This paper investigates the elusive role of productivity heterogeneity in new trade models in the trade and environment nexus. We contrast the Eaton-Kortum and the Melitz models with firm heterogeneity to the Armington and Krugman models without heterogeneity. We show that if firms have a constant emission share in terms of sales — as they do in a wide range of trade and environment models — the...
The interplay of technology and knowledge constitutes the backbone of entrepreneurial ecosystems, crucial for fostering innovation. This study applies the economic complexity approach as a tool for quantitatively evaluating these ecosystems in German labor market regions. Our contribution to the literature involves linking comprehensive micro-datasets encompassing economic sectors and patent data...