共查询到20条相似文献,搜索用时 31 毫秒
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根据美国圣露易斯大学的医学院的研究,近年来不对称型皮肤癌发病率有所上升,特别是左侧的脸颊,头部,手臂和手上的皮肤。 相似文献
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对于许多驾龄已多年的司机来说,开车似乎成了一件习以为常的小事,但据资料统计,往往在路上出大事故的恰恰是这些已有多年驾龄的老司机们,究竟他们哪些常见错误是导致事故的主要原因?这也给“菜鸟”们一个郑重的提醒:不要跟老鸟们学坏哦! 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(6):751-773
An errorable car-following driver model is presented in this paper. An errorable driver model is one that emulates human driver’s functions and can generate both nominal (error-free), as well as devious (with error) behaviours. This model was developed for evaluation and design of active safety systems. The car-following data used for developing and validating the model were obtained from a large-scale naturalistic driving database. The stochastic car-following behaviour was first analysed and modelled as a random process. Three error-inducing behaviours were then introduced. First, human perceptual limitation was studied and implemented. Distraction due to non-driving tasks was then identified based on the statistical analysis of the driving data. Finally, time delay of human drivers was estimated through a recursive least-square identification process. By including these three error-inducing behaviours, rear-end collisions with the lead vehicle could occur. The simulated crash rate was found to be similar but somewhat higher than that reported in traffic statistics. 相似文献
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在连续举办五届"中国卡车司机节"的同时,陕汽重卡加快了产品创新步伐,将具备高速、高可靠性的轻量化重卡奉献给全国的卡车司机朋友们,让用户在感受到陕汽精神关爱的同时,还感受到了最实质的财富产品。作为一家有责任的企业,陕汽对卡车司机的关爱是持续的。 相似文献
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《JSAE Review》1995,16(1):55-60
The increasing number of traffic fatalities in recent years has become a serious social problem, making it imperative to find scientific and effective ways of preventing accidents on the road. An important step in this direction is to identify the causes underlying each accident pattern. This paper presents a study of the causes of rear-end collision, focusing on the danger of the driver's mis-judgment of the brake timing in approaching a preceding vehicle. The results indicated that drivers showed inappropriate judgment in some situations. 相似文献
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李新华——一名普通的卡车驾驶员.卡车是他的谋生工具,更是陪伴多年的老友;驾驶着自己的车,李新华走遍了全国31个省、市和自治区,更在青藏线上留下了难忘的回忆,这是他与众不同的经历.生于1974年的李新华还是 名典型的个体车主,十几年、3辆车,随着国内经济环境和货运市场的变化,他起起落落的生活也仿佛时代的注脚. 相似文献
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Matthew C. Best 《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2019,57(1):64-85
In recent years the application of driver steering models has extended from the off-line simulation environment to autonomous vehicles research and the support of driver assistance systems. For these new environments there is a need for the model to be adaptive in real time, so the supporting vehicle systems can react to changes in the driver, their driving style, mood and skill. This paper provides a novel means to meet these needs by combining a simple driver model with a single-track vehicle handling model in a parameter estimating filter – in this case, an unscented Kalman filter. Although the steering model is simple, a motion simulator study shows it is capable of characterising a range of driving styles and may also indicate the level of skill of the driver. The resulting filter is also efficient – comfortably operating faster than real time – and it requires only steer and speed measurements from the vehicle in addition to the reference path. Adaptation of the steer model parameters is demonstrated along with robustness of the filter to errors in initial conditions, using data from five test drivers in vehicle tests carried out on the open road.
Abbreviations: ADAS: advanced driver assistance systems; CG: centre of gravity; CAN: controller area network; EKF: extended Kalman filter; GPS: global positioning system; UKF: unscented Kalman filter 相似文献