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Elementary processes governing the evolution of road networks
TLDR
In this article, a unique data set regarding almost 200 years of evolution of the road network in a large area located north of Milan (Italy) was used to investigate the role of high-centrality roads in urban growth.Abstract:
Urbanisation is a fundamental phenomenon whose quantitative characterisation is still inadequate. We report here the empirical analysis of a unique data set regarding almost 200 years of evolution of the road network in a large area located north of Milan (Italy). We find that urbanisation is characterised by the homogenisation of cell shapes, and by the stability throughout time of high-centrality roads which constitute the backbone of the urban structure, confirming the importance of historical paths. We show quantitatively that the growth of the network is governed by two elementary processes: (i) `densification', corresponding to an increase in the local density of roads around existing urban centres and (ii) `exploration', whereby new roads trigger the spatial evolution of the urbanisation front. The empirical identification of such simple elementary mechanisms suggests the existence of general, simple properties of urbanisation and opens new directions for its modelling and quantitative description.read more
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MonographDOI
Complex Networks: Principles, Methods and Applications
TL;DR: This textbook presents a detailed overview of the new theory and methods of network science, covering algorithms for graph exploration, node ranking and network generation, among the others, and allows students to experiment with network models and real-world data sets.
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Cities and Complexity
TL;DR: Bespreking van:,Cities and Complexity: Making Intergovernmental Decisions Thousand Oaks, CA:Sage Publications,1999 0 7619 1165 0 as discussed by the authors
References
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Journal ArticleDOI
Growth, innovation, scaling, and the pace of life in cities
Luís M. A. Bettencourt,José Lobo,Dirk Helbing,Christian Kühnert,Geoffrey B. West,Geoffrey B. West +5 more
TL;DR: Empirical evidence is presented indicating that the processes relating urbanization to economic development and knowledge creation are very general, being shared by all cities belonging to the same urban system and sustained across different nations and times.
Book
Sustainability and Cities: Overcoming Automobile Dependence
Peter Newman,Jeffrey Kenworthy +1 more
TL;DR: The concept of sustainability and its relationship to cities the problem of automobile dependence at the end of the 20th century the pattern of car dependence and global cities a vision of reduced automobile dependence greening the automobile dependent city - urban ecology and auto dependence promoting sustainable urban change ethics, spirituality and community in the city as mentioned in this paper.
Journal ArticleDOI
The emergence of land change science for global environmental change and sustainability
TL;DR: The six articles of the special feature are introduced and situated within these components of study of land change: observation and monitoring; understanding the coupled system—causes, impacts, and consequences; modeling; and synthesis issues.
Journal ArticleDOI
Multiscale mobility networks and the spatial spreading of infectious diseases
TL;DR: In this paper, the authors study the interplay between short-scale commuting flows and long-range airline traffic in shaping the spatio-temporal pattern of a global epidemic.
Journal ArticleDOI
The size, scale, and shape of cities.
TL;DR: This paper presents an integrated theory of how cities evolve, linking urban economics and transportation behavior to developments in network science, allometric growth, and fractal geometry, which provides new insights into the resource limits facing cities in terms of the meaning of density, compactness, and sprawl.