qid int64 1 74.7M | question stringlengths 12 33.8k | date stringlengths 10 10 | metadata list | response_j stringlengths 0 115k | response_k stringlengths 2 98.3k |
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178,546 | So far any search for Pogoplug security risk does not bring up anything alarming. Just wondering if anyone else has run across any mention of security issues with this device. | 2010/08/21 | [
"https://superuser.com/questions/178546",
"https://superuser.com",
"https://superuser.com/users/46807/"
] | Let's go down the stack and look at every aspect of its security.
* **Remote Computer**: very easily compromised on an untrustworthy computer via a keylogger, so if you either a) only access your Pogoplug from your (trustworthy) computers, b) change your password often (i.e., at least once every 6 weeks), or c) use the very awesome [Keepass](http://keepass.info) 2.x that has a feature that scrambles then descrambles the password through simulated keystrokes, the clipboard and the arrow keys.
* **Remote Computer's Internet-Your Pogoplug**: not as easily compromised because Pogoplug (if the reviews are correct) operates entirely under Secure Sockets (SSL), meaning any data between the remote computer and the pogoplug is encrypted with encryptions algorithms that only quantum computers can crack before the universe explodes.
* **The Pogoplug**: There aren't any insomnia-worthy viruses or threats out there, since it runs ARM (only common in phones) and Linux. Unless somebody launches a DDoS attack on it (which, assuming your son isn't Osama bin Laden or targeted by 4chan) means that nobody will a) be able to get into it without the codes, or b) care.
* **Your Son and His Friends**: This is the most important part because most modern schemes involve exploiting human psychology and inability to think reasonably when in immense stress. The worst thing that can feasibly happen is that your son accidentally changes the Pogoplug's privacy settings without knowing or forgetting to log out of a borrowed or public computer.
**In Summary**: The Pogoplug itself isn't a security problem, the people who use it are. And for the same reason phishing schemes are so widespread nowadays.
**Edit**: I should mention that when I was analyzing the security weakpoints, I was assuming that there's some superpowerful group of people after your son (e.g. the NSA, Al Qaeda). Otherwise the chances of people even trying the worst-case attacks I show here are nigh unlikely. | The pogoplug essentially makes a connection to the manufacturer's server and provides content through it, at least in part. In my book that is a security concern, but for most people it is no more a threat than posting your pictures on facebook and only letting your friends see them is.
You're trusting the manufacturer to actively protect your data though, rather than passively protect it by designing a good password authentication scheme (for example).
This is based on what I've read about pogoplug which is very little recently, and a bit more, but a lot longer ago. |
65,475 | Find Familiar lets you cast touch spells through your familiar. Warding Bond is a Touch spell, that creates a connection between "you and the target". I can't find anything against it, but would it be possible to have my Wizard make his familiar cast Warding Bond on the Wizard himself, so that the Wizard gets the +1 to AC and saving throws and resistance to damage?
I realized after I wrote this much that Wizards don't get Warding Bond, but I think the question is still valid for multiclassers. | 2015/07/30 | [
"https://rpg.stackexchange.com/questions/65475",
"https://rpg.stackexchange.com",
"https://rpg.stackexchange.com/users/17884/"
] | So to start with, it's worth pointing out that you can cast *Warding Bond* on yourself. Touch range spells are described as:
>
> Some spells can target only a creature (including you) that you touch.
>
>
>
Further, under the Targeting Yourself section, it says:
>
> If a spell targets a creature of your choice, you can choose yourself, unless the creature must be hostile or specifically a creature other than you.
>
>
>
You can cast touch spells on yourself unless they specifically say you can't, and *Warding Bond* doesn't specify that. This is actually not a bad idea - you'll get the +1 to AC and saving throws, and the double damage you'll take will be canceled out by the resistance to damage.
*Find Familiar* says that:
>
> when you cast a spell with a range of touch, your familiar can deliver the spell as if it had cast the spell.
>
>
>
Your familiar can **deliver** the spell as if it had cast the spell. This is the only way in which the familiar acts as the caster of the spell. It can certainly deliver *Warding Bond* for you, but you will still be the caster of the spell, and the "you" in *Warding Bond* will still be you, not your familiar. This is effectively equivalent to casting it on yourself directly, except that it took your familiar's reaction. | Short Answer
============
* **If** you can cast Warding Bond on yourself, via touch, then **Yes**, your familiar can do it.
* **If** you can't cast Warding Bond on yourself, via touch, then **No**, your familiar cannot do it.
The embedded question required to answer the question posed is:
===============================================================
**"Can you cast Warding Bond on yourself?"**
1. Miniman's answer suggests that you can.
2. The following RAW-based analysis suggests **"No, You Can't"** based on the specifics in the spell description rather than the general rules cited in the "Yes" answer. The spell relies on there being **two creatures** (plural) for this magical bond to form and protect one of them. From the spell description:
>
> The spell ends if you drop to 0 hit points or if you and the target become separated by more than 60 feet. It also ends if the spell is cast again on **either of the connected creatures.**
>
>
>
3. [A tweet by Jeremy Crawford suggests that you can't](http://www.sageadvice.eu/2016/11/19/can-you-cast-warding-bond-on-yourself/):
>
> **Sean** @Lord\_Sicarious · [6 Oct 2016](https://twitter.com/Lord_Sicarious/status/784019326311407625)
>
> @JeremyECrawford can you cast Warding Bond on yourself? Its rules seem to assume two people, but no explicit limitation.
>
>
> **Jeremy Crawford** @JeremyECrawford · [6 Oct 2016](https://twitter.com/JeremyECrawford/status/784078660034703360)
>
> Warding bond—you can't target yourself with it. #DnD
>
>
>
4. "Specific over General" supports **No** over **Yes**.
Each DM will rule on what makes most sense to that DM. Since the impact isn't game breaking, it probably doesn't matter. A "Yes" ruling provides a one-hour period where a cleric gets +1 AC and +1 to saves for the price of a level 2 spell after touching him / her self while wearing two platinum rings. A "No" ruling means the cleric uses the 2d level slot on something else.
---
Analysis of the Spell to Support the No Answer (Specific over General)
======================================================================
>
> Casting Time: 1 action
>
> Range: Touch
>
> Components: V, S, M (a pairof platinum rings worth at least 50 gp each, **which *you and the target must wear* for the duration**)
>
>
>
The italicized text implies two creatures -- a caster and a target -- each wearing a platinum ring, but it does not state that explicitly in this part of the spell description.
>
> This spell wards a willing creature you touch and creates a mystic connection between you and the target until the spell ends.
>
>
>
"A willing creature" isn't necessarily only "another willing creature," so one can argue that the caster is "a willing creature" who can touch his/her self. That said, the second half of the sentence implies two parties being involved: the caster and a target. this spell
>
> ... creates a mystic connection between you and the target until the spell ends.
>
>
>
* "You create a mystic connection with yourself"
is not the same statement as
* "you create a mystic connection between you and (any other different creature than you.)"
The "general rule" arguments about spell targets, self spells, and touch spells seems to have raised its head again. (See a [previous discussion on Paladin Smite spells](https://rpg.stackexchange.com/questions/62330/paladin-smite-spells-and-the-steed-can-either-or-both-trigger-the-damage?s=2%7C1.2883)).
Two parties being involved is the common sense / common usage reading of this spell description.
>
> While **the target is within 60 feet of you,** it gains a +1 bonus to AC and saving throws, and it has resistance to all damage.
>
>
>
We see a second and a third person usage, implying the presence of another creature other than the caster.
>
> Also, each time **it** takes damage, **you** take the same amount of damage.
>
>
>
"You take damage" and "it" takes damage: second person and third person references. Two different persons, to different creatures are damaged.
>
> The spell ends if you drop to 0 hit points or **if you and the target become separated** by more than 60 feet.
>
>
>
The caster reaching a zero-hit-point condition ending a spell is common result. Neither a pro nor con element for this question. Outside edge case magical effects, you can't be separated from yourself so this makes no sense in a case other than two creatures being involved.
>
> It also ends if the spell is cast again on ***either of the connected creatures***. You can also dismiss the spell as an action.
>
>
>
**Creatures**, plural. Two creatures, a caster and a target who needs to be touched while wearing the appropriate platinum ring.
What was **implied** in previous language is **specified** at the end of the spell description. "Either" obviously refers to more than one party/creature.
Conclusion:
===========
By reading the specifics of the spell description, the spell requires two creatures, each wearing the appropriate platinum ring, one touching the other, and both staying within 60' of each other for up to an hour for the spell to provide the damage reduction to recipient of this spell, as well as the AC and Saving throw bonuses.
**No, you can't cast this spell on yourself because it requires two creatures, each wearing that platinum ring, to create the spell effect.** |
13,864 | I always hear a lot about The Rule of Thirds. I'd like to know more about other 'tried-and-true' composition techniques (not special effects) that can make a photo more interesting.
In particular, I'd especially like to know:
* The name of the technique
* Any particular types of settings the technique is particulary useful
* Interesting ways to 'break' the rule | 2011/07/09 | [
"https://photo.stackexchange.com/questions/13864",
"https://photo.stackexchange.com",
"https://photo.stackexchange.com/users/5867/"
] | While this isn't a duplicate, this can essentially be answered by linking to a few questions we've collected regarding other composition techniques (thanks largely to @JayLancePhotography!):
* [Bakker's Saddle](https://photo.stackexchange.com/questions/11450/what-is-bakkers-saddle)
* [Rule of Odds](https://photo.stackexchange.com/questions/11475/what-is-the-rule-of-odds)
* [Diagonal Method](https://photo.stackexchange.com/questions/11060/what-is-the-diagonal-method-and-should-i-use-it-instead-of-the-rule-of-thirds)
* [Golden Ratio](https://photo.stackexchange.com/questions/8965/what-is-the-golden-ratio-and-why-is-it-better-than-the-rule-of-thirds)
Searching the [composition](https://photo.stackexchange.com/questions/tagged/composition) and [composition-basics](https://photo.stackexchange.com/questions/tagged/composition-basics) tag provides a wealth of knowledge. | Apart from rules of thumb like the rule of thirds, there are mand general compositional principles which are generally the same in all art forms, things such as balance, space, pattern, texture, lines and shapes, light and shadow.
Very common compositional techniques in photography that I can think of
* leading lines - leading the viewer's eye through the image
* patterns, and I think even more importantly broken/interrupted patterns
* selective focus or color (attracting attention to the subject by blurring/desaturating the background, I guess vignettes fall into this category
* negative space
* unusual perspectives - images of objects from a viewpoint not usually seen (ant's eye view of a flower or pet), extreme wide angle or tele shots
* framing - leaving space in front of the subject if moving, or looking out of the picture
* with wide angle images, having strong foreground interest
* use of strong contrast, bright objects or bright colors to draw the viewer's eye
* lines - diagonal lines and curves are more "dynamic", while vertical ines imply strenght and horizontal lines are more static and calming
* horizon - generally should not be placed in the center of the image, either the foreground or sky should be given more space - one exception would be water reflections where dead center often works
* in general the main subject should be off centre (rule of thirds or otherwise) but usually needs balancing by other objects
* triangles generally make for strong compositions
I think the best images are ones the attract the eye even when looking at a small thumbnail, and you're not sure what the subject is, but the eye is attracted by a strong pattern, shape or color.
The article below is worth a read. It covers a lot of the above, and more.
[Wikepedia article Composition](http://en.wikipedia.org/wiki/Composition_%28visual_arts%29)
Also, you might want to look into Gestalt Theory, very relevant to photographic composition. For example here: [PDF](http://www.imageinnside.com/wp-content/uploads/2010/09/Gestalt-Theory-and-Photographic-Composition..pdf) |
13,864 | I always hear a lot about The Rule of Thirds. I'd like to know more about other 'tried-and-true' composition techniques (not special effects) that can make a photo more interesting.
In particular, I'd especially like to know:
* The name of the technique
* Any particular types of settings the technique is particulary useful
* Interesting ways to 'break' the rule | 2011/07/09 | [
"https://photo.stackexchange.com/questions/13864",
"https://photo.stackexchange.com",
"https://photo.stackexchange.com/users/5867/"
] | While this isn't a duplicate, this can essentially be answered by linking to a few questions we've collected regarding other composition techniques (thanks largely to @JayLancePhotography!):
* [Bakker's Saddle](https://photo.stackexchange.com/questions/11450/what-is-bakkers-saddle)
* [Rule of Odds](https://photo.stackexchange.com/questions/11475/what-is-the-rule-of-odds)
* [Diagonal Method](https://photo.stackexchange.com/questions/11060/what-is-the-diagonal-method-and-should-i-use-it-instead-of-the-rule-of-thirds)
* [Golden Ratio](https://photo.stackexchange.com/questions/8965/what-is-the-golden-ratio-and-why-is-it-better-than-the-rule-of-thirds)
Searching the [composition](https://photo.stackexchange.com/questions/tagged/composition) and [composition-basics](https://photo.stackexchange.com/questions/tagged/composition-basics) tag provides a wealth of knowledge. | For interesting ways to break a rule, learn why the rule works and break it when you want to achieve opposite effect. For example, break the [rule of odds](https://photo.stackexchange.com/q/11475/4390) when you want to stress symmetry and dullness of a scene. |
13,864 | I always hear a lot about The Rule of Thirds. I'd like to know more about other 'tried-and-true' composition techniques (not special effects) that can make a photo more interesting.
In particular, I'd especially like to know:
* The name of the technique
* Any particular types of settings the technique is particulary useful
* Interesting ways to 'break' the rule | 2011/07/09 | [
"https://photo.stackexchange.com/questions/13864",
"https://photo.stackexchange.com",
"https://photo.stackexchange.com/users/5867/"
] | Apart from rules of thumb like the rule of thirds, there are mand general compositional principles which are generally the same in all art forms, things such as balance, space, pattern, texture, lines and shapes, light and shadow.
Very common compositional techniques in photography that I can think of
* leading lines - leading the viewer's eye through the image
* patterns, and I think even more importantly broken/interrupted patterns
* selective focus or color (attracting attention to the subject by blurring/desaturating the background, I guess vignettes fall into this category
* negative space
* unusual perspectives - images of objects from a viewpoint not usually seen (ant's eye view of a flower or pet), extreme wide angle or tele shots
* framing - leaving space in front of the subject if moving, or looking out of the picture
* with wide angle images, having strong foreground interest
* use of strong contrast, bright objects or bright colors to draw the viewer's eye
* lines - diagonal lines and curves are more "dynamic", while vertical ines imply strenght and horizontal lines are more static and calming
* horizon - generally should not be placed in the center of the image, either the foreground or sky should be given more space - one exception would be water reflections where dead center often works
* in general the main subject should be off centre (rule of thirds or otherwise) but usually needs balancing by other objects
* triangles generally make for strong compositions
I think the best images are ones the attract the eye even when looking at a small thumbnail, and you're not sure what the subject is, but the eye is attracted by a strong pattern, shape or color.
The article below is worth a read. It covers a lot of the above, and more.
[Wikepedia article Composition](http://en.wikipedia.org/wiki/Composition_%28visual_arts%29)
Also, you might want to look into Gestalt Theory, very relevant to photographic composition. For example here: [PDF](http://www.imageinnside.com/wp-content/uploads/2010/09/Gestalt-Theory-and-Photographic-Composition..pdf) | For interesting ways to break a rule, learn why the rule works and break it when you want to achieve opposite effect. For example, break the [rule of odds](https://photo.stackexchange.com/q/11475/4390) when you want to stress symmetry and dullness of a scene. |
46,659 | [This question](https://meta.stackexchange.com/questions/49550/why-am-i-getting-welcome-to-stack-overflow-visit-your-user-page-to-set-your-nam) was just migrated from SO, and it brought the restricted `[faq]` tag with it. Now no one but a moderator can remove this tag.
Restricted tags\* should be stripped from the question when it is migrated.
\*And blacklisted tags, when [this feature](https://meta.stackexchange.com/questions/19018/implement-a-tag-black-list) is implemented in 6 to 8 weeks | 2010/04/14 | [
"https://meta.stackexchange.com/questions/46659",
"https://meta.stackexchange.com",
"https://meta.stackexchange.com/users/132636/"
] | Great suggestion - no need to overwhelm the mods :)
This will be deployed either tonight or in tomorrow's push. | How about letting Community user drop all the moderator-only tags and add `support` tag as new revision, once a question is migrated to meta. |
73,175 | There are two different stories of how King Arthur received his sword, Excalibur. The first is that he pulled it out of an anvil or stone slab (and by doing so confirmed that he was the rightful king of the land). The second is that he received it from the Lady of the Lake (and that he had to return it to her before he died).
Which one of these stories is correct? Or did King Arthur have two different swords that he got different ways? | 2014/11/21 | [
"https://scifi.stackexchange.com/questions/73175",
"https://scifi.stackexchange.com",
"https://scifi.stackexchange.com/users/-1/"
] | The Excalibur problem is that, over time, people have combined two different Arthurian swords into a single blade. This is a serious pet-peeve of mine.
* **Sword # 1:** "Clarent", the sword in the stone. It was used in Ceremonies (e.g. the dubbing of knights). This sword designates Arthur as being rightful heir of Uthur.
* **Sword # 2:** "Excalibur/Caliburn", given to Arthur by the Lady of the Lake, and Arthur's sword for battle. This sword grants the divine right to rule England.
Most popular depictions (especially in recent years) tend just to use one sword or the other and call it Excalibur. However, some find a way of placing the sword in the position of both: e.g. the Lady of the Lake puts it into the stone, or something to that effect.
Older texts, however, *do* make the distinction clear even if it's a "blink and you miss it" moment. For example, a sentence saying that the sword in the stone was fragile, and couldn't be used for combat, so Arthur went to the Lady of the Lake for a new one.
In the medieval "Alliterative Morte d'Arthur" the roles of Arthur having the two swords is actually really important: Part of Mordred's coup involves stealing Clarent (establishing that he has the mortal right to rule by laws of men) in addition to kidnapping/"marrying" the queen. The final battle involves Arthur, wielding Excalibur (divine right to rule), versus Mordred, wielding Clarent. The two then destroy each other.
I really hope this helped clear things up for you. I'd recommend starting with Geoffrey of Monmouth and working your way through medieval texts to see the evolution of the depiction of Arthur's swords. | The short version is that both of those swords are Excalibur. *Le Morte D'Artur* is, to be blunt, incredibly self-contradictory in places. Malory took a number of existing stories and collected them without always concerning himself with conflicts between them.
[From Wikipedia](http://en.wikipedia.org/wiki/Excalibur)
>
> In Robert de Boron's Merlin, Arthur obtained the throne by pulling a sword from a stone. In this account, the act could not be performed except by "the true king," meaning the divinely appointed king or true heir of Uther Pendragon. This sword is thought by many to be the famous Excalibur, and its identity is made explicit in the later so-called Vulgate Merlin Continuation, part of the Lancelot-Grail cycle. However, in what is sometimes called the Post-Vulgate Merlin, Excalibur was given to Arthur by the Lady of the Lake sometime after he began to reign. She calls the sword "Excalibur, that is as to say as Cut-steel." In the Vulgate Mort Artu, Arthur orders Griflet to throw the sword into the enchanted lake.
>
>
> |
73,175 | There are two different stories of how King Arthur received his sword, Excalibur. The first is that he pulled it out of an anvil or stone slab (and by doing so confirmed that he was the rightful king of the land). The second is that he received it from the Lady of the Lake (and that he had to return it to her before he died).
Which one of these stories is correct? Or did King Arthur have two different swords that he got different ways? | 2014/11/21 | [
"https://scifi.stackexchange.com/questions/73175",
"https://scifi.stackexchange.com",
"https://scifi.stackexchange.com/users/-1/"
] | The short version is that both of those swords are Excalibur. *Le Morte D'Artur* is, to be blunt, incredibly self-contradictory in places. Malory took a number of existing stories and collected them without always concerning himself with conflicts between them.
[From Wikipedia](http://en.wikipedia.org/wiki/Excalibur)
>
> In Robert de Boron's Merlin, Arthur obtained the throne by pulling a sword from a stone. In this account, the act could not be performed except by "the true king," meaning the divinely appointed king or true heir of Uther Pendragon. This sword is thought by many to be the famous Excalibur, and its identity is made explicit in the later so-called Vulgate Merlin Continuation, part of the Lancelot-Grail cycle. However, in what is sometimes called the Post-Vulgate Merlin, Excalibur was given to Arthur by the Lady of the Lake sometime after he began to reign. She calls the sword "Excalibur, that is as to say as Cut-steel." In the Vulgate Mort Artu, Arthur orders Griflet to throw the sword into the enchanted lake.
>
>
> | Caliburn was the sword in the stone, but was broken by Clarent during the battle between Arthur and his illegitimate son Mordred. Excalibur was given to Arthur by the Lady of the Lake in order to defeat Mordred, and it became Arthur's second sword while Caliburn was said to not only declare the one true king of England but was supposedly unbeatable as long as the wielder's heart was pure.
Arthur's heart grew dark from his hatred towards his step-sister, Morgan le Fay, and that's why the sword broke. Excalibur was made to be the opposite to Clarent, therefore becoming the sword of ice while Clarent was the sword of fire.
These are the major differences between the three swords |
73,175 | There are two different stories of how King Arthur received his sword, Excalibur. The first is that he pulled it out of an anvil or stone slab (and by doing so confirmed that he was the rightful king of the land). The second is that he received it from the Lady of the Lake (and that he had to return it to her before he died).
Which one of these stories is correct? Or did King Arthur have two different swords that he got different ways? | 2014/11/21 | [
"https://scifi.stackexchange.com/questions/73175",
"https://scifi.stackexchange.com",
"https://scifi.stackexchange.com/users/-1/"
] | The Excalibur problem is that, over time, people have combined two different Arthurian swords into a single blade. This is a serious pet-peeve of mine.
* **Sword # 1:** "Clarent", the sword in the stone. It was used in Ceremonies (e.g. the dubbing of knights). This sword designates Arthur as being rightful heir of Uthur.
* **Sword # 2:** "Excalibur/Caliburn", given to Arthur by the Lady of the Lake, and Arthur's sword for battle. This sword grants the divine right to rule England.
Most popular depictions (especially in recent years) tend just to use one sword or the other and call it Excalibur. However, some find a way of placing the sword in the position of both: e.g. the Lady of the Lake puts it into the stone, or something to that effect.
Older texts, however, *do* make the distinction clear even if it's a "blink and you miss it" moment. For example, a sentence saying that the sword in the stone was fragile, and couldn't be used for combat, so Arthur went to the Lady of the Lake for a new one.
In the medieval "Alliterative Morte d'Arthur" the roles of Arthur having the two swords is actually really important: Part of Mordred's coup involves stealing Clarent (establishing that he has the mortal right to rule by laws of men) in addition to kidnapping/"marrying" the queen. The final battle involves Arthur, wielding Excalibur (divine right to rule), versus Mordred, wielding Clarent. The two then destroy each other.
I really hope this helped clear things up for you. I'd recommend starting with Geoffrey of Monmouth and working your way through medieval texts to see the evolution of the depiction of Arthur's swords. | Caliburn was the sword in the stone, but was broken by Clarent during the battle between Arthur and his illegitimate son Mordred. Excalibur was given to Arthur by the Lady of the Lake in order to defeat Mordred, and it became Arthur's second sword while Caliburn was said to not only declare the one true king of England but was supposedly unbeatable as long as the wielder's heart was pure.
Arthur's heart grew dark from his hatred towards his step-sister, Morgan le Fay, and that's why the sword broke. Excalibur was made to be the opposite to Clarent, therefore becoming the sword of ice while Clarent was the sword of fire.
These are the major differences between the three swords |
10,067 | For bikes like [these](http://www.herocycles.com/images/octane-recra.jpg), why aren't the rear shocks (the shocks are directly above the pedal) vertical like those of a motorcycle? I don't see how the bike can take shocks when the shock absorber is at such a low angle.
A friend said the mud-guard is so high because there's no other way to attach it to the cycle at a lower height. Is that really the reason why the mud-guard is so high? | 2012/06/26 | [
"https://bicycles.stackexchange.com/questions/10067",
"https://bicycles.stackexchange.com",
"https://bicycles.stackexchange.com/users/4393/"
] | From my understanding, one of the major features for bicycle suspension is vertical travel. This is to increase pedal efficiency and rear wheel feel. This is why you see engineers jump through hoops when designing rear suspension for bicycles. For example, take a look at the [Pivot Mach 429](http://www.29eronline.com/wp-content/uploads/2009/01/side-view-pivot-convert.jpg). If I count correctly, this bike has 5 points of rotation to accomplish beter pedal efficiency as well as offering more rear-wheel travel. Some motorcycles do have non-vertical mounted suspension as well; the first to come to mind is the [Kawasaki Ninja 650](http://www.motosavvy.com/_ImageAreas/Kawasaki650R-3.jpg).
As for the "mud-guard", that is often referred to as a [filth prophylactic](http://bikesnobnyc.blogspot.com/search?q=filth%20prophylactic). This isn't intended to do much more than keep mud off your shirt and backside. [Full fenders](http://cdn1.media.cyclingnews.futurecdn.net/2011/02/26/2/cielo_sportif_full_view_600.jpg) can be quite difficult to mount to a full-suspension bike (everything keeps moving, man!) so filth prophylactics are common "good enough" equipment. They also tend to have very little in frame requirements (full fenders require braze-ons for mounting them), so they fit on most any bike. | What's above the rear wheel for vertical shocks to mount to?
It's pretty clear from the provided picture that the fulcrum for the rear wheel is near the bottom bracket. An upward force against the rear wheel will cause it to lift, reducing the distance between it and the mount point of the shock, allowing the shock to resist that movement. |
10,067 | For bikes like [these](http://www.herocycles.com/images/octane-recra.jpg), why aren't the rear shocks (the shocks are directly above the pedal) vertical like those of a motorcycle? I don't see how the bike can take shocks when the shock absorber is at such a low angle.
A friend said the mud-guard is so high because there's no other way to attach it to the cycle at a lower height. Is that really the reason why the mud-guard is so high? | 2012/06/26 | [
"https://bicycles.stackexchange.com/questions/10067",
"https://bicycles.stackexchange.com",
"https://bicycles.stackexchange.com/users/4393/"
] | What's above the rear wheel for vertical shocks to mount to?
It's pretty clear from the provided picture that the fulcrum for the rear wheel is near the bottom bracket. An upward force against the rear wheel will cause it to lift, reducing the distance between it and the mount point of the shock, allowing the shock to resist that movement. | The rear wheel is attached to stays that connect to a pivot point. As long as when the rear wheel moves upwards, the wheel and stays all rotate around the pivot to compress (or stretch, depending on shock type) the shock, then the rear suspension should work fine.
