of R&D. Our work analyzes knowledge diffusion and knowledge externalities in generating innovation and in determining … productivity of R&D resources in generating innovation (patenting) and productivity (TFP). While we find that knowledge diffusion …

constraints or the promotion of follow-on innovation. …

linked fields. Our analysis uses 1.8 million U.S. patents and their citation properties to map the innovation network and its … strength. Past innovation network structures are calculated using citation patterns across technology classes during 1975 … predictive power on future innovation after 1995. This pattern is consistent with the idea that when there is more past upstream …

Understanding the factors that may produce a sustained rate of innovation is important for promoting economic … development and growth. In this paper, we examine the role of human capital in firms' innovation by using a large sample of … small and medium sized cities. Patent applications are used as the measure of innovation. Human capital indicators used …

-wage countries, especially China. Does this competition hurt or help innovation by firms? This paper studies the effect of the surge … in imports from China on innovation in the US manufacturing sector. We combine patent, firm and trade data during 1990 … positive effect on firm innovation, as measured by citation-weighted patent applications. This positive effect persists when we …