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. 2020 Jun 20;139:110041. doi: 10.1016/j.chaos.2020.110041

Fig. 4.

Fig. 4

The curves of the harmonic function under different harmonic coefficients. The harmonic function is presented to tackle the redundancy count of infectors and controlled by the harmonic coefficient γ which is determined by the population density and natural environment of the targeted region. The horizontal axis denotes the ratio of the infected cases to the total population.