以一个由上游制造商和下游零售商组成的二级供应链为建模背景,在汇率风险和需求风险聚集(pooling)在下游零售商的情况下,分别建立了有无批发价激励情形下的两个动态博弈模型,获得了相应的均衡。通过分析相应的均衡,结果表明,(1)在两种情形下,零售商的汇率风险对冲行为具有稳定供应链生产行为的作用,但批发价激励能够提高零售商的汇率风险对冲比例和供应链节点企业间的交易价格;(2)与无批发价激励的情形相比,有批发价激励时的制造商利润较高,从而制造商有使用批发价激励零售商对冲汇率风险的动机;(3)在风险聚集下,"通过较低的批发价来激励零售商对冲汇率风险"这一策略能够实现供应链盈利水平与风险承担之间的权衡:需求和汇率风险增加均会使得供应链节点企业和供应链整体的盈利水平降低,同时也将降低风险聚集处的节点企业和供应链整体的利润方差。
Considering a two-echelon supply chain consisting of an upstream manufacturer and a downstream retailer where the exchange rate risk and demand risk are pooled at the downstream retailer, two dynamic game models corresponding to whether or not the retailer is stimulated to hedge the exchange rate risk via lowering the wholesale price are established, and the corresponding equilibriums are calculated. With the equilibriums, the results show that (1)the retailer's exchange rate risk-hedging stabilizes the supply chain's production regardless of the wholesale price incentive whereas the wholesale price incentive raises the retailer's hedging proportion of total purchase payment and the wholesale price itself;(2)the wholesale price incentive makes the manufacturer reap higher profit, implying that the manufacturer is willing to incentivize the retailer to hedge the exchange rate risk;(3) under risk pooling, incentivizing the retailer to hedge the exchange rate risk via a lower wholesale price is able to achieve a tradeoff between expected profit and profit variance: the increasing in the exchange rate risk and demand risk reduce the (expected) profitability for both the whole supply chain and individual node firms, and at the same time, lower the profit variance for both the whole supply chain and the node firm where the two risks are pooled.
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