Demographic change occurred in the last decade by the arrival of immigrant population has produced significant social and physical transformations in the Spanish cities. This article is part of a research on the residential and urban conditions of immigrant population in the Metropolitan Region...

This paper uses the Auerbach-Kotlikoff Dynamic Simulation Model to compare the projected demographic transitions in Canada and the United States. The simulation model determines the perfect foresight transition path of an economy in which individuals live to age 75. The model's preferences are...

Who invents? This is a central question to understanding possible barriers to entry in the innovation process. To address it, we match the Annual Report of the Commissioner of Patents from 1870 to 1940 to the corresponding U.S. Federal Population Censuses. This matching procedure provides a rich...