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《山东大学学报(理学版)》 ›› 2023, Vol. 58 ›› Issue (10): 75-83.doi: 10.6040/j.issn.1671-9352.0.2023.207

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具有年龄结构的n种群非线性竞争系统的最优生育率控制

周子娟(),雒志学*()   

  1. 兰州交通大学数理学院, 甘肃 兰州 730070
  • 收稿日期:2023-05-08 出版日期:2023-10-20 发布日期:2023-10-17
  • 通讯作者: 雒志学 E-mail:717567249@qq.com;luozhixue2009@126.com
  • 作者简介:周子娟(2000—), 女, 硕士研究生, 研究方向为生物数学及最优控制理论. E-mail: 717567249@qq.com
  • 基金资助:
    国家自然科学基金资助项目(11561041);甘肃省自然科学基金资助项目(1506RJZA071)

Optimal birth control of n species nonlinear competition system with age-structure

Zijuan ZHOU(),Zhixue LUO*()   

  1. School of Mathematics and Physics, Lanzhou Jiaotong University, Lanzhou 730070, Gansu, China
  • Received:2023-05-08 Online:2023-10-20 Published:2023-10-17
  • Contact: Zhixue LUO E-mail:717567249@qq.com;luozhixue2009@126.com

摘要:

研究了一类基于年龄结构的n种群非线性竞争系统的最优生育率控制问题。由不动点定理证明了系统解的存在唯一性, 通过构造极值序列并运用Mazur定理证明了最优生育率控制的存在性, 并利用法锥概念和共轭系统导出了需满足的必要性条件。

关键词: 年龄结构, 竞争种群, 最优生育率控制, 共轭系统, 法锥

Abstract:

The optimal birth control of n species nonlinear competition system with age-structure is investigated. The existence and uniqueness of non-negative solution of the system is proved by using the fixed-point theorem. The extremization sequence is constructed, and Mazur?s theorem are used to verify the existence of the optimal solution of the optimal birth control problem, and the necessity conditions are derived out via normal cone and conjugate system techniques.

Key words: age-structure, competitive population, optimal birth control, adjoint system, normal cone

中图分类号: 

  • O175.1

图1

种群Ⅰ和种群Ⅱ的个体分布密度"

图2

种群Ⅰ和种群Ⅱ的总规模"

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[1] 祁慧敏,雒志学. 具有年龄结构的周期种群动力系统的最优控制[J]. 《山东大学学报(理学版)》, 2023, 58(5): 46-52.
[2] 徐阳,赵春. 基于等级结构的竞争种群系统的最优控制问题[J]. 《山东大学学报(理学版)》, 2021, 56(11): 61-70.
[3] 郑秀娟,雒志学,张昊. 基于尺度结构的非线性竞争种群的最优控制[J]. 《山东大学学报(理学版)》, 2021, 56(11): 51-60.
[4] 张萍,雒志学. 依赖尺度结构的竞争种群的最优出生率控制[J]. 《山东大学学报(理学版)》, 2020, 55(11): 18-25.
[5] 胡永亮,雒志学,梁丽宇,冯宇星. 一类污染环境下具有扩散和年龄结构的随机单种群系统分析[J]. 《山东大学学报(理学版)》, 2019, 54(9): 62-68.
[6] 梁丽宇,雒志学. 周期环境中具有尺度结构的两种群系统的最优控制[J]. 《山东大学学报(理学版)》, 2019, 54(9): 69-75.
[7] 刘江璧,雒志学. 具有年龄结构非线性扩散系统的最优控制[J]. 山东大学学报(理学版), 2016, 51(5): 136-142.
[8] 孙冠颖,梁栋,王文洽 . 有限空间年龄结构种群模型的数值分析[J]. J4, 2006, 41(6): 65-70 .
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