检索结果-南通市图书馆

Geoscience Frontiers 2024年第4期15卷 494-504页

作者： Jianda Wang Kangyin Dong xiaohang ren School of International Trade and Economics University of International Business and EconomicsBeijing 100029China School of Business Central South UniversityChangsha 410083China

Digital financial inclusion(DFI)has the advantage of promoting information sharing,reducing transaction costs,and providing microloan platforms for small and medium-sized *** has also made outstanding contributions to decreasing CO_(2) ***,the volatility correlation between DFI and CO_(2) emissions is still relatively *** research uses the spatial autoregressive process with conditional heteroscedastic errors(SARspARCH)model to evaluate the spatial fluctuation spillover impacts of DFI on CO_(2) emissions in 284 Chinese cities covering the period 2011-2016 following the IPAT *** results indicate that CO_(2) emissions have significant spatial spillover and volatility *** fitted value of SARspARCH estimation results is more realistic than the SAR and spARCH *** alleviates average CO_(2) emissions in Chinese ***,spatial volatility weakens the negative influence of DFI on average carbon *** study provides insights from which governments can strengthen inter-regional communication and synergistic emission-reduction capabilities,and promote the digitization of the financial sector to achieve carbon neutrality goals.

关键词： SARspARCH model Spatial fluctuation spillover effect CO_(2)emissions Digital financial inclusion(DFI) China

Climate policy uncertainty and corporate investment:evidence from the Chinese energy industry

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Carbon Neutrality 2022年第1期1卷 439-449页

作者： xiaohang ren Yukun Shi Chenglu Jin School of Business Central South UniversityChangsha 410083HunanChina Adam Smith Business School University of GlasgowGlasgow G128QQUK School of Finance Zhejiang University of Finance and EconomicsHangzhou 310018China

In recent years,with the increasing attention paid to climate risks,the changes in climate policies are also more full of uncertainties,which have brought tremendous impact to economic entities,including *** the dynamic threshold model,this study investigates the nonlinear and the asymmetric effect of climate policy uncertainty on Chinese firm investment decisions with panel data of 128 Chinese energy-related companies from 2007 to *** empirical findings indicate that the influence of climate policy uncertainty on firm investment is significantly ***,climate policy uncertainty is not apparently related to corporate investments in the high-level range,while it negatively affects the investments in the low-level *** addition,to be more specific,the negative impact of climate policy uncertainty on the mining industry is tremendous,while the influence on the production and supply of electricity,heat,gas,and water sector is remarkably *** results of this study could help the company managers and policymakers to arrange appropriate related strategies under different climate policy conditions.

关键词： Dynamic threshold model Climate policy uncertainty Corporate investment

Green development and economic resilience:Evidence from Chinese resource-based cities

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Engineering Management 2024年第2期11卷 194-206页

作者： Zongrun WANG Xuxin CAO xiaohang ren School of Business Central South UniversityChangsha 410083China

Resource-based cities are currently facing challenges due to ecological pollution and an unbalanced industrial structure,which hinders sustainable economic *** focus on green development as a strategy for economic growth and environmental protection is becoming increasingly *** study employs a spatial econometric model to explore the effect of green development on economic resilience in Chinese resource-based cities from 2011 to 2019,revealing a positive correlation between green development and economic *** each 1 unit increase in green development,economic resilience increases by an average of 0.512 ***,the analysis of heterogeneity reveals differences in the factors influencing various resource-based *** addition,provincial green policies bolster economic resilience by encouraging green *** research aids in comprehending the balance between the economy and the environment.

关键词： economic resilience green development spatial econometric models resource-based cities

Innovation,financial permeation,and income inequality:From a dynamicperspective in China

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Management Science and Engineering 2024年第2期9卷 220-238页

作者： Xianming Sun Shiyi Xiao Ganlin Wang xiaohang ren School of Finance Zhongnan University of Economics and LawWuhan430073China Innovation and Talent Base for Digital Technology and Finance Wuhan430073China School of Business Central South UniversityChangsha410083China

Innovation is a driving force of wealth *** explore its time-varying effect on income inequality,we propose a nonparametric model using the local linear dummy variable estimation(LLDVE)*** on province-level panel data from China spanning from 2006 to 2020,we find that innovation initially reduces income disparity until 2009,then exacerbates it from 2013 to 2016,and alleviates inequality again over *** further verify that financial permeation serves as a catalyst in the inequitable income distribution driven by ***,this moderating effect reverses the relationship between green innovation and income *** suggests that we should enhance the financial service towards all aspects of innovation beyond its support of green innovation.

