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Carleson Measures on Planar Sets

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Acta Mathematica Sinica,English Series 2009年第11期25卷 1881-1892页

作者： zhijian qiu school of mathematics,{4. university of finance and economics,chengdu 610074.P. R. China school of mathematics Southwestern University of Finance and Economics Chengdu 610074 P. R. China

In this paper, we investigate what are Carleson measures on open subsets in the complex plane. A circular domain is a connected open subset whose boundary consists of finitely many disjoint circles. We call a domain G multi-nicely connected if there exists a circular domain W and a conformal map ψ from W onto G such that ψ is almost univalent with respect the arclength on δW. We characterize all Carleson measures for those open subsets so that each of their components is multinicely connected and harmonic measures of the components are mutually singular. Our results suggest the extension of Carleson measures probably is up to this class of open subsets

关键词： Carleson measure circular domain harmonic measure multi-nicely connected domain

economic Growth Expectation Targets,Elastic Constraints,and High-Quality economic Development

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Frontiers of economics in China-Selected Publications from Chinese Universities 2024年第1期19卷 59-90页

作者： qiu Dongyang BAI Yuming school of economics and finance Chongqing University of TechnologyChongqing 400054China

Based on the panel data of 30 provinces(autonomous regions,municipalities)in China from 2006 to 2019,the empirical study finds that the target values of economic growth expectation can promote high-quality economic development,and there is an inverted U-shaped relationship between elastic target constraints and high-quality economic *** elastic constraints can reduce the investment rate and improve the total factor productivity(TFP),which promotes high-quality economic development,but its mediating effect accounts for a small *** the improvement of the marketization degree,the inhibiting effect of elastic constraints on high-quality economic development *** analysis of the heterogeneity between the new or old normal and the levels of economic development shows that in the future,developed regions should set high target values and low elastic constraints,and underdeveloped regions should set high elastic constraints on the target values of economic growth expectation.

关键词： economic growth expectation targets elastic constraints high-quality economic development

Comparative analysis of CO_(2)emissions and economic performance in the United States and China:Navigating sustainable development in the climate change era

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Geoscience Frontiers 2024年第5期15卷 239-255页

作者： Khalid Mehmood Syed Tauseef Hassan Xuchun qiu Shahid Ali Institute of Environmental Health and Ecological Security School of the Environment and Safety EngineeringJiangsu UniversityZhenjiangJiangsu 212013China Department of Trade and finance Faculty of Economics and ManagementCzech University of Life Sciences PragueKamycka 129PrahaZIP 16500Czechia school of economics and Management Anhui Polytechnic UniversityWuhu 241000China Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment Suzhou University of Science and TechnologySuzhou 215009China

economic growth has brought a global climate change into the spotlight,and CO_(2)emissions demonstrate significant challenges in reducing environmental shifts ***,the United States and China contribute the largest amount of CO_(2)*** purpose of this study is to examine the relationship between different types of CO_(2)emissions and economic growth by using a modeling *** analyze total CO_(2)emissions,coal CO_(2)emissions,oil CO_(2)emissions,the global share of coal CO_(2)emissions,the global share of oil CO_(2)emissions,and economic *** study provides unique insights into how to simultaneously reduce CO_(2)emissions and sustain economic growth.A bootstrap autoregressive distributed lag(BARDL)simulation method is utilized to examine the long-and short-run effects of predictors on CO_(2)*** CO_(2)emissions are found to have a significant positive effect on economic growth in the short run but a negative impact on economic growth over the long run in the United *** United States needs to implement stronger measures to balance coal CO_(2)emissions with economic growth for sustainable *** contrast,oil CO_(2)emissions have positive effect for China in both the long run and short ***,China can continue to reduce CO_(2)emissions from oil while maintaining positive economic *** China’s policies promoting cleaner energy alternatives can be adapted and implemented to maintain a balance between economic growth and carbon *** study has valuable insights for policymakers seeking to balance economic growth with carbon reduction *** emphasizes the need to better understand the complex relationship between CO_(2)emissions and economic growth.