Take a look at this bike, the shock is vertical. But, unlike the picture you showed, there are a number of pivot points. The bike you showed has a single pivot near the crank and pedal area. <http://www.dirtragmag.com/sites/default/files/blogarific/wp-content/uploads/2007/06/trek-fuel-ex-full.jpg>
The mudguard is high so that the wheel doesn't hit it and to ensure there is plenty of mud clearance. Most mountain bikers I know don't bother with mudguards, because the faff of them is annoying (it's not because of lack of mud, I'm in the UK and it can get pretty muddy at times). So, they're usually not fitted to mountain bikes as standards. That means, this one has to be fitted to the seat tube, and it doesn't move with the wheel as it takes up shocks. |
10,067 | For bikes like [these](http://www.herocycles.com/images/octane-recra.jpg), why aren't the rear shocks (the shocks are directly above the pedal) vertical like those of a motorcycle? I don't see how the bike can take shocks when the shock absorber is at such a low angle.
A friend said the mud-guard is so high because there's no other way to attach it to the cycle at a lower height. Is that really the reason why the mud-guard is so high? | 2012/06/26 | [
"https://bicycles.stackexchange.com/questions/10067",
"https://bicycles.stackexchange.com",
"https://bicycles.stackexchange.com/users/4393/"
] | From my understanding, one of the major features for bicycle suspension is vertical travel. This is to increase pedal efficiency and rear wheel feel. This is why you see engineers jump through hoops when designing rear suspension for bicycles. For example, take a look at the [Pivot Mach 429](http://www.29eronline.com/wp-content/uploads/2009/01/side-view-pivot-convert.jpg). If I count correctly, this bike has 5 points of rotation to accomplish beter pedal efficiency as well as offering more rear-wheel travel. Some motorcycles do have non-vertical mounted suspension as well; the first to come to mind is the [Kawasaki Ninja 650](http://www.motosavvy.com/_ImageAreas/Kawasaki650R-3.jpg).
As for the "mud-guard", that is often referred to as a [filth prophylactic](http://bikesnobnyc.blogspot.com/search?q=filth%20prophylactic). This isn't intended to do much more than keep mud off your shirt and backside. [Full fenders](http://cdn1.media.cyclingnews.futurecdn.net/2011/02/26/2/cielo_sportif_full_view_600.jpg) can be quite difficult to mount to a full-suspension bike (everything keeps moving, man!) so filth prophylactics are common "good enough" equipment. They also tend to have very little in frame requirements (full fenders require braze-ons for mounting them), so they fit on most any bike. | The fender or "mud guard" is so high because if it was much lower the tire would be banging into it whenever the shock compressed. |
10,067 | For bikes like [these](http://www.herocycles.com/images/octane-recra.jpg), why aren't the rear shocks (the shocks are directly above the pedal) vertical like those of a motorcycle? I don't see how the bike can take shocks when the shock absorber is at such a low angle.
A friend said the mud-guard is so high because there's no other way to attach it to the cycle at a lower height. Is that really the reason why the mud-guard is so high? | 2012/06/26 | [
"https://bicycles.stackexchange.com/questions/10067",
"https://bicycles.stackexchange.com",
"https://bicycles.stackexchange.com/users/4393/"
] | From my understanding, one of the major features for bicycle suspension is vertical travel. This is to increase pedal efficiency and rear wheel feel. This is why you see engineers jump through hoops when designing rear suspension for bicycles. For example, take a look at the [Pivot Mach 429](http://www.29eronline.com/wp-content/uploads/2009/01/side-view-pivot-convert.jpg). If I count correctly, this bike has 5 points of rotation to accomplish beter pedal efficiency as well as offering more rear-wheel travel. Some motorcycles do have non-vertical mounted suspension as well; the first to come to mind is the [Kawasaki Ninja 650](http://www.motosavvy.com/_ImageAreas/Kawasaki650R-3.jpg).
As for the "mud-guard", that is often referred to as a [filth prophylactic](http://bikesnobnyc.blogspot.com/search?q=filth%20prophylactic). This isn't intended to do much more than keep mud off your shirt and backside. [Full fenders](http://cdn1.media.cyclingnews.futurecdn.net/2011/02/26/2/cielo_sportif_full_view_600.jpg) can be quite difficult to mount to a full-suspension bike (everything keeps moving, man!) so filth prophylactics are common "good enough" equipment. They also tend to have very little in frame requirements (full fenders require braze-ons for mounting them), so they fit on most any bike. | The rear wheel is attached to stays that connect to a pivot point. As long as when the rear wheel moves upwards, the wheel and stays all rotate around the pivot to compress (or stretch, depending on shock type) the shock, then the rear suspension should work fine.
Take a look at this bike, the shock is vertical. But, unlike the picture you showed, there are a number of pivot points. The bike you showed has a single pivot near the crank and pedal area. <http://www.dirtragmag.com/sites/default/files/blogarific/wp-content/uploads/2007/06/trek-fuel-ex-full.jpg>
The mudguard is high so that the wheel doesn't hit it and to ensure there is plenty of mud clearance. Most mountain bikers I know don't bother with mudguards, because the faff of them is annoying (it's not because of lack of mud, I'm in the UK and it can get pretty muddy at times). So, they're usually not fitted to mountain bikes as standards. That means, this one has to be fitted to the seat tube, and it doesn't move with the wheel as it takes up shocks. |
10,067 | For bikes like [these](http://www.herocycles.com/images/octane-recra.jpg), why aren't the rear shocks (the shocks are directly above the pedal) vertical like those of a motorcycle? I don't see how the bike can take shocks when the shock absorber is at such a low angle.
A friend said the mud-guard is so high because there's no other way to attach it to the cycle at a lower height. Is that really the reason why the mud-guard is so high? | 2012/06/26 | [
"https://bicycles.stackexchange.com/questions/10067",
"https://bicycles.stackexchange.com",
"https://bicycles.stackexchange.com/users/4393/"
] | The fender or "mud guard" is so high because if it was much lower the tire would be banging into it whenever the shock compressed. | The rear wheel is attached to stays that connect to a pivot point. As long as when the rear wheel moves upwards, the wheel and stays all rotate around the pivot to compress (or stretch, depending on shock type) the shock, then the rear suspension should work fine.
Take a look at this bike, the shock is vertical. But, unlike the picture you showed, there are a number of pivot points. The bike you showed has a single pivot near the crank and pedal area. <http://www.dirtragmag.com/sites/default/files/blogarific/wp-content/uploads/2007/06/trek-fuel-ex-full.jpg>
The mudguard is high so that the wheel doesn't hit it and to ensure there is plenty of mud clearance. Most mountain bikers I know don't bother with mudguards, because the faff of them is annoying (it's not because of lack of mud, I'm in the UK and it can get pretty muddy at times). So, they're usually not fitted to mountain bikes as standards. That means, this one has to be fitted to the seat tube, and it doesn't move with the wheel as it takes up shocks. |
8,450,027 | I have a C app (VStudio 2010, win7 64bit) running on a machine with dual xeon chips, meaning 12 physical and 24 logical cores, and 192 gig of ram.
EDIT: THE OS is win7 (ie, Windows 7, 64 bit).
The app has 24 threads (each thread has its own logical core) doing calculations and filling up a different part of a massive C structure. The structure, when all the threads are finished (and the threads are all perfectly balanced so they complete at the same time), is about 60 gigabytes.
(I have control over the hardware setup, so I am going to be using 6 2tb drives running RAID 0, which means the physical limits on writing will be approximately 6x the average sequential write speed, or about 2 gig/second.)
What is the most efficient way to get this to disk? Obviously, the i/o time will dwarf the compute time. From my research on this topic, it seems like write() (as opposed to fwrite()) is the way to go. But what other optimizations can I do on the software side, in terms of setting buffer sizes, etc. Would mmap be more efficient? | 2011/12/09 | [
"https://Stackoverflow.com/questions/8450027",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/994179/"
] | It is hard to judge the best thing for your situation.
The first optimization to make is to preallocate the file. That way your file system does not need to keep extending its size. That should optimize some disk operations. However, avoid writing actual zeros to disk. Just set the length.
Then you have choices between mmap and write. This also depends on the operating system you use. On a Unix I would try both mmap and pwrite. pwrite is useful because each of your threads can write into the file at the desired file position without fighting over file offsets.
mmap could be good because instead of making copies into file cache, your threads would be writing directly into file cache. 60 GB is probably too large to mmap the entire file, so each thread will likely need its own mmap window onto the file which it can move around.
In Windows you would probably want to try using overlapped, asynchronous IO. That can only be done with Win32 API calls. | mmap(), or [boost mmap](http://www.boost.org/doc/libs/1_41_0/libs/iostreams/doc/classes/mapped_file.html) is almost always the best approach. The OS is smarter than you, let it worry about what to cache!
You didn't say what OS, but on Linux the [madvise](http://www.gnu.org/s/hello/manual/libc/Memory_002dmapped-I_002fO.html), or equivalent boost hints can really boost performance. |
359,448 | I need to place a Wifi surveillance camera near the entrance of my house where no power outlet is in that area.
I pulled a wire wrapping wire (awg 30) to the target location without thinking about wire resistance. And as you all expected, it didn't able to power the webcam.
The power the camera uses is 5V @ 1A.
I measured the wire resistance of my awg 30 wire to the location is 11 ohms (to and from) which is 6 ohms one way which is around 50 ft.
So my question is what is the minimum gauge I need to use to be able to power my webcam placed 50ft away from the USB power adapter?
Or how many awg30 wires I need to pull to lower the resistance to allow enough power to pass through?
I assume the common practice is that the voltage drop is less than 5% of the required voltage.
So 5% of 5V is 0.25V
R=V/I so to allow 1A to pass through the resistance should be 0.25V/1A = 0.25ohms.
From the chart:
<https://www.cirris.com/learning-center/calculators/133-wire-resistance-calculator-table>?
Therefore I need a minimum of one 14 Gauge wire (or a bundle of fifty awg 30 wires LOL) to power the webcam 50ft way? | 2018/03/03 | [
"https://electronics.stackexchange.com/questions/359448",
"https://electronics.stackexchange.com",
"https://electronics.stackexchange.com/users/179935/"
] | If you really need to know, you should look into simulation.
You should also edit your question to include the signaling speed or edge rate of the signals.
But I think there is a good chance you will get away with it. Diff pairs primarily couple to the adjacent plane. They don't couple edge-wise to each other very much. So the deviation in spacing will have minimal effect on the differential impedance. The critical thing for differential pairs is to match length.
A few times I have done boards where I violated spacing rules in one or two places to help escape from a BGA. This did not incur major cost increase for the board. This was in high volume production.
So you possibly can route most of the board using 5/5 rules, and use 3 mil spacing only in the area where you escape from the BGA. This may not be a problem for the board vendor. You could investigate that. | If that region of discontinuityis << wavelength, then you are OK.
If your edges are 1nanosecond Trise, Tfall, and that region of bad Z\_diff is 50 picoseconds ( < 5% of the edge time) you will be OK.
And even the edge gets upset, the DATA EYE is what is important. 100pS upset in a 5nanosecond-long data-eye will be fine; the reflections will have long faded away before the receiver-clock strobes the receiver FlipFlop to make a decision.
=====================================
And if the reflections should occur in such a way as to increase the data-eye, like would be even better.
Beware of the signal energy stored in the ESD structures and the leadframe inductance of the package. Its is ISI -- inter Symbol Interference --- and may improve or may degrade the data-eye. |
5,479,106 | OK, so I thought I was solving a problem and I created an even bigger one. I was trying to get rid of a lingering reference to `MySql` and deleted a bunch of files from the Temporary ASP.NET files directory. Now, when I try to run the ASP.NET configuration tool I get this, reprinted in its full glory:
>
> System.InvalidCastException: [A]System.Web.Administration.WebAdminRemotingManager cannot be cast to [B]System.Web.Administration.WebAdminRemotingManager. Type A originates from 'App\_Code.eyfytrpm, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' in the context 'Default' at location 'C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\asp.netwebadminfiles\1f61ecce\354a2473\App\_Code.eyfytrpm.dll'. Type B originates from 'App\_Code.y-perhho, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' in the context 'Default' at location 'C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\asp.netwebadminfiles\1f61ecce\354a2473\App\_Code.y-perhho.dll'. at System.Web.Administration.WebAdminPage.get\_RemotingManager() at System.Web.Administration.WebAdminPage.SaveConfig(Configuration config) at System.Web.Administration.WebAdminPage.VerifyAppValid()
>
>
>
Apparently those temporary files weren't as temporary as I thought they were. Is there any way to regenerate those files, or any other way to work around this.
I really shot myself in the foot this time.. :( | 2011/03/29 | [
"https://Stackoverflow.com/questions/5479106",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/83678/"
] | To answer my own question...
I wound up changing the Apache file /etc/apache/sites-available/default from AllowOverRide = None to AllowOverRide = All. | have you also tried
RewriteBase /
or RewriteBase /simple/
or along those lines?
in my dealings on servers i've used, i've never had to put the domain into the rewrite base. Just the folders |
150,327 | A lot of universities are expecting not to be able to run in-person exams for at least part of the 2020/21 academic year. I believe, for example, that no UK universities is currently planning to hold in-person exams this coming January. I can see how other forms of assessment might be possible for some subjects. But I can't see how this can work for math.
>
> For those universities which will not run math exams in-person for this
> coming year, what are the plans for how to replace them?
>
>
> | 2020/06/10 | [
"https://academia.stackexchange.com/questions/150327",
"https://academia.stackexchange.com",
"https://academia.stackexchange.com/users/37765/"
] | Here are some examples of how it is done at the University of Copenhagen for the two courses that I have exams in next week.
One course has a written exam: We are given a problem sheet that we write up a solution to and submit to an online portal after a time limit of four hours. We are allowed to use the internet and any other aids we wish, except that we are not allowed to communicate with other people.
Another course has a verbal exam: A verbal exam is performed using Zoom. There is no preparation time.
Both courses were intended to be verbal exams pre-covid-19. | It's not possible to give a universal answer, of course, as that depends on many factors: how many people are available to grade, how many students need to pass the course (solutions that work for 20 students may not work for 200), what technological solutions are available… In our department somewhere in France, the solutions adopted for the various exams are:
* A normal homework, sent electronically by taking a picture of the answers, graded normally, with a long delay (a week or so) to complete. For very low level courses it's also possible to have a fully online exam, with multiple choice questions and short answers.
* A timed exam. This can be the same time for all students, common for low level courses where copying others' answers is trivial. Or it can be an exam available during a whole day, and when the student downloads the exam they are put on a timer and must give back their answers before a time limit (a few hours).
* Oral examinations using visioconference tools. The students connects with the examiner and gets asked questions, usually with the help of a virtual whiteboard.
* A hybrid method: students are given a timed exam, which is then graded (takes a few days). Then students pass a short oral exam about the content of the written exam. Depending on the size of the class, this can either be all students, or students who got above a certain grade on the written exam (to avoid "wasting" time on students who have no chance of passing regardless of how well they perform on the oral exam). The goal is try and bump up students, and detect some cheating.
My preference goes towards the last item, but it's a significant time investment, much more so than a traditional handwritten exam. It takes a lot of organization, there is a lot of cheating anyway, technical issues arise all the time for the video chat, the exam needs to be specially designed...
After a department-wide meeting, we have pretty much all agreed that there was no good solution anyway. Maybe someone here has a better one... |
164,128 | Would you be kind enough to explain the nuance between "pitiful" and "pitiable"? My Oxford Advanced Learner's Dictionary shows two similar meanings for the aforementioned words.
1. deserving pity or causing you to feel pity.
2. not deserving respect
I am confused as to why there are two different adjectives with almost the similar meaning and examples. | 2014/04/16 | [
"https://english.stackexchange.com/questions/164128",
"https://english.stackexchange.com",
"https://english.stackexchange.com/users/70234/"
] | I'd say that pitiful might be either of those two definitions (you use context to know which is being used), but pitiable is only the first.
A coach might tell his team "Your guys on defense were pitiful today". He's telling them that they did a bad job. But you would never use pitiable there. | I would distinguish them as
**Pitiable** is something evocative of pity or sympathy, but not necessarily in a bad condition
**Pitiful** is something deserving of pity, and disadvantaged in some way
Consider a cute kitten giving an imploring look in a picture - she is **pitiable** and you mentally go 'aww, what a cute & weak creature, let me fuss over it!' even though its perfectly fine and not *pitiful*.
Now consider a thief or molestor who got beaten to a pulp by a crowd. He's in a **pitiful** condition with multiple fractures, but your initial response might be vindication rather than sympathy; he's not *pitiable*. |
16,723 | So I have six eight years of trial-and-error evidence to show that I am incapable of building strength to any measurable degree from any form of exercise. I do not show results and I have become tired of working out for no reason. I have put it all to an end and I am seeking alternative ways to build strength. One person told me he can genetically-alter my muscle cells and fibers to enable more strength without exercise - is this possible?
Another method I heard is heavily taking anabolic steroids, which supposedly can build strength even without exercise. At this point I am considering steroid-abuse if it means possible results I can appreciate.
I have never appreciated or have been satisfied with results from any workout program or routine over any period of time, and do not progress no matter what. I do not even wish to seek an expert as alternative approaches is what I am looking for.
Please let me know on any other possible ways that strength can be increased without exercise, since exercise does not work for me -- I have tried everything you can think of and after 8 years I am still where I started at 14.
A 22 year old man who is out lifted by small teenagers who barely workout ... I am a shame of a man and person overall. | 2014/06/05 | [
"https://fitness.stackexchange.com/questions/16723",
"https://fitness.stackexchange.com",
"https://fitness.stackexchange.com/users/8807/"
] | Stop Making Excuses
-------------------
>
> "I have six [to] eight years of trial-and-error evidence to show that I am incapable of building strength to any measurable degree from any form of exercise."
>
>
>
Either you have a serious medical issue or I call bullshit. I bet the reason you're not getting results is that you *"have [never] been satisfied with results from any workout program or routine over any period of time".* You try something halfheartedly for a little while, then stop, right? You just lift what you feel like and then go home? [That's not going to work.](http://www.t-nation.com/free_online_article/most_recent/the_biggest_training_fallacy_of_all&cr=)
If you think you have a serious medical issue then see a doctor about your health, particularly any possible hormone issues. Stop making up reasons not to see a medical professional. Address your problem head-on.
Lift, Eat, Repeat
-----------------
You must [lift and eat](https://fitness.stackexchange.com/a/6836/1771) if you want to be big and strong. You must work hard. You must be consistent. There is no other way. There are no excuses. There are no alternative methods. Buck up and be serious about your training.
Stop being concerned about other people's success and focus on your own progress. You know nothing about what they do. What they do has nothing to do with your own success or failure. Stop distracting yourself with fantasies about other people's supposedly quick and easy results and focus on working out hard and consistently.
Follow a Program
----------------
*Originally I asked the OP to detail their workouts. ("If you want help on how to make your workouts effective, describe what you've been doing in as much detail as you possibly can: programs, lifts, sets, reps, rest periods, weights, frequency per week, diet, sleep. If you can't be bothered to even write a short description of your lifting then I seriously doubt your commitment to your project.") They have since responded:*
>
> I do not really follow any programs; I just lift stuff. Plenty get strong this way, so what is wrong with me?
>
>
>
You have [fuckarounditis](http://www.leangains.com/2011/09/fuckarounditis.html). I would sympathize, but it's hard when you seem more interested in whinging about other people than actually doing something productive. There are genetic freaks who can sit on a couch for ten years and still lift 400 pounds. They aren't me, so why would I do what they do? I am me. I do what works for me. You are you. You can do what would work for you.
Some people can get away with not doing a program. Most people can't. Stop making excuses and pick a program. StrongLifts would be fine, as would Starting Strength, as would 5/3/1 or GreySkull Linear Progression. Pick one of those four--it really doesn't matter which--and follow it unerringly for six months. Keep a workout log. Eat and sleep right. If you do that and it doesn't work, then you will *know* why it didn't work, because you will see it in the log. Skipped workouts or failed lifts will be quite evident in the log.
If you are interested in results--and that's a big *if*--then you'll pick a program, follow it, focus on quality sleep, and eat plenty of good food. (You have not described your diet so we can't yet help on that front.) | >
> A 22 year old man who is out lifted by small teenagers who barely
> workout ... I am a shame of a man and person overall.
>
>
>
With that attitude, what you are experiencing is not that strange. When thoughts of that kind manifest in your mind, notice that they don't serve you, and are not even logical (why would your worthiness/value have anything to do with people you don't even know?). They are not even your ideas, but someone else's. Your environment (culture) has implanted detri-mental ideas into your unconscious. So why give them credence? The more you believe your negative thoughts, the more negative results you will experience. I suggest you get rid of your TV and learn to meditate. And then, if you still experience negative thoughts of self-doubt, perhaps have an entheogenic experience that might help you shed the baggage.
Addressing your perception of (what you have defined as) your problem should be your primary focus. Without addressing your negative thoughts (i.e. your state of being), you will continue to experience a negative reality, no matter what exercises you do.
With that said, thinking about exogenous steroids is a very bad idea in your case, I think. You want to read about endogenous growth factors instead (HGH, BDNF, etc). Consider supplements that decrease metabolic rate and increase growth factors. You'll have to spend the time to research this though; you ought to understand how they work. There is no single magical pill. Consider also meditation, as mentioned, and high-intensity exercises, like HIIT. There is no better way to make your body grow (via HGH) than HIIT (followed by a high-quality whey protein shake), and it requires very little of your time.
Consider also steering your diet toward a high-fat low-carb diet. It may seem contradictory but that's because of the failure to understand the metabolic role of fructose, and the falsehoods spread long ago by one Dr. Ancel Keys that began the baseless demonization of dietary fats (particularly saturated fats), which are actually your body's preferred source of fuel.
Personally, I only began to gain weight/muscle when slowing my metabolism and increasing growth factors using the methods above. I didn't include any links because if you really are determined you can simply google everything. |
16,723 | So I have six eight years of trial-and-error evidence to show that I am incapable of building strength to any measurable degree from any form of exercise. I do not show results and I have become tired of working out for no reason. I have put it all to an end and I am seeking alternative ways to build strength. One person told me he can genetically-alter my muscle cells and fibers to enable more strength without exercise - is this possible?
Another method I heard is heavily taking anabolic steroids, which supposedly can build strength even without exercise. At this point I am considering steroid-abuse if it means possible results I can appreciate.
I have never appreciated or have been satisfied with results from any workout program or routine over any period of time, and do not progress no matter what. I do not even wish to seek an expert as alternative approaches is what I am looking for.
Please let me know on any other possible ways that strength can be increased without exercise, since exercise does not work for me -- I have tried everything you can think of and after 8 years I am still where I started at 14.
A 22 year old man who is out lifted by small teenagers who barely workout ... I am a shame of a man and person overall. | 2014/06/05 | [
"https://fitness.stackexchange.com/questions/16723",
"https://fitness.stackexchange.com",
"https://fitness.stackexchange.com/users/8807/"
] | If exercise really would not work then your muscles should have wasted away by now and you would not be able to get out of bed. Astronauts who stay on board the ISS for more than a few weeks have to work very hard to compensate for not having to carry their body weights all day long.
So, your muscles are able to repair themselves and maintain the strength needed to do your daily tasks. But it would be an enormous coincidence if this would be precisely the limit of your maximum muscle strength. Given your age (you are not 90 years old), that would be extremely unlikely anyway. So, you will get stronger if you do some exercise. | I have had a problem with the confidence and energy(visible as enthusiasm) which allow me to exercise and feel good until recently and I believe it was diet and sleep related. Because it sounds as though confidence and enthusiasm are likely a large part of your problem, I suggest getting at least 30 grams of protein (even better, the US government's recommended 50 grams per day) and try to sleep eight hours.
Separately, it sounds like you might have a shame issue with working out so that you don't exhaust your muscles fully(to failure) in public. Perhaps you are embarrassed to be seen struggling with what you consider light weight? To remedy this issue, you can do exercises that no one can see you do.
Examples include pushups, tricep extensions, curls, and shrugs. Try these with 20lbs. or less and marvel at how your arms shape up. This can be a ten minute super-set every day before you shower in the privacy of your home. If you've tried for eight years, what's the harm in another month with a new tactic?
PS: A super set is one which alternates muscle-groups between sets, thereby letting lactic acid flush from one muscle group while working other muscle groups. |
16,723 | So I have six eight years of trial-and-error evidence to show that I am incapable of building strength to any measurable degree from any form of exercise. I do not show results and I have become tired of working out for no reason. I have put it all to an end and I am seeking alternative ways to build strength. One person told me he can genetically-alter my muscle cells and fibers to enable more strength without exercise - is this possible?
Another method I heard is heavily taking anabolic steroids, which supposedly can build strength even without exercise. At this point I am considering steroid-abuse if it means possible results I can appreciate.
I have never appreciated or have been satisfied with results from any workout program or routine over any period of time, and do not progress no matter what. I do not even wish to seek an expert as alternative approaches is what I am looking for.
Please let me know on any other possible ways that strength can be increased without exercise, since exercise does not work for me -- I have tried everything you can think of and after 8 years I am still where I started at 14.
A 22 year old man who is out lifted by small teenagers who barely workout ... I am a shame of a man and person overall. | 2014/06/05 | [
"https://fitness.stackexchange.com/questions/16723",
"https://fitness.stackexchange.com",
"https://fitness.stackexchange.com/users/8807/"
] | Genetically engineering your muscles? Not in the next decade or two.
Steroids without exercise? No. Steroids increase the protein available to cells, which effectively allows you to work your muscles harder so they grow more.
>
> A 22 year old man who is out lifted by small teenagers who barely workout ... I am a shame of a man and person overall.
>
>
>
Your worth is not measured by how much you can lift.
“Until you value yourself, you won't value your time. Until you value your time, you will not do anything with it. ”
― M. Scott Peck
I suspect your barrier to change is not physical, but in your head. No, I don't think you're crazy, but (speaking from personal experience here) many people believe things about themselves that are not true and cause them to limit themselves drastically. | If exercise really would not work then your muscles should have wasted away by now and you would not be able to get out of bed. Astronauts who stay on board the ISS for more than a few weeks have to work very hard to compensate for not having to carry their body weights all day long.
So, your muscles are able to repair themselves and maintain the strength needed to do your daily tasks. But it would be an enormous coincidence if this would be precisely the limit of your maximum muscle strength. Given your age (you are not 90 years old), that would be extremely unlikely anyway. So, you will get stronger if you do some exercise. |
16,723 | So I have six eight years of trial-and-error evidence to show that I am incapable of building strength to any measurable degree from any form of exercise. I do not show results and I have become tired of working out for no reason. I have put it all to an end and I am seeking alternative ways to build strength. One person told me he can genetically-alter my muscle cells and fibers to enable more strength without exercise - is this possible?
Another method I heard is heavily taking anabolic steroids, which supposedly can build strength even without exercise. At this point I am considering steroid-abuse if it means possible results I can appreciate.
I have never appreciated or have been satisfied with results from any workout program or routine over any period of time, and do not progress no matter what. I do not even wish to seek an expert as alternative approaches is what I am looking for.
Please let me know on any other possible ways that strength can be increased without exercise, since exercise does not work for me -- I have tried everything you can think of and after 8 years I am still where I started at 14.
A 22 year old man who is out lifted by small teenagers who barely workout ... I am a shame of a man and person overall. | 2014/06/05 | [
"https://fitness.stackexchange.com/questions/16723",
"https://fitness.stackexchange.com",
"https://fitness.stackexchange.com/users/8807/"
] | Disregarding the fact that I agree with Dave Liepmann (either you are not training properly or you have a medical condition inhibiting your performance), I will give you a constructive answer. There is one thing you can do to increase strength without training. It is something that elite athletes use, and is one of the main factors that separates the best athletes from the mediocre ones.
