### 5 Can high pings cause slow web browsing? [on hold]

user971251 12/09/2018 at 01:00. 4 answers, 486 views networking wireless-networking internet ping
Lately my internet connection is having an issue of slow browsing. Download speed is perfectly fine. According to my internet provider, everything is fine with the connection. I just tried doing a ping test to some of the sites I...

### -3 How do I delete a directory in Centos 7 [duplicate]

John 12/08/2018 at 03:30. 3 answers, 0 views linux centos delete
This question already has an answer here: How do I remove a directory and all its contents? 2 answers I am using Centos as my server OS and in my desktop I have a directory called "john", I need...

### 101 What is your preferred style for naming variables in R? [closed]

medriscoll 12/07/2018 at 14:14. 8 answers, 0 views r coding-style naming-conventions
Which conventions for naming variables and functions do you favor in R code? As far as I can tell, there are several different conventions, all of which coexist in cacophonous harmony: 1. Use of period separator, e.g. stock.prices <- c(12.01,...

### 6 Statistical mechanical perspective of entropy in this computer simulation

Brian Yeh 12/07/2018 at 08:47. 5 answers, 587 views gravity entropy
I've scoured the internet for a clear answer on entropy and I see contradictory answers everywhere so I'm going to refine my question here. Please read carefully as the question is not as it seems at first. The formation of...

### 24 Code Billiards (Levenshtein golf)

Arcturus 12/06/2018 at 23:04. 4 answers, 0 views code-golf math number multiple-holes
You must use one language to write programs that perform the following nine tasks, in any order you want. Convert an inputted number from base 10 to base 36. Sample input: 1000 Sample output: RS (output must be upper case)...

### 6 Are garbage moons possible?

The civilization in question here has colonized the solar system. They have established settlements on most solid planets. Of course, a space-faring people generates plenty of trash, but they have a few ideas. Is it possible for this trash to...

### 80 Why is <= slower than < in V8?

Leonardo Physh 12/06/2018 at 02:59. 4 answers, 9.029 views javascript v8
I am reading the slides Breaking the Javascript Speed Limit with V8, and there is an example like the code below. I cannot figure out why <= is slower than < in this case, can anybody explain that? Any comments...

### 1 How do I create a custom partial / template?

Edmund 12/05/2018 at 21:33. 2 answers, 30 views theme-development templates

### 4 Area of a triangle inside an ellipse

RA FI 12/04/2018 at 05:49. 3 answers, 539 views calculus triangle conic-sections area
$F_1$, $F_2$ are are foci of the ellipse $\dfrac{x^2}{9}+\dfrac{y^2}{4}=1$. $P$ is a point on the ellipse such that $|PF_1|:|PF_2|=2:1\;$, then how could I figure out of the area of $∆PF_1F_2$? As we know $c^2=a^2-b^2=9-4=5$, $$∴c=\pm \sqrt5$$ So the epicenter of...

### 19 Is there any specific law outlawing private nuclear weapons?

user23860 12/04/2018 at 02:04. 8 answers, 11.014 views weapons
I am not asking about any indirect or circumstantial restriction. Is there any law in any country preventing me from owning a nuclear weapon there? Is it a plutonium license or something specific to nuclear weapons?

### 5 Teleportation - Keeping momentum on arrival

Ted Pwyll 11/29/2018. 4 answers, 698 views physics teleportation
Warning This question is the first of a series about specific use of teleportation. It will concern only about momemtum and speed: other subjects will be exposed later. Context The story happens in our world and current era. The protagonist...

### 4 Ways to power an Arduino from 24 VDC

I want to power an Arduino (Wemos D1 Mini) with 5 or 3.3 V from my garage door opener, which has 24 VDC available. As far as I understand, this can be solved in the following ways: Step down buck...

### 48 Do I need to convey to foreign recruiters that the education I received from a Catholic university was in no way religious?

Streltsov 11/26/2018. 7 answers, 12.494 views resume education france
I am french and attended a private university in France for my college education. I currently have a Masters in Computer Science from this university and also worked there for two years as an adjunct lecturer after my degree. I...

