隐性技术、贸易溢出和模仿策略

本文构建了一个扩展的南北贸易模型,将北方创新、南方模仿和进口产品隐性技术作为内生变量,分析进口国如何选择模仿策略以最大程度地获得进口产品的内生技术溢出效应.结果表明,进口产品中隐性技术含量会影响南方厂商的模仿策略:进口产品隐性技术含量低时,原始模仿是南方厂商的理性选择;进口产品隐性技术产量较高时,南方厂商的模仿策略取决于模仿的预期边际收益与单位模仿成本的对比关系:模仿的预期边际收益大于单位模仿成本时,内生模仿是南方厂商的最优选择,反之原始模仿.     

Effects of Nonlinear Time-Delay on a Stochastic Asymmetric System

We numerically investigate the effects of nonlinear time-delay on the stochastic system. With the delay time increasing, it is found that the peak of probability distribution in low steady states is decreased, and the peak of probability distribution in high steady states is increased. The mean of state variable, the normalized variance, and the normalized autocorrelation function which quantifies the concentrated degree are slowly varied for small delay time. However, the mean of state variable is rapidly increased, and the normalized variance and the normalized autocorrelation function is rapidly decreased for large delay time.     

进口中间品技术溢出效应影响因素分析——基于中低技术产业数据

本文采用CH模型考察进口中间品对我国中低技术产业的技术溢出效应,并将外部知识依赖程度、吸收能力、创新投入、公司规模和技术差距五个因素纳入CH基本模型,分析各因素对进口中间品技术溢出效应的影响。结果表明,不同因素对进口中间品的技术溢出存在或促进或阻碍的作用。