data modelisation

Data modelisation
Higher Edu - Research dev card
Development from the higher education and research community
  • Creation or important update: 19/09/13
  • Minor correction: 19/09/13
  • Index card author: Eric Hivon (IAP)
  • Theme leader : Dirk Hoffmann (Centre de Physique des Particules de Marseille (CPPM-IN2P3))

HEALPix : data analysis, simulation and visualisation on the sphere

This software was developed (or is under development) within the higher education and research community. Its stability can vary (see fields below) and its working state is not guaranteed.
  • Web site
  • System:
  • Current version: 3.11 - April 2013
  • License(s): GPL - GPLv2
  • Status: stable release
  • Support: maintained, ongoing development
  • Designer(s): Eric Hivon; Martin Reinecke; Krzysztof M. Gorski; Anthony J. Banday; Benjamin D. Wandelt; Emmanuel Joliet; William O'Mullane; Cyrille Rosset; Andrea Zonca
  • Contact designer(s): hivon at iap.fr
  • Laboratory, service: MPA (Garching, Allemagne), Caltech (Pasadena, CA,Etats-Unis), TAC (Copenhague, Danemark), ESAC (Madrid, Espagne), JPL (Pasadena, CA, Etats-Unis), ESO (Garching, Allemagne)

 

General software features

The HEALPix software implements the HEALPix (Hierarchical Equal Area iso-Latitude Pixelation) pixelation of the sphere. Initially developed for the simulation and analysis of ESA Planck satellite observations (dedicated to the study of the Cosmic Microwave Background (CMB) anisotropies, whose first results were delivered in March 2013), this software and its pixelation algorithm have become standard tools in the simulation and analysis of data on the sphere, including the NASA WMAP satellite, also dedicated to CMB observation, and the Pierre Auger ground based observatory for high energy cosmic rays, and are used for other astrophysical and geological studies.

Main features of the pixelation

At a given resolution, all HEALPix pixels have the same surface area, even if their shape varies slightly. Thanks to the hierarchical feature of the pixelation, upgrading its resolution to the next level simply amounts to divide each pixel into four sub-pixel of the same area. This allows quick and efficient upgrading and downgrading operations of existing maps.

Since the pixels are regularly spaced on iso-latitude rings, Spherical Harmonics can be computed very efficiently. The synthesis or analysis up to multipole Lmax  of a spherical data set containing Npix pixels is reduced from    Npix Lmax2   to   Npix½ Lmax2  compared to non iso-latitude pixelation.

Features of the software package

The represents data on the sphere, and enables analysis or simulation of these maps in (scalar or spin-weighted) Spherical Harmonics, as well as various kinds of statistical analyses and processing. Portable FITS files are used for input and output. The list of available functions includes:

  • generation of random maps (gaussian or not) from an arbitrary angular power spectrum,
  • computation of the angular power spectrum (or angular correlation function) of a map,
  • convolution of a spherical map with an arbitrary circular window,
  • tessellation of the sphere and pixel processing supported down to a pixel size of 0.4 milliarcseconds (equivalent to 3.5 1018 pixels on the sphere),
  • median filtering of a map,
  • search of local extrema in a map,
  • query of pixels located in user defined disks, triangles, polygons, ...
  • processing of binary masks to identify 'holes' in order to fill them, or to apodize masks,
  • visualization of HEALPix sky maps either on the whole sky (using Mollweide or orthographic projections) or on a patch (gnomic or cartesian projections),
  • output in Google Map/Google Sky and DomeMaster format.

The most expensive operations, such a Spherical Harmonics Transform have been carefully optimised and benefit from a shared memory parallelisation based on OpenMP.

Contents of the software package

The software is available in C, C++, Fortran90, IDL/GDL, Java and python. The following modules are provided in each of these languages:

  • a library of tools (subroutines, functions, procedures, modules, classes, ...depending on languages) covering most of the functionnalities described above, as well as supporting ancillary tools (eg, parameter file parsing),
  • a set of stand-alone facilities based on the library above and each implementing one of HEALPix major features (map generation or analysis, filtering, resolution udgrade or downgrade, visualization). These applications are generally run via an interactive dialog or an ASCII parameter file. Their source code can be used as a starting point for user specific developments,
  • an extensive PDF and/or HTML documentation describing in details the API, inner working and limitations of each tool and application.

