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数字经济政策能否助推中小银行高质量发展——基于“轻量化”转型视角

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金融与经济 2024年第5期 24-34页

作者：王龑刘大志大连民族大学经济管理学院

以中国156家中小银行为样本,检验了省域数字经济政策供给对中小银行“轻量化”转型的影响。研究发现,数字经济政策可以推动中小银行“轻量化”转型,“提升中小银行数字化水平”的促进机制和“压缩中小银行净利差”的倒逼机制均发挥了作... 详细信息

以中国156家中小银行为样本,检验了省域数字经济政策供给对中小银行“轻量化”转型的影响。研究发现,数字经济政策可以推动中小银行“轻量化”转型,“提升中小银行数字化水平”的促进机制和“压缩中小银行净利差”的倒逼机制均发挥了作用。“资产规模小、杠杆水平高”的银行推进转型的动机较弱,“第二产业发达、金融业落后”省份的银行推进转型的难度较大,因而数字经济政策对其产生的助推作用较小。此外,活跃的技术交易市场有助于强化数字经济政策的助推作用;过度的金融监管则会抑制数字经济政策的助推作用。

关键词：银行转型商业银行渠道公平化信息公平化技术公平化

绿色研发促进“中国制造”全球价值链跃迁了吗?——来自出口质量视角多元协整分析的新证据

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兰州学刊 2024年第5期 35-49页

作者：郭然刘大志大连民族大学经济管理学院

全球价值链绿色化、低碳化发展趋势下,如何破局“中国制造”长期“嵌入”而非“主导”全球价值链中高端环节是我国贸易高质量发展面临的现实问题。文章以出口质量为切入点,基于WIOD发布的世界投入产出数据与中国制造业面板数据,借助多... 详细信息

全球价值链绿色化、低碳化发展趋势下,如何破局“中国制造”长期“嵌入”而非“主导”全球价值链中高端环节是我国贸易高质量发展面临的现实问题。文章以出口质量为切入点,基于WIOD发布的世界投入产出数据与中国制造业面板数据,借助多元协整分析、ECM模型及Granger因果检验方法,实证分析绿色研发对“中国制造”全球价值链跃迁的影响及作用机制。研究发现:绿色研发短期内不利于“中国制造”全球价值链跃迁,而在长期中绿色研发与“中国制造”全球价值链跃迁存在长期稳定的协整关系;出口产品质量是绿色研发促进“中国制造”全球价值链跃迁的重要传导机制,相比于低强度研发投入制造行业,绿色研发对高强度研发行业的全球价值链跃迁产生了更显著的促进作用;进一步借助非线性门槛协整模型发现,绿色研发与“中国制造”全球价值链跃迁呈U型关系,仅有绿色研发强度突破“门槛值”才有利于激发“中国制造”全球价值链跃迁,且在不同门槛区间内二者关系从“短期波动”向“长期均衡”调整的速度和方向存在显著差异。据此,应稳步提升绿色研发投入水平、完善相关研发政策并以“质量为先”为突破口实现“中国制造”全球价值链跃迁。

关键词：绿色研发制造业全球价值链跃迁出口产品质量多元协整分析 Granger因果分析

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天气雷达三体散射长钉回波特征分析

气象 2024年第6期50卷 675-685页

作者：孟蕾桑友伟夏扬高文娟刘达之中国气象局气象干部培训学院湖南分院长沙410125 气象防灾减灾湖南省重点实验室长沙410118 中国气象局气象干部培训学院北京100081

利用2016—2020年中国中东部地区47个强对流个例中50部S波段多普勒天气雷达的基本反射率因子产品资料,在筛选出2626个样本的基础上,分析三体散射长钉(TBSS)特征。结果表明:TBSS在1.5 km和5 km高度附近出现频次最高;在2.4°仰角出现频次... 详细信息

