The development of ro/ro services in Marseilles: Part 1

This paper discusses the growth of ro-ro services operating to and from Marseilles and the adaption of port structures to facilitate this growth. The concluding section of Part 1 of the paper analyses throughput performance.     

汽车滚装码头设计特点

结合上海港外高桥港区六期汽车滚装码头设计,就汽车滚装码头面高程确定、装卸工艺布置模式、堆场排水设计及港区照明防雷设计的相关特点进行论述,说明汽车滚装码头设计有其自身的特点,其设计要求与其他货种码头的要求不同,需要根据各个港区的实际情况区别对待。     

16 000总吨客滚船的研究和设计

本文介绍了客滚船总布置的特点,分舱和破舱稳性计算以及结构设计、救生设备配置以及货舱通风情况。     

现代滚装汽车码头设计

随着汽车业和汽车物流的快速发展,需要有现代化的滚装汽车码头为汽车物流提供更高效的服务,而外六期滚装汽车码头正是目前国内最为现代化、功能最齐全的滚装汽车码头。介绍了外六期滚装汽车码头的功能设计、码头高程的计算及港区平面布置,还从平面、功能、规模及结构等方面对多层停车场、VPC、PDI、整车分拨中心及汽车零部件中心的设计思路进行了描述。     

环渤海地区客货滚装运输现状分析与展望

介绍环渤海地区客货滚装运输发展历程,论述客货滚装运输码头泊位、航线、运输企业等情况和客货滚装运输量现状,并分析其发展特点及存在的问题,结合区域经济发展规划,对发展前景进行了展望,并提出渤海湾客货滚装运输发展的意见与建议。     

基于故障树分析技术的客滚运输安全性评价

根据对渤海湾客滚运输事故原因的统计分析,建立了基于故障树分析技术的客滚运输航行风险分析模型。利用Semanderes算法求出故障树的最小割集,对客滚运输安全进行定性分析。基于容斥定理设计了顶事件概率的求解算法,计算出了各底事件的概率重要度和关键重要度,进而对客滚运输安全进行定量分析。通过综合分析得出影响客滚运输安全的重要因素。     

芜湖奇瑞公司商品汽车滚装码头工程设计

针对商品滚装船船型多样及水位差大等特点,在芜湖奇瑞公司商品汽车滚装码头工程设计中提出一种新型商品汽车滚装码头型式,对内河大水位差滚装码头的建设有一定的参考价值.     

Effect of transportation infrastructure on economic growth in India: The VECM approach

This paper examines the effect of transportation (road and rail) infrastructure on economic growth in India over the period 1970–2010. Using Vector Error Correction Model (VECM), the paper finds bidirectional causality between road transportation and economic growth. It also finds bidirectional causality between road transportation and capital formation, bidirectional causality between gross domestic capital formation and economic growth, unidirectional causality from rail transportation to economic growth and unidirectional causality from rail transportation to gross capital formation. The paper suggests that expansion of transport infrastructure (both road and rail) along with gross capital formation will lead to substantial growth of the Indian economy. Therefore, within its stated scope, this study suggests that a suitable transport policy should be retained to boost transportation infrastructure and hence sustainable economic growth in India.     

某型信息化弹药弹上电子元器件可靠性增长分析

分析了针对某型信息化弹药弹上电子产品的可靠性增长试验判别公式,提出了可靠性增长试验中薄弱环节与失效的控制措施,对可靠性改进过程进行了分析,为设计人员工程决策提供了技术支撑。并认为在该型信息化弹药研制过程中,对弹上电子元器件应用6σ理论和技术,将使得质量和成本、管理和技术协调一致,从而推进弹上电子元器件的可靠性增长。     

公路区域OD数据库更新技术探讨

为有效提高公路区域OD数据拟合效果和资料使用率,在合理简化交通分区间OD变化关系的基础上,将公路区域OD按自然增长OD量、局部路网变化引起的OD调整、区域出现新经济增长点引起的新增OD3种类型,研究其维护更新方法。     

改进的统一疲劳裂纹扩展速率预报模型对合金在常幅载荷下普遍适用性的研究

精确预报金属结构的疲劳对确保结构安全及指导结构设计与维修具有重要的意义.作者们基于McEvily模型提出了一个改进的统一疲劳裂纹扩展速率模型,其将疲劳裂纹扩展的三个扩展区域统一起来,并能解释更多的疲劳试验现象.文中对该模型进行了详细阐述,同时对模型参数的工程预报方法进行了讨论.为了进一步检验本模型的可靠性,还对不同载荷比下各种材料疲劳裂纹扩展率的预报结果与实验结果进行了对比,对比结果证明了该模型的准确性及其在常幅载荷下对不同材料的普遍适用性.     

改进的疲劳裂纹扩展率模型及其参数估算方法

疲劳裂纹扩展率曲线是任何基于裂纹扩展理论的疲劳寿命预报方法的基本疲劳特性。论文作者们提出了一种改进的疲劳裂纹扩展率模型,它可以解释金属疲劳试验中观察到的各种现象。为了便于工程应用,文中也给出了如何利用除裂纹扩展试验以外的其它试验结果来估算该模型参数的方法。文中还对恒幅载荷下该模型及其参数估算方法对HTS-A钢的适用性进行了分析,分析结果将为利用该模型预报由HTS-A型钢制成的海洋结构物的疲劳寿命提供基础。     

Growing patronage - Challenges and what has been found to work

This paper synthesizes evidence on growing public transport patronage. The paper firstly examines barriers to patronage growth before reviewing evidence on endogenous factors (those within the control of operators and regulators) and exogenous factors (those factors such as socio-economic influences which are not controlled by regulators/operators) which affect public transport patronage. Suggested barriers include capacity, network transfers, perceptions and investment/subsidy needs. Evidence is presented suggesting that reliability, service levels and fares are the principal tools to adopt in growing patronage. Car ownership, income and population growth, employment and urban sprawl are amongst the exogenous factors identified as influencing patronage.     

