Search (29 results, page 1 of 2)

  • × year_i:[1980 TO 1990}
  • × theme_ss:"Benutzerstudien"
  1. Wilson, T.D.: On user studies and information needs (1981) 0.01
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    Abstract
    Apart from information retrieval there is virtually no other area of information science that has occasioned as much resarch effort and writing as 'user studies'. Within user studies the investigation of 'information needs' has been the subject of much debate and no little confusion. The aim of this paper is to attempt to reduce this confusion by devoting attention to the definition of some concepts and by proposing the basis for a theory of the motivations for information-seeking behaviour
  2. Saracevic, T.; Kantor, P.; Chamis, A.Y.: ¬A study of information seeking and retrieving : pt.1: Background and methodology (1988) 0.01
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    Abstract
    The objectives of the study were to conduct a series of observations and experiments under as real-life a situation as possible related to: (i) user context of questions in information retrieval; (ii) the structure and classification of questions; (iii) cognitive traits and decision making of searchers; and (iv) different searches of the same question. The study is presented in three parts: part 1 presents the background of the study and describes the models, measures, methods, procedures and statistical analyses used. Pt.2 is devoted to results related to users, questions, and effectiveness measures, and pt.3 to results related to searchers, searches, and overlap studies. A concluding summary of all results is presented in pt.3
    Footnote
    Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. Sam Francisco: Morgan Kaufmann 1997. S.175-190.
    Source
    Journal of the American Society for Information Science. 39(1988), S.161-176
  3. Borgman, C.L.: Why are online catalogs hard to use? : lessons learned from information-retrieval studies (1986) 0.01
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    Abstract
    Research in user behavior on online catalogs is in its early stages, but preliminary findings suggest that users encounter many of the same problems identified in behavioral studies of other types of bibliographic retrieval systems. Much can be learned from comparing the results of user behavior studies on these two types of systems. Research on user problems with both the mechanical aspects and the conceptual aspects of system use is reviewed, with the conclusion that more similiratiy exists across types of systems in conceptual than in mechanical problems. Also discussed are potential sources of the problems, due either to individual characteristics or to system variables. A series of research questions is proposed and a number of potential interim solutions ae suggested for alleviating some of the problems encountered by users of information systems
    Source
    Journal of the American Society for Information Science. 37(1986), S.387-400
  4. Croucher, C.: Problems of subject access : user studies and interface design (1986) 0.00
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    Abstract
    A research project at Middlesex Polytechnic is examning the problems of subject access in an OPAC. A series of user studies have been carried out which examined students' use of existing catalogue facilities, which in turn led to the experimental evaluation of various interface designs for an online catalogue. The experiments were primarily concerned with the effect of the following variables on the speed and accuracy of retrieval of specific items, the use of colour, the speed of presentation of information, the amount of information on a screen, the paging and scrolling of information, the position of a sought item within a list
  5. Markey, K.: Subject searching in library catalogs : Before and after the introduction of online catalogs (1984) 0.00
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    Theme
    Klassifikationssysteme im Online-Retrieval
  6. Klugman, S.: Failures in subject retrieval (1989) 0.00
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  7. Hancock, M.: Subject searching behaviour at the library catalogue and at the shelves : implications for online interactive catalogues (1987) 0.00
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    Abstract
    Searching behaviour in a university library is studied using a holistic approach, encompassing the use of bibliographic tools and shelf browsing. The present study is designed as the first half of a 'before and after' study to permit the evaluation of the impact of a future online catalogue on users' searching behaviour. A combined methodology was devised: searchers were encouraged to talk aloud during their search, and this information, together with some probing and real time expert interpretation, enabled the experimente to record the searching activity on a highly structured observation form. The study reveals the extent of subject searching activity, and suggests that this may have been underestimated in previous studies. The analysis of expressed topics, search formulation strategy and documents retrieved reveals the adaptive nature of the subject searching process, whereby the user adapts to the structure of the available tools. The information retrieval task in a traditional library system is tailored by the system to a single, one dimensional, sequential process. It is suggested that a major obstacle to subject searching effectiveness may lie in the lack of interaction between the different possible approaches in the searching process: the indexing language, the classification, and the titles. It is to be hoped that a future online searching environment will encourage a more truly interactive approach to subject searching.
