Sorry for the convoluted title but what software do people use when placing physical components on PCB's? Looking for something to highlight all 10k resistors or 1nF capacitors as examples to speed picking and placing by hand. Impossible to Google as all answers point to design software. I'm usin...

This was a question asked to us by our client.The question is 'We have a TVS diode with a break down voltage of 31V.When a pulse of amplitude 31.7V and a duration of 100ms second is applied the diode will go break down.What will be the current flowing through this diode at this time' May I know y...

I'm curious to understand how the Doppler shift phenomenon occurs and is mathematically expressed for a single photon emitted by a stationary single photon emitter, such as a quantum dot, and observed by a relatively moving observer (of any type). Is the mathematical expression for the Doppler fr...

I read about the capture of Daniela Klette, via Google Translate: In Germany, the criminal police claimed that they were not authorized to use this type of AI [PimEyes], due to data protection requirements. Original text: En Allemagne, la police criminelle a affirmé qu’elle n’était pas autoris...

In a one shot my DM ran, one of the other players decided to play as a high elf that thought they were a cat and ended up being a drunk 'cat'. I asked if I could use Lesser Restoration to cure the drunkenness (mainly because the player was being very annoying with the drunk cat), under the argume...

I am a PhD student and I wrote a journal paper recently on a topic. The methodology and the results are completely my own. The idea is also my own. The way I build my measurements are based on a research I carried out with a master's student during his master's thesis. However, later developments...

For a sine wave, $A \sin(\omega_0 t)$, with an amplitude $A$, after FFT and calculating the magnitude spectrum we can get a single peak with a height also equal to $A$. This requires proper scaling. Let us say we have an exponentially decaying sine wave $x(t)$, then, the "recovered" peak intensit...

I've assembled several identical boards and one of them does not work. Visual inspection does not show any bridges, but it is hard to tell with LQFP pitch. The voltage on power rail was zero. I've removed 3.3V DC-DC chip and measured the resistance between power rail and ground. 0.1 Ohm seems to ...

Is the use of word malecha in hindu texts similar to kafir in islam and heathen in Christianity? I want to know definition of malecha from scriptures. Also I am bit confused like malecha is a tribe or someone who denies vedas or someone who is wrong doer(mahapataka)

I know this question is probably stupid, but I couldn't find anything for either side. I don't think it's in one of the books that D&D Beyond provides for free. I could also just be blind and not see it. I'm mainly talking about flight speed and burrow speed, whether it's granted by a spell or b...

A BOOK YOU CAN READ TO YOUR KIDS. On one of those dim nights, Ed and Nita thought that it feels like a perfect night to paint pictures. After Ed finished painting his, he asked Nita what she thought. “Er.. remove that rubber duck from the sofa. It's bringing my attention away from the elk floor l...

Let's take a compound propositions Either it is below freezing or it is snowing. Now if, $p$: it is below freezing $q$: it is snowing Question Link: https://gateoverflow.in/42720/kenneth-rosen-edition-6th-exercise-1-1-question-7-page-no-17 Will it be $p \vee q$ or $p \oplus q$? There are some i...

I moved my saddle as far as it can go towards the neck, and still the intonation is bad. Please do not write about moving saddles, because I did that. I would be grateful if you could tell me about other possible solutions. It is a 0.009 string on a Yamaha Pacifica 112j. I can not take an exact m...

I stumbled upon a problem which seems easy but is actually hard to answer. It involves the sudoku game and a commonly used custom constraint rule called "entropic lines". The rules of a normal 9x9 sudoku puzzle are: Each row and column and 3x3 box contain the digits 1-9 once each. The rules for e...

Is it possible to do a Remote Desktop Connection from a PC with windows 11 Home Edition to a PC with windows 11 Pro Edition ? I can't find Remote Desktop connection on Home Edition.

I have my mesh here, NSFW sorry in advance. I am trying to combine everything into one mesh so I can rig it for lethal company easier. My issue is that when I go to combine the meshes and their UV maps the meshes that have two parts like the armor braces and the eyes they combine into one. Here I...

