Program Definition and 1000 Threads

Hi there A while back I updated Ubuntu to version 14.04. Before this, I could connect to the machine through TightVNC from my Windows 8.1 laptop. However after the upgrade things didn't run smoothly. It is now a known bug that usual VNC software can't connect to Ubuntu 14.04 because it uses...

I am trying to figure out why my program gives wrong results or not execute for big values. I am trying to compute how long before a bank account is depleted if it has an interest and 500 is withdrawn from it monthly. If I use 100000, it gives a value of 526years, which I think is wrong. And if...

Don't know where else in Phyiscs Forums or on the internet in general to ask this, and if it's inappropriate here, I apologize. My question is: is there an open source library or resource that I can access from a C++ program to perform symbolic computation on the level of something like Maple...

Hello, what PCB Design program do you prefer? What's the reason for your choice? I am freshman to PCB design and working on PADS from Mentor Graphics. But I have to admit it seems me a little bit unintuitive and I am unhappy with non-perfectly fitting transmission lines and prolonged editing...

... Continued from part 14. [SIZE="6"]The Sands of Duna [SIZE="5"]Part 15: Coming in fast [SIZE="1"]Collinsmark is not affiliated with Squad nor Kerbal Space Program We are coming in fast. Really, really fast. Might was well fold up the solar arrays. There's areobraking in the...

[SIZE="6"]The Sands of Duna [SIZE="5"]<Intermission (1/2)> An intermission of math. Skip this post (and the next) if you are not interested in the math. But since you are reading this on Physics Forums after all, there's a good chance you are interested. If so, read on. :smile...

I remember someone telling me that it's impossible to create a program that determines whether a given program runs forever, and that this requires a rigorous and long proof. Well, I was thinking about that today and the proof should be trivial -- shouldn't it? Proof. Let P be the set of all...

Hello, I am wanting to write a math/physics book or possibly a PDF online book and I'm wondering if anyone knows of any programs that exists for making pictures and drawing diagrams. I not just looking for something to make x-y graphs or 3-D graphs, I'm looking for something that designed...

Hi people, This is the first time I am writing a letter to a professor about my enrollment into their MS program. i have already completed a draft with my cgpa, current thesis, research interest etc. Now do I write the whole detail in the body of the email or i make a doc file and attach it...

... Continued from Part 4. [SIZE="6"]The Sands of Duna [SIZE="5"]Part 5: On your mark, get set, ... Now that we're in a low, roughly circular, Kerbin orbit, we need to find the position within that orbit that we will choose for are upcoming periapsis. We need to find the place in that...

... Continued from part 3. The Sands of Duna Part 4: We have ignition The author of this post (and story), collinsmark, is not affiliated with Squad nor Kerbal Space Program. We've waited long enough. So let's get this ship out the launch pad. Kerbals chosen for this mission are Melmon...

I forget where I saw this I think it was the Halo series with the Cortana AI but basically a program used a human brain for processing information and running itself. Would it be possible to have a program running on a human brain? Would the principle be similer to IBMs' TrueNorth chip...

So, I started trying to learn how to code a few weeks ago. I'm trying to currently learn HTML + CSS right now through Code Academy, but I am having trouble actually understanding the material and the purpose of some of the functions. I was hoping to get this product off of Amazon...

[SIZE="6"]The Sands of Duna [SIZE="5"]Part 1: Introduction So let's go to Duna! (Duna is Kerbal Space Program's [KSP's] analogue of Mars.) Here are some mission requirements that I set out for myself: [SIZE="4"]Mission requirements: Bring two or three Kerbals to the surface of Duna...

Is there a widely used free drawing program that is used in conjunction with LaTeX for math books and physics text? Thanks, Chris

Homework Statement In the previous few modules you studied the problem of minimizing ##\| Ax -b \|_{2}## by choice of ##x##. So far you've done this in Matlab using either the backslash operator or the command pinv. Now that you've been exposed to linear programming, you have the tools to solve...

