scholarly journals Rethinking the Optimal City Size from the Perspective of the City Network

2017 ◽  
Vol 05 (05) ◽  
pp. 134-145
Author(s):  
Yuhong Cheng ◽  
Chujun Ma
Keyword(s):  
City Size ◽  
City Network ◽  
Optimal City Size ◽  
The City

scholarly journals What is the quality of a city? Ways of thinking spaces that change

2020 ◽  
Author(s):  
Antonella Contin ◽  
◽  
Valentina Galiulo ◽  
Keyword(s):  
Mutual Effect ◽  
City Size ◽  
Public Realm ◽  
Knowing That ◽  
New Public ◽  
Optimal City Size ◽  
Performance Dimensions ◽  
Living Related ◽  
The City

Understanding the effects of a metropolis' changes in scale - the rate of growth and its speed - rather than pursuing the search for optimal city size, is mandatory. The New Urban Agenda discussed performance dimensions of the contemporary city’s functioning mode, knowing that place quality derives from a mutual effect with the society that uses it. However, our research focuses on how city performance dimensions can be measured to establish the values of the metropolitan form that are capable of endowing metropolitan projects with meaning. The Metropolitan Paradigm of inter-scalar connection and the Metropolitan Architecture Project Hybrid Typology are the references to measure the metropolis’ performance. The Metropolitan Paradigm concerns the five city dimensions: physical, economic, energetic, social and governance. In particular, the aim of the paper is to study the physical metropolitan framework and its impact on the lives of metropolitan inhabitants, socio-economic flows and the meaning of the concept of "environment" today. The city is still analysed as a spatial phenomenon represented by data/quantities related to space. Nevertheless, the value of form plays a fundamental role within the Metropolitan Discipline at all scales, as spatial relationships within metropolitan settlements are increasingly not metric but relational. In conclusion, we study the connection between history and geography, environmental issues, the Metropolitan Structural Paradigm, and the new Public Realm heterogeneous elements to represent the metropolitan quality and living-related values that constitute the Metropolitan Democracy’s opportunity.

Are Chinese Cities Oversized?

2019 ◽  
Vol 43 (6) ◽  
pp. 632-654
Author(s):  
Daidai Shen ◽  
Jean-Claude Thill ◽  
Jiuwen Sun
Keyword(s):  
Neural Networks ◽  
Equilibrium Model ◽  
Urban Population ◽  
Urban System ◽  
Agglomeration Economies ◽  
City Size ◽  
Chinese City ◽  
Intermediate Solution ◽  
Optimal City Size ◽  
The Impact

In this article, the socioeconomic determinants on urban population in China are empirically investigated with a theoretical equilibrium model for city size. While much of the research on urban size focuses on the impact of agglomeration economies based on “optimal city size” theory, this model is eschewed in our research due to its theoretical paradox in the real world, and we turn instead toward an intermediate solution proposed by Camagni, Capello, and Caragliu. This equilibrium model is estimated on a sample of 111 prefectural cities in China with multiple regression and artificial neural networks. Empirical results have shown that the model explains the variance in the data very well, and all the determinants have significant impacts on Chinese city sizes. Although sample cities have reached their equilibrium sizes as a whole, there is substantially unbalanced distribution of population within the urban system, with a strong contingent of cities that are either squarely too large or too small.

scholarly journals Urban Accounting and Welfare

2013 ◽  
Vol 103 (6) ◽  
pp. 2296-2327 ◽  
Author(s):  
Klaus Desmet ◽  
Esteban Rossi-Hansberg
Keyword(s):  
Large Population ◽  
The United States ◽  
Welfare Effects ◽  
City Size ◽  
Negative Effects ◽  
The Us ◽  
City Size Distribution ◽  
Using Data ◽  
Main Components ◽  
The City