### 3 How to add a description after each column at the bottom?

Peter 11/26/2018. 3 answers, 64 views graphics subfloats
I want to add a description "column a" for the first column, "column b" for the second column, "column c" for the third column. How to do that? \documentclass{article} \begin{document} \begin{figure}[h!] \includegraphics[width=0.32\textwidth]{example-image-a} \includegraphics[width=0.32\textwidth]{example-image-b} \includegraphics[width=0.32\textwidth]{example-image-c} \includegraphics[width=0.32\textwidth]{example-image-a} \includegraphics[width=0.32\textwidth]{example-image-b} \includegraphics[width=0.32\textwidth]{example-image-c} \includegraphics[width=0.32\textwidth]{example-image-a} \includegraphics[width=0.32\textwidth]{example-image-b} \includegraphics[width=0.32\textwidth]{example-image-c}...

### 11 Squares for answer choice options and perfect alignment to mathematical answers

Sebastiano 11/25/2018. 3 answers, 622 views math-mode align boxes
Since 2005, I have generally used this model to create multiple-choice tests for my students. I kindly ask you if there are packages or macros, or particular strategies to have squares with the letters A, B, C, D inside. I...

### 4 Representing independent rediscoveries of a result in a survey paper

Asdf 11/24/2018. 1 answers, 194 views citations review-articles
How to deal with multiple rediscoveries of the same result in a survey paper? The authors are seemingly unaware of each other. The first discovery is more than a decade old, yet people keep reproducing it. Do I only mention...

### 13 What conditions would make having them sunken into the ground the predominant way of building large structures?

dot_Sp0T 11/21/2018. 13 answers, 4.232 views geology engineering
As he neared the outskirts of the city the canyons of multi-storey buildings lined with coffee- and tea-houses gave way to the large squat shapes of factories, storage-halls and other industry. If it weren’t for the ramps leading below...

### python, tkinter, how to destroy labels in two different tabs with for loop?

fishtang 11/18/2018. 1 answers, 32 views python-3.x tkinter tabs label destroy
Thanks to @Miraj50 that helped me with the .destroy() tkinter: how to write a for loop to destroy a list of labels? For the next stage, I am trying to destroy the labels in both tabs. I knew how to...

### 5 How do you connect a PC to a mobile network?

DaMaxContent 11/16/2018. 2 answers, 1.096 views wireless-networking
Using a SIM card, and a SIM card reader, what other equipment do you need to connect a computer that doesn't have support for cellular connectivity to a cellular network? My understanding of SIM cards and mobile networks is that...

### 16 Largest and Smallest Possible Number

Vedant Kandoi 11/15/2018. 10 answers, 2.191 views code-golf
Task Given an array of non-negative numbers, output the largest and smallest possible number that can be formed by joining them. Rules Input,Output can be in any convenient format. The array may have at most 1 decimal number. Examples input:[22,33,44,55.55,33]...

### 10 What is this articulation mark that looks like a short upside-down slur?

C. B. 11/15/2018. 2 answers, 981 views notation jazz articulation
From Jamey Aebersold's "Cantaloupe Island," Maiden Voyage, vol. 54.

### 46 My kid's first story

Ali_Habeeb 11/08/2018. 10 answers, 8.621 views creative-writing children young-author
So, my 11-year son has just written his first literature work yesterday: A short fantasy story about werewolves in a forest chased by a group of courageous men. Half-full of mistakes of all kinds, still it seems that he is...

### 10 Aliens performing successful medical procedure on humans at first contact?

Tanzanite Dragoness 11/04/2018. 10 answers, 3.149 views aliens xenobiology medicine
So, humans have finally figured out how to build a solar-system crossing ship. On the way to the first exo-planet to be colonized, an accident happens, and a few people wind up floating through space, injured. Aliens find the person(s)...

### 4 Simplifying repetitive drawings

Hany 11/02/2018. 2 answers, 303 views tikz-pgf
How to use \foreach to simplify the following code. I intentionally used tikzpictures without spaces between end and begin commands to display the graphs beside each other. \documentclass{beamer} \beamertemplatenavigationsymbolsempty \usepackage{tikz} \usepackage{pgfplots} \begin{document} \begin{frame}[t] \frametitle{} \begin{tikzpicture}[scale=.9, transform shape,linecolor/.style={ultra thick, green!40!black}] \pgfmathsetmacro{\incrmnt}{.4}...

### 130 Should I simply ignore it if authors assume that I'm male in their response to my review of their article?

Rebecca J. Stones 11/02/2018. 22 answers, 33.249 views peer-review gender
I received a response about a manuscript I reviewed earlier, and the authors write about the reviewer (i.e., me) and his concerns. As a woman, I'm not so keen on this. Obviously this isn't intentionally insulting or anything like that---it's...

