Introduction: To provide valuable services in the future, libraries will need to create better information systems and set up an infrastructure more in line with the current technologies. The "Functional Requirements for Bibliographic Records" conceptual model provides a basis for this transformation, but there are still a number of…

Analyzes the amount of compression possible when arithmetic coding is used for text compression in conjunction with various input models. Algorithms are analyzed; modeling effects are considered; scaling is discussed; higher order models are examined, including prediction by partial matching; and coding effects are described. (34 references) (LRW)

Two utilization and implementation frameworks (known as Knowledge Production Utilization (KPU) frameworks) are related to the planning and reporting aspects of an evaluation: the Dissemination Analysis Group (DAG) model and; the Halland Loucks' Level of Use Scale (LoU). This comparison is set against a background wherein literature is reviewed to…

Identifies four components of a good predictive lossless image compression method: (1) pixel sequence, (2) image modeling and prediction, (3) error modeling, and (4) error coding. Highlights include Laplace distribution and a comparison of the multilevel progressive method for image coding with the prediction by partial precision matching method.…

Presents new methods for compressing bit matrices in large information retrieval systems which exploit possible correlations between rows of words and columns of documents. Three encoding methods are tested and compared--Shannon-Fano, arithmetic, and Huffman--and an appendix discusses binomial coefficients. (20 references) (LRW)

The number of children and adolescents accessing the Internet as well as the amount of time online are steadily increasing. The most common online activities include playing video games, navigating web sites, and communicating via chat rooms, email, and instant messaging. A theoretical framework for understanding the effects of Internet use on…

Location theory was extended into the domain of information-processing firms by attempting to optimally place a federal research and development agency according to its information-processing functions. The techniques used consisted of identifying possible locations within the continental United States, examining the costs of performing the…

This discussion of the information-processing model of learning as it relates to research in educational media traces research in conceptual organization to its beginnings in mathematical models of information-processing; addresses research hypotheses concerning structure and organization, processes and processing systems, and perceptual cues; and…

Presents an overview of feedback within the cybernetics and social frameworks. These feedback concepts are then compared with the interactive feedback concept evolving within the framework of information seeking and retrieving, based on their conceptualization of the feedback loop and notion of information. (Author/AEF)

Discusses the problems of compressing a large textual database for storage on CD-ROM. A text-compression algorithm is presented, new algorithms for compression of indices are described, and the ARTFL (American and French Research on the Treasury of the French Language) database is used as an example. (14 references) (LRW)

Discusses language comprehension and describes a technology for computer-aided text analysis called READWARE and software from the READWARE family called the Research Assistant that measures the relatedness of words or phrases by examining their letters. The theory of Letter Semantics is explained, and paradigms for text processing in information…

In this paper the roles and functions of man in the evolution and development of two complex specific systems within the Army operational environment are discussed. It is pointed out that throughout the course of historical development, the basic system functions and objectives have remained unchanged even though the system equipments have varied.…

Several different conceptions of the relationship between learning and development are considered in this article. It is argued that dialectical and ecological developmental orientations might provide a useful basis for synthesizing the contrasting frameworks of the operant, information processing, learning theory, and knowledge acquisition…

International information dissemination in the field of interdisciplinary youth research is necessary to exchange research results and to stimulate the production of new information. Interest in information regarding theories, methods, and empirical results has resulted in development of international exchange mechanisms, but information about…

This paper examines the application of different planning models to the new product development process. Various models are discussed in relation to the four principal stages of the process: product search, project development, market structure analysis, and investment analysis. The authors emphasize that all useful planning models must address a…