Social Networks such as Twitter are often used for disseminating and collecting information during natural disasters. The potential for its use in Disaster Management has been acknowledged. However, more nuanced understanding of the communications that take place on social networks are required to more effectively integrate this information into the processes within disaster management. The typ...

We analyze a rational expectations equilibrium model to explore the implications of information networks for financial market outcomes. Holding fixed the amount of information in the economy, network communications improve market efficiency, reduce the cost of capital, increase liquidity and trading volume. However, in equilibrium, social communications reduce information acquisition and thus h...

A framework, the IGCV (Identification, Grouping, Clustering and Visualisation) framework, is described to support the temporal analysis of social network data. More specifically the identification and visualisation of “traffic movement” of patterns in such networks, and how such patterns change over time. A full description of the operation of IGCV is presented, together with an evaluation of i...

Social networks and the propagation of content within social networks have received an extensive attention during the past few years. Social network content propagation is believed to depend on the similarity of users as well as on the existence of friends in the social network. Our former investigation of the YouTube social network showed that strangers (non-friends and non-followers) play a m...

Over the past ten years or so there has been renewed research interest in the relative impact of peer selection and peer influence on the increasing similarity of teenagers in their substance use. Researchers have concluded that either peer selection or peer influence explained the similarity. This paper examines this research question differently using complete network data and arrives at diff...

This paper aims at the trust calculation in social networks by addressing some major issues: Firstly, the paper evaluates a specific trust function and its behaviors, and then it focuses on the modification of that trust function by considering diverse scenarios. After that, the paper proposes a new approach with a specific functionality. The main goals are to support good agents strongly, bloc...

Survival of any organization heavily depends on knowledge sharing, however, the variables that enhance or dissuade knowledge sharing behaviors in the Jordanian hospitals has not been poorly recognized. The aim of this research is to determining and examining the factors that may encourage and enhance the knowledge sharing behavior among stakeholders in Jordanian hospitals using social networks....