We take Chongqing as an example to analyze reasons for rural population gradient transfer from such factors as social system, industrial development, urban planning, and living costs. Finally, we present four policies and suggestions, including promoting urban construction, increasing investment...

By selecting the relevant indices of data concerning the income and consumption of urban residents and rural residents in Chongqing City from 2000 to 2009, we adopt empirical analysis method and comparative analysis method to conduct comparative analysis from overall level, consumption structure...

Detecting communities from complex networks has recently triggered great interest. Aiming at this problem, a new ant colony optimization strategy building on the Markov random walks theory, which is named as MACO, is proposed in this paper. The framework of ant colony optimization is taken as...

This study investigates determinants of the number of injured, deceased and missing occupants and the damage cost of passenger vessel accidents that were investigated by the US Coast Guard for the years 1991--2001. Negative binomial and Poisson regression estimates suggest that: (1)...

This study investigates determinants of the number of non-fatal crew injuries, fatal crew injuries and missing crew in freight ship, tanker and tugboat vessel accidents based upon individual accidents investigated by the US Coast Guard for the 1991--2001 period. Poisson and negative binomial...