Today I came across this, during a web search:    Is this some kind of clone?
of Stack Overflow, all content posted on Stack Exchange sites by their users (i.e. you wonderful people) has been provided to the whole universe under . For my fellow non-lawyers, that license basically means:   Anyone can use any Stack Exchange posts at any time without having to ask for permission Making money off of the copied content is permitted You don't even have to copy stuff from here verbatim; you can just use it as a starting point and make whatever edits you want There are just two rules you have to follow:   You have to provide . Simple links to the original post and author info are just fine. You have to  and allow other people to use your content, as long as they follow these very same rules. How meta!    (If you ever forget any of that, and want to refresh your memory, the license info is linked to in the footer of every page.)  There are, in fact, a lot of people who republish varying amounts of our content for assorted reasons. Unfortunately, there are some Stack Content Republishers Attributing Poorly and/or Excelling at Ranking (SCRAPERs, for short).  In this context, "attributing poorly" means any use that doesn't follow our attribution rules or make any other reasonable attempt at give credit. This can get pretty egregious; I've seen SCRAPERs that not only don't link back to SE originals, but also use fake author info and post dates to make it harder to find originals. By "excelling at ranking," I'm referring to copycat sites that end up higher in Google results than the original SE sites do for the same content. That's not necessarily wrong, but in some cases, it indicates inappropriate SEO hackery.  So, the question is: what can you do if you spot a SCRAPER?
StackExchange drop down hiding chat, blog and log out, concerns Why does chmod +w not give write permission to other(o) When I run chmod +w filename it doesn't give write permission to other, it just gives write permission to user and group.  After executing this command  chmod +w testfile.txt   running ls -l testfile.txt prints  -rw-rw-r-- 1 ravi ravi 20 Mar 10 18:09 testfile.txt   but in case of +r and +x it works properly.  I don't want to use chmod ugo+w filename. When saving a .qgs file in QGIS, another appears. Is this a backup? When saving a project file (.qgs), which when executed is automatically loaded with qgis.bat, there's another .qgs file which appears in the same directory of the original project file, although this one is not loaded with the qgis.bat file:    This is just out of curiosity but is the latter designed to be a backup of the original .qgs file? Pluralizing Noun Phrase? Prove that simultaneously diagonalizable matrices commute Two $n\times n$ matrices $A, B$ are said to be simultaneously diagonalizable if there is a nonsingular matrix $S$ such that both $S^{-1}AS$ and $S^{-1}BS$ are diagonal matrices.      a) Show that simultaneously diagonalizable matrices commute: $AB = BA$.      b) Prove that the converse is valid, provided that one of the matrices has no multiple eigenvalues. Is every pair of commuting matrices simultaneously diagonalizable?   My attempt:  a) Let $M=S^{-1}AS$ and $P=S^{-1}BS$, then it follows that $A= S^{-1}MS$ and $B=S^{-1}PS$. Thus $AB =S^{-1}MSS^{-1}PS = S^{-1}MPS = S^{-1}PMS$ (is it wrong that I switched MP to PM?) $=S^{-1}PSS^{-1}MS=BA$.   b) How can I do this? Suppose $n$ is an even positive integer and $H$ is a subgroup of $\mathbb Z/n \mathbb Z$. Prove that either every element of $H$ is... June 13th 2017 Microsoft blocked handling HTML markup in SharePoint calculated fields - how to get the same functionality back On June 13th 2017 all SharePoint calculated columns with HTML markup stopped working.   Basically the fields now render text (regardless of setting the data type to number). The gist of the notice from Microsoft () is:     In Microsoft SharePoint lists and libraries, calculated fields that   are running in the classic UI mode can be used to display results   based on Excel-like formulas. This is a long standing capability, and   is documented in Calculate data in lists or libraries.      Some users have added HTML markup or script elements to calculated   fields. This is an undocumented use of the feature, and we will begin   blocking execution of custom markup in calculated fields in SharePoint   Online from June 13, 2017 onwards. We are also providing this as a   configurable option for on-premises in SharePoint Server 2016 and   SharePoint Server 2013 via the June 2017 and subsequent Public   Updates.   As we don't have on premise SharePoint (online), we have to find an immediate work around, given that this impacts our processes and thus, business.   