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Questions tagged [simulation]

Simulation is the imitation of some real thing, state of affairs, or process. The act of simulating something generally entails representing certain key characteristics or behaviours of a selected physical or abstract system.

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Advice on starting a large multi-threaded programming project

My company currently runs a third-party simulation program (natural catastrophe risk modeling) that sucks up gigabytes of data off a disk and then crunches for several days to produce results. I will soon be asked to rewrite this as a multi-threaded…
Sisiutl
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Probability Simulation Error not Converging

In an interview, I was given the following problem to solve initially using pen/paper, then via a program to verify the result. The question is as follows: There are three people A,B and C. Each person is capable of hitting a target with a…
Switzy
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How to Build a Sensor Simulator for Android?

I am building a application for the Android platform and I would like to use the accelerometer. Now, I have found a very nice application for sensor simulation (OpenIntents' SensorSimulator) but, for what I want to do, a would like to create my own…
Hugo
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Should I use Threads or Tasks - Multiple Client Simulation

I am writing a client simulation program in which all simulated client runs some predefined routine against server - which is a web server running in azure with four instances. All simulated client run the same routine after getting connected to…
Tejas Vora
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Python alternative to Java applet?

Is there an alternative to making educational Java applets for physics simulations like projectile motion, gravity, etc?
hershey92
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Is a functional language a good choice for a Flight Simulator? How about Lisp?

I have been doing object-oriented programming for a few years now, and I have not done much functional programming. I have an interest in flight simulators, and am curious about the functional programming aspect of Lisp. Flight simulators or any…
Frank Henard
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IE9 Compatibility Mode: What version is it simulating?

I'm using the latest IE9, and test my websites in compatibility mode. But what version of IE is this actually simulating/replicating? It's not clear. Is it 6, 7 or even 8?
Tom Gullen
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Wave Simulation with Python

I want to simulate a propagating wave with absorption and reflection on some bodies in three dimensional space. I want to do it with python. Should I use numpy? Are there some special libraries I should use? How can I simulate the wave? Can I use…
kame
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How is Monte Carlo Tree Search implemented in practice

I understand, to a certain degree, how the algorithm works. What I don't fully understand is how the algorithm is actually implemented in practice. I'm interested in understanding what optimal approaches would be for a fairly complex game (maybe…
Michael Ramos
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XCode 9.1 - Location simulation went missing

I just updated my XCode to 9.1 today, and surprisingly I can't find "Allow location simulation" in scheme setting, please refer to the screenshot below: Has any one got the same problem? And any suggestion that I can fix it? Apple's getting worse…
hoang Cap
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numpy positive semi-definite warning

In a Python script I'm writing I am simulating multivariate normal random vectors with the expression np.random.multivariate_normal(np.zeros(dim_obs), y_cov) My script runs, but generates the following warning: RuntimeWarning: covariance is not…
Taylor
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Fluid simulation boundaries and advect

This fluid simulation is based off of a paper by Stam. On page 7, he describes the basic idea behind advection: Start with two grids: one that contains the density values from the previous time step and one that will contain the new values. For…
qwr
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How to simulate a corrupt state exception in .NET 4?

Well, in .NET 4 Microsoft added the HandleProcessCorruptedStateExceptions attribute: HandleProcessCorruptedStateExceptionsAttribute Class I want to test this feature. How can I bring my application to a "corrupt state"?
user286353
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Physics engine: use double or single precision?

I am making a rigid body physics engine from scratch (for educational purposes), and I'm wondering if I should choose single or double precision floats for it. I will be using OpenGL to visualize it and the glm library to calculate stuff internally…
user3075741
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How to emulate REPEAT() in SQLite

Most relational databases have some sort of REPEAT() string function, for instance: SELECT REPEAT('abc', 3) Would yield abcabcabc SQLite on the other hand has a very limited feature set. The functions supported by SQLite are listed…
Lukas Eder
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