Showing 75 open source projects for "nonlinear"

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  • 1
    JuMP

    JuMP

    Modeling language for Mathematical Optimization

    ...JuMP makes it easy to formulate and solve a range of problem classes, including linear programs, integer programs, conic programs, semidefinite programs, and constrained nonlinear programs. JuMP is used to solve large-scale inventory routing problems at Renault, schedule trains at Thales Inc., plan power grid expansion at PSR, and route school buses.
    Downloads: 6 This Week
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  • 2
    SimulAdren

    SimulAdren

    A simulation program for the HPA axis.

    SimulAdren is a simulation program for the hypothalamus-pituitary-adrenal axis (HPA feedback control). It is based on a nonlinear MiMe-NoCoDI model and uses the CyberUnits Bricks class library.
    Downloads: 7 This Week
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  • 3
    Octave Forge

    Octave Forge

    A collection of packages providing extra functionality for GNU Octave

    ...GNU Octave is a high-level interpreted language, primarily intended for numerical computations. It provides capabilities for the numerical solution of linear and nonlinear problems, and for performing other numerical experiments. It also provides extensive graphics capabilities for data visualization and manipulation. Octave is normally used through its interactive command line interface, but it can also be used to write non-interactive programs. The Octave language is quite similar to Matlab so that most programs are easily portable. ...
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    Downloads: 802 This Week
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  • 4

    GAMIso

    Nonlinear least squares fitting of sorption isotherms

    Downloads: 0 This Week
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  • 5
    bars3d

    bars3d

    linear and nonlinear static analysis of 3-dimensional frames

    Sour*eforge.net has become inaccesible to me because of Cl*udflare. The latest versions of the programs will be on my site: https://matei.one/. Linear and nonlinear (from version 2.0.0) finite element analysis of 3-dimensional frames, trusses and other such structures, designed for use in civil engineering. SDL 1.2 or 2 can be used for graphics and an executable file for Window$ is included in version 2.1.0, as well as a program for analysing 2-dimensional structures, written in Sinclair BASIC for ZX Spectrum computers. ...
    Downloads: 3 This Week
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  • 6

    LMath library

    Math library for Free Pascal and Lazarus.

    ...It is entirely written in Pascal and does not depend on external libraries. LMath provides routines and demo programs for numerical analysis, including mathematical functions, probabilities, matrices, optimization, linear and nonlinear equations, integration, Fast Fourier Transform, random numbers, curve fitting, statistics and graphics. It is organized s set of lazarus packages which makes it easily extensible and helps to include only really needed features in your project.
    Downloads: 5 This Week
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  • 7
    SimulaBeta

    SimulaBeta

    A simulation program for insulin-glucose homeostasis.

    SimulaBeta is a simulation program for insulin-glucose feedback control. It is based on a nonlinear MiMe-NoCoDI model.
    Downloads: 13 This Week
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  • 8

    GRAMPC

    A gradient-based augmented Lagrangian framework for embedded NMPC

    GRAMPC is a nonlinear MPC framework that is suitable for dynamical systems with sampling times in the (sub)millisecond range and that allows for an efficient implementation on embedded hardware. The algorithm is based on an augmented Lagrangian formulation with a tailored gradient method for the inner minimization problem. GRAMPC is implemented in plain C with an additional interface to C++ and MATLAB/Simulink.
    Downloads: 0 This Week
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  • 9
    Eleana

    Eleana

    Program for the analysis of spectroscopic data, in particular EPR(ESR)

    ...Some of the basic functions include: baseline corrections, filtering, spectral clipping, integration / differentiation, pseudomodulation, filtering, etc. More advanced functions are: Forward / Inverse Fourier Transforms, Hilbert Transforms, Nonlinear Curve Fit, Global Analysis Fit of Multiple Curves, and many other. It is also possible to create your own plugins extending Eleana's functionality.
    Downloads: 4 This Week
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  • 10
    NAVAL-SEM

    NAVAL-SEM

    Free offline SEM software with HTMT, bootstrapping & exports

    NAVAL-SEM is a free, open-source, fully offline desktop application for Structural Equation Modeling (SEM), supporting both PLS-SEM and CB-SEM workflows. Designed for researchers, PhD scholars, professors, students, and analysts, it enables advanced quantitative research without subscriptions, cloud dependencies, or proprietary software restrictions. Key features include visual drag-and-drop model building, bootstrapping, mediation analysis, HTMT, AVE, Composite Reliability (CR),...
    Downloads: 31 This Week
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  • 11
    basic_numerical_methods

    basic_numerical_methods

    Didactic application to aid students in learning Numerical Methods;

    A practical tool (for students and engineers) to foresee the result of calculus exercises. Calculation and visualization numerical methods for nonlinear equation, ODE, integration, linear system, polynomial fitting,.....
    Downloads: 1 This Week
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  • 12

    Ship, Tow-Tether and Moonpool Models

    Linked Excel workbooks for preliminary study of the title systems

    ...FD and TD at the end of a file name denotes frequency domain and time domain solutions, respectively. Except for the moonpool TD model, which is a solution to the nonlinear equations of motion for the moonpool piston mode, TD solutions are obtained by superposing FD solutions in uniform random phase. Toolbars on the plot tabs can be activated to expose plot options. Model input parameters are defined in comments to the input cells of each workbook. (Use the TAB key to move between input cell.) ...
    Downloads: 0 This Week
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  • 13
    Ultrashort Pulse Propagator

    Ultrashort Pulse Propagator

    A powerful simulation for designing femtosecond lasers and amplifiers.

