基于堆场网格化的专业煤炭码头物流系统仿真模型

堆场是专业煤炭码头最重要的组成部分之一,通常采用分货种、分货主的垛位堆放策略,由于煤炭品种比较多,堆场的垛位大小和数量都处在动态的变化中。针对专业煤炭码头物流系统仿真建模中的问题,提出了堆场网格化建模方法,并结合实际专业煤炭码头进行仿真建模和试验研究。结果表明网格化建模方法可以更准确、更细化地描述码头堆场的动态变化过程。     

干散货码头堆场垛位随机动态过程与细化网格模型

堆场的垛位管理是干散货码头的重要问题。基于随机服务理论,对堆场垛位的动态变化进行了深入研究,分析了垛位动态变化的机理,将连续空间的堆场进行了网格化逼近,建立了堆场垛位动态变化的数学模型。在此基础上,建立了描述堆场垛位动态变化的煤炭码头物流系统细化仿真模型,并结合实际专业煤炭码头的仿真试验,验证了模型的精确性和适用性。     

出口型煤炭码头封闭式堆场通过能力研究

针对出口型煤炭码头封闭式堆场在设计通过能力时存在的问题,基于离散事件动态系统理论,建立该类型码头物流系统的概念模型,并进一步建立系统的仿真模型,通过仿真试验研究堆场筒仓数量和容量与码头通过能力的关系.模型经过实际检验,具有重要的工程应用价值.     

煤炭装船码头堆场通过能力优化

针对沿海煤炭出口码头到港煤炭种类和堆存位置多样、堆场作业情况复杂、配煤工艺流程繁杂等对码头堆场布置方案和煤种堆存分布管理带来的巨大挑战，以黄骅港煤炭码头一期工程为例，对煤炭码头堆场通过能力进行优化研究。在不改变工艺布置方案的条件下，通过分析现场实际运营数据、优化流程选择、调整垛位大小和堆存煤种布局，利用计算机仿真手段对各方案进行测算，得到最优堆场通过能力方案。结果表明，在传统装卸工艺方案设计和技术手段无法实现的情况下，利用仿真手段将运营管理、运营策略等因素融合到方案设计中，可为煤炭装船码头堆场布置方案提供理论参考和数据支撑，也为煤炭码头智能化建设提供支持。     

面向堆场网格化的件杂货码头生产物流仿真模型研究

件杂货码头生产物流中不确定性因素非常多,是一个复杂系统。码头通过能力的准确分析一直是一个工程技术难题。本文深入分析了件杂货码头生产物流的复杂性特征,提出网格化堆场的管理策略,运用系统仿真技术建立了件杂货码头仿真模型,并结合码头实际案例进行了仿真研究,得出了有工程价值的结论,为件杂货码头的规划设计和运营管理提供了合适的分析方法。     

火车集港策略对煤炭出口码头运营效益影响研究

为定量研究火车集港策略对码头运营的经济效益和安全效益的影响,在分析应用筒仓储煤工艺的出口型煤炭码头作业系统的基本组成及装卸工艺流程的基础上,基于计算机仿真技术,建立出口型煤炭码头封闭式筒仓堆场作业系统的仿真模型,仿真不同集港提前期下出口型煤炭码头运营情况。仿真结果表明,火车集港提前期的缩短有利于提高安全效益。     

基于Flexterm软件的集装箱码头自动化堆场箱位分配策略对比

为了分析集装箱码头自动化堆场的箱位分配策略对于码头运行的影响,采用计算机仿真方法,结合工程实例进行研究。总结学术研究及生产实际中常见的自动化堆场箱位分配策略;基于Flexterm仿真平台,分别对秘鲁某集装箱码头及希腊某集装箱码头构建系统仿真模型,模拟不同箱位分配策略下的集装箱码头自动化堆场和岸边生产作业过程;通过仿真试验统计主要设备作业效率及状态占比。结果表明,不同箱位分配策略对集装箱码头运行的影响并没有一致规律,应根据研究项目的实际情况和研究目标合理选择箱位分配策略。     

自动化集装箱码头装卸工艺方案的建模仿真研究

本文通过仿真软件Flex Term平台,以青岛自动化集装箱码头为研究对象,建立了仿真建模,得出了仿真统计数据及分析结论。并以岸边集装箱装卸桥、LAGV、堆场条数为主要研究对象进行了仿真实验,从码头通过能力、设备利用率、设备等待时间、堆场堆存量、排队长度等多个技术指标评估并优化装卸工艺系统布置方案。     

