A Study of Coupling Coordination between Marine Economy and Land Economy Based on Gear Model

Based on the construction of evaluation index system of marine-land economy system,this paper analyzes the coupling coordination between marine economy and land economy. The coupling coordinative model is used to analyze the coupling coordinative degree of the marine economy and land economy. The results show that from 2002 to 2012,the marine economy and land economy coupling degree was high and it achieved coordination from disorder gradually,resulting in mutual promotion and common development of marine economy and land economy.

Research on the Coupled and Coordinated Development of Tourism and Transport in Chengdu City

Based on a total of 16 indicators selected from the tourism and transport industries,an evaluation index system of the coupling and coordination development level of tourism and transport is constructed.The entropy value method and the coupling coordination degree model are used to conduct an empirical study on the development level and coupling coordination level of the transport and tourism industries in Chengdu City from 2011 to 2020.The results show that,on the whole,the coupling coordination degree of transport and tourism in Chengdu is poor and has been in a state of mild to moderate dysfunction.The development level of tourism lagged behind the development of transport from 2011 to 2012,and the two were in a state of mild dysfunction.However,from 2013 onwards,the development level of tourism was prioritized over the development level of transport.This shift caused the coupling coordination degree of the two industries to decline sharply to 0.23305 in 2013.The development level of the tourism industry increased again,reaching 0.34206 in 2019,which marked an improvement.Consequently,the coordination degree of the transport and tourism industries evolved from moderate dislocation to mild dislocation.Finally,the results of the empirical research are analyzed,and corresponding suggestions are put forward to promote the sustainable growth of the transport and tourism industries in Chengdu City.These suggestions aim to improve the coupled and coordinated development level of the two industries.

Interaction and coordinated development between desertification control and social economy in Xizang,China

Based on the general requirements of the coordinated development of"ecological livable"and"affluent life"in the rural revitalization strategy,the evaluation index system of desertification control was constructed,the interaction between desertification control and regional social economy and the internal space-time coordination mechanism were explored,and the quality of desertification control and its coordination degree with regional economic development were quantitatively analyzed.The decoupling mechanism of desertification governance society economy system were analyzed,and the high level for the government to promote desertification governance,constructing ecological economy coordinated development pattern to provide decision basis to Xizang desertification governance-social economic system interaction and coupling coordination development as the research object,introducing the coupling decoupling model to measure the coupling coordination model and system coordination and decoupling decoupling.Desertification control in Xizang shows a trend of gradual improvement,but the overall level is still not high and there is a lot of room for optimization.The coupling coordination degree of desertification control-social and economic system is in a steady fluctuation trend,rising from D value less than 0.55 in 2004 to 0.87 in 2018,in a state of coordinated development(good),and grey prediction analysis shows that D value is in a continuous rise.The coupling coordination degree of the six prefecture-level cities in Xizang and Ngari region is different in time and space,but the overall development trend is coordinated.The development index of desertification control and the socio-economic development index show the interaction of strong decoupling,strong negative decoupling and weak decoupling,and there are interaction effects of desertification control,economic development and social development at different scales.

Coupling dynamic analysis of a liquid-filled spherical container subject to arbitrary excitation

Using spherical coordinates, the coupling nonlinear dynamic system of a liquid-filled spherical tank, which can be excited discretionarily, is deduced by the H-O varia- tional principle, and the viscous damping is introduced via the liquid dissipation function. The kinetic equations of the coupling system are deduced by the relationship between the velocity of liquid particles and the disturbed liquid surface equation. Normal differential equations are obtained through the Galerkin method. An equivalent mechanical model is developed for liquid sloshing in a spherical tank subject to arbitrary excitation. The fixed and slosh masses, as well as the spring and damping constants, are determined in such a way as to satisfy the principle of equivalence. Numerical simulations illustrate the theoretical results in this paper as well.