Mental imagery.
Mental imagery is the use of imagination to visualize certain movements. Science has shown that visualization of a movement increases activity in those areas of the brain, potentiation through the corticospinal tract (motor neuron axons), and activity of the EMG. All these effects lead to gains in strength (<http://www.ncbi.nlm.nih.gov/pubmed/24133427>, <http://www.ncbi.nlm.nih.gov/pubmed/22127572> etc.).
The increase in strength comes about by two factors. Firstly, there is increased intra- and intermuscular coordination. That is, by visualizing a movement, your brain is getting used to the sequence of contractions between the muscles and inside them. Secondly, the areas of the brain controlling that movement get increased activity, and this leads to long term changes in activity (sort of like learning to ride a bike, and then remembering; someone who has squatted 300 pounds in their youth will be a stronger squatter than the average person even in old age). | It can be a medical condition like growth hormone deficiency or testosteron deficiency, which you probably won't be able to get confirmed by a normal doctor.
Also the mental problems you have with it, feeling unworthy etc, can also stem from there, so balancing your body hormones would be a good first start. (assuming there is a medical condition)
You can find doctors specialized in so called anti-aging (e.g. Dr. Hertoghe and colleagues from Belgium) or men medicine who can help you diagnose and treat such a deficiency, but they will only supply the body with the hormones it is lacking, so usually get you on the level a "normal" person of your age would have.
Taking steroids en masse will open up a new world full of problems which you really don't wanna have, so I would strongly suggest to not follow this path, especially if you want to have children one day or don't want to have early heart attacks, etc. ;)
If the specialist can't detect a deficiency, you will probably have to live with the fact that your body is just not as strong as you want it to be. Every body is different in it's limits and that's definitely nothing to be ashamed of. |
16,723 | So I have six eight years of trial-and-error evidence to show that I am incapable of building strength to any measurable degree from any form of exercise. I do not show results and I have become tired of working out for no reason. I have put it all to an end and I am seeking alternative ways to build strength. One person told me he can genetically-alter my muscle cells and fibers to enable more strength without exercise - is this possible?
Another method I heard is heavily taking anabolic steroids, which supposedly can build strength even without exercise. At this point I am considering steroid-abuse if it means possible results I can appreciate.
I have never appreciated or have been satisfied with results from any workout program or routine over any period of time, and do not progress no matter what. I do not even wish to seek an expert as alternative approaches is what I am looking for.
Please let me know on any other possible ways that strength can be increased without exercise, since exercise does not work for me -- I have tried everything you can think of and after 8 years I am still where I started at 14.
A 22 year old man who is out lifted by small teenagers who barely workout ... I am a shame of a man and person overall. | 2014/06/05 | [
"https://fitness.stackexchange.com/questions/16723",
"https://fitness.stackexchange.com",
"https://fitness.stackexchange.com/users/8807/"
] | Genetically engineering your muscles? Not in the next decade or two.
Steroids without exercise? No. Steroids increase the protein available to cells, which effectively allows you to work your muscles harder so they grow more.
>
> A 22 year old man who is out lifted by small teenagers who barely workout ... I am a shame of a man and person overall.
>
>
>
Your worth is not measured by how much you can lift.
“Until you value yourself, you won't value your time. Until you value your time, you will not do anything with it. ”
― M. Scott Peck
I suspect your barrier to change is not physical, but in your head. No, I don't think you're crazy, but (speaking from personal experience here) many people believe things about themselves that are not true and cause them to limit themselves drastically. | I have had a problem with the confidence and energy(visible as enthusiasm) which allow me to exercise and feel good until recently and I believe it was diet and sleep related. Because it sounds as though confidence and enthusiasm are likely a large part of your problem, I suggest getting at least 30 grams of protein (even better, the US government's recommended 50 grams per day) and try to sleep eight hours.
Separately, it sounds like you might have a shame issue with working out so that you don't exhaust your muscles fully(to failure) in public. Perhaps you are embarrassed to be seen struggling with what you consider light weight? To remedy this issue, you can do exercises that no one can see you do.
Examples include pushups, tricep extensions, curls, and shrugs. Try these with 20lbs. or less and marvel at how your arms shape up. This can be a ten minute super-set every day before you shower in the privacy of your home. If you've tried for eight years, what's the harm in another month with a new tactic?
PS: A super set is one which alternates muscle-groups between sets, thereby letting lactic acid flush from one muscle group while working other muscle groups. |
16,723 | So I have six eight years of trial-and-error evidence to show that I am incapable of building strength to any measurable degree from any form of exercise. I do not show results and I have become tired of working out for no reason. I have put it all to an end and I am seeking alternative ways to build strength. One person told me he can genetically-alter my muscle cells and fibers to enable more strength without exercise - is this possible?
Another method I heard is heavily taking anabolic steroids, which supposedly can build strength even without exercise. At this point I am considering steroid-abuse if it means possible results I can appreciate.
I have never appreciated or have been satisfied with results from any workout program or routine over any period of time, and do not progress no matter what. I do not even wish to seek an expert as alternative approaches is what I am looking for.
Please let me know on any other possible ways that strength can be increased without exercise, since exercise does not work for me -- I have tried everything you can think of and after 8 years I am still where I started at 14.
A 22 year old man who is out lifted by small teenagers who barely workout ... I am a shame of a man and person overall. | 2014/06/05 | [
"https://fitness.stackexchange.com/questions/16723",
"https://fitness.stackexchange.com",
"https://fitness.stackexchange.com/users/8807/"
] | Stop Making Excuses
-------------------
>
> "I have six [to] eight years of trial-and-error evidence to show that I am incapable of building strength to any measurable degree from any form of exercise."
>
>
>
Either you have a serious medical issue or I call bullshit. I bet the reason you're not getting results is that you *"have [never] been satisfied with results from any workout program or routine over any period of time".* You try something halfheartedly for a little while, then stop, right? You just lift what you feel like and then go home? [That's not going to work.](http://www.t-nation.com/free_online_article/most_recent/the_biggest_training_fallacy_of_all&cr=)
If you think you have a serious medical issue then see a doctor about your health, particularly any possible hormone issues. Stop making up reasons not to see a medical professional. Address your problem head-on.
Lift, Eat, Repeat
-----------------
You must [lift and eat](https://fitness.stackexchange.com/a/6836/1771) if you want to be big and strong. You must work hard. You must be consistent. There is no other way. There are no excuses. There are no alternative methods. Buck up and be serious about your training.
Stop being concerned about other people's success and focus on your own progress. You know nothing about what they do. What they do has nothing to do with your own success or failure. Stop distracting yourself with fantasies about other people's supposedly quick and easy results and focus on working out hard and consistently.
Follow a Program
----------------
*Originally I asked the OP to detail their workouts. ("If you want help on how to make your workouts effective, describe what you've been doing in as much detail as you possibly can: programs, lifts, sets, reps, rest periods, weights, frequency per week, diet, sleep. If you can't be bothered to even write a short description of your lifting then I seriously doubt your commitment to your project.") They have since responded:*
>
> I do not really follow any programs; I just lift stuff. Plenty get strong this way, so what is wrong with me?
>
>
>
You have [fuckarounditis](http://www.leangains.com/2011/09/fuckarounditis.html). I would sympathize, but it's hard when you seem more interested in whinging about other people than actually doing something productive. There are genetic freaks who can sit on a couch for ten years and still lift 400 pounds. They aren't me, so why would I do what they do? I am me. I do what works for me. You are you. You can do what would work for you.
Some people can get away with not doing a program. Most people can't. Stop making excuses and pick a program. StrongLifts would be fine, as would Starting Strength, as would 5/3/1 or GreySkull Linear Progression. Pick one of those four--it really doesn't matter which--and follow it unerringly for six months. Keep a workout log. Eat and sleep right. If you do that and it doesn't work, then you will *know* why it didn't work, because you will see it in the log. Skipped workouts or failed lifts will be quite evident in the log.
If you are interested in results--and that's a big *if*--then you'll pick a program, follow it, focus on quality sleep, and eat plenty of good food. (You have not described your diet so we can't yet help on that front.) | Disregarding the fact that I agree with Dave Liepmann (either you are not training properly or you have a medical condition inhibiting your performance), I will give you a constructive answer. There is one thing you can do to increase strength without training. It is something that elite athletes use, and is one of the main factors that separates the best athletes from the mediocre ones.
Mental imagery.
Mental imagery is the use of imagination to visualize certain movements. Science has shown that visualization of a movement increases activity in those areas of the brain, potentiation through the corticospinal tract (motor neuron axons), and activity of the EMG. All these effects lead to gains in strength (<http://www.ncbi.nlm.nih.gov/pubmed/24133427>, <http://www.ncbi.nlm.nih.gov/pubmed/22127572> etc.).
The increase in strength comes about by two factors. Firstly, there is increased intra- and intermuscular coordination. That is, by visualizing a movement, your brain is getting used to the sequence of contractions between the muscles and inside them. Secondly, the areas of the brain controlling that movement get increased activity, and this leads to long term changes in activity (sort of like learning to ride a bike, and then remembering; someone who has squatted 300 pounds in their youth will be a stronger squatter than the average person even in old age). |
16,723 | So I have six eight years of trial-and-error evidence to show that I am incapable of building strength to any measurable degree from any form of exercise. I do not show results and I have become tired of working out for no reason. I have put it all to an end and I am seeking alternative ways to build strength. One person told me he can genetically-alter my muscle cells and fibers to enable more strength without exercise - is this possible?
Another method I heard is heavily taking anabolic steroids, which supposedly can build strength even without exercise. At this point I am considering steroid-abuse if it means possible results I can appreciate.
I have never appreciated or have been satisfied with results from any workout program or routine over any period of time, and do not progress no matter what. I do not even wish to seek an expert as alternative approaches is what I am looking for.
Please let me know on any other possible ways that strength can be increased without exercise, since exercise does not work for me -- I have tried everything you can think of and after 8 years I am still where I started at 14.
A 22 year old man who is out lifted by small teenagers who barely workout ... I am a shame of a man and person overall. | 2014/06/05 | [
"https://fitness.stackexchange.com/questions/16723",
"https://fitness.stackexchange.com",
"https://fitness.stackexchange.com/users/8807/"
] | Disregarding the fact that I agree with Dave Liepmann (either you are not training properly or you have a medical condition inhibiting your performance), I will give you a constructive answer. There is one thing you can do to increase strength without training. It is something that elite athletes use, and is one of the main factors that separates the best athletes from the mediocre ones.
Mental imagery.
Mental imagery is the use of imagination to visualize certain movements. Science has shown that visualization of a movement increases activity in those areas of the brain, potentiation through the corticospinal tract (motor neuron axons), and activity of the EMG. All these effects lead to gains in strength (<http://www.ncbi.nlm.nih.gov/pubmed/24133427>, <http://www.ncbi.nlm.nih.gov/pubmed/22127572> etc.).
The increase in strength comes about by two factors. Firstly, there is increased intra- and intermuscular coordination. That is, by visualizing a movement, your brain is getting used to the sequence of contractions between the muscles and inside them. Secondly, the areas of the brain controlling that movement get increased activity, and this leads to long term changes in activity (sort of like learning to ride a bike, and then remembering; someone who has squatted 300 pounds in their youth will be a stronger squatter than the average person even in old age). | If exercise really would not work then your muscles should have wasted away by now and you would not be able to get out of bed. Astronauts who stay on board the ISS for more than a few weeks have to work very hard to compensate for not having to carry their body weights all day long.
So, your muscles are able to repair themselves and maintain the strength needed to do your daily tasks. But it would be an enormous coincidence if this would be precisely the limit of your maximum muscle strength. Given your age (you are not 90 years old), that would be extremely unlikely anyway. So, you will get stronger if you do some exercise. |
16,723 | So I have six eight years of trial-and-error evidence to show that I am incapable of building strength to any measurable degree from any form of exercise. I do not show results and I have become tired of working out for no reason. I have put it all to an end and I am seeking alternative ways to build strength. One person told me he can genetically-alter my muscle cells and fibers to enable more strength without exercise - is this possible?
Another method I heard is heavily taking anabolic steroids, which supposedly can build strength even without exercise. At this point I am considering steroid-abuse if it means possible results I can appreciate.
I have never appreciated or have been satisfied with results from any workout program or routine over any period of time, and do not progress no matter what. I do not even wish to seek an expert as alternative approaches is what I am looking for.
Please let me know on any other possible ways that strength can be increased without exercise, since exercise does not work for me -- I have tried everything you can think of and after 8 years I am still where I started at 14.
A 22 year old man who is out lifted by small teenagers who barely workout ... I am a shame of a man and person overall. | 2014/06/05 | [
"https://fitness.stackexchange.com/questions/16723",
"https://fitness.stackexchange.com",
"https://fitness.stackexchange.com/users/8807/"
] | Stop Making Excuses
-------------------
>
> "I have six [to] eight years of trial-and-error evidence to show that I am incapable of building strength to any measurable degree from any form of exercise."
>
>
>
Either you have a serious medical issue or I call bullshit. I bet the reason you're not getting results is that you *"have [never] been satisfied with results from any workout program or routine over any period of time".* You try something halfheartedly for a little while, then stop, right? You just lift what you feel like and then go home? [That's not going to work.](http://www.t-nation.com/free_online_article/most_recent/the_biggest_training_fallacy_of_all&cr=)
If you think you have a serious medical issue then see a doctor about your health, particularly any possible hormone issues. Stop making up reasons not to see a medical professional. Address your problem head-on.
Lift, Eat, Repeat
-----------------
You must [lift and eat](https://fitness.stackexchange.com/a/6836/1771) if you want to be big and strong. You must work hard. You must be consistent. There is no other way. There are no excuses. There are no alternative methods. Buck up and be serious about your training.
Stop being concerned about other people's success and focus on your own progress. You know nothing about what they do. What they do has nothing to do with your own success or failure. Stop distracting yourself with fantasies about other people's supposedly quick and easy results and focus on working out hard and consistently.
Follow a Program
----------------
*Originally I asked the OP to detail their workouts. ("If you want help on how to make your workouts effective, describe what you've been doing in as much detail as you possibly can: programs, lifts, sets, reps, rest periods, weights, frequency per week, diet, sleep. If you can't be bothered to even write a short description of your lifting then I seriously doubt your commitment to your project.") They have since responded:*
>
> I do not really follow any programs; I just lift stuff. Plenty get strong this way, so what is wrong with me?
>
>
>
You have [fuckarounditis](http://www.leangains.com/2011/09/fuckarounditis.html). I would sympathize, but it's hard when you seem more interested in whinging about other people than actually doing something productive. There are genetic freaks who can sit on a couch for ten years and still lift 400 pounds. They aren't me, so why would I do what they do? I am me. I do what works for me. You are you. You can do what would work for you.
Some people can get away with not doing a program. Most people can't. Stop making excuses and pick a program. StrongLifts would be fine, as would Starting Strength, as would 5/3/1 or GreySkull Linear Progression. Pick one of those four--it really doesn't matter which--and follow it unerringly for six months. Keep a workout log. Eat and sleep right. If you do that and it doesn't work, then you will *know* why it didn't work, because you will see it in the log. Skipped workouts or failed lifts will be quite evident in the log.
If you are interested in results--and that's a big *if*--then you'll pick a program, follow it, focus on quality sleep, and eat plenty of good food. (You have not described your diet so we can't yet help on that front.) | If exercise really would not work then your muscles should have wasted away by now and you would not be able to get out of bed. Astronauts who stay on board the ISS for more than a few weeks have to work very hard to compensate for not having to carry their body weights all day long.
So, your muscles are able to repair themselves and maintain the strength needed to do your daily tasks. But it would be an enormous coincidence if this would be precisely the limit of your maximum muscle strength. Given your age (you are not 90 years old), that would be extremely unlikely anyway. So, you will get stronger if you do some exercise. |
16,723 | So I have six eight years of trial-and-error evidence to show that I am incapable of building strength to any measurable degree from any form of exercise. I do not show results and I have become tired of working out for no reason. I have put it all to an end and I am seeking alternative ways to build strength. One person told me he can genetically-alter my muscle cells and fibers to enable more strength without exercise - is this possible?
Another method I heard is heavily taking anabolic steroids, which supposedly can build strength even without exercise. At this point I am considering steroid-abuse if it means possible results I can appreciate.
I have never appreciated or have been satisfied with results from any workout program or routine over any period of time, and do not progress no matter what. I do not even wish to seek an expert as alternative approaches is what I am looking for.
Please let me know on any other possible ways that strength can be increased without exercise, since exercise does not work for me -- I have tried everything you can think of and after 8 years I am still where I started at 14.
A 22 year old man who is out lifted by small teenagers who barely workout ... I am a shame of a man and person overall. | 2014/06/05 | [
"https://fitness.stackexchange.com/questions/16723",
"https://fitness.stackexchange.com",
"https://fitness.stackexchange.com/users/8807/"
] | Disregarding the fact that I agree with Dave Liepmann (either you are not training properly or you have a medical condition inhibiting your performance), I will give you a constructive answer. There is one thing you can do to increase strength without training. It is something that elite athletes use, and is one of the main factors that separates the best athletes from the mediocre ones.
Mental imagery.
Mental imagery is the use of imagination to visualize certain movements. Science has shown that visualization of a movement increases activity in those areas of the brain, potentiation through the corticospinal tract (motor neuron axons), and activity of the EMG. All these effects lead to gains in strength (<http://www.ncbi.nlm.nih.gov/pubmed/24133427>, <http://www.ncbi.nlm.nih.gov/pubmed/22127572> etc.).
The increase in strength comes about by two factors. Firstly, there is increased intra- and intermuscular coordination. That is, by visualizing a movement, your brain is getting used to the sequence of contractions between the muscles and inside them. Secondly, the areas of the brain controlling that movement get increased activity, and this leads to long term changes in activity (sort of like learning to ride a bike, and then remembering; someone who has squatted 300 pounds in their youth will be a stronger squatter than the average person even in old age). | I have had a problem with the confidence and energy(visible as enthusiasm) which allow me to exercise and feel good until recently and I believe it was diet and sleep related. Because it sounds as though confidence and enthusiasm are likely a large part of your problem, I suggest getting at least 30 grams of protein (even better, the US government's recommended 50 grams per day) and try to sleep eight hours.
Separately, it sounds like you might have a shame issue with working out so that you don't exhaust your muscles fully(to failure) in public. Perhaps you are embarrassed to be seen struggling with what you consider light weight? To remedy this issue, you can do exercises that no one can see you do.
Examples include pushups, tricep extensions, curls, and shrugs. Try these with 20lbs. or less and marvel at how your arms shape up. This can be a ten minute super-set every day before you shower in the privacy of your home. If you've tried for eight years, what's the harm in another month with a new tactic?
PS: A super set is one which alternates muscle-groups between sets, thereby letting lactic acid flush from one muscle group while working other muscle groups. |
16,723 | So I have six eight years of trial-and-error evidence to show that I am incapable of building strength to any measurable degree from any form of exercise. I do not show results and I have become tired of working out for no reason. I have put it all to an end and I am seeking alternative ways to build strength. One person told me he can genetically-alter my muscle cells and fibers to enable more strength without exercise - is this possible?
Another method I heard is heavily taking anabolic steroids, which supposedly can build strength even without exercise. At this point I am considering steroid-abuse if it means possible results I can appreciate.
I have never appreciated or have been satisfied with results from any workout program or routine over any period of time, and do not progress no matter what. I do not even wish to seek an expert as alternative approaches is what I am looking for.
Please let me know on any other possible ways that strength can be increased without exercise, since exercise does not work for me -- I have tried everything you can think of and after 8 years I am still where I started at 14.
A 22 year old man who is out lifted by small teenagers who barely workout ... I am a shame of a man and person overall. | 2014/06/05 | [
"https://fitness.stackexchange.com/questions/16723",
"https://fitness.stackexchange.com",
"https://fitness.stackexchange.com/users/8807/"
] | Disregarding the fact that I agree with Dave Liepmann (either you are not training properly or you have a medical condition inhibiting your performance), I will give you a constructive answer. There is one thing you can do to increase strength without training. It is something that elite athletes use, and is one of the main factors that separates the best athletes from the mediocre ones.
Mental imagery.
Mental imagery is the use of imagination to visualize certain movements. Science has shown that visualization of a movement increases activity in those areas of the brain, potentiation through the corticospinal tract (motor neuron axons), and activity of the EMG. All these effects lead to gains in strength (<http://www.ncbi.nlm.nih.gov/pubmed/24133427>, <http://www.ncbi.nlm.nih.gov/pubmed/22127572> etc.).
The increase in strength comes about by two factors. Firstly, there is increased intra- and intermuscular coordination. That is, by visualizing a movement, your brain is getting used to the sequence of contractions between the muscles and inside them. Secondly, the areas of the brain controlling that movement get increased activity, and this leads to long term changes in activity (sort of like learning to ride a bike, and then remembering; someone who has squatted 300 pounds in their youth will be a stronger squatter than the average person even in old age). | >
> A 22 year old man who is out lifted by small teenagers who barely
> workout ... I am a shame of a man and person overall.
>
>
>
With that attitude, what you are experiencing is not that strange. When thoughts of that kind manifest in your mind, notice that they don't serve you, and are not even logical (why would your worthiness/value have anything to do with people you don't even know?). They are not even your ideas, but someone else's. Your environment (culture) has implanted detri-mental ideas into your unconscious. So why give them credence? The more you believe your negative thoughts, the more negative results you will experience. I suggest you get rid of your TV and learn to meditate. And then, if you still experience negative thoughts of self-doubt, perhaps have an entheogenic experience that might help you shed the baggage.
Addressing your perception of (what you have defined as) your problem should be your primary focus. Without addressing your negative thoughts (i.e. your state of being), you will continue to experience a negative reality, no matter what exercises you do.
With that said, thinking about exogenous steroids is a very bad idea in your case, I think. You want to read about endogenous growth factors instead (HGH, BDNF, etc). Consider supplements that decrease metabolic rate and increase growth factors. You'll have to spend the time to research this though; you ought to understand how they work. There is no single magical pill. Consider also meditation, as mentioned, and high-intensity exercises, like HIIT. There is no better way to make your body grow (via HGH) than HIIT (followed by a high-quality whey protein shake), and it requires very little of your time.
Consider also steering your diet toward a high-fat low-carb diet. It may seem contradictory but that's because of the failure to understand the metabolic role of fructose, and the falsehoods spread long ago by one Dr. Ancel Keys that began the baseless demonization of dietary fats (particularly saturated fats), which are actually your body's preferred source of fuel.
Personally, I only began to gain weight/muscle when slowing my metabolism and increasing growth factors using the methods above. I didn't include any links because if you really are determined you can simply google everything. |
17,028 | I have a Canon 550D which I've been using for around a year now. I really love it and have learned a great deal with this and the 18 - 135mm kit lens. But now with experience I feel the need to get some better glass. I won't be buying a new body any time soon because I figure investing in some good glass is more important.
As I have looked around, I see quite a few good used L lenses I can get in ebay for good bargain prices. But I know that the EF lenses don't have the same focal length in the cropped sensors. Is it a wise decision to buy these EF lenses or buy the cropped sensor alternatives?
I have the following lenses in mind that I am looking to buy down the line from the canon range over the next several months.
16-35mm f/2.8L, 24-70mm f/2.8L, 70-200 f/4L.
Are these apt choices for cropped sensors? I know most pros with FFs use these but I am a bit skeptic that they will serve the same purpose for me. If so what are the alternatives for this that have almost as good image quality? | 2011/11/08 | [
"https://photo.stackexchange.com/questions/17028",
"https://photo.stackexchange.com",
"https://photo.stackexchange.com/users/1924/"
] | The lineup of Canon crop (EF-S) lenses is not nearly as broad as the full-frame (EF) lenses.
* In the focal length of interest, some EF options give better image quality than the respective EF-S options.
* Additionally, some EF lenses offer features that are not available for EF-S lenses, such as weather sealing and stronger construction.
* (Not specific to the lenses you listed but) specialty lenses are only available in EF format, like fisheye and tilt-shift.
so yes, there are reasons to get full-frame lenses for a crop camera. For the specific lenses in question, @Joanne C's reasoning makes sense but today I personally think it is less important than it seemed to be in the past, as you have greater chances of upgrading your rebel to a higher crop body (7D class) than to a FF class. By the time you finally upgrade to FF class, you can sell your crop lenses for a good value. | Short form:
In general it is wise then, and only then, when you seriously consider moving to a full frame body later.
If you don't then it is just a case-by-case decistion, as yours obviously is. You are thinking of a number of specific lens for now.
Then, when the choice is just beween an EF lens and an EF-S consider the following:
* There is noting wrong with using an EF lens on a crop body. Nor is there anything wrong with a lens park made of both kinds.
* A crop body would use the best parts of the projected image only. Important when you take reviews into account. You can then ignore their less than optimal quality in the edges, that some of them may show.
* EF-S lenses of the same optical quality when used on crop bodies can be significantly cheaper than the EF lense that you compare it with. |
17,028 | I have a Canon 550D which I've been using for around a year now. I really love it and have learned a great deal with this and the 18 - 135mm kit lens. But now with experience I feel the need to get some better glass. I won't be buying a new body any time soon because I figure investing in some good glass is more important.
As I have looked around, I see quite a few good used L lenses I can get in ebay for good bargain prices. But I know that the EF lenses don't have the same focal length in the cropped sensors. Is it a wise decision to buy these EF lenses or buy the cropped sensor alternatives?
I have the following lenses in mind that I am looking to buy down the line from the canon range over the next several months.
16-35mm f/2.8L, 24-70mm f/2.8L, 70-200 f/4L.
Are these apt choices for cropped sensors? I know most pros with FFs use these but I am a bit skeptic that they will serve the same purpose for me. If so what are the alternatives for this that have almost as good image quality? | 2011/11/08 | [
"https://photo.stackexchange.com/questions/17028",
"https://photo.stackexchange.com",
"https://photo.stackexchange.com/users/1924/"
] | The lineup of Canon crop (EF-S) lenses is not nearly as broad as the full-frame (EF) lenses.
* In the focal length of interest, some EF options give better image quality than the respective EF-S options.
* Additionally, some EF lenses offer features that are not available for EF-S lenses, such as weather sealing and stronger construction.
* (Not specific to the lenses you listed but) specialty lenses are only available in EF format, like fisheye and tilt-shift.
so yes, there are reasons to get full-frame lenses for a crop camera. For the specific lenses in question, @Joanne C's reasoning makes sense but today I personally think it is less important than it seemed to be in the past, as you have greater chances of upgrading your rebel to a higher crop body (7D class) than to a FF class. By the time you finally upgrade to FF class, you can sell your crop lenses for a good value. | As usual: it depends
* In terms of image quality, it's definitely wise as only the best part of the lens will be used (the center) by your camera. Lenses are usually sharper near the center and you will notice less vignetting.
* the downside is, EF lenses are usually more expensive than equivalent EF-S lenses.
