We study from both a theoretical and an empirical perspective how a network of military alliances and enmities affects … the intensity of a conflict. The model combines elements from network theory and from the politico-economic theory of … characterization of the Nash equilibrium of the fighting game, and of how the network structure affects individual and total fighting …

by a network of unpaid software developers. Using data from Sourceforge.net, the largest repository of Open Source … Software (OSS) projects and contributors on the Internet, we construct two related networks: A Project network and a … Contributor network. Knowledge spillovers may be closely related to the structure of such networks, since contributors who work on …

often also that consumers make the proper usage decisions. This paper studies investment and usage in a shared ATM network … whether to withdraw cash at ATMs or branches. We find that banks substantially underinvested in the shared ATM network and … with partial incompatibility. Furthermore, we find that consumer usage of the available ATM network is too low because of …

to a distribution network is essential to the ability to compete, we show that this is not the case. Instead, the access … owner of the network. …