess.
Then I tried Trello. Trello was incredible when it came to workflow and project management. "Cards" would easily moved and classified. At one glance, I or my partners could see what was where and what was due when. However, I soon saw the difficulty of keeping client info in the "card" descriptions as opposed to lists, and the pain it was to manually enter data instead of populating them from web forms.
I am looking for an online database that essentially combines the power of Smartsheet and Trello in that it has a really clean intuitive project management space backed up by a coherent spreadsheet based database.
Until Trello and Smartsheets merge, I need another option. | 2013/04/11 | [
"https://webapps.stackexchange.com/questions/42915",
"https://webapps.stackexchange.com",
"https://webapps.stackexchange.com/users/38080/"
] | Following on from Andrew Lott's answer, I've found the following URL works really well:
<http://tools.wikimedia.de/~daniel/potd/potd.php/commons/1600x1200>
Note that changing the dimensions at the end of the URL resizes the image - so the above returns a picture 1600px wide by 1200px high. Set it to your monitor's pixel width & height for best results. | In Gmail's settings under 'Themes', you can pick the theme 'Random', which will apply a random theme **daily**.
See [this blog post](http://googlesystem.blogspot.be/2009/09/random-gmail-theme.html) on Google System from 2009.
I don't think it's possibly to shuffle only the background image. |
36,358 | Let's say for example I put my public bitcoin address on a website for donations and multiple people for around the world deposit bitcoins simultaneously to that same wallet:
1. Will all deposit transactions be valid on the bitcoin network or might some transactions "overwrite" the other?
2. While receiving bitcoins from someone (not yet a verified transaction on the network), can I withdraw or pay bitcoins using the same wallet given the amount only include previous bitcoins and does include the new deposit? | 2015/03/07 | [
"https://bitcoin.stackexchange.com/questions/36358",
"https://bitcoin.stackexchange.com",
"https://bitcoin.stackexchange.com/users/18473/"
] | One big reason against this sort of thing is that it creates a huge incentive for bad people to try to prevent you to do transactions (censor you).
1. If miners get the "lost" bitcoins they might simply refuse transactions with coins that are almost expired hoping to get a bigger reward later.
2. If miners don't get them but they are truly lost forever, then there is an incentive for big stakeholders to try to do the same thing: less coins means the value of everyone else's coins goes up.
3. It gives governments and other mafia huge power: don't want to comply? We'll just lock you up for 2 years and make your coins expire. Or more "humanely" use other censorship tricks (hacking/digital censoring) to prevent you from spending your coins before they expire.
Another reason is that people will en mass set up automated scripts to move all their coins regularly, which is a big security (and privacy) risk. It's much easier to keep private keys safe (on a piece of paper in a vault) than it is to keep an internet connected system powered up and safe 24/7. | >
> Recycle lost/destroyed bitcoins by giving them back to miners
>
>
> Miners will continue to get more transactions and thus more fees
>
>
>
If you already own bitcoin, this isn't a good thing as it increases the supply. That said, there is an altcoin called [Freicoin](http://freico.in/) that uses demurrage rather than an abrupt 2-year expiration that's got some of the property you're looking for.
>
> Number of unspend transactions may become less speeding up verification
>
>
> Size of blockchain to keep downloaded can be minimized
>
>
>
This may or may not be true as expiring coins gives people incentive to transfer them in order to not lose them. I would guess that given this fairly major economic incentive, the number of unspent transactions wouldn't actually go down that much.
>
> Broken cryptographic hahes/signatures can be made obsolute
>
>
> New features can be easily introduced
>
>
>
You seem to be of the opinion that what's keeping bitcoin from innovating is that there's all these obsolete transactions. That's simply not true. What's keeping bitcoin from innovating is the possibility of a hard fork. New features like lifting the 1MB block limit has nothing to do with old transactions being in the blockchain. It has everything to do with miners achieving concensus. |
570,035 | I've read several of the migration guides for moving an existing windows install from a HDD to a SSD.
