Bridging the Gap Between Time- and Structure-Based Navigation in Web Lectures
Robert Mertens, Fraunhofer IAIS, Germany ; Peter Brusilovsky, University of Pittsburgh, United States ; Oliver Vornberger, Sergey Ishchenko, University of Osnabrück, Germany
International Journal on E-Learning Volume 8, Number 1, ISSN 1537-2456 Publisher: Association for the Advancement of Computing in Education (AACE), Waynesville, NC USA
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.
Mertens, R., Brusilovsky, P., Vornberger, O. & Ishchenko, S. (2009). Bridging the Gap Between Time- and Structure-Based Navigation in Web Lectures. International Journal on E-Learning, 8(1), 89-105. Waynesville, NC USA: Association for the Advancement of Computing in Education (AACE).
© 2009 Association for the Advancement of Computing in Education (AACE)