This article makes a quantitative study on economic performance of arable land protection and land use regulation with dummy variable model.It is shown that land use regulation is favorable for economic growth and pro...This article makes a quantitative study on economic performance of arable land protection and land use regulation with dummy variable model.It is shown that land use regulation is favorable for economic growth and protection of arable land and that there are still some problems in the implementation of land use regulation.Thus,it puts forward corresponding suggestion.展开更多
China’s first general standard for stem cells officially released on November 22,2017 is expected to lay a foundation for regulating the application of stem cells technology.Stem cells are a group of self-renewal cel...China’s first general standard for stem cells officially released on November 22,2017 is expected to lay a foundation for regulating the application of stem cells technology.Stem cells are a group of self-renewal cells that can differentiate into specialized cells.They are now used for the treatment of many diseases.Despite a series of documents for regulating basic research and achievement transformation of stem cells,展开更多
An overview of significant new developments in water efficiency is presented in this paper. The areas covered will be legislative, regulatory, new programs or program wrinkles, new products, and new studies on the eff...An overview of significant new developments in water efficiency is presented in this paper. The areas covered will be legislative, regulatory, new programs or program wrinkles, new products, and new studies on the effectiveness of conservation programs. Examples include state and local level efficiency regulations in Texas; the final results of the national submetering study for apartments in the US; the US effort to adopt the IWA protocols for leak detection; new water efficient commercial products such as ET irrigation controllers, new models of efficient clothes washers, and innovative toilet designs.展开更多
This paper studies the effects of government land regulations(GLR)on housing supply elasticity in urban China.We first extend the theoretical framework of Saiz(2010),then use land transaction microdata,satellite-gener...This paper studies the effects of government land regulations(GLR)on housing supply elasticity in urban China.We first extend the theoretical framework of Saiz(2010),then use land transaction microdata,satellite-generated data,and the construction of instrumental variables to analyze the marginal effect of GLR,and finally calculate the housing supply elasticity caused by GLR.Our analysis finds that GLR is an important reason for the overall inelasticity of housing supply in 272 Chinese cities,which reduces housing supply elasticity from 1.457(elastic)to 0.872(inelastic).Housing supply elasticity caused by GLR has declined the most in first-tier cities and the eastern regions.The marginal effect of land use regulation is greater than that of land allocation and supp!y regulations.The initial development level and natural geographic constraint of each city also matter in China's housing supply market.展开更多
基金an achievement of the NSFC(National Natural Science Foundation Project)"Welfare Changes of Different Interest Groups and the Equilibrium of Their Welfare in the Process of Rural-urban Land Conversion" (Grant no. 70773047)Wuhan Social Science Foundation Project "Study on Quality Protection and Compensation Mechanism of Cropland Based on Construction Two Style Society in Wuhan Metropolitan Area" (Grant no. 09035)
文摘This article makes a quantitative study on economic performance of arable land protection and land use regulation with dummy variable model.It is shown that land use regulation is favorable for economic growth and protection of arable land and that there are still some problems in the implementation of land use regulation.Thus,it puts forward corresponding suggestion.
文摘China’s first general standard for stem cells officially released on November 22,2017 is expected to lay a foundation for regulating the application of stem cells technology.Stem cells are a group of self-renewal cells that can differentiate into specialized cells.They are now used for the treatment of many diseases.Despite a series of documents for regulating basic research and achievement transformation of stem cells,
文摘An overview of significant new developments in water efficiency is presented in this paper. The areas covered will be legislative, regulatory, new programs or program wrinkles, new products, and new studies on the effectiveness of conservation programs. Examples include state and local level efficiency regulations in Texas; the final results of the national submetering study for apartments in the US; the US effort to adopt the IWA protocols for leak detection; new water efficient commercial products such as ET irrigation controllers, new models of efficient clothes washers, and innovative toilet designs.
文摘This paper studies the effects of government land regulations(GLR)on housing supply elasticity in urban China.We first extend the theoretical framework of Saiz(2010),then use land transaction microdata,satellite-generated data,and the construction of instrumental variables to analyze the marginal effect of GLR,and finally calculate the housing supply elasticity caused by GLR.Our analysis finds that GLR is an important reason for the overall inelasticity of housing supply in 272 Chinese cities,which reduces housing supply elasticity from 1.457(elastic)to 0.872(inelastic).Housing supply elasticity caused by GLR has declined the most in first-tier cities and the eastern regions.The marginal effect of land use regulation is greater than that of land allocation and supp!y regulations.The initial development level and natural geographic constraint of each city also matter in China's housing supply market.
