Enhancing the basic role of consumption in economic development is an important way to enhance the endogenous stability of economic development and to promote high-quality economic development.The focus of economic de...Enhancing the basic role of consumption in economic development is an important way to enhance the endogenous stability of economic development and to promote high-quality economic development.The focus of economic development has shifted from production to consumption,the stage of economic development has shifted from supply constraints to demand constraints,the economic development strategy has shifted from export-oriented to the new pattern of dual circulation,and the economic development model has shifted from extensive growth to high-quality development,which has promoted the transformation of economic development momentum from an investment-led economy to a consumption-led economy.Consumption plays a fundamental role in economic development,and matched production,equal distribution,and smooth exchange provide conditions for consumption to promote economic development,which is a typical feature of a consumption-led economy.China is generally in the primary stage of a consumption-led economy.To promote the transformation of China's economic development momentum,it is necessary to match the economic development momentum with the economic development stage and promote the adaptive transformation of the economic development momentum from an investment-led economy to a consumption-led economy.展开更多
Where sustainable development is concerned, there is an urgent need to establish new information systems that integrate economic, social and ecological factors. The emergence of demand for this information makes the d...Where sustainable development is concerned, there is an urgent need to establish new information systems that integrate economic, social and ecological factors. The emergence of demand for this information makes the development of ecological accounting possible. Yet, most current research on ecological accounting focuses on two aspects: (1) the theoretical aspect, including background, concepts and models and (2) specific research on ecological accounting. Some scholars have proposed a conceptual framework, but this is not systematic or thorough enough. Seizing the opportunity of sustainable development in a key strategic location of the world, this paper begins by analyzing the logical evolution of ecological accounting, summarizes the existing ecological accounting theory, and combines the mature theoretical study of resources accounting with environmental accounting. All of these efforts result in this paper forwarding a framework of ecological accounting that aims to provide a guideline for future development.展开更多
Two batches of Bi‐2212 precursor powder with Sr/Ca=2.24,2.33 were prepared by the spray pyrolysis tech-nology.Then two Bi‐2212 superconducting wires marked as Line4 and Line8‐2 were prepared by the above powders.Li...Two batches of Bi‐2212 precursor powder with Sr/Ca=2.24,2.33 were prepared by the spray pyrolysis tech-nology.Then two Bi‐2212 superconducting wires marked as Line4 and Line8‐2 were prepared by the above powders.Line4 with Sr/Ca=2.24 showed much higher phase purity,higher texture and its critical current density(J_(c))was 1.5 times that of Line8‐2 with Sr/Ca=2.33.Their micro‐structure evolution was scrutinized by quenching each wire at 7 instantaneous moments during the partial melting process(PMP).Bi‐2212 was found to decompose into(Sr,Ca)_(14)Cu_(24)O_(x)(14:24AEC),Bi_(9)Sr_(11)Ca_(5)O_(x)(9:16CF),Bi‐rich liquid Bi‐2212 and Bi‐rich solid Bi‐2212 at the initial stage of PMP.When Bi‐2212 began to solidify,the above four phases reacted to generate Bi‐2212.By analyzing the particle size,the content and the composition variation for 14:24AEC,9:16CF as well as the composition variation for Bi‐2212 matrix in above 7 moments of PMP,the phase evolu-tion’s difference between two wires was finally confirmed.The formation energy of 14:24AEC was smaller compared with 9:16CF,while 9:16CF was faster on dynamics.14:24AEC determined the whole synthetic reac-tion’s rate of Bi‐2212,and Sr/Ca as well as its value fluctuation in Bi‐2212 precursor powder can decide both the timeline and the driving force of PMP.A larger Sr/Ca in Line8‐2 made it melt earlier compared with Line4,which led to its earlier timeline during the melting stage of PMP.While the more consistent phase evolution’s pace between 14:24AEC and 9:16CF in Line4 finally contributed a larger Sr/Ca after solidification.Both the larger Sr/Ca and its larger fluctuation in Line4 finally contributed to its faster phase evolution’s pace,higher phase purity,better texture and higher J_(c).The deep logic driving the phase evolution mechanism in Bi‐2212 wires was disclosed for the first time,which will be very helpful to the future improvement of J_(c)for Bi‐2212 wires.展开更多
基金supported by the Outstanding Young Leading Talent Project titled"Research on the Measurement and Growth of Digital Consumption"(No.2022SMRC03),approved by the Modern Business Research Center at Zhejiang Gongshang University,the Key Research Base for Humanities and Social Sciences under the Ministry of Educationsupported by the"Research on the Current Situation,Issues and Strategies of China's Consumption-Led Economic Development"under the Special Research Project of"Consumption Promotion"of Zhejiang Gongshang University。
文摘Enhancing the basic role of consumption in economic development is an important way to enhance the endogenous stability of economic development and to promote high-quality economic development.The focus of economic development has shifted from production to consumption,the stage of economic development has shifted from supply constraints to demand constraints,the economic development strategy has shifted from export-oriented to the new pattern of dual circulation,and the economic development model has shifted from extensive growth to high-quality development,which has promoted the transformation of economic development momentum from an investment-led economy to a consumption-led economy.Consumption plays a fundamental role in economic development,and matched production,equal distribution,and smooth exchange provide conditions for consumption to promote economic development,which is a typical feature of a consumption-led economy.China is generally in the primary stage of a consumption-led economy.To promote the transformation of China's economic development momentum,it is necessary to match the economic development momentum with the economic development stage and promote the adaptive transformation of the economic development momentum from an investment-led economy to a consumption-led economy.
