Based on stability in dividend policy, this paper studies on the quantity and form of dividend.

本文从股利政策稳定性的角度出发，对我国上市公司股利支付数量和支付形式进行研究。

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Then the incremental quantity discounts was taken into account and a PSO-based algorithm was developed to obtain the optimal (R, Q) policy and selection supplier for the buyer.

而后进一步考虑累进制数量折扣，给出基于粒子群算法的求解方法，通过算例和仿真讨论了供应商选择问题。

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Then the incremental quantity discounts was taken into account and a PSO-based algorithm was developed to obtain the optimal (R, Q) policy and selection supplier for the buyer.

而后进一步考虑累进制数量折扣，给出基于粒子群算法的求解方法，通过算例和仿真讨论了供应商选择问题。

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