我国第一艘半冷半压式LPG船下水

江南造船厂在建成我国第一艘全压式3000m~3LPG船之后,继续开发技术难度更大的液化气体船。今年10月10日,我国首制出口德国的4200m~3半冷半压式LPG船又在该厂顺利下水。     

江南造船厂开发半冷半压式LPG船

江南造船厂在建成我国第一艘3000m~3全压式LPG船的基础上,继续开发液化气体船这一高技术产品,并已接获香港Jangtse船务工程有限公司订造的2艘4200m~3半冷半压式LPG船。其中第1艘船已开工建造。这次建造4200m~3LPG船不但尺度比3000m~3大,而且是半冷半压式,其技术难度比全压式更大,除液化气装卸设备外,还设有惰性气     

全压式LPG船液货罐安装技术研究

以航通公司建造的一艘3700立方全压式LPG远洋运输船液货罐安装技术为例,分析和介绍了全压式LPG船液货罐安装的特点和需要解决的问题,在实船安装中采取环氧胶泥和层压木组合安装技术,文章介绍有关安装技术关键,并结合有关规范要求进行分析计算研究,提出合理模型。实践证明,该施工技术对类似船舶液货罐的安装具有参考价值。     

全压式LPG运输船船体设计浅析

本文简明地介绍了LPG运输船的发展前景和主要类别，并通过讲解2500-3700m^3全压式近海LPG运输船的部分重点设计问题，扼要地阐述了全压式LPG运输船船体方面的设计关键所在。     

3600m^3全压式近海LPG运输船简介

由长江船舶设计院为广州宏光海运有限公司设计的3600m^3全压式LPG运输船为常温全压式LPG专用运输船．适用于装载丙烷、正丁烷、异丁烷及其混合石油气、丁烯、丁二烯、VCM（单体氯乙烯）等LPG类石油化工产品。     

浅析LPG船舶压力释放阀的选型计算

介绍全压式LPG船舶压力释放阀的类型及其选型计算，旨在为液化气船舶的液货系统设计提供可供参考的经验。     

浅析LPG船舶压力释放阀的选型计算

本文介绍了全压式LPG船舶压力释放阀的类型及其选型计算，旨在为液化气船舶的设计提供一些可供参考的经验。     

气体运输船设计蒸气压力计算

比较了新IGC规则、旧IGC规则和USCG规则在C型独立舱设计蒸气压力计算上的差异,并以小型液化天然气运输船、液化乙烯运输船、全压式LPG船为例进行比较分析。介绍USCG的有关修改通函和ASME压力容器规范,指出以后采用C型独立舱的气体运输船从国际海域航行到美国领海,无需每个舱设置2套压力释放阀。相关结果对今后气体运输船的设计有一定的参考价值。     

LPG船冬季低温不适装问题及对策

为改善我国LPG船营运的安全监管方式,以青岛港的LPG船营运和安全监管实践为基础,说明LPG船冬季低温不适装的具体表现、认定方法以及危害性,并在分析青岛港LPG船冬季低温不适装现状的基础上,结合黄岛海事处针对其辖区LPG船低温不适装问题的具体监管措施及其存在的问题,提出对策建议。     

全压式LPG空船在N_2状态下装货时气货的计算

全压式LPG船舶在货舱充满氮气的情况下装货时,很多人把氮气当成普通LPG货物蒸气一样看待来计算货物蒸气质量,装货前计算货舱内实际氮气质量,装货后将氮气当作分子量更大的货物蒸气来计算其质量,导致实际装载货物的短少,在此推广一种假定氮气分子量的简易计算方法。     

A comparison of rail liberalisation levels across four European countries

This paper presents the results of a research into railway regulation and liberalisation in Italy, France, Germany and Spain. The analysis covers the relationship between the State and the rail companies, network access conditions by operators, slot allocating and pricing schemes and how public service obligations are defined, financed and regulated.     

航海风险识别、评估和控制

因航运业高速发展和海员职业流动性加快,导致全球高级船员紧缺,已引发高级船员提升周期缩短、航海经验不足等现象。航海事故造成人员伤亡、财产损失和污染海洋环境等已严重威胁公共安全,航海事故预防和风险控制越来越受到人们关注。船舶海上事故频发,与船员对海上风险,尤其是船员对人为因素与事故的关系的认识不足有关。通过重点介绍航海风险,提高船员对本船和自身存在的风险意识,采取相应的防范措施。     

Experimental strength analysis of steel plates with a large circular opening accounting for corrosion degradation and cracks subjected to compressive load along the short edges

This work studies the combined effect of both geometrical characteristics (opening and initial imperfections) and age related damage (corrosion and cracks) on the local and global responses of thin rectangular steel plates. A series of experimental tests has been conducted for in-service steel plates with a circular opening and subjected to several damage actions and uni-axial compression. Different initial imperfection shapes and amplitudes, corrosion degradation levels and locked crack lengths are considered. Several collapse modes were observed and the reasons for their occurrence are discussed. The experimental results of force-displacement and stress––strain relationships are presented and the relevant dissipated energies, resilience and toughness are estimated. The experimental results are compared with published experimental results, confirming the complexity of the plate behaviour accounting for different damage scenarios.     

