Wireless communication is used in many different situations such as mobile telephony, radio and TV broadcasting, satellite communication, and military operations. In each of these situations aâ€¦ (More)

We present a new Lagrangian-based heuristic for solving large-scale set-covering problems arising from crew-scheduling at the Italian Railways (Ferrovie dello Stato). Our heuristic obtainedâ€¦ (More)

The motion of the carotid atheromatous plaque relative to the adjacent wall may be related to the risk of cerebral events. A quantitative method for motion estimation was applied to analyse arterialâ€¦ (More)

Given a bipartite graph G=(V, U, E), a cover of G is a subset D c V with the property that each node u c U is adjacent to at least one node v c D. If a positive weight % is associated with each nodeâ€¦ (More)

Given a simple graph G(V, E) and a set of traffic demands between the nodes of G, the Network Loading Problem consists of installing minimum cost integer capacities on the edges of G allowing routingâ€¦ (More)

This paper provides a complete characterization of all the rank facets of the stable set polytope STAB(G) associated with a claw-free graph G. In particular, it is shown that a claw-free graph Gâ€¦ (More)