Selected article for: "expected number and reproductive number"

Author: Andrew J Stier; Marc G Berman; Luis M. A. Bettencourt
Title: COVID-19 attack rate increases with city size
  • Document date: 2020_3_27
  • ID: aeminwf0_53
    Snippet: where, in the last equality, we introduced the scaling relation for the average degree with city population size, k(N ) = k 0 N δ . We see therefore that in general the reproductive number is expected to be a function of city size N , and to be larger in bigger cities. How much bigger, depends on the behavior of the log-variance, σ 2 , and whether this parameter is city size dependent, an issue that can generates statistical corrections beyond .....
    Document: where, in the last equality, we introduced the scaling relation for the average degree with city population size, k(N ) = k 0 N δ . We see therefore that in general the reproductive number is expected to be a function of city size N , and to be larger in bigger cities. How much bigger, depends on the behavior of the log-variance, σ 2 , and whether this parameter is city size dependent, an issue that can generates statistical corrections beyond "mean-field" to the simplest expectations from urban scaling theory with δ 1/6.

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