Finally, some tools (interactive script and Makefile) are provided to manage and facilitate the compilation and installation of one or several of the libraries and facilities, for most combinations of hardwares, operating systems, compilers, ...

Third Party Developements

One can distinguish two kinds of third party developements (defined as not (yet) being part of the official HEALPix package described above):

  • new functionalities, for instance many tools based on Minkowski functionals, wavelets (iSAP, MRS, S2LET, SphereLab), or structure identification (DisPerSE) developed by various research teams can be applied to data stored in HEALPix format,
  • translations, re-implementations or wrapping of (some of) existing functionalities, for instance in Matlab/Octave (Mealpix) and Yorick (YHeal) are available. (See (almost) exhaustive list.)

Context in which the software is used

Software used for the analysis of Planck satellite data.
Data format supported by Aladin visualisation software to represent diffuse astronomical data on the sky.

Publications related to the software

Higher Edu - Research dev card
Development from the higher education and research community
  • Creation or important update: 11/09/13
  • Minor correction: 11/09/13

Signal separation : generation and separation of digital signals

This software was developed (or is under development) within the higher education and research community. Its stability can vary (see fields below) and its working state is not guaranteed.
  • System:
  • Current version: 2012
  • License(s): Proprietary licence
  • Status: internal use
  • Support: not maintained, no ongoing development
  • Designer(s): Elena Florian, Antoine Chevreuil, Philippe Loubaton.
  • Contact designer(s): Philippe.Loubaton @ univ-mlv.fr
  • Laboratory, service:

 

General software features

This sofware generates various kinds of signals produced by standard digital communication systems, and simulates their propagation into a multi-channel multi-paths propagation channel. A number of blind source separation algorithms are also implemented.

Context in which the software is used

This software has been released for the industrial contract Aintercom, this software is not distributed otherwise.

Publications related to the software
  • Elena Florian, Antoine Chevreuil, Philippe Loubaton. Blind source separation of convolutive mixtures of non circular linearly modulated signals with unknown baud rates. Signal Processing, 2012, 92, pp. 715-726.

  • P. Jallon, Antoine Chevreuil, Philippe Loubaton. Separation of digital communication mixtures with the CMA: case of various unknown baud rates. Signal Processing, 2010, 90 (9), pp. 2633-2647.

Higher Edu - Research dev card
Development from the higher education and research community
  • Creation or important update: 05/06/12
  • Minor correction: 07/06/12

DOLMEN : Numerical 3D software for Eddy Current Non Destructive Testing

This software was developed (or is under development) within the higher education and research community. Its stability can vary (see fields below) and its working state is not guaranteed.
  • Web site
  • System:
  • Status: internal use
  • Support: maintained, ongoing development
  • Designer(s): Yahya Choua, Guillaume Krebs, Yann Le Bihan, Alexandro Ospina, Laurent SantandrĂ©a, Houda Zaidi
  • Contact designer(s): yann.le-bihan[at]lgep.supelec.fr
  • Laboratory, service:

 

General software features

DOLMEN is a numerical software dedicated to Eddy Current Non Destructive Testing (EC-NDT). The quasi-stationary Maxwell equations are solved using the Finite Element Method in 3D. The dual electric and magnetic formulations with electric and magnetic combined potentials are used in harmonic regime. First order edge and nodal Whitney tetrahedral elements are used. The gauging conditions are avoided using an iterative solver to ensure the uniqueness of the solution.

Specific developments concerning EC-NDT have been made:

  • Taking into account the probe movement.
  • Automatic mesh adaptation based on a local error estimator using the complementarity between the two formulations.
  • Numerical methods dedicated to the thin geometric structures (flaws, thin lift-off , thin coil, deposit, coating, ...).
  • Transmitter/Receiver with common or separated functions.

