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1.
In search for a widely applicable and accepted software quality model for software quality engineering 总被引:2,自引:0,他引:2
Software Quality Engineering is an emerging discipline that is concerned with improving the approach to software quality. It is important that this discipline be firmly rooted in a quality model satisfying its needs. In order to define the needs of this discipline, the meaning of quality is broadly defined by reviewing the literature on the subject. Software Quality Engineering needs a quality model that is usable throughout the software lifecycle and that it embraces all the perspectives of quality. The goal of this paper is to propose the characteristics of a quality model suitable for such a purpose, through the comparative evaluation of existing quality models and their respective support for Software Quality Engineering. 相似文献
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This work presents a new version of a software package for the study of chaotic flows, maps and fractals [1]. The codes were written using Scilab, a software package for numerical computations providing a powerful open computing environment for engineering and scientific applications. It was found that Scilab provides various functions for ordinary differential equation solving, Fast Fourier Transform, autocorrelation, and excellent 2D and 3D graphical capabilities. The chaotic behaviors of the nonlinear dynamics systems were analyzed using phase-space maps, autocorrelation functions, power spectra, Lyapunov exponents and Kolmogorov-Sinai entropy. Various well-known examples are implemented, with the capability of the users inserting their own ODE or iterative equations.
New version program summary
Program title: Chaos v2.0Catalogue identifier: AEAP_v2_0Program summary URL:http://cpc.cs.qub.ac.uk/summaries/AEAP_v2_0.htmlProgram obtainable from: CPC Program Library, Queen's University, Belfast, N. IrelandLicensing provisions: Standard CPC licence, http://cpc.cs.qub.ac.uk/licence/licence.htmlNo. of lines in distributed program, including test data, etc.: 1275No. of bytes in distributed program, including test data, etc.: 7135Distribution format: tar.gzProgramming language: Scilab 5.1.1. Scilab 5.1.1 should be installed before running the program. Information about the installation can be found at http://wiki.scilab.org/howto/install/windows.Computer: PC-compatible running Scilab on MS Windows or LinuxOperating system: Windows XP, LinuxRAM: below 150 MegabytesClassification: 6.2Catalogue identifier of previous version: AEAP_v1_0Journal reference of previous version: Comput. Phys. Comm. 178 (2008) 788Does the new version supersede the previous version?: YesNature of problem: Any physical model containing linear or nonlinear ordinary differential equations (ODE).Solution method:- 1.
- Numerical solving of ordinary differential equations for the study of chaotic flows. The chaotic behavior of the nonlinear dynamical system is analyzed using Poincare sections, phase-space maps, autocorrelation functions, power spectra, Lyapunov exponents and Kolmogorov-Sinai entropies.
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- Numerical solving of iterative equations for the study of maps and fractals.
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- A new use case concerning coupled predator-prey models has been added [3].
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- Three new use cases concerning fractals (Sierpinsky gasket, Barnsley's Fern and Tree) have been added [3].
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- The graphical user interface (GUI) of the program has been reconstructed to include the new use cases.
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- The program has been updated to use Scilab 5.1.1 with the new graphical capabilities.
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- interface.sce - the graphical user interface (GUI) that permits the choice of a routine as follows
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- 1.sci - Lorenz dynamical system
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- 2.sci - Chua dynamical system
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- 3.sci - Rosler dynamical system
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- 4.sci - Henon map
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- 5.sci - Lyapunov exponents for Lorenz dynamical system
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- 6.sci - Lyapunov exponent for the logistic map
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- 7.sci - Shannon entropy for the logistic map
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- 8.sci - Coupled predator-prey model
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- 1f.sci - Sierpinsky gasket
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- 2f.sci - Barnsley's Fern
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- 3f.sci - Barnsley's Tree
- [1]
- C.C. Bordeianu, C. Besliu, Al. Jipa, D. Felea, I. V. Grossu, Comput. Phys. Comm. 178 (2008) 788.
- [2]
- S. Campbell, J.P. Chancelier, R. Nikoukhah, Modeling and Simulation in Scilab/Scicos, Springer, 2006.
- [3]
- R.H. Landau, M.J. Paez, C.C. Bordeianu, A Survey of Computational Physics, Introductory Computational Science, Princeton University Press, 2008.
