I am trying to figure out the best way to organize a Marketing Cloud instance. I want to get the best way to do so as the Multi-org is not an option (Data streams and Journey Builder do not work) and there is no other way to connect one BU to Salesforce production environment and another BU to sandbox environment.  The only way I can think about is to create a BU for testing, create testing data that replicates the data in the production BU and when everything is as expected, copy one by one all the contents, filters, emails, queries, automations... to the production. With emails, I could share them to the production environment so all the content resides in the test BU.  Any clue if this is the only way to maintain a test and production environments in Marketing Cloud or if there is another workaround?


How can I know English flight times from Manchester airport?

I claimed for a flight which was delayed for over three hours but the airline are saying that the delay was only 2 hours and 31 minutes. The flight was Jet2 LS863 from Manchester to Murcia in Spain due to depart at 15:15 on the 25th July 2015. We didn't actually leave the ground until after 18:30.


Why is the Trade Federation interested in Naboo?

Why was the Trade Federation so interested in Naboo? Why did they blocked Naboo especially since it's a small planet and apparently unimportant.


how to extract data with regex in python?

My data has this struture:  ID 12354 linea+b 3 ID 15687 linea+b 7 ID 26894 linea+b 10   This is my proposition: r'ID\s+([0-9]+)\s+linea+b\s+([0-9]+)\s+' The problem is with linea+b  where python does not accept + as a string, it analyzes it as a metacharacter.


Can Gmail automatically base "send from" address on the "to" address?

In short: In Gmail, is there a way to let the "send from" address change automatically depending on which of my accounts it was sent to?   In long:  I recently joined a team (of developers) and they provided me with an email address on their domain (for if I have business with a client or something).    Anything sent to me@team.com is forwarded by the team.com mail server I'm using Gmails "send mail as" functionality to send email through smtp.team.com. I receive emails and I can send them, so that works I have my default "send as" address setup as me@Gmail.com, which I would like to keep since I send 90% of my mail through there.   Now I'm wondering how to do the following, if at all possible:   when I receive an email at me@team.com (as opposed to me@Gmail.com), and I reply to it, my "send as" address will change automatically to me@team.com I can do it manually, but I know I'm going to forget sooner or later, confusing the hell out of people since the team lets me use a pseudonym.   I hope my question makes sense, and I'm sure it's easily answered by a "no, not possible" or "yes, option X in tab Y".


Recovering an accidentally deleted  folder in OSX - no Time Machine or backup available

I am a longtime Windows user, recently switched to Mac. I replaced folder with another folder (they had the same name) thinking that OS X will merge the contents of both folders. But OS X deleted the original folder and replaced it with the new one. Windows merges both the folders (I do this often in Windows). I have now lost hundreds of files. I haven't enabled Time Machine. I've tried using Finder's Undo, but that doesn't work.  Currently, I am trying to recover my data using . It shows estimated time as 7 hours, 31 minutes. Does anyone know any free data recovery software that's faster and more powerful?


An example of a lattice that's not totally ordered

The following is an excerpt from my textbook:        A lattice need not be a totally ordered set.  Consider the partially ordered set $(ω,D)$ where D is the relation on $ω$ defined by $x D y$ iff $x | y$.  Then $(ω,D)$ is a lattice.  For all $x,y \in ω$, $inf${$x,y$} is the highest common factor of $x$ and $y$ and $sup${$x,y$} is the lowest common multiple of $x$ and $y$.  For instance, $inf${$4,6$}$=2$ and $sup${$4,6$}$=12$.  However, D is not a total order relation.      I'm confused about $inf${$4,6$}$=2$.  In the context of the example, my understanding is that the greatest lower bound of the set {$4,6$} is some element of $ω$ such that $ω \le 4,6$.  Wouldn't $4$ fit that definition and not 2?


Why is the probability that a continuous random variable takes any one specific value equal to 0?

What would the intuitive explanation be?  Would it be because there are infinately many values and so the probability of any specific value is infinitely small hence we say 'close enough' to 0?


So I'm in a tiny dorm room and I normally point my fan blowing outside the window to cool my room off.  I've been in some debates on blowing air out or in is more effective, so I'm hoping to get some empirical data to back up my claim. Things I have   A Heater with only low, medium, high settings. The Fan. I do not have a thermometer.   So the best I could think of was melting ice cubes.  I don't care about the exact temperature, just which method is more effective. I've outline the basis of my experiment:  Shut the windows and turn the heat on high, 15 minutes  Open the windows, turn off the heat, turn on the fan on high, 15 minutes  Leave $n$ ice cubes out and take the average of how long it takes them to melt.  All the ice cubes are from the same tray.  Can anyone devise a better experiment with no tools...


How can we tell which direction sound is coming from?

Pretty self descriptive, without being able to view the source of the noise how can we tell the difference between a sound in front of us and a sound behind us if pitch, volume and distance are all the same.   Also assume that it is not biased to one side more than the other, e.g its not to your left or right but directly in front or behind.   I'm interested in knowing if it is a part of the ear that makes this distinction, or a function of the brain.


I have a database of northings and eastings of boundary markers of land parcels that are in a form that I cannot pin on any format. I would like to perform some conversions on them so that they can be used on Google Earth, Maps, Waze etc. Example land parcel boundary markers:  23463.817 E, -54819.146 N  23449.900 E, -54808.635 N  23445.504 E, -54841.976 N  23435.597 E, -54834.499 N  23434.750 E, -54828.132 N   One of the marker is pointing "close" to 3.184487, 101.718079 on Google Earth.   I'm having trouble determining what format are these because it seems the values are way out of range for many known formats. I have no access to the people providing this information at the moment. Can anyone help me figure this out?   The area of concern is in Kuala Lumpur, West Malaysia.


Let me start with an image..    Now, is it possible to center only the table and let the flowchart on the top corner?  Here is a MWE:  \documentclass[12pt,twoside]{beamer} \usepackage[spanish,es-noquoting]{babel} \usepackage[utf8]{inputenc}  \usepackage[T1]{fontenc}  \usepackage{multimedia} \usepackage{forest} \usepackage{float} \usepackage{booktabs} %\setbeamercovered{transparent} \usepackage[flushleft]{threeparttable} \usepackage{multicol} \setbeamertemplate{frametitle}[default][center] \setbeamersize{text margin left=2em,text margin right=2em} \begin{document} \begin{frame}[shrink=25]{Resultados - glioxal} \begin{multicols}{2} \vspace{-0.5cm}\centering{ \begin{threeparttable} \caption{Reacción problema}\label{table:reaccion_central} \begin{tabular}{lcc} \toprule     \multicolumn{1}{c}{Compuesto}  & \multicolumn{2}{c}{RM1}                          \\ \midrule                                      & $\Delta G^\circ_{\text{COSMO}}$ &     $\Delta G^\circ_{\text{SS-COSMO}}$ \\ \cmidrule(lr){2-3} CC$_{\text{ref}}$                  &      -                   &    -                         \\  cis dihidro-dihidroxi                & I need                     &  to center                        \\  trans dihidro-dihidroxi              &  only                    & this table                             \\  &  &  \\  \end{tabular} \end{threeparttable} }\medbreak  \scalebox{0.6}{ \begin{forest}   for tree={     rounded corners, draw, align=center, top color=white, bottom     color=blue!20,     edge+=->,     l sep'+=10pt,   },     [This      [is a forest]      [flow        [chart!]      ]    ]  \end{forest} } \end{multicols} \end{frame} \end{document}


I read that a pair of entangled quantum particles can spontaneously pop into existence for a brief moment and especially near to the event horizon whereby one of the entangled quantum particle passes through while the other escape, and the quantum particle that falls in is always carry negative energy while the escapee always have positive energy becoming a real particle. Does it means that no matter which one of the entangled pair falls into the black hole it always carry negative energy provided the other pair manage to escape and gets promoted to real particle.  So far not good... a pair of virtual matter-antimatter particles are entangled and cannot be tell apart from each other, when one of the pair happens to fall into the black hole we immediately assume it carries negative energy! Just because the other particle becomes real particle, is that the reason?


The equivalent of SQLServer function SCOPE_IDENTITY() in mySQL?

What is the equivalent of SQLServer function  in mySQL?


Wikipedia tells me that      Reference is a simple reference datatype that is less powerful but safer than the pointer type inherited from C   I am learning C++ and I came across the function vector::front().  In the documentation it says the fuction     Returns a reference to the first element in the vector.   However, as shown in the code below, the return value is treated as not the reference but the element itself.  vector<int> my_vector(1); // initialising a vector my_vector.push_back(10); // inserting 10 int number = my_vector.front() + 1; // number = 11   If my_vector.front() is a reference to the first element, shouldn't it be dereferenced with (*) in order to access the value?   Seeing that   *my_vector.begin() == my_vector.front() == 10  and I can do arithmetics to the iterator, should I think of iterators as something similar to pointers in C, and think of reference as a value?


Why can't one create a folder/file named "CON"?

Before you start complaining about me not googling the answer - I did Google search it.  But everything I could find was that CON, COM1, AUX, etc are restricted because they have special meaning - for example, "CON:" mens console. And therefore writing to CON: will result in the text popping up in the console (checked that myself - typing echo "asdf" > CON: indeed resulted in "asdf" showing up).  For me, this still hardly answers the question. I mean, CON: should be something different that "C:\CON" or "C:\CON.txt", shouldn't it? As far as I know, any file or folder or driver on anything is being fully identified by the string containing it's full location (including the drive followed by a : sign at the beginning) and (optionally) it's type extenstion. Therefore I can't see how, for example, the existance of a file "C:\Documents and Settings\Someone\Desktop\c.docx" could result in any ambiguity, as it should be obvious that this Word document is not the C: drive. And similary I can't see how the existance of "C:\Documents and Settings\Someone\Desktop\con.docx" could result in Windows not knowing whether this is a Word document or the console.  Could someone explain this to me? Thanks in advance.


Counterexamples to Brouwer's fixed point theorem for the closed unit ball in Banach space

Brouwer fixed point theorem states that for any compact convex set $X$, a continuous mapping from $X$ to $X$ has at least one fixed point.  Brouwer fixed point theorem applies in particular on the close unit ball of a finite dimensional space.  Do you have counterexample(s) where Brouwer fixed point theorem does not hold on the close unit ball of a Banach space (of infinite dimension)?  Note: this question is a refinement of  which was put on hold.


Is there a way, after a library is linked to move that library to another location? I have a library that is in a different folder than my scene file and for the sake of more easily sending it to a renderfarm I want to move it all into one folder. Is there a way to edit link paths?


Added new redirected domain with lots of visitors bouncing - is that bad for us?

