Search Results for "equation" - Page 3
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Showing 227 open source projects for "equation"
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ADE_3D_FEM
A 3D ADE FEM solver including a manual and a basic preprocessor
A 3D Advection-Diffusion Equation Finite Element Method solver including a user's manual and a basic pre-proccessor. -
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CompPad is a LibreOffice extension that provides live mathematical and engineering calculations within a Writer document. It is intended to provide a free / open-source alternative to Mathcad .
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DiPoly
Diffraction analysis of Polymers
DiPoly is a new software that implements basic diffraction methods for the structural characterization of biopolymers. It is freeware with a friendly interface for the analysis of experimental powder X-ray diffractograms of polymer samples of biomass of various origins. A complex approach approach based on a combination of the Segal, decomposition and LeBale methods is used to estimate the degree of crystallinity. The Scherrer equation is used to determine the sizes of coherent scattering... -
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Hex
Hydrogen-Electron Collisions
A computer code for simulation of electron-hydrogen scattering. Contains three (more or less) finished sub-programs: (a) “hex-ecs” which solves the Schrödinger equation in the B-spline basis, (b) “hex-dwba” which computes scattering variables for high energies using the distorted wave Born approximation of the first order and finally (c) “hex-db” which is a user interface to a plain SQLite database, where the intermediate results are being stored, and which is used to extract derived... -
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WRF_ELEC
Storm electrification package for the WRF-ARW
NOTE: For WRF-ELEC with version 4.5.1, go to https://github.com/MicroTed/wrf4-elec This (older) project provides the external files need to compile electrification into the Weather Research and Forecasting (WRF) model (version 3.9.1.1 currently). It contains modules for the lightning discharge scheme, the screening layer parameterization, communications, and include code that calls these subroutines. Note that the required elliptic equation solver is a separate download from <http... -
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PROJECT DEVELOPEMENT IS MOVING TO GITHUB! New website: https://anharmonic.github.io/ Please get the latest version of the code from github repository: https://github.com/paulatz/d3q
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HPhysics Calcuator
HPhysis is physics calculator to sloved physics problems
With HPhysics we can sloved physics problems in. HPhysics version = number of equations in py file (0.95 mean 95 equation). -
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Python/FEniCS Examples
phase-field simulation and other examples with Python/FEniCS
The main goal of this project was developing phase-field simulations of lithium dendrite growth with FEniCS programmed in Python. The problem was based in the grand potential-based model of Zijian Hong and Venkatasubramanian Viswanathan (https://doi.org/10.1021/acsenergylett.8b01009) . Some simpler examples were developed before for a first approach with FEniCS: heat equation and combustion model. -
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Qibla and Jerusalem Direction
Qibla and Jerusalem by Vencinty
A project that serves Muslim, Christian and Jewish worshipers. To calculate the distance and direction between (kabba) in Makkah Al-Mukarramah and any point on the earth's surface, using Vincenti's equation. And calculate the distance and direction between Jerusalem and any point on the earth's surface. -
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C++QED
A framework for simulating open quantum dynamics
C++QED is an application-programming framework for simulating open quantum dynamics in general. It has demonstrated the ability to simulate full Master equation of up to several thousand, and quantum trajectories of up to several hundred thousand dimensions. The basic idea is to allow users to build arbitrarily complex interacting quantum systems out of free subsystems and interactions (elements), and simulate their time evolution with a number of available time-evolution drivers. C... -
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Haversine
distance between two points on a sphere (used for the Earth surface)
A fórmula de Haversine é uma equação usada em navegação. Ela fornece a distância entre dois pontos na superfície de uma esfera a partir de suas latitudes e longitudes. ................................................................................................................ The Haversine formula is an equation used for navigation. It gives the distance between two points on a sphere given the latitude and longitude of them. Open Source in Lazarus/Free Pascal. -
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HBV interventions model
ODE HBV model and MCMC for fitting HBsAg, HBcAg and HBeAg data.
