The Web can be naturally modeled as a directed graph, consisting of a set of abstract nodes (the pages) joined by directional edges (the hyperlinks). Hyperlinks encode a considerab...
The neighbourhood function NG(t) of a graph G gives, for each t ∈ N, the number of pairs of nodes x, y such that y is reachable from x in less that t hops. The neighbourhood fun...
Abstract—With increasing popularity of media enabled handhelds, the need for high data-rate services for mobile users is evident. Large-scale Wireless LANs (WLANs) can provide su...
—Bandwidth demands and timing constraints are two major challenges for wireless video streaming applications. In this paper, we present a hybrid spatial/temporal retransmission p...
—One of the challenges of ambient systems lies in providing all the available services of the environment to the ambient devices, even if they do not physically host those servic...