Search (29 results, page 1 of 2)

  • × theme_ss:"OPAC"
  • × type_ss:"a"
  • × year_i:[2000 TO 2010}
  1. Horn, M.E.: "Garbage" in, "refuse and refuse disposal" out : making the most of the subject authority file in the OPAC (2002) 0.05 
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    Abstract
    Subject access in the OPAC, as discussed in this article, is predicated on two different kinds of searching: subject (authority, alphabetic, or controlled vocabulary searching) or keyword (uncontrolled, free text, natural language vocabulary). The literature has focused on demonstrating that both approaches are needed, but very few authors address the need to integrate keyword into authority searching. The article discusses this difference and compares, with a query on the term garbage, search results in two online catalogs, one that performs keyword searches through the authority file and one where only bibliographic records are included in keyword searches.
    Date
    10. 9.2000 17:38:22
  2. Lam, V.-T.: Enhancing subject access to monographs in Online Public Access Catalogs : table of contents added to bibliographic records (2000) 0.04 
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    Date
    22. 9.1997 19:16:05
  3. Li, Y.-O.; Leung, S.W.: Computer cataloging of electronic Journals in unstable Aggregator Databases the Hong Kong Baptist University Library experience (2001) 0.04 
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    Abstract
    The growth and use of aggregator databases have presented libraries with both new opportunities for collection enhancement and new challenges of bibliographic control. How to integrate full-text electronic journal titles in unstable aggregator databases into a library's OPAC (Online Public Access Catalog) has been an especially taxing matter for libraries. This article describes the Hong Kong Baptist University Library's effort to integrate full-text electronic journal titles from three large, unstable aggregator databases into its INNOPAC-based OPAC. The library's electronic journal computer program (EJCOP) does this in a simple, direct, consistent, and accurate manner and addresses some of the issues elaborated in the January 2000 Final Report of the Task Group on Journals in Aggregator Databases of the Standing Committee on Automation of the Library of Congress Program for Cooperative Cataloging.
    Date
    10. 9.2000 17:38:22
  4. Thomas, D.H.: ¬The effect of interface design on item selection in an online catalog (2001) 0.04 
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    Abstract
    The effect that content and layout of bibliographic displays had on the ability of end-users to process catalog information was tested using a 2 x 2 factorial experimental design. Participants were asked to perform two related tasks during the course of the experiment. In the first task, they were asked to select a set of items that they would examine further for a hypothetical paper they must write, using a simulated online catalog to make their assessments of relevance. In the second task, they were asked to examine 20 bibliographic records, decide whether they would choose to examine these items further on the shelf, and identify the data elements that they used to formulate their relevance decision. One group viewed bibliographic records on an interface similar to current online catalogs, one that used data labels and contained data elements commonly found. A second group viewed these records on an interface in which the labels had been removed, but the data elements were the same as those in the first. The third group viewed these records on a labeled display that included enhanced data elements on the brief record display. The final group viewed these records with the same brief record data elements as the third group, but with the labels removed, using ISBD and AACR2 punctuation standards. For the first task, participants using enhanced brief screen interfaces viewed more brief screens and fewer full screens than their counterparts. Screen durations for the second 10 screens were found to have dropped from those of the first 10 screens. Statistical analyses comparing demographic variables to the screen frequencies uncovered many significant differences. Participants using the enhanced-content interfaces made fewer selections from index and full screens, and more selections from brief screens. For the second task, participants who used enhanced-content interfaces were able to make some sort of relevance judgment more frequently than those who used standard-content interfaces.
    Date
    10. 9.2000 17:38:22
  5. Fattahi, R.; Parirokh, M.: Restructuring the bibliographic record for better organization, management, and representation of knowledge in the global online environment : a new spproach (2003) 0.03 
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    Abstract
    The computer technology has considerable potential for better and more efficient management of knowledge and information sources. It is possible to provide easy, integrated and straightforward access to works of knowledge appearing in different expressions, editions, and manifestations (i.e., to bibliographic families). The online environment requires that the bibliographic record, as the surrogate for works of knowledge, should be restructured to provide users with a high-quality finding, identifying and collocating bibliographic tool. Unlike the existing flat structure, the multi-level structure of the Work Record would provide catalog users with the ability to discover if a work has been published/represented in different editions and manifestations and if there is any relationship among different works in a catalog or an the Internet. A similar structure for the Author Record would provide better access to different works by an author or about an author. A new structure for the bibliographic record is suggested through an analysis and categorization of the different relationships that exist in the bibliographic universe. A prototype catalogue developed based an the new structure (available an the Internet at: http://wilma.silas.unsw.edu.au/ students/rfattahi/super.html) illustrates the ability of providing multi-level, yet easy access to voluminous works and voluminous authors. Furthermore, the prototype catalog provides a clearer picture of bibliographic families and helps OPAC users decide an specific editions, manifestations, or items related to a specific work.
