In recent years,China,the world’s largest population country,has also become an aging society.Social endowment insurance is not only a major source of income after retirement but also plays a major role in social sta...In recent years,China,the world’s largest population country,has also become an aging society.Social endowment insurance is not only a major source of income after retirement but also plays a major role in social stability.In 2005,large-scale social endowment insurance reform was conducted in China.Through this reform,the social endowment insurance became unified and normalized,and the participation of the social endowment insurance was obligated for an employee.In addition,the government has issued various welfare policies so that the unemployed,free job and rural residents can join social endowment insurance.Then,this paper analyzes the effect of the reform of China social endowment insurance on the amount of Insurance premium of social endowment insurance and the distribution of family expenditure by using the DID model and the fixed effect model.展开更多
Research of superconducting nanowire singlephoton detectors(SNSPDs) has been progressing rapidly in recent years. The combined properties of high efficiency,low noise, and fast speed of SNSPDs permit its applications ...Research of superconducting nanowire singlephoton detectors(SNSPDs) has been progressing rapidly in recent years. The combined properties of high efficiency,low noise, and fast speed of SNSPDs permit its applications ranging from long-distance quantum teleportation to moonto-earth optical communications. Here we briefly discussed recent progress of SNSPDs, in particular(1) tungstensilicide SNSPDs,(2) waveguide-integrated SNSPDs, and(3) a few applied demonstrations.展开更多
文摘In recent years,China,the world’s largest population country,has also become an aging society.Social endowment insurance is not only a major source of income after retirement but also plays a major role in social stability.In 2005,large-scale social endowment insurance reform was conducted in China.Through this reform,the social endowment insurance became unified and normalized,and the participation of the social endowment insurance was obligated for an employee.In addition,the government has issued various welfare policies so that the unemployed,free job and rural residents can join social endowment insurance.Then,this paper analyzes the effect of the reform of China social endowment insurance on the amount of Insurance premium of social endowment insurance and the distribution of family expenditure by using the DID model and the fixed effect model.
基金supported by the National Natural Science Foundation of China(61505141 and 11527808)the National Thousand Talents Plan for Young Professionals
文摘Research of superconducting nanowire singlephoton detectors(SNSPDs) has been progressing rapidly in recent years. The combined properties of high efficiency,low noise, and fast speed of SNSPDs permit its applications ranging from long-distance quantum teleportation to moonto-earth optical communications. Here we briefly discussed recent progress of SNSPDs, in particular(1) tungstensilicide SNSPDs,(2) waveguide-integrated SNSPDs, and(3) a few applied demonstrations.