* on the other hand, the EF-S 10-22 is a great lens, but there simply is no equivalent EF lens made by Canon. The 16-35 is simply a different focal range and the difference is very noticeable.
* your EF-S lenses will be useless when you upgrade to full frame
* note that you should ignore the famous "crop factor" in this regard. The focal length and field of view is the same for EF and EF-S lenses *on the same camera*.
* however, when reading a lens review that was made *on a FF camera*, note that the overall experience of that lens on a crop camera may be different (for example, I love the 70-200 on full frame, but rarely use it on my 7D as it gets "quite long" on that camera).
Simply said: When comparing an EF and an EF-S lens *of the same focal length*, the EF version will most probably have better image quality and cost more, but produce the same framing. Besides that, you need to evaluate other factors - for your lens choice - *not related to the EF/EFS mount type*, like focal length range, aperture, IS, build quality, size, weight, price and so on... |
17,028 | I have a Canon 550D which I've been using for around a year now. I really love it and have learned a great deal with this and the 18 - 135mm kit lens. But now with experience I feel the need to get some better glass. I won't be buying a new body any time soon because I figure investing in some good glass is more important.
As I have looked around, I see quite a few good used L lenses I can get in ebay for good bargain prices. But I know that the EF lenses don't have the same focal length in the cropped sensors. Is it a wise decision to buy these EF lenses or buy the cropped sensor alternatives?
I have the following lenses in mind that I am looking to buy down the line from the canon range over the next several months.
16-35mm f/2.8L, 24-70mm f/2.8L, 70-200 f/4L.
Are these apt choices for cropped sensors? I know most pros with FFs use these but I am a bit skeptic that they will serve the same purpose for me. If so what are the alternatives for this that have almost as good image quality? | 2011/11/08 | [
"https://photo.stackexchange.com/questions/17028",
"https://photo.stackexchange.com",
"https://photo.stackexchange.com/users/1924/"
] | I bought a Canon 24-70mm f/2.8 L lens for my Canon 450D crop sensor body before I had purchased the full-frame Canon 5DMKII. By going this route, I had time to learn my lens on a crop body well before I could afford the full frame of the 5D. I even borrowed and used 70-200mm f/2.8 L lenses on the 450D body, which gave an additional crop factor for "perceived" zoom with little else to complain about.
Positives
* Owning a great lens at a lower price-point to buying a full-frame body
* Shooting great images without waiting around
Negatives
* Only knowing that I wasn't getting the "best" out of my lens in terms of the crop factor preventing me from achieving a "true" 24mm.
Note
* This topic does come up a lot, but the implication is that the intention exists to move to full frame. Plenty of photographers are happy with crop models, but these questions are usually handled in a "should I get the lens before the full frame body" sense. If so, go for it!
The difference between your kit lens and the 24-70 will astound you (with clarity). It will also delight you (when you realize how much sharper your shots are). And then it will depress you (when you remember how much these lens cost). | Short form:
In general it is wise then, and only then, when you seriously consider moving to a full frame body later.
If you don't then it is just a case-by-case decistion, as yours obviously is. You are thinking of a number of specific lens for now.
Then, when the choice is just beween an EF lens and an EF-S consider the following:
* There is noting wrong with using an EF lens on a crop body. Nor is there anything wrong with a lens park made of both kinds.
* A crop body would use the best parts of the projected image only. Important when you take reviews into account. You can then ignore their less than optimal quality in the edges, that some of them may show.
* EF-S lenses of the same optical quality when used on crop bodies can be significantly cheaper than the EF lense that you compare it with. |
17,028 | I have a Canon 550D which I've been using for around a year now. I really love it and have learned a great deal with this and the 18 - 135mm kit lens. But now with experience I feel the need to get some better glass. I won't be buying a new body any time soon because I figure investing in some good glass is more important.
As I have looked around, I see quite a few good used L lenses I can get in ebay for good bargain prices. But I know that the EF lenses don't have the same focal length in the cropped sensors. Is it a wise decision to buy these EF lenses or buy the cropped sensor alternatives?
I have the following lenses in mind that I am looking to buy down the line from the canon range over the next several months.
16-35mm f/2.8L, 24-70mm f/2.8L, 70-200 f/4L.
Are these apt choices for cropped sensors? I know most pros with FFs use these but I am a bit skeptic that they will serve the same purpose for me. If so what are the alternatives for this that have almost as good image quality? | 2011/11/08 | [
"https://photo.stackexchange.com/questions/17028",
"https://photo.stackexchange.com",
"https://photo.stackexchange.com/users/1924/"
] | If you have the money, go with the full frame option. The basic reasoning that I would have for that is simple: lenses will stay with you longer than the camera body. That's the nutshell answer.
Longer answer is that today you have a 550D and you're learning. Stay with that camera while you're doing that, until you feel that the photography you want to do is being impeded. Then you're going to look for something else. You might stay cropped sensor, you might not, but if you've shelled out thousands for lenses that are crop, then that may make the decision for you and that isn't ideal. Or you'll need to sell your lenses and you'll lose money in replacing. Also not ideal.
Net effect, if there is ever a real possibility that you'll buy a full frame Canon, new or used, then stick with the full-sized lenses. If this isn't a real possibility, then go crop. Just seriously consider all that first. | Short form:
In general it is wise then, and only then, when you seriously consider moving to a full frame body later.
If you don't then it is just a case-by-case decistion, as yours obviously is. You are thinking of a number of specific lens for now.
Then, when the choice is just beween an EF lens and an EF-S consider the following:
* There is noting wrong with using an EF lens on a crop body. Nor is there anything wrong with a lens park made of both kinds.
* A crop body would use the best parts of the projected image only. Important when you take reviews into account. You can then ignore their less than optimal quality in the edges, that some of them may show.
* EF-S lenses of the same optical quality when used on crop bodies can be significantly cheaper than the EF lense that you compare it with. |
17,028 | I have a Canon 550D which I've been using for around a year now. I really love it and have learned a great deal with this and the 18 - 135mm kit lens. But now with experience I feel the need to get some better glass. I won't be buying a new body any time soon because I figure investing in some good glass is more important.
As I have looked around, I see quite a few good used L lenses I can get in ebay for good bargain prices. But I know that the EF lenses don't have the same focal length in the cropped sensors. Is it a wise decision to buy these EF lenses or buy the cropped sensor alternatives?
I have the following lenses in mind that I am looking to buy down the line from the canon range over the next several months.
16-35mm f/2.8L, 24-70mm f/2.8L, 70-200 f/4L.
Are these apt choices for cropped sensors? I know most pros with FFs use these but I am a bit skeptic that they will serve the same purpose for me. If so what are the alternatives for this that have almost as good image quality? | 2011/11/08 | [
"https://photo.stackexchange.com/questions/17028",
"https://photo.stackexchange.com",
"https://photo.stackexchange.com/users/1924/"
] | I am going to keep it simple.
1. Many people do it. In fact, I have seen most people using APS-C camera with a mix of EF-S and EF lenses, and less people use **only** EF-S lenses.
2. Expensive lenses offers **excellent** image quality with the trade-off of being expensive, inflexible (usually a narrow zoom range, may cause more frequent lens changes) and heavy.
Do you want to spend more money, carry more weight, narrow your zoom range, **just to get better pixels**? This is entirely up to you, but **honestly** and generally, such lens is not a **must** by people not getting paid doing photography. | There are a few factors to consider here. Firstly the EF L range lenses are considerably better build quality than typical EF-S lenses and the optical quality tends to be much higher too. On a crop sensor the 70-200 f4 L is outstanding. You do however have to remember when choosing EF lenses to apply the crop factor to get the effective focal length. That said lenses tend to last a lifetime if you look after them so getting EF will not limit you to crop sensors in the future. I started off with a crop body but now use full frame as well so my early descision to only buy EF lenses has paid off.
The two major drawbacks of EF lenses are cost and weight. EF lenses have to project a larger image at the sensor so tend to contain bigger heavier elements. The 24-70 f2.8 L forinstance is quite heavy and has the tendency to feel unbalanced on lighter entry level bodies. They also tend to be quite a bit more expensive roughly 40-50% more than EF-S of the same focal range and maximum aperture.
If you look at lenses as an investment then cost is less of a factor and in my opinion the better image quality makes up for the extra weight. However this is a personal opinion and you may come to different conclusions after trying out some lenses. This is the most important thing to do, go to a shop and try some of these lenses for weight and quality then also factor this into your descision. |
17,028 | I have a Canon 550D which I've been using for around a year now. I really love it and have learned a great deal with this and the 18 - 135mm kit lens. But now with experience I feel the need to get some better glass. I won't be buying a new body any time soon because I figure investing in some good glass is more important.
As I have looked around, I see quite a few good used L lenses I can get in ebay for good bargain prices. But I know that the EF lenses don't have the same focal length in the cropped sensors. Is it a wise decision to buy these EF lenses or buy the cropped sensor alternatives?
I have the following lenses in mind that I am looking to buy down the line from the canon range over the next several months.
16-35mm f/2.8L, 24-70mm f/2.8L, 70-200 f/4L.
Are these apt choices for cropped sensors? I know most pros with FFs use these but I am a bit skeptic that they will serve the same purpose for me. If so what are the alternatives for this that have almost as good image quality? | 2011/11/08 | [
"https://photo.stackexchange.com/questions/17028",
"https://photo.stackexchange.com",
"https://photo.stackexchange.com/users/1924/"
] | The lineup of Canon crop (EF-S) lenses is not nearly as broad as the full-frame (EF) lenses.
* In the focal length of interest, some EF options give better image quality than the respective EF-S options.
* Additionally, some EF lenses offer features that are not available for EF-S lenses, such as weather sealing and stronger construction.
* (Not specific to the lenses you listed but) specialty lenses are only available in EF format, like fisheye and tilt-shift.
so yes, there are reasons to get full-frame lenses for a crop camera. For the specific lenses in question, @Joanne C's reasoning makes sense but today I personally think it is less important than it seemed to be in the past, as you have greater chances of upgrading your rebel to a higher crop body (7D class) than to a FF class. By the time you finally upgrade to FF class, you can sell your crop lenses for a good value. | I am going to keep it simple.
1. Many people do it. In fact, I have seen most people using APS-C camera with a mix of EF-S and EF lenses, and less people use **only** EF-S lenses.
2. Expensive lenses offers **excellent** image quality with the trade-off of being expensive, inflexible (usually a narrow zoom range, may cause more frequent lens changes) and heavy.
Do you want to spend more money, carry more weight, narrow your zoom range, **just to get better pixels**? This is entirely up to you, but **honestly** and generally, such lens is not a **must** by people not getting paid doing photography. |
17,028 | I have a Canon 550D which I've been using for around a year now. I really love it and have learned a great deal with this and the 18 - 135mm kit lens. But now with experience I feel the need to get some better glass. I won't be buying a new body any time soon because I figure investing in some good glass is more important.
As I have looked around, I see quite a few good used L lenses I can get in ebay for good bargain prices. But I know that the EF lenses don't have the same focal length in the cropped sensors. Is it a wise decision to buy these EF lenses or buy the cropped sensor alternatives?
I have the following lenses in mind that I am looking to buy down the line from the canon range over the next several months.
16-35mm f/2.8L, 24-70mm f/2.8L, 70-200 f/4L.
Are these apt choices for cropped sensors? I know most pros with FFs use these but I am a bit skeptic that they will serve the same purpose for me. If so what are the alternatives for this that have almost as good image quality? | 2011/11/08 | [
"https://photo.stackexchange.com/questions/17028",
"https://photo.stackexchange.com",
"https://photo.stackexchange.com/users/1924/"
] | There are a few factors to consider here. Firstly the EF L range lenses are considerably better build quality than typical EF-S lenses and the optical quality tends to be much higher too. On a crop sensor the 70-200 f4 L is outstanding. You do however have to remember when choosing EF lenses to apply the crop factor to get the effective focal length. That said lenses tend to last a lifetime if you look after them so getting EF will not limit you to crop sensors in the future. I started off with a crop body but now use full frame as well so my early descision to only buy EF lenses has paid off.
The two major drawbacks of EF lenses are cost and weight. EF lenses have to project a larger image at the sensor so tend to contain bigger heavier elements. The 24-70 f2.8 L forinstance is quite heavy and has the tendency to feel unbalanced on lighter entry level bodies. They also tend to be quite a bit more expensive roughly 40-50% more than EF-S of the same focal range and maximum aperture.
If you look at lenses as an investment then cost is less of a factor and in my opinion the better image quality makes up for the extra weight. However this is a personal opinion and you may come to different conclusions after trying out some lenses. This is the most important thing to do, go to a shop and try some of these lenses for weight and quality then also factor this into your descision. | Short form:
In general it is wise then, and only then, when you seriously consider moving to a full frame body later.
If you don't then it is just a case-by-case decistion, as yours obviously is. You are thinking of a number of specific lens for now.
Then, when the choice is just beween an EF lens and an EF-S consider the following:
* There is noting wrong with using an EF lens on a crop body. Nor is there anything wrong with a lens park made of both kinds.
* A crop body would use the best parts of the projected image only. Important when you take reviews into account. You can then ignore their less than optimal quality in the edges, that some of them may show.
* EF-S lenses of the same optical quality when used on crop bodies can be significantly cheaper than the EF lense that you compare it with. |
81,413 | I was wondering if tension on both ends of a rope is still the same, even if there is objects with different weights on both sides of the rope. | 2013/10/20 | [
"https://physics.stackexchange.com/questions/81413",
"https://physics.stackexchange.com",
"https://physics.stackexchange.com/users/29959/"
] | I'm assuming there is a pulley involved which allows the tension from both objects to be in the same direction (i.e towards the source of gravity).
Taking this to be the case, yes, the tension in the rope is constant. However, the entire system will accelerate, with the heavier mass moving downwards. | They can be different at certain circumstances. For example, in a pulley problem if we assume that the pulley and the rope is massless then the tension is same.[](https://i.stack.imgur.com/g3g5g.jpg)
But if we consider them to have considerable mass then we can see that T1 is not equal to T2.
Hope it was helpful..... |
13,357,583 | Which Platforms are supported for the IBM Social Business Toolkit SDK? Can I run the SDK on an IBM Domino/XWork server? | 2012/11/13 | [
"https://Stackoverflow.com/questions/13357583",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/1167759/"
] | The following platforms are supported:
* WebSphere Application Server 7
* WebSphere Portal 8
* Domino Server 8.5
* Tomcat 7
So yes, you can use the SDK on an IBM Domino/XWork Server. | The SDK should work with minimal amount of work on any J2EE server.
The WebSphere Application Server, Portal 8, Domino 8.5, Tomcat 7 are the tested versions. |
2,921,389 | I am creating a doc file and writing a text containing ^m in it and facing issue. Does this ^m is a special character for doc file ? If I replace ^m with some other characters (like ^m with >m or any other) then It works fine. I faced this issue with other characters too like ^a and few other. What could be the solution ? | 2010/05/27 | [
"https://Stackoverflow.com/questions/2921389",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/276279/"
] | ^M -- as in: Control-M -- is often used to type a 'carriage return' character (ASCII-code 13 in decimal, 0D in hex). | It could be that it is evaluated as an logical expression. Try to escape it either prepending ' before it, or \ . |
336,838 | I was just wondering, what's the difference between these file formats? Shouldn't there be just one or two that generally tend to perform superior to most others? | 2011/09/17 | [
"https://superuser.com/questions/336838",
"https://superuser.com",
"https://superuser.com/users/97637/"
] | If its linux based, .tar.gz or .tar.bz - otherwise known as your humble tarball. In windows, .zip - natively supported since windows XP. You also often encounter .rar (especially with files from slightly dubious sources) and .7z (windows/open source software most often).
If you want to be ABSOLUTELY sure your file will be opened by most modern OSes (and some not so modern ones), .zip is the safe choice.
Efficiency depends on the filetype in many cases - for example lrzip works best with VERY large files, text files always compress very well, but compressed audio dosen't, and compression ratio is often traded off for processor and ram usage- as such, there is no 'best' file format for compression | I prefer compressing my data using \*.rar with WinRAR as it is completely customizable. I use it because I can choose how much I want to compress it and I can set passwords to protect my archive. If I'm doing something involving disk images, I'll compress to \*.iso or \*.daa using PowerISO.
Whenever I'm not on one of my own computers, I compress it using Windows 7's built-in \*.zip compressor. On Ubuntu, I will probably compress in \*.tar.gz or \*.zip. |
21,376,200 | I am using open cv and C++. I have 2 face images which contain marker points on them. I have already found the coordinates of the marker points. Now I need to align those 2 face images based on those coordinates. The 2 images may not be necessarily of the same height, that is why I can't figure out how to start aligning them, what should be done etc. | 2014/01/27 | [
"https://Stackoverflow.com/questions/21376200",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/3217694/"
] | In your case, you cannot apply the homography based alignment procedure. Why not? Because it does not fit in this use case. It was designed to align flat surfaces. Faces (3D objects) with markers at different places and depths are clearly no planar surface.
Instead, you can:
1. try to match the markers between images then interpolate the displacement field of the other pixels. Classical ways of doing it will include [moving least squares](http://faculty.cs.tamu.edu/schaefer/research/mls.pdf) interpolation or [RBF](http://hal.archives-ouvertes.fr/docs/00/09/47/64/PDF/Bartoli_Zisserman_BMVC04.pdf)'s;
2. otherwise, a more "Face Processing" way of doing it would be to use the decomposition of faces images between a texture and a face model (like [AAM](http://en.wikipedia.org/wiki/Active_appearance_model) does) and work using the decomposition of your faces in this setup. | Define "align".
Or rather, notice that there does not exist a unique warp of the face-side image that matches the overlapping parts of the frontal one - meaning that there are infinite such warps.
So you need to better specify what your goal is, and what extra information you have, in addition to the images and a few matched points on them. For example, is your camera setup calibrated? I.e do you know the focal lengths of the cameras and their relative position and poses?
Are you trying to build a texture map (e.g. a projective one) so you can plaster a "merged" face image on top of a 3d model that you already have? Then you may want to look into cylindrical or spherical maps, and build a cylindrical or spherical projection of your images from their calibrated poses.
Or are you trying to reconstruct the whole 3d shape of the head based on those 2 views? Obviously you can do this only over the small strip where the two images overlap, and they quality of the images you posted seems a little too poor for that.
Or...? |
65,987 | A few days back, I went for a riverside shoot with my Nikon D5300. Unfortunately, moderate rain soon started. I noticed a few photographers, probably with professional grade cameras, were daring enough to shoot the landscape in such weather. The scenic beauty around at that moment was mesmerizing, but I missed capturing any shots, fearing that a single droplet of water would burn out my DSLR. Before trying out taking pictures in rainy condition with my Nikon D5300, I need to know how weather-proof it is. Any suggestions/authentic information is appreciated. | 2015/08/02 | [
"https://photo.stackexchange.com/questions/65987",
"https://photo.stackexchange.com",
"https://photo.stackexchange.com/users/39813/"
] | The D5300 is an entry-level DSLR and is not weatherproof at all. As most cameras, it will handle a few drops of water or snow but you should not let it get wet.
Weatherproof DSLRs and mirrorless exist and they will be able to stand up to strong rain without issues as long as a weatherproof lens is also attached. All camera manufacturers except Pentax/Ricoh reserve such features of higher-end models and pricier lenses, so if you want to get a weather-sealed DSLR and lens for a low cost, you will have to switch systems.
There are things called rain-covers which are basically ponchos for a camera which you can buy to use your D5300 in the rain. Its a little cumbersome to work with and you have to be careful because it is not a sealed bag, but can do for occasional rain. These cost $50-$100 the last time I checked. There different sizes are to accommodate different lenses. | Not sure if it is or not but I took my D5300 up Snowdon while it was raining and hailing, camera got drenched but it is still in good condition |
65,987 | A few days back, I went for a riverside shoot with my Nikon D5300. Unfortunately, moderate rain soon started. I noticed a few photographers, probably with professional grade cameras, were daring enough to shoot the landscape in such weather. The scenic beauty around at that moment was mesmerizing, but I missed capturing any shots, fearing that a single droplet of water would burn out my DSLR. Before trying out taking pictures in rainy condition with my Nikon D5300, I need to know how weather-proof it is. Any suggestions/authentic information is appreciated. | 2015/08/02 | [
"https://photo.stackexchange.com/questions/65987",
"https://photo.stackexchange.com",
"https://photo.stackexchange.com/users/39813/"
] | The D5300 is an entry-level DSLR and is not weatherproof at all. As most cameras, it will handle a few drops of water or snow but you should not let it get wet.
Weatherproof DSLRs and mirrorless exist and they will be able to stand up to strong rain without issues as long as a weatherproof lens is also attached. All camera manufacturers except Pentax/Ricoh reserve such features of higher-end models and pricier lenses, so if you want to get a weather-sealed DSLR and lens for a low cost, you will have to switch systems.
There are things called rain-covers which are basically ponchos for a camera which you can buy to use your D5300 in the rain. Its a little cumbersome to work with and you have to be careful because it is not a sealed bag, but can do for occasional rain. These cost $50-$100 the last time I checked. There different sizes are to accommodate different lenses. | [](https://i.stack.imgur.com/n87kB.jpg)
Above, you see frost on my camera. It is okay to use your camera in moderate rain and just dry off the camera well before the next use. |
65,987 | A few days back, I went for a riverside shoot with my Nikon D5300. Unfortunately, moderate rain soon started. I noticed a few photographers, probably with professional grade cameras, were daring enough to shoot the landscape in such weather. The scenic beauty around at that moment was mesmerizing, but I missed capturing any shots, fearing that a single droplet of water would burn out my DSLR. Before trying out taking pictures in rainy condition with my Nikon D5300, I need to know how weather-proof it is. Any suggestions/authentic information is appreciated. | 2015/08/02 | [
"https://photo.stackexchange.com/questions/65987",
"https://photo.stackexchange.com",
"https://photo.stackexchange.com/users/39813/"
] | The D5300 is an entry-level DSLR and is not weatherproof at all. As most cameras, it will handle a few drops of water or snow but you should not let it get wet.
Weatherproof DSLRs and mirrorless exist and they will be able to stand up to strong rain without issues as long as a weatherproof lens is also attached. All camera manufacturers except Pentax/Ricoh reserve such features of higher-end models and pricier lenses, so if you want to get a weather-sealed DSLR and lens for a low cost, you will have to switch systems.
There are things called rain-covers which are basically ponchos for a camera which you can buy to use your D5300 in the rain. Its a little cumbersome to work with and you have to be careful because it is not a sealed bag, but can do for occasional rain. These cost $50-$100 the last time I checked. There different sizes are to accommodate different lenses. | The most authentic information available for the D5300 is the official manual. Here is the link:
<http://download.nikonimglib.com/archive2/BTcII00t9KUv024jW9c13oRqeg68/D5300VRRM_(En)02.pdf>
Specifically, in the "Caring for the Camera" section, there are several important indicators as to how weatherproof your camera really is, for example:
>
> **Keep dry :** This product is not waterproof, and may malfunction if immersed in water or exposed to high levels of humidity. Rusting of
> the internal mechanism can cause irreparable damage.
>
>
> **Avoid sudden changes in temperature :** Sudden changes in temperature, such as those that occur when entering or leaving a
> heated building on a cold day,can cause condensation inside the
> device. To prevent condensation, place the device in a carrying case
> or plastic bag before exposing it to sudden changes in temperature.
>
>
> **Keep away from strong magnetic fields :** Do not use or store this device in the vicinity of equipment that generates strong
> electromagnetic radiation or magnetic fields. Strong static charges or
> the magnetic fields produced by equipment such as radio transmitters
> could interfere with the monitor, damage data stored on the memory
> card, or affect the product’s internal circuitry.
>
>
> **Do not leave the lens pointed at the sun :** Do not leave the lens pointed at the sun or other strong light source for an extended
> period. Intense light may cause the image sensor to deteriorate or
> produce a white blur effect in photographs.
>
>
>
Further information is provided as well, including caring for the battery, so I suggest you read through it to get a better understanding of the weather capability of your camera. |
65,987 | A few days back, I went for a riverside shoot with my Nikon D5300. Unfortunately, moderate rain soon started. I noticed a few photographers, probably with professional grade cameras, were daring enough to shoot the landscape in such weather. The scenic beauty around at that moment was mesmerizing, but I missed capturing any shots, fearing that a single droplet of water would burn out my DSLR. Before trying out taking pictures in rainy condition with my Nikon D5300, I need to know how weather-proof it is. Any suggestions/authentic information is appreciated. | 2015/08/02 | [
"https://photo.stackexchange.com/questions/65987",
"https://photo.stackexchange.com",
"https://photo.stackexchange.com/users/39813/"
] | Not sure if it is or not but I took my D5300 up Snowdon while it was raining and hailing, camera got drenched but it is still in good condition | [](https://i.stack.imgur.com/n87kB.jpg)
Above, you see frost on my camera. It is okay to use your camera in moderate rain and just dry off the camera well before the next use. |
65,987 | A few days back, I went for a riverside shoot with my Nikon D5300. Unfortunately, moderate rain soon started. I noticed a few photographers, probably with professional grade cameras, were daring enough to shoot the landscape in such weather. The scenic beauty around at that moment was mesmerizing, but I missed capturing any shots, fearing that a single droplet of water would burn out my DSLR. Before trying out taking pictures in rainy condition with my Nikon D5300, I need to know how weather-proof it is. Any suggestions/authentic information is appreciated. | 2015/08/02 | [
"https://photo.stackexchange.com/questions/65987",
"https://photo.stackexchange.com",
"https://photo.stackexchange.com/users/39813/"
] | The most authentic information available for the D5300 is the official manual. Here is the link:
<http://download.nikonimglib.com/archive2/BTcII00t9KUv024jW9c13oRqeg68/D5300VRRM_(En)02.pdf>
Specifically, in the "Caring for the Camera" section, there are several important indicators as to how weatherproof your camera really is, for example:
>
> **Keep dry :** This product is not waterproof, and may malfunction if immersed in water or exposed to high levels of humidity. Rusting of
> the internal mechanism can cause irreparable damage.
>
>
> **Avoid sudden changes in temperature :** Sudden changes in temperature, such as those that occur when entering or leaving a
> heated building on a cold day,can cause condensation inside the
> device. To prevent condensation, place the device in a carrying case
> or plastic bag before exposing it to sudden changes in temperature.
>
>
> **Keep away from strong magnetic fields :** Do not use or store this device in the vicinity of equipment that generates strong
> electromagnetic radiation or magnetic fields. Strong static charges or
> the magnetic fields produced by equipment such as radio transmitters
> could interfere with the monitor, damage data stored on the memory
> card, or affect the product’s internal circuitry.
>
>
> **Do not leave the lens pointed at the sun :** Do not leave the lens pointed at the sun or other strong light source for an extended
> period. Intense light may cause the image sensor to deteriorate or
> produce a white blur effect in photographs.
>
>
>
Further information is provided as well, including caring for the battery, so I suggest you read through it to get a better understanding of the weather capability of your camera. | [](https://i.stack.imgur.com/n87kB.jpg)
Above, you see frost on my camera. It is okay to use your camera in moderate rain and just dry off the camera well before the next use. |
396,799 | I am trying to set up a part of our network as a linux cluster. Since its a little educational for me, I choose using MAAS with JuJu. However there are some questions that boggle my mind and I was hoping that someone could clarify that for me.
