Search (120 results, page 1 of 6)

  • × language_ss:"e"
  • × theme_ss:"Benutzerstudien"
  • × theme_ss:"OPAC"
  1. Wallace, P.M.: Periodical title searching in online catalogues (1997) 0.01 
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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
  2. Matthews, J.R.; Lawrence, G.S.; Ferguson, D.K.: Using online catalogs : a nationwide survey, a report of a study sponsored by the Council on Library Resources (1983) 0.01 
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    Classification
    AN 73400 Allgemeines / Buch- und Bibliothekswesen, Informationswissenschaft / Bibliothekswesen / Datenverarbeitung / Einsatz in der Katalogisierung
    RVK
    AN 73400 Allgemeines / Buch- und Bibliothekswesen, Informationswissenschaft / Bibliothekswesen / Datenverarbeitung / Einsatz in der Katalogisierung
  3. Kaske, N.K.: ¬A comparative study of subject searching in an OPAC among branch libraries of a university library system (1988) 0.01 
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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.
  4. Witt, M.: Survey on the use of the catalogue at the Mediatheque of the Cité des Sciences et de l'Industrie (CSI) (1993) 0.01 
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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
  5. Moulaison, H.L.: OPAC queries at a medium-sized academic library : a transaction log analysis (2008) 0.01 
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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
  6. Wallace, P.M.: How do patrons search the online catalog when no one's looking? : transaction log analysis and implications for bibliographic instruction and system design (1993) 0.01 
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    Abstract
    Describes a project which monitored electronically 11 public access terminals, at the Colorado University Librarys, to produce transaction logs that were used to gather statistics and analyze the behaviour of users when searching the library online catalogues. The study recorded user behaviour unobtrusively and focused exclusively on what actually occured during the search process. Among other findings it was revealed that the use of system supplied search aids varied, from low use of quick search and express search features, to more extensive use of search history and searching databases other than the home catalogue. Analysis of search results revealed that 66% of subject (keyword) and name searches produce 10 or fewer results, and 82% produce 25 or fewer titles, a manageable number for searchers to scan postings and spot relevant materials. User persistence in scanning titles was found to be high with the full list being requested for nearly 40% of searches netting up to 100 results. Overall, results show that emphasis on improved system design must be stressed if the needs of the majority of searchers are to be met more effectively
    Footnote
    Die hier angegebenen Zahlen stehen in Widerspruch zur Micco Studie; allerdings ist wohl auch die Ausgangslage eine andere, wenn hier Autoren- und Stichwortsuche mit in die Statistik einbezogen wurden
  7. Klugman, S.: Failures in subject retrieval (1989) 0.00 
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    Source
    Subject control in online catalogs. Ed.: R.P. Holley
  8. Gouke, M.N.; Pease, S.: Title searches in an online catalog and a card catalog : a comparative study of patron success in two libraries (1982) 0.00 
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  9. Larson, R.R.: ¬The decline of subject searching : long-term trends and patterns of index use in an online catalog (1991) 0.00 
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    Abstract
    Search index usage in a large university online catalog system over a six-year period (representing about 15,3 million searches) was investigated using transaction monitor data. Mathematical models of trends and patterns in the data were developed and tested using regression techniques. The results of the analyses show a consistent decline in the frequency of subject index use by online catalog users, with a corresponding increase in the frequency of title keyword searching. Significant annual patterns in index usage were also identified. Analysis of the transaction data, and related previous studies of online catalog users, suggest a number of factors contributing to the decline in subject search frequency. Chief among these factors are user difficulties in formulating subject queries with LCSH, leading to search failure, and the problem of "information overload" as database size increases. This article presents the models and results of the transaction log analysis, discusses the underlying problems with subject searching contributing to the observed decline, and reviews some proposed improvements to online catalog systems to aid in overcoming these problems
  10. Cherry, J.M.: Improving subject access in OPACs : an exploratory study of conversion of user queries (1992) 0.00 
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    Abstract
    In a study at the University of Toronto libraries, observers recorded protocols for 100 OPAC search sessions. This article reports on the analysis of these protocols, and examines zero-hit subject searches in particular to explore the the effectiveness of various conversions of users' queries to improve recall. Although the number of zero-hit subject searches analyzes was small, this exploratory study yielded some findings that merit consideration in efforts to improve subject access in OPACs.