Steps are basically:
1. Attach external drive
2. copy hdd image to drive (conezilla)
3. install ssd
4. boot to clonezilla
5. copy image from external drive to ssd
6. boot from new ssd
My question is, can it be done like this:
1. attach ssd in an external harddrive enclosure
2. boot to clonezilla
3. copy image from current hdd to ssd (via enclosure)
4. install ssd
5. boot from ssd
Thereby saving an entire image copy? | 2013/03/22 | [
"https://superuser.com/questions/570035",
"https://superuser.com",
"https://superuser.com/users/117236/"
] | Yes you can clone directly to a SSD and boot from that drive. I've done that a number of times and never created an intermediate image. The only issue sometimes can be partition size difference but programs like Clonzilla should be able to handle that as an option. | You can do it, but it will still take hours upon hours to complete. You might as well just do a fresh install. |
390,099 | I am looking at uClinux system that builds the kernel with arm-linux-xxx, but builds the user apps with arm-elf-xxx.
If the apps are intended to run on linux, wouldn't it be better to build everything with arm-linux-xxx ?
Where does one set that option in the overall uClinux build config? | 2008/12/23 | [
"https://Stackoverflow.com/questions/390099",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/2033811/"
] | The names of the compilers don't necessarily mean anything. Depending on who built the compilers (and named them), you'll get differing results. Arguably, there is a correct name for a particular configuration, but some random compiled gcc may not be correct.
For the CodeSourcery compilers (likely the most correct names), see [their platforms page](http://www.codesourcery.com/sgpp/platforms.html) for what their naming means. | ELF is the binary format [linux and many others](http://en.wikipedia.org/wiki/Executable_and_Linkable_Format) use:
>
> The ELF format has replaced older
> executable formats such as a.out and
> COFF in many Unix-like operating
> systems such as Linux, Solaris, IRIX,
> FreeBSD, NetBSD, OpenBSD, DragonFly
> BSD, Syllable, and HP-UX (except for
> 32-bit PA-RISC programs which continue
> to use SOM). ELF has also seen some
> adoption in non-Unix operating
> systems, such as the Itanium version
> of OpenVMS, and BeOS Revision 4 and
> later for x86 based computers (where
> it replaced the Portable Executable
> format; the PowerPC version stayed
> with Preferred Executable Format). The
> PlayStation Portable, PlayStation 2,
> PlayStation 3, Wii and GP2X consoles
> also use ELF. AmigaOS 4 and MorphOS
> also running on PowerPC machines, use
> ELF. On the Amiga platform the ELF
> executable has replaced the previous
> EHF (Extended Hunk Format) which was
> used on Amigas equipped with PPC
> processor expansion cards. The Symbian
> OS v9 uses E32Image[3] format that is
> based on ELF file format.
>
>
> Most Sony Ericsson (for example, the
> W800i, W610, K790, etc.), some Siemens
> (SGOLD and SGOLD2 platforms: from
> Siemens C65 to S75 and BenQ-Siemens
> E71/EL71) and Motorola (for example,
> the E398, SLVR L7, v360, v3i and all
> phone LTE2 which has the patch apply)
> phones can run ELF files through the
> use of a patch that adds assembly code
> to the main firmware (Known as the
> ELFPack, in the underground modding
> culture).
>
>
> |
390,099 | I am looking at uClinux system that builds the kernel with arm-linux-xxx, but builds the user apps with arm-elf-xxx.
If the apps are intended to run on linux, wouldn't it be better to build everything with arm-linux-xxx ?
Where does one set that option in the overall uClinux build config? | 2008/12/23 | [
"https://Stackoverflow.com/questions/390099",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/2033811/"
] | The names of the compilers don't necessarily mean anything. Depending on who built the compilers (and named them), you'll get differing results. Arguably, there is a correct name for a particular configuration, but some random compiled gcc may not be correct.
For the CodeSourcery compilers (likely the most correct names), see [their platforms page](http://www.codesourcery.com/sgpp/platforms.html) for what their naming means. | I seem to remember at some point that that bit in the middle didnt matter. As already mentioned elf is the standard file format, you want to use that anyway and will get that anyway independent of the binary name. What may (or not) matter more is the calling convention, I dont know if when calling a shared library function you have to get your calling convention to match or if it is handled for you somewhere else. |
390,099 | I am looking at uClinux system that builds the kernel with arm-linux-xxx, but builds the user apps with arm-elf-xxx.