I would like to create a command that can multiply consecutive integers together (if it doesn't already exists). How do I create a command, say \multiply{<first_number>}{<last_number>}, using LaTeX3, that multiplies all the integers from <first_number> to <last_number>? Example: I would like \mul...

So I just finished watching "dark matter is not a theory". An understanding I gleaned from it is that dark matter is observed from the discrepancy between the amount (or perhaps energy? in terms of spectrum) of light a galaxy is emitting, and its rotational speed. These are both indications of ma...

We have been taught to look for plane of symmetries in inorganic complexes. If there is a plane of symmetry then the complex is optically inactive, otherwise it is optically active. In this particular complex, I am unable to find the plane of symmetry. I have tried creating mirror images in my he...

I am trying to solve $$\sum_{j=0}^{n-1}j2^j$$ but I don't know how to proceed with the $j$ in front of $2^j$. What is making it difficult for me is it is an indexing variable, so I don't think I can factor it out. How would I proceed? Thank you

I have a shell script meant to run within vim. I'd like it to insert the name of the file I'm editing but I can't figure out how to do it. Is there a way to, perhaps, call bufname() from within a shell script?

The Torah in Deuteronomy 10:16 states וּמַלְתֶּ֕ם אֵ֖ת עׇרְלַ֣ת לְבַבְכֶ֑ם וְעׇ֨רְפְּכֶ֔ם לֹ֥א תַקְשׁ֖וּ עֽוֹד׃ Cut away, therefore, the thickening about your hearts and stiffen your necks no more. I’m curious therefore, is there a heter for the hunchback of notre dame to convert to Judaism? Th...

I was thinking about having a character that's pretending to be something they're not, kind of like the '3 goblins in a trenchcoat' meme, but my character is one of the ones with an increase in stats when said stats are rolled. I was wondering if I could feign not having those increases to my sta...

I understand that noise $z$ serves as the input to the generator. Noise $z$ is essentially a vector of random numbers, typically from Gaussian distribution with chosen size of like $100$. However, I don't understand how different noise can produce different images. Sorry if this sounds like stupi...

It seems there is no consensus over the exegesis of 1 Corinthians 7:36. Here is a sample of translations: New American Standard Bible (NASB): "if she is past her youth" English Standard Version (ESV): "if his passions are strong" New King James Version (NKJV): "if she is past the flower of youth"...

The Schwarzschild solution shows decreasing velocities with larger orbits - and needs help from dark matter or MOND to explain galaxies. Apparantly no Einstein vacuum solution with flat velocities is known but there seems to be also no proof that there cannot be one. Regardless of what other oddi...

Well may the court be dim, with wasting candles here and there; well may the fog hang heavy in it, as if it would never get out; well may the stained-glass windows lose their colour and admit no light of day into the place; well may the uninitiated from the streets, who peep in through the glass...

Background The newest version of the C standard, C23, adds preprocessor macros like INT_WIDTH, ULONG_WIDTH, and SIZE_WIDTH that tell you the bit width of various integer types (here, int, unsigned long, and size_t, respectively). However, while the majority of us are stuck with pre-C23 compilers...

I have the following circuit: An input that can go negative (+/-5 V sine wave), and two inverting op-amps. The second op-amp is "current buffered" and is driving the base of a BJT. Here is a SPICE simulation screenshot: In practice, for the real circuit, the input should not go negative, but it...

42 They were continually devoting themselves to the apostles’ teaching and to fellowship, to the breaking of bread and to prayer. 43 Everyone kept feeling a sense of awe; and many wonders and signs were taking place through the apostles. 44 And all the believers were together and had all things ...

