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Does the housing provident fund cause housing inequality?The micromechanism and macroeffect in China 被引量:1
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作者 Anquan Zhang Lu Liu 《Financial Innovation》 2025年第1期3037-3064,共28页
This study explores the housing distribution effect of the Housing Provident Fund(HPF)system on households.Utilizing data from the China Household Finance Survey conducted in 2013,2015,2017,and 2019,this study empiric... This study explores the housing distribution effect of the Housing Provident Fund(HPF)system on households.Utilizing data from the China Household Finance Survey conducted in 2013,2015,2017,and 2019,this study empirically investigates this effect from two dimensions:the impact of HPF payments on household income and housing loan behavior,and the impact on the Gini coefficient of housing assets within the group.The results indicate that the HPF payment does not significantly impact household income levels.Instead,it increases their likelihood of obtaining housing loans,particularly for middle-income households.Additionally,for any group of families,the HPF payment decreased the housing Gini coefficient among households by approximately 0.11 units.This study may be the first to provide the most direct empirical evidence on the extent of HPF’s impact on housing inequality within a group.It also questions the inference in the literature that“HPF will aggravate housing inequality within the group.”Based on this study’s findings,we expect that housing inequality will continue to be alleviated with continued HPF implementation.In particular,this effect will be more significant if the credit support for lowincome families to purchase houses through the HPF can be further enhanced. 展开更多
关键词 Housing provident fund(HPF) Income effect Credit effect Housing inequality CHFS
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Importance of portfolio optimization in SRI and conventional pension funds
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作者 Mercedes Alda 《Financial Innovation》 2025年第1期2242-2278,共37页
This study assesses the portfolio concentration of socially responsible investment(SRI)pension funds,which may be subject to a potentially limited asset universe and have a higher concentration and lower performance t... This study assesses the portfolio concentration of socially responsible investment(SRI)pension funds,which may be subject to a potentially limited asset universe and have a higher concentration and lower performance than conventional funds.Nonetheless,in contrast to previous studies on SRI funds,this study considers the informationadvantage theory,positing that skilled managers should increase their concentration in assets in which they possess valuable information,departing from optimization models to achieve outperformance.This study first compares actual fund concentration with concentration obtained from several traditional and modern portfolio optimization techniques(minimum variance,global minimum variance,optimal portfolio,naïve diversification,risk parity,and reward-to-risk timing)to understand whether SRI pension funds concentrate portfolios and deviate from optimization model solutions.Unlike previous studies,the actual fund assets are considered in the optimization models to take into account the real investment profiles of SRI funds.The results indicate that SRI pension funds are less concentrated than conventional funds,and SRI and conventional pension funds largely diversify their portfolios,presenting lower concentration than portfolios formed with the optimization models.Furthermore,concentration strategies positively influence performance in SRI and conventional funds,revealing the use of information advantage.However,SRI and conventional fund managers present poor skills(picking,timing,and trading)to exploit information advantages due to overconfidence issues,which affect performance with concentration strategies.This situation may be modified if SRI funds follow modern optimization models and conventional funds follow traditional optimization models,improving managers’performance and skills. 展开更多
