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3,772,916 | I know this is not a very technical question, but it's for all technical people, that's why I ask it here. Here is my question:
Can someone help me understand the current and future of learning LISP? One of my papers in university uses LISP for a project (it's a big project - may be two semester long), and I am not able to decide whether I should put lots of effort into learning LISP if there is no future in LISP, or should I just learn as much as needed for the assignments and do some other project which doesn't need any LISP. I know a little bit of basic LISP. Please help me. | 2010/09/22 | [
"https://Stackoverflow.com/questions/3772916",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/154070/"
] | Lisp is one of those languages that really changes the way you think about programming. If by value you mean marketability, it has very little value. If you mean value as in what it gives you as a developer, I would say that it is quite a bit higher. | Lisp's been cooking along for over 50 years. If it was going to die it would have died a long time ago.
Modern languages are *still* catching up to Lisp.
"It's not dead, it just smells funny" as someone once said (only my Google-fu fails in finding a citation). |
3,772,916 | I know this is not a very technical question, but it's for all technical people, that's why I ask it here. Here is my question:
Can someone help me understand the current and future of learning LISP? One of my papers in university uses LISP for a project (it's a big project - may be two semester long), and I am not able to decide whether I should put lots of effort into learning LISP if there is no future in LISP, or should I just learn as much as needed for the assignments and do some other project which doesn't need any LISP. I know a little bit of basic LISP. Please help me. | 2010/09/22 | [
"https://Stackoverflow.com/questions/3772916",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/154070/"
] | If you have a real interest in software development, you should learn Lisp and other programming languages.
Ruby, Python and Perl are distant relatives of Lisp. A bit nearer is Javascript - which is basically a primitive Lisp with a strange non-programmable syntax.
The core of Scheme is relatively clean and quite powerful. Teaches basic concepts.
Common Lisp is a powerful language which has all kinds of 'exotic' extensions. You can experience multi-paradigm programming in a single language.
Clojure is a newer Lisp which breaks with the Lisp tradition in multiple ways, but offers an interesting blend of a functional language and concurrency.
All three Lisp dialects offer meta-linguistic abstraction capabilities that few languages offer in such an elegant way (Prolog would be another interesting language that has similar capabilities).
Experiencing that code is data and data can be code will change your view on programming forever. | ### It has no commercial future but learn it anyway
You aren't fully educated in computer science until you know Lisp.
---
If Lisp was going to catch on it would have done so, you know, in the last 50 years or so. You can disregard the people saying that Lisp implementation #127 is going to finally catch on.
Still, it is so unique and powerful that it should be well worth your time to understand it. |
3,772,916 | I know this is not a very technical question, but it's for all technical people, that's why I ask it here. Here is my question:
Can someone help me understand the current and future of learning LISP? One of my papers in university uses LISP for a project (it's a big project - may be two semester long), and I am not able to decide whether I should put lots of effort into learning LISP if there is no future in LISP, or should I just learn as much as needed for the assignments and do some other project which doesn't need any LISP. I know a little bit of basic LISP. Please help me. | 2010/09/22 | [
"https://Stackoverflow.com/questions/3772916",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/154070/"
] | Lisp's been cooking along for over 50 years. If it was going to die it would have died a long time ago.
Modern languages are *still* catching up to Lisp.
"It's not dead, it just smells funny" as someone once said (only my Google-fu fails in finding a citation). | I believe there is a lot of value in LISP and currently we see a kind of Lisp renaissance, with new languages like clojure. Even Python and Ruby are very lispy under the skin.
Also the concepts learned in LISP often transfer over to other languages and will make you a better developer whatever language you use on the day job. |
3,772,916 | I know this is not a very technical question, but it's for all technical people, that's why I ask it here. Here is my question:
Can someone help me understand the current and future of learning LISP? One of my papers in university uses LISP for a project (it's a big project - may be two semester long), and I am not able to decide whether I should put lots of effort into learning LISP if there is no future in LISP, or should I just learn as much as needed for the assignments and do some other project which doesn't need any LISP. I know a little bit of basic LISP. Please help me. | 2010/09/22 | [
"https://Stackoverflow.com/questions/3772916",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/154070/"
] | Some of the features that we take for granted in new languages had their origins in Lisp. ([This article](http://www.paulgraham.com/diff.html) has more information on this). Languages [continue to borrow](http://blog.vmathew.in/invokedynamic) ideas from Lisp. Lisp's biggest advantage is its ability to represent *code as data and data as code*, which most of the 'popular' languages cannot accommodate because of their convoluted syntax. Lisp remains at the forefront of programming language research, and the next *earth shaking* language will be closer to Lisp than to anything else! So a knowledge of Lisp programming will keep you ahead in the game. | If you learn Lisp (not LISP :) you will become a better programmer overall. If you are in university, I believe it would be a good investment of your time.
There is a lot of movement in Lisp lately (Clojure, etc...). Maybe it might be used more in commercial in future. I hope so. Lisp is fun! |
3,772,916 | I know this is not a very technical question, but it's for all technical people, that's why I ask it here. Here is my question:
Can someone help me understand the current and future of learning LISP? One of my papers in university uses LISP for a project (it's a big project - may be two semester long), and I am not able to decide whether I should put lots of effort into learning LISP if there is no future in LISP, or should I just learn as much as needed for the assignments and do some other project which doesn't need any LISP. I know a little bit of basic LISP. Please help me. | 2010/09/22 | [
"https://Stackoverflow.com/questions/3772916",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/154070/"
] | Lisp's been cooking along for over 50 years. If it was going to die it would have died a long time ago.
Modern languages are *still* catching up to Lisp.
"It's not dead, it just smells funny" as someone once said (only my Google-fu fails in finding a citation). | If you learn Lisp (not LISP :) you will become a better programmer overall. If you are in university, I believe it would be a good investment of your time.
There is a lot of movement in Lisp lately (Clojure, etc...). Maybe it might be used more in commercial in future. I hope so. Lisp is fun! |
3,772,916 | I know this is not a very technical question, but it's for all technical people, that's why I ask it here. Here is my question:
Can someone help me understand the current and future of learning LISP? One of my papers in university uses LISP for a project (it's a big project - may be two semester long), and I am not able to decide whether I should put lots of effort into learning LISP if there is no future in LISP, or should I just learn as much as needed for the assignments and do some other project which doesn't need any LISP. I know a little bit of basic LISP. Please help me. | 2010/09/22 | [
"https://Stackoverflow.com/questions/3772916",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/154070/"
] | If you have a real interest in software development, you should learn Lisp and other programming languages.
Ruby, Python and Perl are distant relatives of Lisp. A bit nearer is Javascript - which is basically a primitive Lisp with a strange non-programmable syntax.
The core of Scheme is relatively clean and quite powerful. Teaches basic concepts.
Common Lisp is a powerful language which has all kinds of 'exotic' extensions. You can experience multi-paradigm programming in a single language.
Clojure is a newer Lisp which breaks with the Lisp tradition in multiple ways, but offers an interesting blend of a functional language and concurrency.
All three Lisp dialects offer meta-linguistic abstraction capabilities that few languages offer in such an elegant way (Prolog would be another interesting language that has similar capabilities).
Experiencing that code is data and data can be code will change your view on programming forever. | If you learn Lisp (not LISP :) you will become a better programmer overall. If you are in university, I believe it would be a good investment of your time.
There is a lot of movement in Lisp lately (Clojure, etc...). Maybe it might be used more in commercial in future. I hope so. Lisp is fun! |
46,470 | In Fallout:NV, I initially was going against the NCR early on, but switched allegiances to see how their storyline played out.
All NCR troops accepted me as OK except for HELIOS ONE, where I had diverted power to all neighboring regions. They would attempt to kill me on sight, so I killed them all.
The problem is that I still have a quest open for requesting support from them....any way to complete this quest? I would have expected that it would fail once all the troops were dead...
The actual quest is 'Restoring Hope.'
>
> Go to HELIOS One to ask about Forlorn Hope supplies.
>
>
> | 2012/01/10 | [
"https://gaming.stackexchange.com/questions/46470",
"https://gaming.stackexchange.com",
"https://gaming.stackexchange.com/users/2222/"
] | You should find Lt. Haggerty in HELIOS One to get information on the supplies you are tracking. If you have killed her, the quest is still solvable by finding the supplies without the tracer. They are directly north of the northeast corner of the Southern Nevada Wind Farm. The quest should update then to your next goal.
If that doesn't work, check where the quest marker on your compass is pointing to. Perhaps you've forgotten to do something in the quest. | For anyone coming to this currently, make a bee line from helios one to forlorn hope, you'll see ncr agents dead surrounding a case. |
198,137 | Ok, so I'm willing to bet at least one person has looked at the title of this question and thought to themselves "What?", so I'll try and explain this as thoroughly as I can.
Most incarnations of Pyrokinesis I've seen in fiction often deal with either telekinetically starting fires by exciting the flammable properties within the objects around them, or just straight up creating and releasing fire from within a person's body (the science behind this particular incarnation of the ability often varies from each piece of work). Some pyrokinetic people in fiction however, are capable of moving and shaping fires that are around them, sorta like how Aerokinesis lets you move air/wind and apply a shape to it.
Since fire is nothing but the result of a flammable material/substance getting exposed to oxygen and heat, this got me thinking. What are pyrokinetic people actually moving when they use their powers? Calling it fire seems inaccurate seeing as how fire itself lacks weight, cannot exist without certain requirements, and is treated less like a 'thing' but more so a chemical reaction. My understanding on science is how you say "Painfully mediocre", so I wonder if any of you guys and girls could help me out? | 2021/03/20 | [
"https://worldbuilding.stackexchange.com/questions/198137",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/81305/"
] | **Moving a match**
How do you normally move fire? You might shape the fire with funnels or wind, but the starting point is always the same. The flammable material. If you want to move the fire of a match, you move the match. Moving the match moves the flammable material, which in turn moves the origin point of the flame.
With telekinesis you want to move the flammable material as well, be it oil fumes or burning wood. Shaping of flame can be done afterwards with wind and funnels, which is basically pressure the flame cannot overcome. Telekinesis can so this as well while mindful of the limitations of the flame, like reach, starting point and duration. | What is fire? Fire happens normally when objects oxidize quickly, but in the case of pyrokinesis / telekinesis of fire, in my mind, there is an implication of the ability of the caster to facilitate the transfer of energy between molecules. Therefore, when someone is "telekinetically moving/shaping fire," they are transferring energy from the particles in one region of space to the particles in another region of space. So similar to what @DWKraus says in their comment, telekinesis of fire should allow the user to move energy to cause molecular heating.
However, I think generalizing it in this way has its benefits, and can potentially take the idea of moving/shaping fire to the next level. What happens, for example, when energy is concentrated in a certain location? Since kinetic energy actually has mass (and since mass and energy are equivalent by E=mc^2), moving/shaping fire could even be the basis for abilities that control mass or gravity, or even slow and alter the movement of time, given the connection that gravity has to time. Makes the ability a lot more interesting to think of it this way, but that's just my 2 cents |
198,137 | Ok, so I'm willing to bet at least one person has looked at the title of this question and thought to themselves "What?", so I'll try and explain this as thoroughly as I can.
Most incarnations of Pyrokinesis I've seen in fiction often deal with either telekinetically starting fires by exciting the flammable properties within the objects around them, or just straight up creating and releasing fire from within a person's body (the science behind this particular incarnation of the ability often varies from each piece of work). Some pyrokinetic people in fiction however, are capable of moving and shaping fires that are around them, sorta like how Aerokinesis lets you move air/wind and apply a shape to it.
Since fire is nothing but the result of a flammable material/substance getting exposed to oxygen and heat, this got me thinking. What are pyrokinetic people actually moving when they use their powers? Calling it fire seems inaccurate seeing as how fire itself lacks weight, cannot exist without certain requirements, and is treated less like a 'thing' but more so a chemical reaction. My understanding on science is how you say "Painfully mediocre", so I wonder if any of you guys and girls could help me out? | 2021/03/20 | [
"https://worldbuilding.stackexchange.com/questions/198137",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/81305/"
] | **Moving a match**
How do you normally move fire? You might shape the fire with funnels or wind, but the starting point is always the same. The flammable material. If you want to move the fire of a match, you move the match. Moving the match moves the flammable material, which in turn moves the origin point of the flame.
With telekinesis you want to move the flammable material as well, be it oil fumes or burning wood. Shaping of flame can be done afterwards with wind and funnels, which is basically pressure the flame cannot overcome. Telekinesis can so this as well while mindful of the limitations of the flame, like reach, starting point and duration. | This is the type of insightful deliberation that totally kills fantasy. There is a reason why it is called 'fantasy'. It just has to be something you do not think about or subject to intense scrutiny. Better to just leave it as, well, fantasy.
You are absolutely correct in bringing our attention to the reality that 'fire' is a very nebulous term. It is a concept. Really, no one has ever been injured by 'fire', they are injured by either the intense heat, or the toxic components of combustion, or the combustion (chemical reaction) itself. Firefighters are trained to and learn to ignore the 'fire', but concentrate on the individual very real dangers. That 'flame' will not injure you, but the heat, the smoke, the weakened floor, and lack of oxygen will. Any 'manipulation of fire' would, in essence, be the manipulation of one or more of these factors, not the 'fire' itself.
As you point out, what we call 'fire' is really just a perceptual, conceptual thing, not a physical thing. It only occurs in our mind. What exists in reality is the heat, the radiation, the products of combustion, and the results of combustion (the destruction of the fuel as it changes its chemistry). These things we conceptually all lump together and label as something called 'fire', and then put an emotional tag of 'bad and dangerous' to it. Once labeled and tagged, our minds have the distinct ability to handle it as a concept, and respond to the emotional tag. Thereafter the concept can be manipulated and altered, without needing to reference the underlying reality of the 'things' that actually make up the concept, and we continue to apply the emotional tag to the manipulated concept. We treat the concept, and the emotional tag, as a separate entity from all of its parts. The 'whole' still exists even if none of its parts continue to exist. We become afraid of the tag, the label, not the reality. Long after there is no danger from the reality of the components of this concept we call 'fire', we are still in fear of the concept called 'fire'. The word itself takes on a reality of its own.
It's like talking about the hazards of 'falling'. There is no such thing as ***a fall***. Everything is 'falling'. There is absolutely no danger in a fall, per say. It is the sudden stop at the end that creates the damage. Yet we still fear the fall, not the sudden stop at the end. Even in amusement park rides, when the danger of any sudden stop is removed, we still fear the fall.
Like saying 'I don't like vegetables', as if the label were a real thing. As the commercial infers, say 'fries are vegetables', and suddenly you do not like them.
Fantasy is really all about these labels and tags that our mind forms and creates, and our emotional reaction to these tags, not the reality behind them.
So render unto fantasy what is fantasy, and onto reality what is reality. Never conflict the two. Humans tend to like their emotional tags, thank you very much. |
198,137 | Ok, so I'm willing to bet at least one person has looked at the title of this question and thought to themselves "What?", so I'll try and explain this as thoroughly as I can.
Most incarnations of Pyrokinesis I've seen in fiction often deal with either telekinetically starting fires by exciting the flammable properties within the objects around them, or just straight up creating and releasing fire from within a person's body (the science behind this particular incarnation of the ability often varies from each piece of work). Some pyrokinetic people in fiction however, are capable of moving and shaping fires that are around them, sorta like how Aerokinesis lets you move air/wind and apply a shape to it.
Since fire is nothing but the result of a flammable material/substance getting exposed to oxygen and heat, this got me thinking. What are pyrokinetic people actually moving when they use their powers? Calling it fire seems inaccurate seeing as how fire itself lacks weight, cannot exist without certain requirements, and is treated less like a 'thing' but more so a chemical reaction. My understanding on science is how you say "Painfully mediocre", so I wonder if any of you guys and girls could help me out? | 2021/03/20 | [
"https://worldbuilding.stackexchange.com/questions/198137",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/81305/"
] | Let's begin with one of the best explanations for making fire by magic I've ever heard: [vibrating molecules](https://www.youtube.com/watch?v=bkNPcl7t2Zw&t=28s).
>
> What you need is a basic combat spell, making fire. What causes molecules to heat up? *They vibrate.* Everything you see is in a constant state of vibration, thus the illusion of solidity. But how do we take that which appears solid and have it burst into flames? We *will* the vibrations to go faster.... ([The Sorcerer's Apprentice (2010)](https://en.wikipedia.org/wiki/The_Sorcerer%27s_Apprentice_(2010_film)))
>
>
>
People think fire is an *element.* But from one point of view, it's no more an element than ice. Oversimplifying to the point of making angels weep, it's nothing more than another [state of matter](https://en.wikipedia.org/wiki/List_of_states_of_matter): plasma. That's why that previous quote is so fun: your pyrokinetics are actually creating and manipulating plasma. In other words, they're not manipulating fire, they're causing atoms and molecules to vibrate to force them into a plasmatic state.
It's the other point of view (the more common one) that's a problem. You see, *Flame* may contain plasma, but it isn't plasma.
>
> An everyday wax candle has a flame that burns at a maximum temperature of 1,500 degrees Celsius, which is too low to create very many ions. A candle flame is therefore not a plasma. Note that the vibrant red-orange-yellow colors that we see in a flame are not created from the flame being a plasma. Rather, these colors are emitted by incompletely-burnt particles of fuel ("soot") that are so hot that they are glowing like an electric toaster element. If you pump enough oxygen into a flame, the combustion becomes complete and the red-orange-yellow flame goes away. ("[Do flames contain plasma?](https://wtamu.edu/%7Ecbaird/sq/2014/05/28/do-flames-contain-plasma/)")
>
>
>
This is the problem with the idea of a pyrokinetic "moving" flame. Most flame is simply inefficient combustion, and the odds are the combustive process will complete long before you can move it anywhere. Oxygen depletes, as does the fuel source. That's why the plasma definition is so much more interesting — because in the case of combustion, your character isn't really a pyrokinetic, they're just a telekinetic that happens to be moving around the proverbial burning stick.
**What you have is a multi-talented character**
A true pyrokinetic must have two abilities: the ability to convert some substance into its plasmatic state and the subsequent ability to move that material around. For my money, moving something around is a bit unrealistic. Think about it, you're connecting with how many bazillion atoms to move them around?
What makes more sense is that you can *encapsulate* a region of space. Let's say a sphere 100cm in diameter. It's the *sphere* that's being moved — not the material inside of it — and it's the contents of the *sphere* that can be caused to vibrate with such venom as to become a plasma.
Shaping the "fire" is nothing more than learning how to shape the encapsulating sphere.
However, the consequence of this explanation is that the sphere must, by definition, not allow the heat of the plasma to escape. It's encapsulating everything (otherwise you couldn't contain or shape it in the first place). This means that to burn something the pyrokinetic must free (un-encapsulate) the mass he/she is manipulating. If this isn't done, what you have is the equivalent of a really cool looking dodge ball.
*However, to be fair, something is escaping... light (otherwise the effect is a black sphere and that's boring). If light can escape, then for practical purposes, so can other frequencies in the electromagnetic spectrum. Not heat, just light. But this has an interesting consequence. If you heat a plasma up enough, the intensity of the light could burn things. However, we'd need someone better schooled in plasma physics to confirm this.* | What is fire? Fire happens normally when objects oxidize quickly, but in the case of pyrokinesis / telekinesis of fire, in my mind, there is an implication of the ability of the caster to facilitate the transfer of energy between molecules. Therefore, when someone is "telekinetically moving/shaping fire," they are transferring energy from the particles in one region of space to the particles in another region of space. So similar to what @DWKraus says in their comment, telekinesis of fire should allow the user to move energy to cause molecular heating.
However, I think generalizing it in this way has its benefits, and can potentially take the idea of moving/shaping fire to the next level. What happens, for example, when energy is concentrated in a certain location? Since kinetic energy actually has mass (and since mass and energy are equivalent by E=mc^2), moving/shaping fire could even be the basis for abilities that control mass or gravity, or even slow and alter the movement of time, given the connection that gravity has to time. Makes the ability a lot more interesting to think of it this way, but that's just my 2 cents |
198,137 | Ok, so I'm willing to bet at least one person has looked at the title of this question and thought to themselves "What?", so I'll try and explain this as thoroughly as I can.
Most incarnations of Pyrokinesis I've seen in fiction often deal with either telekinetically starting fires by exciting the flammable properties within the objects around them, or just straight up creating and releasing fire from within a person's body (the science behind this particular incarnation of the ability often varies from each piece of work). Some pyrokinetic people in fiction however, are capable of moving and shaping fires that are around them, sorta like how Aerokinesis lets you move air/wind and apply a shape to it.
Since fire is nothing but the result of a flammable material/substance getting exposed to oxygen and heat, this got me thinking. What are pyrokinetic people actually moving when they use their powers? Calling it fire seems inaccurate seeing as how fire itself lacks weight, cannot exist without certain requirements, and is treated less like a 'thing' but more so a chemical reaction. My understanding on science is how you say "Painfully mediocre", so I wonder if any of you guys and girls could help me out? | 2021/03/20 | [
"https://worldbuilding.stackexchange.com/questions/198137",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/81305/"
] | This is the type of insightful deliberation that totally kills fantasy. There is a reason why it is called 'fantasy'. It just has to be something you do not think about or subject to intense scrutiny. Better to just leave it as, well, fantasy.
