This paper explores the specific pathway linking human capital class status and social identity to migrant workers’ permanent migration intentions using a structural equation model. While migrant workers‘ permanent migration intention is generally low, young migrant workers have higher intention than the middle-aged migrant workers. Class status and identity have direct impact on the intention, while class status also has an indirect effect through identity. Human capital has no direct effect, only indirectly influencing the permanent migration intention through class status and identity. There are intergenerational differences in the mechanism of influence. The young migrant workers?? intentions are affected by both class status and social identity, whereas the middle-aged workers are only influenced by social identity. Therefore, the current policy design of new style urbanization should pay attention to improving the quality of migrant workers‘human capital, and actively promote the social and cultural integration of migrant workers, so as to promote the upward mobility and urban identity of migrant workers, which ultimately promote the permanent migration.

HIV cases involving older people aged over 50 years have increased rapidly in China.Having sex is the major mode of HIV transmission.This study,using qualitative and quantitative data,investigates HIV risk and the sexual network among the elderly clients in the low price sex industry in a border county in Guangxi Province.Observation,interview,and questionnaire survey are conducted,and HIV,syphilis,hepatitis C test are applied.40 sex workers and 108 clients are involved in the research.There is a stable sex network among clients and sex workers,and the elderly clients are under HIV risk by the sex network.

Analysis of quantitative and qualitative data from a survey of peasant workers in Beijing shows that social identity of peasant-workers is not homogeneously linear and single-dimensional,but complex and multidimensional characterized by of duality.Communication with urban residents,income comparison with urban residents,annual duration of stay in Beijing,and future identity ownership are among the factors significantly influencing duality of social identity.