Search (174 results, page 1 of 9)

  • × theme_ss:"OPAC"
  • × theme_ss:"Benutzerstudien"
  1. Schneider, R.: OPACs, Benutzer und das Web (2009) 0.04 
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    Date
    22. 2.2009 18:50:43
    Source
    Zeitschrift für Bibliothekswesen und Bibliographie. 56(2009) H.1, S.9-19
    Type
    a
  2. Wallace, P.M.: Periodical title searching in online catalogues (1997) 0.02 
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    Abstract
    Reports on a dramatic shift from subject to periodical title searching at Colorado University Libraries. States possible reasons for the change, examines problems encountered by users with searching the periodical title index and suggests how this change in online catalogue searching may affect future catalogue design and bibliographic instruction
    Date
    29. 7.1998 10:57:22
    Type
    a
  3. Kaske, N.K.: ¬A comparative study of subject searching in an OPAC among branch libraries of a university library system (1988) 0.02 
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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.
    Type
    a
  4. Moulaison, H.L.: OPAC queries at a medium-sized academic library : a transaction log analysis (2008) 0.02 
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    Abstract
    Patron queries at a four-year comprehensive college's online public access catalog were examined via transaction logs from March 2007. Three representative days were isolated for a more detailed examination of search characteristics. The results show that library users employed an average of one to three terms in a search, did not use Boolean operators, and made use of limits one-tenth of the time. Failed queries remained problematic, as a full one-third of searches resulted in zero hits. Implications and recommendations for improvements in the online public access catalog are discussed.
    Date
    10. 9.2000 17:38:22
    Type
    a
  5. Vogt, R.: "Es wurde keine Treffermenge gefunden" (1999) 0.02 
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    Source
    ProLibris. 4(1999) H.2, S.90-94
    Type
    a
  6. Witt, M.: Survey on the use of the catalogue at the Mediatheque of the Cité des Sciences et de l'Industrie (CSI) (1993) 0.02 
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    Abstract
    The library of the Cité des Sciences et de l'industrie attracts 4.000 visitors daily of whom 25% consult the GEAC system OPAC. Describes a 1992 survey consisting of online questions followed by an interview. The questionnaires were adapted from ones used in the UK and utilised OLIVE (Online Interactive Validation and Evaluation). While difficulties arose from users' inconsistency in their replies and failures to answer questions, it has become clear that subject access is unsatisfactory, sometimes because of mistyping by the searcher but also because of the vocabulary problems and lack of guidance in search strategies
    Source
    International cataloguing and bibliographic control. 22(1993) no.4, S.68-71
    Type
    a
  7. Puhl, A.: Wer suchet, der findet - nicht immer ... : EFIL untersucht Suchstrategien von Büchereibesuchern (2001) 0.02 
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    Source
    BuB. 53(2001) H.12, S.678-680
    Type
    a
  8. Smrzka, B.: ¬Der Web-OPAC der Büchereien Wien : Usability Untersuchung (2003) 0.02 
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    Location
    A
    Source
    Online Mitteilungen. 2003, Nr.77, S.43 [=Mitteilungen VÖB 56(2003) H.3/4]
    Type
    a
  9. Obermeier, F.: Schlagwortsuche in einem lokalen OPAC am Beispiel der Universitätsbibliothek Eichstätt : Benutzerforschung anhand von OPAC-Protokolldaten (1999) 0.02 
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    Source
    Bibliotheksforum Bayern. 27(1999) H.3, S.296-319
    Type
    a
  10. Arbeitskreis 'Benutzererwartungen in die Sacherschließung' der Kommission für Sacherschließung der VÖB: Schlagwort "Benutzerforschung" : Beobachtungen bei der sachlichen Suche im OPAC des österreichischen wissenschaftlichen Bibliothekenverbundes (1997) 0.01 
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    Footnote
    Mitglieder der Arbeitsgruppe: D. Engl, J. Friedl, J. Labner, M. Sandner, W. Schlacher, A. Schmidt, A. Zartl
    Location
    A
    Source
    Mitteilungen der Vereinigung Österreichischer Bibliothekarinnen und Bibliothekare. 50(1997) H.3/4, S.28-49
    Type
    a
  11. Matsui, S.; Konno, H.: Evaluation of World Wide Web access to OPACs of public libraries in Japan : functional survey of 46 OPAC systems and end user survey of three of those systems (2000) 0.01 
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    a
  12. Huang, M.-h.: End-users' searching behaviour : changes in search type over time (1996) 0.01 
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    Abstract
    Identifies 6 types of searches on the basis of paudsing behaviour by using cluster analysis. The 6 types of search were highly associated with search fleuncy and the construction of a mental model. Examines learning during multiple searches on the basis of the 6 types. Finds that searchers gain more experience, increase their searching proficiency and become more fluent at searching while online. The changes of search level in multiple searches showed that most searchers moved towards greater fleuncy
    Type
    a
  13. Schmidt, E.; Weigang, G.; Schulz, U.: OPAC-Nutzer ernst genommen : eine Thinking-Aloud-Studie am ALS-OPAC der Hamburger Öffentlichen Bücherhallen (1997) 0.01 
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    Abstract
    Describes a thinking aloud study with OPAC users at HÖB which revealed considerable difficulties caused by the inadequate design of the interface and the search options for online catalogues. Reports results of an analysis of comments by users on misunderstandings and abortive search attempts which provides insights into strategies for improved OPAC design
    Source
    Bibliothek: Forschung und Praxis. 21(1997) H.2, S.215-226
    Type
    a
  14. Dokter, G.: Benutzungsanstieg nach OPAC-Einführung in der Universitätsbibliothek Bochum (1993) 0.01 