We're a very niche domain marketplace, which has a few hundred domain names for sale, and most all of them are redirected to our site. Most get a few clicks a day, as they are non-keyword (generic terms)  We've just gotten a big domain name on board, and it's gotten about 1000 visitors for the day -- MORE THAN our actual site traffic gets without it -- most of all which are bounces. We plan to also have more names like this soon, whereas we'll receive tons of redirect traffic.  Is this bouncing traffic going to negatively affect our ranking or our SEO?  Or is the added number of visitors of greater weight than the increased bounce rate?


How do I cd into a directory in the home folder?

How do I change directories to downloads, from the home folder, in the latest version Ubuntu 12.10? I tried cd /downloads, but it gave an error saying that there is no such directory.


Show intersection of two algebras are not a $\sigma$-algebra

I have the following question:    $\textbf{Question}:$ Let $\mathcal{F}_1$ and $\mathcal{F}_2$ be two algebras. Is $\mathcal{F}_1 \cap \mathcal{F}_2$ a $\sigma$-algebra?  I believe the answer is no. I know the definition of an algebra and the definition of $\sigma$-algebra.    I'm assuming I need to show that the intersection of the finite unions of each algebra is finite, but then I get stuck trying to work out how to show it is not a $\sigma$-algebra.  All help is appreciated.  Many thanks, John


Our website was copied 100% and mirrored on a different domain

One of our websites was copied word for word all 400 pages by someone who used a special program to clone the site. We saw the program in the code.   This was done in early April and soon after that we lost a lot of rank in Google. We just discovered the copied site today. It is mirrorred 100%.   We did change the front page of our site since then to make some differences but since the Penguin update, we still have not recovered. We have also corrected the problems in Webmaster Tools. Will the mirrored site affect our Google rank to a severe degree or are there other issues that are affecting us? What can be done about that mirrored site?


Normal map baking - All clean blue (no color variation)

I'm trying to bake a normal map from a high poly mesh, and apply on a low poly mesh (in Unreal Engine 4). Bare with me as I'm new to Blender, and especially new to normal map baking with Blender.  I'm not sure how to accomplish this task. The guides I've seen and read, explain how to uv unwrap the low poly mesh -> select the high poly -> shift-select the low poly -> hit bake (normal -> "Selected Active").  For some reason, everything shows up completely blue (no color variation -> No elevation information), and I'm not sure how to accomplish the baking?  The UV of the low poly:    Normal Map:    Low poly VS. High poly:    Could anyone help me?  EDIT:  Of course I'm aligning the 2 meshes so Blender can read the elevation differences.


Reduce Javascript array of objects to just object

I have a javascript array of object like this let Object  = [    {"Form Factor": "2.5 inch"},    {"Capacity": "1 TB"},    {"Memory Components": "NAND 3"} ]  i want to reduce it to just an object like this resultObject = {   "Form Factor" : "2.5 Inch",   "Capacity": "1 TB",   "Memory Components" : "NAND 3" }


FFMPEG how to control number of i-frames in encoded video?

I want to re-encode a video using H264, and I want to control the number of i-frames contained in the re-encoded video. I've tried the following.  ffmpeg -i video.mp4 -y -c:v libx264 -crf 21 -sc_threshold 40 -c:a copy reencoded_video.mp4   This successfully re-encodes the video, but I can't affect the number of i-frames by adjusting the -crf and -sc_threshold values, as I have checked with ffprobe. Most of the time, the same set of i-frames are obtained regardless of the -crf and -sc_threshold values I set.  How do I control (to some extent) the number of i-frames in the re-encoded video? For example, how do I make every frame and i-frame? How do I re-encode it so that there is about 1 i-frame every 2 seconds?  EDIT  It seems that I just wasn't trying a big enough range for -sc_threshold; setting it to 9999 solved the problem. I still can't find the documentation for a valid range of -sc_threshold though, could anyone point me to an official documentation that describes its valid range?


Can a body posses pure rolling in smooth inclined plane.In smooth  inclined plane the centre of mass of body is accelerating.So to maintain the pure rolling there should be angular acceleration.But no one provides the torque because the only forces Gravity and Normal reaction passes through centre.


Ubuntu 14.04 running slow on Dell Vostro 1440

I am using a Dell Vostro 1440, with Intel(R) Celeron(R) CPU P4600 processor size: 1995MHz,capacity: 1995MHz, 2GB RAM.  I have installed Ubuntu 14.04 LTS 64-bit. It is running too slow. I want to know whether I am using the right OS for my system specification, and if so, how I can improve performance.


Why can't I have a non-integral static const member in a class?

I noticed C++ will not compile the following:  class No_Good {   static double const d = 1.0; };   However it will happily allow a variation where the double is changed to an int, unsigned, or any integral type:  class Happy_Times {   static unsigned const u = 1; };   My solution was to alter it to read:  class Now_Good {   static double d() { return 1.0; } };   and figure that the compiler will be smart enough to inline where necessary... but it left me curious.  Why would the C++ designer(s) allow me to static const an int or unsigned, but not a double?  Edit: I am using visual studio 7.1 (.net 2003) on Windows XP.  Edit2:  Question has been answered, but for completion, the error I was seeing:  error C2864: 'd' : only const static integral data members can be initialized inside a class or struct


Definition of Zero-truncated Poisson distribution

The definition of zero-truncated Poisson (ZTP) distribution is:   \begin{align} g(k;\lambda)= P(X = k | X > 0) &= \frac{f(k;\lambda)}{1-f(0;\lambda)}  \\[8pt]                                &= \frac{\lambda^ke^{-k}}{k!(1-e^{-\lambda})}  \\[8pt]                                &= \frac{\lambda^k}{(e^\lambda - 1)k!} \end{align}  The definition of conditional probability is:  $$ P(A|B)=\frac{P(A\cap B)}{P(B)} $$  Now, $A = f(k;\lambda)$ and $B = 1-f(0;\lambda)$, but how is $A\cap B = f(k;\lambda)$?  Source:


How to get part of html markup as a variable

I need to extract part of html markup:
   HOME   HOME   HOME   HOME   HOME
   JS    $(document).on('click', '.spant', function () {   var a = ... // - html of all spant before clicked, including clicked one; });   For example, if third spant is clicked, the result should be:  HOME HOME HOME   How can I do this ?


Does the Observant feat allow you to auto-succeed against illusions?

The Observant feat states:  You have a +5 bonus to your passive Wisdom (Perception) and passive Intelligence (Investigation) scores.  To my knowledge, nowhere else in the rules is there discussion regarding a passive Intelligence (Investigation) score. Furthermore, on D&D Beyond, the Passive Intelligence (Investigation) is included under the character's Senses akin to Darkvision or Blind Sight. Several illusion spells include language along the lines of:  Can use its action to (do something to see through the illusion) and must succeed on an Intelligence (Investigation) check against your spell save DC.  Does the creation of a Passive Intelligence (Investigation) by the feat constitute a scenario of specific beats general rule whereby any illusion that can be defeated by an investigation check automatically fails if the save DC is lower than the passive score created by the feat?


In Minecraft (java) I am making a server with my friend. I'd like to make it so that players can't grief the spawn. Is there any way to make the area indestructible?? I still want people to be able to mine n stuff, but im worried about the spawn getting messed up whether on purpose or not. Please help!!


I was Googling for some programming-related question and ended up on some Stack Overflow clone with the URL stack-overflow.ga. I noticed because I wasn't logged in. Is this a legitimate page? I'm guessing it's fake. Should I report it somewhere? If so, where?


How to make foreach() only iterate the first 3 entries?

I have a code that lists all 38 weather data using a foreach() from openweathermap.org (JSON). I would like to have only the next number of first x entries in foreach() to give xh forecast. Where x may be 3 or something that low.   Here is my code I have so far:  namespace ConsoleApp2 {     public class RootObject     {         public List<myWeather> list { get; set; }     }     public class myWeather     {         public Main  main { get; set; }         public Clouds clouds { get; set; }         public string dt_txt { get; set; }     }     public class Main      {         public float temp { get; set; }         public float humidity { get; set; }     }     public class Clouds     {         public float all { get; set; }     }     class Program     {         static void Main()         {             using (WebClient client = new WebClient())             {                  Console.WriteLine("ACCESSING jsonWeather ...");                 string jsonWeather = client.DownloadString("http://api.openweathermap.org/data/2.5/forecast?q=Auckland,NZ&APPID=45c3e583468bf450fc17026d6734507e");                 var myweather = JsonConvert.DeserializeObject<RootObject>(jsonWeather);                  string localtime = DateTime.Now.TimeOfDay.ToString();                   foreach (var json in myweather.list) /// how to limit the number of data to x coming out here?                 {                         Console.WriteLine(json.dt_txt);                         Console.WriteLine(json.clouds.all);                         Console.WriteLine(json.main.temp);                         Console.WriteLine(json.main.humidity);                 }                    Console.ReadLine();             }         }     } }   This is the output it generates (time is in UTC):  ACCESSING jsonWeather ... Time 2019-12-24 03:00:00 Coverage 7 20.7499938964844 50% Time 2019-12-24 06:00:00 Coverage 3 17.8300109863281 66% Time 2019-12-24 09:00:00 Coverage 0 12.9699951171875 89% Time 2019-12-24 12:00:00 Coverage 0 12.7700134277344 93% Time 2019-12-24 15:00:00 Coverage 21 13.4299865722656 94% Time 2019-12-24 18:00:00 Coverage 48 15.0500122070313 89% Time 2019-12-24 21:00:00 Coverage 81 19.4999938964844 66% Time 2019-12-25 00:00:00 Coverage 63 22.8300109863281 51% Time 2019-12-25 03:00:00 Coverage 0 21.5700012207031 57% Time 2019-12-25 06:00:00 Coverage 0 18.9399963378906 67% Time 2019-12-25 09:00:00 Coverage 3 13.7499938964844 92% Time 2019-12-25 12:00:00 Coverage 8 13.2000061035156 92% Time 2019-12-25 15:00:00 Coverage 33 12.9399963378906 93% [...]


Compile images, controlling their location

In my tex file, I have images that are spaced between paragraphs. However, when I compile the file, the images come out almost all on the same page. Is there a command I can put so that the images are located on the pdf in the same place as they were (relative to the paragraphs) in the tex file?  Thank you!  Edit: Here is an example of part of the tex file. Would a \FloatBarrier before and after the image keep the image within the part of text that I want?  Example:  For notation, let `$xy$` refer to a crossing made by an x-stick and a y-stick.  We will prove this by contradiction. Without loss of generality, assume that  we have two `$xy$` crossings (the other crossings are equivalent by rotation).  (see image 1).  \begin{figure} \centering \includegraphics[scale=.2]{2new.png} \caption{Assuming we have two xy crossings} \end{figure}  We have two cases: one where the two crossings share a stick and the second  where they do not. Regarding the former, assume the crossings share an  x-stick, again without loss of generality by symmetry.


After I used a baking pan to steam bake (in a moist environment) a cake part of it changed to this color. Why is this happening?  Can I still clean it?  (I tired soaking it with vinegar and scrubbing it but to no avail.)


