Search (4562 results, page 5 of 229)

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Abstract

Describes the work undertaken by the Wiliam Blake Archive, Virginia University, to document the metadata tools for handling digital images of illustrations accompanying Blake's work. Images are encoded in both JPEG and TIFF formats. Image Documentation (ID) records are slotted into that portion of the JPEG file reserved for textual metadata. Because the textual content of the ID record now becomes part of the image file itself, the documentary metadata travels with the image even it it is downloaded from one file to another. The metadata is invisible when viewing the image but becomes accessible to users via the 'info' button on the control panel of the Java applet

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Abstract

This paper describes a graphical interface for the navigation and construction of faceted thesauri that is based on formal concept analysis. Each facet of a thesaurus is represented as a mathematical lattice that is further subdivided into components. Users can graphically navigate through the Java implementation of the interface by clicking on terms that connect facets and components. Since there are many applications for thesauri in the knowledge representation field, such a graphical interface has the potential of being very useful

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Abstract

Written by the author of the best-selling 1001 really cool Web sites, this fun and informative book enables readers to take full advantage of the Web. More than a mere directory, it identifies and describes the best sites, guiding surfers to such innovations as VRML3-D and Java. Aside from downloads of Web browsers, Renehan points the way to free compilers and interpreters as well as free online access to major scientific journals

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Abstract

LCSH is known as such since 1975. It always has created headings to serve the LC collections instead of a theoretical basis. It started to replace cross reference codes by thesaural codes in 1986, in a mechanical fashion. It was in no way transformed into a thesaurus. Its encyclopedic coverage, its pre-coordinate concepts make it substantially distinct, considering that thesauri usually map a restricted field of knowledge and use uniterms. The questions raised are whether the new symbols comply with thesaurus standards and if they are true to one or to several models. Explanations and definitions from other lists of subject headings and thesauri, literature in the field of classification and subject indexing will provide some answers. For instance, see refers from a subject heading not used to another or others used. Exceptionally it will lead from a specific term to a more general one. Some equate a see reference with the equivalence relationship. Such relationships are pointed by USE in LCSH. See also references are made from the broader subject to narrower parts of it and also between associated subjects. They suggest lateral or vertical connexions as well as reciprocal relationships. They serve a coordination purpose for some, lay down a methodical search itinerary for others. Since their inception in the 1950's thesauri have been devised for indexing and retrieving information in the fields of science and technology. Eventually they attended to a number of social sciences and humanities. Research derived from thesauri was voluminous. Numerous guidelines are designed. They did not discriminate between the "hard" sciences and the social sciences. RT relationships are widely but diversely used in numerous controlled vocabularies. LCSH's aim is to achieve a list almost free of RT and SA references. It thus restricts relationships to BT/NT, USE and UF. This raises the question as to whether all fields of knowledge can "fit" in the Procrustean bed of RT/NT, i.e., genus/species relationships. Standard codes were devised. It was soon realized that BT/NT, well suited to the genus/species couple could not signal a whole-part relationship. In LCSH, BT and NT function as reciprocals, the whole-part relationship is taken into account by ISO. It is amply elaborated upon by authors. The part-whole connexion is sometimes studied apart. The decision to replace cross reference codes was an improvement. Relations can now be distinguished through the distinct needs of numerous fields of knowledge are not attended to. Topic inclusion, and topic-subtopic, could provide the missing link where genus/species or whole/part are inadequate. Distinct codes, BT/NT and whole/part, should be provided. Sorting relationships with mechanical means can only lead to confusion.

