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John V. Draper

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Publications by John V. Draper (bibliography)

1990

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Draper, John V., Handel, Stephen and Hood, Christopher C. (1990): Fitts' Task by Teleoperator: Movement Time, Velocity, and Acceleration. In: D., Woods, and E., Roth, (eds.) Proceedings of the Human Factors Society 34th Annual Meeting 1990, Santa Monica, USA. pp. 127-131.

“N/R”

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Hood, Christopher C., Draper, John V. and Handel, Stephen (1990): Activity and Cooperation in a Multi-Person Teleoperator Cockpit. In: D., Woods, and E., Roth, (eds.) Proceedings of the Human Factors Society 34th Annual Meeting 1990, Santa Monica, USA. pp. 660-663.

“This experiment attempted to determine how members of a teleoperator crew use equipment and interact when performing remote maintenance tasks. The experiment used a modified process analysis technique to record how users performed two typical remote maintenance tasks. Five people participated in the experiment. They were paired into teams representing several experience levels. Participants completed the tasks while two television cameras recorded their actions on videotape. Observers later scored the videotapes using the process analysis chart. The percent of time each participant spent engaged in each activity was calculated, as was the percent of time the participants cooperated and co-acted in the cockpit. This information will be helpful in designing future teleoperator cockpits and other related control rooms.”

1989

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Draper, John V. and Handel, Stephen (1989): End-Effector Velocity and Input Frequency Effects on Teleoperator Performance. In: Proceedings of the Human Factors Society 33rd Annual Meeting 1989. pp. 584-588.

“End-effector velocity defines two types of servomanipulators: operator-paced systems and machine-paced systems. Input frequency limits below human bandwidth may also cause machine-pacing. Two experiments varied end-effector velocity limits (1.01 meters per second, 36.4 centimeters per second, and 76.2 centimeters per second) and input frequency limits (0.16 Hz, 0.32 Hz, 0.61 Hz, and 1.27 Hz). Multivariate analyses of variance found statistically significant input frequency limit effects in one experiment, and significant input frequency and velocity limit effects in the second experiment. Machine-pacing caused by input frequency occurred in the range hypothesized (between 0.32 Hz and 0.64 Hz). The critical velocity limit appeared to be lower than expected (between 76.2 cm and 86.4 cm per second). These results are valuable for future teleoperator designs.”

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