Presents microcomputer-based information retrieval system in public access mode and describes preparations, procedures, and use developed and recorded during first year of operation at Louisiana State University. A detailed analysis of month-long free trial period (user status, major areas of study, subjects searched) and 10 conclusions and…

Discusses typical uses of databases and data management programs in the classroom; provides a learning plan to teach students how to use databases; lists typical student projects using databases; and presents criteria to help educators choose appropriate database management programs for their classrooms. (MBR)

Reports on recent advances in development and use of database management systems and increased recognition of importance of information requirements determination and the data dictionary/directory which have created a new role for librarians. Further potential for library careers in data administration is discussed. Twenty-seven references and…

Zipfian laws for frequency distributions of word pairs and longer phrases are derived from text sample analysis. From crossing of Zipfian curves, it is deduced that number of multi-word phrases that occur frequently in text is surprisingly small, of same order of magnitude as number of individual word-types. (8 references) (EJS)

Describes public library reference service which allows patrons to type out search instructions on a computer terminal, review and select references, and receive, by high-speed printer, facsimile copy of selected periodical articles. Development of periodicals center at main county library and use of self-coaching SEARCH HELPER system are…

Reports on the state of currently available digital storage and retrieval systems and describes in detail one-sided optical videodisc LaserData and the Mnemos system, which stores graphic images on microfiche discs. Video Patsearch, Matrox, Philips Megadoc, DEMAND, and Digital Recording Corporation's optical digital records and future videodisc…

This essay discussing effects of automation on library personnel and library services notes civil service structures; failures in personnel administration; rigidity in library service; access to information by "temporary" language; evaluative, judgmental analysis of the book, data, or journal; dangers of centralized decision-making and…

This overview of an experimental automated circulation system at Ibadan University (Nigeria) includes a discussion of system hardware, software, program structure, file structure, and system functions (charges, discharges, renews, overdues, fines, reservations, recalls, and assisted query). Statistics on manual and automated systems related to…

Describes use of the software ADABAS (general purpose database management system) and NATURAL (interactive programing language) in development and implementation of an information retrieval system for the National Television and Radio Network of Israel. General design considerations, files contained in each archive, search strategies, and keywords…

Describes prototype system that provides retrieval from hierarchically structured full-text databases such as legal statutes and regulations and engineering standards. Enhanced retrieval is provided through integration of three different access techniques dependent on inherent hierarchical text structure: menu, Boolean combination of keywords,…

Presents typology of online search heuristics consisting of six main classes: philosophical attitudes and overall approach; language of problem description; record and file structure; concept formulation and reformulation; recall and precision; and cost efficiency. Heuristics in each of the six classes are listed and selected examples are briefly…

Proposes approach to integrating Boolean and statistical systems where Boolean queries are interpreted as a means of specifying term dependencies in relevant set of documents. Highlights include series of retrieval experiments designed to test retrieval strategy based on term dependence model and relation of results to other work. (18 references)…

Explores response time variations in National Library of Medicine's ELHILL bibliographic search system and analyzes statistical significance of response time in terms of its variations by day of week, hour of day, particular bibliographic file being searched, command issued by user, number of users logged onto system. Ten references are cited.…

Presents review of recent and current work in the United Kingdom on developing computer assisted learning aids (tape-slide presentations, teaching packages, simulations and emulations of commercial retrieval services) for the teaching of online information retrieval at library schools. Seventeen references are cited. (EJS)

Explores relationships between holdings data input into an online catalog and the output, including specific housing location, call number, size information, full-piece-specific hierarchy and enumeration, status of piece, and bibliographic or local notes. Record structure for holdings segment of Triangle Research Libraries Network online catalog…