The linux cluster I'm about to set up consists of 10 machines. Half of it Dell and the other HP. Both types of machines have a lights-out module (HP=>iLO2, Dell=>DRAC) that support IPMI on a seperate 100Mb NIC. They both support PXE on the first onboard gigabit NIC. I configured the lights out module with a static IP matching the physical layout of the racks and position height. Installing MAAS however didn't ask me on what subnet and vlan the IPMI protocol should be configured. How do I do this?
Also I want only the region controller to be able to contact the internet for package management. The other provisioned nodes should only be allowed to connect to the internet via a proxy on the region controller. So the region controller in my case should be configured with 3 subnets; 1 for internet, 1 for client protocol connectivity and 1 for cluster traffic. The region controller itself should also be a node for JuJu.
Then at last there is the node configuration that should have a sort of basic layout that can be used within JuJu. As far as I could see there is no possibility to set up cluster subnet configuration. Each machine has at least 4 NIC's that I like to assign the different subnets to; 1 for the IPMI traffic, 1 for the PXE boot traffic, 1 for the cluster traffic and 1 for the storage/client network. What I like to do is to bond all these interfaces together as one big trunk and then use VLAN's to separate the traffic **before** provisioning. Then when provisioning a node, MAAS should automagically configure the network interfaces as the layout suggests above.
Maybe what I'm looking for is a advanced configuration tutorial/guide for MAAS and JuJu.
Regards,
Joham | 2013/12/28 | [
"https://askubuntu.com/questions/396799",
"https://askubuntu.com",
"https://askubuntu.com/users/229480/"
] | Maybe if you let install of [Juju GUI](https://juju.ubuntu.com/docs/howto-gui-management.html) to provide adequately more what type of network balancing you need then you could find your answer faster.
[**Using Juju with GUI**](https://juju.ubuntu.com/docs/howto-gui-management.html)
This advanced guides very close to your problem:
[**MAAS: Cluster Configuration**](http://maas.ubuntu.com/docs/cluster-configuration.html)
[**Additional Manual Configuration**](http://maas.ubuntu.com/docs/configure.html#installing-additional-clusters) | Meanwhile I have a better understanding of how networking is arranged in maas and its pretty cool. So to answer my own question:
I recommend against separating IPMI and PXE traffic. Its more efficient to just share the RAC traffic on eth0. All server can boot PXE default on eth0 too.
Besides, you don't need an extra ethernet port/switch for just the RAC, and no extra cables, so that is less energy consumption, thus good! You can use shared nic for iDRAC 5+ & ILO2+, iDRAC 6 and higher have shared nic failover, but iLO2 doesn't.
The nic interface for PXE traffic is normally selectable in the server boot options. From there you assign the maas cluster controllers network interface. This interface is connected to the machines you like to control on that cluster network. Give them a dynamic range to boot into with DHCP and your a go. In the network tab of the maas webgui menu you will find your first network. You can select if you will, the first interface of each machine on that maas network and create a new maas network to route your other traffic to.
Thanks for the input!
Regards,
Joham |
1,651 | I flagged many, but not all, of the comments on [this question](https://law.stackexchange.com/q/86530/46948) and [associated answer](https://law.stackexchange.com/a/86532/46948) as not needed/conversational. The flags were declined.
They are mostly talking about the physical makeup of money, inflation and, whether one of their friends in the 1970s would have purchased a beer or cannabis resin with extra money. Some examples (although I don't want to get bogged down in this specific instance; I'm more interested in flagging practice generally):
>
> In the 1970s a friend washed, in a launderette, a pair of jeans with a one-pound note in a pocket. It was real money in those days for a young student. Worth around 12 US dollars in today's values. He sent it to the Bank of England and they mailed him a £1 postal order to cash at a post office.
>
>
>
>
> I don't know where you got that from, but around here, nobody but car dealers and jewelers regularly come in contact with 200 euro bills. Most transactions requiring bills that size are now made electronically. Lots of shops will not accept 500 and 200 bills.
>
>
>
>
> in fact knowing this guy he would have spent £1 of fun money on cannabis resin, and it would have got him around 2 or 3 grams, and you can't really buy that stuff these days. I don't know what £10 would buy now, as I don't use recreational drugs
>
>
>
Can a person who reviews such flags explain how the comments are helpful so that I can be more selective in my flagging (if you even mind that I have over-flagged in this instance)? Or, if it's alright that I might be raising flags that sometimes are declined, let me know that too (i.e. I [should just keep flagging as I see it and you'll just decline what you disagree with and that's all fine](https://law.meta.stackexchange.com/a/939/46948) - I found this other answer after writing this question). I just don't want to be cluttering your queues.
I appreciate any insight into how moderators approach these. To be clear, I am not critical of the approach taken by moderators to these particular flags; it just doesn't match my prior understanding, and am looking for understanding of how the moderators view things to help guide my own flagging behaviour. Hopefully this is also helpful to others. | 2022/11/23 | [
"https://law.meta.stackexchange.com/questions/1651",
"https://law.meta.stackexchange.com",
"https://law.meta.stackexchange.com/users/46948/"
] | I also flagged the comments after seeing this post.
My flag on this comment also got rejected:
>
> I once ran a pair of blue jeans through the cycles through which a
> washing machine puts them and then found that I had left three
> twenty-dollar bills in one of the pockets. That is my only experience
> of money laundering.
>
>
>
I have to say I am quite curious as to how this doesn't quality as being either "outdated, conversational or not relevant to this post.". To me, this is the very definition of conversational. | Handling of comments is increasingly arbitrary on LawSE, but users can help by being more reasonable and exercising some self-restraint when it comes to flagging. As [feetwet said very politely](https://law.meta.stackexchange.com/questions/1651/comments-that-are-conversational#comment3911_1651): Please err on the side of *not* flagging comments.
Although I agree that the comments you quote here are irrelevant, it is frivolous to call a mod's attention for something like this. That extent of "housekeeping by mods" is unnecessary, in part because SE has functionality that automates the creation of chatrooms in instances of intense activity in the comments. The fact that, by the time you flagged all those comments, no automated chatrooms had ensued there reflects that flaggers are being too intolerant and demanding.
By contrast, some moderator keeps removing comments that certainly contribute to improvement or clarification of posts. One recent example relates to one of your [currently deleted posts](https://law.meta.stackexchange.com/a/1638/18505), where you and I made some comments:
[](https://i.stack.imgur.com/LmqtI.jpg)
Transcription:
>
> Me: Interestingly you were the first one who VTC both posts, yet the
> points you develop in this answer have nothing to do with the
> purported reason for VTC (namely, the remark about "*Questions that
> clearly ask for specific legal advice*"). If your stated reason for
> VTC was a different one, this reflects a flaw in the functionality
> about closing posts. Nor does your criticism apply to either of the
> OP's posts. The OP did not intersperse "a bunch" of facts/assumptions
> with questions. Even if he did, that would not be a good reason for
> VTC. The OP's questions mostly paraphrase his central inquiry.
>
>
> You: As I said, I am merely providing points for improvement. If the
> question author tells me this is not welcome, I will delete this
> answer.
>
>
> Me: "*I am merely providing points for improvement.*" The OP's question
> literally is "*Why is this question off topic?*" He is trying to make
> sense of why some users are voting to close his posts. Suggesting the
> OP not to intersperse "a bunch of" facts/assumptions with questions is
> unwarranted and does not help him, in part because he did not do that
> in the first place. Asking him whether he meant "this or that" should
> have been done via comments on his posts (after all, comments also are
> for clarifications), not in lieu of an explanation of why you
> repeatedly voted to close them.
>
>
> You: That's okay. These are just my
> views. I'll trust Bruce to tell me if he finds them unhelpful.
>
>
>
These comments should have been preserved because they promote discernment [among the audience] as to whether an answer truly addresses the OP's actual concern. That instance was notorious because, as I pointed out, you repeatedly were the first one VTC the OP's posts and yet eluded explaining on LawMeta your reasons for doing so. Nevertheless, apparently some mod thought it is better to hinder discernment and suppress critical thinking (at least when articulated by certain users). |
1,651 | I flagged many, but not all, of the comments on [this question](https://law.stackexchange.com/q/86530/46948) and [associated answer](https://law.stackexchange.com/a/86532/46948) as not needed/conversational. The flags were declined.
They are mostly talking about the physical makeup of money, inflation and, whether one of their friends in the 1970s would have purchased a beer or cannabis resin with extra money. Some examples (although I don't want to get bogged down in this specific instance; I'm more interested in flagging practice generally):
>
> In the 1970s a friend washed, in a launderette, a pair of jeans with a one-pound note in a pocket. It was real money in those days for a young student. Worth around 12 US dollars in today's values. He sent it to the Bank of England and they mailed him a £1 postal order to cash at a post office.
>
>
>
>
> I don't know where you got that from, but around here, nobody but car dealers and jewelers regularly come in contact with 200 euro bills. Most transactions requiring bills that size are now made electronically. Lots of shops will not accept 500 and 200 bills.
>
>
>
>
> in fact knowing this guy he would have spent £1 of fun money on cannabis resin, and it would have got him around 2 or 3 grams, and you can't really buy that stuff these days. I don't know what £10 would buy now, as I don't use recreational drugs
>
>
>
Can a person who reviews such flags explain how the comments are helpful so that I can be more selective in my flagging (if you even mind that I have over-flagged in this instance)? Or, if it's alright that I might be raising flags that sometimes are declined, let me know that too (i.e. I [should just keep flagging as I see it and you'll just decline what you disagree with and that's all fine](https://law.meta.stackexchange.com/a/939/46948) - I found this other answer after writing this question). I just don't want to be cluttering your queues.
I appreciate any insight into how moderators approach these. To be clear, I am not critical of the approach taken by moderators to these particular flags; it just doesn't match my prior understanding, and am looking for understanding of how the moderators view things to help guide my own flagging behaviour. Hopefully this is also helpful to others. | 2022/11/23 | [
"https://law.meta.stackexchange.com/questions/1651",
"https://law.meta.stackexchange.com",
"https://law.meta.stackexchange.com/users/46948/"
] | We respond to flags
-------------------
If you flag it, we look at it and we have to make a decision to delete or let them slide. There has been criticism in the past of heavy handedness in deleting comments ([How to deal with comments?](https://law.meta.stackexchange.com/questions/900/how-to-deal-with-comments)). Now there is criticism for leaving them be. Just one more cross to bear.
My position now is to let them lie; particularly if the comment makes me smile. People who want to read the comments will read them; people who don’t will ignore them. Chatty/funny comments are fine; only if the comment thread gets so long that no sensible person is going to read it does it get moved to chat. We get an automatic notification at 20 comments in 7 days; that’ll do for me.
As Mao said “[let a hundred flowers bloom](https://en.wikipedia.org/wiki/Hundred_Flowers_Campaign); fortunately we don’t have his power to become a genocidal maniac if we don’t like the flowers. Comments are like fairy floss: ephemeral, insubstantial, bad for you, and not very satisfying. If something really needs to change, **edit the post** - that’s why you were given the privilege.
What we don’t want is argumentative, nasty, or that generate into pointless bickering. If they don’t do that
[](https://i.stack.imgur.com/XpWIR.gif) | Handling of comments is increasingly arbitrary on LawSE, but users can help by being more reasonable and exercising some self-restraint when it comes to flagging. As [feetwet said very politely](https://law.meta.stackexchange.com/questions/1651/comments-that-are-conversational#comment3911_1651): Please err on the side of *not* flagging comments.
Although I agree that the comments you quote here are irrelevant, it is frivolous to call a mod's attention for something like this. That extent of "housekeeping by mods" is unnecessary, in part because SE has functionality that automates the creation of chatrooms in instances of intense activity in the comments. The fact that, by the time you flagged all those comments, no automated chatrooms had ensued there reflects that flaggers are being too intolerant and demanding.
By contrast, some moderator keeps removing comments that certainly contribute to improvement or clarification of posts. One recent example relates to one of your [currently deleted posts](https://law.meta.stackexchange.com/a/1638/18505), where you and I made some comments:
[](https://i.stack.imgur.com/LmqtI.jpg)
Transcription:
>
> Me: Interestingly you were the first one who VTC both posts, yet the
> points you develop in this answer have nothing to do with the
> purported reason for VTC (namely, the remark about "*Questions that
> clearly ask for specific legal advice*"). If your stated reason for
> VTC was a different one, this reflects a flaw in the functionality
> about closing posts. Nor does your criticism apply to either of the
> OP's posts. The OP did not intersperse "a bunch" of facts/assumptions
> with questions. Even if he did, that would not be a good reason for
> VTC. The OP's questions mostly paraphrase his central inquiry.
>
>
> You: As I said, I am merely providing points for improvement. If the
> question author tells me this is not welcome, I will delete this
> answer.
>
>
> Me: "*I am merely providing points for improvement.*" The OP's question
> literally is "*Why is this question off topic?*" He is trying to make
> sense of why some users are voting to close his posts. Suggesting the
> OP not to intersperse "a bunch of" facts/assumptions with questions is
> unwarranted and does not help him, in part because he did not do that
> in the first place. Asking him whether he meant "this or that" should
> have been done via comments on his posts (after all, comments also are
> for clarifications), not in lieu of an explanation of why you
> repeatedly voted to close them.
>
>
> You: That's okay. These are just my
> views. I'll trust Bruce to tell me if he finds them unhelpful.
>
>
>
These comments should have been preserved because they promote discernment [among the audience] as to whether an answer truly addresses the OP's actual concern. That instance was notorious because, as I pointed out, you repeatedly were the first one VTC the OP's posts and yet eluded explaining on LawMeta your reasons for doing so. Nevertheless, apparently some mod thought it is better to hinder discernment and suppress critical thinking (at least when articulated by certain users). |
93,224 | >
> Use spaces liberally throughout your code. “When in doubt, space it out.”
>
>
>
In the above sentence, what does "space it out" mean?
Source: <https://make.wordpress.org/core/handbook/best-practices/coding-standards/javascript/#spacing> | 2016/06/09 | [
"https://ell.stackexchange.com/questions/93224",
"https://ell.stackexchange.com",
"https://ell.stackexchange.com/users/36262/"
] | In your example
>
> space it out
>
>
>
means to add spaces (or whitespaces) to make the code easier for humans to read.
Consider the difference between
>
> def myMethod(a,b,c)if(a==b)t=0;elseif(b==c)t=a;else t=c;end;return t;end
>
>
>
and
>
> def myMethod(a,b,c)
>
> if(a==b)
>
> t=0;
>
> elseif(b==c)
>
> t=a;
>
> else
>
> t=c;
>
> end;
>
> return t;
>
> end
>
>
>
the nesting, using additional whitespace indentation, more clearly shows how the code will execute given different conditions. In some circumstances, behind the scenes, the additional whitespace is automatically removed (since the computer does not need it) in a process call "minification".
Your example also uses the well known construction since "doubt" and "out" rhyme
>
> when in doubt, *something* it out
>
>
>
where *something* can be any verb that goes with "out" as long as the context makes sense
>
> when in doubt, white it out *(with correction fluid)*
>
> when in doubt, scream it out
>
> when in doubt, cut it out *(a possible saying by surgeons)*
>
> when in doubt, ride it out
>
> when in doubt, wait it out
>
>
> | The construction
>
> (verb) + **it out**
>
>
>
can be used to emphasize a verb in the sense to do that verb more, to do it until its maximum capacity, or to do it completely.
So your example means
>
> use more spaces
>
>
>
In other words, it means exactly what the first part says
>
> Use spaces liberally throughout your code
>
>
>
There are other examples:
* *Talk it out*
To talk until you are satisfied, or until you express all your burdensome emotions
* *Work it out*
To work on a problem until it is finished or fixed
* *Stretch it out*
To stretch something, like a muscle until it is warmed up, or a rubberband until it is about to break
* [*Stick it out*](http://idioms.thefreedictionary.com/stick+it+out)
To continue to do something to its end
There are other examples.
Further, the meaning I gave is not strict. Here is a special case.
>
> [cut it out](http://idioms.thefreedictionary.com/cut+it+out)
>
>
>
It means to stop something completely. For example, if you are trying to study, but your little brother or sister keeps asking you to play, you might tell him or her "Cut it out!" |
275,274 | There is a challenge involving a lemon floating in a jug of water which seems impossible to beat. I've noticed it in several pubs of Edinburgh.
The challenge is as follows:
* There is a jug half filled with water.
* Floating in the water, there's a lemon. The lemon doesn't touch either the bottom nor the edges of the jug.
* The challenge is to successfully balance a coin on the lemon.
* Modifying, moving, or more generally touching the lemon are not allowed.
Any attempt to balance a coin on the lemon seems to result in the lemon flipping over, and the coin to sink in the water.
Why is it so hard to balance the coin while it's extremely easy to balance a coin on a lemon set on a table? How do you beat the lemon challenge? | 2016/08/19 | [
"https://physics.stackexchange.com/questions/275274",
"https://physics.stackexchange.com",
"https://physics.stackexchange.com/users/67968/"
] | We assume the lemon is rigid, which is reasonably accurate for these small forces.
Stability in buoyancy requires a small rotation to create a net restoring torque. This is conceptualized as the [metacenter](https://en.wikipedia.org/wiki/Metacentric_height), which is the "average" point the water pushes upward on. For *small* displacement angles this point remains fixed to the object. If the center of gravity is above the metacenter it's unstable. For the lemon, the metacenter is very close to the center since it's almost cylindrically symmetric. A coin raises the center of mass above the metacenter and makes the system unstable, regardless of exactly where it's positioned.
For a lemon on the table, the bumps and/or flat-regions act like a tiny tripod. As long as the center of mass stays above this "tripod" (above a point inside the triangle defined by it's three feet), it is stable. The center of mass depends on the position of the coin, so we can find a location that is stable for an arbitrarily small tripod.
As to the water case, it may be possible if the lemon is oddly shaped enough. | [](https://i.stack.imgur.com/IKbME.jpg)
The real answer is a trick. Sorry
Take a **heavier** coin and squeeze it in sideways underneath, so it's now a lemon with the centre of gravity at the bottom, like the keel on a sailboat.
As long as the top coin is small and light, it should balance. |
275,274 | There is a challenge involving a lemon floating in a jug of water which seems impossible to beat. I've noticed it in several pubs of Edinburgh.
The challenge is as follows:
* There is a jug half filled with water.
* Floating in the water, there's a lemon. The lemon doesn't touch either the bottom nor the edges of the jug.
* The challenge is to successfully balance a coin on the lemon.
* Modifying, moving, or more generally touching the lemon are not allowed.
Any attempt to balance a coin on the lemon seems to result in the lemon flipping over, and the coin to sink in the water.
Why is it so hard to balance the coin while it's extremely easy to balance a coin on a lemon set on a table? How do you beat the lemon challenge? | 2016/08/19 | [
"https://physics.stackexchange.com/questions/275274",
"https://physics.stackexchange.com",
"https://physics.stackexchange.com/users/67968/"
] | [](https://i.stack.imgur.com/IKbME.jpg)
The real answer is a trick. Sorry
Take a **heavier** coin and squeeze it in sideways underneath, so it's now a lemon with the centre of gravity at the bottom, like the keel on a sailboat.
As long as the top coin is small and light, it should balance. | I don't happen to have a lemon at the moment. But here's what I would try. I would try to place the coin so that it's position is as close as possible to the water plane. So then near either tip of the lemon rather than the center. My guess is the lemon is somewhat more stable in pitch than in roll, so it may not pitch up. And if the coin is closer to the water plane the disturbing torque in the roll axis may not be enough to turn the lemon. |
275,274 | There is a challenge involving a lemon floating in a jug of water which seems impossible to beat. I've noticed it in several pubs of Edinburgh.
The challenge is as follows:
* There is a jug half filled with water.
* Floating in the water, there's a lemon. The lemon doesn't touch either the bottom nor the edges of the jug.
* The challenge is to successfully balance a coin on the lemon.
* Modifying, moving, or more generally touching the lemon are not allowed.
Any attempt to balance a coin on the lemon seems to result in the lemon flipping over, and the coin to sink in the water.
Why is it so hard to balance the coin while it's extremely easy to balance a coin on a lemon set on a table? How do you beat the lemon challenge? | 2016/08/19 | [
"https://physics.stackexchange.com/questions/275274",
"https://physics.stackexchange.com",
"https://physics.stackexchange.com/users/67968/"
] | We assume the lemon is rigid, which is reasonably accurate for these small forces.
Stability in buoyancy requires a small rotation to create a net restoring torque. This is conceptualized as the [metacenter](https://en.wikipedia.org/wiki/Metacentric_height), which is the "average" point the water pushes upward on. For *small* displacement angles this point remains fixed to the object. If the center of gravity is above the metacenter it's unstable. For the lemon, the metacenter is very close to the center since it's almost cylindrically symmetric. A coin raises the center of mass above the metacenter and makes the system unstable, regardless of exactly where it's positioned.
For a lemon on the table, the bumps and/or flat-regions act like a tiny tripod. As long as the center of mass stays above this "tripod" (above a point inside the triangle defined by it's three feet), it is stable. The center of mass depends on the position of the coin, so we can find a location that is stable for an arbitrarily small tripod.
As to the water case, it may be possible if the lemon is oddly shaped enough. | I don't happen to have a lemon at the moment. But here's what I would try. I would try to place the coin so that it's position is as close as possible to the water plane. So then near either tip of the lemon rather than the center. My guess is the lemon is somewhat more stable in pitch than in roll, so it may not pitch up. And if the coin is closer to the water plane the disturbing torque in the roll axis may not be enough to turn the lemon. |
292,887 | Recently I downloaded ubuntu 13.04 (iso). Now after extracting the iso file and running wubi - it says downloading required files though I had already downloaded the iso file (794 MB). So what to do now? | 2013/05/09 | [
"https://askubuntu.com/questions/292887",
"https://askubuntu.com",
"https://askubuntu.com/users/101535/"
] | wubi in 13.04 is not in a releasable state. You have to install Ubuntu 12.10 through wubi and then upgrade to 13.04. follow this [steps](http://schoudhury.com/blog/articles/install-ubuntu-13-04-with-ubuntu-wubi-installer/) | Use the ISO that you have downloaded. You can make a boot-able pendrive by using this utility at <http://www.pendrivelinux.com/>. Then you can install ubuntu using this pendrive.
PS. : in your boot options just check that USB is higher priority to the hard-drive.
Also, Wubi currently is not the best way of installing Ubuntu. You can read it for yourself [here](http://www.omgubuntu.co.uk/2013/04/wubi-advice) |
292,887 | Recently I downloaded ubuntu 13.04 (iso). Now after extracting the iso file and running wubi - it says downloading required files though I had already downloaded the iso file (794 MB). So what to do now? | 2013/05/09 | [
"https://askubuntu.com/questions/292887",
"https://askubuntu.com",
"https://askubuntu.com/users/101535/"
] | wubi in 13.04 is not in a releasable state. You have to install Ubuntu 12.10 through wubi and then upgrade to 13.04. follow this [steps](http://schoudhury.com/blog/articles/install-ubuntu-13-04-with-ubuntu-wubi-installer/) | If you're on Windows, or even on Wine you could also try Unetbootin or LinuxLiveUsb.
I tried both of those for the first time yesterday, both were remarkably easy to use and did the job perfectly. |
292,887 | Recently I downloaded ubuntu 13.04 (iso). Now after extracting the iso file and running wubi - it says downloading required files though I had already downloaded the iso file (794 MB). So what to do now? | 2013/05/09 | [
"https://askubuntu.com/questions/292887",
"https://askubuntu.com",
"https://askubuntu.com/users/101535/"
] | wubi in 13.04 is not in a releasable state. You have to install Ubuntu 12.10 through wubi and then upgrade to 13.04. follow this [steps](http://schoudhury.com/blog/articles/install-ubuntu-13-04-with-ubuntu-wubi-installer/) | DO NOT extract ISO files. Instead mount it using ISO mounting program, and run Wubi. I suggest use Wubi only when you using Ubuntu [12.10](/questions/tagged/12.10 "show questions tagged '12.10'")
---
If you mean installing it on its own partition, instead use [live-usb](/questions/tagged/live-usb "show questions tagged 'live-usb'") from [pendrive](/questions/tagged/pendrive "show questions tagged 'pendrive'") using [UUI (Universal USB Installer)](http://www.pendrivelinux.com/). |
292,887 | Recently I downloaded ubuntu 13.04 (iso). Now after extracting the iso file and running wubi - it says downloading required files though I had already downloaded the iso file (794 MB). So what to do now? | 2013/05/09 | [
"https://askubuntu.com/questions/292887",
"https://askubuntu.com",
"https://askubuntu.com/users/101535/"
] | Use the ISO that you have downloaded. You can make a boot-able pendrive by using this utility at <http://www.pendrivelinux.com/>. Then you can install ubuntu using this pendrive.
PS. : in your boot options just check that USB is higher priority to the hard-drive.
Also, Wubi currently is not the best way of installing Ubuntu. You can read it for yourself [here](http://www.omgubuntu.co.uk/2013/04/wubi-advice) | If you're on Windows, or even on Wine you could also try Unetbootin or LinuxLiveUsb.
I tried both of those for the first time yesterday, both were remarkably easy to use and did the job perfectly. |
292,887 | Recently I downloaded ubuntu 13.04 (iso). Now after extracting the iso file and running wubi - it says downloading required files though I had already downloaded the iso file (794 MB). So what to do now? | 2013/05/09 | [
"https://askubuntu.com/questions/292887",
"https://askubuntu.com",
"https://askubuntu.com/users/101535/"
] | Use the ISO that you have downloaded. You can make a boot-able pendrive by using this utility at <http://www.pendrivelinux.com/>. Then you can install ubuntu using this pendrive.
PS. : in your boot options just check that USB is higher priority to the hard-drive.
Also, Wubi currently is not the best way of installing Ubuntu. You can read it for yourself [here](http://www.omgubuntu.co.uk/2013/04/wubi-advice) | DO NOT extract ISO files. Instead mount it using ISO mounting program, and run Wubi. I suggest use Wubi only when you using Ubuntu [12.10](/questions/tagged/12.10 "show questions tagged '12.10'")
---
If you mean installing it on its own partition, instead use [live-usb](/questions/tagged/live-usb "show questions tagged 'live-usb'") from [pendrive](/questions/tagged/pendrive "show questions tagged 'pendrive'") using [UUI (Universal USB Installer)](http://www.pendrivelinux.com/). |
12,220,650 | I have a very odd problem related to the Portland Group FORTRAN 90 compiler. I am trying to run a code that *relies* on array overflow to work properly. *I did not write this code!* The originators had to compile it with the flag "-tp=piii" to force the compiler to refrain from optimizations that defeated the array overflow. I guess the idea is that compilers written for the old P3 were too primitive to do this sort of thing. Now, when I try to do the same thing, I get the message "pgf90-Fatal --tp piii is not supported in this installation." So I can't do the same thing.
