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12:10 AM
1
Q: STM32 programming and BOOT0 pin

ningboI am developing a STM32H7 board which will be programmed via SWD. I am curious, is there any reason why I should connect BOOT0 pin to GND via resistor and not directly to GND? I won't be using the bootloader but can it happen that I accidentally disable the debug port from software and then c...

 
4
Q: Can one be advised by a professor who is very far away?

A. P.Lately I have been developing a good relationship with Prof. Wright. She has clearly* gone out of her way a few times to help me, having a very pleasant, generous, and kind personality. Prof. Wright is searching for students (in her university of course, undergraduate, Master, or PhD). I really ...

 
12:39 AM
1
Q: Why not us interferometry to take a picture of Pluto?

Victorbrine CassiniInterferometry is among the best ways (if not, the best way!) to have an image of a very distant object. Recently a picture of the black hole at the center of M87 was released. It is the result of several data collected by the Event Horizon Telescope, a series of arrays all across our world, wor...

 
Law
1
Q: Why do we hear so much about the Trump administration deciding to impose and then remove tariffs?

Mason WheelerI'm no expert on the applicable law regarding tariffs and international trade, but I do know that the most famous tariff policy in US history was the Smoot-Hawley Tariff Act, named after two members of Congress who were its principal sponsors. It added various new tariffs to US law, and is gener...

 
1:08 AM
3
Q: Lightning Grid - Columns and Rows?

BobbygllhLooking to create this type of Grid in Lightning Grid. However what currently happens is C and D get pushed below item B (which is a chatter feed so it is long) Current Component (mine is more set up with C/D switched with A, but i think the concept remains the same) <aura:component implement...

 
1
Q: When should I buy a clipper card after flying to OAK?

user77409As far as I understand, there are no clipper card vending machines at OAK. But there is one at Coliseum Station. If I plan to buy a clipper card anyway, should I do that at Coliseum Station? Or should I buy a regular ticket from OAK to my destination in downtown San Francisco and buy a clipper ca...

 
6
Q: Why not take a picture of a closer black hole?

MorganThere are closer galaxies than Messier 87 for sure, even ours! It sparked my curiosity that they went with one 53 million light years away. Is there a reason for this?

 
2:08 AM
1
Q: Are spiders unable to hurt humans, especially very small spiders?

Andrew GrimmIn an episode of Peppa Pig, one of the characters says that spiders are very very small, and that they can’t hurt you. Broadcasters in Australia have avoided broadcasting the episode involved, because they’re worried that viewers will regard the claim as factually true. Are spiders unable to hu...

 
 
1 hour later…
3:21 AM
3
Q: Reference request: Oldest number theory books with (unsolved) exercises?

Get Off The InternetPer the title, what are some of the oldest number theory books out there with (unsolved) exercises? Maybe there are some hidden gems from before the 20th century out there. I am already aware of the books of Dickson and Hardy. Motivation for this question. Some person came up to me before class ...

 
1
Q: slides for 30min~1hr skype tenure track application interview

feynmanIs it good to prepare slides to present during the video chat even if the search committee say you don't need to prepare slides?

 
3:43 AM
1
Q: Why is the Constellation's nose gear so long?

SeanThe Lockheed Constellation has an enormously long nose gear, which causes the aircraft to slant appreciably backwards when sitting on the ground: L-049 (Image by Greg and Cindy at Flickr, modified by Cobatfor at Wikimedia Commons.) L-649 (Image by the San Diego Air and Space Museum, via F...

 
4:09 AM
4
Q: Feature engineering suggestion required

SSuramI am having a problem during feature engineering. Looking for some suggestions. Problem statement: I have usage data of multiple customers for 3 days. Some have just 1 day usage some 2 and some 3. Data is related to number of emails sent / contacts added on each day etc. I am converting this tim...

 
5:04 AM
4
Q: How to deal with speedster characters?

EfialtesIn many fictional franchises we see people like the Flash who can move at speeds defying physics. In my story I want to include a speedster, however I feel that they would be too overpowered for the setting. So my question is how do non-speedster characters defeat those with speeds equivalent...

 
1
Q: Looking for Correct Greek Translation for Heraclitus

Bill BeemerI have found this quote in a variety of sources, but am wary of the Greek translation (knowing nothing of greek in its many forms over the years) COuld someone help me correctly find the original Koine (or Attic) translation for this quote: "All things come into being through opposition and all ...

 
RPG
5:23 AM
2
Q: Does coating your armor in silver add any effects?

Victor BSimilar to this question, I am curious about the effects of adding silver to your armor. Though adamantine armor (being the other enhancement able to be added to weapons/armor) has a specified effect (under magical item), I have found no entry as to what effects adding silver to your armor would ...

