Search (100 results, page 2 of 5)

  • × theme_ss:"OPAC"
  • × theme_ss:"Suchoberflächen"
  1. Hancock-Beaulieu, M.; Fieldhouse, M.; Do, T.: ¬An evaluation of interactive query expansion in an online library catalogue with a graphical user interface (1995) 0.00 
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    Abstract
    An online library catalogue served as a testbed to evaluate an interactive query expansion facility based on relevance feedback for the Okapi probabilistic term weighting retrieval system. The facility was implemented in a graphical user interface (GUI) environment using a game-board metaphor for the search process, and allowed searchers to select candidate terms extracted from relevant retrieved itms to reformulate queries. The take-up of the interactive query expansion option was found to be lower, and its retrieval performance less effective, compared to previous tests featuring automatic query expansion. Contributory factors including the number, presentation and source of terms are discussed
    Type
    a
  2. Ashton, J.: Development of the British Library's OPAC 97 : the value of a user-centred approach (1998) 0.00 
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    Abstract
    Reviews the development of the British Library OPAC services leading up to the launch of OPAC 97, offering access to 9 mio bibliographic records and attempts to show the value of a user centred approach in the project management involved in developing such a service as recommended by Human Computer Interaction (HCI) studies. Reviews the evaluation studies of the Online Catalogue, the Network OPAC, a web prototype interface and of OPAC 97 and discusses the results in relation to the OPAC 97 project. Although the OPAC 97 interface made use of various HCI recommendations, user feedback sometimes contradicted these in specific instances, revealing the value of detailed user evaluation in developing services
    Type
    a
  3. Hancock-Beaulieu, M.; Fieldhouse, M.; Do, T.: ¬A graphical interface for OKAPI : the design and evaluation of an online catalogue system with direct manipulation interaction for subject access (1994) 0.00 
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    Abstract
    A project to design a graphical user interface for the OKAPI online catalogue search system which uses the basic term weighting probabilistic search engine. Presents a research context of the project with a discussion of interface and functionality issues relating to the design of OPACs. Describes the design methodology and evaluation methodology. Presents the preliminary results of the field trial evaluation. Considers problems encountered in the field trial and discusses contributory factors to the effectiveness of interactive query expansion. Highlights the tension between usability and functionality in highly interactive retrieval and suggests further areas of research
  4. Pejtersen, A.M.: ¬A framework for indexing and representation of information based on work domain analysis : a fiction classification example (1994) 0.00 
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    Abstract
    Information retrieval and exploration of work domains through databases and integrated information systems has become increasingly important in many modern work settings (as well as in libraries). The problem space of the users is defined on occasion by the dynamically changing requirements from their tasks and goals. it is argued that IR system design should be based on an analysis of the properties of the work domain, the task situation and the user characteristics. The paper describes a general framework for IR system design that has been used in the design of a library system. A special problem identified from use of the framework in domain analysis of fiction retrieval is treated in more detail: mapping the authors' domain structures to the domain structures expressed in users' needs in indexing and representation of fiction
    Type
    a
  5. Hulser, R.P.: Overview of graphical user interfaces (1992) 0.00 
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    Abstract
    Traces the improvements in the capability of microcomputers to support graphics as they have led to improved, graphics and menu based interfaces for OPACs. Presents a state of the art review covering the development of OPAC screens, OPAC front end design; and the planning and implementation of OPAC front ends
    Type
    a
  6. Grant, W.C.; Jones, D.E.: ¬The three T's for a talking online catalog : technology, teamwork, teaching (1993) 0.00 
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  7. OPACs: an overview (1993) 0.00 
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    Abstract
    Part of a special section on OPACs. Gives an overview of OPACs. Describes and examines: Boolean searching, post Boolean searching, bibliographic records, user interfaces, current research, added OPAC functionality, and comment on the provision of OPAC equipment for the end user. Introduces the OPAC 93 system developed by the British Library
