Study on the grid technology and its application in modern distance education

As a typical case of information service grid in educational area,e-learning grid adopts grid technology to set up a distributed mass educational resource environment.Distance learning users treat this as a high data sharable and effective manageable virtual educational space.E-learning grid uses web service description language to describe system service.Combining the concept of learning-objects and characteristic of distance learning,system defines three grid services:learning-objects repository service, learning-objects storage-retrieval services and learning-objects Registry service.An experimental system with Linux multi-host of e-learning grid,which provides the service of user register-log in-usage-log out,illuminates the basic flow of e-learning grid.