基于SAPSO-BP网络模型的港口潮汐实时预报

为了提高港口码头潮汐预报的精度,提出一种自适应变异的粒子群优化算法SAPSO,将SAPSO优化算法与BP神经网络结合,用以潮汐水位的实时预报。SAPSO-BP网络模型运用自适应变异的PSO算法优化BP神经网络的网络参数,克服了传统BP神经网络所具有的对初始权值阈值敏感、容易陷入局部极小值的缺点,最后选用Isabel港口的实测潮汐值数据进行潮汐水位的实时预报仿真试验,用以验证SAPSO-BP预测模型的实用性和可靠性。     

长江口12.5 m深水航道运行5年沪苏两地的效益响应

选择上海市及江苏省2个地区作为长江口深水航道受益对象,从宏观经济效益和社会效益2个层面分析评价长江口12.5 m深水航道运行5年沪苏两地的效益响应。结果表明,沪苏两地沿江港口的疏浚吞吐比整体有所下降,近5年降幅分别近15%和25%,2015年已分别减小至949 m~3/万t和327 m~3/万t。2011—2015年,沪苏两地因12.5 m航道产生的疏浚单方GDP增长量分别为目前国内疏浚成本单价的15~20倍和40~60倍,疏浚净效益相当可观。随着12.5 m深水航道江苏段的投入运行和沿江港口码头的改造升级,长江口深水航道的疏浚效益还将进一步增加。     

Port choice in container market: a literature review

As a result of the intense changes occurring in port environment over the last decades, new models of competitiveness have been developed, where port authorities try to increase their attractiveness. In this context, one of the most debated issues in this area of research is still the role played by port authorities in defining port competitiveness. The aim of this paper is to provide a review of port choice literature enabling to identify the main port choice’s criteria in order to define the role played by Port Authorities and to point out future lines of research that should be undertaken to fully incorporate current ports’ environment and performance. The results show that although some studies point out the importance of geographical factors in port choice, a larger number of studies defend the increasing role played by port authorities in determining the competitiveness through investing in port infrastructure, improving port efficiency or hinterland accessibility. Despite the existing models contributing on this topic, there are still some gaps in terms of measuring the port performance, including port strategies and studying the port choice for specific industries.     

Strategic beliefs of port authorities

Over the last decade, insights from the strategic management discipline have increasingly been applied to ports. A review of literature shows that in the analysis of port authority strategy, mainly outside-in approaches are applied. This paper adds to the emerging understanding of the port authority’s strategy by applying a cognitive perspective. Specifically, the strategic cognition of firms’ executives is one of the explanatory variables behind firms’ strategic decisions. Furthermore, cognitions are influenced by the organisational contexts in which port authority executives have worked. As a result, managerial “mental maps’ may vary across industry contexts and over time. This research investigates the strategic cognition of a global set of port authority executives through a survey-based instrument. The results show that, to a large extent, PAs resemble “regular” for-profit companies, but that they possess some specific beliefs that distinguish them from “regular” companies.     

汉班托塔港规划建设的认识和思考

港口规划是基于建设条件、建设现状和对未来的发展预测等提出的指导和控制港口发展建设的纲领性文件.本文根据汉班托塔港的规划建设情况,结合港口发展的优劣条件,对汉班托塔港规划建设中面临的问题作出思考.     

港口节能降耗新技术研究与实践

国民经济快速增长与资源瓶颈矛盾日益突出。建设资源节约型、环境友好型社会已经成为国家重要发展战略之一。上港集团利用各种先进的节能降耗技术,结合有效的管理,持续不断的开展节能创新工作,优化作业流程,提高作业效率,降低运营成本。本文详细介绍上海港节能降耗的新技术研究与实践,包括:RTG油改电,混合动力RTG,RTG轮胎翻新、门机变频改造,及高杆节能灯。     

港航物流企业信息系统体系结构的研究

随着港航物流企业信息系统研究的不断深入,企业信息系统的建设也就显得越来越重要。在分析国内外港航物流企业信息系统基础上,提出港航物流企业信息系统设计目标,最后采用BPS的思想来构建港航物流企业管理信息系统的体系结构。     

集装箱港口建设项目环境影响经济评价研究

为了对集装箱港口建设项目环境影响进行经济评价,首先给出集装箱港口建设项目对大气环境、水环境、声环境、土壤环境以及生态环境的环境影响因子及其对环境和社会的影响,并分析港口建设项目环境影响经济评价方法,然后运用费用效益分析方法对环境影响因子进行经济评价。     

构建以港口为枢纽的综合交通运输体系

明确了构建以港口为枢纽的综合交通运输体系在推动现代港口建设、促进经济发展等方面的重要作用;分析了新形势下,构建港口综合交通运输体系将面临集疏运系统建设、港城协调发展、港口资源合理配置等3方面的挑战;并结合我国实际情况,给出了在管理体制、规划制度、行业标准、港城发展、现代物流、经营机制等6方面的政策建议。     

港口代际的本质特征及其演化规律

以代际的概念描述港口功能的转变,体现了港口发展的历史进程,也反映出在生产力发展不同阶段中港口所具有的作用。深刻理解港口不同代际的内涵,把握港口未来的发展趋势,对于港口规划、建设和经营具有重要的现实意义。针对不同港口代际的本质特征及其演化规律进行重点剖析,并从横向扩展和纵向延伸两个方面对港口功能的转变进行研究,供决策者制定港口发展规划时参考。