现代工程测量技术发展浅谈

电子计算机技术、微电子技术、激光技术、空间技术等新技术的发展与应用,以及测绘科学技术的进步,为工程测量技术进步提供新的方法和手段.阐述现代工程测量仪器的发展状况,介绍与展望地面测量仪器和CPS定位等空间技术在工程测量中的应用和发展.     

RTG的发展趋势

随着大型现代集装箱码头和智能化堆场的发展 ,RTG要保持它目前在集装箱堆场的竞争力 ,就必须不断地进行改进和技术创新 ,尤其要尽快提高其智能化水平 ,进一步降低其操作成本 ,逐步的向大型化、自动化和节能化方向发展。     

Impact of regulation on the performances of long-distance transport services: A comparison of the different approaches in Sweden and Norway

Despite the many socio-economic similarities between Sweden and Norway, differences in jurisdiction, organisation, cooperation, and financing of long-distance passenger train and coach services have led to the development of four distinctively different ways of serving the markets. This paper describes how the train and coach markets have developed in the two countries, with emphasis on regulatory and industrial structure and a couple of performance variables.Looking at passenger rail, both countries separated infrastructure from operation over a decade ago. However, while Norwegian rail is characterised by an almost monopoly supplier, rail services in Sweden are partly decentralised to the responsibility of county authorities and are widely subjected to competitive tendering. The rest of the network is about to be opened up for on-the-track competition. Swedish Rail (SJ) has spent the last decades consolidating its core business (passenger rail) and sold out its other businesses. In contrast, the Norwegian state rail (NSB) has expanded its business to become a major bus operator and property owner, with extensions also into the Swedish market.The coach industry was more recently deregulated in both countries. The Swedish coach market is dominated by privately owned companies operating services to and from Stockholm. In Norway, state-owned NSB is a major coach operator on medium distance routes, and is also the largest partner of Nor-Way Bussekspress which totally dominates long-distance coach services. Further, the Norwegian coach market is characterised by cross-ownership and cooperation which has enabled an extensive route network which covers most of Norway.We find distinct differences in achievements in the two modes and in the two countries. Swedish rail services have succeeded in winning market shares and in renewing and developing both infrastructure and service levels to a greater extent than the Norwegian model. On the other hand, the Norwegian coach market seems to be more developed and efficient compared to its Swedish counterpart.The paper concludes with a discussion on the possible links between the different approaches and the performance observed, with the aim to stimulate further and more detailed research on some important issues.     

In Political Seas: Engaging with Political Ecology in the Ocean and Coastal Environment

The world’s oceans and coasts are awash in a sea of politics. The marine environment is increasingly busy, changing, and a site of degradation, marginalization, injustice, contestation and conflict over declining resources and occupied spaces at local to global scales. Themes of political ecology, such as power and politics, narratives and knowledge, scale and history, environmental justice and equity, are thus salient issues to understand in ocean and coastal governance and management. This subject review examines research on these themes of political ecology in the ocean and coastal environment and reflects on how the insights gained might be applied to governance and management. Political ecology provides important insights into: the influence of power in ocean management and governance processes; the manner in which narratives, knowledge, and scale are used to legitimize and shape policies and management efforts; the effects of historical trajectories on present circumstances, options, and practices; and the nature of inequities and environmental injustices that can occur in the marine environment. Moreover, ocean and coastal researchers, practitioners, and decision makers ought to engage with the political processes and injustices occurring in the ocean. Moving from critical insights to constructive engagements will ensure that political ecology helps to plant seeds of hope in the Anthropocene ocean.     

超宽带雷达和高功率微波武器一体化设计

介绍具有武器效应雷达的研究现状;分析超宽带雷达（UWBR）和高功率微波武器（HPMW）的组成、基本原理,总结两者的异同点;结合国内外现有技术成果,探讨UWBR和HPMW一体化设计的可行性及发展趋势;参照数字阵列雷达,构想出一种UWBR和HPMW一体化概念设计结构图。     

Maritime logistics as an emerging discipline

The evolution of maritime logistics as an emerging discipline has resulted, to a large extent, from the increasing and varied demands of shippers and customers and the rapidly changing role of ports in the context of supply and logistics chains. Scholars are becoming increasingly aware of the need to integrate logistics and supply chain management concepts in the maritime transportation chain and operations. This article aims to provide a review and foundation for understanding the domain of maritime logistics and to assess its potential as an emerging discipline. To do so, a framework for understanding the various aspects of maritime logistics strategy and implementation is developed. A synthesis of the existing knowledge on maritime logistics is done by integrating diverse explorations forming the basis of this framework. We draw upon the literature on maritime transport and ports and primarily theliterature that analyses concepts by adopting an economic or management perspective.     

大平岛围垦工程对航道、码头影响研究

基于工程海域条件分析,建立了平面二维潮流泥沙数学模型。在实测资料验证良好的基础上,对大平岛围垦工程前、后的潮流、悬沙场等进行了模拟,就工程对围区附近航道、码头的影响进行了分析研究。研究表明,本工程的实施对周边海域没有大范围的根本性影响,其影响主要集中在西侧水道的局部水域,会使处于围区西侧水道的燕山热电厂煤码头及其航道等产生淤积,建议定期疏浚或采取其它工程措施。