Reports the results of a survey of libraries having authority control and using authority control vendors, which was conducted to examine online maintenance features of present systems. The features discussed include global updates; uniqueness, hierarchical, and reciprocity checks; human intervention; field validation; and frequency of authority…

Compares pricing of seven CD-ROM-based public access catalog systems for libraries of diverse sizes and groupings. Other features of the systems are outlined in the broad areas of database preparation, indexing, database updates, hardware, information retrieval, library controlled elements, interlibrary loan, reports, user support, future…

BiblioFile Intelligent Catalog is a CD-ROM-based public access catalog system which incorporates graphics and sound to provide a multisensory interface and artificial intelligence techniques to increase search precision. The system can be updated frequently and inexpensively by linking hard disk drives to CD-ROM optical drives. (MES)

This review of the 1986 literature on subject access covers: (1) general works; (2) organization and history; (3) classification systems; (4) classification theory and method; (5) Library of Congress Subject Headings (LCSH); (6) authority control through LCSH; (7) subject searching through LC-based, assigned subject headings; and (8) other subject…

Describes a study that compared the "Video Source Book,""Variety's Complete Home Video Directory," and OCLC in order to judge their comprehensiveness, currency, uniqueness, and redundancy in cataloging videos. The strengths and weaknesses of each source are discussed and suggestions for further research into the bibliographic…

Describes a study that examined the effect of adding retrospective conversion holdings to OCLC on the number of interlibrary loan requests received, and determined the added costs or benefits of the project. Findings discussed include the impact of the library's use of OCLC and the effect of types of materials cataloged on interlibrary loan…

Investigates methods of compressing headings identified by MARC subfield codes to reduce the size of browsable displays. An argument is made for sorting subdivisions by a conceptual, rather than an alphabetical, approach to present efficient browsable displays and relieve the user of the burden of data organization. (14 references) (Author/CLB)

Describes the development and implementation of software that provides a global change capability by allowing correction of a single heading in a large file of bibliographic records through programatic identification and replacement. Specific change processes are described, including name headings, geographic headings, and topical subject…

Describes an automated library network system designed by the Colorado Alliance of Research Libraries that offers traditional serials control functions and access to the actual article content of journals. The design of the database and plans for a document delivery system are discussed. (CLB)

Describes the basic concepts of Lotka's law of scientific productivity, Bradford's law of scatter, and Zipf's law of word occurrence. The discussion covers the validity of these laws and useful applications of each law to specific library applications. (13 references) (CLB)

Review of the 1987 literature on library technical services covers research on: (1) cataloging; (2) subject analysis; (3) authority control; (4) use of the online catalog; (5) acquisitions; and (6) library preservation. The review is limited to studies with a clearly defined research methodology, primarily field studies or survey research. (38…

Discusses the concept of main entry in MARC bibliographic records based on the definition in the revised second edition of the "Anglo-American Cataloguing Rules." Access points versus entries are considered; differences between card catalog and online catalog environments are examined; and primary access is suggested as an appropriate…

Describes an analysis of duplicate records in OCLC's Online Union Catalog. General and bibliographic characteristics of duplicate records are described; and reasons for duplicate records are discussed, including input errors, omission of relevant information, and differences in the interpretation of existing information. (five references) (LRW)

Describes Microlif (Microcomputer Library Interchange Format), a standard data interchange format for bibliographic information on microcomputers. Discussion includes reasons for Microlif development, differences from full MARC format, and development of the new USMARC (Microlif protocol). Members of the Microlif community are listed, and the…

Discusses special problems that the symbols for sharps and flats in music notation present for the retrieval of music materials in online catalogs, and describes the results of a survey of vendors of online systems that was conducted to determine how vendors deal with this notation. (nine references) (LRW)