Assesses the current state of reference structures in online public access catalogs (OPACs) in a framework defined by stagnation, progress, and future challenges. Outlines six areas for reference structure development. Twenty figures provide illustrations. (AEF)

Findings of a project to convert a single LC class from cards to machine readable tapes at a two-year college suggest that an in-house retrospective conversion is feasible for academic libraries. A high conversion hit rate, implying minimal original cataloging, will keep project costs and duration low. There are five references. (RAA)

Identifies the several functions which contribute to the total bibliographic record structure of the country, dividing the bibliographic record system by market type--government, nonprofit, and for-profit--and by function--shared cataloging, interlibrary loans, online catalogs, circulation control, serials control, and acquisitions. (Author/JL)

Analyzes the change that Internet-based OPACs (Online Public Access Catalogs) have represented to the structure, administration, and maintenance of the catalogs, retrieval systems, and user interfaces. Examines the structure of databases and traditional principles that have governed systems development. Discusses repercussions of the application…

This paper describes methods used for maintenance of bibliographic records in online catalogs and compares them with maintenance in the conventional card catalog: addition of bibliographic records, identification and correction of errors, application of authority control, addition of information to records, and withdrawal of records from catalog.…

This editorial addresses the issue of whether or not to provide free-text, keyword/boolean search capabilities in the information retrieval mechanisms of online public access catalogs and discusses online catalogs developed prior to 1980--keyword searching, phrase searching, and precoordination and postcoordination. (EJS)

This tutorial on packet radio (communication system using radio and digital packet-switching technology) highlights radio transmission of data, brief history, special considerations in applying packet radio to library online catalogs, technology, defining protocol at physical and network levels, security, geographic coverage, and components. (A…

Discussion of factors which led Division of Library Automation, University of California, to configure its computing resources as they are now, notes distributed processing, centralized processing, machine architecture, selection of operating system, telecommunications software, software packages for online catalogs, and problems of overhead and…

Recommends an expansion of MARC codes for decimal class numbers to enhance automated subject retrieval. Five values for a second indicator and two new subfields are suggested for encoding hierarchical relationships among decimal class numbers. Additional subfields are suggested to enhance retrieval through analysis of synthesized numbers in…

A retrospective conversion tool permitting libraries with a microfiche reader and Apple microcomputer to convert bibliographic and holdings files to computer-readable tapes in MARC format is described. The basic process, library costs and MARC tape costs, use of system in Wisconsin, and user's view of the system are noted. (EJS)

Discusses some of the problems in creating bibliographic descriptions for materials published in languages which employ nonroman scripts, analyzes the impact of online catalog systems in overcoming some of these difficulties, and describes some of the computer hardware, particularly terminals, being developed to handle nonroman scripts. (JL)

Discusses results of opinion poll conducted by Library and Information Technology Association of 334 academic, public, government, and corporate libraries concerning authority control in the online environment. Use of authority files on bibliographic utilities, presence of online catalogs, Library of Congress authority records, and comments from…

Describes the scope, objectives, and status of a study of user responses to public online catalogs conducted in 1982 with Council on Library Resources (CLR) funding. The framework for evaluating the user-catalog interface, data collection, and questionnaire content are discussed, and a copy of the survey questionnaire is appended. (Author/JL)

Reports on the retrospective conversion via OCLC of cataloging for three library collections at the University of South Carolina--the main, rare book, and historical collections. Backgrounds of the collections, conversion procedures, determinants of conversion rates, and cost factors are discussed. (Author/JL)

Retrievability of titles of 152 periodicals were compared in a fixed-length algorithmic search (Library Computer System) and a keyword search (Washington Library Network) to determine which type of search algorithm is more successful with titles of varying lengths. Three references and a list of English language stopwords are appended. (EJS)