Agglomeration and intra-firm linkage in R and D location in the United States
Research and development (R and D) activities in the United States, as in other advanced economies, are geographically concentrated relative to other economic activities. When examined at the scale of the metropolitan area and standardized
by population, only a small number of urban regions are significant complexes of R and D. Only ten urban regions are concentrations of both private R and D and overall R and D employment in the United States, but these are distributed in all regions
What does endogenous growth theory tell about regional economies ? Empirics of RD worker-based productivity growth
Cet article cherche à examiner l'importance des travailleurs R et D., en sous-tendant le modèle de Romer et en le comparant à un modèle basé sur l'accumulation du capital humain dans la R et D.
Structure, géomorphologie et sols (B. Swan)| climat (Chia LinSien)| végétation (R. D. Hill)| population (W. Neville)| agriculture et pêcheries (R. D. Hill)| agriculture commerciale (P. J. Courtenay)| matières premières, mines et énergie (P. J
. Courtenay)| commerce, transports et industrie (R. D. Hill)| les villes (T. G. McGee)| politiques et problèmes (M. E. Osborne).