How to recover from chown on all the files?
Filesystem owner changed by mistake
How can I build XML in C#? How can I generate valid XML in C#? Understanding integrals double meaning I would like to understand why the integrals represent 2 things:   If we only do an integral without bounds on $f(x)$, the integral gives us the function $F(x)$ that, when differentiated, gives us the original function $f(x)$. If we do an integral with bounds $[a,b]$ on $f(x)$, it gives us the area under $f(x)$ by evaluating the difference $F(b) - F(a)$.   Why does $F(x)$ represent the area under $f(x)$ as well as the first point? Before running a ridge regression model, do I need to preform variable selection? I am currently constructing a model that uses last year's departmental information to predict employee churn for the current year.  I have 55 features and 318 departments in my data set.  A good portion of my independent variables are correlated, and because of this, I believe that performing a ridge regression on my data will lead to optimal predictions when I bring the model into production.  I have studied ridge regression and understand that the lambda coefficient computed for a given predictor can minimize the effect that predictor has on the model to next to nothing.  Does this mean that performing a ridge regression means I don't have to bother with variable selection? If I do need to perform a variable selection technique, would implementing a stepwise regression and then using those selected variables in my ridge regression be a valid approach at variable selection? I already posted this question on stack exchange but was informed that stack exchange was the better platform to ask statistical questions.  I am sorry for the confusion. The  (click on your number of helpful flags in your profile) is cool, however some posts have a gray background, some don't. What does it mean?  example: How do I say what is the current UTC in eastern zone Prepositional Phrase - confused - at or in Let's meet in the morning  or at the morning.  in the afternoon or at the afternoon.  in the night or at the night.  in the park or at the park.  working in the background or at the background. This might be a duplicate of  but that question is 5 years old and unanswered.  When I'm in drive.google.com and I open a G Suite file (either double-click or select &amp; press enter) in Firefox it opens in a new window whereas in Chrome it opens in a new tab.   Why do they do that? Is this a browser-specific quirk or a Google setting (that I haven't found)? Is there a way to control the behavior? I'd like them both to open in tabs, but presumably the same answer would be relevant in the opposite direction too. ''will'' or ''going to'' What can interfere with glossaries to prevent printing? I have the strange experience that from the combination      \glossarystyle{altlisthypergroup}     \clearpage     Printing acronyms     \printglossary[type=acronym]   only the debug message is printed, the glossaries not.  Even, the \printglossary leads to hanging. At the same time, in the text commands like \gls{} work as expected.  Any advice, what other package can interfere with glossaries? (It is part of a bigger project, the MWE works as expected.)    I changed to command line version from TeXstudio. I receive the output  makeglossaries DSc2 makeglossaries version 2.12 (2014-01-20) added glossary type 'main' (glg,gls,glo) added glossary type 'acronym' (alg,acr,acn) makeindex  -s "DSc2.ist" -t "DSc2.alg" -o "DSc2.acr" "DSc2.acn" This is makeindex, version 2.15 [TeX Live 2013] (kpathsea + Thai support). Scanning style file ./DSc2.ist.............................done (29 attributes redefined, 0 ignored). Scanning input file DSc2.acn....done (9 entries accepted, 0 rejected). Sorting entries....done (36 comparisons). Generating output file DSc2.acr....done (15 lines written, 0 warnings). Output written in DSc2.acr. Transcript written in DSc2.alg. Warning: File 'DSc2.glo' is empty. Have you used any entries defined in glossary 'main'? Remember to use package option 'nomain' if you don't want to use the main glossary.   What I do not understand, that if there are entries accepted, and sorted, why do I receive the warning about empty .glo file? And also, why the pdflatex hangs if I try to continue with using pdflatex again? Do Triggered effects stack? Comparing two Lists and returning the distinct values and the differences Eclipse returns error message "Java was started but returned exit code = 1" What are the strategies for getting feedback on articles? As an academic, one has to publish. Often, an article is drafted, and you need feedback of a colleague.  