Search (62 results, page 1 of 4)

  • × theme_ss:"Hypertext"
  1. Just, M.: Hypertext und Hypermedia (1993) 0.01 
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    Source
    Bibliothek: Forschung und Praxis. 17(1993) H.2, S.163-175
  2. Mesch, A.: Analyse und Einsatzmöglichkeiten von Hypermedia-Systemen (1994) 0.01 
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    Bibliothek: Forschung und Praxis. 18(1994) H.2, S.161-192
  3. Henze, N.; Nejdl, W.: ¬A logical characterization of adaptive educational hypermedia (2004) 0.01 
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    Abstract
    Currently, adaptive educational hypermedia systems (AEHSs) are described using nonuniform methods, depending on the specific view of the system, the application, or other parameters. There is no common language for expressing the functionality of AEHSs, hence these systems are difficult to compare and analyze. In this paper we investigate how a logical description can be employed to characterize adaptive educational hypermedia. We propose a definition of AEHSs based on first-order logic, characterize some AEHSs resulting from this formalism, and discuss the applicability of this approach.
  4. Kuhlen, R.; Bekavac, B.; Griesbaum, J.; Schütz, T.; Semar, W.: ENFORUM, ein Instrument des Wissensmanagements in Forschung und Ausbildung im Informationswesen (2002) 0.01 
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  5. Karampiperis, P.; Sampson, D.: Supporting accessible hypermedia in web-based educational systems : defining an accessibility application profile for learning resources (2004) 0.01 
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    Abstract
    The design and development of web-based educational systems for people with special abilities have recently attracted the attention of the research community. However, although a number of systems that claim to meet accessibility needs and preferences are proposed, most of them are typically supported by hypermedia and multimedia educational content that is specially designed for the user targeted group. Such approaches prevent their user groups (both learners and their tutors) from accessing other available resources. Therefore, it is important to be able to built generic e-learning systems that would allow the reuse of existing learning resources in different accessibility demanding applications. To this end, in this article we propose a methodology for defining an accessibility application profile that captures the accessibility properties of learning objects in a standard form and we examine its application to the IEEE Learning Object Metadata (LOM) standard.
  6. Groenbaek, K.; Oerbaek, P.; Kristensen, J.F.; Eriksen, M.A.: Physical hypermedia : augmenting physical material with hypermedia structures (2003) 0.01 
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    Abstract
    This paper introduces the notion of physical hypermedia, addressing the problem of organizing material in mixed digital and physical environments. Based on empirical studies, we propose concepts for collectional actions and meta-data actions, and present prototypes combining principles from augmented reality and hypermedia to support organization of mixtures of digital and physical materials. Our prototype of a physical hypermedia system is running on an augmented architect's desk and digital walls utilizing Radio Frequency Identifier (RFID) tags as well as visual tags tracked by cameras. It allows users to tag physical materials, and have these tracked by readers (antennas) that may become pervasive in our work environments. In the physical hypermedia system, we work with three categories of RFID tags: simple object tags, collectional tags, and tooltags invoking operations such as grouping and linking of physical material. In addition, we utilize visual ARToolKit tags for linking and navigating 3D models on a physical desk. Our primary application domain is architecture and design, and so we discuss the use of augmented collectional artifacts primarily for this domain.
