There is a recent interest in the research of Lifelong Learning and other related kinds of learning (formal, non-formal and informal). Some projects have been held in order to propose frameworks for managing all these types of learning, giving special attention to the informal learning. The TRAILER project is one of them. It supports the identification and management of informal learning activi...

This study investigates whether and how a platform’s provision of performance feedback to users about their prior content contributions can help to stimulate users’ subsequent contributions. We draw on social value orientation theory to hypothesize how different framings may impact users’ likelihood of producing additional content. We partnered with a major mobile crowdsourcing recipe platform ...

This paper investigates the joint use of push-out mechanisms with RED-like discarding policies to support service differentiation in the Internet. The efficiency and the degree of differentiation of a Complete Sharing with push-out, a RIO and a RIO with push-out queues are assessed. Results indicate that push-out used jointly with RED-like policies does not improve the performance.

Service developers and standardization bodies have focused on push concepts for the mobile Internet recently. Because of the convergence of IP and mobile networks a common architecture for push scenarios is possible. We discuss several use-cases for push communication concepts and their technological implications. Finally we present and evaluate a unified push service architecture, based on SIP.