title: Spatial-dynamic population systems:  analysis and projection.
abstract: "In this paper a set of more-detailed multiregional population accounts is proposed to specify more realistically the exposure time of populations at risk for various components of population change.  The concepts of population-time at risk and forward demographic rates based on the initial population are discussed.  The relations of the forward demographic rates defined in this paper with the occurrence-exposure demographic rates are discussed.  A more precise and straightforward multiregional population model is developed on the basis of forward demographic rates.  The model is also expressed in the familiar matrix form of multiregional, cohort-survival models."  Some applications of the model are made to data for China.
mesh_terms: D001208:Asia; D001695:Biology; D002681:China; D003710:Demography; D003906:Developing Countries; D005202:Asia, Eastern; D005843:Geography; D008962:Models, Theoretical; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics; D012106:Research; D012307:Risk Factors; D013997:Time Factors
keywords: Asia; Biology; China; Demographic Factors; Developing Countries; Eastern Asia; Geographic Factors; Models, Theoretical; Multiregional Analysis; Population; Population At Risk; Population Dynamics; Research Methodology; Risk Factors; Time Factors