  6. Herrero Solana, V.; Moya Anegon, F. de: Bibliographic displays of Web-based OPACs : multivariate analysis applied to Latin-American catalogues (2001) 0.02 
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  7. Gorman, M.: From card catalogues to WebPACs : celebrating cataloguing in the 20th century (2000) 0.02 
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    Source
    Conference on Bibliographic Control for the New Millennium held in Washington, DC at the Library of Congress, November 2000
  8. Vandenburg, M.: Using Google maps as an interface for the library catalogue (2008) 0.02 
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    Abstract
    Purpose - The paper aims to describe a proof of concept web application designed to allow users to search for library materials with geographic subject headings using Google Maps as the primary interface for navigation. The purpose of the paper is to describe the development of an innovative tool that one library has created to provide users with a new way to access bibliographic records. Design/methodology/approach - The approach taken is descriptive, with the development process for the proof of concept laid out in detail and placed it within the broader contexts of web application development at the host library and the emergence of Web 2.0 tools. Findings - The paper shows that unique and valuable new methods of accessing bibliographic data can be created through the use of application programming interfaces (APIs), one of the more powerful tools available to web application developers today. Research limitations/implications - Challenges of working with geographic information in subject headings of bibliographic records are discussed, and potential methods for dealing with these challenges are described. Originality/value - The paper shows that it is possible to use APIs provided by large internet entities such as Google to create map based navigational tools for accessing bibliographic information. It also shows the value of allowing library systems staff to explore new technologies.
  9. Miller, D.H.: User perception and the online catalogue : public library OPAC users "think aloud" (2004) 0.02 
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    Abstract
    The paper presents findings based on user feedback and opinion of online public access catalogues as tools for finding, identifying, and selecting bibliographic materials in a public library setting. Participants spoke their thoughts aloud while conducting known-item searches. The findings describe an iterative process of action, observation, identification, and emotion.
    Content
    1. Introduction Significant research in the design and use of online public access catalogues (OPACs) has been conducted by professionals in library and information science (Borgman, 1996; Carlyle, 2001, Carlyle & Timmons, 2002; Hancock, 1987). However, only limited research has addressed actual library user interaction with and perceptions of online catalogue displays and bibliographic elements (Abrera, 1986; Luk, 1996; Markey, 1983). Retrieval systems, specifically online library catalogues, should consider user perceptions and expectations as an important aspect of design and implementation for improved catalogue efficiency (Hert, 1996). Therefore, it is necessary to examine the online catalogue from a user perspective to determine if it is currently succeeding in meeting the bibliographic needs of users in terms of description, display, navigation, and to provide principles for design of future OPACs. A study seeking to understand better how public library users interact with general OPAC displays and the more specific displays of bibliographic information was conducted in 2003. Research questions focused an 1) user perceptions of the OPAC, 2) the elements in a bibliographic display standing out as most important in selection and identification, and 3) user feedback an the process of using the OPAC. The purpose of this paper is to highlight the larger study findings having implications for future research and online catalogue design.
  10. Byrum, J.D. Jr.: Recommendations for urgently needed improvement of OPAC and the role of the National Bibliographic Agency in achieving it (2005) 0.02 
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    Abstract
    Today's information seekers have been conditioned by Web search engines to expect immediate gratification as the result of user-friendly Web experiences. In contrast, it is increasingly apparent that traditional library OPACs do not provide the same ease of use or access to information. National Bibliographic Agencies (NBAs) and libraries everywhere need to respond to this discrepancy by initiating measures to enrich their databases and bibliographic products with much more information than is currently captured in records for resources. At the same time, NBAs must address the need for a new generation of OPACs that offers significantly enhanced functionality, much of which can be based on standard features of Web search engines and online bookstores. In view of alternatives available to information seekers, these needs require immediate attention if NBAs and libraries are to retain the support of satisfied users into the 21 st century. This paper offers specific recommendations to assist them in identifying and implementing appropriate responses.
  11. Carlyle, A.; Summerlin, J.: Transforming catalog displays : records clustering for works of fiction (2000) 0.02 
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    Abstract
    Displays grouping retrieved bibliographic record sets into categories or clusters may communicate search results more quickly and effectively to users than current catalogs providing long alphabetical lists of records. In this research, automatic clustering based on types of relationships, including translation, presence of illustrations, etc., is proposed as a model for clustering. Bibliographic records associated with three large fiction works (Kidnapped by Robert Lewis Stevenson, Bleak House by Charles Dickens, and Three Musketeers by Alexandre Dumas) are analyzed to discover the presence of relationship-type indicators to determine the extent to which an automatic clustering program would succeed in clustering work records. Preliminary results show that 94 percent of the records in this study contained indicators of cluster type that would allow them to be correctly identified automatically
  12. Zumer, M.; Riesthuis, G.J.A.: Consequences of implementing FRBR : are we ready to open pandora's box? (2002) 0.02 
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    Abstract
    The study Functional Requirements for Bibliograpbic Records (FRBR) was commissioned by IFLA and published in 1998. It defines the core functions of a catalogue (and bibliographic records) as a gateway to information. For that purpose an abstract entity-relationship model of a catalogue is proposed. The FRBR model is revolutionary. The (computer) catalogue is not seen as a sequence of bibliographic records and a replica of the traditional card catalogue, but rather as a network of connected entities, enabling the user to perform seamlessly all the necessary functions. So far there has been some theoretical discussion of the model and some limited experiments, but there is a lack of research in how to implement this theoretical model in practice, in new-generation catalogues. In this paper some reactions to the model are analysed. The main focus is an consequences of the model for the OPAC interface design, particularly the searching functionality and display of results.
