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Proceedings
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Scientific and Technical Aerospace Reports
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Ergonomics
Because of the 'applied' nature of ergonomics there are many outstanding pieces of work that have never been published in the archival literature. These volumes collect some of those papers that have attained classical status.
Human Pilot Dynamic Response in Single-loop Systems with Compensatory and Pursuit Displays
The primary purpose of the experimental series reported here is to investigate, on a preliminary and exploratory basis, human operator performance differences between pursuit and compensatory displays. For each display type a wide range of forcing function bandwidths and controlled element dynamics was used. The effect of the additional information provided by separately displaying both forcing function and controlled element output (pursuit) rather than their difference (compensatory) was evaluated using the mean-squared error and a quantity called the 'effective open-loop describing function' (Y beta). As a prelude to the new data, past pursuit/compensatory tracking results are reviewed, and then a tie-in is made between these and the current series.
Effects of Manipulator Restraints on Human Operator Performance
This report is concerned with a series of experiments in which the effects of manipulator restraints, i.e., load dynamics imposed on the operator, are central. The purposes of this investigation are to: Determine the load effects on the human operator's describing functions and performance measures for a representative variety of manipulator restraints and controlled elements. Provide inferential insight into the relative importance of limb position and output force senses in manual control.
Report
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