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Transfer reliability has an important impact on the urban bus network. The proportion of zero and one transfer time is a key indicator to measure the connectivity of bus networks. However, it is hard to calculate the transfer time between nodes because of the complicated network structure. In this paper, the topological structures of urban bus network in Jinan are constructed by space L and space P. A method to calculate transfer times between stations has been proposed by reachable matrix under space P. The result shows that it is efficient to calculate the transfer time between nodes in large networks. In order to test the transfer reliability, a node failure process has been built according to degree, clustering coefficient and betweenness centrality under space L and space P. The results show that the deliberate attack by betweenness centrality under space P is more effective compared with other five attack modes. This research could provide a power tool to find hub stations in bus networks and give a help for traffic manager to guarantee the normal operation of urban bus systems.

MANET is currently a hotspot in the wireless network research domain, and the routing protocol, which is as the core technology on network layers, is particularly important. Improving the routing-stability can decrease the numbers of routing reconstruction, network delay and routing control overhead, which is the key to realize the transmission of efficient service in MANET. On the basis of defining the link-stability and the path-stability, combining with the idea of min-cost max-flow in networks, this paper puts forward the max-stability shortest-path model. Then the paper defines the percentage of the stability improvement as an evaluating indicator to do network simulations. Results of simulations show that this model can efficiently improve the routingstability and with the increasing of one-hop radius and node movement speed, the improvement effect of routing-stability is more obvious.