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We have developed a computer software package for Macintosh to simulate the metabolism and hemoglobin binding affinity of human red blood cell. The model is capable of simulating hemoglobin binding of ligands, metabolite concentrations, and metabolic fluxes at physiological steady state and in response to extracellular parameter variations, such as pH, osmolarity, glucose, and adenine concentrations. The kinetic parameters of enzymes, extracellular conditions, and initial intracellular metabolite concentrations can be specified by the user in order to model a particular situation. The software is use friendly, utilizing menu, window, and mouse to interact with the user. It also provides a pathway map of the red cell, which allows a direct access to enzyme kinetics by clicking the enzymes in the map. 相似文献
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S.R. Mulpuru 《Mathematics and computers in simulation》1983,25(4):309-320
Using the technique of flux vector splitting, it is shown that one-dimensional, inviscid, compressible-flow equations possess a split conservation form. Some attractive features of this form for the design of finite-difference solution schemes are discussed. Based on the split form, two solution chemes are designed. One is a first-order accurate ‘upwind’ scheme and the other is similar to the Lax-Wendroff scheme. A hybrid scheme, based on a nonlinear weighting of these two schemes, is demonstrated to yield results superior to either of the two in the solution of an ideal shock-tube problem. 相似文献
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《Computers & Industrial Engineering》1986,10(1):45-68
A program package KINSIMI for an interactive simulation of homogeneous isothermal reactor systems with an arbitrary elementary kinetics has been developed. The simulation of ideal reactors, tanks-in-series, normal axial dispersion reactors and segregated and maximum mixed tanks-in-series and axial dispersion reactors can be performed with the program package. For the ideal reactors and tanks-in-series both step responses and steady states can be computed. For the axial dispersion, segregation and maximum mixedness models the treatment is limited to a steady state stimulation. For the segregation model, empirical batch reactor kinetics can be used in the computation of continuous reactor performance. The corresponding mathematical models and the numerical algorithms are discussed. Two examples of the application of the package are given. The program package can be used for reactor design as well as for educational purposes in illustrating the influence of different reaction mechanisms and flow patterns on the conversion and product distribution. 相似文献
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The Journal of Supercomputing - This paper defines software maintenance activities and develops a model for maintenance cost estimation of package software. First, we classified software... 相似文献
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With the rapid proliferation of complex control systems, such as adaptive control systems, a need has arisen to automate as much as possible of the time-consuming preparatory work needed to simulate such systems. This burden currently falls on the user. The smaller the user time required and the more effortless the process, the greater, the authors believe, will be the eventual widespread acceptability of these control systems. This paper is aimed at bridging this gap between the theoretical specification of a complex discrete-time control system as described in a typical research paper and the obtaining of a first simulation. It provides a graph theoretical formulation of the issues involved, discrete algorithms to execute these tasks, and finally describes ISIM, an interpretive simulator which incorporates these features. These algorithms automate the simulation process, as seen by the user. The net result is a package which essentially requires only that the user type in a control system more or less verbatim from a technical paper to obtain a simulation output 相似文献
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Frank Eisenmenger Ulrich H.E. Hansmann Shura Hayryan Chin-Kun Hu 《Computer Physics Communications》2006,174(5):422-429
We describe a revised and updated version of the program package SMMP (Simple Molecular Mechanics for Proteins) [F. Eisenmenger, U.H.E. Hansmann, Sh. Hayryan, C.-K. Hu, Comput. Phys. Comm. 138 (2001) 192-212]. SMMP is an open-source FORTRAN package for molecular simulation of proteins within the standard geometry model. It is designed as a simple and inexpensive tool for researchers and students to become familiar with protein simulation techniques. This announcement describes the first major revision of this software package and its newly added features.
