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CS
CS
00:03
1
Q: How to Desolder a USB-C Socket Surrounded by Tiny SMD Components?

rantoniuswI'm seeking advice on desoldering a 12-pin USB-C connector with 4 casing pins. There are some extremely small 0402 packages just millimeters away from the pins. It's a sub-board of an outdoor phone. How would you approach this task?

DSP
DSP
1
Q: signals with periodic Fourier transform

Gunawhile trying to solve a question (from s&s Oppenhiem) regarding continuous time signals with their Fourier transform being periodic, I found in a solution manual that if the Fourier transform is periodic, so should the signal. As far as I know the spectrum is periodic when the signal has only im...

Law
Law
00:25
1
Q: Can the president ban the death penalty for federal crimes?

Neil MeyerSeeing as the President is the leader of the federal government does he have the right to abolish capital punishment in federal cases? Could this be done without an constitutional amendment?

00:51
2
Q: Entanglement Negativity and Reduced Density Matrices

zeroknowledgeproverThe negativity of a density matrix is defined as $$ \mathcal{N}(\rho_{AB}) = \frac{1}{2} \bigl(\|\rho_{AB}^{T_A}\|_1 - 1\bigr), $$ where $\rho_{AB}$ is a density matrix on the bipartite system $A \otimes B$, $T_A$ denotes the partial transpose with respect to subsystem $A$, and $\|\cdot\|_1$ is t...

01:10
1
Q: Exact start date and time of the Cardano network?

nalyd88What is the exact start date and time of the Cardano network? I need to do some epoch boundary time calculations and want to make sure I have the exact network start time. Is this value archived somewhere that I can reference?

CS
CS
3
Q: Is there a significant difference in meaning between "Do not …" and "Thou shalt not …"?

Ray ButterworthIn Leviticus 19: 28You shall not make gashes in your flesh … לֹא תִתְּנוּ — the verb is qal, imperfect, second person, masculine, plural 29Do not degrade your daughter … אַל־תְּחַלֵּל — the verb is piel, jussive, second person, masculine, singular I can see that the qal versus piel could ...

1
Q: USB2514B USB high-speed mode issue

pxidrI'm using a USB2514-B as a 4-port hub connected to a Raspberry PI CM4, and I can't figure out why the USB devices connected to it only work in full-speed mode. If I connect a USB device in high-speed mode (like a USB mass-storage device), the device is not recognized and dmesg throws out I/O erro...

4
Q: Preservation of weakly compact cardinals

CaelusWhat's a property of a forcing poset that stops the forcing extension $V[G]$ from killing a given weakly compact cardinal $\kappa$ in $V$? One sees that $\mathrm{Add}(\kappa, \gamma)$ preserves $\kappa$'s weak compactness (although it won't preserve measurability; you need $o(\kappa) = \kappa^{++...

01:33
1
Q: What does following a person on Steam do?

OtakuDisclaimer: I'm not a stalker. Steam lets you follow people. What does following people actually do though? Having someone as a Steam friend already lets you see what games someone adds to their wishlist, starts playing, buys, etc... so what's the point of following someone, and what does it do?

2
Q: Four inappropriate requests: Why is Yiftach the exception?

LeahPIn Bereshit Rabbah 60:3 , we learn that: "There were four who made inappropriate declarations; three were answered favorably and one was not. They were Eliezer, Calev, Shaul, and Yiftach. For the first three, the Midrash goes on to show how each of their requests could have backfired, but that ...

1
Q: In 1 Samuel 20:30, what is meant by "unto the shame of thy mother's nakedness"?

Ruminator [JPS 1 Samuel 20:30] Then Saul's anger was kindled against Jonathan, and he said unto him: 'Thou son of perverse rebellion, do not I know that thou hast chosen the son of Jesse to thine own shame, and unto the shame of thy mother's nakedness? What might be Saul's concern?

01:55
4
Q: Applications of category theory to numerical analysis?

gmvhCategory theory has become pretty much the standard language in many "pure" fields such as algebra, topology, algebraic topology ..., and it is also making inroads into some applied fields, such as mathematical physics and theoretical computer science. One field in which there seems to be a notab...

1
Q: how do the properties of uv crafting resin differ from 3d printing resin, from a crafting perspective

Aaargh Zombiesfrom a crafting perspective how do the properties of transparent uv crafting resin differ from transparent photosensitive uv resin used in 3d printing. For example, curing time, visual properties, ease of use, handling, and individual use cases. If one were to try to use transparent 3D printer re...

Vi
Vi
1
Q: Why is the :normal command skipping a line in Visual selection?

VivekConsider the below sample file a b c d When I visually select first two lines a and b and then execute :norm dd it seems to delete first and third line instead of deleting first two lines. The output is b d Any idea why this is happening? I know we can use dj motion but I'm just curious why :no...

