Engineering Asset Management 2016 by Ming J. Zuo Lin Ma Joseph Mathew & Hong-Zhong Huang

Author:Ming J. Zuo, Lin Ma, Joseph Mathew & Hong-Zhong Huang
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

4.2 Improvement of Sustained Attention

In the FSAMM, we defined y = 50 (%) as good status, and in the first experiment the average performance of preliminary vigilance is 47.31 (%). Therefore, the performance value 50 (%) of y* was defined as the threshold for producing an alarm signal. If the value of y* was smaller than 50 (%), the system would produce an alarm signal to warn the participant to maintain his/her sustained attention.

In the sustained attention experiment, we found that the preliminary attention performances of participants #4 and #11 to #18 were poor, so the fuzzy alarm activated. A differences of means test showed that these three participants’ sustained attention performances were significantly better than in the preliminary attention. However, we also found that the means of the sustained attention performance of some participants was poor than in the preliminary attention when the FSAMM not working. These findings indicated that the effect of an alarm for improving the sustained attention performance is significant when the performance of preliminary attention of participants is poor.

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