Chi-Hong Leung

Mobile learning: a new paradigm in electronic learning

As mobile phones become popular, with many people being able to afford them, the demand for mobility is extended to teaching and learning purposes. One recent and significant change in learning environments is the demand for mobility. We introduce a proposed framework of mobile learning. It consists of four functional levels: (1) mobile learning applications, (2) mobile user infrastructure, (3) mobile protocol and (4) mobile network infrastructure. The framework can simplify the design and development so that different parties (e.g. vendors, service providers, designers, developers) can address individual levels. A single party can build on functionalities provided by others. The functions of these four levels are described with some examples. Moreover, practical knowledge management and learning community are two major issues in mobile learning.

MobiLP: a mobile learning platform for enhancing lifewide learning

Lifewide learning recognizes learning to occur in a wide variety of contexts; geographical mobility is therefore important to its technological support. Such a requirement could perfectly be met by mobile computing. We propose MobiLP - a Web-based learning system which supports accesses from both mobile and nonmobile computing devices. It aims at providing educational contents and communication services to teachers and students anytime, anywhere.

Importance of interactivity and customization in online learning

This paper emphasizes the importance of interactivity and customization in online learning. With the web being the essential means of CMC (computer-mediated communication), interaction between the website and the learner is of prime significance for personalization to address individual needs and enabling success. Based on the two major dimensions of interactivity, namely control and message, a conceptualization on the different levels and types of customization is also presented with various application discussed.

Evaluation on security and privacy of Web-based learning systems

Web-based learning systems are becoming popular in the recent years. Many courses and lectures are now conducted online. Similar to other Web-based applications, security and privacy of Web-based learning systems should not be overlooked. We evaluate the security and privacy of general Web-based learning systems. We address the security and privacy requirements specific to them. Recommendations on design and implementation of a secure Web-based learning system are also presented. In particular, we have evaluated the security services of two popular Web-based learning tools.

An efficient Japanese parsing algorithm for computer-assisted language learning

Instructional grammar is often used in computer-assisted language learning (CALL) and the grammatical error detection is an important feature. However, it is not an easy task in Japanese language. There is no delimiter separating consecutive words in Japanese sentences. Word segmentation is a process in which proper word boundaries are identified. Before syntactic parsing of a Japanese sentence, word segmentation has to be performed. Traditionally, the word segmentation is often followed by the syntactic parsing. An algorithm in which the Japanese word segmentation and syntactic parsing are combined into one process can increase the overall efficiency.

An efficient Chinese parsing algorithm for computer-assisted language learning

Instructional grammar is often used in computer-assisted language learning (CALL) and the grammatical error detection is an important feature. However, it is not an easy task in Chinese language. There is no delimiter separating consecutive words in Chinese sentences. Word segmentation is a process in which proper word boundaries are identified. Before syntactic parsing of a Chinese sentence, word segmentation has to been performed. Traditionally, the word segmentation is often followed by the syntactic parsing. This paper introduces an algorithm in which the Chinese word segmentation and syntactic parsing are combined into one process to increase the overall efficiency.