1
Q: Why does the ratio of non-instructional to instructional full-time staff keep increasing in US universities?

Franck DernoncourtLiminary note: I'd like to emphasize I'm asking this question neutrally. There could be some good reason for that trend, such as more non-instructional research staff. I saw on https://x.com/DOGE/status/1869811780543021359 : Beware that the y-axis starts at 50,000 rather than 0. The plot shows ...

GIS
GIS
1
Q: From Google Maps to QGis

NatalieI want a map of all the grocery shops QGIS as point-layer. I was in the past able to export googles mymaps as kmz-file and import that. However for some reason I'can't explain only few shops are on mymaps. On googlemaps I have now created lists and have saved all the grocery shops, but I can't fi...

02:19
1
Q: Arnie (RNA Folding) Not Detecting ViennaRNA Even After Modifying utils.py

Hugh RedfordI'm trying to use the Arnie Python package for RNA folding with ViennaRNA and LinearFold. However, even after modifying utils.py to include debugging statements and manually add ViennaRNA, Arnie does not detect vienna_2. I have verified several times that ViennaRNA is downloaded. This is on Linux...

1
Q: Did Hitler ever claim "I am a socialist"?

GabrielI've seen this image thrown around mainly on Twitter: The quote begins with "Ich bin sozialist" and it is purportedly a direct quote from Hitler. It is used mostly by right-wingers to assert that Hitler was a socialist. Examples: Philosophia Perennis Die Zeitung Klonovsky A similar quote can b...

1
Q: How might a police state be a 'good thing'

SeriousBriThis question probably comes from a different place to some questions on here. I am currently playing a character who genuinely supports a police state (in the classic 1984 style) and I am trying to get myself into the head of someone who might do so. I have done a Google search for justification...

03:03
2
Q: Native-born Jewish mother of a convert

Mars SojournerThe following is from Rambam's Sanhedrin veha’Onashin haMesurin lahem - Chapter 11 All individuals are acceptable to judge cases involving financial laws, even a convert, provided his mother is a native-born Jewess. הַכּל כְּשֵׁרִים לָדוּן דִּינֵי מָמוֹנוֹת אֲפִלּוּ גֵּר וְהוּא שֶׁתִּהְיֶה אִמּ...

3
Q: How a 20 min FTP test can be an indication of a form level?

EnderI don't understand why 20 minute FTP test has been so popular amongst cyclists. Professional races last around 4-5 hours and if you are an amateur, granfondos last at least 2 hours. If we're talking about racing, you need to sustain your effort over a much longer period of time. Also this test is...

3
Q: Is it okay to claim more than once if you have multiple travel insurances?

Max PayneRecently had to receive emergency medical care when travelling and was wondering with which insurance provider to claim. I have a travel insurance addon via my health insurance provider and another one via my credit card. Is it fine to claim from both immediately? Obviously waiting for the claim ...

TeX
TeX
1
Q: Vertical glue not working in minipage with fixed height

GausslerIn the following minipage with a fixed height, why does TeX not try to use the glue settings to make the content fit within the fixed height? I don’t even get a warning about an overfull \vbox. \documentclass{article} \newcommand\test{% \vspace*{1em plus 1em minus 1em} Test% \par } ...

1
Q: When do "ce", "cette" need antecedents?

Peter Shor This is a very general question, but I am asking about a particular sentence. There is an urban legend that, according to the laws of aerodynamics, bumblebees are unable to fly. The source seems to be Antoine Magnan's book Le Vol des insectes, which contains the following passage in its introduct...

03:46
2
Q: What is the attack vector in allowing to frame non-HTML content?

postoronnimThis question is specific to Clickjacking attacks and Content Security Policy. When the server sends a static resource, such as .gif, .woff, .js file, which is not an .html, what is the security vulnerability in not using CSP or not specifying frame-ancestors directive thereby allowing other site...

8
Q: Replacing window function OVER() with WINDOW clause reference yields different results

T NWhile preparing an answer to another question here, I coded up a query that contained multiple window functions having the same OVER(...) clause. Results were as expected. select ... sum(sum(s.price)) over (partition by p.productid order by c.date ...

4
Q: How can routing protocols such as OSPF and RIP use the network layer

Errors for lifeI am currently reading the the network layer chapter in Kurose & Ross Computer Networking: a top down approach. I understand that one of the responsibilities (services) of the network layer is to provide host to host delivery of data and to achieve that goal the network layer uses routing protoco...

1
Q: Role of a Graduate Student Working with a Professor from another University

MrAmbiguneDLI have been collaborating with a professor on a paper for a few months now. This professor was once a faculty member of my undergrad university (and I think he still maintains an affiliation there), but is currently serving as an adjunct assistant professor in another university. The problem is t...

