沿海城市数字技术效率差异分解及收敛性分析  

Decomposition and Convergence Analysis of Differences in Digital Technology Efficiency in Coastal Cities

作　　者：沈金生[1] 李悦 SHEN Jinsheng;LI Yue(School of Economics,Ocean University of China,Qingdao 266100,China)

机构地区：[1]中国海洋大学经济学院,青岛266100

出　　处：《海洋开发与管理》2024年第4期50-62,共13页Ocean Development and Management

摘　　要：在数字技术领域沿海城市发展水平存在着较大差距,剖析数字技术效率差异来源及收敛性特征,有助于加快我国“智慧海洋城市”建设。为此,文章基于2013—2019年53个沿海城市的面板数据,构建投入产出分析框架,利用基于非期望产出的超效率SBM模型和Malmquist指数对数字技术效率进行静态和动态测算,并依据行政级别的不同,利用Kernel核密度估计法、Dagum基尼系数、σ收敛与β收敛研究沿海城市数字技术效率动态演进、差异分解及收敛性分析。结果发现:(1)沿海城市数字技术效率处于波动上升态势,主要由技术进步拉动,其中上海市数字技术效率稳定地达到DEA有效状态。(2)沿海城市总体数字技术效率差异存在扩大趋势,主要由区域间差异造成,分布有明显的右拖尾特征,存在向右移动趋势。(3)沿海城市数字技术效率β收敛特征明显,不存在σ收敛。文章的研究为提高沿海城市数字技术效率和“智慧海洋城市”建设提供理论支撑和实证依据。In the field of digital technology,there is a big gap between the development level of coastal cities.Analyzing the source of digital tchnology efficiency differences and convergence characteristics can help to accelerate the construction of China's“smart marine city”.To this end,based on the panel data of 53 coastal cities from 2013-2019,this paper constructs an in-put-output analysis framework,utilizes the super efficient SBM model based on non-expected outputs and the Malmquist index for static and dynamic measurements of digital technology effi-ciency,and based on the different administrative levels,utilizes the Kernel density estimation method,Dagum Gini coefficient,the aconvergence andβconvergent to study the dynamic evolu-tion,difference decomposition and convergence analysis of digital technology efficiency in coastal cities.The results show that(1)the digital technical efficiency of coastal cities is in a fluctuating upward trend,mainly pulled by technological progress,among which the digital technical efficiency of Shanghai has reached the DEA effective state stably.(2)There is a tend-ency for the overall digital technical efficiency difference of coastal cities to expand,mainly caused by inter-regional differences,and the distribution has obvious right trailing characteris-tics,and there is a tendency to move to the right.(3)The β convergence characteristics of digital technology efficiency in coastal cities are obvious,and there is no a convergence.The re-search in this paper provides theoretical support and empirical evidence for the improvement of digital technology efficiency in coastal cities and the construction of“smart ocean city”.

关 键 词：数字技术效率 沿海城市 Kernel核密度估计 Dagum基尼系数 收敛性分析 

分 类 号：F49[经济管理—产业经济]