一个C^＋＋美化程序的实现途径

本文介绍了一种Ｃ＾＋＋美化程序的实用途径，即先用一个预处理程序将Ｃ＾＋＋＂伪装”成Ｃ，然后利用标准的Ｃ工具进行美化，最后再用一个后处理程序将“伪装”的Ｃ＾＋＋程序转换成其原先的等价形式。     

C＋＋模板类型系统Concepts初探

介绍了C＋＋标准为了适应泛型编程的大规模运用，在语言核心方面对泛型编程能力将要作出的改进，概述了C＋＋模板类型系统Concepts的主要功能和语言要素以及标准库支持，并给出一些例子进行说明。最后，简单介绍了现有的Concepts实现。     

Windows标准控件在Visual C＋＋编程中的使用研究

Windows标准控件是Windows系统预定义的一些行为标准化了的窗口,一般用于Win-dows窗口应用程序中充当与用户交互的元素,其使用方法是Visual C＋＋程序员应该熟练掌握的。介绍Visual C＋＋编程中常用的Windows预定义标准控件,重点介绍了这些控件编程的一般方法,并给出控件编程的实例。     

个性化窗体实现

本文主要介绍如何使用Ｃ＋＋Ｂｕｉｌｄｅｒ实现与ＷＩＮＤＯＷＳ９５标准窗口完全不一样的个性化界面。     

基于VC＋＋的AES算法的实现

本文重点介绍了高级加密标准算法，在研究分析了AES解密／加密原理的基础上，用VC＋＋语言完整的实现了AES算法。     

SDAI的C++联编及其基于VERSANT的实现

ＳＤＡＩ是ＳＴＥＰ的标准数据访问接口,Ｃ＋＋作为一种面向对象语言,可以全面包容ＳＴＥＰ信息建模语言ＥＸＰＲＥＳＳ的语义功能,本文论述了ＳＤＡＩ的Ｃ＋＋早,晚联编的有关概念,从ＳＤＡＩ的原始数据类型／实体数据类型／聚集数据类型的Ｃ＋＋联编,父／子类关系等方面对Ｃ＋＋晚联编展开讨论,并介绍基于面向对象数据库ＶＥＲＡＮＴ进行ＳＤＡＩ／Ｃ＋＋联编实现的工作。     

基于面向对象的C^＋＋通讯流的构造与实现

本文对Ｃ＋＋的流类进行了扩充，给出了基于ＲＳ－２３２Ｃ标准串行口进行数据输入输出的通讯流的构造及实现方法。     

用C++ Builder简便扩展Intouch组态软件

介绍了Wonderware公司软件Intouch和如何用C＋＋Builder与标准DDE协议简便地扩展Intouch的功能,并给出了部分实现例程。     

STL中Generic算法的扩展

Generic程序设计是实现软件重用的重要方法之一，文章介绍了generic程序设计与C＋＋标准模板库（STL），探讨了STL中generic算法的扩展方法。     

多线程共享智能指针的实现

标准C＋＋库的智能指针适用范围有限。介绍一种共享智能指针SmartPtr的实现。SmartPtr模拟C＋＋指针的语法和语义,用互斥对象加锁的引用计数器记录内存对象的共享次数。SmartPtr适用范围广,同时具有简单高效、使用方便的特点。     

异构集群式包构建系统的三级负载均衡调度技术*

异构集群式包构建系统是集群式软件配置管理系统的主要功能部件,也是操作系统发行版本的重要生成系统。本文针对异构集群式包构建系统存在的负载不均、可用性差等不足,引入三级负载均衡调度技术,优化了系统的调度策略,能够更加有效地利用集群系统的系统资源,发挥更加高效的性能,提高了系统的可用性和高效性,便于高质量、高效生成操作系统发行版本。     

GEOMPACK — a software package for the generation of meshes using geometric algorithms

We describe the mathematical software package GEOMPACK, which contains standard Fortran 77 routines for the generation of two-dimensional triangular and three-dimensional tetrahedral finite element meshes using efficient geometric algorithms. This package results from our research into mesh generation and geometric algorithms. It contains routines for constructing two- and three-dimensional Delaunay triangulations, decomposing a general polygonal region into simple or convex polygons, constructing the visibility polygon of a simple polygon from a viewpoint, and other geometric algorithms, from which our mesh generation method is built and others can be implemented. Our method generates meshes in polygonal or polyhedral regions specified by their boundary representation and possible interfaces between subregions.     

