title: New approximations to the Malthusian parameter.
abstract: Approximations to the Malthusian parameter of an age-dependent branching process are obtained in terms of the moments of the lifetime distribution, by exploiting a link with renewal theory. In several examples, the new approximations are more accurate than those currently in use, even when based on only the first two moments. The new approximations are extended to include a form of asymmetric cell division that occurs in some species of yeast. When used for inference, the new approximations are shown to have high efficiency.
authors.affiliation: Institute of Mathematics, Statistics and Actuarial Science, University of Kent, Canterbury, Kent CT2 7NF, UK. M.S.Ridout@kent.ac.uk
authors.forename: M S
authors.initials: MS
authors.lastname: Ridout
authors.forename: D J
authors.initials: DJ
authors.lastname: Cole
authors.forename: B J T
authors.initials: BJ
authors.lastname: Morgan
authors.forename: L J
authors.initials: LJ
authors.lastname: Byrne
authors.forename: M F
authors.initials: MF
authors.lastname: Tuite
mesh_terms: D001699:Biometry / Q000379:methods*; D002453:Cell Cycle; D002455:Cell Division; D008954:Models, Biological; D015233:Models, Statistical; D011157:Population Dynamics; D015003:Yeasts / Q000166:cytology