Search Results for "b-tree"
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Showing 37 open source projects for "b-tree"
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42
Simulation for spacecraft attitude control system analysis and design
42 is a comprehensive general-purpose simulation of spacecraft attitude and orbit dynamics. Its primary purpose is to support design and validation of attitude control systems, from concept studies through integration and test. 42 accurately models multi-body spacecraft attitude dynamics (with rigid and/or flexible bodies), and both two-body and three-body orbital flight regimes, modelling environments from low Earth orbit to throughout the solar system. 42 simulates multiple spacecraft... -
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MOSSCO
Modular System for Shelves and Coasts
...Quick Start: git clone git://git.code.sf.net/p/mossco/setups mossco-setups git clone git://git.code.sf.net/p/mossco/code mossco-code cd mossco-code cat QuickStart.md or read online https://sf.net/p/mossco/code/ci/master/tree/QuickStart.md Beware: this is alpha software, expect trouble! ------------------------- Better, read the full documentation online http://www.mossco.de/doc or make it yourself make doc acroread doc/mossco_documentation.pdf ---------------------- Why MOSSCO? MOSSCO, the "Modular System for Shelves and Coasts" is a framework for coupling processes or domains that are originally developed in standalone numerical models. ... -
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DeepSee
Visualize deep ocean biogeochemical sediment samples in 2D and 3D!
...🦑🦀🐚 🚀 For a live demo, visit: https://www.its.caltech.edu/~datavis/deepsee/ 🌱 To get started, visit our Wiki: https://sourceforge.net/p/deepsee/wiki/Home/ 🧑💻 To modify DeepSee for your own project, visit our GitHub repository: https://github.com/orphanlab/DeepSee/ --- Created by Adam Coscia, Haley M. Sapers, Noah Deutsch, Malika Khurana, John S. Magyar, Sergio A. Parra, Daniel R. Utter, Rebecca L. Wipfler, David W. Caress, Eric J. Martin, Jennifer B. Paduan, Maggie Hendrie, Santiago Lombeyda, Hillary Mushkin, Alex Endert, Scott Davidoff, and Victoria J. Orphan. Copyright (c) 2022-23 California Institute of Technology ("Caltech"). U.S. Government sponsorship acknowledged. All rights reserved. Open Source License Approved by Caltech/JPL APACHE LICENSE, VERSION 2.0 --- -
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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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Quadtree Demo
Demonstrates a quadtree for spatial indexing of triangles
...Depending on a search point all triangles of a quadtree's region are retrieved and relevant information about the search is shown. Quadtree creation can be parametrized by three parameters: - Maximum tree depth. - Maximum number of triangles per region. - Percentage of total number of triangles per region. The OpenGL graphics library is used to render the results, regions as well as the underlying triangle mesh. Navigation (e.g. zooming, moving) is available by keyboard and mouse. Example meshes are provided in wavefront *.obj format and can be opened from inside the program. -
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Crystalsim - XRD hkl simulation
X-ray diffraction (XRD) analysis for hkl simulation of any crystal.
...Analyze both powder diffraction and single crystal data . Indexed at International Union of Crystallography (IUCR). Crystalline lattice parameters such as ‘a’, ‘b’, ‘c’ as well as interfacial angles such as alpha, beta, gamma can also be entered manually. Processed data can be saved as .csv file format. Designed by M Kanagasabapathy, Assistant Professor, Department of Chemistry, Rajus' College, Affiliated to Madurai Kamaraj University Rajapalayam (TN) India email: rrcmks(at)gmail.com -
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dupost
Dual Porosity Stokes model implemented with FEniCS
A coupled dual porosity Stokes model implemented with FEniCS. References: 1. C. Douglas, X. Hu, B. Bai, X. He, M. Wei and J. Hou, "A Data Assimilation Enabled Model for Coupling Dual Porosity Flow with Free Flow," 2018 17th International Symposium on Distributed Computing and Applications for Business Engineering and Science (DCABES), Wuxi, 2018, pp. 304-307. doi: 10.1109/DCABES.2018.00085 2. Hu X., Douglas C.C. (2019) An Implementation of a Coupled Dual-Porosity-Stokes Model with FEniCS. ... -
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This is a standalone program for a) the calculation of diffusion coefficients of sorbates inside nanoporous materials at different loadings by using transition rate constants and for b) solving the master equation for a system consisted of a large number of unit cells per each direction. It is based on the following published paper "Kolokathis, P. D., Braun, O. M.. J. Comput. Chem. 2019, 40, 2053– 2066. DOI: 10.1002/jcc.25857"
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As of August 2018 Spheral++ has moved to Github -- please see the current repository at https://github.com/jmikeowen/spheral We are leaving a frozen version here on SourceForge for historical reasons. Spheral++ provides a steerable parallel environment for performing coupled hydrodynamical & gravitational numerical simulations. Hydrodynamics and gravity are modelled using particle based methods (SPH and N-Body).