  11. Park, I.: ¬A comparative study of major OPACs in selected academic libraries for developing countries : user study and subjective user evaluation (1997) 0.00 
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    Abstract
    Provides information on the characteristics of 5 online catalogue systems in 5 academic libraries in the austin, Texas and North Texas, USA, and their use by Korean students at University of North Texas, USA, in order to assist system managers in the selection of online catalogues. Proposes recommendations when designing, adopting, or managing a new online catalogue system. Topics for further studies on the characteristics of online systems and their use are also suggested
  12. Pasanen-Tuomainen, I.: Monitoring online catalogues in the Nordic technological university libraries (1992) 0.00 
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    Abstract
    NORDINFO financed project to evaluate OPACs from the end user's viewpoint began in Aug 91 and was aimed at discovering how different types of users carry out searches; how the different methods of describing a publication's contact are used; and evaluating how title, thesauri words and free text are combined in searching using the transaction log analysis method over a 6 week period. The results show that not even menus give enough guidance to an occasional user; free text searching was the most popular method; scan commands proved not popular. The number of searches retrieving no-references was similar in all libraries, while libraries differed in the truncated search terms. Multilingualism was a serious problem in all the online catalogues. Lists recommended improvements
  13. Pasanen-Tuomainen, I.: Evaluating the user education (1994) 0.00 
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    Abstract
    Desicusses the user training programme of the Helsinki University of Technology Library in the light of an internordic monitoring project. In the project, the use of OPACs was evaluated by analyzing the transaction logs and it was concluded that end users do not exploit the various possibilities of OPACs. A large part of the material found in the collections in the library is not retrieved: misspellings, lack of truncation, inequate use of Boolean operators and wrong database choices lead to ineffective retrieval. Emphasis in the online catalogue training has been on the 'hands on' exercises and it appears that the training programme is not very effective in the area of subject searching. Presents reasons for this and discusses plans for the future development of the library user training programme
  14. Pienaar, R.E.: Subject access in OPACs : results of a user survey in a university library (1994) 0.00 
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  15. Lewis, D.W.: Research on the use of online catalogs and its implications for library practice (1987) 0.00 
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    Abstract
    Research on the use of online catalogs has challenged many assumptions about the behavior of library users. It has demonstrated that many of the patterns of behavior observed in the use of card catalogs were adaptions to the card technology; often behavioral patterns are different in an online environment. These studies have indicated that patrons prefer online catalogs and use them more, but they also show inadequacies in bibliographic practice, especially in the area of subject access.
  16. Senzig, D.: Library catalogs for library users (1984) 0.00 
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    Abstract
    As librarians evaluate the capabilities of online catalogs they will need to consider what information users expect to find in the catalog and what characteristics of the catalog will help users in their search for this information. The findings of studies concerning how library users actually use card catalogs and online catalogs, and their successes and failures in that use, can be used to determine the capabilities that are needed in anonline catalog to satisfy the bibliographic requests of library users
  17. Markey, K.: Online catalog use : results of surveys and focus group interviews in several libraries (1983) 0.00 
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  18. Markey, K.: Subject searching in library catalogs : Before and after the introduction of online catalogs (1984) 0.00 
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  19. Solomon, P.: Children, technology, and instruction : a case study of elementary school children using an online public access catalog (OPAC) (1994) 0.00 
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    Abstract
    Reports on a study at an elementary school in Washington, DC examining pupils' use of an OPAC. Presents this within the overall instructional environment of the school in order to open a window on the broader interaction of children, technology, curriculum, instruction and learning. Explains the methodology used in the study, the findings of the study, and notes a number of conclusions. Focuses in particular on the patterns of success and failure of children's use of the OPAC, their search strategies and the nature of their interaction with the OPAC
  20. Pulis, N.V.; Ludy, L.E.: Subject searching in an online catalog with authority control (1988) 0.00 
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    Abstract
    Results of previous catalog research indicate that users want improvements in subject searching features, noting display of terms related to their topics as especially desirable. This study reports the findings of an examination of subject searchers' use of such a feature provided through online display of authority information from Library of Congress Subject Headings for terms used in the catalog. It was found that, of the terms entered by users, 78 percent were an exact or close match to catalog terms, and another 14 percent matched "see" references. Although additional information was available for nearly half of the searches performed, it was used in only 28 percent of these cases. It is suggested that improvements in subject searching features are needed to encourage use of available syndetic structures

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