重复发生发动机烧瓦事故原因的分析

结合多年修理发动机的实践，对重复发生发动机烧瓦事故的原因进行了分析，并提出了具体解决方法。只要按照《发动机修理技术规程》中的要求进行修理作业。注意清洗干净润滑系统同步协调重视修好相关零部件的变形，查清产生原因并消除事故隐患， 就会有效地防止发动机烧瓦事故的重复发生。     

整治“外挂”车辆 营造“公平”环境

必须认清外桂和不规范驻地经营现象存在的危害性,采取切实有效的措施,开展治理外桂工作,营造公平的竞争环境．推动道路运输业健康、有序地发展。     

水泥混凝土路面施工工艺分析

水泥混凝土路面具有强度高、稳定性好、耐久性强、使用寿命长、日常养护费用少,有利于夜间行车等优点。因而要保证水泥混凝土路面具有良好的使用性能,不仅要精心设计,而且要精心施工,在施工中确保施工质量。结合工程实践,从原材料的选择、施工准备、混合料运输、摊铺、振捣等方面对混凝土路面施工工艺进行论述。     

船舶远程识别和跟踪系统(LRIT)

根据SOLAS公约新的规定,船舶远程识别和跟踪系统（LRIT）即将付诸实施。文章对该系统的构成、功能和特点作了相应的介绍,可供船舶从业人员参考。     

某输油管道刺漏调查分析

某输油管道在5天之内发生了2次泄漏事故,造成了巨大的经济损失。对两次泄漏事故和抢修过程进行了深入调查,对导致输油管道泄漏的各种原因进行了分析。依据管道刺漏形貌及位置,认为内壁腐蚀导致管道穿孔。对管道铺设轨迹进一步调查,研究结果表明管道两次刺漏位置均发生在低谷位置。认为密度较大的水等腐蚀介质容易在管道低谷位置积聚,其液面位置容易腐蚀。根据调查分析结果,对防止输油管道穿孔提出了建议。     

The effect of governmental subsidies and the contractual model on the publicly-owned bus sector in Japan

The publicly-owned municipal bus sector that provides local transport in Japan is in a difficult situation because of operating deficits, inefficient operations and management, and budgetary constraints of expanding subsidies, and thus, it needs to be restructured to improve efficiency. This paper investigates the impact of subsidies and contractual settings on the cost structure of the publicly-owned bus sector in Japan. A trans-log cost function has been estimated by pooling cross-sectional data of 527 observations over the time period of 1990-2006 for a cross-section of 31 publicly-owned transport companies in Japan. Our analytical results confirm that governmental subsidies to this sector negatively affect the cost structure, while the contractual model may have a positive impact. We also discuss the implications of these results for Japan’s public transport policy.     

山区公路避险车道设置分析

在山区高速公路长大下坡路段,经常出现载重货车因制动失效而发生交通事故的现象。通过对载重货车失控时受力分析,探讨车辆在长大下坡路段制动失效的原因和规律,得出载重货车在长大下坡路段制动失效与坡度、坡长关系及制动失效后速度与坡长、坡度的计算公式,提出避险车道设置合理位置的原则。     

浅谈公路工程概、预算编制的几点关键

公路工程工程概、预算其编制工作不仅重要,而且直接影响工程技术方案的取舍.结合几年的工作,谈谈公路工程概、预算编制的几点关键.     

公路主枢纽站场总体布局方案优选模型及算法

在公路主枢纽站场总体布局中 ,可采用多种方法得出若干个布局方案 ,但方案优选是一件复杂的工作 .笔者利用系统工程的方法建立了方案优选模型 ,并对判断矩阵构成、一致性检验及处理、层次排序针对问题特性提出了算法 ,还给出了应用程序框图及程序特点 .模型及算法对公路主枢纽站场布局规划、初步设计中的方案变更及其相关规划设计项目有应用价值     

Nature of influence of out‐of‐vehicle time‐related attributes on transit attractiveness: a random parameters logit model analysis

This paper describes the nature of the impacts of walking distances and waiting time on transit use. The relative trade‐offs of walking and transfer components with other transit service attributes are also discussed. A total of 449 completed stated‐preference interviews were collected; with six observations from each respondent, the total number of observations was 2694. This data set was used to estimate the coefficients in different utility functions using a random parameters logit model. The results demonstrated that walking distances to and from transit stops have important and significant nonlinear negative influences on the attractiveness of transit. Transfer waiting time was also shown to have a significant nonlinear negative impact on transit attractiveness. The random parameters logit model had a better model fit than the standard logit model. Some of the findings obtained here are novel, while others are consistent with previous works. These findings have implications for both theory and practice. Copyright © 2014 John Wiley & Sons, Ltd.