Open Source Physics Software - Page 32

Optimisation with conjugate gradients

We present the package Optimizer, aimed at constructing and optimizing general mathematical models of phenomena of versatile nature. It is written in the Matlab algorithmic language and is executed in the Matlab environment with partial functionality in Octave. The convenient visual interface and the detailed manuals are provided. The main benefit of the package is its capability to construct models of any level of complexity in a block-by-block manner. Elementary model blocks can be collected in libraries, and we have already written many such library programs. Many of these programs are already available along with the main package. Currently, the main focus of these is computational quantum mechanics, analysis and simulation of molecular spectra, and general-purpose approximants. The package provides the most reliable modern strategies for linear and non-linear model optimization, regularization, and hypothesis tests. Parallel computing is supported.

Orbit is currently a simple orbital simulator for simple circular orbits. It ultimately aims to be a general gravity machine, which will allow the instant creation of galaxies.

Oree - Optimum Real-time Estimation of Events of Interaction: real-time reconstruction of photon interaction events in Gamma Cameras. Optionally making use of a CUDA enable GPU, Oree achieves reconstruction of over 1M events/sec.

The Orientation Library is a collection of routines for rotation/orientation manipulation. It ranges from general tools to others for crystal orientations. It is written in C and is well-documented. An interactive program enables to run the routines.

English: App to compare local gamma dose rates measured by German state and national authorities. German: Diese App ermöglicht den Vergleich von Messungen an verschiedenen Standorten des Radioaktivitätsmessnetzes des Bundesamtes für Strahlenschutz (http://odlinfo.bfs.de/). Ferner erlaubt es den Vergleich mit Messwerten, die von Landesämtern durchgeführt werden. Die App steht im Quellcode zur Verfügung (BATCH) und ist leicht für den Abruf anderer Daten zu erweitern (siehe Dokumentation unter http://sourceforge.net/projects/ortsdosis-app/files/Dokumentation/Ortsdosis-App-Dokumentation.pdf/download).

PAMELA (Pseudospectral Analysis Method with Exchange & Local Approximations) is a self-contained suite of MATLAB codes that can calculate electronic energies, densities, wavefunctions, and band-bending diagrams within a self-consistent Schrödinger-Poisson formalism.

A shareware for build realtime photoacoustic tomography image using NVidia Geforce GPU. Can work in both offline mode or online mode.

One-dimensional semiconductor device simulator. Developed since 1982, it is widely regarded as the industry standard simulator for the photovoltaic (solar cell) industry.

PCP-net is a browser-based application to calculate preheating temperature, heat input and carbon equivalent, which can be used to avoid hydrogen cracking (cold cracking) in unalloyed and low-alloyed ferritic steels.

PDSTRIP is a hydrodynamic strip code for seakeeping. It computes ship motions for monohulls including sailing boats. PDSTRIP has been abandoned by its initiators, who do not wish to be contacted with use questions. The position of maintainer is vacant.

A set of PERL scripts that form the basis for a (flexible) lab experiment controlling system. GPIB and RS232 device controlling are planned to be part of the base system and not part of the experiment programming. Research life should be easier this way.

The aim of this project is to facilitate the development of open source software for the acceptance testing of commonly used PET (positron emission tomography) systems in accordance with published NEMA standards.

This is a user space driver to log data from PICO ADC 11/12 for Linux. It has been tested on Linux 32 and 64 and on Mac OS X based on Fink project. You find more information about PICO ADC 11/12 here http://www.picotech.com/discontinued/USB-ADC-11.html. This little driver is based on libusb-0.1 (legacy API) which you can find here http://www.libusb.org.

PIMC++ is a code designed to perform fully-correlated simulations of quantum systems in continuous space at finite temperature using Path Integral Monte Carlo. It is designed in a modular way to facilitate easy addition of new algorithms.

PLASMAKIN is a package to handle physical and chemical data used in plasma physics modeling and to compute gas-phase and gas-surface kinetics data: particle production and loss rates, photon emission spectra and energy exchange rates.

Code no longer maintained here, but now transferred to GitHub: https://github.com/peterlu

Frustrated because you want to output a high-quality image from your C++ program but haven't found an easy, direct and fast way? Try PNGwriter. Written with scientific simulations in mind, PNGwriter allows you to plot to a PNG image pixel by pixel. * * *README* * * This is the last PNGwriter release that will be hosted on SourceForge.net. Please use the following site: https://github.com/pngwriter/pngwriter/releases to find all versions of PNGwriter including and later than 0.5.5. The PNGwriter website is still hosted on SourceForge.net: http://pngwriter.sourceforge.net Thank you! @individual61 @ax3l

3D visualisation of the LHC for the ATLAS project and more specifically for the study of muon detection in the muon spectrometer.

MATLAB driver routines for the thermoluminescence apparatus using PT100 resistors as the heating and sensing elements described in the Review of Scientific Instruments v78, 083905 (2007). [DOI: 10.1063/1.2776972]

The Python Unified Membrane Analysis Toolkit is a suite of python tools for analyzing molecular dynamics simulations of membranes.

The Physics eXtension Library (PXL) is a C++ toolkit for fourvector analysis and hypothesis evolution in high energy physics data analysis.

PY-Nodes is a Python 3 based code designed for searching nodes (bands-degenerate points) associated with two or more bands in a given material using the first-principle approach. This code is helpful in efficient searching of the nodes present in the topological semimetals such as- Weyl semimetals, Dirac semimetals & nodal-line semimetals. The code is presently interfaced with the WIEN2k package. The algorithm of the code is based on the Nelder-Mead’s function-minimization approach. The code minimizes the function f(k), which is defined as sum of the absolute energy difference of the adjacent pairs of bands at a given k-point. Please cite the paper mentioned below while using the PY-Nodes code for your research. V. Pandey and S.K. Pandey, Comput. Phys. Commun. 283, 108570 (2023). The link of the paper: https://doi.org/10.1016/j.cpc.2022.108570

Parallel Colt is a multithreaded version of Colt - a library for high performance scientific computing in Java. It contains efficient algorithms for data analysis, linear algebra, multi-dimensional arrays, Fourier transforms, statistics and histogramming

Phenomenological Simulation of Electrical Conductivity in Ceramic Superconductors using High Performance Java (MPJ Express). The source code for this project would be free to download and develop further