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  • × theme_ss:"OPAC"
  1. Slack, F.: Subject searching in OPACs : a general survey of facilities available on OPACs in academic libraries in the UK (1988) 0.15 
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    Footnote
    Vgl. auch die neuere Studie: Crawford, J.C. et al.: A survey of subject access to academic library catalogues in Great Britain in: Journal of librarianship and information science 25(1993) no.2, S.85-93)
  2. Hufford, J.R.: Use studies and OPACs (1991) 0.15 
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    Abstract
    This article discusses the major catalog use studies that have been conducted in the United States and Great Britain. The potential to influence the construction of new online public access catalogs is emphasized. The cumulative findings could serve as an information base which designers of OPAC systems could refer to in the course of their work
  3. Crawford, J.C.; Thorn, L.C.; Powles, J.A.: ¬A survey of subject access to academic library catalogues in Great Britain : a report to the British Library Research and Development Department (1992) 0.10 
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  4. Crawford, J.C.; Thom, L.C.; Powles, J.A.: ¬A survey of subject access to academic library catalogues in Great Britain (1993) 0.09 
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    Abstract
    Reports results of a questionnaire survey of UK academic libraries to determine the level of use of online public access catalogues (OPACs) and the development of inhouse subject indexes. 75 respondents reported having commercial systems and 7 reported inhouse systems. Data includes: named systems in use and numbers of libraries using each system; percentages of bibliographic records in machine readable format; types of materials; and record formats (UKMARC, LCMARC etc.) Reports the most common access points for searching the OPACs (author, keyword), methods of generating terms to be used for subject searching, subject heading sources (LCSH, MeSH, PRECIS) and classification schemes (Dewey (DDC), UDC). Results show that all universities and polytechnics now have OPACs and only the smaller colleges do not. OPACs are moving towards comprehensive covergae of academic library stocks with the MARC record the most popular format. The 3 main subject access strategies involve: LCSH, inhouse strategies, and strategies not based on controlled terminolgy. Draws heavily on the results of an earlier survey by Fran Slack (Vine 72(1988) Nov., S.8.12)
  5. Clark, S.E.; Mischo, W.H.: Online public access catalog retrieval structures and techniques : with reference to recent developments in the United States and Great Britain (1992) 0.09 
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    Abstract
    Paper presented at the 14th biennal conf. of IATUL, Cambridge, Mass., USA, 8.-12.7.1991: new technologies and information services - evolution or revolution? Ed.: Jay K. Lucker and published by the British Library on behalf of IATUL. The provision of enhanced subject access and access to a wider variety of bibliographic resources for library users have been influenced by technology. This has occured throuigh advances in workstations, storage media, graphics, networks and search engines such as BRS/SEARCH. Presents the results of a study by the Council of Library Resources on online catalogues. Discusses access to the periodical literature, library workstations, the University of Illinois at Urbana-Champaign library's microcomputer workstation, the OKAPI search system for online catalogues and the Scottish Academic Libraries Bibliographic Information Network
  6. Uricchio, W.: From card catalog to OPAC : using CD-ROM to cross the great divide (1993) 0.09 
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    Source
    Computers in libraries. 13(1993) no.1, S.16-20
  7. Marcin, S.; Morris, P.: OPAC: the next generation (2008) 0.04 
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    Abstract
    In terms of record transportability, WorldCat Local offers patrons an individual account with the ability to mark, create lists, add notes to items, share lists with others, export and print lists, export directly to RefWorks, cite items with built-in citation styles at the item level, link to items with built-in durable URLs, which is great for direct linking from webpages, course pages, etc.
