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  Detecting contagious spreading of urban innovations on the global city network

Kitzmann, N., Romanczuk, P., Wunderling, N., Donges, J. F. (2022): Detecting contagious spreading of urban innovations on the global city network. - European Physical Journal - Special Topics, 231, 9, 1609-1624.
https://doi.org/10.1140/epjs/s11734-022-00470-4

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 Creators:
Kitzmann, Niklas1, Author              
Romanczuk, Pawel2, Author
Wunderling, Nico1, Author              
Donges, Jonathan Friedemann1, Author              
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1Potsdam Institute for Climate Impact Research, Potsdam, ou_persistent13              
2External Organizations, ou_persistent22              

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 Abstract: Only a fast and global transformation towards decarbonization and sustainability can keep the Earth in a civilization-friendly state. As hotspots for (green) innovation and experimentation, cities could play an important role in this transition. They are also known to profit from each other’s ideas, with policy and technology innovations spreading to other cities. In this way, cities can be conceptualized as nodes in a globe-spanning learning network. The dynamics of this process are important for society’s response to climate change and other challenges, but remain poorly understood on a macroscopic level. In this contribution, we develop an approach to identify whether network-based complex contagion effects are a feature of sustainability policy adoption by cities, based on dose-response contagion and surrogate data models. We apply this methodology to an exemplary data set, comprising empirical data on the spreading of a public transport innovation (Bus Rapid Transit Systems) and a global inter-city connection network based on scheduled flight routes. Although our approach is not able to identify detailed mechanisms, our results point towards a contagious spreading process, and cannot be explained by either the network structure or the increase in global adoption rate alone. Further research on the role of a city’s abstract “global neighborhood” regarding its policy and innovation decisions is thus both needed and promising, and may connect with research on social tipping processes. The methodology is generic, and can be used to compare the predictive power for innovation spreading of different kinds of inter-city network connections, e.g. via transport links, trade, or co-membership in political networks.

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Language(s): eng - English
 Dates: 2022-02-012022-02-212022-07
 Publication Status: Finally published
 Pages: 16
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1140/epjs/s11734-022-00470-4
PIKDOMAIN: RD1 - Earth System Analysis
Organisational keyword: FutureLab - Earth Resilience in the Anthropocene
Research topic keyword: Cities
Research topic keyword: Complex Networks
Research topic keyword: Mitigation
Regional keyword: Global
Model / method: Open Source Software
MDB-ID: yes - 3296
OATYPE: Hybrid - DEAL Springer Nature
 Degree: -

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Title: European Physical Journal - Special Topics
Source Genre: Journal, SCI, Scopus, p3
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Pages: - Volume / Issue: 231 (9) Sequence Number: - Start / End Page: 1609 - 1624 Identifier: CoNE: https://publications.pik-potsdam.de/cone/journals/resource/150617
Publisher: Springer