  7. Dimitroff, A.; Wolfram, D.: Searcher response in a hypertext-based bibliographic information retrieval system (1995) 0.01 
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    Source
    Journal of the American Society for Information Science. 46(1995) no.1, S.22-29
  8. Spertus, E.: ParaSite : mining structural information on the Web (1997) 0.01 
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    Date
    1. 8.1996 22:08:06
    Source
    Computer networks and ISDN systems. 29(1997) no.8, S.1205-1215
  9. Diaz, P.; Aedo, I.; Panetsos, F.: Labyrinth, an abstract model for hypermedia applications : Description of its static components (1997) 0.01 
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    Date
    5. 4.1996 15:29:15
    Source
    Information systems. 22(1997) no.8, S.447-464
  10. Barabási, A.-L.: Linked: The New Science of Networks (2002) 0.01 
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    Footnote
    Rez. in: nfd 54(2003) H.8, S.497 (T. Mandl): "Gesetze der digitalen Anarchie - Hyperlinks im Internet entstehen als Ergebnis sozialer Prozesse und können auch als formaler Graph im Sinne der Mathematik interpretiert werden. Die Thematik Hyperlinks ist im Information Retrieval höchst aktuell, da Suchmaschinen die Link-Struktur bei der Berechnung ihrer Ergebnisse berücksichtigen. Algorithmen zur Bestimmung des "guten Rufs" einer Seite wie etwa PageRank von Google gewichten eine Seite höher, wenn viele links auf sie verweisen. Barabási erklärt dem Leser seines Buches darüber hinaus noch, wie es zu solchen Phänomenen kommt. Soziale Prozesse im Netz wirken so, dass bereits bekannte Seiten mit größerer Wahrscheinlichkeit auch wieder weitere Links oder neue Besucher anziehen. Barabási ist Physiker an der Notre-Dame University und ihm fehlt ebenso wie Huberman die informationswissenschaftliche Perspektive. Er fragt also kaum, wie kann das Wissen über Netzwerke zu Verbesserungen in Informationssystemen führen, die Benutzerbedürfnisse besser erfüllen. Gleichwohl lohnt sich die Lektüre auch für Informationswissenschaftler. Barabäsi stellt die aktuelle Forschung zur Netzwerkstruktur des Internets auf einfache Weise fast ohne Zugeständnisse an Aktualität und Komplexität dar. Wie Huberman verzichtet auch er weitgehend auf Formeln und andere Formalismen. Der in Ungarn geborene Barabási lässt darüber hinaus keine Anekdote aus, sei es über die Begründer der Graphen-Theorie, im peer-review abgelehnte Beiträge und persönliche Begegnungen mit anderen Forschern. Barabási beginnt mit einfachen Netzwerkstrukturen und schreitet didaktisch über internet-ähnliche Netzwerke weiter zu Anwendungen und praktischen Beispielen aus unterschiedlichsten Disziplinen. Er schafft mit seinem Buch "Linked" unter anderem Links zwischen der ungarischen Literatur, dem I-Love-You Computer-Virus, der Verbreitung von Aids, den Theorien Einsteins, den Aufsichtsräten der wichtigsten amerikanischen Firmen, dem Al-Qaeda-Netzwerk und der Struktur und der Funktion biologischer Zellen. Zu Beginn seines Buches berichtet Barabási von sogenannten kleinen Welten, in denen viele Objekte über wenige Verbindungen zusammenhängen. Ein Blick in den eigenen größeren Bekanntenkreis mag bestätigen, dass viele Menschen über wenige Schritte zwischen Bekannten erreichbar sind. Sowohl Barabäsi als auch Huberman gehen auf die Geschichte des ersten sozialwissenschaftlichen Experiments zu diesem Thema ein, das in den 1960er Jahren versuchte, die Anzahl von Schritten zwischen gemeinsamen Bekannten zu bestimmen, welche vom Mittleren Westen der USA an die Ostküste führt. Die genauere Struktur solcher Systeme, in denen manche Knoten weitaus mehr Beziehungen zu anderen eingehen als der Durchschnitt, führt hin zum Internet. Im Web lässt sich keineswegs immer ein Pfad zwischen zwei Knoten finden, wie noch vor wenigen Jahren vermutet wurde. Die durchschnittliche Entfernung war damals noch mit 19 Klicks berechnet worden. Vielmehr herrscht eine differenziertere Struktur, die Barabási vorstellt und in der zahlreiche Seiten in Sackgassen führen. Huberman wie Barabási diskutieren auch negative Aspekte des Internet. Während Huberman die Wartezeiten und Staus bei Downloads analysiert, bespricht Barabási die rasante Verbreitung von ComputerViren und weist auf die Grundlagen für diese Gefährdung hin. Das vorletzte Kapitel widmen übrigens beide Autoren den Märkten im Internet. Spätestens hier werden die wirtschaftlichen Aspekte von Netzwerken deutlich. Beide Titel führen den Leser in die neue Forschung zur Struktur des Internet als Netzwerk und sind leicht lesbar. Beides sind wissenschaftliche Bücher, wenden sich aber auch an den interessierten Laien. Das Buch von Barabási ist etwas aktueller, plauderhafter, länger, umfassender und etwas populärwissenschaftlicher."
