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Seoungyeon Oh

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Publications by Seoungyeon Oh (bibliography)

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1995
 
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Radwin, Robert G., Oh, Seoungyeon and Fronzcak, Frank J. (1995): A Mechanical Model of Hand Force in Power Hand Tool Operation. In: Proceedings of the Human Factors and Ergonomics Society 39th Annual Meeting 1995. pp. 548-552.

A three-dimensional static equilibrium mechanical model of power hand tool operation was developed and used for comparing hand force associated with use of nutrunners having similar operating parameters (i.e. torque and feed force) but different physical parameters (i.e. shape, size, and mass distribution). The model used a Cartesian coordinate system relative to the orientation of the handle grasped in the hand using a power grip. Several important relationships between tool parameters and required hand force were revealed. Resultant hand force associated with different torque and feed force requirements were compared between four pistol grip nutrunners, and between pistol grip and right angle tools used for the same operation. Accessory handles and counterbalancers are also included in the model. Further development and validation of this model will be useful to power hand tool designers and tool engineers.

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

1994
 
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Oh, Seoungyeon and Radwin, Robert G. (1994): Dynamics of Power Hand Tools on Operator Hand and Arm Stability. In: Proceedings of the Human Factors and Ergonomics Society 38th Annual Meeting 1994. pp. 602-606.

Threaded fastener tightening was studied to determine effects of tool dynamics (torque and build-up time) and workstation configuration (orientation, horizontal distance and height) on operator kinematics and ability to stabilize a right-angle power hand tool. Hand velocity, hand displacement, tool torque, and spindle angle were recorded during tool operation. Four subjects participated. Workstation factors and tool dynamics had significant effects on hand stability. The magnitude of hand velocity and displacement was significantly greater for (1) vertical work surfaces compared to horizontal work surfaces; (2) vertical work surfaces higher than 90 cm above the ground; (3) horizontal work surfaces 90 cm above the ground; (4) increasing torque levels, and (5) long torque build-up times. Subjective ratings of perceived exertion were greater for increasing torque levels, long build-up times, and increasing workstation heights. Perceived exertion was significantly related to hand velocity and displacement (p<0.05), however, the strength of the correlation was small (R{squared} ranged between 0.01 and 0.10).

© All rights reserved Oh and Radwin and/or Human Factors Society

1991
 
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Radwin, Robert G. and Oh, Seoungyeon (1991): Handle and Trigger Size Effects on Power Tool Operation. In: Proceedings of the Human Factors Society 35th Annual Meeting 1991. pp. 843-847.

 
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24 Feb 2010: Modified
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May 23

Knowledge is commonly socially constructed, through collaborative efforts towards shared objectives or by dialogues and challenges brought about by different persons' perspectives.

-- G. Salomon (in "Distributed Cognitions: Psychological and Educational Considerations")

 
 

Featured chapter

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

Read Steve's chapter !

 
 

Help us help you!