The division of labor between and within countries is driven by two fundamental forces, comparative advantage and increasing returns. We set up a simple Ricardian model with a Marshallian input sharing mechanism to study their interplay. The key insight that emerges is that the interaction...

This paper revisits a classical inquiry by addressing the question of localization and urbanization economies. We propose that specialization and diversity may offer externalities operating at different spatial scales. Using high-resolution geo-coded plant-level panel data for Swedish cities...

Standard approaches to studying industrial agglomeration have been in terms of scalar measures of agglomeration within each industry. But such measures often fail to distinguish spatial scales of agglomeration. In a previous paper, Mori and Smith (2014) proposed a pair of quantitative measures...

Based on corrected nighttime light data and firm-level data from 1998 to 2010, we use an urban sprawl index that properly captures the subtle differences in density distribution within cities, extend a hyperbolic distance specification within a parametric stochastic framework to the analysis of...

In a model of horizontal product differentiation, we show that local monopolied may exist under free entry when capital is perfectly mobile. In contrast both with the situation of restricted entry and with the zero-profit approach to free entry outcomens of Salop 91979), the unit profit rate of...

Geographical Information Systems (GIS) are an essential tool to integrate and manage large amounts of data (statistical and graphical) and to visualise the modelling efforts of the contemporary city. The further use of spatial analysis methods, in particular the exploratory analysis of data and...

This study proposes new family-centered measures of access to early care and education (ECE) services with respect to quantity, cost, and quality and uses them to assess disparities in access across locations and socio-demographic groups in Minnesota. These measures are distance-based and use...

When assigning a concession contract, the regulator faces the issue of setting the concession length. Another key issue is whether or not the concessionare should be allowed to set the timing of new investments. In this paper we investigate the impact of concession length and investment timing...

We extend the theory of monopoly regulation under imperfect information to the case of customer, rather than investor, ownership. The firm's manager can exert two types of effort - a contractible effort to reduce costs, and a non-contractible effort to increase quality. The former decreases...