This code implements the MCMC and ordinary differential equation (ODE) model described in [1]. The core MCMC and ODE code is implemented in C/C++, and is wrapped with an R front end. This is not an R-package (although there are plans to extend the code and eventually make it into an R-package). Please read the PDF file supplied for further instructions on how to use this code. [1] HBV vaccination and PMTCT as elimination tools in the presence of HIV: insights from a clinical cohort... -
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Virtual Laboratory Environment
A multi-modeling and simulation environment to study complex systems
... mathematical formalism: Ordinary Differential Equation with Euler, Range-Kutta or QSS integrator, Finite state automaton (FDDEVS, UML State chart, Hybrid Petri net). The VLE environment provides an IDE to develop C++ models, DEVS coupled models. VLE have also three ports to use the VFL with Python, Java and R programming languages. -
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MPI 3D Heat equation
MPI Numerical Solving of the 3D Heat equation
This scientific code solves the 3D Heat equation with MPI (Message Passing Interface) implementation. There are Fortran 90 and C versions. A benchmark analysis is also preformed with the relation between speedup and number of processes. -
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ffp
A 3D Free Finite element Program
A 3D Free Finite element Program. Still under development but already working: solves the steady state Navier-Lamé and the Laplace equation in 3D on tetrahedrons. It uses the Intel MKL and NVIDIA CUDA library for solving. GSL support needs to be improved. Open CL is still missing. In addition to the numerical core (which can be used stand-alone), another project called mcf exists for using ffp as a FEFLOW plug-in. -
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Win-Brash
A Windows Native Bourne Shell Interpreter
Win-Brash is a recoding, from scratch, of the Bourne shell as a native Microsoft Windows multi-threaded command line application. It uses Bourne shell syntax but recognizes Windows file names. The TAB key helps convert Unix style pathnames to fully valid windows pathnames. It also adds missing backslashes -- to reduce the need to always type two. For Documentation see: http://www.bordoon.com/brash To give brash.exe a try, use the download link to get winbrash-1.2.16.zip. Unzip... -
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BioNet-Finder
Network-based modeling and analysis for complex biological data
..., genomic complexity, latent effects on the observed system, and output ranking. This is carried out applying network analysis methods from different fields, such as Structural Equation Modeling (SEM), together with data reduction algorithms (e.g., random walkers, spectral analysis, shortest path-based or topology-based algorithms). The BioNet-Finder project is at its initial steps, and it will continuously update with new methods and code. -
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Nonlinear Schrödinger equation (NSE) is a fundamental equation in nonlinear optics that describes the propagation of a pulse through a dispersive and nonlinear medium. Nonlinear Pulse Propagation Solver (NPP) is a program, written in C/C++, that solves NSE in an arbitrary waveguide. It has a user friendly interface, which allows a user to enter the pulse and waveguide parameters and execute simulations. The program can be invoked within MATLAB and any other scripting language. It can export...
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Construct2D
COmputational fluid dyNamics STRUctured grid CreaTor for 2D airfoils
Construct2D is a grid generator designed to create 2D grids for CFD computations on airfoils. The grids are generated in Plot3D format. The only required input file is the set of coordinates defining the airfoil geometry, using the same format as XFoil, the popular vortex-panel code for airfoil analysis. Construct2D can create grids with O topology (recommended for airfoils with a blunt trailing edge) or C topology (recommended for airfoils with a sharp trailing edge). Now available in... -
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SODE
Program to solve differential equations using long Taylor series
Program to generate a program to numerically solve either a single ordinary differential equation or a system of them.It is a Ruby program, now called omnisode, which generates either Ruby, C, C++, Maple or Maxima code. Code can be generated for all languages under Linux. Ruby can be generated under Windows. All can be generated under cygwin, but would need work on execution of Maple. Omnisode itself is Ruby, which is needed in all cases to generate the program. -
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ZeGrapher
Fast and easy to use plotting software.
ZeGrapher is a free and open source software for plotting mathematical objects (functions, sequences, parametric equations) and experimental data on the plane. This software is intended to be as easy to use as possible, suitable for high school students. -
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AcouSTO (Acoustic Simulation TOol) is a low-order BEM code to solve the Kirchhoff Integral Equation. An arbitrary number of scattering/radiating bodies, monopoles, and plane waves is allowed. Runs in parallel on MPI2-equipped clusters.
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QuantumQuaternionCrypto
To develop Qubit-resistant cryptography based on 4D-hypercomplexity...
...requiring the Quaternion (or even 8D-Biquaternion?) number system as a basis of Asymmetric Public-Private Key Digital Encryption to befuddle and overwhelm the highly-anticipated, powerful but fragile technology of Quantum Computation. Major recent Asian analytical advances are budding out in Singapore and India, whose foundations may well be provide a practical, efficient coding approach (adapting beautifully to the visualization and equation facilities of Wolfram/Mathematica) to Strong... -
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RAtom
solves nonlinear Kohn-Sham equation for the neutral atom.
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. Disctretization leads to generalized eigenvalue problem, which is solved by procedures from... -
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RSchr-5
Solves one-electron Schrödinger equation, with SLEPc and PETSc
RSchr-5 calculates the smallest eigenvalues of the one-electron Schrödinger equation. The solved problem is defined on the finite domain, which is a box. The problem is solved with the zero Dirichlet boundary conditions. The implemented algorithm uses Finite Element Method with B-splines as basis functions. Disctretization leads to generalized eigenvalue problem. Program RSchr-5 solves the generalized eigenvalue problem by algorithms implemented in SLEPc amd PETSc libraries. It uses...