So: Does pgf90 in its default operation defeat the sort of array overflow the code needs? The people I am working with obviously think it does. And, if it does, could there be some other flag(s) I could use to get what I need from the "-tp=piii" flag?
Bet you never thought you would get a question like this! Just think how *I* feel. And yes, I will be re-writing it as soon as I can convince my keepers to let me do it. | 2012/08/31 | [
"https://Stackoverflow.com/questions/12220650",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/1380285/"
] | I'm no longer familiar with the PGI compiler and don't have its documentation to hand so can't guide you directly to the compiler option you want, but it will be indexed under something like *array bounds* or *bounds checking*.
Until Fortran 90 it was common practice to write code which ignored, or was ignorant of, array bounds. Much of the code that was written that way is still out in the wild and I (like most Fortran programmers) come across it regularly. Sadly (that's argumentative) so is the attitude that it is an acceptable way to write code; if I meet the attitude out in the wild I terminate it with extreme prejudice.
Rant over ... it is the default behaviour of at least some of the Fortran compilers currently in widespread use to not automatically generate code which, at run-time, has a tantrum when the program steps outside an array's boundaries. However, all of them will have an option to generate code which does include bounds checking at run-time.
Not checking array bounds at run time generally means faster code and most Fortran users are very interested in faster code which goes some way to explaining the default behaviour of compilers.
So, to conclude, you shouldn't have too much trouble reproducing the required behaviour of the code you've inherited. I'll be a little surprised if the PGI compiler doesn't default to not checking array bounds; but it will definitely have an option for switching the feature on or off. | Just in case anyone ever runs into the same problem with the "piii" flag, recent PGI compilers do support this flag .... if you have the 32-bit libraries installed. And, as it turns out, I do not. |
4,043 | Has anyone created a twitter like app in Sharepoint 2007? Would really like to know about your ideas and suggestions. | 2010/07/15 | [
"https://sharepoint.stackexchange.com/questions/4043",
"https://sharepoint.stackexchange.com",
"https://sharepoint.stackexchange.com/users/-1/"
] | There are a few options for you.
Michael Gannotti has this point on how to do it simply with a content editor web part and some javascript:
<http://sharepoint.microsoft.com/blogs/mikeg/Lists/Posts/Post.aspx?ID=1202>
Aidan Garnish has a solution here:
<http://aidangarnish.net/blog/post/2009/02/Twitter-SharePoint-web-part.aspx>
There's a CodePlex project called SharePointTwitter here:
<http://sharepointtwitter.codeplex.com/>
And if you just want to search twitter there's a web part here:
<http://www.mattjimison.com/blog/2009/03/04/twitter-search-webpart/>
Hope that helps! | Check out this [Team Status](http://community.zevenseas.com/Blogs/Daniel/archive/2009/05/09/release-version-of-our-%e2%80%9cassembly-free%e2%80%9d-team-status-template.aspx) solution from Zevenseas. |
4,043 | Has anyone created a twitter like app in Sharepoint 2007? Would really like to know about your ideas and suggestions. | 2010/07/15 | [
"https://sharepoint.stackexchange.com/questions/4043",
"https://sharepoint.stackexchange.com",
"https://sharepoint.stackexchange.com/users/-1/"
] | There are a few options for you.
Michael Gannotti has this point on how to do it simply with a content editor web part and some javascript:
<http://sharepoint.microsoft.com/blogs/mikeg/Lists/Posts/Post.aspx?ID=1202>
Aidan Garnish has a solution here:
<http://aidangarnish.net/blog/post/2009/02/Twitter-SharePoint-web-part.aspx>
There's a CodePlex project called SharePointTwitter here:
<http://sharepointtwitter.codeplex.com/>
And if you just want to search twitter there's a web part here:
<http://www.mattjimison.com/blog/2009/03/04/twitter-search-webpart/>
Hope that helps! | Have a look at [Yammer for SharePoint](http://blog.yammer.com/blog/2010/06/yammer-introduces-microsoft-sharepoint-2007-integration.html). |
4,043 | Has anyone created a twitter like app in Sharepoint 2007? Would really like to know about your ideas and suggestions. | 2010/07/15 | [
"https://sharepoint.stackexchange.com/questions/4043",
"https://sharepoint.stackexchange.com",
"https://sharepoint.stackexchange.com/users/-1/"
] | There are a few options for you.
Michael Gannotti has this point on how to do it simply with a content editor web part and some javascript:
<http://sharepoint.microsoft.com/blogs/mikeg/Lists/Posts/Post.aspx?ID=1202>
Aidan Garnish has a solution here:
<http://aidangarnish.net/blog/post/2009/02/Twitter-SharePoint-web-part.aspx>
There's a CodePlex project called SharePointTwitter here:
<http://sharepointtwitter.codeplex.com/>
And if you just want to search twitter there's a web part here:
<http://www.mattjimison.com/blog/2009/03/04/twitter-search-webpart/>
Hope that helps! | Check this
<http://tweetpart.codeplex.com/> |
30,373 | 
Plant :Alstonia
Appearance:Blisters (gall) on both sides,cutting galls leaves white fluid.
After some time holes apppears in the blisters.so it seems some insect laid eggs.
What kind of disease is this? It seems to be some kind of blisters on the leaves of a decorative plant.
I'm guessing some insect laid eggs in it for eggs nourishment.
Would you please identify them and tell me how to treat them? | 2017/01/03 | [
"https://gardening.stackexchange.com/questions/30373",
"https://gardening.stackexchange.com",
"https://gardening.stackexchange.com/users/16473/"
] | Alstonia scholaris (L.) R. Br. is a very beautiful ornamental tree, which is commonly known as pagoda tree because of its pagoda like growing habit. It is commonly infected by the Homopteran, Pauropsylla tuberculata Crawf which leads to unsightly gall formation on the leaves as pictured.
The gall is the leaf response to the infection by the parasite which in turn sustains the growing insect. If there is a hole in the gall, the insect has likely already left.
<https://www.cabdirect.org/cabdirect/abstract/20083091676> | I agree, leaf galls. Looks like a Rhododendron regardless, @Atul, need you to take a razor blade and slice through a 'gall' to see if the insect is still there. Take a picture. I would right now cut that infected branch off. This is usually not a death sentence! But before 'trying' any treatment we need to know what that insect is...or virus or bacteria but I am guessing insect. Later, Atul, lets talk about soil improvement. Plants that are stressed by poor environmental conditions are far more susceptible to insect or disease damage. Gaggy soil.
[leaf galls](https://www.google.com/imgres?imgurl=http%3A%2F%2Fcached.imagescaler.hbpl.co.uk%2Fresize%2FscaleWidth%2F620%2Fofflinehbpl.hbpl.co.uk%2Fnews%2FWOH%2F23_GallMiteDamageJuglansDoveAss_rt-2014052812345637.gif&imgrefurl=http%3A%2F%2Falfa-img.com%2Fshow%2Fpetunia-pests-and-diseases.html&docid=P8KDOQSHa9_SoM&tbnid=ylcP9Q2NYaeoiM%3A&vet=1&w=500&h=333&bih=735&biw=1455&q=rhododendron%20leaf%20gall&ved=0ahUKEwjIgtPtsKfRAhUC62MKHbs7ATAQMwgaKAAwAA&iact=mrc&uact=8) - [leaf gall](https://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0ahUKEwi_0JX8s6fRAhVH5mMKHcv4BocQjRwIBw&url=https%3A%2F%2Fentomologytoday.org%2F2015%2F06%2F11%2Fgalls-insects-behind-the-weird-growths-on-plants%2F&bvm=bv.142059868,d.cGc&psig=AFQjCNEx9BzQ8XVmHHJJEzogJlDcSmEJig&ust=1483582004236157) |
203,266 | I need another excuse of "I was very busy" as people became tired of hearing it. So, I thought of expressing the idea of having a very restricted/limited time for all the tasks that I have been assigned to do and therefore I couldn't completely finish this specific one. The thing is I can't get my hands on a suitable phrase.
I guess it would be something like:
>
> I wasn't able to finish it as I **got pretty restricted** in time.
>
>
>
Is it correct? Can I achieve that meaning better?
It is not necessary to be formal, but I don't want it to be too informal. | 2019/03/31 | [
"https://ell.stackexchange.com/questions/203266",
"https://ell.stackexchange.com",
"https://ell.stackexchange.com/users/80554/"
] | There are some other good suggestions here. I might also use:
>
> I got caught up with other work.
>
>
> I got caught up in other work.
>
>
>
Either of these means that you were very busy or “tangled up” with other work- like you couldn’t escape the trap of the work, so to speak.
EDIT: Sorry, I should have also addressed your own suggestion -
>
> I got pretty restricted in time.
>
>
>
I would not say that, even if the meaning might be understood. The phrasing is awkward - it would sound better to say
>
> My time was restricted.
>
>
>
if you were to use the word *restricted*. *Restricted* is something that *is*, not something that is *gotten*, generally speaking.
Also, *restricted* is often used to indicate some specific enforced limit, like "Access was restricted to authorized users", or "My time was restricted to three hours". I think in this case the word doesn't completely fit if nobody was actually forcing you to only spend a certain amount of time on this particular task. I daresay it might come off as rude to tell someone the time you had for this task was *restricted*; they might think you set a limit on the time you were going to spend on it because you didn't think it was that important. | **Get around to**
*phrasal verb of get*
**deal with (a task) in due course.**
**to do something that you have intended to do for a long time**
>
> I didn't **get around to** putting all the photos in frames.
>
>
> I couldn't **get around to** finishing it on time.
>
>
> I intended to tidy the flat at the weekend, but I didn't **get round to** it.
>
>
> It's been at the back of my mind to call José for several days now, but I haven't **got round to** it yet.
>
>
> He never did **get around to** putting up the shelves.
>
>
> After weeks of putting it off, she finally **got around to** painting the bedroom.
>
>
> Did you **get round to** doing the shopping?
>
>
>
---
**to be tied up**
**to be very busy and unable to speak to anyone, go anywhere, etc:**
**Fig. busy.**
>
> How long will you be **tied up**? I will be **tied up** in a meeting for an
> hour.
>
>
> I was **tied up** and couldn’t get to the phone.
>
>
> He's **tied up** with his new book. He's working hard, you know.
>
>
>
---
**To have too much on plate**
**to be too busy.**
>
> I'm sorry, I just **have too much on my plate** right now. If you have
> **too much on your plate**, can I help?
>
>
>
---
**You could've said:**
>
> I wasn't able to finish it, because I **had too much on my plate.**
>
>
>
or
>
> I wasn't able to finish, because I was a little **tied up**.
>
>
>
or
>
> I couldn't **get around** to it.
>
>
> |
203,266 | I need another excuse of "I was very busy" as people became tired of hearing it. So, I thought of expressing the idea of having a very restricted/limited time for all the tasks that I have been assigned to do and therefore I couldn't completely finish this specific one. The thing is I can't get my hands on a suitable phrase.
I guess it would be something like:
>
> I wasn't able to finish it as I **got pretty restricted** in time.
>
>
>
Is it correct? Can I achieve that meaning better?
It is not necessary to be formal, but I don't want it to be too informal. | 2019/03/31 | [
"https://ell.stackexchange.com/questions/203266",
"https://ell.stackexchange.com",
"https://ell.stackexchange.com/users/80554/"
] | There are some other good suggestions here. I might also use:
>
> I got caught up with other work.
>
>
> I got caught up in other work.
>
>
>
Either of these means that you were very busy or “tangled up” with other work- like you couldn’t escape the trap of the work, so to speak.
EDIT: Sorry, I should have also addressed your own suggestion -
>
> I got pretty restricted in time.
>
>
>
I would not say that, even if the meaning might be understood. The phrasing is awkward - it would sound better to say
>
> My time was restricted.
>
>
>
if you were to use the word *restricted*. *Restricted* is something that *is*, not something that is *gotten*, generally speaking.
Also, *restricted* is often used to indicate some specific enforced limit, like "Access was restricted to authorized users", or "My time was restricted to three hours". I think in this case the word doesn't completely fit if nobody was actually forcing you to only spend a certain amount of time on this particular task. I daresay it might come off as rude to tell someone the time you had for this task was *restricted*; they might think you set a limit on the time you were going to spend on it because you didn't think it was that important. | Suggestions:
I wasn't able to do it because I ran out of time.
There wasn't enough time to do everything I needed to do.
I didn't have sufficient time to do everything. |
233,574 | I'm moving a couple of servers to a colo and was wondering what you would recommend for a hardware firewall to sit in front of them? Is it fine to just get the cheapest Cisco/Fortigate/Juniper/whatever firewall? I don't need anything fancy, pretty much just port forwarding. | 2011/02/09 | [
"https://serverfault.com/questions/233574",
"https://serverfault.com",
"https://serverfault.com/users/546/"
] | Here's an example for some criteria you'll want to consider when selecting a firewall in the scenario you described:
1. Feature set - Make sure it'll perform your immediate and potential future purposes.
2. Performance - Co-location generally provides good network connectivity and throughput. Make sure the device you pick will handle the anticipated loads you'll be capable of.
3. Form factor - You're paying to put equipment here, the smaller the equipment, the more you can pack in.
4. Management - Some devices offer features that make remote management easier, and give you tools in the event you find yourself unable to access it.
I imagine the brand names you've mentioned would have models capable of what you're asking. Most likely it would come down to performance and management of the equipment. | You are probably looking at "wasting" at least 1U of rack space for this firewall.
I would not buy a consumer-grade cheapie firewall.
The Juniper Netscreen SSG5 would probably meet your needs, but it is a paperback size format and doesn't come with rack arms (that I recall). The first "rackable" SSG is the SSG140, but that's not quite so cheap -- definitely overkill for your application here.
If you can figure out a way to mount it neatly, the SSG5 would almost certainly be sufficient. |
233,574 | I'm moving a couple of servers to a colo and was wondering what you would recommend for a hardware firewall to sit in front of them? Is it fine to just get the cheapest Cisco/Fortigate/Juniper/whatever firewall? I don't need anything fancy, pretty much just port forwarding. | 2011/02/09 | [
"https://serverfault.com/questions/233574",
"https://serverfault.com",
"https://serverfault.com/users/546/"
] | Here's an example for some criteria you'll want to consider when selecting a firewall in the scenario you described:
1. Feature set - Make sure it'll perform your immediate and potential future purposes.
2. Performance - Co-location generally provides good network connectivity and throughput. Make sure the device you pick will handle the anticipated loads you'll be capable of.
3. Form factor - You're paying to put equipment here, the smaller the equipment, the more you can pack in.
4. Management - Some devices offer features that make remote management easier, and give you tools in the event you find yourself unable to access it.
I imagine the brand names you've mentioned would have models capable of what you're asking. Most likely it would come down to performance and management of the equipment. | Alternatively - get a Mikrotik RB1100 and see how far it lasts (50mbit for smallish packets was on the table by someone running game servers).
It is CHEAP and has a TON of features in RouterOS. Uses very little power, too.
Then later you can upgrade to something more powerfull if needed. Again, the RB1100 is CHEAP to start with. |
233,574 | I'm moving a couple of servers to a colo and was wondering what you would recommend for a hardware firewall to sit in front of them? Is it fine to just get the cheapest Cisco/Fortigate/Juniper/whatever firewall? I don't need anything fancy, pretty much just port forwarding. | 2011/02/09 | [
"https://serverfault.com/questions/233574",
"https://serverfault.com",
"https://serverfault.com/users/546/"
] | I would not get the cheapest firewall. You need to look at your requirements such as throughput, active connections, security, vpn requirements and more. If it needs to be cheap I would recommend setting up a separate linux box as the firewall using iptables. If there is budget for a firewall but you need something small consider the cisco asa 5505(smaller than 1U), or if you need something with more requirements consider the 5510 or 5520 which are rack mountable. The cisco firewalls have a gui interface and after initial setup can be relatively easy to manage. | You are probably looking at "wasting" at least 1U of rack space for this firewall.
I would not buy a consumer-grade cheapie firewall.
The Juniper Netscreen SSG5 would probably meet your needs, but it is a paperback size format and doesn't come with rack arms (that I recall). The first "rackable" SSG is the SSG140, but that's not quite so cheap -- definitely overkill for your application here.
If you can figure out a way to mount it neatly, the SSG5 would almost certainly be sufficient. |
233,574 | I'm moving a couple of servers to a colo and was wondering what you would recommend for a hardware firewall to sit in front of them? Is it fine to just get the cheapest Cisco/Fortigate/Juniper/whatever firewall? I don't need anything fancy, pretty much just port forwarding. | 2011/02/09 | [
"https://serverfault.com/questions/233574",
"https://serverfault.com",
"https://serverfault.com/users/546/"
] | I would not get the cheapest firewall. You need to look at your requirements such as throughput, active connections, security, vpn requirements and more. If it needs to be cheap I would recommend setting up a separate linux box as the firewall using iptables. If there is budget for a firewall but you need something small consider the cisco asa 5505(smaller than 1U), or if you need something with more requirements consider the 5510 or 5520 which are rack mountable. The cisco firewalls have a gui interface and after initial setup can be relatively easy to manage. | Alternatively - get a Mikrotik RB1100 and see how far it lasts (50mbit for smallish packets was on the table by someone running game servers).
It is CHEAP and has a TON of features in RouterOS. Uses very little power, too.
Then later you can upgrade to something more powerfull if needed. Again, the RB1100 is CHEAP to start with. |
233,574 | I'm moving a couple of servers to a colo and was wondering what you would recommend for a hardware firewall to sit in front of them? Is it fine to just get the cheapest Cisco/Fortigate/Juniper/whatever firewall? I don't need anything fancy, pretty much just port forwarding. | 2011/02/09 | [
"https://serverfault.com/questions/233574",
"https://serverfault.com",
"https://serverfault.com/users/546/"
] | You are probably looking at "wasting" at least 1U of rack space for this firewall.
I would not buy a consumer-grade cheapie firewall.
The Juniper Netscreen SSG5 would probably meet your needs, but it is a paperback size format and doesn't come with rack arms (that I recall). The first "rackable" SSG is the SSG140, but that's not quite so cheap -- definitely overkill for your application here.
If you can figure out a way to mount it neatly, the SSG5 would almost certainly be sufficient. | Alternatively - get a Mikrotik RB1100 and see how far it lasts (50mbit for smallish packets was on the table by someone running game servers).
It is CHEAP and has a TON of features in RouterOS. Uses very little power, too.
Then later you can upgrade to something more powerfull if needed. Again, the RB1100 is CHEAP to start with. |
2,582,951 | Also I want to know how to add meta data while indexing so that i can boost some parameters | 2010/04/06 | [
"https://Stackoverflow.com/questions/2582951",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/150887/"
] | Lucene indexes text not files - you'll need some other process for extracting the text out of the file and running Lucene over that. | see <https://github.com/WolfgangFahl/pdfindexer>
for a java solution that uses PDFBox and Apache Lucene to split the PDF files page by page to text,
index these text-pages and create a resulting html index file that links to the pages in the pdf sources by using a corresponding open parameter. |
2,582,951 | Also I want to know how to add meta data while indexing so that i can boost some parameters | 2010/04/06 | [
"https://Stackoverflow.com/questions/2582951",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/150887/"
] | There are several frameworks for extracting text suitable for Lucene indexing from rich text files (pdf, ppt etc.)
* One of them is [Apache Tika](http://lucene.apache.org/tika/), a sub-project of Lucene.
* [Apache POI](http://poi.apache.org/) is a more general document handling project inside Apache.
* There are also some commercial alternatives. | see <https://github.com/WolfgangFahl/pdfindexer>
for a java solution that uses PDFBox and Apache Lucene to split the PDF files page by page to text,
index these text-pages and create a resulting html index file that links to the pages in the pdf sources by using a corresponding open parameter. |
2,582,951 | Also I want to know how to add meta data while indexing so that i can boost some parameters | 2010/04/06 | [
"https://Stackoverflow.com/questions/2582951",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/150887/"
] | You can use Apache [Tika](http://lucene.apache.org/tika/index.html). Tika is a toolkit for detecting and extracting metadata and structured text content from various documents using existing parser libraries.
Supported Document Formats
* HyperText Markup Language
* XML and derived formats
* Microsoft Office document formats
* OpenDocument Format
* Portable Document Format
* Electronic Publication Format
* Rich Text Format
* Compression and packaging formats
* Text formats
* Audio formats
* Image formats
* Video formats
* Java class files and archives
* The mbox format
The code will look like this.
Reader reader = new Tika().parse(stream); | see <https://github.com/WolfgangFahl/pdfindexer>
for a java solution that uses PDFBox and Apache Lucene to split the PDF files page by page to text,
index these text-pages and create a resulting html index file that links to the pages in the pdf sources by using a corresponding open parameter. |
2,314,637 | All, I am creating a web application and I need to give users the ability to add/edit/delete records in a grid type control. I can't use 3rd party controls so I am restricted to just whats in the box for asp.net (datagrid or gridview) or creating my own. Any thoughts on the best direction to go in. I'd like to keep the complexity level at a dull roar :)
thanks in advance
daniel | 2010/02/22 | [
"https://Stackoverflow.com/questions/2314637",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/164257/"
] | Gridviews have different item templates that you can use for editing and inserting data. That'd be an easy way to go about it.
As long as you set your datakeyid property to the primary key in the database, you should be able to make template fields based off of whether or not you're editing or inserting data. The command name of the button you use to fire the event will handle the statements required for updating/inserting data.
[This](http://www.aspdotnetcodes.com/GridView_Insert_Edit_Update_Delete.aspx) is a good site for some examples. | the out of the box grid is not too bad.
Here are a few links on master detail records in asp.net this should get you started on the CRUD opperations.
<http://www.exforsys.com/tutorials/asp.net-2.0/displaying-master-detail-data-on-the-same-page.html> <http://msdn.microsoft.com/en-us/library/aa581796.aspx>
<http://www.bing.com/search?q=asp.net+master+detail> |
2,314,637 | All, I am creating a web application and I need to give users the ability to add/edit/delete records in a grid type control. I can't use 3rd party controls so I am restricted to just whats in the box for asp.net (datagrid or gridview) or creating my own. Any thoughts on the best direction to go in. I'd like to keep the complexity level at a dull roar :)
thanks in advance
daniel | 2010/02/22 | [
"https://Stackoverflow.com/questions/2314637",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/164257/"
] | You should definitely use edit and insert templates. All you have to do is give the button/link the command name such as insert/delete/update and you can allow the Grid to do most of all the work.
[Check out this link](http://www.codeproject.com/KB/aspnet/InsertingWithGridView.aspx)
I think you'll learn to love the gridviews because they are pretty powerful. | the out of the box grid is not too bad.
Here are a few links on master detail records in asp.net this should get you started on the CRUD opperations.
<http://www.exforsys.com/tutorials/asp.net-2.0/displaying-master-detail-data-on-the-same-page.html> <http://msdn.microsoft.com/en-us/library/aa581796.aspx>
<http://www.bing.com/search?q=asp.net+master+detail> |
2,314,637 | All, I am creating a web application and I need to give users the ability to add/edit/delete records in a grid type control. I can't use 3rd party controls so I am restricted to just whats in the box for asp.net (datagrid or gridview) or creating my own. Any thoughts on the best direction to go in. I'd like to keep the complexity level at a dull roar :)
thanks in advance
daniel | 2010/02/22 | [
"https://Stackoverflow.com/questions/2314637",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/164257/"
] | Gridviews have different item templates that you can use for editing and inserting data. That'd be an easy way to go about it.
As long as you set your datakeyid property to the primary key in the database, you should be able to make template fields based off of whether or not you're editing or inserting data. The command name of the button you use to fire the event will handle the statements required for updating/inserting data.
[This](http://www.aspdotnetcodes.com/GridView_Insert_Edit_Update_Delete.aspx) is a good site for some examples. | this is the best site for what you are after
**www.Asp.Net**
* [**Data Access Tutorials controls**](http://www.asp.net/learn/data-access/)
* [**Master/Detail Using a Selectable
Master GridView with a Details
DetailView**](http://www.asp.net/learn/data-access/tutorial-10-cs.aspx)
* [**Using TemplateFields in the GridView
Control**](http://www.asp.net/learn/data-access/tutorial-12-cs.aspx)
**Others**
* [**Beginners Guide to the GridView
Control**](http://aspnet101.com/tutorials.aspx?id=51)
* [**The GridView Control**](http://www.hotscripts.com/listing/asp-net-2-0-free-tutorials-the-gridview-control/)
* [**IN-DEPTH LOOK AT THE GRIDVIEW CONTROL**](http://www.programminglearn.com/409/in-depth-look-at-the-gridview-control) |
2,314,637 | All, I am creating a web application and I need to give users the ability to add/edit/delete records in a grid type control. I can't use 3rd party controls so I am restricted to just whats in the box for asp.net (datagrid or gridview) or creating my own. Any thoughts on the best direction to go in. I'd like to keep the complexity level at a dull roar :)
thanks in advance
daniel | 2010/02/22 | [
"https://Stackoverflow.com/questions/2314637",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/164257/"
] | You should definitely use edit and insert templates. All you have to do is give the button/link the command name such as insert/delete/update and you can allow the Grid to do most of all the work.
[Check out this link](http://www.codeproject.com/KB/aspnet/InsertingWithGridView.aspx)
I think you'll learn to love the gridviews because they are pretty powerful. | this is the best site for what you are after
**www.Asp.Net**
* [**Data Access Tutorials controls**](http://www.asp.net/learn/data-access/)
* [**Master/Detail Using a Selectable
Master GridView with a Details
DetailView**](http://www.asp.net/learn/data-access/tutorial-10-cs.aspx)
* [**Using TemplateFields in the GridView
Control**](http://www.asp.net/learn/data-access/tutorial-12-cs.aspx)
**Others**
* [**Beginners Guide to the GridView
Control**](http://aspnet101.com/tutorials.aspx?id=51)
* [**The GridView Control**](http://www.hotscripts.com/listing/asp-net-2-0-free-tutorials-the-gridview-control/)
* [**IN-DEPTH LOOK AT THE GRIDVIEW CONTROL**](http://www.programminglearn.com/409/in-depth-look-at-the-gridview-control) |
5,914,507 | Hey all. I need to work on all of the skills that come along with working with web services in Android. Most of the apps I've worked on have used static/local data. Obviously, to create something powerful, I need to learn how to work with web services.
To that end, does anyone have any recommendations for an easy API to work with? I don't really have any preference (I'm doing this project just so I can learn), though I'd rather not work with Twitter.
So, I'm looking for one of the popular APIs, but something that's relatively simple so that I don't have to be bogged down in an ultra-complex API. I want to be able to focus more on the Android/Java implementation.
Thanks a lot! | 2011/05/06 | [
"https://Stackoverflow.com/questions/5914507",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/479180/"
] | You have many API that you can use to leverage your skills. Facebook is one of them but you can also have a look at websites such as Read It Later, Instapaper, Delicious or MeeGo that use simple web API with JSON/XML to transmit data. | My suggestion would be to go with Facebook;
<http://developers.facebook.com/docs/guides/mobile/#android>
While many others might disagree, some maybe saying it isn't a web service at all, personally I liked the idea of having many different kinds of data. And chose to do some experiments on top of Facebook Graph API based on pretty much same rationale you're describing here.
