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101.
Sustainability at Spanish ports specialized in liquid bulk: evolution in times of crisis (2010–2015)
Fernando González Laxe Federico Martín Bermúdez Isabel Novo-Corti 《Maritime Policy and Management》2019,46(4):491-507
In Spain, 28 Port Authorities of general interest moved more than 168 thousand tonnes of liquid bulk (34% of overall traffic) in 2015. Almost 82% of this amount corresponded to eight ports (G-8) that have a refinery within their facilities. This unique degree of specialization and concentration makes this set of ports an ideal sample to analyse the evolution of their sustainability levels, particularly during the crisis started in 2008 and onwards. A proprietary methodology based on Multidimensional Synthetic Indices has been used. The comparison of the findings obtained for 2010 and 2015 allows a diagnosis of the evolution of port sustainability measured through the economic, institutional, environmental and social dimensions to be established, as well as a study of the patterns of behaviour that each port has followed in this issue. 相似文献
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交通量观测站宏观布设方法 总被引:3,自引:0,他引:3
基于客观性、可靠性、实用性的原则, 应用模糊聚类分析与相关分析结合的方法对交通量观测站进行宏观布设。同时结合观测站布设应满足的规则及交通量变化临界点的选择方法, 以交通生成吸引点、交通枢纽等为依据, 确立了地区交通量观测站布设的总体思路和流程, 通过构建道路重要度指标确定观测站布设的类型。应用结果表明此方法实现了观测站布设的定量化、系统化和可操作性, 能够很好地筛选代表路段, 从而确定增减观测站的数量与位置, 且布设结果与道路系统的实际状况一致。 相似文献
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介绍了几种实用的PLCI/O点数扩展方法,运用这些扩展法可以提高I/O的利用率,实现小容量PLC控制较大或多个系统. 相似文献
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经过30多年的改革开放,广东省沿海港口已基本形成了布局合理、层次分明、与地区生产力布局高度相关的港口发展格局。当前,广东省港口正面临新的发展环境,需要对未来港口发展方向和思路进行重新梳理。针对广东沿海港口发展现状与发展环境,以国家区域发展战略实施为导向,对广东省沿海港口的长远发展进行战略思考,为相关行业部门制定战略规划提供参考。 相似文献
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At the time of writing (2010), the world is witnessing the aftermath of the most severe financial sector meltdown in modern economic history caused by the real estate bubble in the United States. Its consequences on the real economy, especially in Europe, are yet to be fathomed, and this of course includes the longer-term impacts on international ocean transportation, ports and the distribution of global production.The economic recession has left the international shipping and port sectors with substantial overcapacity. This has resulted in drastic cost cutting measures on the one hand, and voluntary, often consensual, and coordinated reduction of supply on the other. These measures, together with a noticeable recovery in demand, are gradually leading again to improvement in prices charged by carriers and other transport service providers.In view of the country’s expanse; size of population; and regional inequalities, India’s dry ports (inland cargo consolidation and distribution centres) are seen by the government as a pivot of export-led growth and economic development (Haralambides & Gujar, 2011). Moreover, public and private sectors alike see the coordinated development of dry ports as the only way forward in terms of easing pressures at congested coastal ports, thus improving supply chain efficiency. In spite of this, dry port development and operations are still dominated by the public sector, under prices, capacity, land acquisition policies and other conditions that make private sector participation risky and comparatively unattractive. In order to rationalize dry port capacity and prices, this paper argues in favour of greater devolution through competition-enhancing Public-Private Partnerships (PPPs). The paper puts forward recommendations for the necessary legal, regulatory and general economic policy interventions based on international best practice, while keeping Indian specificities in the right perspective. 相似文献
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以ARM与uC linux嵌入式系统为软硬件平台,对河道上浮标的GPS定位数据的接收和处理作了详细的论述。本系统以三星公司的s3 c44b0x微控制器为核心,GPS模块采用诺瓦泰(NOVATEL)公司生产的OEM板卡superstarⅡ,两者通过串口通讯。用C语言编写的应用程序(运行于uC linux操作系统上)接收从GPS串口发送的浮标定位信息,经过处理,可利用uC linux对TCP/IP的支持,通过无线GPRS网络发送到远端监控中心,重点实现了浮标定位信息的获取。 相似文献
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针对集装箱班轮运输中船舶燃油补给问题,分析船舶航速变化对燃油消耗产生的非线性影响,推导出船舶航速与船舶往返时间及船舶油耗之间的关系式,以连续多航次船舶燃油补给总成本最低为目标,加油港与加油量为决策变量,建立周计划内考虑航速的集装箱班轮燃油补给混合整数非线性规划模型.根据模型特点,利用分段线性逼近函数对模型进行等价转换.以某航运公司的亚欧单航线为仿真实验,依次分析港口时间窗、船舶类型、燃油价格及船舶油舱容量等因素对船舶燃油补给策略的影响.结果表明:该模型可以同时决策船舶加油港的选择、加油量的大小及航速的调整,比传统模式更能节省油耗和成本. 相似文献