You are absolutely correct in bringing our attention to the reality that 'fire' is a very nebulous term. It is a concept. Really, no one has ever been injured by 'fire', they are injured by either the intense heat, or the toxic components of combustion, or the combustion (chemical reaction) itself. Firefighters are trained to and learn to ignore the 'fire', but concentrate on the individual very real dangers. That 'flame' will not injure you, but the heat, the smoke, the weakened floor, and lack of oxygen will. Any 'manipulation of fire' would, in essence, be the manipulation of one or more of these factors, not the 'fire' itself.
As you point out, what we call 'fire' is really just a perceptual, conceptual thing, not a physical thing. It only occurs in our mind. What exists in reality is the heat, the radiation, the products of combustion, and the results of combustion (the destruction of the fuel as it changes its chemistry). These things we conceptually all lump together and label as something called 'fire', and then put an emotional tag of 'bad and dangerous' to it. Once labeled and tagged, our minds have the distinct ability to handle it as a concept, and respond to the emotional tag. Thereafter the concept can be manipulated and altered, without needing to reference the underlying reality of the 'things' that actually make up the concept, and we continue to apply the emotional tag to the manipulated concept. We treat the concept, and the emotional tag, as a separate entity from all of its parts. The 'whole' still exists even if none of its parts continue to exist. We become afraid of the tag, the label, not the reality. Long after there is no danger from the reality of the components of this concept we call 'fire', we are still in fear of the concept called 'fire'. The word itself takes on a reality of its own.
It's like talking about the hazards of 'falling'. There is no such thing as ***a fall***. Everything is 'falling'. There is absolutely no danger in a fall, per say. It is the sudden stop at the end that creates the damage. Yet we still fear the fall, not the sudden stop at the end. Even in amusement park rides, when the danger of any sudden stop is removed, we still fear the fall.
Like saying 'I don't like vegetables', as if the label were a real thing. As the commercial infers, say 'fries are vegetables', and suddenly you do not like them.
Fantasy is really all about these labels and tags that our mind forms and creates, and our emotional reaction to these tags, not the reality behind them.
So render unto fantasy what is fantasy, and onto reality what is reality. Never conflict the two. Humans tend to like their emotional tags, thank you very much. | What is fire? Fire happens normally when objects oxidize quickly, but in the case of pyrokinesis / telekinesis of fire, in my mind, there is an implication of the ability of the caster to facilitate the transfer of energy between molecules. Therefore, when someone is "telekinetically moving/shaping fire," they are transferring energy from the particles in one region of space to the particles in another region of space. So similar to what @DWKraus says in their comment, telekinesis of fire should allow the user to move energy to cause molecular heating.
However, I think generalizing it in this way has its benefits, and can potentially take the idea of moving/shaping fire to the next level. What happens, for example, when energy is concentrated in a certain location? Since kinetic energy actually has mass (and since mass and energy are equivalent by E=mc^2), moving/shaping fire could even be the basis for abilities that control mass or gravity, or even slow and alter the movement of time, given the connection that gravity has to time. Makes the ability a lot more interesting to think of it this way, but that's just my 2 cents |
198,137 | Ok, so I'm willing to bet at least one person has looked at the title of this question and thought to themselves "What?", so I'll try and explain this as thoroughly as I can.
Most incarnations of Pyrokinesis I've seen in fiction often deal with either telekinetically starting fires by exciting the flammable properties within the objects around them, or just straight up creating and releasing fire from within a person's body (the science behind this particular incarnation of the ability often varies from each piece of work). Some pyrokinetic people in fiction however, are capable of moving and shaping fires that are around them, sorta like how Aerokinesis lets you move air/wind and apply a shape to it.
Since fire is nothing but the result of a flammable material/substance getting exposed to oxygen and heat, this got me thinking. What are pyrokinetic people actually moving when they use their powers? Calling it fire seems inaccurate seeing as how fire itself lacks weight, cannot exist without certain requirements, and is treated less like a 'thing' but more so a chemical reaction. My understanding on science is how you say "Painfully mediocre", so I wonder if any of you guys and girls could help me out? | 2021/03/20 | [
"https://worldbuilding.stackexchange.com/questions/198137",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/81305/"
] | Let's begin with one of the best explanations for making fire by magic I've ever heard: [vibrating molecules](https://www.youtube.com/watch?v=bkNPcl7t2Zw&t=28s).
>
> What you need is a basic combat spell, making fire. What causes molecules to heat up? *They vibrate.* Everything you see is in a constant state of vibration, thus the illusion of solidity. But how do we take that which appears solid and have it burst into flames? We *will* the vibrations to go faster.... ([The Sorcerer's Apprentice (2010)](https://en.wikipedia.org/wiki/The_Sorcerer%27s_Apprentice_(2010_film)))
>
>
>
People think fire is an *element.* But from one point of view, it's no more an element than ice. Oversimplifying to the point of making angels weep, it's nothing more than another [state of matter](https://en.wikipedia.org/wiki/List_of_states_of_matter): plasma. That's why that previous quote is so fun: your pyrokinetics are actually creating and manipulating plasma. In other words, they're not manipulating fire, they're causing atoms and molecules to vibrate to force them into a plasmatic state.
It's the other point of view (the more common one) that's a problem. You see, *Flame* may contain plasma, but it isn't plasma.
>
> An everyday wax candle has a flame that burns at a maximum temperature of 1,500 degrees Celsius, which is too low to create very many ions. A candle flame is therefore not a plasma. Note that the vibrant red-orange-yellow colors that we see in a flame are not created from the flame being a plasma. Rather, these colors are emitted by incompletely-burnt particles of fuel ("soot") that are so hot that they are glowing like an electric toaster element. If you pump enough oxygen into a flame, the combustion becomes complete and the red-orange-yellow flame goes away. ("[Do flames contain plasma?](https://wtamu.edu/%7Ecbaird/sq/2014/05/28/do-flames-contain-plasma/)")
>
>
>
This is the problem with the idea of a pyrokinetic "moving" flame. Most flame is simply inefficient combustion, and the odds are the combustive process will complete long before you can move it anywhere. Oxygen depletes, as does the fuel source. That's why the plasma definition is so much more interesting — because in the case of combustion, your character isn't really a pyrokinetic, they're just a telekinetic that happens to be moving around the proverbial burning stick.
**What you have is a multi-talented character**
A true pyrokinetic must have two abilities: the ability to convert some substance into its plasmatic state and the subsequent ability to move that material around. For my money, moving something around is a bit unrealistic. Think about it, you're connecting with how many bazillion atoms to move them around?
What makes more sense is that you can *encapsulate* a region of space. Let's say a sphere 100cm in diameter. It's the *sphere* that's being moved — not the material inside of it — and it's the contents of the *sphere* that can be caused to vibrate with such venom as to become a plasma.
Shaping the "fire" is nothing more than learning how to shape the encapsulating sphere.
However, the consequence of this explanation is that the sphere must, by definition, not allow the heat of the plasma to escape. It's encapsulating everything (otherwise you couldn't contain or shape it in the first place). This means that to burn something the pyrokinetic must free (un-encapsulate) the mass he/she is manipulating. If this isn't done, what you have is the equivalent of a really cool looking dodge ball.
*However, to be fair, something is escaping... light (otherwise the effect is a black sphere and that's boring). If light can escape, then for practical purposes, so can other frequencies in the electromagnetic spectrum. Not heat, just light. But this has an interesting consequence. If you heat a plasma up enough, the intensity of the light could burn things. However, we'd need someone better schooled in plasma physics to confirm this.* | This is the type of insightful deliberation that totally kills fantasy. There is a reason why it is called 'fantasy'. It just has to be something you do not think about or subject to intense scrutiny. Better to just leave it as, well, fantasy.
You are absolutely correct in bringing our attention to the reality that 'fire' is a very nebulous term. It is a concept. Really, no one has ever been injured by 'fire', they are injured by either the intense heat, or the toxic components of combustion, or the combustion (chemical reaction) itself. Firefighters are trained to and learn to ignore the 'fire', but concentrate on the individual very real dangers. That 'flame' will not injure you, but the heat, the smoke, the weakened floor, and lack of oxygen will. Any 'manipulation of fire' would, in essence, be the manipulation of one or more of these factors, not the 'fire' itself.
As you point out, what we call 'fire' is really just a perceptual, conceptual thing, not a physical thing. It only occurs in our mind. What exists in reality is the heat, the radiation, the products of combustion, and the results of combustion (the destruction of the fuel as it changes its chemistry). These things we conceptually all lump together and label as something called 'fire', and then put an emotional tag of 'bad and dangerous' to it. Once labeled and tagged, our minds have the distinct ability to handle it as a concept, and respond to the emotional tag. Thereafter the concept can be manipulated and altered, without needing to reference the underlying reality of the 'things' that actually make up the concept, and we continue to apply the emotional tag to the manipulated concept. We treat the concept, and the emotional tag, as a separate entity from all of its parts. The 'whole' still exists even if none of its parts continue to exist. We become afraid of the tag, the label, not the reality. Long after there is no danger from the reality of the components of this concept we call 'fire', we are still in fear of the concept called 'fire'. The word itself takes on a reality of its own.
It's like talking about the hazards of 'falling'. There is no such thing as ***a fall***. Everything is 'falling'. There is absolutely no danger in a fall, per say. It is the sudden stop at the end that creates the damage. Yet we still fear the fall, not the sudden stop at the end. Even in amusement park rides, when the danger of any sudden stop is removed, we still fear the fall.
Like saying 'I don't like vegetables', as if the label were a real thing. As the commercial infers, say 'fries are vegetables', and suddenly you do not like them.
Fantasy is really all about these labels and tags that our mind forms and creates, and our emotional reaction to these tags, not the reality behind them.
So render unto fantasy what is fantasy, and onto reality what is reality. Never conflict the two. Humans tend to like their emotional tags, thank you very much. |
13,047 | Why does VirtualBox from the Ubuntu repositories not support USB?
(While the [official release](http://www.virtualbox.org/wiki/Linux_Downloads) does support it?) | 2010/11/13 | [
"https://askubuntu.com/questions/13047",
"https://askubuntu.com",
"https://askubuntu.com/users/5034/"
] | The USB code in VirtualBox is not open-source.The ubuntu repository is the open version,so the open source edition of VirtualBox doesn't have USB function.It's easy enough to install the full one from virtualbox's website. | As an update: since version 4, they re-architected VirtualBox so that the standard distribution is fully open-source, and the proprietary features have been [moved off into an extension pack](https://www.virtualbox.org/manual/ch01.html#intro-installing). So you can install the Ubuntu package, and download the extension pack from Oracle. |
8,528 | From: <http://sharkshield.com/>
Shark Shield is a unique shark deterrent system utilizing a technologically advanced three dimensional electrical wave form. Shark Shield technology is available for recreational users and water sports professionals to help all people enjoy the water with a new dimension – peace of mind; for themselves, their families and employees.
I'm referring to Shark Shield as an example. **What does a shark repellent circuit look like?** What would be the maximum range you get under water and does it depend on the power source?
Is this simply putting + and - nodes under water and pulsating them with DC power? | 2011/01/03 | [
"https://electronics.stackexchange.com/questions/8528",
"https://electronics.stackexchange.com",
"https://electronics.stackexchange.com/users/561/"
] | There FAQ has a little more information <http://sharkshield.com/?/m/faqs> -
From what I gather from the limited info on the site, is that there is a small signal coming from the antenna. As for the specifics of the circuit and signal, its probably fairly simple, just a signal generator and an amp to the antenna. (just a guess)
The question is does it truly work, I have no clue im not a scuba diver or ever plan on being in the area where there are sharks present.
one interesting quote that gives some clue to the power is
>
> Has the Shark Shield been proven to be safe to humans?
>
>
> The field generated by the Shark Shield, when used in accordance with the instructions >contained in the instruction booklet supplied with each unit, poses no danger to the >user, to sharks or to the environment. The field can be detected if the electrodes come >into very close contact with the skin.
>
>
> Direct contact with, or very close proximity to the antenna, may cause twitching of the >surface muscles of the skin, in time with the slow pulsing of the signal. The conductive >field readily travels through seawater, it being a better conductor than the human body. >Thus the field tends to surround the body rather than penetrate it. Scientific tests show that the type of signal generated by the Shark Shield is unable to pass through body tissues, unlike radio waves or microwaves that readily penetrate the body, and therefore it poses no health problems for users.
>
>
> | This sounds like a complete joke to me, but I will entertain an answer. Electrical energy does not propagate very well at all under water. The "skin depth" of water is something like half a meter @ 1MHz and maybe 7m @ 1kHz. As a rule of thumb, the lower the frequency (i.e. the longer the wavelength), the bigger the antenna you need to radiate at that frequency. As a point of reference, I think a 1kHz quarter-wave dipole antenna would be something like 25 miles tall. I would be more inclined to believe a shark deterent system (if such a thing exists) would be based on very low frequency acoustic technology...
On the other hand, the article linked by @jsolarski above makes it sound like there is some actual scientific research out there that supports it experimentally... |
8,433 | I saw the following sentence in today's New York Times. I understand 'Rock-God' means an artist almost deified by fans because of his or her performance and reputation. Can 'Rock-God' be applied to musicians other than rock singer?
>
> Billie Joe Armstrong, the Green Day frontman, brings a jolt of rock-god electricity to the Broadway musical "American Idiot."
>
>
> | 2011/01/11 | [
"https://english.stackexchange.com/questions/8433",
"https://english.stackexchange.com",
"https://english.stackexchange.com/users/3119/"
] | Since the word "rock" appears in the title, presumably "rock-god" can only apply to practitioners of rock music. "Rock star" is the term you normally hear, however.
One could be a "god" of other types of music — country, classical, klezmer, what have you — but it just wouldn't be the same.
Still, the "almost deified by their fans" part is neither a rock nor even a recent phenomenon. It has applied to musicians throughout the ages. Frank Sinatra crooned to legions of screaming [bobby soxer](http://en.wikipedia.org/wiki/Bobby_soxer)s, Rudy Vallee before him became the first mass-media pop star, and *way* before that piano virtuoso [Franz Liszt](http://en.wikipedia.org/wiki/Franz_Liszt) fornicated his way across Europe on the strength of his fame. From the Wikipedia article on Liszt:
>
> After 1842 "Lisztomania" swept across Europe. The reception Liszt enjoyed as a result can only be described as hysterical. Women fought over his silk handkerchiefs and velvet gloves, which they ripped to shreds as souvenirs. Helping fuel this atmosphere was the artist's mesmeric personality and stage presence. Many witnesses later testified that Liszt's playing raised the mood of audiences to a level of mystical ecstasy.
>
>
>
Interestingly, a contemporary of Liszt, violin virtuoso [Niccolo Paganini](http://en.wikipedia.org/wiki/Paganini) was so good that he was not deified, but said to have been possessed by the devil. I guess that's as good as music gets. Eat your heart out, Billie Joe Armstrong. | On "rock-god" vs "rock star" (or even "rockstar")
The suffix "-god" (with or without the hyphen) could probably be added to any genre or profession to convey deity-like status, though the near-blasphemy is most appropriate for certain sub cultures that embrace irreverence and hyperbole: rock & roll, gamers, sports, etc.
>
> He's a gaming god
>
> She's a programming god
>
> He's a football god
>
>
>
In music, this is probably limited to rock and its subgenres e.g. "metal-god". It's unlikely someone would be called an "emo-god" or a "pop-god".
"Rock star" can be used for **any** profession, sometimes ironically. Intel made some commercials about "[engineering rock stars](http://www.engadget.com/2009/05/07/video-intel-we-are-rock-stars/)". The phrase means "a person who is outstanding at their job and worthy of admiration / adulation". You could even say someone is a "rockstar" of country music or opera without irony e.g.
>
> Enrico Caruso was the opera rockstar of his day
>
>
> |
1,176,521 | Can you list some resources that explain using ADODBAPI in python.? | 2009/07/24 | [
"https://Stackoverflow.com/questions/1176521",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/-1/"
] | ADO can be accessed with [win32 extensions for python](http://python.net/crew/mhammond/win32/Downloads.html).
ADO is acessible through COM objects.
You can have a look at this page that would give a lot of info: [<http://www.ecp.cc/pyado.html>](http://www.ecp.cc/pyado.html) | If you are referring to the Python package, here is a quick reference guide:
<http://adodbapi.sourceforge.net/quick_reference.pdf>
This includes a link to
<https://www.connectionstrings.com/>
which will help you format the connection string for whatever database file type you are using. |
5,641 | Why would liquid half-and-half creamer curdle when poured into hot coffee? This happens to me sometimes, and I'm not sure why. Could it have something to do with either the coffee being too hot or the creamer being too cold? | 2010/08/20 | [
"https://cooking.stackexchange.com/questions/5641",
"https://cooking.stackexchange.com",
"https://cooking.stackexchange.com/users/364/"
] | I would think this is happening because your cream is just about to turn sour.
As cream ages, lactic acid builds up in it. The acidity in your coffee is enough at that point to push the cream over the edge to curdling.
Try newer cream or a very low-acid coffee with old cream and you should be OK. | The acid in coffee causes the cream to curdle. |
5,641 | Why would liquid half-and-half creamer curdle when poured into hot coffee? This happens to me sometimes, and I'm not sure why. Could it have something to do with either the coffee being too hot or the creamer being too cold? | 2010/08/20 | [
"https://cooking.stackexchange.com/questions/5641",
"https://cooking.stackexchange.com",
"https://cooking.stackexchange.com/users/364/"
] | I would think this is happening because your cream is just about to turn sour.
As cream ages, lactic acid builds up in it. The acidity in your coffee is enough at that point to push the cream over the edge to curdling.
Try newer cream or a very low-acid coffee with old cream and you should be OK. | I had this happen to me in the most bizarre circumstance. I buy green coffee beans and roast them myself at home. I have decaf and regular that I roasted separately, then grind them together to make half decaf and then brew my coffee via pour over ( no machines). I did this and then used soy creamer (brand new, not old). Didn't curdle. Then, I brewed a cup with just the regular beans (no decaf). Same way, same day, everything the same other than it was full caff. Added the same soy creamer and it curdled. I repeated this exactly the next day and it did it again!! My guess is it has to do with the acidity of the coffee beans. |
5,641 | Why would liquid half-and-half creamer curdle when poured into hot coffee? This happens to me sometimes, and I'm not sure why. Could it have something to do with either the coffee being too hot or the creamer being too cold? | 2010/08/20 | [
"https://cooking.stackexchange.com/questions/5641",
"https://cooking.stackexchange.com",
"https://cooking.stackexchange.com/users/364/"
] | I would think this is happening because your cream is just about to turn sour.
As cream ages, lactic acid builds up in it. The acidity in your coffee is enough at that point to push the cream over the edge to curdling.
Try newer cream or a very low-acid coffee with old cream and you should be OK. | I watched an episode of Blue Bloods where Mr. Selleck explained to his grandkids that the secret to not having your cream curdle in your (Irish) coffee was to hold your spoon upside down over your coffee and pour the cream over the back of the spoon. I tried it and have never had curdled cream in my coffee since. Don't know why it works I just know that it does. I'm guessing it might have something to do with increasing the dispersion of the cream. |
5,641 | Why would liquid half-and-half creamer curdle when poured into hot coffee? This happens to me sometimes, and I'm not sure why. Could it have something to do with either the coffee being too hot or the creamer being too cold? | 2010/08/20 | [
"https://cooking.stackexchange.com/questions/5641",
"https://cooking.stackexchange.com",
"https://cooking.stackexchange.com/users/364/"
] | I would think this is happening because your cream is just about to turn sour.
As cream ages, lactic acid builds up in it. The acidity in your coffee is enough at that point to push the cream over the edge to curdling.