This code is based on an object oriented approach using the C++ language. Its software architecture is based on the Freefem++ kernel. It is droved by a Python script and it uses Netgen as Mesh generator. Distributed computing can be used to manage probe displacement.

Context in which the software is used

This software is used in research academic NDT frameworks (European research project VERDICT 2003-2006, Competitiveness cluster SYSTEM@TIC PARIS-REGION, french framework SIMCO-IMPACT, collaborative works with Dassault, CEA-LIST, LSS, Univ. Budapest, ...).

Publications related to the software

A contribution to connect non-conform meshes with overlapping finite elements, H. Zaidi, L. Santandréa, G. Krebs, Y. Le Bihan, "IGTE", Graz, AT, 19 September 2010, pp. 1-6, Proceedings of IGTE.

Electromagnetic Field Computation in Magnetic and Conductive Thin sheets, A. Ospina Vargas, L. Santandréa, Y. Le Bihan, C. Marchand, Sensor Letters", Vol. 7, Issue: 3, June 2009, pp. 480-485.

Adaptive Mesh Refinement and Probe Signal Calculation in Eddy Current NDT by Complementary Formulations, M. Bensetti, Y. Choua, L. Santandréa, Y. Le Bihan, C. Marchand, IEEE Transaction on magnetics, juin 2008, volume 44, issue 6, pp. 1646-1649.

Crack modelling in ECT with combined potential formulations, Y. Choua, L. Santandréa, Y. Le-Bihan, C. Marchand, IEEE Transactions on magnetics, April 2007, Volume 43, Issue 4, pp. 1789-1792.

Using Mortar Element Method for Eddy Current Testing Finite Element Computations, L. Santandrea, Y. Choua, Y. Le Bihan, C. Marchand, COMPUMAG, Aachen (juin 2007).

Higher Edu - Research dev card
Development from the higher education and research community
  • Creation or important update: 15/12/11
  • Minor correction: 15/12/11

GMTE : the Graph Matching and Transformation Engine

This software was developed (or is under development) within the higher education and research community. Its stability can vary (see fields below) and its working state is not guaranteed.
  • Web site
  • System:
  • Current version: 1.0
  • License(s): CeCILL - freeware binary
  • Status: under development
  • Support: not maintained, ongoing development
  • Designer(s): Ismael Bouassida, Khalil Drira , Karim Guenoun
  • Contact designer(s): bouassida@redcad.org
  • Laboratory, service: ReDCAD (UniversitĂ© de Sfax)

 

General software features

GMTE, the graph matching and transformation engine is an efficient tool we have been implementing in C++ since a decade now. It is an efficient implementation of an extension of Messmer's algorithm. Our experiments show that the tool is capable of searching small and medium graph patterns in huge graphs in a short time. A computational complexity analysis of our algorithm has conducted and performant experimental results are obtained.We have also shown that, when only constant labels are considered, this complexity is similar to the complexity of UllmannÂ’s algorithm . Both pattern graph (called rule graph) and host graph have labelled nodes and edges. The rule graph labels may be totally or partially instatiated. Unification is conducted for non-instantiated labels. The tool can be used non-interactively as a C++ library providing a function that can be invoked from either a C++ or a Java main program. The tool can be used through as a C++ executable that reads rule graph and host graph description from input TXT or XML files.

Context in which the software is used

GMTE allows to execute rules to describe the dynamic evolution of architectures. It is also used to simulate the different instantiation component stages, behaviour change during implementation, migration, and other characteristics specific to the distributed systems software architecture. (Projet ITEA USENET) (self-healing web services : projet IST WS-DIAMOND).