Theme

Konzeption und Anwendung des Prinzips Thesaurus

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Abstract

Discusses a retrieval study that focused on collection level archival records in the OCLC OLUC, made accessible through the EPIC online search system. Data were also collected from the local OPAC at North Carolina University at Chapel Hill (UNC-CH) in which UNC-CH produced OCLC records are loaded. The chief objective was to explore the retrieval environments in which a random sample of USMARC AMC records produced at UNC-CH were found: specifically to obtain a picture of the density of these databases in regard to each subject heading applied and, more generally, for each records. Key questions were: how many records would be retrieved for each subject heading attached to each of the records; and what was the nature of these subject headings vis a vis the numer of hits associated with them. Results show that large retrieval sets are a potential problem with national bibliographic utilities and that the local and national retrieval environments can vary greatly. The need for specifity in indexing is emphasized

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Abstract

The impetus for a large-scale study on subject heading understanding was a recommendation of the Library of Congress (LC) Subject Subdivisions Conference that suggested standardizing the order of subject subdivisions for the purpose of simplifying subject cataloging. This paper focuses on unexpected large-scale study findings about multiple meanings for subdivided subject headings and the effects that changes of meaning for different orders of subdivisions had on the meanings that end users and librarians provided to subdivided subject headings. Findings about changes of meaning in subdivided subject headings did not dissuade the authors regarding their recommendation that the library community adopt a standard order of subdivisions. The authors also give suggestions for additional studies of subject heading understanding that build on this one.

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Abstract

This paper recognizes the limitations of the existing file of Library of Congress (LC) subject authority records for subject heading assignment and validation. it makes recommendations for a new file of machine readable authority records for period subdivisions and for enhancements to the existings file of subject authority records. Recommended changes would enable online systems to assist in subject heading formulations and verify, with limited assistance by human intermediaries, the individual components of subdivided headings. The recommendations are timely in view of changes to the forms of period subdivisions that the Library of Congress is studying to facilitate the display of period subdivisions in chronological order. The availability of machine-readable authority records for most period subdivisions would enable online systems to automatically make changes to the forms of period subdivisions in bibliographic records using cross references for previously-used forms in the autority records for the new forms. The paper also discusses issues arising from an enhancement of the existing controlled system of period subdivision. A study of subdivided subject headings in a large bibliographic database forms the basis of the recommendations

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Abstract

Many information professionals feel that the time is still far off when the WWW can offer the combined funtionality and content of traditional online and CD-ROM databases, but there have been a number of recent Web developments to reflect on. Describes the testing and launch by Ovid of its Java client which, in effect, allows access to its databases on the Web with full search functionality, and the initiative of Euromonitor in providing Web access to its whole collection of consumer research reports and its entire database of business sources. Also reviews the service of a newcomer to the information scene, Information Quest (IQ) founded by Dawson Holdings which has made an agreement with Infonautics to offer access to its Electric Library database thus adding over 1.000 reference, consumer and business publications to its Web based journal service

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Abstract

Examines some of the advanced tools, techniques, methods and standards related to the Internet and WWW which consist of hybrids of documents and software, called 'document program hybrids'. Early Internet systems were based on having documents on one side and software on the other, neatly separated, apart from one another and without much interaction, so that the static document can also exist without computers and networks. Documentation program hybrids blur this classical distinction and all components are integrated, interwoven and exist in synergy with each other. Illustrates the techniques with particular reference to practical examples, including: dara collections and dedicated software; advanced HTML features on the WWW, multimedia viewer and plug in software for Internet and WWW browsers; VRML; interaction through a Web server with other servers and with instruments; adaptive hypertext provided by the server; 'webbots' or 'knowbots' or 'searchbots' or 'metasearch engines' or intelligent software agents; Sun's Java; Microsoft's ActiveX; program scripts for HTML and Web browsers; cookies; and Internet push technology with Webcasting channels

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Abstract

A unique collection of historical material covering the lives and events of an English village between 1400 and 1750 has been made available via a WWW enabled information retrieval system. Since the expected readership of the documents ranges from school children to experienced researchers, providing this information in an easily accessible form has offered many challenges requiring tools to aid searching and browsing. The file structure of the document collection was replaced by an database, enabling query results to be presented on the fly. A Java interface displays each user's context in a form that allows for easy and intuitive relevance feedback

