Emergence of hierarchical networks and polysynchronous behaviour in   simple adaptive systems
  We describe the dynamics of a simple adaptive network. The network architecture evolves to a number of disconnected components on which the dynamics is characterized by the possibility of differently synchronized nodes within the same network (polysynchronous states). These systems may have implications for the evolutionary emergence of polysynchrony and hierarchical networks in physical or biological systems modeled by adaptive networks. 
V. Botella-Soler, P. Glendinning
nlin.AO