复杂诊断系统的MAS协作求解方法

为适应故障诊断中动态变化的环境和满足求解复杂系统全部任务的要求,研究一种基于MAS的分布式智能监控系统.文中以诊断决策问题的结构及建模过程的层次性为基本思想,基于诊断任务的多层次混合分解策略,提出了融合不同表达方式和推理机制的多Agent并行诊断结构,分析了管理Agent、诊断Agent和决策Agent的基本职能,探讨了实时Agent的组织和演化机制,给出了并行推理过程中的冲突消解算法,建立了具有公共属性的智能体模块化层次结构,实现了基于MAS多层分布式黑板模型的智能监控系统.工程应用效果验证了多智能体结构框架下复杂系统分布式求解的可行性和有效性.     

领域化业务构件的数据模型可执行语义研究和实现

从企业应用角度出发,为实现快速构建企业信息系统以及提高系统可重用性,提出了一种领域化业务构件描述思路。同时为使开发的信息系统实现企业知识的重用和和共享,方便企业数据交换和集成,将可执行语义建模方法应用到业务构件的业务数据模型中,具体实现参考了语义Web的描述框架。     

基于SFT,CPN和移动Agent的分布式入侵检测系统

移动Agent入侵检测系统(Mobile Agent Intrusion Detection System,MAIDS)是一种基于Agent的入侵检测系统。对MAIDS的描述采用SFT到CPN的转化首先用SFT(Software Fault Tree)描述入侵行为,然后将SFT转化为CPN(Colors Petri Nets)以建立入侵行为的描述模板,最后转化成分布式Agent的实现。基于SFT、CPN和移动Agent的分布式入侵检测系统具有错误少、数据量小等优点。     

基于组态技术的软件构件组装框架

通过对软件构件组装技术的研究,结合组态技术提出了一个可视化的软件构件组装框架。解决了构件组装过程中存在的异构问题、分布式问题和组装复杂性问题,实现了跨平台的软件构件组装。通过标准的元适配器构件,摆脱了构件代码连接方法的缺陷,实现了完全构件化的软件构件组装。     

面向智能Agent的软件技术研究

智能Agent技术已成为分布式人工智能领域研究的重点课题,文章介绍了面向Agent的软件技术的基本内容,探讨了Agent程序设计框架和语言解释器的基本结构,并展望了智能Agent技术的发展趋势。     

基于多智能体的分布式智能诊断方法研究

在传统智能诊断基础上，将多Agent技术应用于动态、分布、实时和不确定的复杂系统故障诊断领域，以求解复杂过程诊断问题．提出了基于MAS的分布式智能故障诊断方法和过程；讨论了基于模式聚类的故障求解机制及对诊断问题任务的辨识、分解；研究了多Agent的约束和关联；设计了应用Agent工作状态的表达机制；确定了应用Agent间的工作状态影响关系及多Agent间的交互、协作和通讯；构建了多Agent模糊关联模型；给出了多Agent诊断系统局部诊断决策与全局诊断决策的集成描述结构：实现了一种分布式Agent诊断系统结构及其原型系统．工程应用表明，该系统能快速、准确地进行故障成因分析，并给出有效的决策意见，取得了与专家相似的诊断结果．     

基于Agent的分布式空间数据挖掘研究

在分析数据挖掘、空间数据挖掘、Agent的概念和技术特点的基础上,提出了一种基于代理的分布式空间数据挖掘模型,描述了分布式数据挖掘中协调器、数据挖掘代理、数据库和用户之间的通信、程序调用和代码迁移等实现方法.     

一种基于动态语境组装的分布式构件框架的设计与实现

 提出一种新的分布式构件框架ACF,在传统的以共享协同信息为主的语境机制基础上,引入了共享协同对象的动态语境机制,直接支持基于运行时软件体系结构的协同逻辑的表达和动态演化.该构件框架已在集成开发环境Artemis Studio中得到初步实现和应用.     

