Discusses the problem of data redundancy in a fuzzy relational data model and describes three existing frameworks of fuzzy data representation and redundancy treatment. A new treatment based on Zadeh's extension principle is proposed. (18 references) (MES)

Describes Microcosm, an open hypermedia system for browsing through large bodies of multimedia information via links in external linkbases; explains HyTime (Hypermedia/Time-Based Structuring Language), an international standard for representing relationships between document objects; and examines HyTime features which are relevant to Microcosm.…

During a 28-month period beginning in January 1988, the ERIC Clearinghouse on Tests, Measurement, and Evaluation (ERIC/TM) selected documents submitted by over 800 organizations for entry into the ERIC database. Twenty-three organizations, which submitted 595 (31 percent) of the 1,904 documents accepted by ERIC/TM during that period, are…

Discusses the identification of copyright ownership where there may not be a formal notice of copyright in the traditional print sense. Compilations of information on CD-ROMs and other optical media are addressed, the formation of standards by the National Information Standards Organization (NISO) is described, and relevant legal decisions are…

Describes a demonstration program in which information needed to respond to questions is based on secondary data that comes from databases of agencies such as the Census Bureau and Dun and Bradstreet. (JOW)

Compares two information retrieval systems, CLARIT and TOPIC, in terms of assigned versus derived and precoordinate versus postcoordinate indexing. Models of information retrieval systems are discussed, and a test of the systems using a demonstration database of full-text articles from the "Wall Street Journal" is described. (Contains 21…

Discusses how the production of IETM (interactive electronic technical manuals) and EPSS (electronic performance support systems) has been automated to give subject-matter experts the ability to mass-produce electronic documents, training, and training-support materials. Describes four projects involving object-relational database architecture.…

Discussion of XML focuses on indexing techniques for XML documents, grouping them into flat-file, semistructured, and structured indexing paradigms. Highlights include searching techniques, including full text search and multistage search; search result presentations; database and information retrieval system integration; XML query languages; and…

Discussion of the classification of documents from bibliographic databases focuses on a method of vectorizing reference documents from LISA (Library and Information Science Abstracts) which permits their topological organization using Kohonen's algorithm. Analyzes possibilities of this type of neural network with respect to the development of…

The aim of this study was to develop a model of students' energy concept development. Applying Case's (1985, 1992) structural theory of cognitive development, we hypothesized that students' concept of energy undergoes a series of transitions, corresponding to systematic increases in working memory capacity. The US national sample from the Third…

Most people don't realize how easy it is to improve library services with open source databases. Despite the fact that they are distributed free of charge, open source databases are powerful and stable enough for critical applications. With a little knowledge of HTML and some basic technical skills, you can quickly create databases to register…

Current state and national disability and employment policy program and funding directives, such as the Ticket to Work and Work Incentives Improvement Act of 1999 and the Workforce Investment Act of 1998, require the state-federal vocational rehabilitation (VR) program to demonstrate service efficacy in order to maintain and expand program funding…

The present study reports the results of a survey conducted at the University of West Florida concerning faculty usage and views toward online databases. Most respondents (N=46) felt quite satisfied with scholarly database availability through the university library. However, some faculty suggested that databases such as Current Contents and…

Growth and technology have driven the University of Texas at Dallas (UTD) to build a geographic information system (GIS) database for its facilities and space management. This chapter reviews several issues concerning this implementation: (1) the challenges involved in implementing the system; (2) the lack of efficiency and accuracy that existed…

The effective education of American children and youth is widely considered an important goal. For individuals, education traditionally has been regarded as a door to expanded opportunities. For the nation, an educated workforce has come to be recognized as essential to ensuring competitiveness in a global economy. An important question for those…