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Liner ship route schedule design with sea contingency time and port time uncertainty

机译:具有海上应急时间和港口时间不确定性的班轮航线规划设计

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This paper deals with a tactical-level liner ship route schedule design problem which aims to determine the arrival time of a ship at each portcall on a ship route and the sailing speed function on each voyage leg by taking into account time uncertainties at sea and at port. It first derives the optimality condition for the sailing speed function with sea contingency and subsequently demonstrates the convexity of the bunker consumption function. A mixed-integer non-linear stochastic programming model is developed for the proposed liner ship route schedule design problem by minimizing the ship cost and expected bunker cost while maintaining a required transit time service level. In view of the special structure of the model, an exact cutting-plane based solution algorithm is proposed. Numerical experiments on real data provided by a global liner shipping company demonstrate that the proposed algorithm can efficiently solve real-case problems.
机译:本文探讨了战术层面的班轮航线规划设计问题,该问题旨在通过考虑海上和海上时间的不确定性来确定船舶在航线上每个港口的到达时间以及每个航段的航行速度函数。港口。它首先导出具有海意外事件的航行速度函数的最优条件,然后证明燃油消耗函数的凸性。针对拟议的班轮航线规划设计问题,通过在保持所需的渡越时间服务水平的同时将船舶成本和预期的燃油成本降至最低,开发了一种混合整数非线性随机规划模型。针对模型的特殊结构,提出了一种基于精确割平面的求解算法。一家全球班轮运输公司提供的真实数据的数值实验表明,该算法可以有效解决实际问题。

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