# All Questions

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### Creating spheres In Matlab that change surface color depending data

I am trying to create a series of randomly distributed spheres in Matlab, three will be three sub-sets. I would like each subset to have a different color. I am using a structure because each sphere ...
101 views

### How does an automaton actually “compute”?

In my studies in computability I have come across the notion of the "machine", an abstract representation of a device that essentially computes. I have read about Turing Machines and Wolfram's binary ...
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### Sparse Matrix Library for GPU

Anyone knows a good library which implements basic sparse matrix operations such as transpose, SpMV eigenvalues etc. in GPU (cuda/opencl) . Thanks
4k views

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### Offline (visualisation) rendering in scientific computing

I need to simulate the movement of a large number of agents. The processes that govern the agents' movement are complex and so the entire process requires parallelisation. The output from this ...
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### In Comsol Multiphysics, is there a way to change parameter values when something happens in the solution?

I'm beginning to learn Comsol Multiphysics as part of a modelling course in my masters degree. Currently, we are modelling a circuit with a spark gap, which presents some problems for me. I'm using ...
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### What is the criteria for switching between Strassen's and Regular matrix multiplication Algorithms

Strassen’s Matrix Multiplication algorithm has theoretical performance of $O( n^{log_2 7})$. Regular MM algorithm has performance of $O( n^{3})$. At certain sizes of matrices (lets call it $n*n$),...
288 views

### Partitioning of mesh with 20 noded hexahedral elements [closed]

Is there a way to partition a mesh consisting of 20 noded hexahedral elements for parallel processing? I used METIS for partitioning mesh with 8 noded hexahedron elmements, which works fine but i don'...
114 views

### Representing an integral as a special function

In my research I have come across the following integral f = \int_0^{2\pi} \text{d}\theta \exp\left\{\frac{3}{2}(h_1 \cos^2\theta + h_2 \sin^2\theta + 2 h_{12} \sin\theta \cos\theta)\...
I have a nonlinear system of algebraic equations of special kind:  \begin{array}{rcl} x_{i}+y_{i}+z_{0,1}+c_{i,1}z_{1,1} & = & d_{i,1}, \\ x_{i}^2 + y_{i}^2 + z_{0,2} + c_{i,1} z_{...