在流行病学模型中使用非对称学来有效确定稳定性
1Department of Mathematics, University of Nebraska-Lincoln, 203 Avery Hall, Lincoln, NE 68588, USA.
Mathematical biosciences and engineering : MBE
|March 14, 2025
概括
这项研究简化了复杂动态系统的稳定性分析,特别是在流行病学中. 它介绍了高效的非对称近似方法,以克服大型系统中的计算挑战.
科学领域:
- 动态系统理论 动态系统理论
- 数学流行病学数学流行病学
- 计算数学 计算数学 计算数学
背景情况:
- 当地稳定性分析对于理解动态系统至关重要.
- 传统的方法 (Routh-Hurwitz) 对于>3个组件的系统,变得计算密集.
- 取决于参数的稳定性分析需要避免显式值替换的方法.
研究的目的:
- 开发和展示动态系统局部稳定性分析的有效方法.
- 解决分析较大的系统 (4-6个组件) 的计算挑战.
- 为在稳定性分析中应用非对称近似提供工具和准则.
主要方法:
- 使用了非对称近似,利用流行病学模型中常见的小参数 (时间尺度的比率).
- 开发了应用这种简化方法的一般工具和指导方针.
- 在流行病学建模中通过两个案例研究证明了这一方法.
主要成果:
- 拟议的非对称近似显著简化了较大的系统的稳定性分析.
- 该方法是高效的,并且在准确性方面引入了最小的成本.
- 提供了实践示例,展示了所描述的工具和指导方针的有效性.
结论:
- 非对称近似为复杂动态系统中的稳定性分析提供了一个计算可行的替代方案.
- 提出的方法对于具有不同时间尺度的流行病学模型尤其有益.
- 这项工作为需要高效执行参数依赖稳定性分析的研究人员提供了有价值的框架.
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