Determination of Critical Slip Surface of Soil Slope

A new complex method is presented considering not only the improvement upon the ＂bad ＂design point, but also the diversity of the newly generated complex, which is obtained by replacing the ＂bad ＂design point with the better design point located at the line between the ＂bad ＂design point and the ceotroid of the remaining design points of the old complex. The new complex method is applied to searching for the critical slip surface of two non-homogeneous soil slopes. The comparison of the results obtained by the new complex method with that by the basic complex method shows that the new complex method is much more likely to find the true critical surface for the randomly generated initial complex.     

ICE(R)系列新动车用 COBRA诊断系统--对车务人员和维修的创新支持

ICE 系列新动车ICE3、ICET、ICE TD采用了层级结构的诊断系统COBRA(Central On Board RailwayAssistant车载辅助中心),有各装置的自诊断和动车有关的上一级诊断.COBRA诊断系统有清晰的目标群取向,总是只向车务人员和维修人员提供重要的信息和可能的补救措施.在列车进段之前就对自动释放和经无线传输的诊断数据做了计算.列车一进段就准备好了维修人员和维修材料,例如更换损坏件和磨耗件,在进行清洁作业的同时为列车下一次运行准备好了良好的状态.     

铁路碎石道碴清洗工艺及设备的研究

文章介绍了道碴清洗工艺及设备的研究,以白皎石场和桐子林采石场为例,说明道碴清洗工艺及设备的设计原则、碴场总体布置、工艺过程的环保和节能经验,经检验生产的道碴能满足客运专线用碴需要。     

Maritime liner shipping and the stevedoring industry: market structure and competition strategies

Globalization, liberalization, competition and spatial interaction are significant factors affecting the transformation of manufacturing industries worldwide. In the transportation and logistics industry, however, cooperation is becoming even more critical than competition in determining firms' efficiency. Cooperation has always characterized the liner sector in which strategic alliances, mergers and acquisitions have generated twin effects: notable increases in ship size and falls in freight rates. Meanwhile, the stevedoring industry is undergoing privatization-driven consolidation and the emergence of global pure terminal operators. This article focuses on vertical integration between global carriers and terminal operators. We address the following key current issues:

• dedicated terminals as a strategy for cutting costs and controlling integrated transport chains;
• the struggle for supply chain control, involving global carriers versus global terminal operators, driven by financial power and technical and managerial capability.

We close analysing one of the core problems of the market, namely the evolving role of the dedicated terminals. For the pure stevedores they represent an opportunity to secure a cargo, while in the hands of the liners they enable cost stability and the possibility to put pressure on pure terminal operators.     

A study of passenger discomfort measures at the Hong Kong mass transit railway system

This note investigates the important attributes relating to the crowding effects at the Mass Transit Railway (MTR) stations in Hong Kong. Data was collected at two sets of three MTR stations to study the responses of the passengers due to the discomfort at crowded vehicles and platforms. Stated preference surveys were used to study the effects of passenger discomfort measures.     

论人才队伍建设与企业跨越式发展

本文结合中国铁路工程总公司人力资源管理工作实践 ,论述了建设高素质人才队伍和学习型机制在企业发展中的重要作用 ,指出了高素质的企业家、高水平的专家、高技能的技师和高效率的政工干部等四支人才队伍培养的核心和重点 ,并分析了人力资源管理创新中的几个关键问题     

浅谈超大型集装箱船舶的操纵体会及注意事项

以超大型集装箱船为例，分析了该类型船的性能及操纵特点，探讨了大型集装箱船舶的操纵方法。结合航行实践及驾驶经验，提出了最佳驾驶操纵方法和在紧急情况下防止事故发生的注意事项。     

The association of the population recruitment of gulf menhaden, Brevoortia patronus, with Mississippi River discharge

Gulf menhaden, Brevoortia patronus, which constitutes a major industrial reduction fishery in the USA, spawn across the northern Gulf of Mexico with a focus of spawning about the Mississippi Delta. This species is estuarine dependent; adults spawn over the continental shelf and their larvae are transported, by mechanisms that are presently not well understood, to estuarine nursery areas. Larval gulf menhaden, along with some other surface oriented larval fishes, appear to aggregate along the Mississippi River plume front, while evidence of the ecological consequences of this aggregation in terms of the feeding, growth, and survival of larvae is ambiguous. On an annual scale, Mississippi River discharge is negatively associated with numbers of half year old recruits. Discharge of the Mississippi River and the population recruitment of gulf menhaden may be plausibly linked through the action of the river's plume and its front on the shoreward transport of larvae. Greater river discharge results in an expansive plume that might project larvae farther offshore and prolong the shoreward transport of larvae. An indirect, decadal scale, positive response of recruitment and river discharge is possible, but not certain. Recruitment became elevated after 1975 when river discharge increased and became highly variable. This response might owe to enhanced primary and secondary production driven by nutrient influx from the Mississippi River.     

Development of Green-Naghdi models with a wave-absorbing beach for nonlinear, irregular wave propagation

Two-dimensional and three-dimensional Green-Naghdi (GN) models equipped with a numerical wave-absorbing beach have been developed to simulate nonlinear, regular, and irregular wave propagation. The numerical beach is introduced near the downstream boundary to absorb outgoing waves. An appropriate amount of numerical damping and an appropriate length of numerical beach are investigated using numerical experiments. The results show that the GN models with a numerical beach work very well in simulating wave propagation in water in a small computational domain.     

Manpower and employment issues

Overmanning and restrictive labour practices are major causes of low productivity in Indian ports. Proposals are put forward for a programme of reforms to support investment in modern cargo handling systems.