文摘Where sustainable development is concerned, there is an urgent need to establish new information systems that integrate economic, social and ecological factors. The emergence of demand for this information makes the development of ecological accounting possible. Yet, most current research on ecological accounting focuses on two aspects: (1) the theoretical aspect, including background, concepts and models and (2) specific research on ecological accounting. Some scholars have proposed a conceptual framework, but this is not systematic or thorough enough. Seizing the opportunity of sustainable development in a key strategic location of the world, this paper begins by analyzing the logical evolution of ecological accounting, summarizes the existing ecological accounting theory, and combines the mature theoretical study of resources accounting with environmental accounting. All of these efforts result in this paper forwarding a framework of ecological accounting that aims to provide a guideline for future development.
基金financially supported by the Key Research and Development Program of Shaanxi(Program No.2023‐YBGY‐428)the National natural Science foundation of China(No.52002333)+2 种基金the Science and Technology Planning Project in Weiyang District of Xi’an(No.202107)the National Key R&D Program of China(Grant No.2021YFB3800201)the National natural Science foundation of China(No.52277029).
文摘Two batches of Bi‐2212 precursor powder with Sr/Ca=2.24,2.33 were prepared by the spray pyrolysis tech-nology.Then two Bi‐2212 superconducting wires marked as Line4 and Line8‐2 were prepared by the above powders.Line4 with Sr/Ca=2.24 showed much higher phase purity,higher texture and its critical current density(J_(c))was 1.5 times that of Line8‐2 with Sr/Ca=2.33.Their micro‐structure evolution was scrutinized by quenching each wire at 7 instantaneous moments during the partial melting process(PMP).Bi‐2212 was found to decompose into(Sr,Ca)_(14)Cu_(24)O_(x)(14:24AEC),Bi_(9)Sr_(11)Ca_(5)O_(x)(9:16CF),Bi‐rich liquid Bi‐2212 and Bi‐rich solid Bi‐2212 at the initial stage of PMP.When Bi‐2212 began to solidify,the above four phases reacted to generate Bi‐2212.By analyzing the particle size,the content and the composition variation for 14:24AEC,9:16CF as well as the composition variation for Bi‐2212 matrix in above 7 moments of PMP,the phase evolu-tion’s difference between two wires was finally confirmed.The formation energy of 14:24AEC was smaller compared with 9:16CF,while 9:16CF was faster on dynamics.14:24AEC determined the whole synthetic reac-tion’s rate of Bi‐2212,and Sr/Ca as well as its value fluctuation in Bi‐2212 precursor powder can decide both the timeline and the driving force of PMP.A larger Sr/Ca in Line8‐2 made it melt earlier compared with Line4,which led to its earlier timeline during the melting stage of PMP.While the more consistent phase evolution’s pace between 14:24AEC and 9:16CF in Line4 finally contributed a larger Sr/Ca after solidification.Both the larger Sr/Ca and its larger fluctuation in Line4 finally contributed to its faster phase evolution’s pace,higher phase purity,better texture and higher J_(c).The deep logic driving the phase evolution mechanism in Bi‐2212 wires was disclosed for the first time,which will be very helpful to the future improvement of J_(c)for Bi‐2212 wires.
