This paper discusses a model of the New Economic Geography, in which the seminal core-periphery model of Krugman (1991) is extended by endogenous research activities. Beyond the common "anonymous" consideration of R&D expenditures within fixed costs, this model introduces vertical product...

Observing regions, for instance in Europe, one may easily notice inequalities in the resources they devote to innovation activities and in the results they reach in terms of economic success. In this respect, it may be assumed at first glance that a hierarchy of regional environment could be...

In this paper we investigate shifts in Twitter network topology resulting from the type of information being shared. We identified communities matching areas of agricultural expertise and measured the core-periphery centralization of network formations resulting from users sharing generic versus...