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说明：  使用最小二乘法拟合，数据在程序里。本质是使用fiminuc函数求最小值。欢迎下载。(Use the least square method to fit the data in the program. The essence is to use fiminuc function to find the minimum value. Welcome to download.)

说明：  利用python进行因子分析,因子分析可以进行降维!(Using Python factor analysis, factor analysis can reduce dimensionality!)

适用于ABAQUS的自定义材料子程序，适用于Johnson-Cook材料模型(Apply to custom material ABAQUS subroutine for Johnson-Cook material model)

这是ansys里面apdl语言，用于计算圆柱体开裂(This is the ansys inside apdl language, used for calculating the cylinder craze)

水下机器人在线最小二乘辨识、应急导航策略研究(Recursive Identification of Autonomous Underwater Vehicle for Emergency Navigation)

使用fluent udf编程，实现水滴在空气中的运动描述。(Use fluent udf programming, to achieve the movement of water droplet in the air.)

说明：  vumat案例,可以参考这个vumat子程序自行学习vumat的编写(hi. it is a file for VUMAT. it may help you to learn about it.)

利用最小二乘方法，对三维数据进行平面拟合，并对数据进行误差提出(least square plane fitting )

点扩展函数的获取，最小二乘法估计PSF，验证通过，直接运行(Get the point spread function, least squares estimation PSF, verified by direct operation)

半参数回归模型在测绘领域中的应用，先利用多期数据构建半参数回归模型，然后再预报未来多期数据(Semiparametric regression model applied in the field of surveying and mapping, the first use of multi-phase data to construct semi-parametric regression model, and then predict the future multi-phase data)