Basee on the mixing-length theory of convection, macroscopical stress of the turbulence is used in hydrostatics equation of the stellar structural and evolutionary model. 摘要以恒星结构与演化理论中常用的混合程理论为基础，将湍流作用表现出来的宏观应力引入恒星结构与演化模型中的流体静力学平衡方程。
Using the idea and modeling method of cellular automata, we establish an evolutionary model to simulate the process which many nations annex each other through war. 摘要利用元胞自动机的思想和建模方法，建立了模拟多个国家通过战争彼此兼并的演化模型。
