based on a model that integrates different kinds of diversity measures aiming at capturing Jacobs externalities, a … production specialisation measure aiming at capturing Marshall-Arrow-Romer (MAR) externalities and regions as well as sector … that both kinds of externalities significantly influence innovation, although the influence of Jacobs externalities is more …

resonate with the idea that urban economies provide a mix of industrial diversity and specialisation. A location in a within …As cities increasingly become centers of economic growth and innovation, there is a need to understand their inner …-standing question whether agglomeration economies derive from specialization (within-industry) or diversity (between-industry). We show …

propose that specialization and diversity may offer externalities operating at different spatial scales. Using high …-level production function to show that close proximity to employment density in the own industry, as well as city-wide diversity …

accounts for technological interdependence among countries through spatial externalities. The original version models …