How do I open .exe in ubuntu without wine or any other windows compatibility layer?

I tried to open some .exe files with wine, like Minecraft team extreme. It ran, but it was lagging too much! How do I run an .exe file without Windows/DOS/Wine?


How to write to data to copy and paste buffer?

How do i write data from the Command-line into the copy paste buffer? I see the programs xsel, and xclip and they look fine, but i would prefer a command line option. Can i redirect terminal output to the buffer some how? What is the technical name for the copy paste buffer?   I use mate for the desktop environment. The reason I want to be able to do this without installing anything is I want to be able to write scripts to use this function even on systems where i am not an administrator... i know i can compile in my home directory, but i would still prefer a standard output method. I wouldnt mind writing a bit of c-code to do it either.     I am still not certain, perhaps the copy paste buffers are just frame buffers?


Can I open an editor as part of a piping command to edit the piped string?

I would like to do this:  git --git-dir=../navcl/.git format-patch -k -1 --stdout 607780ee9 \   | nano \   | git am -3 -k    The issue is, in my other git dir, a file path is different, so I need to edit this in the patch. I could go via a file, but is there the option to edit the piping command in an editor? My use of nano here doesn't actually work, since I'm not aware how to get it to write to stdout.


If $f:\mathbb{R}\to\mathbb{R}$ is continuous and $$\lim_{x\to\infty}f(x)=\lim_{x\to-\infty}f(x)=\infty$$  Prove that $f$ has a minimum on $\mathbb{R}$; that is, there is an $x_m\in\mathbb{R}$ such that $$f(x_m)=\inf_{x\in\mathbb{R}}f(x)<\infty$$  I think the best approach would be to prove the existence of a lower bound, that is $\exists M\in\mathbb{R}:M<f(x),\forall x\in\mathbb{R}$, but I don't know how to do this. I am probably supposed to use the extreme value theorem or the intermediate value theorem, but I don't know how to do that.


This is fairly easy.  If I go to https://webserver.com/someurl?a=b, will the someurl?a=b part be protected, or just the contents of the site?


My Indian passport threading is coming off i.e. the cover of the passport is coming off, there are only 2 threads remaining.   Will it be a problem at the airport when going abroad ? Also anyone who has experience of getting a replacement passport fairly quick ? Because I need to get a passport in like 15 days.


Why is Dell OptiPlex GX520 barely running Ubuntu 18.04?

I installed Ubuntu 18.04 from a USB using Rufus onto my old Dell from 2006 (CPU: Intel Pentium 4 RAM: 1 GB). I've booted it from the BIOS successfully and I've selected "Try Ubuntu", but once I'm on the desktop it runs extremely slow and it's borderline frozen. The mouse only moves ~90 seconds and it's too slow to actually coordinate the mouse onto any desktop icons. The system time has also only moved one minute despite the PC running for over an hour. Since this renders the computer basically useless what can I do to fix this? Unfortunately, I'm not exactly a pro at this (first time using Linux) but thanks for any help.


Display List View from Subsite on Parent Site

I've got a list setup on a HR subsite that keeps tracks of Scheduled Vacations for employees. I'd like a way to display a certain view from this list as a web part on the Parent of this site. I figured just copying the list items to a list located on the parent site would be the easiest way, but the workflow that populates the subsite list can't 'see' anything located on the parent site.


Interpreting estimates from generalized models in R

I'm using R to run some generalized linear models (GLM) and I want to interpret the estimates.  If I use a GLM assuming Gaussian distribution with identity link, interpretation is easy: if the estimate for factor $x$ is $y$ then an increase of 1 of factor $x$ (if all other factors remain constant) will be estimated to result in a change in the response variable by $y$ units.  Now, if I run a GLM assuming Poisson distribution with log link, in the example above, will the response variable be expected to change by $y$ units, or by $\exp(y)$ units?  note: I'm getting the estimates from summary(model object)


I'm creating a div with a span on the spot using jquery, like so  $("[data-modal]").click(function(event) {     event.preventDefault();      var container = $("

").addClass("modal m-form").appendTo(document.body);     var close = $("").addClass("modal-close").appendTo(container); }   so far so good...  Then, i'm binding an event to the selector modal-close, like so  $(".modal-close").click(function(event) {     alert("close the dialog"); });   That one doesn't work, so i've tried this one, with no success:  $(".modal-close").on("click", function(event) {              alert('close the dialog'); });   What am i doing wrong?


After getting voted up on my question I am not notified & confused

My question got 22 votes up, but there is only 190 reputation points... better see the pics... All votes are counted about last 4 hours (today). Picture One  Picture Two


why does unhinged body rotate about centre of mass when off-centre force is applied?

Any force applied to a body creates a torque around some reference point, but if we ignore all other forces (gravity etc.) the body will rotate if and only if the torque is not zero relative to the centre of mass? How can we prove that? Why is it the centre of mass and not some other point?  If the torque around the CoM is zero, I will still be able to find infinitely many other points such that torque around all of them is not zero, but the body won't rotate at all.


Acronyms package - sort acronyms alphabetical order ShareLatex

I'm using:  \begin{acronym} \acro{URL}{Uniform Resource Locator} \end{acronym}   with package \usepackage[printonlyused]{acronym}  But my acronyms are not alphabetical sorted , and I want it. How can I make this?


Change location of macOS Notification Center alerts?

Is it possible to change where macOS Notification Center alerts appear on the screen?  They currently appear at the top right of the screen with the menu bar:    Alerts appearing in the top right tend to cover up work I'm doing more often than not. They cover up browser tabs, toolbar icons, and window titles.  I would prefer, say, the bottom right corner of the screen.  If moving the alerts is not possible, is it possible to change the screen on which they appear?


I've recently installed Fedora 19.  is installed. But it's own examples doesn't work. When I enter gedti the output is:  bash: gedti: command not found... Similar command is: 'gedit'  And it works correctly but when I enter powertop, the output is:  bash: powertop: command not found...  With no suggestion about the package. Why? should I edit some configuration files or update some cache or ... ?


Requires several people to confirm edits, but I can make edits myself?

Possible Duplicate:            The original poster didn't code-format his crontab. (Oh the pain!)  Another user edited. Very helpful. But he didn't have the reputation to make the edit complete on his own. I tried to confirm his edit. I do have the reputation to make edits on my own. But at least two votes are required to confirm his edit?  Seems silly. If I have the reputation to make edits all on my own, why does anyone else have to look over my shoulder when I'm given a "confirm edits" or "reject edits" button?  Thanks.


Python, pass by reference but argument returns unchanged

New to Python, with some background in C & Javascript.   I have the following two functions and test cases:   def switch(a, b):     print("switch__You gave me (%d, %d)." % (a,b))     y = a     a = b      b = y     print("switch__The order is now (%d, %d)" % (a, b))  def sortHi_Low(c, d):     print("SORT You gave me (%d, %d)." % (c,d))     if (c < d):         switch(c, d)         print("SORT The order is now (%d, %d)" % (c, d))     else:         print("SORT The order did not change (%d, %d)" % (c, d))  print("Case 1 \n") sortHi_Low(10, 3)  print("\nCase 2 \n") sortHi_Low(4,5)   switch() works as anticipated. sortHi_Low()runs switch(), but always returns the numbers in the same order they have been passed in.   My understanding with Python is that objects are always passed by reference. When switch took in the sort's variables as parameters, it should have changed their value by reference - then the sort should have returned those new values. However, this is what prints in the interpreter.   Case 1  SORT You gave me (10, 3). SORT The order did not change (10, 3)  Case 2  SORT You gave me (4, 5). switch__You gave me (4, 5). switch__The order is now (5, 4) SORT The order is now (4, 5)   The sort should go Hi to Low, but does not work.


How to find fixed font character width of DOM element?

Is there any easy way to reliably obtain the character width of a fixed font of a DOM element?.  I have come up with this somewhat hacky approach shown here which seems to work, but there must be a better way of doing this.  Here I get the text height from the text area element I render (trying to create a simple editor). I append it to the editor element (editorArea), this element contains the font used by my editor. I then calculate the width and removed the element.   Edit: this is TypeScript.  let lineHeight: number = this._context.textArea.lineHeight; let textHeight: number = this._context.textArea._textHeight;  let textMeasure = $('<span class="testArea" >'); textMeasure.css("line-height", `${lineHeight}px`); textMeasure.css("font-size", `${textHeight}px`); textMeasure.css("padding", `0`); textMeasure.css("margin", `0`); textMeasure.text('.123456789.123456789.123456789.123456789.123456789'); this._context.textArea.editorArea.append(textMeasure);  let w = textMeasure.width(); let p = w / textMeasure.text().length; console.log('width of test area = ' + w + ', per character = ' + p); this._context.textArea._textWidth = p; textMeasure.remove(); textMeasure = null;


Problem with filename expansion when removing software

I want to delete everything related to libreoffice. So I did a: sudo apt remove --purge libreoffice* But it's telling me that: E: Unable to locate package libreoffice*  I'm not exactly sure what obvious issue I'm missing here.


When a Battle Master fighter gets a critical hit and uses a maneuver that adds a superiority die to the damage, is that damage die doubled?

The Battle Master fighter has access to a number of maneuvers that add a superiority die to the damage roll. For instance, the Trip Attack maneuver says (PHB, p. 74):     When you hit a creature with a weapon attack, you can expend one   superiority die to attempt to knock the target down. You add the   superiority die to the attack’s damage roll, and if the target is   Large or smaller, it must make a Strength saving throw. On a failed   save, you knock the target prone.   The Critical Hits rule states (PHB, p. 196):     When you score a critical hit, you get to roll extra dice for the   attack’s damage against the target. Roll all of the attack’s damage   dice twice and add them together. Then add any relevant modifiers as   normal. [...] If the attack involves other damage dice, such as from   the rogue’s Sneak Attack feature, you roll those dice twice as well.   During our game, the fighter PC rolled a critical hit. He then wanted to use a superiority die to use the Trip Attack maneuver to trip the enemy. Based on the above rules, is the damage from the superiority die also doubled?  I'm assuming the answer is yes based on the last statement in the Critical Hits section, but I wanted to confirm.


How do I move the close, minimize, and maximize buttons to the right?

I went into appearance settings and there is no option to switch the mentioned buttons to the right side of the window. Note that I am using Ubuntu 16.04


I first used a 3.5-inch hard disk drive (HDD) 20+ years ago.  And I took it for granted that 3.5" HDD should be 3.5" wide. Until today I realized that 3.5" HDD are in fact 4" wide.  What is the reason of naming those 4" HDD as 3.5" HDD?


Let $f:\mathbb{C}\to\mathbb{C}$  be given by $z\mapsto\Re\left(z\right)$ . Where is $f$  differentiable? $f$  is definitely differentiable on $\mathbb{R}$  because on these values $f\left(z\right)=z$ . As for $\mathbb{C}\backslash\mathbb{R}$ , I am not sure. I am guessing it's not, but I can't prove it. The way I'm trying to show it is by constructing a sequence such that $z_{n}\to z$  but $\frac{\Re\left(z_{n}\right)-\Re\left(z\right)}{z_{n}-z}$  does not converge. Any help in showing this would be appreciated.


