Search (94 results, page 1 of 5)

  • × theme_ss:"OPAC"
  • × year_i:[2000 TO 2010}
  1. Slone, D.J.: ¬The influence of mental models and goals on search patterns during Web interaction (2002) 0.03 
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    Abstract
    Thirty-one patrons, who were selected by Slone to provide a range of age and experience, agreed when approached while using the catalog of the Wake County library system to try searching via the Internet. Fifteen searched the Wake County online catalog in this manner and 16 searched the World Wide Web, including that catalog. They were subjected to brief pre-structured taped interviews before and after their searches and observed during the searching process resulting in a log of behaviors, comments, pages accessed, and time spent. Data were analyzed across participants and categories. Web searches were characterized as linking, URL, search engine, within a site domain, and searching a web catalog; and participants by the number of these techniques used. Four used only one, 13 used two, 11 used three, two used four, and one all five. Participant experience was characterized as never used, used search engines, browsing experience, email experience, URL experience, catalog experience, and finally chat room/newsgroup experience. Sixteen percent of the participants had never used the Internet, 71% had used search engines, 65% had browsed, 58% had used email, 39% had used URLs, 39% had used online catalogs, and 32% had used chat rooms. The catalog was normally consulted before the web, where both were used, and experience with an online catalog assists in web use. Scrolling was found to be unpopular and practiced halfheartedly.
    Date
    21. 7.2006 11:26:29
  2. Moulaison, H.L.: OPAC queries at a medium-sized academic library : a transaction log analysis (2008) 0.02 
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    Date
    10. 9.2000 17:38:22
  3. Harmsen, B.: Adding value to Web-OPACs (2000) 0.01 
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    Date
    28. 3.2002 10:08:29
  4. Schneider, R.: OPACs, Benutzer und das Web (2009) 0.01 
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    Abstract
    Der Artikel betrachtet anhand einer Studie zum Benutzerverhalten bei der Online-Katalogrecherche den gegenwärtigen Stellenwert und das zukünftige Potential der Web-OPACs. Dabei werden zunächst die Ergebnisse einer quantitativen Logfile-Analyse sowie qualitativer Benutzertests erörtert, bevor aktuelle Entwicklungen der Webtechnologie, die unter den Schlagworten Web 2.0 und Web 3.0 propagiert werden, im Zusammenhang mit der Online-Recherche und der Entwicklung neuartiger Suchverfahren kurz diskutiert werden.
    Date
    22. 2.2009 18:50:43
  5. BOND: Web-Opac Premium (2004) 0.01 
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    Content
    "Orientiert an den Anforderungen der Bibliotheksbenutzer, hat BOND nun eine PremiumVersion des Web-Opacs entwickelt. Ziel dabei war es, das Angebot der Bibliothek für ihre LeserInnen noch attraktiver zu gestalten. Im Mittelpunkt steht dabei das tatsächliche Informationsverhalten der Bibliotheksbenutzer. Mit dem neuen Web-Opac Premium werden Informationen kanalisiert und so aufbereitet, dass die LeserInnen sie noch schneller und bequemer im Zugriffhaben. Neben den Standard WebOpac-Funktionen (recherchieren, verlängern, vorbestellen, etc.) ist der neue Web-Opac Premium daher zusätzlich mit zahlreichen nützlichen Web-Portalfunktionen gespickt. Diese ermöglichen der Bibliothek, ihren LeserInnen ganz individuell gewünschte Informationen und eine Vielzahl attraktiver Services anzubieten. Beispiele für die Portalfunktionen: Mit dem Web-Opac Premium können die Leser einfach und übersichtlich in hochwertigen Allgemein- und Fach-Lexika suchen. Jeder Benutzer kann sich ein persönliches Interessen-Profil selbst erstellen. So wird er gesondert auf die für ihn interessanten Medien und Informationen hingewiesen. Das persönliche Profil zeigt unter anderem auch entliehene Medien, Fristen und Gebühren. Als weiteren Service kann die Bibliothek automatisch Medien-Listen mit personalisierten Empfehlungen für ihre Benutzer (je nach Interessen-Profil) erstellen. Über eine Verwaltungsoberfläche kann die Bibliothek zudem globale Profile festlegen, mit denen zum Beispiel Erwachsene andere Informationen im Zugriff haben als Kinder oder wiederum andere als Mitarbeiter. Über diese Verwaltungsoberfläche können auch kinderleicht attraktive Informationsquellen (kommentierte Linklisten, gestaltete Informationsseiten [HTML], Veranstaltungskalender, Neuigkeiten, Diskussionsforen etc.) eingebunden und aktualisiert werden. Der Web-Opac Premium lässt sich durch zusätzliche Web-Module erweitern. So zum Beispiel durch WebGate, den Zugang zur DigiBib (Digitale Bibliothek des HBZ), und durch SpiderSearch, den grafischen Assoziativ-Opac. So kann sich jede Bibliothek ihr individuelles »Informationszentrum Bibliothek« bauen. - Weitere Informationen bei BOND, Telefon 0 63 24/9612311, oder E-Mail <vertrieb@ bond-online.de>."
