UEL_XFEM

基于最小二乘估计的圆心拟合，可计算出圆心坐标及半径(Estimates based on least squares fitting of the center of a circle, calculate the center coordinates and radius)

说明：  使用matlab进行 有限元计算，内含多种方式方法，欢迎交流讨论(Finite element calculation using matlab)

最小二乘法拟合形如f(x)=(a+bx)/(1+cx)的函数（9.2.2(1))，并解决人口预测问题(9.2.2(2))(Least squares fit of the form f (x) = (a+bx)/(1+cx) function (9.2.2 (1)), and to solve the population prediction problem (9.2.2 (2)))

用于CFD模拟室内热舒适性，利用用户自定义编写室内热舒适评价指标PMV，对模拟分析结果进行处理，得出室内各处的PMV值。(This is used to simuate indoor thermal comfort performance through CFD.)

说明：  遗传算法反演程序源代码，主要反演瞬变电磁数据(Code for GA)

Finding special triples of the form (n, n + 1, n + 2) Write a program that finds all triples of consecutive positive three-digit integers each of which is the sum of two squares, that is, all triples of the form (n, n + 1, n + 2) such that: • n, n+1 and n+2 are integers at least equal to 100 and at most equal to 999 • eachofn,n+1andn+2isoftheforma2+b2.(Finding special triples of the form (n, n+ 1, n+ 2) Write a program that finds all triples of consecutive positive three-digit integers each of which is the sum of two squares, that is, all triples of the form (n, n+ 1, n+ 2) such that: • n, n+1 and n+2 are integers at least equal to 100 and at most equal to 999 • eachofn,n+1andn+2isoftheforma2+b2.)

说明：  遗传算法用来求解带容量的车辆路径问题，用c++完成的代码(The genetic algorithm is used to solve the vehicle routing problem with capacity. The code is completed by c++.)

用C++实现排队论中M/M/1模型。简单方便。(Using C++ implementation in the M/M/1 queuing theory model. Easy and convenient.)

里面包含了随机矩阵理论里经典的仿真，如marcenko-pastur law,tracy-widom law等(It contains some classical simulationa in the random matrix theory，such as marcenko-pastur law,tracy-widom law)

说明：  LMF方法解非线性方程组，有例子，可以直接运行！(LMF method to solve nonlinear equations, there are examples, can be directly run!)