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finance_557 | finance | How fast is QuickFix ? | In my firm we are beginning a new OMS (Order Management System) project and there is a debate whether we use Quickfix or we go for a professional fix engine? Because there is a common doubt that QuickFix is not enough fast and obviously we will not get any technical support. I heard that in BOVESPA it has been used for... | 41 | [
"fix"
] | {
"A": "There are some cases where you can blend your portfolios using weights directly. One case involves corner portfolios . In this case a linear combination of weights is also efficient. Another case is where you can treat the two separate weights you have produced each as distinct portfolio under the assumption ... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://quant.stackexchange.com/questions/557/how-fast-is-quickfix |
law_37912 | law | What is the purpose of a disclaimer like "this is not legal advice"? | If someone who is not a lawyer is giving out legal advice, does it make any difference if they include a disclaimer along the lines of "this is not legal advice"? For the purposes of this question, I assume legal advice means one party instructing another party on how to comply with laws (like a consultant might do). D... | 36 | [
"european-union",
"germany",
"lawyer",
"disclaimers",
"unlicensed-practice"
] | {
"A": "There isn't any indication in that news story that the disabled son was anywhere nearby. I agree the situation you describe sounds like a legitimate use of the placard, but it seems in this situation, the placard was being used in a manner totally unrelated to the transport of a disabled person. My guess is t... | D | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://law.stackexchange.com/questions/37912/what-is-the-purpose-of-a-disclaimer-like-this-is-not-legal-advice |
engineering_22072 | engineering | Fracture patterns in tempered glass | While browsing a local news site, I stumbled upon this picture of a broken bus door. The glass was fractured due to a rock impact. As far as i know there are no heating elements on the window section in the picture. Now, what interests me is the apparent periodicity and structure of the fracture pattern. Are periodic f... | 18 | [
"glass"
] | {
"A": "It's an artifact of production - in particular, the construction of the conveyor belt of the machine performing the quenching process. The pattern can be observed through a polarizing filter in the undamaged glass: source and it's a result of the structure of the conveyor belt through which the surface of the... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://engineering.stackexchange.com/questions/22072/fracture-patterns-in-tempered-glass |
engineering_179 | engineering | Derivation for bridge natural frequency estimate in Eurocodes | The Eurocodes gives the following equation for estimating a "simply supported bridge subject to bending only"*: $$n_0 = \frac{17.75}{\sqrt{\delta_0}}$$ Where $n_0$ is the natural frequency in hertz $\delta_0$ is the deflection at mid-span under permanent actions in mm The equation is seemly plucked from thin air, and t... | 13 | [
"bridges",
"dynamics",
"eurocodes"
] | {
"A": "The picture, below, of the exaggerated long section of the Channel Tunnel was taken from Wikipedia . Full-sized image here . Some of the limiting factors for the Channel Tunnel are: Railways don't like steep gradients The tunnels comprising the Channel Tunnel were excavated using tunnel boring machines (TBMs)... | D | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://engineering.stackexchange.com/questions/179/derivation-for-bridge-natural-frequency-estimate-in-eurocodes |
medicine_22796 | medicine | What is the main way COVID-19 spreads? | Reading numerous news articles about COVID-19, I got confused as to what is its main transmission route. In particular, I am confused as to whether it is direct landing of respiratory droplets in mouths and noses, contaminated surfaces, aerosols (i.e., suspensions of the virus in the air rather than respiratory droplet... | 21 | [
"covid-19",
"infection",
"virus",
"epidemiology",
"coronavirus"
] | {
"A": "Ear tubes do many things to help ear infections. The most important things they do are draining the ear of fluid and ventilating the ear. Overall, this will help your child hear better. The tubes also stop fluid from building up behind the ear drum, which should help prevent the ear infections. Stuff to watch... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://medicalsciences.stackexchange.com/questions/22796/what-is-the-main-way-covid-19-spreads |
medicine_1258 | medicine | Do you bleed to death after your penis is cut off? | I wonder If a person without knowledge and tools cuts off somebody's penis and then doesn't call an ambulance immediately, is there a chance a person may not bleed to death within a short time? I would also like to know if you can still urinate, while the cutting is done without some tool you put into urethra? I haven'... | 19 | [
"removal",
"urinary-system",
"penis",
"death"
] | {
"A": "Assuming the person is not taking anticoagulants, it's actually quite difficult to bleed to death from dismemberment of small members (hands, feet, penis, ears, nose, etc). Even large members such as arms and legs are often survivable because the body is very good at protecting itself from blood loss. For exa... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://medicalsciences.stackexchange.com/questions/1258/do-you-bleed-to-death-after-your-penis-is-cut-off |
engineering_3959 | engineering | What are left justified and right justified ADC results? | The TI MSP430F20XX series has a 12-bit internal ADC output, which is right-justified. What is the difference between a left-justified output and a right-justified output? What are their pros and cons? | 13 | [
"electrical-engineering",
"embedded-systems"
] | {
"A": "If you consider only the static forces then indeed the thickness might seem over-engineered. However, engine blocks are not statically loaded. They operate in the range of a few hundred to a few thousand rpm (Revolution Per Minute), so there are dynamic considerations here. Fatigue When materials are subjecte... | B | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://engineering.stackexchange.com/questions/3959/what-are-left-justified-and-right-justified-adc-results |
cybersecurity_39231 | cybersecurity | How do I deal with a compromised server? | I suspect that one or more of my servers is compromised by a hacker, virus, or other mechanism: What are my first steps? When I arrive on site should I disconnect the server, preserve "evidence", are there other initial considerations? How do I go about getting services back online? How do I prevent the same thing from... | 190 | [
"system-compromise"
] | {
"A": "Originally from serverfault. Thanks to Robert Moir (RobM) It's hard to give specific advice from what you've posted here but I do have some generic advice based on a post I wrote ages ago back when I could still be bothered to blog. Don't Panic First things first, there are no \"quick fixes\" other than resto... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://security.stackexchange.com/questions/39231/how-do-i-deal-with-a-compromised-server |
cybersecurity_174850 | cybersecurity | Is public Wi-Fi a threat nowadays? | In my opinion, arguments we have been using for years to say that public Wi-Fi access points are insecure are no longer valid, and so are the recommended remedies (e.g. use VPN). Nowadays, most sites use HTTPS and set HSTS headers, so the odds that someone can eavesdrop someone else's connection is very low, to the poi... | 143 | [
"wifi",
"threat-mitigation",
"threat-modeling"
] | {
"A": "Diffie-Hellman is a way of generating a shared secret between two people in such a way that the secret can't be seen by observing the communication. That's an important distinction: You're not sharing information during the key exchange, you're creating a key together. This is particularly useful because you ... | B | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://security.stackexchange.com/questions/174850/is-public-wi-fi-a-threat-nowadays |
cybersecurity_52361 | cybersecurity | Is Adblock (Plus) a security risk? | My email-provider's website ( http://www.gmx.de ) recently started linking to the (German) site http://www.browsersicherheit.info/ which basically claims that due to its capabilities to modify a site's appearance, Adblock Plus (and others) might actually be abused for phising. Here's a quote from that site plus its tra... | 171 | [
"web-browser",
"phishing",
"browser-extensions",
"threats"
] | {
"A": "I was one of the implementers of JScript and on the ECMA committee in the mid to late 1990s, so I can provide some historical perspective here. The JavaScript Math.random() function is designed to return a floating point value between 0 and 1. It is widely known (or at least should be) that the output is not ... | B | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://security.stackexchange.com/questions/52361/is-adblock-plus-a-security-risk |
law_45484 | law | At what point can you walk out of a restaurant if they make you wait to pay the bill? | The other day, I ate at a restaurant; the food was fine, and I got to paying the bill. Their payment system went down. They couldn't accept cards; only cash, and I didn't have the cash on me for the bill. In the end, their payments system was down for about 45 minutes, with several diners being forced to wait around. T... | 76 | [
"united-kingdom",
"commerce",
"payment"
] | {
"A": "at what point can you just leave? Is it always technically illegal in the UK to leave without paying the bill? Probably depends on what you mean with just leaving. If just leaving translates I haven't paid and I won't pay (because of the hassle with the card) then that's probably Making Off Without Payment, s... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://law.stackexchange.com/questions/45484/at-what-point-can-you-walk-out-of-a-restaurant-if-they-make-you-wait-to-pay-the |
finance_2870 | finance | Why does the minimum variance portfolio provide good returns? | I've been a researching minimum variance portfolios (from this link ) and find that by building MVPs adding constraints on portfolio weights and a few other tweaks to the methods outlined I get generally positive returns over a six-month to one year time scale. I am looking to build some portfolios that are low risk, b... | 45 | [
"portfolio-management",
"optimization",
"modern-portfolio-theory",
"covariance"
] | {
"A": "Short of having a 'reasonable' predictive model for expected returns and the covariance matrix, there are a couple lines of attack. Shrinkage estimators (via Bayesian inference or Stein-class of estimators) Robust portfolio optimization Michaud's Resampled Efficient Frontier Imposing norm constraints on portf... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://quant.stackexchange.com/questions/2870/why-does-the-minimum-variance-portfolio-provide-good-returns |
law_1639 | law | What is the legal take on the trolley problem? | From the Wikipedia page on the trolley problem: There is a runaway trolley barreling down the railway tracks. Ahead, on the tracks, there are five people tied up and unable to move. The trolley is headed straight for them. You are standing some distance off in the train yard, next to a lever. If you pull this lever, th... | 42 | [
"united-states",
"criminal-law",
"trolley-problem"
] | {