Spatial-temporal Evolution of the Urban-rural Coordination Relationship in Northeast China in 1990-2018

To comprehensively understand the law of urban-rural relationship and propose scientific measures of urban-rural coordinated development in Northeast China,this study uses the coupling coordination degree model and geographically and temporally weighted regression(GTWR)model to analyze the spatial-temporal patterns and the corresponding driving mechanisms of its urban-rural coordination since 1990.The results are as follows.First,the urban-rural coupling coordination degree in Northeast China was very low and improved slowly,but its stages of evolution is a good interpretation of the strategic arrangements of China's urbanization.Second,the urban-rural coupling coordination degree in Northeast China had spatial differences and was characterized by central polarization,converging on urban agglomeration,which was high in the south and low in the north.Moreover,the gap between the north and south weakened.Third,the spatial-temporal evolution of the urban-rural coordination relationship in Northeast China was influenced by pulling from the central cities,pushing from rural transformation,and government regulations.The influence intensity of the three mechanisms was weak,but the pulling from the central cities was stronger than that of the other two mechanisms.Furthermore,the spatial difference between the three mechanisms determines the spatial pattern and its evolution of the urban-rural coordination relationship in Northeast China.Fourth,to promote the development of urban-rural coordination in Northeast China,it is essential to advance urban-rural economic correlation,enhance the government^role in regulating and guiding,and adopt different policies for each region in Northeast China.

Research on the Coupling between Agricultural Heritage and Tourism Industry: A Case Study of Jasmine and Tea Culture in Fuzhou

The integration of agricultural heritage and tourism industry contributes significantly to regional heritage protection,rural revitalization,and cultural inheritance.Based on the coupling coordination degree model,a quantitative research was conducted to study the integration of agricultural heritage in terms of the jasmine and tea culture system in Fuzhou with the local tourism industry.The results showed that both the development of Fuzhou's jasmine and tourism industries have advanced significantly and are currently leading in the country.However,they are not developing at the same pace.The results also showed that the coordination degree between Fuzhou5s jasmine and tourism industries have increased in recent years,with deepened mutual effects and improved coordination.Moreover,the coupling coordination degree has been rising over the past 13 years,with the coupling coordination level transforming from''extreme disorder''to"quality coordination,demonstrating a slow integration progress of Fuzhou's jasmine with the tourism industry at the early stage,but a sound development momentum at the later stage.

Evaluation of the coordinated development of China’s forest resources-economy-environment system

Forests provide enormous ecological, economic, and social benefits, as such forest development should be ori‐ented toward resource-economy-environment harmonization. This paper constructs a comprehensive evalua‐tion index system and uses the coupled coordination degree model to measure the coordinated development level of China’ s forest resources-economy-environment system. The results show that, across 2006‒2020, the level of coupled coordinated development of China’ s forest resources-economy-environment composite system fluctuates in an upward trend, thus gradually developing from an initial imbalance to a high degree of coordi‐nation;the level of coordinated development of each subsystem of the forest resources, economy, and environ‐ment also shows an upward trend. The factors influencing the coordinated development of the forest resource economy-environment system are, in order, the government’ s financial capacity, market environment, scien‐tific and technological innovation capacity, level of economic development, and strength of policy implemen‐tation. Therefore, this paper proposes some measures to improve the coordinated development.

我国农村碳排放强度与乡村振兴协同发展分析

基于对2010—2020年中国农村碳排放强度与乡村振兴发展水平的测算,探究两者耦合协调度并进行空间自相关分析,借助面板向量自回归(VAR)模型佐证农村碳排放强度与乡村振兴互动效应。研究结果表明:我国农村碳排放强度波动下降,乡村振兴发展水平持续上升,但区域间发展差异性较大;两者耦合协调度稳步提升,从期初的中等协调转为优质协调状态,空间上存在正相关性,主要表现为高-高集聚和低-低集聚两种分布类型,且集聚程度均逐年减弱;农村碳排放强度与乡村振兴存在长期稳定的协整关系,农村碳排放强度与乡村振兴对自身冲击效应较大,而农村碳排放强度对乡村振兴发展的抑制作用强于乡村振兴对农村碳排放强度的促进作用。基于实证分析,建议加强政策制度建设和碳排放监管、实施补贴政策,并促进农业技术创新,以推动农业生产方式向低碳转型,以实现农村碳排放与乡村振兴的协同发展。

数字经济与海洋经济高质量发展耦合协调分析

数字经济作为经济发展的新动能,为我国海洋经济实现高质量发展提供了新方向。构建数字经济与海洋经济高质量发展的评价指标体系,运用耦合协调模型和障碍因子模型,探究中国11个沿海省区市数字经济与海洋经济高质量发展耦合协调发展现状及其障碍因子。结果发现:①2011—2020年沿海地区数字经济和海洋经济高质量发展的综合发展水平及耦合协调度均呈现上升趋势,其中数字经济发展迅猛,海洋经济发展稳中向好,耦合系统从整体失调状态发展到整体良好耦合协调状态;②沿海各省区市耦合协调度均有不同程度的提升,耦合协调状态空间差异逐渐减小,2020年9个省区市均发展到基本协调状态以上,其中广东处于高度耦合协调状态;③通过障碍度诊断发现,数字经济障碍度具有“数字基础设施>数字产业化>产业数字化”的特征,海洋经济高质量发展层面具有“海洋科技创新>海洋社会效益>海洋经济效益>海洋资源环境”的特征。

