so by the addition of diffusion terms and initial-boundary value to the ordinary differential seis epidemic model, we study the corresponding diffusion model systematically.
第一章简要介绍传染病动力学的研究意义及引进具有扩散项的seis传染病模型。
compared to the other software of the same kind both domestic and overseas, the seis system has such major features as information integration, data regional and practical characteristics.
较之国内外同类软件,具有信息的集成性、资料的区域性和数据的实用性等主要特点。
on the basis of experimental research on the seismic behavior of two one - third scale models of mid-rise shear walls, the seis mic behaviors of two models were analyzed.
通过两个中高剪力墻模型的试验研究,比较分析了底部带暗支撑中高剪力墻与普通中高剪力墻的抗震性能。