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Glenn Klute

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Publications by Glenn Klute (bibliography)

1994

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Bishu, Ram R., Bronkema, Lisa A., Garcia, Dishayne, Klute, Glenn and Rajulu, Sudhakar (1994): Tactility as a Function of Grasp Force: Effects of Glove, Orientation, Load and Handle. In: Proceedings of the Human Factors and Ergonomics Society 38th Annual Meeting 1994. pp. 597-601.

“The objectives of this research are to ensure that a reduction in tactile sensitivity was causing a reduction in gloved performance, and to measure this reduction in tactile sensitivity through grasp force at the hand/handle interface under a variety of performance conditions. The effects of glove type, load lifted, handle size, and handle orientation on the initial grasping force and stable grasping force were determined through a factorial experiment in which 10 subjects participated. The working hypothesis was that grasp force would be a function of all the above mentioned factors. The most consistent findings of this experiment were: 1. Glove effect is marginal at submaximal exertions. 2. The magnitude of force exertions in the advanced glove and bare handed conditions were similar. 3. The magnitude of force exertion was the highest with meat packing gloves. 4. The ratio of peak to stable grasp force increased with increasing loads. 5. The glove effect for maximal exertions as seen in experiment 2 is consistent with published evidence. In conclusion, it is clear from these experiments that when people perform a grasping action, the maximal exertions are affected differently by gloves than sub-maximal or "just holding type of exertions."”

1993

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Bishu, Ram R., Klute, Glenn and Kim, Byungjoon (1993): The Effects of Extra Vehicular Activity (EVA) Gloves on Dexterity and Tactility. In: Proceedings of the Human Factors and Ergonomics Society 37th Annual Meeting 1993. pp. 826-830.

“Human capabilities such as dexterity, manipulability, and tactile perception are unique and render the hand as a very versatile, effective and a multipurpose tool. This is especially true for unknown microgravity environments such as the EVA environment. Facilitation of these activities, with simultaneous protection from the cruel EVA environment are the two, often conflicting, objectives of glove design. The objective of this study was to assess the effects of EVA gloves at different pressures on human hand capabilities. A factorial experiment was performed in which three types of EVA gloves were tested at five pressure differentials. The independent variables tested in this experiment were gender, glove type, pressure differential, and glove make. Six subjects participated in an experiment where a number of dexterity measures, namely time to tie a rope, and the time to assemble a nut and bolt were recorded. Tactility was measured through a two point discrimination test. The results indicate that a) With EVA gloves there is a considerable reduction in dexterity, b) performance decrements increase with increasing pressure differential, and c) some interesting gender glove interactions were observed, some of which may have been due to the extent (or lack of) fit of the glove to the hand. The implications for the designer are discussed.”

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