Using Portugal, Spain and Italy as case studies, examines the relationship between social protection and local economic development.

Illegal digital file consumption is widely believed to influence sales of cultural goods. Online piracy is now  regulated  and  prohibited  in  some  countries,  especially  in  France,  where  HADOPI  is  a  legal  authority in charge of Peer-­‐to-­‐Peer (P2P) protocol...

Online commercial interactions have increased dramatically over the last decade, leading to the emergence of networks that link the electronic commerce landing pages of related products to one another. Our paper conjectures that the explicit visibility of such "product networks"can alter demand...

Social contacts influence decisions and economic outputs in a variety of contexts. Does social network matter also in financial markets? In this paper I investigate the effect of social networks on mutual funds performance by exploiting data on the education of U.S. fund managers. The results...

The influence of microblog on information transmission is becoming more and more obvious. By characterizing the behavior of following and being followed as out-degree and in-degree respectively, a microblog social network was built in this paper. It was found to have short diameter of connected...

We introduce a stochastic model which describes the information diffusion on the network of a popular web service, Twitter. Restricting our attention to the daily diffusion from a popular account, we model the information diffusion as a random multiplicative process. We justify our model by...

The characterization of complex networks is a procedure that is currently found in several research studies. Nevertheless, few studies present a discussion on networks in which the basic element is a clique. In this paper, we propose an approach based on a network of cliques. This approach...

In the literature of social networks, understanding topological structure is an important scientific issue. In this paper, we construct a network from mobile phone call records and use the cumulative number of calls as a measure of the weight of a social tie. We extract skeletons from the...

We present a dynamical model for the spread of HIV in a finite discrete population of size n represented by the set V. The model takes into account the structure of the sexual network, the density of infected population in each individual’s sexual partners, and a reasonable amount of the...

We explain a possible mechanism of an information spreading on a network which spreads extremely far from a seed node, namely the viral spreading. On the basis of a model of the information spreading in an online social network, in which the dynamics is expressed as a random multiplicative...