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John B. Shafer

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Publications by John B. Shafer (bibliography)

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1995
 
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Chapanis, Alphonse and Shafer, John B. (1995): Human Factors Methods. In: Proceedings of the Human Factors and Ergonomics Society 39th Annual Meeting 1995. .

1987
 
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Shafer, John B. (1987): Practical Workload Assessment in the Development Process. In: Proceedings of the Human Factors Society 31st Annual Meeting 1987. pp. 1408-1410.

The objective was to structure the concept of workload in a practical way which would permit Human Factors Systems Engineers to apply this concept to various phases of the development process. Workload is a qualitative rather than absolute concept which, like motivation, is inferred to exist by measuring the relative behavioral reactions to certain conditions. Workload may be thought of as an intervening variable between physical, mental, visual, vocal, or auditory antecedent conditions, and whatever performance-based, subjective or physiological measures that may be sensitive enough to reflect changes in the antecedent conditions. The practical approach has been to consider workload as the number of things to do modified by the level of difficulty. This concept has successfully permitted HF Systems Engineers to assess operator workload at progressive levels of system development.

© All rights reserved Shafer and/or Human Factors Society

1984
 
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Shafer, John B. (1984): Human Factors Roles in Military Systems. In: Shackel, Brian (ed.) INTERACT 84 - 1st IFIP International Conference on Human-Computer Interaction September 4-7, 1984, London, UK. pp. 883-888.

A series of vignettes are used to illustrate various Human Factors roles in the life-cycle of military systems. As programs progress through requirements, design, development, evaluation, selling, installation and training; the Human Factors roles flex and change to meet project demands. The successful human interface design, produced on schedule within budget constraints is the result of a great deal of creativity and resourcefulness.

© All rights reserved Shafer and/or North-Holland

 
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Changes to this page (author)

15 Feb 2010: Modified
26 Jun 2007: Added
25 Jun 2007: Added
28 Apr 2003: Added

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May 19

Design can be art. Design can be aesthetics. Design is so simple, that's why it is so complicated.

-- Paul Rand, 1997

 
 

Featured chapter

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

Read Steve's chapter !

 
 

Help us help you!