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Does City Shape Affect China's Economic Development?

作者： JIANG Xiao-yan ZHANG Ji-long zou wei Chang Zhi-yuan

U/U of the environmental sample can indicate the existence of uranium irradiation,and even can be uesd to estimate the burnup of nuclear spent fuel.A study on the burnup estimation of irradiated uranium which was mixed with natural uranium was carried out by measuring the U/U and U/U in the samples by using MC-ICP-MS. According to the equation(1) and(2),a programme for calculating the burnup of the irradiated

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China & World Economy 2024年第1期32卷 21-56页

作者： wei zou Fei Yang Economics and Management School Wuhan UniversityChina

This paper constructs a general equilibrium spatial urban model and measures city geometric compactness using the patch-shape index based on evidence from satellite imagery and basic vector maps of *** adopts the ordinary least squares and instrumental variable approaches to examine the effect of city shape on the urban development of 279 Chinese cities at or above the prefecture *** empirical results show that there was a significant negative correlation between city shape and economic ***,every 1 percentage point increase in the patch-shape index led to a decrease in city-scale GDP by 0.009 percent,housing prices by 0.044 percent,and wages by 0.024 *** compact urban layouts attracted an inflow of households and firms,stimulated city economic growth,and were associated with increased housing prices and wage *** paper considers the cities'initial conditions,trends in population changes(expanding,shrinking,and stagnant cities),and geographic factors,and finds that the results are *** array of policy implications can be drawn from the research.

关键词： city footprint compactness economic development urban spatial shape

Viral-mediated gene therapy in pediatric neurological disorders

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World Journal of Pediatrics 2024年第6期20卷 533-555页

作者： Jing Peng wei-wei zou Xiao-Lei Wang Zhi-Guo Zhang Ran Huo Li Yang Department of Pediatrics Clinical Research Center for Chidren Neurodevelopmental disablities of Hunan ProvinceXiangya HospitalCentral South UniversityChangsha 410008China Reproductive Medicine Center Department of Obstetrics and Gynecologythe First Affiliated Hospital of Anhui Medical UniversityHefeiChina State Key Laboratory of Reproductive Medicine Nanjing Medical UniversityNanjingChina

Background Due to the broad application of next-generation sequencing,the molecular diagnosis of genetic disorders in pediatric neurology is no longer an unachievable ***,treatments for neurological genetic disorders in children remain primarily *** the other hand,with the continuous evolution of therapeutic viral vectors,gene therapy is becoming a clinical *** this perspective,we wrote this review to illustrate the current state regarding viral-mediated gene therapy in childhood neurological *** sources We searched databases,including PubMed and Google Scholar,using the keywords"adenovirus vector,""lentivirus vector,"and"AAv"for gene therapy,and"immunoreaction induced by gene therapy vectors,""administration routes of gene therapy vectors,"and"gene therapy"with"NCL,""SMA,""DMD,""congenital myopathy,""MPS""leukodystrophy,"or"pediatric metabolic disorders".We also screened the database of *** using the keywords"gene therapy for children"and then filtered the results with the ones aimed at neurological *** time range of the search procedure was from the inception of the databases to the *** We presented the characteristics of commonly used viral vectors for gene therapy for pediatric neurological disorders and summarized their merits and drawbacks,the administration routes of each vector,the research progress,and the clinical application status of viral-mediated gene therapy on pediatric neurological *** Viral-mediated gene therapy is on the brink of broad clinical ***-mediated gene therapy will dramatically change the treatment pattern of childhood neurological disorders,and many children with incurable diseases will meet the dawn of a ***,the vectors must be optimized for better safety and efficacy.

