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ReferencesNavigation arrowAuthorsNavigation arrowCharles B. Woolley
Jun 19

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Charles B. Woolley

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Publications by Charles B. Woolley (bibliography)

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2009
 
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Park, Daewoo, Armstrong, Thomas J., Woolley, Charles B. and Best, Christopher J. (2009): Skin and Bone Surfaces for a Three-Dimensional Kinematic Hand Model. In: Proceedings of the Human Factors and Ergonomics Society 53rd Annual Meeting 2009. pp. 1225-1229.

“We have previously described the development of a 20 link, 25 degrees-of-freedom three-dimensional kinematic model of the hand (Buchholz and Armstrong 1992, Choi and Armstrong 2006). Each link corresponds to a segment of the hand. We also showed how this model can be used to predict 1) hand posture and finger placement using contact algorithms and 2) the space required for the hand to reach for and grasp work objects. The present model uses an array of points based on truncated cones to describe the skin surface. This study aims to develop models for describing the surface of the hand that are congruent with the anatomic structure of the hand. These models will improve the model predictions of finger placement and posture, of the space required by the hand, and the hand image. In addition, we also aim to develop models that describe the bones in the hand that will make it possible to study tendon excursions, loads and injuries. Graphic files that describe the surfaces of the hand and the bones were generated from multiple computed tomography images of adult human hands. The centers of flexor and extensor tendons were also identified in the images and located with respect to the above surfaces. These anatomical features were then scaled and added to the link structure of the biomechanical hand model.”

© All rights reserved Park et al. and/or their publisher

1994
 
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Chaffin, Don B., Woolley, Charles B., Buhr, Trina and Verbrugge, Lois (1994): Age Effects in Biomechanical Modeling of Static Lifting Strengths. In: Proceedings of the Human Factors and Ergonomics Society 38th Annual Meeting 1994. pp. 658-661.

“There is growing awareness that age results in reduced strengths in the population, and that significant decreases start in the 5th decade. The magnitude of the decrease in strength depends on the specific muscle function being tested. Because of differential effects it is not clear how various decreases could alter whole-body strength performance. This paper describes how specific strength decreases measured in an older population of men and women could affect their whole-body exertion capabilities in selected scenarios. A computerized strength prediction program is used to both predict the whole-body strength changes with age, and to study how older populations can alter their postures to achieve maximum exertion capability. The results indicate that different muscle group strengths decline by 5% to 70% with age, depending on which muscle group is tested. These changes have profound effects on whole-body exertion capabilities, which also are shown to depend on specific postures used to perform the exertions.”

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

 
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Changes to this page (author)

03 Nov 2010: Modified
26 Jun 2007: Added

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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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