How do these particles sort themselves by size?
Why do the big nuts always remain at top? The Brazil-nut Effect
How to merge an unallocated partition with an extended partition? Consider the following MWE:  \documentclass{article} \usepackage{pstricks} \begin{document} A \end{document}   It produces the error  Runaway argument? ] {pgffor.code.tex}  ! Paragraph ended before \ProvidesPackageRCS@i was complete. &lt;to be read again&gt;                     \par  l.11   How do I fix this? Why are some faces in my mesh darker? While rendering a mesh with smooth shading on, I get a dark region/shadow on certain faces. The effect is more evident when smooth shading is applied to a mesh containing ngons, with the ngons turning black when rendered.   The blackening effect is visible in the viewport too.  How can I solve this problem? What is safe to exclude for a full system backup? Algorithm over 2 pages I am writing a few rather large pseudocode functions using algorithm and algorithmic, i.e. my code looks something like:  \begin{algorithm}                      \caption{Coolest Algorithm ever}           \label{findme}                           \begin{algorithmic} [1]                   % enter the algorithmic environment \REQUIRE    Here are a few variables \\             variable 2 \\             variable 3  \ENSURE     this is the output \\             output 2  \STATE $some cool code here$ \STATE $some cool code here$ \STATE $some cool code here$ \STATE $some cool code here$ \end{algorithmic} \end{algorithm}   Unfortunately this code does not fit on one page and I am definitely not able to split it into some subfunctions or so (I already did that as far as possible).  So now I need to split up the algorithm into two pages, but I have no idea how.  The easiest way I can imagine is just to start a new algorithm on the new page, but this time letting the line counter start at line 35 or so instead of 1. But how can I do that?  Please not that there is already a similar question here on this site, but it deals with the package algorithmicx. How many edges does an undirected tree with $n$ nodes have? Mathematical Prerequisites for QFT Difference between 2>&-, 2>/dev/null, |&, &>/dev/null and >/dev/null 2>&1 Comma separated values in one column - SQL SERVER Does kinetic friction increase as speed increases? Possible Duplicate:          Layman alert...I last did physics in high school, and am just trying to understand something my son is working on.   To keep a box moving across the floor at a constant velocity I need to apply a force equal and opposite to that of the  force working on it.  If I start applying a force greater than the kinetic friction force, the box will speed up. Will it keep speeding up indefinitely, or will the kinetic friction force I need to overcome increase as the box gets faster? Revisiting question templates suggested to have templates for tags. Their example was with the  tag on Stack Overflow.  I'm suggesting a more general approach:  Templates, Mark II  I suggest that each site will have a template. That template will prefill the  textbox when a new question is asked. However, it will be completely optional.  Something like (for Stack Overflow):  ## The Problem ## { Please tell us what the problem is with as many details as possible.   Include language, operating system, and any other relevant information.   Remember to add the relevant tags below, too. } ## Attempted Solutions ## { Please tell us what you've tried so far. Have you tried searching Google?    What queries? } ## Existing Code ## { Do you have any existing code to show? Please keep it short and simple.    We should be able to detect the problem right away. }   Why am I suggesting this?  Well, it seems as though most users will stick with the default. They don't bother to read, and so prefilling the question form for them with information that we know might be relevant, will forceWe'll get to that in a second them to actually stop and read.  Scenarios:   Best case: User arrives to ask a question, actually reads the template, fills the correct information in the placeholders. (Yeah, because that'll happen a lot) Neutral: User simply removes all of the template text and rewrites their own question. Result is exact same as we have currently. Worst case: User will ignore or misunderstand the template, will use it wrong or not at all and we'll get something like  &lt;template text here, still unfilled&gt; &lt;(crappy) question&gt;   This can be solved in a couple different ways. We could detect the template tags (i.e. { }, subject to discussion), and throw an error when a user attempts to post with them still available. We could also act more autonomously and remove placeholders which still exist.    Some more points:   Templates should be per-site, not per-tag. Sure, there are differences between the tags, but all questions are expected to have the same general information, and this isn't meant to be a rule, but a guideline to help write better questions. Site templates should be editable by that site's mods, like close reasons. We could autofocus on the first placeholder, and perhaps implement TAB to jump from one placeholder to the other, similar to mixins in IDEs. This doesn't have to be implemented everywhere. This suggestion makes sense to Stack Overflow or Superuser, but not to Anime &amp; Manga or Gaming All of the details are subject to discussion, and all discussion is welcomed. A tool to measure signal strength of wireless I want to know if there exists any command line option or GUI tool (Ubuntu 11.10) so that I can measure the strength of wireless signal at a given location. I have a house where the wireless is not easily accessible at all corners I want to know at which corners or rooms the signal is weak. Search and replace registry entry value using powershell CSS bug with printing site pages (now with 100% more suggested fix included!) Error Message: It looks like your post is mostly code; please add some more details How do you solve the following error when creating a simple post?     It looks like your post is mostly code; please add some more details How to remove symbolic link I was trying to create this symbolic link:  sudo ln -s /usr/share/phpmyadmin /var/www/phpmyadmin   but I accidentally typed:  sudo ln -s /usr/share/php,yad,in /var/www/phpmyadmin   So now I want to correct it but it says symbolic link already exist. Why is this sentence correct?     She suggested that he go to the cinema.   I would definitely use goes instead of go. Software to read a QR code? I saw a  reading a book, but I don't have a smart phone to check it.    So I just took a picture of it and saved my PC. And I downloaded libdecoderqr0, libdecodeqr-dev, libdecodeqr-examples for reading it. But I don't know how to use it.    What do I do next, or is there a nicer way to read QR codes? Arrive steering behavior Why can't enum's constructor access static fields and methods? This is perfectly valid with a class, but is not allowed with an enum.  What I'm trying to do is store my enum instances in a static Map. Consider this example code which allows lookup by abbreivation:  public enum Day {     Sunday("Sun"), Monday("Mon"), Tuesday("Tue"), Wednesday("Wed"), Thursday("Thu"), Friday("Fri"), Saturday("Sat");      private final String abbreviation;      private static final Map&lt;String, Day&gt; ABBREV_MAP = new HashMap&lt;String, Day&gt;();      private Day(String abbreviation) {         this.abbreviation = abbreviation;         ABBREV_MAP.put(abbreviation, this);  // Not valid     }      public String getAbbreviation() {         return abbreviation;     }      public static Day getByAbbreviation(String abbreviation) {         return ABBREV_MAP.get(abbreviation);     } }   This will not work as enum doesn't allow static references in its constructor. It however works just find if implemented as a class:  public static final Day SUNDAY = new Day("Sunday", "Sun"); private Day(String name, String abbreviation) {     this.name = name;     this.abbreviation = abbreviation;     ABBREV_MAP.put(abbreviation, this);  // Valid }