研究了两类不同免疫方式下具有饱和传染力的SIR流行病模型的动力学行为。
The dynamic behaviors of a kind of SIR epidemic model with two different vaccination strategies and saturation infectious force are researched.
它被广泛应用于生物技术、药物动力学、物理、经济、种群动力学、流行病学等领域。
It is widely applied in various domains such as biological technology, medicine dynamics, physics, economy, population dynamics and epidemiology.
结论根据血流动力学原理提示血管横切面积轻微缩小足以使血流量明显降低，这在老年ed的流行病学中起着重要作用。
Conclusions The slightly narrowed vessel section area can cause notable lowered blood flow volume and act an important role on Ed epidemiology of elderly patients.
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