Presents an improved inverted region quadtree variation called Dynamic Inverted Quadtree that is able to support and index a pictorial database. Pattern-searching algorithms are described, and the space needs of Fully Inverted and Dynamic Inverted Quadtrees are analytically compared based on a model of image randomness expressed as a branching…

Describes the development of a system to retrieve images for an international project that is producing a pictorial dictionary of classical mythology, the Lexicon Iconographicum Mythologiae Classicae. Applications to other types of information are discussed, two classification systems for Art History are described, and design principles for…

Describes a practical application of hypertext that uses the "Guide" hypertext system developed at the University of Kent at Canterbury to supply customer support in diagnosing computing equipment problems. The underlying hypertext technology is explained, system monitoring is discussed, cost effectiveness is examined, and authorship is…

Describes the development of Usenet, the User's Network, a computer network that distributes group discussions (newsgroups) on different topics. Network News software is described, the rapid growth in popularity and heavy network traffic is discussed, and a hierarchical classification scheme to limit the amount of information for users is…

Explains how the student module of an intelligent tutoring system (ITS) can be designed to provide adequate representation and management of the student's knowledge. Highlights include characteristics of ITSs; student modeling; the Smalltalk/V programing environment, based on object-oriented programing; and the architecture of the student module.…

Describes the development of the GALAXY Integrated Library System by Gaylord Information Systems. Topics addressed include the library automation business; industry trends, both long-term and short-term; a history of Gaylord's automation ventures; Gaylord's vision of the future; and perspectives from two GALAXY users. (LRW)

Discusses the development of an Enriched Learning and Information Environment (ELIE). Highlights include technology-based and theory-based frameworks for defining ELIEs; a socio-technical definition; a conceptual prototype; a participatory design process, including iterative design through rapid prototyping; and design issues for technology…

Outlines the file structure requirements for a microcomputer-based information retrieval system using FoxPro, a relational database management system (DBMS). Issues relating to the design and implementation of such systems are discussed, and two possible designs are examined in terms of space economy and practicality of implementation. (15…

Reviews the characteristics of electronic communications technologies and their role in knowledge utilization. The uses of various technologies, relationships among technologies, and success in the marketplace are addressed; and issues for knowledge utilization research are discussed. (17 references) (EA)

Discusses the features of America Online, a commercial online service designed primarily for use with a Macintosh computer. Several documentation guides are identified, and a step-by-step tour of the service is provided with samples of various screens in the program. (12 references/notes) (EA)

Presents a group of semiotic principles for software design and uses them to show how they explain different educational possibilities. Discusses interface design and describes Theater in the Computer, a software environment for children, to illustrate semiotic-based principle of interface design. (Author/LRW)

Discusses how to increase user satisfaction by designing information retrieval systems that inform the user while the user is interacting online. Models the information processing operations of a user who has received an information message from the system and is stimulated into grasping at a higher understanding of the information need. (Contains…

Presents a heuristic, attribute-based, noise-tolerant data mining program, HCV (Version 2.0) based on the newly-developed extension matrix approach. Outlines some techniques implemented in the HCV program for noise handling and discretization of continuous domains; an empirical comparison shows that rules generated by HCV are more compact than the…

Describes the design of an information retrieval system that permits the personalization of a search by developing a user profile in order to reduce noise and increase the number of relevant items retrieved. The preorientation system is explained and an example using full-text natural language processing tools is presented. (Author/LRW)

This case study, of an application to facilitate dispatch work in a large organization, describes a history of collaboration and conflict between information systems professionals and end users as system designers. A Social Construction of Technology approach is used to examine the mixture of cooperation and conflict between the departments.…