基于Mobile Agent的无线传感器网络管理框架

无线传感器网络是一种全新的技术,能够广泛应用于恶劣环境和军事领域.为解决数据从节点到处理中心过程中传输耗能大,节点的电池能量消耗不均衡等问题,文章提出了一种基于Mobile Agent的管理框架,并根据这个管理框架设计实现了Mobile Agent服务管理中心和Mobile Agent实体.实验表明,此框架能有效减少和平衡能量消耗.     

分层技术在计算机软件开发中的应用分析

计算机软件开发的分层架构设计,是基于Wright、MVC、SpringCloud等的框架结构,对整个计算机软件架构、功能实现,作出分布式设计、组件添加与调整,实现基于分层构件的计算机软件开发,提升软件开发复用率、降低开发成本。通过针对不同计算机软件的应用需求,选择合适的软件开发技术框架、构件设计标准,进行分层化的软件开发、功能构件化设计,并对软件构件作出组装、功能测试,可充分保障完成系统软件开发、构件组装与实现。     

Web上分布式领域组件的框架表示

文章采用知识表示中的框架表示法,结合谓词产生式,语义网络等手段,提出了一个具有网络分布式及Ｗｅｂ化构造特性的领域构架及组件的表示方法ＦＲＤＤＣ。应用ＦＲＤＤＣ实现的ＡＮＤ－ＣＡＳＥ模型表现了ＦＲＤＤＣ的自然性,结构性,Ｗｅｂ可操作性,容纳柔性及知识表达能力。     

Building holonic supply chain management systems: an e-logistics application for the telephone manufacturing industry

As an exercise in agent-based software engineering, this work proposes a holonic model for the domain of supply chain management. The supply chain system is a distributed infrastructure that enforces protocol rules and through which agents registered on a domain find each other, access the knowledge base, communicate (exchange messages), and negotiate with other agents, which are independent entities with specific goals and resources. It is considered that individual resources that belong to each agent are not sufficient to satisfy their goals; therefore, the agents must procure the needed resources from other agents present in the system through negotiation. Our approach is based on the holonic enterprise model with the Foundation for Intelligent Physical Agents (FIPA) Contract Net protocols applied within different levels of the supply chain holarchy. To accommodate differentiation of interests and provide an allocation of resources throughout the supply chain holarchy, we use nested protocols as interaction mechanisms among agents. Agents are interacting through a price system embedded into specific protocols. The negotiation on prices is made possible by the implementation of an XML rule-based system that is also flexible in terms of configuration and can provide portable data across networks.     

基于领域工程的特种作战指挥系统建模研究

在领域工程理论的指导下,通过分析研究特种作战自动化指挥领域各业务领域的特点,采用面向特征的领域分析方法,结合面向对象的软件设计思想,得出了该领域的可继承和研究的共用和业务通用构件及系统集成模型框架。阐述了特种作战自动化指挥领域分析模型、领域设计模型和领域实现模型的建模过程及各阶段建模目标,介绍了选用的建模工具及模型的表示方法。     

一体化航天测控软件框架研究与关键技术

提高测控软件的实时性、可靠性、可重用性和安全性已成为航天测控通信系统研究与发展中的重要研究课题。探讨了目前航天测控软件存在的不良现状,阐述了建立一体化航天测控软件框架的重要意义;介绍了欧空局任务控制软件框架的设计策略、体系框架和研究进展;提出了一体化航天测控软件框架研究的总体目标和软件框架参考模型;分析了软件框架研究在平台无关性设计、组件/构件集成技术、异构系统间互操作技术、安全技术、可靠性技术、协同工作与调度技术和软件总体技术等方面需要突破的关键技术。     