关键词： CO_(2)emission Sustainable development Climate change United States China BARDL

The value of FinTech innovations for the finance industry:Evidence from China

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economic and Political Studies 2024年第1期12卷 1-19页

作者： Zhigang qiu Jianqiu Wang Ke Wu Sijie Yang school of finance Renmin University of ChinaBeijingChina school of finance Capital University of Economics and BusinessBeijingChina

This paper explores the value effects of FinTech innovations on the finance industry in China,focussing on the banking *** use a crawler-like application programme to grab patent filing information and manually identify and classify FinTech innovations based on their application *** patents generally bring adverse value effects to various finance sectors,revealing a competitive relationship between innovators and financial *** innovations applied to insurance and asset management cause the most harm to the industry,especially to state-owned and joint-stock commercial ***,disruptive FinTech innovations by start-up firms appear to pose more potential threats to commercial banks.

关键词： FinTech financial innovations China

On Pointwise Bounded Approximation

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Acta Mathematica Sinica,English Series 2009年第7期25卷 1217-1222页

作者： zhijian qiu school of mathematics Southwestern University of Finance and Economics Chengdu 610074 P. R. China

Let G be an open subset in the extended complex plane and let A（G） denote the algebra of all functions analytic on G and continuous on G. We call a domain multi-nicely connected if there is a circular domain W and a conformal map ~ from W onto G such that the boundary value function of φ is univalent almost everywhere with respect to the arclength on aW. Suppose that every component of G is finitely connected and none of the components of G have single point boundary components. We show that for every bounded analytic function on G to be the pointwise limit of a bounded sequence of functions in A（G）, it is necessary and sufficient that each component of G is multi-nicely connected and the harmonic measures of G are mutually singular. This generalizes the corresponding result of Davie for the case when the components of G are simply connected.

关键词： pointwise approximation harmonic measure Dirichlet algebra

数字经济对农村三次产业融合发展影响的实证检验

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统计与决策 2024年第5期40卷 67-72页

作者：邱书钦滕剑仑广西财经学院会计与审计学院南宁530003

数字经济作为中国经济发展的新动能,为促进农村三次产业融合发展提供了新的驱动力。文章首先从理论上阐述了数字经济对农村三次产业融合发展的影响机理,然后利用2011—2020年中国30个省份的面板数据,测算了数字经济发展水平和农村三次... 详细信息

数字经济作为中国经济发展的新动能,为促进农村三次产业融合发展提供了新的驱动力。文章首先从理论上阐述了数字经济对农村三次产业融合发展的影响机理,然后利用2011—2020年中国30个省份的面板数据,测算了数字经济发展水平和农村三次产业融合发展水平,实证分析了数字经济对农村三次产业融合发展的影响效应及作用机制。实证结果表明:数字经济对农村三次产业融合发展有显著的促进作用,这一结论在考虑了内生性问题以及一系列稳健性检验以后依然成立。异质性检验结果表明,西部地区农村三次产业融合发展获得的数字红利比东部及中部地区更加显著。技术创新和产业结构升级是数字经济促进农村三次产业融合发展的重要机制。基于此,各个地区应在进一步巩固数字经济发展红利的基础上,实施差异化发展战略,更好地促进农村三次产业融合发展。

关键词：数字经济农村三次产业融合发展

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Impacts and Adaptation: From the Points of View of Financial Management System in Enterprise Groups

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Impacts and Adaptation: From the Points of View of Financial...

经济增长统计的一个范本——阿吉翁《创造性破坏的力量:经济剧变与国民财富》述评

第十届国际制造工程与管理会议

作者： qiu Xiao-dong ZHAO Ping (school of economics & Management Tsinghua university Beijing 100084.China)

