We consider an M/M/1 queue with impatient customers and two different types of working
vacations. The working vacation policy is the one in which the server serves at a lower rate …

Software-defined network (SDN) controllers include mechanisms to globally reconfigure the
network in order to respond to a changing environment. As demands arrive or leave the …

Lightpath reconfiguration is a networking task that can be performed in order to improve
resource utilization. The lightpath reconfiguration problem becomes nontrivial when a new …

Abstract The Network Decontamination problem consists of coordinating a team of mobile
agents in order to clean a contaminated network. The problem is actually equivalent to …

We introduce the process number of a digraph as a tool to study rerouting issues in wdm
networks. This parameter is closely related to the vertex separation (or pathwidth). We …

Reconfiguration is one of the most important capabilities of WDM networks, together with
high bandwidth and long reach. In this paper, we survey the state-of-the-art technologies of …

Optical multilayer optimization continuously reorganizes layer 0-1-2 network elements to
handle both existing and dynamic traffic requirements in the most efficient manner. This …

Path decompositions of graphs are an important ingredient of dynamic programming
algorithms for solving efficiently many NP-hard problems. Therefore, computing the …

Dynamic traffic in optical networks leads to spectrum fragmentation, which significantly
reduces network performance, ie, increases blocking rate and reduces spectrum usage …

We consider a variant of the graph searching games that models the routing reconfiguration
problem in WDM networks. In the digraph processing game, a team of agents aims at …