Program summary
Title of program:SMMPCatalogue identifier:ADOJ−v2−0Program summary URL:http://cpc.cs.qub.ac.uk/summaries/ADOJ_v2_0Program obtainable from: CPC Program Library, Queen's University of Belfast, N. IrelandOperating system under which the program has been tested:LINUX systemProgramming language used:FORTRANComputer:PC PentiumNumber of lines in distributed program, including test data, etc.:18 492Number of bytes in distributed program, including test data, etc.:278 995Distribution format:ASCIICard punching code:ASCIICatalogue Identifier of previous version:ADOJJournal Reference of previous version:F. Eisenmenger, U.H.E. Hansmann, Sh. Hayryan, C.-K. Hu, Comput. Phys. Comm. 138 (2001) 192-212Does the new version supersede the previous version?:YesNature of physical problem:Molecular mechanics computations and Monte Carlo simulation of proteinsReasons for the new version:Increased functionalitySummary of revisions:Changes in energy function and protein representation; differences in program structure and organization; new functionalities added; miscellaneous changes and additionsMethod of solution:Utilizes ECEPP2/3 and FLEX potentials. Includes Monte Carlo simulation algorithms for canonical, as well as for generalized ensemblesRestrictions on the complexity of the problem:The consumed CPU time increases with the size of protein moleculeTypical running time:Depends on the size of the molecule under simulationUnusual features of the program:No 相似文献15.
Tracking is an indispensable part of any virtual reality and augmented reality application. While the need for quality of
tracking, in particular for high performance and fidelity, has led to a large body of past and current research, little attention
is typically paid to software engineering aspects of tracking software. To address this issue we describe a software design
and implementation that applies the pipes-and-filter architectural pattern to provide a customizable and flexible way of dealing
with tracking data and configurations. The contribution of this work cumulates in the development of a generic data flow network
library called OpenTracker to deal specifically with tracking data. The flexibility of the data flow network approach is demonstrated in a set of development
scenarios and prototype applications in the area of mobile augmented reality. 相似文献
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S. V. Polyakov T. A. Kudryashova A. A. Sverdlin E. M. Kononov O. A. Kosolapov 《Mathematical Models and Computer Simulations》2011,3(1):46-57
A parallel software package designed for numerical simulation of continuum mechanics problems is presented. In order to illustrate
the capabilities of the package, two problems on simulation of supersonic gas flows, around a descent space vehicle and in
the vicinity of a micro nozzle, were chosen. A system of equations of quasi-gas dynamics was used as a mathematical model
for the dynamics of gas. Inasmuch as radiation transfer in gas is taken into account in the first problem, the multigroup
approach and diffusion approximation are employed to describe radiation processes. The numerical algorithm is based on explicit
in time finite volume schemes using nonregular locally condensed grids of different types. Parallel implementation of numerical
schemes was executed in the context of the MPI+OpenMP technology and optimized for computations performed by means of modern
clusters with hybrid architecture. 相似文献
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Ivan Markovsky 《Control Engineering Practice》2013,21(10):1422-1436
An identification problem with no a priori separation of the variables into inputs and outputs and representation invariant approximation criterion is considered. The model class consists of linear time-invariant systems of bounded complexity and the approximation criterion is the minimum of a weighted 2-norm distance between the given time series and a time series that is consistent with the model. The problem is equivalent to and is solved as a mosaic-Hankel structured low-rank approximation problem. Software implementing the approach is developed and tested on benchmark problems. Additional nonstandard features of the software are specification of exact and missing variables and identification from multiple experiments. 相似文献
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Quantitative light and electron microscopy is an expanding field which has found applications in many biological disciplines. Computer-enhanced data-acquisition has led to increased speed and accuracy, and combined with computational analysis, stereological parameters can be quickly derived and spatial hypotheses can be easily tested. A software package is described, which controls the manipulation, display and analysis of two-dimensional microscope data. Features include alignment of specimens, rotations, translations, deletions, recoding, perimeter and area measurement, point-counts, tests of dispersion and tests of spatial distributions. The programme is graphics-orientated and supports various point-plot modes and histograms. It includes linear and non-linear curve-fitting options and has been specifically designed to encourage new analysis procedures, which automatically benefit from existing graphics options. 相似文献
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《Environmental Modelling & Software》2000,15(1):23-34
A software package is described for modelling the hydrodynamics in the Arabian Gulf and in arbitrarily small sub-regions of this water body. The package is designed to run under Windows 95 and has user-friendly graphical interfaces for model input and for examination of the output. Examples are shown to illustrate typical input and output screens and to demonstrate the accuracy of the model. 相似文献