高速公路改扩建作业区交通安全设施设置研究

根据高速公路改扩建施工区的交通特性及驾驶人的反应特征,将施工作业区划分为7个分段,构建驾驶人视认模型,并对各个分段安全设施进行设置,可保障高速公路施工作业区的安全与通畅,这已被郑洛高速公路所证实。     

Port e-Transformation,customer satisfaction and competitiveness

ABSTRACT

e-Transformation in container ports means port organization-wide innovative transformation encompassing internal and external value chains based on information and communication technology. There is a considerable theoretical literature on the impact of e-Transformation on business performance, but there is very little empirical study on its effectiveness in ports. The objective of this paper is to empirically investigate how e-Transformation in container port management can influence customer satisfaction and port competitiveness. The findings reveal that e-Transformation in container ports can affect customer satisfaction and port competitiveness through e-Workplace, customer relationship management and security, implying that container ports should make every effort to focus on e-transformation in these critical areas. Due to limited empirical studies in this area, the findings have provided an empirical support for the importance of e-Transformation in container terminal management and shed more light on how e-Transformation can affect customer satisfaction and port competitiveness.     

Trip generation and distribution: the inconsistency problem and a possible remedy

There are many shortcomings commonly associated with the conventional urban transportation modeling process. This paper focuses on one of the more important problems — the inconsistency between trip generation and distribution components — and suggests a possible way of alleviating it. The suggested approach involves sorting out the independent effects on tripmaking of origin, destination and travel cost characteristics, and introducing accessibility measures explicitly into the modeling process. The resulting modeling framework can be used to obtain consistent estimates of trip generation and distribution quantities which are responsive to changes in the transportation and spatial systems.     

辽东山区预防土壤砂砾化的技术措施

简要介绍了辽东山区17万hm 2砂砾化山丘的现状,概述砂砾化山丘的类型、特点,并提出了植物措施、工程措施、封育措施等几种预防砂砾化山丘的技术措施。     

EXPERIMENTAL STUDY OF INFLUENCE OF LIQUID NITROGEN PRESERVATION ON ANTIGENICITY OF HUMAN HOMOGRAFT AORTIC VALVE

Ｈｏｍｏｇｒａｆｔａｏｒｔｉｃｖａｌｖｅ（ＨＡＶ）ｈａｓｂｅｅｎｕｓｅｄｉｎｃｌｉｎｉｃａｌｐｒａｃｔｉｃｅｆｏｒ３０ｙｅａｒｓ．Ｉｔｈａｓｓｈｏｗｅｄｍａｎｙｓｕｐｅｒｉｏｒｉｔｉｅｓｃｏｍｐａｒｅｄｗｉｔｈｍｅｃｈａｎｉｃａｌｖａｌｖｅａｎｄｈｅｔｅｒｏ－ｔｉｓｓｕｅｇｒａｆｔｓ．ＨＡＶｉｓａｎａｔｕｒａｌｖａｌｖｅ．Ｉｔｓｈｉｓｔｏｌｏｇｉｃａｌｓｔｒｕｃｔｕｒｅａｎｄｍｏｒｐｈｏｌｏｇｉｃａｌｆｕｎｃｔｉｏｎａｒｅｓｉｍｉｌａｒｔｏｎｏｒｍａｌｐｈｙｓｉｏｌｏｇｉｃａｌｓｉｔｕａｔｉｏｎ…     

铁路延伸客服系统设计方案研究

随着客运专线铁路及电子商务的兴起，延伸铁路客运服务信息系统将为旅客提供更加便捷高效的服务，介绍了延伸旅客服务信息系统的总体方案及设计。     

结合兰州彭家坪T210#路建设浅淡城市高坪地区道路选线

城市高坪地区通常存在区域交通不畅的问题,出口道路经常制约着城市高坪地区的经济、文化发展.该文结合兰州市彭家坪T210#路路线选择,总结了城市面上高坪地区选线的几点经验,可供道路专业人员参考.     

贵阳市西南环线二期总体方案

贵阳市西南环线二期位于城市中心区东南部,地形起伏大,属于旧路拓宽改建项目。针对项目特点,对总体思路、方案布置等方面进行了介绍,为类似山区城市道路方案研究提供参考。     

高速铁路精密工程平面控制网复测方案

高速铁路由于运行速度快对铁路的平顺性要求很高,所以对铁路的控制测量相应地提出了很高的要求,与传统的测量方法、精度要求等存在一定的区别。该文主要介绍新建沪昆铁路客运专线精密工程平面控制网复测方案,可供同行参考。     

Rolling horizon control framework for driver assistance systems. Part II: Cooperative sensing and cooperative control

This contribution furthers the control framework for driver assistance systems in Part I to cooperative systems, where equipped vehicles can exchange relevant information via vehicle-to-vehicle communication to improve the awareness of the ambient situation (cooperative sensing) and to manoeuvre together under a common goal (cooperative control). To operationalize the cooperative sensing strategy, the framework is applied to the development of a multi-anticipative controller, where an equipped vehicle uses information from its direct predecessor to predict the behaviour of its pre-predecessor. To operationalize the cooperative control strategy, we design cooperative controllers for sequential equipped vehicles in a platoon, where they collaborate to optimise a joint objective. The cooperative control strategy is not restricted to cooperation between equipped vehicles. When followed by a human-driven vehicle, equipped vehicles can still exhibit cooperative behaviour by predicting the behaviour of the human-driven follower, even if the prediction is not perfect.The performance of the proposed controllers are assessed by simulating a platoon of 11 vehicles with reference to the non-cooperative controller proposed in Part I. Evaluations show that the multi-anticipative controller generates smoother behaviour in accelerating phase. By a careful choice of the running cost specification, cooperative controllers lead to smoother decelerating behaviour and more responsive and agile accelerating behaviour compared to the non-cooperative controller. The dynamic characteristics of the proposed controllers provide new insights into the potential impact of cooperative systems on traffic flow operations, particularly at the congestion head and tail.