Figure 1. The herein proposed strategy improves significantly the resilience of the coupling between the communication system (39 stars) and the power grid (310 circles) in Italy.
The color scheme stands for the probability that the node is inactive after the random failure of 14 communication servers. In a) all communication servers are coupled while in b) four servers have been decoupled following the strategy proposed here. The coupling between the networks was established based on the geographical location of the nodes, such that each communication server is coupled with the closest power station2. The images were produced using the software Pajek.