The firms’ size distribution in the Italian Golden age has been described as a successful example of the adoption of the big business model which is characterized by large firms able to exploit the economies of scale of the modern technologies. Two main questions are present in literature: was...

The interbank market has a natural multiplex network representation. We employ a unique database of supervisory reports of Italian banks to the Banca d'Italia that includes all bilateral exposures broken down by maturity and by the secured and unsecured nature of the contract. We find that...

Real markets can be naturally represented as networks, and they share with other social networks the fundamental property of sparsity, whereby agents are connected by l = O (n) relationships. The exponential networks model introduced by Park and Newman can be extended in order to deal with this...

We represent an exchange economy in terms of statistical ensembles for complex networks by introducing the concept of market configuration. In this way, starting from economic reasoning, we obtain a sound interpretation of the typical network variables in terms of thermodynamic quantities...

[eng] Abstract This study examines the Italian railway system's conversion to electricity from three perspectives : the existing technology, the system's organization, and the competition between electric and steam traction. Italy adopted a backward technology (the low frequency three-phase...