stance_dff

齿轮传动参数测定和公法线公差计算，变位直齿圆柱齿轮参数测定(Determination and the normal line of the gear transmission parameter tolerances calculation)

共轭梯度法（Conjugate Gradient）是介于最速下降法与牛顿法之间的一个方法，它仅需利用一阶导数信息，但克服了最速下降法收敛慢的缺点，又避免了牛顿法需要存储和计算Hesse矩阵并求逆的缺点，共轭梯度法不仅是解决大型线性方程组最有用的方法之一，也是解大型非线性最优化最有效的算法之一。 在各种优化算法中，共轭梯度法是非常重要的一种。其优点是所需存储量小，具有步收敛性，稳定性高，而且不需要任何外来参数。(Conjugate gradient method (Conjugate Gradient) is between the steepest descent method between the method and Newton' s method, it takes only a first derivative information, but to overcome the steepest descent method convergence slow shortcomings, but also to avoid the Newton method needs to be stored Hesse and disadvantages of computing inverse matrix and the conjugate gradient method is not only one of the most useful methods to solve large linear equations, solution of large-scale nonlinear optimization is one of the most effective algorithm. In various optimization algorithm, conjugate gradient method is a very important one. The advantage is that a small amount of memory required, with step convergence, high stability, and does not require any external parameters.)

蒙特卡洛资料，对于编写概率计算问题有较多的帮助，希望能帮到需要的人。(Monte Carlo)

一种数值分析常用的欧拉算法,用matlab实现的(Numerical Analysis of a commonly used Euler algorithm, achieved using matlab)

说明：  一个虎门大桥涡街的udf和fluent仿真教程，适合初学者(A fluent udf example)

模型大小延伸程序；及实现快速傅里叶变换的小程序。该两程序通俗易懂，适合初学者(Model extension、 FFT)

说明：  二级转运站选址数学规划模型求解的lingo 程序(Lingo Program for Solving Mathematical Programming Model of Secondary Transfer Station Location)

针对于对一般矩阵的求逆，或对复杂系统的求逆(Aimed at the general matrix inverse or inverse complex systems)

用以计算nscat地球物理模型函数的程序！(This is a program for calculating the nscat geophysical model.)

高斯拟合程序，采用高斯函数拟合数据，获得拟合高斯函数的平均值和方差。(Gaussian fitting procedure, using Gaussian function fitting the data, fitting Gaussian function to obtain the mean and variance.)