利用2016—2020年中国中东部地区47个强对流个例中50部S波段多普勒天气雷达的基本反射率因子产品资料,在筛选出2626个样本的基础上,分析三体散射长钉(TBSS)特征。结果表明:TBSS在1.5 km和5 km高度附近出现频次最高;在2.4°仰角出现频次最高。TBSS主要出现在雷达静锥区边缘至雷达径向距离210 km范围,在距离雷达115 km附近达到峰值;TBSS在雷达极坐标系中呈现南多北少、西多东少的形势;当对流风暴移动方向与雷达径向方向的夹角大于30°时有利于观测到TBSS。TBSS回波强度在起始端径向向外0~15 km范围内迅速降低至5 dBz,15 km之后在-5~10 dBz波动,TBSS区域中70%以上为低于25 dBz的弱回波;99%的TBSS长度小于40 km,不同长度的TBSS形态符合正态分布。TBSS出现频次和长度与强回波的中心最高值和区域面积没有显著相关关系。

关键词：三体散射长钉(TBSS) 天气雷达分布特征雷达回波冰雹

“义新欧”中欧班列能否促进产业结构升级?——基于浙江省县域视角

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大连民族大学学报 2024年第2期26卷 111-118,141页

作者：刘大志刘欣然高畅大连民族大学经济管理学院辽宁大连116650 浙江工商大学经济学院浙江杭州310018

产业结构升级既是经济发展的普遍规律,亦对于提升发展中国家的国际竞争力具有普遍指导意义。基于“义新欧”中欧班列开通准自然实验,选取浙江省53个县(市)2006-2021年的相关指标数据,使用DID模型检验“义新欧”中欧班列开通对县域产业... 详细信息

产业结构升级既是经济发展的普遍规律,亦对于提升发展中国家的国际竞争力具有普遍指导意义。基于“义新欧”中欧班列开通准自然实验,选取浙江省53个县(市)2006-2021年的相关指标数据,使用DID模型检验“义新欧”中欧班列开通对县域产业结构升级的影响及其作用机制。结果表明:“义新欧”中欧班列开通可以显著抑制浙江县域产业结构升级,“义新欧”中欧班列开通量每增加一个标准差会使浙江县域产业升级水平降低约5.4%,影响机制分析部分表明金融支持效应路径抑制浙江县域产业升级,而贸易开放效应路径促进浙江县域产业升级。

关键词：中欧班列县域 DID 产业结构

Multi-targeted anti-inflammatory drugs for the treatment of neurological disorders

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Neural Regeneration Research 2023年第4期18卷 805-806页

作者： Austin Lui Omar Alzayat Timothy Do David Perekopskiy Meghan Gann Taiseer Saad Elgokhy Jie Gao dazhi liu Department of Neurology University of California at DavisSacramentoCAUSA Department of Neuroscience The Ohio State UniversityColumbusOHUSA

Inflammation and kinase pathophysiology in neurological disorders:Inflammation is one of the common features of various acute and degenerative neurological disorders,such as stroke,traumatic brain injury(TBI),Alzheimer’s disease(AD),Parkinson’s disease(PD),and *** inflammatory responses are manifested as the synthesis of inflammation mediators,recruitment of leukocytes,and other secondary *** evidence shows that a large number of inflammation mediators(e.g.,thrombin,reactive oxygen species,cytokines,chemokines,and other molecules)are implicated in the pathophysiological processes in neurological disorders(liu and Ander,2012)(Figure 1).These increased inflammation mediators stimulate their downstream transmembrane receptors(e.g.,protease-activated receptors,cytokine receptors,and others),and further activate the intracellular downstream effector kinases,such as Src family kinase,Rho-associated protein kinase,Jun N-terminal kinase,extracellular signal-regulated kinase,cyclin-dependent kinase(CDK),and others(liu and Ander,2012)(Figure 1).Aside from overlapping in different neurological disorders,numerous inflammatory molecules and multiple kinase-involved signaling pathways can be linked to a single neurological disorder such as AD(Heneka et al.,2015).Because of their pivot roles in the process of inflammation,kinases have been regarded as anti-inflammatory targets to improve outcomes of neurological disorders.