Try newer cream or a very low-acid coffee with old cream and you should be OK. | I have organic heavy cream expiration date is March 15th 2018. Its Feb 17th. When I pour it in my hot coffee it's still looks like it's curdled until I stir it in. Even if I pour it over the back of a spoon. Still tastes great and it hasn't upset my stomach. But it is odd that it looks like it's curdling, it must be an effect from the coldness of the cream to heat of the coffee, or fat content reacting to heat, acidity. My best guess. Just weird, that it happens. |
5,641 | Why would liquid half-and-half creamer curdle when poured into hot coffee? This happens to me sometimes, and I'm not sure why. Could it have something to do with either the coffee being too hot or the creamer being too cold? | 2010/08/20 | [
"https://cooking.stackexchange.com/questions/5641",
"https://cooking.stackexchange.com",
"https://cooking.stackexchange.com/users/364/"
] | I had this happen to me in the most bizarre circumstance. I buy green coffee beans and roast them myself at home. I have decaf and regular that I roasted separately, then grind them together to make half decaf and then brew my coffee via pour over ( no machines). I did this and then used soy creamer (brand new, not old). Didn't curdle. Then, I brewed a cup with just the regular beans (no decaf). Same way, same day, everything the same other than it was full caff. Added the same soy creamer and it curdled. I repeated this exactly the next day and it did it again!! My guess is it has to do with the acidity of the coffee beans. | The acid in coffee causes the cream to curdle. |
5,641 | Why would liquid half-and-half creamer curdle when poured into hot coffee? This happens to me sometimes, and I'm not sure why. Could it have something to do with either the coffee being too hot or the creamer being too cold? | 2010/08/20 | [
"https://cooking.stackexchange.com/questions/5641",
"https://cooking.stackexchange.com",
"https://cooking.stackexchange.com/users/364/"
] | I watched an episode of Blue Bloods where Mr. Selleck explained to his grandkids that the secret to not having your cream curdle in your (Irish) coffee was to hold your spoon upside down over your coffee and pour the cream over the back of the spoon. I tried it and have never had curdled cream in my coffee since. Don't know why it works I just know that it does. I'm guessing it might have something to do with increasing the dispersion of the cream. | The acid in coffee causes the cream to curdle. |
5,641 | Why would liquid half-and-half creamer curdle when poured into hot coffee? This happens to me sometimes, and I'm not sure why. Could it have something to do with either the coffee being too hot or the creamer being too cold? | 2010/08/20 | [
"https://cooking.stackexchange.com/questions/5641",
"https://cooking.stackexchange.com",
"https://cooking.stackexchange.com/users/364/"
] | I have organic heavy cream expiration date is March 15th 2018. Its Feb 17th. When I pour it in my hot coffee it's still looks like it's curdled until I stir it in. Even if I pour it over the back of a spoon. Still tastes great and it hasn't upset my stomach. But it is odd that it looks like it's curdling, it must be an effect from the coldness of the cream to heat of the coffee, or fat content reacting to heat, acidity. My best guess. Just weird, that it happens. | The acid in coffee causes the cream to curdle. |
5,641 | Why would liquid half-and-half creamer curdle when poured into hot coffee? This happens to me sometimes, and I'm not sure why. Could it have something to do with either the coffee being too hot or the creamer being too cold? | 2010/08/20 | [
"https://cooking.stackexchange.com/questions/5641",
"https://cooking.stackexchange.com",
"https://cooking.stackexchange.com/users/364/"
] | I watched an episode of Blue Bloods where Mr. Selleck explained to his grandkids that the secret to not having your cream curdle in your (Irish) coffee was to hold your spoon upside down over your coffee and pour the cream over the back of the spoon. I tried it and have never had curdled cream in my coffee since. Don't know why it works I just know that it does. I'm guessing it might have something to do with increasing the dispersion of the cream. | I had this happen to me in the most bizarre circumstance. I buy green coffee beans and roast them myself at home. I have decaf and regular that I roasted separately, then grind them together to make half decaf and then brew my coffee via pour over ( no machines). I did this and then used soy creamer (brand new, not old). Didn't curdle. Then, I brewed a cup with just the regular beans (no decaf). Same way, same day, everything the same other than it was full caff. Added the same soy creamer and it curdled. I repeated this exactly the next day and it did it again!! My guess is it has to do with the acidity of the coffee beans. |
5,641 | Why would liquid half-and-half creamer curdle when poured into hot coffee? This happens to me sometimes, and I'm not sure why. Could it have something to do with either the coffee being too hot or the creamer being too cold? | 2010/08/20 | [
"https://cooking.stackexchange.com/questions/5641",
"https://cooking.stackexchange.com",
"https://cooking.stackexchange.com/users/364/"
] | I watched an episode of Blue Bloods where Mr. Selleck explained to his grandkids that the secret to not having your cream curdle in your (Irish) coffee was to hold your spoon upside down over your coffee and pour the cream over the back of the spoon. I tried it and have never had curdled cream in my coffee since. Don't know why it works I just know that it does. I'm guessing it might have something to do with increasing the dispersion of the cream. | I have organic heavy cream expiration date is March 15th 2018. Its Feb 17th. When I pour it in my hot coffee it's still looks like it's curdled until I stir it in. Even if I pour it over the back of a spoon. Still tastes great and it hasn't upset my stomach. But it is odd that it looks like it's curdling, it must be an effect from the coldness of the cream to heat of the coffee, or fat content reacting to heat, acidity. My best guess. Just weird, that it happens. |
458,152 | So I am struggling with trying to understand what electric potential is and I wondering if this statement is correct based on my readings:
"Electric potential is the electric potential energy a charge would have if you were to place a charge at that point."
----------------------------------------------------------------------------------------------------------------------
Is that correct? Because if we have two plates where one is positive and one negative with a space between them, the electrical potentials of the positive and negative plates combine, so we know that near the negative plate and far from the positive plate, the electrical potential is very low, but far from the negative plate and near the positive plate that electrical potential is very high (Khan Academy).
Thoughts? | 2019/02/01 | [
"https://physics.stackexchange.com/questions/458152",
"https://physics.stackexchange.com",
"https://physics.stackexchange.com/users/221554/"
] | Above the critical temperature and pressure (126K), nitrogen is a supercritical fluid (has properties of both a gas and a liquid).
If it started half full of liquid, then you're asking at what pressure is the density half of liquid nitrogen. That's about 800 kg/m^3.
Using <http://www.peacesoftware.de/einigewerte/stickstoff_e.html> it appears that 450 bar at 15 degrees C will be sufficient. You can play around with finding similar at other temperatures. | The nitrogen is above its critical temperature when it is at room temperature. It doesn't contain the standard liquid or vapor phases at that point. It would be only one phase, which would be a supercritical fluid. See <https://en.wikipedia.org/wiki/Supercritical_fluid> |
509,209 | I'm wondering what you do as a programmer that's not programming but necessary for your task (eg: local setup, server setup, deployment, etc). I'm curious to know how many non-programming related tasks people are performing.
For example, when on web development projects I often:
* Install servers
* Manage user right/access to servers
* Perform backups
* Configure IIS/Apache
* Setup FTP sites
On non-web projects I often:
* Write build scripts
* Setup source code management tools/procedures
* Probably more stuff I'm not thinking of
Some tasks are more related to programming than others (such as writing build scripts) but others fall outside of my area of expertise (domain setup comes to mind). Just interested to know how many people perform tasks in their jobs that are not programming related. | 2009/02/03 | [
"https://Stackoverflow.com/questions/509209",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/34571/"
] | Well, since a programmer's primary tool is his computer, I think it's fair to assume some expertise with it. Most of those sorts of things you've described are difficult for someone unfamiliar with computers, but pretty easy (even with little prior experience) for someone who understands the domain and knows how to find and read documentation.
In a big, well-organized business or project, I'd expect someone who was more specifically familiar with those sort of administrative things to take care of them. However, if there's not enough of them to warrant a full-time job, then I don't think it's unreasonable to have anyone competent work on it; and programmers are probably at the head of the queue in that regard. | People around a work place probably expect a programmer to be their IT HelpDesk guy... it happens around here to me. argh. |
509,209 | I'm wondering what you do as a programmer that's not programming but necessary for your task (eg: local setup, server setup, deployment, etc). I'm curious to know how many non-programming related tasks people are performing.
For example, when on web development projects I often:
* Install servers
* Manage user right/access to servers
* Perform backups
* Configure IIS/Apache
* Setup FTP sites
On non-web projects I often:
* Write build scripts
* Setup source code management tools/procedures
* Probably more stuff I'm not thinking of
Some tasks are more related to programming than others (such as writing build scripts) but others fall outside of my area of expertise (domain setup comes to mind). Just interested to know how many people perform tasks in their jobs that are not programming related. | 2009/02/03 | [
"https://Stackoverflow.com/questions/509209",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/34571/"
] | I realized I'm never hired for the actual job, but as a problem solver. Whether I figure out what's going on, and fix it through code, or software, or something on the network, this seems to be the main perception of what clients want. | People around a work place probably expect a programmer to be their IT HelpDesk guy... it happens around here to me. argh. |
509,209 | I'm wondering what you do as a programmer that's not programming but necessary for your task (eg: local setup, server setup, deployment, etc). I'm curious to know how many non-programming related tasks people are performing.
For example, when on web development projects I often:
* Install servers
* Manage user right/access to servers
* Perform backups
* Configure IIS/Apache
* Setup FTP sites
On non-web projects I often:
* Write build scripts
* Setup source code management tools/procedures
* Probably more stuff I'm not thinking of
Some tasks are more related to programming than others (such as writing build scripts) but others fall outside of my area of expertise (domain setup comes to mind). Just interested to know how many people perform tasks in their jobs that are not programming related. | 2009/02/03 | [
"https://Stackoverflow.com/questions/509209",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/34571/"
] | I think the non-programming skill I use the most in my programming job is writing. It's really crucial to be able to explain ideas, designs, algorithms, and so on, and you can never count on being around to do it in person (or having the time). I spend a good amount of time at work writing up design documents and other documentation so other engineers can get their heads around my code and algorithms. So I'm really thankful that I had good writing classes in school and can put a sentence together. :-) | It often depends on the size of the company. In a little company, you have to know how to do everything, including systems admin, and network admin, even if your job is focused on programming.
In a big company, you get to see a little slice of the universe, and they often don't like you peeking outside of your box. Not only do you not need to learn everything, they're often unhappy with you if you try.
However, the more you understanding about the machines, how they work, and how they function in an operational environment, the easier it is to diagnose problems and write better software. The more you understanding about the domain you're writing applications for, the better you are able to differentiate between the users needs and their desires.
One of the coolest things about being a software developer is you have a life long excuse for sticking your nose into both the technologies and the various business domains. If you've shifted around to a few different industries, you tend to become loaded down with all sorts of interesting tidbits. There is always more to learn ...
Paul. |
509,209 | I'm wondering what you do as a programmer that's not programming but necessary for your task (eg: local setup, server setup, deployment, etc). I'm curious to know how many non-programming related tasks people are performing.
For example, when on web development projects I often:
* Install servers
* Manage user right/access to servers
* Perform backups
* Configure IIS/Apache
* Setup FTP sites
On non-web projects I often:
* Write build scripts
* Setup source code management tools/procedures
* Probably more stuff I'm not thinking of
Some tasks are more related to programming than others (such as writing build scripts) but others fall outside of my area of expertise (domain setup comes to mind). Just interested to know how many people perform tasks in their jobs that are not programming related. | 2009/02/03 | [
"https://Stackoverflow.com/questions/509209",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/34571/"
] | Well, since a programmer's primary tool is his computer, I think it's fair to assume some expertise with it. Most of those sorts of things you've described are difficult for someone unfamiliar with computers, but pretty easy (even with little prior experience) for someone who understands the domain and knows how to find and read documentation.
In a big, well-organized business or project, I'd expect someone who was more specifically familiar with those sort of administrative things to take care of them. However, if there's not enough of them to warrant a full-time job, then I don't think it's unreasonable to have anyone competent work on it; and programmers are probably at the head of the queue in that regard. | My job title is "Senior Software Engineer". In point of fact, for most of the past several years, I did fairly little software development, but did do a lot of:
Systems & web administration
Static web page development with HTML (I don't consider that programming, although I have done PHP, CGI, and JavaScript).
As others have said, help desk sorts of stuff, although not as much as in the past.
As a "task leader", I'm expected to have some people/management skills, although that usually devolves to writing monthly reports. I also get sucked into CMMi stuff from time to time, which in an ideal world might be somewhat relevant, but is usually just record keeping so the employer can bid on new contracts which require it.
Working in science lab, there's a need to know some of the science, especially if you want/need to work on the code doing the scientific calculations.
Working in a (U.S.) government facility, there's lots of paperwork and a need to know lots of government regulation (e.g. Freedom of Information Act)
Fortunately, I've recently made an internal transfer where I'm doing more development work and less of this other stuff! |
509,209 | I'm wondering what you do as a programmer that's not programming but necessary for your task (eg: local setup, server setup, deployment, etc). I'm curious to know how many non-programming related tasks people are performing.
For example, when on web development projects I often:
* Install servers
* Manage user right/access to servers
* Perform backups
* Configure IIS/Apache
* Setup FTP sites
On non-web projects I often:
* Write build scripts
* Setup source code management tools/procedures
* Probably more stuff I'm not thinking of
Some tasks are more related to programming than others (such as writing build scripts) but others fall outside of my area of expertise (domain setup comes to mind). Just interested to know how many people perform tasks in their jobs that are not programming related. | 2009/02/03 | [
"https://Stackoverflow.com/questions/509209",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/34571/"
] | I realized I'm never hired for the actual job, but as a problem solver. Whether I figure out what's going on, and fix it through code, or software, or something on the network, this seems to be the main perception of what clients want. | This depends greatly on what you're programming. If you're doing low level device drivers, it's vital that you understand the underlying hardware. If you're doing a standalone Java app, the better you understand the JVM and libraries you're using, the better - but it isn't strictly necessary to know a lot.
In general, the more you understand about your system environment, the better. How much your peers and management expect you to know depends on them.
Ignorance will, eventually, be punished. If not by your peers and management, the world will do it. Check any week's headlines or RISKS digest for examples where ignorance of the system environment cause software failure. |
509,209 | I'm wondering what you do as a programmer that's not programming but necessary for your task (eg: local setup, server setup, deployment, etc). I'm curious to know how many non-programming related tasks people are performing.
For example, when on web development projects I often:
* Install servers
* Manage user right/access to servers
* Perform backups
* Configure IIS/Apache
* Setup FTP sites
On non-web projects I often:
* Write build scripts
* Setup source code management tools/procedures
* Probably more stuff I'm not thinking of
Some tasks are more related to programming than others (such as writing build scripts) but others fall outside of my area of expertise (domain setup comes to mind). Just interested to know how many people perform tasks in their jobs that are not programming related. | 2009/02/03 | [
"https://Stackoverflow.com/questions/509209",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/34571/"
] | Probably depends on the size of the company you work for. As someone who has worked mainly at small to medium sized businesses, I've also been responsible for:
database creation, management, and tuning
supporting the internal applications I launch
managing website certificates
setting up external hosting
and I'm sure there's more as well | [rant mode on]
Ha, the curse of Excel and Word.
Outside work - particularly friends and family but sometimes when consulting or delivering software too, any and all non-technical people expect you to understand these. There's that internal groan when *someone* asks you across to have a look at a small problem they're having with some facet of Office. And because it's a client and you want to appear helpful you agree.
There's just this blanket expectation that because you're a developer you have an innate knowledge of configuring spreadsheets, fixing Word templates, and any and all other office techie tasks, and furthermore you can cast your eye over some badly configured Office mess and instantly diagnose what the problem is.
I can only just about manage to put together a spreadsheet to schedule my reoccuring invoices and set up a Word template to write them. I regularly tell people that too - but no-one ever listens. |
509,209 | I'm wondering what you do as a programmer that's not programming but necessary for your task (eg: local setup, server setup, deployment, etc). I'm curious to know how many non-programming related tasks people are performing.
For example, when on web development projects I often:
* Install servers
* Manage user right/access to servers
* Perform backups
* Configure IIS/Apache
* Setup FTP sites
On non-web projects I often:
* Write build scripts
* Setup source code management tools/procedures
* Probably more stuff I'm not thinking of
Some tasks are more related to programming than others (such as writing build scripts) but others fall outside of my area of expertise (domain setup comes to mind). Just interested to know how many people perform tasks in their jobs that are not programming related. | 2009/02/03 | [
"https://Stackoverflow.com/questions/509209",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/34571/"
] | The sad reality is that non-technical people look at technical people and expect them to know everything that is technology related, not understanding that there are specializations within technology which we might know nothing about.
I often think it is very much like a doctor that specializes in a particular discipline. All doctors have a baseline of knowledge in the medical field, but will not know the specifics of other specializations (a cardiologist will not know as much about anesthesiology and vice versa).
So while I think it is unreasonable for people to expect technologists to know *everything*, I do think that it is reasonable for them to expect that we know *something* when it comes to technology.
I think a more important facet of this question is how much one is expected to know about the specific domain where they apply their skills (finance, manufacturing, etc, etc). I think that is *incredibly* important, as having that domain knowledge makes them much more valuable as a programmer, as they can understand the problems on a deep level, and as a result, provide more comprehensive solutions for them. | This depends greatly on what you're programming. If you're doing low level device drivers, it's vital that you understand the underlying hardware. If you're doing a standalone Java app, the better you understand the JVM and libraries you're using, the better - but it isn't strictly necessary to know a lot.
In general, the more you understand about your system environment, the better. How much your peers and management expect you to know depends on them.
Ignorance will, eventually, be punished. If not by your peers and management, the world will do it. Check any week's headlines or RISKS digest for examples where ignorance of the system environment cause software failure. |
509,209 | I'm wondering what you do as a programmer that's not programming but necessary for your task (eg: local setup, server setup, deployment, etc). I'm curious to know how many non-programming related tasks people are performing.
For example, when on web development projects I often:
* Install servers
* Manage user right/access to servers
* Perform backups
* Configure IIS/Apache
* Setup FTP sites
On non-web projects I often:
* Write build scripts
* Setup source code management tools/procedures
* Probably more stuff I'm not thinking of
Some tasks are more related to programming than others (such as writing build scripts) but others fall outside of my area of expertise (domain setup comes to mind). Just interested to know how many people perform tasks in their jobs that are not programming related. | 2009/02/03 | [
"https://Stackoverflow.com/questions/509209",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/34571/"
] | Well, since a programmer's primary tool is his computer, I think it's fair to assume some expertise with it. Most of those sorts of things you've described are difficult for someone unfamiliar with computers, but pretty easy (even with little prior experience) for someone who understands the domain and knows how to find and read documentation.
In a big, well-organized business or project, I'd expect someone who was more specifically familiar with those sort of administrative things to take care of them. However, if there's not enough of them to warrant a full-time job, then I don't think it's unreasonable to have anyone competent work on it; and programmers are probably at the head of the queue in that regard. | It often depends on the size of the company. In a little company, you have to know how to do everything, including systems admin, and network admin, even if your job is focused on programming.
In a big company, you get to see a little slice of the universe, and they often don't like you peeking outside of your box. Not only do you not need to learn everything, they're often unhappy with you if you try.
However, the more you understanding about the machines, how they work, and how they function in an operational environment, the easier it is to diagnose problems and write better software. The more you understanding about the domain you're writing applications for, the better you are able to differentiate between the users needs and their desires.
One of the coolest things about being a software developer is you have a life long excuse for sticking your nose into both the technologies and the various business domains. If you've shifted around to a few different industries, you tend to become loaded down with all sorts of interesting tidbits. There is always more to learn ...
Paul. |
509,209 | I'm wondering what you do as a programmer that's not programming but necessary for your task (eg: local setup, server setup, deployment, etc). I'm curious to know how many non-programming related tasks people are performing.
For example, when on web development projects I often:
* Install servers
* Manage user right/access to servers
* Perform backups
* Configure IIS/Apache
* Setup FTP sites
On non-web projects I often:
* Write build scripts
* Setup source code management tools/procedures
* Probably more stuff I'm not thinking of
Some tasks are more related to programming than others (such as writing build scripts) but others fall outside of my area of expertise (domain setup comes to mind). Just interested to know how many people perform tasks in their jobs that are not programming related. | 2009/02/03 | [
"https://Stackoverflow.com/questions/509209",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/34571/"
] | The sad reality is that non-technical people look at technical people and expect them to know everything that is technology related, not understanding that there are specializations within technology which we might know nothing about.
I often think it is very much like a doctor that specializes in a particular discipline. All doctors have a baseline of knowledge in the medical field, but will not know the specifics of other specializations (a cardiologist will not know as much about anesthesiology and vice versa).
So while I think it is unreasonable for people to expect technologists to know *everything*, I do think that it is reasonable for them to expect that we know *something* when it comes to technology.
I think a more important facet of this question is how much one is expected to know about the specific domain where they apply their skills (finance, manufacturing, etc, etc). I think that is *incredibly* important, as having that domain knowledge makes them much more valuable as a programmer, as they can understand the problems on a deep level, and as a result, provide more comprehensive solutions for them. | Personally, I find that knowing more is always good, it paves the way to the next level. The hardest things in life is at the integration point. Literally. People focus a lot on specializing, but don't forget that you need people who can straddle both realms. |
509,209 | I'm wondering what you do as a programmer that's not programming but necessary for your task (eg: local setup, server setup, deployment, etc). I'm curious to know how many non-programming related tasks people are performing.
For example, when on web development projects I often:
* Install servers
* Manage user right/access to servers
* Perform backups
* Configure IIS/Apache
* Setup FTP sites
On non-web projects I often:
* Write build scripts
* Setup source code management tools/procedures
* Probably more stuff I'm not thinking of
Some tasks are more related to programming than others (such as writing build scripts) but others fall outside of my area of expertise (domain setup comes to mind). Just interested to know how many people perform tasks in their jobs that are not programming related. | 2009/02/03 | [
"https://Stackoverflow.com/questions/509209",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/34571/"
] | I realized I'm never hired for the actual job, but as a problem solver. Whether I figure out what's going on, and fix it through code, or software, or something on the network, this seems to be the main perception of what clients want. | It depends a lot on the type of software you're currently developing
For example, when I was working on software for a local government, I had to learn things like
* What are the rules for registering animals (pets). What are the types of registrations, what discounts apply, what are penalties for not registering on time
* How are council rates calculated. How are rates raised yearly (actually, the algorithm for raising yearly rates and its implementation was the most complex task I met so far).