Obstruction to the splitness of an exact sequence of holomorphic vector bundles

In the book of S. Kobayashi, hyperbolic complex spaces, there is the lemma (3.A.3) on the page 153, section Royden's extension lemma, whose statement is     Every exact sequence of holomorphic vector bundles $0\to E'\to E\to E''\to 0$ on a Stein manifold splits.   The author's argument is that the obstruction to a splitting lies in $H^1(X,\mathrm{Hom}(E'',E'))$ which is zero since $X$ is a Stein manifold.  Could someone explain what obstruction means and why it lies in this cohomology group? Thank you very much.


I have a woodland scheme advice layer that has a polygon for each area of advice (brown layer in the picture). I also have a polygon layer of UK local authorities (red boundary layer in the picture). I would like to perform a spatial query which returns the local authority name for each woodland advice scheme. This would work fine if each woodland advice scheme was found in just one local authority boundary. However many are found across a boundary of two different authorities. For instance, one scheme sits across the boundaries of the authorities of Fife and Angus. The scheme is the yellow selected polygon in the picture and the red line is the authority boundary. How do I get the spatial join to return a value of Fife; Angus (or something similar to identify two values) instead of just Fife or Angus.


How stack exchange puts up a question in "Hot Network Questions" list?

I referred  and  and searched even more but I did not get a clear answer. So I decided to ask it here.  Questions   What is the criteria of a question to be put up in "Hot network questions" list? How a particular question is picked up and ranked and that too among different stack communities? How question ranking algorithm works. Clearly, only upvotes does not matter. Can it ever happen that one particular community possess all or more positions in the list? For ex, Currently, I observe only two or maximum three hot questions of a particular community in the list. Suppose, a community B got 10 great questions, is there any possibility that the list will show up more than 4 or 5 questions of community B?


How to handle pathfinding on a non-grid/non-node terrain map

I'm not sure if this is even  path-finding. All I have is a 3D map that has hills, etc. I'd like the enemy to flock an object, but also walk around other objects. These blocking objects may be added after the path is calculated, which would cause a re-calculation of the path.  What algorithm am I looking at here?


Sorry in advance for the newbie question, but I can't seem to find a good answer. Recently, I've gotten into printed circuit boards and it is all still fairly new. I'm working towards creating a 4 layer pcb and I'm curious common practice for layer stack up. I've seen some places that use the outer layers as signal layers and internal two layers as GND and VCC and vice versa other places.  Is there any  stack up for a four layer board (or any amount of layers for that matter) that is particularity advantageous?   Also from previous research it seems that having both a GND and VCC plane creates a small amount of capacitance, why is this useful?


Which characters in Game Of Thrones have a Valyrian Steel sword?

In Game of Thrones, a Valyrian steel sword is one of the most popular things in weaponry.  I can only remember Jon Snow and Brienne of Tarth possessing a Valyrian steel sword. Are there other characters (dead or alive) who were or are shown to have one?


When should I use 'sounds like, and when 'sounds as if'?

'It sounds as if Jack has found the perfect job'!   'It sounds like a violin, but I think its a viola'.  Are these the correct forms?   It was drummed into me at school over half a century ago that to say 'It sounds like he's in trouble' is very bad English. You only say 'sounds like' if it is something you can hear.


What did I do wrong in the proof by mathematical induction of $f_{2n+1}=f^2_{n+1}+f^2_n$?


Stopover in Heathrow, do I have to secure any kind of UK visa

I have a Philippine passport and a Schengen visa. My flight from Barcelona to Stuttgart will make a 10hr stopover at Heathrow. Do I have to apply for any kind of visa with UK?


Proving a combinatorial identity using a argument (favourably)

Prove the identity: $$ \sum_{j=0}^n {n \choose j} 2^{n-j} {j \choose \left[\frac{j}{2}\right]} = {2n+1 \choose n} $$  In this particular problem, I tried to use induction and prove... But it is going too clumsy and lengthy... I need some sort of combinatorial arguments or something, to prove the claim in a elegant fashion.


I want to install a Ubuntu touch on my Xperia Go smartphone, but I can't find any tutorial.. Can anyone create tutorial how to install or port it? Thanks!


Can the Eclipse Java formatter be used stand-alone

Is there a way to use the formatter that comes with eclipse, outside of eclipse?  I would like to format some java files using my formatter.xml file that I have configured using eclipse.  Does anyone have any code examples that would allow me to do this?  I would also like to use this standalone, so the specific jars that are used would be nice.


Where can the last FSTrim be seen as successful or not? (log files)

I recently installed an SSD and AFAIK Ubuntu makes a weekly FSTrim on SSD's that support it.  Is there a log file of this trims?


I have 2 forms,form 2 has a DataGridView and a label.The datagridview loads data from My.Settings.Sourcename and the label shows My.Settings.Sourcename value.  Now form 1 has a button and openfiledialog. On OpenFileDialog.Dialogresult.OK,the file name gets added to My.Settings.Sourcename and then shows form 2. And what form 2 does is already mentioned above.  Now,i can do this :  My.Settings.sourcename = Path.GetFileName(OpenFileDialog1.FileName)   or  My.Settings.sourcename = OpenFileDialog1.SafeFileName   But if i do so, My.Settings.Sourcename value becomes only the file's name, not the destination. As a result my DataGridview on form 2 fails to load data from My.Settings.Sourcename. Now to fix this i can do this :  My.Settings.sourcename = OpenFileDialog1.FileName   But then the label(form2's)'s text shows the filename along with the filepath.. Is there any way to remove the file path from the label ?


How can I start DHCP3-server later, so that it waits for a bridge interface to initialise before loading?

I have Ubuntu 10.04 server currently setup with dhcp3-server as well as a bridged interface (br0) for use with virtual machines. The problem I have is that when the server reboots, dhcp3-server fails to load because of the extra delay caused by bringing up the bridged interface.  Essentially br0 doesn't have an IP address for use with DHCP3-Server until late in the boot cycle, well after DHCP3-server has attempted to load.  Once the server has booted I can run '/etc/init.d/dhcp3-server start' without any issue.  Is there any way I can either: - Force dhcp3-server to wait until the interface has loaded before attempting to load? - Start dhcp3-server after everything else has loaded up?


Which sentence is correct?  I have read the books that you had introduced me. I have read the books that you had introduced to me.


@future runs in test without Test.stopTest() - Can that be?

For the last years I expected all async Apex means not to run in tests when there is no Test.stopTest() in my test code.  But now I have a test without this call and a future method is called.  I thought Test.stopTest() is forcing all async Apex to run instantely.   How does it really work, when do I need Test.stopTest()? Is this also true for Batch?


intel wi-fi 6 ax200 intermittent on 20.4

backport-iwlwifi-dkms v  8324-0ubuntu1 driver seems to work intermittently, freezing every few seconds for up to 30 seconds at a time.  boggles the mind how nobody bothered to test the wifi driver from the world's largest hardware company, on the world's most popular pre-installed with ubuntu computer. Any solutions?


If $A$ is symmetric and $Ax$ is an eigenvector of $A$, does $x$ must be an eigenvector of $A$?

If A is a symmetric matrix and $A^2 x = \lambda Ax$, does $x$ must be an eigenvector of $A$ with eigenvalue $\lambda$?


whats the best way to export a Datagrid to excel? I have no experience whatsoever in exporting datagrid to excel, so i want to know how you guys export datagrid to excel. i read that there are a lot of ways, but i am thinking to just make a simple export excel to datagrid function.i am using asp.net C#  cheers..


What’s the difference between ‘a hundred’ and ‘one hundred’?

For instance, let’s take a look at the next conversation:  A) How many questions does the test have?   B) A hundred.   And the difference between the conversation above and this one:  A) How many questions does the test have?   B) One hundred.  Are both conversations correct? if not, which one is correct?


What is a good way to mount / secure a regular backpack, while commuting?

This is a purely commuting issue.   I have an around 3km route to the office, and a regular backpack (laptop, accessories, notebooks, ...) which is not a problem to carry around during autumn and winter months, but in the summer the back of my shirt quickly becomes sweaty from carrying it, and carrying it only on one shoulder isn't so good stability wise, while on the road.  I'm looking for advice, what would be a good way to mount it to a bike, or securing it in some way so it lasts throughout the trip, so I don't have to carry it on me.  I've tried securing it to my rear rack with "bungee ropes" (those elastic ropes), but it tends to slip to the side during the ride, and I'm afraid it might fall down.  Bike: Author Reflex SX trekking, with rear rack installed.  Edit (Clarification of what I'm looking for): Solutions for carrying regular rucksacks, like baskets that can be secured to rear rack, or side baskets (I've yet to see examples of those), or some solutions that would enable securing a backpack directly to a rear rack, but in a way that enables me to quickly clamp/unclamp it. I'm also not interested in buying specialized bike backpacks/panniers, but wish to carry my current one.


Here is my whole bib file Refs.bib  @book{Shalev, author = {Shalev-Shwartz, Shai and Ben-David, Shai}, title={Understanding Machine Learning}, year={2014}, publisher ={Cambridge University Press, NY}, }   I am trying to run BibTex on it.  The Texmaker outputs an error:  "I couldn't open file name `Refs.aux' Process exited normally"   The TexWorks does not output anything: it just hangs indefinitely.   What is going on?


How to Combine Tables that have same columns name

I have 3 tables that has the same columns name.  The first Table is PriceList1   id      name      price   1.       A         6   2.       B         4   The second is PriceList2   id      name      price   1.       C         3   2.       D         1   The third is PriceList3   id      name      price   1.       E         5   2.       F         6   I want to combine these tables into one table   id      name      price   1.       A         6   2.       B         4   1.       C         3   2.       D         1   1.       E         5   2.       F         6   I use  Select * from PriceList1 p1 left join PriceList2 p2 on p1.id = p2.id join PriceList3 p3 on p3.id = p1.id   And I use left outer join, join, right outer join, right join.  I always got something like this.    id      name      price     id      name      price     id      name      price   1.       A         6        1.       C         3        1.       E         5                                ........