关键词： Gene therapy Neurological disorders Pediatrics Viral vectors

Supramolecular polymer-based gel fracturing fluid with a double network applied in ultra-deep hydraulic fracturing

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Petroleum Science 2024年第3期21卷 1875-1888页

作者： Yong-Ping Huang Yong Hu Chang-Long Liu Yi-Ning Wu Chen-wei zou Li-Yuan Zhang Ming-wei Zhao Cai-Li Dai School of Petroleum Engineering China University of Petroleum(East China)Qingdao266580ShandongPR China Shandong Key Laboratory of Oilfield Chemistry China University of Petroleum(East China)Qingdao 266580ShandongPR China SINOPEC Petroleum Exploration and Production Research Institute Beijing102206PR China CNOOC China Co Ltd Tianjin BranchTianjin300459PR China

A gel based on polyacrylamide,exhibiting delayed crosslinking characteristics,emerges as the preferred solution for mitigating degradation under conditions of high temperature and extended shear in ultralong *** viscosity/viscoelasticity of the fracturing fluid was required to maintain excellent proppant suspension properties before *** into account both the cost and the potential damage to reservoirs,polymers with lower concentrations and molecular weights are generally *** this work,the supramolecular action was integrated into the polymer,resulting in significant increases in the viscosity and viscoelasticity of the synthesized supramolecular polymer *** double network gel,which is formed by the combination of the supramolecular polymer system and a small quantity of Zr-crosslinker,effectively resists temperature while minimizing permeability damage to the *** results indicate that the supramolecular polymer system with a molecular weight of(268—380)×10^(4)g/mol can achieve the same viscosity and viscoelasticity at 0.4 wt%due to the supramolecular interaction between polymers,compared to the 0.6 wt%traditional polymer(hydrolyzed polyacrylamide,molecular weight of 1078×10^(4)g/mol).The supramolecular polymer system possessed excellent proppant suspension properties with a 0.55 cm/min sedimentation rate at 0.4 wt%,whereas the0.6 wt%traditional polymer had a rate of 0.57 cm/*** comparison to the traditional gel with a Zrcrosslinker concentration of 0.6 wt%and an elastic modulus of 7.77 Pa,the double network gel with a higher elastic modulus(9.00 Pa)could be formed only at 0.1 wt%Zr-crosslinker,which greatly reduced the amount of residue of the fluid after *** viscosity of the double network gel was66 m Pa s after 2 h shearing,whereas the traditional gel only reached 27 m Pa s.

关键词： Ultra-deep reservoir Gel fracturing fluid Double network Supramolecular polymer system Proppant suspension property

Acetylene/argon mixture plasma to build ultrathin carbon bridge of CF_(x)/C/MnO_(2) for high-rate lithium primary battery

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Rare Metals 2024年第6期43卷 2574-2584页

作者： Da-wei zou Xing-Guang Fu Gao-Bang Chen Yi-Fan Liu Bao-Shan Wu Xian Jian School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China Yangtze Delta Region Institute(Huzhou) University of Electronic Science and Technology of ChinaHuzhou 31300lChina

Forming an ultrathin conducting layer on a fluorinated carbon(CFx)surface for reducing severe electrochemical polarization in lithium/fluorinated carbon primary batteries(Li/CF_(x))remains a considerable challenge for achieving batteries with excellent rate ***,CFxwas modified by using acetylene/argon mixture plasma combined with MnO_(2)*** CF_(x)/C/MnO_(2)composite effectively reduced the voltage hysteresis and improved the electrochemical performance of Li/CF_(x).The excellent rate performance of CF_(x)/C/MnO_(2)was due to the high electrochemical activity provided by the atomicscale conductive carbon layer and ultrafine MnO_(2)*** with pristine CF_(x),the charge transfer resistance of the optimized CF_(x)/C/MnO_(2)decreased from 218.5 to 48.2Ω,the discharge rate increased from 2C to 10C,and the power density increased from 3.11 to 13.44 kW·g^(-1),The intrinsic reason for the enhanced rate performance was attributed to the fact that the ultrathin carbon layer acted as a conductive bridge to reduce the voltage hysteresis at the initial stage of the Li/CF_(x)discharge,and the high electrochemical activity of the ultrafine MnO_(2)particles provided a faster lithium-ion diffusion rate.

