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ReferencesNavigation arrowAuthorsNavigation arrowMargaret T. Shaffer
Jun 19

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Margaret T. Shaffer

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Publications by Margaret T. Shaffer (bibliography)

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1989
 
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Shaffer, Margaret T. (1989): Use of the EVTA Process in the Evaluation of Human/System Interaction and Performance. In ACM SIGCHI Bulletin, 21 (2) pp. 89-91.

“The EVTA process generates a task-descriptive data base (Dury et, al., 1987, page 375) from a detailed analysis of operator's observable activities and communications. The essential features of the EVTA process are the use of video/audio equipment to gather permanent records of operator activities from operational environments, and the generation of an empirical record of activity times through a software package which builds, manages and analyzes the resulting data base.”

© All rights reserved Shaffer and/or ACM Press

1988
 
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Shaffer, Margaret T., Hendy, Keith C. and White, Lou R. (1988): An Empirically Validated Task Analysis (EVTA) of Low Level Army Helicopter Operations. In: Proceedings of the Human Factors Society 32nd Annual Meeting 1988. pp. 178-182.

“A computer-based Empirically Validated Task Analysis (EVTA) of Canadian Forces light observation helicopter operations was conducted from video records of cockpit activity gathered during flight. The task analysis was performed in order to provide data for function analysis and workload prediction studies in support of the Canadian Forces Light Helicopter replacement project. Observable behaviors were categorized according to the type of activity involved and communications were analyzed for content, agencies involved, and relevance to the crew's task. The results of this study indicate that data gathered from a controlled test environment can differ considerably from those obtained in operational settings and that miniature video cameras can be useful in obtaining information from environments which hitherto may have been inaccessible to all but operational personnel.”

© All rights reserved Shaffer et al. and/or Human Factors Society

 
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25 Jun 2007: Modified
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Jun 19

“ ... there are no simple 'right' answers for most web design questions (at least not for the important ones). What works is good, integrated design that fills a need--carefully thought out, well executed, and tested. ”

-- Steve Krug, Don't Make Me Think, p. 136

 
 

Featured chapter

Read the fascinating history of Wearable Computing, told by its father, Steve Mann

Read Steve's chapter !

 
 

Latest books

The Social Design of Technical Systems: Building technologies for communities
by Brian Whitworth and Adnan Ahmad

 
Start reading

The Encyclopedia of Human-Computer Interaction, 2nd Ed.
by Mads Soegaard and Rikke Friis Dam

 
Start reading
 
 

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