基于门槛效应模型的医药制造业研究人员比重对研发投入创新效果的影响

Influence of the Proportion of Researchers in Pharmaceutical Manufacturing Industry on the Innovation Effect of R&D Investment Based on Threshold Effect Model

关键词:  医药制造业  研发投入  研究人员比重  创新绩效  门槛回归

Key words:  pharmaceutical manufacturing industry  research and experimental development  proportion of researchers  innovation performance  threshold regression

摘要:

目的 研究医药制造业研发人力队伍中研究人员的比重不同对研发投入与创新绩效关系的影响。方法 采用2011—2017年中国医药制造业省际面板数据为样本，以研究人员比重为门槛变量，建立面板门槛回归模型，探讨研发投入与创新绩效关系中是否存在门槛效应。结果 在以研究人员比重为门槛变量时，医药制造业研发投入与专利申请量和新产品销售收入2种创新绩效之间都存在显著的门槛效应。随着研究人员比重增加，研发投入对专利申请量的促进作用有所下降，对新产品销售收入的促进作用呈现先上升后下降的趋势。当研发人力队伍中研究人员的比重>35.182%且≤38.950%时，研发投入对2种创新绩效都可达到最优的产出效果。结论 医药制造业研发人力队伍中研究人员的比重控制在>35.182%且≤38.950%时研发团队的创新效率更高，研发投入对创新绩效的促进作用更加显著。

Abstract:

OBJECTIVE To investigate the effect of different proportions of researchers in the research and experimental development(R&D) workforce of pharmaceutical manufacturing industry on the relationship between R&D investment and innovation performance. METHODS Inter-provincial panel data of pharmaceutical manufacturing industry in China from 2011—2017 were used as samples, and a panel threshold regression model was established with the proportion of researchers as the threshold variable to explore whether there was a threshold effect in the relationship between R&D investment and innovation performance. RESULTS When the proportion of researchers was used as the threshold variable, there was a significant threshold effect between R&D investment and both innovation performance of patent applications and new product sales income in pharmaceutical manufacturing industry. As the proportion of researchers increased, the contribution of R&D investment to patent applications decreases, and the contribution to new product sales income tends to increase and then decrease. When the proportion of researchers in the R&D manpower team was >35.182% and ≤38.950%, R&D investment could achieve the optimal output effect on both innovation performance. CONCLUSION The innovation efficiency of R&D team is higher when the proportion of researchers in R&D manpower team of pharmaceutical manufacturing industry is controlled at >35.182% and ≤38.950%, and the promotion effect of R&D investment on innovation performance is more significant.