回归的各种分析实例以及matlab代码，包括各种数学应用，比如线性回归，非线性回归，逐步回归-Examples of regression analysis, as well as a variety of matlab code, including a variety of mathematical applications such as linear regression, nonlinear regression, stepwise regression

非归一化的非线性薛定谔方程的数值解和图像处理-The numerical solution of non-normalized nonlinear Schrö dinger equation and image processing

非线性动力学、分岔 Matlab 程序实现，弹簧质量系统在简谐激励作用下的受迫振动，弹簧的恢复力F与变形x的关系为F=kx3，动力学方程为...30cosmxcxkxFwt++= 其中，给定参数，1m=，0.3c=，1.0k=，1w=，初始条件为(0)3.0x=，.(0)4.0x=设系统的动态参数为F0，绘出系统状态变量随参数变化分岔图，绘图参数对应的系统各周期及混沌状态的时间历程图、相轨迹图、Poincare映射图-Nonlinear dynamics, bifurcation Matlab

这段代码利用分步傅里叶方法求解非线性薛定谔方程的matlab程序-This code solves the NLS equation with the split-step method

土木工程领域，非线性杆系有限元matlab程序。参考书籍为普林斯顿大学教授编写的NFEM讲义。-Civil engineering, nonlinear finite element matlab program. Reference books for Princeton University professor NFEM written handouts.