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农村养老保险、养老金待遇与最优政策组合 被引量:5
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作者 杨再贵 曹园 《科学决策》 CSSCI 2015年第6期49-64,共16页
采用OLG模型考察了农村养老保险个人缴费率、集体补助率、地方政府补贴率、基础养老金率和人口增长率对资本积累、人均消费和养老金的影响,并寻求政策变量最优组合。研究发现,提高个人缴费率会增加养老金;提高集体补助率、地方政府补贴... 采用OLG模型考察了农村养老保险个人缴费率、集体补助率、地方政府补贴率、基础养老金率和人口增长率对资本积累、人均消费和养老金的影响,并寻求政策变量最优组合。研究发现,提高个人缴费率会增加养老金;提高集体补助率、地方政府补贴率以及人口增长率下降都会增加资本劳动比、人均消费和养老金;提高基础养老金率会降低资本劳动比和人均消费而增加养老金。同时,最优的地方政府和集体补贴率随最优基础养老金率同方向变动。若最优基础养老金率不变,则人口增长率小幅变动会引起最优地方政府和集体补贴率大幅反向变动。根据影响方向和力度,应提高个人缴费率和集体补助率,调整财政支出结构以维持现有基础养老金率、相应提高地方政府补贴率,控制人口增长率。 展开更多
关键词 农村养老保险 养老金待遇 政策变量最优组合
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A MULTI-PERIOD PRICING AND INVENTORY CONTROL MODEL
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作者 Juliang ZHANG Jian CHEN 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2010年第2期249-260,共12页
The authors analyze a finite horizon,single product,period review model in which pricingand inventory decisions are made simultaneously.Demands in different periods are random variablesthat are independent of each oth... The authors analyze a finite horizon,single product,period review model in which pricingand inventory decisions are made simultaneously.Demands in different periods are random variablesthat are independent of each other and their distributions depend on the product price.Pricing andordering decisions are made at the beginning of each period and all shortage are backlogged.Orderingcost is a convex function of the amount ordered.The objective is to find an inventory and pricing policymaximizing expected discounted profit over the finite horizon.The authors characterize the structure ofthe optimal combined pricing and inventory strategy for this model.Moreover,the authors demonstratehow the profit-to-go function,order up to level,reorder point and optimal price change with respectto state and time. 展开更多
关键词 Convex cost function planning horizon PRICING stochastic inventory management uncertainty.
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