Differential Geometry

Geometry calculates geometric figures such as spheres, triangles, cones, trapezoids, circles and cylinders. Also, it has an application in engineering to calculate the flow and geometry in an open trapezoid channel. You can calculate the area, volume or perimeter of a: Square Trapezoid Sphere...

This software aims help students of analytic geometry courses by visualizating several key concepts.

The Protein Geometry Database hosts the development code for a flexible database for searching protein geometry, as well as a library for accessing this data for protein modeling & refinement programs.


Platforms: Windows, Mac, Linux

A common way to create new compound widgets is to inherit Frame, create everything you need inside it and pack this base Frame on your application.This script is an alternative to this method, that sets geometry methods and options from a wiget to another.


Platforms: Windows, Mac, *nix, Python, BSD Solaris

This contribution provides functions for finding an optimum parameter set using the evolutionary algorithm of Differential Evolution. Simply speaking: If you have some complicated function of which you are unable to compute a derivative, and you want to find the parameter set minimizing the...


Platforms: Matlab

This programs gives solution of 2nd order differential equation with variable coefficients by Rayleigh Ritz method using linear interpolation


Platforms: Matlab

FDE12 solves an initial value problem for a non-linear differential equation of fractional order (FDE).This is an implementation of the predictor-corrector method of Adams-Bashforth-Moulton described in [1]. Convergence and accuracy of the method are studied in [2]. The implementation with...


Platforms: Matlab

A simple example for beginners in MATLAB to solve the differential eq using built in functions of differential equation solvers.Copy the files in the workspacerun "dxdt_solve"dxdt.m contains differential equation


Platforms: Matlab

]In this application is descriptioned homogen-differential equations generally solutions with matlab symbolic tool's.Generally homogen-differential equation's form is (where R=[d/dx] ) sum {i=1:n} [C_(i)*R^{i}].y=0Here, firstly sub function-[regsolution.m] solving differential equation's...


Platforms: Matlab

The linear Stochastic Differential Equation (LSDE) is very widely used equation in the noise analysis of LTI circuits. It involves the input signal to be perturbed with Gaussian white noise. To find the solution statistics like mean, varaiance is a tasking job and requires full power of...


Platforms: Matlab

This file uses import_stl_fast to pull in model geometry and write an appropriate .facet file. If you require the ability to import binary stl files, import_stl_fast can be replaced with another importer from the file exchange.The current version does not have inputs for different materials.


Platforms: Matlab

One of the fundamental motivations for feature selection is to overcome the curse of dimensionality problem. This code presents a novel feature selection method utilizing a combination of differential evolution (DE) optimization method and a proposed repair mechanism based on feature distribution...


Platforms: Matlab

This code implements a Markov chain Monte Carlo algorithm which automatically and efficiently tunes the proposal distribution to the covariance structure of the target distribution. This is achieved while maintaining the target distribution as the stationary distribution of the Markov chain. The...


Platforms: Matlab

This software is documented in the Journal of Structural Geology article:"Fold Geometry Toolbox - Automated determination of fold shape, shortening, and material properties"by Marta Adamuszek, Daniel Walter Schmid, and Marcin Dabrowski. FGT is a program to analyze fold geometry in 2D. This...


Platforms: Matlab

The Ikeda Delay Differential Equation model shows the dynamics of a delay differential equation that depends on the value of the dynamical variable x(t) at a previous time x(t-?). Sprott shows that these systems provide elegant examples of chaos in systems that are too simple to exhibit chaos...


Platforms: Mac

The EJS Differential Galactic Rotation Model illustrates the model of galactic rotation proposed by Jan Oort in 1927. In Oort's model most of the mass of the galaxy is concentrated at the center. Stars move in circular orbits around the center, with orbital speeds that are inversely proportional...


Platforms: Mac

This is a Java program that calculates commonly used parameters related to airplane wing geometry such as area, taper ratio, aspect ratio, sweep, etc. As an aerospace engineer involved in airplane design, I find that I'm calculating these parameters all the time, so I wrote this program to help...


Platforms: Mac

Interactive geometry software for performing interactive calculations, visualization and modeling in math, science and engineering. The construction concept and the interactive visualization are the basis of the program. Designed to be easy-to-use, it provides a powerful mathematical platform...


Platforms: Windows, Windows 7, Windows Server

Backup4all is an award-winning backup software for Windows. Backup4all protects your valuable data from partial or total loss by automating backup tasks, password protecting and compressing it to save storage space. Using Backup4all you can easily backup to any local or network drive, backup to...


Platforms: Windows

The program PEEI 3.0.0.0 calculates a numerical solution of almost all the systems of partial differential equations who have number of equations equal or greater of the number of unknown functions.


Platforms: Windows