This paper provides a portrayal of Z39.50 (a communications protocol that enables two systems to exchange messages for the purpose of information retrieval) that explains its flexibility in response to a variety of information retrieval requirements in the networked environment. The first section presents an overview of Z39.50, including the…

Profiles four major bibliographic utilities: the Research Libraries Information Network (RLIN), the Ohio College Library Center (OCLC), the Washington Library Network (WLN), and the University of Toronto Library Automation Systems (UTLAS). (FM)

Briefly describes the origin and development of some major online bibliographic utilities, including the Ohio College Library Center (OCLC), the Research Libraries Information Network (RLIN), the University of Toronto Library Automation Systems (UTLAS), and the Washington Library Network (WLN). (FM)

Presents four considerations in the development of a gopher server: organization, promotion, training, and maintenance. Economic issues such as development and maintenance costs relating to staff and equipment are also discussed. Benefits from the development of a gopher include access to external information resources and enhanced access to local…

Provides an overview of the Internet as it exists today, and a sampling of the kinds of information services it provides. (SR)

Presents a domain-specific thesaurus for linguistic support of an information broker that employs an adaptive semantic-distance function based on pathfinder networks and algorithms for automated population by nominal compound interpretation and relational inheritance. Mathematical structure of thesauri and issues for further research are also…

A computer-based, integrated information system incorporating data and information about the data, SIPP ACCESS systematically links technologies of laser disk, mainframe computer, microcomputer, and electronic networks, and applies relational technology to provide access to information about complex statistical data collections. Examples are given…

Describes a computer-based information retrieval and electronic messaging system produced by Control Data Corporation now being used by government agencies and other organizations. Background of Local Government Information Network (LOGIN), database structure, types of LOGIN units, searching LOGIN (intersect, display, and list commands), and how…

Outlines the history, form of membership, legal incorporation, and technical aspects of the College Libraries Activity Network of New South Wales (CLANN) and describes Insearch DIAL (Division of Library and Information) Services and its place in the information services network. (RAO)

Reviews the Avery Index to Architectural Periodicals, an online special database of the Research Libraries Information Network that analyzes the contents of journals, listing only those articles dealing with architecture. Access and fees, access points, browsing, and search strategies are covered and examples are given. (EJS)

The Broad System of Ordering (BSO), a subject-indication coding and ordering scheme developed to meet the requirements of the UNISIST program for an international switching mechanism between information systems using diverse indexing/retrieval languages is described. The scope and purpose of the BSO, its development and testing, a schematic…

Describes the World-Wide Web (W3) project, which is designed to create a global information universe using techniques of hypertext, information retrieval, and wide area networking. Discussion covers the W3 data model, W3 architecture, the document naming scheme, protocols, document formats, comparison with other systems, experience with the W3…

Presents an approach for dynamic database integration and query processing in the absence of information about attribute correspondences and global IDs. Defines different types of equivalence conditions for the construction of global IDs. Proposes a strategy based on ranked role-sets that makes use of an automated semantic integration procedure…

Recognizing that the use of resource sharing capabilities provided by computer networks is inhibited by the requirement that the user become familiar with the varied command languages and protocols of each accessed system, this report presents a general approach to solving the problem using an intermediary system to support a set of common…

Videotex systems are reviewed and grouped into five general classes: information retrieval, transactions, messaging, computing, and telemonitoring. The videotex technologies providing these services at the user end are described and a series of technological enhancements for each service is discussed. (Author/JJD)