Matrix

可以求解雷洛方程的膜厚和载荷方程，读者可以稍微修改相关参数就可以应用到自己的公式和相关数学模型中(Reynolds model to develop the film-thickness and hydrodynamic load. )

用c++实现m次多项式的曲线拟合，改程序简单易懂，可读性强(it s easy)

fortran程序，计算应力强度因子和特征值和特征向量，研究多种材料接触(fortran program)

计算bessel函数的值。在调压室的结构应力计算时可用到。(Calculate bessel function value. Stress in the surge tank can be calculated to.)

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)

采用时域数值仿真算法较为精确的仿真铣削加工过程动态力(By using numerical simulation algorithm is more accurate simulation of milling process dynamic force)

二维情况的chan定位算法，1994年原版论文代码实现，可以支持远近和linear nonlinear四种模式(2 dimension chan algorithm, TDOA localization. Including near, far field and linear nonlinear sensor array)

Runge－Kutta45算法与Runge-Kutta54算法的matlab实现 数值分析课程代码(Runge-Kutta 45 algorithm and Runge-Kutta 54 algorithm matlab implementation Numerical Analysis Course Code)

给出变量的上下边界、初值和代价函数，能够搜索代价函数最小值时的变量取值。属于带约束的优化算法，可以用来求算非线性方程组。(STRSCNE is a Matlab code for constrained nonlinear systems of equations F(x)=0 l<=x<=u where F: R^n--> R^n, l and u are vectors of dimension n. Non-existent lower and upper bounds, i.e. entries of l and u equal to minus o plus infinity, are allowed. The algorithm is a globally convergent procedure that combines Newton method and an elliptical trust-region approach. The elliptical trust-region is defined employing a scaling diagonal matrix D and the trust-region subproblem is approximately solved by the dogleg method. Only strictly feasible iterates are generated. Various input/output options are provided, and we refer to the code itself for further documentation. )

比较JPLDE405的切比雪夫系数导出的位置与低精度月球坐标分析。(Comparative Analysis of JPL DE405 cut Chebyshev coefficients derived position with low accuracy lunar coordinates.)