With the new middleware IT technologies such as Web Services and peer-to-peer computing facilities, a Virtual Enterprise can be built easier achieving some problems of interoperabi...
Adaptivity is a challenging open issue in data stream management. In this paper, we tackle the problem of memory adaptivity inside a system executing temporal sliding window queri...
An ontology of observation and measurement is proposed, which models the relevant information processes independently of sensor technology. It is kept at a sufficiently general lev...
Electronic marketplaces are virtual communities where buyers may meet proposals of several suppliers and make the best choice. The exponential increment of the e-commerce amplifie...
This paper describes a Web-services-based system which we have developed to enable organizations to semi-automatically preserve their digital collections by dynamically discoverin...