航班延误预警图形组件包的设计与实现

为了给航班延误预警平台提供图形生成服务,设计并实现航班延误预警图形组件包,用于自动生成航班延误波及DAG、高级Petri网、贝叶斯网络和元胞自动机等数学模型的仿真视图,以及棒图等统计图。图形组件包包括外层服务和核心引擎两部分。外层服务生成图形XML文档,核心引擎解析该文档并渲染生成图形。图形组件包以Web服务暴露接口,以XML作为数据交换媒介,提高了互操作性和通用性。实验表明,该图形组件包可以有效满足航班延误预警平台的图形生成和表现需求。     

Software evaluation: a situated approach

Abstract It is suggested that the use of educational software can only be evaluated by considering the use of a package in particular learning situations. This requirement poses an inherent problem for predictive evaluation where, by definition, the evaluation is conducted out of context. Current predictive evaluation tools, checklists and frameworks, fail to address this problem. A novel evaluation paradigm is proposed which does provide a situated approach to predictive evaluation. This paradigm generates context specific evaluation issues by considering the interactions between the three principal actors associated with the development and use of educational software — the teacher, the designer and the student(s). The use of the paradigm is illustrated by the predictive evaluation of a recent CD-ROM package. In conclusion, the paradigm may offer an improved approach to interpretative evaluation, leading to the notion of its use as a comprehensive evaluation tool.     

MEMS-Assisted Cryptography for CPI Protection

The authors present a concept for an anti-tamper system that dynamically generates a cryptographic key derived from microelectromechanical systems (MEMS) arrays encapsulated within a protected system in a single package. The system provides protection in active and passive states with no battery backup.     

Missing data imputation, matching and other applications of random recursive partitioning

Applications of the random recursive partitioning (RRP) method are described. This method generates a proximity matrix which can be used in non-parametric matching problems such as hot-deck missing data imputation and average treatment effect estimation. RRP is a Monte Carlo procedure that randomly generates non-empty recursive partitions of the data and calculates the proximity between observations as the empirical frequency in the same cell of these random partitions over all the replications. Also, the method in the presence of missing data is invariant under monotonic transformations of the data but no other formal properties of the method are known yet. Therefore, Monte Carlo experiments were conducted in order to explore the performance of the method. A companion software is available as a package for the R statistical environment.     

A planar graph drawing program

This paper describes a program, written in FORTRAN, for a 64K I.C.L. 4130 which will accept data describing the ordering of nodes and branches within the regions of a planar graph, and generate a two-dimensional representation, without crossovers, from these data. The program was written to provide one of the basic ‘tools’ required in the development of a printed wiring board layout program for the electronics industry The program generates display code which is sent to a satellite PDP-7 computer driving a 340 display. On completion of the automatic drawing phase an interactive phase is entered in which the user can ‘tidy’ and label the drawing, by means of keyboard and light-pen commands Brief notes are included on the hardware, the data structures package (MINIJASP, derived from ASP) and the graphics package, employed.     

Development of computer assisted modelling of industrial robot arms

This study deals with the development of a computer assisted modelling system of industrial robot arms. This system consists of a software package which generates the robot arm models in symbolic and explicit forms. These models are obtained in a near minimum number of arithmetic operations. The developed programs {MPLCS & MGLCS} are written in Turbo-pascal language and operate on personal computers PCs. The obtained models can be used to develop a simulation system for robot arm control. Three examples are presented to show the effectiveness of such programs. This study is useful for the robot arm's users, makers, researchers, and operators.     

基于混合编程的动力学性能鉴定系统

该系统是应用于铁道车辆动力学性能鉴定和实验鉴定的数据处理系统。设计了对不同数据文件格式的相互转换、数据滤波、傅里叶变换、平稳性、功率谱等运算,并绘制出相应的时序和功能图,以及实现报表的自动生成。软件设计参考混合编程思想,采用VC＋＋调用Matlab C＋＋数学库,封装成本系统所需的数学库,以Delphi为界面设计,调用自制的数学库,实现整个软件系统的设计。     

A bond graph approach to the modeling and simulation of switch regulated DC-to-DC power supplies

A bond graph approach is proposed for the modeling and simulation of switched DC-to-DC power converters of the boost type, regulated by means of a pulse-width-modulation (PWM) strategy. An average bond graph model of the PWM regulated DC-to-DC power converter is derived using ideal lossless transformer elements. The proposed bond graph model constitutes an “input” to a computer aided package, called DESIS, which automatically generates the system model as a set of differential equations with explicit control parameters. The computer package is also capable of simulating both the average and the actual discontinuous PWM regulated responses of the DC-to-DC power converter for a given feedback duty ratio policy.