5
Q: Why is the ellipse a good approximation to a catenary for these cases?

MichianaWoodturnersI’m a retired engineer and am stumped on why, for my cases, a catenary curve can be approximated by a portion of an ellipse. Both curves have their vertex at the origin. For the catenary, $$\frac{y}{c}=\left(\cosh\frac{x}{c}-1\right)$$ The boundary condition is $(x,y) = (R,H)$ as shown in the s...

04:12
3
Q: Does there exist a topology, such that famous "wrong" convergent sums hold?

klack69I.e.we all know stuff like $\sum_{k=0}^\infty k = -\frac{1}{12}$, i was just wondering if there are any interesting topological spaces where stuff like that holds, and wether this question was already investigated. The indiscrete topology has this property of course, but is not interesting. Is th...

04:31
1
Q: Macbook Pro 2011 High Kernel Task CPU%

JoeMacBook Pro (13”, late 2011); Memory 4GB; Processor 2,4Ghz Intel; Graphics Intel HD; Mac OS Sierra 10.12.6; Power adapter original 60W (got 2 of them); Battery new. This issue has been reported before (MacBook Pro 2011 slow) and appeared to be solved since the Mac was working fine for three days....

1
Q: Slowly losing hard drive space

El_AlacranI'm slowly losing hard drive space and I don't understand why. I had 15 GB initially and now I'm down to less than 4 GB despite only installing a few programs/files. I have searched online and watched videos, and although I have been able to reclaim some of the disk space, overall the hard drive'...

1
Q: What are the logistics for US government "ownership" of Gaza?

BobEI realize that there are some similar questions, but I don't see any that directly ask what the logistics (plan) is to "own Gaza". For example is the removal of ordinance going to be done by US military. Is the clearance of debris going to be done by US military or some other US governmental body...

04:57
1
Q: Puzzle with different hexagon patterns

Loopin Visual puzzle, pattern. Source: https://docs.google.com/forms/d/e/1FAIpQLSfJem2ocgmifwE9P_iiPROObYEVDUGvB9Yh-u0FqJd-hkkrrA/closedform

CS
CS
05:16
1
Q: Design of a compact 10W isolated DC/DC converter?

needbrainscratchedI am a beginner to converter design and just wanted some clarification before I get started about my best options for designing an isolated 10W DC/DC converter. It has to be able to step up 10V to 100V with power rating of 10W. Based on everything I have read so far- flyback seems to be the best ...

1
Q: Why is common ground needed for a LN298N project

user3553471I am working on a project that has an LN298N driver control 2 motors, I am using this video for the basics: https://www.youtube.com/watch?v=H1Fzil_VUq4&t=162s There is just one thing that confuses me, below is the wiring: (The diagram is incomplete as it omits the power source for the pico, in t...

1
Q: Identify the component: stack of metal plates

e_asphyxThis was found inside a slide projector made by Braun in 1960s in a motor control circuit. It looks like a stack of metal plates (pretty loose, one was poking out and I pressed it back) and has four terminals. The motor looks like a shaded pole motor but has two windings, which is unusual, and th...

5
Q: Book about a woman on a star ship where everyone is psychic

Josi Reis-WestI read this book maybe 25 years ago. I believe it was first published in the 80s or 90s, and I think the author was a woman. Essentially, the main character is crew on a star ship, and there is some sort of rank structure like government or military. Everyone has psychic powers, at the very lea...

CS
CS
05:38
1
Q: 2016 Exit polls: Did 90% of Muslims vote Clinton over Trump?

BCLCI'm new to exit polls of elections. From 2016 CNN exit polls, there are 2 versions of the exit polls Here's the (transposed) text version of the tables : Not combined Mormon Other Christian Protestant Protestant/Other Christian Catholic Jew Muslim Other Other/Muslim None Democrat 28.00% 4...

2
Q: Can't Thicken 2D Shape

Jack FarmerI'm making a 2D logo and want to make it thicker, but I can't. Extruding doesn't work, the Solidify modifier doesn't work, and I can't even move vertices along the Y-axis (which would thicken it in this case since the logo is aligned along the X and Z axes). I can move it around in Object Mode, b...

06:01
4
Q: Unap_peel_ing permutations

Jonathan AllanGiven the height, \$h\$, and width, \$w\$, describing a rectangle of the first \$hw\$ natural numbers in row-major order produce the numbers in the order they are encountered by repeatedly removing a strip of the outermost numbers, each time starting with the top-rightmost and ending with the bot...

