Response time of on-line document retrieval systems is analyzed. Linear and inverted file organizations are considered and their response times are evaluated. (Author)

The purposes of this study are to identify and define viable remote browsing techniques and the requirements for an interactive medical information system that would permit the use of such techniques. The main emphasis is in the areas of: (1) remote viewing of page material; and (2) remote interrogation of fact banks with question-answering…

Intrex is an experimental bibliographic and full text storage and retrieval system which has advanced the concept of the on-line interactive search of a computer stored bibliographic data base and the on-line access to a microfiche document storage. The Intrex system includes a set of computer programs designed for information retrieval, a…

The ASCII (American Standard Code for Information Interchange) decoder described here accepts inputs from an acoustic coupler, or Modem, in a remote time-sharing system. On receipt of a special command character the decoder recognizes, stores, and decodes the next two decimal digits. The output can be used to access any one of 100 items. For…

The purpose of this manual is to specify the additional steps required in the data collection process to prepare bibliographic data for conversion into machine-readable form. It is designed to aid catalogers in preparing catalog entries in machine readable form for the on-line cataloging system of the Ohio College Library Center. The rules for…

Programmed Learning and Teaching Operation (PLATO) distributes instructional materials in the form of text, numbers, animated drawings and other graphics for individualized, self-paced learning. (Author)

Viewdata, an interactive service that may revolutionize the public's access to information, transforms the home television receiver into a home information retrieval terminal via a telephone, which connects it to a central computer covering a wide range of data bases. Its origins, costs, and implications are discussed. (Author/MBR)

The application of computers to retrieval of primary documents is illustrated by descriptions of the Baltimore Region Institutional Studies Center (BRISC), which operates an automated system for retrieving records by subject, geographic location, and date; and ARCHON (ARCHives ONline), the online program developed to meet BRISC retrieval…

The prototype AID system for search strategy formulation currently operational on TOXLINE is described. Utilizing a compressed in-core hash table, it relies on statistical frequency distribution information about term occurrence in a set of document texts retrieved in response to a Boolean search query, and the occurrence frequencies of the same…

Discusses some reasons for evaluating on-line literature searching in libraries, as well as techniques for studying costs for various data bases and services, as well as quality of searching--precision and recall--and unit cost determination. (JD)

Describes a course which provides students with hands-on experience at a computer terminal, and includes segments on how to conduct a reference interview using counseling techniques, how to evaluate and select information retrieval services and equipment, and discusses the impact of computerized information retrieval on libraries. (JAB)

The computer-based reference process includes the user pre-search form, appointments, search strategy negotiation, on-line sampling and on-line search session. The role of the search analyst, his personality and communication skills are discussed in relation to the success or failure of a computer search. (JAB)

Libraries in Canada can now access the Telenet and Tymnet networks through a Canadian telecommunications network called DATAPAC. One library's trial use of DATAPAC, USER/network interaction, system messages and meanings, communications costs, impact on online searching in Canada, and the Canadian data bases which will now be accessible to users in…

A description of techniques for introducing online services to new user groups includes discussion of terms and their definitions, evolution of online searching, advantages and disadvantages of online searching, production of the data bases, search strategies, Boolean logic, costs and charges, "do's and don'ts," and a user search questionnaire. (J…

Files of machine-readable social science data are not yet under adequate bibliographic control. Two possible innovations to make these files more widely known--library cataloging resulting in a national union catalog, and a national service combining indexing and abstracting, on-line search capability, and documents delivery--are discussed.…