* How are building permits issued. What types of inspections can be performed. Who is involved in the process of issuing a building permit (owner, builder, architect, officers etc.)
* How often are water meters read. How are water meters assigned to properties, how many dials are on a water meter, how to detach a water meter from one property and to attach to a different one
* What are different pension types. What are different discounts that are granted depending on a pension type.
* What are different types of receipts. What different types of terminal printers (those that are used to print small receipts) exist and how to print to them.
* What are properties, strata children, what are rules for dividing properties into 'parcels' ...
Well, that's just part of non-programming stuff that I learned during the 2 years on the project. The most unfortunate thing here is that now that I moved to a different company, there is very little chance that any of this knowledge I will ever use. |
23,997 | how to connect two eyepieces together with the x3 Barlow lens
I have 10mm,25mm, and x3 Barlow. Is there any way to connect them together to archive the maximum magnification of 105mm? | 2017/12/16 | [
"https://astronomy.stackexchange.com/questions/23997",
"https://astronomy.stackexchange.com",
"https://astronomy.stackexchange.com/users/20298/"
] | I'm not an expert, but I looked into this recently when toying with the idea of a scale model of the observable universe. To the best of my understanding, the following is approximately correct.
TLDR: The expansion happens on the very large scale of the universe. At the scale of the observable universe the Andromeda galaxy is a next-door neighbour, and at the local scale gravity is strong enough to override any effect of expansion.
The Milky Way is 100,000 light years across, 2.5 million light years brings us to the Andromeda galaxy.
Galaxies cluster in galaxy groups, and 10 million light years span about 50 galaxies and brings us to the edge of what's called the Local Group.
Galaxy groups cluster into superclusters. We're part of the [Laniakea Supercluster](https://www.space.com/27016-galaxy-supercluster-laniakea-milky-way-home.html), which spans about 100,000 galaxies and 500 million light years.
For any appreciable expansion (redshift 0.1) you need at least a billion light years. It's something that happens in the voids between superclusters, and doesn't become really pronounced until you're halfway across the observable universe (redshift 1, 7-8 billion light years as measured in light travel time).
For the "raisins in a loaf" analogy, I think it's not too wrong if you think of the raisins as superclusters rather than individual galaxies. Note that although the dough expands in a baking loaf, individual raisins do not, because there are other forces at work that hold them together. | In general, space in the Universe is expanding. However, this expansion can be locally retarded by high enough densities of mass-energy. On very large scales, the mean density is low enough that you can treat the whole universe as expanding. But if you look on smaller scales, you can find underdense regions (voids) where the expansion is actually *faster* than average, and overdense regions where the expansion is slower or has even ceased. Inside of clusters and galaxy groups (and of course inside galaxies themselves), the density is high enough that space is no longer expanding, and so it's perfectly possible for galaxies to move through local space towards each other and collide.
So in your raisin-loaf model, the trick is that regions right around each raisin -- and in local regions containing several raisins close to each other -- *aren't* expanding.
Note that j-g-faustus' argument is somewhat incorrect: if expansion only occurs in voids between superclusters, then Edwin Hubble would never have found it by looking at galaxies within the nearest 30 million light years. Space inside individual clusters and groups is not expanding, but space within superclusters *is* (just not as fast as space within voids). |
23,997 | how to connect two eyepieces together with the x3 Barlow lens
I have 10mm,25mm, and x3 Barlow. Is there any way to connect them together to archive the maximum magnification of 105mm? | 2017/12/16 | [
"https://astronomy.stackexchange.com/questions/23997",
"https://astronomy.stackexchange.com",
"https://astronomy.stackexchange.com/users/20298/"
] | I'm not an expert, but I looked into this recently when toying with the idea of a scale model of the observable universe. To the best of my understanding, the following is approximately correct.
TLDR: The expansion happens on the very large scale of the universe. At the scale of the observable universe the Andromeda galaxy is a next-door neighbour, and at the local scale gravity is strong enough to override any effect of expansion.
The Milky Way is 100,000 light years across, 2.5 million light years brings us to the Andromeda galaxy.
Galaxies cluster in galaxy groups, and 10 million light years span about 50 galaxies and brings us to the edge of what's called the Local Group.
Galaxy groups cluster into superclusters. We're part of the [Laniakea Supercluster](https://www.space.com/27016-galaxy-supercluster-laniakea-milky-way-home.html), which spans about 100,000 galaxies and 500 million light years.
For any appreciable expansion (redshift 0.1) you need at least a billion light years. It's something that happens in the voids between superclusters, and doesn't become really pronounced until you're halfway across the observable universe (redshift 1, 7-8 billion light years as measured in light travel time).
For the "raisins in a loaf" analogy, I think it's not too wrong if you think of the raisins as superclusters rather than individual galaxies. Note that although the dough expands in a baking loaf, individual raisins do not, because there are other forces at work that hold them together. | Just as molecules in the bread have random motion due to heat, galaxies have random motion due to variations in the initial state of the universe. For galaxies that are close by, those variations are smaller than the Hubble expansion, and the Hubble expansion is simply a *general trend*; object that are farther away from us tend to, *on average*, be moving away from us at higher speed, but individual objects can still be moving towards us.
According to [this site](http://w.astro.berkeley.edu/~mwhite/darkmatter/hubble.html), the Hubble constant is "around 70 kilometers per second for every megaparsec in distance". According to [wikipedia](https://en.wikipedia.org/wiki/Andromeda_Galaxy), Andromeda is "780 kiloparsecs" away. Multiplying those together, we get that Andromeda's movement due to the Hubble expansion should be about 5 km/sec. Wikipedia also says that "The Andromeda Galaxy is approaching the Milky Way at about 110 kilometres per second". That means that Andromeda's motion due to Hubble expansion is about 4% of its total movement. Andromeda has so much velocity relative to Earth that the Hubble expansion simply gets drowned out. |
314,736 | In the [c++](https://stackoverflow.com/questions/tagged/c%2b%2b "show questions tagged 'c++'") queue (readers should have some minimal background), I stumbled over [this question](https://stackoverflow.com/questions/34794502/c-how-to-pass-a-name-to-the-constructor-of-base-class).
The answer how to fix the questions primary concern is pretty simple:
>
> Make the symbols of parameter and member variable unambiguous.
>
>
>
The rest of the question (answers respectively) tends to go into a discussion of how to do that ***the best way***, which is clearly *opinion based*.
Would it be a right action to close vote this question for the above stated reason? | 2016/01/14 | [
"https://meta.stackoverflow.com/questions/314736",
"https://meta.stackoverflow.com",
"https://meta.stackoverflow.com/users/1413395/"
] | I see no opinion based wording in that question. Answers are going to have an element of opinion no matter what you do, that is allowed. What isn't allowed is asking for opinions. Even then, if the opinion based wording can be removed from a question and you end up with a "How do I do X" question, then you should do that.
I save my "Primarily Opinion Based" close votes for questions that propose one or more things, then ask which one is better, as well as other such questions that cannot be edited into an on-topic question without replacing the entire quest. | It's important that there be objective criteria by which you can determine if an answer has successfully answered the question. Questions that don't have this are "Primarily opinion based".
In your example one can objectively state whether the proposed solution fixes the problem or not.
For *every* problem, there is going to be some level of subjectivity in determining not *if* an answer answers the question, but *how well* it answers it. It will *always* be a matter of opinion which of two correct answers is *better*. This question is not at all unique in that regard. This is entirely expect, and entirely appropriate. |
13,552,405 | When passing an object as an argument for a method, all changes that happen to the argument inside the method, affect the "original" object as well. That's because the argument is a reference to the object.
But I also want to do the same with variables- I want all changes that happen inside the method to affect the "original" variable. But I don't know how. I want to do this, because some times more than one local variables need to be processed in the same way.
How can I pass a reference to a variable as an argument for a method? | 2012/11/25 | [
"https://Stackoverflow.com/questions/13552405",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/872902/"
] | There is no other choice than to store the variable inside an object, and to pass the object. All arguments are passed by value in Java.
The object can be `this` (i.e. the variable is in fact a field of the current object). | Can you clarify what you mean by the word "variable"? Do you mean a local reference inside the method, a primitive that's passed in, or something else?
Java references and primitives are passed by value. You cannot alter them, no matter how much you may want to. |
182,754 | I've been doing some research on design choices in online communities, and I'm looking for some examples of design changes, events, feature additions (or subtractions), or policy changes that might have had an exogenous effect on user behavior on SO?
I realize a similar question was asked about three years ago:
[What events/policy changes etc. in SO have exogenously manipulated things like views, answers, votes etc.?](https://meta.stackexchange.com/questions/42396/what-events-policy-changes-etc-in-so-have-exogenously-manipulated-things-like-v)
I'm looking for either updated examples, or possibly even things that were changed more than once.
Just for a bit of context, one example of the types of changes I'm looking for comes from the previously linked post:
In June of 2009, low rep users (>500) were shown a "Please consider commenting" message after down voting a post or comment. I'm interested in seeing if that message actually had an effect on user behaviors.
Similar examples would be greatly appreciated. Thanks. | 2013/06/03 | [
"https://meta.stackexchange.com/questions/182754",
"https://meta.stackexchange.com",
"https://meta.stackexchange.com/users/223572/"
] | * The [review queues](https://meta.stackexchange.com/questions/139536/new-feature-community-review-tasks-now-in-beta) have been a resounding success overall, but they have come with side effects because some users game the system to get the associated badge. See [The current review system encourages fake reviews; some people upvote everything rather than actually fixing problems](https://meta.stackexchange.com/q/149621) The problem is currently being battled, mainly with "surprise reviews" testing whether the user is paying attention.
* There used to be an "[accept rate](https://meta.stackexchange.com/questions/16721/how-does-accept-rate-work/16729#16729)" shown in users' profiles. If that rate was low, others would pester the user about it, or even go as far as downvote their questions for solely that reason. For this reason, they [stopped displaying it publicly](https://meta.stackexchange.com/questions/136951/lets-stop-displaying-a-users-accept-rate) a couple months back.
* [Has the abolition of Flag Weight affected flagging activity?](https://meta.stackexchange.com/q/120599) "Flag Weight" was a metric used to determine the overall quality of a user's flagging activity. [Discussion](https://meta.stackexchange.com/questions/84859/we-dont-need-to-see-flag-weight)
In general, Stack Overflow is an example of how to *successfully* encourage desired user behaviour, so this list is a little unfair in that it shows mostly problematic examples - I guess those stick in one's mind most because they generated the most controversy... | One thing worth to mention is the addition of [review queues](https://meta.stackexchange.com/q/139536/152859) and [review badges](https://meta.stackexchange.com/q/147912/152859). This has greatly increased the amount of people spending their time reviewing.
From personal experience, until that change the suggested edits queue was never empty, having 50-200 items waiting for review. Since the change it's very rare to see more than 10 items in there waiting for review. |
257,204 | I often try to distinguish between immediate-feedback communication, such as talking in person, on the phone, or by instant message, and delayed-feedback communication, such as email. (Or at least, delayed in the sense that it's socially acceptable to not respond right away.)
I usually would say something like, "I'd prefer to discuss this in real-time," which usually gets the point across, but I'm wondering if there is a better way to describe this concept. ("Can we talk about this using an immediate-feedback medium?" sounds a little awkward.) | 2015/07/06 | [
"https://english.stackexchange.com/questions/257204",
"https://english.stackexchange.com",
"https://english.stackexchange.com/users/95901/"
] | In pedagogical terms, we talk about "synchronous" vs. "asyncronous" communication.
In synchronous communication, we're talking to each other at the same time; in asynchronous communication, you may not see what I'm saying as I'm saying it, and you may reply at a later time. | Good question. In some ways, you are suggesting "active feedback" rather than passive, though that is not a common term and it doesn't mean "asap".
Tech companies I have worked for also discuss a "positive handoff" which means reaching out to the person actively, such as via phone (I just emailed you the report) or in person (Here is the report) as opposed to a passive medium like email or a phone message. This is used for accountability purposes (I had a positive handoff of the contract with client X on 1/1/11, so he can't say he didn't know it was finished...) |
43,032,052 | I am building an app in react native that uses Auth0 for user authentication. I also use Auth0 to pull down an array of data from the user's metadata(JSON).
The app works perfectly in iOS, but in Android the array in the user's metadata is empty. Everything besides the array loads properly.
After testing, I have realized that the problem only occurs if the array is an array of objects. If I change it to an array of test strings, the array loads in Android.
Does anyone know why an array of objects in JSON data would load in iOS but not in Android? | 2017/03/26 | [
"https://Stackoverflow.com/questions/43032052",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/7100341/"
] | In short, yes. The program that starts the process owns the address space and can do whatever it likes. If your library has dangerous interactions with another process with more privileges that can lead to escalation, the other process needs its own defenses. Nothing prevents somebody from calling private methods or static functions in your library at all, and any method that might do could be circumvented. | >
> Couldn't one just specify the address to jump to by "guessing" in
> order to call private methods
>
>
>
Yes. But, if you don't trust the program, there are much worse things it could do. Simple solution: Do not execute programs you are not trusting.
>
> and possibly gain escalated privileges?
>
>
>
No. A library used by a process doesn't have more privileges than the process itself. |
43,032,052 | I am building an app in react native that uses Auth0 for user authentication. I also use Auth0 to pull down an array of data from the user's metadata(JSON).
The app works perfectly in iOS, but in Android the array in the user's metadata is empty. Everything besides the array loads properly.
After testing, I have realized that the problem only occurs if the array is an array of objects. If I change it to an array of test strings, the array loads in Android.
Does anyone know why an array of objects in JSON data would load in iOS but not in Android? | 2017/03/26 | [
"https://Stackoverflow.com/questions/43032052",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/7100341/"
] | >
> Couldn't one just specify the address to jump to by "guessing" in
> order to call private methods
>
>
>
Yes. But, if you don't trust the program, there are much worse things it could do. Simple solution: Do not execute programs you are not trusting.
>
> and possibly gain escalated privileges?
>
>
>
No. A library used by a process doesn't have more privileges than the process itself. | Of course this is possible, but there are mechanisms like ASLR, which impede any 'guessing'-method. Further, there is paging, which inhibits user-code from manipulating and executing the kernel's data and code, if you're talking about privilege escalation within the scope of operating systems. |
43,032,052 | I am building an app in react native that uses Auth0 for user authentication. I also use Auth0 to pull down an array of data from the user's metadata(JSON).
The app works perfectly in iOS, but in Android the array in the user's metadata is empty. Everything besides the array loads properly.
After testing, I have realized that the problem only occurs if the array is an array of objects. If I change it to an array of test strings, the array loads in Android.
Does anyone know why an array of objects in JSON data would load in iOS but not in Android? | 2017/03/26 | [
"https://Stackoverflow.com/questions/43032052",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/7100341/"
] | >
> Couldn't one just specify the address to jump to by "guessing" in
> order to call private methods
>
>
>
Yes. But, if you don't trust the program, there are much worse things it could do. Simple solution: Do not execute programs you are not trusting.
>
> and possibly gain escalated privileges?
>
>
>
No. A library used by a process doesn't have more privileges than the process itself. | Folks brought up in the eunuchs and windoze worlds have missed out on better designed systems. There are systems that explicitly manage shared libraries in order to cut down on their exploited. Such shared libraries would be INSTALLED by the system. In fact, the same installation would be used for programs to have elevated privilege. For example, a benign program like a process monitor that requires access to kernel data could be installed with privileges that the user would not have on his own. |
43,032,052 | I am building an app in react native that uses Auth0 for user authentication. I also use Auth0 to pull down an array of data from the user's metadata(JSON).
The app works perfectly in iOS, but in Android the array in the user's metadata is empty. Everything besides the array loads properly.
After testing, I have realized that the problem only occurs if the array is an array of objects. If I change it to an array of test strings, the array loads in Android.
Does anyone know why an array of objects in JSON data would load in iOS but not in Android? | 2017/03/26 | [
"https://Stackoverflow.com/questions/43032052",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/7100341/"
] | In short, yes. The program that starts the process owns the address space and can do whatever it likes. If your library has dangerous interactions with another process with more privileges that can lead to escalation, the other process needs its own defenses. Nothing prevents somebody from calling private methods or static functions in your library at all, and any method that might do could be circumvented. | Of course this is possible, but there are mechanisms like ASLR, which impede any 'guessing'-method. Further, there is paging, which inhibits user-code from manipulating and executing the kernel's data and code, if you're talking about privilege escalation within the scope of operating systems. |
43,032,052 | I am building an app in react native that uses Auth0 for user authentication. I also use Auth0 to pull down an array of data from the user's metadata(JSON).
The app works perfectly in iOS, but in Android the array in the user's metadata is empty. Everything besides the array loads properly.
After testing, I have realized that the problem only occurs if the array is an array of objects. If I change it to an array of test strings, the array loads in Android.
Does anyone know why an array of objects in JSON data would load in iOS but not in Android? | 2017/03/26 | [
"https://Stackoverflow.com/questions/43032052",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/7100341/"
] | In short, yes. The program that starts the process owns the address space and can do whatever it likes. If your library has dangerous interactions with another process with more privileges that can lead to escalation, the other process needs its own defenses. Nothing prevents somebody from calling private methods or static functions in your library at all, and any method that might do could be circumvented. | Folks brought up in the eunuchs and windoze worlds have missed out on better designed systems. There are systems that explicitly manage shared libraries in order to cut down on their exploited. Such shared libraries would be INSTALLED by the system. In fact, the same installation would be used for programs to have elevated privilege. For example, a benign program like a process monitor that requires access to kernel data could be installed with privileges that the user would not have on his own. |
47,333,598 | I think at **L2** it will be **ether type** and **destination MAC address**.
at **L3** it can be **protocol field** and **Destination IP Address**.
I want to know what are the other fields by which we can differentiate between control and data packet. | 2017/11/16 | [
"https://Stackoverflow.com/questions/47333598",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/7522819/"
] | @Anupam Thakur: In pure L2 infrastructure, on receiving frame, node does the bridge-table/l2-table/cam lookup based on destination mac address. For different BPDUs (almost always reserved multicast mac dst addresses, few exceptions beyond the scope of this question) wherever required cam table is programmed with punt path to control-plane module (/also). Note, punt path doesn't distinguish between different protocols. It's job is to just push the packet in Q towards control-plane module. When cp module receives such packet, based on ethertype or LLC content it determines the further protocol processing of the packet. | "Router Alert Option" in IP header can also force packet to be punted to Control Plane, even though it is not destined for recipient device. (i.e. transit node) |
32,247,394 | I am using angular js [client side] and node js [for backend].
Which is more efficient and advisable when generating contents as csv,
a. writing the CSV generation, setting of fields [after fetching from backend node js] in client side [using angular or javascript] or
b. getting the CSV file as response from the backend?
Please let me know the pros and cons of both. | 2015/08/27 | [
"https://Stackoverflow.com/questions/32247394",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/1468162/"
] | Assumed selected client-side CSV creation.
**Pros :**
* Choosing client-side csv creation; less tiring backend.
* If client has already data it will be useful, if back-end not need to response CSV file.
**Cons :**
* If user has only ancient browser that time, he can't create CSV file.
* Your back-end will tire more.
So technically in all subjects(about performance etc.) developers can dive deeper. These are the basic pros and cons. Also pros and cons can be changed by other requirements or logics. | if the server just fetches data from db I guess it's better to put the `.csv` creation load to the client side; in this way server just sends the raw data to the client browser would do the processing and file creation. |
507,859 | I have a problem: users are connecting to our terminal server via remote desktop, and then creating VPN connections from it to another server, which then changes the networking and stops all ability to remote desktop into the server.
We'd like to be able to remove a standard user's ability to create or connect VPN connections from the windows 2008 R2 terminal server, and to this end we created GPOs which are supposed to do just this (User Configuration \ Administrative Templates \ Network \ Network Connections), however it's still possible for users to create connections :( Loopback processing is enabled, and RSoP shows the policies applying to the user on that server, so...
As a temporary workaround I've set the IP Helper Service (which seems to be required to initiate the VPN connection, or at least to do the local routing modifications) to startup type "Disabled". It doesn't seem to be required for anything else we need on that server, though I don't know enough about the service to be sure.
Am I doing something obviously wrong? Has anyone got any good suggestions on how I can achieve this? Or is what I'm trying to do the wrong thing for some reason? | 2013/05/15 | [
"https://serverfault.com/questions/507859",
"https://serverfault.com",
"https://serverfault.com/users/82056/"
] | This might seen severe, but, if they don't need access to the control panel, I would suggest disabling user access to the entire control panel. I use this on a 2003 Terminal Server (yes, I know, not the same version). Basically this prevents the users from making any changes to the machine. Odds are, they probably don't need to anyways and are just mucking up the Terminal Server.