Law
Law
06:23
1
Q: How is the age of consent decided in an international relationship with conflicting laws?

someonehereTwo people are consensually sexting. Person A is under the age of consent of its nation (United States) but person B is in a different nation (Portugal) where person A would be over the age of consent. Could person B face any legal problems (either in Portugal or the United States)?

07:08
4
Q: Why are quotients so much trickier in constructive type theory than in constructive set theory?

Christopher KingQuotients in constructive type theory are a bit of a pain. My understanding is that the first type theory that supported them well was cubical type theory, and in previous type theories the alternative was called "setoid hell". On the other hand, consider how quotients are handled in CZF set theo...

1
Q: Sentient creature that cannot wear anything

VashuSentient creatures evolve on a warm continent and for some reason is unable to wear anything: clothes, armor, spacesuits. As they start their expansion they have to find way to keep them warm. As they invent weapons the have to do without armor. Why would they have this restriction?

1
Q: Can you scatter a model made of multiple objects?

CowToesiesI was wondering if it’d be possible to scatter a model made of multiple objects across a plane (without joining them) using geometry nodes. For example, this house, where each window is its own object:

5
Q: Can a cardinal out himself out of the candidates pool during a conclave?

WoJNote: this question is inspired by the movie Conclave (2024) but is specifically not a movie question. I am only interested in the legal/formal aspects. During a contemporary papal conclave, the next pope is chosen among the cardinals present at the ceremony. Is it possible (formally/legally, not...

 
1 hour later…
08:17
4
Q: lndir shell function - hardlink two directories

SinjaiThe code works, but I could use help testing it more comprehensively and double-checking that everything I'm doing makes sense, and that all the options can coexist with each other. I'm running into the problem that I've been staring at my own code for too long and could really just use outside i...

08:40
4
Q: A Python class for parsing an SFV file

viuserSimilar to the class for the RAR file, now a class to extract and store the hashes from SFV files. Though this was considerably easier, there has been some code reorganisation: there is now an abstract HashFile class, from which both RarFile and SfvFile inherit: """This module contains classes an...

09:01
3
Q: How to render flipped normals model on Blender

MatthattanI'm wanting to make a logo of some sort, and I'm following a tutorial to use a Roblox Avatar. Problem is my avatar specifically has two accessories with flipped normals which gives each accessory their own outlined appearance. The tutorial advises turning on Backface Culling which does display th...

1
Q: Geometric reasoning problem with a circle

David G. StorkIn the geometric figure, the point p is the center of a circle and the two angles marked are 20 Degree (converted to radians): GeometricScene[{{a, b, c, p}, {r}}, {CircleThrough[{a, b, c}, p], GeometricAssertion[PlanarAngle[{a, b, p}] == \[Pi] 20/180], GeometricAssertion[PlanarAngle[{a, c...

09:22
1
Q: Without author apex, user is able to run anonymous apex using workbench

Kiran MachhewarScenario: I would like to remove the author apex access from production for developers and only keep access to use developer console for running soql. To achieve this I gave minimum permissions to developers as below: API Enabled View all Data (Needed for developer console) No author apex permi...

2
Q: No second supervisor

SophieGI am in my first year of a full-time PhD. I was told I'd have two supervisors. No-one suitable who is available can be found in my university, and I am told by my principal supervisor they will not support the appointment of someone from another institution in case anything happens to them (my pr...

1
Q: Trying to understand car-related verbs: 運転する, 走る, 乗る

Nicholas DeGraffI'm pretty much a beginner at Japanese, but have been running into issues with 運転する, 走る, and 乗る. I know that 運転する is literally driving/operating the car, but 走る and 乗る seem to be used in contexts related to driving that confuse me. I was browsing the Honda User's Voice page and came across a lot ...

RPG
RPG
09:44
4
Q: Balance permanent sacrifice against enchantment of an item

ScherbenRecently a player decided to accept a permanent sacrifice of her character in order to enchant an item. I would like to weigh the power of the item against the type of sacrifice. Mechanics: A medium sacrifice should be comparable to a rare item, and a big sacrifice to a very rare item. Crunchy: A...

TeX
TeX
3
Q: LuaTeX: big operators with OpenType math font

Michal DoušaI am trying to set up my own macros for (plain) LuaTeX for typesetting math from OpenType fonts. Below I have posted a minimal (non-)working example. I do not understand why in the example below the summation operator in display style is as big (small) as in text style. I thought that this should...

10:07
3
Q: Looking for the name of a Japanese anime from late 80's or 90's

David MyersThe main character is a high school student training to become a fixer/negotiator due to an event in his past. He was selected by a mentor to protect the young daughter of a criminal family i believe. There are some super natural elements such as his training in a martial art that shortens his ...