I see that quite often some perspective articles are often written by long-term collaborating pairs of authors.  What are some strategies people use to get feedback on their articles  (outside of immediate boss; and in the case that none of the friends in the field of work in the specific domain of the article, and one needs specific (not general) feedback)?   How do you approach a colleague to simply read your article. Or do you just mention it at a conference to the most suitable colleague - would you like to read an article and give me feedback? How do handle the co-authorship or acknowledgement? Do you establish the limits at the "approach time"?  What are some strategies to establish a "publishing" duos (buddies). Static posts page with home.php For my website, I am using a static home page page Home (template front-page.php) and for posts- page News (template home.php)  I need to show all the post titles and exceprts on that page News (templ. home.php), but also show the original title and the_content from that page News itself.  This code below while statement shows all the posts, which is good, but the top the_title also shows the title from the first post, not from the News page itself.  How to achieve what I need?  &lt;?php get_header(); ?&gt;      &lt;?php     the_title();           the_content();     ?&gt;  &lt;?php if(have_posts()) while(have_posts()) : the_post(); ?&gt;          &lt;?php         the_title();         ?&gt;          &lt;?php         the_content();         ?&gt;      &lt;?php     endwhile;     ?&gt;    &lt;?php get_footer(); ?&gt; I am working in Illustrator (15.0.2 (CS5) or 16.0.0 (CS6)) and when I try to move objects small distances, they snap to the nearest two pixels on some invisible grid. I can't find anything in the preferences. Here are some screen shots: I have a "term reference" field, in a form that uses an auto-complete widget. I want to limit user input to terms in the vocabulary only, and output a message when a user tries to enter a non existing term.  I found the  module. However this does not work with forms that contain a field collection or a field group.  There is also a contributed patch . But I was wondering whether there was a simpler/cleaner solution like a module or maybe I missed an already existing way of doing it with latest drupal and taxonomy versions. Is it posible to add iframe directly in lightning components? Is it possible to add iframe directly in a lightning component as below to visible in community sites ?  &lt;aura:component implements="forceCommunity:availableForAllPageTypes" access="global" &gt;     &lt;iframe width="800" height="600" style="border: 1px solid" src="---" /&gt; &lt;/aura:component&gt; I am not from EU. I have Spanish partner and we live in Spain and, because of our official relationship, I have a Spanish family resident permit. We are going to travel to the UK together for tourism. I am confused whether I need an EEA family permit or not.  I will not live there and I'm going to travel with my partner. I was told that I don't need a visa, that showing our civil union document will be sufficent. Is this correct, or do I need a visa to enter the UK?    Thank you so much for your answer. Let me give you more detail.  I hold Turkish citizenship.  My resident card exactly says that Residence Card of a Family Member of a Union Citizen " tarjeta de familiar de la union.   my case is like For example, a non-EEA spouse of a German national living in Germany will usually hold a residence permit issued under German domestic law. Therefore, a United Kingdom EEA family permit is required for travel and entry to the UK , therefore I should consider that I need to EEA Family Permit even if for touristic trip with my partner. If a batsman hits the ball inside the ground and begins running between the wickets and now the ball is thrown back to the Fielder/Bowler/WK(FBWK)    If the FBWK catches the ball in one hand and hits the stumps with other hand before the batsman gets reached, is this a run out? If the FBWK catches the ball in hands and hits the stumps with leg or any other part of his body before the batsman gets reached, is this a run out?   This scenario can occur, when the ball was thrown far away from stumps. Some class features, monster traits, and feats allow you to take a −5 to your attack roll in order to gain a +10 to your damage roll. At first glance this looks really good, but when will it deal more damage than not using it on average?  For instance if you have a total attack bonus of +8 and you deal 1d12 damage. You have to roll a 7 to hit an AC of 15. If you take the −5 that makes it where you have to roll a 12. That's going to reduce your average damage by a lot.