【作者】 寇丽君；

【导师】 李冠宇；

【作者基本信息】 大连海事大学 ， 计算机应用技术， 2006， 硕士

【摘要】 软件agent技术是为了解决复杂、动态、分布式智能应用而提供的一种新的计算手段。移动agent是特殊的可以有效的节省网络资源的agent,随着分布式应用系统在规模、复杂程度、分布空间等方面的迅速增长,分布式应用系统对网络服务提出了更高的要求。 本文研究建立在项目组自主研发的基于CORBA的分布式异构数据集成原型系统SORE(Simplified Object Repository)的基础上,但是由于CORBA要用到大量的网络调用,会产生一个结构虽好,运行性能却较差的模型,为了突破CORBA固有的这一缺陷,为集成后的系统提供更好的网络运行性能,借鉴国内外目前的相关技术和研究成果,结合移动agent与CORBA技术,设计了一种基于移动agent的改进的M-SORE原型系统,旨在为异构数据集成系统中提供高性能、高可用性的网络服务。 实验证明:设计和实现的M-SORE系统能够与原有的基于CORBA的SORE系统无缝衔接,系统稳定性较好,对复杂的网络环境具有良好的适应性,当网络不稳定或者网络带宽不足时,系统仍能可靠、高效运行。 本文主要包括七个部分:第一部分介绍论文的选题背景意义以及主要的研究内容:第二部分分析移动agent技术的研究现状及优势;第三部分全面分析应用IBM Aglet进行编程的核心:迁移机制和消息机制等;第四部分分析SORE系统,采用移动agent的意义,最后给出了结合移动agent的改进的M-SORE体系结构设计;第五部分详细分析了结合移动agent的方案并且讨论了模型中ARB总线的详细内容;第六部分M-SORE原型系统实现,为了证明可行性,进行了实验,介绍实验过程并给出实验结果。第七部分结论与展望。客观的评价本论文中提出的方法的优点与不足,并指出未来的工作。更多还原

【Abstract】 The software agent technology is a kind of new calculation method to solve complex, dynamic, distributed intelligence application. Mobile agent is a special kind of agent which can save resources of the network effectively. With the rapid growth of the distributed application system in such respects as the scale, complexity, distributive space etc, the distributed application system has put forward higher demand for the network service.The research acts on the existing Heterogeneous Data Integration Prototype System (SORE) based on CORBA , but since CORBA has to use plenty of networks, which produces a model of good structure but poor running performance. In order to overcome the inherent disadvantages and provide better net running performance, reference to research accomplishment and the related technology nowadays,by combining Mobile Agent with CORBA,the advance edition named M-SORE is designed.And offer the networks of high performance , high usability service for the Heterogeneous Data Integration System.Experiment proof: I design and realize an advanced version to SORE named M-SORE .The M-SORE system can join with the original SORE system based on CORBA without seam, the stability of it is better, and it has good adaptability for complex network environment, when the network is unsteady or network bandwidth is below, the new system can be reliable, runs efficiently also.The paper includes 7 parts mainly: In the first part, it is introduced that the background of project, application prospect and meaning, my major job in the research course;Second part: Analyze the advantages and present research of Mobile Agent technology;Third part: Analyze IBM Aglet which is carried out as the core ofprogramming: mobility method and message method etc.;Forth part: Analyze SORE system,the meaning of adopting Mobile Agent, propose the architecture of advanced M-SORE with Mobile Agent;The part of 5th analyses the scheme of combining Mobile Agent and CORBA in detail, and discuss ARB bus architecture;The 6th part: M-SORE prototype system implements,introduces experiment procedure and print experiment result. The last part is conclusion and prospect. Evaluate the advantages and disadvantages of the new method, and point out future work in the part.更多还原