Two useful observations are possible when thoroughly looking at the cathode-ray display of a computer. First, the structure of a color image is seen with a moderate magnification. Second, the decay of different phosphors corresponding to the red, green, and blue primary colors is observable with a photodiode and oscilloscope.

The purpose of the current study was to examine the effects of a multicomponent intervention that included discrimination training, real-time visual feedback, and self-monitoring on postural behavior at a computer workstation in a simulated office environment. Using a nonconcurrent multiple baseline design across 8 participants, the study assessed…

Discussion of the distribution of power to personal computers and computer terminals addresses options such as extension cords, perimeter raceways, and interior raceways. Sidebars explain: (1) the National Electrical Code; (2) volts, amps, and watts; (3) transformers, circuit breakers, and circuits; and (4) power vs. data wiring. (MES)

The psychological tendency to behave socially with a computer is quite well documented in the literature. But does the short-term socialness of human-computer interaction extend over to long-term social relationships with computers? In particular, do we show loyalty to particular computer terminals over a period of time? An electronic observation…

This article introduces a new computer conferencing metric called Scan Rate, which is a measure of students' and instructors' online reading speed. The term "scan" refers to the practice of either skimming through a message at an unusually rapid pace or reading a message partially and then stopping before the end is reached. It is…

This guide describes the various hardware and software components needed for computer-to-computer communications in nontechnical language and provides guidelines for selecting an appropriate communications package for a microcomputer. Hardware components discussed include both internal and external modems and the advantages and disadvantages of…

Student computer laboratories are provided by most teaching institutions around the world; however, what is the most effective layout for such facilities? The log-in data files from computer laboratories at a regional university in Australia were analysed to determine whether there was a pattern in student seating. In particular, it was…

This guide describes maintenance procedures for IBM and Apple personal computers, provides information on detecting and diagnosing problems, and details diagnostic programs. Included are discussions of printers, terminals, disks, disk drives, keyboards, hardware, and software. The text is supplemented by various diagrams. (EW)

Describes the power of queuing models as a source of detailed, expected performance measures for online catalogs. An illustration of such a performance analysis is provided, and its value to library administrators is discussed. (9 notes with references) (CLB)

Reviews current research on the hazards of using video display terminals, such as eye strain and musculoskeletal problems. Gives recommendations for improvements in the work environment and employer policies. (SK)

In this paper, we propose an auxiliary "location network", to support user-independent context-awareness in educational data networks; for example, to help visitors in a museum. We assume that, in such scenarios, there exist "service servers" that need to be aware of user location in real-time. Specifically, we propose the implementation of a…

Presents an overview of the issues related to extremely low frequency (ELF) radiation from computer video display terminals. Highlights include electromagnetic fields; measuring ELF; computer use in libraries; possible health effects; electromagnetic radiation; litigation and legislation; standards and safety; and what libraries can do. (Contains…

Describes the use and applications of the communications program Telenet for remote log-in, a basic interactive resource sharing service that enables users to connect to any machine on the Internet and conduct a session. The Virtual Terminal--the central component of Telenet--is also described, as well as problems with terminals, services…

In a remote Aboriginal Australian (Kunibidji) community, three touch-screen computers containing 96 Ndjebbana-language talking books were made available to children in informal settings. The computers' popularity is explained by the touch screens' form and the talking books' intertextual and hybrid nature. The Kunibidji are transforming their…

Provides a checklist for troubleshooting malfunctions in classroom microcomputers and explains steps involved for each component. Areas that are addressed include tools to have available; checking computer cables; disk drives; the computer itself; the monitor, or receiver; printers; and software. (LRW)