Climate change and the future Maritime Policy for the EU

A cross-cutting Maritime Policy can ensure that climate change threats and challenges in regards to seas and oceans are dealt with in a wide policy framework that takes into account the impacts that climate change may have on other sectors and vice versa.     

TSP超前地质预报系统预报误差原因浅析及对策

通过大量的TSP超前地质预报系统现场实践,分析、总结出预报误差产生的主要方面及原因,并提出相应对策和措施,有效提高超前地质预报的准确性和精度。     

走马岭隧道崩坡积体段处理技术措施

针对走马岭隧道152 m长的崩坡积体段地质特点,重点介绍采用双排超前注浆小导管联合HBC22N组合式锚杆配合工字钢钢架的支护方案及其施工方法,此方法施工方便且施工安全,工程造价相对较低。     

牵引变电所高压断路器操作机构常见故障处理

介绍了牵引变电所高压断路器操作机构常见故障的判断、处理方法,可供从事牵引变电所高压断路器检修试验人员和管理人员参考.     

电气化铁道专业常用英汉词汇汇编（25）

support for condutor rail cover 导轨罩支撑 support for soffit conductor rail with damping element 带减震装置的拱腹式导轨支撑 support frame 支架 support frame (adjustable up to 30°)     

Two-dimensional Continuum Modeling Approach to Transportation Problems

The continuum modeling approach to transportation models is now gaining much attention because of its advantages in dealing with dense-network models, macroscopic problems, and initial phase planning. This paper aims to provide a comprehensive review of the development and applications of the two-dimensional continuum modeling approach. The theoretical development and models with specific or arbitrary region configurations are first discussed, and then the applications of the continuum modeling approach to the determination of facility location, route choice, pedestrian flow, and policy and socio-economical analysis are reviewed. Finally, some prospective directions for future research are proposed.     

A study of train dwelling time at the hong kong mass transit railway system

This paper investigates the relationship between the dwelling time of trains and the crowding situations at Mass Transit Railway (MTR) stations in Hong Kong. Regression models were established for the dwelling delays of trains due to congestion at stations, and a simulation model making use of the Monte-Carlo technique is developed to assess the reliability of the estimated train dwelling time. Therefore, the distribution and the confidence interval of the train dwelling time can be predicted on the basis of observed boarding and alighting distributions.     

A note on trip matrix estimation from link traffic count data

In this note, a simple network equilibrium based approach for estimating a trip matrix using link traffic count data is proposed. In essence a combined distribution and assignment model is formulated in which the link flow data serve to furnish an estimate for the sum of the integrals of the link cost functions. A comparison of this model with others proposed previously is made.     

An approximate analytic model of supertanker lightering operations

The most economical means of transporting crude oil over long distances is through the use of very large and ultra large crude containers (VLCCs and ULCCs respectively). These ships require sea lane depths of more than 55 feet to navigate. Since no major U.S. port is deeper than 45 feet, special offloading procedures must be employed. One such procedure is lightering, the process of offloading crude oil from VLCCs to smaller vessels for final delivery to the port.A linked set of queuing models is developed in an effort to understand lightering operations better and to enhance tradeoff analyses. The model assumes that port service times, lightering vessel loading times and VLCC interarrival times are exponentially distributed, allowing us to model lightering vessel operations using a cyclic queuing model. VLCC delays are modeled using an approximate M/E_k/S queue. The two models are linked through a VLCC service time model. The sensitivity of the model to changes in key inputs as well as the likely impacts of the model's assumptions and approximations are discussed. The paper concludes with recommendations for future studies.