  11. Kuhlen, R.: Hypertext : ein nichtlineares Medium zwischen Buch und Wissensbank (1991) 0.01 
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    Abstract
    Hypertext, eine neue Art der Informationsdarstellung, ist innerhalb weniger Jahre zu einem auf zahlreichen Fachkonferenzen diskutierten Thema im Umfeld von Informatik, Informationswissenschaft, K?nstlicher Intelligenz, Linguistik, Psychologie und Lerntheorie geworden. Die Faszination, die von diesem Medium auf Forschung, Entwicklung und Anwendung gleicherma~en ausgeht, beruht auf der prinzipiell nichtlinearen Organisation der Hypertexteinheiten und den benutzerfreundlichen Formen des ebenfalls nichtlinearen, flexiblen Zugriffs auf die Einheiten in einem Hypertextsystem. In dieser Einf?hrung in die Hypertextmethodik werden die wesentlichen Elemente von Hypertextsystemen, die Informationseinheiten und Verkn?pfungsarten sowie die hypertextspezifischen Navigationsformen, ausf?hrlich theoretisch und anschaulich am Beispiel existierender kommerzieller und experimenteller Hypertextsysteme behandelt. Besonderer Wert wird auf den Zusammenhang von Hypertext und Information Retrieval und die Einsatzm÷glichkeiten von Hypertext in Lernumgebungen gelegt. In theoretischer Hinsicht wird untersucht, ob sich Hypertextbenutzer mit Vorteil gegen?ber anderen Medien die Information erarbeiten k÷nnen, die sie aktuell in kritischen Situationen ben÷tigen, ob und wodurch also gegen?ber traditionellen linearen Formen ein ~informationeller Mehrwert~ erzielt wird. Au~erdem wird die M÷glichkeit diskutiert, mit Hilfe von Textanalyseverfahren und Techniken der Wissensrepr"sentation Hypertexte aus Texten automatisch aufzubauen. Das Buch enth"lt eine umfassende Bibliographie und im Anhang ein Glossar und eine strukturierte Beschreibung der wichtigsten gegenw"rtig erh"ltlichen oder in Entwicklung befindlichen Hypertextsysteme.
  12. Hypertext and information retrieval : [Themenheft] (1993) 0.01 
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    Source
    Information processing and management. 29(1993), no.3
  13. Agosti, M.: Hypertext and information retrieval (1993) 0.00 
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    Source
    Information processing and management. 29(1993) no.3, S.283-286
  14. Dunlop, M.D.; Rijsbergen, C.J. van: Hypermedia and free text retrieval (1993) 0.00 
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    Information processing and management. 29(1993) no.3, S.287-298
  15. Lucarella, D.; Zanzi, A.: Information retrieval from hypertext : an approach using plausible inference (1993) 0.00 
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    Information processing and management. 29(1993) no.3, S.299-312
  16. Croft, W.B.; Turtle, H.R.: Retrieval strategies for hypertext (1993) 0.00 
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    Information processing and management. 29(1993) no.3, S.313-324
  17. Rada, R.; Wang, W.; Birchall, A.: Retrieval hierarchies in hypertext (1993) 0.00 
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  18. Schreiweis, U.: Hypertextstrukturen als Grundlage für integrierte Wissensakquisitionssysteme (1993) 0.00 
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Authors

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