"A": "Short Answer Applicants are required by military regulation to have a percentile score on a standardized test called the ASVAB that is 31 or more, which is roughly comparable to an IQ score on the Stanford-Binet scale of a little bit less than 92, for high school graduates seeking to enter the Army or Navy (o... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://law.stackexchange.com/questions/1639/what-is-the-legal-take-on-the-trolley-problem |
engineering_2017 | engineering | What is a Spiral Curve, and How is it Different from a Normal Curve? | I've heard the term spiral curve used to describe a section of highway that is more aesthetically pleasing to the driver's eye. However, I believe I've driven on enough road to say that I can't definitively tell the difference between any given curve other than how "sharp" it is. Could anyone explain how one can determ... | 13 | [
"civil-engineering",
"highway-engineering",
"surveying",
"rail"
] | {
"A": "Water meets the low compressibility requirement, but there are many other considerations in the design of a hydraulic system: Boiling point/vapor pressure: If the system warms up during operation, the fluid may boil, which results in high compressibility and thus decreased effectiveness of the hydraulic syste... | D | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://engineering.stackexchange.com/questions/2017/what-is-a-spiral-curve-and-how-is-it-different-from-a-normal-curve |
engineering_34 | engineering | Do I need to worry about galvanic corrosion when inserting a steel bar through aluminium? | My design uses a round steel bar inserted through a hole in an aluminium component with a tight fit (no movement). The operating environment is dry, 20-40°C. Do I need to worry about galvanic corrosion, and if so how long will this last before starting to corrode? Also, what storage conditions should I avoid that would... | 13 | [
"steel",
"corrosion",
"materials"
] | {
"A": "Short answer : make it thicker. Long answer : The moment of inertia affects the beam's ability to resist flexing. Use one of the many, free, online moment of inertia calculators (like this one ) to see how increasing the height of the beam will have an exponential effect on increasing the stiffness of the bea... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://engineering.stackexchange.com/questions/34/do-i-need-to-worry-about-galvanic-corrosion-when-inserting-a-steel-bar-through-a |
medicine_788 | medicine | How much Vitamin B12 do you need? | Vitamin B12 is stored over a very long time such that vegans, for example, only get any signs or symptoms of B12 deficiency after a span of years, even though they have hardly any sources of the vitamin in their diets. The dose required daily to prevent disease seems to vary dramatically, or maybe it is very hard to de... | 14 | [
"obstetrics",
"b-12-supplements",
"absorption-absorb",
"apothecary",
"prenatal-vitamins"
] | {
"A": "The estimated daily requirement needed to maintain body stores of B12 varies, an estimate being from 2µg to 5µg, more if stores have been depleted in any way. It is estimated that the average person stores about 1 mg (1000 µg) of B12 in their liver, and other smaller amounts elsewhere. The recommended daily a... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://medicalsciences.stackexchange.com/questions/788/how-much-vitamin-b12-do-you-need |
law_83710 | law | At what point is uploading a movie with heavy compression not copyright infringement? | My friend recently linked me a GIF of the entire Shrek movie in 60x60 resolution . At the time of writing this, it has 12 million views on imgur. This got me thinking, could a copyright holder technically sue over the uploading of this GIF? I'm guessing yes, because it's still barely legible. But at what point are they... | 49 | [
"united-states",
"copyright",
"intellectual-property",
"internet",
"european-union"
] | {
"A": "Through the legal doctrine of \"transferred intent\", wherein if one intends to murder A, and undertake actions to kill A, but one's actions kill B, one has murdered B. Whatever crimes one would have committed, had one performed them on one's intended target, are considered committed against the individual on... | D | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://law.stackexchange.com/questions/83710/at-what-point-is-uploading-a-movie-with-heavy-compression-not-copyright-infringe |
cybersecurity_199971 | cybersecurity | Search for military installed backdoors on laptop | My laptop was confiscated by the military institute of my country and they made me to give them all my passwords (I cannot tell you the name of my country). They did not give it back to me for one week (yes, it was out of my sight for a while). I nuked it from orbit but I just realised that it was on sleep state for 2 ... | 198 | [
"malware",
"windows",
"privacy",
"backdoor"
] | {
"A": "Facebook is allowing you to make a handful of mistakes to ease the login process. A Facebook engineer explained the process at a conference . The gist of it is that Facebook will try various permutations of the input you submitted and see if they match the hash they have in their database. For example, if you... | B | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://security.stackexchange.com/questions/199971/search-for-military-installed-backdoors-on-laptop |
cybersecurity_138606 | cybersecurity | Help! My home PC has been infected by a virus! What do I do now? | This is an attempt to ask a canonical question as discussed in this old meta post . The goal is to create something helpful that can be used as a duplicate when non experts ask about virus infections. Let's say that I have determined beyond doubt that my home PC is infected by a virus. If necessary, you can assume that... | 183 | [
"malware",
"virus",
"antivirus",
"antimalware",
"virus-removal"
] | {
"A": "General SSL (and its successor, TLS ) is a protocol that operates directly on top of TCP (although there are also implementations for datagram based protocols such as UDP). This way, protocols on higher layers (such as HTTP) can be left unchanged while still providing a secure connection. Underneath the SSL l... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://security.stackexchange.com/questions/138606/help-my-home-pc-has-been-infected-by-a-virus-what-do-i-do-now |
finance_180 | finance | How are distributions for tail risk measures estimated in practice? | Let's say you want to calculate a VaR for a portfolio of 1000 stocks. You're really only interested in the left tail, so do you use the whole set of returns to estimate mean, variance, skew, and shape (let's also assume a skewed generalized error distribution - SGED)? Or would you just use the left tail (let's say the ... | 22 | [
"risk",
"probability",
"estimation",
"value-at-risk",
"expected-return"
] | {
"A": "Perhaps you may want to consider article by D. Levine - Modeling Tail Behavior with Extreme Value Theory who gives practicale example on how EVT can be used to calculate probabilities on returns in tails with use of the Pickands-Balkema-de Haan Theorem and generalized Pareto distribution. It also contains som... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://quant.stackexchange.com/questions/180/how-are-distributions-for-tail-risk-measures-estimated-in-practice |
law_41742 | law | How come the nude protesters were not arrested? | I read today about the Anti-Censorship Activists in New York (Warning! NSFW pictures inside link) who protested against Facebook while being totally nude out in the street. I'm also pretty sure public nudity is not allowed in the USA. How come they were not arrested or at least warned by police? Is there some exception... | 50 | [
"united-states",
"protest"
] | {
"A": "Public nudity is illegal in New York as it is in almost every U.S. jurisdiction. And, if the police had arrested the nude protesters, the arrests probably would have been upheld in court, because a ban on nudity in public would probably be viewed as a time, place and manner restriction on the freedom of speec... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://law.stackexchange.com/questions/41742/how-come-the-nude-protesters-were-not-arrested |
engineering_8619 | engineering | How to stop water flow in a siphon? | I have assembled a small DIY drip-irrigation system for my terrace garden. Please have a look at the attached image. I switch on a small pump to start the drip-irrigation system and then switch it off. But even after that, the water keeps flowing through the system and stops only when I physically lift the pump out of ... | 25 | [
"fluid-mechanics",
"siphon"
] | {
"A": "As other have pointed out, the main utility is to allow easier cleaning of the tank cars from sediment (solid precipitates). Usually, there is a drain in the lowest point. The reason that it is in the middle is that in this way, you can allow double the incline compared to if you had the drain at one of the e... | B | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://engineering.stackexchange.com/questions/8619/how-to-stop-water-flow-in-a-siphon |
medicine_14355 | medicine | Why do drugs expire? | I've googled through internet, and all I found was "what expiration dates mean". I found nothing about the underlying mechanism of expiration. As drugs are chemicals, why do they expire? Are there chemical reactions that produce other chemicals? | 20 | [
"expiration-dates"
] | {
"A": "Drug molecules, even when stored safely inside a tablet\\capsule, inside a closed container, upon a high shelf (hopefully), are still exposed to the environment, and are thus exposed to all of the chemical processes and reactions that go about all around us (to name just a few - oxidation, hydrolysis, isomeri... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://medicalsciences.stackexchange.com/questions/14355/why-do-drugs-expire |
finance_9313 | finance | Machine Learning vs Regression and/or Why still use the latter? | I come from a different field (Machine learning/AI/data science), but aim to ask a philosophical question with the utmost respect: Why do quantitative financial analysts (analysts/traders/etc.) prefer (or at least seem) traditional statistical methods (traditional = frequentist/regression/normal correlation methods/ts ... | 46 | [
"equities",
"regression",
"machine-learning"
] | {
"A": "In order to answer your question (for you) you would need something to compare to . You would need numbers to know if it is slower/faster, how much, and if it will impact your system overall. Also knowing your performance goals could narrow down the options. My advice is to take a look at your overall archite... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://quant.stackexchange.com/questions/9313/machine-learning-vs-regression-and-or-why-still-use-the-latter |
law_11912 | law | What are the rules on businesses that wish to only hire attractive females? | Many businesses feature beautiful female employees as part of their business plan and service offering. Examples include: Hooter's waitresses Sportclips stylists A small chain of drive-thru smoothies in my area that feature bikini clad hotties with whom you can purchase a photo Most all entertainment jobs I am consider... | 33 | [
"united-states",
"employment",
"workplace",
"bfoq"
] | {
"A": "There is a good answer at the Skeptics StackExchange here . Its three most relevant references are: 42 U.S.C. Chapter 21 , especially Subchapter VI (applies only to employers with fifteen or more employees every day in at least 20 calendar weeks in a year) An example case, Wilson v. Southwest Airlines Co. 517... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://law.stackexchange.com/questions/11912/what-are-the-rules-on-businesses-that-wish-to-only-hire-attractive-females |
