What's the Name of this Natural Disaster Movie? It's possibly a Sci-Fi action Film too
Short science fiction film about a Midwest farmer who builds a bunker after finding a space plant
Can I safely use my camera with a external power supply? The general advise is that you should not call GC.Collect from your code, but what are the exceptions to this rule?  I can only think of a few very specific cases where it may make sense to force a garbage collection.   One example that springs to mind is a service, that wakes up at intervals, performs some task, and then sleeps for a long time. In this case, it may be a good idea to force a collect to prevent the soon-to-be-idle process from holding on to more memory than needed.   Are there any other cases where it is acceptable to call GC.Collect? How can I find the codes related to a function in GAP? When I use "??" in front of the name of function there is no help, so I want to find the code of function among packages. How can I get a more traditional drop-down like menu for Unity? How do I perform a Perl substitution on a string while keeping the original? When searching for "Skype" I always see these 2 entries.  There is this duplicate blank Skype icon. Both of them seem to run Skype in the same way.    But I've checked both /usr/share/applications, and ~/.local/share/applications, and can't find the extra icon so I can delete it.    Also as described , sometimes similar ghost icons are present even after removing associated applications. If $a$ and $b$ commute and $\text{gcd}\left(\text{ord}(a),\text{ord}(b)\right)=1$, then $\text{ord}(ab)=\text{ord}(a)\text{ord}(b)$. Prove if $\operatorname{ord}(a)=m$, $\operatorname{ord}(b)=n$, and $\operatorname{gcd}(m,n)=1$, then $\operatorname{ord}(ab)=mn$.   I was reading this and was thinking how this proof would look like. I tried to do it and am not sure if this is correct. Here is what I did:  If $a$ and $b$ commute then $(ab)^{mn} = a^{mn} * b^{mn} = (a^m)^n * (b^n)^m = 1 * 1 = 1.$ So $ord(ab) | mn$.  Now, take $k = \operatorname{ord}(ab) = m^\prime * n^\prime$ where m' is relatively prime with $n$ and $n'$ is relatively prime with $m$. By the result above $m' | m$ and $n' | n$. Now we have $((ab)^k)^{m/m'} = 1$ since $(ab)^k=1$. But on the other hand, by the commutativity:  $$((ab)^k)^(m/m') =$$  $$((ab)^(m' * n'))^(m/m') =$$  $$ a^{n'm} * b^{n'm} = $$  $$(a^m)^{n'} * b^{n'm'}=$$  $$b^{n'm'} = 1$$  This implies that $n' * m'$ is divisible by $n$. But $m'$ is relatively prime with $n$, so we must have $n' = n.$ By symmetry, $m' = m$. So $ord(ab) = mn$.  Just to say this again, I want to prove if $a$ and $b$ commute and $m$ and $n$ are relatively prime then   $$ord(ab)=mn.$$   The comments are vague. I guess this must be the answer then and there probably is not another way to do this. This post pretty much summarizes my question :   I know for a fact that Mac and Linux are both Unix based  And the commands for Linux should work for Mac, but with limited knowledge for programming I couldn't get it to work.  EDIT: Just saw this -  currently working on it How to delete a registry value in C# Merging two incoming broadband lines for faster Internet Minecraft extra folders? Once I click to run minecraft a small window appears saying "Downloading runtime", then three other folders appear onto my desktop: Game, Native Log, and Runtime. This really annoys me, as I have to keep deleting them after I am done with a session of minecraft. Why is this? It never use to happen before. Is there any way to recover unsaved notepad++ docs? I had to immediate shut down, and I lost about 20 unsaved tabs, is there any way to recover these? tar and its key letters: is it a bug or feature? I am wondering to ask the difference of these two commands (i.e. only the order of their options are different):   tar -zxvf foo.tar.gz tar -zfxv foo.tar.gz   The first one ran perfectly but the second one said:  tar: You must specify one of the `-Acdtrux' or `--test-label'  options Try `tar --help' or `tar --usage' for more information.   