It really doesn't take long while to make your first connection, namely have your application authorized, and after you have an access token, Graph API is rather intuitive to use. And Facebook SDK doesn't make it any harder either.
Anyway, that's my two cents, nothing more, nothing less. |
5,914,507 | Hey all. I need to work on all of the skills that come along with working with web services in Android. Most of the apps I've worked on have used static/local data. Obviously, to create something powerful, I need to learn how to work with web services.
To that end, does anyone have any recommendations for an easy API to work with? I don't really have any preference (I'm doing this project just so I can learn), though I'd rather not work with Twitter.
So, I'm looking for one of the popular APIs, but something that's relatively simple so that I don't have to be bogged down in an ultra-complex API. I want to be able to focus more on the Android/Java implementation.
Thanks a lot! | 2011/05/06 | [
"https://Stackoverflow.com/questions/5914507",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/479180/"
] | My suggestion would be to go with Facebook;
<http://developers.facebook.com/docs/guides/mobile/#android>
While many others might disagree, some maybe saying it isn't a web service at all, personally I liked the idea of having many different kinds of data. And chose to do some experiments on top of Facebook Graph API based on pretty much same rationale you're describing here.
It really doesn't take long while to make your first connection, namely have your application authorized, and after you have an access token, Graph API is rather intuitive to use. And Facebook SDK doesn't make it any harder either.
Anyway, that's my two cents, nothing more, nothing less. | First web API I used was Flickr. They have great documentation, most (all?) of the data can be returned in JSON format, and it's pretty expansive. I thought it was pretty simple to use, myself. |
5,914,507 | Hey all. I need to work on all of the skills that come along with working with web services in Android. Most of the apps I've worked on have used static/local data. Obviously, to create something powerful, I need to learn how to work with web services.
To that end, does anyone have any recommendations for an easy API to work with? I don't really have any preference (I'm doing this project just so I can learn), though I'd rather not work with Twitter.
So, I'm looking for one of the popular APIs, but something that's relatively simple so that I don't have to be bogged down in an ultra-complex API. I want to be able to focus more on the Android/Java implementation.
Thanks a lot! | 2011/05/06 | [
"https://Stackoverflow.com/questions/5914507",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/479180/"
] | You have many API that you can use to leverage your skills. Facebook is one of them but you can also have a look at websites such as Read It Later, Instapaper, Delicious or MeeGo that use simple web API with JSON/XML to transmit data. | First web API I used was Flickr. They have great documentation, most (all?) of the data can be returned in JSON format, and it's pretty expansive. I thought it was pretty simple to use, myself. |
36,060 | I have read about sakkayaditti
<https://www.wisdomlib.org/definition/sakkayaditti>
Sakkayaditti means something in Buddhism, Pali.
please help me to clarify | 2019/11/22 | [
"https://buddhism.stackexchange.com/questions/36060",
"https://buddhism.stackexchange.com",
"https://buddhism.stackexchange.com/users/17327/"
] | This is a key concept in the Early Buddhist Texts:
>
> [MN 64](https://suttacentral.net/mn64/en/sujato#mn64:3.4): Anusetvevassa sakkāyadiṭṭhānusayo.
>
>
> [MN 64](https://suttacentral.net/mn64/en/sujato#mn64:3.4): Yet the underlying tendency to ***identity view*** still lies within them.
>
>
>
Identity View is the view that "I am". For example, we say, "I am Chinese" or "I am educated" or "I am poor", etc.
These personal perspectives contribute to suffering. If "I am poor", then "I want to be rich". If "I am ugly" then "I want to be beautiful". Through study and practice, we step away from personal perspectives and abandon Identity View as not satisfying, not conducive to happiness. To be an Arahant, to be a Realized One, Identity View is abandoned entirely.
Sakkāyadiṭṭhi is the [heresy of individuality](https://suttacentral.net/define/sakk%C4%81yadi%E1%B9%AD%E1%B9%ADhi)
To be clear, that does not mean that Buddhists are all alike. The Buddha in fact insisted that each of us find the truth for ourselves. What it means is that Buddhists are alike in dismissing personal cravings as unskillful and unwholesome. | This is misunderstood by many people today. They say sakkaya ditti means: self view. According to dhamma, when a peraon become 1st entrant (sotāpanna) he uproots the sakkaya ditti. So if sakkaya ditti means self view, then that person no need to go beyond that point, since there's noone (no self view) to attain nibbana.
So please think wise and don't get to the trap of self view.
Sakkaya diiti means: giving values to the things (in mind). Eg: Ferrari is a very good car, so its valuable (in mind). The food in ABC restaurant is very tasty so its worth going to that restaurant or eating that food. This view is called sakkaya ditti. When someone become 1st entrant; he understand that its a lie. Its not true. So he uproots the sakkaya dittia and become to samma ditti. Which is knowing that nothing is valuable but the Nirvana.
How to understand / realize that things doesn't have a value is a different topic. |
36,060 | I have read about sakkayaditti
<https://www.wisdomlib.org/definition/sakkayaditti>
Sakkayaditti means something in Buddhism, Pali.
please help me to clarify | 2019/11/22 | [
"https://buddhism.stackexchange.com/questions/36060",
"https://buddhism.stackexchange.com",
"https://buddhism.stackexchange.com/users/17327/"
] | This is a key concept in the Early Buddhist Texts:
>
> [MN 64](https://suttacentral.net/mn64/en/sujato#mn64:3.4): Anusetvevassa sakkāyadiṭṭhānusayo.
>
>
> [MN 64](https://suttacentral.net/mn64/en/sujato#mn64:3.4): Yet the underlying tendency to ***identity view*** still lies within them.
>
>
>
Identity View is the view that "I am". For example, we say, "I am Chinese" or "I am educated" or "I am poor", etc.
These personal perspectives contribute to suffering. If "I am poor", then "I want to be rich". If "I am ugly" then "I want to be beautiful". Through study and practice, we step away from personal perspectives and abandon Identity View as not satisfying, not conducive to happiness. To be an Arahant, to be a Realized One, Identity View is abandoned entirely.
Sakkāyadiṭṭhi is the [heresy of individuality](https://suttacentral.net/define/sakk%C4%81yadi%E1%B9%AD%E1%B9%ADhi)
To be clear, that does not mean that Buddhists are all alike. The Buddha in fact insisted that each of us find the truth for ourselves. What it means is that Buddhists are alike in dismissing personal cravings as unskillful and unwholesome. | >
> Ime kho, āvuso visākha, pañcupādānakkhandhā **sakkāyo** vutto
> bhagavatā
>
>
> These five clinging-aggregates are the **self-identification**
> described by the Blessed One.
>
>
> The craving that makes for further becoming — accompanied by passion &
> delight, relishing now here & now there — i.e., craving for sensual
> pleasure, craving for becoming, craving for non-becoming: This, friend
> Visakha, is the origination of self-identification described by the
> Blessed One
>
>
> Kathaṃ panāyye, **sakkāyadiṭṭhi** hotī ti?
>
>
> But, lady, how does **self-identification view** come about?
>
>
> There is the case, friend Visakha, where an uninstructed,
> run-of-the-mill person — who has no regard for noble ones, is not
> well-versed or disciplined in their Dhamma; who has no regard for men
> of integrity, is not well-versed or disciplined in their Dhamma —
> assumes form (the body) to be the self, or the self as possessing
> form, or form as in the self, or the self as in form.
>
>
> He assumes feeling to be the self...
>
>
> He assumes perception to be the self...
>
>
> He assumes (mental) fabrications to be the self...
>
>
> He assumes consciousness to be the self, or the self as possessing
> consciousness, or consciousness as in the self, or the self as in
> consciousness.
>
>
> This is how self-identification view comes about.
>
>
> [MN 44](https://www.accesstoinsight.org/tipitaka/mn/mn.044.than.html)
>
>
> |
36,060 | I have read about sakkayaditti
<https://www.wisdomlib.org/definition/sakkayaditti>
Sakkayaditti means something in Buddhism, Pali.
please help me to clarify | 2019/11/22 | [
"https://buddhism.stackexchange.com/questions/36060",
"https://buddhism.stackexchange.com",
"https://buddhism.stackexchange.com/users/17327/"
] | >
> Ime kho, āvuso visākha, pañcupādānakkhandhā **sakkāyo** vutto
> bhagavatā
>
>
> These five clinging-aggregates are the **self-identification**
> described by the Blessed One.
>
>
> The craving that makes for further becoming — accompanied by passion &
> delight, relishing now here & now there — i.e., craving for sensual
> pleasure, craving for becoming, craving for non-becoming: This, friend
> Visakha, is the origination of self-identification described by the
> Blessed One
>
>
> Kathaṃ panāyye, **sakkāyadiṭṭhi** hotī ti?
>
>
> But, lady, how does **self-identification view** come about?
>
>
> There is the case, friend Visakha, where an uninstructed,
> run-of-the-mill person — who has no regard for noble ones, is not
> well-versed or disciplined in their Dhamma; who has no regard for men
> of integrity, is not well-versed or disciplined in their Dhamma —
> assumes form (the body) to be the self, or the self as possessing
> form, or form as in the self, or the self as in form.
>
>
> He assumes feeling to be the self...
>
>
> He assumes perception to be the self...
>
>
> He assumes (mental) fabrications to be the self...
>
>
> He assumes consciousness to be the self, or the self as possessing
> consciousness, or consciousness as in the self, or the self as in
> consciousness.
>
>
> This is how self-identification view comes about.
>
>
> [MN 44](https://www.accesstoinsight.org/tipitaka/mn/mn.044.than.html)
>
>
> | This is misunderstood by many people today. They say sakkaya ditti means: self view. According to dhamma, when a peraon become 1st entrant (sotāpanna) he uproots the sakkaya ditti. So if sakkaya ditti means self view, then that person no need to go beyond that point, since there's noone (no self view) to attain nibbana.
So please think wise and don't get to the trap of self view.
Sakkaya diiti means: giving values to the things (in mind). Eg: Ferrari is a very good car, so its valuable (in mind). The food in ABC restaurant is very tasty so its worth going to that restaurant or eating that food. This view is called sakkaya ditti. When someone become 1st entrant; he understand that its a lie. Its not true. So he uproots the sakkaya dittia and become to samma ditti. Which is knowing that nothing is valuable but the Nirvana.
How to understand / realize that things doesn't have a value is a different topic. |
7,229,552 | I am trying to create a key/value database with 300,000,000 key/value pairs of 8 bytes each (both for the key and the value). The requirement is to have a very fast key/value mechanism which can query about 500,000 entries per second.
I tried BDB, Tokyo DB, Kyoto DB, and levelDB and they all perform very bad when it comes to databases at that size. (Their performance is not even close to their benchmarked rate at 1,000,000 entries).
I cannot store my database in memory because of hardware limitations (32 bit software), so memcached is out of the question.
I cannot use external server software as well (only a database module), and there is no need for multi-user support at all. Of course server software cannot hold 500,000 queries per second from a single endpoint anyways, so that leaves out Redis, Tokyo tyrant, etc. | 2011/08/29 | [
"https://Stackoverflow.com/questions/7229552",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/741628/"
] | I found a good benchmark comparison web page that basically compares 5 renowned databases:
* LevelDB
* Kyoto TreeDB
* SQLite3
* MDB
* BerkeleyDB
You should check it out before making your choice: <http://symas.com/mdb/microbench/>.
P.S - I know you've already tested them, but you should also consider that your configuration for each of these tests was not optimized as the benchmark shows otherwise. | 300 M \* 8 bytes = 2.4GB. That will probably fit into memory (if the OS does not restrict the address space to 31 bits)
Since you'll also need to handle overflow, (either by a rehashing scheme or by chaining) memory gets even tighter, for linear probing you probably need > 400M slots, chaining will increase the sizeof item to 12 bytes (bit fiddling might gain you a few bits). That would increase the total footprint to circa 3.6 GB.
In any case you will need a specially crafted kernel that restricts it's own "reserved" address space to a few hundred MB. Not impossible, but a major operation. Escaping to a disk-based thing would be too slow, in all cases. (PAE could save you, but it is tricky)
IMHO your best choice would be to migrate to a 64 bits platform. |
7,229,552 | I am trying to create a key/value database with 300,000,000 key/value pairs of 8 bytes each (both for the key and the value). The requirement is to have a very fast key/value mechanism which can query about 500,000 entries per second.
I tried BDB, Tokyo DB, Kyoto DB, and levelDB and they all perform very bad when it comes to databases at that size. (Their performance is not even close to their benchmarked rate at 1,000,000 entries).
I cannot store my database in memory because of hardware limitations (32 bit software), so memcached is out of the question.
I cannot use external server software as well (only a database module), and there is no need for multi-user support at all. Of course server software cannot hold 500,000 queries per second from a single endpoint anyways, so that leaves out Redis, Tokyo tyrant, etc. | 2011/08/29 | [
"https://Stackoverflow.com/questions/7229552",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/741628/"
] | 500,000 entries per second without holding the working set in memory? Wow.
In the general case this is not possible using HDDs and even difficult SSDs.
Have you any locality properties that might help to make the task a bit easier? What kind of queries do you have? | Berkely DB could do it for you.
I acheived 50000 inserts per second about 8 years ago and a final database of 70 billion records. |
7,229,552 | I am trying to create a key/value database with 300,000,000 key/value pairs of 8 bytes each (both for the key and the value). The requirement is to have a very fast key/value mechanism which can query about 500,000 entries per second.
I tried BDB, Tokyo DB, Kyoto DB, and levelDB and they all perform very bad when it comes to databases at that size. (Their performance is not even close to their benchmarked rate at 1,000,000 entries).
I cannot store my database in memory because of hardware limitations (32 bit software), so memcached is out of the question.
I cannot use external server software as well (only a database module), and there is no need for multi-user support at all. Of course server software cannot hold 500,000 queries per second from a single endpoint anyways, so that leaves out Redis, Tokyo tyrant, etc. | 2011/08/29 | [
"https://Stackoverflow.com/questions/7229552",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/741628/"
] | David Segleau, here. Product Manager for Berkeley DB.
The most common problem with BDB performance is that people don't configure the cache size, leaving it at the default, which is pretty small. The second most common problem is that people write application behavior emulators that do random look-ups (even though their application is not really completely random) which forces them to read data out of cache. The random I/O then takes them down a path of conclusions about performance that are not based on the simulated application rather than the actual application behavior.
From your description, I'm not sure if your running into these common problems or maybe into something else entirely. In any case, our experience is that Berkeley DB tends to perform and scale very well. We'd be happy to help you identify any bottlenecks and improve your BDB application throughput. The best place to get help in this regard would be on the BDB forums at: <http://forums.oracle.com/forums/forum.jspa?forumID=271>. When you post to the forum it would be useful to show the critical query segments of your application code and the db\_stat output showing the performance of the database environment.
It's likely that you will want to use BDB HA/Replication in order to load balance the queries across multiple servers. 500K queries/second is probably going to require a larger multi-core server or a series of smaller replicated servers. We've frequently seen BDB applications with 100-200K queries/second on commodity hardware, but 500K queries per second on 300M records in a 32-bit application is likely going to require some careful tuning. I'd suggest focusing on optimizing the performance of a the queries on the BDB application running on a single node, and then use HA to distribute that load across multiple systems in order to scale your query/second throughput.
I hope that helps.
Good luck with your application.
Regards,
Dave | Try [ZooLib](http://www.zoolib.org/).
It provides a database with a C++ API, that was originally written for a high-performance multimedia database for educational institutions called Knowledge Forum. It could handle 3,000 simultaneous Mac and Windows clients (also written in ZooLib - it's a cross-platform application framework), all of them streaming audio, video and working with graphically rich documents created by the teachers and students.
It has two low-level APIs for actually writing your bytes to disk. One is very fast but is not fault-tolerant. The other is fault-tolerant but not as fast.
I'm one of ZooLib's developers, but I don't have much experience with ZooLib's database component. There is also no documentation - you'd have to read the source to figure out how it works. That's my own damn fault, as I took on the job of writing ZooLib's manual over ten years ago, but barely started it.
ZooLib's primarily developer [Andy Green](http://www.em.net/) is a great guy and always happy to answer questions. What I suggest you do is subscribe to ZooLib's developer list at SourceForge then ask on the list how to use the database. Most likely Andy will answer you himself but maybe one of our other developers will.
ZooLib is Open Source under the MIT License, and is really high-quality, mature code. It has been under continuous development since 1990 or so, and was placed in Open Source in 2000.
Don't be concerned that we haven't released a tarball since 2003. We probably should, as this leads lots of potential users to think it's been abandoned, but it is very actively used and maintained. Just get the source from Subversion.
Andy is a self-employed consultant. If you don't have time but you do have a budget, he would do a very good job of writing custom, maintainable top-quality C++ code to suit your needs.
I would too, if it were any part of ZooLib other than the database, which as I said I am unfamiliar with. I've done a lot of my own consulting work with ZooLib's UI framework. |
7,229,552 | I am trying to create a key/value database with 300,000,000 key/value pairs of 8 bytes each (both for the key and the value). The requirement is to have a very fast key/value mechanism which can query about 500,000 entries per second.
I tried BDB, Tokyo DB, Kyoto DB, and levelDB and they all perform very bad when it comes to databases at that size. (Their performance is not even close to their benchmarked rate at 1,000,000 entries).
I cannot store my database in memory because of hardware limitations (32 bit software), so memcached is out of the question.
I cannot use external server software as well (only a database module), and there is no need for multi-user support at all. Of course server software cannot hold 500,000 queries per second from a single endpoint anyways, so that leaves out Redis, Tokyo tyrant, etc. | 2011/08/29 | [
"https://Stackoverflow.com/questions/7229552",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/741628/"
] | David Segleau, here. Product Manager for Berkeley DB.
The most common problem with BDB performance is that people don't configure the cache size, leaving it at the default, which is pretty small. The second most common problem is that people write application behavior emulators that do random look-ups (even though their application is not really completely random) which forces them to read data out of cache. The random I/O then takes them down a path of conclusions about performance that are not based on the simulated application rather than the actual application behavior.
From your description, I'm not sure if your running into these common problems or maybe into something else entirely. In any case, our experience is that Berkeley DB tends to perform and scale very well. We'd be happy to help you identify any bottlenecks and improve your BDB application throughput. The best place to get help in this regard would be on the BDB forums at: <http://forums.oracle.com/forums/forum.jspa?forumID=271>. When you post to the forum it would be useful to show the critical query segments of your application code and the db\_stat output showing the performance of the database environment.
It's likely that you will want to use BDB HA/Replication in order to load balance the queries across multiple servers. 500K queries/second is probably going to require a larger multi-core server or a series of smaller replicated servers. We've frequently seen BDB applications with 100-200K queries/second on commodity hardware, but 500K queries per second on 300M records in a 32-bit application is likely going to require some careful tuning. I'd suggest focusing on optimizing the performance of a the queries on the BDB application running on a single node, and then use HA to distribute that load across multiple systems in order to scale your query/second throughput.
I hope that helps.
Good luck with your application.
Regards,
Dave | We use [Redis](http://redis.io/). Written in C, its only slightly more complicated than memcached by design. Never tried to use that many rows but for us latency is very important and it handles those latencies well and lets us store the data in the disk
Here is a [bench mark blog entry](http://antirez.com/post/redis-memcached-benchmark.html), comparing redis and memcached. |
7,229,552 | I am trying to create a key/value database with 300,000,000 key/value pairs of 8 bytes each (both for the key and the value). The requirement is to have a very fast key/value mechanism which can query about 500,000 entries per second.
I tried BDB, Tokyo DB, Kyoto DB, and levelDB and they all perform very bad when it comes to databases at that size. (Their performance is not even close to their benchmarked rate at 1,000,000 entries).
I cannot store my database in memory because of hardware limitations (32 bit software), so memcached is out of the question.
I cannot use external server software as well (only a database module), and there is no need for multi-user support at all. Of course server software cannot hold 500,000 queries per second from a single endpoint anyways, so that leaves out Redis, Tokyo tyrant, etc. | 2011/08/29 | [
"https://Stackoverflow.com/questions/7229552",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/741628/"
] | 300 M \* 8 bytes = 2.4GB. That will probably fit into memory (if the OS does not restrict the address space to 31 bits)
Since you'll also need to handle overflow, (either by a rehashing scheme or by chaining) memory gets even tighter, for linear probing you probably need > 400M slots, chaining will increase the sizeof item to 12 bytes (bit fiddling might gain you a few bits). That would increase the total footprint to circa 3.6 GB.
In any case you will need a specially crafted kernel that restricts it's own "reserved" address space to a few hundred MB. Not impossible, but a major operation. Escaping to a disk-based thing would be too slow, in all cases. (PAE could save you, but it is tricky)
IMHO your best choice would be to migrate to a 64 bits platform. | We use [Redis](http://redis.io/). Written in C, its only slightly more complicated than memcached by design. Never tried to use that many rows but for us latency is very important and it handles those latencies well and lets us store the data in the disk
Here is a [bench mark blog entry](http://antirez.com/post/redis-memcached-benchmark.html), comparing redis and memcached. |
7,229,552 | I am trying to create a key/value database with 300,000,000 key/value pairs of 8 bytes each (both for the key and the value). The requirement is to have a very fast key/value mechanism which can query about 500,000 entries per second.
I tried BDB, Tokyo DB, Kyoto DB, and levelDB and they all perform very bad when it comes to databases at that size. (Their performance is not even close to their benchmarked rate at 1,000,000 entries).
I cannot store my database in memory because of hardware limitations (32 bit software), so memcached is out of the question.
I cannot use external server software as well (only a database module), and there is no need for multi-user support at all. Of course server software cannot hold 500,000 queries per second from a single endpoint anyways, so that leaves out Redis, Tokyo tyrant, etc. | 2011/08/29 | [
"https://Stackoverflow.com/questions/7229552",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/741628/"
] | Try [ZooLib](http://www.zoolib.org/).
It provides a database with a C++ API, that was originally written for a high-performance multimedia database for educational institutions called Knowledge Forum. It could handle 3,000 simultaneous Mac and Windows clients (also written in ZooLib - it's a cross-platform application framework), all of them streaming audio, video and working with graphically rich documents created by the teachers and students.
It has two low-level APIs for actually writing your bytes to disk. One is very fast but is not fault-tolerant. The other is fault-tolerant but not as fast.
I'm one of ZooLib's developers, but I don't have much experience with ZooLib's database component. There is also no documentation - you'd have to read the source to figure out how it works. That's my own damn fault, as I took on the job of writing ZooLib's manual over ten years ago, but barely started it.
ZooLib's primarily developer [Andy Green](http://www.em.net/) is a great guy and always happy to answer questions. What I suggest you do is subscribe to ZooLib's developer list at SourceForge then ask on the list how to use the database. Most likely Andy will answer you himself but maybe one of our other developers will.
ZooLib is Open Source under the MIT License, and is really high-quality, mature code. It has been under continuous development since 1990 or so, and was placed in Open Source in 2000.
Don't be concerned that we haven't released a tarball since 2003. We probably should, as this leads lots of potential users to think it's been abandoned, but it is very actively used and maintained. Just get the source from Subversion.
Andy is a self-employed consultant. If you don't have time but you do have a budget, he would do a very good job of writing custom, maintainable top-quality C++ code to suit your needs.
I would too, if it were any part of ZooLib other than the database, which as I said I am unfamiliar with. I've done a lot of my own consulting work with ZooLib's UI framework. | We use [Redis](http://redis.io/). Written in C, its only slightly more complicated than memcached by design. Never tried to use that many rows but for us latency is very important and it handles those latencies well and lets us store the data in the disk
Here is a [bench mark blog entry](http://antirez.com/post/redis-memcached-benchmark.html), comparing redis and memcached. |
7,229,552 | I am trying to create a key/value database with 300,000,000 key/value pairs of 8 bytes each (both for the key and the value). The requirement is to have a very fast key/value mechanism which can query about 500,000 entries per second.
I tried BDB, Tokyo DB, Kyoto DB, and levelDB and they all perform very bad when it comes to databases at that size. (Their performance is not even close to their benchmarked rate at 1,000,000 entries).
I cannot store my database in memory because of hardware limitations (32 bit software), so memcached is out of the question.
I cannot use external server software as well (only a database module), and there is no need for multi-user support at all. Of course server software cannot hold 500,000 queries per second from a single endpoint anyways, so that leaves out Redis, Tokyo tyrant, etc. | 2011/08/29 | [
"https://Stackoverflow.com/questions/7229552",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/741628/"
] | David Segleau, here. Product Manager for Berkeley DB.
The most common problem with BDB performance is that people don't configure the cache size, leaving it at the default, which is pretty small. The second most common problem is that people write application behavior emulators that do random look-ups (even though their application is not really completely random) which forces them to read data out of cache. The random I/O then takes them down a path of conclusions about performance that are not based on the simulated application rather than the actual application behavior.
From your description, I'm not sure if your running into these common problems or maybe into something else entirely. In any case, our experience is that Berkeley DB tends to perform and scale very well. We'd be happy to help you identify any bottlenecks and improve your BDB application throughput. The best place to get help in this regard would be on the BDB forums at: <http://forums.oracle.com/forums/forum.jspa?forumID=271>. When you post to the forum it would be useful to show the critical query segments of your application code and the db\_stat output showing the performance of the database environment.
It's likely that you will want to use BDB HA/Replication in order to load balance the queries across multiple servers. 500K queries/second is probably going to require a larger multi-core server or a series of smaller replicated servers. We've frequently seen BDB applications with 100-200K queries/second on commodity hardware, but 500K queries per second on 300M records in a 32-bit application is likely going to require some careful tuning. I'd suggest focusing on optimizing the performance of a the queries on the BDB application running on a single node, and then use HA to distribute that load across multiple systems in order to scale your query/second throughput.
I hope that helps.
Good luck with your application.
Regards,
Dave | 300 M \* 8 bytes = 2.4GB. That will probably fit into memory (if the OS does not restrict the address space to 31 bits)
Since you'll also need to handle overflow, (either by a rehashing scheme or by chaining) memory gets even tighter, for linear probing you probably need > 400M slots, chaining will increase the sizeof item to 12 bytes (bit fiddling might gain you a few bits). That would increase the total footprint to circa 3.6 GB.
In any case you will need a specially crafted kernel that restricts it's own "reserved" address space to a few hundred MB. Not impossible, but a major operation. Escaping to a disk-based thing would be too slow, in all cases. (PAE could save you, but it is tricky)
IMHO your best choice would be to migrate to a 64 bits platform. |
7,229,552 | I am trying to create a key/value database with 300,000,000 key/value pairs of 8 bytes each (both for the key and the value). The requirement is to have a very fast key/value mechanism which can query about 500,000 entries per second.
I tried BDB, Tokyo DB, Kyoto DB, and levelDB and they all perform very bad when it comes to databases at that size. (Their performance is not even close to their benchmarked rate at 1,000,000 entries).
I cannot store my database in memory because of hardware limitations (32 bit software), so memcached is out of the question.
