In real systems, the natural frequencies of the nodes are often distributed. In the previous sections, we considered this by using nonzero values for σω. Previously, a number of reports have investigated effective connection strategies for synchronizing an isolated single network comprised of inhomogeneous oscillators (Gleiser and Zanette, 2006; Brede, 2008). Going up one hierarchy in scale, it is reasonable to consider a case in which the subnetworks in a NoN have distinct average natural frequencies ω¯α. In the last section of this paper, we explore an optimal wiring strategy for synchronizing such a network.