关键词 CONCENTRATION Managerial skill Pension fund Portfolio optimization SRI
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How research funding shapes academic outputs:Evidence from communication research paper characteristics and thematic trends in China
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作者 Jean J.Wang Shu Wei Fred Y.Ye 《Journal of Data and Information Science》 2025年第4期122-145,共24页
Purpose:To explore how different types of research funding affect research papers,with implications for optimizing funding policies and promoting sustainable research development.Design/methodology/approach:We used so... Purpose:To explore how different types of research funding affect research papers,with implications for optimizing funding policies and promoting sustainable research development.Design/methodology/approach:We used social network analysis and citation analysis to compare the influence of funded and non-funded papers,as well as among different funding types.Multidimensional scaling and cohesive subgroup analysis revealed thematic differences.Findings:Funded papers do not always show higher academic influence than non-funded ones,but multifunded papers perform better than single-funded ones.Papers funded by international institutions and HKMT have a greater impact on the international academic community.Funded papers emphasize innovation and interdisciplinarity;non-funded papers focus more on classical theory application.Research limitations:This study used only the WoS Core Collection,potentially missing other funding sources.Practical implications:The findings inform the refinement of funding policies and support strategies that encourage impactful and innovative research.Originality/value:This study offers a multi-level empirical analysis of how funding shapes research influence and thematic trends. 展开更多
关键词 funding support Co-occurrence network Cohesive subgroup Multidimensional scale Influence
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A novel fuzzy decision‑making approach to pension fund investments in renewable energy
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作者 Serhat Yüksel Serkan Eti +3 位作者 Hasan Dinçer Hasan Meral Muhammad Umar Yaşar Gökalp 《Financial Innovation》 2025年第1期309-332,共24页
Pension fund must consider some significant issues when making renewable energy project investment decisions.It is necessary to determine the most important factors and prioritize the indicators.Accordingly,the purpos... Pension fund must consider some significant issues when making renewable energy project investment decisions.It is necessary to determine the most important factors and prioritize the indicators.Accordingly,the purpose of this study is to conduct a priority analysis of the determinants of investment in renewable energy projects by pension funds.This study constructs a novel fuzzy decision-making model.First,five indicators for this process are weighted using an entropy methodology based on sine trigonometric Pythagorean fuzzy sets.The CRITIC methodology is also considered to make a comparative evaluation.Second,five different clean energy investment alternatives for pension funds are ranked using the RATGOS methodology.Similarly,this ranking analysis is also made by considering TOPSIS technique to check the reliability of the results.The main contribution of this study is the creation of a new and comprehensive fuzzy decision-making model to identify the most important factors in renewable energy project investments for pension funds.The proposed model uses the RATGOS technique to rank clean energy investment alternatives for pension funds.By considering the geometrical mean in the RATGOS calculation process,criticisms related to existing ranking techniques can be overcome.The use of sine trigonometric