This paper, beginning with the general age-dependent population dynamics, discusses the well-pose of stationary solution.
本文从最一般的人口动力系统出发，讨论其稳态解的适定性。
The present paper is concerned with the optimal control problem for an improved nonlinear age-dependent population dynamics.
研究某一类改进的关于年龄结构的非线性种群系统的最优控制问题。
This paper discusses the problem of the optimal harvesting control problem for a semilinear age-dependent population diffusion system.
研究了一类半线性时变种群扩散系统的最优收获问题，证明了最优收获控制的存在性。
Dependent population of the county fiscal 9120, including serving 7036 people, 2084 were retired.
全县财政供养人口9120人，其中在职7036人，离退休2084人。
Dependent population of the county fiscal 9120, including serving 7036 people, 2084 were retired.
全县财政供养人口9120人，其中在职7036人，离退休2084人。
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