Genesis 1:28: וַיְבָ֣רֶךְ אֹתָם֮ אֱלֹהִים֒ וַיֹּ֨אמֶר לָהֶ֜ם אֱלֹהִ֗ים פְּר֥וּ וּרְב֛וּ וּמִלְא֥וּ אֶת־הָאָ֖רֶץ וְכִבְשֻׁ֑הָ וּרְד֞וּ בִּדְגַ֤ת הַיָּם֙ וּבְע֣וֹף הַשָּׁמַ֔יִם וּבְכָל־חַיָּ֖ה הָֽרֹמֶ֥שֶׂת עַל־הָאָֽרֶץ׃ God blessed them and God said to them, “[In] Peru, increase; fill the earth an...

In my world I need to feed a colony of Kobolds. I'm modeling my Kobolds' dietary requirements on humans. My question is whether or not the following foodstuffs would meet the dietary needs of human adults. My world has a thermal fed small geyser (think 'Old Faithful') that heat-feeds a colony of...

I want to understand the relation between the Wilsonian RG and the usual QFT RG approach. Several questions have been asked, such as this and many others, yet I don't find a conceptual answer to what follows. In the computation of loop integrals in QFT, in order to tame divergences a regulator $\...

Two different plumbers have stated that we have, about 3 feet under the house, a sewer pipe that has tree roots invading, and that this is the reason for our frequent clogs. The fix for this is not something I can afford right now. In the meantime, I would like to know what less expensive tempora...

When we see the description of a movie at databases such as IMDb and Letterboxd, does the available length contains the credits? What's considered the official length of a movie?

I'm presently working in a non-ZF set theory, where there are proper classes. (Think MK or VNBG.) And I'm interested in how to think about the possibility (or impossibility) of proper classes with cardinalities which are in some sense different. (So in this set theory we drop the von Neumann a...

Why are supercritical airfoils not used in GA aircraft? The 787 is assumed to use a supercritical airfoil, so why don't GA aircraft use them? My guess is that they're harder to manufacture, and a lot of GA aircraft today are older. (Not sure though) (I'm mainly referring to smaller propeller plan...

I am trying to graph a region for a contour integral, my attempt: \documentclass[tikz,border=3mm]{standalone} \begin{document} \begin{tikzpicture}[trig format=rad] \usetikzlibrary{angles,quotes} \draw[->] (-5,0) -- (5,0) node[below]{$\Re$}; \draw[->] (0,-5) -- (0,5) node[left]{$\Im$}; \foreach \...

I bought this house about a year ago and noticed these boards on the garage floor covering an area where the concrete is crumbled, it's in the corner of the garage. Based on the condition of the concrete and the walls around it I assume it is or was some sort of water issue. I'm not sure if the i...

Normally, plumbing (drain and supply) runs inside wall, but is it permitted, by national building code, to run plumbing between wall and cabinet (not inside wall)? Below is a crude cartoon of what I want to do.

On my test server (SQL 16.0.1110.1), have this table defined this way: CREATE TABLE [dbo].[mytable]( [ID] [bigint] IDENTITY(1,1) NOT NULL, [IDOpSt] [bigint] NULL, [Order] [smallint] NULL, [TopPosition] [bit] NULL, [Caption] [varchar](500) NULL, [PrimaryField] [bit] NULL, ...

Tolkien painted a watercolour picture of "A Conversation with Smaug" for the cover of The Hobbit. In the lower left corner there is a pot containing a pile of gold with an Elvish(?) inscription on it. Is there a translation?

I am building a parts inventory system, and have a transaction table that stores how often an item in used. Let's say Item A is used 10 times in 2021, 20 in 2022, and 30 in 2023. Of course each transaction is on a different day throughout each year. So, by using SELECT ItemNumber, SUM(QuantityU...

Given the polynomial $$ f(x)=x^n+a_1 x^{n-1}+a_2 x^{n-2}+\cdots+a_n $$ with real coefficients, and $a_1^2<a_2$, show that not all roots of $f(x)$ can be real. I tried to solve using vieta formula.But I can not proceed further.