 
1
Q: Ubuntu Server install with full GUI

spicyboiComing from windows server/MacOS... I've been researching for my first linux deployment and I have settled on Ubuntu/GlusterFS for a high performance file server. I have a question about the resources needed by GUI. I understand this is a server and it should be bare bones for performance, but...

 
Law
6:15 AM
1
Q: Interpreting the 2019 New York Reproductive Health Act?

Sarah SzaboThere has been a lot of discussion about the New York 2019 Reproductive Health Act signed by Governor Cuomo. Under what conditions can a legal abortion be performed under the NY 2019 Reproductive Health Act? Certain popular pundits claim that legal abortions may be performed post-birth if the ...

 
3
Q: Distributing a matrix

redblacktreesSince matrix mutiplication is not commutative, the two ways in which you can factorize matrices makes a difference in which side the factor goes on. In particular, if I want to distribute $$((I - A) + A)(I - A)^{-1},$$ would it become $$(I - A)(I - A)^{-1} + A(I - A)^{-1} $$ OR would it be ...

 
1
Q: How to check whether the reindex working or not in Magento?

Magento vsmarttecI have seen the Index Management of our site via admin panel System->Index Management. While checking, some of the indexes haven't updated. In this case, I'm not sure whether the index is working or not. Please see the screenshot for better understanding. Could anyone please guide me on how ...

 
7:08 AM
2
Q: Why are there uneven bright areas in this photo of black hole?

Kushal Bhuyan In the above photo of recently released black hole created by using datas from EHT, why are the region below is more bright than the one above? Is it because of the rotation of the accretion disk? Also what is the orientation of the accretion disk? Are we looking at head on?

 
7:19 AM
10
Q: Where can I find an online Jewish community?

David NazariI've newly created an account on this site as someone who's "lurked" or obtained information here before and found the quality of communication excellent. I moved to Montana from Los Angeles as a fledgling Baal Tshuva, and there isn't really much Jewish community here. I have to stay here for a w...

 
4
Q: How to translate "being like"?

Nino FiliuI can't find how to translate the informal expressions being like/going like, often used in spoken informal English in sentences like these: At first I didn't understand, but then I was like "wait, really?" Everytime I ask you to do something, you go like "no, please, I'm tired" When I...

 
CS
7:46 AM
2
Q: Is Sun brighter than what we see?

Krishnanand JI learned that plasma can reflect radiations of frequency less than that of its own oscillations. If so, considering the plasma in Sun's atmosphere, it should also reflect solar radiations. That would mean that the radiation emitted from the lower layers of the Sun would be reflected back by t...

 
17
Q: Mathematics of imaging the black hole

Piyush GroverThe first ever black hole was "pictured" recently, per an announcement made on 10th April, 2019. See for example: https://www.bbc.com/news/science-environment-47873592 . It has been claimed that state-of-the-art imaging algorithms were an enabler for this historic success. Does anybody care to d...

 
8:09 AM
1
Q: The sum of digits of mersenne primes

Barry PI have problem to calculate the sum of digits of the mersenne primes $M_{57885161}$ , $M_{74207281}$ , and $M_{77232917}$. I'm not a 'computer guy', but I know that the sum of digits of $M_{82589933}$ is $111879913$. Could you help me ? Thanks.

 
2
Q: With regards to an effect that triggers when a creature attacks, how does it entering the battlefield tapped and attacking apply?

Shadow Z.Lets say I have Kaalia of the Vast on the battlefield. I attack with her, and cheat out Aurelia, the Warleader or Tyrant's Familiar. Would I get their "on attack" trigger? Or are they skipped.

 
1
Q: How can I improve the accuracy of my confusion matrix to 100%?

RenaeIs there a possibility of attaining the above? Can someone share with me how to go about doing it if it is? Thank You

 
8:25 AM
1
Q: merge two greps into single one

stetocI need to extract ID from output of another command, currently my extracting command looks like: someID=$(command | grep -oP '(?:^Successfully\sbuilt\s)([\da-z]{12}$)' | grep -oP '([a-z\d]{12})') example command output: ---> Using cache ---> 9b4624927fa6 Successfully built 9b4624927fa6 Exp...

 
3
Q: Can there be female White Walkers?

Avenge The FallenI never saw a female White Walker in the TV show. As for Craster donating only his sons to White Walkers, there are two possibilities: White Walkers don't accept a female gift because they can't be converted. Craster kept his daughters around so that he could have sex with them. Which one's c...

 
8:41 AM
2
Q: Is DXA 2.0 compatible with the latest version of the .NET Framework?