If the apps are intended to run on linux, wouldn't it be better to build everything with arm-linux-xxx ?
Where does one set that option in the overall uClinux build config? | 2008/12/23 | [
"https://Stackoverflow.com/questions/390099",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/2033811/"
] | The names of the compilers don't necessarily mean anything. Depending on who built the compilers (and named them), you'll get differing results. Arguably, there is a correct name for a particular configuration, but some random compiled gcc may not be correct.
For the CodeSourcery compilers (likely the most correct names), see [their platforms page](http://www.codesourcery.com/sgpp/platforms.html) for what their naming means. | The difference is that the linked output from the arm-elf-xxx toolchain is a linux loadable binary, while arm-linux-xxx outputs a kernel object (ko), which is a blob with its own linkage format (for modules), or the main kernel itself, which doesn't need a packaging format. I.e., for user space you want the final dynamically linked object to be an ELF executable, library, or shared object. For kernel space, you want the final object (kernel or module) to be in the linux-arm-kernel linkage format.
You'll notice that the intermediate objects (.o files) of both targets are probably all ELF, since that is what the toolchain is expecting. |
390,099 | I am looking at uClinux system that builds the kernel with arm-linux-xxx, but builds the user apps with arm-elf-xxx.
If the apps are intended to run on linux, wouldn't it be better to build everything with arm-linux-xxx ?
Where does one set that option in the overall uClinux build config? | 2008/12/23 | [
"https://Stackoverflow.com/questions/390099",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/2033811/"
] | The names of the compilers don't necessarily mean anything. Depending on who built the compilers (and named them), you'll get differing results. Arguably, there is a correct name for a particular configuration, but some random compiled gcc may not be correct.
For the CodeSourcery compilers (likely the most correct names), see [their platforms page](http://www.codesourcery.com/sgpp/platforms.html) for what their naming means. | In our case we build linux using sparc-elf-gcc and we build busybox(appliation run on linux) using sparc-..-linux-gcc. and I think this is correct, not the other way around. |
55,913 | >
> **Possible Duplicate:**
>
> [Which day does “next Tuesday” refer to?](https://english.stackexchange.com/questions/3841/which-day-does-next-tuesday-refer-to)
>
>
>
I got a fortune cookie with the message *you will have lots of fun next weekend* on a Wednesday. Which weekend does this refer to? Is it the one in three days or the one after that? | 2012/01/25 | [
"https://english.stackexchange.com/questions/55913",
"https://english.stackexchange.com",
"https://english.stackexchange.com/users/9625/"
] | This is a good question and an eternal ambiguity, at least in American English. We commonly use *next weekend* to refer to the weekend that is absolutely closest to us in the future only when we are close enough to the previous weekend that *this weekend* could refer to the weekend just past.
For example, if it's Monday or even Tuesday, *this weekend* could mean the weekend we just had. For example:
>
> Q. What did you do this weekend?
>
> A. We went skiing.
>
>
>
And *next weekend* then refers to the coming weekend:
>
> Q. So are you going to go again next weekend?
>
> A. I'm not sure.
>
>
>
If it's Thursday or later, *this weekend* more likely refers to the coming weekend.
>
> Q. Do you want to go skiing this weekend?
>
> A. I have a party this weekend. But I'm free next weekend.
>
>
>
But if you're on the cusp (Wednesday, give or take a day), you would probably have to make clear which weekend you really did mean.
>
> Q. Do you want to go skiing next weekend?
>
> A. You mean this coming weekend or the one after?
>
>
>
Note that *this coming weekend* invariably refers to the weekend closest to the present date. | There is no consensus on whether "Next weekend" means the coming weekend, or the weekend following that. It varies from speaker to speaker, and also depends on what day it is when it's said -- the meaning is clear when spoken on a Saturday (it means the weekend following the current one), and becomes less clear through the week.
When it's important, you should clarify if you're the speaker, or ask for clarification if you're the listener.