关键词： C_(2)H_(2)/Ar plasma Fluorinated carbon Lithium primary battery MnO_(2)

离散线性系统有限频域基于观测器的迭代学习控制

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控制与决策 2024年第5期39卷 1745-1753页

作者：邹伟沈艳霞江南大学物联网技术应用教育部工程研究中心江苏无锡214122

针对一类离散线性系统,在有限频域范围内研究基于观测器的迭代学习控制问题.首先,结合二维系统理论,构建由基于观测器的状态反馈和PID型前馈学习项组成的控制器;然后,借助于广义Kalman-YakubovichPopov (KYP)引理,将闭环系统有限频域性... 详细信息

针对一类离散线性系统,在有限频域范围内研究基于观测器的迭代学习控制问题.首先,结合二维系统理论,构建由基于观测器的状态反馈和PID型前馈学习项组成的控制器;然后,借助于广义Kalman-YakubovichPopov (KYP)引理,将闭环系统有限频域性能规范转换为相应的线性矩阵不等式(LMI),进而得到控制器和观测器存在的充分条件,同时,该条件也确保闭环控制系统的稳定性和跟踪误差单调收敛性;最后,通过桁架机器人系统的仿真,验证所提出设计方法的有效性.

关键词：迭代学习控制离散线性系统有限频域范围基于观测器的状态反馈广义KYP引理

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一回路注锌技术应用及注锌加药设备设计

核动力工程 2024年第2期45卷 203-206页

作者：邹伟林根仙孙云苏州热工研究院有限公司江苏苏州215000 国家核电厂安全及可靠性工程技术研究中心江苏苏州215000

一回路注锌技术的应用使得一回路设备表面生成的氧化膜更加稳定,起到降低机组集体剂量的作用。通过分析注锌对机组影响,结合国内某在运压水堆机组注锌目标浓度和现场设备存放条件,设计一套注锌加药设备,明确其设计方案、设备部件参数和... 详细信息

一回路注锌技术的应用使得一回路设备表面生成的氧化膜更加稳定,起到降低机组集体剂量的作用。通过分析注锌对机组影响,结合国内某在运压水堆机组注锌目标浓度和现场设备存放条件,设计一套注锌加药设备,明确其设计方案、设备部件参数和工作流程。该设备由溶液混合单元、过滤单元、加药单元及控制单元组成,实现机组运行期间添加醋酸锌和大修期间添加双氧水两种功能应用。

关键词：压水堆一回路注锌加药设备

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女性议价能力与家庭储蓄行为——基于中国家庭金融调查数据的研究

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劳动经济研究 2024年第1期12卷 57-82页

作者：邹薇尹文玺武汉大学经济与管理学院

高储蓄率是中国经济的一个突出特征。2010-2020年中国国民储蓄率呈现明显下降趋势,而同期女性议价能力则出现上升趋势。基于此本文构建了女性议价能力与家庭储蓄行为的理论模型,从家庭内部权力分布的视角分析中国国民储蓄率下降的原因... 详细信息

高储蓄率是中国经济的一个突出特征。2010-2020年中国国民储蓄率呈现明显下降趋势,而同期女性议价能力则出现上升趋势。基于此本文构建了女性议价能力与家庭储蓄行为的理论模型,从家庭内部权力分布的视角分析中国国民储蓄率下降的原因。本文使用2011-2019年五期中国家庭金融调查(CHFS)数据进行实证检验,研究结果表明女性议价能力的提升显著降低了家庭储蓄规模。女性议价能力作用于家庭储蓄行为的机制包括教育支出、社会网络以及移动支付。本文结论丰富了女性议价能力影响家庭储蓄决策的理论框架,提供了探讨国民储蓄率变化和制定关注家庭内部不平等、建立扩大内需长效机制公共政策的微观机制和证据支持。

