Describes two systems--Wide Area Information Servers (WAIS) and Rosebud--that provide protocol-based mechanisms for accessing remote full-text information servers. Design constraints, human interface design, and implementation are examined for five interfaces to these systems developed to run on the Macintosh or Unix terminals. Sample screen…

This digest describes and defines the various components of an expert system, e.g., a computerized tool designed to enhance the quality and availability of knowledge required by decision makers. It is noted that expert systems differ from conventional applications software in the following areas: (1) the existence of the expert systems shell, or…

InterBrowse, a uniform interface information retrieval application for several different databases, is designed to be used in Intermedia, a hypermedia environment currently under development at Brown University's Institute for Research Information and Scholarship. This application arose out of the recognized need for an interface that can be used…

Discusses methods for the retrieval of help knowledge items using graphical tree structures that conform to the hierarchical nature of the tutorial information being referenced. The implementation of "Study Tree Presenter," a special purpose "hypertext shell" that provides such access is described and several samples of screen…

Reviews the background, concepts, and role of hypermedia systems and analyzes essential, expected, and desirable features of hypermedia in order to provide a basis for system design and evaluation. Four hypermedium shells and systems are described, and approaches to user interface problems are discussed. (48 references) (MES)

Defines and delineates hypermedia by examining its relation to the user as a system, an interface, and an environment. Classes of computer systems are described; classes of hypermedia systems are explained; user work components are discussed, including tasks, information, and the environment; and emerging standards and future developments are…

This report presents a model combining the emerging technologies of hypertext and expert systems. Hypertext is relatively unexplored but promises an innovative approach to information retrieval. In contrast, expert systems have been used experimentally in many different application areas ranging from medical diagnosis to oil exploration. The…

Instructional Design Expert (ID Expert) is a prototype instructional design expert system which supports the instructional design phase of instructional system development. Phase 2 of ID Expert was implemented using S.1 expert system language on the VAX computer. The user interface was text-based, consisting of a question/answer dialogue primarily…

This paper describes the Grolier Publishing Company's development of its encyclopedic text database by editing the machine-readable data files from which the Academic American Encyclopedia was printed, and its longer-term objective of creating a multimedia encyclopedia when the technology for a viable delivery system becomes available. Topics…

Special types of prosthetic devices have been designed to support the specific needs of disabled and handicapped computer users in retrieving information. Of particular importance are interfaces based on the use of sound, tactile operations, and gestures. Such interfaces may be used to provide disabled people with access to hypermedia information.…

VITAL (Vision Impaired Task and Assignment Lexicon) is an integrated computerized system that performs workplace design tasks for visually impaired workers. VITAL consists of three modules: ergonomics consultation, disability index, and work measurement. Evaluation indicated that VITAL could be used as a tool to help nonprofessional vocational…

Compares two authoring tools that were developed to enable users without programing experience to create and modify software. HyperCard, designed for Macintosh microcomputers, and ToolBook, for microcomputers that run on MS-DOS, are compared in the areas of programing languages, graphics and printing capabilities, user interface, system…

Discussion of the use of authoring systems for courseware development focuses on guidelines to be considered when designing authoring systems. Topics discussed include allowing a variety of instructional strategies; interaction with peripheral processes such as student records; the editing process; and human factors in computer interface design,…

Provides detailed instructions for setting up general purpose CD-ROM workstations using IBM compatible microcomputers and tells how to make CD-ROM disks available to the general user. Use of standardized hardware and software, utility programs, DOS batch files, a shell program, and a hypertext program at the University of Idaho Library are…

Describes the design and development of the Mercury Electronic Library Project at Carnegie Mellon University that resulted in a library information system that provides access to the library's online catalog as well as to other databases. The distributed architecture of the system is explained, and future plans are discussed. (two references) (LRW)