The message on the fortune cookie is not true (except, perhaps, by coincidence), so it doesn't matter what it means :) |
55,913 | >
> **Possible Duplicate:**
>
> [Which day does “next Tuesday” refer to?](https://english.stackexchange.com/questions/3841/which-day-does-next-tuesday-refer-to)
>
>
>
I got a fortune cookie with the message *you will have lots of fun next weekend* on a Wednesday. Which weekend does this refer to? Is it the one in three days or the one after that? | 2012/01/25 | [
"https://english.stackexchange.com/questions/55913",
"https://english.stackexchange.com",
"https://english.stackexchange.com/users/9625/"
] | There is no consensus on whether "Next weekend" means the coming weekend, or the weekend following that. It varies from speaker to speaker, and also depends on what day it is when it's said -- the meaning is clear when spoken on a Saturday (it means the weekend following the current one), and becomes less clear through the week.
When it's important, you should clarify if you're the speaker, or ask for clarification if you're the listener.
The message on the fortune cookie is not true (except, perhaps, by coincidence), so it doesn't matter what it means :) | Looking at the "verb tense" of the sentence should be enough. The only thing I can say "this" may have a "limited scope" in time span where "last" and "next" come into usage. Consider:
>
> I watched TV this/last weekend
>
>
> I will watch TV this/next weekend
>
>
> |
55,913 | >
> **Possible Duplicate:**
>
> [Which day does “next Tuesday” refer to?](https://english.stackexchange.com/questions/3841/which-day-does-next-tuesday-refer-to)
>
>
>
I got a fortune cookie with the message *you will have lots of fun next weekend* on a Wednesday. Which weekend does this refer to? Is it the one in three days or the one after that? | 2012/01/25 | [
"https://english.stackexchange.com/questions/55913",
"https://english.stackexchange.com",
"https://english.stackexchange.com/users/9625/"
] | This is a good question and an eternal ambiguity, at least in American English. We commonly use *next weekend* to refer to the weekend that is absolutely closest to us in the future only when we are close enough to the previous weekend that *this weekend* could refer to the weekend just past.
For example, if it's Monday or even Tuesday, *this weekend* could mean the weekend we just had. For example:
>
> Q. What did you do this weekend?
>
> A. We went skiing.
>
>
>
And *next weekend* then refers to the coming weekend:
>
> Q. So are you going to go again next weekend?
>
> A. I'm not sure.
>
>
>
If it's Thursday or later, *this weekend* more likely refers to the coming weekend.
>
> Q. Do you want to go skiing this weekend?
>
> A. I have a party this weekend. But I'm free next weekend.
>
>
>
But if you're on the cusp (Wednesday, give or take a day), you would probably have to make clear which weekend you really did mean.
>
> Q. Do you want to go skiing next weekend?
>
> A. You mean this coming weekend or the one after?
>
>
>
Note that *this coming weekend* invariably refers to the weekend closest to the present date. | Looking at the "verb tense" of the sentence should be enough. The only thing I can say "this" may have a "limited scope" in time span where "last" and "next" come into usage. Consider:
>
> I watched TV this/last weekend
>
>
> I will watch TV this/next weekend
>
>
> |
77,004 | Hello personal finance,
I was filing my taxes for 2016 and I just found out that I transitioned from Non-Resident-Alien to Resident Alien around September last year by passing **substantial presence test**. After doing some research, I have found out that I qualify as a resident alien for the **whole tax year** (from January 2016).
Unfortunately, my employer **did not know** about this change in status, so for all of 2016 no Social Security or Medicare taxes were withheld.
I have found out that I need to correct this, and I need help figuring out a few things.
1. Should I have a **W-2 re-issued**? I spoke to two accountants and one said I should, the other said I shouldn't. I don't know which one to believe.
2. Who pays for the FICA I should have paid last year? Is it my employer's problem to fix or mine?
3. Should I file the taxes with the old or the new W-2?
4. As best as I understand it, the new W-2 will be written as if I made this contributions. So there will be a **discrepancy** between what I actually earned and what the W-2 says. How should I handle this discrepancy? Declare it as extra income? Or claim it back in case I earned less than I should have? | 2017/03/06 | [
"https://money.stackexchange.com/questions/77004",
"https://money.stackexchange.com",
"https://money.stackexchange.com/users/54191/"
] | >
> Should I have a W-2 re-issued?
