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南京审计大学Ning Sun、NingNeil Yu与斯坦福大学Fuhito Kojima合作的市场设计理论论文《Job Matching under Constraints（约束下的工作匹配）》即将在American Economic Review刊出。

Fuhito Kojima, Ning Sun, and Ning Neil Yu. Job Matching Under Constraints. American Economic Review, 110, no. 9 (2020).
Studying job matching in a Kelso-Crawford framework, we consider arbitrary constraints imposed on sets of doctors that a hospital can hire. We characterize all constraints that preserve the substitutes condition (for all revenue functions that satisfy the substitutes condition), a critical condition on hospitals' revenue functions for well-behaved competitive equilibria. A constraint preserves the substitutes condition if and only if it is a "generalized interval constraint," which specifies the minimum and maximum numbers of hired doctors, forces some hires, and forbids others. Additionally, "generalized polyhedral constraints" are precisely those that preserve the substitutes condition for all "group separable" revenue functions.

中文摘要：论文在经典Kelso-Crawford工作匹配框架中，考虑政府对工作单位可雇佣职工集合施加任意约束。由于替代性条件是良好市场均衡性质的关键，论文从数学上刻画了保护替代性条件的所有约束（针对所有符合该条件的收益函数）。一个约束保护替代性条件的充分必要条件是，它为“广义区间约束“，即，政府可规定职工数的最大值与最小值，且强制或禁止雇佣部分职工。此外，“广义多面体约束”恰恰可以保护“群组可分” 收益函数的替代性条件。

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孙宁：南京审计大学社会与经济研究院院长
日本筑波大学社会工学研究科经济学博士、教授、长江学者特聘教授主要研究领域：微观经济理论；拍卖机制设计；市场机制设计；博弈理论
Sun Ning and Zaifu Yang (2014): “An efficient dynamic auction for multiple complements,” Journal of Political Economy, Vol. 122, No. 2, pp.422-466.
Sun Ning and Zaifu Yang (2009): “Double-track adjustment process for discrete markets with substitutes and complements,” Econometrica, Vol.77, No.3, pp.933-952.
Sun Ning and Zaifu Yang (2006): “Equilibrium and indivisibilities: gross substitutes and complements,” Econometrica, Vol.74, No.5, pp.1385-1402.

俞宁：南京审计大学社会与经济研究院教授、执行院长
俞宁教授获得斯坦福大学经济学硕士、博士学位
Li, Shengwu and Ning Neil Yu (corresponding author). Context-Dependent Choice as Explained by Foraging Theory. Journal of Economic Theory, 175, (2018): 159-177.
Yu, Ning Neil. A One-Shot Proof of Arrow’s Impossibility Theorem. Economic Theory, 50, no. 2 (2012): 523-25.

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