A New Layering Architecture of E-Learning System
By nature, an E-Learning system includes two aspects–learning and technologies. In the perspective of learning, learning contents (knowledge) and learning resources are the main parts of an E-Learning system; technologies are only means or tools which wil
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Abstract. By nature, an E-Learning system includes two aspects--learning and technologies. In the perspective of learning, learning contents (knowledge) and learning resources are the main parts of an E-Learning system; technologies are only means or tools which will be used to support learning process. With the popularization and deeper application of E-Learning systems, more and more network courses and learning resources have been developed. Accordingly, many problems have being occurred too, such as the difficulty of curriculum developing and updating, the flexibility, expansibility and maintainability of an E-Learning system, etc. On the basis of research about learning contents and their management, i.e., knowledge body of a discipline, we proposed a discipline oriented common knowledge ontology base based layering architecture of E-Learning system. In this developing mode, a common knowledge ontology base (KOB) in a discipline will be built, then through it, the problems of curriculum developing, course contents updating, learning contents reusing among different courses and the learning resources management will be solved, so to ensure the flexibility and practicability of E-Learning systems. Keywords: E-Learning System Architecture, Knowledge Ontology, Learning Resource Management.
1 Introduction With the rapid development of knowledge society and the accelerating of knowledge updates, E-Learning has now become one of the most important applications of Internet and has become a very important means of learning. Now, more and more people receive education and update their knowledge through E-Learning. By nature, E-Learning is an application of information technology in learning, that the main technologies include computer technology, multimedia technology and modern communication technology etc. So, in the perspective of content, E-Learning includes two aspects of learning and technologies; in the perspective of appearance, E-Learning usually takes two kinds of forms--a computer software or a web-based application, i.e. an E-Learning environment or platform, and now the later one is the mainly form in all E-Learning systems. E-Learning system, especially web-based E-Learning system is by nature a multi-layer structured web application. It is composed of a main directory in a web server which includes some sub-directories, some virtual directories, a large amount of documents and H. Leung et al. (Eds.): ICWL 2007, LNCS 4823, pp. 218 – 229, 2008. © Springer-Verlag Berlin Heidelberg 2008
A New Layering Architecture of E-Learning System
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databases, all of which constitute the learning resources of an E-Learning system. Due to the characteristics of web application itself, courses developing or course contents updates may lead to great changes of hyperlinks, thus resulting in poor maintainability and expansibility of E-Learning systems. With the development of E-Learning system, as time goes on, the quantity of data in E-Learning system increase rapidly. Meanwhile, the types of learning resources are mor
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