>
>
>
A W-2 can be corrected and a new copy will be filed with the IRS if your employer incorrectly reported your income and withholding on a W-2 that they issued. In this case, though the employer didn't withhold those taxes, they should not reissue the W-2 unless they plan to pay your portion of the payroll taxes that were not withheld. (If they paid your share of the taxes, that would increase your gross income.)
>
> Who pays for the FICA I should have paid last year?
>
>
>
Both you and your employer owe 7.65% each for FICA taxes. By law your employer is required to pay their half and you are required to pay your half. Both you and your employer owe additional taxes because of this mistake.
---
Your other questions assume that your employer will pay your portion of the taxes withheld. Your employer could decide to do that, but this also assumes that it was your employer's fault that the mistakes were made. If you transitioned to resident alien but did not inform your employer, how is that your employer's fault? | According to this section in [Publication 15](https://www.irs.gov/publications/p15/ar02.html#en_US_2017_publink1000202531):
>
> **Collecting underwithheld taxes from employees.** If you withheld no
> income, social security, or Medicare taxes or less than the correct
> amount from an employee's wages, you can make it up from later pay to
> that employee. But you’re the one who owes the underpayment.
> Reimbursement is a matter for settlement between you and the employee.
> [...]
>
>
>
it seems that if the employer withheld less than the correct amount of FICA taxes from you, it is still the employer who owes your FICA taxes to the government, not you. I do not believe there is a way for you, an employee (not self-employed), to directly pay FICA taxes to the government without going through the employer. The employer can deduct the underwithheld amount from you future paychecks (assuming you still work for them), or settle it with you in some other way. In other words, you owe the employer, and the employer owes the government, but you do not directly owe the government.
If they do deduct it from your future pay, then they can issue a corrected W-2, to reflect the amount deducted from you. But they cannot issue a corrected W-2 that says FICA were deducted from you if it wasn't. |
757 | For some reason my question ([How do I make my bathroom sink easier to clean](https://diy.stackexchange.com/questions/25041/how-do-i-make-my-bathroom-sink-easier-to-clean)) was closed with nothing more than a sarcastic remark from one of the closers. So allow me to offer a defense up front: Under "We welcome these topics" in the FAQ, it says "Which tools and materials to use for a specific task."
Why was this question closed?
How can I improve the question so it can be reopened? | 2013/02/11 | [
"https://diy.meta.stackexchange.com/questions/757",
"https://diy.meta.stackexchange.com",
"https://diy.meta.stackexchange.com/users/33/"
] | I would vote to reopen. The question is about how to modify furniture, and we talk about surface treatments a lot--stain, paint, sanding, etc. | The "task" in this case is not a home improvement task, its a cleaning task. Glossy or matte, all surfaces need to be cleaned, and even high-gloss surfaces like glass can be difficult to clean after enough gunk has built up. The original question did not mention the surface type or what type of cleaning solutions were being used - if you use just water, any surface will be difficult to clean.
While the comment I left might have been sarcastic, there was some truth to it - surfaces are easier to clean if you clean then more frequently. |
225,715 | What is the difference between "Serenity" and "Tranquility"?
They were the names of two lunar mare, which among all of them are the only pair that have got names with very similar meaning. | 2015/02/05 | [
"https://english.stackexchange.com/questions/225715",
"https://english.stackexchange.com",
"https://english.stackexchange.com/users/108643/"
] | (from <http://www.etymonline.com/>)
**serene** (adj.)
mid-15c., "clear, calm," from Latin serenus "peaceful, calm, clear" (of weather), figuratively "cheerful, glad, tranquil," of uncertain origin; perhaps from a suffixed variant of PIE \*ksero- "dry," source of Greek xeros "dry" (see xerasia). In English, *applied to persons since 1630s* (italics added).
**tranquil** (adj.) from tranquility (n.), also tranquillity, late 14c., from Old French tranquilite "peace, happiness" (12c.), from Latin tranquillitatem (nominative tranquillitas) "quietness, stillness; serenity," from tranquillus "quiet, calm, still," perhaps from trans- "over" (here in its intensive sense of "exceedingly") + a root possibly related to quies "rest".