### 36 Is it possible to make a ROM converter?

Jack Kasbrack 11/01/2018. 5 answers, 4.011 views emulation nes compilers turbografx-16
Based on my understanding, an emulator is necessary because the machine with the emulator on it (say Windows), doesn't execute the same machine code as the target platform (6502, for example). So what an emulator does is it interprets the...

### 2 Are there any 100% renewable energy aircraft in development?

Cloud 10/30/2018. 3 answers, 1.133 views fuel fuel-systems
There seem to be several options for aircraft R&D regarding cleaner fuels for the time when fossil fuels are no longer economically viable. Some of these include: Algae. A drop-in fuel. These fuels are being used and developed in co-operation...

### 8 Tikz Mechanical picture Fix issues

iacopo 10/29/2018. 2 answers, 239 views tikz-pgf
This is my code: \documentclass{standalone} \usepackage{tikz} \usetikzlibrary{calc,patterns,decorations.pathmorphing,decorations.markings,positioning} \begin{document} \tikzset{spring/.style={thick,decorate,decoration={zigzag,pre length=0.3cm,post length=0.3cm,segment length=6}}, short spring/.style={thick,decorate,decoration={zigzag,pre length=0.05cm,post length=0.05cm,segment length=6}}, damper/.style={thick,decoration={markings, mark connection node=dmp, mark=at position 0.5 with { \node (dmp) [thick,inner sep=0pt,transform shape,rotate=-90,minimum width=15pt,minimum height=3pt,draw=none] {}; \draw [thick] ($(dmp.north east)+(2pt,0)$) -- (dmp.south...

### 25 English equivalent for Polish phrase meaning doing something fast and poor quality [closed]

The meaning of Polish 'doing something on knees' or 'on a knee' is completely different than English: https://www.macmillandictionary.com/dictionary/british/on-your-knees It is rather a metaphor to a student who instead of doing his homework properly at the home, he did it in...

### 7 Why do we use von Neumann ordinals and not Zermelo ordinals?

Maicake 10/29/2018. 3 answers, 1.177 views set-theory
Why do we use von Neumann ordinals, $$0 = \emptyset$$ $$n+1 = n \cup \{n\}$$ and not Zermelo ordinals? $$0 = \emptyset$$ $$n+1 = \{ n \}$$

### 51 Examples of harmless mistakes (on purpose) in submitted papers [closed]

Some paper reviewers feel the pressure to criticize something in order to appear competent. Sometimes they feel this pressure due to huge blank form fields for criticism in the reviewing system. As a consequence, they sometimes criticize wrongfully. Fully recovering...

### 20 Puzzling quotes from astronauts about earth size

Lambda 10/28/2018. 6 answers, 6.945 views the-moon observational-astronomy moonlanding
I have no doubt that we have been to the moon. This question has nothing to do with a moon landing hoax. But, there are two quotes from two different astronauts regarding the size of the earth as viewed from...

### 4 Losing Knowledge

Is it plausible to create a world in which the people who live inside it developed technologies like the ones we had in WW2, but after their progress came to a halt they forgot their knowledge. Meaning that they still...

### 9 How can I know if two lenses have interchangeable elements?

This simple question might have a not so simple answer, and I want to ask it about a single lense, but assume that would be off topic, because I'd basically be asking 'should I buy this to repair my other...

### 49 Is it true that bananas are radioactive?

Is it true that bananas are radioactive, and if you eat too many it can kill you? If yes then how many bananas are good to eat at once.

### 1 What is the FakeItEasy equivalent of the Moq VerifyNoOtherCalls() method

TheCrimsonSpace 10/26/2018. 1 answers, 53 views c# moq fakeiteasy
I'm currently a Moq user and I'm researching other mocking frameworks. When unit testing I frequently call _mock.VerifyNoOtherCalls() so I can be certain there are no unexpected interactions beyond the ones that I have already verified. I've searched the FakeItEasy...

### 6 What does “That was like three seconds” mean?

helen 10/22/2018. 6 answers, 4.289 views meaning-in-context spoken-english
I was watching the movie "Eternal sunshine of the spotless mind" when I heard the phrase "That was like three seconds" from Kate Winslet. You can find this phrase at 01:14:25. She and Jim Carrey were kidding and playing. She...

