### 4 Training a CNN from scratch over COCO dataset

I am using Tensorflow Object Detection API for training a CNN from scratch on COCO dataset. I need to use this specific configuration. There is no pre-trained model on COCO with that configuration and this is the reason why I...

### 35 Co-authors on a study have cut communication, what can be done?

DrBwts 08/13/2018. 4 answers, 5.269 views publications
During my first post-doc one of the primary researchers just dropped all communications. The upshot is that I have 3 years worth of research that I cant publish without his consent. He was initially keen to publish but when pressed...

### 13 Can I go out of the airport during a connecting intra-Schengen flight when I have a single-entry visa?

Sanya Singh 08/13/2018. 2 answers, 3.485 views schengen spain tourist-visas
I have a return flight to India from Madrid, with a two-day layover in Amsterdam. I have got a single-entry visa. So when I leave Madrid, they will do the immigration checks and they might stamp on the passport that...

### 3 The acceleration of circulation motion

Nobody recognizeable 08/12/2018. 2 answers, 178 views kinematics vectors differentiation
We know that in circular motion the position vector is $r\hat{r}$. Then the velocity is the time derivative of it. So it gives $$dv/dt = r d\hat{r}/dt + \frac{dr}{dt} .\hat{r}.$$ now I can't understand why $dr/dt$ isn't zero. The $r$...

### 38 Should a mathematical proof be 'convincing'?

Stephen 08/11/2018. 8 answers, 4.483 views proof-writing philosophy formal-proofs
I just read a description of what is a mathematical proof in my mathematical logic textbook, and I'm a bit puzzled by it. It goes like this: A mathematical proof is a finite sequence of mathematical assertions which forms a...

### 15 Use sleep with minutes and seconds

fixit7 08/11/2018. 4 answers, 1.459 views command-line coreutils
I know how to use sleep 5m for 5 minutes. How would I use it for say 7 mins 30 seconds?

### Theory: Murder in neutral waters by person without citizenship?

chupvl 08/11/2018. 1 answers, 81 views criminal-law jurisdiction citizenship maritime
Theoretical question: Murder in neutral waters by person without citizenship? Will person be prosecuted? What if victim is also a person without citizenship?

### Meaning of 'survey' in this context?

Arham 08/11/2018. 0 answers, 26 views meaning meaning-in-context british-english
Can the word 'view' be a good synonym for 'survey' in the following context? A man does right, as a rule, to have his thoughts more occupied with the interests of his own nation than with those of others, because...

I regularly log in to boxen via SSH, and run update and so forth as root, using sudo. I appreciate that sudo asks for password after a certain time, in case I walk away from terminals or such. But as...

### 8 Rolling shutter effect

Mateusz Sowiński 08/10/2018. 1 answers, 928 views modifiers camera effects
Is it possible to create an artificial shutter effect in blender to render something like this?

### 1 Building multiple CON statements with OR/AND in ArcGIS Raster Calculator?

I have two raster "T" and "N" which have values ranging from 0 to 1000. This is the logic that I want to query and create the new raster: This is how I tried to query in a syntax-correct way...

### past tense or present perfect or present perfect continuous?

Gem Bùi 08/09/2018. 1 answers, 17 views tense
What should I say between these sentences? (1) I have eaten three bowls of noodles this morning. Or (2) I have been eating three bowls of noodles this morning. Or (3) I ate three bowls of noodles this morning. I...

### What are the rights of the client when buying online and receiving a broken product?

Hatsumi 08/08/2018. 1 answers, 33 views online brazil
I live in Brazil and I bought an electronic product online and it came broken. I contact the guaranty, but they said that the guaranty is not valid, because the product is broken. The store that sold me the product...

### 10 Why are some material nodes connected to themselves?

Nam-Quang Tran 08/08/2018. 1 answers, 618 views materials nodes
Here's a small thing I've been wondering about for a while: Occasionally, when I import models from other sources (e.g. 3ds Max -> FBX -> Blender), I see in the Node Editor some nodes which are apparently connected to themselves....

### 37 Drinking habits riddle: the village is $90$%$+80$%$+70$%$+60$%$= 300$ % saturated with liquids

Daniel 08/07/2018. 6 answers, 4.258 views combinatorics algebra-precalculus puzzle
In a small village $90\%$ of the people drink Tea, $80\%$ Coffee, $70\%$ Whiskey and $60\%$ Gin. Nobody drinks all four beverages. What percentage of people of this village drinks alcohol? I got this riddle from a relative and...

