用边界粒子法求解柯西反问题的数值计算软件包

为推动无网格方法在反问题中的应用及相关计算软件的发展,介绍基于MATLAB开发的用边界粒子法(Boundary Particle Method,BPM)数值模拟柯西反问题的计算软件包;描述数值算法的理论基础,并结合标准算例介绍软件包的基本功能和使用方法.该软件包可求解含不同形式源项(多项式函数、三角函数、指数函数及其耦合函数等)的椭圆型偏微分方程,并且可用于处理任意几何区域问题.本软件包具有简单易用的图形用户界面,在数值模拟柯西反问题时仅需边界测量数据,且效率高、精度高.     

MATLAB在计算机辅助数值分析与计算中的应用

简要介绍了MATLAB语言，并把MATLAB语言应用于计算机辅助数值分析与计算中，在MATLAB软件环境下研制了计算机辅助数值分析与计算（CANAC）软件包，最后用一个典型实例较为深入地对其使用方法，特点和效果进行讨论，实践表明，该软件包使用效果良好。     

基于Matlab和组态王6.0简易训练模拟器设计

本文提出了一种基于Matlab和组态王6．0的训练模拟器软件编制方法。该方法用Matlab来完成复杂仿真算法的计算任务，用组态王6．0工控软件实现友好的用户界面。二者通过DDE协议进行数据交换。实践证明了这种结合了两种软件优点的方法是可行的。     

基于Matlab和组态王6．0简易训练模拟器设计

本文提出了一种基于Matlab和组态王6．0的训练模拟器软件编制方法。该方法用Matlab来完成复杂仿真算法的计算任务，用组态王6．0工控软件实现友好的用户界面。二者通过DDE协议进行数据交换。实践证明了这种结合了两种软件优点的方法是可行的。     

基于Hopfield神经网络算法的WSN路径优化

针对无线传感器网络（WSN）能量有限的特点,提出一种新的基于Hopfield神经网络的路由优化算法,同时给出能量函数各参数之间的关系。通过Matlab软件对不同规模的网络进行仿真,仿真结果表明,该算法是可行的。     

ControX2000与Matlab之间的实时通讯

简要介绍了通用监控系统支撑软件controX(开物)2000和高性能数值计算仿真软件Matlab的特点．提出了一种基于DDE技术的controX(开物)2000与Matlab之间的实时通讯方法。该方法已成功应用于海军部队某型训练模拟器中．实践证明了此方法的可行性与可靠性。     

基于Matlab的GUI设计遗传算法优化软件

简要阐述了遗传算法的基本原理和优化过程，并利用Matlab6．5的图形用户界面(GUI)功能构造遗传算法优化软件包，为遗传算法解决数值优化问题提供了一个简单的GUI平台。数值仿真说明了该软件包的有效性和实用性。     

轮毂电机驱动电动汽车各轮毂电机扭矩分配算法的仿真和评价

为精确控制轮毂电机驱动电动汽车各轮毂电机的扭矩,获得更好的车辆动力学控制性能,利用Matlab／Simulink对再分配伪逆算法（Redistributed Pseudo—Inverse algorithm,RPI）、层叠广义逆法（Cascading Generalized Inverse algorithm,CGI）和加权最小二乘法（Weighted Least-Squares algorithm,WLS）进行数值仿真,对这3种算法从计算速度、迭代次数和计算精度等方面进行对比分析与评价,结果表明WLS综合性能最优．     

Matlab/Runtime Server工具箱在工程中的应用研究

作为一种高性能的用于工程计算的编程软件,Matlab具有强大的数值计算、图形处理、算法开发等功能,但是具有这些功能的应用程序只能在Matlab环境中使用,代码执行速度慢。该文系统地分析了用Matlab／Runtime Server工具箱进行Matlab应用程序独立发布技术的特点,并重点阐述了利用该工具箱如何实现对Matlab应用程序的独立发布,最后的工程应用实例讨论了具体实现过程,从而拓宽了Matlab在科学研究和工程技术中的应用领域。     

基于COM技术的Matlab编程接口研究

Matlab具有强大的数值分析和运算功能，是一种面向科学和工程计算的解释语言．但它对一些面向综合型 开发的软件没有提供编程接口。本文基于COM技术设计了一种与Matlab的编程接口，分析了该接口的原理和关键 技术，并给出了应用方法。     

注蒸汽热采稠油油藏数值模拟自适应网法计算软件的设计开发

注蒸汽热采稠油是一个带有相变的多孔介质中多相流动问题。利用自适应网格法动态追踪油藏中的温度和饱和度锋面,以大幅度提高计算速度。在对渗透率空间分布不均匀、油藏区域分布不同种类输运性质岩石、裂缝-孔隙双重介质、非规则边界及内部含有断层油藏等复杂地层注蒸汽热采稠油问题开展自适应网格法的研究基础上,自主开发了注蒸汽热采稠油油藏数值模拟自适应网格法计算软件。该软件具有较高的计算精度和稳定性,可满足科研生产需求。     

Software package for solving hyperbolic-type equations

The TURBO1 software package for solving the hyperbolic systems of differential equations on multiprocessor computing systems with distributed memory is described. The package is a standard-oriented and extensible software package. Within a single formalism, it is possible to solve several problems describing different physical processes. For their solution the package provides the user with numerical procedures and software blocks containing initial and boundary conditions, as well as mass forces specific to the problem. The potential of this package is demonstrated on an example from numerical simulation of classical problems of gas dynamics, i.e., the Rayleigh-Taylor instability (RTI) and the shear layer problems.     