  8. Kaske, N.K.: ¬A comparative study of subject searching in an OPAC among branch libraries of a university library system (1988) 0.00
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    Abstract
    The degree of variability in the percentage of subject searching in an online public access catalog (OPAC) among branch libraries of one university was studied. A full semester's worth of transactions was analyzed, not sampled. The time units used were hour of the day, day of the week, and week of the semester. The findings show that subject searching varies from a low of 22% to a high of 74% over the hours of a day. Variability for the days of the week ranged from 17% to 64%, and for the weeks of the semester variability ranged from 12% to 70%. Valuable management information on the utilization of the OPAC within each brach library and among all the branch libraries is provided through numerous charts and graphs.
    Source
    Information technology and libraries. 7(1988), S.359-372
  9. Saracevic, T.; Kantor, P.: ¬A study of information seeking and retrieving : pt.2: users, questions, and effectiveness (1988) 0.00
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    Source
    Journal of the American Society for Information Science. 39(1988) no.3, S.177-196
  10. Saracevic, T.; Kantor, P.: ¬A study of information seeking and retrieving : pt.3: searchers, searches, and overlap (1988) 0.00
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    Source
    Journal of the American Society for Information Science. 39(1988) no.3, S.197-216
  11. Kuhlthau, C.C.: Longitudinal case studies of the information search process of users in libraries (1988) 0.00
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    Source
    Library and information science research. 10(1988) no.3, S.257-304
  12. Markey, K.: Thus spoke the OPAC user (1983) 0.00
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    Source
    Information technology and libraries. 2(1983), S.381-387
  13. Bishop, D.F.: ¬The CLR OPAC study : analysis of ARL user responses (1983) 0.00
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    Source
    Information technology and libraries. 2(1983), S.315-321
  14. Beheshti, J.: ¬A cross-sectional study of the use of the library books by undergraduate students (1989) 0.00
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    Source
    Information processing and management. 25(1989), S.727-735
  15. Beheshti, J.: ¬A longitudinal study of the use of library books by undergraduate students (1989) 0.00
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    Source
    Information processing and management. 25(1989), S.737-744
  16. Cochrane, P.A.; Markey, K.: Catalog use studies : since the introduction of online interactive catalogs, impact on design for subject access (1983) 0.00
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    Source
    Library and information science research. 5(1983), S.337-363
  17. Peters, H.J.: User reactions to PRECIS indexes (1981) 0.00
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    Imprint
    Liverpool : Polytechnic. School of Librarianship and Information Studies
  18. Kantor, P.B.: ¬A model for stopping behavior of the users of on-line systems (1987) 0.00
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    Source
    Journal of the American Society for Information Science. 38(1987), S.211-214
  19. Wiberley, S.E.; Daugherty, R.A.: Users' persistence in scanning lists of references (1988) 0.00
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    Abstract
    One of the basic information-seeking activities where library users might experience information overload is scanning lists of references. Because much information seeking is discretionary - users may abandon a search without fear of penalty - lists that are too long may influence users to stop searching
  20. Broadbent, E.: ¬A study of humanities faculty library information seeking behavior (1986) 0.00
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    Abstract
    The purpose of this study is to obtain information which would help planners of the online catalog design a catalog which would be relevant to the needs of university faculty. Data was obtained by means of a questionnaire mailed to the faculty, College of Humanities, University of Utah. It was found that (1) references in books or articles they read; (2) the Subject Catalog; and (3) printed indexes, bibliographies and research guides in that order were the three most utilized information sources. Browsing was an important fourth. The faculty would like more in-depth coverage of the local library collection rather than access to other library catalogs or online databases from the catalog terminal. Feedback and comments in response to an open-ended question varied.