### 31 Alitalia changed my itinerary, leaving me with an impossibly short 45min connection time at FCO

Arpit Bajpai 08/06/2018. 6 answers, 7.778 views layovers short-connections fco alitalia
I recently booked a flight from Munich to Delhi via Rome. The layover in Rome was around 2.5 hours when I booked the flight, which is good enough for a change, considering I have to go through security and passport...

### 55 Advantages of pass-by-value and std::move over pass-by-reference

Blackbot 08/06/2018. 4 answers, 3.744 views c++
I'm learning C++ at the moment and try avoid picking up bad habits. From what I understand, clang-tidy contains many "best practices" and I try to stick to them as best as possible (even though I don't necessarily understand why...

### 26 Most Common Multiple

Jo King 08/06/2018. 27 answers, 2.870 views code-golf array-manipulation
Not to be confused with Least Common Multiple. Given a list of positive integers with more than one element, return the most common product of two elements in the array. For example, the MCM of the list [2,3,4,5,6] is 12,...

### 11 Should I publish a linear programming method despite my advisor's advice? [closed]

Durkee 08/05/2018. 5 answers, 2.024 views publications publishability
TL;DR: I developed a way of solving systems of equations which is up to 25,000x faster than base methods. I want to publish but my advisor doesn't think it's worth it. I work as a data scientist with hyperspectral data....

### 2 Diffrence between “wr” and “copy running config to startup config”

R1w 08/05/2018. 1 answers, 871 views cisco cisco-commands
For saving configuration in Cisco devices we have "wr" and "copy running config to startup config" i am curious what is difference between these two command.

### 4 Equalities using FullSimplify?

Isa 08/05/2018. 1 answers, 132 views equation-solving simplifying-expressions
How can I know if $(-2 + a (1 + i))/(a - 1), a=(-2 i (z - 1))/((z - i) (1 + i))$ is equal to $(1+i)(1-z)$? I tried FullSimplify$[(-2 + a (1 + i))/(a - 1)]$ and I got...

### 6 \mathbb not working in \underset

data 08/04/2018. 2 answers, 286 views amsmath mathtools amssymb
I'm trying to put \mathbb{R} in an \underset of \sup in the following way: \underset{x \in \mathbb{R}}{\sup} However this sequence does not render as usual. I use following libraries: \usepackage{amssymb,amsmath, amsthm} \usepackage{enumitem} \usepackage{microtype} \usepackage{idxlayout} \usepackage{amssymb} \usepackage{lmodern} \usepackage{amsmath} \usepackage{float} \usepackage{amsthm} \usepackage{flexisym}...

### 1 Substitute an insert-mode input immediately

Maëlan 08/04/2018. 3 answers, 50 views key-bindings insert-mode abbreviations
I would like to type begin! in insert mode and having it immediately replaced by: begin [cursor here] end I considered mappings: :inoremap begin! begin end<Left><Left><Left><Left> and abbreviations: :iabbrev begin! begin end<Left><Left><Left><Left> But both have caveats. (1) The mapping functionally...

### 1 What 'objective' means in following sentence?

ubi hatt 08/04/2018. 2 answers, 32 views meaning-in-context word-meaning
"Dhrisrashtra is the very image of ignorance; and Sanjaya is the embodiment of self-restraint. Ignorance lurks at the core of the objective, the outward-looking", mind. With his mind enveloped in darkness, Dhrisrashtra is blind since birth, but he sees...

### 2 Across vs athwart

Ahmed 08/03/2018. 2 answers, 103 views differences prepositions
athwart PREPOSITION From side to side of; across. ‘a counter was placed athwart the entrance’. Isn't it grammatical if I say across rather than athwart, as in: ‘a counter was placed across the entrance’. Please make me understand, if I...

### Limiting recursive 'aws s3 ls' searches by number of items in the folder

Sidereal 08/03/2018. 1 answers, 261 views ls recursive aws amazon-s3
Here's the scenario: I need to recursively search through tons and tons of folders and subfolders and spit out the results to a log file using the ls command, BUT, I need to stop searching a folder if it has...

### 31 Dr. ‹First Name›: a good nickname or a “professional cancer”?

Is the informal Dr. ‹first name› something a starting academic should avoid? As my father was Dr. ‹my last name›, I have, since receiving my PhD, cultivated Dr. ‹my first name›. A senior colleague recently advised me to stop: she...

