MULTISCALAR MODELING OF POLYCENTRIC URBAN-REGIONAL SYSTEMS: ECONOMIC AGGLOMERATION, SCALE DEPENDENCY AND AGENT INTERACTIONS

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Gong, Z. (2015). MULTISCALAR MODELING OF POLYCENTRIC URBAN-REGIONAL SYSTEMS: ECONOMIC AGGLOMERATION, SCALE DEPENDENCY AND AGENT INTERACTIONS. Unc Charlotte Electronic Theses And Dissertations.
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Abstract

This dissertation aims to study the causal relationship between the underlying processes of agglomeration economies and the formation of certain spatial structures at both intra- and inter-urban scales within the extent of megaregions. First, on the theoretical side, I develop a general framework to account for the interplay between market linkages and spatial costs across scales. The model system constructed from this framework allows us to study the evolution of intra- and inter-urban spatial structures in terms of monocentricity/polycentricity and agglomeration/dispersion. By examining the impacts of local spatial costs and interregional trade costs on the structural change at both scales, I find the interdependency of spatial structures across urban-regional scales. Second, I extend the theoretical models into a 2-D geographic model that can scale to real world applications. This geographic model is based on zonal geography connected by transportation networks. An agent-based approach is employed to model the discrete choice for locations and to approximate the equilibrium conditions as those in theoretical models. The simulations confirm that it is consistent with the theoretical models regarding the generated spatial structures. A demonstration application to the Carolinas megaregion is presented as a test bed for the geographic model. Three simulation scenarios presented provide insights to understand the observed pattern of urban-regional developments. In addition, high-performance computing technologies are leveraged to improve the computational performance of the geographic model.

Details
Author

Gong, Zhaoya

Title

MULTISCALAR MODELING OF POLYCENTRIC URBAN-REGIONAL SYSTEMS: ECONOMIC AGGLOMERATION, SCALE DEPENDENCY AND AGENT INTERACTIONS

Physical Description

1 online resource (198 pages) : PDF

Date

2015

Degree Granting Institution

University of North Carolina at Charlotte

Abstract

This dissertation aims to study the causal relationship between the underlying processes of agglomeration economies and the formation of certain spatial structures at both intra- and inter-urban scales within the extent of megaregions. First, on the theoretical side, I develop a general framework to account for the interplay between market linkages and spatial costs across scales. The model system constructed from this framework allows us to study the evolution of intra- and inter-urban spatial structures in terms of monocentricity/polycentricity and agglomeration/dispersion. By examining the impacts of local spatial costs and interregional trade costs on the structural change at both scales, I find the interdependency of spatial structures across urban-regional scales. Second, I extend the theoretical models into a 2-D geographic model that can scale to real world applications. This geographic model is based on zonal geography connected by transportation networks. An agent-based approach is employed to model the discrete choice for locations and to approximate the equilibrium conditions as those in theoretical models. The simulations confirm that it is consistent with the theoretical models regarding the generated spatial structures. A demonstration application to the Carolinas megaregion is presented as a test bed for the geographic model. Three simulation scenarios presented provide insights to understand the observed pattern of urban-regional developments. In addition, high-performance computing technologies are leveraged to improve the computational performance of the geographic model.

Genre

doctoral dissertations

Subjects--Topics

Geography
Geodesy
Area studies

Degree

Ph.D.

Keywords

Agent-Based Modeling
Economic Agglomeration
Multiscalar Modeling
Polycentric Development
Scale Dependency
Urban and Regional Systems

Subject Area

Geography & Urban Regional Analysis

Advisor(s)

Thill, Jean-Claude

Committee Members

Campbell, Harrison
Tang, Wenwu
Gutierrez, Daniel

Degree Note

Thesis (Ph.D.)--University of North Carolina at Charlotte, 2015.

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Rights Holder Information

Copyright is held by the author unless otherwise indicated.

Identifier

Gong_uncc_0694D_10976

Permalink

http://hdl.handle.net/20.500.13093/etd:784