Through the lens of the stock market,we examine whether and how the cloud economy affects China’s economy.We review the literature on cloud computing and related concepts and propose a definition of the cloud economy...Through the lens of the stock market,we examine whether and how the cloud economy affects China’s economy.We review the literature on cloud computing and related concepts and propose a definition of the cloud economy.Based on this new definition,we create a China Cloud Economy Index(CCEI)and its sub-indices.Using stock market data from 2012 to 2020,we analyze the basic characteristics of these indices,their validity,and their relationship with the overall stock market.The robustness of the new index is also examined.We find that the relationship between the CCEI and the stock market had been getting stronger but weakened somewhat after January 11,2019 plausibly because of the availability of recent cloud-related policies that have widened the gap between the market performance of CCEI and that of the stock market.展开更多
Simulating photosynthesis to convert CO_(2)into valuable chemicals is an effective strategy to achieve sustainable carbon recycles,and the high conversion efficiency and selectivity of photocatalytic conversion CO_(2)...Simulating photosynthesis to convert CO_(2)into valuable chemicals is an effective strategy to achieve sustainable carbon recycles,and the high conversion efficiency and selectivity of photocatalytic conversion CO_(2)to specific chemicals are the key challenges.Herein,a direct Z-scheme Bi_(2)WO_(6)/La_(2)Ti_(2)O_(7)photocatalyst is successfully syn-thesized by electrostatic self-assembly method.The selectivity of CO_(2)reduction to CO is improved from 74%of La_(2)Ti_(2)O_(7)to nearly 100%,and the CO yield is 7.5 times that of individual La_(2)Ti_(2)O_(7).The improvement of the photocatalytic performance is attributed to the formation of Z-scheme heterojunction between Bi_(2)WO_(6)and La_(2)Ti_(2)O_(7),which facilitates the separation and transfer of photogenerated carriers.This work provides a new insight for the construction of efficient photocatalyst for selective reduction of CO_(2)to CO.展开更多
文摘Through the lens of the stock market,we examine whether and how the cloud economy affects China’s economy.We review the literature on cloud computing and related concepts and propose a definition of the cloud economy.Based on this new definition,we create a China Cloud Economy Index(CCEI)and its sub-indices.Using stock market data from 2012 to 2020,we analyze the basic characteristics of these indices,their validity,and their relationship with the overall stock market.The robustness of the new index is also examined.We find that the relationship between the CCEI and the stock market had been getting stronger but weakened somewhat after January 11,2019 plausibly because of the availability of recent cloud-related policies that have widened the gap between the market performance of CCEI and that of the stock market.
基金supported by the National Natural Science Foundation of China(21972020 and 22172031)the Natural Science Foundation of Fujian Province(2021L3003)
文摘Simulating photosynthesis to convert CO_(2)into valuable chemicals is an effective strategy to achieve sustainable carbon recycles,and the high conversion efficiency and selectivity of photocatalytic conversion CO_(2)to specific chemicals are the key challenges.Herein,a direct Z-scheme Bi_(2)WO_(6)/La_(2)Ti_(2)O_(7)photocatalyst is successfully syn-thesized by electrostatic self-assembly method.The selectivity of CO_(2)reduction to CO is improved from 74%of La_(2)Ti_(2)O_(7)to nearly 100%,and the CO yield is 7.5 times that of individual La_(2)Ti_(2)O_(7).The improvement of the photocatalytic performance is attributed to the formation of Z-scheme heterojunction between Bi_(2)WO_(6)and La_(2)Ti_(2)O_(7),which facilitates the separation and transfer of photogenerated carriers.This work provides a new insight for the construction of efficient photocatalyst for selective reduction of CO_(2)to CO.
