Darcy Law Equation

In this paper i try to associate a linear dynamical system dX/dt=AX to the PDE wave equation.So i discretize the space to step h,and set the limited develpment.it is well application also for spherical wave.J.C Willems gives good standing from ODE to PDE,and From PDe to ODE. Platforms: Matlab

Boundary Control via Modified Smith Predictors for Beam Equation with Delayed Boundary MeasurementSmith predictor and its variants are applied to the boundary control of Euler-Bernoulli beam equation with delayed boundary measurement. The well-known instability problem due to a small time delay... Platforms: Matlab

The EJS Linear Charge Gauss's Law model shows a Gaussian surface and allows for the measurement of the charge enclosed and surface area of the surface. Users can change the radius of the linear charge as well as the size of the Gaussian surface. Users can modify this simulation if Ejs is... Platforms: Mac

The Newton's Law of Cooling model computes the temperature of an object of mass M as it is heated by a flame and cooled by the surrounding medium. The model assumes that the temperature T within the object is uniform. This lumped system approximation is valid if the rate of thermal energy... Platforms: Mac

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

Law Leecher is a multi-threaded web crawling tool which extracts laws from the EU law database PreLex (http://ec.europa.eu/prelex/). It's written in Ruby. The latest version is 1.4 You can also visit the SourceForge project management homepage. You will most probably find the version history... Platforms: *nix

The LaTeX Equation Compiler is a preprocessor for LaTeX files that enables numeric and symbolic calculations. It reads equations specified by special keywords in the LaTeX file, manipulates them and calculates numeric values of variables. Platforms: *nix

Learn Special Relativity and General Relativity with this program. Includes thirteen educational parts, three games, a discussion board, a nice chat, a story and a bet. Full edition. Excellent animated, advances interactive features and easy movie control. It will surprise and enjoy. Platforms: Windows, Windows CE

The Math Homework Maker, is a FREE software which can solve all your homework. If you are a pupil or a student, needing help with your math homework or just want to check them, Then you must have this software. The Math Homework Maker covers everything you need, from elementary school up... Platforms: Windows

Converber is a unit converter. It is a powerful software utility that will help make easy conversions between 911 various units of measure in 30 categories. Converber converts everything from length and force to flow and temperature. See some of the features listed below. - Gives immediate... Platforms: Windows

Fraud detection toolto enable the analyst/researcher to determine if the distribution of a particular population of values, e.g. transaction amounts, comply with that which would be expected using Benfords Law. Six tests: Test first 1,2 or 3 digits, last 1 or 2 digits or second digit... Platforms: Windows

In this game you need to complete a equation by picking filling in numbers from a grid of numbers. The equation becomes longer and harder as the game advances. The faster you complete the equation, the higher the score you get. Platforms: Windows

Laeqed is a Latex equation editor specifically targeted at producing PNG images of math equations for use on web pages. Laeqed runs wherever Java and Latex runs, i.e. Linux, Windows, Mac... The Latex equation, preamble, postamble and dvipng options are saved with the PNG as meta data. This... Platforms: *nix

Python Web Graph Generator is a threaded Web graph (Power law random graph) generator. It can generate a synthetic Web graph of about one million nodes in a few minutes on a desktop machine. This software implements a threaded variant of the RMAT algorithm. A little tweak can produce graphs... Platforms: *nix

SUNDIALS (SUite of Nonlinear and DIfferential/ALgebraic equation Solvers). SUNDIALS consists of the following four solvers: - CVODE solves initial value problems for ordinary differential equation (ODE) systems. - CVODES solves ODE systems and includes sensitivity analysis capabilities... Platforms: *nix

Equation Service is a program that uses pdflatex to produce small PDF files containing equations and other text. You can either do the input and typesetting in the main Equation Service window and then drag and drop the resulting PDF into your application, or highlight text in the other... Platforms: Mac

PDF Equation gives you quick access to LaTeX's typesetting power in almost every Mac OS X application. Just type a LaTeX snippet, render a it and drag the resulting PDF file into your Keynote presentation or wherever you need it.PDF Equation is document-based, so you can save your equations for... Platforms: Mac

Basically an equation editor, however not focused over one single equation, but you can write your mathematical artwork over several pages. You can easily move and copy your equations and expressions by mouse touch. Illustrate your equations using hand-drawing tools. Use symbolic calculator and... Platforms: Windows

AIC Audio Player is a freeware program, for playing audiofiles as WAV, PCM, MP3, MP2, WMA, OGG, AAC, M4A, MP4(AAC), MP2 AAC, AMR, CDA, FLAC, APE, AMR, AWB, PCM, a-Law, u-Law, MS ADPCM, IMA ADPCM, GSM 6.10, M3U, PLS, CUE with FLAC, CUE with APE, CUE with WAV, etc... AIC Audio Player... Platforms: Windows

Taylor2d is a small, simple software specially designed to help you visualize a Taylor equation in two dimensions. Taylor2d changes the perspective of a normal, three dimensional simulation to a 2D one. for WindowsAll Platforms: Windows