浙江省数字经济与绿色发展耦合协调关系测度及政策启示

绿色发展与数字经济的有机融合是实现区域高质量发展的重要途径。本文以浙江省11个地级市为典型案例区,构建了包含7个子系统、37个指标的绿色发展与数字经济评价指标体系,采用改进的耦合协调度模型对2014—2020年数字经济和绿色发展系统的耦合协调关系进行关系测度,以期为区域可持续发展决策提供参考。结果发现:(1)绿色发展系统与数字经济系统综合发展水平总体都呈现上升趋势,除了杭州外,其他城市均表现数字经济发展水平滞后于绿色发展水平。(2)杭州是浙江省的绿色发展和数字经济“领头羊”,并在2019年率先进入高级协调阶段,其余10个城市仍处于初级协调阶段。未来,需注重城市间的差异性发展和重点扶持数字基础设施的投入建设。

数字经济与绿色物流的协同发展研究——以智慧城市试点城市为例

文章选取108个智慧城市试点城市2017-2021年面板数据,采用耦合协调模型,对试点城市中数字经济与绿色物流的协同程度进行评价。在此基础上,通过固定效应模型,检验试点城市中数字经济与绿色物流协同关系的影响因素。研究发现:108个智慧城市试点中,华北、华东地区中的试点城市耦合协调度相对较高,西北、东北地区中的试点城市耦合协调度相对较低,不同等级城市之间的耦合协调度存在梯度差异。经济发展水平、信息化水平以及技术行业人力资本对耦合协调关系存在显著相关关系,产业结构与环境建设对耦合协调发展均没有显著影响。

中国降碳-减污-扩绿-增长协同发展空间关联网络特征及影响因素研究

协同推进降碳-减污-扩绿-增长已成为我国经济社会发展全面绿色转型的必然选择。基于我国30个省份面板数据(不包含港澳台地区以及西藏自治区数据),运用熵值法、耦合协调度模型和社会网络分析方法,分析各省份间降碳-减污-扩绿-增长协同演变趋势及空间关联网络特征。结果表明:①各省份降碳-减污-扩绿-增长协同效应的变化趋势基本一致,但在空间上呈现东部>东北>西部>中部的区域不均衡特征。②降碳-减污-扩绿-增长协同效应呈现以东部地区为核心的复杂空间网络结构,省际间空间关联性呈上升态势,但网络结构稳定性还有待提高。③北京市、天津市和上海市等地区凭借优越区位,在关联网络中处于主导地位,而宁夏回族自治区、黑龙江省和新疆维吾尔自治区等地区对其他地区的影响较小。④北京市、天津市和上海市等地区属于“主受益”板块,浙江省、广东省等地区属于“经纪人板块”,安徽省、江西省和湖北省等地区属于“净溢出”板块。⑤降碳-减污-扩绿-增长协同效应的空间关联网络受多种因素共同影响,人力资本水平、科技投入、市场化水平和数字经济发展均有利于空间关联关系的建立。研究显示,中国降碳-减污-扩绿-增长协同效应存在空间关联性,需进一步加强省份间的绿色合作与交流,共同推动降碳-减污-扩绿-增长协同发展。

高质量发展目标下脱贫县农业产业化与农地利用生态效率耦合协调分析:以江西省为例

探究脱贫县农业产业化与农地利用生态效率耦合协调关系,对促进农业高质量发展具有重要意义。基于新发展理念,以江西省25个脱贫县为研究对象,构建农业产业化与农地利用生态效率耦合评价体系,借助耦合协调模型和泰尔指数模型测度两者的耦合协调水平及其区域差异。结果表明:(1)2011—2020年,江西省脱贫县农地利用生态效率总体水平较高,年均值为0.738,赣南地区高于赣中和赣北地区;(2)2011—2020年,江西省脱贫县农业产业化发展指数总体水平较低,年均值为0.414,赣北地区最高,其次为赣中,赣南最低;(3)2011—2020年,脱贫县农业产业化与农地利用生态效率耦合协调指数由期初的0.321升至期末的0.342,总体处于中度失调和轻度失调阶段;(4)脱贫县地区内差异对泰尔指数总体贡献最大,县域农业发展协调性较弱。进一步分析可以发现,市场与政府的作用差异是导致农业产业化水平与农地利用生态效率存在差异的主要原因,综合运用行政和市场手段推动农业产业化发展是提高两者耦合协调水平的关键。