And tar with --test-label and -zfxv said :  tar (child): xv: Cannot open: No such file or directory tar (child): Error is not recoverable: exiting now tar: Child returned status 2 tar: Error is not recoverable: exiting now   Then I looked at tar manual and realised that all the example there are using switch -f in the end!!  AFAICT there is no need for this restriction, or is there?! because in my view switches should be order free. I am trying to slice up my models using the Boolean modifier.  After applying the modifier on my smooth mesh, I get the expected result, a flat dissection to separate my mesh into two.  The problem lies in how I can resolve the visual "jaggered" edge that separates my (smooth) mesh exterior from the flat dissection face.    Is it possible to achieve a smooth-to-flat variation without this artifact?   I tried to alter a mixture of the two but end up with artifacts, or unwanted blocky flat mesh faces around the dissection edge of my mesh. I've a Skype interview for PhD application (it will make me miss  today.) I've been asked, in advance, to prepare a short presentation and then there would be some discussion with the panel (I guess.) I expect that they will ask if I have some questions so, I'm wondering what are the best (type of) questions one might consider? How will Cryptography be changed by Quantum Computing? I realise this isn't a 'yes or no' question, and I apologise for asking something that could be seen as a discussion thread, but I had to ask.  I'm currently doing an EPQ in CS (specifically how QC will change Cryptography). I'm trying to gather up topics to cover, and so far I've scribbled down -  Effects -   National security, classical cryptographic methods (RSA, DSA, AES-256). Including Shor's algorithm. Communications Online services, e.g. BitCoin.   How would we counter this (not sure how better to phrase this) -   Lattice-based Multivariate Hash-based signatures Code-based cryptography   Is there anything else you'd recommend me including (as well as the above), or anything in the above you don't think I should include?   Honestly, the list above is a rough, first draft the main bulk of it... so don't it as gospel.  Best regards,  Cameron. Is there a rule to understand how the group "Cha" has to be pronounced?  "Character" sounds with a hard first syllable, while "Charm" sound softer, but I don't find how to tell which sound to use before earing someone saying the word. It could be because of the double consonant "rm" vs "ra"? Or is it just a matter of knowing the rule for every single word?  EDIT: More specifically, let's talk about UK English pronunciation. How to evaluate $\int_{0}^{\infty}\exp(-x^2-1/x^2)dx$? Question :  $$\int_{0}^{\infty}\exp(-x^2-1/x^2)dx=?$$  I think the answer is $\sqrt{ \pi/2 \cdot \exp(-2)}$  If I change $-x^2-1/x^2$ to $-(x-1/x)^2-2$ then the above integral becomes    $$\exp(-2)\int_{0}^{\infty} \exp(-(x-1/x)^2)dx$$   integral of $\exp(-x^2)dx$ from $0$ to infinity = square root of $\pi/2$, but then is the   integral of $\exp(-(x-1/x)^2)dx$ from $0$ to infinity=integral of $\exp(-x^2)dx$ from $0$ to infinity ? Exec format error of gcc-compiled Hello World c++ On AWS Ubuntu Server, I wrote C++ Hello, World program:  #include &lt;iostream&gt; using namespace std;  int main(){         cout&lt;&lt;"Hello, World!"&lt;&lt;endl;         return 0; }   And compiled it:  ubuntu@ip-xxxxx:~/dev/c++$ g++ -c ./test.cc -o out ubuntu@ip-xxxxx:~/dev/c++$ chmod a+x out ubuntu@ip-xxxxx:~/dev/c++$ ./out -bash: ./out: cannot execute binary file: Exec format error ubuntu@ip-xxxxx:~/dev/c++$ file ./out ./out: ELF 64-bit LSB  relocatable, x86-64, version 1 (SYSV), not stripped ubuntu@ip-xxxxx:~/dev/c++$ uname -a Linux ip-xxxxx 3.13.0-48-generic #80-Ubuntu SMP Thu Mar 12 11:16:15 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux ubuntu@ip-xxxxx:~/dev/c++$ gcc --version gcc (Ubuntu 4.8.4-2ubuntu1~14.04) 4.8.4   It seems that architecture x86-64 is the same each other. What is the problem here? Do I have to add more C++ flags? this principled shader node cant be shown in blender 2.78? As you can see appears "undefined" the PBT Principled shader node from blender 2.79, and I need to use it.  Is there a way or other alternative for rendering PBR Textures with all the same input settings that this shader has?