汽车空调用短管节流件设计校核软件的研制

利用VB语言和Fortran语言混合编程技术,开发了适用于汽车空调器的短管节流件设计和校核计算软件.本文介绍了该软件的结构和功能,并举例说明了软件的使用方法.借助该软件,只需输入有关参数,便能自动完成计算并输出准确结果.     

材料疲劳试验数据中可疑观测值的计算及程序处理

介绍了材料疲劳试验数据中可疑观测值的判断原理,并设计了一种用于计算材料试验数据中可疑观测值的软件。该软件使用Visual C#语言编写,可以从试验数据中挑选出可疑观测值,并能计算出平均值和标准差等数据,计算完成后输出显示可疑观测值及其在数据组中的具体位置,最后用实际测试数据对软件的功能和计算准确性进行了验证。结果表明：该软件计算结果准确,使用方便、灵活,提高了材料疲劳试验数据的处理效率;该软件也可用于材料其他试验数据中可疑观测值的计算。     

基于UG的形位误差分析与计算

本文提出一种新的形位误差分析计算方法 ,该方法不需要编写软件 ,而是借助成熟软件———UG ,通过发挥人和该软件共同的作用对形位误差进行分析和计算。文章中介绍了该方法的原理和进行分析计算的步骤 ,并通过实例进行验证     

复合材料破坏数据B基准值计算的程序设计

采用Visual C#语言编写了复合材料B基准值的计算软件,该软件可以从试验数据中先挑选出可疑值并计算B基准值、Cv变异系数、分布形式、平均值、最大值和最小值等;计算完成后可以自动输出各种需要的试验记录表,软件使用方便、灵活,提高了试验数据的处理效率。     

铝筒拉深模的参数化CAD

给出了开发铝筒拉深模参数化计算机辅助设计软件的思路.应用该软件,可以通过人机对话方式输入铝筒的相关参数,自动完成铝筒拉深模的理论计算和绘图.显著提高了设计质量和效率.     

气体喷射器设计计算及软件开发

为了提高气体喷射器的设计效率,基于经典的气体动力学函数法并结合国内外优秀的设计模型,对喷射器结构尺寸计算方法进行系统的梳理总结,并利用VB.NET开发出一套气体喷射器设计软件。该软件由输入输出模块、参数计算模块、结构设计模块和性能曲线绘制模块等组成。本软件适用范围较广,不仅能对三种常见压缩比的同相气体喷射器进行设计计算,还考虑了气液及气固两种异相喷射器,大大丰富了软件的使用范围。软件界面简洁,操作方便,采用本软件可以大大缩短设计周期,提高设计效率和计算的准确性。     

螺桨转子颤振涡动分析及其程序设计

螺桨转子颤振涡动分析软件（ＰＰＷＦＡ）的设计目的是，分析螺桨转于系统的动力响应和颤振涡动特性，以及分析影响螺桨转子稳定性的各个因素。该软件考虑桨叶的振动变形，桨轴一支承系统的振动特性，以及螺桨转子的不平衡力。通过对一模型螺桨转子系统的计算分析，对软件进行了考核，计算结果与风洞试验结果作了比较，证明软件的设计及计算是正确的。文中还给出了对一实际螺桨转子系统的颤振涡动计算结果。本文是该软件设计和计算工作的技术总结，并对软件的功能和性能等作一介绍。     

用于水产冷库的计算机辅助设计软件

本文介绍了一款专门用于水产冷库设计的软件。此软件由Visual Basic 6．0编程语言及Access数据库编程工具开发而成。该软件功能包括：冷库各冷间负荷计算、冷却设备负荷计算、压缩机负荷计算以及整个制冷系统主要设备的选型计算及选型。结合算例,说明该软件具有界面良好、计算简便准确和实用性强的特点,是水产冷库的方便快捷的设计工具。     

用CFD方法指导通风空调设计

本文给出了计算通风空调房间温度、速度分布所需的微分方程,湍流部分采用新的零方程模型,根椐SIMPLE算法开发出计算通风空调房间风速、温度分布的软件STACH-3.在利用文献中的实验资料验证该软件的基础上,对一个置换通风的例子,利用该软件预测房间内的温度场、速度场,从而指导通风空调的工程设计.     

基于VC＋＋6．0的空气状态参数计算软件的开发

分析了空气状态参数的计算方法，确定了17种独立的参数组合，并利用VC＋＋6．0开发了空气状态参数计算软件。该软件操作简便，运行稳定，能够实现各参数数值的计算与输出，大大提高了工作效率和工程设计的精度。     

关于软件可靠性测试的若干问题

软件可靠性测试是软件测试的一种形式,它强调软件测试与软件可靠性之间的定量关系,旨在定量改进和评估软件可靠性。从数学角度严格量化软件测试与软件可靠性之间的关系是一件困难的事情。本文举例说明软件可靠性测试中的几个问题,包括软件缺陷的估计、软件测试过程的数学建模、以及软件可靠度的最优估计等。由此可知,软件可靠性测试涉及到不同领域的知识和多种数学工具。     

Empirical Analysis of Software Success Rate Forecasting During Requirement Engineering Processes