law_51595 | law | How to store refusal of cookie consent | If a user refuses cookies on a website, then how can that website store that refusal? As far as I can tell, the GDPR requires you to store both consent to and refusal of personal data storage. But it seems to me that there is a catch 22 here: they specifically refused the storage of their data, and now the website is s... | 35 | [
"privacy",
"gdpr",
"european-union",
"data-protection"
] | {
"A": "Trump was an officer of the government, and Twitter wasn't. The First Amendment forbids the government and its agents from viewpoint discrimination, but private companies are not bound by it and can discriminate as much as they please. (There was a question as to whether such discrimination might affect wheth... | D | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://law.stackexchange.com/questions/51595/how-to-store-refusal-of-cookie-consent |
cybersecurity_45963 | cybersecurity | "Diffie-Hellman Key Exchange" in plain English | Can someone explain what the Diffie-Hellman Key Exchange algorithm in plain English? I have read that Twitter has implemented this technology which allows two parties to exchange encrypted messages on top of a non-secured channel. How does that work? | 303 | [
"cryptography",
"key-exchange",
"diffie-hellman",
"asymmetric"
] | {
"A": "Disclaimer: I am the author, creator, owner and maintainer of Have I Been Pwned and the linked Pwned Passwords service. Let me clarify all the points raised here: The original purpose of HIBP was to enable people to discover where their email address had been exposed in data breaches. That remains the primary... | D | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://security.stackexchange.com/questions/45963/diffie-hellman-key-exchange-in-plain-english |
medicine_925 | medicine | Do adult braces have a medical need beyond cosmetics? | While middle/upper-class American parents often have their children get braces as teenagers, an adult getting braces out of his/her own volition could be viewed as a sign of vanity, much like plastic surgery. While in most communities, braces are seen as more socially acceptable than plastic surgery, both involve modif... | 14 | [
"dentistry",
"cosmetics",
"dental-braces",
"teeth-alignment"
] | {
"A": "Drug molecules, even when stored safely inside a tablet\\capsule, inside a closed container, upon a high shelf (hopefully), are still exposed to the environment, and are thus exposed to all of the chemical processes and reactions that go about all around us (to name just a few - oxidation, hydrolysis, isomeri... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://medicalsciences.stackexchange.com/questions/925/do-adult-braces-have-a-medical-need-beyond-cosmetics |
medicine_23505 | medicine | Why will there be vaccines first before a cure for COVID-19? | I found this link on the internet: 70 vaccines are getting ready for coronavirus: 3 very promising Why is it that there will be vaccines before a cure? Shouldn't it be the other way around? What is the reason for the vaccine first then the cure? | 18 | [
"covid-19",
"vaccination",
"coronavirus"
] | {
"A": "Your question contains a lot of misconceptions. A cure is definitely possible A cure could be found, proved, and proved safe, more quickly than a vaccine People and firms that could be working on cures are choosing to work on vaccines None of these are correct. Most virus-caused diseases have no cure: colds, ... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://medicalsciences.stackexchange.com/questions/23505/why-will-there-be-vaccines-first-before-a-cure-for-covid-19 |
law_60524 | law | Could double jeopardy protect a murderer who bribed the judge and jury to be declared not guilty? | Assume the following hypothetical case: a well-known multi-billionaire is holding an event with lots of invitees, (so there is no doubt about his identity), then in front of many witnesses and live cameras takes out a gun and murders several people, while saying that he is of sane mind, and intended to do this because ... | 35 | [
"double-jeopardy"
] | {
"A": "The Plan For A Clearly Guilty Client Without Bargaining Power This question underestimates how much of a criminal defense lawyer's work involves sentencing rather than a determination of guilt or innocence. Suppose as the OP does that the prosecution can easily prove beyond a reasonable doubt that your client... | B | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://law.stackexchange.com/questions/60524/could-double-jeopardy-protect-a-murderer-who-bribed-the-judge-and-jury-to-be-dec |
law_92965 | law | Why and when would an attorney be handcuffed to their client? | While reading about the trial of Hans Reiser I came across this peculiar sentence: On Monday, July 7, 2008, Reiser led police to Nina's shallow grave in the Oakland Hills. Reiser's attorney, William Du Bois, who was handcuffed to Reiser and accompanied by a heavy police guard to the site, said that the remains were fou... | 40 | [
"united-states",
"criminal-procedure"
] | {
"A": "This is entirely possible in a number of different motions that could have been made. At this point, Vinny had destroyed the Prosecutor's eyewitnesses by showing they had issues that called their testimony into question (The first has a timeline that doesn't line up with events, the second has poor vision and... | D | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://law.stackexchange.com/questions/92965/why-and-when-would-an-attorney-be-handcuffed-to-their-client |
cybersecurity_120443 | cybersecurity | Internet courtship: Why would a hacker buy me poker chips? | Believe me, I never expected to ever write a title like that on a Stack Exchange site either! Yesterday evening I got a call from my mother. She is quite tech savvy and generally knows her way around spam and viruses. However, yesterday she was startled: she got an email from Facebook thanking her for her purchase of 4... | 136 | [
"passwords",
"facebook",
"identity-theft"
] | {
"A": "I interpret your question as: What's the motivation for someone to use an alien Facebook account to play poker and stock it with chips? It's not that strange if you think about it this way: As poker is a game where knowledge about the dealt cards gives you a significant edge in the game, you'd like to use soc... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://security.stackexchange.com/questions/120443/internet-courtship-why-would-a-hacker-buy-me-poker-chips |
cybersecurity_18197 | cybersecurity | Why shouldn't we roll our own? | Why shouldn't we create our own security schemes? I see a lot of questions around here about custom crypto and custom security mechanisms, especially around password hashing. With that in mind, I'm looking for a canonical answer, with the following properties: Easy for a newbie to understand. Clear and explicit in why ... | 297 | [
"cryptography",
"custom-scheme"
] | {
"A": "Yes, it is a security feature, and the purpose of the delay is to prevent attacks based around tricking the user into entering input to skip past the dialog by popping it up unexpectedly when the user is in the middle of inputting multiple key presses or mouse clicks in quick succession. The two examples that... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://security.stackexchange.com/questions/18197/why-shouldnt-we-roll-our-own |
engineering_33737 | engineering | Why do color TVs make black and white snow? | If you let a color TV display something from an unplugged display port, it displays snow, right? Randomly varying black or white pixels on the whole screen. My guess was that the television was decoding the noise from the unplugged wires as a video signal. Assuming this, it makes sense that B&W TVs make B&W snow (they ... | 93 | [
"electrical-engineering",
"signal-processing"
] | {
"A": "One of the problems that plagued older rechargeable batteries (e.g. Nickel Cadmium ($\\text{NiCad}$) and Nickel Metal Hydride ($\\text{NiMH}$)) was the memory effect . The memory effect occurs when a rechargeable battery is not fully discharged. It then \"forgets\" that it has a greater capacity than it think... | B | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://engineering.stackexchange.com/questions/33737/why-do-color-tvs-make-black-and-white-snow |
cybersecurity_201210 | cybersecurity | Why is Gbt3fC79ZmMEFUFJ a weak password? | On https://passwordsgenerator.net/ , it says Examples of weak passwords: qwert12345, Gbt3fC79ZmMEFUFJ, 1234567890, 987654321, nortonpassword The first, third, and fourth examples are obviously weak. I can't, however, see what's weak about the second one. Indeed, the only problem I see with it at the moment is that it d... | 301 | [
"passwords"
] | {
"A": "I was curious about the same thing, so I put Gbt3fC79ZmMEFUFJ into Google, and lo! and behold it found something that wasn't just a paraphrase of \"Don't use this password\" advice — the password itself was embedded in example source code that showed how you could send a password to a server! ( link to page ,... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://security.stackexchange.com/questions/201210/why-is-gbt3fc79zmmefufj-a-weak-password |
engineering_392 | engineering | How does a traffic light sense the proximity of vehicles? | Some traffic lights don't operate periodically but instead detect when a car is close by and then turns green. I have heard that they use a magnetic sensor embedded in the road to sense cars as they come near. Is this correct? Do they use other means as well? | 19 | [
"electrical-engineering",
"civil-engineering",
"traffic-light"
] | {
"A": "I can understand your concern. This is going to be difficult for two reasons: Finding out the agency that is responsible for the maintenance may be next to impossible for a layperson. Note that I said \"maintenance\", because this might be a different entity than the owner due to agreements. Due to the number... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://engineering.stackexchange.com/questions/392/how-does-a-traffic-light-sense-the-proximity-of-vehicles |
cybersecurity_184099 | cybersecurity | Secure way of masking out sensitive information in screenshots? | As a guy working in security/pentest, I regularly take screenshots of exposed passwords/sensitive information. Whenever I report these, I mask parts or complete info as in the sample given below I often wonder, is it possible for someone to 'reverse engineer' these pics and recover the original information? If so, what... | 142 | [
"forensics",
"image"
] | {
"A": "It typically works like this: Say your password is \"baseball\". I could simply store it raw, but anyone who gets my database gets the password. So instead I do an SHA1 hash on it, and get this: $ echo -n baseball | sha1sum a2c901c8c6dea98958c219f6f2d038c44dc5d362 Theoretically it's impossible to reverse a SH... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://security.stackexchange.com/questions/184099/secure-way-of-masking-out-sensitive-information-in-screenshots |
cybersecurity_52834 | cybersecurity | What exactly does it mean when Chrome reports 'no certificate transparency information was supplied by the server?' | When visiting Gmail in Chrome, if I click on the lock icon in the address bar and go to the connection tab, I receive a message 'no certificate transparency information was supplied by the server' (before Chrome 45, the message was displayed as 'the identity of this website has been verified by Google Internet Authorit... | 159 | [
"certificates",
