How Google search engine's algorithm determines the desirability of a website
What are the best ways to improve a site's position in Google?
How can I simplify the use of flags with Views Bulk Operations? I have an administrative display (made with views) that lists content that is pending approval.  In the case of my site, approval means flagging with the approval_for_pub flag (which triggers a custom rule).   allows nodes to be flagged/unflagged all at once by clicking a handy button:    However, upon clicking this button, by default it shows all possible flags and the flag/unflag option:    This is a problem on my site because some of the people responsible for approval get confused by the names of the flags and select the wrong option.  So, what I would like to do is create a VBO option that, when the button is pressed, automatically flags all applicable content with the approval_for_pub flag.  How can I approach this?  It seems like a small detail, but this step happens several times a day, so the chance of making a mistake is quite high. Centrifugal force acting on ring Take for example the case of a rod rotating about an axis passing through its centre of mass and perpendicular to it. It has a ring hung from one of its sides. The rotation of the rod causes the ring to move out wards and ultimately fall off the rod.   I asked my teacher what causes the ring to move out wards and he said the centrifugal force acting in the frame of reference of the ring causes motion. What exactly is the ring reference frame? Is it a rotating frame? How would u visualize motion in this frame of reference? People seem to believe that one's consciousness is a "different" consciousness than that of others, but the "same" consciousness as the one that has been in one's body in the past and the one that will be in one's body in the future. How likely is this to be true and why?   Also, I have almost no knowledge about neuroscience, so please refrain from using neuroscience jargon if feasible. Which locations are traditionally Santa's home - i.e. where can you visit Santa Claus year-round? Obviously around this time of the year, Santa and his minions will be out and about, finding out who is naughty and nice, and delivering presents.  However, the rest of the year he's back at his home.  Where is that generally considered to be visitable?  Yes, in some traditions it's the 'North Pole', but I know at least one other country (Finland) has Rovaniemi as his home. Why am I still getting a password prompt with ssh with public key authentication? Azure DNS does not lookup SPF policies for certain domains How can I find all files I can not write to?  Would be good if it takes standard permissions and acls into account.  Is there an "easy" way or do I have to parse the permissions myself? How can I calculate the number of work days between two dates in SQL Server?   Monday to Friday and it must be T-SQL. Python: using a recursive algorithm as a generator I want to delete all *.o files in a directory and its sub-directories. However, I get an error: sashoalm@aspire:~/.Workspace.OLD$ rm -r *.o rm: cannot remove `*.o': No such file or directory  On the other hand, rm *.o works, but it's not recursive. How do I create a Windows 7 USB installer with preinstalled software? I was wondering if it was possible to make a bootlable image of a Windows 7 Pro OEM Installation CD that I have and put it on an USB stick for faster/easier installation. I am asking because we have a couple of PC´s where I´d have to install the OS using the same key (MAK).  Also is it possible to kind of populate that image with software that would have to be installed anyways on all machines (like Chrome, Outlook, etc)?  It would be really helpful to just install a Windows 7 image with customized software already installed. I would just make an image of an OS and use that, but the hardware of the machines differ. I have a process I can't kill with kill -9 &lt;pid&gt;. What's the problem in such a case, especially since I am the owner of that process. I thought nothing could evade that kill option. Tensor product in dual-space I am a bid confused regarding the notation for tensor products when going into dual-space  If $\left| \Psi \rangle \right. = \left| A \rangle \right. \left| B \rangle \right.$ is $ \left. \langle \Psi \right| = \left. \langle A \right| \left. \langle B \right|$ or $\left. \langle B  \right| \left. \langle A \right|$?  My guess is the last choice, since operators should act on   $\left| 0 \rangle \right. = \left( \begin{matrix}   1 \\   0  \end{matrix} \right) $  $\left| 1 \rangle \right. = \left( \begin{matrix}   0 \\   1  \end{matrix} \right) $  so  $\left| 01 \rangle \right. = \left| 0 \rangle \right. \left| 1 \rangle \right. = \left( \begin{matrix}   0 \\   1 \\   0 \\   0  \end{matrix} \right) $  But then, for me, it should be  $\left( \begin{matrix}   0 &amp; 1 &amp; 0 &amp; 0  \end{matrix} \right) = \left \langle 10 \right|$ But this is not correct if i calculate the tensor product, since   $\left \langle 1 \right| \left \langle 0 \right| = \left( \begin{matrix}   0 &amp; 0 &amp; 1 &amp; 0  \end{matrix} \right)$  For instance, shoulden't it be  $\left| 01 \rangle \right. \left \langle 10 \right| = \left( \begin{matrix}   0 &amp; 0 &amp; 0 &amp; 0\\   0 &amp; 1 &amp; 0 &amp; 0\\   0 &amp; 0 &amp; 0 &amp; 0\\   0 &amp; 0 &amp; 0 &amp; 0\\  \end{matrix} \right) $ ?  I hope I have made my confusion clear I am using scikit learn  to build a Random Forest classifier.  I have heard that it might be possible to build a single decision tree from a Random  Forest. The suggestion  is that although the decision tree may not be as good a classifier as the Random Forest it may be better than the decision tree you would get by using the standard method.  However I haven't been able to find this method online. Does it exist?     My question is not about extracting one  of the decision trees from a Random Forest. It is asking about a method to construct a new decision tree from the whole Random Forest, perhaps by combining the trees in the Random Forest somehow. How to measure time taken by a function to execute I need to get execution time in milliseconds.  I originally asked this question back in 2008. The accepted answer then was to use  However, we can all agree now  that using the standard  API is more appropriate. I am therefore changing the accepted answer to this one. What is the difference between single-quoted and double-quoted strings in PHP? What exactly makes quantum computers faster than classical computers? Given the functional dependencies of a relation is there more then one way to normalize it? I was chatting with a friend after I saw his photos in Russia (Petersburg). He is a white British dude who has been to many, many, many countries. On the other hand, I am a pure Arab who looks like a typical Middle Easterner or North African, who has also been to many countries, but never to Russia or its neighbors.  Anyway, it seemed like he really liked Russia, so I told him it will be in my list. He told me "you do not belong".  At first, I wasn't sure what he did mean. He started explaining and told me stuff like "you will be hassled for no reason in some parts of the city" and "the police will stop you every few hundred meters asking for money". He made sure to make me believe that's all because I do not belong.  Can someone clarify this? Of course, some of this is hyperbole to help convey the point, but to what extent?  Note: The friend is . If you think the question is wrong, feel free to downvote him ;) We have given isosceles triangle $ABC$ with baseline $AB$. Point $M$ is midpoint of AB. Draw perpendicular line to side $AC$ through $M$ which intersects $AC$ in point $H$. Let $P$ be midpoint of $MH$. Show that lines $BH$ and $CP$ are perpendicular to each other.  I also have "hint": Construct height $BD$ to side $AC$ and look at the triangles $ABD$ and $MCH$.  Analytically there is no problem but I get stuck in geometrical approach to solution.