Skip to main content
Figure 7 | Advances in Difference Equations

Figure 7

From: The roles of maturation delay and vaccination on the spread of Dengue virus and optimal control

Figure 7

The relationships of ψ and σ , and ψ and θ : (a)  \(\pmb{\psi=0.6}\) and \(\pmb{\sigma=0.25}\) , \(\pmb{\psi=0.5}\) and \(\pmb{\sigma=0.2}\) , \(\pmb{\psi=0.4}\) and \(\pmb{\sigma=0.15}\) , \(\pmb{\psi=0.3}\) and \(\pmb{\sigma =0.1}\) , \(\pmb{\psi=0.2}\) and \(\pmb{\sigma=0.05}\) ; (b)  \(\pmb{\psi=0.1}\) and \(\pmb{\theta =1/365}\) , \(\pmb{\psi=0.2}\) and \(\pmb{\theta=1/200}\) , \(\pmb{\psi=0.3}\) and \(\pmb{\theta =1/100}\) , \(\pmb{\psi=0.4}\) and \(\pmb{\theta=1/50}\) , \(\pmb{\psi=0.5}\) and \(\pmb{\theta=1/20}\) .

Back to article page