User/Policies/Control Panel/ Prohibit access to control panel
Though I am not sure if this will work in your situation or not as it is dictated by how much access the users need when they RDP in.
Also, there is a GP that will override the TCP/IP advanced settings if the user is an administrator. You might want to check and make sure the users didn't make themselves local admins. They might be overriding the policy that way. | When the user creat VPN connection, do they **untick** the config **Use default gateway in the remote network**. If you don't untick it, therefore all traffic on the remote server will pass through the gateway at VPN site, that make the remote desktop failed.
You can change it by
>
> * Right click VPN connection, properties
> * In Networking tab, select IPv4, properties
> * Click Advanced, untick "Use default gateway in the remote network"
>
>
> |
42,673 | While browsing i found an interesting [tool](http://sourceforge.net/projects/mac-on-linux/) in sourceforge.net
it says
>
> Mac-on-Linux is a Linux/PPC program that virtualizes Mac OS or Mac OS X in Linux.
>
>
>
Is it legal In india? | 2012/03/06 | [
"https://apple.stackexchange.com/questions/42673",
"https://apple.stackexchange.com",
"https://apple.stackexchange.com/users/19432/"
] | On Apple hardware, yes - [as of OSX Lion / Lion Server](http://www.macrumors.com/2011/07/01/os-x-lion-allows-running-multiple-copies-on-the-same-machine-virtualization/). Otherwise, no - it's a violation of the EULA. | It's a violation if its not on apple hardware. For the record that is for OS X ppc only. It doesn't work with anything recent at all. |
42,673 | While browsing i found an interesting [tool](http://sourceforge.net/projects/mac-on-linux/) in sourceforge.net
it says
>
> Mac-on-Linux is a Linux/PPC program that virtualizes Mac OS or Mac OS X in Linux.
>
>
>
Is it legal In india? | 2012/03/06 | [
"https://apple.stackexchange.com/questions/42673",
"https://apple.stackexchange.com",
"https://apple.stackexchange.com/users/19432/"
] | On Apple hardware, yes - [as of OSX Lion / Lion Server](http://www.macrumors.com/2011/07/01/os-x-lion-allows-running-multiple-copies-on-the-same-machine-virtualization/). Otherwise, no - it's a violation of the EULA. | Thanks i got solution from [askubuntu](https://askubuntu.com/questions/109999/mac-on-linux-is-it-legal)
>
> It's against the EULA, but in general, each provision of a EULA is
> treated separately (at least, according to Wikipedia), i.e. so a part
> of a EULA might be found to be legally non-binding. The legality
> depends on where you are, but if you're in the US, I would guess it's
> illegal because of the DMCA. Apple sued a clone manufacturer(Psystar)
> several years ago for selling machines with OS X installed on them.
> They sued under several different legal reasons, but one of them was
> that Apple uses encryption methods protected under the DMCA to keep OS
> X from being installed on non-Apple hardware. The court found that
> indeed the DMCA was violated and Apple won.
> via [cs](https://askubuntu.com/users/43660/c-s)
>
>
> |
42,673 | While browsing i found an interesting [tool](http://sourceforge.net/projects/mac-on-linux/) in sourceforge.net
it says
>
> Mac-on-Linux is a Linux/PPC program that virtualizes Mac OS or Mac OS X in Linux.
>
>
>
Is it legal In india? | 2012/03/06 | [
"https://apple.stackexchange.com/questions/42673",
"https://apple.stackexchange.com",
"https://apple.stackexchange.com/users/19432/"
] | On Apple hardware, yes - [as of OSX Lion / Lion Server](http://www.macrumors.com/2011/07/01/os-x-lion-allows-running-multiple-copies-on-the-same-machine-virtualization/). Otherwise, no - it's a violation of the EULA. | It is a violation but it runs so crappy if your using VirtualBox anyway (also no guest additions) that you couldn't do anything worth while in it anyway.
there is alot of graphics problems and it makes the OS pretty much unusable. |
42,673 | While browsing i found an interesting [tool](http://sourceforge.net/projects/mac-on-linux/) in sourceforge.net
it says
>
> Mac-on-Linux is a Linux/PPC program that virtualizes Mac OS or Mac OS X in Linux.
>
>
>
Is it legal In india? | 2012/03/06 | [
"https://apple.stackexchange.com/questions/42673",
"https://apple.stackexchange.com",
"https://apple.stackexchange.com/users/19432/"
] | It's a violation if its not on apple hardware. For the record that is for OS X ppc only. It doesn't work with anything recent at all. | It is a violation but it runs so crappy if your using VirtualBox anyway (also no guest additions) that you couldn't do anything worth while in it anyway.
there is alot of graphics problems and it makes the OS pretty much unusable. |
42,673 | While browsing i found an interesting [tool](http://sourceforge.net/projects/mac-on-linux/) in sourceforge.net
it says
>
> Mac-on-Linux is a Linux/PPC program that virtualizes Mac OS or Mac OS X in Linux.
>
>
>
Is it legal In india? | 2012/03/06 | [
"https://apple.stackexchange.com/questions/42673",
"https://apple.stackexchange.com",
"https://apple.stackexchange.com/users/19432/"
] | Thanks i got solution from [askubuntu](https://askubuntu.com/questions/109999/mac-on-linux-is-it-legal)
>
> It's against the EULA, but in general, each provision of a EULA is
> treated separately (at least, according to Wikipedia), i.e. so a part
> of a EULA might be found to be legally non-binding. The legality
> depends on where you are, but if you're in the US, I would guess it's
> illegal because of the DMCA. Apple sued a clone manufacturer(Psystar)
> several years ago for selling machines with OS X installed on them.
> They sued under several different legal reasons, but one of them was
> that Apple uses encryption methods protected under the DMCA to keep OS
> X from being installed on non-Apple hardware. The court found that
> indeed the DMCA was violated and Apple won.
> via [cs](https://askubuntu.com/users/43660/c-s)
>
>
> | It is a violation but it runs so crappy if your using VirtualBox anyway (also no guest additions) that you couldn't do anything worth while in it anyway.
there is alot of graphics problems and it makes the OS pretty much unusable. |
32,900 | Apple [state](http://support.apple.com/kb/TS3554):
>
> Only Apple retail stores or Apple Authorized Service Providers can unlock these computers protected by a firmware password.
>
>
> If you cannot remember the firmware password for your MacBook Air, schedule a service appointment with either an Apple Retail Store or an Apple Authorized Service Provider. If you plan to visit an Apple Retail store please make a reservation at the Genius Bar using <http://www.apple.com/retail/geniusbar/> (available in some countries only).
>
>
>
What do such engineers do to recover or reset the firmware password? I long ago forgot my MacBook Air's firmware password, but haven't needed it until now. I'm quite comfortable opening up my laptop, even if it voids my warranty, but cannot find any information on how the reset is performed.
With older models, one needed only to change the hardware configuration (e.g. amount of installed RAM) and then reset PRAM three times to force a reset of the firmware password. I presume this is not possible because the MacBook Air has no user-removable parts (since RAM is soldered to the motherboard, for example) but it is not clear what alternatives exist.
Apple probably require all those in the know to keep it to themselves, but no doubt some hacker has figured it out. I'd be grateful if they would share! | 2011/12/03 | [
"https://apple.stackexchange.com/questions/32900",
"https://apple.stackexchange.com",
"https://apple.stackexchange.com/users/8331/"
] | It's not the sort of thing a hacker can easily "figure out" -- as I understand it, the procedure involves calling Apple's Service Provider Support, proving you're an authorized service provider, reading them a code from the computer and typing in the countercode they give you...
Mind you, that doesn't mean you're out of luck. If you have admin access, and a 10.6.x install DVD or USB key for your Mac, [this MacEnterprise posting](http://groups.google.com/group/macenterprise/browse_thread/thread/3092c51a73d064c4?pli=1) has instructions to use setregproptool to enable/disable the firmware password. If you have Lion, it's probably on the recovery partition somewhere, but I haven't investigated. | An AASP does by no means 'bypass' the Firmware Password, it is simply removed with a tool specific for that exact machine.
A specific Key combination is used on the Firmware Password screen on the Mac that needs it removed, this presents a unique Hash code on the screen of the Mac.
Generally this Hash code needs to be sent to Apple Technical Service Provider Support, they will send the AASP the unique 'file' that is used to remove the password from that specific machine.
There is no 'Home' solution yet for the removal of these kind of passwords on updated models, an AASP or a Apple Store can do it for you. |
84,435 | In *Harry Potter and the Deathly Hallows: Parts [1](http://www.imdb.com/title/tt0926084/?ref_=nv_sr_8) & [2](http://www.imdb.com/title/tt1201607/?ref_=nv_sr_3)*, and all movies, Voldemort is known to have seven horcruxes before he can die...all seven must be destroyed first.
Voldemort should know what his horcruxes are, so if he knew that Harry was one of them, then why did he kill Harry instead of keeping him alive? Assuming Voldemort wanted to live.
So harry survived the second hit, so really the horcrux being Harry should not have lived in order to kill the horcrux.
*Why did Voldemort kill Harry if he knew Harry was a Horcrux?* | 2018/01/02 | [
"https://movies.stackexchange.com/questions/84435",
"https://movies.stackexchange.com",
"https://movies.stackexchange.com/users/43257/"
] | After Voldemort split his soul six times, his soul became too unstable. When he tried to kill baby Harry, his mother sacrificed herself to save Harry, creating a shield of love for Harry.
In that situation, he can't be able to kill Harry. Voldermort's curse backfired and hurt him. He also can't be killed because he already tore his soul into six fragments. He just vanished and that unstable soul of him finds his new place in only one living thing in that room that is **Harry**.
So Harry is the Horcrux created by Voldemort *unintentionally*. So he didn't know that Harry is also a Horcrux.
*Note: When Voldemort tried to kill Harry again, Harry owns the Deathly Hallows, hence he can't be killed that time. Also it affected only Voldemort's soul within Harry Potter's, so this way the last Horcrux is destroyed.* | Whether he knew or not is irrelevant. He knew the prophecy said that Harry would have the power to kill him, and that is the main driving force behind his desire to kill Harry.
He knew there was some connection between him and Harry, and likely the connection was similar to Nagini. He could possess Harry (only did it very briefly at the end of #5) just as he could possess Nagini. Given that, how could he not know? He must have stopped to think about why they have that connection. Dumbledore was able to make that deduction, why can't Voldemort?
I think ultimately, he thinks he can make more Horcruxes if necessary. He doesn't know the fate of the diadem, and he believes he can protect Nagini. He only needs **one** horcrux, but he chooses to split his soul into 7 thinking it is lucky. |
84,435 | In *Harry Potter and the Deathly Hallows: Parts [1](http://www.imdb.com/title/tt0926084/?ref_=nv_sr_8) & [2](http://www.imdb.com/title/tt1201607/?ref_=nv_sr_3)*, and all movies, Voldemort is known to have seven horcruxes before he can die...all seven must be destroyed first.
Voldemort should know what his horcruxes are, so if he knew that Harry was one of them, then why did he kill Harry instead of keeping him alive? Assuming Voldemort wanted to live.
So harry survived the second hit, so really the horcrux being Harry should not have lived in order to kill the horcrux.
*Why did Voldemort kill Harry if he knew Harry was a Horcrux?* | 2018/01/02 | [
"https://movies.stackexchange.com/questions/84435",
"https://movies.stackexchange.com",
"https://movies.stackexchange.com/users/43257/"
] | After Voldemort split his soul six times, his soul became too unstable. When he tried to kill baby Harry, his mother sacrificed herself to save Harry, creating a shield of love for Harry.
In that situation, he can't be able to kill Harry. Voldermort's curse backfired and hurt him. He also can't be killed because he already tore his soul into six fragments. He just vanished and that unstable soul of him finds his new place in only one living thing in that room that is **Harry**.
So Harry is the Horcrux created by Voldemort *unintentionally*. So he didn't know that Harry is also a Horcrux.
*Note: When Voldemort tried to kill Harry again, Harry owns the Deathly Hallows, hence he can't be killed that time. Also it affected only Voldemort's soul within Harry Potter's, so this way the last Horcrux is destroyed.* | I am currently rereading the novels after watching The Fantastic Beasts movies and noticed that the first answer is wrong. First of all, Voldemort didn’t kill Harry because he inadvertently made a backup of Harry by taking his blood in Goblet of Fire. That is why Dumbledore told Snape to tell Harry that it is very important that Voldemort, and only Voldemort could “kill” Harry, because the magic that bound them together. Also it is wrong because although Harry is the true owner of the Deathly Hallows at the time Voldemort attempts to kill him, Voldemort is still in possession of the Elder Wand, therefore he has not yet become the Master of Death, evidenced by the fact that he only saw shadows of his family walking up to his sacrifice. |
84,435 | In *Harry Potter and the Deathly Hallows: Parts [1](http://www.imdb.com/title/tt0926084/?ref_=nv_sr_8) & [2](http://www.imdb.com/title/tt1201607/?ref_=nv_sr_3)*, and all movies, Voldemort is known to have seven horcruxes before he can die...all seven must be destroyed first.
Voldemort should know what his horcruxes are, so if he knew that Harry was one of them, then why did he kill Harry instead of keeping him alive? Assuming Voldemort wanted to live.
So harry survived the second hit, so really the horcrux being Harry should not have lived in order to kill the horcrux.
*Why did Voldemort kill Harry if he knew Harry was a Horcrux?* | 2018/01/02 | [
"https://movies.stackexchange.com/questions/84435",
"https://movies.stackexchange.com",
"https://movies.stackexchange.com/users/43257/"
] | Whether he knew or not is irrelevant. He knew the prophecy said that Harry would have the power to kill him, and that is the main driving force behind his desire to kill Harry.
He knew there was some connection between him and Harry, and likely the connection was similar to Nagini. He could possess Harry (only did it very briefly at the end of #5) just as he could possess Nagini. Given that, how could he not know? He must have stopped to think about why they have that connection. Dumbledore was able to make that deduction, why can't Voldemort?
I think ultimately, he thinks he can make more Horcruxes if necessary. He doesn't know the fate of the diadem, and he believes he can protect Nagini. He only needs **one** horcrux, but he chooses to split his soul into 7 thinking it is lucky. | I am currently rereading the novels after watching The Fantastic Beasts movies and noticed that the first answer is wrong. First of all, Voldemort didn’t kill Harry because he inadvertently made a backup of Harry by taking his blood in Goblet of Fire. That is why Dumbledore told Snape to tell Harry that it is very important that Voldemort, and only Voldemort could “kill” Harry, because the magic that bound them together. Also it is wrong because although Harry is the true owner of the Deathly Hallows at the time Voldemort attempts to kill him, Voldemort is still in possession of the Elder Wand, therefore he has not yet become the Master of Death, evidenced by the fact that he only saw shadows of his family walking up to his sacrifice. |
113,877 | I'm in the process of changing a database server at my company from Windows 2000/Sql Server 2000 to a Windows 2003 R2/Sql Server 2005 now. It holds 30 databases, each of the databases is about 7gb in size, but one of the is 30gb. And now I'm wondering if I should use the opportunity to use filegroups on this database.
But I've never used it before, and I don't know the content of the database that good. But it's a economy system, so I would think that over the last 8 years of production, it holds lots of historical "read-only" information.
Can anyone give me some hints and tips on if I should split it or not?
I do have 2 seperate disks now, one for log files and one for the databases.
I'd appreciate if someone could give me some input :) | 2010/02/17 | [
"https://serverfault.com/questions/113877",
"https://serverfault.com",
"https://serverfault.com/users/35185/"
] | You want to split the database into multiple filegroups, or add multiple files to the existing primary filegroup?
In the first case you would need to move object (tables, indexes) into the newly added filegroup, otherwise it will stay empty. Doing so requires you to have very good understanding of the patterns of use of said objects so you can determine which objects goes where. The advantage after that will be that you'll be able to allocate filegroups to separate IO paths (separate disks/LUNs) according to how they are accessed. Another advantage is that you can manage backup/restore more granularity, allowing you to do piece-meal restores and allowing you to to individual filegroup backups. I would say that allocating filegroups in a database is a *design* time decision and for you is a little late now.
Second case you simply add more files to the PRIMARY filegroup in order to spread the IO across multiple disks. Unless you actually *do* have IO problems, and you do have multiple IO paths (ie. separate disks/arrays/luns to place the files onto), there is zero advantage in adding multiple files. You may run into advice recommending splinting the database into N files of equal size where N is the number of CPU cores, but that advice is obsolete as SQL 2005/2008 deal with the SGAM/GAM allocation contention much better than SQL 2000 and no longer require the split.
From your description of the problem and environment, I frankly see no reason to do any split: you are not going to make any fancy restore plan to allow for piece-meal restore (and besides its only 30Gb, which is rather small), and you have only one disk anyway so multiple files bring no advantage. | I don't think you'll gain much performance if you split up your database into filegroups because you've only two dedicated disks and you already need one for your translogs.
I wouldn't split it. |
113,877 | I'm in the process of changing a database server at my company from Windows 2000/Sql Server 2000 to a Windows 2003 R2/Sql Server 2005 now. It holds 30 databases, each of the databases is about 7gb in size, but one of the is 30gb. And now I'm wondering if I should use the opportunity to use filegroups on this database.
But I've never used it before, and I don't know the content of the database that good. But it's a economy system, so I would think that over the last 8 years of production, it holds lots of historical "read-only" information.
Can anyone give me some hints and tips on if I should split it or not?
I do have 2 seperate disks now, one for log files and one for the databases.
I'd appreciate if someone could give me some input :) | 2010/02/17 | [
"https://serverfault.com/questions/113877",
"https://serverfault.com",
"https://serverfault.com/users/35185/"
] | You want to split the database into multiple filegroups, or add multiple files to the existing primary filegroup?
In the first case you would need to move object (tables, indexes) into the newly added filegroup, otherwise it will stay empty. Doing so requires you to have very good understanding of the patterns of use of said objects so you can determine which objects goes where. The advantage after that will be that you'll be able to allocate filegroups to separate IO paths (separate disks/LUNs) according to how they are accessed. Another advantage is that you can manage backup/restore more granularity, allowing you to do piece-meal restores and allowing you to to individual filegroup backups. I would say that allocating filegroups in a database is a *design* time decision and for you is a little late now.
Second case you simply add more files to the PRIMARY filegroup in order to spread the IO across multiple disks. Unless you actually *do* have IO problems, and you do have multiple IO paths (ie. separate disks/arrays/luns to place the files onto), there is zero advantage in adding multiple files. You may run into advice recommending splinting the database into N files of equal size where N is the number of CPU cores, but that advice is obsolete as SQL 2005/2008 deal with the SGAM/GAM allocation contention much better than SQL 2000 and no longer require the split.
From your description of the problem and environment, I frankly see no reason to do any split: you are not going to make any fancy restore plan to allow for piece-meal restore (and besides its only 30Gb, which is rather small), and you have only one disk anyway so multiple files bring no advantage. | [Here is information on filegroups](http://msdn.microsoft.com/en-us/library/ms187087.aspx). They really only improve performance if you located them on separate drives. The other use of filegroups is to isolate read-only tables and be able to backup only active filegroups. |
120,061 | I've checked a number of the other questions but not finding the specific answer I need.
I'm wiring a 100 AMP garage sub-panel from a 200 AMP main in my house. I plan to install a 100 AMP circuit breaker in the house panel. The run to the garage, lug to lug is ~65' and I have to bury the cable to meet code and am going to put it in Sched 40 conduit.
I'm thinking I can use 1/0-1/0-1/0-4 AL but since it needs to go underground am confused about SER vs MHF and hoping I can find a solution that doesn't require changing cable to go from underground outside to inside the house and garage. The NEC chart isn't particularly helpful to me.
Also, what is my option for copper instead? | 2017/07/24 | [
"https://diy.stackexchange.com/questions/120061",
"https://diy.stackexchange.com",
"https://diy.stackexchange.com/users/73450/"
] | Your options are a minimum of #1 aluminum or #3 copper.
Since it's only 65 feet I wouldn't upsize it for voltage drop.
You don't need service entrance or direct burial type cable if you are running conduit underground you can use type THWN wire. Individual wires not cable. If you don't want to run conduit you can buy direct burial type wire like You are talking about.
Good luck and stay safe! | Since the entire route is conduit, you want to run this in single-conductor THWN wire. Generally multiconductor cable is less desirable in conduit because it is difficult to wield.
When laying out conduit, make sure to put pulling points in as many corners as possible. Otherwise the pull can be rather difficult with heavy conductors.
In any case, you must still use outdoor rated cable, so SER is out of the question. And you must run 4 conductors. (Unless you really want 120-only or 240-only, but you don't.)
Use aluminum. Yes, really. You may have heard the bad press about copper and aluminum wiring interacting badly and starting house fires. That is due to dissimilar metals corrosion and thermal (expansion) issues; copper lugs do not like aluminum. (The reverse is untrue). Large wires are expected to be aluminum because copper is rather expensive. As such, the lugs are aluminum. The trouble with Copper is it will have corrosion/thermal issues with the lugs. *Isn't that what we're trying to avoid?* |
137,065 | If the external memory (1 MB) in 8086 based system is segmented into code, data, stack and extra which are all 64 kB, what do we do with the rest of the memory? Does it go waste? | 2014/11/03 | [
"https://electronics.stackexchange.com/questions/137065",
"https://electronics.stackexchange.com",
"https://electronics.stackexchange.com/users/24627/"
] | In the 8086 each segment is, yes, 64KiB. Those segments can move though.
