Presents an overview of the IR-NLI II system, an expert interface that allows users to access online information retrieval systems and that encompasses user modeling capabilities. Highlights include the design of the system, the structure and content of stereotypes that represent typical classes of users, and construction of user models.…

Proposes a conceptual reference architecture for information retrieval systems and discusses functional capabilities of a hypertext environment, based on the proposed architecture, for interaction with large textual databases. Functions of the prototype system HYPERLINE are described, and an example of a user session is provided. (17 references)…

Presents an information systems navigation approach using a combination of functionalities encountered in classification processes, Hypertext systems, and information retrieval systems. The first version of the SYRIUS system is described, with emphasis on the user's graphic interface which integrates these functionalities. (26 references) (EA)

Provides a structural definition of interactivity in instruction, with the goal of describing and delimiting a broad and general process. Examines the four major attributes to the concept of interactivity, and defines four additional variables that arise through the structural study of interaction. Outlines five common patterns that deal with…

Presents results of a study that explores factors of user-Web interaction in finding factual information, develops a conceptual framework for studying user-Web interaction, and applies a process-tracing method for conducting holistic user-Web studies. Describes measurement techniques and proposes a model consisting of the user, interface, and the…

This paper describes and critically analyzes several perspectives on interaction and computer technology, examines dimensions of interactions, and presents a framework for the design of interaction strategies. Traditional perspectives on interaction discussed are the operational and the functional. The operational perspective is described in terms…

Systems analysis, in this context, is not the process which is the necessary prelude to library automation; it is something more basic. It involves seeking out the fundamentals of a situation and applying scientific methods to their study, to find an optimal solution to the problems facing the manager. (20 references) (Author/TW)

Argues that automation offers promise for more effective counselor preparation through combining specific training components to produce outcomes stated in terms of trainee performance. (Author/CJ)

The ability to design and build sophisticated computer-based information systems (CIS) has progressed rapidly; however, the ability to implement them has not kept pace. These implementation problems can be solved by embedding CIS design with the socio-technical systems design approach. (Author/MLW)

Introduces a hypertext data model for textual databases in which the text is divided into a syntactic structure, which describes the relationships of the text parts, and an access structure, which is generated from the syntactic structure by users' queries. Implementation considerations for the structuring component, retrieval component, and…

Describes the development of a model for future national and international digital libraries. Four aspects of the model are presented: (1) nine principles underlying constructing electronic archives; (2) a study of potential user needs; (3) the design and evaluation of the user interface; and (4) objects and document type definition development.…

Describes research that was conducted to investigate the needs and characteristics of noncomputer professionals who use word processing software on personal computers. A model of the intermittent user's performance is presented, and two experiments are described that examined differences in mode of interaction and the use of online help. (30…

This document presents hypotheses about how much understanding a user needs to perform skillfully using a computer or a computer program. A framework for characterizing user understanding is presented which includes three criteria for evaluating the representation generated during problem solving: (1) internal coherence--whether the components of…

Arguing that sufficient theory exists about the interplay between human information processing, computer systems, and the demands of various tasks to construct useful theories of human-computer interaction, this study presents a structural model of human-computer interaction and reports the results of various statistical analyses of this model.…

One of the responsibilities of the National Science Foundation (NSF) is to support the effective dissemination of scientific information. The performance of this responsibility requires NSF to evaluate alternative information systems/services which are proposed for this purpose. This responsibility necessitates making decisions which are similar…