Jorge Luís Victória Barbosa

Professionals are constantly seeking qualification and consequently increasing their knowledge in their area of expertise. Thus, it is interesting to develop a computer system that knows its users and their work history. Using this information, even in the case of professional role change, the system could allow the renewed authorization for activities, based on previously [...]

This article presents the U-Deal, a decentralized and multi-agent ubiquitous commerce model, that describes a peer-to-peer context aware system, with a distributed context history (trail) engine and a dynamic profile generator. The aim of the model is to provide an automatic deal opportunity recommendation based on user profile, preferences and activities history in a peer-to-peer [...]

This article presents the results of an experience of SMS (Short Message Service) use to support teaching and learning in face to face undergraduate courses (Computer Sciences and Management) in a Brazilian university. The students' perceptions regarding the use of this technology were assessed via a questionnaire answered by the 143 students that participated of [...]

The evolution of computing technology and wireless networks has contributed to the miniaturization of mobile devices and their increase in power, providing services anywhere and anytime. In this scenario, applications have considered the user’s contexts to make decisions (Context Awareness). Context-aware applications have enabled new opportunities in different areas, for example, education, games and entertainment, [...]