@FXML injection NullPointer during method call on nodes

OK i have a bit of a weird one probably easy to be fair but im working on a java fx app with sql database connected via JDBC. everything working good except for one thing. When you press a button the scene changes and and the data is pulled from the database this all works perfectly the debug shows that the correct values are were they need to be but its when i call a method such as label1.setText(someString); it throws a NPE.   So i run debug all the variables look good. then i do a simple print on the node itself it prints null i thought the fxml injection handled instantiation. i have checked the fxml files everything has an fx-id and every thing is mentioned in the class. its probably something really stupid ive overlooked.  this is the method that throws the Exception this class contains the mehtods start, main, handle and this method       public void insertData(ResultSet rsIn) {                     try {                          while (rsIn.next()) {                             int housenumber = rsIn.getInt("housenumber");                             String maintext = rsIn.getString("maintext");                             String img1 = rsIn.getString("img1");                             String img2 = rsIn.getString("img2");                             String img3 = rsIn.getString("img3");                             String img4 = rsIn.getString("img4");   // scrollLab is of Text type       scrollLab.setText(maintext);//here is where the NPE is thrown                           }                      } catch (SQLException sql) {                         sql.printStackTrace();                      }               }   the other class contains all sql related methods and the getStuff method where Resultset rsIn comes from  public void getstuff(String buttonid) {          switch (buttonid) {              case "winterfell":                 try {                       conn = DriverManager.getConnection(DB_URL, USER, PASS);                     Statement stark = conn.createStatement();                     System.out.println("Fetching records");                     String sql = "SELECT * FROM houseinfo WHERE housenumber = 1";                     rs = stark.executeQuery(sql);                     GOT_Map map = new GOT_Map();                       map.insertData(rs);                     }catch(SQLException e){}                   break;   and finally the handle method starts the process this is inn the controller class same class as where the exception is thrown  @Override     public void handle(ActionEvent event) {         Sql_handler sql = new Sql_handler();         try {  // will load the new scene for all map buttons but will pull data from the database to fill blanks             if (event.getSource() == winterfell) {                 System.out.println("winterfell clicked");                  //getting reference to the button's stage                  Stage stageref = (Stage) winterfell.getScene().getWindow();                 inforoot = FXMLLoader.load(getClass().getResource("infoView.fxml"));                 stageref.setScene(scene2);                 sql.getstuff("winterfell");   this is probably an easy fix that ive overlook been working on this none stop past two days  any help is much appreciated


Linear transformation of a binomial random variable?

Let $X$ be a binomial random variable with parameters $n$ and $p$. Next, let: $$ Y = aX + b $$ I know that: $$ \mathbb{E}[Y] = \mathbb{E}[aX+b] = a\mathbb{E}[X] + b = anp + b \\ \text{Var}(Y) = \text{Var}(aX+b) = a^2 \text{Var}(X) = a^2np(1-p) $$ But how is $Y$ distributed?


I have been trying to install 16.04 for two long days now. I need help. I dont really know what im doing since 9.04 is unsupported. I want to install 16.04 however I tried mounting the ISO and nothing happens.   EDIT: I installed rufus 2.9 and an error occured while loading the archive. I have a USB I could use, but I can't get a software to work properly.   EDIT #2: "Disk Image Writer" does not come up. I tried other options that seemed similar but all had an "error". If it helps I installed this ubuntu 9.04 from a CD. I do not have any other blank CDs but I do have a 64GB flash drive.


How can I completely remove all traces of Java on my system?   I already know  in case I need it again.


Please provide a way to download SEDE data via an API

I recently suggested on the Stack Apps site that , and it was suggested I reference the feature request here, for visibility.  My use case is a query that the API does not support, so I thought it would be interesting to get it programmatically from SEDE instead. I wonder if this feature might be of interest to others here?  outlines the current ways that SE data is available via various APIs and UIs.  I wonder if my use case (retrieving revisions filtered by user) might have been supported by OData,  since April of this year.  This question has sort-of , though that was not an explicit feature request, and is now rather out of date. It would be good to find out what the current views are on this topic, and indeed whether there is much demand.  My use-case does not urgently require this, since I can use public SE screen scraping or SEDE CSV downloading. From reading around the SE Meta network, both of these approaches seem to be tolerated, as long as it is done with careful regard to frequency and bandwidth.


I can not connect to SMB shares after upgrading macOS from Mojave to Catalina

Before I upgraded, I used Command K to connect an SMB share. I had upgraded macOS from Mojave to Catalina yesterday. When I use Command K to connect that SMB share, it doesn’t work.   Does the new macOS disable SMB? Help me please, it has decreasesed my work efficiency.


What is $$\sum_{n=2}^\infty \frac{1}{n^2 -1}$$ There is a generalized formula for $\frac{1}{n^2+a^2}$. But why about negative $a$?


Prove the following or provide a counter-example if the claim is false.

log5(2) ∈ I. Hint: Consider using the Fundamental Theorem of Arithmetic.


We accidentally spilt vinegar on netbook (EeePC). What should we do about it? Should we try to wash vinegar out or just let it dry?


how do I restore the Download stack in the iMac Dock?

Download stack is missing from the iMac Dock. The Download stack was originally present but may have been removed with the High Sierra update. Presently all downloads go directly to the download file and plus be recovered from the Finder application. I have not been able to find guidance on how to solve this problem in the Safari help.


I am encountering this error:  Err:27 http://ppa.launchpad.net/midori/ppa/ubuntu bionic Release                  404  Not Found [IP: 91.189.95.83 80]


What's the difference between "helpful" and "Helpful" flags?

Looks like a text inconsistency to me:   Spam flags are Helpful Other flags are helpful


Show that ideal $(X,Y)\subset \mathbb{R}[X,Y]$ is not invertible

I think I have to proceed by contradiction, but I don't know how to do it. Any suggestion?  Thanks for your help.


Why do non-Newtonian fluids go hard when having a sudden force exerted on them?

You can dip your hands into a bowl of non-Newtonian fluid but if you are to punch it, it goes hard all of a sudden and is more like a solid than anything else.   What is it about a non-Newtonian fluid that makes it go hard when having a force suddenly exerted on it? How does it go from being more like a liquid to a solid in such a short amount of time? Does it change its state as soon as the force has made contact with it?


What happens when Wolverine's head is removed?

In the situation where Wolverine has his head cut off (which I am sure would be no simple task, most likely requiring an adamantium weapon of some form) -   What would happen?   Would his head regrow a new body? Or would his body regrow a new head? This question specifically deals with what happens after the decapitation with Wolverine's regenerative abilities. Has this already been covered via comics?


Why do uninitialized objects of built-in type defined inside a function body have undefined value?

Question: Why do uninitialized objects of built-in type defined inside a function body have undefined value, while objects of built-in type defined outside of any function are initialized to 0 or ''?  Take this example:  #include <iostream> using std::cout; using std::endl;  int ia[10];                   /* ia has global scope */  int main()  {     int ia2[10];              /* ia2 has block scope */      for (const auto& i : ia)         cout << i << " ";     /* Result: 0 0 0 0 0 0 0 0 0 0 */      cout << endl;     for (const auto& i : ia2)         cout << i << " ";     /* Result: 1972896424 2686716 1972303058 8                                  1972310414 1972310370 1076588592 0 0 0 */     return 0; }


How do I remove duplicates from a C# array?

I have been working with a string[] array in C# that gets returned from a function call. I could possibly cast to a Generic collection, but I was wondering if there was a better way to do it, possibly by using a temp array.  What is the best way to remove duplicates from a C# array?


Closed form for $\int \frac{1}{\sin^nx +\cos^mx}dx$

Is      $$\int \frac{1}{\sin^nx +\cos^mx}dx, \qquad m,n \in \mathbb Z$$   Always expressible as a combination of elementary functions?


I am trying to use biber for a simple report but I am getting     This is BibTeX, Version 0.99d (TeX Live 2015/Debian) The top-level auxiliary file: document.aux I found no \citation commands---while reading file document.aux I found no \bibdata command---while reading file document.aux I found no \bibstyle command---while reading file document.aux (There were 3 error messages)   in Texmaker.  These are the last few lines of the log:  Package biblatex Info: Reference section=0 on input line 13. Package biblatex Info: Reference segment=0 on input line 13. LaTeX Warning: Citation 'a' on page 1 undefined on input line 16. LaTeX Warning: Empty bibliography on input line 18. [1 {/var/lib/texmf/fonts/map/pdftex/updmap/pdftex.map}] (./document.aux) LaTeX Warning: There were undefined references. Package biblatex Warning: Please (re)run Biber on the file: (biblatex) document (biblatex) and rerun LaTeX afterwards. Package logreq Info: Writing requests to 'document.run.xml'. \openout1 = `document.run.xml'. )   I don't quite understand what's wrong here.  document.tex  \documentclass[]{article}  \usepackage[autostyle]{csquotes}  \usepackage[     backend=biber,     style=authoryear ]{biblatex}  \addbibresource{references.bib}  \begin{document}   This is \cite{DBLP:journals/corr/abs-1301-3781}  \printbibliography   \end{document}   references.bib  @article{DBLP:journals/corr/abs-1301-3781,   author    = {Tomas Mikolov and                Kai Chen and                Greg Corrado and                Jeffrey Dean},   title     = {Efficient Estimation of Word Representations in Vector Space},   journal   = {CoRR},   volume    = {abs/1301.3781},   year      = {2013},   url       = {http://arxiv.org/abs/1301.3781},   timestamp = {Thu, 07 May 2015 20:02:01 +0200},   biburl    = {http://dblp.uni-trier.de/rec/bib/journals/corr/abs-1301-3781},   bibsource = {dblp computer science bibliography, http://dblp.org} }


How to get more than 2000 records from custom object?

Problem  I'm trying to make a standard query to get all records from salesforce custom object. I'm using SOAP API.  I have more than 40k records in object.  But salesforce OFFSET limit 2000 record. which is give error.  So, I have try out some workaround solution,     SELECT Id, Name, CreatedDate FROM Account WHERE CreatedDate >   "Last-Returned-Created-Date" ORDER BY CreatedDate LIMIT 2000   But this query not work, if there was more than one object created at that exact date and time.  Question  Is there any way to do this?  Actually i am implementing logic in PHP and calling salesforce get API with above mention SOQL query as query parameter.


Why did Dumbledore act surprised by the Horcrux memory in the Harry Potter and the Half-Blood Prince movie?

Now, the Half-Blood Prince movie had far too many flaws, but the most nonsensical and unnecessary change is Dumbledore's surprise at the Horcrux memory.  In the book Dumbledore already knew about the Horcruxes and needed the memory only as confirmation to how many there were. In the movie, though, it seems as though he's shocked by the discovery after he sees the memory and yet he's already destroyed the ring. So that doesn't really make sense IMO. I mean, how come he's already destroyed the ring if he didn't know about the Horcruxes?


Lifting frictional force and relative values for kinetic vs static friction

My physics textbook says that friction mainly arises due to intermolecular attraction between atoms of the objects in contact and clashes between peaks are only significant for rough surfaces. I was wondering, if friction arises due to intermolecular attraction, why doesn't it oppose lifting a body as well(considering that the atoms are attracted to each other). Why doesn't it oppose rolling? (even when there is no slippage, if atoms of the contact patch are attracted to the atoms in the ground, there should be a force opposing movement)   Another related question: Is there an intuitive reason why(for most pairs of surfaces) kinetic friction is lower than static friction?