We use a simple theory of a system of cities to decompose the determinants of the city size distribution into three main components: efficiency, amenities, and frictions. Higher efficiency and better amenities lead to larger cities but also to greater frictions through congestion and other negative effects of agglomeration. Using data on MSAs in the United States, we estimate these city characteristics. Eliminating variation in any of them leads to large population reallocations, but modest welfare effects. We apply the same methodology to Chinese cities and find welfare effects that are many times larger than those in the US. (JEL H71, O18, P25, R11, R23, R41)

scholarly journals Features of hydraulic modes of low pressure gas networks

2019 ◽  
Vol 91 ◽  
pp. 02050
Author(s):  
Viktor Zhila ◽  
Elena Solovyeva
Keyword(s):  
Thermal Load ◽  
Ignition Temperature ◽  
Stoichiometric Composition ◽  
Combustion Process ◽  
Gas Pressure ◽  
Nominal Pressure ◽  
Main Indicator ◽  
City Network ◽  
The City ◽  
Gas Supply

In conditions of modern gas supply, the gas parameters are not constant. In this regard, gas appliances operate at different pressures. In operation, the change in the thermal load of the devices is due to fluctuations in the gas pressure in the city network. These oscillations are associated with the gas oscillations at the outlet from the gas regulating station. The main indicator of qualitative combustion of gas in appliances is the completeness of combustion, and this depends on maintaining the nominal pressure. The time during which the combustion process is completed consists of the time necessary for the formation of a gas-air mixture of stoichiometric composition, for heat the mixture to the ignition temperature, and of the time during which the combustible components of the gas react with oxygen.

scholarly journals The Character and Economic Preference of City Network of China: A Study Based on the Chinese Global Fortune 500 Enterprises

Complexity ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Xinzheng Zhao ◽  
Jing Su ◽  
Jing Chao ◽  
Xiaoqiong Liu ◽  
Tongsheng Li ◽  
...  
Keyword(s):  
Network Structure ◽  
Radiation Effect ◽  
Positive Impact ◽  
Spatial Relations ◽  
Fortune 500 ◽  
Urban Agglomerations ◽  
Large Cities ◽  
Network Function ◽  
City Network ◽  
The City

Based on the data of Chinese enterprises that entered the Fortune 500 list in 2015, this paper utilizes the eclectic model to construct the inter-city association network. Using the network analysis method, the spatial connection characteristics of 311 inter-city networks at prefecture level and above and 20 urban agglomerations networks in China are examined, respectively. The research found the following: (1) the overall connectivity of city network is poor, the centripetal concentration is strong, and the network is not complete. The city network structure shows three tendencies, with a concentration in political centers, a concentration in coastal areas, and a concentration in resource-based cities. The external economic dependence of each node city in national city network is high, and the city network structure has distinctly flattening characteristics. (2) Network function of cities is obviously different in multiscale region. Large cities and regional centers have more balanced function systems than the small- and medium-sized cities do. (3) The network of urban agglomerations is characterized by decentralization of power, differentiation of status, and dependence on external connections. The radiation effect of three major urban agglomerations in coastal China is strong, but the radiation effect of other urban agglomerations needs to be strengthened. (4) Both city networks and agglomeration economies have positive impact on economic growth of the city. The economic performance of city networks is differentiated between urban agglomeration cities and nonurban agglomeration cities, as well as between cities of different scale levels. This study provides new evidence for understanding the spatial relations and expansion of Chinese city networks.

Dual Legitimacy in the Development of the Network City - A Case Study of Kaohsiung City Council

2014 ◽  
Vol 12 (3) ◽  
pp. 591-621 ◽  
Author(s):  
Da-Chi Liao ◽  
Hsin-Che Wu ◽  
Chen-Hsun Li
Keyword(s):  
Local Government ◽  
Local Governance ◽  
Executive Branch ◽  
City Council ◽  
Dual Systems ◽  
City Network ◽  
The City ◽  
Kaohsiung City

This paper discusses the theoretical rheology of local governance from the bureaucratic system to the network city and explores whether and how such a city network can be developed in a dual local government system. This paper suggests that, in dual systems, councilors are nodes which extend their networks, and councilors together can construct a more comprehensive network than a city executive branch alone does, so as to remedy the executive branch’s deficiencies concerning city affairs. This paper chooses Kaohsiung city council as its case study and provides evidence that the network developed by city council and councilors covers many city affairs which are ignored by the city executive branch. This result also implies that the network city may be better feasible in a dual local government system than in a unitary one.

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