Pythagorean fuzzy numbers provides significant benefits to the quality of the proposed decision-making model.The defuzzification process can be implemented appropriately using these sets.Therefore,this study’s findings pave the way for investors to make investment decisions under these circumstances.It is concluded that the most important criterion is risk minimization.Effective regulations are another critical issue.Furthermore,the ranking results indicate that the most suitable renewable energy alternative is green bonds.The comparative results with STPFY-TOPSIS show that the proposed model generates coherent and reliable findings. 展开更多
关键词 Pension funds Financial innovation Energy investments Clean energy
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Research on the Sustainability Risk and Countermeasures of Pension Fund under Negative Population Growth
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作者 Ma Mengze 《Journal of Humanities and Nature》 2025年第2期20-28,共9页
This study examines the sustainability of China's pension funds in a context of negative population growth,analyzing how demographic shifts,economic fluctuations,and institutional flaws impact fund operations.The ... This study examines the sustainability of China's pension funds in a context of negative population growth,analyzing how demographic shifts,economic fluctuations,and institutional flaws impact fund operations.The research reveals that declining working-age populations and accelerating aging are causing imbalances in fund revenues and expenditures.Slower economic growth and inflation further erode contribution capacity and investment returns,while the drawbacks of the Pay-as-you-go system and provincial-level pooling models exacerbate regional risks.Pension funds face multiple challenges including revenue-expenditure imbalances,investment volatility,systemic design flaws,and population mobility-induced risks.The study proposes comprehensive optimization strategies encompassing population structure improvement,diversified funding channels,expenditure control,enhanced investment management,and institutional reforms.These measures aim to provide theoretical and practical references for addressing the sustainability challenges of pension funds under negative population growth. 展开更多
关键词 Negative Population Growth Pension fund SUSTAINABILITY Income Balance System Optimization
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Does a non‑performing assets disposal fund help control systemic risk?Evidence from an interbank financial network in China
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作者 Lei Song Yu Chen 《Financial Innovation》 2025年第1期1490-1534,共45页
The COVID-19 pandemic precipitated a surge in the non-performing assets held by financial institutions,elevating systemic risk in financial networks.Therefore,developing strategies to alleviate this risk,with a focus ... The COVID-19 pandemic precipitated a surge in the non-performing assets held by financial institutions,elevating systemic risk in financial networks.Therefore,developing strategies to alleviate this risk,with a focus on non-performing assets,has become a research area of interest.Supported by policies related to the Chinese insurance market,this study proposes the establishment of a non-performing assets disposal fund backed by insurance capital.This fund will invest in the non-performing assets of financial institutions with the aim of mitigating systemic risk.Using a linear threshold model,we identify an asymptotically optimal scheme for disposing of nonperforming assets.Additionally,we construct a payment model integrated with nonperforming assets,from which we derive an optimal payment and clearing strategy.Our research also proposes a robust set of criteria to assist regulators in determining whether to use the non-performing assets disposal fund.To demonstrate the efficacy of the fund in reducing systemic risk,we conduct simulations and analyze data from the Chinese interbank financial network.Through this rigorous analysis,we confirm the role of the fund in enhancing the stability of the financial system. 展开更多