In Harry Potter and the Half-Blood Prince, when Dumbledore is about to show Slughorn's memories to Harry, it is mentioned that Harry noticed that the contents proved difficult to empty into the Pensieve, as though they had concealed slightly; did memories go off? Is it ever explained why the me...

I am very new to linux so this is probably a silly question. I am getting used to the various desktop environments, and different frameworks around linux. I am using KDE (on kubuntu) and installing an application via flatpak. While installing I see the following prompts ID ...

I'm currently writing an MVC application and I need a class that can: A: get, add and remove data(specifically a TreeSet of sorted strings that I want stored in memory, but I doubt the data itself is relevant.) B: The data must be accessible to multiple controllers. C: There can "presumably" only...

In this box, I have a green ground wire nut with a through-wire connected to the metal box ground nut that connects it to four other ground wires on conductors entering the box. I connected three more ground wires to the through-wire with a 4-way push connector that will connect to the ground nut...

Sword Coast Adventurer's Guide is very vague about what year this happened: Nearly half a century ago, Mount Hotenow (the nearby volcano that perpetually heats the river flowing through the city) violently erupted, destroying much of Neverwinter, killing thousands, and leaving in its wake a grea...

\documentclass{report} \usepackage{savesym} \savesymbol{bot} \usepackage{MnSymbol} \restoresymbol{MN}{bot} \begin{document} sda $\bot$ \end{document} This produces instead of (when commenting the \usepackage{MnSymbol}) I am very confused. My goal is to use the standard \bot symbol while also u...

What is the name of the book that had the pyramids as chee-op power stations?

I've seen people in security saying URLs with Cyrillic characters are dangerous. If you ever type such characters on a browser you'd see they break into crazy unrecognizable URLs that have nothing to do with the original name. Another attack would be to put them into the href HTML tag and another...

We often have to put somewhat blind faith in the people who serve us---car mechanics, HVAC technicians, doctors, etc. Normally I research things a great deal before making a decision or trusting advice. I've come to realize with my fiduciary advisor that despite my research, I will never have eno...

During my research, I was analyzing a linear system with characteristic polynomial of six order, $p(x)=x^6+3ax^5+3a^2x^4+a^3x^3 - a^3b_1b_3b_3$. I used Mathematica and it found all roots as the following: I was quite impressed since it is not obvious for me how to factor this equation. I am curi...

I had some new youngish fruit trees, I am not sure which variety this was... (plum, I think) Anyways I have issues where deer will come and bite off a branch, Later in the fall they bit this piece off and I tried to clone it... Cut it to a nice shape, cut little notches up the shaft a bit and roo...

Having the following simple structure: project main aaa aaa test ddd ddd pom.xml <--- unique regular file If the current directory is project and if is executed the ls command appears main pom.xml test Until here all is OK. Now, according with man ls about the d option exists: ...

Is there some doctrinal or historical or political reason that prevented this natural alliance from taking place? Are Protestants against the notion of the Pentarchy in general and not just against the papacy? If so, does this mean they see the Church as corrupt already before Emperor Justinian f...

I am using the physics package which adds the \derivative and \partialderivative commands, in addition to the \dv and \pdv commands which are just the shorthand versions. For those unfamiliar, these commands have a variable number of parameters which makes them even more useful. \( \dv{x} \\...

From this answer I am able to understand that if CM field discriminant for a particular curve is small then it provide us a fast endomorphism which in turn allow rho method to speed up by $\sqrt{\frac{1}{3}}$. What I cannot understand is: How one calculate this CM discriminant? Is this same as $...

I have this nerve plant (Fittonia albivenis) I got years ago. It grew pretty nicely for a while but I cut it back a bit and then has been declining ever since. It seemed to be improving though but now it seems to be stagnant. It doesn't seem to be dead since it's green with no yellowing or dead p...

I am planning to analyze experimental data using statistical methods, and I intend to perform analysis on repeated measurements using GEE (Generalized Estimating Equations) or RM ANOVA. Some of the measurements are all in proportion values (the number of individuals performing a specific behavior...

