Urban Analysis Of Yangtze River Delta In Complex Network Perspective

This paper under the environment of global integration development of urban network development as the background, based on the perspective of complex network, research on the overall structure of the urban network characteristics and the position and role of each node of the city and the city network abstraction as a single city as the node, the relations between the two cities as the edge of the complex network, as the research object, based on the absorption of existing research results at home and abroad for reference, and characteristics of urban network of complex networks, and identification of city core nodes in a network is analyzed, and for the development of urban network system and scientific decision-making to provide theoretical support, and used to guide the city nodes in a network of cities by actively into the network promotion’s ability to allocate control network resources, in order to gain a broader space for development. Thesis focuses on the construction of a multi-level was carried out in Yangtze river delta urban network index, dynamic empirical analysis, further supplement and improve the theory and application of urban network research, realize the organic combination of theory and practice, theoretical analysis and empirical analysis of the dialectical unity.Throughout the research of this paper, first of all, research on urban network of the relevant literature is reviewed, from the perspective of urban studies history in depth, research on urban network in urban research orientation in the theoretical system, points out that the urban network research will be the future research of the key areas of a city, is the concentrated reflection of "secondary nature" city. At the same time, based on the research of urban network need combed the relevant theories of complex networks, and the evaluation of urban network were determined and the node related indicators of the city.Paper from the perspective of complex network to define urban network, and points out that the urban network is composed of a multi-level complex contact network system, the material carrier of the information interaction among the cities. At the same time, combining with the trend of the development of the urban network and power factor analysis, analysis of the evolution of urban network development model. Paper focuses on urban network topology depicting rules are described, and pointed out how to use gravity model city, establishing the city link network of weighting matrix, and through the related software, the city network abstraction for the network topology, measure the complex characteristic of the urban network, the empirical results show that the urban network we built has the characteristics of small-world networks.Thesis on the basis of the analysis of urban network, put forward the meaning of node city, points out that the node cities is not a purely physical space nodes, but in the city network resource allocation and control at the heart of the city, is the production, consumption of urban network, set a process is a reflection of urban functions. At the same time the node type, the function of our city are analyzed, such as strategic behavior of node city potential impact on the development of the urban network was analyzed, and pointed out that for the macro urban management, can be based on the analysis of urban network show that the characteristics of complex networks, take corresponding measures, urban management, control and optimization, so as to promote a city in the position and role of urban network.Paper focuses on the research, the Yangtze river delta urban network of 16 core cities in Yangtze river delta, on the basis of innovative will be divided into five cities of Shanghai, to participate in the Yangtze river delta urban network analysis, and will be in Kunshan contrast from Suzhou city, as the key to build the 21 cities of Yangtze river delta urban networks. Such an urban network, broke the past based on the administrative division of the Yangtze river delta urban agglomeration, especially a variety of administrative levels of the city together, more in line with the spatial distribution of economic activities, to break the administrative barriers, guide the district cities how to promote the position and role of the network in the city, and some new town construction has guiding significance for more.Study from the city’s industrial output, the added value of service industry, fiscal revenue, and the population of permanent residents in four aspects, according to the paper puts forward the topological rules, to the abstract of urban network, built four composed of 21 cities have to urban network, represent the urban network between "material-flow", "information&service-flow", "cash-flow" and "people-flow", and on the four-flow cases network characteristics of the research was conducted on the urban network, estimates the small world of urban network and characteristics of structural holes and the CONSOR clustering analysis. Also introduced a complex network of social relations network "position orientation and relations" to depict a series of core concept, respectively, to calculate the four urban network built 2002, 2006 and 2011 city three year 21 nodes corresponding point center degrees(including in-degree & out-degree) and the mediation center, etc. A total of more than 1000 indicators, to analyze the construction of the Yangtze river delta city of network of each node status and role of the city. Also take historical longitudinal comparative analysis method, to study the changes and the development trend of urban network cities in the Yangtze river delta city network location of the change. Also focus on the comparative analysis of the Jiading, Minhang, Baoshan, Songjiang, Kunshan and other several key research objects, on the horizontal analysis of the section, at the same time depicts several cities in setting up the relative position in the city network.On the city’s fiscal revenue, industrial output, the added value of service industry and the population of permanent residents in four aspects of city network points indegree, points out-degree, the mediation center degrees and based on the analysis of the indexes of structural holes one by one, the paper makes a comprehensive calculation, the classification of the four quadrant, according to the four indexes of attribute, the two are combined, to judge from the combination point and click on the degrees of a node the ability of resources and distribution, the city is divided into: apart from the high in-degree point – high out-degree point, high in-degree pointslow out-degree point,low in-degree point-high out-degree point, low in-degree point-low out-degree point, four types. From among the mediation degree and the level of structure hole index combination judge a city nodes in the network influence, the city is divided into: high degree of middle- high degree, high degree of middle-low degree, low degree of middle- high degree, low degree of middle- low degree four types. One at a time of fiscal revenue, the added value of industrial output, service industry and the population of permanent residents in four aspects, 2002, 2006, 2011 three years quadrant transition of city were analyzed, and the judge cities resources distribution in urban network capacity and the change of flow influence factors of network resources. Through analysis it can be seen in recent years, our cities in the urban network constructed by the position and function is constantly changing, although there are some cities quadrant of the transition does not occur, but there are still some cities, the role of network in the city or growing, weakened or continued, although many cities index absolute value is also on the rise year by year, but relative to other cities rise slower in the network, resulting in a drop in the relative position of the whole urban network, so the urban development in the urban network, not only depends on its own development, more should focus on the development strategy and strategy choice for other cities, the enhancement of urban network resources allocation, improve the node function and role, and with the help of urban network to obtain a bigger development.Thesis finally explores the growth of the urban network evolution and dynamic change process of this basis, put forward the node path and countermeasures of urban development, points out that the Yangtze river delta cities should play its unique advantages, to speed up the urban construction and industrial structure adjustment, comprehensively improve the efficiency of the comprehensive utilization of resources, improve the position and role of nodes in a network of Yangtze river delta city, especially to strengthen economic ties with cities in the urban network, boost in the whole Yangtze river delta urban agglomeration betweenness, reduce the borderline, through urban network service, continuously improve their status.