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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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Simulation in java

I am novice to the simulation world, and want to learn how programmers develop real simulation projects in java. I would use eclipse. Could anyone point to other things that I need to know (e.g. other packages, software etc. and their purposes)? I…
Arif
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Generating data from exponential distribution by incorporating correlation between two random variables

Suppose X~exp(.67) , Y~exp(.45) and Z~exp(.8). Now X is correlated with Y with a correlation coefficient -0.6. Again, X is correlated with Z with a correlation coefficient -0.6. How can I incorporate this correlations to generate random variables X,…
user149054
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How to simulate slow connection with Javascript?

I've got a request for a research website which will test user's behavior when doing repetitive tasks on a normal and slow Internet connections. I'm wondering if there are any JS libraries I could use for bandwidth throttling in the different…
Goran Stoyanov
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Visualization of a discrete-event simulation on a grid / warehouse layout

I need to simulate a warehouse with several autonomous vehicles moving on a given layout with simple priority rules. In my understanding, the problem can easily be tackled with discrete-event simulation (DES) and I would use SimPy for this. The…
mondano
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Visual Programming Language Control

Is there a .NET based (WinForm or WPF) control that allows simple visual programming (assignments, boolean expressions, and math expressions)? Something like Microsoft VPL, only embeddable and supported.
Jake Pearson
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Simulate Compound poisson process in r

I'm trying to simulate a compound Poisson process in r. The process is defined by $ \sum_{j=1}^{N_t} Y_j $ where $Y_n$ is i.i.d sequence independent $N(0,1)$ values and $N_t$ is a Poisson process with parameter $1$. I'm trying to simulate this in r…
Slangers
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Stubbing functions in simulations

I'm working on an embedded C project that depends on some external HW. I wish to stub out the code accessing these parts, so I can simulate the system without using any HW. Until now I have used some macros but this forces me to change a little on…
eaanon01
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Implementing semi-implicit backward Euler in a 1-DOF mass-spring system

I have a simple (mass)-spring system wih two points which are connected with a spring. One point is fixed at a ceiling, so I want to calculate the position of the second point using a numerical method. So, basically I get the position of the second…
Etan
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How to prevent or detect "Location Simulation" by Xcode on your application in production ? [Big Issue]

I guess this is a huge flaw in iOS .. like currently it's happening for PokemonGo currently the normal users are able to spoof device location to a desired one in non-jailbroken devices .. any idea or workaround to detect location simulation by…
mustafa96m
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What is the difference between using an initial block vs initializing a reg variable in systemverilog?

What is the difference between the following two examples with regards to simulation? A) reg a; initial a = 1'b0; and B) reg a = 1'b0; Is it different for logic variables?
supernun
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Why should an HDL simulation (from source code) have access to the simulator's API?

This is a question inspired by this question and answer pair: call questa sim commands from SystemVerilog test bench The questions asks how Verilog code could control the executing simulator (QuestaSim). I saw similar questions and approaches for…
Paebbels
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Best practices when implementing a scientific simulation methodology from scratch

in the field of scientific simulations (physics) I am thinking about developing some new simulation package in C/C++. What do you think would be the best practices when starting here from scratch? Can you recommend some bibliography? Thanks
Open the way
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More memory efficient way to define many objects of the same type

So, I'm foraying into the world of plasma simulation. Now, while I'm aware that top-level simulations are written in fortran and have ultra-memory efficient subroutines and specialized code, I'm hoping to just run some low-level simulations. My…
Yoshi
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How to make a sliding member in Processing with particle systems

I am simulating particle system in Processing. Based on Daniel Shiffman’s Nature of Code book, I did a spring and then I started experimenting with sliders to do one that has longer or shorter length based on a slider. Now, I am trying to make one…
Apollon1954
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Using FRP to model road network with jams

I am currently trying to understand arrows and FRP, and I came upon a question, which I cannot seem to map to FRP, namely how to model a road network. I thought I could model a road network as Arrows, where each Arrow represents a road segment. It…
Martin Drautzburg
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