Numerical

MUI(MM5 User Interface) is a web based user interface for a numerical weather prediction model written with php and bash scripts and awk for linux OS. The application is very easy to install, use and customize to suit your needs and could be easily ported to work on other operating systems. Platforms: *nix, PHP, BSD

This is done by assigning a numerical level for each user and choosing the level required to view a post.InstallationUnpack and upload it to the /wp-content/plugins/ directory.Activate the plugin through the 'Plugins' menu in WordPress. Requirements: - WordPress 2.0.9 or higher Platforms: Windows, Mac, *nix, PHP, BSD Solaris

There are numerical values assigned to each type of view and feedback, which are used to create a 'popularity score' for each post.The values assigned to each view and feedback type are editable and can be changed at any time. When you change any of these values, the 'popularity score' for all... Platforms: Windows, Mac, *nix, PHP, BSD Solaris

OOFEM is free finite element code with object oriented architecture for solving mechanical, transport and fluid mechanics problems that operates on various platforms.The aim of this project is to develop efficient and robust tool for FEM computations as well as to provide modular and extensible... Platforms: C and C plus plus

C-Library & Matlab Toolbox implement a numerical solution of Poisson equationdiv(e*grad(u))=ffor Cartesian 1D, Cartesian 2D and axis-symmetrical cylindrical coordinates with respect to steeply varying dielectrical permittivity e.Library uses regular rectangular grid with mixed boundary... Platforms: Matlab

The Matlab code in this folder implements 1D-3D NUFFTs via fast Gaussian gridding. The convolution loops are written as C programs to be compiled as mex files from the Matlab command prompt. Further mathematical details about the code can be found in L. Greengard and J. Lee, "Accelerating the... Platforms: Matlab

InPolyedron detects points inside a manifold closed surface (even non convex ones). The normal orientation is assumed to be outwards. Warning there is no check for closed surface or normal orientation, open surfaces will give nonsense results.In the limit of numerical accuracy, points lying on... Platforms: Matlab

This 15-line matlab program solves the nonlinear reactiondiffusion equation, called Kolmogorov-Petrovskii-Piskunov(KPP) equation to generate patterns (ribbons and rings).The numerical method is simple and program is easy tounderstand, and it can be extended to simulatedmore complex systems. The... Platforms: Matlab

The function is based on the mathematical treatment of rotating rotors in "Principles of Helicopter Aerodynamics" by Dr. J.Gordon LeishmanThe numerical method does this by using Blade Element Momentum Theory (BEMT) to calculate the inflow along the length of the blade, then using that inflow and... Platforms: Matlab

zpkfit uses the nonlinear least-squares fitter (lsqnonlin) to fit an analytic model of any (fixed) number of poles and zeroes to numerical (presumably measured) frequency response data. It takes as arguments a frequency vector, a frequency response vector, and vectors of the initial guesses of... Platforms: Matlab

LU Decomposition is applied to a sparse banded matrix. We show how fill-ins can make solution by elimination not manageable. The same matrix is used to solve the Poiseuille flow problem in a rectangular channel using the finite differences approach. The result obtained using this numerical... Platforms: Matlab

RADIATION HEAT TRANSFER- SHAPE FACTOR CALCULATION (MECHANICAL ENGINEERING) The file, sfactor.m ; (example) xxx = sfactor(a).calculates shape factor between two flat surfaces with arbitrary orientation and location. (sfactor12.m and sfactor16.m are similar to sfactor.m but with 12 and 16... Platforms: Matlab

In the present program three methods are used to solve a heat conduction problem. This problem is given in M. N. doOCozisik, Heat Conduction, Wiley, New York, 1980. We use pdepe, short times solution based on analytical inversion of a Laplace transform and finally a numerical solution based on... Platforms: Matlab

The inversion of Laplace transforms is performed using two methods: (1) the Zakian method and (2) the Fourier series approximation. Results are in agreement with analytical solutions. The Zakian method presents problems for transcendental functions. The Fourier series gives better results when... Platforms: Matlab

Ultrasim is an interactive, menu-oriented simulator for finding the sound field from transducers, primarily for medical ultrasound. Ultrasim can handle 1D, 1.5D and 2D linear and phased arrays, and flat and curved arrays with many different footprints such as rectangular and elliptical. It also... Platforms: Matlab

The bulirsch-Stoer single-step ODE propagator has come to MATLAB in form of a MEX adaptation of Juergen Dietel's Numerical ODE solver. This may very well be the fastest single-step numerical propagator released on the Mathworks FileExchange.All functions are written in c++ and must be compiled to... Platforms: Matlab

Learn how to use the Profiler tool, vectorized functions, and other tricks to writing efficient MATLAB code. This article includes how to convert any array into a column vector, bounding a value without if statements, and repeating/tiling a vector without repmat.Contents: * Introduction * The... Platforms: Matlab

Identifying the Pareto Front from a set of points in a multi-objective space is the most important and also the most time-consuming task in multi-objective optimization. Usually, this is done through so called nondominated sorting. In this package, two efficient algorithms are provided to find... Platforms: Matlab

This short tutorial illustrates basic numerical matrix computation in C. I encourage any comments from expirienced mex programmers for style improvement.This is a nice little function to demonstrate how you can interface MATLAB and C style matricies. There is some example code included showing... Platforms: Matlab

C-Library & Matlab Toolbox implement a numerical solution of Poisson equationdiv(e*grad(u))=fin Cartesizan 3D coordinates with respect to steeply varying dielectrical permittivity e. Library uses regular rectangular grid with mixed boundary conditions, FVM-based equation discretization and... Platforms: Matlab