The Research And Implementation Of Resources Systematic Organization In Grid Workflow E-learning System

With the development of information technology, e-Learning, as a new approach, has been accepted by more and more people gradually.The e-Learning system develops unceasingly consummates. Simultaneously, management of resources and the request of operation of flow controlling are getting higher and higher. The existing information management technology cannot satisfy the wide range sharing of resources. The grid as the establishment above Internet's new generation infrastructure, is hoped to make the high speed Internet, the high performance computer, the large-scale database, the sensor, the long-distance equipment and so on merges into one organic whole, and make it is possible to use resources transparently. After proposed several years, it has been obtained the domestic and foreign researchers' widespread attention. Make the technology of grid and the technology of workflow unified, and realizes the reasonable management to the resources and the service, becomes the research hot spot in recent years. Take the grid workflow environment as e-Learning system's foundation environment is another big expansion to the grid applications, simultaneously is also the new mentality which proposed to the e-Learning system development.The content of this subject is the design and implementation of the key technologies of e-Learning system on grid workflow, it is the component of "The Key technologies Research of e-Learning Based on Grid", which belongs to State Ethnic Affairs Commission Foundation Project. Through the research of WRSF specifications, grid technology standard and the WS-BPEL flow description language, combine software engineering methods and the programming method of web service, analyze and realize a grid workflow engine--WF_Engine, finally design a management system of e-Learning based on the grid workflow. The main task of this paper is as follows:First, analyze the basic concept and characteristics of e-Learning system, analyze the WRSF technology standard, the system frame of grid workflow, the standard of WS-BPEL flow description language, the process of Installment and development based on the GT4, the process of development of grid service, which offer necessary theory and technical supporting researching the e-Learning system on grid workflow.Second, analyze the framework of grid workflow engine and the execution process of work flow, designe a grid workflow engine WF-Eninge according to the basic function and the basic modules relationship of workflow engine, and has realized this engine. Third, use the software engineering method to carry on the analysis based on the management system of e-Learning on grid workflow, designe system modules of management system of e-Learning that established on the grid workflow foundation environment.