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ERIC Number: EJ820818
Record Type: Journal
Publication Date: 2009-Jan
Pages: 17
Abstractor: As Provided
Reference Count: 29
ISSN: ISSN-1537-2456
Bridging the Gap Between Time- and Structure-Based Navigation in Web Lectures
Mertens, Robert; Brusilovsky, Peter; Vornberger, Oliver; Ishchenko, Sergey
International Journal on E-Learning, v8 n1 p89-105 Jan 2009
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 structured presentation and a continuous media stream. Current navigation paradigms focus on either one of these components. Time-based overviews do, however, provide different contextual information than structural overviews and vice versa. Instead of enhancing either time- or structure-based navigation by establishing unidirectional connections to structure and time respectively, the approach presented in this article connects time- and structure-based navigation in a bidirectional fashion to combine the advantages of both navigation paradigms. (Contains 8 figures and 2 tables.)
Association for the Advancement of Computing in Education. P.O. Box 1545, Chesapeake, VA 23327-1545. Tel: 757-366-5606; Fax: 703-997-8760; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A