  13. 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.
  14. Hildreth, C.R.: Are Web-based OPACs more effective retrieval systems than their conventional predecessors? : an experimental study (2000) 0.01 
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    Abstract
    The World Wide Web (simplified here to "Web") is well-known for its "point and click" graphical user interface (GUI) and hyperlink search and navigate capabilities. When OPACs are placed in this operational context, users can easily hyperlink from a bibliographic display to related search terms, class marks, or bibliographic records. This hyperlinking capability is not available in most conventional text-based OPACs. As more and more users undertake their searches on Web-based information retrieval systems such as OPACs, it is natural to ask, "Are Web-based OPACs more effective retrieval systems than their conventional predecessors?" This paper presents the findings of an experimental study which compared users' search performance, assessments of ease of use, and satisfaction with search results after use of a Web OPAC or its conventional counterpart. The primary questions addressed by this research center on the influence of two experimental factors, OPAC search interface style and search task level of difficulty, on the dependent variables: actual search performance, perceptions of ease of use, and user assessments of satisfaction with search results. It was hypothesized that Web OPACs would be assessed as easier to use and that they would outperform conventional OPACs when measured by actual search results and users' levels of satisfaction with search results. Web OPAC searchers outperformed Text OPAC searchers, but search task level of difficulty is a major determinant of search success. The study also found little association between searchers' level of satisfaction with results and actual search performance
  15. Mi, J.; Weng, C.: Revitalizing the library OPAC : interface, searching and display challenges (2008) 0.01 
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    Abstract
    The behavior of academic library users has drastically changed in recent years. Internet search engines have become the preferred tool over the library online public access catalog (OPAC) for finding information. Libraries are losing ground to online search engines. In this paper, two aspects of OPAC use are studied: (1) the current OPAC interface and searching capabilities, and (2) the OPAC bibliographic display. The purpose of the study is to find answers to the following questions: Why is the current OPAC ineffective? What can libraries and librarians do to deliver an OPAC that is as good as search engines to better serve our users? Revitalizing the library OPAC is one of the pressing issues that has to be accomplished.
  16. Schallier, W.: On the razor's edge : between local and overall needs in knowledge organization (2004) 0.01 
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    Content
    1. One Institution, one catalogue, one solution? K.U.Leuven University Library has a decentralised structure consisting of several department libraries and one central library. It is part of LIBIS-net, which is the biggest network of academic libraries in Belgium. In this network, maintaining the balance between local and overall needs presents a constant challenge. Standards and overall rules in cataloguing are indispensable for permitting information exchange within and outside the network. On the other hand, overall solutions do not necessarily render the best service to the user of a specific library. This is especially the case for subject cataloguing. It is difficult, and perhaps unreasonable, to convince a department library to use a generally accepted thesaurus like LCSH, if the users are familiar with a local classification that is much better adapted to the collection. The DOBIS/LIBIS library system of K.U.Leuven offered a technical solution for the conflict between overall and local needs. The main part of the bibliographic description was stored an the overall level and was visible for the whole network. For subject cataloguing this was the case for UDC, LCSH and McSH. A UDC authority file was built containing UDC codes linked to descriptors in different languages (Dutch, English and French). The authority file was linked to the UDC codes used in the bibliographic descriptions. This permitted searching by either UDC codes or verbal terms. LCSH were regularly and automatically uploaded in the catalogue to enrich the bibliographic descriptions. Finally, our Library of Biomedical Sciences used McSH. Local information, like thesauri and classifications exclusively used in a specific library, were stored in local files ("local keywords") and could only be seen by that library (up to branch level). For many years, this local information posed no difficulties. 27.04% of all documents and 38.16% of those younger than 1992 have local keywords
  17. Schneider, R.: OPACs, Benutzer und das Web (2009) 0.01 
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    Date
    22. 2.2009 18:50:43
  18. Poo, D.C.C.; Khoo, C.S.G.: Online Catalog Subject Searching (2009) 0.01 
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    Abstract
    The Online Public Access Catalog (OPAC) is an information retrieval system characterized by short bibliographic records, mainly of books, journals, and audiovisual materials available in a particular library. This, coupled with a Boolean search interface and a heterogeneous user population with diverse needs, presents special problems for subject searching by end users. To perform effective subject searching in the OPAC system requires a wide range of knowledge and skills. Various approaches to improving the OPAC design for subject searching have been proposed and are reviewed in this entry. The trend toward Web-based OPAC interfaces and the developments in Internet and digital library technologies present fresh opportunities for enhancing the effectiveness of the OPAC system for subject searching.
  19. Beccaria, M.; Scott, D.: Fac-Back-OPAC : an open source interface to your library system (2007) 0.01 
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    Date
    17. 8.2008 11:22:47
  20. Moulaison, H.L.: OPAC queries at a medium-sized academic library : a transaction log analysis (2008) 0.01 
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    Date
    10. 9.2000 17:38:22

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