"chrome"
] | {
"A": "Chrome not only stores your password text, it will show it to you. Under settings -> advanced -> manage passwords you can find all your passwords for all your sites. Click show on any of them and it will appear in the clear. Hashed passwords work for the site authenticating you. They are not an option for pas... | B | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://security.stackexchange.com/questions/52834/what-exactly-does-it-mean-when-chrome-reports-no-certificate-transparency-infor |
engineering_3986 | engineering | How do you ensure physical network interfaces always get the same interface name across reboots on an embedded Linux system? | For an embedded Linux system, if I have two or more network interfaces, how do I ensure that they always get the same interface names every boot In other words, I want, for example, eth0 to always map to one physical Ethernet port, eth1 to the next, etc. My Linux "distribution" is home-grown, and I use devtmpfs for pop... | 13 | [
"embedded-systems"
] | {
"A": "It is more efficient to transmit DC using about the same infrastructure. This is because of several effects: Skin effect experienced with AC. There is no skin effect with DC. Higher voltage allowed with DC for the same transmission lines. The lines have to withstand the peak voltage. With AC, that is 1.4 time... | B | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://engineering.stackexchange.com/questions/3986/how-do-you-ensure-physical-network-interfaces-always-get-the-same-interface-name |
medicine_32541 | medicine | Why are iron levels different in the left and right hands? | Yesterday I donated blood. When the nurse performed a finger prick test of iron using my left hand, she indicated that the level was too low. However, she then asked to perform the test again on my right hand. Surprisingly, the iron level was adequate. She said that this is a well known phenomenon, specifically that th... | 26 | [
"blood-tests",
"blood-circulation",
"hand",
"iron"
] | {
"A": "Great question! I think it's answerable as an overview, but please know this is only the tip of the iceberg.* Summary : Yes, we have deficits of certain blood products in certain locations at certain times that affect patient care. However, a small percentage of blood product does expire unused (because it wa... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://medicalsciences.stackexchange.com/questions/32541/why-are-iron-levels-different-in-the-left-and-right-hands |
finance_613 | finance | What is the best data structure/implementation for representing a time series? | I was wondering what is best practice for representing elements in a time series, especially with large amounts of data. The focus/context is in a back testing engine and comparing multiple series. It seems there are two options: 1) Using an integer index, or 2) Using a date-based index At the moment I am using dates, ... | 33 | [
"data",
"time-series",
"market-data"
] | {
"A": "Representing time series (esp. tick data) using elaborate data structures may be not the best idea. You may want to try to use two arrays of the same length to store your time series. The first array stores values (e.g. price) and the second array stores time. Note that the second series is monotonically incr... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://quant.stackexchange.com/questions/613/what-is-the-best-data-structure-implementation-for-representing-a-time-series |
cybersecurity_189632 | cybersecurity | Is it common to allow local desktop and/or active directory admin access and rights for developers in organizations? | I work at a company with a staff of about 1000+. We currently have programming development staff that work on web based projects (approx 50 people). Recently due to security concerns our IT and Security department implemented a restriction no longer allowing local admin access on machines . The entire company runs Wind... | 135 | [
"windows",
"audit",
"compliance",
"programming",
"windows-server"
] | {
"A": "Diffie-Hellman is a way of generating a shared secret between two people in such a way that the secret can't be seen by observing the communication. That's an important distinction: You're not sharing information during the key exchange, you're creating a key together. This is particularly useful because you ... | D | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://security.stackexchange.com/questions/189632/is-it-common-to-allow-local-desktop-and-or-active-directory-admin-access-and-rig |
law_743 | law | Do disclaimers need to be capitalized? | Are disclaimers of warranty, liability, and the like legally required to be in all-caps? For example, the "disclaimer of warranty" section from the GNU GPL : THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIE... | 35 | [
"united-states",
"licensing",
"disclaimers"
] | {
"A": "Do they have to use all caps? Well, no. It's just that companies feel that's the easiest way to make the text \"conspicuous\" which is required by the Uniform Commercial Code explicitly in § 2-316. Exclusion or Modification of Warranties. (2)Subject to subsection (3), to exclude or modify the implied warranty... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://law.stackexchange.com/questions/743/do-disclaimers-need-to-be-capitalized |
engineering_162 | engineering | How to correctly size the blades for a small educational wind turbine? | I want to design a small wind turbine that can be easily carried out of the classroom into the sports field in relatively low-wind conditions (5-15km/h) that can power a small ultra-bright 5V LED - just enough to show that it works. How do I calculate the power I can get from different blade diameters in these wind con... | 13 | [
"electrical-engineering",
"renewable-energy",
"power-engineering",
"wind-power"
] | {
"A": "As it happens, I just recently went through that calculation myself for a different site. Given the following facts from a quick web search, it isn't difficult to work out the numbers. The maximum efficiency of a (large) windmill is about 40%. The density of air is 1.225 kg/m 3 You need about 50 mW (10 mA at ... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://engineering.stackexchange.com/questions/162/how-to-correctly-size-the-blades-for-a-small-educational-wind-turbine |
medicine_31192 | medicine | Rapid Response COVID-19 Antigen Test: What can be assumed by the control bar? | Rapid COVID-19 antigen tests include a control line similar to this: From Case Western Reserve rapid testing instruction available here . What does the control bar/strip control for? All the chemicals required to test for COVID are present in acceptable concentrations. If there is COVID on the swab this test will show ... | 14 | [
"covid-19",
"test"
] | {
"A": "Your explanation numbered 1 is correct. The control line indicates that the antibodies required to detect the SARS-CoV-2 (the virus that causes COVID-19) particles have reached that location on the test strip. Each product is slightly different, but the Rapid Response package insert notes: Anti-SARS-CoV-2 ant... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://medicalsciences.stackexchange.com/questions/31192/rapid-response-covid-19-antigen-test-what-can-be-assumed-by-the-control-bar |
engineering_617 | engineering | Estimating whether the flow through a valve or nozzle cavitates | My understanding is that cavitation occurs in the flow of a liquid when the static pressure drops below the vapor pressure, even intermittently. So even if the time-averaged static pressure (what you might measure) is above the vapor pressure, the pressure fluctuations from turbulence or other unsteadiness could be lar... | 13 | [
"mechanical-engineering",
"fluid-dynamics",
"multiphase-flow"
] | {
"A": "If you consider only the static forces then indeed the thickness might seem over-engineered. However, engine blocks are not statically loaded. They operate in the range of a few hundred to a few thousand rpm (Revolution Per Minute), so there are dynamic considerations here. Fatigue When materials are subjecte... | D | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://engineering.stackexchange.com/questions/617/estimating-whether-the-flow-through-a-valve-or-nozzle-cavitates |
cybersecurity_6290 | cybersecurity | How is it possible that people observing an HTTPS connection being established wouldn't know how to decrypt it? | I've often heard it said that if you're logging in to a website - a bank, GMail, whatever - via HTTPS, that the information you transmit is safe from snooping by 3rd parties. I've always been a little confused as to how this could be possible. Sure, I understand fairly well (I think) the idea of encryption, and that wi... | 423 | [
"encryption",
"tls",
"cryptography",
"man-in-the-middle",
"key-exchange"
] | {
"A": "As a starting point, we will consider that each elementary operation implies a minimal expense of energy; Landauer's principle sets that limit at 0.0178 eV, which is 2.85×10 -21 J. On the other hand, the total mass of the Solar system, if converted in its entirety to energy, would yield about 1.8×10 47 J (act... | B | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://security.stackexchange.com/questions/6290/how-is-it-possible-that-people-observing-an-https-connection-being-established-w |
finance_2360 | finance | What exactly is meant by "microstructure noise"? | I see that term tossed around a lot, in articles relating to HFT, and ultra high frequency data. It says at higher frequencies, smaller intervals, microstructure noise is very dominant. What is this microstructure noise that they refer to? | 35 | [
"volatility",
"statistics",
"high-frequency",
"market-microstructure",
"high-frequency-estimators"
] | {
"A": "The volatiltiy surface is just a representation of European option prices as a function of strike and maturity in a different \"unit\" - namely implied volatility (while the term implied volatility has to be made precise by the model used to convert prices (quotes) into implied volatilities - for example: we ... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://quant.stackexchange.com/questions/2360/what-exactly-is-meant-by-microstructure-noise |
medicine_29276 | medicine | Why do doctors ask for your race? | Things like gender and age and height and weight make perfect sense to me, but I don't really see why most doctors ask for your race. Is there a medical reason behind this or is it just for identification purposes? | 28 | [
"epidemiology",
"research",
"genetic-predisposition",
"race",
"ethnicity"
] | {
"A": "In general, the benefit of flu shots is to the general population. Taking the cited value of 40%-60% from the CDC, we can say that it might be a coin toss for you personally to be protected from influenza by the shot. However, if many thousands of people take the flu shot, even if it only works on 40% of them... | D | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://medicalsciences.stackexchange.com/questions/29276/why-do-doctors-ask-for-your-race |
engineering_4209 | engineering | Why do cars turn by turning the front wheel? | Why do we design cars to turn by turning the front wheel? Wouldn't it better to keep all wheels straight and turn by rotating the wheels on one side of a car more then the wheels on the opposite side of the car, like tank tracks do? That way you can turn even if you are standing still. Why don't cars do this? | 21 | [
"automotive-engineering",
"wheels"
] | {