Forecasting on success or failure of software has become an interesting and, in fact, an essential task in the software development industry. In order to explore the latest data on successes and failures, this research focused on certain questions such as is early phase of the software development life cycle better than later phases in predicting software success and avoiding high rework? What human factors contribute to success or failure of a software? What software practices are used by the industry practitioners to achieve high quality of software in their day-to-day work? In order to conduct this empirical analysis a total of 104 practitioners were recruited to determine how human factors, misinterpretation, and miscommunication of requirements and decision-making processes play their roles in software success forecasting. We discussed a potential relationship between forecasting of software success or failure and the development processes. We noticed that experienced participants had more confidence in their practices and responded to the questionnaire in this empirical study, and they were more likely to rate software success forecasting linking to the development processes. Our analysis also shows that cognitive bias is the central human factor that negatively affects forecasting of software success rate. The results of this empirical study also validated that requirements’ misinterpretation and miscommunication were the main causes behind software systems’ failure. It has been seen that reliable, relevant, and trustworthy sources of information help in decision-making to predict software systems’ success in the software industry. This empirical study highlights a need for other software practitioners to avoid such bias while working on software projects. Future investigation can be performed to identify the other human factors that may impact software systems’ success.     

故障诊断专家系统软件的测试

提高软件可靠性的关键是力求减少软件中的错误。软件的错误可能来源于软件寿命周期内的各个阶段,测试工作在软件生存期中占有重要位置。本文主要讨论一个自行高炮故障诊断专家系统软件的测试。文中介绍了该软件的功能、组成、故障分离过程和测试方法。通过该软件测试的运行,以期达到减少软件中的错误,提高软件可靠性,有效地解决现代军事装备的复杂性同管理体系,人员素质之间的矛盾。     

A software cost model with warranty cost, error removal times and risk costs

In this paper, a software cost model with a warranty period and cost, a cost to remove each error detected in the software and a risk cost due to software failure is developed. A software reliability model based on the nonhomogeneous Poisson process is used. The optimal release policies which minimize the expected total software costs are presented. A software tool is also developed using Excel and Visual Basic that facilitates the task of determining the optimal software release time. Numerical examples are provided to illustrate the results.     

Editorial - Software language engineering

Software languages play an important role in software development. Software languages are the artificial languages that are used to describe software systems at various abstraction levels. They are applied to describe requirements and designs for software, definitions of software architectures, and implementations of software systems. A huge variety of different technological spaces exist to describe languages: programming languages, software modeling languages, data modeling languages, domain-specific languages, ontology language, and others.     

Modular generic software system for cellular FMS

The development of complex, flexible manufacturing systems (FMS) is very much dependent on the development of the associated control software. Because of the complexity involved, reliable and quality FMS software with comprehensive functionality and sophistication is difficult to design, implement and maintain. This paper proposes a modular, generic software system. Using the software developed, a range of cellular FMS (CFMS) control software can be generated from a library of well-defined software building blocks. This paper also describes the design of a generic software architecture, covering specifications for the control architecture, controller structure and software platform. Application of the building block concept has addressed the CFMS software problem effectively and the resulting software possesses a high degree of modularity and flexibility.     

软件测试技术研究

目的 研究软件测试技术，并给出一种软件测试模型。方法 分析了软件测试技术，并结合传统的测试方法，针对面向对象技术新特性在测试中引发的问题，提出了一种测试模型。结果 给出了一种面向对象软件的测试模型。结论 该测试模型可以方便地面向对象软件进行测试。     

Design fault tolerance

Typical software fault tolerance techniques are modeled on successful hardware fault tolerance techniques. The software fault tolerance techniques rely on design redundancy to tolerate residual design faults in the software; the hardware fault tolerance techniques rely on component redundancy to tolerate physical degradation in the hardware. Investigations of design redundant software have revealed difficulties in adapting the hardware strategy to software.We survey three categories of issues: (1) practical issues in the implementation of design-redundant software, (2) economic considerations for the development and maintenance of multiple software implementations, and (3) assessment difficulties in measuring and predicting the performance of design-redundant software. All of these issues should be considered by would- be developers of design-redundant software to justify use of the technique.     

我国软件与系统工程标准化研究综述

软件工程将工程化的思想贯穿到软件的分析、设计、实现和维护的生存周期全过程,涵盖完成一个软件产品所必备的思想、理论、方法、技术、工具和环境.软件工程标准化通过制定、贯彻并监督实施标准,规范软件工程过程和方法,提高软件产品质量和工作效率,对软件行业的发展起着举足轻重的作用.本文对软件工程及标准化情况进行综述,并对软件工程重点领域的发展和标准化趋势进行分析总结.首先,本文总结软件工程的发展历程,对软件工程发展各阶段的技术和标准化重点进行分析,然后通过对国际标准和我国标准进行对比,剖析出我国软件工程及软件工程标准化情况,最后归纳总结我国软件工程标准化现存的问题和下一步研究工作的重点.     

架构和模式在水声信息流仿真软件中的应用

水声信息流仿真软件系统涉及多目标、多声纳以及多变的海洋环境．仿真软件的复用性是现代软件工程的重要性能指标．针对系统开放性的特点，在领域分析模型的基础上，采用了面向对象方法设计仿真软件模型．为了满足软件多层次复用的需求，应用软件架构技术和设计模式设计仿真软件．根据水声信息流仿真软件需求，系统划分为四层结构；按功能，层又可分解为包．可复用的设计模式用于设计不同层和包中类之间的关系．提出的仿真软件模型具有良好的可扩充性与可复用性．