北京轨道交通网络化客流 特征分析与启示

轨道交通网络化客流特征分析与总结,对于提高轨道交通规划设计与运营管理水平具有重要作用。分析北京轨道交通各条线路的客流成长规律,其中重点分析2007年以来每开通1条新线对既有线网、线路、所涉及车站的影响;分析线网客流特征,主要包括分析各线上下车量时空分布规律、乘坐距离分布趋势、换乘客流时空分布规律、高峰小时客流特征及不均衡性、断面流量特征等;从目前的客流特征出发,分析线网规划、工程设计、运输组织时应注意的若干问题。     

特殊站场红灯断丝转移区段轨道电路编码

结合红灯转移、应答器设置、轨道电路编码和列车运行规则等情况,对采用CTCS-2级列控系统的特殊站场,红灯断丝转移区段轨道电路编码设计方案进行探讨。     

杭州地铁2号线工程自动售检票系统设计

就杭州地铁2号线工程自动售检票系统的设计,介绍了主要设计原则,阐述了五层系统架构及各层的主要功能,总结了设备技术要求,提出了车站设备布置原则,对类似工程设计具有借鉴意义。     

A comparative study on data segregation for mesoscopic energy modeling

On-road vehicles have been considered as one of the major contributors to energy consumption and air pollutant emissions. In order to quantify the corresponding environmental impacts, great efforts have been dedicated to the microscopic and macroscopic modeling for vehicle energy consumption and emissions. However, the mesoscopic modeling research that is focused on estimating trip-based energy consumption and is critical to some ITS applications (e.g., environmentally-friendly navigation), is relatively deficient. This study aims to investigate the effects of different data segregation methods on the mesoscopic modeling for vehicle energy consumption. A variety of novel methods, including the so-called conditional operating mode based method, have been proposed and evaluated using field data. Based on real-world data, statistical analyses have demonstrated the superior performance of enhanced models (i.e., conditional operating mode/VSP based models) in estimating vehicle energy consumption on a trip basis, compared to the other four models (velocity binning, time snipping, distance snipping and VSP based models) tested in this study.     

有限元评估中人孔模拟方法合理性的研究

有限元评估中，对主要支撑构件腹板上的人孔，协调版共同结构规范（CSR-H）要求删除适宜的单元进行模拟。而针对与人孔无本质差异的开口，规范允许采用不模拟开口但修正剪应力的方法。不同的模拟方法会引起人孔周围不同的应力水平。文章分析应力差异产生的原因，并比较各方法下人孔周围的应力集中系数。最后从单元屈服利用率的角度评估不同人孔模拟方法的合理性。     

应用规范进行舵系计算的一点体会

不同的船级社对舵系统的计算都有相应的标准。但有时依据不同的规范,计算结果甚至出入很大。作者就船舶规范在船舶舵系计算中的灵活应用作了简要的介绍。     

构图是摄影作品成功的关键

如何才能拍摄出优秀的摄影作品?对于这些问题有不同的看法,有人认为好的镜头至关重要,有人则认为选择合适的光圈和控制恰当的曝光量,有人却认为把握好最好的拍摄时机,然而我认为要想拍摄出好的摄影作品"构图是关键"。摄影构图应遵循三大基本原则,即主题鲜明、主体突出、简洁明了。本文在分析摄影构图重要性的基础上,教你如何认识、避免那些导致平庸作品的偏差观念,用创造性的思维去观察和感知世界,表现你对世界的新的见解。     

船用核动力装置小破口冷却剂丧失事故处理研究

应用仿真分析软件对船用核动力装置小破口冷却剂丧失事故进行计算分析,对事故发生后采取的两种事故处置方式进行对比分析,结果表明,采取低压保护停堆的事故处置方式更为合理有效。建议对原事故处理规程作进一步验证、修改,以提高事故处理的有效性。     

Utilization of passenger transport subsidy in Kolkata: A case study of Calcutta State Transport Corporation

The present study tries to see whether the subsidy given to CSTC, which is the oldest and the largest state transport corporation operating in and around Kolkata, is really being used to cover the losses they make over the years or to merely cover-up an inefficient performance. The state owned buses are required to serve, not only non-profitable routes in off-peak hours, but also to give social security or employment to a large section of society. The burden of carrying a huge staff structure and serving at an administered and less than competitive price for welfare reasons, makes CSTC liable to an operating loss. Therefore, it makes a case for subsidy. However, the regular commuters experience regarding the condition of and the services provided by these raises a question about the justification of subsidy. In the study it is seen that the subsidy given is not based on any of the components on which it should, economically.     

船舶涂装冲砂派工精细化研究

精细化管理是现代企业所追求的管理模式,在精细化管理下,员工个人能力得到合理安排,整体工作效率得到提升.冲砂作业是涂装作业中重要一环,其精细化派工的实现有利于涂装效率的提升.本文通过对冲砂作业进行分析,研究了不同因素对冲砂效率影响,其中着重研究了作业环境所造成工作人员不同姿势及其对效率的影响,综合分析冲砂作业在不同姿势下的作业效率,并对涂装设计提出改进建议,从而为精细化派工提供了依据.