本文简单介绍了黑洞吸积理论的发展历史与近期进展，研究了热不稳定黑洞吸积盘的含时行为、垂向引力修正后的细盘(Slim)全局结构和作......

用微分方程定性分析方法和数值模拟方法研究9个扰动哈密顿系统的极限环个数和分布情况.结果显示9个系统具有相同的极限环分布,在某......

An optimal utilization problem for a class of renewable resources system is investigated. Firstly, a control problem was......

The troposphere and ocean mixed layer were considered as two components of a dynamic system operated by solar radiation ......

First, the properties of solutions of a typical second-order pendulum-like system with a specified nonlinear function we......