物流业和制造业融合发展对全要素生产率的影响

基于2006—2020年的省际面板数据,使用耦合协调度模型测算我国物流业和制造业的融合发展水平。研究发现:我国各省份物流业和制造业融合发展度逐步上升,总体上处于低水平向高水平过渡的协调阶段。(1)省际之间物流业与制造业融合水平存在差异,其中浙江、江苏、山东和广东的融合发展水平最高,中部和西部省份融合发展水平提高较快,吉林、黑龙江和辽宁三省则有退步。(2)使用固定效应模型检验两业融合发展对全要素生产率的影响,发现两业融合发展度的提高能够促进区域全要素生产率的提升,该结论在利用IV-GMM和IV-LIML等模型估计下依旧显著。(3)两业融合发展度的提高一方面可以推动全要素生产率边界的扩大,另一方面有利于实际效率趋近最优效率。

皖江城市带数字经济产业协同发展水平评价及障碍因子诊断

数字经济以数字技术和数据要素为核心,是我国增强实体经济新动能、建设现代化产业体系的关键之举。文章依据数字经济的核心要义,从数字基础设施、产业数字化和数字产业化3个维度构建皖江城市带数字经济产业协同发展评价指标体系,采用熵值法和耦合协调度模型测度皖江城市带数字经济产业协同发展水平,结合Kernel密度函数刻画其动态演化规律,进一步引入障碍度模型识别阻碍皖江城市带数字经济产业协同发展的主要因素。结果表明:2011—2021年,皖江城市带数字经济产业协同发展水平逐年提升,受制于产业数字化的滞后发展,数字产业化与产业数字化协同发展水平较低。此外,皖江城市带数字经济产业协同发展的空间动态演进特征差异较大,极化现象明显,梯度特征显著。障碍度分析显示数字产业化是制约皖江城市带数字经济产业协同发展的主要因素。基于此,提出推进皖江城市带数字经济产业协同布局、加速城市带传统产业数字化转型、优化皖江城市群竞合关系、促进皖江城市带新型数字经济产业发展的政策建议。

移民安置区农地流转意愿影响因素及耦合协调关系研究——以贵州PQ水库为例

移民问题是水利水电项目中的关键问题,关系到社会稳定与乡村振兴。运用地理探测器,因子分析法和耦合协调度模型对水库移民农地转入意愿与安置区农户农地转出意愿影响因素及其耦合协调关系进行研究。研究结果表明:(1)安置点社区融入状况,转入农地的距离,种植业等技能培训,农地价值,家庭农业劳动力人数,非农就业机会对移民农地转入意愿起着主要影响作用;非农就业水平,对土地权益受损的担忧程度,是否有闲置土地,非农就业机会,对土地流转政策了解程度,土地流转收益预期对安置区农户农地转出意愿起着主要的影响作用。(2)各影响因子之间存在两两交互关系,其中任意两因子交互作用后因子解释力均明显增强。转入农地的距离与安置区融入情况的交互作用对移民农地转入意愿的影响力最大;农地细碎化程度,是否有闲置土地,非农就业机会这3个因子与对土地权益受损担忧程度的交互作用对安置区居民农地转出意愿的影响力最大,家庭人均耕地面积安置区居民农地转出意愿具有隐形作用。(3)移民农地转入意愿与安置区农户农地转出意愿存在强关联性,二者相互影响,相互促进,并处于农地转入意愿超前的基本协调阶段。

我国铁路货运效率与绿色物流发展耦合协调研究

铁路货运效率对绿色物流发展有重要影响,通过构建我国铁路货运效率投入产出评价指标体系和绿色物流发展评价指标体系,运用超效率DEA模型和熵权TOPSIS法分别测度2010—2020年我国30个省(市、自治区)的铁路货运效率和绿色物流发展水平,运用耦合协调度模型分析我国铁路货运效率与绿色物流发展耦合协调度,并用障碍度模型进行障碍因子诊断。结果表明:2010—2020年我国铁路货运效率呈先下降后上升态势,绿色物流发展水平呈持续向好态势;铁路货运效率与绿色物流发展耦合协调水平整体呈不断上升趋势,耦合协调等级由勉强协调演变成初级协调,耦合协调度仍有较大优化空间;通过障碍因子分析,发现铁路货运量、人均货物周转量、铁路货物周转量、物流设施用地面积和铁路里程对协调性影响较大。

