Today the World Wide Web is seen as an unique medium for interaction. Every organisation has or is about to have its own Web site, aiming to attract as much visitors as each one c...
Most of work on partial information in databases asks which operations of standard languages, like relational algebra, can still be performed correctly in the presence of nulls. In...
The dynamics of peer participation, or churn, are an inherent property of Peer-to-Peer (P2P) systems and critical for design and evaluation. Accurately characterizing churn requir...
We have proposed in the past three separate methodologies for secure software development. We have found that they have many common and complementary aspects and we proposed a com...
In this work we discuss a number of issues for the design of hypertext systems in an actor-based model of computation. We examine how the "traditional" basic concepts whi...