基于重用方法的软件开发环境

软件重用方法是提高软件生产率和质量、缓解软件危机的重要手段 .实施该方法的关键是提供一个帮助开发者实现软件重用的支撑环境 .为此 ,我们在 SUN工作站上设计并实现了一个基于可重用性的软件开发环境 RSDE.本文介绍了该环境的设计、实现和特点     

开放式数控系统域建模研究

域工程是解决系统抽象设计的有效手段,本文从这个角度,探讨了开放式数控体系结构的建模方法并对轴控制为例为加以体阐述。     

Merging potentially inconsistent items of structured text

Structured text is a general concept that is implicit in a variety of approaches to handling information. Syntactically, an item of structured text is a number of grammatically simple phrases together with a semantic label for each phrase. Items of structured text may be nested within larger items of structured text. The semantic labels in a structured text are meant to parameterize a stereotypical situation, and so a particular item of structured text is an instance of that stereotypical situation. Much information is potentially available as structured text including tagged text in XML, text in relational and object-oriented databases, and the output from information extraction systems in the form of instantiated templates. In this paper, we formalize the concept of structured text, and then focus on how we can identify inconsistency in the logical representation of items of structured text. We then present a new framework for merging logical theories that can be employed to merge inconsistent items of structured text. To illustrate, we consider the problem of merging reports such as weather reports.     

并行工程环境下设计任务调度原理与实现方法的研究

并行工程ＣＥ环境下,设计任务被分解为若干子任务,然后进行协同求解,因此各子任务的调度是实现产 品并行设计的关键．该文提出了设计任务调度的“均衡一适度”法,分析了其调度策略,研究了其算法实现,最后给出 了应用实例。     

Re-engineering of the design process for concurrent engineering

According to the requirements of concurrent engineering, three interdependency relationships (uncoupled relationship, coupled relationship and decoupled relationship) between design activities are presented in this paper. And the coupled relationship plays an important role in concurrent product design process. To represent the precedence relationships among design activities, a directed graph is used to describe the design process. And the interdependency relationship between activities is illustrated by a Design Structure Matrix which is the transpose of the accessibility matrix of the corresponding graph. Using the DSM, an algorithm of recognizing the coupled activities during the design process is presented. Moreover, an algorithm to figure out the order levels of activities during the design process is proposed. And both algorithms are illustrated with a die design example.     

Knowledge-based system for telecontrol of anaerobic wastewater treatment plants

This paper describes the design and implementation of an intelligent real-time supervision system for the monitoring and control of wastewater treatment plants. The system presents a hybrid structure which integrates knowledge engineering techniques and methodologies (an expert system based on production rules embodying non-mathematical or semiquantitative knowledge of unit operation) and algorithmic process-related methods (data acquisition, signal preprocessing, calculation of plant operation parameters etc.). The fundamental design aspects consist of temporal information treatment, artifact detection and a client- server structure which allows the telesupervision of various plants by a central system.     

并行工程在汽车车身开发与制造上的应用

本文分析了常规车身ＣＡＤ／ＣＡＭ技术所存在的弊病,提出了采用并行工程的原理进行车身开发及车身工装设计与制造的方法。重点介绍了实施车身并行工程要解决的关键性技术,诸如建立集成化的产品数据模型、ＣＡＤ／ＣＡＰＰ／ＣＡＭ集成技术、建立多功能小组、计算机技术支持等。     

模型在土地利用总体规划中的应用研究

利用系统工程理论、方法结合现代计算机技术进行土地利用总线规划。通过建立综合预测模型、线性规划模型、模糊综合评价模型、模糊识别模型、模糊聚类进行土地利用总体规划工作,并且取得了较为满意的结果。研究中采纳了前人的一些成功经验并加以修改和应用。文中着重介绍了模型在土地利用总体规划中应用。     

面向Agent技术

Agent是继对象之后的一种重要软件抽象方法,面向Agent技术被认为是 网络时代计算机系统的基础。本文首先介绍了面向Agent技术的基本概念、观点、针对的问题、程序设计方法等内容,然后与面向对象技术作了对比分析,最后讨论了面向Agent技术的应用问题。     

运城地区可持续发展农业工程信息资料检索系统研究

采用 Win95操作系统 ,以 VB为开发工具 ,对运城地区农业工程信息进行快速检索并长期存储。该系统成本低、实用性强 ,人机交换界面使用方便 ,不需专业培训 ,为大型农业建设工程信息资料的检索和存储开辟了一条新的途径