Methods Apply instrument of heart electricity guardian to monitor patient s blood oxygen saturation degree, the heart rate, observing the patient s consciousness and breath to recover time; Apply WRFFQ (The Newly Developed Questionnaire for Work Relateted Fatigue Feeling) to evaluate the member s tired degree.

Effects of the surface brightness of grooved drum to operators′ visual fatigue

The reasons of causing visual fatigue is introduced and the effect of different colors of colored paper on visual fatigue is analyzed.

But as looking at objects moving at high speed may cause eyestrain, in the cab of high speed locomotive, concentrating on fast moving sleepers for a long time may also lead to visual fatigue or dizziness.