simplecalculator

使用lasso方法，对特征矩阵进行优化特征选择（向量选择），使其达到最优。(Use lasso method, optimize the characteristic matrix feature selection (vector selection), to the optimal.)

用C语言编写的Fluent UDF实例，包含Adjust宏，profile宏等八个实例教程，快速上手(The UDF is for computational fluid dynamics software Fluent, it concludes the Profile.c,the Adjust.c)

P-R方程编程源代码，用于热力学相平衡计算，计算泡点和露点，欢迎大家下载！(PR equation programming source code, used to calculate the thermodynamic equilibrium, the bubble point and dew point calculation, welcome to download!)

说明：  一个薄板样条模型（thin plate spline）matlab源代码(A thin plate spline model (thin plate spline) matlab source code)

说明：  用em算法估计高斯混合模型参数，matlab代码(Estimation of Gaussian mixture model parameters by EM algorithm)

Fluent 中短语模拟水的受热蒸发相变的UDF程序代码(the UDF for phase change of water)

求解线性方程组，高斯消去法精确求解出任意个方程组的解，(Solving linear equations, Gaussian elimination exact solution,)

计算多材料单元平均应力应变,用于提取计算等效弹性模量 泊松系数(Calculate the average stress-strain of multi-material elements)

求解二阶变系数常微分方程,主要用于涡激振动中频率响应的计算(Solving second-order ordinary differential equations with variable coefficients)

基于abaqus编辑的用户自定义单元，二维四节点单元(the uel for 2d ELEMENT based on abaqus)