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The rate of regional growth of new knowledge in the field of nanotechnology, as measured by counts of articles and patents in the open-access digital library NanoBank, is shown to be positively affected both by the size of existing regional stocks of recorded knowledge in all scientific fields, and the extent to which tacit knowledge in all fields flows(More)
Using data collected from the 2008 survey of Internal Migration and Health in China, this study examines the impact of late childhood nutrition intakes on a wide range of indicators of adult health. The results show that respondents who consume rich nutrients (meat, fish, milk, etc.) less frequently during late childhood have worse health outcomes when they(More)
Using data from the 2010 China Family Panel Study and countyand industry-level statistics, we estimate cross-classified multilevel models to examine the determinants of the income gap among Chinese workers. Results show that both regional and industrial differences are important sources of income inequality in China. Taken together, they account for about(More)
As population scientists have expanded the range of topics they study, increasingly considering the interrelationship between population phenomena and social, economic, and health conditions, they have expanded the kinds of data collected and have brought to bear new data collection techniques and procedures, often borrowed from other fields. These new(More)
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