Publications related to the software

I.BOUASSIDA , K.GUENNOUN , K.DRIRA , C.CHASSOT , M.JMAIEL
A rule-driven approach for architectural self adaptation in collaborative activities using graph grammars
International Journal of Autonomic Computing, Vol.1, N°3, pp.226-245, Mars 2010

I.BOUASSIDA , K.DRIRA , C.CHASSOT , M.JMAIEL
A model-based multi-level architectural reconfiguration applied to adaptability management in context-aware cooperative communication support systems
Working IEEE/IFIP Conference on Software Architecture & European Conference on Software Architecture, WICSA/ECSA 2009, Cambridge (Royaume- Unis), 14-17 Septembre 2009, pp.353-356

K.GUENNOUN , K.DRIRA , N.VAN WAMBEKE , C.CHASSOT , F.ARMANDO , E.EXPOSITO
A framework of models for QoS-oriented adaptive deployment of multi-layer communication services in group cooperative activities
Computer Communications, Vol.31, N°13, pp.3003-3017, Août 2008

Higher Edu - Research dev card
Development from the higher education and research community
  • Creation or important update: 25/11/11
  • Minor correction: 23/11/12

ROTORINSA : prediction of the dynamic behavior of rotors in bending

This software was developed (or is under development) within the higher education and research community. Its stability can vary (see fields below) and its working state is not guaranteed.
  • Web site
  • System:
  • Current version: Version 4.0.4 - March 2011
  • License(s): Proprietary licence -

    A free version may be loaded : http://rotorinsa.insa-lyon.fr/modules/formulaire/index.php?id=2&rub=05

  • Status: stable release
  • Support: maintained, ongoing development
  • Designer(s): Guy FERRARIS, Michel LALANNE, Marie Ange ANDRIANOELY
  • Contact designer(s): rotorinsa@insa-lyon.fr
  • Laboratory, service:

 

General software features

This finite element software is devoted to the prediction of the steady state behavior of monorotors in bending.
Modeling
Node: 4 degrees of freedom.
Shaft: two-node beam element, classical stiffness and mass matrices, axial forces, shear, rotatory inertia and gyroscopic effect are taken into account.
Disk: one-node disk element, rigid and defined by mass and gyroscopic matrices.
Bearings: stiffness and damping matrices which can be non-symmetric and can vary as a function of the speed of rotation; active magnetic bearings.
Specific elements: modeling of particular effects such as couplings, magnetic attraction, stator …

ROTORINSA predicts:
In Statics:
- The deflection of the shaft subjected to gravity and/or forces which can be concentrated.

In Dynamics:
- Natural frequencies and modes in rotation, Campbell diagram, instabilities and damping factors.
- Mass unbalance response, asynchronous force response, response to a harmonic force fixed in space.
- Maximum stresses in the shafts, loads on bearings.
- Elementary energies.

Context in which the software is used

ROTORINSA is used for rotating machinery design and modification of the architecture of existing machines.
ROTORINSA is implemented on more than 20 industrial sites. It has been and it is still used for training at INSA-Lyon in France and in foreign countries.

The expertise of the laboratory has been greatly gained from contracts with companies and state organizations over a period of nearly 30 years.

Publications related to the software

The software is based on the theory presented in:
1. Rotordynamics Prediction in Engineering by Michel Lalanne and Guy Ferraris. J. Wiley, 254 p, 2nd edition 1998.
ISBN 0 471 97288 6
2. Dynamique des rotors en flexion. Guy Ferraris, Michel Lalanne. Techniques de l’ingénieur Traité
GĂ©nie MĂ©canique, B5 110, 1996.

ROTORINSA User manual
Marie Ange ANDRIANOELY - Guy FERRARIS - Michel LALANNE - Alain BERLIOZ - Alain THIVILLIER
Version 4.0.4 2011

ROTORINSA Qualification manual
Guy FERRARIS - Marie Ange ANDRIANOELY - Michel LALANNE - Alain BERLIOZ - Alain THIVILLIER
Version 4.0.4 2011

Higher Edu - Research dev card
Development from the higher education and research community
  • Creation or important update: 25/11/11
  • Minor correction: 25/11/11

MULTIROTOR : prediction of the dynamic behavior of multirotors

This software was developed (or is under development) within the higher education and research community. Its stability can vary (see fields below) and its working state is not guaranteed.
  • System:
  • Current version: March 2010
  • License(s): Proprietary licence
  • Status: stable release
  • Support: maintained, ongoing development
  • Designer(s): Guy FERRARIS, Michel LALANNE
  • Contact designer(s): rotorinsa@insa-lyon.fr
  • Laboratory, service:

 

General software features

This finite element software is devoted to the prediction of the dynamic behavior of parallel multirotors in bending.
Modeling
Node: 4 degrees of freedom.
Shaft: two-node beam element, classical stiffness and mass matrices, axial forces, shear, rotatory inertia and gyroscopic effect are taken into account.
Disk: one-node disk element, rigid, defined by mass and gyroscopic matrices effects.
Bearings: stiffness and damping matrices which can be non-symmetric and can vary as a function of the speed of rotation.
Specific elements: modeling of particular effects such as couplings, magnetic attraction, stator …

MULTIROTOR predicts:
In Statics:
- The deflection of the shafts subjected to gravity and/or forces which can be concentrated.

In Dynamics:
- Natural frequencies and modes in rotation, Campbell diagram, instabilities and damping factors.
- Mass unbalance response, asynchronous force response, response to a harmonic force fixed in space.
- Maximum stresses in the shafts, loads on bearings.
- Elementary energies, kinetic and strain energies in elements.

Context in which the software is used

MULTIROTOR is used for rotating machinery design, especially for jet engines and for the modification of the architecture of existing machines.
MULTIROTOR is used for training at INSA-Lyon, in France and in foreign countries.

The expertise of the laboratory has been greatly gained from contracts with companies and state organizations over a period of nearly 30 years.

Publications related to the software

The software is based on the theory presented in:
1. Prédiction du comportement dynamique des moteurs d’avion : vitesses critiques, effets de balourd. Patrick Berthier, Guy Ferraris, Michel Lalanne. J. Mec.Th. et Appl, 5. 1986.
2. Prediction of the dynamic behavior of non-symmetric coaxial co-or counter rotating rotors .G Ferraris, V.Maisonneuve , M.Lalanne. J of Sound and Vibration 1996 195(4), 649-666.
3. Rotordynamics Prediction in Engineering by Michel Lalanne and Guy Ferraris. J. Wiley, 254 p, 2nd edition 1998. ISBN 0 471 97288 6
4. Dynamique des rotors en flexion. Guy Ferraris, Michel Lalanne. Techniques de l’ingénieur Traité Génie Mécanique, B5 110, 1996.

Higher Edu - Research dev card
Development from the higher education and research community
  • Creation or important update: 25/11/11
  • Minor correction: 23/11/12

TORSION : prediction of the dynamic behavior of rotors in torsion

This software was developed (or is under development) within the higher education and research community. Its stability can vary (see fields below) and its working state is not guaranteed.
  • System:
  • Current version: TORSION version 1.0.0 - December 2007
  • License(s): Proprietary licence
  • Status: stable release
  • Support: maintained, ongoing development
  • Designer(s): Guy FERRARIS, Marie Ange ANDRIANOELY
  • Contact designer(s): rotorinsa@insa-lyon.fr
  • Laboratory, service:

 

General software features

This finite element computer program is devoted to the steady state or the transient dynamic behavior of multirotors in torsion.

Modeling
Node: 2 degrees of freedom.
Shaft: two-node beam elements in torsion.
Disk: one-node disk element, rigid.
Gears.
Supplementary stiffness, mass, damping elements.
Discrete element.

Statics' Prediction: deflection of rotor in torsion subject to several torques.

Dynamic Prediction:
In steady state: frequencies, modes, harmonic force response and energies in elements.
In transient motion: couples, speeds are function of time.

Context in which the software is used

TORSION is used for rotating machinery design and for the modification of the architecture of existing machines.

TORSION is used for training at INSA-Lyon, in France and in foreign countries.

The expertise of the laboratory has been greatly gained from contracts with companies and state organizations over a period of nearly 30 years.

Publications related to the software

The software is based on the theory presented in:
1. Rotordynamics Prediction in Engineering by Michel Lalanne and Guy Ferraris. J. Wiley, 254 p, 2nd edition 1988. ISBN 0 471 97288 6
2. Dynamic problems concerning the speed of rotation increase of a turbine –blower assembly. A Castilho G Jacquet-Richardet, M.Lalanne, J of Sound and Vibration 1998 215(1), 47-62.

