THE STRATIFIED SEMI-STATIONARY POPULATION
成果类型：
Article
署名作者：
VAJDA, S
刊物名称：
BIOMETRIKA
ISSN/ISSBN：
0006-3444
DOI：
10.1093/biomet/34.3-4.243
发表日期：
1947
页码：
243254
关键词：
摘要：
A population subject to mortality dependent on age and which is supplied with entrants each year so as to keep the total population constant tends, in general, to a limiting age distribution, the intrinsic stationary population. If, in addition, the population is stratified and members of each stratum subject each year to promotion to the next higher stratum on the basis of age or of seniority in grade, a semi-stationary population results when the totals of each stratum can be held constant while the age distributions oscillate. Necessary conditions are given for the possibility of attaining such populations.