    Date
    11. 6.2004 13:57:29
  6. Oberhauser, O.: Teil 2: Ergebnisse der Befragung : Web-Umfrage zur Benutzung von Card-Image Online-Katalogen (2002) 0.01 
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    Date
    29. 9.2002 14:56:21
  7. Blosser, J.; Michaelson, R.; Routh. R.; Xia, P.: Defining the landscape of Web resources : Concluding Report of the BAER Web Resources Sub-Group (2000) 0.01 
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    Abstract
    The BAER Web Resources Group was charged in October 1999 with defining and describing the parameters of electronic resources that do not clearly belong to the categories being defined by the BAER Digital Group or the BAER Electronic Journals Group. After some difficulty identifying precisely which resources fell under the Group's charge, we finally named the following types of resources for our consideration: web sites, electronic texts, indexes, databases and abstracts, online reference resources, and networked and non-networked CD-ROMs. Electronic resources are a vast and growing collection that touch nearly every department within the Library. It is unrealistic to think one department can effectively administer all aspects of the collection. The Group then began to focus on the concern of bibliographic access to these varied resources, and to define parameters for handling or processing them within the Library. Some key elements became evident as the work progressed. * Selection process of resources to be acquired for the collection * Duplication of effort * Use of CORC * Resource Finder design * Maintenance of Resource Finder * CD-ROMs not networked * Communications * Voyager search limitations. An unexpected collaboration with the Web Development Committee on the Resource Finder helped to steer the Group to more detailed descriptions of bibliographic access. This collaboration included development of data elements for the Resource Finder database, and some discussions on Library staff processing of the resources. The Web Resources Group invited expert testimony to help the Group broaden its view to envision public use of the resources and discuss concerns related to technical services processing. The first testimony came from members of the Resource Finder Committee. Some background information on the Web Development Resource Finder Committee was shared. The second testimony was from librarians who select electronic texts. Three main themes were addressed: accessing CD-ROMs; the issue of including non-networked CD-ROMs in the Resource Finder; and, some special concerns about electronic texts. The third testimony came from librarians who select indexes and abstracts and also provide Reference services. Appendices to this report include minutes of the meetings with the experts (Appendix A), a list of proposed data elements to be used in the Resource Finder (Appendix B), and recommendations made to the Resource Finder Committee (Appendix C). Below are summaries of the key elements.