关键词 Systemic risk Financial network Non-performing assets disposal fund Risk analysis Stress testing
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The dynamic linkage between fintech venture capital funding,bank credit flows,and equity market movement:evidence from a global perspective
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作者 Uttam Golder Suborna Barua 《Financial Innovation》 2025年第1期3475-3531,共57页
This study examines the causal relationship between financial technology startup venture capital(VC)financing and its deals with domestic credit provided by the banking sector and equity market movement.Despite the ri... This study examines the causal relationship between financial technology startup venture capital(VC)financing and its deals with domestic credit provided by the banking sector and equity market movement.Despite the rise of alternative finance,such as fintech venture capital(it is the fund that venture capital firms put into young,promising fintech companies so that they can help them expand and scale quickly),which is yet underexplored,borrowers still heavily rely on banks and the stock market for financing.We use panel data from 57 countries from 2010 to 2020 and an advanced econometric method called the cross-sectional autoregressive distributed lag model(CS-ARDL)to determine how the size and number of fintech equity funds dealt with by venture capital firms,banking sector credit,and stock market returns are interrelated at the global level and across regional,income,and economic levels.Our results reveal a cointegrating relationship between fintech venture capital funding and deals with bank loans and equity market returns.However,this relationship varies across the regions studied and between developed and developing economies.Our findings provide crucial guidelines for policymakers to create policies that support balanced financial development by highlighting the global interaction of equity market movements,banking credit,and fintech venture capital investment and lay the groundwork for internationally aligned policies to guarantee the optimal distribution of financial capital and improve economic stability and adaptability by illustrating how these links differ across geographical locations and economic conditions. 展开更多
关键词 Fintech venture funding Bank credit flows Equity market return CS-ARDL
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Distribution and imbalance of basic research funding in environmental chemistry in China
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作者 Weiyi Wang Qian Liu +1 位作者 Guibin Jiang Qiankun Zhuang 《Journal of Environmental Sciences》 2025年第9期267-277,共11页
This study investigates the distribution and imbalances of research funding in the field of Environmental Chemistry,utilizing application and funding data fromthe National Natural Science Foundation of China(NSFC)over... This study investigates the distribution and imbalances of research funding in the field of Environmental Chemistry,utilizing application and funding data fromthe National Natural Science Foundation of China(NSFC)over the past decade.The findings reveal significant regional disparities,with Eastern regions receiving over 70%of the national funding,while the Northeast accounts for only 4%to 6.5%.Additionally,the analysis shows notable differences in funding allocation among various research institutions,with a substantial portion of funds concentrated in a few leading institutions,leading to inequities across different types and levels of organizations.The impact of applicant gender on funding disparities is relatively minor;although female applicants have a slightly lower funding rate,the concentration of funds is marginally higher among females.Furthermore,the study highlights that key projects and talent-oriented initiatives,due to their significant funding concentration,exacerbate the existing imbalances.Overall,this research provides valuable insights for optimizing funding policies and advocates for a more equitable distribution of resources in Environmental Chemistry research,addressing the identified disparities. 展开更多