2
Q: Prediction interval for an estimated total?

user_436830I have some simulated time series data in R: library(tidyverse) library(forecast) library(lubridate) set.seed(123) dates <- seq(as.Date("2023-01-01"), by = "month", length.out = 36) trend <- seq(1, 36) * 2 seasonal <- sin(2 * pi * (1:36) / 12) * 10 random <- rnorm(36, mean = 0, sd = 5...

2
Q: This is not a square

Dmitry KamenetskyCan you draw a shape that has 4 right angles and exactly 4 sides of equal length, but is not a square? You may need to think outside the box ;)

 
1 hour later…
11:17
3
Q: How do I determine if an n×n, modulo m Light's Out puzzle is solvable?

EnubSolutions to $n\times n$ Light's Out puzzles can be represented via linear algebra with the equation $\mathbf{1}_{n^2} = A \mathbf{x} + \mathbf{v} $ where $\mathbf{v}$ is the initial configuration of lights (length $n^2$), $\mathbf{x}$ is the set of moves to reach the solution (length $n^2$), and...

 
1 hour later…
12:21
9
Q: Half Price for Every Second Pizza

tataPizzaTata is a popular restaurant specializing in pizza delivery. Customers can order pizzas by phone. And each order is charged by the sum of pizza prices and the delivery fee. Pizza Prices: The cost of each individual pizza. Delivery Fee: A fixed fee per order, regardless of the number of pizz...

2
Q: Is it normal for students not to apply to their own departments' conference?

SarahI am a PhD student and running a graduate student conference for our department. I was told it is a tradition for first-year students to run this conference and important to do so. No students from our department applied to present or even offered to help. But people from elsewhere applied... And...

3
Q: Quasi-Reflexive C*-Algebras

Miles GouldLet $A$ be a C*-algebra. When is it the case that $A$ is quasi-reflexive? i.e. when is $A^{**}/A$ finite dimensional? Of course, this is true when $A$ is finite dimensional itself, but is it true for some infinite dimensional $A?$ If yes, are there conditions guaranteeing when it is definitely no...

12:45
2
Q: What is the maximum speed at which an unprotected human can travel (alive) in atmosphere?

BorealisWhen asked "what superpower would you like to have?", many people often answer with "flight", potentially because they think it would afford them "free travel". Focussing on this aspect of the answer, my question is: What is the maximum speed at which an unprotected human (i.e. just wearing regul...

GIS
GIS
13:08
6
Q: QGIS - Merge 2 layers and also merge the Categorised Symbology

JackUsing QGIS (v3.22) I have 2 layers which I need to merge into one. They have identical schemas, both have categorised symbology. Merging the data is simple but is there also a way to Merge the symbology? Example I have Layer A & B below and want to end up with the Merged version. I'm sure I can d...

CS
CS
13:28
1
Q: Circuit to convert pulse roof voltage level to voltage

MontiI have a pulse train with a frequency of 1Khz. Its duty cycle can be anywhere between 5% and 95%. But the voltage level of the pulse can also change and that is the information I would like to convert into a voltage level output, independent of what the duty cycle is. In other words, the output v...

1
Q: How to remove 'newline' from 'here string'

SeamusThe 'here string' (<<<) is a useful construct, and can be used in lieu of echo in many situations. However, when calculating a hash (as one example) the addition of a newline character changes the hash value. I've searched for a compact method to prevent the newline from being added by the 'here ...

HSM
HSM
13:50
1
Q: Origins of Bessel function

chillinI'm working on an exploratory essay that uses the Skellam Distribution and I found that it involves the Bessel function (specifically of the first order). I tried looking up information about the origins of the Bessel function and particularly about the Bessel function of the first order, but I d...

Vi
Vi
2
Q: How to pass the current line number to a shell command an argument?

Vaska el gatoI need to get information about the last person edited the file, so I use git blame to achieve this. All I need is to run git blame -L X,Y and have it pasted in the Vim window. If I attempt one of the following I don't get any results: :!git blame -L .,. :!git blame -L line('.'),line(.) Is there...

2
Q: What happened to Invincible's powers during this fight?

SIMELTowards the end of Episode 1 of season 3 of Invincible. But in episode 2 So the question is:

5
Q: Proving an discrete three variable inequality using tangent line trick.

Yusuf WaleedLet $a,b,c$ be positive real numbers, show that the following inequality holds $$ \frac{a(a+b)}{(b+c)(2a+b)}+\frac{b(b+c)}{(a+c)(2b+c)}+\frac{c(a+c)}{(a+b)(2c+a)}\geq 1. $$ $\textbf{My attempt}$ I first rewrote the inequality as following $$ \sum_{cyc}\left(\frac{a}{b+c}\right)\cdotp \left(\frac...

 
1 hour later…
15:20
3
Q: What did Kate whisper to old Lobbs, in Dickens' "The Parish Clerk"?