    Date
    21. 4.2002 10:22:31
  8. Cooper, M.D.: Usage patterns of a Web-based library catalog (2001) 0.01 
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    Abstract
    This article reports on a model and patterns of use of a library catalog that can be accessed through the Internet. Three categories of users are identified. individuals who perform a search of the catalog, tourists who look only at opening pages of the library catalog's site, and Web spiders that come to the site to obtain pages for indexing the Web. A number of types of use activities are also identified, and can be grouped with the presearch phase (which takes place before any searching begins): the search phase, the display phase (in which users display the results of their search), and phases in which users make errors, ask the system for help or assistance, and take other actions. An empirical investigation of patterns of use of a university Web-based library catalog was conducted for 479 days. During that period, the characteristics of about 2.5 million sessions were recorded and analyzed, and usage trends were identified. Of the total, 62% of the sessions were for users who performed a search, 27% were from spiders, and 11% were for tourists. During the study period, the average search session lasted about 5 minutes when the study began and had increased to about 10 minutes 16 months later. An average search consisted of about 1.5 presearch actions lasting about 25 seconds, about 5.3 display actions, and 2.5 searches per session. The latter two categories are in the range of 35-37 seconds per session each. There were major differences in usage (number of searches, search time, number of display actions, and display time), depending upon the database accessed
    Date
    29. 9.2001 13:59:04
  9. Studie zum Web-OPAC der Stadtbibliothek Greven : ein neues Bibliothekssystem für kleine und mittlere Bibliotheken (2004) 0.01 
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    Abstract
    Eine Studie des Instituts für Wirtschaftsinformatik der Westfälischen Wilhelms-Universität Münster beurteilte den Online-Katalog (Web-OPAC von BOND) der Stadtbibliothek Greven als besonders gut gelungen. Die Studie beleuchtete die Online-Auftritte der 70 Kommunen des Münsterlandes hinsichtlich der elektronischen Bürgerdienste. Bewertet wurden neben dem allgemeinen Erscheinungsbild der kommunalen Web-Seiten vor allem die Qualität der bereitgestellten Bürgerdienste in den Bereichen Strukturiertheit, Entwicklungsgrad, Navigation und Bürgerfreundlichkeit. Die Ergebnisse der Studie wurden am 12. Februar 2004 in Münster vorgestellt. Die Stadtbibliothek Greven setzt seit Dezember 2002 den Web-OPAC von BOND ein. Via Internet können die Benutzer der Bibliothek von zu Hause aus recherchieren, Medien vorbestellen und verlängern. Auf BIBLIOTHECA2000 vertraut die Grevener Bibliothek bereits seit 1998 und meldet Jahr für Jahr steigende Ausleihzahlen. Im Jahr 2003 stieg die Ausleihe um 3,5% auf 286.866 Medien. Jedes Medium wurde damit im Durchschnitt 7 mal im Jahr ausgeliehen. In den vergangenen 10 Jahren haben sich die Ausleihen sogar verdoppelt (+ 102%). Eine neue Lichtschranke am Eingang zählte 130.506 Besucher im Jahr 2003. Auch diese Zahl belegt die hohe Akzeptanz, die die Stadtbibliothek in Greven hat. Die höchsten Zuwachsraten (+ 196%) gibt es bei der Ausleihe von Kinder- und Jugendbüchern. Dieser Anstieg ist sogar deutlich höher als der der AV-Medien.
    Date
    10. 6.2004 18:15:29
  10. 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.
  11. Marchitelli, A.; Piazzini, T.: OPAC, SOPAC e social networking : cataloghi di biblioteca 2.0? (2008) 0.01 
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    Abstract
    In this article are compared traditional OPAC systems, enriched OPAC, social OPAC and social cataloguing systems.the aim is to underline new theoretical trends and to offer a taxonomic outline of such tools, according to the interaction level granted to users and to the chance to manage user's generated contents in the point of view of the application of web 2.0 tendecies to libraries, in the library 2.0. At the end, a brief review of softwares, both open source and not, that seem promising for this future application.
