Figure 3From: The bifurcation analysis and optimal feedback mechanism for an SIS epidemic model on networksThe average infected densities \(I=\sum_{k=1}^{n} p(k)I _{k}(t)\) with respect to five kinds of constant control \(u_{k}(t)=u\) and the optimal control \(u_{k}^{*}(t)\)Back to article page