Presents a model that calculates the conditions under which a library may adopt a highly service-oriented online catalog access policy at minimum additional cost. The use of arrival rates, service rates, and queueing calculations to arrive at a cost-effective policy is explained. (Author/CLB)

Researchers studying subject searching distributed an online questionnaire to users who access the University of California's online public access catalog, MELVYL, from public access terminals in the libraries of the University of California at Santa Cruz. This article discusses the results of transaction log analysis, comparison of in-library and…

Describes a study conducted at the Hebrew University of Jerusalem to determine whether users doing bibliographic searches in ALEPH (Automated Library Expandable Program Hebrew University), a bibliographic utility with a decentralized database, searched the online catalog of the library where they were working or whether they accessed other…

A survey at the University of Houston examined factors related to subject searching success in online catalogs, including: extent of subject searching; response to unsuccessful searches; reasons subject search is not used; users' awareness of sources of subject terms; and suggestions from users for improving subject searching capabilities. (CLB)

Describes an analysis of transaction logs of the online catalog at the University of Missouri-Kansas City that examined patron use of both controlled and uncontrolled vocabulary subject access during the same search session. Hypotheses tested are discussed, and recommendations are made for library instruction and online catalog design. (six…

Describes a study that examined the search behavior of remote users of the University of California MELVYL online public access catalog by analyzing the transaction logs. Highlights include the number of searches, databases searched, number of retrievals, constructing search commands, problems with search terms, and effectiveness of searches.…

Describes an evaluation of variability in the percentage of subject searching in an online catalog among branch libraries of one university. The results reported include variability by time of day, day of week, and week of semester. The value of this type of information for library administration is discussed. (CLB)

Offers a model for choosing among CD-ROM, end user access, mediated online searching, or locally mounted files as alternatives for extending online catalogs and replacing printed indexes. Estimates of demand and comparisons of costs made at Trinity and Clemson Universities provide a quantitative framework for selection. (Contains four references.)…