Browsing by Author "Son, Joong Y."

Now showing 1 - 4 of 4
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    Effectiveness of policies for mitigating supply disruptions
    (2013) Son, Joong Y.; Orchard, Ryan
    Our paper will address the significance of supply chain risk management (SCRM) in a setting where demand is steady but supply is subject to random disruptive events. We focus on the impact that supply disruptions have on supply chain performance by proposing two policies for mitigating this impact - using strategic inventory reserves and ordering in larger lots - and assessing their effectiveness through supply chain model analysis and numerical experiments.
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    Fixed shipping cost allocation for just-in-time (JIT) lot-splitting
    (2019) Son, Joong Y.
    This paper studies benefits of just-in-time (JIT) lot-splitting and multiple shipments for an order placed by the retailer in a two-stage supply chain. In a typical order placement and delivery setting between the buyer and the vendor, the treatment of the shipping cost is not clear and is contingent on negotiations between the parties involved. The outcome of such settlement often results in suboptimal practices in the supply chain. This paper investigates how the optimal and incentive aligned allocation of the fixed shipping cost from the manufacturer to the retailer can be obtained with the lot-splitting policy. Numerical results indicate that both the lot-splitting policy parameter and the fixed cost structures (e.g., fixed shipping to ordering cost ratio) command significant impact on the shipment frequency and the supply chain cost. The paper further proposes an approach to identify settings beneficial for the system.
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    On joint effects of return policy coordination and retail competition
    (2020) Son, Joong Y.; Enstroem, Rickard
    This paper studies the effectiveness of a return policy as an incentive-aligned coordination mechanism in a decentralised supply chain for short life-cycle products. System performance with regards to profitability and product availability is assessed with a coordinated return policy between the vendor and two competing retailers. Building on the optimal return policy coordination model for short life-cycle products, this paper evaluates individual and joint effects of competition and coordination under the four different settings of competition with and without coordination, and no competition with and without coordination. Results indicate that joint effects are largely contingent on demand structures in the supply chain, whereas individually, return policy coordination displays greater effectiveness in improving fill rates at local retailers by maintaining high stocking levels and competition commands significant impact in improving the system profitability and service level by creating inventory pooling effects between competing retailers.
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    Vendor managed inventory with fixed shipping cost allocation
    (2019) Son, Joong Y.; Ghosh, Subhadip
    This paper examines the effectiveness of a vendor-managed inventory (VMI) system in a decentralised supply chain. Specifically, a two-tier supply chain with one vendor and multiple buyers is analysed under two replenishment models – an LMI system and a VMI system with vendor coordination that includes retailer incentives and cross-docking at the vendor. The impact of supply chain design parameters (number of retailers and retailer heterogeneity), and a policy parameter (shipment frequency) on the effectiveness of the VMI system is studied. Using an analytical model as well as numerical experiments, we find that incentive-aligned contractual arrangements can be made between the vendor and the retailers through reallocation of fixed shipping cost savings arising from VMI.