Jonathan PrimmerThe DXA 2.0 documentation states Microsoft .NET Framework 4.5.2 as a prerequisite, it does not state "or later", as with the Java version. We would like to use the latest .Net Framework version, 4.7.2 at time of writing. We installed .Net Framework 4.7.2 (and the equivalent developer pack) then...

 
9:05 AM
1
Q: How do I free up internal storage if I don't have any apps downloaded?

NikkiI have an android voyager, RCT6773W22B. It's version 5.0. When I first got it, and years after that, I could download at least 5 apps downloaded at a time and have a great sum of pictures in my gallery. I would still have space after this. Over time, I would delete apps I didn't use anymore. If I...

 
1
Q: The usage of word born

Sudhir SharmaThere is this sentence in a book named shoe dog which has confused me a lot. In what sense is the word born used here I'd met other accountants who knew numbers,who had a way with numbers, but Hayes was to the numbers born.

 
2
Q: How to type a long/em dash `—`

Mig82When writing emails and articles I often find myself in the need to use a long/em dash — character, not to be confused with the hyphen - character. Normally what I end up doing is I type two consecutive hyphens -- and hit the Space key, which then ends up replacing the two hyphens with the long d...

 
TeX
9:36 AM
3
Q: Omit the same coordinate parameters in drawing line in tikz

wayneWhen I draw lines using TikZ, I always need to specify coordinates. For example \draw (1,0) -- (0,0) -- (0,1); It is getting tedious when you have a lots of draws. My question: "Is there a way to simplify the coordinate parameters?" For example, if the coordinate parameter (on x or y axis)...

 
PM
9:55 AM
1
Q: How to refer to functional requirement specifications (FRS) from user stories?

AchillesLet's consider a simple story for a user authentication screen: As a user, I want to be able to login with my username and password so that I can do xyz. This looks good, but all of the details related to what should happen when the password is incorrect, how many retries should be allo...

 
10:15 AM
5
Q: I am eight letters word. Find me who Am I?

Udhay Titus I am one of the oldest in the World, but oldest in India. I am one of the main resource for Back Bone of India. Actually I am eight letters word. Clue is

 
ELL
1
Q: Is the phrase, "the vending machine was broke" acceptable?

RalphOr do we have to say "the vending machine was broken"? It seems perfectly legal to say, "the vending machine was restocked"; both restocked and broke are past tenses (of restock and break, respectively), so I would think "broke" is correct too.

 
GIS
10:34 AM
2
Q: Selecting and updating attribute values using Python console in QGIS?

ShellyI am working with Landusefc and Class columns (ref table). What I want is: Selecting all water from "Class" and giving a value say '8' in the "Landusefc" column for these selected features. Table looks like I have tried the following code, it works till the selection part but doesn't seem to ...

 
2
Q: Did any laptop computers have a built-in 5 1/4 inch floppy drive?

KazIn the early era of "portable" or luggable computers, such as the mains powered Osborne 1 and the Compaq Portable, 5 1/4 inch floppy drives were the standard storage medium. When battery-powered laptops came of age in the late 1980s, 3 1/2 inch floppy drives were generally used (see for example ...

 
2
Q: Why doesn't mkfifo with a mode of 1755 grant read permissions and sticky bit to the user?

Joao ParenteI'm creating a server and client situation where i want to create a pipe so they can communicate. I created the pipe in the server code with mkfifo("fifo",1755);: 1 for only user that created and root to be able to delete it or rename it, 7 for give read, write and exec to user, and 5 for bo...

 
10:52 AM
3
Q: How would you translate 「腰掛で仕事をする」

CaitlinHow would you translate 「腰掛で仕事をする」in this sentence. 「男が奢るのは当たり前で、まだ女子は腰掛で仕事をする人も多く、24歳25歳が結婚のリミット?!」

 
RPG
2
Q: How can I add encounters in the Lost Mine of Phandelver campaign without giving PCs too much XP?

ZomaI'm currently reading the LMOP scenario. I was thinking about adding some encounters if the PCs want to explore the forest or other side-story zones that aren't considered in the book. But actually I don't want them to earn too much XP from these, plus I've never DMed before so I'm not aware at ...

 
TeX
11:14 AM
1
Q: Command for nulifying spaces

Al_FhI want to declare a variable in class that takes in the font name from the preamble of the TeX file. Something like \docFont{<Variable>}. Is there a command that could nullify the space key in latex? For example \docFont{ Arial } would return the same result as \docFont{Arial}. My myclass.cls F...

 
11:33 AM
1
Q: Is it possible for absolutely everyone to attain enlightenment?

Brian Díaz FloresAs seen in the title of this question, I'm not sure whether everyone is able to attain enlightenment. As far as my study and introspective analysis have shown to me, it seems that in order to uproot ignorance permanently, one has to be able to correct the distortions of the mind (perceptions, th...

