Showing 1 - 10 of 19
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/10013062172
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/10012921518
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/10012754047
The development prospects of a poor country depend in part on its capacity for innovation. The productivity of its …
Persistent link: https://www.econbiz.de/10012751076
innovation endogenously determines the dynamics of technology, and, therefore, market leadership and trade flows, in a world with … innovation motive, (ii) the expansionary innovation motive, and (iii) technology spillovers. The theoretical investigation …, dynamically, intensified globalization boosts domestic innovation through induced international competition. Accounting for …
Persistent link: https://www.econbiz.de/10012920880
Innovation is often predicated on discovering useful new combinations of existing knowledge in highly complex knowledge …
Persistent link: https://www.econbiz.de/10012920884
An inventor's own knowledge is a key input in the innovation process. This knowledge can be built by interacting with … of our new innovation-led endogenous growth model, in which innovations are produced by heterogeneous research teams of … model nests inside the innovation-based endogenous growth model. We estimate the model, which fits the data very closely …
Persistent link: https://www.econbiz.de/10012922975
How do non-practicing entities ("Patent Trolls") impact innovation and technological progress? Although this question …", who exploit the patent system to extract rents and thereby hurt innovation. We employ unprecedented access to NPE … also find that downstream innovation drops in fields where patents have been acquired by NPEs. Finally, our numerical …
Persistent link: https://www.econbiz.de/10012889482
This paper studies the effect of corporate and personal taxes on innovation in the United States over the twentieth … innovation: higher personal and corporate income taxes negatively affect the quantity and quality of inventive activity and shift … to another are important, but do not account for all of the effect. Agglomeration effects from local innovation clusters …
Persistent link: https://www.econbiz.de/10012911499
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 …
Persistent link: https://www.econbiz.de/10012980187