Vitaly Dubrovsky

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During the past several years, a number of investigators have hypothesized that electronic mail and other computer-mediated communication technologies greatly attenuate social context cues (Hiltz and Turoff, 1978; Short, Williams, and Christie, 1976; Kiesler, Siegel, and McGuire, 1984). Equalization across status categories has been observed in studies of(More)
The paper suggests a structured task analysis and design technique which is based on the "levels-stages" model of a user action. The analysis of existing user tasks employs a top-down strategy. The first stage, dictated by the action model, decomposes the tasks into functional subtasks. The second stage decomposes the subtasks into functionally primitive(More)
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