Object-oriented DBMS requirements

The requirements on an object-oriented DBMS for management of information in a large, complex enterprise are presented. These requirements aid in the achievement of an environment characterized by data sharing, open architectures, application and data portability, and assurance of data integrity. They were defined from the point of view of a user of the DBMS; therefore they describe the expected functionality of the DBMS and do not specify the method of implementation to achieve this functionality. They encompass requirements on the data model, query and data manipulation languages, the system architecure, interfaces to the system, change management, and transaction management.     

Automatic generation of IDEF0 models

This paper looks into a new area for knowledge-based system application, that of manufacturing modelling. Manual generation of IDEF0 models of manufacturing systems is time-consuming and inconsistent. However, the process can be automated to improve timeliness and consistency. In this paper, a knowledge-based manufacturing modelling system for the automatic generation of IDEF0 models is proposed. The system will not only greatly reduce the IDEF0 modelling time but will also eliminate the inconsistency problem of conventional IDEF0 modelling systems. The paper explains the knowledge-based approach and identifies the kinds of domain knowledge that are required for the construction of the knowledge-based manufacturing modelling system.     

IDEF0与CPN的自动转换方法研究

在大型工程系统的建模与分析中,将系统的静态IDEF0模型转换为动态CPN模型的方法得到大量的应用,但是人工转换既繁琐也容易出错。该文在IDEF0和CPN模型的形式化表示分析的基础上,提出两种模型自动转换的一般步骤和方法。     

并行企业运作--基于并行工程的过程企业管理

针对过程企业,基于并行工程的思想,提出了过程企业运作管理的新思想--并行企业运作,并采用IDEFO(ICAM Defintion)功能建模方法,建立了集成并行的业务过程模型,在每个业务过程内部采用"监控-决策-执行"的实时信息反馈系统,以实现企业各业务过程之间的信息交互与资源共享.     

应用软件工程学方法开发智能注塑模CAD／CAM系统

详述了应用软件工程学方法开发注塑模ＣＡＤ／ＣＡＭ系统软件的过程，利用结构化分析与设计思想，建立了注塑模ＣＡＤ／ＣＡＭ系统的ＩＤＥＦ０功能模型。并应用智能技术中的ＣＢＲ方法来辅助实现系统的决策过程，分析了系统设计中的一系列问题。整个系统体现了一种具有生长命周期和新的软件设计思想。     

基于IDEF和UML的进销存系统设计与开发

采用IDEF与UML结合的建模方法对企业进销存系统进行了分析．即用IDEF0模型进行系统需求分析,用IDEFIX模型指导关系型数据库系统的建立．用UML模型进行面向对象的软件系统设计。根据该模型开发的基于组件的进销存系统具有良好的可配置性、可扩展性和重用性,该系统在某化工企业进行了实施与应用。具有操作性强、成本低、效率高的优点。     

基于扩展IDEF3方法的作战任务描述及效能评估

针对部队作战过程建模复杂、作战效能评估困难的研究现状,提出了一种基于扩展IDEF3的作战任务建模及效能评估方法.在定义部队作战相关概念的基础上,引入了作战行动效能扩充行为单元的描述属性.通过作战任务的分解和"串并联"模型框架的计算方法,对部队作战的具体过程进行形式化描述,给出了部队针对特定任务的作战效能评估方法.最后以某防空旅执行防空任务为实例进行了说明,研究表明将该方法应用于部队作战效能的评估是有效的.     

基于 IDEF 建模的农产品信息系统信息流转模式

高效的农产品信息系统信息流转模式可提供高质量信息服务,使农产品信息系统得到有效开发与利用。本文研究了IDEF建模方法的优势,并将其应用于农产品信息流转模式及其信息分析研究中,提出一种系统的、动态的、高效的农产品信息流转模式,并对模式的信息流能力进行了相应的分析,从而为农产品信息系统构建开拓思路。     

Design mechanisms and constraints

This paper describes a model of design, which takes a different perspective in that it emphasises mechanisms and constraints. The model accommodates design-related activities from the enterprise level through to activities of individuals (e.g. decision-making processes), and provides a holistic treatment of existing design methods. It is suggested that the output of a design stage is not so much the input to the next, as the provider of constraints. Consequently, the creative component of design is not concentrated in one task, with the others being technician tasks: instead each of the tasks augments the design in a creative way. A degree of commonality was observed across different domains and stages of design, which leads to the proposal of a generic design activity (GDA), that can be used in diverse design situations. Sub-activities within the GDA were identified as the generation of candidate solutions, solution assessment, solution selection, implementation, and retrieval of design intent. It is suggested that one of the limitations of many design tools, especially artificial intelligence, is the reliance on on complete problem and constraint specification. In real situations, designers have to determine constraints from incomplete and qualitative specifications, using subjective processes. Furthermore, they subsequently have to negotiate with others for the relaxation of constraints, as the design space may be over-constrained. This negotiation involves interaction with others, and adds the organisational behaviour factors to the design process. Decision-making during design needs to be able to accommodate multiple viewpoints, cope with uncertainty of analysis (incompleteness of knowledge), propagate uncertain variables, and accommodate varying degrees of information abstraction. Other areas of design that may benefit for additional research are identified. This work was performed at the Department of Mechanical Engineering, University of Canterbury, New Zealand. Submitted to Research in Engineering Design     

基于IDEF0的CIMS底层控制Petri网模型的自动生成方法

IDEF0广泛用于CIMS的功能说明,Petri网适用于对离散事件动态系统建模.在 CIMS中,两者结合起来,对于CIMS底层控制、生产调度、动态仿真都具有重要意义.文中研 究了IDEF0的形式化描述方法,讨论了有关概念,给出了由IDEF0生成Petri网的形式化方 法,并用一例说明其整体思想.