A New Approach for Measuring the Resilience of Transport Infrastructure Networks

Table 2

Topological characteristics of China railway and air transport networks.

Topological characteristic	N	D	AD	σ
Railway network	273	136173	498.8	3.7
Air transport network	139	17424	125.4	1.8

Note: N is nodes number; D is degree; AD = D/N, which is average degree; σ = 2D/N², which is connectivity degree [28].