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    Source
    Mitteilungsblatt. VdB NW. 43(1993) H.3, S.272-287
    Type
    a
  15. Diepolder, S.: Was ist eine Köperschaft? : Umfrage zur Opac-Nutzung an der Universitätsbibliothek Tübingen (2003) 0.01 
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    Source
    BuB. 55(2003) H.1, S.28-30
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  16. Weichert, M.: "Gibt es auch Wahnsinn" : Benutzeruntersuchungen an einem Hamburger WebOPAC (2002) 0.01 
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    Source
    Bibliothek: Forschung und Praxis. 26(2002) H.2, S.142-149
    Type
    a
  17. Wildemuth, B.M.; O'Neill, A.L.: ¬The '¬known' in known-item searches : an empirical support for user-centered design (1995) 0.01 
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    Abstract
    Traditionally, catalogue records have contained a complete description of the item to ensure retrieval by a wide variety of approaches. An alternative approach, user centered design, requires a study of user behaviour and cognition related to interaction with the catalogue to determine inform design decisions. To support known item searching, it is necessary to users' conceptions of the item being sought, what the users know about them, and which pieces of known information are viewed by the users as most appropriate for inclusion in a search. Reports results of a pilot study, at the Davis Library, North Caroline University at Chapel Hill, in which 103 catalogue users described 386 searches and any written information known by the searchers was photocopied. Searchers generally knew the title, publication date, and page numbers (particular for periodical articles). Results indicated that this approach to catalogue design was feasible and valid, and provided a preliminary picture of nkown item searching in 1 library's catalogue
    Footnote
    Vgl. auch Übersetzung in: ZfBB 43(1996) H.1, S.23-45
    Type
    a
  18. Wildemuth, B.M.; O'Neill, A.L.: Katalogrecherche nach bekannten Vorlagen : empirische Überlegungen zu nutzerorientierten Nachweisinstrumenten (1996) 0.01 
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    Abstract
    Traditionally, catalogue records have contained a complete description of the item to ensure retrieval by a wide variety of approaches. An alternative approach, user centered design, requires a study of user behaviour and cognition related to interaction with the catalogue to determine inform design decisions. To support known item searching, it is necessary to users' conceptions of the item being sought, what the users know about them, and which pieces of known information are viewed by the users as most appropriate for inclusion in a search. Reports results of a pilot study, at the Davis Library, North Caroline University at Chapel Hill, in which 103 catalogue users described 386 searches and any written information known by the searchers was photocopied. Searchers generally knew the title, publication date, and page numbers (particular for periodical articles). Results indicated that this approach to catalogue design was feasible and valid, and provided a preliminary picture of nkown item searching in 1 library's catalogue
    Source
    Zeitschrift für Bibliothekswesen und Bibliographie. 43(1996) H.1, S.23-45
    Type
    a
  19. Lau, E.P.; Goh, H.-L.: In search of query patterns : a case study of a university OPAC (2006) 0.01 
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    Abstract
    A transaction log analysis of the Nanyang Technological University (NTU) OPAC was conducted to identify query and search failure patterns with the goal of identifying areas of improvement for the system. One semester's worth of OPAC transaction logs were obtained and from these, 641,991 queries were extracted and used for this work. Issues investigated included query length, frequency and type of search options and Boolean operators used as well as their relationships with search failure. Among other findings, results indicate that a majority of the queries were simple, with short query lengths and a low usage of Boolean operators. Failure analysis revealed that on average, users had an almost equal chance of obtaining no records or at least one record to a submitted query. We propose enhancements and suggest future areas of work to improve the users' search experience with the NTU OPAC.
    Type
    a
  20. Chen, H.-M.; Cooper, M.D.: Using clustering techniques to detect usage patterns in a Web-based information system (2001) 0.01 
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    Abstract
    Different users of a Web-based information system will have different goals and different ways of performing their work. This article explores the possibility that we can automatically detect usage patterns without demographic information about the individuals. First, a set of 47 variables was defined that can be used to characterize a user session. The values of these variables were computed for approximately 257,000 sessions. Second, principal component analysis was employed to reduce the dimensions of the original data set. Third, a twostage, hybrid clustering method was proposed to categorize sessions into groups. Finally, an external criteriabased test of cluster validity was performed to verify the validity of the resulting usage groups (clusters). The proposed methodology was demonstrated and tested for validity using two independent samples of user sessions drawn from the transaction logs of the University of California's MELVYL® on-line library catalog system (www.melvyl.ucop.edu). The results indicate that there were six distinct categories of use in the MELVYL system: knowledgeable and sophisticated use, unsophisticated use, highly interactive use with good search performance, known-item searching, help-intensive searching, and relatively unsuccessful use. Their characteristics were interpreted and compared qualitatively. The analysis shows that each group had distinct patterns of use of the system, which justifies the methodology employed in this study
    Type
    a

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