Although clearly similar, I would usually use **serene** to describe untroubled states of mind (i.e. mental calmness), and **tranquil** to describe physical stillness. | Meaning of Serenity:
>
> *noun*
>
>
> the state of being calm, peaceful and untroubled.
>
>
>
Meaning of Tranquility:
>
> *noun*
>
>
> the quality or state of being tranquil, calm.
>
>
>
There isn't much difference between the two words. In fact, if you go to Thesaurus and search for [serenity](http://www.thesaurus.com/browse/serenity?s=t), tranquility comes up as a synonym and vice versa. |
331,910 | I am reading an [article](http://iopscience.iop.org/article/10.1088/0022-3727/37/2/020/pdf) in which they consider a model for charge transport in dielectric.
The following figure can summarize the different procedures done in this manner:
[](https://i.stack.imgur.com/bloup.jpg)
I am new in the domain of electronics, plus english is not my native language, for that I am facing a problem understanding some scientific expressions, that can not be translated word by word. I try to find some definitions in wikipedea, but for some expressions I failed due to confussion in the domain (same word may have different meaning according to the domain of study).
so would some one help me understand some concepts:
What is meaning of :
1. Trapping and detrapping ?
2. why dielectrics have traps ?
3. Charge injection ?
4. Barrier height for injection?
Thank you in advance for any help. Any suggestion for references on the subject is highly appreciated. | 2017/09/29 | [
"https://electronics.stackexchange.com/questions/331910",
"https://electronics.stackexchange.com",
"https://electronics.stackexchange.com/users/159243/"
] | **Very simplified discussion.**
Here I deal just with electrons. Similar discussion is valid for holes
The band diagram shows the energy values an electron can assume. You have the forbidden band, the conduction band (first band empty or not completely filled), and the valence band (last band entirely filled by electrons). We call the difference between the bottom of the conduction band and the top of the valence band "energy gap".
**Traps, and trapping.**
Defects of any kind will introduce new energy levels. If these energy levels are in the energy gap, they will act like traps. In fact, an electron in the conduction band that comes in the proximity (it's called "cross section") of that trap, will probably get captured by that energy level as it has a lower energy (the energy difference will be likely lost by phonon emission: lattice vibration, i.e. heat).
**Detrapping:**
How long will an electron stay there? It depends on the trap depth (not only though). The shallower the trap, the higher the chance that an electron can gain enough energy (e.g. due to phonon adsorption) to come out of that trap. An electron can also come out by quantum tunneling.
**Why insulators (and semiconductors too) have traps:**
Insulators and semiconductors may have traps. These are induced by grain to grain boundaries (in polycrystalline materials), lattice imperfections, unsaturated/broken bonds, impurities, etc.
**Charge injection:**
It means when a contact (or another material) injects electrons/holes to a semiconductor (or even an insulator, as it occurs in floating gate cells). An electron can be injected into a material only if its energy is larger than the minimum energy it can assume on that material. This does not mean that if the conduction band of the "source material" is lower than the conduction band of the "destination" material, injection cannot occur. Thermoionic emission aids injection. Tunneling aids injection. And carriers can become "hot" i.e. they can gain a lot of energy, so their energy will be larger than the conduction energy of the destination material. Hot electron injection is used in NOR flash memories, to inject electrons into the floating gate (through the oxide).
**Barrier height for injection:**
It is the difference of the "destination material" conduction band level and the "source material" conduction band level. The higher the barrier height, the larger the energy difference, i.e. the less likely that injection will occur. | A good explanation for the dynamics of electron traps, is the operation of “Leyda bottles”. Which this bottle works as an electrical capacitor and with positive or negative electrical potential differentials, depending on the direction of the corresponding electric current. I have several publications and scientific evidence on this important topic "electron or ion trap". |
87,977 | [](https://i.stack.imgur.com/MtLnJ.jpg)
What do we call such type of photos where it is always kinda gray, has a cold feeling and relaxing feeling to it, and is most likely going to be in a northern country like Sweden or Canada?
I'm personally not an expert in photography but if there is some sort of genre that I can use to find similar photos that would help me a lot.
