Table 3 Parameter dependence of the \(\mathrm{E} [ \tau ]\), \(\mathrm{Std} [ \tau ]\), and H The notations “+” and “−” mean increase and decrease of these indices
Parameter | Smallest value | Largest value | E[τ] | Std[τ] | H |
|---|---|---|---|---|---|
μ | 0.2 | 0.8 | − | − | + |
σ | 0.1 | 0.7 | + | + | − |
δ | 1.5 | 3.0 | − | − | + |
r | 0.003 | 0.007 | + | + | − |
R | 0.1 | 5.0 | − | − | + |
\(k_{0}\) | 0.01 | 0.25 | + | + | + |
\(k_{1}\) | 0.01 | 0.20 | − | − | + |
a | 0.1 | 0.9 | + | + | − |
b | 0.5 | 1.0 | + | + | − |