Quantifying Urban Centrality
Author: Rafael Henrique Moraes Pereira
Publisher:
Published: 2012
Total Pages: 32
ISBN-13:
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Quantifying Urban Centrality
Author: Rafael Henrique Moraes Pereira
Publisher:
Published: 2015
Total Pages:
ISBN-13:
DOWNLOAD EBOOKThis study introduces a new measure of urban centrality. It identifies distinct urban structures from different spatial patterns of jobs and resident population. The proposed urban centrality index constitutes an extension of the spatial separation index (MIDELFART-KNARVIK et al., 2000). It is suggested that urban structure should be more accurately analyzed by considering a centrality scale (varying from extreme monocentricity to extreme polycentricity) rather than a binary variable (monocentric or polycentric). The proposed index controls for differences in size and shape of the geographic areas for which data is available, and can be calculated using different variables, such as employment and population densities and trip generation rates. The properties of the index are illustrated in simulated artificial data sets. Simulation results for hypothesized urban forms are compared to other similar measures proposed by previous literature. The index is then applied to the urban structure of four different metropolitan areas: Pittsburgh and Los Angeles in the United States; São Paulo, Brazil; and Paris, France, The index is compared to other traditional spatial agglomeration measures, such as global and local Moran's I, and density gradient estimations.
Power Centrality as a Relational Measure of Urban Hierarchy
Author: Francisco Javier Humeres Marfan Humeres M.
Publisher:
Published: 2014
Total Pages: 62
ISBN-13:
DOWNLOAD EBOOKPower Centrality, a measure of node importance within a network, is borrowed from the field of Social Network Analysis and applied to the assessment of Urban Hierarchy. Based on the overlaps of human activity between places, Power Centrality is tried as a method for measuring a particular feedback property: How well connected are places to other well connected places. In this research Power Centrality is used to assess a recent model of Urban Structure: The Splintering Urbanism Theory of Graham and Marvin (2001). This theory posits that the contemporary city is a fragmented agglomeration of isolated urban pieces, where distant but valuable fragments are highly connected between them, bypassing their less valuable surroundings. The causal explanation provided by Graham and Marvin is centered on their concept of premium networks: Networks customized for valuable (users in terms of income or power). The reach of this theory is assessed by studying the case of a mass transit system in a developing country: The Metro or subway of Santiago de Chile. The spatial hypothesis of Graham and Marvin is tested empirically through the use of the Power Centrality Measure, applied to a dataset of 242.000 twitter statuses generated by Metro users, while the causal explanation is evaluated by comparing the results with an unbiased sample of 110,000 statuses. Power Centrality allowed the identification of central locations that by standard measures of spatial concentration would have remained undetected. Furthermore, the results evidenced how Metro could be acting as a mass public bypass that connects these emergent centralities, challenging the concept of premium networks posited by Graham and Marvin.
Urban Network Analysis
Author: Andres Sevtsuk
Publisher:
Published: 2018-08-20
Total Pages:
ISBN-13: 9780692172773
DOWNLOAD EBOOKReference and user guide for the Urban Network Analysis plugin for Rhinoceros 3D software, along with case study applications.
Measuring Urban Design
Author: Reid Ewing
Publisher: Island Press
Published: 2013-07-20
Total Pages: 0
ISBN-13: 9781610911931
DOWNLOAD EBOOKWhat makes strolling down a particular street enjoyable? The authors of Measuring Urban Design argue it's not an idle question. Inviting streets are the centerpiece of thriving, sustainable communities, but it can be difficult to pinpoint the precise design elements that make an area appealing. This accessible guide removes the mystery, providing clear methods to measure urban design. In recent years, many "walking audit instruments" have been developed to measure qualities like building height, block length, and sidewalk width. But while easily quantifiable, these physical features do not fully capture the experience of walking down a street. In contrast, this book addresses broad perceptions of street environments. It provides operational definitions and measurement protocols of five intangible qualities of urban design, specifically imageability, visual enclosure, human scale, transparency, and complexity. The result is a reliable field survey instrument grounded in constructs from architecture, urban design, and planning. Readers will also find a case study applying the instrument to 588 streets in New York City, which shows that it can be used effectively to measure the built environment's impact on social, psychological, and physical well-being. Finally, readers will find illustrated, step-by-step instructions to use the instrument and a scoring sheet for easy calculation of urban design quality scores. For the first time, researchers, designers, planners, and lay people have an empirically tested tool to measure those elusive qualities that make us want to take a stroll. Urban policymakers and planners as well as students in urban policy, design, and environmental health will find the tools and methods in Measuring Urban Design especially useful.