关键词 Scientific fund National natural science foundation of China Environmental chemistry POLICY Regional imbalance
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The Role of Rural Revitalization Investment Funds in Advancing Common Prosperity: Mechanisms, Challenges, and Strategies
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作者 Ruihuan Wang 《Proceedings of Business and Economic Studies》 2025年第1期50-54,共5页
The Rural Revitalization Investment Fund serves as a crucial financial instrument for advancing rural revitalization and promoting common prosperity.It aims to address financing and land-use challenges faced by rural ... The Rural Revitalization Investment Fund serves as a crucial financial instrument for advancing rural revitalization and promoting common prosperity.It aims to address financing and land-use challenges faced by rural industries through financial support while fostering coordinated industrial development.The fund primarily operates through equity direct investment and the“mother fund+direct investment”model,with an increasing emphasis on combining government guidance with social capital participation.However,challenges persist,including a shortage of professional talent,insufficient institutional innovation,and weak industrial foundations in rural areas.To enhance the fund’s effectiveness,it is recommended to strengthen professional team management,clearly define its strategic positioning,implement strict supervision,innovate operational mechanisms,and prioritize environmental and social responsibility.These measures will ensure that the fund contributes to rural revitalization while promoting sustainable development and common prosperity. 展开更多
关键词 Rural revitalization investment fund Financial support Common prosperity
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Personalized fund recommendation with dynamic utility learning
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作者 Jiaxin Wei Jia Liu 《Financial Innovation》 2025年第1期1558-1584,共27页
This study introduces a fund recommendation system based on the ε-greedy algorithm and an incremental learning framework.This model simulates the interaction process when customers browse the web-pages of fund produc... This study introduces a fund recommendation system based on the ε-greedy algorithm and an incremental learning framework.This model simulates the interaction process when customers browse the web-pages of fund products.Customers click on their preferred fund products when visiting a fund recommendation web-page.The system collects customer click sequences to continually estimate and update their utility function.The system generates product lists using the ε-greedy algorithm,where each product on the list has the probability of 1-ε of being selected as an exploitation strategy,and the probability of ε is chosen as the exploration strategy.We perform a series of numerical tests to evaluate the estimation performance with different values of ε. 展开更多
关键词 Personalized fund recommendation ε-greedy algorithm Dynamic utility learning
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"Faxian-Xuanzang Scholarship Fund"Officially Launched in Nepal
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《International Understanding》 2025年第2期63-63,共1页
The inaugural"Belt and Road Nepal-China Buddhist Culture and Art Summit Forum"was held at the Lumbini Buddhist University in Nepal.The"Faxian-Xuanzang Scholarship Fund",jointly established by the C... The inaugural"Belt and Road Nepal-China Buddhist Culture and Art Summit Forum"was held at the Lumbini Buddhist University in Nepal.The"Faxian-Xuanzang Scholarship Fund",jointly established by the Chinese Culture Promotion Society and the Lumbini Buddhist University,was officially launched during the forum.The programme aims to support 100 Chinese and Nepali students in the next three years in conducting specialised research in such fields as Buddhist art and historical scripts. 展开更多