The reason: I live in a small waterside town and we are very concerned over our water table. The problem is that we don't have a lot,if any, research or organized data to back up important decisions. The problem is that no one is informed on what they're talking about, many regulations...

Hello, Can anyone describe what its like going to University of Maryland college park and majoring in physics? Is it true that the teachers there only care about research and don't care about helping you? Also, are the class sizes 150 people (which means you can't get any personalized help)...

... Continued from part fifteen. [SIZE="6"]To the Mun! [SIZE="5"]Part sixteen: Home, sweet home [Figure 234: Service module separation (1/2)] [Figure 235: Service module separation (2/2)] [Figure 236: Reentry (1/2)] [Figure 237: Reentry (2/2)] [Figure 238]...

Hi guys, I was wondering whether atypical preparation is needed for admission to a mathematical physics program? i.e. Do you need to take Real Analysis, Topology, and other "rigorous" mathematics even if you are only a physics undergrad, or will such mathematics be taught from the ground up...

When I was a (very lonely) child, I used to play endlessly with this predator-prey simulation game: http://www.leinweb.com/snackbar/wator/ (You may have trouble getting this applet to run based on java updates, other security settings and what not). There is more information about it here...

I am 2nd year student transferring into computer engineering at a university in NC. I saw on the US News rankings that their engineering program was at the bottom of the rankings but still ranked nonetheless. Their facilities are up-to-date. What exactly makes an engineering program good or...

The Little Rocket That Could [Figure 1. Check this out.] This post illustrates an example of KSP rocket design. The following are the rocket's design goals: Get three kerbals and a bunch of science items to the Mun, in an Apollo style mission: such that two kerbals (and science) land on the...

This is my code: double of = 0; double from = 0; double to = 0; double ans = 0; private void button1_Click(object sender, EventArgs e) { Table.Items.Clear(); if (double.TryParse(Of.Text, out of) == true &&...

Hello! As a new past time I wanted to learn some coding. A friend of mine wrote a program and explained it from A to Z to me, it took like 2 hours. I wanted to play a bit with the program by modifying it. Here's the code: #include <stdlib.h> #include <iostream> #include <time.h> using...

Efficient launch into orbit. Designing a small, simple, efficient and stable launch vehicle to get into Kerbin's orbit can be done pretty easily. But in order to avoid building oversized, overcomplicated, drag prone behemoths (like the one I was using in the first post of this thread), one...

Homework Statement Need a free program to plot expressions in polar coordinates. For example, I want to plot the equipotentials for an expression in polar coordinates of the potential for a dipole charge, 4q and -q separated by a distance L. Homework Equations V=kq(4/r1 - 1/r), where r12...

"How hard can rocket science be anyway?" Kerbal Space Program is a sandbox type computer game that leans heavily on concepts of physics (don't let that scare you though, you don't need a calculator nor a book of equations to play it. It's ultimately very intuitive). Given the physics nature of...

It's mainly designed for those who want to teach at a junior college or whatever. I plan to stay in oil and gas, and I'm going to take: I'm not concerned about analysis, because I did well in undergrad and have a strong interest in it. However, I took Cal III in 2008, so I'm a bit rusty in it...

Are there any other places that offer engineering physics other than Cornell for masters or PhD? I couldn't find any except applied physics.

What is the process?

You people should open your eyes for the possible tsunami of new ideas coming from this meeting. Here's the deal: http://www.pctp.princeton.edu/pctp/Simplicity2014/Simplicity2014.html And the program: http://www.pctp.princeton.edu/pctp/Simplicity2014/Program-Simplicity-web.pdf

Here's what I have so far: std::string CalculusWizard::derivative(std::string& fx, const char & x, unsigned & n = 1) { if (n == 0) { return fx; } else if (n > 1) { while (n-- > 1) fx = derivative(fx, x); } // If here, find and return the derivative of fx ...

