Figure 2From: Dynamics of a predator-prey model with impulsive biological control and unilaterally impulsive diffusion Permanence for System ( 3.2 ) with \(\pmb{y_{1}(0)=0.5}\) , \(\pmb{y_{2}(0)=0.5}\) , \(\pmb{d_{1}=0.6}\) , \(\pmb{a_{2}=0.1}\) , \(\pmb{b_{2}=0.2}\) , \(\pmb{\mu=0.4}\) , \(\pmb{l=0.25}\) , \(\pmb{\tau=1}\) , \(\pmb{D=0.05}\) . (a) Time series of \(y_{1}(t)\); (b) time series of \(y_{2}(t)\); (c) the phase portrait of permanence for System (3.2).Back to article page