关键词 chinese culture promotion society Lumbini Buddhist University Nepal China Buddhist Culture Art Summit Forum buddhist art historical scripts Belt Road Buddhist Art nepali Faxian Xuanzang Scholarship fund
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Comparison of sectorial and financial data for ESG scoring of mutual funds with machine learning
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作者 Inigo Martin‑Melero Raul Gomez‑Martinez +1 位作者 Maria Luisa Medrano‑Garcia Felipe Hernandez‑Perlines 《Financial Innovation》 2025年第1期2403-2433,共31页
Recently,funds and corporations have adopted environmental/social/governance(ESG)-related criteria as increasingly important criteria when evaluating investments.The ESG scores of mutual funds,which pool money from ma... Recently,funds and corporations have adopted environmental/social/governance(ESG)-related criteria as increasingly important criteria when evaluating investments.The ESG scores of mutual funds,which pool money from many individuals,are,therefore,significant as a sign of social commitment and deliver long-term results for investors deciding in which fund to invest.However,this scoring process is not transparent,and computing ESG scores requires an extensive review and monitoring of accountancy data.In this study,Machine Learning(ML)was employed to predict six ESG scores of 3192 mutual funds by comparing the performance of the models built solely using 13 variables of ESG-controversial sectorial involvement and 37 variables of financial data.In both cases,three classification and three regression algorithms were applied to the 72 simulations.The results demonstrate an acceptable fit of the Random Forest and Gradient Boosting algorithms in regression exercises(R2 values of 60–80%)and good prediction capabilities for classification(accuracies of approximately 70–80%).The models obtained similar performance when predicting ESG scores either from financial data or ESG-controversial sectorial involvement,illustrating how financial variables are good predictors of ESG scores as data on direct involvement in non-ESG funds’activities.Thus,a relationship between the financial performance of a fund and its ESG score exists and is predictable by ML,saving time and resources. 展开更多
关键词 Corporate finance(G30) Mutual funds(F21) Artificial intelligence(O30) Machine learning(Q55) ESG(Q56)
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科学基金成果的管理与传播研究
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作者 王冬梅 冯勇 +9 位作者 朱明皓 丁华 刘畅 张耀月 石顺伟 肖一雄 杨文旭 张高明 杨旭 朱云伟 《中国科学基金》 北大核心 2026年第1期189-198,共10页
国家自然科学基金成果的科学共享与管理对推动科学进步、增强公众科学素养以及增强科研人员之间的交流与合作具有重要意义。本研究对科研人员们开展了问卷调研,共收集到870份有效问卷,并对获取科学基金成果数据的现状及困难进行了分析,... 国家自然科学基金成果的科学共享与管理对推动科学进步、增强公众科学素养以及增强科研人员之间的交流与合作具有重要意义。本研究对科研人员们开展了问卷调研,共收集到870份有效问卷,并对获取科学基金成果数据的现状及困难进行了分析,随后基于K-means方法,对10个不同类别的科学基金项目成果进行了聚类分析。结果显示,采用“关键词和信息”对成果进行刻画有助于提升成果的共享与管理。结合从业人员的访谈,本研究提出以下建议:(1)加强成果共享传播的培训和指导,建立多元化的共享传播渠道;(2)提供更多的共享传播资源,支持研究人员进行有效成果共享传播;(3)建议注重政策法规体系的完善性、协调性和一致性,坚持与国际组织的共同理念接轨。 展开更多
关键词 科学基金 基金成果 数据管理 数据共享
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考虑协偏度的基金业绩评价研究
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作者 王鹏 陈琪 梁鑫垚 《证券市场导报》 北大核心 2026年第1期56-69,共14页
协偏度度量一项资产对市场尾部风险的贡献,是一种重要的系统性风险,亦是资产定价中的重要变量之一。在基金管理中,基金经理可通过投资负协偏度资产来承担协偏度风险,进而获取协偏度风险溢价。为此,在评价基金业绩时有必要将协偏度风险... 协偏度度量一项资产对市场尾部风险的贡献,是一种重要的系统性风险,亦是资产定价中的重要变量之一。在基金管理中,基金经理可通过投资负协偏度资产来承担协偏度风险,进而获取协偏度风险溢价。为此,在评价基金业绩时有必要将协偏度风险溢价从基金Alpha收益中区分出来,以免误判基金经理获得超额收益的能力。本文构建能捕捉未来协偏度风险的前瞻协偏度因子,将其引入传统多因子模型,并基于2004—2023年我国开放式权益型基金样本,检验协偏度对基金业绩的影响。结果表明:(1)前瞻协偏度因子对基金收益具有显著的解释力,以Fama-French五因子模型为例,协偏度因子对基金收益的解释力仅次于市场因子和价值因子。(2)价值型基金规避了协偏度风险,在考虑协偏度因素后获得业绩奖励,基金业绩明显改善;中小盘基金承担了更多协偏度风险,在考虑协偏度因素后获得业绩惩罚,基金业绩显著下降。(3)基金的协偏度策略具有持续性,前期承担较大协偏度风险的基金,在后期仍然会承担较高的协偏度风险。(4)协偏度风险较高的基金往往更年轻、管理费率更高、持有的资产更缺乏流动性、机构投资者的持有比例更低。本文拓展了基金业绩评价的相关研究,为基金公司构建更科学的评价体系、投资者做出合理投资决策提供了参考。 展开更多