When dealing with a GEE features, I can get the name of my columns by calling propertyNames method. Problem is that this method also include all the system properties that are often irrelevant. How can I split them? Here is a small example: fc = ee.FeatureCollection("FAO/GAUL/2015/level2") feat =...

In the book "Mastering Bitcoin" (3rd edition), on page 46, there is an element nextblockhash in the block struct after issuing a getblock command, anyone can explain it and how to use it. You know this element will not be known in advance when constructing a block.

Challenge Given ASCII-encoded text input of any size, detect numbers between -1,000,000,000,000,000,000 and 1,000,000,000,000,000,000 exclusive and rewrite them with thousands separators. Use commas only and ignore leading zeroes. Leave the rest of the input unchanged. Test cases Input Output ...

Let $a^2 + b^2 + c^2 = X^2$ and $$(ab)^2 + (ac)^2 + (bc)^2 = Y^2$$ Such that $a,b,c,x,y$ are all Integers How to find All non trivial solutions ? Is there any parametrization which gives many solutions ? What is the smallest solution for above equation ?

For my dissertation, I am currently evaluating pharmacy students' perception on two distinct academic electronic health record systems - A and B. The students were asked to identify how much they agreed to a set of statements via a 5 point Likert scale (Strongly disagree=1; Disagree=2; Neither ag...

In the book "Mastering Bitcoin", 3rd edition, on page 50, Example 3-6 shows Total value in block: 10322.07722534. This is block 775072, and blockchain.com shows this block’s Output Value is 5,863.01 BTC. What could explain this difference?

I found the perfection to my problem but it's using something other than Tikz. Does anyone know how to change it to tikz. Here is the code used: \documentclass[svgnames]{article} \usepackage{mathtools} \usepackage{pst-node, auto-pst-pdf} \begin{document} \begin{postscript} \begin{gather*} ...

Depending on the combination of packages loaded, the width of \widetilde can be erroneous. I guess this is a bug in koma, but it as also somehow affected by the package lmodern, albeit only when combined with koma. I assume I need to find a replacement for lmodern or quit using koma. Is there ano...

Given a continuous time signal $f(t)$, we can sample it signal by multiplying with a Dirac comb (impulse train) $$\bar{f}(t) = \sum_{n=-\infty}^{\infty} f(nT) \delta(t-nT) \tag{1}$$ where each impulse is spaced by $T$ (Lathi. pp 319). I have a concern about this claim. When sampling a signal, w...

There are tools like OSINT or just plain old web-scraping which could allow you to harvest a lot of data. Let’s say you never harvest data in an illegal way, so technically all the data you compile is public information. However, you managed to extract data from so many fragmented parts of the in...

My question is motivated by Eleonore Stump's video Can Philosophy of Religion Find God?, suggested by this answer. In the video, Stump elaborates on how philosophy of religion can be helpful in understanding facts about God, likening it to acquiring biographical information about a third person, ...

In RFC 5280 is written that for example the X520OrganizationName can use one of the following encodings: X520OrganizationName ::= CHOICE { teletexString TeletexString (SIZE (1..ub-organization-name)), printableString PrintableString ...

Our colleague has passed away in autumn. He was active till the last days of his life; respectively, several texts of his authorship remain unpublished. We would like to publish them; yet the problem is that some of them are far from being finished (in particular, some of the sections currently ...

A while ago I had to pick between a few post-doc offers. I ended up choosing one in a modestly interesting project under the hospice of what you'd call a high-profile university, with seemingly strong PIs (decent citation counts, many annual publications in top-tier conferences) that I did not, h...

“But this was not a question which could be disposed of so easily; it raised in its wake other, more troubling questions. ” I find the structure of the sentence above hard to understand. I even doubt if it is correct grammarly. Should it be "it raised in the wake of other, more troubling questions"...

Could anybody please tell me the difference between these two fields? time mtime Thanks in advance!

