Quantitative Definition and 74 Threads

How much electrons do nuclei contain? Are there any numeric estimates around? I am quite aware that while estimating the numbers might be somewhat simple exercise for quantum mechanics, it is still complicated numeric computation which is not very closely related to observables, so somewhat...

Hello, I posted recently asking for information on a physics PhD. I am a second-year Data Science and Physics major at Northeastern University (My school has combined majors that are like double majors but cut a few classes out of each major). As I meant to indicate in the previous post, I am...

Hi everyone. I'm currently a 3rd year quantitative/mathematical/cognitive psychology graduate student in a PhD program finishing my masters after this semester. In it, I'm using the mathematics of quantum mechanics to model cognitive phenomena. I was accepted into a physics PhD program as an...

Hello, I'm looking for any advice on how to prepare myself for a starting position as a quantitative analytist (quant). I'm currently doing my Master's in astrophysics, where I for the last 1½ year have been practicting my coding skills, as I found myself gravitated towards the industry's data...

I'm sure that many PF members are fans of the seminal book The Visual Display of Quantitative Information by Edward R. Tufte But books on dead trees can only show static information. How about quanitative information depicted with the help of audio and/or video? I would like to nominate...

Hello, I've been asked to talk about a time where I have used quantitative analysis. I once used simulation of the solar system to find out more about things like close approaches, and Gladmans criteria I was wondering if simulation is considered a quantitative method of analysis and if the...

Hello everyone.. Here is the thing I am working on a project where I am manufacturing Furfural from bagasse. The reaction is thermodynamically possible. I took some amount of bagasse and added it to a reactor at atmospheric pressure. I then added diluted Sulphuric acid which acts as catalyst...

Homework Statement Question:[/B] Imagine you are in a massive desert. There is a tower of height H. A light source at the top of the tower can emit light in all directions. You are a person whose eyes are at a height h (h<H) above the ground. The refractive index of the air varies as μ=kd where...

Here I would like to take the opportunity to suggest the addition of a subforum for the purpose of discussing quantitative and mathematical economics. This idea came up after I posted in a few recent topics (1st topic, 2nd topic). I am also partially motivated by QuantEcon, a website pointed out...

I am studying for a comprehensive exam on dynamic contrast enhanced MRI (DCE-MRI) and questions have come up in my practice talks about dynamic susceptibility contrast MRI (DSC-MRI). In DCE-MRI changes in signal in an artery and the tissue are converted to contrast agent concentration vs time...

Adenosine triphosphate cycle is what releases stored energy for the body to use throughout to do work, right? So I'm just curious if is easy to guess what the total output in an average human converted to electrical potential in a "sustained demand" versus total conversion of entire consumable...

Max: 3x + 5y s.t. x + 2y ≤ 5 x ≤ 3 y ≤ 2 x,y ≥0 By the simplex method, the profit is $14. Using sensitivity analysis I changed the RHS of the 1st constraint and keeping everything else constant, I get the best profit value of $19 at RHS of 7. What other methods can I use such as the...

Greetings fellow PFers, and happy Thanksgiving, I learned recently about the quantitative portion required by many institutions when a letter-writer submits their letter for a student's graduate school application. Apparently it's typical for a professor/advisor to have to answer how their...

After two years of Biology i switched to Computer Science and i wish to gain the necessary skills to become a "computational biologist/neuroscientist" (Here we don't have the "major/minor" system, we can choose one subject and, at least, 2 "external" exams) The problems are: 1) math level...

Hi everyone, Could you please tell me how would you rank these PhD for someone looking for a future career in the financial quant industry? (assuming I have math background and decent programming skills). Thank you in advanced! Between parenthesis are the specific research groups found in each...

Homework Statement Here is a small part of an EESEE data set, "Nutrition and Breakfast Cereals," that describes the nutritional content per serving of 77 brands of breakfast cereals: What are the individuals in this data set? For each individual, what variables are given? Which of these...

Do you know any economical quantitative electrostatics experiments for the university level? I'm asking for some experiments for undergraduates in the electrostatics context. We have a Van-de-Graaff generator in our fundamental physics lab but this kind of devices are useful for demonstration...

Hi all, I was doing HEP-EXP in a US institution, got MSc and started Phd. However in the middle of it I decided that job prospects weren't good as far as tenure track positions are concerned and I found a job as a quantitative analyst in a hedge fund. I work there for the past 18 months. But...

I am considering doing a one year Masters Program at my school in quantitative finance because: It is a very good program that is offered at my school which I could get into without taking any GRE's qualifying exams, or even application essays It would allow me get a relatively high paying job...

I"m running through a couple options right now in my job hunt. I am a career changer who is aspiring to become an actuary. I only have 1 exam, and after a few months of job hunting without success for entry level actuarial, I have decided I also need to consider 'related' jobs, so I can make...

How do I go about analyzing this scenario? Consider the following: You’ve been hired by a company who is interested in finding a way to decrease incidents of offensive interpersonal behavior at work. The company has identified one department that seems to have a big problem with offensive...

Hello, I am studying general relativity right now and I am very curious about the Ricci tensor and its meaning. I keep running into definitions that explain how the Ricci tensor describes the deviation in volume as a space is affected by gravity. However, I have yet to find any quantitative...

Homework Statement Hey, if anyone could help with this question I am very stuck on (not homework) I would really appreciate it. A group of astronomers make observations of the Pandora cluster of galaxies spanning 600 arcseconds in the sky. X-Ray astronomers found it to have a λmax of...

Unlike many of the CS majors, Physics undergraduates have a hard time getting internships at startups, and some of the bigger companies have us do works that's simply boring or unrelated (ie database management, front-end web programming, etc). I know there are a couple quants that hang out...

