可互用E-learning系统三层结构及内容共享

互用性是E-learning系统与其他应用相集成以实现数据共享和重用的关键因素。为了充分利用互联网上大量的信息资源,发掘和进一步创建出可重用的和自适应的学习内容,需要设计出新的E-learning系统结构来支持以上功能。文章提出了一种开放式的E-learning三层结构,其中包括一个协作式的教学环境和与其他应用软件的接口。系统的设计和开发基于极有可能成为国际标准的IMS规范。文中记述了开发过程以及采用的方法,重点阐述了由组件构成的系统架构和内容共享的实现。

A Three-Tier Architecture and Content Share of Interoperable E-learning System

Interoperability is one of the most important aspects of E-learning system for successful integration with oth-er applications to share and reuse abundant web content resource.There exists an urgent demand on defining architec-ture for Interoperability E-learning System(IES),so that more applications for utilizing the web content can be discov-ered,and interoperability;reusability and adaptability of learning content can be achieved.This paper proposes open three-tier system architecture for an IES,which includes a collaborative learning environment and interfaces for third party applications.It based authors work on extending the IMS specifications which serves as a potentially accepted standard of IEEE in future,it provides an overview of the design process and the pattern used for this system,and spe-cial emphasis is granted on realization of component-based framework and content share.