### 13 Relationship with a friend's ex-girlfriend

Orime Tsovo 08/03/2018. 2 answers, 4.501 views relationships friend-groups
Background I was working for a big company and I felt bad about the work I was doing. A friend (let's call him Tony) from my school (I am recently graduated) offered me a good position in his company. He...

### Split resizing with mouse not working after upgrade from ubuntu 16.04 to 18

ivan 08/03/2018. 1 answers, 56 views split mouse
I use to be able to resize my vim splits using the mouse in the terminal by clicking on the borders and dragging. Now I can't. How can I make it work again? edit: still works in gvim but doesn't...

### 6 Level sums, displacements: how to determine their effect efficiently?

H A Helfgott 08/03/2018. 0 answers, 33 views complexity-theory sorting number-theory
Let $R =\mathbb{Z}/N \mathbb{Z}$. Let $f:R\to \mathbb{R}$, $\rho:R\to \lbrack 0,1\rbrack$. We assume that it takes trivial time to compute any given value $f(m)$ or $\rho(m)$. Define $$S(\delta,m) = \sum_{n\in R: \rho(n)\geq \delta} f(n+m).$$ Is it possible to compute $S(\delta,m)$ efficiently?...

### 16 How can an *increase* in atmospheric temperature cause an *increase* in the atmospheric mass density?

Tom Spilker 08/02/2018. 3 answers, 1.518 views atmosphere atmospheric-drag
We often hear that heating Earth's atmosphere from solar activity or CMEs increases the mass density of the atmosphere at a given altitude, causing orbiting spacecraft to lose altitude faster from increased drag. Most space fans are familiar with the...

### Need to pass Field api name and its value in API call using field set [closed]

Harish 08/02/2018. 2 answers, 161 views apex rest-api fieldsets
Need to make the requested body for Rest POST call in which key(API name) and value both go dynamically in JSON format. API name comes from field set and its value come from the database using query. How i create...

### Appium + Java + Android + iOS : java.lang.NoSuchMethodError: com.google.common.base.Throwables.throwIfUnchecked(Ljava/lang/Throwable;)V

NarendraC 08/02/2018. 1 answers, 174 views automated-testing java appium mobile-automation
Question: How to fix : java.lang.NoSuchMethodError: com.google.common.base.Throwables.throwIfUnchecked(Ljava/lang/Throwable;)Vmethods. More info: I observed this error for android as well as iOS platform. java.lang.NoSuchMethodError: com.google.common.base.Throwables.throwIfUnchecked(Ljava/lang/Throwable;)V at io.appium.java_client.remote.AppiumCommandExecutor.execute(AppiumCommandExecutor.java:245) at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:548) at io.appium.java_client.DefaultGenericMobileDriver.execute(DefaultGenericMobileDriver.java:42) at io.appium.java_client.AppiumDriver.execute(AppiumDriver.java:1) at io.appium.java_client.android.AndroidDriver.execute(AndroidDriver.java:1) at org.openqa.selenium.remote.RemoteWebDriver.startSession(RemoteWebDriver.java:212) at org.openqa.selenium.remote.RemoteWebDriver.(RemoteWebDriver.java:130) at io.appium.java_client.DefaultGenericMobileDriver.(DefaultGenericMobileDriver.java:38) at io.appium.java_client.AppiumDriver.(AppiumDriver.java:84)...

### 17 In combinatorics, why is asking the opposite problem often times easier? [closed]

user89 08/02/2018. 5 answers, 2.798 views combinatorics
Consider the birthday problem. Given $N$ people, how many ways are there for there to exist some pair of people with the same birthday? Enumerating the possibilities quickly becomes tedious However, the complement problem (Given $N$ people, how many ways...

### 14 Story about criminal being “adjusted” which stops a man's commute

Bob Jarvis 08/01/2018. 1 answers, 2.320 views story-identification books
I'm trying to remember the name of a story, I think the author was Larry Niven, but it might possibly be from Heinlein's "Future History" series (but a check of the stories included in the Future History indicates it's not...

### 3 I May Have Horns, But I Am Not the Devil

user477343 08/01/2018. 1 answers, 158 views riddle wordplay rhyme knowledge language
A big credit to @frodoskywalker for my riddle. Although the user did not write this riddle, one of their answers on this site served an inspiration. I will not show the particular answer, however, in order to not spoil the...