I installed Ubuntu but then on the restart it still gives me the option to install it

Is this normal or is there some thing wrong?  The installation options are still on the desktop.  I had selected the restart now option.


How does the covariance matrix of the predictors in multiple regression relate to the matrix $(\mathbf{X}^T \mathbf{X})^{-1}$?

Note in advance, due to my question previously being marked as a duplicate, that the question I ask here is concerned with the relationship between $(\mathbf{X}^T \mathbf{X})^{-1}$ and $\text{Cov}[\mathbf{X},\mathbf{X}]$, not the relationship between $(\mathbf{X}^T \mathbf{X})^{-1}$ and $\text{Cov}[\mathbf{X},\mathbf{y}]$ which is covered . The matrix formulation of multiple regression for $n$ observations is $$ \mathbf{Y} = \mathbf{X}^T \beta + \varepsilon, $$ where the error $\varepsilon$ has finite variance $\sigma^2$. Let $\mathbf{b}$ be the estimated coefficients found when we solve the multiple regression problem with least squares. In Theorem 4.3 of the book Econometric Analysis by William H. Greene it says that asymptotically $\mathbf{b}$ is distributed as $$ \mathbf{b} = \mathcal{N}\bigg(\beta,\frac{\sigma^2}{n}Q^{-1}\bigg), $$ where $Q$ is defined in equation 4.19 as \begin{align*} Q := \text{plim}_{n \to \infty} \frac{\mathbf{X}^T \mathbf{X}}{n}. \end{align*} which is a positive definite matrix. Suppose we write the covariance matrix of $\mathbf{X}$ as $$ \text{Cov}[\mathbf{X},\mathbf{X}] =  \begin{bmatrix} \sigma_{X_1 X_1} & \sigma_{X_1 X_2} & \dots \\ \sigma_{X_2 X_1} & \sigma_{X_2 X_2} & \dots \\ \vdots & & \ddots \\ \sigma_{X_n X_1} & \dots & \dots & \sigma_{X_n X_n} \end{bmatrix}, $$ where $$ \sigma_{X_i X_j} =  E[(X_i-E[X_i])(X_j-E[X_j])], $$ I want to know how the matrix $(\mathbf{X}^T \mathbf{X})^{-1}$ relates to the covariance matrix $\text{Cov}[\mathbf{X},\mathbf{X}]$. For example, if we modify the elements of $\mathbf{X}$ to make them more collinear, the off-diagonal elements of $\text{Cov}[\mathbf{X},\mathbf{X}]$ will increase in magnitude and $(\mathbf{X}^T \mathbf{X})^{-1}$ will become 'harder' to invert. But I am looking for a precise mathematical expression that relates the two matrices. Can $(\mathbf{X}^T \mathbf{X})^{-1}$ be expressed in terms of $\text{Cov}[\mathbf{X},\mathbf{X}]$ somehow? E.g., can the elements of $(\mathbf{X}^T \mathbf{X})^{-1}$ be written in terms of the elements of $\text{Cov}[\mathbf{X},\mathbf{X}]$?


When I choose Hangouts On Air it automatically publishes a post to my profile with the "join hangout" button on it, but the problem is how to share this, in for example Facebook, so that people can also join that specific hangout.  How do I share the URL of a Google+ hangout?


I thought this would be a particularly simple problem but it is turning out to be quite the opposite. I am sure I am doing a very simple mistake.   The problem statement is that there is a mass which is just barely kept on the spring (help by the force equal to the weight of the spring) such that the spring is uncompressed. As soon as I let the object go, it will compress the spring and come to rest at some height. The energy stored in the spring will be equal to the difference in the potential energy at the two height of the spring (compressed and uncompressed),  $$mgh_i -mgh_f= 1/2 kx^2$$ Furthermore, the compression of the spring would just be the difference in the $h_f -h_i$. This gives me two roots for compression,  $$ x=0 $$ And the second would be, $$ mg=1/2kx $$ But then by this, $kx=2mg$ and $kx$ is force by Hooks law, but then does it means that the force compressing the spring is twice the weight of the object? That sounds odd. I was expecting I would just recover Hooks law but I guess I am doing something wrong here. But I am not sure what that is.   Any help will be much appreciated.  P.S. This is not a homework problem. We are designing a project for our school.  Thanks for your time.


Will 18-55 and 55-200 lenses give me the same zoom abilities as a single 18-200 lens?

I'm new to cameras with interchangeable lenses.    I'm looking at a 18-200mm zoom lens or a 55-210mm zoom lens.  I already have an 18-55mm lens.  Is it fair to say that an 18-55mm lens, combined with a 55-210mm zoom lens, will give me the same "zoom range" as the 18-200mm lens?  (Ignore the fact that the first is 210mm, and assume it's a 55-200 for the same of this question).  To get the zoom % you would take 200/55 = 3.63 X Zoom 200/18 = 11.11 X Zoom  The first has a lower zoom ratio, but that's only because the lowest field of view is 55mm which would be the exact same field of view at the highest zoom of my 18-55mm.  Meaning it picks up where the 18-55 left off.  So, an 18-55mm and a 55-200mm would provide the exact same field of view and zooming options than a single 18-200mm lens.  The only difference is having to swap between the lenses.  Based on what I understand I believe this to be the case.  Am I spot on?  Is there anything else I should be considering or be aware of?  Both lenses are Sony and will be fitted on my new a6000.


Getting variance of function of two uniform RVs

Have two independent RV's $X$ and $Y$ sampled uniformly from $[0,1]$ and $C = (X-Y)^2$. Want $V(C$).  Rewrote as $V((X-Y)^2) = V(X^2) - 4V(X)V(Y) + V(Y^2)$ but that's too messy. Is it correct to write $\int_0^1\int_0^1 (x-\mu)^2\cdot f(,y) \cdot dxdy = \int_0^1\int_0^1 (x-1/12)^2\cdot f(x,y) \cdot dxdy$ ? Bit unsure how to evalute further.  Been awhile since I took a probability course so appreciate the help


On a rackspace cloud server, I opened up Putty and it WORKS if I do "telnet localhost 25" on the VPS, the postfix process is running as well  However, if I try to telnet remotely like "telnet domain.com 25" it doesn't work, I've tried "telnet domain.com 22" and it works.  C:\Users\Shane>telnet domain.com 25 Connecting To domain.com...Could not open connection to the host, on por t 25: Connect failed


OS: ubuntu 14.04 LTS Processor: Intel® Core™2 CPU 6320 @ 1.86GHz × 2  Graphics: Intel® 965Q OS type: 64-bit   I have spent about a week researching a solution to my problem, which only occurred after upgrading from Ubuntu 12.04 to Ubuntu 14.04. Every article I have read online, has not resolved my issue. Neither has a fresh install from live CD. I am able to boot and login successfully but some programs activated (either from dash, launcher or terminal) are not available. These are programs like Gimp, System Monitor, and Gparted.  Even when I have tried to re-burn my ISO file, my CD/DVD is not recognised in Startup Disk Creator. The brand is recognised, but says it only has 2MB of memory, when it has up to 4.7GB. I have tried different disks and all are recognised as only having 2MB of memory, even though the brand of the disk is proven to change.   Everything only seems to work after a fresh install of the ISO (from live CD) and I re-install my back-up files. All programs work perfectly. Then I shut down or logout and into a new user, and that's when I can no longer access programs. I can open them through all the methods available, but the window doesn't open on desktop. The icon locks to the launcher as if the program is open, with the outline of a triangle, rather than the full triangle I get next to Firefox and Thunderbird, which I can always open without issue.  From my research, the outline of a triangle next to the icon in launcher, means the program is open, but its at a different location. When I use Ctrl-Alt-Tab, I can see the window has clearly been activated as if it is operational, but I cannot access the window from my desktop. I only have one monitor, so the information is not being redirected to a second monitor, as I've read has been the case for some.  Upon reading another article, I followed advice issuing commands in terminal (I cannot remember which command, I apologise) but the output was "Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?" This gave my first indication the system is perhaps operating under two identities, or my xsessions are not being executed properly, thus causing a misfire to home directory.  I have tried creating a new user and installing my back-up files there, but the same problem occurs after logging out or shutting down. I have also tried installing kubuntu in an attempt to resolve issues which may be occurring in unity - but I have the same problem of the program opening, but no window making it accessible to the user. I even tried GNOME but the only thing visible was the wallpaper.  Although I can boot without problem, I will include the URL issued after completing Boot Repair, in case it has information which can help.    If you require further information please ask. I will need specific commands to enter into terminal to retrieve the information, however.  *(steeldriver, identified the conflict below)


I have an object Application and Application Address.  Type field on Application address which has values Addr1,Addr2,Addr3  Trigger on application :- When new application is created, Create 3 application address of different type.  On my vf page. I want to show all 3 application address in different page block section.  I tried this and its working. But want to know how is this possible using map In constructor  this.bizapplicationaddress =[SELECT Type__c, Name, Id, Contact_Person__c, Contact_Person_Title__c, Application__c, Address__c, Additional_Instructions__c                                      From Application_Address__c                                     WHERE Application__c = : this.application.id                                     AND Type__c = 'Address1' LIMIT 1];                        this.corapplicationaddress =[SELECT Type__c, Name, Id, Contact_Person__c, Contact_Person_Title__c, Application__c, Address__c, Additional_Instructions__c                                      From Application_Address__c                                     WHERE Application__c = : this.application.id                                     AND Type__c = 'Address2'LIMIT 1];                    this.regapplicationaddress =[SELECT Type__c, Name, Id, Contact_Person__c, Contact_Person_Title__c, Application__c, Address__c, Additional_Instructions__c                                      From Application_Address__c                                     WHERE Application__c = : this.application.id                                     AND Type__c = 'Address3' LIMIT 1];        public void copyAddresDetailstoBiz() {     this.bizapplicationaddress.Contact_Person__c            =   this.regapplicationaddress.Contact_Person__c;     this.bizapplicationaddress.Contact_Person_Title__c      =   this.regapplicationaddress.Contact_Person_Title__c;     this.bizapplicationaddress.Address__c                   =   this.regapplicationaddress.Address__c; } public void copyAddresDetailstoCor() {     this.corapplicationaddress.Contact_Person__c            =   this.regapplicationaddress.Contact_Person__c;     this.corapplicationaddress.Contact_Person_Title__c      =   this.regapplicationaddress.Contact_Person_Title__c;     this.corapplicationaddress.Address__c                   =   this.regapplicationaddress.Address__c; }   In page block  <apex:pageBlockSection columns="1" id="pbRegisteredAddr" title="Address1">     <apex:inputField value="{!regapplicationaddress.Contact_Person__c}"/>     <apex:inputField value="{!regapplicationaddress.Contact_Person_Title__c}"/>     <apex:inputField value="{!regapplicationaddress.Address__c}"/>  </apex:pageBlockSection> <apex:pageBlockSection columns="1" id="pbBusinessAddr" title="Address2"><apex:commandLink action="{!copyAddresDetailstoBiz}" value="Same As Above" reRender="pbBusinessAddr"/> <apex:inputField value="{!bizapplicationaddress.Contact_Person__c}"/>     <apex:inputField value="{!bizapplicationaddress.Contact_Person_Title__c}"/>     <apex:inputField value="{!bizapplicationaddress.Address__c}"/>  </apex:pageBlockSection>  <apex:pageBlockSection columns="1" id="pbCorrespondenceAddr" title="Address3"> <apex:commandLink action="{!copyAddresDetailstoCor}" value="Same As Above" reRender="pbCorrespondenceAddr"/>     <apex:inputField value="{!corapplicationaddress.Contact_Person__c}"/>     <apex:inputField value="{!corapplicationaddress.Contact_Person_Title__c}"/>     <apex:inputField value="{!corapplicationaddress.Address__c}"/>     <apex:inputField value="{!corapplicationaddress.Additional_Instructions__c}"/> </apex:pageBlockSection>


ANOVA - Adding interaction term changes a main effect to being insignificant. How can that be?

