【作者】 胡玲；

【导师】 徐晔；

【作者基本信息】 江西财经大学 ， 应用统计， 2022， 硕士

【副题名】基于中国智慧城市试点的准自然实验

【摘要】 创新是一个国家实现经济可持续健康发展的内在动力,各国都越来越注重提升自身的创新水平。智慧城市政策是一项国家出台的关于城市发展的政策,目的是推动新型城市建设。在创新驱动战略下,试点城市创新相关行业和产业在财政和政策上会得到政府部门的支持,促进城市创新相关要素的集聚,提升城市创新质量,有利于提升城市核心竞争力,进一步地促进经济可持续健康发展。本文利用中国专利数据库、城市统计年鉴的数据,建立了衡量城市创新质量的指标体系,更好地估计智慧城市建设对城市创新质量的影响。首先,本文采用双重差分法进行估计,通过平行趋势与动态效应检验、反事实检验验证双重差分的前提假定是否成立;使用PSM-DID、随机抽样回归等方法检验估计结果的稳健性。根据检验结果得出,首批试点城市具有自然实验属性,双重差分估计结果较为准确,智慧城市建设显著提升了城市创新质量。第二,本文探讨了智慧城市建设对城市创新质量的作用机制。研究发现智慧城市建设显著提升了城市信息化水平,信息化水平的提升增强了知识溢出范围,从而促进创新质量的提升;运用中介效应模型和门槛效应模型来估计智慧城市建设通过金融聚集对城市创新质量的影响,发现金融集聚对城市创新质量的影响存在两个门槛,金融集聚对城市创新质量的作用呈倒U型,且金融集聚水平对城市创新质量的影响存在区域异质性。第三,研究发现智慧城市建设对市场化程度不同的城市创新质量的影响存在异质性。对于高市场化程度的城市来说,智慧城市建设对城市创新质量存在显著的提升效果,中等和低等市场化程度城市的提升效果不显著;第四,对城市特征不同的城市创新质量的影响存在异质性,从不同人力层次来看,智慧城市试点对低人力资本城市创新质量促进效果较好,而对具有高人力资本的城市,创新质量的提升效果不显著;从不同财力水平来看,在高财力地区智慧城市建设对创新质量的促进作用显著,低财力地区效果不显著。本文根据以上分析提出相应的政策建议。第一,扩大智慧城市试点,加强智慧城市建设总体规划;第二,加强城市信息化建设,促进知识、人才和技术在更大范围内流动;积极引导城市金融机构在合理的范围内集聚,充分发挥资本市场优势,为创新提供支持与保障;第三,提升城市市场化程度,打破创新资源流动壁垒,促进创新资源的合理配置;第四,加强专业高技术人才培养与相关补贴,为创新提供强大的智力支持与资金保障。更多还原

【Abstract】 Innovation is the internal driving force for a country to achieve sustainable and healthy economic development,and all countries are paying more and more attention to improving their own level of innovation.The Smart City Policy is a national policy on urban development with the aim of promoting the construction of new cities.Under the innovation-driven strategy,the pilot urban innovation-related industries and industries will receive financial and policy support from government departments to promote the agglomeration of urban innovation-related elements,improve the quality of urban innovation,help enhance the core competitiveness of cities,and further promote the sustainable and healthy development of the economy.This thesis uses the data of China Patent Database and Urban Statistical Yearbook to establish an index system to measure the quality of urban innovation,and better estimate the impact of smart city construction on the quality of urban innovation.Firstly,the double difference method is used for estimation,and the premise of double difference is verified by parallel trend and dynamic effects test and counter fact test,and the robustness of the estimated results is verified by PSM-DID and random sampling regression.According to the test results,the first batch of pilot cities have natural experimental attributes,the double difference estimation results are more accurate,and the construction of smart cities has significantly improved the quality of urban innovation.Second,this thesis explores the mechanism of smart city construction on the quality of urban innovation.The study found that the construction of smart cities significantly improved the level of urban informatization,and the improvement of the level of informatization enhanced the scope of knowledge spillover,thereby promoting the improvement of innovation quality;the mediation effect model and threshold effect model were used to estimate the impact of smart city construction on the quality of urban innovation through financial agglomeration,and it was found that there were two thresholds for the impact of financial agglomeration on the quality of urban innovation,the effect of financial agglomeration on the quality of urban innovation was inverted U-shaped,and the impact of financial agglomeration level on the quality of urban innovation was regional heterogeneity.Third,the study finds that there is a heterogeneity in the impact of smart city construction on the quality of urban innovation with different degrees of marketization.For cities with a high degree of marketization,the construction of smart cities has a significant improvement effect on the quality of urban innovation,and the improvement effect of cities with medium and low marketization degrees is not significant;fourth,there is heterogeneity in the impact on the quality of urban innovation with different urban characteristics,from the perspective of different human levels,smart city pilots have a better effect on the quality of innovation in cities with low human capital,while for cities with high human capital,the improvement effect of innovation quality is not significant;from the perspective of different financial levels,The construction of smart cities in areas with high financial resources has a significant effect on promoting the quality of innovation,while the effect of low-financial areas is not significant.This thesis puts forward corresponding policy recommendations based on the above analysis.First,expand the pilot project of smart cities and strengthen the overall planning of smart city construction;second,strengthen the construction of urban informatization and promote the flow of knowledge,talents and technology on a larger scale;actively guide urban financial institutions to gather within a reasonable range,give full play to the advantages of the capital market,and provide support and guarantee for innovation;third,enhance the degree of urban marketization,break down barriers to the flow of innovative resources,and promote the rational allocation of innovative resources;fourth,strengthen the training of professional high-tech talents and related subsidies.Provide strong intellectual support and financial guarantee for innovation.更多还原