    ...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. ...
    Downloads: 3 This Week
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  • 14
    Lipid Reporter

    Lipid Reporter

    Modifies csv files with a range of user defined filters.

    ...The supplied filters are all about Lipids. Add the category names, reject Ids that our outside of your favourite retention time range and lots more! This program is not produced by Nonlinear Dynamics and is not supported by Nonlinear Dynamics . Put all support questions through the Tickets and Discussion pages. Happy reporting.
    Downloads: 1 This Week
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  • 15
    CalculiXforWin

    CalculiXforWin

    Open-Source Multiphysics FEA (FEM) Package

    ...CalculiX is most popular FEA open-source package (like Code-Aster and Elmer-FEM). it is comparable in features with most known commercial packages like ANSYS, NASTRAN, Abaqus, etc. Good for structural, mechanical, thermal and fluid applications (trusses, plates, frames, shells, solid bodies). It has powerful nonlinear capabilities (including tension/compression only material like concrete) and most types of analysis (modal, thermal, buckling, coupled, etc) . See home page at http://www.dhondt.de New versions can be obtauned here: http://calculixforwin.blogspot.com/2015/05/calculix-launcher.html PS Appimages for Scilab, wxMaxima and GNU Octave were added
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    Downloads: 76 This Week
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  • 16
    NLIGA

    NLIGA

    Open source Matlab code for nonlinear isogeometric analysis

    A unified framework, NLIGA (Non-Linear Isogeometric Analysis), is developed for mainly solving two and three-dimensional nonlinear problems on the MATLAB platform by using isogeometric analysis (IGA). Nonlinear hyperelastic and elastoplastic materials are primarily considered at this stage. Newton-Raphson method is used to solve the nonlinear governing equations. A series of benchmark examples are performed to validate the procedures. The visualization procedures are also developed to visualize the obtained results including displacements, stresses and numerical errors. ...
    Downloads: 5 This Week
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  • 17
    Algorithms Math Models

    Algorithms Math Models

    MATLAB implementations of algorithms

    Algorithms_MathModels is a large MATLAB collection of algorithms and solved examples targeted at students and teams preparing for mathematical modeling competitions (national and international contests like MCM/ICM). The repository gathers implementations and case studies across many topics commonly used in contest solutions: optimization (linear, integer, goal and nonlinear programming), heuristic and metaheuristic methods (simulated annealing, genetic algorithms, immune algorithms), neural networks and time-series methods, interpolation and regression, graph theory, cellular automata, grey systems, fuzzy models, partial/ordinary differential equations, and multivariate analysis, among others. The codebase is organized into topic folders (e.g., HeuristicAlgorithm, IntegerProgramming, NeuralNetwork, TimeSeries) and includes dozens of worked examples and links to textbook/source materials that the author used to assemble the collection.
    Downloads: 0 This Week
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  • 18
    AlphaPlot

    AlphaPlot

    Interactive scientific graphing and data analysis software.

    Alpha Plot can generate different types of 2D and 3D plots (such as line, scatter, bar, pie, and surface plots) from data that is either imported from ASCII files, entered by hand, or calculated using formulas. The data is held in spreadsheets which are referred to as tables with column-based data (typically X and Y values for 2D plots) or matrices (for 3D plots). The spreadsheets as well as graphs and note windows are gathered in a project and can be organized using folders. The built-in...
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    Downloads: 41 This Week
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  • 19
    BSW_MATH
    This project uses PHP Code to programing mathematics and theoritical physics it begins with finding the roots of nonlinear equation and Lagrange interpolation we will develop it step by step you can also download it from http://bsw.benhascience.com
    Downloads: 0 This Week
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  • 20
    QtiPlot
    QtiPlot is a user-friendly, platform independent data analysis and visualization application similar to the non-free Windows program Origin.
    Downloads: 23 This Week
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  • 21
    AdaAutoDiff

    AdaAutoDiff

    C++ Templates and Ada Package for Automatic Differentiation

    Operators are overloaded so that a normal looking function definition provides access to not only evaluations of itself, but to evaluations of any of its analytic derivatives. Automatic differentiation means the user does not need to define the analytic expressions for all the various partial derivatives. It also means that those complex expressions are essentially calculated at compile time, and merely evaluated at runtime. First order derivatives only, forward...
    Downloads: 0 This Week
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  • 22
    NOMAD is a C++ code that implements the MADS algorithm (Mesh Adaptive Direct Search) for difficult blackbox optimization problems. Such problems occur when the functions to optimize are costly computer simulations with no derivatives.
    Downloads: 0 This Week
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  • 23

    SLAM++

    high-performance nonlinear least squares solver for graph problems

    SLAM++ is a minimalist implementation of incremental nonlinear least squares, containing lighting fast implementation of linear algebra on sparse block matrices. It is aimed for use in 3D reconstruction or robotics.
    Downloads: 1 This Week
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  • 24
    Designed to help you with nonlinear, multidimensional, multi-parameter regression, using the Levenberg-Marquardt algorithm. The regression model can be set up using the input syntax of most modern cas. Full featured visualization and data edit mask. Regression Easy needs help. Especially need to catch exceptions and give reasonable error messages. (In the moment, the standard error handler is invoked.
    Downloads: 1 This Week
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  • 25
    Nifty Sim
    Nifty Sim is a high-performance nonlinear finite element solver, developed at University College London. A key feature is the option of GPU-based execution, which allows the solver to significantly out-perform equivalent commercial packages.
    Downloads: 0 This Week
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