Blinking purple screen New installation Ubuntu 20.04
Ubuntu 18.10 Cosmic not starting GNOME session on bootup
I have created Gantt chart in lightning table to show bars based on task start date and end date  using Aura, also the completion rate as shown below, I need to show the dependencies between the tasks (shown in red color in screenshot) .    these are the different types of dependencies we can have, any idea how this dependencies can be created in lightning?    In aura we have "lightning:progressBar" to show the progress bar, Do we have any such thing to create this dependencies directly? this is a dynamic table if we try to create this dependencies  line by line, its difficult bcoz we are not sure about the position of next bar, I am not looking for code to implement this, Just some thoughts to discuss on the solution, what approach can be taken. Count days between two dates, excluding weekends (MySQL only) \overbrace and \underbrace with square bracket Submitting a form by pressing enter without a submit button Prevent mail being marked as spam This is a  about avoiding outgoing mail being classified as spam.   Also related:                    I'm wondering how to prevent my emails from my site being marked as spam? I'm using sendmail.  I'm trying to send emails through my ruby-on-rails application. The mails are all written in swedish (if that does make a difference?). I don't know why they keep getting marked as spam.  Are there any things that I can do to minimize the risk? function customization_form_user_register_form_alter(&amp;$form, &amp;$form_state, $form_id) {  $form['account']['pass']['#attributes']['placeholder'] = t('Password'); }   I am trying to set placeholder on password field in registration form.  I seted placeholder on username and email, but on password field won't work...  Any help? Thank you! Why does my Task Manager window outline keep disappearing? Possible Duplicate:          I'm not sure what the proper term for the window outline is (chrome, I think?), but it keeps disappearing.    As you can see, theres no File->Exit or buttons that allow me to minimize or close this dialog. So instead it stays on top of everything else (unless I 'Switch To' another window). There is also no Processes tab or anything.  Since you cant right click the toolbar or bring up another instance of Task Manager, the only way to actually kill this dialog seems to be restarting. However the next time I bring up Task Manager, it will still refuse to go away.  Anyone know whats going on? I'm running 32-bit Vista SP1. Relationship between Binomial and Beta distributions I'm more of a programmer than a statistician, so I hope this question isn't too naive.  It happens in sampling program executions at random times. If I take N=10 random-time samples of the program's state, I could see function Foo being executed on, for example, I=3 of those samples. I'm interested in what that tells me about the actual fraction of time F that Foo is in execution.  I understand that I is binomially distributed with mean F*N. I also know that, given I and N, F follows a beta distribution. In fact I've verified by program the relationship between those two distributions, which is  cdfBeta(I, N-I+1, F) + cdfBinomial(N, F, I-1) = 1   The problem is I don't have an intuitive feel for the relationship. I can't "picture" why it works.  EDIT: All the answers were challenging, especially @whuber's, which I still need to grok, but bringing in order statistics was very helpful. Nevertheless I've realized I should have asked a more basic question: Given I and N, what is the distribution for F? Everyone has pointed out that it's Beta, which I knew. I finally figured out from Wikipedia () that it appears to be Beta(I+1, N-I+1). After exploring it with a program, it appears to be the right answer. So, I would like to know if I'm wrong. And, I'm still confused about the relationship between the two cdfs shown above, why they sum to 1, and if they even have anything to do with what I really wanted to know. Add Windows 10 to GRUB OS list My international conference in Europe this May has been canceled due to the COVID-19. I have a ticket, purchased from TAP air Portugal, from Toronto, Canada to Lisbon. Because it is a non-refundable fare, they don't want to give a refund.  They won't allow me to reschedule later than May 31 of this year. This won't be useful for me.  What options do I have? I'd prefer to get a full refund.  (I am a US citizen if it matters)  Note: They offered to refund just the taxes, which is about 10% of the value. That's not horrible, but I'd rather have the whole thing returned. A switch that is only ON if the reference voltage is matched -+ 0.1 volts Im a beginnerish will electronic and im looking for a switch that is only ON if the reference voltage is matched -+ 0.25 volts. So if i have a reference of 2.7v to match and i feed the switch a 2.75v the switch would be ON. But if i feed it  2.5v or 2.85v the switch would is OFF.   This might be a simple google search, but i am lacking the correct terminology. What does "user was removed" mean and why did my reputation change because of it? Message appearing when a user was removed.     It seems I lost 1765 reputation points on Stack Overflow yesterday. The reason given in my history is "removed", with the description of "User was removed ()". I don't understand what that means. What caused this? Count where any 3 columns have values (not null) I want to run a script to simply change the current working directory:  #!