### 15 Are there any aircraft with powered landing gear?

Steve V. 08/01/2018. 1 answers, 1.771 views aircraft-design landing-gear taxiing
My student asked me a question this morning. It was: A car drives by turning its wheels against the Earth. An airplane taxis by rolling on its wheels while the engines push against the air. Are there any airplanes that...

### 9 Alternative methods of initializing floats to '+inf', '-inf' and 'nan'

Andrej Kesely 08/01/2018. 5 answers, 732 views python python-3.x
To initialize float constants to +inf, -inf, nan I always use float() called with a string: print(float('inf'), float('+inf'), float('-inf'), float('nan')) This prints: [inf, inf, -inf, nan] 1.) Does there exist in Python an alternative method of initializing these constants (not...

### 3 Iterate over a dynamically populated list of objects

Arthlete 08/01/2018. 2 answers, 218 views apex dynamic-soql typecast
I have a SOQL query where I don't know the FROM object, meaning it can change every time. So I dynamically populate it like so // dynamicObject is a String. String queryString = 'SELECT ' + ' Id, Name '...

### 7 How to make sure apps remain available after upgrading macOS?

I want to upgrade macOS on my father's Mac, as it's quite out of date (currently running Mac OS X 10.6.8). I understand how to back up files before upgrading, but what about apps? For example, he uses Matlab and...

### 1 Right process for making a module that uses Web Sockets for the server and browser?

I'm looking at maintaining rxjs-websockets. The module uses Typescript, as does my project. Previously, the types were not inline with ws, the WebSocket implementation for node; so, I've patched that module to be work with the types that ws uses...

### 4 Remove duplicate characters in a string

coder 07/31/2018. 2 answers, 499 views c++ programming-challenge interview-questions
This is a question from the book "Cracking the Coding Interview". Design an algorithm and write code to remove the duplicate characters in a string without using any additional buffer NOTE: One or two additional variables are fine An extra...

### 5 What is a 'parmigiano pearl'?

I've read the following dish description in a wedding buffet menu: Truffle essence potato soup with parmigiano pearl I can't seem to find any relevant results using Google Search.

### 9 Using shell variables for command options

Florian Brucker 07/30/2018. 2 answers, 1.852 views bash variable
In a Bash script, I'm trying to store the options I'm using for rsync in a separate variable. This works fine for simple options (like --recursive), but I'm running into problems with --exclude='.*': $find source source source/.bar source/foo$...

### 37 How do I remove a destroyed lug nut?

Victoria Dixon 07/30/2018. 9 answers, 14.507 views stuck-bolt lug-nut
A neighbor friend of mine offered to change my brakes on my Pontiac Torrent, well my husband had the proper tool to remove the lug nuts off my car in his truck, and the neighbor along with some other helpful...

### 2 UK Foundation Licence holder use of kits

AndyW 07/30/2018. 0 answers, 50 views legal united-kingdom
The terms of the foundation licence allow for use of Commercial radios and kits that conform to IR2028. IR2028 basically says that the kits must operate within amateur bands . I cannot find any kit that conforms to IR2028. Could...

### 3 Confirm if sub-query is selective?

Krishna 07/30/2018. 1 answers, 71 views trigger soql before-trigger
I have a query in a before-update trigger that looks like following: [SELECT Id,(SELECT Id,Active_opp__c FROM Opportunities ORDER BY Days_from_Last_Stage__c ASC) FROM Account WHERE Id IN: conAccMap.values()] I have checked this in query plan and it looks like : Is...

### 4 Minimize emacs on Windows with Meta-Space, n?

MikeTheTall 07/29/2018. 2 answers, 102 views microsoft-windows frames
I'd like to minimize emacs on Windows, when I press the Alt-Space, then n keys, just like with other Windows programs (because Alt-Space opens the program's menu that includes the 'Mi_n_imize' option, and 'n' then tells Windows to minimize that...

### 33 How to query gender in a multiple-choice poll/survey?

Jonas Schwarz 07/29/2018. 9 answers, 11.833 views ethics gender survey-research
In a study where human subjects are given questionnaires, it may be interesting to analyze whether effects are gender-specific and/or more pronounced in one gender than in (the) other(s). How can this information be gathered in a way that respects...