Jan PettingerMy favorite short story by Charles Dickens is "The Parish Clerk: A Tale of True Love", from chapter 17 of The Pickwick Papers. In the last paragraph but two, the narrator writes: The old man cast down his eyes at this reproof, and they met those of his daughter [Maria]. I have hinted once or twi...

15:44
2
Q: How to change orientation of triangles?

digory dooWhen mirroring objects, it often happens that an object ends up with a transform that has at least one axis negative. I can "apply all transforms" to bake the transforms into the object, but that does not change the fact that the orientation of those triangles is now flipped. I could fix it by fl...

16:28
6
Q: How to delimit and print third value for every column in a file using in bash or awk

user2293045I have a file with a header row containing the file path as the name for each column and I'd like to extract and print out just the file name. There are over 100 columns. E.g. Input header row: AAF2Y7VM5-8/cnv/F04_reads.tsv AAF2Y7VM5-7/cnv/D04_reads.tsv AAF2Y7VM5-6/cnv/E04_reads.tsv Goal ...

CS
CS
16:49
1
Q: Why LDO output noise reduce with frequency

JessDoes anyone know why output noise reduce with frequency (in particular at frequency beyond 1 MHz)? I think it is a general principe of physics but I am not able to explain it. Here is a typical graphic showing the output noise reducing with the frequency. It comes from this datasheet Thank you f...

17:11
3
Q: How are airfoils optimized for different flight regimes?

AirMarshalI am wondering how are airfoils optimized to handle well in a variety of flight regimes or Reynolds numbers. Let's say you want an airfoil that compromises between having low drag at speeds around 300 mph, a high L/D ratio at around 100 mph, and still be able to fly relatively efficiently at arou...

7
Q: Does a fully reusable rocket system require a huge rocket?

CalmariusStarship is the world's largest and most powerful rocket and so far the only one that came closest to demonstrate a fully reusable system where both the first and second stages are recoverable. Does a launch system have to be this huge to make reusability possible? Are there square-cube laws that...

2
Q: Are there other things besides black holes that light can't escape from? Beginner's question

dkh5Why is it important to specify that even light can't escape from a black hole? Aren't there a lot of things that light can't escape from? My shoe, for example? Or is it just theorized that because it's so dense, light doesn't escape from it. My shoe is not dense, but light doesn't escape from it ...

TeX
TeX
3
Q: force LaTeX to use the space available at the top and bottom of the page using figures

saami783How can I force LaTeX to use the space available at the top and bottom of the page to display the title and additional text on the same page as my images without changing their size and only for that specific page? \documentclass[a4paper, 12pt, twoside]{report} \usepackage[utf8]{inputenc} % ...

17:35
1
Q: How to wait for an NFS mount in a systemd service?

ApolloI have a service that requires an NFS mount to be mounted, but it fails. I created a mount file with systemd escape. The mount file itself works, the mount point is available after start. It looks like this: [Unit] After=network.target [Mount] Type=nfs What=10.1.1.10:/opt/company/product-categor...

10
Q: Invitation for review - found out should be coauthor

AnastasiaI was asked to review a manuscript. In the invitation e-mail, information about the manuscript was not blinded, all names of the authors and the abstract was in the e-mail. I found out, that I not only know most of the authors and was part of this group, but I think I should probably also be coau...

TeX
TeX
1
Q: Fixing "lua <node> expected" error in LuaLaTeX paragraph processing

B LegrandI previously asked a question about measuring the width of the last line of a paragraph using LuaLaTeX (see this answer). However, I encountered an issue when compiling a document using this code. The compilation fails with the following error: error: (node lib): lua <node> expected, not an objec...

18:20
1
Q: Based on a given start/end date range, how to find matching single dates with Excel formular only?

burnerskI have an Excel file with two worksheets (list of single dates of absence, and list of calendar weeks with start/end date of calendar week and availability status). (date writing style: year-month-day) worksheet list of single dates of absence (Absence): worksheet list of calendar weeks with sta...

RPG
RPG
18:41
2
Q: Can you influence the appearance of targets in the Dream Spell?

EllaIn the Dream spell the messenger can [...] shape the dream’s environment, creating landscapes, objects, and other images. The question remains if this also includes the appearance of both the messenger and the target of the spell since that entails more than just simple images and is not specif...

6
Q: Can a work be considered "not written by AI" if AI was used for research and brainstorming but was not used to (re)write, edit or proofread text?

NzallLike many people, I've been experimenting with AI and using it for my own personal needs, for example as a way to summarize search results or as a more personalized recommendation engine for entertainment. I have also used it for professional use in my capacity as a programmer to write and mainta...

RPG
RPG
19:25
6
Q: What happens if you roll a 20 on a death save but you can not regain hit points?

