zhangxiandajuzhenxitidaan

说明：  帮助你轻松实现零基础掌握lammps，实现分子动力学的各项功能(Help you easily achieve zero foundation master lammps)

线接触滑块润滑，基于有限差分法，采用的是中间差分的方法，求解油膜厚度(Line contact slider lubrication, based on the finite difference method, using an intermediate difference method for solving film thickness)

说明：  三维FMM射线追踪程序，计算得到核矩阵 时间场(Three - dimensional ray tracing program, the calculation of the kernel matrix)

阵列处理作业，MVDR或者其他高分辨方法，由于信号源无法确定，造成估计误差，采用对角加载的 增加单位阵法 ,以及 六源准则法 获取优化结果。(Array processing, MVDR, or other high-resolution method, the source can not be determined, resulting in the estimated error, the use of diagonal loading ' to increase the unit matrix method' , and ' six-source criteria method' to obtain optimal results.)

说明：  独立分析 主成分分析 可以提取矩阵独立成分与主成分，显示空间特征与时间特征以及对应的奇异分析用于计算能进行奇异值分解等。主要用于数值的提取计算等。(It can extract the independent and principal components of matrix, display the spatial and temporal characteristics, and use the corresponding singular analysis to calculate the singular value decomposition. It is mainly used for extraction and calculation of numerical value.)

Dr. Liu 在《光滑粒子流体动力学--一种无网格方法》一书中提供的光滑粒子流体动力学（SPH）源程序，采用Fortran语言编写，用于计算可压缩流体力学问题。(Dr. Liu in the " Smooth Particle Hydrodynamics- a meshless method," a book provided by the smooth particle hydrodynamics (SPH) source code, using Fortran language, used to calculate the fluid flow problem.)

说明：  计算时程信号数据的快速傅里叶变换，进行频谱分析(The fast Fourier transform of time history signal data is calculated and the spectrum analysis is carried out)

自己编的5种调制信号，混沌的判断指标Lyapunov指数计算,信号维数的估计。( Own five modulation signal, Chaos indicator for Lyapunov index calculation, Signal dimension estimates.)

说明：  一个用C语言编写的求混沌序列的源程序,挺好的!(a C language for the chaotic sequence of the source, very good!)

数值计算实例，主要有LU分解，龙格库塔法，高斯分解法，欧拉法，曲线拟合，曲线插值(Numerical example)