【作者】 杨军；

【导师】 张玉芳；

【作者基本信息】 重庆大学 ， 计算机应用技术， 2007， 硕士

【摘要】 随着网络技术的不断发展,人们对于网络上的信息需求也在急剧增加。网格是强调自动化思想,强调“分布式协作”与“虚拟组织”概念,能实现网络资源高度共享的,提供大规模计算、良好互操作性的先进技术,同时也是未来的网络发展的主要方向。网格(Grid)在结合Web Service技术后,形成了开放网格服务体系结构OGSA(Open Grid Services Architecture)。OGSA将网格服务视为可扩充的集合,在OGSA中一切都是服务。它的出现使得网格的应用跳出了网格计算这个应用领域,在知识服务、智能代理、分布式协作等方面都有巨大的发展,使得像网络教育这类以从网络中获取信息为主的个人或组织能够轻松自如地从海量信息中摄取自己有用的信息,而不必关心诸如信息来源、冗余程度等问题。本文详细阐述了网格概念及网格服务的基本内容,探讨了OGSA的体系结构的基本内容和运行机理;描述了Web Service和网格服务的关系;并在探讨OGSA的运行机理的基础上秉着将网格服务应用于网络教育中的理念,采用知识网格技术、Web Service、网格服务技术、GT中间件技术在OGSA的基础上研究构架基于网格服务的知识服务网格体系结构;讨论了知识服务网格在网络教育中的应用意义,探讨了知识服务网格在网络教育中的应用模式,知识的表示,知识服务的建模过程,以及知识服务网格在网络教育中的运行过程。本文从理论体系上建立了知识服务网格在网络教育中的应用模式,为以后不断完善、发展该模式打下了基础,为实践应用指出了一个可行的方向。本文对于OGSA体系结构的研究工作是一次有意义的尝试。通过这次研究工作,验证了OGSA体系结构在实现网络虚拟环境上的资源共享和协同工作,消除信息孤岛和资源孤岛方面所具有的优势。虽然目前基于OGSA体系结构的网格应用还不成熟,网格服务的开发与部署方法还有待进一步的完善,但随着相关技术和应用的发展,OGSA体系结构的应用也将得到迅猛的发展。更多还原

【Abstract】 With the development of network technology, the demand for information on net is increasing rapidly. Grid’s development in the future aims at enabling people to share resources to highly degree, providing calculation on a large scale and easy operation technic with its emphasis on automation, cooperation in distributed system and virtual organization. Grid has formed Open Grid Services Architecture (OGSA) after combining Web Service technic. OGSA views Grid Service as sets can be enlarged, and all in OGSA is for service. The arrival of OGSA makes application of Grid go beyond the application field of Grid Computing, achieves great development in Knowledge Service, Intelligence Agent, cooperation in distributed system, which enable individual and organization mainly depended on aquiring information from Network to take in useful information from sbustancial information easily, without concerning about source of information and redundancy.This paper elaborates the concept of Grid basic content of Grid Service, describes OGSA systematic structure and running theory, and then proceeds to put forward Kowledge Service Sysmatic Structure based on Grid Service. It explores the application of this sysmatic structure to Network Education to really realize the freedom, intelligence, pracicality and humanity of knowledge service.This paper is a significant attempt at research work of OGSA systematic structure. This research tests and verifies the advatage of OGSA systematic structure in realizing sharing resources and cooperation under virtual environment, and eliminating isolation of information and resources. Although application of OGSA systematic structure is not ready, and the exploitation and distibution of Grid Service are waiting to be perfect, OGSA systematic structure will develop swiftly and violently with the development of related technic and application.更多还原