    Date
    29. 1.1996 17:18:10
  12. Hahn, U.; Schulze, M.: Katalogerweiterungen, Mashups und Elemente der Bibliothek 2.0" in der Praxis : der Katalog der Universitätsbibliothek der Helmut-Schmidt-Universität (IHSU) Universität der Bundeswehr Hamburg (2009) 0.01 
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    Abstract
    Die verschiedenen unter dem Schlagwort "Bibliothek 2.0" zusammengefassten neuen Dienste und Komponenten wie etwa Wikis, Tagging-Systeme und Blogs sind seit einiger Zeit in aller Munde und dringen über Fortbildungsveranstaltungen, Konferenzen und Publikationsorgane immer mehr in das deutschsprachige Bibliothekswesen ein. Darüber hinaus gibt es öffentlich geförderte Projekte zu bibliothekarischen 2.0-Themen und sogar ein Projekt, welches sich explizit einen 2.0-Katalog zum Ziel gesetzt hat. In diesem Beitrag soll es nun nicht um die Vorstellung eines weiteren Projekts im Dienste des Themas "Bibliothek 2.0" gehen, ebenso hat dieser Beitrag nicht den Anspruch, die Diskussion über die möglichen Vor- oder Nachteile dieser Thematik auf theoretischer Ebene voranzubringen. Vielmehr wird hier ganz praktisch aus Sicht einer kleinen Universitätsbibliothek, der Bibliothek der Helmut-SchmidtUniversität (HSU) - Universität der Bundeswehr Hamburg, aufgezeigt, wie das Thema "Web/Bibliothek 2.0" durchaus neben und in Unterstützung von weiteren nutzerorientierten Servicedienstleistungen auch in kleinen Schritten positive Auswirkungen für die Nutzerinnen und Nutzer haben kann. Der Focus wird dabei auf dem zentralen Arbeits- und Rechercheinstrument der Bibliotheksnutzer liegen, dem Bibliothekskatalog. Speziell wird es darum gehen, wie auf relativ einfache Art und Weise durch Anwendung verschiedener Elemente anderer Dienste und Anbieter sowie das Aufgreifen von Schnittstellen und wenig aufwendigen Verbesserungen, Mehrwert für die Nutzerinnen und Nutzer zu erzielen ist. Ein zentraler Begriff bei fast allen Überlegungen, die im Zusammenhang mit der Verbesserung und Anreicherung des Kataloges stehen, war und ist das Thema "Mash-up". Unter Mashups - ein Begriff, der gerade im Zusammenhang mit dem Thema "Web 2.0" im deutschsprachigen Raum eingeführt und adaptiert wurde - wird das Verfahren bezeichnet, Web-Inhalte neu zu kombinieren. Dabei nutzt man bei und für Mashups offene "APIs" (Application Programming Interfaces, also offene Programmierschnittstellen), die von anderen Web-Anwendungen zur Verfügung gestellt werden.
    Date
    22. 2.2009 19:40:38
  13. 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
    Date
    29. 9.2001 18:36:03
  14. Long, C.E.: Improving subject searching in Web-based OPACs : evaluation of the problem and guidelines for design (2000) 0.01 
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    Abstract
    Online catalog users search predominately by subject, yet it is the most difficult search to perform and retrieves records only about one-half of the time. A new generation of OPACs (online public access catalogs) is on the horizon, the Web-based OPAC. Web-based OPACs allow users to access online catalogs through a WWW (World Wide Web) interface and have the potential to improve patrons' ability to search by subject. But will this potential be realized? This article proposes some basic guidelines that can be incorporated into Web-based OPAC interface design to help users perform subject searches more effectively, and evaluates how well Web-based OPACs currently in operation address the subject searching problem
  15. Khoo, C.S.G.; Wan, K.-W.: ¬A simple relevancy-ranking strategy for an interface to Boolean OPACs (2004) 0.01 
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    Content
    "Most Web search engines accept natural language queries, perform some kind of fuzzy matching and produce ranked output, displaying first the documents that are most likely to be relevant. On the other hand, most library online public access catalogs (OPACs) an the Web are still Boolean retrieval systems that perform exact matching, and require users to express their search requests precisely in a Boolean search language and to refine their search statements to improve the search results. It is well-documented that users have difficulty searching Boolean OPACs effectively (e.g. Borgman, 1996; Ensor, 1992; Wallace, 1993). One approach to making OPACs easier to use is to develop a natural language search interface that acts as a middleware between the user's Web browser and the OPAC system. The search interface can accept a natural language query from the user and reformulate it as a series of Boolean search statements that are then submitted to