Agglomeration economies: different effects on TFP in high-tech and low-tech industries
研究了集聚效应对不同技术强度行业企业全要素生产率的影响，发现城市经济对高技术行业生产率影响最大，对低技术行业无影响，而本地化效应则对所有行业均有正向作用。
We study the impact of agglomeration effects on firms’ total factor productivity (TFP) for industry groups defined by technology intensity. This allows for non-uniform effects on firms depending on their technological level. We find that urban economies have the largest impact on firm productivity in high-technology industries, while they have no effect in low-technology industries. For firms in the latter industries, the diversity of the local economic structure is relevant. Localisation effects have a consistently positive and significant impact on TFP, with the effect increasing with the technology intensity of the industries.