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Cumulative vs. local models of operator utilization describing an air traffic control task

Lee, PJ and Kolling, A and Wang, H and Chien, SY and Lewis, M (2011) Cumulative vs. local models of operator utilization describing an air traffic control task. In: UNSPECIFIED.

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Abstract

Using classical methods the time course of workload over a work session is rarely observed. Subjective measures of necessity are for the entire session rather than instantaneous. While this distinction makes little difference to researchers wanting to compare task difficulty, it is important to designers of systems that wish to schedule operator attention because they must predict workload. The present study provides an experimental setting in which intervals of continuous work and uninterrupted rest can be precisely controlled. No differences in probability of error or latency of response were found for the length of break/rest intervals or their location in a sequence of intervals. The local utilization within a break/work interval (ratio of work/(work + rest)), however, was significant, suggesting that utilization effects are strictly local and that simple algorithms could be used to optimize human-system performance for such tasks. © 2011 IEEE.

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Details

Item Type: Conference or Workshop Item (UNSPECIFIED)
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Lee, PJ
Kolling, A
Wang, H
Chien, SY
Lewis, M
Date: 23 December 2011
Date Type: Publication
Journal or Publication Title: Conference Proceedings - IEEE International Conference on Systems, Man and Cybernetics
Page Range: 2836 - 2841
Event Type: Conference
DOI or Unique Handle: 10.1109/icsmc.2011.6084111
Schools and Programs: School of Information Sciences > Information Science
Refereed: Yes
ISBN: 9781457706523
ISSN: 1062-922X
Related URLs:
Date Deposited: 15 Jun 2012 18:13
Last Modified: 11 May 2019 14:55
URI: http://d-scholarship.pitt.edu/id/eprint/12391

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