fracture_network

说明：  进行PQ分解，计算电力系统潮流的有效方法，应用广泛(PQ decomposition is an effective method for calculating power flow in power system.)

相场法基础书籍的配套计算代码，对于学习相场法的基础同学来说极其有用(The supporting calculation code of the phase field basic book is extremely useful for the students who are studying the basic method of the phase field method.)

包括最小二乘法、SVM、神经网络、1_k近邻法,合成孔径雷达（SAR)目标成像仿真，主要是基于mtlab的程序。( Including the least squares method, the SVM, neural networks, 1 _k neighbor method, Synthetic Aperture Radar (SAR) imaging simulation target, Mainly based on the mtlab procedures.)

gmres 方法。视图求解线性方程组A*x=b的解x。nXn的稀疏矩阵A必须是方程且应是大型稀疏矩阵。列向量b的长度必须为n。(gmres method. View solving linear equations A* x = b the solution x. nXn sparse matrix A must be equation and should be large sparse matrix. The length of the column vector b must be to n.)

数值分析（Burden）第七版的习题解答，中文繁体，找不到简体的，大家凑合看吧(Numerical Analysis (Burden) answers to the seventh edition of the exercises, Chinese Traditional, can not find the simplified)

工程数学，积分变换，南京工学院数学教研组，内容包括傅立叶技术展开与拉普拉斯变换两大部分内容。(Engineering mathematics, integral transformation, Nanjing Institute of Technology mathematics teaching and research, including Fourier and Laplace transform technique to expand two parts content.)

实现多项式样条利率期限结构参数求解，方面做国债研究人员借鉴(Polynomial spline interest rate term structure parameters for solving aspects of the bond researchers draw)

abaqus interface xfem

Lasso算法源代码,stanford开发的,绝对可靠(Glmnet for Matlab- Lasso (L1) and elastic-net regularized generalized linear models)

这是四阶的龙格库塔算法和lyapunov指数稳定性。(tihs is a runge kutta method )