PloySpline

说明：  matlab程序，有约束最优化问题直接法--复合形法(matlab program, constrained optimization problems are the direct method- the complex method)

基于K均值的PSO聚类算法,matlab小波分析程序，小波包分析提取振动信号中的特征频率。( K-means clustering algorithm based on the PSO, matlab wavelet analysis program, Wavelet packet analysis to extract vibration signal characteristic frequency.)

C++ SGP4 Satellite Library

说明：  利用二阶循环统计量去除同频带干扰的影响，同时，当信号为相干信号时，也可以去相关，得到较好的结果，(Using second-order cyclic statistics to remove the influence of interference in the same frequency band)

数值分析方法库 本书编写了300多个实用而有效的数值算法C语言程序。其内容包括：线性方程组的求解，逆矩阵和行列式计算，多项式和有理函数的内插与外推，函数的积分和估值，特殊函数的数值计算，随机数的产生，非线性方程求解等(Numerical analysis method to prepare a library book more than 300 practical and efficient numerical algorithm C language program. Its contents include: linear equations, calculation of inverse matrix and determinant, polynomial and rational function interpolation and extrapolation, function points and the valuation of special functions numerical calculation, random number generation, non- Solving linear equations, etc.)

UMAT for Abaqus,程序由Fortran语言写成，用于计算一般弹塑性材料的应力应变关系。(UMAT for Abaqus, written in Fortran language, is used to calculate the stress strain relationship of general elastoplastic materials.)

非线性振动.pdf 刘延柱编写 恢复力与位移不成正比或阻尼力不与速度一次方成正比的系统的振动。尽管线性振动理论早已相当完善,在工程上也已取得广泛和卓有成效的应用，但在实际问题中，总有一些用线性理论无法解释的现象。一般说，线性模型只适用于小运动范围，起出这一范围，按线性问题处理就不仅在量上会引起较大误差，而且有时还会出现质上的差异，这就促使人们研究非线性振动。(Nonlinear Vibration. Compilation of PDF Liu Yanzhu)

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.)

一种借助lowtran7计算大气透过率和目标辐射的软件平台ART2100(A program that used for calculate air transferrate and object randience based on lowtran7)

利用matlab实现的部分CFD功能的代码，很有参考价值(Matlab to achieve part of the CFD function of the code, a very valuable reference)