钛合金疲劳裂纹扩展速率试验及预报方法

本文针对深海载人潜水器耐压壳用钛合金,开展疲劳性能试验研究,得到该类型钛合金的室温断裂韧性,载荷比R=0.1下的疲劳裂纹扩展门槛值及疲劳裂纹扩展速率,基于选用的疲劳裂纹扩展预报模型,对载荷比R=0.1下的钛合金疲劳裂纹扩展行为进行了预报研究。结果表明:在载荷比不变的前提下,应力强度因子范围是疲劳裂纹扩展速率的主要影响因素,应力强度因子范围的增加会导致疲劳裂纹扩展速率增加;考虑小裂纹效应的疲劳裂纹扩展预报模型可对钛合金的疲劳裂纹扩展行为进行准确预报。     

考虑裂纹扩展的周向裂纹损伤圆柱壳的极限强度

为了正确评价和预测大型海洋平台结构在疲劳裂纹损伤条件下的承载能力,须要全面、系统地研究圆柱壳这类基本构件在考虑裂纹扩展条件下的极限强度。针对含周向壁穿裂纹损伤的圆柱壳,利用已有的关于弹塑性裂纹及裂纹扩展的理论解析解,通过系列计算,探讨了裂纹初始长度、圆柱壳直径板厚比、材料的临界CTOD、临界CTOA、屈服应力及杨氏模量等参数对极限强度的影响,并就其对各参数的敏感度作了相应的分析。提出极限强度损失系数κ、强度冗余系数λ及裂纹剩余扩展长度ξ等无因次参数,并以此定量地评价由裂纹扩展所引起的结构承载能力的变化。这项研究为进一步合理地评估含裂纹损伤的结构系统整体的极限强度完成了一项基础性工作。     

关于软件产品的软件可靠性增长模型的改进及可靠性

提出改进的关于软件产品的软件可靠性增长模型.分析了关于软件产品的可靠性增长原模型的特性,指出了原模型的假设与实际情况不相符的方面;在充分考虑补丁对销售后的软件产品的作用下,将Littlewood对软件模型的思想-即在测试初期出现的错误对软件失效的影响大于后期出现的错误对软件失效率的影响-引入到原模型,并提出了改进的关于软件产品的软件可靠性增长模型.针对所提出的模型,利用测量的数据进行了实际仿真.     

Determinants and consequences of rapid growth in the Brazilian shipbuilding industry

In this paper a qualitative approach is taken to assess the influence of certain factors upon the direction of economic growth and the levels of technological development achieved by the Brazilian shipbuilding industry since 1958. Its shows that technological maturation can be a lengthy, uneven and costly process. Absolute and significant growth was achieved whereas only a heterogeneous technological base has been developed. It is suggested that three interrelated factors, all evolving dynamically through the years, have influenced this apparently contradictory state of affairs: the mode of State support, the growth and technological strategies of individual firms, and the product of the technology transfer process.     

The evolution of containerization in East Asia

This paper examines the development and growth of container traffic in the Asia-Pacific region. It is hypothesised that containerization is losing its national character as the geography of container transport changes port hierarchies where only a few ports have become locationally favorable. The organizatioon of the paper is straightforward. First, the development and growth of container traffic in the Asia-Pacific region is examined in order to provide understanding of changes associated with containerization. Second, the role of selected Asian-Pacific ports as key economic players is reviewed, and container development in each port is analysed so as to measure the differences explaining the position of Asian-Pacific ports in the maritime system. Third, the degree of concentration and competition that exist among the container ports of the region is analysed with a view to evaluate what rate of expansion can be expected in the foreseeable future that will shape the network of the container market in the region. The paper concludes on a possible research agenda.     

船舶绿色制造势在必行

实施绿色造船是确保船舶工业可持续发展的重要途径。探讨了实施船舶绿色制造的必要性、紧迫性和可行性,提出了目前实施船舶绿色制造面临的主要问题和解决途径。     

广义疲劳裂纹扩展模型在单一过载疲劳问题中的应用

对于复杂载荷作用下的船舶及海洋工程结构物,至今仍没有一个统一的疲劳寿命预报模型能够很好地解释载荷次序效应的影响.单峰过载下的疲劳裂纹扩展问题是研究变幅载荷疲劳问题的基础,伴随单峰过载将出现疲劳裂纹扩展迟滞现象.课题组所提出的广义疲劳裂纹扩展模型能够定量地预报出过载迟滞这一现象,通过确定过载参数β的大小,能够有效地衡量出过载迟滞的程度.在此基础上,文章将广义的疲劳裂纹扩展模型进行了进一步的修正,通过引入一个幂指数项,使得模型能够更好地反映出过载后疲劳裂纹扩展速率由迟滞的最低点逐渐恢复到过载前的水平.文中将课题组所发展的广义疲劳裂纹扩展率模型应用于实际的单峰过载疲劳问题中,并引用铝合金D16Cz的单峰过载试验数据与模型预报结果进行了比较,结果发现,经修正的广义疲劳裂纹扩展模型能够更好地反映出单峰过载后的疲劳裂纹扩展情况.