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The crude oil offloading and supply problem (COSP) is a type of operation maritime inventory routing (MIR) problem encountered by petroleum companies. In COSP, the company not only is responsible for the ship scheduling to carry the crude oil from production sites to discharge ports but also must maintain inventory levels at both ports (production and consumption) between safety operational bounds to avoid disruptions in its crude oil production and/or refining processes. We show how to improve significantly the decision-making process in a Brazilian petroleum company using a mixed-integer linear programming (MILP) model to represent COSP. Comparison tests with a current ship-scheduling method adopted in the company indicated that the use of the MILP model increased the transportation efficiency and reduced costs by 20% on average. In addition to the quantitative gains, the use of a MILP model to solve COSP has succeeded when encountering real-life events, such as variation in production or consumption rates, berth unavailability, and changes in the storage capacities at ports. 相似文献
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文中分析了当前我国海事司法鉴定工作存在的问题,结合海事审判特点,从建立海事司法鉴定法律体系、完善海事司法鉴定人资格审核制度、建构海事司法鉴定机构、对海事司法鉴定机构实行统一管理、完善鉴定人出庭制度等五个方面提出解决对策,以期对完善我国海事司法鉴定制度有所裨益。 相似文献
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Ocean citizenship describes a relationship between our everyday lives and the health of the coastal and marine environment. Through our everyday lives we affect, and are affected by, the marine and coastal environment in numerous ways. As such, individuals have a responsibility to make informed lifestyle choices to minimize this impact. In doing so, the actions of individuals can contribute to the amelioration of large-scale and seemingly insurmountable geographical problems. This article outlines the concept of ocean citizenship within the context of the public understanding of marine environmental issues. The article draws heavily on the experience of the National Maritime Museum as an important contributor to the development of ocean citizenship in the United Kingdom. Specifically, the Planet Ocean initiative will be examined, in which the Museum has adopted a multimodal approach to public engagement through exhibitions, educational resources, and specific research publications. The article concludes by highlighting the importance of geography in the development and sustainability of ocean citizenship. 相似文献
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文中对行政备案的定义、分类、目的、作用及主管机关的责任进行了探讨,对海事法规中的行政备案内容进行了归纳,指出了海事管理行政备案工作中存在的问题及疑惑,重点就备案的材料要求、审查原则、办理流程及签注进行了分析,提出了相应建议,以供海事立法及管理参考。 相似文献
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新罗海上力量,在隋唐东征中兴起,参与了半岛统一的历史重任,使得东北亚地缘政治平衡得以重建,扭转了历史走向。新罗海上力量经历了8世纪的首度衰落之后,恰逢东亚各国中央集权的衰落,东北亚国际海面出现前所未有的乱象。张保皋海权活动填补海上权力的空白,促进了东北亚海上丝绸之路的新繁荣。张保皋的海权活动目的是促进国际和平往来,而非称雄争霸,日本也因此获取海上便利,而唐朝宽容默许张保皋的活动。张保皋发展海权的成果最终被扼杀了,以致东北亚的海上局面出现再次失序的苗头。在新罗结束期的乱局中半岛海上力量再次以相当规模出现。 相似文献
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我国批准加入《2006年海事劳工公约》的可行性探讨 总被引:1,自引:0,他引:1
通过简述《2006年海事劳工公约》的出台背景以及目前各成员国批约的情况,联系我国实际,从政府、船员和船东三方角度,通过对国家政策、法律法规、海员保障、船东准备等方面履约的可行性分析,认为我国加入公约时机基本成熟,并提出了加入公约后可能面临的问题以及解决的建议。 相似文献
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“STCW78/10修正案”对我国航海英语教育的影响及其对策 总被引:1,自引:0,他引:1
张文才 《南通航运职业技术学院学报》2011,10(1):78-80,119
文章针对"STCW 78/10修正案"对海员有效沟通和交际能力提出的新标准,剖析了新标准对我国航海英语教育的影响,在对比分析新旧标准的基础上,探讨了新标准下航海英语教育的对策,以提高我国航海英语教育整体质量。 相似文献
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Nguyen Khoi Tran 《Research in Transportation Economics》2011,32(1):39-53
The research aims to study the port selection in liner shipping. The central work is to set up a model to deal with port choice decisions. The model solves three matters: ports on a ship’s route; the order of selected ports and loading/unloading ports for each shipment. Its objective is to minimize total cost including ship cost, port tariff, inland transport cost and inventory cost. The model has been applied in real data, with cargo flows between the USA and Northern Europe. Afterwards, two sensitive analyses are considered. The first assesses the impact of a number of port calls on the total cost which relates closely to the viability of two service patterns: multi ports and hub & spoke. The second analyzes the efficiency of large vessels in the scope of a logistics network. The overriding result of this research is to indicate the influence of logistics factors in the decision of port choice. The research emphasizes the necessity to combine different factors when dealing with this topic, or else a result can be one-sided. 相似文献
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