Eigenvalue Spectrum and Synchronizability of Two Types of Double-Layer Star-Ring Networks with Hybrid Directional Coupling

Table 2

The change of synchronizability with the increase of of Network I when N is odd.

		Increase of	Increase of	Increase of	Increase of
The unbounded synchronous region		Unchanged	Unchanged	Unchanged	Strengthened
		Strengthened	Unchanged	Unchanged	Unchanged
The bounded synchronous region		Weakened	Weakened	Weakened	Strengthened
		Strengthened	Weakened	Weakened	Unchanged