关键词： neurological inflammation inflammatory

Accuracy evaluation for in-situ machining reference points binocular measurement based on credibility probability

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Chinese Journal of Aeronautics 2024年第1期37卷 472-486页

作者： Binchao YU Wei liu Yanze ZHANG dazhi MA Zhenyuan JIA Yi YUE Jiabo ZHANG Key Laboratory for Precision and Non-Traditional Machining Technology of the Ministry of Education Dalian University of TechnologyDalian 116024China Beijing Spacecrafts China Academy of Space TechnologyBeijing 100081China

Passive binocular measurement systems are being increasingly utilized in the in-situ industries of automobiles,aviation,and aerospace,*** to their excellent qualities of accuracy,efficiency,and cost *** the barrier of evaluating the accuracy of measured objects resulted from the unequal equivalent focal length and quantization of pixels,has limited their further development and application of high requirements for in-situ machining,e.g.,the measurement of machining reference points for the positioning of robotic drilling in aerospace *** this paper,an accuracy evaluation method is proposed to address the ***,the unequal equivalent focal length is considered to improve the accuracy of 3D ***,the credibility probability model is developed to calculate the probability of the observed error in the public view of the binocular measurement system and indicates the direction of ***,the in-situ experiment is carried out to validate the method within the effective public view range of 300 mm×300 *** experiment results show that the RMSs of observed errors are superior to 0.035 mm,and the credibility probabilities are all higher than 0.91;the maximum 3D reconstruction accuracy improvement is 60.3%,with the error reduced from 0.078 mm to 0.031 mm.

关键词： Aerospace manufacturing Binocular vision Credibility probability Pixel quantization Unequal equivalent focal length

Polyimide covalent organic frameworks as efficient solid-state Li^(+) electrolytes

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Science China Chemistry 2024年第5期67卷 1647-1652页

作者： Xu liu Shi Wang Siqi liu Chengfang liu Xiangchun Li Jian Wu dazhi Li Shihao Xu Chongyang liu Wen-Yong Lai State Key Laboratory of Organic Electronics and Information Displays(SKLOEID) Institute of Advanced Materials(IAM)School of Chemistry and Life SciencesNanjing University of Posts&TelecommunicationsNanjing 210023China

Covalent organic frameworks(COFs) are attractive porous crystalline materials with extremely high stability, easy functionalization, and open channels, which are expected to be unique ion conductors/transporters in lithium ion batteries(LIBs). Despite recent advances, low ion conductivity and low transference number, resulting in low charging/discharging rate, low energy density, and short battery life, are the main issues that limit their direct application as solid electrolytes in LIBs. Here, we designed and synthesized a novel polyimide COF, namely, TAPA-PDI-COF, with abundant C=O groups, which has been successfully employed as high-performance solid electrolytes by doping TAPA-PDI-COF and succinonitrile(SN). Both the well-defined nanochannels of COFs and SN confined in the well-aligned channels restricted the free migration of anions, while C=O on COFs and CN groups of SN enhanced Li^(+) transport, thus achieving a high ion conductivity of 0.102 m S cm^(-1)at 80 °C and a high lithium-ion transference number of 0.855 at room temperature. According to density functional theory(DFT)calculations, Li-ion migration mainly adopted in-plane transport rather than the axial pathway, which may be due to the shorter hopping distances in the planar pathway. The results suggest an effective strategy for the design and development of all-solidstate ionic conductors for achieving high-performance LIBs.

