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The Container Shipping Network Design under Changing Demand and Freight Rates

机译：需求和运费变化下的集装箱运输网络设计

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This paper studies the optimization of container shipping network structures and its operations under changing cargo demand and freight rates.Most existing studies that use a given matrix of average demand have not been able to deal with practical issues such as empty container repositioning,ship-slot allocating,ship sizing,and container configuration.In this paper,these issues are simultaneously considered based on a series of matrices of demand in a year. The problem is formulated as a mixed integer non-linear programming problem (MINP) with an objective of maximizing the average unit ship-slot profit in three stages by using analytical methodology. A genetiC algorithm based on heuristic is utilized to arrive at solutions. Through empirical experiments and comparisons,results show that the proposed model can provide a more realistic solution to the issues on the basis of changing demand and freight rates;the model provides a more effective approach to the optimization of container shipping network structures and operations than does a model based on average demand.
机译：本文研究了在不断变化的货运需求和货运费率下的集装箱运输网络结构及其运作的优化。大多数现有研究都使用给定的平均需求矩阵来处理空集装箱重新定位，船位等实际问题。在本文中，这些问题是根据一年中的一系列需求矩阵同时考虑的。该问题被表述为混合整数非线性规划问题（MINP），目的是通过使用分析方法，在三个阶段中最大化平均单位船位利润。利用基于启发式的遗传算法得出解。通过实证实验和比较，结果表明，所提出的模型可以在需求和运费变化的基础上为问题提供更现实的解决方案；该模型为集装箱运输网络结构和运营的优化提供了更有效的方法。基于平均需求的模型。

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