UPDATE: I don't think the single posted answer is correct. When I run summary(lm(DependentVar ~ IndVar1 * IndVar2, data = Data1)) the first listing is IndVar11 @ p = 0.113, and the four IndVar1:IndVar2 entries are all non significant (p = 0.16 to p = 0.41). Regarding the suggested duplicate - the accepted answer there is about small p-value differences and small samples sizes, neither of which is the case here.  In that answer, the author says he doesn't see other way this can happen.  So what is happening here?  I'm looking for an explanation as to how an independent variable can go from being highly significant to being highly insignificant when an interaction term is added.  IndVar1, below. IndVar1 has 2 levels.  IndVar2 has 5 levels. Thanks > Model_1 <- aov(DependentVar ~ IndVar1 + IndVar2, data = Data1) > Anova(Model_1, type="III") Anova Table (Type III tests)  Response: DependentVar              Sum Sq   Df    F value    Pr(>F)     (Intercept) 18486.4    1 11622.9984 < 2.2e-16 *** IndVar1         23.7    1    14.8532 0.0001353 *** IndVar2    39.7    4     6.3382 5.711e-05 *** Residuals    2175.1 1341                          --- Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1      > Model_1 <- aov(DependentVar ~ IndVar1 * IndVar2, data = Data1) > Anova(Model_1, type="III")   Anova Table (Type III tests)  Response: DependentVar                     Sum Sq   Df   F value    Pr(>F)     (Intercept)        15473.4    1 9781.1865 < 2.2e-16 *** IndVar1                 4.3    1    2.7758 0.1131780     IndVar2           36.8    4    5.8247 0.0001231 *** IndVar1:IndVar2    14.1    4    2.2124 0.0666647 .   Residuals           2149.1 1337                         --- Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1 >


is it safe to share a scanned copy of my international passport to the any recruiting agency?

i want to work in singapore/canada for sometime and the local recruiting consultancies are asking me to share my passport details for onward process. it is heard that this kind is dangerous. what do you say?


How to delete list of played movies in Movie Player

Movie Player lists names of last few movies played.   How to delete that list ?   Going forward, I'll use VLC.  But I'd like to clear that viewed movie history list.


Performing multilayer intersection in QGIS?

This question on Multilayer intersection in QGIS was asked by "julsbreakdown" a year go. But I am a newbie and I am not really sure how it works with SQL as suggested in the responses. And I am using the same image posted by "julsbreakdown." Here is the link of the previous thread:   Using QGIS (or its plug-in) or python script, how do I get the polygon (x) which is the intersection of four polygons?


this question is more of the understanding of .run installation, when you download a file and use .run to install it, does it actually interact with Linux's package manager, or does it work just like a portable program, where once you delete the installation path, it's gone?  For example, if I download Qt Creator which has a .run file, and I install it in Documents/Qt, does that mean it's installed in that path and once I delete that folder it's gone from my system?


Can't pass null for argument 'pathString' in child() When i try to open the activity (app crashed)

I am trying to read some data from firebase database, and when i try to open the activity to see the result i get this error:  Caused by: java.lang.NullPointerException: Can't pass null for argument 'pathString' in child() The error is poiting me to the first line of this code  reference = FirebaseDatabase.getInstance().getReference("Users").child(userid);         reference.addValueEventListener(new ValueEventListener() {             @Override             public void onDataChange(@NonNull DataSnapshot dataSnapshot) {                 User user = dataSnapshot.getValue(User.class);                 username.setText(user.getUsername());             }              @Override             public void onCancelled(@NonNull DatabaseError databaseError) {              }


Leaving USA to go to Brazil. Also have Irish Passport which doesn't need a visa for Brazil

Airline ticket was booked with USA Passport. Brazil requires Visa for USA Citizens. I have an Irish Passport. Irish Citizens do not need Visas to visit Brazil. How does USA Airline handle that? Do I show USA Passport to verify ticket, then show Irish Passport to show I can get into Brazil without a Visa? And if that is how it works, how does USA Airlines know that an Irish Passport does not need a Visa to enter Brazil? Lastly, and maybe not important, does Brazil see that I flew in from USA and booked ticket with USA passport?  Thanks in advance!!


Ubuntu Gnome - How to remove Gnome and install regular Ubuntu 17.10

I installed Ubuntu (16.04) on my machine, but I also wanted to check out other display managers so I ended up using Gnome.  I just upgraded to 17.10 which ships with Gnome, but I believe something got messed up with the preexisting configuration and the new Ubuntu, I get two panels on the top and bottom parts of the screen and no left side panel as it looks like in the demos.  Is there a way to completely remove the Gnome version I had in my system with all of it's configuration and install the one that ships with Ubuntu? (ideally without having to reinstall the whole operating system)


I have asked a similar question before, and didn't get the answer I was looking for, so i'll try to be more clear here. If necessary here is the link:   Okay I am trying to find the lower Riemann sum.  The question is $f(x)=(x-2)^{2} +1, [a,b]=1,3,$  find the lower sum with $n=3.$  An answer given by someone: ''' f′(x)=$2(x−2)$   For $n=3$, the partition of $[1,3]$ is  the 3 sub intervals $[1,5/3]$ and $[5/3,7/3]$ and $[7/3,3]$  f is decreasing at $[1,2]$ and increasing at $[2,3]$.  in $[5/3,7/3]$ the minimum of f(x) is f($2$)= $1$  the lower sum is $2/3$*(($(5/3 −2)^2 +1)$+$1$+($(7/3 −2)^2) +1)$  '''  I have two major questions:   I see the derivative was taken, was this to see where f was increasing and decreasing? If so how do I do this, just plug in the partitioned values in the derivative? By definition of a lower sum our delta x was 2/3, which implies our  x_k=a+k*(delta x) = 1+(2/3)k. We did not use this x_k anywhere, why is it necessary to calculate this(my text does it), I know in a right sum we would plug this x_k anywhere their is an x, but we didn't do that here.


I have a rogue item on my menu bar from a terrible piece of printer/scanner software. I long ago removed the app, but the button for the app remains in the menu bar.   Is there any central way for me to remove an item from the menu bar? Any plist I can hack? command line trick, etc?  It's the one to the left of the Facebook icon:    (I tried holding Command and dragging it away, but it doesn't seem to respect that convention.)


I am a newbie in C and I stumbled on this c-structure:  typedef struct {    int dog;    int cat; } FOO;  typedef struct {    int  id;    FOO* pRow[0] } BAR;   I know basic c and c++ but I have no idea the motivation of the following line: "FOO* pRow[0]".  If the author wants to define a pointer to an array of FOO, then he/she should just define it as "FOO* pROW", right? Why does pROW[0] stands for in this case then?  Please enlighten me. Thanks!


When I save something as an OBJ file the texture does not save with it, why?

I use Blender to render objects as this makes them look better. The problem is when I export one of my characters as an OBJ file and then import it back into Blender to render, the textures seem to not have been saved with it and the character's surface appears pink when clicking on 'Texture Solid'. At first I thought I accidentally pressed a button without realizing but, I sent the file to my friend and it was also pink for him so I began to think I was missing the texture. I have been scanning forums and found the suggestion of: File>External Data>Find Missing Files. However, this did not work either. I am completely and utterly stuck on what to do and my hobby is now hold up until I can fix it. The second image shows the problem I am having. The first image shows it's how some textures don't export with the file when I export the character from 'Roblox Studio'


Keyboard shortcut for "open a terminal here"

How can I create a keyboard shortcut so that when I press F12 in nautilus (or desktop), I get a terminal in the current directory?


Opening multiple files on Python Different Encoding

I have kept a good number of files in a folder. Now I want to read all of them.  They are in different formats and different encoding. Using listdir/glob.glob I am able to find the list but  how to open/read or process them for different encodings?  If any one can help me out.I am using Python3.2 on Windows.  Regards, Subhabrata Banerjee.


Binding events to dynamically added content

I have a jquery calendar wich it takes events from a php file wich is feeding json data. I want to bind a function on every event added to calendar. And I did this:  $(this).bind("mouseenter", function(){         alert("a");         });   It works, but only on second rollover on each event. First time I roll over nothing happens.


Motherboard makes high-pitched chirping noise; will it stop by itself, or what do I need to do to fix it?

I know computers, I have been fixing them and building them for over a decade... but I don't know the exact electronics of them.  My personal desktop PC is making an irregular, but constant, extremely high pitched chirping noise. I know this could be my hard drive, but I've heard that noise before and I believe this is a capacitor or part of the electronics. This noise is right at the edge of my hearing and I can feel it more than I can hear it.   After a while, it starts to give me a headache and makes me physically sick.   How long will this last? Is there anything I can do to fix it (short of replacing the entire motherboard)?  My Motherboard:


Why do we need a waveguide in a microwave oven?

Why do we need a waveguide to move microwave power from the magnetron to the microwave cavity? Can't we just push magnetron antenna into the cavity? Why does it have to go through a waveguide?


When I click on a person's name in the chat list, sometimes an invisible chat window opens. I can see the outline of the window, but nothing else. In every session, 3-4 such windows open. I have cleared cache, cookies. I have refreshed browser, restarted everything. Deleted Adblock extension thinking it could be a pop up issue, but nothing has worked. I have the same issue, and every time I need to chat with someone, it can happen at random, so I refresh Gmail and hope that the person I want to talk to at that point, will not end up being such a window. If it is, I refresh again. Sometimes I need to do this 3-4 times to be able to talk to one person.


If $L:\mathbb{R}^n \rightarrow \mathbb{R}^m$ and $m<n$ linear trans. What does this tell about injectivity and surjectivity?

Let $L:\mathbb{R}^n \rightarrow \mathbb{R}^m$ be a linear transformation such that $m<n$. What does this tell you about injectivity and surjectivity?  I can't really create a (counter) argument against any of these alternatives:   $L$ is injective $L$ is surjective $L$ is not injective $L$ is not surjective   My intuition says that one could find examples where $L$ is both injective and/or surjective, but not for all inputs outputs.