You set a "segment pointer" which defines where a segment starts. It acts as an address offset, which is added to the internal 16-bit address of the program counter (or other indexing register).
Changing the segment pointers is a trivial matter, so although you can only access 64KiB at a time, you can move that 64KiB window around at will to access the whole 1MiB of memory space. | Also note that since the 8086 had a 20-bit addressing scheme, those segment offsets overlapped every 16 bytes.
For instance if you had a CS at 0x0010 and a SS at 0x0011, [CS]:[0x0010] = [SS]:[0x0000]
see: <http://en.wikipedia.org/wiki/Intel_8086#Segmentation> |
42,259 | How should I go about determining the quality of an undergraduate program that is just starting given that the field in general is relatively young?
To be more specific, I am considering a new cyber security program at the University of Tampa. It starts Fall 2015. There aren't many other programs i can compare to, or accreditations to look for.
How can I measure the quality of a program that hasn't even started? | 2015/03/24 | [
"https://academia.stackexchange.com/questions/42259",
"https://academia.stackexchange.com",
"https://academia.stackexchange.com/users/32172/"
] | My best advice would be to look at the faculty who are signed up to teach the program. A program is likely to be good if:
1. The faculty are of scientific high quality in their field, and
2. The faculty are also generally well-regarded in their student evaluations
The first years of any new educational venture are likely to have a lot of glitches, but also have some compensating advantages: it is also the time when a program is likely to be most flexible and when the faculty are likely to be investing especially hard in their students as they try to get the program off the ground. | In addition to the previous answer, I would suggest looking at what other programs share the same courses. Usually a new degree program will share a fair number of required courses, especially the introductory subjects, with existing majors. If it turns out that 70% or so of the course requirements are shared with a reputable CS degree (for example), then you will probably get a good grounding at least. |
646,726 | I do know that there are at least two types of yellow light: a light of a single wavelength of ~580 nm and a combination of green light and red light. (Technically, there could be more yellow light.) And the following two figures are making me confused.
[](https://i.stack.imgur.com/NThcwm.png)
[](https://i.stack.imgur.com/w56LDm.png)
Are red and green light reflected from banana? What wavelengths of white light does a banana reflect? | 2021/06/20 | [
"https://physics.stackexchange.com/questions/646726",
"https://physics.stackexchange.com",
"https://physics.stackexchange.com/users/304554/"
] | The reflectance of solid and liquid substances usually
has a broad spectrum, and bananas are no exception here.
Only gases have a line spectrum.
Here is the reflectance spectrum of ripe (i.e. yellow)
and unripe (i.e. green) bananas.
[](https://i.stack.imgur.com/B4vH5.jpg)
(image from "[Food chemistry - Prediction of banana color and firmness
using a novel wavelengths selection method of hyperspectral imaging](https://doi.org/10.1016/j.foodchem.2017.10.079)")
You see, ripe bananas reflect light beginning from green (~ 520 nm)
through yellow, orange, red, and extending to infrared. | Narrow-band yellow is indeed [metameric](https://en.wikipedia.org/wiki/Metamerism_(color)) to some wavelength combinations like green/red, green/yellow/orange/red etc.. But if you see a yellow-reflecting surface, you can be sure\* that its reflectance spectrum is not just a narrow-band yellow. It must be a broadband green/yellow/orange/red reflector. If you find an actual surface that has a narrow peak of reflectance at the yellow wavelength and nothing else, this surface will look dark brown, because it reflects only the tiny portion of light incident on it, compared to a broadband reflector.
So, the short answer is that the figure on the right is grossly misleading, and a banana reflects much more wavelengths than just the yellows.
---
\*Unless it's fluorescing with a narrow-band yellow, which would be unusual |
646,726 | I do know that there are at least two types of yellow light: a light of a single wavelength of ~580 nm and a combination of green light and red light. (Technically, there could be more yellow light.) And the following two figures are making me confused.
[](https://i.stack.imgur.com/NThcwm.png)
[](https://i.stack.imgur.com/w56LDm.png)
Are red and green light reflected from banana? What wavelengths of white light does a banana reflect? | 2021/06/20 | [
"https://physics.stackexchange.com/questions/646726",
"https://physics.stackexchange.com",
"https://physics.stackexchange.com/users/304554/"
] | The reflectance of solid and liquid substances usually
has a broad spectrum, and bananas are no exception here.
Only gases have a line spectrum.
Here is the reflectance spectrum of ripe (i.e. yellow)
and unripe (i.e. green) bananas.
[](https://i.stack.imgur.com/B4vH5.jpg)
(image from "[Food chemistry - Prediction of banana color and firmness
using a novel wavelengths selection method of hyperspectral imaging](https://doi.org/10.1016/j.foodchem.2017.10.079)")
You see, ripe bananas reflect light beginning from green (~ 520 nm)
through yellow, orange, red, and extending to infrared. | In simplified terms, the left hand image is true of a pure white or chrome banana and is not correct. Right-hand image is correct, of all wavelengths reflected, 580nm reflects the most and comparatively speaking the other wavelengths are partially absorbed.
The simplification of the diagrams requires you see them in conceptual terms. Technically, neither are accurate. |
646,726 | I do know that there are at least two types of yellow light: a light of a single wavelength of ~580 nm and a combination of green light and red light. (Technically, there could be more yellow light.) And the following two figures are making me confused.
[](https://i.stack.imgur.com/NThcwm.png)
[](https://i.stack.imgur.com/w56LDm.png)
Are red and green light reflected from banana? What wavelengths of white light does a banana reflect? | 2021/06/20 | [
"https://physics.stackexchange.com/questions/646726",
"https://physics.stackexchange.com",
"https://physics.stackexchange.com/users/304554/"
] | The reflectance of solid and liquid substances usually
has a broad spectrum, and bananas are no exception here.
Only gases have a line spectrum.
Here is the reflectance spectrum of ripe (i.e. yellow)
and unripe (i.e. green) bananas.
[](https://i.stack.imgur.com/B4vH5.jpg)
(image from "[Food chemistry - Prediction of banana color and firmness
using a novel wavelengths selection method of hyperspectral imaging](https://doi.org/10.1016/j.foodchem.2017.10.079)")
You see, ripe bananas reflect light beginning from green (~ 520 nm)
through yellow, orange, red, and extending to infrared. | I would like to address something the other answers do not mention, that is, what really is happening at the quantum level when we say "the banana is reflecting". When photons (I am only talking about visible wavelength light) are incident on the banana, two things can happen:
1. absorption and re-emission. Most of the photons that get absorbed by the banana, will either heat up the banana peel (transfer their kinetic energies to the molecules vibrational, rotational, and translational energies), or will be absorbed and re-emitted (through electronic transitions), and these photons will be part of the emission spectrum we can see in the other answers. Please note that even in this case, the angle of these photons is random, regardless of the incident angle. It is very important to understand that in this case the photons cease to exist, and new photons are re-emitted.
2. diffuse reflection.
[](https://i.stack.imgur.com/WkfMI.gif)
<https://en.wikipedia.org/wiki/Diffuse_reflection>
These photons will be another part of the emission spectrum that you can see in the other answers. Please note that the angle of these photons will be random, regardless of the incident angle. It is very important to understand that in this case, the photons do not cease to exist, the same photon is reflected.
Please note that in both cases, the angle of the photons (including the ones that reach our eyes and create the picture and colors of the banana) will be random, regardless of the incident angle, this is part of the reasons (and flatness of the surface at the atomic level) why bananas are usually not shiny.
Bottom line, whatever picture we have of the banana, it is because of these two ways of photons (diffuse reflection, absorption and re-emission) that come into our eyes that create this image in our brain, and these are made up of all kinds of wavelengths (as you can see from the other answers), that combine into the perception of the yellow or green banana, in our brain (and the appearance of a usually non shiny surface).
I just wanted to clarify that the answer to your question includes this explanation when we use the words "banana is reflecting". |
646,726 | I do know that there are at least two types of yellow light: a light of a single wavelength of ~580 nm and a combination of green light and red light. (Technically, there could be more yellow light.) And the following two figures are making me confused.
[](https://i.stack.imgur.com/NThcwm.png)
[](https://i.stack.imgur.com/w56LDm.png)
Are red and green light reflected from banana? What wavelengths of white light does a banana reflect? | 2021/06/20 | [
"https://physics.stackexchange.com/questions/646726",
"https://physics.stackexchange.com",
"https://physics.stackexchange.com/users/304554/"
] | Narrow-band yellow is indeed [metameric](https://en.wikipedia.org/wiki/Metamerism_(color)) to some wavelength combinations like green/red, green/yellow/orange/red etc.. But if you see a yellow-reflecting surface, you can be sure\* that its reflectance spectrum is not just a narrow-band yellow. It must be a broadband green/yellow/orange/red reflector. If you find an actual surface that has a narrow peak of reflectance at the yellow wavelength and nothing else, this surface will look dark brown, because it reflects only the tiny portion of light incident on it, compared to a broadband reflector.
So, the short answer is that the figure on the right is grossly misleading, and a banana reflects much more wavelengths than just the yellows.
---
\*Unless it's fluorescing with a narrow-band yellow, which would be unusual | In simplified terms, the left hand image is true of a pure white or chrome banana and is not correct. Right-hand image is correct, of all wavelengths reflected, 580nm reflects the most and comparatively speaking the other wavelengths are partially absorbed.
The simplification of the diagrams requires you see them in conceptual terms. Technically, neither are accurate. |
646,726 | I do know that there are at least two types of yellow light: a light of a single wavelength of ~580 nm and a combination of green light and red light. (Technically, there could be more yellow light.) And the following two figures are making me confused.
[](https://i.stack.imgur.com/NThcwm.png)
[](https://i.stack.imgur.com/w56LDm.png)
Are red and green light reflected from banana? What wavelengths of white light does a banana reflect? | 2021/06/20 | [
"https://physics.stackexchange.com/questions/646726",
"https://physics.stackexchange.com",
"https://physics.stackexchange.com/users/304554/"
] | Narrow-band yellow is indeed [metameric](https://en.wikipedia.org/wiki/Metamerism_(color)) to some wavelength combinations like green/red, green/yellow/orange/red etc.. But if you see a yellow-reflecting surface, you can be sure\* that its reflectance spectrum is not just a narrow-band yellow. It must be a broadband green/yellow/orange/red reflector. If you find an actual surface that has a narrow peak of reflectance at the yellow wavelength and nothing else, this surface will look dark brown, because it reflects only the tiny portion of light incident on it, compared to a broadband reflector.
So, the short answer is that the figure on the right is grossly misleading, and a banana reflects much more wavelengths than just the yellows.
---
\*Unless it's fluorescing with a narrow-band yellow, which would be unusual | I would like to address something the other answers do not mention, that is, what really is happening at the quantum level when we say "the banana is reflecting". When photons (I am only talking about visible wavelength light) are incident on the banana, two things can happen:
1. absorption and re-emission. Most of the photons that get absorbed by the banana, will either heat up the banana peel (transfer their kinetic energies to the molecules vibrational, rotational, and translational energies), or will be absorbed and re-emitted (through electronic transitions), and these photons will be part of the emission spectrum we can see in the other answers. Please note that even in this case, the angle of these photons is random, regardless of the incident angle. It is very important to understand that in this case the photons cease to exist, and new photons are re-emitted.
2. diffuse reflection.
[](https://i.stack.imgur.com/WkfMI.gif)
<https://en.wikipedia.org/wiki/Diffuse_reflection>
These photons will be another part of the emission spectrum that you can see in the other answers. Please note that the angle of these photons will be random, regardless of the incident angle. It is very important to understand that in this case, the photons do not cease to exist, the same photon is reflected.
Please note that in both cases, the angle of the photons (including the ones that reach our eyes and create the picture and colors of the banana) will be random, regardless of the incident angle, this is part of the reasons (and flatness of the surface at the atomic level) why bananas are usually not shiny.
Bottom line, whatever picture we have of the banana, it is because of these two ways of photons (diffuse reflection, absorption and re-emission) that come into our eyes that create this image in our brain, and these are made up of all kinds of wavelengths (as you can see from the other answers), that combine into the perception of the yellow or green banana, in our brain (and the appearance of a usually non shiny surface).
I just wanted to clarify that the answer to your question includes this explanation when we use the words "banana is reflecting". |
646,726 | I do know that there are at least two types of yellow light: a light of a single wavelength of ~580 nm and a combination of green light and red light. (Technically, there could be more yellow light.) And the following two figures are making me confused.
[](https://i.stack.imgur.com/NThcwm.png)
[](https://i.stack.imgur.com/w56LDm.png)
Are red and green light reflected from banana? What wavelengths of white light does a banana reflect? | 2021/06/20 | [
"https://physics.stackexchange.com/questions/646726",
"https://physics.stackexchange.com",
"https://physics.stackexchange.com/users/304554/"
] | I would like to address something the other answers do not mention, that is, what really is happening at the quantum level when we say "the banana is reflecting". When photons (I am only talking about visible wavelength light) are incident on the banana, two things can happen:
1. absorption and re-emission. Most of the photons that get absorbed by the banana, will either heat up the banana peel (transfer their kinetic energies to the molecules vibrational, rotational, and translational energies), or will be absorbed and re-emitted (through electronic transitions), and these photons will be part of the emission spectrum we can see in the other answers. Please note that even in this case, the angle of these photons is random, regardless of the incident angle. It is very important to understand that in this case the photons cease to exist, and new photons are re-emitted.
2. diffuse reflection.
[](https://i.stack.imgur.com/WkfMI.gif)
<https://en.wikipedia.org/wiki/Diffuse_reflection>
These photons will be another part of the emission spectrum that you can see in the other answers. Please note that the angle of these photons will be random, regardless of the incident angle. It is very important to understand that in this case, the photons do not cease to exist, the same photon is reflected.
Please note that in both cases, the angle of the photons (including the ones that reach our eyes and create the picture and colors of the banana) will be random, regardless of the incident angle, this is part of the reasons (and flatness of the surface at the atomic level) why bananas are usually not shiny.
Bottom line, whatever picture we have of the banana, it is because of these two ways of photons (diffuse reflection, absorption and re-emission) that come into our eyes that create this image in our brain, and these are made up of all kinds of wavelengths (as you can see from the other answers), that combine into the perception of the yellow or green banana, in our brain (and the appearance of a usually non shiny surface).
I just wanted to clarify that the answer to your question includes this explanation when we use the words "banana is reflecting". | In simplified terms, the left hand image is true of a pure white or chrome banana and is not correct. Right-hand image is correct, of all wavelengths reflected, 580nm reflects the most and comparatively speaking the other wavelengths are partially absorbed.
The simplification of the diagrams requires you see them in conceptual terms. Technically, neither are accurate. |
34,566 | Do I have to (or is it wise or unwise) to mention having survived a life-threatening illness (such as cancer, a (early) heart attack, etc when applying for a new (non-leading) academic position?
Assume that my health condition is now good enough (and the past health troubles are not obvious from my outward appearance) such that from a medical point of view nothing speaks against my further persuing my academic career and interests.
Nevertheless, due the specific medicaments I have to take for the rest of my life and some remnants of the past health issues, there might be times my productivity might slightly be lessened. Also, even though the probability is not very high, it can in principle not be 100% excluded that the illness will come back at some point.
Of course I would not mention this in a written application, but should I talk about my health condition in the context of an interview or before things are getting serious and it comes to signing the contract?
BTW I currently live in Germany | 2014/12/19 | [
"https://academia.stackexchange.com/questions/34566",
"https://academia.stackexchange.com",
"https://academia.stackexchange.com/users/5904/"
] | **If you think it helps explain a work or productivity gap in your career, I would mention it and I would do so in writing rather than let your prospective employers speculate.** Because overcoming a major medical challenge can help you align your priorities and strengthen you in other ways, doing so can definitely be done in a way that leads one to conclude that it is a strength, not a weakness, of your candidacy.
**If your previous condition is not relevant in these ways, I don't think you have any obligation to bring it up.** Sure, your illness *might* return but *nobody* is 100% immune from serious illness impacting their ability to work or be productive. For that matter, severe chronic illnesses that unambiguously affect productivity (e.g., cramps, migraines, etc.) are simply not the kind of thing that people bring up while interviewing and candidates have no responsibility to do so.
Reminding prospective employers of this can open to the door to (illegal) discrimination based on your medical history and I don't think you are helping either yourself or your prospective employers by bringing it up. When you take an offer, it might be good to let your future department know about your history as background but you might even let this just be raised socially. | If you live in the United States, you are not obligated to provide any information pertinent to disability, including life-threatening illness.
What with competition for jobs being so fierce, you may find yourself
overtly or covertly discriminated against in favour of someone who is
healthier. That's why the Americans with Disabilities Act was passed
into law. Any questions regarding your health from an employer are
also illegal, so you are not obligated to answer. |
108,742 | I'm wondering if there is a way to rotate multiple objects to one point in Illustrator. I already know about blending and Transform Each.
[](https://i.stack.imgur.com/luk1p.png)
Thank you! | 2018/04/30 | [
"https://graphicdesign.stackexchange.com/questions/108742",
"https://graphicdesign.stackexchange.com",
"https://graphicdesign.stackexchange.com/users/120508/"
] | There is a nice script that can do just this called [Rotate Toward Point by Hiroyuki Sato](http://shspage.blogspot.com/2014/02/rotatetowardpointjsx.html)
[](https://i.stack.imgur.com/8znHV.png)
The script rotates the objects in the selection toward the center of the foreground object.
[](https://i.stack.imgur.com/BXFhl.png)
Give it a try and see how you like the results!
NOTE:
-----
This is not a perfect solution. You can't select *every* arrow and have it magically work. You will need to play around with the selections and run it in groups to achieve the effect. | A partial solution is to make a pattern brush:
[](https://i.stack.imgur.com/QGtX9.jpg)
The blue shape is dragged to the brushes collection and defined to be a pattern brush with 40% spacing. The brush is applied to a bunch of rounded squares. They were created using Object > Blend.
Drawbacks:
* very difficult to predefine the places of the shapes, needs math
* only a predefined set of shapes (here only 1)
* curved lines distort the shapes |
4,767,124 | i am new to asp.net and i was told that i need to know UML thoroughly to build successful software, is this correct? i mean cant i just "code and fix" and "model" in my brain. how important is UML and what is the best way to learn it? | 2011/01/22 | [
"https://Stackoverflow.com/questions/4767124",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/585458/"
] | [UML](http://en.wikipedia.org/wiki/Unified_Modeling_Language) is a standard used to convey information about the design of an object oriented software system in a (mostly) graphical format.
It is important as it makes communicating about such a system easier. | >
> i mean cant i just "code and fix" and
> "model" in my brain
>
>
>
You can. It's done every day. And a lot of what's going through it at the time, and how you convey your ideas on napkins is already a form of UML without its rigid nomenclature.
But if you're working with colleagues on big systems, there may be occasions were they speak the language. |
4,767,124 | i am new to asp.net and i was told that i need to know UML thoroughly to build successful software, is this correct? i mean cant i just "code and fix" and "model" in my brain. how important is UML and what is the best way to learn it? | 2011/01/22 | [
"https://Stackoverflow.com/questions/4767124",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/585458/"
] | UML is a simple way to graphically document a system and its interactions. Its value to you is not necessarily using UML itself, but the value of documenting a system before coding or modifying it.
I see the advantages as
1. You are forced to think about the whole design before you start building. A drawing is a lot easier to change than a whole lot of code. Mistakes at this stage are easier to rectify.
2. It helps to understand the system and interactions far better than code alone can. With all the self-documenting code that you can write, a good diagram will nearly always be clearer to and fast to pick up.
The disadvantages are
1. Takes time to produce, when you would probably rather be coding and experimenting
2. Can get out of date if effort is not put in to keeping up to date. | [UML](http://en.wikipedia.org/wiki/Unified_Modeling_Language) is a standard used to convey information about the design of an object oriented software system in a (mostly) graphical format.
It is important as it makes communicating about such a system easier. |
4,767,124 | i am new to asp.net and i was told that i need to know UML thoroughly to build successful software, is this correct? i mean cant i just "code and fix" and "model" in my brain. how important is UML and what is the best way to learn it? | 2011/01/22 | [
"https://Stackoverflow.com/questions/4767124",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/585458/"
] | UML is a simple way to graphically document a system and its interactions. Its value to you is not necessarily using UML itself, but the value of documenting a system before coding or modifying it.
I see the advantages as
1. You are forced to think about the whole design before you start building. A drawing is a lot easier to change than a whole lot of code. Mistakes at this stage are easier to rectify.
2. It helps to understand the system and interactions far better than code alone can. With all the self-documenting code that you can write, a good diagram will nearly always be clearer to and fast to pick up.