    Type
    a
  8. Henry, H.K.: Human-computer interfaces and OPACs : introductory thoughts related to INNOPAC (1991) 0.00 
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    Abstract
    Describes the 2 groups of human-computer interface; conversational and object oriented. Evaluates on-line catalogues according to human-computer interface design concepts. Concludes that INNOPAC is a distinct improvement on the card catalogue and that its potential is just being appreciated
    Type
    a
  9. Kreichgauer, U.: Ergonomische Gestaltung von Benutzungsoberflächen : welche Hilfen bieten Standards? (1992) 0.00 
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    Source
    Mensch und Maschine: Informationelle Schnittstellen der Kommunikation. Proc. des 3. Int. Symposiums für Informationswissenschaft (ISI'92), 5.-7.11.1992 in Saarbrücken. Hrsg.: H.H. Zimmermann, H.-D. Luckhardt u. A. Schulz
    Type
    a
  10. Fellows, G.; Tsang, P.: ¬A common interface for remote access on online library catalogues (1993) 0.00 
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  11. CARL releases CARLweb 2.0 (1998) 0.00 
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    Abstract
    CARL Co. has released CARLweb 2.0, a new version of its WWW OPAC interface. Lists the range of features of the new version and notes development which will be available in future releases
    Type
    a
  12. Borgman, C.L.; Walter, V.A.; Rosenberg, J.: ¬The Science Library Catalog project : comparison of children's searching behaviour in hypertext and a keyword search system (1991) 0.00 
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    Abstract
    Reports on a continuing project to study children's use of a graphically-based direct manipulation interface for science materials. The Science Library Catalogue (SLC), a component of project SEED, has been implemented in the libraries of 21 elementary schools in Los Angeles and will soon be implemented in a public library. The interface employs a hierarchical structure drawn from the DDC and implemented in HyperCard on the Macintosh. The study on the 2nd version of the interface indicates that children are able to use the Science Library Catalogue unaided, with reasonable success in finding items. Search success on the same topics on a Boolean command driven system was equivalent, but Boolean searches were faster. However, the Boolean system was more sensitive to differences in age, with 12-year-olds having significantly better success rates than 10-year-olds; and to search topic, with one set of questions being much easier to search than the other. On average, children liked the 2 systems about the same; the Boolean system was more attractive to certain age and gender combinations, while the Science Library Catalogue was more consistently liked across groups. results are compared to prior studies on the Science Library Catalogue and other online catalogues
    Type
    a
  13. Hancock-Beaulieu, M.M.: User friendliness and human-computer interaction in online library catalogues (1992) 0.00 
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  14. Bates, M.J.: ¬The design of browsing and berrypicking : techniques for the online search interface (1989) 0.00 
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  15. Hancock-Beaulieu, M.; Mitev, N.N.: Online library catalogues : the interactive dimension (1989) 0.00 
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  16. Crawford, W.: Testing bibliographic displays for online catalogs (1987) 0.00 
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  17. Tague, J.: Negotiation at the OPAC interface (1989) 0.00 
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  18. Bartholomäus, I.: ¬Die Benutzeroberfläche (1991) 0.00 
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  19. Crawford, W.: Starting over : current issues in online catalog user interface design; ALA spotlight article (1992) 0.00 
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  20. Zorn, M.J.; Marshall, L.: Graphical user interfaces and library systems : end user reactions (1995) 0.00 
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    Abstract
    The GUI is impacting library application software. Despite this trend, user satisfaction with the GUI has not been documented. The Parke-Davis Pharmaceutical Research Library, USA, undertook a study to determine user satisfaction with the new GUI based Dynix Marquis, as compared with the Dynix Classic OPAC. The study included a survey assessing user satisfaction and a review of overall usage. Survey findings show that the GUI based OPAC was preferred by end users over the text based OPAC. Usage reports supported the survey findings with significantly increased usage after migration
    Type
    a

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