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Download full textNorman, Donald A.; Hutchins, Edwin L., Jr. – 1988
This synthesis of the research on direct manipulation interfaces explores the nature of directness in computer interfaces and demonstrates that the concept of directness is complex, including two gulfs--for execution and evaluation--and two kinds of mappings--semantic mappings and referential distance. Examination of the complexities of the…
Descriptors: Artificial Intelligence, Auditory Stimuli, Check Lists, Cognitive Processes
Peer reviewedShires, Nancy Lee; Olszak, Lydia P. – RQ, 1992
Discusses basic principles of human-computer interface design that will be helpful to librarians involved in designing effective OPAC (Online Public Access Catalog) screens. Highlights include physical features; general principles; menu screens; commands; inquiry screens; messages, including help screens; and organizational considerations,…
Descriptors: Check Lists, Design Requirements, Library Catalogs, Man Machine Systems
Peer reviewedLaBorie, Tim; Garson, Ken – Library Trends, 1988
This study investigated the usefulness of end user systems to library and information science students. Seventeen volunteers were offered free searching on BRS/After Dark and DIALOG's Knowledge Index. The search itself, postsearch questionnaire, and completed research papers were analyzed for databases used, cost and time online, and precision.…
Descriptors: Databases, Graduate Students, Higher Education, Library Education
