step response

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)

用于矩阵的一种cholesky分解方法，第一次上传请多关照(cholesky method for matrix decomposition)

matlab的smote算法，可以用于分类时样本数据不平衡的问题(matlab smote algorithm, can be used to sample data classification problem of unbalanced)

计算天体力学中常用的HANSEN函数,对偏心率小于0.1时适用(This code for hansen function )

说明：  经典圆柱绕流算例，基于palabos开源软件，计算结果非常好(cylinder flow with palabos)

稀疏矩阵的DIA/ELLPACK/COO/CSR/HYB表示形式，以及各表示形式下的稀疏矩阵乘法（稀疏大矩阵*矢量）的CUDA实现。对于矩阵中每一行稀疏元素个数较统一的情况，ELLPACK表示最佳，其次是HYB（ELL+COO）。 CUDA™ 是一种由NVIDIA推出的通用并行计算架构，该架构使GPU能够解决复杂的计算问题。 它包含了CUDA指令集架构（ISA）以及GPU内部的并行计算引擎。 开发人员现在可以使用C语言来为CUDA™ 架构编写程序(Sparse matrix DIA/ELLPACK/COO/CSR/HYB representation, as well as the representation of the sparse matrix multiplication (large sparse matrix* vector)' s CUDA implementation. For each row of the sparse matrix representing the number of elements the case of unification, ELLPACK that the best, followed by HYB (ELL+COO). NVIDIA CUDA ™ is introduced by a general purpose parallel computing architecture that makes the GPU to solve complex computational problems. It contains the CUDA Instruction Set Architecture (ISA) and the GPU parallel computing engine. Developers can now use the C language to write programs for the CUDA ™ architecture)

EFIE-电场积分方程的详细推倒过程，对于初步学习电磁场的人很有用。(Electric field integral equation EFIE-down process in detail, the electromagnetic field for the preliminary study were very useful.)

系统辨识与自适应Matlab仿真程序 庞中华，崔红 编著(Matlab CODE)

说明：  埃特金不等距插值，有例子，检验过，很顺利(Aitken non-equidistant interpolation, there are examples of tests, it is smooth)

利用龙格库塔法（等步长，变步长）计算椭圆方程，双曲线方程，抛物线方程等。对各类微分方程进行数值计算。(The use of Runge-Kutta method (such as step, variable step size) calculated elliptic equations, hyperbolic equations, such as parabolic equation. Various types of differential equations for numerical calculation.)