"A": "Note: This is specific to gasoline based engines. Assuming your car was produced after the ~1990's it is equipped with a Deceleration Fuel Cut-Off (DFCO) system which cuts the fuel flow to the engine when the gas pedal is not depressed and the car is in gear. In this case it is more fuel efficient to stay in ... | B | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://engineering.stackexchange.com/questions/4209/why-do-cars-turn-by-turning-the-front-wheel |
law_62103 | law | What crime is hiring someone to kill you and then killing the hitman? | Suppose that yesterday I was suicidal and decided to hire a hitman on the internet to kill me. Today, when they turn up, I have changed my mind and defend myself by killing the hitman. What crime(s) have I committed? This is completely hypothetical, so any jurisdiction would be interesting. | 37 | [
"murder",
"self-defense",
"suicide"
] | {
"A": "Yes, it's illegal You are missing something terribly important: The package might not be your property [yet]. In any way, it is not in your possession, while it is in the hands of the postal service! The contents of the package started fully owned by the sender and were entrusted to the postal service to deli... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://law.stackexchange.com/questions/62103/what-crime-is-hiring-someone-to-kill-you-and-then-killing-the-hitman |
engineering_45701 | engineering | How was this toy made? | This is a toy for infants. My son was playing with it, and I started wondering how you could manufacture this. I can't think of any reasonably cheap way it could be done. I believe it's made of plastic and not silicone. It's flexible, but not elastic. My first thought would be injection molding, but I can't see any way... | 13 | [
"injection-molding"
] | {
"A": "OP injection molding tag is correct. OBall uses injection molding and plastic welding. The OBall is the invention of David E. Silverglate. Toy Ball Apparatus with Reduced Part Count Reduced image from Kids II . It consists of four identical, flat, injection molded, pentagon and hexagon shapes with circular (o... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://engineering.stackexchange.com/questions/45701/how-was-this-toy-made |
finance_39619 | finance | Gamma Pnl vs Vega Pnl | Why does Gamma Pnl have exposure to realised volatility, but Vega Pnl only has exposure to implied volatility? I am confused as to why gamma pnl is affected (more) by IV and why vega pnl isnt affected (more) by RV? Essentially how do you show what gamma pnl will be mathematically and how do you show what vega pnl will ... | 23 | [
"options",
"implied-volatility",
"option-strategies",
"gamma",
"vega"
] | {
"A": "The risk-neutral measure $\\mathbb{Q}$ is a mathematical construct which stems from the law of one price , also known as the principle of no riskless arbitrage and which you may already have heard of in the following terms: \"there is no free lunch in financial markets\". This law is at the heart of securitie... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://quant.stackexchange.com/questions/39619/gamma-pnl-vs-vega-pnl |
engineering_8054 | engineering | What is this Y-shaped screwdriver bit, and what is its purpose? | I found this strange looking bit in a bit set of uncommon bits, including Security Torx, hexalobular, tri-wing, spanner head, 12-point flange, Torq-set and others. It's the only one that I could not identify, what is it for? | 13 | [
"mechanical-engineering",
"fasteners"
] | {
"A": "This is to make sure they know what the foundation is made of. For all they knew there may have been an old tunnel underneath that would have collapsed when the new building is put on top. London is built on top of an old marsh, this type of soil is very prone to sinking and uneven settling, digging down and ... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://engineering.stackexchange.com/questions/8054/what-is-this-y-shaped-screwdriver-bit-and-what-is-its-purpose |
law_16060 | law | Does being engaged (to be married) carry any legal significance? | Being married carries specific legal consequences, e.g. spouses typically are treated differently under tax law, divorce property law, inheritance law, have rights regarding medical visitation and medical decisions. Sometimes insurance carriers treat them differently, though i'm unsure if that's legally mandated or jus... | 37 | [
"united-states",
"france",
"marriage"
] | {
"A": "Your question is the subject of longstanding and ongoing debate that has generated countless articles and books and dissertations, so you're probably not going to get a fully satisfactory answer here. But here's the short version: Different systems operate on different assumptions. Your question suggests you ... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://law.stackexchange.com/questions/16060/does-being-engaged-to-be-married-carry-any-legal-significance |
finance_7402 | finance | how to derive yield curve from interest rate swap? | According to some textbooks, to derive the yield curve, quote overnight to 1 week: rates from interbank money market deposit, 1 month to 1 year: LIBOR; 1 year to 7 years: Interest Rate Swap; 7 years above: government bond. I'm a bit lost here: how can an IRS rate be used to derive yield curve? Yield rate is the discoun... | 30 | [
"interest-rates",
"swaps",
"yield-curve",
"interest-rate-swap",
"irs"
] | {
"A": "The standard story (also told by @vonjd) is of \"The Drunk and Her Dog\". This is based on \"A Drunk and Her Dog: An Illustration of Cointegration and Error Correction\" (1994). The story is itself based on the standard illustration for a random walk known as the \"drunkard's walk\". The Dickey-Fuller test is... | D | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://quant.stackexchange.com/questions/7402/how-to-derive-yield-curve-from-interest-rate-swap |
cybersecurity_122336 | cybersecurity | I got an email threatening to DDOS me if I don't pay a ransom. What should I do? | I received the following email, addressed to me at an email address on my personal domain (for which I run my own mail server on a VPS): FORWARD THIS MAIL TO WHOEVER IS IMPORTANT IN YOUR COMPANY AND CAN MAKE DECISION! We are Armada Collective. lmgtfy URL here Your network will be DDoS-ed starting 12:00 UTC on 08 May 20... | 139 | [
"ddos",
"threat-mitigation"
] | {
"A": "It typically works like this: Say your password is \"baseball\". I could simply store it raw, but anyone who gets my database gets the password. So instead I do an SHA1 hash on it, and get this: $ echo -n baseball | sha1sum a2c901c8c6dea98958c219f6f2d038c44dc5d362 Theoretically it's impossible to reverse a SH... | D | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://security.stackexchange.com/questions/122336/i-got-an-email-threatening-to-ddos-me-if-i-dont-pay-a-ransom-what-should-i-do |
law_104642 | law | Sticker on caption phone says that using the captions can be illegal. Why? | I was testing donated electronics at a local non-profit, to decide what to put on the shelves and what to recycle, when I found this: Federal law prohibits anyone but registered users with hearing loss from using this device with Captions On. I can understand the loudness warning on the ear end of the handset, but I'm ... | 35 | [
"united-states",
"disabilities",
"phonecall",
"communications-law"
] | {
"A": "This is the Fed (FCC) saying \"I'm paying for this, so I get to determine who uses it.\" The service costs money. It is not automagic speech to text, but rather there is often (usually?) an actual human typing it in. Carriers front the cost, and then get compensation from the Fed. The Federal govt picks up th... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://law.stackexchange.com/questions/104642/sticker-on-caption-phone-says-that-using-the-captions-can-be-illegal-why |
cybersecurity_8145 | cybersecurity | Does https prevent man in the middle attacks by proxy server? | There is a desktop client A connecting to website W in a https connection A --> W Somehow between A and W, there is a proxy G. A --> G --> W In this case, will G be able to get the certificate which A previously got from W? If G can get the certificate, does that mean that G will be able to decrypt the data? | 222 | [
"tls",
"certificates",
"sniffer"
] | {
"A": "The reason password expiration policies exist, is to mitigate the problems that would occur if an attacker acquired the password hashes of your system and were to break them. These policies also help minimize some of the risk associated with losing older backups to an attacker. For example, if an attacker wer... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://security.stackexchange.com/questions/8145/does-https-prevent-man-in-the-middle-attacks-by-proxy-server |
engineering_443 | engineering | How fast does solid waste fall in vertical drain pipes? | Some building are really tall, if you flush the toilet and the contents go into a pipe and straight down, there could be a lot of energy, potentially enough to cause harm to the sewer pipe at the end of the fall. I know that in my home, the pipe goes straight down and then there is just a 90 degree bend. According to W... | 35 | [
"structural-engineering",
"piping"
] | {
"A": "Biggest advantage is that when connecting to trailers, there are no bleeding issues. Imagine having to connect hydraulic pipes and remove the air bubbles... As for the amount of air - the compressor and receiving tanks are designed for normal use. However if you wish to accompany AC/DC with the air brakes you... | D | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://engineering.stackexchange.com/questions/443/how-fast-does-solid-waste-fall-in-vertical-drain-pipes |
engineering_2295 | engineering | How many train passes can railway tracks endure? | I know that the rubber on car and truck tires wear, and the road concrete wears out. I wondered: While steel is hard and elastic, it still causes friction (interaction between molecules) and therefore abrasion. Let's say we have on average 20-30 wagons with four axles with a full load of 50-60 tons on each wagon and a ... | 19 | [
"civil-engineering",
"materials",
"rail",
"transportation"
] | {
"A": "This is an admittedly North American response. MGT In the US, how much traffic goes over a given track in a year is measured in Million Gross Tons (MGT) e.g. 1 MGT = 2 000 000 000 lbs [spaces instead of commas to be world-friendly]. This is a measure of the total weight of cargo and vehicles but not necessari... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://engineering.stackexchange.com/questions/2295/how-many-train-passes-can-railway-tracks-endure |
cybersecurity_20803 | cybersecurity | How does SSL/TLS work? | How does SSL work? I just realised we don't actually have a definitive answer here, and it's something worth covering. I'd like to see details in terms of: A high level description of the protocol. How the key exchange works. How authenticity, integrity and confidentiality are enforced. What the purpose of having CAs i... | 1,300 | [
"tls",
"certificates",
"public-key-infrastructure"
] | {
"A": "Note: This answer was written in 2013. Many things have changed in the following years, which means that this answer should primarily be seen as how best practices used to be in 2013. The Theory We need to hash passwords as a second line of defence. A server which can authenticate users necessarily contains, ... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://security.stackexchange.com/questions/20803/how-does-ssl-tls-work |