 
1
Q: What to expect from an e-bike service?

LegiseyMy e-bike manufacturer recommends a service every 1000km. Tomorrow I'll bring my bike to the shop where I bought it for the first service. I already had a mini-service for free at around 300 km in which I don't know what they did exactly, probably some fine screw tuning. What can I expect the sh...

 
6
Q: Is there a better way to do a empty check in Java

codeManThis might look like a primitive question or a this could be done by a simple util library method that I don't know about. The goal is to check the value of a boolean field that is nested under two objects. private boolean sourceWebsite(Registration registration) { Application application =...

 
11:47 AM
2
Q: Is it ok to offer lower paid work as a trial period before negotiating for a full-time job?

user102611I am currently employed as a TA (statistics related) at a university until September, but I'm looking to transition into industry. I am looking to work in software development or data science. I already have some working experience (several internships let's say) in IT, mainly web development. ...

 
1
Q: If given A^n = a * I prove A diagonizable

Guysudai1 Given matrix $ A \in{M_n(\mathbb{C})}, 0\ne\alpha\in{\mathbb{C}}$ such that $A^n = \alpha I$ prove that $A$ is diagonizable. I've tried proving that the minimal polynomial($m_A$) splits into linear polynomials therefore proving that $A$ is diagonizable but haven't had great success with that...

 
2
Q: What information about me do stores get via my credit card?

flawrLets say I buy something at some (physical) store and pay using a credit card on one of these electronic terminals. What information do the owners of this store get about me (or my credit card) from this transaction? Can they find out whether multiple purchases were paid using the same credit ca...

 
1
Q: What part of the EM spectrum was used in the black hole image?

Dave GremlinThe EHT has published the first image of a black hole. It is the event horizon of the singularity in M87 against its accretion disk. I've been through the reports in the popular press but none mention the light wavelengths this was taken at. Is it an image in visible light, infra-red or longer...

 
12:09 PM
2
Q: How much of the clove should I use when using big garlic heads?

Bar AkivaI recently bought some of those big garlic heads (unlike the small, pretty ones you have in the supermarket). Here is a picture: garlic My problem is that when I take out the cloves and try to cut them, they break apart like a small onion. Here is a pic As you can tell, there is a "whole" clov...

 
1
Q: Why devices on different VLAN but on the same subnet can't communicate?

Jim PapI have a question about switching. I have two devices connected to a switch with IP addresses 192.168.5.20 and 192.168.5.10. Both devices have the same prefix /24, So that means they are on the same subnet. If I split these devices on different VLANs (10 and 20) on the switch, it will not commun...

 
1
Q: two types of coins, decide which type it is based on 100 flips

Benaya TrabelsiI have two types of coins, one is fair(0.5 chance to fall on H), and the other is biased(0.7 chance for H). I have a coin, and I need to determine, based on a 100 flips - which type is my coin. the hypothesis is that the coin is fair only if it fell on heads no more than 62 times out of 100. wha...

 
8
Q: Old scifi movie from the 50s or 60s with men in solid red uniforms who interrogate a spy from the past

DavidI'm trying to remember the name of an old scifi movie. Here are the things I remember about it: Three military officers in solid red uniforms with no other markings or identifications of rank on them except some ribbons on their left chest. They have revived a dead man who was a spy for the fo...

 
12:40 PM
2
Q: How to display lines in a file like ls displays files in a directory?

user2740I have a long file with short lines (one word) f that I would like to inspect. It would fit on the screen if it wasn't for the newlines. Knowing the length of the file I could just do: $ sed -n '1,10p' f > f1 $ sed -n '11,20p' f > f2 $ sed -n '21,30p' f > f3 $ sed -n '31,40p' f > f4 $ sed -n ...

 
2
Q: Using xargs with pdftk

MizarI am using the following code to concatenate all the pdf files in the current directory: find . -iname '*.pdf'|sort|xargs|xargs -I {} pdftk {} cat output union.pdf The first invocation of xargs has the effect of converting the output of sort into a single line, with items separated by a space....

 
12:51 PM
2
Q: What is the most efficient way to store a numeric range?

rghomeThis question is about how many bits are required to store a range. Or put another way, for a given number of bits, what is the maximum range that can be stored and how? Imagine we want to store a sub-range within the range 0-255. So for example, 45-74. We can store the example above as two un...

 
RPG
3
Q: Balance problems for leveling up mid-fight?

curious_penguinI am planning an encounter for 4 level 2 players and I am planning to have them level up mid combat. I wanted to describe it sort of like a power within awakening like many popular animes have. To do this, I want to balance the encounter for 8 level 2 players, and when they level up they will hav...

 
CS
1
Q: Why couldn't they take pictures of a closer black hole?

