Feenstra and Ma (2008) develop a monopolistic competition model where firms choose their optimal product scope by balancing the profits from a new variety against the costs of cannibalizing sales of existing varieties. While more productive firms always have a higher market share, there is no...

We analyze within a dynamic model how firms decide on capital investment if the accompanying adjustment costs are a function of governmental activity. The government provides a public input and decides on the degree of rivalry. The productive public input enhances private capital productivity...

Wir untersuchen die gleichgewichtige Entwicklung der Umweltqualität in einem endogenen Wachstumsmodell, wobei die Umweltverschmutzung durch die Güterproduktion verursacht und durch Umweltschutzausgaben verringert wird. Nehmen die Wirtschaftssubjekte nur einen Teil ihres individuellen...

This paper analyzes, within a regional growth model, the impact of productive governmental policy and integration on the spatial distribution of economic activity. Integration is understood as enhancing territorial cooperation between the regions, and it describes the extent to which one region...

This paper uses an oligopoly model with heterogeneous firms to examine how an industry adjusts to rising import competition. The model predicts that in the short run the least efficient firms in the industry become inactive, surviving firms face a fall in output, mark-ups and profits, and the...