2000-2020年黄河流域水-能源-粮食系统耦合协调时空演变特征

[目的]探讨黄河流域水—能源—粮食系统的耦合协调时空演化特征,可为定量评估流域高质量发展和区域可持续发展提供科学依据。[方法]通过耦合协调度模型分析水—能源—粮食系统的综合发展水平和耦合协调特征,并利用灰色关联度对各子系统内部指标进行排序,进而判断对水—能源—粮食系统耦合协调度的影响程度。[结果](1)黄河流域水—能源—粮食系统的综合发展指数呈上升趋势,水资源子系统波动幅度最大。(2) 2000—2020年黄河流域水—能源—粮食系统耦合协调度从初级协调向良好协调阶段发展;不同省区间的系统耦合协调发展水平差异较为明显,整体上可表现为上游地区>中下游地区。(3)各子系统与系统耦合协调度的影响程度排名可表示为水资源子系统>粮食子系统>能源子系统,其中水资源子系统内部指标与系统耦合协调度关联度均在85%以上,水资源子系统相对其他子系统的严格管理尤为重要。[结论]水—能源—粮食系统的耦合协调发展水平有待提高,为促进系统协调发展和流域高质量发展应综合考虑各子系统的相互作用关系。

基于耦合协调模型的人水和谐度评价

为了合理地定量评价人水关系,以西安市为例,在人水和谐概念的基础上,构建人水和谐评价指标体系,通过改进G1赋权法计算各指标权重;以水系统和人文系统综合发展水平为基础,采用耦合协调模型计算人水系统协调度,并通过障碍度模型识别人水系统协调发展障碍因素;采用单指标量化—多指标综合—多准则集成评价方法,先计算出水系统健康度和人文系统发展度,再与人水系统协调度集成,最终得到西安市2012—2021年人水和谐评价结果。结果表明:西安市人水协调度逐渐提高,各年份各指标对人水系统协调发展的阻碍程度清晰可见,人水和谐从较不和谐提升至和谐等级;该方法评价结果与实际相符,具有良好适用性,障碍因素的识别对人水关系进一步和谐有一定启发性。

基层医疗资源配置与经济高质量发展的耦合协调及其预测分析

背景精准识别制约基层医疗资源配置与经济高质量耦合协调发展的因素,对于有针对性地推动两系统耦合协调共进至关重要。然而,当前鲜有研究深入探讨阻碍两者耦合协调发展的关键因素。目的 对比分析“十二五”和“十三五”时期我国基层医疗资源配置与经济高质量发展的耦合协调水平,识别障碍因子,并预测“十四五”时期两系统的耦合协调趋势。方法 于2022年7月—2023年5月,从基层医疗资源配置系统选取卫生设施、卫生人员数、卫生经费3个维度,从经济高质量发展系统选取创新、协调、开放、共享、绿色5个维度,最终选取17项指标建立评价指标体系,指标数据源于2012—2021年的《中国统计年鉴》和相应卫生健康统计年鉴。借助熵值法与综合评价函数测算“十二五”与“十三五”时期基层医疗资源配置与经济高质量发展的综合评价值,通过构建耦合协调度模型测算其耦合协调水平,建立障碍函数诊断与识别影响耦合协调发展的障碍因子,引用灰色模型预测“十四五”期间两系统的耦合协调趋势。结果 “十二五”和“十三五”期间我国基层医疗资源配置与经济高质量发展耦合协调度由0.15上升到0.68,整体呈逐年上升的态势,虽增速较快但层次较低。卫生设施、卫生人员数、经济共享与绿色发展是制约“十二五”与“十三五”时期基层医疗资源配置与经济高质量发展二元复合系统耦合协调水平的主要障碍因子。借助修正GM(1,1)预测模型预测可知,“十四五”时期基层医疗系统与经济发展水平系统的耦合度在1.00左右微浮动,整体处于高耦合阶段,耦合协调度由0.73上升至1.12,总体呈上升态势,相对发展度>1.20,处于过度供给状态。结论为赋能基层医疗卫生体系的可持续发展,建议秉承绿色、共享的发展理念,从促进系统协调发展、完善基层医疗设施条件和打通基层医疗人才输送路径等方面着手,推动两系统和谐发展。