In the context of technological progress and economic transition, the urban spatial structure has consistently undergone dynamic evolution. However, the trajectories of polycentric patterns display significant national and regional variations. It is crucial to examine the dynamic evolution of...

African cities are increasingly seen as key to unlocking national structural transformation and inclusive growth, as they tend to host the majority of the non-productive and informal labour force; attract the lion's share of domestic investment in non-productive sectors; and host different...

We study the tendency to connect to the Internet, and the online and offline shopping behavior of connected persons, to draw inferences about whether the Internet is a substitute or a complement for cities. We document that larger markets have more locally-targeted online content and that...

We document several empirical regularities regarding the evolution of urban structure in the largest U.S. metropolitan areas over the period 1980-1990. These regularities relate to changes in resident population, employment, occupations, as well as the number and size of establishments in...

What impact will terrorism have on America's cities? Historically, large-scale violence has impacted cities in three ways. First, concentrations of people have an advantage in defending themselves from attackers, making cities more appealing in times of violence. Second, cities often make...

One of the most important representations of an urban spatial structure is its density. Indeed, an urban area is defined as a densely populated place with a sizeable number of inhabitants. Yet, despite the fact that the defining element of an urban area is its density, few scholars have...

Most economic activity occurs in cities. This creates a tension between local increasing returns, implied by the existence of cities, and aggregate constant returns, implied by balanced growth. To address this tension, we develop a theory of economic growth in an urban environment. We show that...

In this paper we show that the recent model by Duranton (AER, 2007) performs remarkably well in replicating the city size distribution of West Germany, much better than the simple rank-size rule known as Zipf's law. The main mechanism of this theoretical framework is the "churning" of industries...

Two innovations in the last century have changed dramatically the cost of communicating and transmitting information: The first is the widespread adoption of telephony; the second is the internet. We study the implications of these changes in ICT for urban structure. We find robust evidence that...

We construct a unique data set to analyze whether or not a large temporary shock had an impact on German city growth and city size distribution. Following recent work by Davis and Weinstein (2001) on Japan, we take the strategic bombing of German cities during WWII as our example of such a...

In the last decades, there have been many articles on the spatial structure of metropolitan areas, but a study for explaining driving factors of changes in the spatial structure of metropolitan areas has remained unknown so far. To fill this gap, the article explains the driving factors of these...

How does the structure of metropolitan areas a ect urbanization and welfare? Using the development of urban sub-centers in France in the 1970s, I study the short- and long-term e ects of urban structural changes. To retrieve within metropolitan area e ects, I exploit the fact that out of 11...

In this paper, we study the effects of urban design on pollution and welfare. We build a theoretical model of residential choices with pollution externalities arising from commuting, where the size of the central business district (CBD) and the demand for housing are endogenous. We show that a...

We conduct an empirical analysis to assess the degree of segregation among the different communities in Barcelona taking into account the spatial dependence of the features associated with the neighbor's status. We build an original database by gathering information for the period 1947–2011....

This paper develops a model of the geographic distribution of crime in an urban area. Agents select their occupation, residence, consumption, and housing. The paper is the first to formally study how the location of crime, the residence of workers, and housing prices are affected by the spatial...

The relationship between urban spatial structure and property rights or institutions at large is an understudied topic. This paper summarizes related literature and examines the impacts of urban structure on property rights from five perspectives: property rights autonomy and transportation...

This report aims to highlight diverse sources of urban fragility and approaches to urban transformation, renewal, and resilience. Five city case studies explore the drivers of fragility related to security, development, and governance, before offering examples of policies and programs that can...

Supersede WP 13-25. Congestion costs in urban areas are significant and clearly represent a negative externality. Nonetheless, economists also recognize the production advantages of urban density in the form of positive agglomeration externalities. The long-run equilibrium outcomes in economies...

This paper develops a model of the geographic distribution of crime in an urban area. When the police protect some neighborhoods (concentrated protection), the city becomes segregated. When the police are evenly deployed across the city (dispersed protection), an integrated city emerges. Unequal...

Comprehensive zoning is ubiquitous in U.S. cities, yet we know surprisingly little about its long-run impacts. We provide the first attempt to measure the causal effect of land use regulation over the long term, using as our setting Chicago's first (1923) comprehensive zoning ordinance. Our...

Comprehensive zoning is ubiquitous in U.S. cities, yet we know surprisingly little about its long-run impacts. We provide the first attempt to measure the causal effect of land use regulation over the long term, using as our setting Chicago's first (1923) comprehensive zoning ordinance. Our...

This paper develops a model of the geographic distribution of crime in an urban area. When the police protect some neighborhoods (concentrated protection), the city becomes segregated. When the police are evenly deployed across the city (dispersed protection), an integrated city emerges. Unequal...

Bento, Cropper, Mobarak, and Vinha combine measures of urban form and public transit supply for 114 urbanized areas with the 1990 Nationwide Personal Transportation Survey to address two questions: (1) How do measures of urban form, including city shape, road density, the spatial distribution of...

Introduction: Socialist and Post-Socialist Urbanisms / Lisa B. Welch Drummond and Douglas Young -- Part 1: Housing Experiences and Life Trajectories -- From Socialist Moderns to Urban Poor: Gender and the Housing Question in Post-Reform Vinh City / Christina Schwenkel -- From ABC to...