Many of the outer trappings of the popular fantasy novels by J.R.R Tolkien, (John Ronald Reuel Tolkien, that Reuel was one of the alternate names of Yitro, Moshe's father-in-law) The Hobbit and The Lord of the Rings trilogy and even his posthumously published The Silmarillion appear to have simil...

There are 2000 treasures, among which only one is real and the others are fake. There are also 2000 knights, among whom one always tells the truth while the others always lie. You can ask the knights questions to which they can only answer 'yes' or 'no'.What is the minimum number of questions nee...

Has anyone tried defining a complex version of the Cahiers topos? If we take the definition of $C^\infty$-rings, replace "smooth" with "holomorphic" (of course, one has to take care to replace the domain $\mathbb{R}^n$ with an open subset of $\mathbb{C}^n$ - or perhaps a Stein manifold?), replace...

I would like to be able to replace a_e with aₑ using prettify symbols. However, if I add ("_e" . ₑ) to the prettify symbols alist, it will show the subscript e if _e is surrounded with spaces but not if a letter precedes the string as in the case of a_e. How can I make the visual replacement even...

In apex, I have a Set<String> and further in the code, I'm converting this Set to String using .toString() method. Set<String> fields = new Set<String>(); String query = 'SELECT ' + fields.toString().replace('}', '').replace('{', '') + ' FROM Account'; It was working fine, till I added a new fie...

I’m looking for a fast library for backtest in R that supports limit orders, stop-losses, and take-profits. The library should be optimized for repeated historical testing and ideally ported from fast languages such as C++ or Rust. I don’t need complex combinations of trading systems or multi-cur...

I listened to an eight year old read this kids book to me. He had brought it home from school to read. It had lots of illustrations which the kid loved showing to me. I think the cover may have been green. The book was paperback. I think the title was a sentence, not a single word. A group of b...

I hardly see what kind of advantage a vertical bar chart could have over a horizontal one (edit: by "horizontal bar chart", I mean a chart with bars oriented horizontally). On the other hand, vertical bar charts are so prevailing that it makes me wonder if I'm just lacking imagination or experien...

One can find advice on prompt engineering telling basically the following thing: if you are seeking advice about a topic X, start your prompt to an LLM by You are an expert in X, you have pedagogical skills, and you are very good at synthesizing information blahblahblah... I don't understand wh...

I am trying to make this mesh into a curved leave with the example shown in the image since I am trying to make a grass patch. Little added question: How do I make it look more natural?

Forbes' political staffer Sara Dorn writes, "Instilling age- and term-limits is also a logistically complicated process that would likely require a constitutional amendment, which would need either the votes of two-thirds of both the Senate and the House, followed by approval from three-fourths ...

I am trying to write a table to show the following game. But whatever I do, doesn't work. Can someone help please? I don't care about the colors. All in black is fine. I also would like its variant where T,M,B and L,C,R are in the table, i.e., is in boxes. This is the code I have attempted, and ...

In Megilla (7b) the Gemara states: אמר רבא: מחייב איניש לבסומי בפוריא, עד דלא ידע בין ארור המן לברוך מרדכי Rava stated: One must get drunk in bed, to the point where he doesn't distinguish between "cursed is Human" and "blessed is Mordechai". What's the significance of getting drunk in bed? As ...

Is “Israel” a three word hybrid of “Isis”, “Ra”, and “El”? If so, is Isis a representation of chaos and destruction and Ra representation of order and construction? In this case, does the name Israel mean that “El” presides over chaos and order? In Jacob‘s case (Genesis 32:28) his name is chan...

Working with a fluid sim of water flowing in a stream. All is working well except I have to wait for about 200 frames before the water makes it all the way to the end and reaches a stable point where I have the right amount of water throughout the scene. Clearly this is wasted time wrt baking, ...

