A very significant issue today concerns the problem of air pollution caused mainly by human activity. The statistics show that most of the pollutants in the atmosphere is due to emissions caused by anthropogenic factors (e.g. power and industrial plants, traffic and combustion phenomena in...

The best tools to manage the exchange of information and services between heterogeneous subjects through new technological tools with particular reference to information systems are certainly the Web-based information systems. Leveraging the infrastructure of the Web, these systems may be able...

We propose an algorithm for computing "main stable sets" recently introduced by Ciardiello, Di Liddo (2009) on effectiveness form coalitional games modeled through a directed pseudograph. The algorithm is based upon a graph traversing method exploring extended paths minimal in coalitions and we...

Efficient and generalized deployment of rich multimedia contents is a challenging target that is becoming more and more important in the modern information society. In this work we first examine the technical background behind the general problem of multimedia content deployment. Then we study...

Learning is a continuous process, without end, which takes place throughout life, and is the result of the interaction of an individual with a physical external environment, a social context or with herself. In what new technologies may help improving and making more effective the interaction of...

Wireless Ad-hoc single-rate environments typically use a Distance Vector routing with a metric based on the minimization of the hop-count. In practice, the technique of minimizing the distance does not reward in the case of multi-rate, therefore it may be prefereable touse protocols privileging...

Il rapido aumento del volume di traffico nelle reti metropolitane sta sfidando i limiti di capacit`a delle esistenti infrastrutture di trasporto basate su tecnologie circuit-oriented quali SONET e ATM. Le inefficienze associate al trasporto di crescenti quantita' di traffico dati su reti...

Technological development and explosion of computing tools allow today to make best use of modeling methodologies that in the past were not able to perform the calculations necessary for the mathematical representation of a complex system. This paper illustrates some directions in literature...