关键词： lithium ion batteries(LIBs) covalent organic frameworks(COFs) solid-state ion conductors solid-state electrolytes ion conductivity

应计利润分离模型的效力检验——基于中国资本市场的实证研究

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中南财经政法大学学报 2011年第1期 85-91页

作者：刘大志东北财经大学会计学院辽宁大连116025 辽东学院会计学院辽宁丹东118001

应计利润分离法是盈余管理研究中常用的方法,本文使用2006年新准则颁布后的中国资本市场数据,对研究中常用的四种应计利润分离模型进行了效力检验。这四种模型分别是基本Jones模型、修正Jones模型、业绩匹配Jones模型和非线性Jones模型... 详细信息

应计利润分离法是盈余管理研究中常用的方法,本文使用2006年新准则颁布后的中国资本市场数据,对研究中常用的四种应计利润分离模型进行了效力检验。这四种模型分别是基本Jones模型、修正Jones模型、业绩匹配Jones模型和非线性Jones模型。研究发现:无论是综合样本估计还是分行业样本估计,四种模型的拟合性都较好,但业绩匹配Jones模型和非线性Jones模型的表现更为突出;分年度、分行业样本估计的效果要优于综合样本估计;操控性应计利润的盈余持续性检验结果说明四种被检验模型都能有效地揭示盈余管理;二项检验结果显示,基本Jones模型、业绩匹配Jones模型和非线性Jones模型犯第一类错误的频率较高,容易夸大盈余管理。综合比较而言,在中国资本市场上,修正Jones模型设定较优。

关键词：盈余管理应计利润基本Jones模型修正Jones模型业绩匹配Jones模型非线性Jones模型

Non-crossing Quantile Regression Neural Network as a Calibration Tool for Ensemble Weather Forecasts

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Advances in Atmospheric Sciences 2024年第7期41卷 1417-1437页

作者： Mengmeng SONG dazhi YANG Sebastian LERCH Xiang'ao XIA Gokhan Mert YAGLI Jamie M.BRIGHT Yanbo SHEN Bai liu Xingli liu Martin Janos MAYER School of Electrical Engineering and Automation Harbin Institute of TechnologyHarbin150001China Heidelberg Institute for Theoretical Studies Schloss-Wolfsbrunnenweg 3569118HeidelbergGermany Chair of Statistical Methods and Econometrics Karlsruhe Institute of Technology(KIT)Bluecherstr.1776185KarlsruheGermany Key Laboratory of Middle Atmosphere and Global Environment Observation Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing100029China Solar Energy Research Institute of Singapore(SERIS) National University of Singapore(NUS)Singapore117574Singapore UK Power Networks LondonSE61NPUK China Meteorological Administration Beijing100081China Heilongjiang Meteorological Bureau Harbin150001China Department of Energy Engineering Faculty of Mechanical EngineeringBudapest University of Technology and EconomicsMűegyetem rkp.3H-1111BudapestHungary

Despite the maturity of ensemble numerical weather prediction(NWP),the resulting forecasts are still,more often than not,*** such,forecast calibration tools have become *** those tools,quantile regression(QR)is highly competitive in terms of both flexibility and predictive ***,a long-standing problem of QR is quantile crossing,which greatly limits the interpretability of QR-calibrated *** this point,this study proposes a non-crossing quantile regression neural network(NCQRNN),for calibrating ensemble NWP forecasts into a set of reliable quantile forecasts without *** overarching design principle of NCQRNN is to add on top of the conventional QRNN structure another hidden layer,which imposes a non-decreasing mapping between the combined output from nodes of the last hidden layer to the nodes of the output layer,through a triangular weight matrix with positive *** empirical part of the work considers a solar irradiance case study,in which four years of ensemble irradiance forecasts at seven locations,issued by the European Centre for Medium-Range Weather Forecasts,are calibrated via NCQRNN,as well as via an eclectic mix of benchmarking models,ranging from the naïve climatology to the state-of-the-art deep-learning and other non-crossing *** and stringent forecast verification suggests that the forecasts post-processed via NCQRNN attain the maximum sharpness subject to calibration,amongst all ***,the proposed conception to resolve quantile crossing is remarkably simple yet general,and thus has broad applicability as it can be integrated with many shallow-and deep-learning-based neural networks.

关键词： ensemble weather forecasting forecast calibration non-crossing quantile regression neural network CORP reliability diagram post-processing