This essay suggests that until online public access catalogs can be truly user-friendly by encouraging searchers to learn and control and relearn, making systems too easy is not in the users' or systems' best interests. Experiences at Library of Congress and examples of search strategies and menu systems are noted. (EJS)

Describes the features and operations of a user-searchable online catalog called PaperChase which was developed and implemented for the retrieval of medical literature by physicians at Beth Israel Hospital in Boston. Interaction with the system and use of the catalog during its first year of operation are discussed. (JL)

The current status of MELVYL, the University of California's prototype online catalog, is described in a hypothetical conversation between the catalog and several users. Examples illustrate features of the two search modes available for this patron-accessed system: COMMAND for the novice, and the more sophisticated LOOKUP. (RBF)

Describes OASIS, a prototype adaptive online catalog implemented as a front end to the University of California MELVYL catalog. Topics addressed include the concept of adaptive retrieval systems, strategic search commands, feedback, prototyping using a front-end, the problem of excessive retrieval, commands to limit or increase search results, and…

This essay focuses on use of the Library of Congress Subject Headings system in online catalogs for the retrieval of information by subject. Among the topics addressed are differences among catalog forms (card, microform, and computer); user interface with different forms of catalog; the types of subject indexes employed in present online…

Discusses issues involved in offering printing for online library catalogs and weighs advantages and disadvantages of screen printing versus remote printing--speed, quality, privacy, convenience, noise, control, costs, accessibility and service. Additional technical issues discussed are buffered versus unbuffered asynchronous printer ports,…

Describes development of an online catalog for Dartmouth College Libraries by Dartmouth and Bibliographic Retrieval Services (BRS). Highlights include Dartmouth parameters; capability of creating a fully inverted file for entire bibliographic citation provided by BRS software; features of BRS/Dartmouth user interface; telecommunications links; and…

Discusses reasons for the development of an online catalog using computer output microfiche (COM) supplements to the card catalog in a university library, and outlines some of the principles used in designing the online system. Three references are cited. (CHC)

In this fifth course installment, the impact of technological developments on subject access is discussed. Expert opinions concerning trends in online catalogs, information storage, information generation, the user interface, library use of computer technology, subject access to pictorial materials, user friendly access sytems, and quicker access…

Briefly reviews history of library automation before discussing factors that libraries should consider before choosing to go online (collection size, machine-readable database, computer equipment, costs), and features of online catalogs (database organization, search features, authority files, display options). Information about selected online…

Presents preliminary data that characterizes the relationship between what users say they are trying to accomplish when using an online public access catalog (OPAC) and their perceptions of what input to give the system. Human-machine interaction is discussed, and appropriate methods for evaluating information retrieval systems are considered. (18…

The Subject Access Research Project was initiated by OCLC in August 1979 to study the process of subject searching in the library catalog, with the objective of identifying features for an automated subject retrieval system which would support the present search tactics employed by library users performing manual subject searches at the library…

Describes the latest modifications being made to OASIS, a front-end enhancement to the University of California's MELVYL online union catalog. Highlights include the X Windows interface; multiple database searching to act as an information network; Lisp implementation for flexible data representation; and OASIS commands and features to help…

Reports on the Online Catalog Public Access Project, a survey of users and nonusers in 31 U.S. libraries conducted for the Council on Library Resources. Characteristics of users, tasks, library setting, and system interface that affect user satisfaction are identified. A 25-item bibliography and user questionnaire are appended. (7 references) (EJS)

Presents the background, database, user instructions, design criteria, hardware, and commands of the online catalog system at the University of New Brunswick (Canada) library, as well as self-instructional features of the system. Evaluation of systems use and potential applications are discussed, and sample displays are provided. (RBF)