Im still not 100% sure on engineering, last year i was set on civil engineering but took a year off and changed my mind too mechanical as it was more broad. I have accepted this program from seneca college in Toronto and was wondering what other engineers/professionals think of the program...

I've debugged and run my program without seeing any results from my "destinationVariable". What could be wrong? sub main() call myfunction() end sub sub myfunction() static myClock As Single myClock = timer if (timer - myClock) > 100 Then destinationVariable += 1 // This...

Hey guys, I am studying astrophys but i have a programming module, so hopefully this is the right place to ask. I have a few questions that I am having difficulty with so I am going to pose it in the form of a program if that's cool? I can then take it apart to see how its done. I'd...

Asked to Withdraw from my program, asking for advise :( Hello everyone, I've recently been asked to withdraw from the physics program i was in due to my grades. I've talked to some school counselors about my situation, they told me i should take time off and reflect on why I did so poorly and...

I came across these rankings for Top Physics Schools according to student reviews. Interesting! (link deleted) 1 University of California-Santa Barbara 9.467 2 Brandeis University 9.133 3 University of Pennsylvania 9.100 4 Syracuse University 9.056 5 University of California-Los Angeles...

Hi everybody, Like many people at the moment, I'm in the position of having to choose where I'm going to go to graduate school for a PhD. I'm contemplating two different schools. The first school is my undergrad institution, where I would work with a well known and influential advisor that...

Homework Statement F(x) = exp(-a x^2) cos bx for -100 =< x >= 100 , a=13 and b=7. Homework Equations ... The Attempt at a Solution program main implicit double precision (A-H,O-Z) implicit integer (I-N) DO I = -100,100 X = I * 1D0 F = DEXP(-A * X**2) * DCOS(B * X)...

As I understand it, Felix Klein sought to classify geometries with respect to what groups G that respected the structure of the given space X. Lately i read in an article on "the history of connections" by Freeman Kamielle that Cartan wished to generalize this notion. Is it correct to think of...

Could someone advise me on starting a PhD program and leaving after 2 years with a Masters? Do people do this and what are the problems associated with such a course of action? For example is getting recommendation letters a problem and so on... The reason I need to know about this is that it...

I'm currently in a predicament where I'm not sure what school i should accept for physics. I've been accepted to both York U and Ryerson, and am waiting (hopefully) for my UofT acceptance. But as i am now, if i were to pick from either York U or Ryerson, which of the two would have a better...

Hi. I've been given an assignment, a starters assignment I should say, for Matlab. This is mostly about learning the basic functions of the program and it's my first ever experience with it. I hope I'm posting in the correct sub-forum. Homework Statement We're given a triangle ABC...

I have a Epson PictureMaid and HP 7410 Printer that I want to install onto my new Win 7 Home Premium desktop. I have the old disc for both of them and they both are not compatible. I know there is a way to run compatibility in Win7 and install the programs. I forgot how to do it, can anyone give...

what is program used as attached.thank you!

I've heard that often in the sciences(in my case, physics), that students often go straight from their undergraduate degree to a Phd. I've a also heard that this saves some time and money as you basically earn a masters as you go while being funded. Now at my school there is an accelerated...

Homework Statement mass = 100 Kg Cross Area = 4 Drag = .4 Initial velocity = 17.59 m/s Gravity = 9.81 Angle Changes according to the position of the mouse Terminal velocity = 31.649 ; Don't know if its relevant but I calculated this Homework Equations Y1 :=...

Hi! I would like to compile some *.for files (only standard Fortran77 statements) which only contains some subroutines and functions and link them with a *.res resource file and a *.lib library file (supplied by developers) into a windows executable. Is there any FREE program to achieve...

So I'm currently finishing up my undergraduate and heading to graduate school for medical physics. I have narrowed down which schools I want to go to to either UPenn or Vanderbilt U. UPenn would be for a Master's of Medical Physics with a concentration in radiotherapy and Vanderbilt U would be a...