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Operational planning models for distribution networks

机译：分销网络的运营计划模型

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摘要

The design and optimisation of a logistic network deals with a wide set of decisions, e.g. the determination of the best location and capacity of the different logistic facilities (production plants, distribution centres, transit points, wholesalers, etc.), the allocation of the product demand coming from customers in presence (or absence) of fractionable flows of material, the determination of the best transportation mode (truck, rail, etc.) as well as loading and routing of vehicles. These decisions involve multiple stages of a distribution network: customers-regional distribution centres (RDC), RDCs-central distribution centres (CDC) and CDCs-production plants and sources, in presence of multiple products and the variable time (i.e. time-dependent product demand and flows of material). This paper presents a top-down methodology that joins the strategic planning, the tactical planning and the operational planning of distribution networks with a special focus on the development of effective heuristic methods to face the vehicle routing problem. Original models and heuristic algorithms for the operational planning are illustrated. The impact of the strategic and tactical decisions on the performance of the operational planning is evaluated by the application of the proposed hierarchical approach to two realistic case studies. Obtained results are illustrated in a what-if experimental analysis conducted on multiple problem settings and realistic scenarios.
机译：物流网络的设计和优化处理各种各样的决策，例如确定不同物流设施（生产工厂，配送中心，中转站，批发商等）的最佳位置和容量，在存在（或不存在）零散物料流的情况下，来自客户的产品需求分配，确定最佳运输方式（卡车，铁路等）以及车辆的装载和路线选择。这些决策涉及分销网络的多个阶段：存在多个产品和时间可变（即与时间相关的产品）的客户区域分销中心（RDC），RDC-中央分销中心（CDC）和CDC生产工厂和来源需求和物质流）。本文提出了一种自上而下的方法，该方法结合了配电网络的战略规划，战术规划和运营规划，特别侧重于开发有效的启发式方法来应对车辆路径问题。说明了用于运营计划的原始模型和启发式算法。通过将拟议的分层方法应用于两个实际案例研究，评估了战略和战术决策对运营计划绩效的影响。在多个问题设置和实际情况下进行的假设假设分析中说明了获得的结果。

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