Showing 1 - 10 of 23
We report a puzzling pair of facts concerning the organization of science. The concentration of research output is declining at the department level but increasing at the individual level. For example, in evolutionary biology, over the period 1980 to 2000, the fraction of citation-weighted...
Persistent link: https://www.econbiz.de/10012459010
Does regulation affect the pace and nature of innovation and if so, by how much? We build a tractable and quantifiable … sharp reduction in the firm's innovation response to exogenous demand shocks for firms just below the regulatory threshold …. We then quantitatively fit the parameters of the model to the data, finding that innovation at the macro level is about 5 …
Persistent link: https://www.econbiz.de/10012482599
Scientific freedom and openness are hallmarks of academia: relative to their counterparts in industry, academics maintain discretion over their research agenda and allow others to build on their discoveries. This paper examines the relationship between openness and freedom, building on recent...
Persistent link: https://www.econbiz.de/10012463828
-by-step innovation. Innovations result from costly R&D investments and move technology up one step. Competition is inversely measured by …-and-neck. All these results are consistent with the predictions of step-by-step innovation models …
Persistent link: https://www.econbiz.de/10012458677
The recruitment of foreign scientists enhances US science through an expanded workforce but could also cause harm by displacing better connected domestic scientists, thereby reducing localized knowledge spillovers. We develop a model in which a sufficient condition for the absence of overall...
Persistent link: https://www.econbiz.de/10012453197
We examine how the spatial and social proximity of inventors affects knowledge flows, focusing especially on how the two forms of proximity interact. We develop a knowledge flow production function (KFPF) as a flexible tool for modeling access to knowledge and show that the optimal spatial...
Persistent link: https://www.econbiz.de/10012465834
We model a key step in the innovation process, hypothesis generation, as the making of predictions over a vast …, they use artificial intelligence (AI) instead. We model innovation as resulting from sequential search over a combinatorial … innovation outcomes of interest - the probability of innovation, expected search duration, and expected profit. We describe …
Persistent link: https://www.econbiz.de/10014337792
reduces carbon emissions by inducing substitution away from coal. Yet, the natural gas boom discourages innovation directed at …
Persistent link: https://www.econbiz.de/10014372414
This paper develops a model based on Schumpeter's process of creative destruction. It departs from existing models of endogenous growth in emphasizing obsolescence of old technologies induced by the accumulation of knowledge and the resulting process or industrial innovations. This has both...
Persistent link: https://www.econbiz.de/10012475814
This paper investigates the effect of export shocks on innovation. On the one hand a positive shock increases market … size and therefore innovation incentives for all firms. On the other hand it increases competition as more firms enter the … export market. This in turn reduces profits and therefore innovation incentives particularly for firms with low productivity …
Persistent link: https://www.econbiz.de/10012453117