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Jo W. Tombaugh

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Jo W. Tombaugh

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Publications by Jo W. Tombaugh (bibliography)

» 1990 «

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Dillon, Richard F., Eday, Jeff D. and Tombaugh, Jo W. (1990): Measuring the True Cost of Command Selection: Techniques and Results. In: Carrasco, Jane and Whiteside, John (eds.) Proceedings of the ACM CHI 90 Human Factors in Computing Systems Conference 1990, Seattle, Washington,USA. pp. 19-25.

“A technique that measures the impact of command selection on task time and errors in described. Users were timed while performing a drawing task, then while performing the same task with interpolated command selections. The difference between these times, consisting of both the time to select the command and to resume drawing, is the time cost of command selection. Several interface configurations were evaluated with this method including selected combinations of single mouse, two mice, voice and touch. Touch and voice input resulted in faster command selection times (approximately 1 sec) than any of the mouse conditions (approximately 3 sec).”

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» Fitts's Law: [/encyclopedia/fitts_law.html]

» 1985 «

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Tombaugh, Jo W., Arkin, Michael D. and Dillon, Richard F. (1985): The Effect of VDU Text-Presentation Rate on Reading Comprehension and Reading Speed. In: Borman, Lorraine and Curtis, Bill (eds.) Proceedings of the ACM CHI 85 Human Factors in Computing Systems Conference April 14-18, 1985, San Francisco, California. pp. 1-6.

“The effect of video display unit presentation rate on reading performance was investigated. Reading material was presented at one of the following presentation-rates: 15, 30, 120, 960 cps, or "instant". In the instant condition, the full text appeared simultaneously on the screen. In the other conditions, text appeared one character at a time starting in the upper left corner of the screen, from left to right and top to bottom. Reading comprehension was highest under the 30 cps and instant presentation conditions. Total time to perform the reading task was equivalent for all conditions except the 15 cps rate which required a longer time to complete the task. In terms of comprehension and time to perform the task, a slow rate of 15 cps, contrary to previous recommendations, is not desirable for novice computer users.”

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» 1982 «

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Tombaugh, Jo W. and McEwen, Scott A. (1982): Comparison of Two Information Retrieval Methods on Videotex: Tree-Structure versus Alphabetical Directory. In: Nichols, Jean A. and Schneider, Michael L. (eds.) Proceedings of the SIGCHI conference on Human factors in computing systems March 15-17, 1982, Gaithersburg, Maryland, United States. pp. 106-110.

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Staisey, Nancy L., Tombaugh, Jo W. and Dillon, Richard F. (1982): Videotex and the Disabled. In International Journal of Man-Machine Studies, 17 (1) pp. 33-50

“The potential of videotex for use by the disabled, and problems in the use of videotex by the disabled are summarized and discussed. Videotex is a system which allows users to access a powerful central computer over the telephone lines using a keypad or keyboard for input and a colour television set for output. In the home, office or hospital, the disabled will have access to information retrieval, electronic mail, teleshopping, games and computer aided instruction, as well as environmental monitoring and control using widely available, low cost equipment. The special problems of input and output of videotex by blind, deaf and motor impaired individuals are discussed. Various hardware (i.e. equipment) and software (i.e. programming) techniques to overcome these problems are described.”

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Tombaugh, Jo W., Dillon, Richard F. and Carboni, Nancy L. (1982): Evaluation of graphics on videotex by inexperienced users. In: Graphics Interface 82 May 17-21, 1982, Toronto, Ontario, Canada. pp. 339-344.

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