finance_34111 | finance | What are reasons not to do factor investing in equity markets? | Factor investing in equity markets is one of the hot topics of these days. Many manufacturers of investment products offer exposure to small cap, momentum, minvol, value and other pure factors or factor blends. Many of them beating the cap-weighted index at relatively low cost. I think of various reasons but I woud lik... | 23 | [
"equities",
"portfolio-management",
"factor-investing"
] | {
"A": "This question goes to whether the historical returns to factors represent: Spurious results, overfitting, data mining... Mispricing Unexploitable effects Compensation for risk Case 1: Spurious results etc... If someone constructs a \"stock tickers that begin with AAP or GOO\" factor, the highly above average ... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://quant.stackexchange.com/questions/34111/what-are-reasons-not-to-do-factor-investing-in-equity-markets |
finance_7568 | finance | Mapping symbols between tickers, Reuters RICs and Bloomberg tickers | Is there any known solution (preferably open source) to map between ticker symbols, Reuters and Bloomberg symbols. For example: Ticker: AAPL Reuters: AAPL.O (may be prefixed with RSF.ANY. dependent upon infrastructure) Bloomberg: AAPL US Equity Edit: by mapping I mean translating from one symbol naming convention to an... | 39 | [
"market-data",
"tick-data",
"bloomberg",
"reuters"
] | {
"A": "Here are some pointers. First of all: What you list as a Reuters RIC, RSF.ANY.AAPL.OQ , is not really a RIC, only the AAPL.OQ is. The initial part is some stuff which is essentially site specific and tells me that you are working on a site that has a legacy RTIC infrastructure (some Reuters/TIBCO technology w... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://quant.stackexchange.com/questions/7568/mapping-symbols-between-tickers-reuters-rics-and-bloomberg-tickers |
law_48441 | law | How would the actions of Hänsel and Gretel in the Grimm tale be interpreted in modern law? | This came up as a layman’s law question. I thought of this when reading the classic Grimm tale Hänsel and Gretel to my children. The situation is as follows: The witch imprisons Hänsel with the stated intention to eat (and thus kill) him. Gretel is asked to light the fire in the oven with the stated intention by the wi... | 88 | [
"criminal-law",
"law-in-fiction"
] | {
"A": "Doing nothing is legally safer than doing something, but you're not without hope if you pull the lever. Although you'll likely have committed murder or at least manslaughter, case law is littered with lenience in exigent circumstances, even where convictions have been affirmed. Because this is a philosophical... | B | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://law.stackexchange.com/questions/48441/how-would-the-actions-of-h%c3%a4nsel-and-gretel-in-the-grimm-tale-be-interpreted-in-m |
cybersecurity_219872 | cybersecurity | Is exploit-free software possible? | I have heard that there will always be vulnerabilities in codes, software. However, I don't understand why it is not possible to have an exploit-free software. If companies keep updating their software, eventually there will be no vulnerabilities, right? | 141 | [
"vulnerability",
"theory"
] | {
"A": "It typically works like this: Say your password is \"baseball\". I could simply store it raw, but anyone who gets my database gets the password. So instead I do an SHA1 hash on it, and get this: $ echo -n baseball | sha1sum a2c901c8c6dea98958c219f6f2d038c44dc5d362 Theoretically it's impossible to reverse a SH... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://security.stackexchange.com/questions/219872/is-exploit-free-software-possible |
cybersecurity_29988 | cybersecurity | What is certificate pinning? | I'm superficially familiar with SSL and what certs do. Recently I saw some discussion on cert pinning but there wasn't a definition. A DDG search didn't turn up anything useful. What is certificate pinning? | 373 | [
"tls",
"certificates",
"public-key-infrastructure",
"certificate-pinning"
] | {
"A": "This is an active area of research. I happen to have done some work in this area, so I'll share what I can about the basic idea (this work was with industry partners and I can't share the secret details :) ). The tl;dr is that it's often possible to identify an encrypted traffic stream as carrying video, and ... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://security.stackexchange.com/questions/29988/what-is-certificate-pinning |
engineering_2859 | engineering | While going downhill, does my car consume less fuel when in neutral or in gear? | I once meditated on the fact that a car, in downhill, would consume more fuel when in neutral to keep the engine on, rather than in gear. To keep the engine on when in gear, in fact, you mostly need the gravity and enough thrust to keep it rotating, and therefore no fuel (just motor oil). This is what I'd expect cars t... | 16 | [
"automotive-engineering",
"fuel-economy"
] | {
"A": "It is more efficient to transmit DC using about the same infrastructure. This is because of several effects: Skin effect experienced with AC. There is no skin effect with DC. Higher voltage allowed with DC for the same transmission lines. The lines have to withstand the peak voltage. With AC, that is 1.4 time... | B | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://engineering.stackexchange.com/questions/2859/while-going-downhill-does-my-car-consume-less-fuel-when-in-neutral-or-in-gear |
cybersecurity_17421 | cybersecurity | How to store salt? | If you expect to store user password securely, you need to do at least the following: $pwd=hash(hash($password) + salt) Then, you store $pwd in your system instead of the real password. I have seen some cases where $pwd contains the salt itself. I wonder whether the salt should be stored separately, or is it OK if an a... | 632 | [
"passwords",
"hash",
"salt"
] | {
"A": "There is no substantial security benefit to disallowing pasted passwords; on the contrary it is likely to weaken security by discouraging the use of password managers to generate and autofill randomized passwords. While some password managers are capable of overriding pasting restrictions, the point still sta... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://security.stackexchange.com/questions/17421/how-to-store-salt |
medicine_806 | medicine | How do antihistamines work? | We recently got some new kittens and my step son is allergic to them. He mostly suffers from a runny nose, but also had itchy eye last night after he Left a robe in the kitten room all day Put it on after getting home from school Kept scratching his eye after playing with the kittens etc. Anyway, so he's trying an anti... | 16 | [
"allergy"
] | {
"A": "Assuming the person is not taking anticoagulants, it's actually quite difficult to bleed to death from dismemberment of small members (hands, feet, penis, ears, nose, etc). Even large members such as arms and legs are often survivable because the body is very good at protecting itself from blood loss. For exa... | B | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://medicalsciences.stackexchange.com/questions/806/how-do-antihistamines-work |
finance_1710 | finance | Proof that you cannot beat a random walk | There is much speculation to what degree financial series are random (and what kind of randomness prevails). I want to turn the question on its head and ask: Is there a mathematical proof that whatever trading strategy you use you cannot beat a random walk (that is the expected value will always be 0 assuming no drift)... | 28 | [
"quant-trading-strategies",
"random-walk"
] | {
"A": "Because of: The (extreme) dominance of noise over signal The prevalence of non-repeating patterns (many of which we know are not going to repeat) A pathetic sample size for cross-validation Regime changes due to exogenous events. These are typically in the cross-val window which makes it even worse. (GFC, fin... | B | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://quant.stackexchange.com/questions/1710/proof-that-you-cannot-beat-a-random-walk |
cybersecurity_192244 | cybersecurity | If my password was able to be printed on a form sent home from my child's school, does it imply insecure password storage policies? | I have a user account for each of my children in our district website, which oversees registration, grades, identification, etc. I was recently sent home a form from both of my children's classrooms asking us to login to our accounts so we could sign a new school year form. Printed on this piece of paper was both the u... | 155 | [
"passwords",
"web-application"
] | {
"A": "There are a few issues with HTTP Basic Auth: The password is sent over the wire in base64 encoding (which can be easily converted to plaintext). The password is sent repeatedly, for each request. (Larger attack window) The password is cached by the webbrowser, at a minimum for the length of the window / proce... | D | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://security.stackexchange.com/questions/192244/if-my-password-was-able-to-be-printed-on-a-form-sent-home-from-my-childs-school |
engineering_211 | engineering | What causes rechargeable batteries to age? What can be done to extend life of these batteries? | These days most of modern electronics use rechargeable batteries as a power source. Also, these days most modern rechargeable batteries are Lithium Ion or Lithium Polymer based. Like any other devices, over time these rechargeable batteries lose the ability to recharge, retain and discharge energy thus users have to re... | 12 | [
"energy",
"electrical-engineering",
"energy-storage",
"chemical-engineering",
"battery"
] | {
"A": "The picture, below, of the exaggerated long section of the Channel Tunnel was taken from Wikipedia . Full-sized image here . Some of the limiting factors for the Channel Tunnel are: Railways don't like steep gradients The tunnels comprising the Channel Tunnel were excavated using tunnel boring machines (TBMs)... | D | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://engineering.stackexchange.com/questions/211/what-causes-rechargeable-batteries-to-age-what-can-be-done-to-extend-life-of-th |
law_76594 | law | If you are a lawyer of a thief, drug dealer, or human trafficker, what would you tell your client to tell IRS? | I read this in 9gag. So what should we do if we are in this situation? If thieves and criminals can just say I have this income and don't tell the source, can legitimate businessmen do the same? | 39 | [
"tax-law"
] | {
"A": "Public nudity is illegal in New York as it is in almost every U.S. jurisdiction. And, if the police had arrested the nude protesters, the arrests probably would have been upheld in court, because a ban on nudity in public would probably be viewed as a time, place and manner restriction on the freedom of speec... | B | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://law.stackexchange.com/questions/76594/if-you-are-a-lawyer-of-a-thief-drug-dealer-or-human-trafficker-what-would-you |
engineering_1958 | engineering | What makes the material travel through Archimedes' Screw? | ...or in other words, why doesn't the material just stick to the screw, rotating in place, without progressing along its length? In the simplest case, the answer is obvious: gravity. If it's a granular or liquid material and the screw is tilted to a side, it will just roll/slide/flow along the blade, to remain on the b... | 13 | [
"fluid-mechanics"
] | {
"A": "The turbulence model can make a big difference in your simulation . There are many turbulence models around. It becomes a tough job to select one out of them. There is no perfect turbulence model. It all depends on several parameters like Reynold's number, whether the flow is separated, pressure gradients, bo... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://engineering.stackexchange.com/questions/1958/what-makes-the-material-travel-through-archimedes-screw |