PyRsquaredThe latest photos of the M87 black hole capture light from around a black hole at the center of the Messier 87 galaxy, which is 16.4 Mpc ($5.06 \times 10^{20}$km) from our milky way. Why couldn't / didn't the scientists involved take photos of black holes less distant, for example those at the ...

 
1:08 PM
1
Q: Cooking pasta in a water boiler

Joselin JocklingsonA friend of mine cooks pasta in a modified electric water boiler which has been modified to keep going even after the water placed in it boils. What are some advantages and disadvantages of this method over placing the boiled water in a pot and cooking it there over a gas stove? Thanks.

 
3
Q: If I can cast sorceries at instant speed, can I use sorcery-speed activated abilities at instant speed?

Soulus101So Teferi, Time Raveler is down, and I have +1'ed him. I may now "cast sorcery spells as though they had flash". My Adorned Pouncer is in the graveyard, and can be Eternalized "only as a sorcery". Does this mean I can Eternalize at instant speed? I feel like it shouldn't but would love a rules c...

 
1:42 PM
3
Q: ParallelDo in mathematica

Matthias HellerI have problems to write parallel code in mathematica. Why is candidates = {}; SetSharedVariable[candidates]; Do[ ParallelDo[ eq = RandomReal[] + RandomReal[]; AppendTo[candidates, eq] , {j, 1, 1000}] , {i, 1, 10}] slower than the non parallel version candidates = {}; Do[ ...

 
1
Q: How can I refresh a custom data tab in the contact summary?

ErikH - CiviCooPI want to store an email address (or phone or address) in a custom group when they are deleted. So if for contact John Doe the email address john.doe@example.org is deleted, it is stored in the custom group Former Communication Stuff. This works nicely on the pre and post hook but the custom grou...

 
2
Q: Is it ethical to upload a automatically generated paper to a non peer-reviewed site as part of a larger research?

AnonimousPhDI'm doing some research on my own as a side-project. In fact, I want no one from my research center to be involved in this research as I feel that they will take credit for my idea, like in past times. Nevertheless, if their involvement is completely necessary, I would consider it. Anyways, this...

 
1
Q: Keeping a retro style to sci-fi spaceships?

InnovineIn my sci-fi world, mankind has begun colonization of the large asteroid Ceres. There are several established towns on the surface, but most of the population live underground in icy/rocky caves. The major industry is mining and exporting water-ice. Ceres is undergoing a rapid transformation from...

 
ELL
1:57 PM
1
Q: "consumers choosing to rely" vs. "consumers to choose to rely"

jammy yang Signals that are related imperfectly to actual quality will mislead those consumers choosing/to choose to rely upon these inaccurate signals. In the provided context, is choosing and to choose interchangeable? Or do they provide a different meaning?

 
2:10 PM
7
Q: Match Roman Numerals

flawrChallenge Given some input string, return a truthy value if it represents a correct roman numeral between 1 (=I) and 3999 (=MMMCMXCIX), and a falsey value otherwise. Details The input is a non-empty string that only comprises the characters IVXLCDM. The roman numerals (that we use here in thi...

 
3
Q: APIPA and LAN Broadcast Domain

Pooja RajputI just want to know can a Local Area Network broadcast domain be operated by only relying on APIPA?

 
2:49 PM
3
Q: Vorinclex, does my opponents land untap if they were tapped before i summoned him?

needhelpIf I summon Vorinclex, Voice of Hunger and my opponent already had lands tapped before hand, do they untap on his turn or do they stay tapped?

 
6
Q: How to obtain a position of last non-zero element

jakesI've got a binary variable representing if event happened or not: event <- c(0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0) I need to obtain a variable that would indicate the time when the last event happened. The expected output would be: last_event <- c(0, 0, 0, 0, 5, 5, 5, 5, 5, 5, 5, 5,...

 
3:09 PM
3
Q: Proving Trigonometric “Definitions”

ToukiHow these things we call trigonometric “definitions” can actually be demonstrated, instead of simply posited, as they usually are? I guess my point is that these trigonometric relations are to be considered as “theorems”, resting on geometrical proofs, rather than “definitions”. The expressio...

 
3
Q: How can I define good in a religion that claims no moral authority?

IncognitoFaith is defined as a belief in God based on spiritual apprehension rather than proof. Religion and science can be seen to oppose one another due to conflicts between people of those practices. In my world, I have a polytheistic technocracy that has joined those opposing forces. Rather than relig...

 
1
Q: Outer glow on 3 sides of a rectangular shape

zakaria mouqcitI have a rectangular shape to which I want to apply an outer glow using Photoshop. I did it but the glow is applied on the four sides, yet my need is to skip the upper side and apply to the remaining ones. Any ideas?