### 23 How much alteration would be needed for the Cuban Missile Crisis to go nuclear? [closed]

Robert Paul 10/20/2018. 7 answers, 5.497 views warfare alternate-history nuclear
My story takes place centuries in the future, in the year 2567. Over 600 years ago, during 1962, an all out nuclear war broke out. Most modern day historians believe it to have occurred in autumn, but whatever happened, it...

### 17 Searching with mandatory filters

feelerino 10/19/2018. 8 answers, 1.596 views search filter default
I'm having trouble designing a search box with two mandatory filters/categories before the user hit the "go" button. So far, the best solution I could come up with was this one: I've presented the following solution to my client, but...

### -1 Best use of checkbox and question formulation

astalabandi 10/19/2018. 2 answers, 41 views usability user-expectation
These two forms yield the same result in my database. Which one of these two "setups" would you consider the most elegant and/or correct way of asking whether people would like to be contacted by SMS or not, and why...?...

### 4 What happened to TituRel?

auxi 10/19/2018. 2 answers, 508 views mathematical-software
TituRel is a language developed in conjunction with the book Relational Mathematics by Gunther Schmidt from Universität der Bundeswehr München. My problem is that I can't find any info related to downloading this software. Do you know where the TituRel...

### 2 Exhibit a reduced residue system mod 7 composed entirely of powers of 3

By trial, I configured that $3,3^2,3^3,3^4,3^5,3^6$ is a reduced residue system composed entirely of powers of $3$. However, why this is happening? Is it true for all relatively prime numbers, though?

### 23 Can't stream std::endl with overloaded operator<<() for std::variant

Dev Null 10/17/2018. 3 answers, 980 views c++ c++17 variant
This answer describes how to stream a standalone std::variant. However, it doesn't seem to work when std::variant is stored in a std::unordered_map. The following example: #include <iostream> #include <string> #include <variant> #include <complex> #include <unordered_map> // https://stackoverflow.com/a/46893057/8414561 template<typename... Ts> std::ostream&...

### 2 BASH: calculate number of days to account expiration

DavDav 10/16/2018. 2 answers, 339 views bash date accounts
Objective: Output from Linux username, passwordlastchanged, passwordexpires in human readable format. I pulled user info from /etc/passwd and /etc/shadow for users with shell /bin/bash join -1 1 -2 1 -t : /etc/passwd /etc/shadow |grep bin/bash|awk -F\: '{print $1";"$9";$14}' where$1...

### 7 Python 2d array boolean reduction

DnRng 10/15/2018. 5 answers, 371 views python arrays reduction
I've got a 2D array comprised of boolean values (True,False). I'd like to consolidate the array to a 1D based on a logical function of the contents. e.g. Input: [[True, True, False], [False, False, False], [True, True, True]] Output (logical...

### 1 How to get decimal value of weight in mini cart?

trilok kumar 10/15/2018. 3 answers, 193 views magento2 magento-2.1.7 mini-cart
How to get decimal value of weight in mini cart. I need to display only 2 decimals 11.00 instead of 11.0000

### 4 Pass variable to spawn [duplicate]

Dev 10/13/2018. 1 answers, 120 views shell scripting expect
This question already has an answer here: spawn - command not found! 3 answers I want to pass server name which is listed in a file (servers_list) as variable to spawn command which is in another script (user_create_script). Purpose...

### 93 Just started a postdoc, but it went REALLY bad, REALLY fast. Stay or go?

FEN88 10/12/2018. 14 answers, 27.720 views postdocs quitting
I just started my 2-yr postdoc, but things have gone sour really fast. So, I really need some career advice as to what to do. Over several months, I did the interviews with the supervisor and the lab and things...

### 1 docker build failed : Not able to set the environment variables

user2301 10/11/2018. 1 answers, 41 views c++ qt docker visual-c++ qt5
I am trying to build a QT application using docker. I have visual studio 2015 build tools and QT 5.11.2 as base docker image. When I try to docker build QT application, I get this error. C:\Qt\5.11.2\msvc2015_64\include\QtCore/qglobal.h(45): fatal error C1083:...

### 17 Car prices haven't changed in 20 years, no inflation?

Lassie Fair 10/11/2018. 9 answers, 8.959 views inflation price united-states manufacturing
I notice that there seems to be little or no change in car prices over the last 20 years and they seem to be unaffected by inflation. For example, a Toyota Camry sold for about \$23,000 +/- \$2,000 (MSRP) around...