关键词：家庭内部不平等女性议价能力家庭储蓄行为

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金融资产配置与中老年人口生活满意度

学习与实践 2024年第6期 93-106+2页

作者：邹薇张青苹武汉大学经济与管理学院

人口老龄化背景下，我国中老年人口金融资产配置与生活满意度的关联值得探究。基于中国健康与养老追踪调查微观数据的实证研究发现，存款等非风险性金融资产的增加对中老年群体生活满意度具有显著正向影响，而风险性金融资产和负债的增... 详细信息

人口老龄化背景下，我国中老年人口金融资产配置与生活满意度的关联值得探究。基于中国健康与养老追踪调查微观数据的实证研究发现，存款等非风险性金融资产的增加对中老年群体生活满意度具有显著正向影响，而风险性金融资产和负债的增加则会降低其生活满意度；影响程度随金融资产量、年龄组别、早期经历而具有异质性特征，且结论通过一系列稳健性检验。具体而言，中老年金融资产配置影响其生活满意度的直接效应占主导地位，间接效应传导途径包括健康状况、安全感和获得感，其中健康状况的贡献度最大。进一步研究表明，金融资产对中老年群体生活满意度的影响存在示范效应，而负债对生活满意度的影响既不存在示范效应、也不存在攀比效应；经济政策的不确定性对生活满意度有显著的负向影响。由此，增强中老年群体金融素养教育，加强对中老年群体健康的关注，提高中老年群体的安全感，加强中老年人口社会资本积累，以强化示范效应、保持宏观经济稳健运行。

关键词：老龄化金融资产配置生活满意度 KHB方法

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代际收入向上流动的长期估计与国际比较——兼论“了不起的盖茨比曲线”的理论机制与特征差异

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中国工业经济 2024年第7期 66-84页

作者：邹薇马瑞祺武汉大学经济与管理学院

代际收入向上流动性关系到社会创新活力、经济发展与收入分配的动态演进,然而既有文献对绝大多数发展中国家的代际收入向上流动性缺乏估计,难以全面分析和比较世界各经济体代际收入流动趋势及成因。本文基于一种不依赖于面板数据的Copul... 详细信息

代际收入向上流动性关系到社会创新活力、经济发展与收入分配的动态演进,然而既有文献对绝大多数发展中国家的代际收入向上流动性缺乏估计,难以全面分析和比较世界各经济体代际收入流动趋势及成因。本文基于一种不依赖于面板数据的Copula方法,结合世界不平等数据库提供的各经济体1980—2022年截面收入分布数据及部分国家1910—1970年历史数据,估计了全球125个经济体的代际向上流动率及趋势,并验证了本文所使用方法的准确性和稳健性。研究结果表明:改革开放以来,中国代际向上流动率处于国际高位且稳步增长,1980—1992年队列平均代际向上流动率约为86.16%,分别比世界平均水平、发达经济体和发展中经济体高出约23.62、20.29和24.62个百分点;美国、法国等代表性发达国家长期代际向上流动率整体呈倒U型趋势,第二次世界大战后队列的代际向上流动率持续下降;不同经济体的代际向上流动率趋势存在显著差异。进一步使用反事实分析,对典型国家1980年以来队列的代际向上流动率趋势进行分解,发现20世纪80年代以来的不平等加剧对代际向上流动率产生了负向影响。本文重新检验“了不起的盖茨比曲线”,发现与发达经济体相比,盖茨比曲线在发展中经济体相对平缓。本文总结了盖茨比曲线的形成机制,并从技能偏向型技术进步的激励效应视角阐释了盖茨比曲线在发展中经济体独特经验现象背后的成因。最后,本文提出了促进中国等发展中国家实现代际向上流动平稳持续增长的政策建议。

关键词：代际向上流动率 Copula方法反事实分析盖茨比曲线