With over half a billion users, Online Social Networks (OSNs) are the major new applications on the Internet. Little information is available on the network impact of OSNs, althou...
Popular content in video sharing web sites (e.g., YouTube) is usually duplicated. Most scholars deļ¬ne near-duplicate video clips (NDVC) based on non-semantic features (e.g., diļ...
Mauro Cherubini, Rodrigo de Oliveira, Nuria Oliver
Traditional access control models, such as Role-Based Access Control (RBAC), do not take into account contextual information, such as location and time, for making access decision...
In this paper, we present a mandatory access control system that uses input from multiple stakeholders to compose policies based on runtime information. In the emerging ubiquitous...
We deļ¬ne some interesting incentive issues that arise in the management of virtual infrastructures. We demonstrate that participantsā decisions about the quantities of infrast...