We introduce a heterogeneous connection model for network formation to capture the effect of cost heterogeneity on the structure of efficient networks. In the proposed model, connection costs are assumed to be separable, which means the total connection cost for each agent is uniquely...

In recent years, the government, of African Countries has assumed major responsibilities for economic reforms and growth. In attempting to describe their economies, economists (policymakers) in many African Countries have applied certain models that are by now widely known: Linear programming...

Today a plethora of inter-company alliances exists. Firms have networked value chains, disclosing consequently their strategy, which assets are internalized or externalized, and their ability to cope with fast change. The picture of all interfirm alliances in high tech sectors is that of an...

This work investigates the systemic factors behind cross-country variability in the transnational media coverage of foreign news in the EU in 2010. Using a large dataset on the transnational coverage of news by 148 EU national media, the paper maps the network of EU transnational citations and...