    Source
    Computers in libraries. 28(2008) no.5, S.6-
  8. Engle, M.: LITA Online Catalog Interest Group, American Library Association Conference, New Orleans, June 1993 (1994) 0.04 
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    Abstract
    Considers the current state of online catalogues and future directions in designing the next generation, addressing both the content and presentation of information in the catalogue. Reports on a user survey which identified the varieties of catalogue failure and users' recommendations for improvements. Suggests pragmatic solutions to problems posed by large retrieval sets and the tendencies of searchers of sophisticated systems to use only a few commands and to examine only the first few records in a large retrieval set. The chaotic and contradictory nature of the OPAC in a networked environment is characterized as 'a great disorder in an order'. Discusses paradoxes that confront both users and designers of future online catalogues
  9. Kreslins, K.; O'Brien, A.; Smith, I.A.: Online public access catalogues in Latvia : strategies for subject access (1994) 0.04 
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    Abstract
    Libraries in Latvia, as in other Easternm European countries, have begun implementing automated systems. Outlines the stae of automation in Latvian libraries and discusses the problems associated with providing subject access in their computerized catalogues. Discusses issues relating to subject searching and retrieval in Latvian online catalogues, makes recommendations for further progress in Latvian online catalogues in general and for subject access in particular. Also considers user education and general library concerns
  10. Burton, P.A.; Hawkins, A.M.: Attitudes to an online public access catalogue in an academic library (1993) 0.03 
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    Abstract
    Describes an investigation of attitudes to the LION (Library Integrated Online Network) online public access catalogue at Liverpool Polytechnic Library (now Liverpool John Moores University) using observation and a questionnaire survey of 55 library users. The reaction to the automation of the library catalogue was positive and it appears to have improved service to users but more user education and guidance would result in a further improvement
  11. Connell, T.H.: ¬The need for funded research (1992) 0.03 
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    Abstract
    Provides a brief summary of an OCLC funded project 'Identifying barriers to effective subject access in library catalogues'. The study investigated the probability that a skilled catalogue user would retrieve 'the best' materials on some subject, and if they were unable to do so, to determine how this could be improved. The transformation of the card catalogue onto an online database has not improved subject access. Offers a view of research in the context of the education and research roles of the library and information science educator. Discusses the university research environment, teaching students research skills and OCLC
  12. Basista, T.; Micco, M.H.; Rambler, L.: Designing the OPAC user interface to improve access and retrieval (1991) 0.03 
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    Abstract
    Describes the OPAC research project at Indiana University of Pennsylvania Library funded by the Council on Library Resources, and the US Department of Education, with technical assistance from Carlyle Systems, Inc. Places emphasis on the design of a user interface to improve access and retrieval, in large textual data bases. The hardware configuration is a NeXT system
  13. Ballard, T.; Lifshin, A.: Prediction of OPAC spelling errors through a keyword inventory (1992) 0.03 
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    Abstract
    In order to find and correct spelling errors in the online public access catalog at Adelphi University, a visual inspection was performed of the 117.000 keywords indexed in the system. More than 1.000 errors were found. Certain long but common words such as administration, education, and commercial were found to generate many different misspellings. Most of the records were derived from bibliographic utilities, so the findings can be generalized to other OPACs. The same misspellings were also found in substantial numbers in CD-ROM databases. Misspellings were analyzed by the machine-readable catalog (MARC) field in which they were found, part of speech, and type of mistake. Lists of commonly misspelled root words and specific mistakes are included
  14. Pasanen-Tuomainen, I.: Evaluating the user education (1994) 0.03 
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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
  15. Schauder, C.: Library of Congress Subject Heading reference structures and OPACs (1991) 0.03 
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    Abstract
    The provision of a comprehensive network of see and see also subject cross references has troubled cataloguers. Describes a survey in May 91 to explore Australian academic library practices with regard to the provision of cross references and perceptions of the importance of these in the light of OPAC searching capabilities. The study examines the provision of syndetic structure (hierarchical and related references) using LCSH. The study was limited to the appliation of LCSH in higher education, TAFE and state libraries with OPACs. Considers whether aspects pf LoC subject cataloguing policies and individual library practices are changing with the shift from the manual to the online environment. Offers labour-saving options tp provide user access to the syndetic structure of LCSH
  16. Bangalore, N.S.: Mystery names : plausible sounding names resulting in zero hits in OPACs (1996) 0.03 
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    Abstract
    Investigates the reasons for one category of zeor hit author searches - that of plausible but unverifiable names - encountered by end users of the NOTIS OPAC at the University of Illinois at Chicago. The names were not found in the national bibliographic utility (OCLC), the local database (LUIS), the local card catalogue, or large online files of journal articles (Wilson indexes). Concludes that, while the problem of user queries resulting in no retrievals cannot be entirely remedied, a number of things can be done to minimize the problem, including: putting in palce an international system to exchange authority data for names; simplification of cataloguing riles; a retrieval system that allows natural language best match retrieval, ranked output, relevance feedback, and other post Boolean techniques; expanded use of keyword searching; and user education
  17. Gillespie, T.: Reunderstanding McLuhan, multimedia and me (1993) 0.02 
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    Source
    Journal of education for library and information science. 34(1993) no.4, S.287-290
  18. Riesthuis, G.J.A.; Zumer, M.: FRBR and FRANAR : subject access (2004) 0.02 
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    Abstract
    In the last decade a discussion has been going an in the Division of Bibliographic Control of the International Federation of Library Associations and Institutions (IFLA) about the principles of cataloguing. This discussion was initiated by the widespread replacement of the card and list catalogues by Online Public Access Catalogues (OPACs) since 1980. In this paper we discuss the role of subject cataloguing in three important documents that are the results of this discussion. Our conclusion is that the interest in subject cataloguing has grown remarkably, but is still not an the level it deserves given the fact that a great part of all searches in OPACs are subject oriented.
