title: Modification of the age transition model with implications for regional migration rates and their influence on the reproduction structure of a population.
abstract: "Models are developed for the dynamics of the age structure of the population of a region into which there are migration flows from other regions with different fertility coefficients.  The model is explored in detail for a three-age-group population.  A number of optimisation problems are formulated which can be used for various planning purposes."
authors.forename: A P
authors.initials: AP
authors.lastname: Afanasyev
authors.forename: S P
authors.initials: SP
authors.lastname: Chebotarev
authors.forename: A N
authors.initials: AN
authors.lastname: Ryazantsev
mesh_terms: D017677:Age Distribution; D000367:Age Factors; D003710:Demography; D004641:Emigration and Immigration; D005298:Fertility; D005843:Geography; D008962:Models, Theoretical; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics; D012098:Reproduction; D012106:Research
keywords: Age Distribution--changes; Age Factors; Demographic Factors; Fertility; Geographic Factors; Mathematical Model; Migration; Models, Theoretical; Population; Population Characteristics; Population Dynamics; Reproduction; Research Methodology