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Penthode
Penthode simulates, draw and plot electrical power distributions
Given a simple net-list describing the high level power architecture of your system Penthode: - simulates the voltage and current from device turn on to the steady state. - highlights components working out of specification - draws a nice power tree diagram showing the currents/powers balance - plots node transient voltage and gate current waveforms It is possible to change component parameters interactively to improve the design -
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OpenRTDynamics
A framework for implementing real-time control systems
- - - T H I S P R O J E C T M O V E D T O G I T H U B - - - A framework for the implementation of advanced real-time control systems which uses signal/block-based schematics (like Simulink) extended by several features like state machines and online-exchangeable sub-simulations. Besides, this framework properly handles multiple threads, their communication, allows to synchronise control systems to external events (e.g. variable timers or incoming network packages) and provides many other nice features. ... -
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RSchr-5
Solves one-electron Schrödinger equation, with SLEPc and PETSc
...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 Krylov-Schur algorithm from SLEPc library. The program is implemented in C++. The implementation is based on Message Passing Interface (MPI). -
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PDBManip
PDBManip is a free program for editing PDB (Protein Data Bank) Files
PDBManip is a free program for editing and manipulating PDB (Protein Data Bank) files. It has a graphical user interface and it is provided as an executable file for running on Windows® operating systems. There is a bunch of free programs on the internet for the same purpose. What discriminate between PDBManip and those programs is that PDBManip uses AngelScript language which is very similar to C/C++ language, to write scripts to do our editing tasks. I know that the text-manipulation... -
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FAST Simulations
An Open source Analysis and SImulation Toolbox for Fuel Cells
FAST is an Analysis and Simulation Toolbox (FAST) for Fuel Cells (FC) FAST-FC is the doctorate work of David B. Harvey and was developed with support from the U.S. DOE, Ballard, and Queen's University. Derivative works of FAST-FC include FC-APOLLO which is a forked branch of this project intended to capture the code state at the exit of the funded DOE project. FAST-FC is the open and active community branch. FAST-FC is developed and maintained by the original creator and developer, David B. ... -
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Pixel Empires
A cellular automation simulation governed by probability.
...In the next iteration, the new cells follow the same process. Second, every color is predestined to consume another color if the two make contact. In other words, if Color A consumes Color B, whenever Color A's cells randomly select Color B's cells, that selected cell will be converted to Color A. Third, if the population of a color is below a certain threshold number, this color will randomly choose another color to consume (this chosen color may even be a color that no longer exists on the grid). -
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QSapecNG is a Qt-based symbolic analysis program for linear analog circuits. In fact, it consists of two indipendently parts: the SapecNG framework engine, and the application gui QSapecNG.
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**(9 march 2016) this project is continued on github : http://jaapkroe.github.io/polypy ** Python script to analyze (shortest-path) rings in structures read from xyz-files. It can be useful for example to identify defects in crystal structures or molecules.
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BlueSky Open Air Traffic Simulator
BlueSky Open Air Traffic sim, (Windows/Linux/Mac, Python 2.x based)
...It includes only open, license free data for navigation and aircraft performance but is also compatible with BADA 3. Can be used for ATC research or any other aviation or air transport related simulation studies. Is also able to visualize ADS-B traffic. BlueSky commands, and thus the scenario files, are compatible with the TMX simulator in use by NLR and NASA. BlueSky is originally developed, and still moderated, by prof. Jacco M. Hoekstra and staff and students of the TU Delft. More documentation can be found at the website and inside the doc folder. -
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igafem
Open source 3D Matlab Isogeometric Analysis Code
Isogeometric analysis (IGA) is a fundamental step forward in computational mechanics that offers the possibility of integrating methods for analysis into Computer Aided Design (CAD) tools and vice versa. The benefits of such an approach are evident, since the time taken from design to analysis is greatly reduced leading to large savings in cost and time for industry. The tight coupling of CAD and analysis within IGA requires knowledge from both fields and it is one of the goals of the... -
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Biogenesis X Mod
Mod of the evolution simulation and artificial life program Biogenesis
...Compared to the original project, this modification explores the following features: * alternative mutation mechanisms * an alternative stress-based aging mechanism It is based on the new_design branch of Biogenesis (https://sourceforge.net/p/biogenesis/git/ci/new_design/tree/), its source code can be obatained from http://sourceforge.net/p/biogenesisxmod/code/ci/xmod/tree/ If you want to post a review, remember that this is only a modification, so comment on my changes, not on the simulation. Biogenesis discussion forum: https://sourceforge.net/p/biogenesis/discussion/ -
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This is a Verilog/AMS 1.3 Parser Frontend. Input files are preprocessed and parsed, internally stored in a VPI-object-tree representation. No elaboration or synthesis is performed.
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A functional-structural model of tree growth based on carbon partitioning among individual organs that compete for resources.
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Rand Tree
Random Tree Generator for MatLab
RandTree is a MatLab based tree simulator program where the algorithm is based on Honda's model. We have used probabilistic generation of branches in order to simulate visually realistic tree structures. This program is designed to generate branching structures with bifurcation branching pattern (sympodial branching). By changing the probabilities and branching angles, you can generate different shapes of trees. -
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Pamvotis is a Wireless LAN Simulator for all the current physical layer extentions of the IEEE 802.11 (IEEE 802.11 a/b/g) standard and for the IEEE 802.11e Draft for Quality of Service in WLANs.
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General purpose discrete event simulation (DES) framework for the Python programming language. Khronos gathers ideas from other simulation software and tries to provide a simple and poweful toolset for simulation of discrete systems.
