Proposes the use of a special purpose drop-in firewall/VPN gateway called Sieve, that can be inserted between the mobile workstation and the network to provide individualized security services for that particular station. Discusses features and advantages of the system and demonstrates how Sieve was used in various application areas such as at…

Introduces an extension of the Session Initiation Protocol (SIP) for closed multiparty conferences; the extension expands SIP for discovery of participant identities in a conference, and ensures that each participant is notified before a new participant joins. Verifies this extension by applying it to two SIP conference models. Concludes with an…

Discussion of computer-supported collaborative learning (CSCL) focuses on the way in which current instructional design theories can be used to design collaborative learning environments in primary and secondary schools. Highlights include definitions of CSCL; CSCL research, including cognitive approach, systems design, and curricular…

Discussion of computer-assisted learning (CAL) and the instructional functions of audio highlights the development of an interactional audio-CAL system used for second-language learning. Levels of interactivity in media are discussed, hardware that would add audio to a CAL system is described, and future research is suggested. (10 references) (LRW)

Discussion of the rhetoric of disability, including physical, hearing, and visual impairments, highlights possible benefits that computer technology can provide. Designing for disabled individuals is discussed, and product development efforts by Apple Computer to increase microcomputer access to disabled children and adults are described. (LRW)

Describes a project aimed at developing a system to support managers of business software projects by incorporating knowledge acquisition and emphasizing the integration of the manager's tasks. The discussion covers the knowledge acquisition methodology, the architecture of an integrated system, and an overview of project management tasks. (15…

Many school business officials have turned to computer equipment leasing. A lease arrangement permits administrators to stretch annual budgets, to appropriate funds, and to easily upgrade or change equipment. Another alternative to high-cost computer purchase is to buy or lease used equipment. (MLF)

Discusses the teaching consultant process in computer programing courses, describes a teaching consultant model from both the teachers' and students' perspectives, and shows how this model can be used to develop an intelligent teaching consultant (ITC). Differences between this collection of expert systems and conventional intelligent tutoring…

Two articles describe computerized reference systems created for college libraries in New York (Cornell and SUNY Binghamton) and at the University of Virginia, respectively. (TE)

Design considerations for speech training systems include the types of information about speech to be used in training, whether acoustic or physiologic; and the use of models of speech production, whether partially perceptual and partially knowledge-based or explicit data-based models. A taxonomy of speech training systems is presented.…

Discusses the development of computer-assisted music instruction at Ohio State University and describes a courseware development system for the Apple Macintosh microcomputer that facilitates the creation of sophisticated computer-assisted music instruction programs. Walter Hewlett's pitch representation system is described, structured programing…

Discusses the evolution of mainframe and personal computers, and presents a case study of a network developed at the University of Iowa called the Iowa Computer-Aided Engineering Network (ICAEN) that combines Macintosh personal computers with Apollo workstations. Functional objectives are stressed as the best measure of system performance. (LRW)

An approach to the design of flexible text-based management systems for archives includes tiers for repository, software, and user management systems. Each tier has four layers--objective, program, result, and interface. Traps awaiting software development companies involve the market, competition, operations, and finance. (10 references) (MES)

Discussion of electronic performance support systems (EPSS) focuses on performance support engineering and its role in designing performance support systems. Highlights include the organizational performance/learning cycle model; a systems approach to EPSS; computer-based training and other EPSS methodologies; and future possibilities. (LRW)

Gives practical tips on how to retrieve and view images from Internet databases, with a description of image file formats and the requirements for viewing and decompression software. A list of nine image databases and a brief description of the University of Arizona library's digital image project are provided. (Contains four references.) (KRN)