煤码头装卸系统仿真优化研究

为了提高装卸效率,台州发电厂煤炭专用码头对煤炭装卸工艺进行革新,建立仿真优化模型。介绍台州发电厂仿真优化的基本原理和煤炭装卸仿真系统的设计。着重介绍电厂煤码头装卸工艺系统优化的方法。此方案将有效提高煤炭装卸作业效率和码头营运效率。     

北方某港煤炭码头堆场洒水抑尘系统的设计

喷洒水是煤炭码头堆场中简单、有效的抑尘措施之一,结合北方某港煤炭码头堆场喷洒抑尘给水系统的设计实例,重点介绍喷枪站布设方式的比选、喷枪选型原则、喷枪工作时间的计算、喷洒水系统的管道布置和系统控制等,提出工程设计中应注意的问题,可供同类干散货堆场洒水抑尘系统的设计参考.     

Errata

正In the paper"Influence of Fouling Assemblage on the Corrosion Behaviour of Mild Steel in the Coastal Waters of The Gulf of Mannar,India"in Vol.12,No.4,Page:509,References were lost,and the two authors’biographies were identical.The correct text is shown below.We apologize to the authors and our readers for any inconvenience caused by the errors.     

Journal of Marine Science and Application 2014 Sum. Contents

正~~     

第34届海洋、离岸及极地工程国际会议(英文)

正St.John's,Newfoundland,Canada,May 31-June 5,2015 OMAE2015 is the ideal forum for researchers,engineers,managers,technicians and students from the scientific and industrial communities from around the world to: meet and present advances in technology and its scientific support;     

联合作战计划和执行系统

全球指挥控制系统(GCCS)实施当前美国海军网络中心战信息基础设施的联合计划网络。联合作战计划和执行系统(JOPES)支持GCCS实现联合计划。JOPES有两类计划：时间不限的精密预案计划生成作战计划、方案计划或职能计划；时间敏感的危机行动计划生成作战命令或战役方案。前者在和平时期创建的作战计划是后者的计划基础，加速应付危机的能力。     

Eastbound or westbound ?

In terms of equal sailing distances, where is the inflexion when ships depart from ports in the Asian Continent to New York via Suez and/or Panama？
The answer is China South Port Group （Hong Kong, Shenzhen and Guangzhou）.     

Recent progress on wave induced loading measurements in warships

Recent measurements of wave induced hull strain and flexure in RN warships are presented together with the derivation of the current design criteria for extreme hull girder bending loads. The history of the development of the shipboard instrumentation used is given and recent developments to improve the quality and ease of analysis of the data are described. An unexpectedly high transverse asymmetry in the longitudinal strains measured in destroyers is shown to be the result of a combination of vertical and lateral bending in oblique seas. Finally recent theoretical comparisons between the loading of Deep-Vee hulls and conventional UK rounded bilge hulls are presented which demonstrate the higher loading experienced by this type of hull form.     

桥梁防撞设施物理模型试验

物理模型试验是预报防撞设施所受撞击力及优化设计方案的主要方法之一。结合杭州湾大桥柔性防撞设施及东海大桥独立式防撞体设计方案,阐述了船—防撞体撞击试验的基本原理、方法、试验方案及相关试验结果。提出了柔性防撞系统的优化方案。试验结果表明,该方案经济有效,可供预报类似桥梁防撞设施撞击力时参考。     

印尼某电厂码头水工建筑物设计

印尼某电厂项目码头水工建筑物包括码头、防波堤和护岸等主要组成部分。在该项目水工建筑物的设计过程中,综合考虑当地的自然条件、施工能力和材料来源等因素,不断优化结构选型和结构断面。根据不同使用要求,护岸分别采用直立式和斜坡式2种结构型式,推荐的设计方案节省投资、施工方便,可供同类工程设计参考。     

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.     

开放式数据挖掘系统模型

目前国内已经出现了少量的数据挖掘相关产品。国内数据挖掘软件无论从数量还是质量上比较，都与国外软件存在着较大的差距。随着数据仓库技术的普及，数据挖掘应用的需求越来越强烈，如何缩短这种差距，研发数据挖掘软件产品成为国内业界的一个重要问题。通过引用目前国际通用数据挖掘标准技术来构建开放式的数据挖掘系统模型，该系统模型从可扩展性、可重用性、易用性等方面得到了加强。