This discussion of the utilization by computer designers and users of metaphors as organizing structures for dealing with the complexity of behavior of human/computer interfaces begins by identifying three types of metaphor that describe various aspects of human-computer interface design, i.e., activity, mode of interaction, and task domain. The…

Discusses the concepts of instructional theory and their application in the design of instructional and training packages, particularly computer-assisted instruction programs. (12 references) (CLB)

Reports on axiomatic approach to systems design that has emanated from documentation work in field of chemistry and closely related disciplines. It is based on five axioms: definability, order, sufficient degree of order, representational predictability, and representational fidelity. Mandatory indexing is discussed; a glossary is appended. (106…

Overview of expert systems (intelligent computer applications that use data, a knowledge base, and a control mechanism to solve problems) highlights history of expert systems; construction (human element, knowledge acquisition and learning, system architecture); limitations; issues and trends; and implications for information science. Thirty-three…

Part of the Communications Design Center's (CDC) on-going research on communication and document design, this report emphasizes the importance of a multi-level computer help system that goes beyond simple command descriptions to include assistance with goals and strategies within the application domain--in this case, automated authoring. The help…

Presents detailed guidelines based on the literature for screen layout and design of online catalogs, and discusses the potential advantages in terms of number of transactions per hour and user satisfaction. Further research questions are suggested and an extensive bibliography is provided. (CLB)

An online library system is an example of a complex computer system in that it supports a variety of users, both patrons and staff, and is made up of many intricate programs with complex relationships among them. Certain features are essential to a user friendly system: (1) users cannot get lost in the system; (2) users cannot enter illegal…

Describes application of instructional systems design, dialog design principles, and human factor considerations in developing the Pennsylvania Department of Education's computer-controlled intelligent videodisc system, which allows K-12 teachers to preview language arts television programs and overcome their technology anxiety. The top-down…

Reviews recent and current research and development projects in the United Kingdom dealing with online information systems. Main areas of research (systems design, impact on user behavior and organizational structure, ergonomics and bibliographic factors) and research techniques (features analysis, transaction log analysis, surveys and comparative…

Describes an advice-giving computer system being developed for genetics education called MENDEL that is based on research in learning, genetics problem solving, and expert systems. The value of MENDEL as a design tool and the tutorial function are stressed. Hypothesis testing, graphics, and experiential learning are also discussed. (Author/LRW)