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运用随机占优研究风险偏好和需求不确定性对混合条件风险价值约束供应链系统的影响.证明在批发价和收益共享契约下零售商的最优订货量和利润随风险偏好系数的增加而减小;只有在零售商为风险追求型时,批发价契约才能实现供应链协调;无论零售商的风险偏好如何,收益共享契约都能实现供应链协调.在收益共享契约下,随机大需求将导致零售商获得较高的最优利润;当零售商为风险中性或风险厌恶时,其最优利润随需求可变性的增加而减少.
We use stochastic dominance to study the influence of risk preference and demand uncertainty on the supply chain system with mixed value-at-risk value constraints. It is proved that the optimal order quantity and profit of retailers under the contract of wholesale price and revenue sharing decrease with the increase of risk preference coefficient The contract of wholesale price can achieve supply chain coordination only when the retailer is the pursuit of risk, and the revenue-sharing contract can achieve supply chain coordination regardless of the retailer’s risk preference. Under the revenue-sharing contract, the randomized demand will lead to Retailers get a higher optimal profit; when the retailer is risk-neutral or risk-averse, its optimal profit decreases with the increase of demand variability.