the OPAC. The records retrieved by the OPAC are ranked by the search interface before forwarding them to the user's Web browser. The user, then, does not need to interact directly with the Boolean OPAC but with the natural language search interface or search intermediary. The search interface interacts with the OPAC system an the user's behalf. The advantage of this approach is that no modification to the OPAC or library system is required. Furthermore, the search interface can access multiple OPACs, acting as a meta search engine, and integrate search results from various OPACs before sending them to the user. The search interface needs to incorporate a method for converting the user's natural language query into a series of Boolean search statements, and for ranking the OPAC records retrieved. The purpose of this study was to develop a relevancyranking algorithm for a search interface to Boolean OPAC systems. This is part of an on-going effort to develop a knowledge-based search interface to OPACs called the E-Referencer (Khoo et al., 1998, 1999; Poo et al., 2000). E-Referencer v. 2 that has been implemented applies a repertoire of initial search strategies and reformulation strategies to retrieve records from OPACs using the Z39.50 protocol, and also assists users in mapping query keywords to the Library of Congress subject headings."
    Source
    Electronic library. 22(2004) no.2, S.112-120
  16. 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.
    Date
    27. 8.2011 14:24:29
  17. Breeding, M.: Thinking about your next OPAC (2007) 0.01 
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    Abstract
    It's clear that today's typical library users are Web-sawy and have very high expectations. Librarians need to offer interfaces on Web sites that match or exceed those found on the commercial Web. Paired with high-quality content that's selected and created by librarians, a state-of-the-art Web interface is a compelling destination for users.
  18. Steiner, E.S.: OPAC 2.0 : Mit Web 2.0-Technologie zum Bibliothekskatalog der Zukunft? (2007) 0.01 
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    Abstract
    Diese Arbeit besteht im Wesentlichen aus zwei Teilen: Der erste Teil beinhaltet eine Einführung in den Begriff Web 2.0 und in die allgemeinen Rahmenbedingungen der zugehörigen technischen Entwicklungen. Des Weiteren werden exemplarische Techniken vorgestellt, die Web 2.0 zugeschrieben werden können sowie einige beispielhafte Anwendungen. Im zweiten Teil wird die Diskussion um Bibliothek 2.0 aufgegriffen, um anschließend näher auf Web 2.0 Techniken in Bibliothekskatalogen bzw. den OPAC 2.0 einzugehen. Verschiedene Techniken, die im OPAC 2.0 Anwendung finden können, werden diskutiert und zuletzt werden einige beispielhafte OPACs vorgestellt.
  19. Slone, D.J.: ¬A bird's eye view of cross-platform web interaction (2005) 0.01 
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    Abstract
    Purpose - This exploratory study sets out to describe the ways in which end-users exchanged information between the web and a web online catalog, how they searched one device based on what they knew about the other, and their experiences in navigating between the two devices. Design/methodology/approach - Thirty-one participants were observed searching the web or a web online catalog. After the observations, an interview guide was used to ask targeted questions. Findings - The findings suggest that people familiar with the use of traditional online catalogs were more comfortable using web tools than those who lacked online catalog experience. People who had recent web experience expected online catalog searching to be similar to web searching. However, drawing too close an association between the two systems sometimes caused difficulties when the searching protocols varied, like keyword searching versus selecting an index. Research limitations/implications - Some limitations of the study include a small sampling size, varied responses to interview questions, obtrusive procedures, and lack of generalizability to groups or settings dissimilar from the one in this study. Originality/value - This study provides a rare look into the challenges faced by a diverse group of public library users on the web. It is instructive for practicing librarians and researchers.
  20. Hildreth, C.R.: Are Web-based OPACs more effective retrieval systems than their conventional predecessors? : an experimental study (2000) 0.00 
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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

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