Typical web lectures consist of two different kinds of media linked together: an audio- or video-recording and the corresponding slides or desktop recording. Both media are synchronized so that the slide or image shown corresponds to the position currently played in the time-based media stream. Web lectures are thus composite media consisting of a…

Purpose: Social navigation is an emerging trend for navigation in hypermedia. With social navigation, users can be guided through large volumes of learning content by cues which integrate the browsing history of past users. Earlier papers have shown that social navigation is suitable for navigation not only in classic hypermedia but also in…

Explains adaptive hypermedia, provides a brief overview of adaptive navigation support techniques in educational hypermedia systems, and analyzes the results of most representative empirical studies. Demonstrates the importance of context and knowledge levels of the users and suggests that meta-adaptive hypermedia systems should be the next step.…

This paper describes an approach for developing adaptive electronic textbooks and presents InterBook, an authoring tool based on this approach which simplifies the development of adaptive electronic textbooks on the World Wide Web. The following topics are discussed: (1) content structuring, including the domain and user models, the glossary, and…

This paper describes the electronic ACT-R Bookshelf, a system which supports learning ACT-R, a well-known theory in the field of cognitive psychology, over the World Wide Web. ACT-R Bookshelf is a collection of electronic books on various aspects of ACT-R. The primary role of ACT-R Bookshelf is to serve as a 24-hour information resource for…