Discrete Dynamics in Nature and Society

Research Article

Dynamics of a Delay-Varying Computer Virus Propagation Model

Figure 3

Distribution of computers versus time when 𝑏 = 2 0 , 𝛽 = 0 . 0 2 , 𝛾 = 0 . 6 , 𝜇 = 0 . 1 , a n d 𝜎 = 7 . 5 , where 𝑅 0 = 2 . 8 6 > 1 and 𝜎 ∗ ≈ 5 . 9 1 < 𝜎 satisfies the unstable condition for the virus equilibrium 𝐸 ∗ .
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