LuySome game effects, such as the Bearded Devil's Beard action or the Chill Touch cantrip, prevent creatures from regaining hit points. What happens if you have to make a death saving throw under this effect and roll a natural 20? The relevant rules sections - Death Saving Throws and Stabilizing a C...

2
Q: Some instruments (e.g. banjo and electric bass) can be fretted or fretless, other instruments are always fretted or always fretless. Why?

zabolekarElectric bass guitars and bass ukuleles sometimes have frets and sometimes don't. Both variants are widely used, manufacturers sometimes make two almost identical models where the only difference is one of them not having frets, bass players often play both variants and use the one they currently...

1
Q: How do I twist faces?

EdwardI am looking to twist a selection of faces on a mesh. I selected a batch, extruded a bit (using Size) and now I want to twist them so they point more inward than out. How would I go about this in Blender 4.2.5?

TeX
TeX
2
Q: Error "Illegal mode change in hook 'para/before'"

BinarusI am trying to output some material (e.g., a character) at the begin of every paragraph. That is, if the paragraph begins with the letter 'A', then there should be first my material (e.g. the letter 'B') immediately followed by the letter 'A' on the same line. I have read at various places (e.g. ...

CS
CS
19:48
1
Q: Does USA have the "lowest average tariff rates in the world"?

Kelly ThomasA White House fact sheet makes the following claim: Access to the American market is a privilege. The United States has one of the most open economies in the world, and the lowest average tariff rates in the world. Is there any factual basis for this claim that USA has the lowest average tariff...

20:14
7
Q: "NOT" spatial at all ;)

Prim3numbahThe answer is a single word. What word?

20:34
1
Q: How would "notes" and "thoughts" rhyme back then?

RickyBack when the Great Vowel Shift was supposedly over, William Wordsworth penned the following lines: I heard a thousand blended notes, While in a grove I sate reclined, In that sweet mood when pleasant thoughts Bring sad thoughts to the mind. Now: Was "thoughts" pronounced as "thotes," or was "n...

2
Q: Balancing the redox reaction of oxidation ethanol by dichromate - me versus ChatGPT

DuccioI found online this redox equation to balance as an exercise: $$\ce{CH3CH2OH + Cr2O7^2- + H+ -> CH3COOH + Cr^3+ + H2O}$$ No solution was given. My solution was: $$\ce{3CH3CH2OH + 2Cr2O7^2- + 16H+ -> 3CH3COOH + 4Cr^3+ + 11H2O}$$ If I'm not mistaken, H:34, O:17, C:6, Cr:4, e-:12 on both sides ChatG...

1
Q: Disable 3-press emergency dial feature on Nokia G50 after visiting India

Mark AmeryI have recently taken my (UK) Nokia G50 to India for a vacation, and as a result, now any time I press the power button three times in quick succession, it calls the emergency services. This is apparently required by Indian law, and, per both my own experience and the grumbling of people on forum...

20:55
5
Q: What is this part on S-3 Viking?

Seungwoo SonWhat is this part on the S-3 Viking at the Naval Air Museum? You can see a close radiator in the back of the fan. (original image).

1
Q: Problem adding PGP key to a DEB822 style file in /etc/apt/sources.list.d

martin1959I am trying to create a file for vs code in /etc/apt/sources.list.d in the DEB822 style from the examples in man sources.list. I also read in man apt-key that apt-key add is deprecated. I have the file vscode.sources as: Enabled: yes Types: deb URIs: http://packages.microsoft.com/repos/code Suite...

3
Q: How to reach out to alumni for informational interviews ("coffee chats")

Tamandani MphoI'm considering graduate school and would like to reach out to school alumni with careers I find interesting for information-- what they worked on during their PhD to build skills, whether they needed a PhD at all for the role, and whether some of my assumptions about the nature of their work (as...

2
Q: Trouble rewriting an operator involving Pauli matrices in polar coordinates

Luka VilshanskyyConsider the operator $$V = -\frac{i\hbar^2k}{m}(\sigma_x\partial_y-\sigma_y\partial_x), $$ and suppose we want to rewrite this in polar coordinates. Let us denote the prefactor, excluding $i$, by $\alpha$. The go-to, for me, is to note that $\frac{\partial }{\partial x}=\cos\phi \partial_\rho-(\...

CS
CS
21:17
1
Q: Thought experiment and possible contradiction between electromagnetism and special relativity (Part II)

Mohammad JavanshiryA new thought experiment has recently crossed my mind to which I could not find a clear solution as yet. Assume that an observer $B$, holding a magnet, moves inside an electric field of $E_y$ at $v$ relative to an observer $A$. [See Figure 1-(a)] Since the magnet is supposed to be electrically ne...