关键词： Income inequality Innovation Financial permeation Time-varying relationship Local linear dummy variable estimation(LLDVE)

Mn-doped SrCoO_(3-δ) Perovskite Oxides for Ethylene Production via Chemical Looping Oxidative Dehydrogenation of Ethane

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China Petroleum Processing & Petrochemical Technology 2024年第3期26卷 53-62页

作者： Li Zhi Liu Linjiao Hao Daijun ren xiaohang Shen Fangxia Li Xin Yu Anping Luoyang R&D Center of Technology of Sinopec Engineering(Group)Co.Ltd. Luoyang 471003China

Chemical looping oxidative dehydrogenation (CL-ODH) is an economically promising method for convertingethane into higher value-added ethylene utilizing lattice oxygen in redox catalysts, also known as oxygen carriers. Inthis study, perovskite-type oxide SrCoO_(3-δ) and B-site Mn ion-doped oxygen carriers (SrCo_(1-x)MnxO_(3-δ), x=0.1, 0.2, 0.3)were prepared and tested for the CL-ODH of ethane. The oxygen-deficient perovskite SrCoO_(3-δ) exhibited high ethyleneselectivity of up to 96.7% due to its unique oxygen vacancies and lattice oxygen migration rates. However, its low ethyleneyield limits its application in the CL-ODH of ethane. Mn doping promoted the reducibility of SrCoO_(3-δ) oxygen carriers,thereby improving ethane conversion and ethylene yield, as demonstrated by characterization and evaluation experiments.X-ray diffraction results confirmed the doping of Mn into the lattice of SrCoO_(3-δ), while X-ray photoelectron spectroscopy(XPS) indicated an increase in lattice oxygen ratio upon incorporation of Mn into the SrCoO_(3-δ) lattice. Additionally, H2temperature-programmed reduction (H2-TPR) tests revealed more peaks at lower temperature reduction zones and a declinein peak positions at higher temperatures. Among the four tested oxygen carriers, SrCo0.8Mn0.2O_(3-δ) exhibited satisfactoryperformance with an ethylene yield of 50% at 710 °C and good stability over 20 redox cycles. The synergistic effect of Mnplays a key role in increasing ethylene yields of SrCoO_(3-δ) oxygen carriers. Accordingly, SrCo0.8Mn0.2O_(3-δ) shows promisingpotential for the efficient production of ethylene from ethane via CL-ODH.

关键词： ethane ethylene perovskite chemical looping oxidative dehydrogenation

在线全文

学校读者我要写书评

暂无评论

数字普惠金融对居民消费的空间溢出效应研究

系统工程理论与实践 2022年第7期42卷 1770-1781页

作者：王雄黄云任晓航文凤华中南大学商学院长沙410083

近年来,数字普惠金融提升居民消费的作用越来越明显,而这种影响是否存在空间溢出效应,以及空间溢出效应有何规律性,都有待深入研究.为此,基于2011-2018年中国265个地级市的面板数据,本文从空间关联性角度对数字普惠金融影响居民消费的... 详细信息

近年来,数字普惠金融提升居民消费的作用越来越明显,而这种影响是否存在空间溢出效应,以及空间溢出效应有何规律性,都有待深入研究.为此,基于2011-2018年中国265个地级市的面板数据,本文从空间关联性角度对数字普惠金融影响居民消费的理论机制进行验证.实证结果表明:数字普惠金融能够有效释放居民消费潜力,并且具有较强的空间溢出效应;与西部地区相比,数字普惠金融对东中部地区居民消费水平的拉动作用和空间溢出效应更显著;相较于三四五线城市,数字普惠金融更能够拉动一二线城市居民消费的增加.

关键词：数字普惠金融居民消费城市动态空间面板模型

同方期刊数据库

考虑价格随机波动和季节效应的地下储气库价值模型

在线全文

学校读者我要写书评

暂无评论

天然气工业 2017年第1期37卷 145-152页

作者：王震任晓航杨耀辉张雨濛中国石油大学(北京)能源战略研究院

随着我国天然气需求量的快速增长,夏季低谷消费量和冬季高峰消费量之间相差数倍的现象更加明显,运用市场机制发挥地下储气库在天然气供应链中调峰作用的要求愈加迫切,对天然气价格市场化后的地下储气库进行价值评估具有重要的理论和现... 详细信息

随着我国天然气需求量的快速增长,夏季低谷消费量和冬季高峰消费量之间相差数倍的现象更加明显,运用市场机制发挥地下储气库在天然气供应链中调峰作用的要求愈加迫切,对天然气价格市场化后的地下储气库进行价值评估具有重要的理论和现实意义。为此,综合考虑我国天然气地下储气库的现状特点,有针对性地建立了考虑均值回复和季节效应的天然气价格模型,使得价格模型的季节波动趋势与中国现状相符;然后基于传统的天然气地下储气库价值模型,结合投资成本、运营成本和补贴等影响因素,并将投资成本和补贴均衡化到运营阶段,以便得到更精确的运营决策;最后通过数值模拟深入分析了国家天然气产业政策对地下储气库投资积极性的影响,以及地下储气库投资运营成本对企业地下储气库投资建设和运营的影响。进而依据上述研究结果,提出了推动我国地下储气库发展的建议:①推动地下储气库与管输分离并实现独立运营;②鼓励储气设施投资主体多元化;③进一步实现地下储气库的商业和金融功能,推动地下储气库商业模式的创新,发展地下储气库的套期保值等金融功能。