[](https://i.stack.imgur.com/PXmr2.jpg)
This image (<https://www.reddit.com/r/pics/comments/5zyw0l/two_girls_one_owl/>) is a similar photo hope it helps you better to narrow down your answer. | 2017/03/18 | [
"https://photo.stackexchange.com/questions/87977",
"https://photo.stackexchange.com",
"https://photo.stackexchange.com/users/-1/"
] | The basic tradeoffs you get for the convenience and small size/weight/price of a superzoom lens are basically a very slow maximum aperture (often going past f/5.6), and compromises on optical performance to cover the very large range.
Most typically, the compromises occur at the extremes of the zoom range. The wide end can often see odd distortion effects--not simple barrel or pincushion distortion, but what's called "mustache" or "wave "distortion--a combination of both, which may require using a lens profile to correct. Chromatic aberration and vignetting may be other possibilities. And at the long end of the range, you may see pincushion distortion and softness.
For what they are, superzoom lenses are surprisingly good--modern digital design technology on lenses can do amazing things. But the general rule of thumb is that if you don't want to compromise on optical performance, don't get a lens with a zoom range greater than 3x. And the farther you go past that range, the more compromised performance is likely to be. | The camera lens acts like a funnel in that it gathers light from the outside world and projects an image of this world on the flat surface of film or digital sensor. The focal length of a lens is that distance from the lens to the projected image when the subject is an object at an infinite distance. We call this distance infinity symbol ∞. The focal length describes the ability of the lens to magnify. If you double the focal length, say from 50mm to 100mm, the image enlargers 2X (twice). The hitch is, each doubling of the focal length results in a 4X loss in image brightness. This is because the light energy that comprises the previous image is now dispersed over four times more surface area, on film or chip.
Think about asking a kid to fill in, with paint, the outline of a box drawn on paper that measures 1 inch width by 1 inch length. The surface area of this drawn image is 1 square inch. If you enlarge this box to so that it measures 2 inches by 2 inches, the surface area is now 4 square inches. The kid will consume 4X more paint to do this task.
OK, we double the focal length to achieve a 2X increase in magnification. Now we must gain 4X more light gathering power to keep the same image brightness. That translates to a doubling of the working diameter of the lens. If we zoom from 18mm to 300mm, the magnification change is 16.6X.
Say at 18mm focal length the working diameter of a lens is 10mm
Zoom to 36mm focal length, now to keep a constant exposure the working lens diameter must be increased to 10 X 2 = 20mm. (3/4 inch)
Zoom to 70mm focal length, now to keep a constant exposure the working lens diameter must be increased to 20 X 2 = 40mm (1 ½ inch)
Zoom to 150mm focal length, now to keep a constant exposure the working lens diameter must be increased to 40 X 2 = 80mm (3 1/8 inch)
Zoom to 300mm focal length, now to keep a constant exposure the working lens diameter must be increased to 80 X 2 = 160mm (6 ¼ inch)
The point is, the diameter of the glass used to construct this lens makes it expensive to make. Additionally at 300mm, it sticks out 12 inches from the camera body.
Now the 12 inch length if used, technically makes this device a “long lens”. That’s a gadget that will be awkward to use. Our desire is to shorten this lens barrel. We can do this by what by making the front too strong, making the light rays converge too early. Then we add a lens at the rear of the barrel that reduces the strong convergence. The idea is to shorten the barrel making the array less clumsy. If we can shorten and keep the long focal length, we have made a telephoto lens!
After all this, it is our desire that the lens maintain a constant exposure (image brightness) throughout the zoom. We can accomplish if we install a mechanical iris that expands or contracts with the zoom. This has proven to be too costly. Next is to make the front lens array magnify the iris. This array moves with the zoom constantly changing the apparent size of the iris as the lens zooms. This is the design of a modern zoom lens, we have achieved a constant image brightness throughout the zoom.
Now we must concern ourselves with the seven aberrations that plague every lens. How to mitigate each as the lens is zoomed? This is a challenging task now the lens barrel must be fitted with moving lens arrays composed of different densities of glass, some convex, some concave and all moving, some together and some independent.
Yes sir, right away sir, here is your 18mm thru 300mm zoom with a constant aperture. Also sir, here is the bill for this magnificent apparatus. |
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