＜正＞ The integration of international economy dominated with the financial market leads to fierce competition. This requires firms implement modern corporate financial mechanism. From the view of the current situation of financial management in China, we demonstrates the differences in financial management between Chinese enterprises and international companies by describing detailed case studies of typical large enterprises in *** transform the enterprise management mechanism, the enterprise financial mechanism must be transformed accordingly. The basic ideas for its transformation and establishment include:1. Changing the managerial ideology, that is, completing the ideological change from the management of goods to the management of capital;2. Establishing a scientific organizational mechanism for financial management;3. Establishing a mechanism for scientific management, supervision and assessment;4. Training high-level financial management personnel with modern management knowledge;5. Dividing promotion center, distribution center, cost center and profit center in financial *** view of the above basic ideas and basic principles for the transformation and establishment of enterprise financial mechanism, we found that;the basic content that needs transformation in the theory of China’s traditional enterprise financial mechanism should include the content of finance main body, the content of financial objectives, the content of financial organizational structure and the content of environment for financial management. At the same time the following theories should be introduced, particularly the theories of capital time value, of risk in finance management and risk management, of the capital cost and capital structure, so as to establish a basic theoretical framework for the modern enterprise financial *** on the analyses, this paper discusses the impacts of economic globalization to Chinese large enterprises and their financial management

关键词： financial management enterprise group

来源： cnki会议评论

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统计与信息论坛 2024年第9期39卷 3-12页

作者：邱东郭同济江西财经大学统计与数据科学学院江西南昌330013

《创造性破坏的力量:经济剧变与国民财富》是法国著名经济学家阿吉翁等人于2020年出版的经济学力作。本文拟从以下十一个方面做一述评,其中,第一部分至第六部分主要是对阿吉翁等人书中经济增长统计的内容做摘要转述,第七部分至第十一部... 详细信息

《创造性破坏的力量:经济剧变与国民财富》是法国著名经济学家阿吉翁等人于2020年出版的经济学力作。本文拟从以下十一个方面做一述评,其中,第一部分至第六部分主要是对阿吉翁等人书中经济增长统计的内容做摘要转述,第七部分至第十一部分则以笔者的经济统计学评论为主。主要观点如下:第一,GDP数据内涵与纯市场理念下的定量分析研究实质上相悖,在全球化时代“国外账户”是宏观经济平衡核算不可或缺的项目集合;第二,全球生产链中不同“链位”国家受到的增长约束不同,新兴经济体面临的全球化绝对不是所谓的自由竞争的市场经济;第三,“创造性破坏”净效益的测度需要特别注意长期成本与短期成本、潜在成本与显在成本的充分比较;第四,经济统计学发展的失落从根本上看是由于经济学科群自身的结构性缺陷,只有树立避免“测度陷阱”的自觉意识,才能切实打破经济统计学科的“历史终结论”。

关键词：经济增长经济统计经济测度创造性破坏范式测度陷阱

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Impact of coupling coordination development of port and city environments on urban economic competitiveness:Evidence from the coastal port cities in eastern China

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Ecological Economy 2024年第1期20卷 53-71页

作者： LI Zhen-qiang YI Ying LI Jia-li YOU Xiao-yue ZHOU qiu-yang school of economics and Management Hunan Institute of Science and TechnologyYueyang 414006CHINA school of Urban and Regional Science Shanghai University of Finance and EconomicsShanghai 200433CHINA

Promoting the coupling coordination development of port and its hinterland city environments is an important way to improve urban economic *** on relevant data of 13 coastal port cities in eastern China from 2000 to 2018,this study explores the coupling coordination development of port and city environments and its impact on urban economic competitiveness by constructing the coupling coordination degree model and the panel threshold *** research results show that:(1)In terms of the coupling coordination development of port and city environments,most coastal ports and their hinterland cities are in a state of moderate or serious ***,the degree of coupling coordination of port and city environments needs to be further improved;(2)The coupling coordination degree of port and city environments has a significant impact on urban economic competitiveness,and this effect gradually increases with the development of the ports and the urban *** the variables that impact the urban economic competitiveness,fixed assets investment and foreign trade are significant factors that can enhance urban economic competitiveness.(3)At present,there is a“U-shaped”relationship between the coupling coordination degree of port-city environments and the urban economic *** relationship lies on the right side of the inflection point of the“U-shaped”***,following the concept of assigning priority to ecological development,expanding fixed assets investment and actively developing foreign trade can further enhance the urban economic competitiveness.

关键词： coastal ports city environments coupling coordination degree urban economic competitiveness threshold effect