 
3
Q: Can withdrawing asylum be illegal?

MachavityJulian Assange, one of the founders of WikiLeaks, and its most visible member, was arrested at the Ecuador embassy in London, after Ecuador withdrew his asylum Today, I announce that the discourteous and aggressive behavior of Mr. Julian Assange, the hostile and threatening declarations of it...

 
 
6 hours later…
9:14 PM
8
Q: Does HR tell a hiring manager about salary negotiations?

chessofnerdIf I was to negotiate salary for a job offer with HR, is it customary for HR to communicate this to the hiring manager? I'm worried that it colors my relationship with the hiring manager if I accept the offer. It's an indicator of how much I want the job ("I'll work for you, but not for what you...

 
6
Q: Why does the nucleus not repel itself?

Ubaid HassanIf the nucleus is densely positively charged, why don’t the protons in the nucleus repel from each other and move towards the orbiting electrons? Because each proton is not only being repelled by the other protons, it is also being pulled by the oppositely charged electrons Why don’t these con...

 
5
Q: Relationship between Gromov-Witten and Taubes' Gromov invariant

Rohil PrasadFix a compact, symplectic four-manifold ($X$, $\omega$). Recall Taubes' Gromov invariant is a certain integer-valued function on $H^2(X; \mathbb{Z})$ defined by weighted counts of pseudoholomorphic curves in $X$. In particular, this count combines curves of any genus. On the other hand, the Gr...

 
2
Q: What's the name of these plastic connectors

Lukas BarthI'm looking for the name for the plastic connectors you can see in https://www.youtube.com/watch?v=nwAZbA3yUoU&t=39s (at 0:39). They consist of an outer part that can be squeezed together and put into the hole that you want it to go into, and then an inner part that you push into the outer part....

 
4
Q: How do PCB vias affect signal quality?

Jeff WahausIs it bad practice to route high speed signals (like a SPI bus clocked at 4MHz) through PCB vias? I've noticed a good bit of noise (+-300mV) on my SPI bus signals with 3.3V levels. The signals traces are only about 5cm long but they go through about 5 vias each on the way to their destination. ...

 
2
Q: Get name of standard action overriden in Visualforce contorller

SallyRothroatI have a visualforce page that overrides both the 'New' and 'Edit' Buttons of a custom object. In my controller extension how can I get the name of the action that called this page ? I don't see anything in the StandardController, there are methods to redirect to the standard edit and view pages ...

 
9:19 PM
4
Q: Does adding complexity mean a more secure cipher?

melloncollieI have a cryptography workshop question I'm having trouble with as follows; Person A creates a cipher $E_k(m)$ which produces a ciphertext from message "m" using key "k". The function inside E is kept secret but the length of $E_K(m)$ is known. Person B recommends "increasing" security of the c...

 
5
Q: Computing the expectation of the number of balls in a box

631 There are $r$ boxes and $n$ balls. Each ball is placed in a box with equal probability, independently of the other balls. Let $X_{i}$ be the number of balls in box $i$, $1 \leq i \leq r$. Compute $\mathbb{E}\left[X_{i}\right],\ \mathbb{E}\left[X_{i}X_{j}\right]$. I am preparing for an exam, an...

 
4
Q: How safe is it to go to Baghdad?

SDHHow safe is it to go to current day Baghdad as a tall American white dude who speaks only English? Thanks. SDH

6
Q: Getting crown tickets for Statue of Liberty

neubertI'm going to be in NYC near the end of July and was wanting to do the crown tour of the Statue of Liberty. Statue Cruises is only showing tickets from August 12 to September 30 available for purchase. Same thing for the hard hat tour. Does that mean that all tickets for both tours before August 1...

 
5
Q: What is this sharp, curved notch on my knife for?

DarrenI recently bought a knife that near the handle end of the blade has a sharp, curved part: I don’t think it’s a choil because it’s sharp. What is its use? I thought something to do with stripping sinew from bones maybe? It is a PBK Brute Lock Knife MH-689.

 
2
Q: Flight paths in orbit around Ceres?

InnovineIn my sci-fi world, mankind has begun colonization of the large asteroid Ceres. It's a mining hub, with a lot of cargo vessels transporting things in and out. Hydrogen peroxide fuel is cheap and plentiful around Ceres, and the gravity well very shallow, so the kind of fuel efficient rendezvous m...

 
4
Q: Correct punctuation for showing a character's confusion

Evil SparrowI'm trying to show that the narration (third person limited) is being interrupted by the character's thought process, and I'm not sure what punctuation is best for this situation. So far, I've tried two approaches: dashes and parentheses. I'm not a huge fan of either. Is there a better way? Alte...