I want to see if a specific list is part of another list and get either True or False. As an example: list1={1,2,3,4} list2={1,2} list3={1,3} list2 is now part of list1 and the argument should be True, while list3 isn't part of list1 as it is not the correct order. I tried several Pattern Mactch...

Diane Abbott, MP has been in the news recently following a racist verbal attack against her by a leading Conservative donor. At Prime Minister's Questions on 13 March 2024, the Leader of the Opposition, Keir Starmer, asked about the issue directly, but Abbott herself was not given a chance to spe...

How can I say "lab equipment" in German? By that I mean items like centrifuges, blotting and chromatography devices, autoclaves. Not furniture and not clothes. I am picking between Laborausrüstung and Laborausstattung. But I found other words: Laborbedarf and Laboreinrichtung. What is the differe...

When multiplying two rasters together using code in PyQGIS, the resultant raster is much larger than expected. Each input raster takes up ~ 11KB as .tif files, but when I multiply two together it becomes a much larger .tif file, nearly 20MB, which seems way too big considering the input sizes. He...

I've reading many entries about this and the dominant opinions seems to be "no", here there are some entries The use of the scientific method of theorising based on empirical data gained from rigorous and repeatable experimentation. 2) Using this method to create theories to explain natural phe...

I was recruited by an advisor who retired midway during my phd but agreed to keep on advising me with the help of a co-advisor. This co-advisor quit one month ago. I am currently without a main advisor. I was on a funded three years PhD program with a low stipend in a foreign country but did not ...

Some laws are obviously contradicted by higher laws, such as bills of attainder being prohibited explicitly by the US constitution. Say some level of government (state, federal, or local) ignores this and passes a bill of attainder anyway: "Jimantha Higgins is guilty of arson by this bill of atta...

I have a portable disk with contents like this: /media/usb1/CBCradio3/1.wav /media/usb1/CBCradio3/2.wav /media/usb1/CBCradio3/3.wav /media/usb1/CBCradio3/4.wav /media/usb1/podcasts/1.wav /media/usb1/podcasts/2.wav /media/usb1/podcasts/3.wav And a hard drive with contents like this: /home/user/Mu...

I've been thinking about the problem of free will. In a deterministic universe, it seems like everything is just dominoes falling, one after the other. No room for choice. But what about quantum mechanics and superposition. A particle can be in two states at once, until you measure it. And then i...

In a local class file I maintain, we have a system that can automatically add up numbers (in our case, marks for an assignment) and then output the sum. I would like to develop it to add up limited non-integer input (and gracefully handle non-numeric input). Specifically, I want it to handle half...

John 19:14-15 NIV 14 It was the day of Preparation of the Passover; it was about noon. “Here is your king,” Pilate said to the Jews. 15 But they shouted, “Take him away! Take him away! Crucify him!”. “Shall I crucify your king?” Pilate asked. “We have no king but Caesar,” the chief priests answe...

In the documentation of ColorData I found this esthetically beautiful image created by ReliefPlot. ReliefPlot[ Table[RandomReal[] (Sin[x + y^2] + Sin[x^2 + 3 y]), {x, -3, 3, .01}, {y, -3, 3, .01}], ColorFunction -> ColorData["SouthwestColors"]] But if we do not use RandomReal[] in the c...

I know this is probably a real simple question, but I want to copy newer files from one server directory to another and preserve the datestamp. I've tried cp -p /source/records_added*.csv /dest/targetdir and -pu and -pf The files that are being copied end up with the time they were copied to th...

Melissa has noticed that certain positive integers can be written as the product of other integers, none of which uses any of the digits in the number itself, 512, for example (512 = 4 x 4 x 8). Ten consecutive positive integers cannot all be one of Melissa's numbers. What about nine? And if not,...

I'm currently reading Kaplan's On The Logic of Demonstratives (1979). He considers the example (1) I am here now. and on page 84 he argues that (b) In almost (if not all) contexts, an utterance of (1) expresses a contingent proposition. Considering the phrase "In almost (if not all) contexts"...