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Growth, innovation, scaling, and the pace of life in cities
Humanity has just crossed a major landmark in its history with the majority of people now living in cities. Cities have long been known to be society's predominant engine of innovation and wealthExpand
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Urban Scaling and Its Deviations: Revealing the Structure of Wealth, Innovation and Crime across Cities
With urban population increasing dramatically worldwide, cities are playing an increasingly critical role in human societies and the sustainability of the planet. An obstacle to effective policy isExpand
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The Production Recipes Approach to Modeling Technological Innovation: An Application to Learning by Doing
We do two things in this paper. First, we put forward some elements of a microeconomic theory of technological evolution. This involves adding nascent (essentially undiscovered) technologies to theExpand
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Metropolitan patenting, inventor agglomeration and social networks: A tale of two effects
We investigate the separate effects on metropolitan patenting of inventor agglomeration and the structure of social networks linking inventors within and across metropolitan areas in the UnitedExpand
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Optimal search on a technology landscape
TLDR
In this paper we explicitly treat this apsect of the firm's search for technological improvements by introducing a "technology landscape" into an otherwise standard dynamic programming setting where the optimal strategy is to assign a reservation price to each possible technology. Expand
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Does Size Matter? Scaling of CO2 Emissions and U.S. Urban Areas
Urban areas consume more than 66% of the world’s energy and generate more than 70% of global greenhouse gas emissions. With the world’s population expected to reach 10 billion by 2100, nearly 90% ofExpand
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Urban scaling in Europe
Over the last few decades, in disciplines as diverse as economics, geography and complex systems, a perspective has arisen proposing that many properties of cities are quantitatively predictable dueExpand
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Identifying the sources of technological novelty in the process of invention
TLDR
We discretize technologies and identify four distinct sources of technological novelty, including combination, recombination, origination, and de novo creation. Expand
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Invention as a combinatorial process: evidence from US patents
TLDR
Invention has been commonly conceptualized as a search over a space of combinatorial possibilities. Expand
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Night-Time Light Data: A Good Proxy Measure for Economic Activity?
Much research has suggested that night-time light (NTL) can be used as a proxy for a number of variables, including urbanization, density, and economic growth. As governments around the world eitherExpand
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