首页 | 本学科首页   官方微博 | 高级检索  
     


A single-period analysis of a two-echelon inventory system with dependent supply uncertainty
Authors:Behdad Masih-Tehrani  Susan H. Xu  Soundar Kumara  Haijun Li
Affiliation:aDepartment of Industrial and Manufacturing Engineering, Pennsylvania State University, United States;bDepartment of Supply Chain and Information Systems, Smeal College of Business, Pennsylvania State University, United States;cDepartment of Mathematics, Washington State University, United States
Abstract:Disruptions and random supplies have been important sources of uncertainty that should be considered in the design and control of supply chains. There have been many real world examples in which a single catastrophic event has simultaneously degraded the capabilities of several suppliers leading to considerable erosion of profits and goodwill for a company. However, the literature on analytical models that account for the dependence nature of disruptions and its impact on supply chain performance is sparse.In this paper, we consider an m-manufacturer, 1-retailer, newsvendor inventory system with stochastically dependent manufacturing capacities, caused by random disruptions that may simultaneously inflict damages to the capacities of the manufacturers. We develop the structural/analytical properties of key performance measures and optimal inventory policies for the multi-source and assembly inventory systems. We show that stochastic dependence in disruptions can have opposite effects on system performance in the multi-source and assembly systems. While risk diversification is preferred in the multi-source system, risk concentration is preferred in the assembly system. Our results also suggest that, if the retailer ignores the effect of dependent disruptions, then in the multi-source structure, it would underestimate the cost, overestimate the fill rate, and order more units than the optimum; however, in the assembly structure, the opposite would happen. We perform a comprehensive numerical study to validate our analytical results and generate useful managerial and operational insights for effective risk management of supply chains in the presence of dependent supply uncertainty.
Keywords:Dependent supply disruptions   Multi-source and assembly structures   Supermodular and orthant dependence orders   Copula   Optimal inventory policy   Performance bounds
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号