Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Empowering Urban Governance through Urban Science: Multi-scale Dynamics
  of Urban Systems Worldwide   The current science of cities can provide a useful foundation for future
urban policies, provided that these proposals have been validated by correct
observations of the diversity of situations in the world. However,
international comparisons of the evolution of cities often produce uncertain
results because national territorial frameworks are not always in strict
correspondence with the dynamics of urban systems. We propose to provide
various compositions of systems of cities to better take into account the
dynamic networking of cities that go beyond regional and national territorial
boundaries. Different models conceived for explaining city size and urban
growth distributions enable to establish a correspondence between urban
trajectories when observed at the level of cities and systems of cities. We
test the validity and representativeness of several dynamic models of complex
urban systems and their variations across regions of the world, at the
macroscopic scale of systems of cities. The originality of the approach is in
considering spatial interaction and evolutionary path dependence as major
features in the general behavior of urban entities. The models studied include
diverse and complementary processes, such as economic exchanges, diffusion of
innovations and physical network flows. Complex systems' dynamics is in
principle unpredictable, but contextualizing it regarding demographic, income
and resource components may help in minimizing the forecasting errors.

10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
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The categories of this paper are: nucl-ex
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The categories of this paper are: comp-gas
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The categories of this paper are: bayes-an
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The categories of this paper are: acc-phys