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Source

nfd Information - Wissenschaft und Praxis. 48(1997) H.6, S.325-334

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Abstract

Develops frameworks to help Internet media designers address end user information presentation preferences by advancing structures for assessing metadata design variables. Design variables are then linked to user cognitive styles. An underlying theme is that artificial intelligence methodologies may be used to help automate the Internet media design process and to provide personalized and customized experiences. User preferences concerning knowledge acquisition in online experiences provide the basis for discussions of cognitive analysis, and are extended into structural implications for media design and interaction

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Abstract

By referring to existing prototypes and systems, in this paper the advantages and disadvantages of computer and multimedia technologies in the development of reference works such as dictionaries and encyclopedias are discussed. Some positive aspects of multimedia reference works are the possibility of accessing the same entry through a number of keys and research mechanisms, the possibility of 'navigating' through the semantic structure of the work itself, and even crossing the borders between different underlying structures. Some systems permit users to select the type of information they desire regarding a certain entry. This characteristics is particularly valuable in educational systems since it relieves users of the not so trivial task of autonomously extracting the information they need from a text which, because of the need for both conciseness and thoroughness, can be cryptic. In addition, some of theses systems not only include texts and illustrations but also audiovisual material, tutorials, and multimedia sequences with different educational and informative aims. Finally, the cost of, and time taken in, producing works of this type (except motion video production!), are potentially less than for analogous printed works with consequent repercussions on distribution costs and the frequency with which works can be updated. The major limits of multimedia dictionaries and encyclopedias are practical ones, such as the scarce availability and standardization of suitable hardware platforms. Furthermore, hardware and software constraints impose compromises in terms of quality of images and audio, quality and quantity of motion video

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Abstract

Reviews the current state of the art in the field of electronic publishing of periodical articles in full text, with particular reference to the experiences of Elsevier Science. Distinguishes between 4 types of full text electronic publishing: bibliographic data, for example CAPCAS, with SGML type electronic bibliographic records for articles in Elsevier journals; electronic access to an existing periodical on a single title basis, similar to the way in which Elsevier provides access to articles in the well established printed periodical Nuclear Physics; enhancement of an existing periodical through expanded hypertext links, in the same way that Immunology Today Online is provided with value added features impossible to emulate in a printed periodical; and the TULIP model, an Elsevier initiative which enables large scale full text document delivery of electronic periodicals via unedited ASCII full text created by OCR and cover to cover 300 dpi bitmapped page images. Pays tribute to other initiatives in the field, including: document delivery services such as UnCover and the British Library's Inside Information; Digital Libraries Initiative; Informedia Digital Video Library Project; Stanford Integrated Digital Library Project; California University at Berkeley Digital Library Project and Alexandria Digital Library Project. Discusses the future of the information and publishing industries in the light of these developments, noting the implications and problems likely to be encountered and the opportunities for new, multimedia publications

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Abstract

Describes a hypermedia application that provides students reading German texts with advance organizers in the form of a movie clip designed to facilitate global comprehension and glosses for words in the form of text, graphics, video, and sound. Results of testing indicate that studuents not only reported the photograph and movie links as most helpful for learning vocabulary, but in fact chose them more than text. Performance on vocabulary tests showed that when links were accessed, words were recalled correctly approximately 75% of the time. Learner behaviour data showed that so called visualizers and verbalizers performed equally well on the vocabulary tests but accessed different modes of information (links) corresponding to their respective cognitive styles

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Content

Multimedia: für wen? - Medienpädagogik und Multimedia - 'Alte' Medien, Hypermedia und Netze - Ebenen der Kommunikation - Multimedia für alle: Partizipation der 'information poor' - Multimedia in die Jugendarbeit: soziale Utopien und kreative Konzepte - CD-ROM-Projekt 'Beteiligung in der Jugendhilfe' - Kommunikative Kompetenz

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Source

Information today. 15(1998) no.5, S.40

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Theme

Information

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Abstract

Reports the basis for a cognitive walkthrough method to support the evaluation of multimedia presentations, e.g. 'how to do it' demonstrations. The walkthrough is founded upon an analysis of the cognitive processes and representations formed by the comprehension of the presentation. Issues include evaluation of attention, topic focus and information types. The walkthrough provides a series of guidelines for evaluation based on these cognitive models, such as the use of media, scripting and presentation techniques. The value of the guidelines is validated by several empirical studies. Reports an eye tracking study providing evidence as to how visual attention responds to multimedia materials. A series of comprehension studies then investigates the effectiveness of a presentation before and after the guidelines were applied. Illustrates with an example evaluation and studies of a commercially produced multimedia CD-ROM presentation on the etiology of cancer

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Source

Journal of the American Society for Information Science. 46(1995) no.5, S.340-347