I cannot use external server software as well (only a database module), and there is no need for multi-user support at all. Of course server software cannot hold 500,000 queries per second from a single endpoint anyways, so that leaves out Redis, Tokyo tyrant, etc. | 2011/08/29 | [
"https://Stackoverflow.com/questions/7229552",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/741628/"
] | David Segleau, here. Product Manager for Berkeley DB.
The most common problem with BDB performance is that people don't configure the cache size, leaving it at the default, which is pretty small. The second most common problem is that people write application behavior emulators that do random look-ups (even though their application is not really completely random) which forces them to read data out of cache. The random I/O then takes them down a path of conclusions about performance that are not based on the simulated application rather than the actual application behavior.
From your description, I'm not sure if your running into these common problems or maybe into something else entirely. In any case, our experience is that Berkeley DB tends to perform and scale very well. We'd be happy to help you identify any bottlenecks and improve your BDB application throughput. The best place to get help in this regard would be on the BDB forums at: <http://forums.oracle.com/forums/forum.jspa?forumID=271>. When you post to the forum it would be useful to show the critical query segments of your application code and the db\_stat output showing the performance of the database environment.
It's likely that you will want to use BDB HA/Replication in order to load balance the queries across multiple servers. 500K queries/second is probably going to require a larger multi-core server or a series of smaller replicated servers. We've frequently seen BDB applications with 100-200K queries/second on commodity hardware, but 500K queries per second on 300M records in a 32-bit application is likely going to require some careful tuning. I'd suggest focusing on optimizing the performance of a the queries on the BDB application running on a single node, and then use HA to distribute that load across multiple systems in order to scale your query/second throughput.
I hope that helps.
Good luck with your application.
Regards,
Dave | 500,000 entries per second without holding the working set in memory? Wow.
In the general case this is not possible using HDDs and even difficult SSDs.
Have you any locality properties that might help to make the task a bit easier? What kind of queries do you have? |
7,229,552 | I am trying to create a key/value database with 300,000,000 key/value pairs of 8 bytes each (both for the key and the value). The requirement is to have a very fast key/value mechanism which can query about 500,000 entries per second.
I tried BDB, Tokyo DB, Kyoto DB, and levelDB and they all perform very bad when it comes to databases at that size. (Their performance is not even close to their benchmarked rate at 1,000,000 entries).
I cannot store my database in memory because of hardware limitations (32 bit software), so memcached is out of the question.
I cannot use external server software as well (only a database module), and there is no need for multi-user support at all. Of course server software cannot hold 500,000 queries per second from a single endpoint anyways, so that leaves out Redis, Tokyo tyrant, etc. | 2011/08/29 | [
"https://Stackoverflow.com/questions/7229552",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/741628/"
] | David Segleau, here. Product Manager for Berkeley DB.
The most common problem with BDB performance is that people don't configure the cache size, leaving it at the default, which is pretty small. The second most common problem is that people write application behavior emulators that do random look-ups (even though their application is not really completely random) which forces them to read data out of cache. The random I/O then takes them down a path of conclusions about performance that are not based on the simulated application rather than the actual application behavior.
From your description, I'm not sure if your running into these common problems or maybe into something else entirely. In any case, our experience is that Berkeley DB tends to perform and scale very well. We'd be happy to help you identify any bottlenecks and improve your BDB application throughput. The best place to get help in this regard would be on the BDB forums at: <http://forums.oracle.com/forums/forum.jspa?forumID=271>. When you post to the forum it would be useful to show the critical query segments of your application code and the db\_stat output showing the performance of the database environment.
It's likely that you will want to use BDB HA/Replication in order to load balance the queries across multiple servers. 500K queries/second is probably going to require a larger multi-core server or a series of smaller replicated servers. We've frequently seen BDB applications with 100-200K queries/second on commodity hardware, but 500K queries per second on 300M records in a 32-bit application is likely going to require some careful tuning. I'd suggest focusing on optimizing the performance of a the queries on the BDB application running on a single node, and then use HA to distribute that load across multiple systems in order to scale your query/second throughput.
I hope that helps.
Good luck with your application.
Regards,
Dave | Berkely DB could do it for you.
I acheived 50000 inserts per second about 8 years ago and a final database of 70 billion records. |
7,229,552 | I am trying to create a key/value database with 300,000,000 key/value pairs of 8 bytes each (both for the key and the value). The requirement is to have a very fast key/value mechanism which can query about 500,000 entries per second.
I tried BDB, Tokyo DB, Kyoto DB, and levelDB and they all perform very bad when it comes to databases at that size. (Their performance is not even close to their benchmarked rate at 1,000,000 entries).
I cannot store my database in memory because of hardware limitations (32 bit software), so memcached is out of the question.
I cannot use external server software as well (only a database module), and there is no need for multi-user support at all. Of course server software cannot hold 500,000 queries per second from a single endpoint anyways, so that leaves out Redis, Tokyo tyrant, etc. | 2011/08/29 | [
"https://Stackoverflow.com/questions/7229552",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/741628/"
] | I found a good benchmark comparison web page that basically compares 5 renowned databases:
* LevelDB
* Kyoto TreeDB
* SQLite3
* MDB
* BerkeleyDB
You should check it out before making your choice: <http://symas.com/mdb/microbench/>.
P.S - I know you've already tested them, but you should also consider that your configuration for each of these tests was not optimized as the benchmark shows otherwise. | Try [ZooLib](http://www.zoolib.org/).
It provides a database with a C++ API, that was originally written for a high-performance multimedia database for educational institutions called Knowledge Forum. It could handle 3,000 simultaneous Mac and Windows clients (also written in ZooLib - it's a cross-platform application framework), all of them streaming audio, video and working with graphically rich documents created by the teachers and students.
It has two low-level APIs for actually writing your bytes to disk. One is very fast but is not fault-tolerant. The other is fault-tolerant but not as fast.
I'm one of ZooLib's developers, but I don't have much experience with ZooLib's database component. There is also no documentation - you'd have to read the source to figure out how it works. That's my own damn fault, as I took on the job of writing ZooLib's manual over ten years ago, but barely started it.
ZooLib's primarily developer [Andy Green](http://www.em.net/) is a great guy and always happy to answer questions. What I suggest you do is subscribe to ZooLib's developer list at SourceForge then ask on the list how to use the database. Most likely Andy will answer you himself but maybe one of our other developers will.
ZooLib is Open Source under the MIT License, and is really high-quality, mature code. It has been under continuous development since 1990 or so, and was placed in Open Source in 2000.
Don't be concerned that we haven't released a tarball since 2003. We probably should, as this leads lots of potential users to think it's been abandoned, but it is very actively used and maintained. Just get the source from Subversion.
Andy is a self-employed consultant. If you don't have time but you do have a budget, he would do a very good job of writing custom, maintainable top-quality C++ code to suit your needs.
I would too, if it were any part of ZooLib other than the database, which as I said I am unfamiliar with. I've done a lot of my own consulting work with ZooLib's UI framework. |
238,856 | Recently, I read a book called "Swallowed Star". In the story, a virus changes human DNA enough for humans to have unbelievable superpowers and skills. Some even obtain the ability to have their own gravitational pull and not breathe in space.
I want to know if it is actually possible for genes to be able to cause such things, or is it just impossible theoretically speaking if there isn't enough matter?
PS. Sorry if this sounds like a stupid question. I don't have the knowledge of space and viruses to answer this myself. Please forgive me. | 2022/12/03 | [
"https://worldbuilding.stackexchange.com/questions/238856",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/99833/"
] | Viruses and pathogens can affect everything that is based on genetic expression or biochemistry: there are known examples of pathogens changing the behavior of their hosts, for example, not forgetting that any pathogen tries to turn its host into a replicator of themselves.
What a virus cannot do is changing the laws of physics.
>
> Some even obtain the ability to have their own gravitational pull and not breathe in space
>
>
>
Changing the gravitational pull would require at least one of the three:
1. changing the gravitational constant G
2. changing the mass of the infected
3. changing the distance between the infected and the pulled object
1 is impossible based on what we know today about physics.
2 is trivial, a virus can induce mass weight or mass loss, but the effect is hardly appreciable, unless you want to step in the realm of mama jokes.
3 is also trivial and again hardly appreciable. We get closer or farther to many objects in our daily life, without even realizing that our gravitational pull on them is changing, because it's such a low pull that it can be taken as 0 | In real life many people have genes for diseases they will never have. The unlucky ones are the people who get cancer, for example, after suffering a severe infection. The Epstein-Barr virus "turns on" the genes responsible for a certain kind of blood cancer. This is called epi-genetics. It's still a developing field.
In your story, gaining superpowers by way of a virus infection could be explained by an epi-genetic change kicking in, though your human would have to already have the genes necessary to express that power. That can be explained by their ancestors also having had superpowers which would carry through the generations just like hair colour, height, handedness, and a million other characteristics.
[epi-genetic](/questions/tagged/epi-genetic "show questions tagged 'epi-genetic'") [superpowers](/questions/tagged/superpowers "show questions tagged 'superpowers'") [genetics](/questions/tagged/genetics "show questions tagged 'genetics'") |
238,856 | Recently, I read a book called "Swallowed Star". In the story, a virus changes human DNA enough for humans to have unbelievable superpowers and skills. Some even obtain the ability to have their own gravitational pull and not breathe in space.
I want to know if it is actually possible for genes to be able to cause such things, or is it just impossible theoretically speaking if there isn't enough matter?
PS. Sorry if this sounds like a stupid question. I don't have the knowledge of space and viruses to answer this myself. Please forgive me. | 2022/12/03 | [
"https://worldbuilding.stackexchange.com/questions/238856",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/99833/"
] | Viruses and pathogens can affect everything that is based on genetic expression or biochemistry: there are known examples of pathogens changing the behavior of their hosts, for example, not forgetting that any pathogen tries to turn its host into a replicator of themselves.
What a virus cannot do is changing the laws of physics.
>
> Some even obtain the ability to have their own gravitational pull and not breathe in space
>
>
>
Changing the gravitational pull would require at least one of the three:
1. changing the gravitational constant G
2. changing the mass of the infected
3. changing the distance between the infected and the pulled object
1 is impossible based on what we know today about physics.
2 is trivial, a virus can induce mass weight or mass loss, but the effect is hardly appreciable, unless you want to step in the realm of mama jokes.
3 is also trivial and again hardly appreciable. We get closer or farther to many objects in our daily life, without even realizing that our gravitational pull on them is changing, because it's such a low pull that it can be taken as 0 | I would argue that a sufficiently complex (that is, likely not natural) retro-virus could make some changes like super-strong, super-fast, likely significantly improved senses of sight and hearing. Even there it might only express (either fully or even partially) in children rather than already-grown individuals. And to effect children the retro-virus would need to infect gamete-producing tissues.
To do away with the need to breathe you would need to integrate an entirely different metabolic pathway, I suppose technically feasible, somehow, but seems unlikely. Even more unlikely for that alternative to be as energetically-favorable as using free oxygen from an atmosphere (that is, just as jet engines have better performance than rockets because they don't have to carry their oxidizer along with them). However, none of that seems as unlikely as modifying gravity.
None of those things are 'magical'. Basically imagine the most optimized organism you can think of along any given axis and it could probably be accomplished. |
238,856 | Recently, I read a book called "Swallowed Star". In the story, a virus changes human DNA enough for humans to have unbelievable superpowers and skills. Some even obtain the ability to have their own gravitational pull and not breathe in space.
I want to know if it is actually possible for genes to be able to cause such things, or is it just impossible theoretically speaking if there isn't enough matter?
PS. Sorry if this sounds like a stupid question. I don't have the knowledge of space and viruses to answer this myself. Please forgive me. | 2022/12/03 | [
"https://worldbuilding.stackexchange.com/questions/238856",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/99833/"
] | I would argue that a sufficiently complex (that is, likely not natural) retro-virus could make some changes like super-strong, super-fast, likely significantly improved senses of sight and hearing. Even there it might only express (either fully or even partially) in children rather than already-grown individuals. And to effect children the retro-virus would need to infect gamete-producing tissues.
To do away with the need to breathe you would need to integrate an entirely different metabolic pathway, I suppose technically feasible, somehow, but seems unlikely. Even more unlikely for that alternative to be as energetically-favorable as using free oxygen from an atmosphere (that is, just as jet engines have better performance than rockets because they don't have to carry their oxidizer along with them). However, none of that seems as unlikely as modifying gravity.
None of those things are 'magical'. Basically imagine the most optimized organism you can think of along any given axis and it could probably be accomplished. | In real life many people have genes for diseases they will never have. The unlucky ones are the people who get cancer, for example, after suffering a severe infection. The Epstein-Barr virus "turns on" the genes responsible for a certain kind of blood cancer. This is called epi-genetics. It's still a developing field.
In your story, gaining superpowers by way of a virus infection could be explained by an epi-genetic change kicking in, though your human would have to already have the genes necessary to express that power. That can be explained by their ancestors also having had superpowers which would carry through the generations just like hair colour, height, handedness, and a million other characteristics.
[epi-genetic](/questions/tagged/epi-genetic "show questions tagged 'epi-genetic'") [superpowers](/questions/tagged/superpowers "show questions tagged 'superpowers'") [genetics](/questions/tagged/genetics "show questions tagged 'genetics'") |
238,856 | Recently, I read a book called "Swallowed Star". In the story, a virus changes human DNA enough for humans to have unbelievable superpowers and skills. Some even obtain the ability to have their own gravitational pull and not breathe in space.
I want to know if it is actually possible for genes to be able to cause such things, or is it just impossible theoretically speaking if there isn't enough matter?
PS. Sorry if this sounds like a stupid question. I don't have the knowledge of space and viruses to answer this myself. Please forgive me. | 2022/12/03 | [
"https://worldbuilding.stackexchange.com/questions/238856",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/99833/"
] | There is no conceivable way for a change in a human's genes to enable them to alter the laws of physics (i.e. give them their own gravitational pull).
Not needing to breathe for extended periods could be made possible with some form of extremely efficient [anaerobic respiration](https://en.wikipedia.org/wiki/Anaerobic_respiration), which provides a body with energy without requiring oxygen. Currently, there are no genes in humans which code for a choice between anaerobic or [aerobic respiration](https://en.wikipedia.org/wiki/Cellular_respiration); whether an organism has [metabolic pathways](https://en.wikipedia.org/wiki/Metabolic_pathway) for breathing with oxygen (aerobic) or without oxygen (anerobic) is much more complicated than an on/off switch.
However, [modern gene editing technology](https://en.wikipedia.org/wiki/CRISPR_gene_editing) can splice foreign DNA segments into preexisting DNA strands, and has produced things such as [goats whose milk contains useful spider silk](https://phys.org/news/2010-05-scientists-goats-spider-silk.html) or [strawberries with flounder antifreeze genes for cold resistance](https://www.nytimes.com/2000/12/05/health/personal-health-gene-altered-foods-a-case-against-panic.html). Sometimes, it's done via artificially-altered viruses. It is therefore clearly possible for a virus to splice foreign DNA into an organism's genetic code in a manner causes physical changes (as opposed to simply being [non-coding ["junk"] DNA](https://en.wikipedia.org/wiki/Non-coding_DNA) which doesn't appear to do anything).
Essentially: there's absolutely no way people with their own gravitational pull are possible with anything that follows humanity's current understanding of the basic physical laws of the universe, but, conversely, I'd say it's *quite* likely that, even in real life, gene-altering technology will eventually enable altered people to breathe for *long* periods (if not indefinitely) without oxygen, and our gene-altering technology today already uses viruses on a regular basis. Big no on the gravity, medium yes on the lack of a need to breathe.
Dealing with the dangers posed to the human body by the hard vacuum, cosmic rays, and extreme temperature differences found in space, on the other hand, might be somewhat more difficult. And don't forget that even a human whose bodily processes run off of super-efficient anaerobic respiration will need to breathe oxygen eventually... | In real life many people have genes for diseases they will never have. The unlucky ones are the people who get cancer, for example, after suffering a severe infection. The Epstein-Barr virus "turns on" the genes responsible for a certain kind of blood cancer. This is called epi-genetics. It's still a developing field.
In your story, gaining superpowers by way of a virus infection could be explained by an epi-genetic change kicking in, though your human would have to already have the genes necessary to express that power. That can be explained by their ancestors also having had superpowers which would carry through the generations just like hair colour, height, handedness, and a million other characteristics.
[epi-genetic](/questions/tagged/epi-genetic "show questions tagged 'epi-genetic'") [superpowers](/questions/tagged/superpowers "show questions tagged 'superpowers'") [genetics](/questions/tagged/genetics "show questions tagged 'genetics'") |
238,856 | Recently, I read a book called "Swallowed Star". In the story, a virus changes human DNA enough for humans to have unbelievable superpowers and skills. Some even obtain the ability to have their own gravitational pull and not breathe in space.
I want to know if it is actually possible for genes to be able to cause such things, or is it just impossible theoretically speaking if there isn't enough matter?
PS. Sorry if this sounds like a stupid question. I don't have the knowledge of space and viruses to answer this myself. Please forgive me. | 2022/12/03 | [
"https://worldbuilding.stackexchange.com/questions/238856",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/99833/"
] | There is no conceivable way for a change in a human's genes to enable them to alter the laws of physics (i.e. give them their own gravitational pull).
Not needing to breathe for extended periods could be made possible with some form of extremely efficient [anaerobic respiration](https://en.wikipedia.org/wiki/Anaerobic_respiration), which provides a body with energy without requiring oxygen. Currently, there are no genes in humans which code for a choice between anaerobic or [aerobic respiration](https://en.wikipedia.org/wiki/Cellular_respiration); whether an organism has [metabolic pathways](https://en.wikipedia.org/wiki/Metabolic_pathway) for breathing with oxygen (aerobic) or without oxygen (anerobic) is much more complicated than an on/off switch.
However, [modern gene editing technology](https://en.wikipedia.org/wiki/CRISPR_gene_editing) can splice foreign DNA segments into preexisting DNA strands, and has produced things such as [goats whose milk contains useful spider silk](https://phys.org/news/2010-05-scientists-goats-spider-silk.html) or [strawberries with flounder antifreeze genes for cold resistance](https://www.nytimes.com/2000/12/05/health/personal-health-gene-altered-foods-a-case-against-panic.html). Sometimes, it's done via artificially-altered viruses. It is therefore clearly possible for a virus to splice foreign DNA into an organism's genetic code in a manner causes physical changes (as opposed to simply being [non-coding ["junk"] DNA](https://en.wikipedia.org/wiki/Non-coding_DNA) which doesn't appear to do anything).
Essentially: there's absolutely no way people with their own gravitational pull are possible with anything that follows humanity's current understanding of the basic physical laws of the universe, but, conversely, I'd say it's *quite* likely that, even in real life, gene-altering technology will eventually enable altered people to breathe for *long* periods (if not indefinitely) without oxygen, and our gene-altering technology today already uses viruses on a regular basis. Big no on the gravity, medium yes on the lack of a need to breathe.
Dealing with the dangers posed to the human body by the hard vacuum, cosmic rays, and extreme temperature differences found in space, on the other hand, might be somewhat more difficult. And don't forget that even a human whose bodily processes run off of super-efficient anaerobic respiration will need to breathe oxygen eventually... | I would argue that a sufficiently complex (that is, likely not natural) retro-virus could make some changes like super-strong, super-fast, likely significantly improved senses of sight and hearing. Even there it might only express (either fully or even partially) in children rather than already-grown individuals. And to effect children the retro-virus would need to infect gamete-producing tissues.
To do away with the need to breathe you would need to integrate an entirely different metabolic pathway, I suppose technically feasible, somehow, but seems unlikely. Even more unlikely for that alternative to be as energetically-favorable as using free oxygen from an atmosphere (that is, just as jet engines have better performance than rockets because they don't have to carry their oxidizer along with them). However, none of that seems as unlikely as modifying gravity.
None of those things are 'magical'. Basically imagine the most optimized organism you can think of along any given axis and it could probably be accomplished. |
263,517 | I'm trying to set a different existing material on 5 Instances made with Instance on Points. Trying both 3.0.1 and 3.1 to no avail.
Is there any value or attribute that signifies which instance you are on?
I want to build a setup for texture painting with 5 copies of a character and therefore I am linking a rigify rig with the meshes that gets instanced. That seems to make it trickier if not impossible to do custom attributes.
Either want to change material for each copied instance or have some way to swap textures in a shader graph. As long as you can paint a different texture on each copy.
I've tried these three answers to similar issue without results:
[Set material for instances problem (Blender 3.0)](https://blender.stackexchange.com/questions/244208/set-material-for-instances-problem-blender-3-0),
[Control Instance Color with Geometry Nodes](https://blender.stackexchange.com/questions/213224/control-instance-color-with-geometry-nodes),
[How to assign a different material color to each geometry nodes instance](https://blender.stackexchange.com/questions/254648/how-to-assign-a-different-material-color-to-each-geometry-nodes-instance) | 2022/05/13 | [
"https://blender.stackexchange.com/questions/263517",
"https://blender.stackexchange.com",
"https://blender.stackexchange.com/users/27347/"
] | After a bit of faffing around, I've so far established that the *Set Material Index* node will work only if the incoming geometry, with materials assigned to slots, is on the same branch. The materials do not have to be assigned to faces of the incoming geometry... it just has to have its slots filled.
In this example, the incoming geometry is just a plane, with 4 material slots.
[](https://i.stack.imgur.com/Vl4WS.png)
Cubes instanced on a line have their instance indices stashed, before *Realize Instance* wipes them.
A function of the stashed indices is used to *Set Material Index*, while the (material-slot-bearing) incoming geometry is on the same branch.
The incoming geometry has been tagged, so can be selectively deleted before output.
[](https://i.stack.imgur.com/9LAB4.png)
The GN-generated cubes are now assigned the separate materials, per-instance, as expected. | Managed to figure it out with inspiration from this answer:[How to access geonode generated "instance ID" from Cycles material?](https://blender.stackexchange.com/questions/248920/how-to-access-geonode-generated-instance-id-from-cycles-material?rq=1)
My node setup looks like below and assigns materials all in geometry nodes:
[](https://i.stack.imgur.com/864NR.png)
[](https://i.stack.imgur.com/eG7kP.png) |
23,654 | My neighbor who lives across the hall from me in my apartment building is clearly trying to extend an olive branch of friendship. We met at a community gathering for residents a little over a month ago and got along splendidly, but due to opposing work schedules we have not seen each other since. I gather he has some social or professional contact wherein he can get free tickets to sporting events, because for the second time since we exchanged numbers, I've had to politely decline an invitation to a football game. I travel a lot for work, so I legitimately was and will be out of town on the dates in question.
Having just moved here recently, I don't have any friends and would welcome the companionship. My problem is twofold:
1. I don't want him to think that I'm blowing him off. People who consistently refuse invites -- even with good excuses -- stop getting invitations after a while.
2. I have a non-obvious, hard-to-explain visual impairment that makes sporting events *in particular* a no-go for me. It's a neurological condition that affects motion tracking and object recognition, so playing or watching sports is nearly impossible for me to enjoy. Aside from that (or maybe because of it), I'm not much of a sports guy anyway.
I want to let him know I appreciate the overture, and I figure the best thing to do would be to make a counter-proposal. But I don't really know how to do that. Personality-wise I'm an ambivert, so I do well in social situations most of the time; I just don't know how to initiate them.
* I have a very spartan, bachelor-esque studio apartment, so inviting him across the hall is out. I don't have anywhere to entertain guests. I don't even own a TV; I work in IT for a living, so my computer provides all my entertainment needs.
* I don't know what his interests are. Sporting events are such a stereotypical "guy" thing, so no real insight there. He's a lawyer professionally, so I don't know how our social spheres would intersect.
* I'm a homebody by nature and a recent transplant to the area, so I don't know much about what there is to do around town. I've found a few bars and restaurants that I like, but one-on-one those options sound like a date and I don't want to make things awkward. I have no idea what his intentions are.
* I'm rarely available on weekends, so any get-together would likely need to happen in the evening during the week. That precludes most festivals or block party-type events as those typically happen on Friday or Saturday nights.
I don't really know how to ask people to do things with me. How can I reciprocate or otherwise display that I am interested?
Also, how do I respond if he invites me to a game again and I'm actually free to go? | 2019/12/04 | [
"https://interpersonal.stackexchange.com/questions/23654",
"https://interpersonal.stackexchange.com",
"https://interpersonal.stackexchange.com/users/284/"
] | Honesty is the best policy here. He's only going to feel like you're "blowing him off" if your refusals are without reason. If you think more offers are forthcoming, your next response should be something like:
>
> Yes!
>
>
>
Or, if you can't, then:
>
> I'm sorry I keep turning down your invites, I really want to hang out but weekends are usually difficult for me. Can we do something on a weeknight instead?
>
>
>
As you are new in town and want to make friends, you should make an extra effort to take up this offer of friendship, no matter what the event. Unless being at a sports match is physically uncomfortable for you, why not just go along anyway and be honest - say something like "actually, I can't really follow sports because of a vision problem, but I appreciate the company". You can perhaps talk, have a few beers, and find something in common that you can bond over even if the sport doesn't hold any interest for you. In fact, most friendships/relationships rely on some give and take when it comes to choosing places to go, events to attend etc. If you are worried about the fact you've turned down his offers before, he might actually really appreciate it when he learns you came along to a sports match you can't watch properly just for the friendship.
Even if you don't think you're going to be best buddies with this guy because you have different interests, you'll soon meet other people through him, and you may get along better with them. That doesn't mean you're using him to meet people - if he attends things like the community event you met at and *still* wants to make new friends he sounds a pretty gregarious person that is welcoming you, not just into his life, but into his social group.
If you think you've already refused him too many times to get another invite, why not initiate contact and still say the above - that you'd like to hang, but weekends are difficult. See what happens. As he's contacted you several times with offers, he won't think it unusual that you've reached out to him.
If he suggests a one-to-one meeting rather than some social event, let him also suggest the venue - it's unlikely he will invite himself to your house, and if he suggests a bar or restaurant then it shouldn't be any place or setting that will make him feel weird. There are restaurants that feel like a date, but there are loads of places that are casual and normal places for platonic dates. | **My answers to you questions**
I am one of those people readily sending invitations to new acquaintances until I am tired of getting only "No, no" 's. I made a rule out of it: You're out at three no's in a row. You know too well why:
>
> I make him think that I'm blowing him off.
>
>
>
I have a second rule though: Back on track after the first invitation I get. So:
>
> How can I reciprocate or otherwise display that I am interested?
>
>
>
Show interest! Send an invitation. That easy.
>
> How do I respond if he invites me to a game again and I'm actually free to go?
>
>
>
Send him your point 2. Crystal clear for him.
You should not let him lose his time with invitations that you can't even *physiologically* accept.
**My own two cents on top of that**
To be honest, I am quite surprised to see how long your list of expectations, requirements, wonderings or fears (?) is. I find it quite interesting too - if not quite revealing - that you managed to put eleven "don't" or "don't know" in one single post.
I don't think there are many ways to put it:
Stop asking yourself too many questions. You don't go gambling with your life, you go for a nice chat with a good guy. You want to talk to him, he obviously does too, so go for it! It'll be fine.
If you really want to take all those parameters into account, here is my call: copy the link to your SE question and send it to him. You show interest. He knows what he should know. And you two can plan together your first common activity. |
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