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中文摘要：
考虑一个由2个供应商和单制造商组成的装配型供应链，分析并建立了制造商、Supply-hub和2个供应商的平均成本函数，提出了分别由制造商和2个供应商负责Supply-hub营运及成本时的生产与订货批量模型。研究结果表明：当由制造商负责时，供应商距离Supply-hub越远，制造商的生产批量越大，且Supply-hub中的零部件补货批量相比供应商负责时更大；当由供应商负责时，制造商的生产批量不随供应商的远近而变化，供应商的零部件生产批量也不变。此外，在适用Supply-hub的条件下，相比由制造商负责，由2个供应商负责Supply-hub的运营并分担其成本时，整个供应链的总成本更低，2个供应商与制造商之间可以通过合理分配使2个供应商与制造商的营运成本均有所降低，从而实现整个供应链系统的Pareto优化。
英文摘要：
Considering an assembly-type supply chain consisting of two suppliers and a manufac- turer, the cost functions of them are established. Moreover, the production and order quantity models are proposed respectively by the manufacturer and two suppliers responsible for the supply-hub＇s op- eration and costs. The results show that when the manufacturer is responsible for the supply-hub＇s operation, the farther the suppliers are from the supply-hub, the greater the manufacturer＇s produc- tion quantity is, and the replenishing lot-sizes of parts to the supply-hub are greater compared to the manufacturer being responsible for the supply-hub＇s operation. When two suppliers are responsible for the supply-hub~s operation, the production quantities of the manufacturer and suppliers do not va- ry with the distance between suppliers and supply-hub. Moreover, in the conditions for using supply- huh model, compared to the manufacturer, the suppliers are responsible for supply-hub operation and costs, which may make the whole supply chain to achieve Pareto optimization since the manufacturer and suppliers can obtain a win-win solution.
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