摘要
通过考察陇南市人口的环比增长率,建立了人口增长的二阶差分方程模型,以陇南市1970-2015年的人口统计数据为基础,借助最小二乘法,估计出了模型中的参数,并利用该模型对陇南市"十三五"人口数量给出了预测.
The second-order difference equation model of population growth is established by investigating the cyclic growth rate of Longnan city. Based on the population statistics of Longnan city from 1970 to 2015, the parameters of the model are estimated by means of the least square method, and the model is used to predict the population of Longnan city during the 13 th Five-Year Plan.
作者
李娟
杜争光
LI Juan;DU Zheng-guang(Department of Mathematics,Longnan Teachers College,Chengxian 742500,Gansu,China)
出处
《兰州文理学院学报（自然科学版）》
2018年第5期31-34,共4页
Journal of Lanzhou University of Arts and Science(Natural Sciences)
基金
陇南市2016年科技指导性计划项目(2016-24
2016-23)
陇南师范高等专科学校2016年度教学改革项目(JXGG201641)
关键词
差分方程
环比增长
稳定性
可靠性
difference equation
cyclic growth
stability
reliability