关键词：中国天然气价格地下储气库实物期权季节效应均值回复动态规划价格管制价值评估独立运营

经济政策不确定性、政治关联与企业投资效率--基于门槛效应的检验结果

在线全文

学校读者我要写书评

暂无评论

中南大学学报（社会科学版） 2022年第4期28卷 107-118页

作者：王雄苏冰倩任晓航中南大学商学院湖南长沙410083

以我国2004—2017年沪深A股上市公司为研究对象,运用面板门槛回归模型,实证分析经济政策不确定性对投资效率的门槛效应,并探讨政治关联对前述二者关系的影响。研究表明:经济政策不确定性对投资效率的影响呈现先促进后抑制的倒U型门槛效... 详细信息

以我国2004—2017年沪深A股上市公司为研究对象,运用面板门槛回归模型,实证分析经济政策不确定性对投资效率的门槛效应,并探讨政治关联对前述二者关系的影响。研究表明:经济政策不确定性对投资效率的影响呈现先促进后抑制的倒U型门槛效应;基于地区制度环境和产权性质的异质性分组检验发现,经济政策不确定性与投资效率之间仍存在门槛效应,且组间差异较大。进一步分析发现,在经济政策不确定性低门槛值区间内,存在政治关联的企业,经济政策不确定性对其投资效率的抑制作用更为突出;在高门槛值区间内,政治关联的作用则不显著。

关键词：经济政策不确定性政治关联投资效率门槛特征

气候变化如何影响金融系统性风险——来自极端气候事件和绿色(棕色)资产的双重证据

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

计量经济学报 2024年第4期4卷 1009-1030页

作者：王宗润牛娅鑫任晓航中南大学商学院长沙410083

本文研究了气候变化与中国金融系统性风险之间的关系.首先,本文以极端气候事件为切入点,测试了我国银行、证券与保险行业的系统性风险对极端气候灾害的反应速度,并评估了不同金融行业抵御极端气候灾害的能力,结果证实了部分极端气候事... 详细信息

本文研究了气候变化与中国金融系统性风险之间的关系.首先,本文以极端气候事件为切入点,测试了我国银行、证券与保险行业的系统性风险对极端气候灾害的反应速度,并评估了不同金融行业抵御极端气候灾害的能力,结果证实了部分极端气候事件可能会加剧金融系统性风险.其次,通过构建非线性自回归分布滞后(NARDL)模型,本文分析了绿色和棕色市场股票指数表现对金融子行业系统性风险的影响.结果显示,短期内棕色资产风险的提高及指数的降低会显著增加金融行业的系统性风险.但从长期来看,棕色资产指数上升会增加银行业系统风险,而绿色资产指数上升有助于降低证券业系统性风险,绿色资产风险的减少会显著降低银行业系统性风险.本文的研究不仅强调了应对气候灾害频率和严重程度增加的政策重要性,还提出对绿色和棕色行业实施差异化的金融审慎监管建议,以在降低物理风险的同时,最大限度地减少气候政策实施所带来的转型风险.这对于金融行业改善风险管理模式,降低物理风险与转型风险对金融系统性风险的冲击具有重大意义.

关键词：气候风险系统性风险极端气候绿色资产棕色资产

基于非均匀网格技术的山体周围不同位置处配网耦合雷电过电压快速计算研究

在线全文

学校读者我要写书评

暂无评论

电瓷避雷器 2020年第6期 59-63页

作者：王金芹任小航张建华云南电网有限责任公司瑞丽供电局云南瑞丽678600 南京能迪电气技术有限公司南京210000

架空线路往往存在于非平坦地表,比如周围存在山体,利用常规FDTD手段较难准确的计算出非平坦地表上架空线耦合雷电过电压问题。因此,笔者提出利用非均匀网格划分技术,在闪电通道、山体位置处采用较小的网格,在其余空间区域采用较大的网格... 详细信息

架空线路往往存在于非平坦地表,比如周围存在山体,利用常规FDTD手段较难准确的计算出非平坦地表上架空线耦合雷电过电压问题。因此,笔者提出利用非均匀网格划分技术,在闪电通道、山体位置处采用较小的网格,在其余空间区域采用较大的网格,同时对于山体-空气不同介质区域采用共形介质理论进行处理,不仅能避免计算耗时,同时能更精确的表达闪电通道、山体等情况,主要研究山体周围不同位置处配电线路耦合雷电过电压变化趋势,研究表明:建立的非均匀FDTD网格算法具有较好的精度;山体使架设其上的配电线路雷电过电压峰值增强44%;由于反射波的作用,山体对架设其附近的配电线路雷电过电压峰值增强2.7%;由于雷电电磁场及其架空线的相互作用,使架设峡谷的配电线路雷电过电压增强3倍。因此,在实际配网线路规划研究工作中,估算山区环境中架空输电线路上的感应过电压值并进行相关防雷设计时,必须要结合山体地形影响因子。

关键词：非均匀山体过电压 FDTD 峰值