关键词 协偏度 权益型基金 基金业绩 因子模型
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2025年度工程地质领域自然科学基金项目受理与资助分析
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作者 刘羽 郑袁明 +2 位作者 王东坡 黄元耕 王力 《工程地质学报》 北大核心 2026年第1期442-448,共7页
本文聚焦国家自然科学基金委员会地球科学部地质学学科(D02)与环境地球科学学科(D07)管理的工程地质领域,围绕其2个二级申请代码(D0214工程地质学、D0705灾害地质与工程环境),对2025年度国家自然科学基金面上项目、青年科学基金项目(含... 本文聚焦国家自然科学基金委员会地球科学部地质学学科(D02)与环境地球科学学科(D07)管理的工程地质领域,围绕其2个二级申请代码(D0214工程地质学、D0705灾害地质与工程环境),对2025年度国家自然科学基金面上项目、青年科学基金项目(含A类、B类、C类)、地区科学基金项目、重点项目等各类项目的申请、受理、评议、资助情况,以及研究队伍构成、热点特征等内容进行了系统介绍与深入分析。 展开更多
关键词 工程地质 工程地质环境与灾害 自然科学基金 受理资助
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基于三方博弈的高等职业教育经费投入演化模型及策略分析
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作者 姚林香 车文军 杨蕾 《职业技术教育》 北大核心 2026年第3期66-73,共8页
教育经费投入是推动高等职业教育高质量发展的内在要求和关键因素,是实现中国式高等职业教育现代化的有力支撑。政府、学校、社会作为高等职业教育经费投入主体,三者之间利益关系的均衡和协同是保障教育经费投入充足的基础。通过构建演... 教育经费投入是推动高等职业教育高质量发展的内在要求和关键因素,是实现中国式高等职业教育现代化的有力支撑。政府、学校、社会作为高等职业教育经费投入主体,三者之间利益关系的均衡和协同是保障教育经费投入充足的基础。通过构建演化博弈模型,分析三方在教育经费投入过程中的策略选择,并用仿真建模分析探究其主要影响因素。结果表明,财政补贴显著影响社会的策略选择;办学成本是制约政府、社会加大教育经费投入的关键要素;社会有动力参与教育经费投入,但要处理好成本收益关系。基于此,提出科学统筹高职院校和社会力量的教育经费投入机制,降低高等职业教育的办学成本,完善政府、学校和社会三方之间的信息交流平台,加大政策宣传以增强高职教育社会认同感。 展开更多
关键词 教育经费投入 演化博弈模型 教育资源 高等职业教育
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视前区正中核注射前列腺素E_(2)对雌性小鼠体温的影响及其机制
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作者 李娅 宋宜安 +4 位作者 吉巧凤 徐蕾 张洁 胥建辉 侯晓钰 《安徽医科大学学报》 北大核心 2026年第2期250-257,共8页
目的研究视前区正中核(MnPO)微量注射前列腺素E_(2)(PGE_(2))对雌性小鼠体核温度的影响,并阐明其作用机制。方法采用立体定位术在雌性小鼠MnPO植入微量注射套管。此后采用多通道温度信号采集系统同步监测MnPO注射不同试剂前后小鼠的直... 目的研究视前区正中核(MnPO)微量注射前列腺素E_(2)(PGE_(2))对雌性小鼠体核温度的影响,并阐明其作用机制。方法采用立体定位术在雌性小鼠MnPO植入微量注射套管。此后采用多通道温度信号采集系统同步监测MnPO注射不同试剂前后小鼠的直肠温度和棕色脂肪(BAT)温度。为观察MnPO微量注射PGE_(2)的体温调节作用,将12只雌性C57BL/6小鼠随机分为生理盐水组(n=6)和PGE_(2)组(n=6),分别注射0.1μL生理盐水和PGE_(2)(2.8 mmol/L)。为了确定E系列前列腺素受体(EP)1、EP3、EP4是否介导PGE_(2)的体温调节作用,将15只雌性C57BL/6小鼠均分为3组,每组5只。往各组小鼠的MnPO分别先后注射0.1μL PGE_(2)(2.8 mmol/L),待体温回复至基线水平后,再分别注射EP1、EP3或EP4拮抗剂(ant)(20 mmol/L)+PGE_(2)(2.8 mmol/L)混合液。结果与基础水平比较,MnPO微量注射PGE_(2)后,雌性小鼠的直肠温度(P<0.01)和BAT温度(P<0.001)均明显升高。与生理盐水组比较,PGE_(2)组小鼠直肠温度(P<0.001)和BAT温度(P<0.0001)的上升幅度明显更大。此外,往MnPO注射PGE_(2)后,小鼠BAT温度的上升幅度明显大于直肠温度的上升幅度(P<0.001)。与注射PGE_(2)后比较,小鼠MnPO注射EP3 ant+PGE_(2)后直肠温度的上升幅度(P<0.001)和BAT温度的上升幅度(P<0.001)均更小;而小鼠MnPO注射EP1 ant+PGE_(2)和EP4 ant+PGE_(2)后小鼠直肠温度的上升幅度和BAT温度的上升幅度,均差异无统计学意义(P>0.05)。结论MnPO注射PGE_(2)可经EP3受体明显升高雌性小鼠的BAT温度和体核温度。 展开更多
关键词 雌性小鼠 发热 棕色脂肪组织 前列腺素E_(2) 视前区正中核 EP3受体
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以服务型制造为变革重点推进制造业产业模式和企业形态创新发展
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作者 黄庆学 周源 +5 位作者 薛塬 孔德婧 臧冀原 苗仲桢 刘宇飞 王彬 《中国工程科学》 北大核心 2026年第1期81-94,共14页
人工智能作为引领新一轮科技革命和产业变革的战略性技术,正在推动制造业产业模式和企业形态发生根本性转变;分析新一轮工业革命下制造业产业模式和企业形态的演化机理,对产业和企业向更高阶形态演进具有重要意义。本文从市场需求牵引... 人工智能作为引领新一轮科技革命和产业变革的战略性技术,正在推动制造业产业模式和企业形态发生根本性转变;分析新一轮工业革命下制造业产业模式和企业形态的演化机理,对产业和企业向更高阶形态演进具有重要意义。本文从市场需求牵引、智能制造技术驱动的角度出发,系统梳理了工业革命和制造业产业模式及企业形态的演变脉络;全面总结了十年来我国制造业产业模式和企业形态创新发展的代表性进展,即从大规模生产模式转向规模定制化生产模式,由竞争和垄断转向竞争与协同共享的组织模式,由生产型制造转向服务型制造的企业业态。未来十年,应以服务型制造为变革重点,同步构建知名品牌、发挥人工智能赋能作用、建设标准体系,以制造业产业模式和企业形态创新发展支撑制造强国建设。 展开更多
关键词 产业模式 企业形态 服务型制造 规模定制化生产 共享制造
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基金家族中被动投资对主动基金的影响——基于中国A股市场的证据
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作者 肖欣荣 周晏伊 王彬宇 《证券市场导报》 北大核心 2026年第3期67-80,共14页
近年来,基金公司大力发展被动投资,产品结构已逐步由主动管理主导转向主被动并重。在此背景下,考察被动投资与主动基金的关系已成为重要议题。本文从基金家族(同一基金管理公司管理的公募基金集合)结构视角出发,以2008年1月至2023年12... 近年来,基金公司大力发展被动投资,产品结构已逐步由主动管理主导转向主被动并重。在此背景下,考察被动投资与主动基金的关系已成为重要议题。本文从基金家族(同一基金管理公司管理的公募基金集合)结构视角出发,以2008年1月至2023年12月公募开放式股票型基金为样本,系统检验基金家族中被动投资对主动基金行为与绩效的影响及其作用机制。研究发现:基金家族中被动基金占比越高,主动基金管理费率与营销费用越低、业绩表现越好,但受产品替代效应影响,其资金净流入有所下降。机制分析表明,一方面,交易型开放式指数基金(ETF)通过竞争效应推动主动基金降费,形成优胜劣汰的市场效应,进而改善业绩;另一方面,普通被动指数基金(PIMF)收取的管理费用则通过家族内部资金池共享机制,对主动基金形成财务支持,有助于主动基金吸纳优质人才与升级投研团队,从而促进业绩提升。建议监管部门在鼓励指数基金等被动投资产品发展的同时,因势利导促进主动基金持续健康发展,通过优化市场结构提升投资者的长期回报。 展开更多
关键词 基金 被动投资 主动基金 基金家族 资源共享
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