本文通过对状态方程的定性分析，给出关于离散动态系统的若干定理，以及在生态系统与管理系统中的应用。
In this paper, we give the theorems of dynamic system as well as applications in the ecosystem and the management system by the qualitative analysis for the state equations.
本文通过对现有研究进行比较分析，提炼出金融危机传染效应的定义，并定性分析了金融危机传染效应的微观和宏观基础。
This paper compares the current literatures from which abstract the contagion definition, then analyzes the micro and macro base of contagion effect.
本文通过对某钢铁企业南变电力系统的稳定性分析，给出了低频减载和区域安全稳定控制两种方案。
Through analysis of the stability of NanBian power supply system in a steel enterprise, under-frequency load-shedding plans and regional security and stability control plans are adopted in this paper.
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