 
DIY
9:24 PM
2
Q: Is it safe to harvest rainwater that fell on solar panels?

PedroI am working on creating blueprints for my new home. My plan is to have both solar panels on the roof and a rainwater catchment system that directs water from the roof into some tanks in the basement. I expect to have a filter (not sure if it will be ceramic, fiber, etc.) somewhere between the ta...

 
ELL
3
Q: A word that means fill it to the required quantity

tefisjb The jug of milk half full, so he took a glass of water and *. I am not sure if there's a word for it, but I guess if there lacks a word for it there's a phrase that sounds better than "fill it to the required quantity". What word or phrase would you use?

 
2
Q: What do these terms in Caesar's Gallic wars mean?

Shlok VaibhavIn his Comentarii de bello Gallico, Ceasar writes this on first page: The Belgae rises from the extreme frontier of Gaul, extend to the lower part of the river Rhine; and look toward the north and the rising sun. Aquitania extends from the river Garonne to the Pyrenaean mountains ...

 
1
Q: $EDITOR environment variable won't set

Josh WhitlowWhenever I attempt to set the EDITOR environment variable, a subsequent check reveals no value has been set. I was attempting to edit the crontab: sudo crontab -e -u mycooluser which returns: no crontab for mycooluser - using an empty one Error opening terminal: unknown. crontab: "/usr/bin/s...

 
3
Q: What is the light source in the black hole images?

user11801What is the light source in the black hole images? I've searched the site before asking, as well as tried to google it. But perhaps the answer is buried due to the recent news. My understanding, is that the ring in the images is an illuminated accretion disc. What I could not find explained is...

 
5
Q: Star Trek - X-shaped Item on Regula/Orbital Office Starbases

MissouriSpartanOn Regula/Orbital Office design starbases (we see them in the various Star Trek films and even in some of the series), what is that X-shaped thing we see on the side of the upper structure? See my picture below.I've been curious about this since I first watched Star Trek years ago.

 
9:34 PM
12
Q: What do I do when my TA workload is more than expected?

SarahLast year I was offered full funding for my PhD program to TA two courses a semester for the duration of my program (education psychology). Key words, Teaching Assistant. I expected this to mean I would be working with a professor each semester and teaching a recitation section twice a week (one ...

6
Q: Is it okay to consider publishing in my first year of PhD?

Doctoralstudent I'm PhD candidate in Applied linguistics, it's been almost 3 months since I've started but I'm seriously allowing for writing and publishing journal articles. I have asked my supervisor about that, she said that I should devote my time to my thesis and wait until the second year and that writing...

 
TeX
4
Q: writing variables above the numbers in tikz picture

Ding Dong Extremely, Sorry about the vertical upload or the capture of the scale, Could you please consider the picture as horizontal, I need to draw this, I am able to learn from here the following: But I need to re-draw this in my current situation: Will be grateful for the help. Between 1 and k, dot d...

4
Q: Straighten subgroup lattice

Evan KimI would like to straighten out the top node and the bottom node so that they create a more tidy lattice. I found this post here, but I wasn't able to follow what was going on. I just think that my subgroup diagram can be a bit...neater. For example, here is what my book's diagram looks like. Ho...

 
7
Q: What is this business jet?

Chris It could be a Learjet, but I can't find a match.

 
8
Q: Did the UK government pay "millions and millions of dollars" to try to snag Julian Assange?

Gimme the 411In a Fox News broadcast (timestamp 2:59), Greg Palkot (London-based senior foreign affairs correspondent for Fox News) said of Julian Assange: "He has cost the UK government and security forces, police here, millions and millions of dollars. They've been guarding that place, waiting for him t...

 
18
Q: Why doesn't UInt have a toDouble()?

Rakete1111Consider: val foo: Int = 1 foo.toDouble() // ok val bar = 2.toUInt() bar.toDouble() // error! This doesn't make sense to me. Why wouldn't UInt have toDouble? (it also doesn't have .toFloat). The docs say: Every number type supports the following conversions: toByte(): Byte toSh...

8
Q: Compute the product of 3 dictionaries and concatenate keys and values

Old-SchoolAssuming that I have 3 different dictionaries: dict1 = { "A": "a" } dict2 = { "B": "b", "C": "c", "D": "d", "E": "e" } dict3 = { "F": "f", "G": "g" } I want to compute the product of these dictionaries (excluding the product between dict2 and dict3) and combine both the key...

 
2
Q: Is it correct to say the Neural Networks are an alternative way of performing Maximum Likelihood Estimation? if not, why?

aca06We often say that minimizing the (negative) cross-entropy error is the same as maximizing the likelihood. So can we say that NN are just an alternative way of performing Maximum Likelihood Estimation? if not, why?

