Search Results for "nonlinear"

...Although the code is primarily intended for investigations of fiber links, fiber amplifiers and fiber lasers, it can be applied to any other setting for which the governing equiations are valid. The physics included in the code is based on a generalized nonlinear Schrödinger equation, including higher order dispersion, stimulated Raman effect, gain with bandwidth limitation and saturation, loss, and saturable absorption. Disclaimer: The simulation code is provided free of charge for the use of the academic community only. We kindly ask the users to acknowledge use of the code in academic settings. ...

RAtom solves nonlinear Kohn-Sham equation for the neutral atom. The adaptive algorithm based on finite element method (FEM) is implemented. Discretization of the differential eigenvalue problem is done by finite element method with Lobatto polynomials as a basis functions. High order Gauss quadratures are applied in order to obtain the total energy of atom with absolut accuracy of 1E-6 hartree.

The program Orthos is developed to performed simulation (including nonlinear least-squares fitting) of EPR spectra of nitroxide biradicals. The program capabilities include simulation of rigid-limit and slow-motional spectra, of both isotropic and aligned samples. The spectra of multiple paramagnetic species, both bi- and monoradicals can be modeled. NB: Please note that now (as of Nov 2016) the distribution is being updated so that to improve reliability, OS-universality, and the quality of documentation. ...

SAC (Symbolic Analysis and Control) is a toolbox for people working in control theory. It will help to the analysis and synthesis of nonlinear systems described by state equations (with or without delays).

The repository has been moved to: https://github.com/wojdyr/fityk. Fityk is nonlinear curve-fitting and data analysis software. It is specialized in fitting peaks (bell-shaped functions like Gaussian, Loretzian, Pearson7, Voigt) to experimental data.

HRS Computing is a scientific software that simulates the Hyper Rayleigh Scattering (HRS), which is a nonlinear optics phenomenon.

LaserFoam performs simulations of laser pulses using an adaptive split step Fourier method to solve the generalized nonlinear Schrödinger equation. It provides a graphical environment to run and visualize the results.

NLO helps studying the nonlinear optical effects of crystals. It offers a GUI to plot the theoret. expected "maker fringes", captures images from video, retrieves data from and sends data to a LockIn, controls a stepping motor, imports and plots datase

FSEM is a set of freeFEM++ scripts and C++ code to solve the drift-diffusion (DD) semiconductor device equations by the finite element method (FEM). It was initially developed for the nonlinear study of semiconductors under high optical injection.

Diagram (JGraph) driven simulator. Bondgraphs > nonlinear differantial system > plot: implemented for economics and ecology. Network analysis: emergy propagation implemented. Would also fit for electronics, mechanics, cost, GWP, footprint analysis.