Is anyone aware of third party applications that will allow for HTML, script markup (that works with SP online)? Say an airplane flies at Mach 1. The doppler effect causes the front of the sound emitted by the plane to reach infinite frequency:    $f = \left ( \frac {343+0}{343-343} \right ) f_0 = ∞$  If the plane suddenly stopped, and there was an observer in front of the sound waves to receive the sound, what would the bunched up waves sound like to the observer? Would they cancel each other out and cause no sound? Why doesn't a commutator cause the rotation to reverse periodically or stop? I understand the field magnets attracting/repelling the armature/coil so that it turns one half-turn and then, because the commutator is turned, its contact with the brushes has switched sides, and the current goes in the opposite direction, reversing the electromagnetic polarity. Then, because the polarity is swapped, it attracts/repels to complete the second half-turn. The thing is, isn't it a bit of a gamble that it will turn in the same direction? Couldn't the it just be pulled/pushed back, more or less undoing the half-turn?  I'm also a bit confused how the rotation doesn't just stop once the commutator is oriented so that the brushes are contacting both sides of the commutator. In other words, there's a brief period just as the commutator switches the current directions where each both the brushes are in contact with both sides of the commutator where the current is neutralized. Shouldn't this stop the motor?    For reference, I'm just talking about a simple DC motor. Three-columns text with figures of 2\columnwidth How to install wps office via terminal? It's pretty complicated and sometimes the system freezes when I try to download and install wps office. I think it is much more convenient to use the terminal. But I never used installed WPS Office from the command line. That would be great if I could update it using software manager or terminal. Third party deb files are from separate locations. I specifically want to know about WPS Microsoft Office alternative for Windows? Is there something similar to Office for Windows but free? I am student living on a budget, Office is not an option at the moment. Unknown Additional Driver: Processor microcode firmware for Intel CPUs for intel-microcode After upgrading to 15.04, I have one additional driver (it did not appear in 14.10). What is the purpose of this driver and should I enable it? Excluding System admin from this validation rule I have the following validation rule ;  OR(      AND(         Upper(MailingCountry) &lt;&gt; 'UK',             NOT(ISBLANK(TEXT(UK_Email_Consent__c)))     ),      AND(        Upper(MailingCountry) = 'UK',          ISBLANK(TEXT(UK_Email_Consent__c))     ) )   I know to exclude system admins I need to include the following line   $Profile.Name &lt;&gt; "System Administrator"   In the validation rule above where do I add profile &lt;> system admin   Looking forward to your help   many thanks Using ReplaceAll on SparseArray Some icons are correct, and some are whack. Turns out it's not just the hot questions list, but the whole icon set. How to create Motion Trail in Cycles I want to create a motion trail effect for a sword like known in games look at that example if you have an solution that looks not as fancy as in the picture don't mind to post it. I'll accept anything useful. Struct padding in C++ A closed subset of an algebraic group which contains $e$ and is closed under taking products is a subgroup of $G$ A closed subset of an algebraic group which contains $e$ and is closed under taking products is a subgroup of $G$.   Denote this set as $X$. If the condition of $X$ being closed is dropped, this statement does not hold. The set of nonzero integers in $\mathbb{G}_m$ over $\mathbb{C}$ is a counterexample.  It suffice to prove that for any $x \in X$, $x^{-1}X = X$. As $X$ is closed under taking products, it is clear that $X \subseteq x^{-1}X$. In order to prove the inverse inclusion, the closedness of $X$ (under Zariski topology) must be used.   Let $\phi: G \rightarrow G, y \mapsto x^{-1}y$ is a homoemorphism of $G$ as an algebraic variety. So $x^{-1}X = \phi(X)$ is a closed subset of $G$ containing $X$. But Why are they equal?  Thanks very much. State-of-the-art algorithms for the training of neural networks with GRU or LSTM units I recently read a lot about neural networks using GRU or LSTM units. There are many easy to use frameworks like tensorflow that do not even require high knowledge about programming. Unfortunately, I never really found good information on how the training of those networks work. Simple backpropagation might probably not work for gated recurrent networks or is just too inefficient for networks with such a high number of variables to learn.  So my question is:  What are the state-of-the-art algorithms used for the initialization and training of neural networks with GRU or LSTM units? I am not looking for frameworks to use, but for initialization and update equations for the internal parameters.