    Content
    1. Introduction In this paper we address two questions: 1. What is the position of subject indexing in the thinking of the library world after the publication of the Functional Requirements for Bibliographic Records (1998)? 2. Is this position in accordance with the requirements of the users searching for documents about a given subject? Research Shows that searching an a topic (i.e. subject access) is an important, even predominant type of end-user searching of library catalogues and even more so of other bibliographic databases. Between one third and two thirds of all OPAC searches are probably subject searches (Large & Beheshti, 199%). Taking into account different ways in which searching an a topic is implemented in library catalogues (subject headings, classification, keywords only) the percentage may be even higher. For example title word searching may be a substitute for subject searching if no better tools are available. In the light of this it is not surprising that the Functional Requirements for Bibliographic Records (FRBR) (1998) pays attention to subject searching, as well as the Functional Requirements and Numbering of Authority Records (FRANAR) (2003). Also the Statement of International Cataloguing Principles: Final draft of 19 December 2003, which is the result of the first First IFLA Meeting of Experts an an International Cataloguing Code mentiong subject access as a function of cataloguing (Statement, 2003). In this paper we discuss the ways these three documents deal with subjects.
    Series
    Advances in knowledge organization; vol.9
  19. Pejtersen, A.M.; Jensen, H.; Speck, P.; Villumsen, S.; Weber, S.: Catalogs for children : the Book House project on visualization of database retrieval and classification (1993) 0.02 
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    Abstract
    This paper describes the Book House system which is designed to support children's information retrieval in libraries as part of their education. It is a shareware program available on CD-ROM and discs, and comprises functionality for database searching as well as for the classification and storage of book information in the database. The system concept is based on an understanding of children's domain structures and their capabilities for categorization of information needs in connection with their activities in public libraries, in school libraries or in schools. These structures are visualized in the interface by using metaphors and multimedia technology. Through the use of text, images and animation, the Book House supports children - even at a very early age - to learn by doing in an enjoyable way which plays on their previous experiences with computer games. Both words and pictures can be used for searching; this makes the system suitable for all age groups. Even children who have not yet learned to read properly can by selecting pictures search for and find books they would like to have read aloud. Thus at the very beginning of their school period, they can learn to search for books on their own. For the library community itself, such a system will provide an extended service which will increase the number of children's own searches and also improve the relevance, quality and utilization of the collections in the libraries. A market research on the need for an annual indexing service for books in the Book House format is in preparation by the Danish Library Center
  20. Borgman, C.L.; Hirsh, S.G.; Walter, V.A.; Gallagher, A.L.: Childrens searching behavior on browsing and keyword online catalogs : the Science Library Catalog project (1995) 0.02 
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    Abstract
    As we seek both to improve public school education in high technology areas and to link libraries and classrooms on the 'information superhighway', we need to understand more about children's information searching abilities. We present results of 4 experiments conducted on 4 versions of the Science Library Catalog (SLC), a Dewey Decimal based hierarchical browsing systems implemeted in HyperCard without a keyboard. The experiments were conducted over a 3-year period at 3 sites, with 4 databases, and with comparisons to 2 different keyword online catalogs. Subjects were ethnically and culturally diverse children aged 9 through 12; with 32 to 34 children participating in each experiment. Children were provided explicit instruction and reference materials for the keyword systems but not for the SLC. The number of search topics matched was comparable across all systems and all experiments; search times were comparable, thought hey varied among the 4 SLC versions and between the 2 keyword OPACs. The SLC overall was robust to differences in age, sex and computer experience. One of the keyword OPACs was subject to minor effects of age and computer experience; the other was not. We found relationships between search topic and system structure, such that the most difficult topics on the SLC were those hard to locate in the hierarchy, and those most difficult on the keyword OPACs were hard to spell or required children to generate their own search terms. The SLC approach overcomes problems with several searching features that are difficult for children in typical keyword OPAC systems; typing skills, spelling, vocabulary, and Boolean logic. Results have general implications for the desing of information retrieval systems for children

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