Modern Distance Education Platform Based On J2ee And Vrml

Modern distance education is a kind of new education method combining with modern information technical development; it has already become the trend with the international education development. Modern distance education platform is the base of realizing distance education, its performance and function determine the method,means,result and quality of distance education directly.The traditional distance education platform design does not follow certain technology standards, existing the "technology for technology" phenomenon. In addition, most existing distance education resources displays in writing and planar way, what it realized is a copy to original teaching materials. In this case, the learner obtains knowledge can not get away from the mechanical type studying. The emergence of VRML technology brings the distance education a new teaching means because of its little data to transfer and with vivid 3D pictures, providing a new technology support for deigning modern distance education platform.Based on the research and studying of the national information technology standard committee, who puts forward the CELTS-1 criterion. This article adopts the J2EE and VRML technology to design modern distance education platform, and realizes the main parts of it. The main research of work is as follows:(1) Using VRML technology, this article puts forward the Modern distance education platform based on the way of information deliver and the changes of the way that teachers and students communicate.(2) Contrasts and analyzes the prevail Web 3D technology, choosing the suitable development tool and the design mode and certain suitable design process.(3) Introduces the reason of combination of Java and VRML, studying the differences and similar about the combination.(4) Designs the Modern distance education platform based on J2EE and VRML according CELTS-1 criterion. Divides the platform into five parts, (containing teaching support system, teaching resources management system, educational administration management system, course design system and other systems), analyzing all the part of design destination and function.(5) Realizes the mainparts of modern distance education platform. This article lays emphases on the teaching video part in teaching support system,virtual classroom system and virtual experiment system. In addition, it realizes the teaching resources management system based on the project of "The construction of computer science and professional teaching resources".In the process of building modern distance education platform, this article applies some key technology and strategy:(1) Applies the role-dynamic state authorization mechanism into Modern distance education platform. Realizes the clear authorization management and higher flexibility and security.(2) Improves the project of "The construction of computer science and professional teaching resources" and introduces the secondary search of and related search strategy.(3) Designs the player imbeds the web page which can adapt playing in teaching video system. It can complete the playing task in practical use and test.(4) Applies fast-modeling method according to complications in the process of VRML, heighten the efficiency of practical modeling.(5) Classifies and sums up the technology of to animation the born technology building and the strategy of interaction, discussing the method and principle of each realization, getting applied in the process of designing virtual classroom and virtual experiment.(6) Discusses the way of optimize strategy based on 3D modeling of VRML technology finally.