 
9:39 PM
1
Q: How to charge AirPods to keep battery healthy?

TarasovychOnce on the official Apple website it was written to keep iPhone's charge between 20% and 80% for better battery life. I've not found exact battery specs for the AirPods (I am about 2nd gen), probably they have the same battery type as latest iPhones (Li-ion). So, do I have to keep AirPods with...

 
3
Q: How do you keep chess fun when your opponent constantly defeats?

Tina DolcettiHow do you keep chess fun when the only person that wants to play beats you all the time? I am struggling to want to keep playing, because I get smashed all the time, and it is not fun anymore.

 
4
Q: Accepted by European university, rejected by all American ones I applied to? Possible reasons?

Countess IsoldeI've been wondering this for a while. I'm currently doing the first year of my PhD in Frankfurt. Originally from New Zealand. I'm not complaining about my situation but if anyone asks me I'll honestly say I would have preferred an English-speaking country. I'd actually applied to about 9 PhD p...

 
10:06 PM
1
Q: Is Cinnamon a desktop environment or a window manager? (Or both?)

Adam BarnesAs far as I understand it: X11 is how you draw primitive things; A (compositing) window manager is something that uses X11 to provide the tools for drawing more complex things, and position them in layers on screen; A desktop environment is something that uses a window manager to provide the ba...

 
10:19 PM
6
Q: Inverse Relationship Between Precision and Recall

Tolga KarahanI made some search to learn precision and recall and I saw some graphs represents inverse relationship between precision and recall and I started to think about it to clarify subject. I wonder the inverse relationship always hold? Suppose I have a binary classification problem and there are posit...

 
3
Q: Dropping list elements from nested list after evaluation

morsI need to create a new list from a nested list but using the evaluation as criteria to drop the elements. For example let's say that that I have the following list: list1={{1,1,-(-1)^3,x,2*x},{1,1,(-1)^3,x,2*x}, {1,1,x,2*x,3*x},{1,1,-x,-2*x,-3*x}} and I need to eliminate the elements of...

2
Q: Currents/voltages graph for an electrical circuit

VictorI am trying to design the network graph for an electrical circuit. I have done this by hand so far. Here is the code for the voltages graph g = Graph[{0, 1, 2, 3, 4}, {0 -> 1, 1 -> 2, 2 -> 1, 3 -> 2, 4 -> 3, 0 -> 4, 4 -> 0, 1 -> 3}]; PropertyValue[g, VertexLabels] = Table[i -> StringForm["(`1...

 
1
Q: Why “相同意思的词” is called “同义词” instead of "同意词"?

ZurielWhy is the abbreviation of “相同意思的词” “同义词” instead of "同意词"?

 
TeX
2
Q: Kerning for subscripts of \sigma?

user49915Is there any way to reduce the distance inside σ₀ and between \sigma and its subscript in general in the following setup automatically? That is, each time you type in \sigma_0 (or \sigma_1 etc.), you wish the actual output to be more consistent with \sigma_{\!0} (or \sigma_{\!1} etc.). Input: \...

 
11:16 PM
2
Q: ODD NUMBER in Cognitive Linguistics of WILLIAM CROFT and D. ALAN CRUSE

Ana VardosanidzeIn the subsection 4.3.4.2 The ‘odd number paradox’ of Cognitive Linguistics by W. Croft & D. A. Cruse We read: The ‘odd number paradox’ has also been put forward as a problem for prototype theory. Armstrong et al. (1983) found that people will grade ODD NUMBERS for centrality, even though ...

 
2
Q: Are turbopumps lubricated?

Manu HIt is easy to find data about rocket engine propellant, but quite difficult to ind information about other fluids used in rocket engine. For engine using a turbopump, this pump turns at quite high speed. Such a piece of mechanic should require lubrication in order to work for more than few secon...

 
3
Q: How did passengers keep warm on sail ships?

RickyTrans-Atlantic passenger travel was not very popular until the advent of the steamer, and yet men and women crossed the ocean periodically, including the affluent. From what I've been able to gather, a fireplace, or even a stove, was unthinkable outside the galley. Sailors may have been used to...

 
2
Q: Has there been any research into whether euroscepticism is a function of age or of values?

BenHas there been any research into whether euroscepticism is a function of age or of values. If it is a function of age then euroscepticism should (assuming constant birth/death rates) remain constant as everyone ages. But if it is a function of values, and if values are divided generationally, th...

 
11:48 PM
1
Q: What is preventing me from simply constructing a hash that's lower than the current target?

ZduffI just started learning about Bitcoin, and something I can figure out is why miners have to use a random process (hashing a nonce) to get lower than the target. For example, if the target is 00000000000001ae00000000000000 why not just produce 000000000000000000000000000001 to become the win...

 

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