/bin/bash cd web/www/project   But, after I run it, the current pwd remains unchanged! How can I do that? Is exon order always preserved in splicing? Are there any cases in which the splicing machinery constructs an mRNA in which the exons are not in the 5' -> 3' genomic order? I'm interested any such cases, whether they involve constitutive or alternative splicing. For example: $$7x \equiv 1 \pmod{31} $$ In this example, the modular inverse of $7$ with respect to $31$ is $9$. How can we find out that $9$? What are the steps that I need to do? Update If I have a general modulo equation: $$5x + 1 \equiv 2 \pmod{6}$$ What is the fastest way to solve it? My initial thought was: $$5x + 1 \equiv 2 \pmod{6}$$ $$\Leftrightarrow 5x + 1 - 1\equiv 2 - 1 \pmod{6}$$ $$\Leftrightarrow 5x \equiv 1 \pmod{6}$$ Then solve for the inverse of $5$ modulo 6. Is it a right approach? Thanks. Is there any way to get a hat wider than widehat?  Why doesn't  \widehat{abcdefghijklmnopqrstuvwxyz}   really go over all of it? How to cross-reference items in description lists? Every now and then I use the description list environment  \begin{description} \item[foo]  foo is good \item[bar]  bar is bad \end{description}   to create lists with non-numerical labels. Unfortunately the description list does not support the label-reference pair as normal latex: i.e. if I write  \begin{description} \item[foo] \label{foo} foo is good .... \end{description} .... For good things (see, for example \ref{foo})...    the reference does not point to the item in the list. Instead it points to the closest environment that supports labeling (usually the subsection). So instead of showing the text foo (in boldface), it shows something like 2.2.1 (the subsection corresponding to where the description environment is sitting).  My question: is there a way or a package which allows references to description list items? My current work-around is to just type the text myself in the spot (since I named it myself, and it is not numbered, the formatting is unlikely to change the label =). But one of the good things about the label/reference pairs in latex is the implementation in pdflatex that allows in PDF hyperlinks between references and the objects referred to, this I cannot replicate myself.   Edit: let me rephrase my question. The primary goal is not to display \ref to something other than what LaTeX thinks the \label is. There are many ways to deal with it, some of which outlined in Michael Underwood's helpful answer below. What I am looking at is whether there exists an implementation of a list environment which is like the built-in description environment in that the displayed "title" for the list item is completely customized, while having support for \labels. (The built-in description environment does not support \labels, whereas the built-in enumerate environment does not support customized "title"s.) The enumitem package adds some customizability to the environments, but as far as I can tell it doesn't support exactly what I want. ‘[...][Harry'll] be famous – a legend – I wouldn’t be surprised if today was known as Harry Potter Day in future – there will be books written about Harry – every child in our world will know his name!’   ‘Exactly,’ said Dumbledore, looking very seriously over the top of his half-moon glasses. ‘It would be enough to turn any boy’s head. Famous before he can walk and talk! Famous for something he won’t even remember! Can’t you see how much better off he’ll be, growing up away from all that until he’s ready to take it?’   Philosopher's Stone - pages 15 - 16 - chapter one, The Boy Who Lived   Did Dumbledore choose correctly?  Knowing what we do about Harry and his canon character attributes (And faults, too!), was Harry really better off enduring eleven years of physical and emotional abuse at the hands of the Dursleys than eleven years of celebrity and fame in the wizarding world? I'm sure we've all read about child celebrities who have done well handling fame, and some who have not fared so gracefully.   Would Harry have endured celebrity as stoically as he did the Dursleys' abuse? Did Dumbledore make the right choice in leaving Harry with the Dursleys instead of letting him grow up in the wizarding world?  Was Harry really better off?  ETA: I'm looking for an answer grounded in Harry Potter canon and written in the spirit of canon. Please do not pair Harry with Elle Fanning or opine that he's secretly an American ;) Thanks! Make \cite{my reference} show name and year I am trying to figure out how to make author's name and year show up every time I make a reference.  For example:  my_bibtex.bib has this entry:  @article{Franklin1999,  author = {Franklin Allen and Risto Karjalainen}, title = {Using genetic algorithms to find technical trading rules}, year = {1999}, volume = {51}, pages = {245-271}, journal = {Journal of Financial Economics}  }   If in my_paper.tex I use this line:  Important result has been found by \cite{Franklin1999}   My output looks like:  Important result has been found by [1]   But I want it too look like:  Important result has been found by Franklin 1999   I there a way to do it?  My bibliographystyle is set to plain  \bibliographystyle{plain}  \bibliography{my_bibtex}