We study the relationships between corporate R&D and three components of public science: knowledge, human capital, and … established firms, which account for more than three-quarters of business R&D, is affected by scientific knowledge produced by … innovation in firms. However, inventions from universities and public research institutes substitute for corporate inventions and …

) from upper-tail knowledge. As a proxy for the historical presence of knowledge elites, we use city-level subscriptions to … firm survey from the 1840s, we shed light on the mechanism: upper-tail knowledge raised productivity in innovative …

Innovation is often predicated on discovering useful new combinations of existing knowledge in highly complex knowledge …, and particle physics. We develop a combinatorial-based knowledge production function and embed it in the classic Jones …. This production function is a generalization (and reinterpretation) of the Romer/Jones knowledge production function …

information. We also find that the relative importance of knowledge sources varies systematically with the type of innovation … organization that one of the main drivers of differences in productivity is differences in knowledge. We examine a new data set of … detailed measures of knowledge outputs, knowledge investments, and sources of existing knowledge. We find that globally engaged …

knowledge accumulates as technology progresses, then successive generations of innovators may face an increasing educational … negative implications for growth. I develop a formal model of this "knowledge burden mechanism" and derive six testable … sufficiently rapid increase in the burden of knowledge. In cross-section, the model predicts that specialization and teamwork will …