1
Q: Gravitational Potential Energy and intuition related to setting reference point

NISHANTH KRecently I came across Gravitational potential energy. I think it is more intuitive to set reference point for Gravitational Potential Energy as $r=0$ and not infinity. Some of you might point out that force blows off to infinity at $r=0$, So I would assume you know that gravitation has a slightl...

ELL
ELL
1
Q: his brother is not so tall

azza. Ian is very tall. His brother is not so tall. b. Ian is very tall. His brother is not as tall. Do (a) and (b) mean the same? I think (a) could mean the same as (b) and it could also mean that his brother is not that tall. I think 'not so ADJECTIVE as' is being replaced by 'not as ADJECTIVE as'...

3
Q: Differential Form of Renormalization Group (Lancaster/Blundell, 34.6)

Martin FranzOn page 303/304, Lancaster/Blundell give this equation: $$ \lambda_{p}\left(\mu^{\prime}\right)=\lambda_{\mu}(\mu)+6a\left[\lambda_{p}(\mu)\right]^{2} \ln\left({\mu^{\prime}}/\mu\right)\tag{34.5} $$ "which is expressed in differential form thus:" $$ \mu \dfrac{d}{d\mu} \lambda_{p}(\mu)=6a\lambda_...

TeX
TeX
2
Q: How to align pairs without a table?

NickI have a 30 pairs of the numbers, the left number is negative, the right number is positive. I want to align pairs and numbers in their: the comma in the brackets is centered, the right number is aligned to the right side (bracket), the left number is aligned to the comma. Question. Is it possibl...

21:43
4
Q: Pandigital Chronometer

Bernardo Recamán SantosI set my telephone's chronometer a while ago and at the moment it stands thus: How soon will I see ten different digits? If I allow it to run indefinetly, how many times will it show precisely ten different digits?

TeX
TeX
22:04
2
Q: Input of files where spaces shouldn't be ignored: LaTeX3's \file_input impossible to use?

Denis BitouzéSuppose a class of mine written in LaTeX3 has to input a file myfile.tex where spaces shouldn't be ignored. Because \ExplSyntaxOn (by default enabled in such a LaTeX3 class) switches to a category code régime in which spaces are ignored, a workaround is to rely on: [...] \ExplSyntaxOff \input{myf...

2
Q: Match Kaplan-Meier in spreadsheet with lifelines python package

Doug FirUsing a well known Kaggle dataset on telco customer churn, I attempted to create a Kaplan-Meier (KM) curve and then compare it with python's lifelines package. The curves start out similar but diverge as tenure increases. I uploaded the data into a Google Sheet and used formula to create the km s...

CS
CS
22:24
1
Q: Why does PoE not leverage twisted pairs for better power delivery?

BlueAccording to https://en.wikipedia.org/wiki/Power_over_Ethernet#Pinouts, in mode B with power on separate cables from the signals, Power over Ethernet uses the two blue conductors for DC+ and the two brown conductors for DC-. Would it not be better to use the two striped conductors for DC- and the...

2
Q: Is Girard's Scapegoat theory of atonement an acceptable view in Catholicism?

ConnieMnemonicObviously, we can't say for sure; all these theories float around and from what I can tell, the Church has no concrete position on the matter. I find Girard's scapegoat theory of atonement highly compelling, and I'd like to discuss it more with others. But first, I'd like to have some confidence ...

TeX
TeX
4
Q: Adding letters to the left of subfigures

Carlo MeloniI need to add letters to the left of my subfigures, like this: I’m not sure how to do this. Currently, I have added the figures as subfigures using the following code: \documentclass{article} \usepackage{graphicx} \usepackage[T1]{fontenc} \usepackage{caption} \usepackage{subcaption} \begin{doc...

CS
CS
22:47
1
Q: Understanding efficiency curves of a DC DC converter

GNZAbout this DC-DC converter regulator, I have the 5V output 1A model. There are some efficiency curves depending on the input voltage. What does that mean in my case where the input voltage will be 19V?

1
Q: Loertscher and Muir - Feasibility of a Mechanism and the Birkhoff-von Neumann Theorem

Joseph BasfordIn Loertscher and Muir "Optimal Hotelling Auctions" (Working Paper, see Loertschers website at this link), they have a setup where types are distributed according to CDF $F$ which has density $f$ with full support only over $[0,1]$ (representing their position on a Hotelling line). There are $N$ ...

Vi
Vi
23:33
1
Q: Using readline.nvim with the lazy plugin

user3236841I am new to LazyVim and I have come across readline.nvim which would help me to use readline in Neovim (same as in the bash prompt, which is why I would like to do this) However, the instructions are written there in vim-plug and I am using LazyVim and so I need to write the instructions in the l...


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