| 人口方程的总和生育率的控制 |
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| 引用本文： | 宋宇婷,王辉. 人口方程的总和生育率的控制[J]. 数学的实践与认识, 2007, 37(11): 127-131 |
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| 作者姓名： | 宋宇婷 王辉 |
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| 作者单位： | 1. 大庆石油学院,数学科学与技术学院,黑龙江,大庆,163318
2. 哈尔滨师范大学,数学系,黑龙江,哈尔滨,150080 |
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| 基金项目： | 黑龙江省自然科学基金;黑龙江省高校骨干教师创新能力资助计划 |
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| 摘 要： | 研究了年龄递进的人口分布参数控制方程,当控制变量β(t)发生改变时,可以找到两个阶梯函数βn(t)和βn(t)同时逼近β(t),并得出当n→∞时,Pn(r,t)和Pn(r,t)也同时逼近P(r,t).
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| 关 键 词： | 人口分布参数控制方程 阶梯函数 逼近 |
| 修稿时间： | 2006-08-03 |
The Control on the Sum of Bearing Rate in the Population System |
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| SONG Yu-ting,WANG Hui. The Control on the Sum of Bearing Rate in the Population System[J]. Mathematics in Practice and Theory, 2007, 37(11): 127-131 |
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| Authors: | SONG Yu-ting WANG Hui |
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| Abstract: | Mainly studying the control equation of population′s distribution parameter.When the control variable,β(t) is changed.We can find two step functions such as n(t) and βn(t),Meanwhile approximating β(t).Moreover,having a result that n→∞,the sum of the population keep invariantly. |
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| Keywords: | the control of the population′s distribution parameter step function approximation the sum of bearing rate |
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