Moment closure and the stochastic logistic model.
The quasi-stationary distribution of the stochastic logistic model is studied in the parameter region where its body is approximately normal. Improved asymptotic approximations of its first three cumulants are derived. It is shown that the same results can be derived with the aid of the moment closure method. This indicates that the moment closure method leads to expressions for the cumulants that are asymptotic approximations of the cumulants of the quasi-stationary distribution.
Nåsell
Ingemar
I
Kungl Tekniska Högskolan (KTH), Institutionen för Matematik, SE-100 44, Stockholm, Sweden. ingemar@kth.se
D001723:Birth Rate; D016015:Logistic Models; D009026:Mortality; D011156:Population Density; D013269:Stochastic Processes; D013548:Sweden