cybersecurity_65244 | cybersecurity | What are the security reasons for disallowing the plus sign in email addresses? | My question is based on this tweet after I commented about forbidding + symbols in email addresses. The tweet says, "This is a measure we've taken for security reasons." This can be frustrating and inconvenient for people that have (or use) plus signs in their email address, and I'm sure web sites don't intend to do th... | 137 | [
"email"
] | {
"A": "/** Dave's Home-brew Hash */ // user data $user = ''; $password = ''; // timestamp, \"random\" # $time = date('mdYHis'); // known to attackers - totally pointless // ^ also, as jdm pointed out in the comments, this changes daily. looks broken! // different hashes for different days? huh? or is this stored as ... | B | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://security.stackexchange.com/questions/65244/what-are-the-security-reasons-for-disallowing-the-plus-sign-in-email-addresses |
engineering_32639 | engineering | What is the purpose of these “partially filled in” locomotive wheels? | I recently visited a railway museum with a lot of Soviet-era locomotives. The picture below shows the wheels on a locomotive from the 1930s or 1940s. Some of the wheels are thicker on one side (as it it were a partially filled cup). What is the purpose of that? (Now that I am looking at the picture again I wonder if th... | 39 | [
"rail",
"wheels"
] | {
"A": "Those are counterweights . They work exactly the same as those lead counterbalance weights on the wheels of your automobile. If they left those out, then those connecting rods and bearings would create an out-of-balance condition, and the wheels would vibrate at higher speeds. That could very well damage the ... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://engineering.stackexchange.com/questions/32639/what-is-the-purpose-of-these-partially-filled-in-locomotive-wheels |
engineering_1926 | engineering | Why is kVA not the same as kW? | I thought my electric car charging unit uses 6.6 kW of power. However, I found the label and it actually says 6.6 kVA. When I saw this I thought something along the lines of... Well, $ P=VI $, therefore kVA must be the same thing as kW... strange, I wonder why it's not labelled in kW. So a quick Google search later, an... | 59 | [
"electrical-engineering"
] | {
"A": "The problem is that the formula $P=I\\ V$ is correct when dealing with DC circuits or with AC circuits where there is no lag between the current and the voltage. When dealing with realistic AC circuits, the power is given by $$ P=I\\ V\\ \\cos(\\phi), $$ where $\\phi$ is the phase difference between the curre... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://engineering.stackexchange.com/questions/1926/why-is-kva-not-the-same-as-kw |
cybersecurity_111260 | cybersecurity | Is the BBC’s advice on choosing a password sensible? | In this article on the BBC’s website they offer advice on how to develop a password. The steps are as follows. Step 1: Choose an artist (a recording artist I presume) Lets choose as an example case study the teen idol and all round bad boy Justin Bieber.* Step 2: Choose a song. (The catcher the better) Next, I need to ... | 153 | [
"passwords",
"password-policy",
"password-cracking"
] | {
"A": "Yep, that's a big problem, especially if that was your old password (i.e. not a newly assigned one). Technically, the password might be stored under reversible encryption rather than plain text, but that's nearly as bad. The absolute minimum standard should be a salted hash - anything less and anybody with ac... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://security.stackexchange.com/questions/111260/is-the-bbc-s-advice-on-choosing-a-password-sensible |
finance_344 | finance | What is the implied volatility skew? | I often hear people talking about the skew of the volatility surface, model, etc... but it appears to me that there isn't a clear standard definition unanimously used by practitioners. So here is my question: Does anyone have a clear and unifying definition that can be stated in mathematical terms of what skew is in th... | 25 | [
"options",
"option-pricing",
"implied-volatility",
"volatility-skew"
] | {
"A": "Intro: Great answer given by Kevin. I would like to contribute an additional perspective. My experience with and my understanding of the Risk Neutral measure is entirely based on \"no arbitrage\" and \"replication / hedging\" arguments. The way I would like to explain this view is via the following three-step... | D | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://quant.stackexchange.com/questions/344/what-is-the-implied-volatility-skew |
medicine_442 | medicine | What forms of prevention of STIs are there? | Other than the condom, are there any other methods of preventing contracting STIs? If so, do any of these also provide an effective form of contraception? | 14 | [
"sti",
"contraception",
"sex"
] | {
"A": "Most dentists - for most procedures - aim for a painless experience. If there is reason to keep some pain sensation intact, the dentist will inform you, and ask at appropriate intervals if you can feel pain. The efficacy of lidocaine and other local anesthetics depends on how closely your nerve distribution c... | B | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://medicalsciences.stackexchange.com/questions/442/what-forms-of-prevention-of-stis-are-there |
law_49002 | law | Can I ask a cop, "What happened?" | Around 10pm, I see red and blue lights through my window. I look outside, and I see 7 cop cars (and a bike) in front of my house. There are 8 cops standing around in a circle, laughing -- I'm concerned because I bought this (my first) home only months ago. I go out and from a distance have the following dialogue: me: "... | 49 | [
"united-states",
"police",
"florida"
] | {
"A": "You are allowed to ask the police whatever questions you like. There is an upper limit that you can't refuse to obey a lawful order on the premise that you want to ask a bunch of questions, but they don't seem to have ordered you to do anything, so you can ask away. They have no obligation to tell you anythin... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://law.stackexchange.com/questions/49002/can-i-ask-a-cop-what-happened |
medicine_2 | medicine | What are these lines in teeth? | The following tooth cracks are noticeable when a torch is shining on them (without the torch, they aren't visible). Are they serious? How viable are the teeth, and might they need to be replaced with false teeth in the near future? There is no pain experienced, but they seem to look quite bad: | 43 | [
"dentistry"
] | {
"A": "Drug molecules, even when stored safely inside a tablet\\capsule, inside a closed container, upon a high shelf (hopefully), are still exposed to the environment, and are thus exposed to all of the chemical processes and reactions that go about all around us (to name just a few - oxidation, hydrolysis, isomeri... | B | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://medicalsciences.stackexchange.com/questions/2/what-are-these-lines-in-teeth |
law_247 | law | What are the legal repercussions of taking a stranger's picture in public? | With Snapchat and Instagram it is all too easy to abuse picture taking and really inexpensive to snap a photo of an unknowing stranger. If you are in public and will only post pictures online without their permission, can the victim take legal action against you? What would be the effect on the photo taker? Will there ... | 47 | [
"united-states",
"privacy",
"right-of-publicity",
"photography"
] | {
"A": "In order to accommodate various objections that have arisen in recent generations, in general: You are allowed to \"affirm\" instead of \"swear\" You do not have to say \"so help me God\" You do not have to place your hand on a Bible or any object These variances are often allowed by statute. A witnessed \"so... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://law.stackexchange.com/questions/247/what-are-the-legal-repercussions-of-taking-a-strangers-picture-in-public |
engineering_1977 | engineering | Why dig out and then fill in before building a large structure? | I work in the middle of London, in an area full of large office blocks. Across the road from my office they have started construction of a large building (10 stories plus). Over the last few weeks, diggers have dug a large (and vertical walled) hole. Lorries have taken the resulting dirt and old concrete away, leaving ... | 32 | [
"structural-engineering",
"geotechnical-engineering",
"building-design",
"foundations"
] | {
"A": "As other have pointed out, the main utility is to allow easier cleaning of the tank cars from sediment (solid precipitates). Usually, there is a drain in the lowest point. The reason that it is in the middle is that in this way, you can allow double the incline compared to if you had the drain at one of the e... | B | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://engineering.stackexchange.com/questions/1977/why-dig-out-and-then-fill-in-before-building-a-large-structure |
cybersecurity_70733 | cybersecurity | How do I use "openssl s_client" to test for (absence of) SSLv3 support? | In order to mitigate the "Poodle" vulnerability , I'd like to disable SSLv3 support in my (in this case, TLS, rather than HTTPS) server. How can I use openssl s_client to verify that I've done this? | 130 | [
"tls",
"openssl"
] | {
"A": "OpenSSL s_client To check if you have disabled the SSLv3 support, then run the following openssl s_client -connect example.com:443 -ssl3 which should produce something like 3073927320:error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure:s3_pkt.c:1258:SSL alert number 40 3073927320:error:1... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://security.stackexchange.com/questions/70733/how-do-i-use-openssl-s-client-to-test-for-absence-of-sslv3-support |
engineering_1998 | engineering | How does pressure treatment affect the mechanical properties of lumber? | Pressure treated lumber is specified for many exterior applications because of its resistance to insect damage and fungal rot. But how does it compare to untreated wood, mechanically? For example, consider a rim joist supporting the ground floor of a residential structure with a pier and post foundation. If the joist h... | 13 | [
"structural-engineering",
"wood"
] | {
"A": "After the 2014 ICCT report revealed that these light-duty passenger diesel vehicles were emitting too much NOx and US regulators confronted VW about the results, VW did some testing and proposed a voluntary software recall to recalibrate the various emissions control devices on the affected vehicles. From the... | D | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://engineering.stackexchange.com/questions/1998/how-does-pressure-treatment-affect-the-mechanical-properties-of-lumber |
medicine_1098 | medicine | Does keeping different types of medications in one pill bottle affect their quality? | I take a number of different medications and herbal supplements. Because keeping separate containers in my pocketbook is cumbersome, I've been combining them together in the same prescription bottle. I'm wondering if this alters or diminishes their effectiveness. The combination includes: regular tablets, some of which... | 14 | [
"medications"
] | {
