This study was concerned with identifying prerequisites for the successful use of videos that offer different levels of interactivity. In a homework scenario, 64 ninth graders participated either in a search training demonstrating the efficient use of features facilitating the selection of relevant information or in a control training focusing on…

Describes the VISION (video indexing for searching over networks) digital video library system which was developed at the University of Kansas as a testbed for evaluating automatic and comprehensive mechanisms for library creation and content-based search and retrieval of video over local and wide area networks. Discusses experimental results.…

Guidelines presented for the design of instruction using interactive technologies are based on theory and research in learning, instruction, and/or media development. Also explained is a meta-model, ROPES, which highlights retrieval of information, orienting activities, presentation, encoding in the cognitive structure, and the sequencing of…

Four types of video surrogates were compared under two tasks. Multidimensional scaling was used to map dimensional dispersions of users' judgments of similarity between videos and surrogates. Congruence between these maps was used to evaluate representativeness of each surrogate type. Congruence was greater for image-based than for text-based…

Discusses the need for a rich semantics for the user interface in interactive image retrieval and presents two methods for building such interfaces: possibility theory applied to fuzzy data retrieval, and a machine learning technique applied to learning the user's deep need. Prototypes developed using videodisks and knowledge-based software are…

Anchored instruction calls for the establishment of a macrocontext to "anchor" instruction within a realistic situation. Evidence is provided that video anchors encourage students to adopt certain contrived goals over their more naturalistic goals. Suggests that goals that enable the problem solver to detect the "raison d'etre"…

Investigates the information representation power of different modalities in the video data in order to collect empirical evidence for video surrogate creation and thus better support effective video browsing and information retrieval. Three types of video surrogates were created and compared under two user tasks--verbal comprehension and visual…

Reviews learner strategy research, strategy instruction, and on-line help in multimedia instructional materials, and reports on a study investigating 20 native Chinese-speaking English language learners' use of computer resource facilities (e.g., scripts, glossaries, background information) in an interactive videodisc program and their reactions…