Freeware Listing: Poisson

C-Library & Matlab Toolbox implement a numerical solution of Poisson equation div(e*grad(u))=f for 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 conditions, FVM-based equation discretization and iterative methods for solving sparse linear system. MATLAB VERSION: 6.5 - 7.9 FILES: C-LIBRARY: COMMON.C, COMMON.H - data types, memory management LINALG.C, LINALG.H - solution of tridiagonal system PSN_1D.C, PSN_1D.H - 1D Poisson solver PSN_2D.C, PSN_2D.H - 2D and Cylindrical Poisson solver MATLAB TOOLBOX: PSN_1D_MEX.

  • Platform: Matlab, Scripts

PoissonMax is a handy, small, command prompt based application specially designed to compute Poisson maximum likelihood mean frequency from limiting dilution data, with 95% confidence limits and Chi-square value..

  • Platform: WinOther

C-Library & Matlab Toolbox implement a numerical solution of Poisson equation div(e*grad(u))=f in 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 iterative methods for solving sparse linear system. The solver can accommodate the severe jumps in dielectric permittivity typical of ion channels (d?TA=80 and d?TA=2 respectively for water and protein) and includes a Poisson-Boltzmann (PB) extension providing a solution of the linearized PB equation. The solver has been designed to calculate forces and potentials for single/multiple charges in model ion channel model with different parameters MATLAB VERSION: 6.

  • Platform: Matlab, Scripts

program which solves the poisson problem using multigrid and finite elements
Universal Multigrid Poisson Solver License - GNU General Public License (GPL).

  • Platform: WinOther
  • APBS
  • License: Freeware
  • Rating

APBS was designed as a software package for modeling biomolecular solvation through solution of the Poisson-Boltzmann equation or PBE.

PBE is one of the most popular continuum models for describing electrostatic interactions between molecular solutes in salty, aqueous media.

Continuum electrostatics plays an important role in several areas of biomolecular simulation, including:
· simulation of diffusional processes to determine ligand-protein and protein-protein binding kinetics,
· implicit solvent molecular dynamics of biomolecules,
· solvation and binding energy calculations to determine ligand-protein and protein-protein equilibrium binding constants and aid in rational drug design,
· and biomolecular titration studies.

  • Platform: WinOther

APBSmem is a handy, Java-based graphical user interface specially designed to help you with Poisson-Boltzmann electrostatics calculations at the membrane.

The Poisson-Boltzmann equation or PB describes the electrostatic environment of a solute in a solvent containing ions.


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  • Platform: WinOther

This aims to supply a Borland Delphi translation of Alan Miller's Random Module for FORTRAN-90. This translation has been done with Dr Miller's approval and is being made FREELY available to all Delphi Developers, though we do ask the Alan Miller and ESB Consultancy be given due credit. It includes the following Random Number Generators: - Normal (Gaussian) - Gamma - Chi-squared - Exponential - Weibull - Beta - t - Multivariate Normal - Generalized inverse Gaussian - Binomial (2 different ones) - Negative Binomial - von Mises - Cauchy Includes full Delphi Source and Demo..

  • Platform: Win2000, Windows Server, WinOther

An analytical generalized Born model to calculate electrostatic solvation energy that accurately reproduces the linearized Poisson-Boltzmann equation. More about this method is explained in J. Phys. Chem. B, 111, 3055-3061 (2007)..

  • Platform: Linux, Unix

An automatic 2D Delaunay mesh generator and solver for Finite Element Analysis. Can solve 2D field problems (Poisson and Helmholtz Equations). Can use LAPACK/ARPACK solvers producing OpenGL/Postscript output. Uses C/GTK/GTKGLExt/MFC. Runs on Win32/Unix..

  • Platform: Linux, Unix, WinOther

Plots Binomial and Poisson distributions based on different values of p and n to visually express, how much those distributions are "close".

  • Platform: WinOther

SAS macros and sample code for stratifying (and aggregating) data according to time-varying covariates. Especially useful for Poisson regression, Cox regression and calculating standardised incidence ratios..

  • Platform: Linux, Mac OS X, WinOther

TCL Geolog Xplots of VP,VS,IP,IS,VS diveded by VP, POISSON'S RATIO, MU*RHO, LAMBDA*RHOLAMBDA/RHO, SHEAR MODULUS, YOUNGS MODULUS and BULK MODULUSand COMPRESSIBILITY logs given only three inputs1) DT sonic log2) DTS shear sonic log3) RHOB densit.

  • Platform: Linux, Unix

AQUILA is a MATLAB toolbox for the one- or two dimensional simulation of the electronic properties of GaAs/AlGaAs semiconductor nanostructures. The program solves for a user-defined structure the one- or twodimensional Schroedinger- and Poisson-Equation in a self-consistent way..

  • Platform: Matlab, Scripts

Program calculates eigenvalues, modal parameters and normalization constants for a thin circular plate with elastic edge supports. Both translational and rotational constraints are considered. User can modify the constraints and vary Poisson ratio..

  • Platform: Matlab, Scripts

Implementation of circular 1D tracker modeled after description in: @ARTICLE{Isard98condensation , author = {Michael Isard and Andrew Blake}, title = {CONDENSATION Conditional Density Propagation for Visual Tracking}, journal = {International Journal of Computer Vision}, year = {1998}, volume = {29}, pages = {5--28} } ---- Dynamic model is autoregressive 1 (AR1) and noise model is Poisson..

  • Platform: Matlab, Scripts

test *only* 1) nr3, Poisson distribution 2) mixture model
testran License - MIT License.

  • Platform: WinOther

An analytical generalized Born model to calculate electrostatic solvation energy that accurately reproduces the linearized Poisson-Boltzmann equation. More about this method is explained in J. Phys. Chem. B, 111, 3055-3061 (2007).
GBr6 generalized Born License - GNU General Public License (GPL).

  • Publisher: Gbr6
  • Date:
  • Size: 70 KB
  • Platform: Linux, Unix

SphereSim is a handy application that can simulate particles movement, depending on the gravity force and other parameters, such as the air resistance, Poisson's ratio and elasticity.

SphereSim generates a graph representing the wall force evolution. Users can modify the forces, customize the rendering options (FPS, trace length etc.), the temperature, speed and more. The application calculates different indicators, such as the Brownian motion.


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  • Platform: Windows 7, Windows 8, WinOther, WinVista

PAMELA, which is also known as Pseudospectral Analysis Method with Exchange & Local Approximations is developed as a handy MATLAB package.

PAMELA is a self-contained code suite that can be used to calculate electronic energies, wavefunctions, densities, and band-bending diagrams. All the calculations are done within a self-consistent Schrödinger-Poisson formalism.


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  • Platform: WinOther

Ion Beam Simulator or IBSimu is an ion optical computer simulation package for ion optics, plasma extraction and space charge dominated ion beam transport using Vlasov iteration. The code has several capabilities for solving electric fields in a defined geometry and tracking particles in electric and magnetic fields. The code is a constructed as a C++ library for maximal versatility and openness.

features:

Solid geometry definition using DXF files, mathematical formulation, etc.
Finite Difference Method solver for 1D, 2D and 3D Poisson equations with edge smoothing.

  • Platform: WinOther

Poisson: Freeware | All

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