TORSION Manuel d'utilisation
Marie Ange ANDRIANOELY - Guy FERRARIS
Version 1.0.0 2007

Higher Edu - Research dev card
Development from the higher education and research community
  • Creation or important update: 28/03/11
  • Minor correction: 21/05/19

Monolix : analysis of non linear mixed effects models

This software was developed (or is under development) within the higher education and research community. Its stability can vary (see fields below) and its working state is not guaranteed.
  • Web site
  • System:
  • Current version: 3.1 - 10/2009
  • License(s): CeCILL
  • Status: validated (according to PLUME), under development
  • Support: maintained, ongoing development
  • Designer(s): Marc Lavielle, Hector Mesa, Kaelig Chatel, BenoĂ®t Charles, Eric Blaudez
  • Contact designer(s): Marc.Lavielle@math.u-psud.fr
  • Laboratory, service:

 

General software features

MONOLIX is a free software dedicated to the analysis of non linear mixed effects models. The objective of this software is to perform: parameter estimation, model selection, goodness of fit plots and, data simulation.

Context in which the software is used
  • Research in statistic: University of Paris 5, 11 and 13
  • Research in pharmacology: INSERM - P7
  • Research in microbiology : INRA
Publications related to the software

SAEM algorithm

  • Delyon B., Lavielle M., and Moulines E. "Convergence of a stochastic approximation version of the EM algorithm" The Annals of Stat., vol 27, no. 1, pp 94-128, 1999.
  • Kuhn E., Lavielle M. "Coupling a stochastic approximation version of EM with a MCMC procedure" ESAIM P&S, vol.8, pp 115-131, 2004.
  • Kuhn E., Lavielle M. "Maximum likelihood estimation in nonlinear mixed effects models" Computational Statistics and Data Analysis, vol. 49, No. 4, pp 1020-1038, 2005.
  • Lavielle M., Meza C. "A Parameter Expansion version of the SAEM algorithm" Statistics and Computing, vol. 17, pp 121-130, 2007.
  • Donnet S., Samson A. "Estimation of parameters in incomplete data models defined by dynamical systems" Jour. of Stat. Planning and Inference, vol. 137, no. 9, pp 2815-2831, 2007.
  • Meza C., Jaffrezic F., Foulley J.L. "REML estimation of variance parameters in non linear mixed effects models using the SAEM algorithm" The Biometrical Journal 49, 1-13, 2007.
  • Donnet S., Samson A. "Parametric inference for mixed models defined by stochastic differential equations" ESAIM P&S, 12:196-218, (2008).

Applications

  • Makowski D., Lavielle M. "Using SAEM to estimate parameters of models of response to applied fertilizer" Journal of agricultural, Biological and Enviromental Statistics, vol. 11, n. 1, pp. 45-60, 2006.
  • Samson A., Lavielle M., MentrĂ© F. "Extension of the SAEM algorithm to left-censored data in non-linear mixed-effects model: application to HIV dynamics models" Computational Statistics and Data Analysis, vol. 51, pp. 1562--1574, 2006.
  • Jaffrezic F., Meza C., Lavielle M., Foulley J.L. "Genetics analysis of growth curves using the SAEM algorithm" Genetics Selection Evolution, vol. 38, pp. 583--600, 2006.
  • Lavielle M., MentrĂ© F. "Estimation of population pharmacokinetic parameters of saquinavir in HIV patients and covariate analysis with the SAEM algorithm" Journal of Pharmacokinetics and Pharmacodynamics, vol. 34, pp. 229--49, 2007.
  • Comets E, Verstuyft C, Lavielle M, Jaillon P, Becquemont L, MentrĂ© F. Modelling the influence of MDR1 polymorphism on digoxin pharmacokinetic parameters. European Journal of Clinical Pharmacology, 63, pp. 437-49, 2007.
  • Samson A., Lavielle M., MentrĂ© F. "The SAEM algorithm for group comparison tests in longitudinal data analysis based on nonlinear mixed-effects model" Statistics in Medicine, vol. 26, pp 4860-4875, 2007.
Higher Edu - Research dev card
Development from the higher education and research community
  • Creation or important update: 04/03/11
  • Minor correction: 04/03/11

