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首页> 外文期刊>International Journal of Production Research >Two-period vs. multi-period model for supply chain disruption management
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Two-period vs. multi-period model for supply chain disruption management

机译：供应链中断管理的两期与多时期模型

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摘要

A novel two-period modelling approach is developed for supply chain disruption mitigation and recovery and compared with a multi-period approach. For the two-period model, planning horizon is divided into two aggregate periods: before disruption and after disruption. The corresponding mitigation and recovery decisions are: (1) primary supply and demand portfolios and production before a disruption, and (2) recovery supply, transshipment and demand portfolios and production after the disruption. In the multi-period model, a multi-period planning horizon is applied to account for a detailed timing of supplies and production. The primary and recovery portfolios are determined simultaneously and for both approaches the integrated decision-making, stochastic mixed integer programming models are developed. While the simplified two-period setting may overestimate (for best-case capacity constraints) or underestimate (for worst-case capacity constraints) the available production capacity, it can be easily applied in practice for a fast, rough-cut evaluation of disruption mitigation and recovery policy. The findings indicate that for both two- and multi-period setting, the developed multi-portfolio approach leads to computationally efficient mixed integer programming models with an embedded network flow structure resulting in a very strong linear programming relaxation.
机译：一种新型的双周期建模方法是为供应链中断缓解和恢复而开发的，与多时期方法相比。对于两期模型，规划地平线分为两个总期限：在中断之前和破坏后。相应的缓解和恢复决策是：（1）在中断之前的主要供需组合和生产，以及（2）中断后恢复供应，转运和需求组合和生产。在多时期模型中，应用多个时间计划地平线，以考虑供应和生产的详细时间。主要和恢复投资组合同时确定，并且对于两者接近综合决策，开发了随机混合整数编程模型。虽然简化的两期设置可能高估（用于最佳容量约束）或低估（用于最坏情况的容量约束）可用的生产能力，但可以在实践中轻松应用于快速，粗加的中断缓解评估和恢复政策。结果表明，对于两次和多时段设置，所发达的多个产品组合方法导致具有嵌入式网络流结构的计算上有效的混合整数编程模型，从而产生了非常强大的线性编程松弛。

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