嘉宾简介：
周翔, 香港中文大学商学院决策营运与科技学系教授、系主任, 也是香港中文大学系统工程与工程管理系教授（兼职）。曾在新加坡国立大学和多伦多大学担任客座教授。拥有浙江大学电气工程学士学位和北卡罗来纳州立大学运筹学博士学位。他的主要研究兴趣是库存管理、定价、可持续运营、数据驱动的供应链优化以及运营和营销交叉。现担任Naval Research Logistics、Operations Research Letters, Service Science等知名国际期刊编委。
讲座简介：
We consider a three-tier supply chain, where a tier-0 firm (OEM) can source from two potential tier-1 suppliers and each tier-1 supplier can source from two common potential tier-2 suppliers. The OEM produces a final product for the market while each supplier produces for its downstream buyer. Either a tier-1 or a tier-2 supplier is susceptible to disruption risk. We examine the impacts of disruption risk at different supplier tiers on the total profit of both centralized and decentralized supply chains. In the presence of fixed sourcing cost, we further endogenize supplier selection of the OEM and tier-1 suppliers and study the resulting network structures. Without fixed sourcing cost, the centralized supply chain consistently yields a lower profit under an unreliable tier-1 supplier than an unreliable tier-2 supplier. This result is reversed in the decentralized supply chain if the disruption probability is high. Such insight continues to hold (1) when each tier has more than two firms and more than one unreliable firm; (2) when considering more than two supplier tiers of the OEM. With fixed sourcing cost, the centralized system is less inclined to source from an unreliable tier-1 firm than an unreliable tier-2 firm. In the decentralized supply chain, with the increase of fixed sourcing cost, the OEM’s sourcing strategy changes from dual-sourcing to single-sourcing when a tier-1 supplier is unreliable, but it can switch from single-sourcing back to dual-sourcing when a tier-2 supplier is unreliable. The findings show that competition and double marginalization in a decentralized supply chain can alter the relative impact of disruption risk at different supplier tiers on the supply chain's sourcing strategy and profitability. This underscores the importance of supply chain visibility into sub-tier suppliers' risk profiles. This is joint work with Yixin Zhu and Kevin Chen.