The disadvantages are
1. Takes time to produce, when you would probably rather be coding and experimenting
2. Can get out of date if effort is not put in to keeping up to date. | >
> i mean cant i just "code and fix" and
> "model" in my brain
>
>
>
You can. It's done every day. And a lot of what's going through it at the time, and how you convey your ideas on napkins is already a form of UML without its rigid nomenclature.
But if you're working with colleagues on big systems, there may be occasions were they speak the language. |
21,658,312 | I have created a query in AOT with SalesLine as the Main Datasource and CustInvoiceTrans as DataSource under SalesLine.I have given OuterJoin as Join Mode. Now I am trying to develop SSRS Report as follows:
SalesId ItemId OrderedQty RemainingQty InvoicedQty InvoiceId InvoiceDate
My Requirement is to display All SalesOrders in the given Range and also their Respective InvoiceIds and Dates if Invoiced and if not Invoiced their recpective InvoiceIds and Dates as Null.
Kindly help me out in cracking the challenge. | 2014/02/09 | [
"https://Stackoverflow.com/questions/21658312",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/3289427/"
] | In addition to the recommendations above, looking at the relations on the CustInvoiceTrans table in the AOT should show you a link between SalesLine on the InventTransId field. With this, it's a pretty simple query:
While select SalesLine
where SalesLine.ItemId = 'AnItemId'
outer join CustInvoiceTrans
where CustInvoiceTrans.InventTransId ==
SalesLine.InventTransId
{
//build your report data source here
}
Sorry for the formatting, typing this from my phone. The above example will filter the SalesLine table for all records containing the item specified. You'll probably need to refine the logic to get what you need, but it's a start. | It seems you need some basic reporting skills, but [lets do some googling first](https://www.google.com/search?q=AX%202012%20SSRS%20report) to help you out:
* [Reporting in Dynamics AX](http://technet.microsoft.com/en-us/library/ee873263.aspx)
* [Create Quick first SSRS report in Dynamics AX 2012](http://dynamicsaxgyan.wordpress.com/2011/08/19/learn-quick-first-ssrs-report-in-dynamics-ax-2012/)
* [Developing SSRS report using Query in Microsoft Dynamics AX 2012](https://community.dynamics.com/ax/b/dynamics101trainingcenterax/archive/2013/07/10/developing-ssrs-report-using-query-in-microsoft-dynamics-ax-2012.aspx)
If you are more of a visual guy there is [a youtube channel](https://www.youtube.com/user/dynamicsaxbi) to keep you going for hours. |
822,790 | I have a windows server 2008 r2 domain named ITTraining.local promoted to dc and another server which is added in ITTraining domain and on which i am installing Certificate services role, but while doing i am getting the enterprise CA option greyed out, i searched and i found to do
"In order to install an Enterprise CA, you must be a member of either Enterprise Admins or Domain Admins in the forest root domain (either directly or through a group nesting)."
but i am not sure how to do this can someone please guide me | 2016/12/26 | [
"https://serverfault.com/questions/822790",
"https://serverfault.com",
"https://serverfault.com/users/392242/"
] | You cannot do this using gcloud or the cloud console, but you can achieve what you are trying to do if you use the raw [GKE API](https://cloud.google.com/container-engine/reference/rest/v1/projects.zones.clusters/create). In the request body you would need to specify multiple [NodePool objects](https://cloud.google.com/container-engine/reference/rest/v1/projects.zones.clusters.nodePools#NodePool), putting in the name you'd like for each one. You can make programmatic calls using a [client library](https://developers.google.com/discovery/libraries) so that you don't have to craft raw HTTP requests by hand. | What you are trying to achieve is not possible without using the additional steps you are following. All the [clusters are created](https://cloudplatform.googleblog.com/2016/05/introducing-Google-Container-Engine-GKE-node-pools.html) using a default node pool named “default pool”
. Therefore, there is no option on the WUI or [flag on gcloud](https://cloud.google.com/sdk/gcloud/reference/container/clusters/create) that can be used for this. You might want to reply to Robert’s comment, your use case and feedback is important to improve Google’s products. |
822,790 | I have a windows server 2008 r2 domain named ITTraining.local promoted to dc and another server which is added in ITTraining domain and on which i am installing Certificate services role, but while doing i am getting the enterprise CA option greyed out, i searched and i found to do
"In order to install an Enterprise CA, you must be a member of either Enterprise Admins or Domain Admins in the forest root domain (either directly or through a group nesting)."
but i am not sure how to do this can someone please guide me | 2016/12/26 | [
"https://serverfault.com/questions/822790",
"https://serverfault.com",
"https://serverfault.com/users/392242/"
] | What you are trying to achieve is not possible without using the additional steps you are following. All the [clusters are created](https://cloudplatform.googleblog.com/2016/05/introducing-Google-Container-Engine-GKE-node-pools.html) using a default node pool named “default pool”
. Therefore, there is no option on the WUI or [flag on gcloud](https://cloud.google.com/sdk/gcloud/reference/container/clusters/create) that can be used for this. You might want to reply to Robert’s comment, your use case and feedback is important to improve Google’s products. | you have to delete default one and create your own either via terraform or any other programmatic approach. |
822,790 | I have a windows server 2008 r2 domain named ITTraining.local promoted to dc and another server which is added in ITTraining domain and on which i am installing Certificate services role, but while doing i am getting the enterprise CA option greyed out, i searched and i found to do
"In order to install an Enterprise CA, you must be a member of either Enterprise Admins or Domain Admins in the forest root domain (either directly or through a group nesting)."
but i am not sure how to do this can someone please guide me | 2016/12/26 | [
"https://serverfault.com/questions/822790",
"https://serverfault.com",
"https://serverfault.com/users/392242/"
] | You cannot do this using gcloud or the cloud console, but you can achieve what you are trying to do if you use the raw [GKE API](https://cloud.google.com/container-engine/reference/rest/v1/projects.zones.clusters/create). In the request body you would need to specify multiple [NodePool objects](https://cloud.google.com/container-engine/reference/rest/v1/projects.zones.clusters.nodePools#NodePool), putting in the name you'd like for each one. You can make programmatic calls using a [client library](https://developers.google.com/discovery/libraries) so that you don't have to craft raw HTTP requests by hand. | you have to delete default one and create your own either via terraform or any other programmatic approach. |
31,526 | On my portfolio site at <http://samnorris.co.nz> I have an animated .gif image - the astronaut with the heading underneath: "Protecting the galaxy one pixel at a time"...
I'm not sure if it's just me and my monitor or not, and it is only very, very subtle but I can notice the background texture is not blending very well to the background texture on the page (which uses the same texture) and at some resolutions, and especially while scrolling I can see a visible square-like 'halo' around the image, as if the texture on the gif is slightly lighter than on the page or something.
I have tried various Photoshop export settings including Perceptual, Adaptive and Selective and quality: bilinear, bicubic ect. but nothing I have tried so far seems to solve it.
Incidentally, I was using a different background texture before which didn't seem to suffer from the problem, so maybe the problem just lies with the (complexity of?) the texture itself? or is there some way I can make sure the background texture in the .gif blends perfectly to the pages' background?
Here is the actual image itself:
and the background texture used on the page, if it helps at all:
It only seems to be a problem with the GIF and none of the other JPEG's or PNG's on the same page/section which use the same background texture either. | 2014/05/21 | [
"https://graphicdesign.stackexchange.com/questions/31526",
"https://graphicdesign.stackexchange.com",
"https://graphicdesign.stackexchange.com/users/20829/"
] | It may also be that you are zooming the image. If you want the object to be bigger, just bring it closer using the tools that are specifically for 3D, which are placed over the working canvas.
This happened to me. I could see the 3D model super pixellated, and it turned out I was zooming it. | Check your OpenGL Settings. It's likely that your static vs. moving layer is utilizing a different function entirely of your video card is being used. |
31,526 | On my portfolio site at <http://samnorris.co.nz> I have an animated .gif image - the astronaut with the heading underneath: "Protecting the galaxy one pixel at a time"...
I'm not sure if it's just me and my monitor or not, and it is only very, very subtle but I can notice the background texture is not blending very well to the background texture on the page (which uses the same texture) and at some resolutions, and especially while scrolling I can see a visible square-like 'halo' around the image, as if the texture on the gif is slightly lighter than on the page or something.
I have tried various Photoshop export settings including Perceptual, Adaptive and Selective and quality: bilinear, bicubic ect. but nothing I have tried so far seems to solve it.
Incidentally, I was using a different background texture before which didn't seem to suffer from the problem, so maybe the problem just lies with the (complexity of?) the texture itself? or is there some way I can make sure the background texture in the .gif blends perfectly to the pages' background?
Here is the actual image itself:
and the background texture used on the page, if it helps at all:
It only seems to be a problem with the GIF and none of the other JPEG's or PNG's on the same page/section which use the same background texture either. | 2014/05/21 | [
"https://graphicdesign.stackexchange.com/questions/31526",
"https://graphicdesign.stackexchange.com",
"https://graphicdesign.stackexchange.com/users/20829/"
] | Check your OpenGL Settings. It's likely that your static vs. moving layer is utilizing a different function entirely of your video card is being used. | Make the resolution around 300px either when you open a new project or open a .obj file and that's it! |
31,526 | On my portfolio site at <http://samnorris.co.nz> I have an animated .gif image - the astronaut with the heading underneath: "Protecting the galaxy one pixel at a time"...
I'm not sure if it's just me and my monitor or not, and it is only very, very subtle but I can notice the background texture is not blending very well to the background texture on the page (which uses the same texture) and at some resolutions, and especially while scrolling I can see a visible square-like 'halo' around the image, as if the texture on the gif is slightly lighter than on the page or something.
I have tried various Photoshop export settings including Perceptual, Adaptive and Selective and quality: bilinear, bicubic ect. but nothing I have tried so far seems to solve it.
Incidentally, I was using a different background texture before which didn't seem to suffer from the problem, so maybe the problem just lies with the (complexity of?) the texture itself? or is there some way I can make sure the background texture in the .gif blends perfectly to the pages' background?
Here is the actual image itself:
and the background texture used on the page, if it helps at all:
It only seems to be a problem with the GIF and none of the other JPEG's or PNG's on the same page/section which use the same background texture either. | 2014/05/21 | [
"https://graphicdesign.stackexchange.com/questions/31526",
"https://graphicdesign.stackexchange.com",
"https://graphicdesign.stackexchange.com/users/20829/"
] | Although this response is much too late for those that came before me, I thought it might be useful to provide a simple solution (as most of these answers don't really answer concisely imho)....
Make your containing document larger - ie. instead of using a starting document size of 1500 x 1500, try one of 6000 x 6000px.
Although this makes no difference to the resolution of your textures, it does make it possible to see what you are doing whilst creating your textures............. | Make the resolution around 300px either when you open a new project or open a .obj file and that's it! |
31,526 | On my portfolio site at <http://samnorris.co.nz> I have an animated .gif image - the astronaut with the heading underneath: "Protecting the galaxy one pixel at a time"...
I'm not sure if it's just me and my monitor or not, and it is only very, very subtle but I can notice the background texture is not blending very well to the background texture on the page (which uses the same texture) and at some resolutions, and especially while scrolling I can see a visible square-like 'halo' around the image, as if the texture on the gif is slightly lighter than on the page or something.
I have tried various Photoshop export settings including Perceptual, Adaptive and Selective and quality: bilinear, bicubic ect. but nothing I have tried so far seems to solve it.
Incidentally, I was using a different background texture before which didn't seem to suffer from the problem, so maybe the problem just lies with the (complexity of?) the texture itself? or is there some way I can make sure the background texture in the .gif blends perfectly to the pages' background?
Here is the actual image itself:
and the background texture used on the page, if it helps at all:
It only seems to be a problem with the GIF and none of the other JPEG's or PNG's on the same page/section which use the same background texture either. | 2014/05/21 | [
"https://graphicdesign.stackexchange.com/questions/31526",
"https://graphicdesign.stackexchange.com",
"https://graphicdesign.stackexchange.com/users/20829/"
] | I had this same problem and did not find any other discussions addressing this issue, so I thought I'd post the solution for anyone else looking for it here. I fixed it by changing my document resolution (under Image --> Image Size). I started with a 1024x1024 document size, thinking it needed to be the same as my texture resolution. I updated it to 4096x4096 and found my object rendering much improved. The texture sizes are independent of your document size (I am new at this, so that probably should have been obvious to me to begin with). | i got the solution ..
this low resolution you see in the viewing mode is just while designing, after you did all your moves and changes click on the 3D layer and go to 3D menu then click Render or just click the shortcut ALT+SHIFT+CTRL+R. it will take a few minutes to render then you will see it with full resolution. |
31,526 | On my portfolio site at <http://samnorris.co.nz> I have an animated .gif image - the astronaut with the heading underneath: "Protecting the galaxy one pixel at a time"...
I'm not sure if it's just me and my monitor or not, and it is only very, very subtle but I can notice the background texture is not blending very well to the background texture on the page (which uses the same texture) and at some resolutions, and especially while scrolling I can see a visible square-like 'halo' around the image, as if the texture on the gif is slightly lighter than on the page or something.
I have tried various Photoshop export settings including Perceptual, Adaptive and Selective and quality: bilinear, bicubic ect. but nothing I have tried so far seems to solve it.
Incidentally, I was using a different background texture before which didn't seem to suffer from the problem, so maybe the problem just lies with the (complexity of?) the texture itself? or is there some way I can make sure the background texture in the .gif blends perfectly to the pages' background?
Here is the actual image itself:
and the background texture used on the page, if it helps at all:
It only seems to be a problem with the GIF and none of the other JPEG's or PNG's on the same page/section which use the same background texture either. | 2014/05/21 | [
"https://graphicdesign.stackexchange.com/questions/31526",
"https://graphicdesign.stackexchange.com",
"https://graphicdesign.stackexchange.com/users/20829/"
] | I had this same problem and did not find any other discussions addressing this issue, so I thought I'd post the solution for anyone else looking for it here. I fixed it by changing my document resolution (under Image --> Image Size). I started with a 1024x1024 document size, thinking it needed to be the same as my texture resolution. I updated it to 4096x4096 and found my object rendering much improved. The texture sizes are independent of your document size (I am new at this, so that probably should have been obvious to me to begin with). | @ prinomer
I've been searching for the same information. It looks like Adobe has removed the ability to change the render options while working on an object and defaults to using interactive rendering.
Read Peter Villevoye's answer over here
<https://forums.adobe.com/thread/1075991>
<https://forums.adobe.com/servlet/JiveServlet/downloadImage/2-6859248-687492/Schermafbeelding+2014-10-23+om+15.45.56.png> |
31,526 | On my portfolio site at <http://samnorris.co.nz> I have an animated .gif image - the astronaut with the heading underneath: "Protecting the galaxy one pixel at a time"...
I'm not sure if it's just me and my monitor or not, and it is only very, very subtle but I can notice the background texture is not blending very well to the background texture on the page (which uses the same texture) and at some resolutions, and especially while scrolling I can see a visible square-like 'halo' around the image, as if the texture on the gif is slightly lighter than on the page or something.
I have tried various Photoshop export settings including Perceptual, Adaptive and Selective and quality: bilinear, bicubic ect. but nothing I have tried so far seems to solve it.
Incidentally, I was using a different background texture before which didn't seem to suffer from the problem, so maybe the problem just lies with the (complexity of?) the texture itself? or is there some way I can make sure the background texture in the .gif blends perfectly to the pages' background?
Here is the actual image itself:
and the background texture used on the page, if it helps at all:
It only seems to be a problem with the GIF and none of the other JPEG's or PNG's on the same page/section which use the same background texture either. | 2014/05/21 | [
"https://graphicdesign.stackexchange.com/questions/31526",
"https://graphicdesign.stackexchange.com",
"https://graphicdesign.stackexchange.com/users/20829/"
] | I had this same problem and did not find any other discussions addressing this issue, so I thought I'd post the solution for anyone else looking for it here. I fixed it by changing my document resolution (under Image --> Image Size). I started with a 1024x1024 document size, thinking it needed to be the same as my texture resolution. I updated it to 4096x4096 and found my object rendering much improved. The texture sizes are independent of your document size (I am new at this, so that probably should have been obvious to me to begin with). | Although this response is much too late for those that came before me, I thought it might be useful to provide a simple solution (as most of these answers don't really answer concisely imho)....
Make your containing document larger - ie. instead of using a starting document size of 1500 x 1500, try one of 6000 x 6000px.
Although this makes no difference to the resolution of your textures, it does make it possible to see what you are doing whilst creating your textures............. |
31,526 | On my portfolio site at <http://samnorris.co.nz> I have an animated .gif image - the astronaut with the heading underneath: "Protecting the galaxy one pixel at a time"...
I'm not sure if it's just me and my monitor or not, and it is only very, very subtle but I can notice the background texture is not blending very well to the background texture on the page (which uses the same texture) and at some resolutions, and especially while scrolling I can see a visible square-like 'halo' around the image, as if the texture on the gif is slightly lighter than on the page or something.
I have tried various Photoshop export settings including Perceptual, Adaptive and Selective and quality: bilinear, bicubic ect. but nothing I have tried so far seems to solve it.
Incidentally, I was using a different background texture before which didn't seem to suffer from the problem, so maybe the problem just lies with the (complexity of?) the texture itself? or is there some way I can make sure the background texture in the .gif blends perfectly to the pages' background?
Here is the actual image itself:
and the background texture used on the page, if it helps at all:
It only seems to be a problem with the GIF and none of the other JPEG's or PNG's on the same page/section which use the same background texture either. | 2014/05/21 | [
"https://graphicdesign.stackexchange.com/questions/31526",
"https://graphicdesign.stackexchange.com",
"https://graphicdesign.stackexchange.com/users/20829/"
] | I had this same problem and did not find any other discussions addressing this issue, so I thought I'd post the solution for anyone else looking for it here. I fixed it by changing my document resolution (under Image --> Image Size). I started with a 1024x1024 document size, thinking it needed to be the same as my texture resolution. I updated it to 4096x4096 and found my object rendering much improved. The texture sizes are independent of your document size (I am new at this, so that probably should have been obvious to me to begin with). | It may also be that you are zooming the image. If you want the object to be bigger, just bring it closer using the tools that are specifically for 3D, which are placed over the working canvas.
This happened to me. I could see the 3D model super pixellated, and it turned out I was zooming it. |
31,526 | On my portfolio site at <http://samnorris.co.nz> I have an animated .gif image - the astronaut with the heading underneath: "Protecting the galaxy one pixel at a time"...
I'm not sure if it's just me and my monitor or not, and it is only very, very subtle but I can notice the background texture is not blending very well to the background texture on the page (which uses the same texture) and at some resolutions, and especially while scrolling I can see a visible square-like 'halo' around the image, as if the texture on the gif is slightly lighter than on the page or something.
I have tried various Photoshop export settings including Perceptual, Adaptive and Selective and quality: bilinear, bicubic ect. but nothing I have tried so far seems to solve it.
Incidentally, I was using a different background texture before which didn't seem to suffer from the problem, so maybe the problem just lies with the (complexity of?) the texture itself? or is there some way I can make sure the background texture in the .gif blends perfectly to the pages' background?
Here is the actual image itself:
and the background texture used on the page, if it helps at all:
It only seems to be a problem with the GIF and none of the other JPEG's or PNG's on the same page/section which use the same background texture either. | 2014/05/21 | [
"https://graphicdesign.stackexchange.com/questions/31526",
"https://graphicdesign.stackexchange.com",
"https://graphicdesign.stackexchange.com/users/20829/"
] | I had this same problem and did not find any other discussions addressing this issue, so I thought I'd post the solution for anyone else looking for it here. I fixed it by changing my document resolution (under Image --> Image Size). I started with a 1024x1024 document size, thinking it needed to be the same as my texture resolution. I updated it to 4096x4096 and found my object rendering much improved. The texture sizes are independent of your document size (I am new at this, so that probably should have been obvious to me to begin with). | Make the resolution around 300px either when you open a new project or open a .obj file and that's it! |
31,526 | On my portfolio site at <http://samnorris.co.nz> I have an animated .gif image - the astronaut with the heading underneath: "Protecting the galaxy one pixel at a time"...
I'm not sure if it's just me and my monitor or not, and it is only very, very subtle but I can notice the background texture is not blending very well to the background texture on the page (which uses the same texture) and at some resolutions, and especially while scrolling I can see a visible square-like 'halo' around the image, as if the texture on the gif is slightly lighter than on the page or something.
I have tried various Photoshop export settings including Perceptual, Adaptive and Selective and quality: bilinear, bicubic ect. but nothing I have tried so far seems to solve it.
Incidentally, I was using a different background texture before which didn't seem to suffer from the problem, so maybe the problem just lies with the (complexity of?) the texture itself? or is there some way I can make sure the background texture in the .gif blends perfectly to the pages' background?
Here is the actual image itself:
and the background texture used on the page, if it helps at all:
It only seems to be a problem with the GIF and none of the other JPEG's or PNG's on the same page/section which use the same background texture either. | 2014/05/21 | [
"https://graphicdesign.stackexchange.com/questions/31526",
"https://graphicdesign.stackexchange.com",
"https://graphicdesign.stackexchange.com/users/20829/"
] | @ prinomer
I've been searching for the same information. It looks like Adobe has removed the ability to change the render options while working on an object and defaults to using interactive rendering.