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Abstract

Presents an approach that integrates searching and browsing in a manner that improves both paradigms. When browsing is the primary task, it enables semantic content-based tailoring of Web maps in both the generation as well as the visualization phases. When search is the primary task, it enables contextualization of the results by augmenting them with the documents' neighbourhoods. This approach is embodied in WebCutter, a client-server system fully integrated with Web software. WebCutter consists of a map generator running off a standard Web server and a map visualization client implemented as a Java applet runalble from any standard Web browser and requiring no installation or external plug-in application. WebCutter is in beta stage and is in the process of being integrated into the Lotus Domino application product line

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Abstract

identifies indexing features of the National Library of Medicine's Medical Subject Headings (MeSH) that pose challenges to end users of MEDLINE. These problematic features include the use of Explodes, Tree structures, subheadings, Text Word versus subject heading searching, and central concept searching. As end user search software becomes more sophisticated, so much methods of instruction to orient the end user to theses systems

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Abstract

The disciplines of human-computer interaction, computer-supported collaborative work, information storage and retrieval, and artificial intelligence should complement one another in the new discipline of hypertext. This holistic view of hypertext focuses on links: links within a document (microtext), links among documents (macrotext), links among people (grouptext), and dynamic links (expertext). The principles and systems which are relevant to creating and accessing hypertext can be usefully presented under the heading of text, microtext, macrotext, grouptext and expertext. From text to expertext, people consistently use hierarchical structures, particularly hierarchical semantic nets, to organize information

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Abstract

Recounts the efforts throughout the 1980s to promote the idea of a subject heading code and revisions to LC subject haedings. Describes the current situation of stasis. The Library of Congress has announced no comprehensive plan for LC Subject Headings, and it is unclear whether the concept of standardisation will be embraced

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Abstract

Investigates the inadequacy of the 10th ed. of LCSH regarding Islamic subject headings and compares it with some of the schemes available in Arabic. Whilst LCSH is not entirely inadequate, in some subjects related to Islam there is room for improvement and expansion. The following subjects are covered in the comparison: Islam as a general heading, Quran, the Prophet Muhammad, Hadith, islamic law, prayer, and Muslim pilgrims and pilgrimages

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Abstract

Evaluates the available subject-heading lists and critically examines 100 monographs recently catalogues by the Services documentaires multimedia asserting that French-language subject access tools do not meet the needs of users in public and school libraries. Reviews the development of subject catalogues in North America and suggests recommendations aimed at creating a vocabulary better adapted to the needs of users

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Abstract

Reviews the movement for change in the patterns and usage of LCSH and suggests improvements to the headings in the social sciences. Covers: confusion between disciplines and topics; confusion over the first element in a heading; insufficient number of headings; the problem of conditional subjects; controversial terminology; and insufficient See References

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Abstract

Locating notes about MeSH subheadings can be one of the most difficult aspects of MEDLINE searching. When used with MeSH, subheadings serve to limit or define the focus of a heading. NLM indexers, staff members who enter the MeSH indexing into the database, use subheadings freely. They do follow indexing conventions and searchers need to be aware of how to obtain basic subheading information to assist in search formulation. There are a number of methods which may be used in order to view subheading use notes

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Abstract

Integration of archival materials catalogued in the USMARC AMC format into online catalogues has given a new urgency to the need for direct subject access. Offers a broad definition of the concepts to be considered under the subject access heading, including not only topical subjects but also proper names, forms of material, time periods, geographic places, occupations, and functions. It is both necessary and possible to provide more consistent subject access to archives and manuscripts than currently is being achieved. Describes current efforts that are under way in the profession to address this need

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Abstract

The Zeitschriftendienst (ZD), a topical periodical analysis service, began publication in 1965 and now covers 200 periodicals. The Deutsche Bibliotheksinstitut has used electronic data processing for publishing since 1974. The editorial board processes and coordinates all incoming periodicals analysis. A committee advises on cataloguing problems, selects new entries and old material for discarding. In 1990 it was decided to use the Schlagwortnormdatei, a standardised subject heading system used in many libraries...The service is available in printed form on microfiche and disc. It may be possible to store ZD in in-house systems.