Okada : surface deformation due to a finite rectangular source in elastic half-space [Okada, 1985]

This software was developed (or is under development) within the higher education and research community. Its stability can vary (see fields below) and its working state is not guaranteed.
  • Web site
  • System:
  • License(s): BSD
  • Status: stable release
  • Support: maintained, no ongoing development
  • Designer(s): François Beauducel
  • Contact designer(s): beauducel_@_ipgp.fr
  • Laboratory, service:

 

General software features

The Okada [1985] model calculates analytical solution for surface deformation due to shear and tensile faults in an elastic half-space. Given rectangular fault geometry (length, width, depth, strike, dip) and 3-component dislocation amplitude (shear and tensile), it computes the displacements, tilt and horizontal strain at the free-surface.

The proposed Matlab script is a literal transcription of the Okada's equations, except that it proposes a strike angle of the fault. Dislocation parameters are given by: rake, slip and opening (instead of U1, U2, U3), following Aki & Richards [1980] definition, and (x,y) coordinates are relative to fault centroid. Lamé's constants λ and μ are also replaced by Poisson's ratio ν, since the equations are independent of other elastic parameters.

All the equations have been vectorized relative to coordinates (x,y) which can be for instance a meshgrid output.

See help for syntax, and script comments for details.

Context in which the software is used

This model is widely used in Earth Sciences to simulate ground deformation produced by local perturbation like tectonic faults (for earthquakes deformation or tsunami source) or volcanic dykes (magmatic intrusion at depth).

Publications related to the software

Okada Y., Surface deformation due to shear and tensile faults in a half-space, Bull. Seismol. Soc. Am., 75:4, 1135-1154, 1985.

Aki K., and P. G. Richards, Quantitative seismology, Freemann & Co, New York, 1980.

Higher Edu - Research dev card
Development from the higher education and research community
  • Creation or important update: 16/10/10
  • Minor correction: 07/10/11

Gabedit : a graphical user interface for computational chemistry softwares

This software was developed (or is under development) within the higher education and research community. Its stability can vary (see fields below) and its working state is not guaranteed.
  • Web site
  • System:
  • Current version: 2.3.4 - 06/10/2011
  • License(s): Other - Free/open source licence
  • Status: validated (according to PLUME)
  • Support: maintained, ongoing development
  • Designer(s): Abdul-Rahman Allouche
  • Contact designer(s): allouchear@users.sourceforge.net
  • Laboratory, service:

 

General software features

Gabedit is a freeware graphical user interface, offering preprocessing and postprocessing adapted to ten computational chemistry software packages: Gamess-US, Gaussian, Molcas, Molpro, MPQC, NWChem, OpenMopac, PCGamess (FireFly), ORCA et Q-Chem. It includes tools for editing, displaying, analyzing, converting, and animating molecular systems. A conformational search tool is implemented using a molecular mechanics or a semiempirical potential. Input files can be generated for the computational chemistry software supported by Gabedit. Some molecular properties of interest are processed directly from the output of the computational chemistry programs; others are calculated by Gabedit before display. Molecular orbitals, electron density, electrostatic potential, electron localization function (ELF), and any other volumetric data properties can be displayed. It can display electronic circular dichroism, UV–visible, infrared, and Raman-computed spectra after a convolution. Gabedit can generate a Povray file for geometry, surfaces, contours, and color-coded planes. Output can be exported to a selection of popular image and vector graphics file formats. The program can also generate a series of pictures for animation.

Context in which the software is used

This software is already widely broadcast (over 1,000 downloads per month).
It is used in academic world, in research and in teaching, and in private companies (HP, Nissan, Fujitsu).

Publications related to the software

A.R. ALLOUCHE, Gabedit - A graphical user interface for computational chemistry softwares, Journal of Computational Chemistry, 32 (2011) 174-182. DOI: 10.1002/jcc.21600

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