Performance analysis of error-control B-spline Gaussian collocation software for PDEs

B-spline Gaussian collocation software has been widely used in the numerical solution of boundary value ordinary differential equations (BVODEs) and 1D partial differential equations (PDEs) for several decades. Such packages represent the numerical solution in terms of a piecewise polynomial (B-spline) basis with basis coefficients determined through the use of Gaussian collocation. The software package, BACOL, developed over a decade ago, was the first 1D PDE package of this type to provide both temporal and spatial error control. A recently developed package, BACOLI, improves upon the efficiency of BACOL through the use of new types of spatial error estimation and control. The complexity of the interactions among the component numerical algorithms used by these packages (particularly the spatial and temporal error estimation and control algorithms) implies that extensive testing and analysis of the test results is an essential factor in the ongoing development of these packages In this paper, we investigate the performance of BACOL and BACOLI with respect to several important machine independent algorithmic measures, examine the effectiveness of the new spatial error estimation and control strategies, and investigate the influence of the choice of the degree of the B-spline basis on the performance of the solvers. These results will provide new insights into how to improve BACOLI, potentially lead to improvements in Gaussian collocation BVODE solvers, and guide further development of B-spline Gaussian collocation software with error control for 2D PDEs.     

An Interactive Data Language software package to calculate ionospheric conductivity by using numerical models

The Inter-university Upper atmosphere Global Observation NETwork (IUGONET) project focuses on handling ground-based observational data of the upper atmosphere. To this end, the project members have been developing a data analysis software package which is based on Interactive Data Language (IDL). Filling the spatial gaps in observational data requires the use of numerical models. In this paper, we discuss an IDL software package for global ionospheric conductivity by integration of 3rd party numerical models. The model can be used to create further derived models.     

The design of a user friendly engineering economy analysis package for a microcomputer

The design and features of a user friendly engineering economy analysis software package for the Apple II microcomputer is described. The software package is written in Applesoft Basic. An Apple II with 64k RAM, one or two disk drives and a line printer is required to use the software package. The package consists of five complementary programs: (1) Selection of the better of two alternatives using present-worth evaluations. (2) Conventional rate-of-return computations for a single project. (3) Selection from mutually exclusive alternatives using rate-of-return analysis. (4) Optimal capital allocation among several investment opportunities under risk. (5) Probabilistic after-tax economic analysis for a single project. All programs but (4) are based on the time value of money. Program (4) is a chance-constrained optimization model utilizing the Lagrange-multiplier technique. Program (5) implements depreciation, debt/equity financing, and taxes and performs a sequential after-tax Monte Carlo simulation over a specified life-span. The use of this software package does not require any previous computer or programming experience. A menu format is used. The software package allows the user to specify the shapes of the interest and inflation probability distributions on a year by year basis. The user has the option to specify the reinvestment rates. The package presents the results in tables and graphs. User acceptance has been excellent with this software package and this package is well suited for the use in an engineering economy class or for the practicing industrial engineer in industry.     

New generation of mixed and dynamic module-type information-measuring telemetering systems based on VXI and LXI standards

The architecture of information-measuring and telemetering systems based on VXI-LXI standard and ACTest software package is considered; the architecture appears to be the most promising and optimal for testing, investigations, control and diagnostics of complex technical objects, as well as for industrial and power objects monitoring. VXI standard is intended to design the accurate and safe control-diagnostic systems and measuring-controlling systems. The paper is dedicated to detailed discussion of the issues regarding design of such systems on the basis of hardware manufactured by Informtest and software package ACTest-VXI, developed by Automation and Control Laboratory (AC) Ltd. [1].     

Parallel software package for simulation of continuum mechanics problems on modern multiprocessor systems

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.     

An R-package to boost fitness and life expectancy of environmental models

Ordinary differential equations (ODE) are at the center of many environmental models. The R software is increasingly used to implement ODE-based models boosted by add-on packages providing numerical solvers. This paper introduces an R package called rodeo to facilitate the implementation of ODE-based models. It addresses a standardized model notation and documentation as well as the automatic generation of efficient, solver-compliant Fortran or R source code. The package has the potential to make a multitude of environmental models, more comprehensible, reusable, and exchangeable.