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A Distribution Center Location Problem with the Integration of Upstream Transportation

机译：上游运输一体化的配送中心选址问题

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When entering an emerging market, an international company may initially focus on establishing production plants and its upstream parts/raw materials supply system, and rely on local sales agents for outbound physical distribution. However, once familiar with the business environment, the international company may consider building up its own distribution system to improve its profit margin and customer service. In this context, for a distribution system of four layers, this study examines the location problem of the distribution center, given the fixed locations of the suppliers, plants, and retailers. In particular, we consider the integration of the supplier-plant and plant-distribution center transportation in this strategic location decision problem. We develop a mixed-integer programming model and design a heuristic solution algorithm based on Lagrangian relaxation. In a numerical experiment, the solution quality is found to be close to optimality, and the computation time is acceptable in terms of strategic decision-making.
机译：进入新兴市场时，一家国际公司可能最初会专注于建立生产工厂及其上游零件/原材料供应系统，并依靠本地销售代理商进行对外物流。但是，一旦熟悉商业环境，这家国际公司可能会考虑建立自己的分销系统以提高其利润率和客户服务。在这种情况下，对于四层分销系统，本研究在给定供应商，工厂和零售商固定位置的情况下研究了分销中心的位置问题。特别是，我们在此战略性位置决策问题中考虑了供应商工厂和工厂配送中心运输的整合。我们开发了一个混合整数编程模型，并设计了基于拉格朗日松弛的启发式求解算法。在数值实验中，发现解决方案的质量接近最优，并且在战略决策方面，计算时间是可以接受的。

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