Describes the organization of the descriptors used in the ERIC database to indicate age, educational, and student levels, and suggests appropriate search strategies for the retrieval of information on specific age groups. (CLB)

This study examined the importance of negative searching, or searching to discover topics not previously explored in writing, and its oversight in the library literature. A survey of university faculty revealed a tendency to view negative searching as necessary to scholarly endeavors, but an online literature search showed little discussion of…

Discusses the problems associated with using connect time as the basis of user fees for searching numeric online databases, and proposes a methodology for user charge estimation based on query formulation and results. (87 references) (CLB)

Designed to measure end-users' efficacy in online searching based on their presearch experience with printed literature retrieval systems for the search topic, this experiment examined differences between manual searches preceding electronic searches and vice versa. The results were not statistically significant due to the small sample size.…

Compares the differences in coverage and utility of three substructure databases--Chemical Abstracts, Index Chemicus, and Chemical Information System's Nomenclature Search System. The differences between Chemical Abstracts with two different vendors--STN International and Questel--are described and a summary guide for choosing between databases is…

Presents a general mathematical framework for information retrieval, in which query evaluation is seen as a mapping from the free term algebra built by query descriptors and weights to the semantic algebra of evaluation value. Competing mathematical models that try to describe how retrieval systems behave are reviewed. (Author/MBR)

Describes three types of literature searches conducted as part of instructional design process: instructional materials, content research, and instructional theory reviews. Search techniques to complete each type of literature search are reviewed: card catalog, online, materials indexes, and grapevine searches. An example of an instructional…

Profiles the SPORT database, produced by Sport Information Resource Centre, Ottawa, Ontario, which provides extensive coverage of individual sports including practice, training and equipment, recreation, sports medicine, physical education, sport facilities, and international sport history. Olympic coverage in SPORT, sports sciences, online…

This sixth and final course installment discusses subject access to information through the online catalog. Highlights include online catalog transaction logs (printouts showing each step in all searches done in system), search effectiveness, online user training, unified access, Library of Congress Subject Headings, and online catalog design.…

Introduces search technique that professional searchers often use to start tracking down information regardless of topic. This technique involves using set of large databases that cover material because of format rather than subject. Databases reviewed include books/monographs, journals/magazines, reports, expertise, and full-text and Public…

Reviews two databases covering state and federal legislation--Electronic Legislative Search System and Legi-Slate--by comparing database coverage, documentation and training, pricing, and evaluation. Three additional databases offered by Public Affairs Information, S & FA Reporting Services, and Legislex are mentioned. Five sources are given. (EJS)

Provides description of principal database sources for information on current events--newspaper indexes (e.g., INFORMATION BANK, VU/TEXT, NEWSPAPER INDEX); magazine databases (e.g., NEXIS-MAGS, MAGAZINE ASAP); wire service databases (e.g., NewsNet, WIRES, NEWS); and reference databases (encyclopedias, yearbooks, FACTS ON FILE). A list of the 37…

Describes the value and use of In-Search, an access software program designed to make online searches simpler--and less costly--for Dialog users by helping them to decide on a search strategy before signing online. (MBR)

In this fourth of five course installments, statements by four practitioners and researchers on role of Library of Congress (LC) and its subject headings in improving subject access to United States libraries are presented. Comments from LC and a tabulation of suggestions from 10 respondents are included. (EJS)

This second of a three-part series compares search features (i.e., truncation symbols, boolean operators, proximity operators, phrase searching, save searches) of two databases providing legal information. Search tips concerning charges and effective searching and tables listing functions of commands and proximity operators for both databases are…