Read Peter Villevoye's answer over here
<https://forums.adobe.com/thread/1075991>
<https://forums.adobe.com/servlet/JiveServlet/downloadImage/2-6859248-687492/Schermafbeelding+2014-10-23+om+15.45.56.png> | Make the resolution around 300px either when you open a new project or open a .obj file and that's it! |
31,526 | On my portfolio site at <http://samnorris.co.nz> I have an animated .gif image - the astronaut with the heading underneath: "Protecting the galaxy one pixel at a time"...
I'm not sure if it's just me and my monitor or not, and it is only very, very subtle but I can notice the background texture is not blending very well to the background texture on the page (which uses the same texture) and at some resolutions, and especially while scrolling I can see a visible square-like 'halo' around the image, as if the texture on the gif is slightly lighter than on the page or something.
I have tried various Photoshop export settings including Perceptual, Adaptive and Selective and quality: bilinear, bicubic ect. but nothing I have tried so far seems to solve it.
Incidentally, I was using a different background texture before which didn't seem to suffer from the problem, so maybe the problem just lies with the (complexity of?) the texture itself? or is there some way I can make sure the background texture in the .gif blends perfectly to the pages' background?
Here is the actual image itself:
and the background texture used on the page, if it helps at all:
It only seems to be a problem with the GIF and none of the other JPEG's or PNG's on the same page/section which use the same background texture either. | 2014/05/21 | [
"https://graphicdesign.stackexchange.com/questions/31526",
"https://graphicdesign.stackexchange.com",
"https://graphicdesign.stackexchange.com/users/20829/"
] | i got the solution ..
this low resolution you see in the viewing mode is just while designing, after you did all your moves and changes click on the 3D layer and go to 3D menu then click Render or just click the shortcut ALT+SHIFT+CTRL+R. it will take a few minutes to render then you will see it with full resolution. | Make the resolution around 300px either when you open a new project or open a .obj file and that's it! |
497,803 | So my question is this that suppose we consider a solid everyday object, say a spherical stone. Now, if I consider an atom or a molecule of the stone away from the center of the stone, then I can say that the gravitational force on the atom/molecule is non zero due to the other atoms/molecular constituents of the stone in question. So what force balances this unbalanced gravitational force?
If it is the electric repulsion due to the other atoms then why does the body not explode outward, for the electric repulsion due to the other atoms is way stronger than the gravitational force? Or am I missing something here?
Also, does the crystal structure of arrangement of atoms inside the solid play a role in this? | 2019/08/20 | [
"https://physics.stackexchange.com/questions/497803",
"https://physics.stackexchange.com",
"https://physics.stackexchange.com/users/236233/"
] | >
> In relativity when an observer records an event some distance away
> from him, the timing of the event he measures would be different from
> what he would measure if he was close to the event as light would take
> some time to reach him.
>
>
>
This isn't true in Special Relativity (SR) - the *observed* time of an event *is* the time recorded by a (synchronized) clock *at* the spatial location of the event, and it is *not* the time that light from the event reaches the origin.
That is, *observing* is the not the same as *seeing* (or [photographing](http://users.monash.edu.au/~leo/research/movies/sr/sr-wmv.html)) in SR. From the Wikipedia article [Observer (special relativity)](https://en.wikipedia.org/wiki/Observer_(special_relativity)):
>
> The special relativity usage differs significantly from the ordinary
> English meaning of "observer". Reference frames are inherently
> nonlocal constructs, covering all of space and time or a nontrivial
> part of it; thus it does not make sense to speak of an observer (in
> the special relativistic sense) having a location. Also, an inertial
> observer cannot accelerate at a later time, nor can an accelerating
> observer stop accelerating.
>
>
> Physicists use the term "observer" as shorthand for a specific
> reference frame from which a set of objects or events is being
> measured. Speaking of an observer in special relativity is not
> specifically hypothesizing an individual person who is experiencing
> events, but rather it is a particular mathematical context which
> objects and events are to be evaluated from. The effects of special
> relativity occur whether or not there is a sentient being within the
> inertial reference frame to witness them.
>
>
>
In summary, an (inertial) *observer* in SR is not a being with a definite location but is, conceptually, a system of unaccelerated rods and (synchronized) clocks at relative rest that assign space and time coordinates to each event. | I would expect that most observers would take into account the speed it takes the light to reach them, when they measure the time of an event. So, two observers with zero relative velocity to each other, but at different distances from an event, would measure the same occurrence time for the event (assuming they have synchronized clocks). |
2,216,185 | What is the differences in use of these two objects?
**Which one should be used for a "Youtube-like" video player with a custom skin and playlist?** | 2010/02/07 | [
"https://Stackoverflow.com/questions/2216185",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/224988/"
] | FLVPlayback is a component that already has the controls - scrollbar, play/pause button...etc. Video object is an object that only has the video area.
If you want to do something like the YouTube player, you will need to start with the FLVPlayback component and skin it [(Example)](http://www.adobe.com/devnet/flash/articles/custom_flvcomp.html). But you will have to build a playlist by yourself or use the List/DataGrid components in flash. | "Component" really is the key word here, Video is the base object, the FLVPlayback Component is a UI wrapper that uses the Video object internally. It provides a simple interface for developers to add video content, with user controls, to their applications. |
2,216,185 | What is the differences in use of these two objects?
**Which one should be used for a "Youtube-like" video player with a custom skin and playlist?** | 2010/02/07 | [
"https://Stackoverflow.com/questions/2216185",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/224988/"
] | "Component" really is the key word here, Video is the base object, the FLVPlayback Component is a UI wrapper that uses the Video object internally. It provides a simple interface for developers to add video content, with user controls, to their applications. | FLVPlayback component is a controller for the Video class, and it implements some UI logic.
Not only does it add a skinnable UI, it also implements something called "[ActionScript cue points](http://help.adobe.com/en_US/as3/dev/WS5b3ccc516d4fbf351e63e3d118a9b90204-7d36.html)", which you can add at run time. It's probably a very simple mechanism that peeks at the playback time at preset intervals and executes any overdue cue points in order. I implemented something similar for having external cue points for SWF files. As mentioned in the link, this method of dispatching cued events is probably less accurate than embedding cue points in the video (claiming it can be off by as much as a tenth of a second), but I think it's more flexible, and I wouldn't expect the margin of error to be any greater than the frame delay (e.g. ~16ms at 60fps) if you just implemented this simple feature yourself.
For a YouTube-like player, I'd use the Video class, because I'd have complete control over UI, which is very simple anyway (involves calling methods like play, pause, resume, seek, and listening for a few events). You wouldn't be tied into the existing skinning system, and it would also give you more control accessing frames of the NetStream for generating frame previews when seeking. |
2,216,185 | What is the differences in use of these two objects?
**Which one should be used for a "Youtube-like" video player with a custom skin and playlist?** | 2010/02/07 | [
"https://Stackoverflow.com/questions/2216185",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/224988/"
] | FLVPlayback is a component that already has the controls - scrollbar, play/pause button...etc. Video object is an object that only has the video area.
If you want to do something like the YouTube player, you will need to start with the FLVPlayback component and skin it [(Example)](http://www.adobe.com/devnet/flash/articles/custom_flvcomp.html). But you will have to build a playlist by yourself or use the List/DataGrid components in flash. | FLVPlayback component is a controller for the Video class, and it implements some UI logic.
Not only does it add a skinnable UI, it also implements something called "[ActionScript cue points](http://help.adobe.com/en_US/as3/dev/WS5b3ccc516d4fbf351e63e3d118a9b90204-7d36.html)", which you can add at run time. It's probably a very simple mechanism that peeks at the playback time at preset intervals and executes any overdue cue points in order. I implemented something similar for having external cue points for SWF files. As mentioned in the link, this method of dispatching cued events is probably less accurate than embedding cue points in the video (claiming it can be off by as much as a tenth of a second), but I think it's more flexible, and I wouldn't expect the margin of error to be any greater than the frame delay (e.g. ~16ms at 60fps) if you just implemented this simple feature yourself.
For a YouTube-like player, I'd use the Video class, because I'd have complete control over UI, which is very simple anyway (involves calling methods like play, pause, resume, seek, and listening for a few events). You wouldn't be tied into the existing skinning system, and it would also give you more control accessing frames of the NetStream for generating frame previews when seeking. |
208,869 | 1. The time children spend (or spends) watching TV.
2. The time children spend (or spends) working prevent (or prevents) then from focusing on their school work.
Could you please help on the above sentence corrections. And the explanation as well. | 2019/04/30 | [
"https://ell.stackexchange.com/questions/208869",
"https://ell.stackexchange.com",
"https://ell.stackexchange.com/users/-1/"
] | It's used to more clearly differentiate between the two meanings of writing for a magazine. It can be both the physical act of writing (pen on paper, on a computer etc.) or it can also mean the act of being employed by the magazine submitting articles sometimes.
By writing it this way, it's shown that we're talking about her being employed by the magazine, and not that she is writing physically while jack is talking. (presumably taking notes about jacks story) | It's perfectly good to write "She was writing articles for her magazine" which can mean one of two things:
1. At the moment When Jack spoke to her she was actually in the act of writing
2. or, On the day when Jack spoke to her she was habitually writing
The context which follows ("was always looking") makes it clear that it means 2: it describes a habitual action.
"One day, Jack [did something]" is a typical phrase to introduce an instant, at some unspecified time in the past, which is only notable because of what Jack did that day. |
208,869 | 1. The time children spend (or spends) watching TV.
2. The time children spend (or spends) working prevent (or prevents) then from focusing on their school work.
Could you please help on the above sentence corrections. And the explanation as well. | 2019/04/30 | [
"https://ell.stackexchange.com/questions/208869",
"https://ell.stackexchange.com",
"https://ell.stackexchange.com/users/-1/"
] | It's used to more clearly differentiate between the two meanings of writing for a magazine. It can be both the physical act of writing (pen on paper, on a computer etc.) or it can also mean the act of being employed by the magazine submitting articles sometimes.
By writing it this way, it's shown that we're talking about her being employed by the magazine, and not that she is writing physically while jack is talking. (presumably taking notes about jacks story) | One of the uses of the past simple is to indicate activities that the person habitually engaged in. The past continuous is used to indicate an activity that the person was, at that time, engaged in. So by using the simple past, the writer is indicating that she habitually wrote articles, not that she necessarily was at that moment writing. The past perfect is used to indicate an action that is completed. Since the writer wants to discuss ongoing conduct, the past perfect is not appropriate. |
291,371 | I want to ask if I wish or desire to have something in the future, then is it correct grammatically to say
>
> I ***wish*** I would go to that place in future?
>
>
>
But I have read somewhere that if you desire to happen something in present or future, you use *hope* to describe it.
e.g.
>
> I ***hope*** to go to that place.
>
>
> | 2021/07/14 | [
"https://ell.stackexchange.com/questions/291371",
"https://ell.stackexchange.com",
"https://ell.stackexchange.com/users/139688/"
] | A future *hope* or *desire* is something you want and expect could reasonably happen in the future. Because it's really possible, we use normal future grammar:
>
> "I hope Janice **gets** over the flu soon."
>
>
>
A *wish* or *fantasy* is something that you'd like to see happen in the future, but you don't consider it reasonably possible, so you're not at all expecting it. Since this is something essentially unreal, we use unreal grammar:
>
> "I wish my manager **would stop** dumping work on me."
>
>
>
So, your question is asking for two different things, both something you think is possible, and something you don't think is possible. There's no grammatical way to express both in one sentence because they're opposites.
To your examples, the first, correctly phrased read like this: "I wish I could go to that place in the future" ("could", and no question mark), and means you don't expect you will ever be able to go there, but you want it.
The second is correct grammar, and means, "I want to go to that place in the future, and I believe it's a possibility." | The difference between "wish" and "hope" or "would like" can be arbitrary. One definition I have read (which is not 100% authoritative), is that you hope for something that might in reality happen, but you wish for things that are mostly impossible or would involve a supernatural intervention.
"I would like to go to The Grand Canyon this summer."
"I hope to see the Grand Canyon one day."
"I wish I was hiking in the Grand Canyon **right now**."
---
"Wish" can also refer to a fervent hope or dream. Such as:
"It is my greatest wish to be a doctor one day." |
205,540 | I would like to disable the product only from search. The product should be enabled and can be seen on the category page and everywhere except on the search page. | 2017/12/12 | [
"https://magento.stackexchange.com/questions/205540",
"https://magento.stackexchange.com",
"https://magento.stackexchange.com/users/58090/"
] | In the **Admin Dashboard**,try to redirect to **Products** -> **Catalog** -> **Choose Edit which Product that you want to disable in search**.
Scroll down, find the **Visibility** label. Choose `Catalog` and Save.
[](https://i.stack.imgur.com/eAsrx.png)
After that, don't forget to reindex(**System** -> **Tool** -> **Index Management**). Your product will not appear in search only. | Magento, go to **Catalog menu>Manage Products** and select the product that you want to edit from the table with the existing products in your catalog. On the page with the general settings of that product (displayed by clicking on the General button on the left) find the drop-down menu labeled **Visibility** and set it to **Catalog**. Then click on the Save or on the **Save and Continue** Edit button. In this way the product will be visible in the catalog on the frontend, but **it will not be shown in search results.** |
62,479 | Detroit, MI is the center of Class B airspace, however a good portion of that airspace within the inverted wedding cake is in Canada. What are the mechanisms that allow US to define Class B airspace force and effect in Canada?
The VFR Terminal chart for reference:
<https://aeronav.faa.gov/content/aeronav/tac_files/PDFs/Detroit_TAC_91_P.pdf> | 2019/04/19 | [
"https://aviation.stackexchange.com/questions/62479",
"https://aviation.stackexchange.com",
"https://aviation.stackexchange.com/users/18572/"
] | The portion over Canada is not designated US Class B but Canadian Class C.
Note that Canadian Class C airspace definition is similar to US Class B. In particular, VFR aircraft must obtain clearance prior to entry. A mode C transponder is required.
To add: airspace over Canada is generally managed by [NAV CANADA](https://en.wikipedia.org/wiki/Nav_Canada). Definition for the Canadian side of the Detroit Terminal Control Area (TCA) can be found in NAV CANADA's [Designated Airspace Handbook](https://www.navcanada.ca/EN/products-and-services/Documents/DAH_Current_EN.pdf), portions excerpted below (from page 78):
[](https://i.stack.imgur.com/174ME.png)
We can see that these definitions matches the eastern portions of the Detroit TCA exactly, e.g, the outer area altitudes from 6,000' to 10,000' bounded 30nm from the Detroit VOR (DXO).
The Detroit TCA airspace was modified a few years ago, which required coordination between the FAA and Nav Canada. The following discussion from the [US Federal Register](https://www.govinfo.gov/content/pkg/FR-2014-01-21/pdf/2014-00622.pdf) (page 3307) may be of further interest:
>
> Also, as noted in the NPRM, the
> eastern portion of the DTW Class B
> airspace area extends into Canadian
> airspace. The equivalent Canadian
> airspace to Class B airspace, as
> designated in the United States, is Class
> C airspace. NAV CANADA, the
> Canadian air service navigation
> provider, generally designates Class C
> airspace with a 12,500 feet MSL ceiling,
> however, has advised the FAA of its
> willingness to establish corresponding
> Canadian Class C airspace adjoining the
> FAA’s DTW Class B airspace with a
> ceiling of 10,000 feet MSL.
> Additionally, NAV CANADA advised it
> would make the Canadian Class C
> airspace action effective to match the
> effective date of this DTW Class B
> airspace modification action.
>
>
> | All airspace in each FIR (or UIR) is by default controlled by the corresponding ACC (US: ARTCC). In the case of metro Detroit, it's Cleveland FIR/ARTCC on the US side and Toronto FIR/ACC on the Canadian side.
All other controlling agencies get their airspace by delegation from the ACC via an LOA. Cleveland ARTCC delegates the airspace on the US side to Detroit TRACON, and Toronto FIR/ACC delegates the airspace on the Canadian side *also* to Detroit TRACON. So, despite being a US agency, Detroit TRACON ends up controlling airspace in Canada as well. This is common along international borders, even in places where the land border isn't as well agreed as the US/Canada one. |
18,964 | I am in the process of leaving my PhD programme in life sciences at a top university in the UK. A PhD is simply not for me and I find the work/life balance to be intolerable; in addition, my PhD so far has included an industrial placement at a fortune 500 company that was very eye opening and enjoyable.
My question is whether it is better to leave the fact that I quit a PhD off my CV, or to have the failed PhD / MPhil on there, or to mask it as '18 months of lab experience' or something similar. Is it possible to make the fact I left a PhD sound good? | 2014/02/04 | [
"https://workplace.stackexchange.com/questions/18964",
"https://workplace.stackexchange.com",
"https://workplace.stackexchange.com/users/15684/"
] | I went through the process of leaving a PhD program just before the dissertation phase. I have not experienced any negative impact from this in job searching or interviewing. In fact, in some cases the interviewers have joked about how leaving early must imply that I actually have some common sense.
[I wrote up some thoughts on the mathematics StackExchange site that might be relevant for this thread too.](https://math.stackexchange.com/questions/44704/how-to-study-math-to-really-understand-it-and-have-a-healthy-lifestyle-with-free/129430#129430)
In general, just be honest. Try to leave your PhD group on the best terms possible. Connect with peers and professors as much as you can before leaving (via LinkedIn, or swapping emails, etc.). Ask them point blank if you can count on a positive reference if you ever needed one.
If you leave on bad terms (e.g. your adviser is furious that you are leaving, or you leave without completing a certain milestone that causes everyone else to absorb more work) then it can be trickier but still not impossible.
Be honest when describing your motivations. Experiencing industrial work settings and preferring that to an academic setting is a very mature and valid reason to switch. If someone holds that against you, then you get free info that they would be a horrible boss.
I do list my lab experience on my resume. I completed several useful and interesting projects in my time as a PhD candidate, so I like to talk about these during interviews if I can. Having them on the resume does sometimes lead to confusion, so just be sure to practice a nicely worded and clear statement that explains why the resume items are there and what your thinking was in terms of leaving the PhD program. | I think you should address your situation in your cover letter. You've been a student, now you're looking for a position doing "X" or working in field "X", etc. adjust for each application as needed. People leave school, change majors, careers and don't need to go into detail why they "quit" but need to address what it is you want. Be positive.
On the CV, just make sure you indicate your degree(s) and where you've been. Don't leave any gaps. Many full-time students are not employed at that time.
If there is any coursework, lab experiences, etc. that are relevant, make sure you include them. Academia is a little different, but in most industries, leaving a phd program would not be looked at too negatively. |
18,964 | I am in the process of leaving my PhD programme in life sciences at a top university in the UK. A PhD is simply not for me and I find the work/life balance to be intolerable; in addition, my PhD so far has included an industrial placement at a fortune 500 company that was very eye opening and enjoyable.
My question is whether it is better to leave the fact that I quit a PhD off my CV, or to have the failed PhD / MPhil on there, or to mask it as '18 months of lab experience' or something similar. Is it possible to make the fact I left a PhD sound good? | 2014/02/04 | [
"https://workplace.stackexchange.com/questions/18964",
"https://workplace.stackexchange.com",
"https://workplace.stackexchange.com/users/15684/"
] | I went through the process of leaving a PhD program just before the dissertation phase. I have not experienced any negative impact from this in job searching or interviewing. In fact, in some cases the interviewers have joked about how leaving early must imply that I actually have some common sense.
[I wrote up some thoughts on the mathematics StackExchange site that might be relevant for this thread too.](https://math.stackexchange.com/questions/44704/how-to-study-math-to-really-understand-it-and-have-a-healthy-lifestyle-with-free/129430#129430)
In general, just be honest. Try to leave your PhD group on the best terms possible. Connect with peers and professors as much as you can before leaving (via LinkedIn, or swapping emails, etc.). Ask them point blank if you can count on a positive reference if you ever needed one.
If you leave on bad terms (e.g. your adviser is furious that you are leaving, or you leave without completing a certain milestone that causes everyone else to absorb more work) then it can be trickier but still not impossible.
Be honest when describing your motivations. Experiencing industrial work settings and preferring that to an academic setting is a very mature and valid reason to switch. If someone holds that against you, then you get free info that they would be a horrible boss.
I do list my lab experience on my resume. I completed several useful and interesting projects in my time as a PhD candidate, so I like to talk about these during interviews if I can. Having them on the resume does sometimes lead to confusion, so just be sure to practice a nicely worded and clear statement that explains why the resume items are there and what your thinking was in terms of leaving the PhD program. | There is no need to make quitting PhD sound good. Be honest and let them know why you quit. The problem with providing partial information like "18 months of lab experience" is, if during the HR round, or during a background check, your employer comes to know about you having quit/failed PhD, it'll reflect worse on your personality.
Just let the employer know why you quit and highlight your skills and achievements. That would at the least save you from any future embarrassments. |
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