This paper discusses research on the processes by which individuals progress toward expertise in scientific domains, focusing on the activity of constructing qualitative problem representations during solution of standard mechanics problems in physics. It includes information on: (1) descriptive analyses of problem-solving performance; (2)…

Describes the emphasis of decision support systems as being on the decision making process itself, rather than the flow of information; reviews the uses of microcomputers in libraries in recent years; and compares five decision modeling software packages. An appendix lists the name, manufacturer's address, price, and hardware requirements of each…

The Drug-Interface, prototype system built to facilitate retrieval of drug related information, automatically connects to DIALOG Information Retrieval Service via available networks, aids user in formulating and/or revising search strategy, sends query to DIALOG, displays results of search, and downloads relevant pieces into Macintosh data file.…

Suggests a model of human cognition by describing similarities between human and electronic computers. This model might guide the development of software so that it is sufficiently powerful and flexible to be of value to human computers as they construct new knowledge in chemistry. (JN)

Creating educational software generally requires a great deal of computer expertise, and as a result, educators lacking such knowledge have largely been excluded from the design process. Recently, researchers have been designing tools for automating some aspects of building instructional applications. These tools typically aim for generality,…

Presents accumulated insights for benefit of colleagues considering embarking on software development projects. Original purpose of project was to produce a set of grammar revision and extension modules allowing teachers to use computers as a means of ensuring that once a language point had been dealt with in class, students could be required to…

Describes a preliminary test on graduate students of a software tool designed to perform computations required in event sequence analysis, that will enable researchers to measure and empirically test student interactions and critical thinking in threaded discussions. Explains the Discussion Analysis Tool (DAT) and suggests implications for…

Reports on a one-year action research study at the University of Cambridge (United Kingdom) which explored processes by which a cohort of postgraduate teacher trainees learned personal information and communication technology (ICT) skills. Discusses learning strategies reported by students in interviews; considers previous experience and software…

Discusses a computer-assisted language learning model developed by the Didascalia center designed to comply with as many Belgian criteria as possible and based on contents and events in an object-oriented approach. Describes how the didacteme as basic object can enhance learner-content interaction and how this approach can lead to a new platform…

Considers the possibility of designing CAI (computer-assisted instruction) systems that are managed by semantic networks. Topics discussed include general descriptions of the suggested approach, lesson-presentation modes, and the architecture of a CAI system managed by a semantic network. (10 references) (MES)

Focuses on four issues related to providing government numeric databases in libraries: hardware, access software, staff skills, and organizing services. Basic, intermediate, and advanced levels of service and a guide for selecting an appropriate level are presented. Examples of screens from actual searches are included. (Contains eight…

The effects of 2 different kinds of descriptive models (metaphor and flow chart) on the learning of a computer command language were studied for 37 computer experienced and 47 nonexperienced undergraduates (57 females and 27 males). Results show that metaphor improves performance of most subjects on most transfer items, with inexperienced subjects…

Discussion of information systems methodologies that can contribute to interface design for public access systems covers: the systems life cycle; advantages of adopting information systems methodologies; soft systems methodologies; task-oriented approaches to user interface design; holistic design, the Star model, and prototyping; the…

Explores problems in information sharing; discusses the concept of metadata; illustrates its use on the World Wide Web, as well as other related approaches; and presents an approach to information sharing that uses a semantic modeling language (referent model language) as the basis for expressing semantics of information and designing metadata…

Examines mobile agent coordination and presents TuCSoN, a coordination model for Internet applications based on mobile information agents that uses a tuple centre, a tuple space enhanced with the capability of programming its behavior in response to communication events. Discusses the effectiveness of the TuCSoN model in the contexts of Internet…