"A": "No, this does not alter them, or make them less effective. There are problems with a scant amount of medicine crumbling, as you've noticed. The only real concern I'd have for anyone doing this is regarding the authorities: for example, while traveling out of the country, it's good to keep your medicines in th... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://medicalsciences.stackexchange.com/questions/1098/does-keeping-different-types-of-medications-in-one-pill-bottle-affect-their-qual |
law_93045 | law | What 'specific legal meaning' does the word "strike" have? | Over on main meta, on the post containing a statement from Stack Overflow about the current moderator action , there was a brief edit war over the inclusion (or not) of the word "strike" in the title. An SO staff member said : While we recognize that the community is referring to this event as a "strike", that term has... | 44 | [
"united-states",
"labor-law"
] | {
"A": "Short Answer Applicants are required by military regulation to have a percentile score on a standardized test called the ASVAB that is 31 or more, which is roughly comparable to an IQ score on the Stanford-Binet scale of a little bit less than 92, for high school graduates seeking to enter the Army or Navy (o... | D | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://law.stackexchange.com/questions/93045/what-specific-legal-meaning-does-the-word-strike-have |
law_37408 | law | Can I legally make a website about boycotting a certain company? | Located in the US. Can I make a website which is specifically aimed at boycotting a certain company? There is no lawsuit between myself and the company. There would be no defamation on the website and no editorials or subjective content. There might be links to editorials hosted on other websites. This website content ... | 59 | [
"united-states",
"website"
] | {
"A": "The article says: Defense lawyers say the evidence does not show a celebration of violence. Which implies that the prosecution claimed exactly that, or at least that the defense anticipates the prosecution to claim something along those lines. The article also says [ bold italic emphasis mine]: Defense lawyer... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://law.stackexchange.com/questions/37408/can-i-legally-make-a-website-about-boycotting-a-certain-company |
law_16790 | law | On what basis might Trump's executive order on immigration be illegal? | On 27 January 2017, US President Donald Trump has issued an executive order entitled ' Protecting the Nation from Foreign Terrorist Entry into the United States '. On 30 January 2017, the acting Attorney General at the time refused to defend it in court because it was unconstitutional or otherwise illegal: [ news artic... | 90 | [
"united-states",
"constitutional-law",
"us-constitution",
"immigration"
] | {
"A": "No Parliament is sovereign : Parliamentary sovereignty is a principle of the UK constitution. It makes Parliament the supreme legal authority in the UK, which can create or end any law. Generally, the courts cannot overrule its legislation and no Parliament can pass laws that future Parliaments cannot change ... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://law.stackexchange.com/questions/16790/on-what-basis-might-trumps-executive-order-on-immigration-be-illegal |
law_65396 | law | Stop, in the name of the law | Does the popular media cliche Stop, in the name of the law have any founding in actual law or policing practice, either current or historical? Did police ever say this as a matter of course? If so why? If not where did this expression enter the popular consciousness? | 37 | [
"police",
"media"
] | {
"A": "A few possible reasons it could be illegal (on an issue spotting basis, not a careful analysis of each possible reason): The EO is intended to discriminate on the basis of religion and in fact does so in violation of the 1st Amendment to the United States Constitution. The EO is intended to unlawfully discrim... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://law.stackexchange.com/questions/65396/stop-in-the-name-of-the-law |
finance_1004 | finance | How are cryptography and speech recognition technology applied to forecasting financial markets? | One of the answers to my previous question regarding the strategy of Renaissance Technologies , there was a reference to The Quants: How a New Breed of Math Whizzes Conquered Wall Street and Nearly Destroyed It . After doing some browsing in the book I found that it states that Renaissance Technologies obviously very s... | 29 | [
"quant-trading-strategies",
"research",
"forecasting",
"machine-learning"
] | {
"A": "By \"cryptography\" you mean information theory. Information theory is useful for portfolio optimization and for optimally allocating capital between trading strategies (a problem which is not well addressed by other theoretical frameworks.) See: --- J. L. Kelly, Jr., \"A New Interpretation of Information Rat... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://quant.stackexchange.com/questions/1004/how-are-cryptography-and-speech-recognition-technology-applied-to-forecasting-fi |
cybersecurity_166724 | cybersecurity | Should I use CSRF protection on Rest API endpoints? | Quick note: this is not a duplicate of CSRF protection with custom headers (and without validating token) despite some overlap. That post discusses how to perform CSRF protection on Rest endpoints without discussing if it is actually necessary. Indeed, many CSRF/Rest questions I've read on this site talk about securing... | 287 | [
"web-application",
"csrf",
"rest"
] | {
"A": "One thought is to not allow form submission if there is not a value in the password box. Generally if they accidentally entered the password in the username, then there likely isn't going to be anything in the password dialog. It is worth noting that this does not have to be simply done client side, but could... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://security.stackexchange.com/questions/166724/should-i-use-csrf-protection-on-rest-api-endpoints |
engineering_2071 | engineering | Is interference between aircraft an issue for fly-by-wireless technology? | I was reading up on fly-by-wire development, and I saw a short section about fly-by-wireless technology. It seems like a great idea, with the potential to lower costs, weight and complexity. I can see a possible scenario where it could be an issue, though: Two aircraft are very close together (e.g. on a runway or flyin... | 12 | [
"electrical-engineering",
"aerospace-engineering",
"emc",
"telecommunication",
"product-testing"
] | {
"A": "Cross-interference between aircraft is a high unlikely event because all commercial aircraft designs have to pass DO-160 environmental testing requirements. Among the DO-160 testing specification is EMI/EMC Testing. These tests include Radiated Emission, Interference and Immunity Testing. Part of these tests ... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://engineering.stackexchange.com/questions/2071/is-interference-between-aircraft-an-issue-for-fly-by-wireless-technology |
law_37491 | law | Is it truly illegal for the US Armed Forces to hire someone whose IQ is less than 83? | In this video , Jordan Peterson says that [...] anybody into the Armed Forces if they have an IQ of less than 83 Is this true? What law is this supposed restriction based on? | 67 | [
"united-states",
"is-x-legal",
"military"
] | {
"A": "Short Answer Applicants are required by military regulation to have a percentile score on a standardized test called the ASVAB that is 31 or more, which is roughly comparable to an IQ score on the Stanford-Binet scale of a little bit less than 92, for high school graduates seeking to enter the Army or Navy (o... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://law.stackexchange.com/questions/37491/is-it-truly-illegal-for-the-us-armed-forces-to-hire-someone-whose-iq-is-less-tha |
law_27486 | law | I want to leave Islam, but they would execute and kill me. What do I do? | I live in an Islamic country, but I don't want to be a Muslim. I have no choice but to claim to be a Muslim: If I leave Islam, they will execute me according to Muslim law. Where can I go to have a peaceful, non-religious life? Can I get asylum in any English-speaking countries? For example, would the Republic of Irela... | 112 | [
"religion",
"ireland",
"refugee-law"
] | {
"A": "Yes you can, and you can even include \"editorials or subjective content\". However, if you include factual statements, or words that imply factual statements, the company could claim that they are false, and therefore defamatory. Indeed they might claim that in any case. If you make no false statements of fa... | D | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://law.stackexchange.com/questions/27486/i-want-to-leave-islam-but-they-would-execute-and-kill-me-what-do-i-do |
finance_14567 | finance | What is the Swap Curve? | What is the so-called Swap Curve, and how does it relate to the Zero Curve (or spot yield curve)? Does it only refer to a curve of swap rates versus maturities found in the market? Or is it a swap equivalent of a spot-yield curve constructed from bootstrapping a bond yield curve? The context of this question is set aga... | 34 | [
"yield-curve",
"swaps",
"interest-rate-swap"
] | {
"A": "It's an interesting question. I particularly agree with the $\\mathbb{Q}-\\mathbb{P}$ dichotomy mentioned by many. I would add to the other answers that, come to think of it, the Black-Scholes postulated Geometric Brownian Motion could be interpreted as an AR(1) process on the logarithm of the stock price as ... | C | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://quant.stackexchange.com/questions/14567/what-is-the-swap-curve |
finance_54362 | finance | Did Citigroup really fail three times in the last 40 years? | I watched a speech by Simon Johnson at UCSB and, at one point, he claimed that Citigroup has failed three times since the 1980s. For example, he claims that Citigroup failed and was saved by the government in 1982 because of "bad loans made in emerging markets". The second such failure is at the end of the 1980s becaus... | 24 | [
"banks"
] | {
"A": "(I worked there for 23 years.) Simon Johnson is correct. Citi (or its predecessors) was insolvent on those 3 occasions, and would have gone into liquidation without the bailouts by U.S. taxpayers.",
"B": "I have worked on this topic extensively (pricing and calculating IV in production) and believe can offe... | A | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://quant.stackexchange.com/questions/54362/did-citigroup-really-fail-three-times-in-the-last-40-years |
cybersecurity_228918 | cybersecurity | Why is "fhepfcelehfcepfffacacacacacacabn" a top DNS query from my devices? | I recently set up NextDNS on my personal devices to further reduce the amount of tracking and ads I'm exposed to. The service comes with built-in analytics that shows a brief overview of your network activity. Most of the top hits are uninteresting, however there's one domain I couldn't figure out: What's the domain fh... | 133 | [
"dns",
"macos",
"dns-domain"
] | {
"A": "Facebook is allowing you to make a handful of mistakes to ease the login process. A Facebook engineer explained the process at a conference . The gist of it is that Facebook will try various permutations of the input you submitted and see if they match the hash they have in their database. For example, if you... | D | same_domain_answer_pool | stackexchange | CC-BY-SA 4.0 | https://security.stackexchange.com/questions/228918/why-is-fhepfcelehfcepfffacacacacacacabn-a-top-dns-query-from-my-devices |
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