Air transport network
[1] An anomalous property of the air transport networks is that nodes with relatively low degrees may have very high betweenness centrality.[1][5] The worldwide air transportation network is a critical infrastructure with high impact on mobility, trade and economy.[2][4] Modeling air transport networks aims airline companies to organize their routes in a cost-efficient way and therefore maximize their profits.[4][6] Once weaknesses are determined, a substitute node which can support all or part of the traffic load can be identified through the alternative strength for the pair.Air transport network is used by millions of people every day, therefore it plays key role in the spread of some infections, such as influenza or SARS.