To investigate the association between mental or neuro - motor outcomes and the earl conditions , 80 psychomotor retarded children who were non - down ' s syndrome and without neurological impairment were included in this study 摘要?于儿童发展之变异性较高,早期无神经异常症状之身心发展迟缓儿童,长大后可能成为智能不足儿童、脑性麻痹儿童或正常儿童,但影响他们的预后之早期各项因素并不十分清楚。
These tasks are termed psychomotor skills or perceptual - motor skills because they require a continued motor response to a continuous series of stimuli . car - following theory , is one of the basal traffic flow theory , has being researched since 1950 ' s in the world . although many models had been put into practice , because of existing defect in each model , and difference of local traffic flow characteristics , there was not one model can be accepted widely 车辆跟驰理论作为最基础的交通流理论分支,国外在这方面的研究已经持续了半个多世纪,尽管现有的许多跟车模型已经应用于实践,但由于每个模型都存在或多或少的不足,以及各地交通流特性的差异,导致目前尚未有被普遍接受的跟车模型。
The commonly used detecting and evaluating techniques include the drowsy driver detection system , the steering attentio n monitor , the road alert system and the psychomotor vigilance tester , etc . fatigue driving is a serious problem that leads to thousands of vehicle crashes each year . the drowsiness and fatigue may play an important role in traffic crashes . of the drowsiness - detection measures and technologies evaluated in this study , the measure referred to as " perclos " is found to be the most reliable and valid determination of a drivers alertness level 机动车驾驶员驾驶疲劳特指驾驶员在连续行车后所产生的生理和心理机能以及驾驶操作效能下降的现象,也就是正常的机动车驾驶员(年龄20岁至60岁,身体状况良好,有一年以上道路驾驶经验)由于身体状况、精神状态、连续驾驶时间过长等原因造成的不能对意外情况做出及时正确的反应并正常操作控制机动车辆的身体状态。