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基于Internet的远程控制实验室研究   总被引:12,自引:0,他引:12  
工科院校实验教学是培养学生专业素质的重要手段,基于Internet的远程控制实验室建设可能是解决学生数量多、实验室建设经费不足的有效途径.在详细分析了虚拟实验室、远程实验室和真实实验室的优缺点和目前国内外远程实验室存在的问题后,提出了远程实验室系统的功能需求,描述了远程实验室的系统体系结构和远程控制实验步骤,并分析了几种控制回路的特点和实现方法,最后,简要介绍了一个基于Internet的远程过程控制实验室的设计实例.  相似文献
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基于用户功能需求的知识网的自动生成研究   总被引:6,自引:1,他引:5  
薛朝改  严洪森 《控制与决策》2005,20(9):996-1001
研究了基于用户功能需求的知识网自动生成方法.首先,定义了知识网对用户需求的满意度关系及其运算,建立了知识网多重集运算表达式优化的模型;然后,基于改进的混合遗传算法,对知识网多重集表达式进行优化,给出了知识网自动生成的步骤;最后,通过算例对知识网自动生成方法进行说明和验证,表明了该方法的有效性和可行性.  相似文献
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Product definition has been recognized as one of the deciding factors in designing a product for success in the marketplace. This paper introduces an approach to product definition by evolving from similar existing products. Our methodology is derived from recognizing functional requirement (FR) patterns from past design efforts including FR topology, FR classification, and FR templates. A two-phase methodology of FR pattern recognition and pattern adoption is presented in the paper. The proposed approach not only eases the tedious elaboration process of requirement definition among customers, marketers, and designers, but also reduces the complexities and risks inherent in requirement specification. Furthermore, it opens opportunities for incorporating expert heuristics into FR patterns based on competitive products and technological trends. A case study conducted in power supply design helps to illustrate the feasibility and potential of the proposed approach.  相似文献
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Presentation and exchange of business models with CIMOSA-XML   总被引:4,自引:0,他引:4  
In the modern competitive business world there is a frequent need for enterprises to modify their structure of business processes to become more effective in the market place. The solution to this management demand is an improved business integration which is only successful when it is supported by effective IT systems. The Esprit project PRIMA aims to create a competitive advantage for European companies in the process sector by providing a route to ‘smarter' IT investments that are effective across the whole enterprise. A process repository which will store business process models in suitable formats would provide users with appropriate views of the models, focusing only on their information needs. However, the existence of many incompatible modelling methodologies and tools makes it impossible to unify the modelling approach. Therefore it would be desirable to have a high level common modelling language. The PRIMA project has identified CIMOSA as the basis for common semantics of the business model language and the XML format, as a suitable format for the transfer of the model structure and content. The PRIMA working group, in an effort to elaborate these concepts, has developed the Document Type Definition concept (DTD) of the CIMOSA-XML meta-model, which can be used to build the partial enterprise models related to the Business Functional Requirements (BFR) of the PRIMA Process Methodology.  相似文献
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需求分析与获取的方法学与技术   总被引:3,自引:0,他引:3  
本文给出需求工程的一般框架,在对需求分类的基础上主要讨论非功能性(即非行为性)需求,提出对软件需求规范和分析技术的要求,并强调对现有相关工作评价的其中两个方面。  相似文献
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一种获得形式化功能需求的方法   总被引:3,自引:0,他引:3  
用例图在面向对象的软件开发过程中起着重要的作用。它用于描述系统的功能需求 ,但是它缺乏如Object -Z形式规格说明语言的精确性。本文结合一个实例给出了一种如何使用UML捕获系统的功能需求 ,并将该功能需求形式化的方法。本文定义了从UML用例图到Object -Z的转换规则 ,实现了用例图的形式化、获得了形式化的功能需求。  相似文献
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A goal-driven and agent-based requirements engineering framework*   总被引:2,自引:0,他引:2  
The paper presents a requirements engineering framework (REF), where advanced requirements engineering techniques are combined with software quality modelling approaches to provide an environment within which the stakeholders and the analysts can easily cooperate to discover, organise, reconcile and validate the requirements for a new system. By adopting a basic and essential graphical notation, and a clear top-down methodology, REF allows for an effective involvement of the stakeholders, assisting and driving them to an early definition of the desired system's functionalities and quality attributes, while supporting the redesign of the encompassing organisational context to better exploit the new system's capabilities. As a case study, REF is applied to support the requirements engineering process for a complex software-intensive simulation system. Results demonstrate the feasibility of REF and the benefits it offers to the requirements engineering process, but also to the subsequent system development phases. As illustrated through the case study REF can, in fact, be usefully applied as a forerunner for unified modelling language (UML)-based approaches.*Part of this work was completed while the author was Senior Research Fellow with the Computing Information Systems Engineering Group, at the Royal Military College of Science, Cranfield University (UK)  相似文献
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基于用例驱动分析的软件需求获取方法   总被引:2,自引:0,他引:2  
用例驱动方法是当前国际流行的软件开发过程之一 ,软件开发所有阶段的活动都是以用例为核心。本文在对软件需求进行层次划分的基础上 ,探讨了一个以用户为中心 ,使用用例驱动分析技术依据用户目标获取不同层次的软件需求的过程。  相似文献
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