If Ax = 0 for every x in $R^n$, A is a zero matrix

If A is a $m$ $x$ $n$ matrix such that: $Ax = 0$, for every $x \in \mathbb{R}^n$, then A = 0 is the zero matrix.   I have no idea how to begin proving this. The only hint is to consider a $j$ column in the Identity matrix $I_n$, but I don't see how that helps. Can anyone help me?


I'm doing a short little animation for a side project and the length is 167 frames. I think I accidentally clicked something and now it only plays up to half of the clip before looping.  So for example let's say I was doing an animation of someone sitting down. Halfway through this animation, it just cuts off as if it reached the end of the clip already.  Also that green line that runs while the animation is playing is always really far behind my mouse. I'm really stuck and confused by this, so I'd really love some insight on this subject.  Also due to copyright, I can't actually share or upload the file or any of it's contents.  Here are some screenshots of the timeline and settings:


Why don't we consider centrifugal force on a mass placed on earth?

Let us say a block of mass is placed on the surface of earth. Then while drawing the forces on that body, we say:   Force $F = mg$ acting towards the center of Earth. Normal reaction $N$ offered by the surface of Earth.   If no other forces are acting, we say $F=N$. But what about the centrifugal force $m\omega^2R$ . Why don't we ever bring that into picture? What am I missing?


Operand should contain 1 column mysql php

Operand should contain 1 column  What wrong with my code is it mean AND I try to insert into activitynote table by selection   <?php    require_once('Connections/Thaymay.php');    mysql_select_db($database_Thaymay, $Thaymay);       $activityid = $_POST['select'];    if($_POST) {     foreach($_POST['namebox'] as $check) {              echo "$check \n ";              echo "<br> ";               $query_ReSeActi = " INSERT INTO `ph3`.`activitynote` ( `idmemberref`, `idactivity`, `manaferid`, `staffinput`) select (              idmemberref,    $activityid,    manaferid,  'system'  ) from activitynote where id = $check ;    ";             $RsActivitynoteMem = mysql_query($query_ReSeActi, $Thaymay) or die(mysql_error());      } }    ?>


Salesman, company monopoly, robotic competitor, razor blades

I read this story in an anthology several years ago I think it was either a robot anthology or a salesman is sci-fi/fantasy anthology   A man is teleported (I think) to a planet to explore it for a company, he is happy because the pay is really good but then he realizes that the company has the sole monopoly on resupplying him and they charge exorbitant fees for even the smallest things (I think razor blades are mentioned somewhere)  A robot appears from somewhere and starts trying to sell him stuff thats better than the company provides and at cheaper prices the company is understandably upset about this and threaten him with breach of contract  thats pretty much all I got


I have a function, unique(a) that takes a list, a, of numbers and returns only one of each value. At the same time, it maintains the order of the list. I also have a function, big_list(n) that generates a list of len(n).  The reason to why I reverse the direction of the list is so that when removing values, It removes them from the back of the original list, just to make the modified list more clean and readable when comparing it to the original list.   The function works when I have a relatively small length of the list I'm creating, but when I get to larger lengths, such as 1,000,000 for ex, the execution time takes FOREVER.  If anyone can help me by making my function a lot faster, that would be great!  FYI : I need to use a set somewhere in the function for the assignment I am working on. I still need to remove list items from the back as well.  Thanks in advance!  def big_list(n) :     # Create a list of n 'random' values in the range [-n/2,n/2]     return [ randrange(-n//2, n//2) for i in range(n) ]  def unique(a) :     a = a[::-1]     b = set(a)     for i in b :         while a.count(i) != 1 :             a.remove(i)             a.count(i)     a = a[::-1]     return a


I have a dataset where there is a high degree of multicollinearity, with all variables correlating positively with each other and the dependent variable. However, on some of the models I run I get a couple of significant negative coefficients. Basically there are two coefficients that depending on what variables I include in the model, I can manipulate their signs.  My understanding is that if the variance-covariance matrix only contain positive values, then all coefficients should also be positive. Is this correct?


Attribute table update after v.split on GRASS GIS

So I just used v.split to create shorter segments (with just 2 vertices) of my contour lines. I was left with about 22000 lines but, when I open the attributes table, I find no more than 45 entry lines.  How can I make it so I have a unique ID for each of my new line segments?


Steps for going from Polyakov action to low-energy effective action (SUGRA?) in String Theory

A lot of string-theory questions have been asked here. This one is, hopefully, different in that this inquiry is specific and the expected answer would be more mathematical than philosophical in character.  To give some context, I'm familiar with LQG, QFT etc. I'm a beginner in CFT and string-theory. On reading papers on AdS/CFT and String Theory the following sentence often appears: "The low-energy effective action for $x$ dimensional ST of type $y$ reduces to that of supergravity (SUGRA) in $z$ dimensions with matter fields of types $a$, $b$ and $c$".  The $64,000 dollar question any noob, such as me, wants answered is what are the mathematical/technical steps or arguments which lead us from the fundamental action of string-theory (the Polyakov/Nambu-Goto action) to a low-energy effective description. Of course, I might be asking a question for which the only concise answer is: "go read GSW". Here's hoping otherwise ;)


Book identification: technologically-enhanced man (1970s/80s YA)

I have very vague impressions of a book I must have read as a child/teenager in the 1980s (so probably published in the UK in the 1970s or early 1980s).  It featured a man who had been technologically enhanced with special powers that he could activate only for short periods (probably because they took a lot of energy), possibly by tonguing one of his teeth.  They gave him:   Much faster reactions; everything around him slowed down. Greater strength/speed. Metal fingernails/claws. Possibly some sort of enhanced vision, too.   I think it described him engaging these powers as: He activated. or similar.  He may have been a mercenary type, who had paid a lot for them; they were rare or unique.  I don't recall any plot or other characters; it was probably a techno-action story.  (No magic, armies, warrior races, telepathy, vampires, or mutants, and I don't recall aliens or space travel.)  It may have been part of a short series of 2 or 3 books.  I'm afraid this isn't much to go on!  I'd completely forgotten about this book until recently, and my impressions are very hazy, so any of the above could be wrong.  (I remember enjoying it, though.)  I've not found anything I recognise on this site, or others; nor in lists of adult and young-person's SF for that period (so it probably wasn't a big-name author).  Does it ring any bells for anyone?


If i update ubuntu from 13.04 to 13.10,  It will delete all the installed softwares..?  It will delete any of my data..?  I'm totally new to ubuntu.


I am trying to upload a file to a folder in ASP.NET, so far I have gotten the file stream like so:  public void Upload()         {             foreach (string file in Request.Files)             {                 var fileContent = Request.Files[file];                 if (fileContent != null && fileContent.ContentLength > 0)                 {                     var stream = fileContent.InputStream;                     var fileName = fileContent.FileName;                     //you can do anything you want here                 }             }              foreach (string key in Request.Form)             {                 var value = Request.Form[key];             }         }   I just dont know how to save it....Im soooooo tired.


Section Numbering in "Convex Optimizaion" by Boyd et. al. with Koma Script

I like the way the section numbering is typeset in the book , i.e. the sections numbers are placed in the margin.  How do I achieve this style with the scrbook class from the KOMA-script package?  Partial Solution: This  seems to do the trick, but, as cgnieder points out in the comment section below, the numbers are not centered relative to each other.


Could dark energy and gravity be explained as same phenomenon?

I have watched . The idea is that gravity pulling it is just lots of mass bending space-time, and natural direction of movement becomes moving towards the mass, and since we have earth already there we get to sit on top.  This got me thinking what about lack of matter to bend space-time, could it be that space-time bends in the 'opposite' 'direction' like create a slope where everything's natural movement direction is away. Could this be used to explain dark energy's anti-gravity properties?   EDIT: Duplicate is about dark matter while this one is about dark energy that are two completely different things...


Any TEX / LATEX Tutorial Specifically Covering MikTeX & WinEdit on a Microsoft Windows PC?

For typesetting my mathematical documents, I have been using MikTeX (for the back-end compilation) and WinEdit (for front end typing), on a Windows system.   However, I often find that I need a tutorial on LATEX document preparation using MikTeX and WinEdit.   There are plenty of tutorials around, but none (of those I know of) seems to deal with MikTeX + WinEdit duo.   Any suggestions please?   Any online books or tutorials specifically on MikTeX + WinEdit?


How to go about solving this question on differentials?

A ring of a planet has an inner radius of approximately 52,000 km (measured from the center of the planet) and a radial width of 19 km. Use differentials to estimate the area of the ring. (Round your answer to the nearest thousand.)   I hate asking questions where I have nothing to contribute but I have absolutely no Idea on how to approach this question. A step by step solution to this problem which I could apply to similar problems would be greatly appreciated, thanks in advance.


I am looking for a small tactile switch that works like:  press once -> turn on, press again -> turn off  I only found this model  , but i am looking to buy directly from manufacturer/reference in mouser or digikey if possible, for a small production batch  do you know how can i find this?


where should I place conjunction in the sentence?

I have a problem with the placement of conjunctions in a sentence. (Especially when I am writing an academic article.)  In many articles, writers place the conjunctions in the middle of sentence.   For exp.; It cannot, however, be inferred from the fact that.. or  However, it cannot be inferred from the fact that...  When should I place them in the beginning of sentence/in the middle of sentence?   I am confused about it.  It is also applicable for therefore, furthermore, otherwise etc.


I've just, without much fore thought, used the word "actioned" in the following (example) context, and am now wondering if it's valid (upon a re-read I've decided I don't like the way it sounds, hence the question).     1000 emails needed some kind of action, 800 of which were actioned by the team while the remaining 200 were escalated.   I can think of (what I feel is) a better word to replace "actioned" in this case - either "processed" and "completed" should do it - and my spell checker doesn't like "actioned", so I'm wondering if the word is valid? If it is, is my above example a valid usage?


Let $f:\mathbb{R}\rightarrow \mathbb{R}$ be a differentiable function, such that $f^{\ '}\geq f$ and $f(0)=1.$ Prove $f(x)\geq e^x, \forall x\geq0$.   So I started by defining a function $g(x)=f(x)-e^x$, and my intuition tells me that $f^{\ '}\geq f$ means $f$ is increasing, but I'm not sure how to continue.  Any help appreciated.


I  am able to view the Stack Overflow site moderators by clicking on this    But when I search the same in meta.stackexchange, it does not display the site moderators.    The below message is displayed      We believe moderation starts with the community itself, so in addition   to privileges earned through reputation, we periodically hold   democratic moderator elections.      Please see A Theory of Moderation for information on our moderation   philosophy   My Questions:   Are there restrictions to view the site moderators in meta.Stackexchange? How does the above message make sense when viewing the moderators? Can someone explain this to me?