### 12 Why will Google no longer allow me to end or begin passwords with a space? [closed]

Why won't Google allow me to use a password ending in a space anymore? Backstory: I have memorized a cipher that allows me to generate a different and very strong password across many different websites and services, without using the...

### 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...

### 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...

### 4 Proper way to check convexity or concavity for a function

Duck 12/06/2018 at 20:02. 2 answers, 110 views self-study
I am working with a function I would like to check if it is convex or concave. The function is the next: $$f(x_1,x_2)= \max\{x_1^6,e^{x_1+3x_2^2},3x_1^2-x_1x_2+x_2^4-\log(x_2+2)\}$$ With $x_2>-2$ I knowusing derivatives I can check for one function but in this case I...

### 40 How to protect printers from being hacked

aMJay 12/06/2018 at 09:58. 4 answers, 6.569 views protection printers
Recently it got to my attention that someone has hacked around 50,000 printers and used them to print the message they wanted to. (link) As someone who doesn't have a lot of knowledge about networks or hacking, what would be...

### 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...

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

user23860 12/04/2018. 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...

### 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}...

### 1 Would moving Earth around solve the rise in global temperature problem? [duplicate]

balajisoundar 11/25/2018. 4 answers, 426 views climate climate-change
This question already has an answer here: Increasing Earth's orbital radius to stop global warming 4 answers Without worrying about the other issues of global warming like rise in CO$_2$ level, hole in ozone..etc, lets assume that we're facing...

### 9 What is the correct term for the list that initializes the data members?

gsamaras 11/23/2018. 3 answers, 804 views c++ class oop initialization terminology
One colleague says initializer list, another initialization list. One SO answer says initializer list, another initialization list. Which is the correct* terminology? PS: They all talk about data member initializer/ation lists. *If correct is ambiguous to you, you can...

### 4 Cannot change the environment variable

Riccardo Persiani 11/22/2018. 1 answers, 273 views osx zsh environment-variables
WHAT I AM USING zsh MacOS Mojave 14.10 WHAT I WANT TO DO $echo$USERNAME myusername $export USERNAME=newvalue$ echo $USERNAME newvalue WHAT IS HAPPENING$ echo $USERNAME myusername$ export USERNAME=newvalue $echo$USERNAME myusername WHAT I...

### 47 Does changing the encryption password imply rewriting all the data?

Basj 11/22/2018. 2 answers, 4.509 views windows encryption bitlocker disk-encryption
Let's say I have 1 TB of data on a partition encrypted with BitLocker, TrueCrypt or VeraCrypt. Does changing the encryption password imply rewriting all the data (i.e., will it take hours/days)?

### 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...

### 4 What gas can I use to incapacitate pesky heroes?

kingledion 11/16/2018. 8 answers, 2.397 views science-based gas poisons
Supposing I have a room currently occupied by Jedi Knights, or some other force that I can't defeat with battle droids and brute strength. I wish to incapacitate the occupants of this room with a gas, which I will pump...

### 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.

### 78 Why is the consensus that WW2 started on September 1, 1939 and not July 7, 1937?

Matas Vaitkevicius 11/08/2018. 7 answers, 26.142 views world-war-two europe asia sino-japanese-war
Looking at Wikipedia, dates given are 1 September 1939 – 2 September 1945, which end in the defeat of Japan. However why is the starting date when Germany invaded Poland and not when the Japanese invaded China in the Sino-Japanese...

### 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...

### 15 Why do the Ironborn build ships instead of stealing them?

KyloRen 11/08/2018. 3 answers, 6.286 views game-of-thrones a-song-of-ice-and-fire
According to their mantra, The Ironborn (specifically the Greyjoy's) words are as follows, We do not sow! We are Iron-born! We are not subjects! We are not slaves! We do not plow the fields or toil in the mines! We...

### 2 What was the cause of the cooling system issue in Sputnik 2?

I've heard that there was a problem in the cooling system on sputnik 2. But, was it an engineering error? Obviously a dog cannot survive such harsh conditions. Did the engineering team overlook this issue?

### 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)...

### 8 How would one “Encrypt” a message using a Bitcoin *public key* and use its private key to decrypt it?

Patoshi パトシ 11/02/2018. 3 answers, 987 views private-key public-key encryption
I have the following text string: This is a test message. Using my bitcoin public key (bitcoin address?), how can I encrypt this message? How would I decrypt the message using a bitcoin private key?

### 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...

### 6 “Arclength” parameterization of a surface

Scott 10/29/2018. 1 answers, 315 views manifolds parametric
Given an arbitrary parameterization of a differentiable curve $r: R\rightarrow R^n$ in terms of some variable $t$, we can re-parameterize (although perhaps not in closed-form) $r$ in terms of its arclength $s$. This gives a handy representation where as $s$...

### 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? $$0 = \emptyset$$ $$n+1 = \{ n \}$$

### 66 The first McDonald's restaurant on Mars

Philipp 10/29/2018. 11 answers, 11.649 views economy food mars infrastructure
The McDonald's fast food company is the world's largest restaurant chain which prides itself with offering (almost) the same standardized menu all around the globe... ...this globe. When humanity colonizes Mars, how large would the population of the colony need...

### 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...

### 2 What is purpose of ALLOW_CONNECTIONS being set so no one can connect to the new Postgres database?

Basil Bourque 10/28/2018. 2 answers, 177 views postgresql configuration connections
In Postgres 11, the CREATE DATABASE command that makes a new catalog has an option ALLOW_CONNECTIONS. The documentation says this option can be used to block all connections to the database: [ ALLOW_CONNECTIONS [=] allowconn ] allowconn If false then...

### 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.

### 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...

### 5 Why are my photos of the moon blurry? [duplicate]

yazz 10/17/2018. 4 answers, 1.857 views dslr moon nikon-d750
This question already has an answer here: How can I achieve more clarity in my photos of the moon? 2 answers How do I set the proper exposure for nighttime moon photos? 20 answers I have a Nikon D750...

### 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?

### -1 Explain how JavaScript converts type implicitly when both types are not equal? [duplicate]

This question already has an answer here: How do the JavaScript relational comparison operators coerce types? 1 answer Does right side of operator is forced to convert to type on left? number == string -> number == number Are...

### 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...

### 24 Does the beholder's charm ray really take a PC out of the fight like this?

Foffos 10/15/2018. 3 answers, 3.690 views dnd-5e monsters conditions charmed
I was reading the Beholder's statblock (MM, page 28): Eye Rays. The beholder shoots three of the following magical eye rays at random (reroll duplicates), choosing one to three targets it can see within 120 feet of it: Charm Ray....

### 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

### 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...

### 4 Changing from 100% research to 20% teaching and 80% research: Seems like a raw deal, would you do it? [closed]

HCAI 10/11/2018. 2 answers, 927 views teaching postdocs salary contract
I'm a named researcher (but basically a Postdoc) on a funded project in the UK which pays my salary. I've got a good CV and currently do 4 hours of teaching per year. The principal investigator (PI) has asked if...

### 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...