Hi all, I understand some PDE is linear like \frac{\partial f}{\partial t}+\frac{\partial f}{\partial x}=0 while some PDE is nonlinear like \frac{\partial f}{\partial t}+f\frac{\partial f}{\partial x}=0 Some PDE is weak nonlinear and some is strong nonlinear. I am wondering whether...

Homework Statement A 1.00 × 10^-4 M NaF solution can be prepared in several ways. Two methods are listed below. The formula weight of NaF is 41.9984 ± 0.0003. For each method use propagation of error methods to determine the absolute and relative uncertainty in the final concentration...

By quantitative cosmology I mean with real times, distances, expansion rates, horizons, CMB stationary observers etc , derived from the standard model fitted to data. I don't mean ideas about conditions shortly before or after the start of expansion, although that is very interesting too. The...

I'm interested in becoming a Quantitative analyst, more so library quant (my course has introduced me to finite difference/monte carlo/Java thus far) as opposed to risk etc. My dilemma is that I want to apply for internships but I'm not sure what to apply for, all the undergrad internships seem...

I discovered Physics Forums when I searched for PEMF on Google. I became interested in PEMF when I was asked if I could repair two PEMF machines. (I have acquired a reputation as a "Mr Fix-it" in our small community here in Spain!) The first was a small portable device with a hand...

I am looking at the cross-sectional shape of a sagging membrane. I have several theoretical models, neither of which fit perfectly. So rather than comparing values, I'm comparing shapes. One model fits fairly well, however I'm unsure of which quantity is correct to specify a 'goodness' of a...

Hi everyone and happy New Year. The Standard Model shows very specific and measurable couplings of the Higgs boson with the W and Z fields. What QUANTITATIVE measurements have been done to verify that these couplings are as predicted? Thanks and looking forward to your replies. A lot of...

What are the different kinds of quantitative/math heavy roles in finance? I'm doing an undergraduate maths degree in the UK and beginning to think about my eventual career options. I know that finance as a field is one where a lot of maths/science graduates end up working in, but I really don't...

The Federal Reserve announced an indefinite $40 billion per month round of quantitative easing. This new phase of easing will combat a weakening economy, strengthen confidence in the financial system and assure that the central bank's mandates on unemployment/housing are met...

Is Time just a quantitative description for fastness or slowness of motion?? I am a bit confused about how to express what I have been thinking about this topic but will try. When we say that time is going fast we compare it with our daily fastness of motion(??).. We imagine stopping time as...

The study of social science phenomena using empirical data such as register data* are very often approached with an regression model. One of the most used approaches is a linear model where the parameters is estimated with ordinary least squares. The models of this type is often called...

The difference between the number 0 and 1 is 1. So is the difference between 3 and 4. Proposition: The difference between 0 and 1 is much larger than the difference between 3 and 4. That is because regardless of how many decimal places you go to in the calculations, there is a...

hi there i was looking at this video on utube and have two questions regarding it. at 1:02. the person starts to rotate the apparatus. my first question is that HOW CAN U DRAW THE FREE BODY DIAGRAM OF THE MASS ATTACH TO THE SPRING while its rotating? i know there is the mg downward from...

http://www.markjoshi.com/downloads/advice.pdf http://en.wikipedia.org/wiki/Quantitative_analyst Which sub-specialty of mathematics or physics, excluding statistics is the most pertinent to quant jobs(especially model validation quant)?

Can mathematics only be applied when there are numbers involved? I know there are mathematics branches like mathematical logic that doesn't deal with numbers, but do those areas have applications outside of mathematics?

I'm a 20 years old female, need some guidance from seniors. :) It's been my dream to work with rockets, propulsion, and everything related to outer space. In short: NASA. I understand that the competition in this field is fierce considering skills in numeracy (physics/math). I took Science...

I've been reading through posts about the jobs with degree in natural/physical science. And the common statement is that, if money is your biggest concern, you should not go for phd in these subjects. What is the minimum salary per year that one earns if he concerns money is the most...

I'm filling out a webform application for a position as a Financial Analytics Analyst/Developer The job requirements list: "At least 1 year experience in mortgage servicing, fixed income, financial engineering, or quantitative analytics" The webform actually asks about the amount of...

Me: an undergraduate math major, two years left, very well qualified, very disillusioned with the idea of an academic career, considering a switch to finance. I'm wondering what would be involved in making this switch. This is all hypothetical, but if I were to do this what should I do in the...

So i took the test today and did personally well in the quantitative section...680...but i ran out of time with 3 questions left when i did the 28 question section. How many points do you think that cost me and do you think it would have been better to randomly select answers?

I am supposed to take a quant analysis course this summer but it has been awhile since I took chem I & II. How much of the general chem courses carry over and what should I focus on as I attempt to review prior to this course? Thanks!

Hi all! I've been doing a lot of quantitative analysis on research work (PhD) within the social science domain. this has involved extensive identification and explanations on any repeating themes, linkages and whether they relate and patterns between two variables. as part of this I have...

How do you get a quantitiative answer from these theories? Like, how did Einstein calculate the gravitational deflection of a light ray? How does one go from abstract algebra in quantum theory to quantitative descriptions of orbitals and chemical bonding? Can string theory make a single...

I like to keep my options open. I'm doing a combined BA/MA in mathematics right now, and hope to go on to get a PhD. That being said, I think a lot about how I will make my living. Of course, I'd love to have a great Professorship at a great university and do groundbreaking research, but the...

I'm a little confused about what the ΔΔCt value means and how its calculated - could anyone verify? Also, I'm reading lecture notes that say "2^ΔΔCt assumes efficiency is 100%". I'm really baffled by this and would appreciate any guidance.