【摘要】 文章通过将推测导数引入企业研发的AJ模型,考察差异产品企业在理性或一致性推测的条件下研发策略和研发投入的变化,通过企业产品差异化参数将寡头企业研发决策扩展到产品相关的企业之间,从而扩大了AJ模型均衡的一般性,文章还给出一致性推测条件下的两种不同类别产品企业研发投入最优成本缩减反应曲线斜率和均衡成本缩减量与溢出效应之间的关系。更多还原

【Abstract】 Introducing conjectural variations into AJ model,this paper discusses the impact of rational or consistent conjectural variation on R&D strategy and R&D input of duopoly enterprises.With the help of pro-(duct) differentiation parameter,it thereby enlarges the adaptation scale of equilibrium of AJ model.And finally it also demonstrates the relations between product differentiation and spillover under rational or consistent conjectural variation.更多还原