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Frederick H. Rohles

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Publications by Frederick H. Rohles (bibliography)

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1988
 
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Laviana, Joseph E. and Rohles, Frederick H. (1988): Air Travel and Contact Lenses: A Laboratory Study. In: Proceedings of the Human Factors Society 32nd Annual Meeting 1988. pp. 450-454.

The cabin of an inflight aircraft contains approximately 10% relative humidity (rh). To investigate the impact of this environment on eye comfort, an inflight humidity profile was simulated in a controlled laboratory setting. The experiment was replicated 3 times using a group of 4 subjects (2 males; 2 females) per test. Participants served in both control and experimental roles by wearing a hydrophilic contact lens on one eye and no lens on the other. Subjects provided evaluations of "eye comfort" for both eyes (contact and naked) at specified intervals during the 10-hour test. The results indicated that at 10% rh, there was no significant difference in eye comfort for either wearers or non-wearers of soft contact lenses. However, comfort decreased with the length of exposure (flight time), and for duration of six hours or longer a significant annoyance was reported.

© All rights reserved Laviana and Rohles and/or Human Factors Society

 
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Rohles, Frederick H. (1988): A Model for Describing Performance and Productivity. In: Proceedings of the Human Factors Society 32nd Annual Meeting 1988. pp. 519-521.

A model for describing performance and productivity is presented as an equation in which Performance (P) is equal to the product of basic skills or ability (A) and motivation or drive (D), plus an oscillatory communication, training, and environment. Emphasis is placed on the multiplicative function of ability and drive and explains how highly motivated persons of average ability can exhibit better performance than individuals with the same ability who are poorly motivated. Implications for the human factor community, as it relates to the oscillatory factors, are discussed.

© All rights reserved Rohles and/or Human Factors Society

1987
 
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Laviana, Joseph E., Rohles, Frederick H. and Hoffberg, Linda I. (1987): Dry Environments: The Influence of Low Humidity on Comfort and Health. In: Proceedings of the Human Factors Society 31st Annual Meeting 1987. pp. 1101-1104.

Individuals are routinely subjected to dry environments. These conditions may result from geographic areas, the heating of indoor spaces, or specialized settings (e.g. commercial aircraft cabins). This paper examines the affect of low humidity from two perspectives: comfort and health. Results indicate that the dry-bulb temperature is only 7.8 times more important than relative humidity (rh) in determining the subjective thermal response, and that rh has a greater role in determining how men feel than how women feel. Additionally, it was shown that a perceivable level of annoyance is experienced by both wearers and nonwearers of soft contact lenses at or below 30% rh, and this effect becomes most pronounced after four hours. Other findings indicated that the perception of varying odor intensity levels (e.g., cigarette smoke) is higher in dry environments; several studies are also reported showing the health related benefits of humidification.

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

 
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Changes to this page (author)

25 Jun 2007: Modified
25 Jun 2007: Modified
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URL: http://www.interaction-design.org/references/authors/frederick_h__rohles.html
Jun 18

Computer programs emerge as the outcome of complex human processes of cognition, communication and negotiation, which serve to establish the meaningful embedding of the computer system in its intended use context.

-- Floyd, 1992, p. 24

 
 

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
 
 

Help us help you!