Cities and Climate Change
Author: Daniel Hoornweg
Publisher: World Bank Publications
Published: 2011-06-02
Total Pages: 329
ISBN-13: 0821386670
DOWNLOAD EBOOKThis book provides the latest knowledge and practice in responding to the challenge of climate change in cities. Case studies focus on topics such as New Orleans in the context of a fragile environment, a framework to include poverty in the cities and climate change discussion, and measuring the impact of GHG emissions.
Spatial Data Analysis
Author: Robert P. Haining
Publisher: Cambridge University Press
Published: 2003-04-17
Total Pages: 462
ISBN-13: 9780521774376
DOWNLOAD EBOOKSpatial Data Analysis: Theory and Practice, first published in 2003, provides a broad ranging treatment of the field of spatial data analysis. It begins with an overview of spatial data analysis and the importance of location (place, context and space) in scientific and policy related research. Covering fundamental problems concerning how attributes in geographical space are represented to the latest methods of exploratory spatial data analysis and spatial modeling, it is designed to take the reader through the key areas that underpin the analysis of spatial data, providing a platform from which to view and critically appreciate many of the key areas of the field. Parts of the text are accessible to undergraduate and master's level students, but it also contains sufficient challenging material that it will be of interest to geographers, social and economic scientists, environmental scientists and statisticians, whose research takes them into the area of spatial analysis.
An Introduction to Regional Economics
Author: Edgar Malone Hoover
Publisher: McGraw-Hill College
Published: 1984
Total Pages: 480
ISBN-13: 9780075544401
DOWNLOAD EBOOKCentrality and Cities
Author: James Bird
Publisher: Routledge
Published: 2013-04-15
Total Pages: 223
ISBN-13: 1135673802
DOWNLOAD EBOOKProfessor Bird presents a synthesis of the many approaches to the study of a central featuer of modern life - the city, including its distant past and its future. He sees centrality as a mental projection on to space, and discusses the concept in relation to three types of its manifestation in spatial terms: the city as centre of a tributary region; the centres and central areas of cities themselves; and the city considered as a centre or gateway for other distant regions, often overseas. This book should do much to unravel the funamental similarities between cities of the world while recognizing the myriad variations upon a common theme. This book was first published in 1977.
Mathematical Analysis of Urban Spatial Networks
Author: Philippe Blanchard
Publisher: Springer Science & Business Media
Published: 2008-10-23
Total Pages: 192
ISBN-13: 3540878297
DOWNLOAD EBOOKCities can be considered to be among the largest and most complex artificial networks created by human beings. Due to the numerous and diverse human-driven activities, urban network topology and dynamics can differ quite substantially from that of natural networks and so call for an alternative method of analysis. The intent of the present monograph is to lay down the theoretical foundations for studying the topology of compact urban patterns, using methods from spectral graph theory and statistical physics. These methods are demonstrated as tools to investigate the structure of a number of real cities with widely differing properties: medieval German cities, the webs of city canals in Amsterdam and Venice, and a modern urban structure such as found in Manhattan. Last but not least, the book concludes by providing a brief overview of possible applications that will eventually lead to a useful body of knowledge for architects, urban planners and civil engineers.