A framework for building intelligent manufacturing systems

The paper describes a systematic approach to design and development of software for intelligent manufacturing systems. The approach is based on a multilevel, general object oriented model of intelligent systems. Current methods and software design and development tools for intelligent manufacturing systems either stress particular components of intelligence (e.g., high level domain expertise, or learning capabilities, or fuzziness of decisions), or their domain dependence (e.g., monitoring and control systems, or CAPP systems). It is usually difficult to make extensions of such methods and tools, nor is it easy to reuse their components in developing intelligent manufacturing systems. Considerable efforts are being dedicated to the development of interoperable software components, distributed object environments, and flexible and scalable applications to overcome some of these problems. The approach described in the paper starts with a well founded software engineering principle, making clear distinction between generic, low level intelligent software components, and domain-dependent, high level components of an intelligent manufacturing system. It is extensible and adjustable. It also suggests some steps toward design of future software development tools for intelligent manufacturing systems. Several intelligent systems have been developed using the approach. One of these systems, in the cement manufacturing domain, is briefly overviewed, illustrating how the approach is used in practice. Finally, some informal discussion on the performance and complexity of the approach is presented     

A hierarchical distributed control model for coordinating intelligent systems

This paper describes a hierarchical distributed control (HDC) model for coordinating cooperative problem-solving among intelligent systems. The model was implemented using SOCIAL^TM, an innovative object-oriented tool for integrating heterogeneous, distributed software systems. SOCIAL embeds applications in “wrapper” objects called Agents, which supply predefined capabilities for distributed communication, control, data specification and translation. The HDC model is realized in SOCIAL as a “Manager” Agent that coordinates interactions among application Agents. The HDC-Manager indexes the capabilities of application Agents; routes request messages to suitable server Agents; and stores results in a commonly accessible “bulletin board.” This centralized control model is illustrated in a fault-diagnosis application for launch operations support of the Space Shuttle fleet at the NASA Kennedy Space Center.     

基于Agent的模糊控制器机理研究

提出了基于Agent的模糊控制器，定义了概念模型和组成结构。Agent具有自己的目标、意图和信念，能对外界进行预测。多个Agent之间协商合作进行模糊推理，增强了系统的稳定性和适应性。利用L*语言对Agent的心智状态进行了形式化描述，阐明了模糊推理Agent的模糊推理过程。给出了模糊推理Agent之间进行通信的规约。用VC十十定义了模糊推理Agent的COM组件模型。     

A Method and Tool for Identifying Domain Components Using Object Usage Information

To enhance the productivity of software development and accelerate time to market, software developers have recently paid more attention to a component‐based development (CBD) approach due to the benefits of component reuse. Among CBD processes, the identification of reusable components is a key but difficult process. Currently, component identification depends mainly on the intuition and experience of domain experts. In addition, there are few systematic methods or tools for component identification that enable domain experts to identify reusable components. This paper presents a systematic method and its tool called a component identifier that identifies software components by using object‐oriented domain information, namely, use case models, domain object models, and sequence diagrams. To illustrate our method, we use the component identifier to identify candidates of reusable components from the object‐oriented domain models of a banking system. The component identifier enables domain experts to easily identify reusable components by assisting and automating identification processes in an earlier development phase.     

一种基于人耳掩蔽效应的DCT域音频水印

文中提出了一种基于听觉掩蔽效应的DCT域音频水印算法.首先根据人耳听觉系统的心理声学模型估算每帧音频数据的掩蔽阈值,然后利用量化的思想将水印信号自适应地嵌入到掩蔽阈值以下的频率分量所对应的DCT域系数中.仿真实验结果表明:与传统DFT方法相比,该算法具有更好的透明性和鲁棒性.     

基于软件产品线技术的软件雷达

软件雷达是软件无线电技术在雷达领域的扩展。随着现代电子器件性能的提高,硬件平台的性能将不再是制约软件雷达发展的条件,它意味着通过先进的软件工程技术以提高雷达软件部分的开发效率和质量。但是当前软件雷达领域的研究仍停留在硬件平台的实现上,而利用软件工程中的先进技术提高雷达系统的开发效率和可靠性在目前研究的很少。文中分析了软件工程理论在软件雷达开发过程中的作用,并将软件产品线技术引入到雷达系统软件开发过程中。对雷达系统进行领域工程建模,生成了领域分析模型和领域体系结构,用于指导后续的领域设计与代码实现。在软件雷达开发过程中使用软件产品线技术,可以充分复用雷达系统的开发过程、需求分析、软件体系结构和领域构件等,有效提高雷达系统的开发效率和软件质量。