This paper sets up a simplified dynamic discrete selection model to analyze two-stage decision of corporate export behavior and influence of exchange rate under the framework of profit maximization. Then we adopt Heck...This paper sets up a simplified dynamic discrete selection model to analyze two-stage decision of corporate export behavior and influence of exchange rate under the framework of profit maximization. Then we adopt Heckman selection model to estimate general effects and structural effects of RMB appreciation on export based on the sample data of China Industrial Enterprises from 2005 to 2009. Findings reveal that RMB appreciation has exerted a significant negative impact to corporate export through extensive margins and intensive margins. Meanwhile, due to different corporate strategies of heterogeneous enterprises, RMB appreciation cannot achieve the expected effect of ＂survival of the fittest＂ and is instead unfavorable to the optimization of export structure. RMB appreciatiou drives industry structure of export to evolve towards advanced levels to a certain extent. However, such a positive effect mainly derives from the contribution of foreign-funded enterprises while restricting development space of indigenous firms in the sector of advanced manufacturing.展开更多
The development of e-commerce in agriculture is our weak link in the e-commerce system, the formation of agricultural industrialization and modernization of agriculture development incentives did not play its due role...The development of e-commerce in agriculture is our weak link in the e-commerce system, the formation of agricultural industrialization and modernization of agriculture development incentives did not play its due role. Improvement of agricultural e-commerce model is to provide a more direct way of agricultural e-commerce operations performance. Based on this, this paper analyzes the status quo of e-commerce development of agricultural markets, and it is to explore the complete path of agricultural development of electronic commerce.展开更多
Perovskite solar cells(PSCs)have attracted worldwide attention due to their high efficiency and low manufacturing cost.As the largest supplier of photovoltaic modules,China has made huge endeavors in the research on P...Perovskite solar cells(PSCs)have attracted worldwide attention due to their high efficiency and low manufacturing cost.As the largest supplier of photovoltaic modules,China has made huge endeavors in the research on PSCs.In 2019,Chinese research groups were still holding the top position for paper publications in the world.Both the efficiency and the stability of the device have been steadily increasing,pushing forward the commercialization of PSCs step by step.This review summarizes the highlights of China’s PSC research progress in 2019 and briefly introduces the development of PSC modules in industry.展开更多
文摘This paper sets up a simplified dynamic discrete selection model to analyze two-stage decision of corporate export behavior and influence of exchange rate under the framework of profit maximization. Then we adopt Heckman selection model to estimate general effects and structural effects of RMB appreciation on export based on the sample data of China Industrial Enterprises from 2005 to 2009. Findings reveal that RMB appreciation has exerted a significant negative impact to corporate export through extensive margins and intensive margins. Meanwhile, due to different corporate strategies of heterogeneous enterprises, RMB appreciation cannot achieve the expected effect of ＂survival of the fittest＂ and is instead unfavorable to the optimization of export structure. RMB appreciatiou drives industry structure of export to evolve towards advanced levels to a certain extent. However, such a positive effect mainly derives from the contribution of foreign-funded enterprises while restricting development space of indigenous firms in the sector of advanced manufacturing.
文摘The development of e-commerce in agriculture is our weak link in the e-commerce system, the formation of agricultural industrialization and modernization of agriculture development incentives did not play its due role. Improvement of agricultural e-commerce model is to provide a more direct way of agricultural e-commerce operations performance. Based on this, this paper analyzes the status quo of e-commerce development of agricultural markets, and it is to explore the complete path of agricultural development of electronic commerce.
基金supported by the National Natural Science Foundation of China(11834011,11674219)。
文摘Perovskite solar cells(PSCs)have attracted worldwide attention due to their high efficiency and low manufacturing cost.As the largest supplier of photovoltaic modules,China has made huge endeavors in the research on PSCs.In 2019,Chinese research groups were still holding the top position for paper publications in the world.Both the efficiency and the stability of the device have been steadily increasing,pushing forward the commercialization of PSCs step by step.This review summarizes the highlights of China’s PSC research progress in 2019 and briefly introduces the development of PSC modules in industry.
