zernikemoment

三维立体图形，带网格，用三维坐标描绘曲面走向(Three-dimensional graphics)

计算自然样条曲线的MATLAB程序 输入的量X和Y分别是由节点（x_i,y_i）（i=0,1,2,...,n）的横坐标和纵坐标组成的向量。(A Matlab program for calculate natural spline)

计算齿轮齿面接触强度和齿根弯曲强度安全系数（GB）(Calculate the safety factors of gear tooth contact strength and tooth root bending strength based on GB)

MATLAB code for Kinematic simulation

it is mds demo program

说明：  离散信号Gabor展开的理论及实现颇为繁琐。其中包括离散Gabor变换的标架理论、周期序列的离散Gabor变换、非周期序列的离散Gabor变换以及各种快速算法等。此程序给出给出了一个线性调频信号的Gabor变换。(Gabor expansion of discrete signals and the realization of the theory is quite cumbersome. Including discrete Gabor transform frame theory, the periodic sequence of discrete Gabor transform, non-periodic sequence of discrete Gabor transform and a variety of fast algorithms. This procedure gives a linear FM signal is given the Gabor transform.)

Another very good book of FDTD method

this is richards equation for ground water calculation

微软的一道题目，有12个外表一模一样的小球，其中有一个的质量和其他11个球不一样（11个球的质量完全相同），而且该球不知道是轻点还是重点。现在给你一个天平（无砝码），只有3次测量机会，请你找出该球。球号从a到l(小写)(Microsoft' s one topic, there are 12 look exactly the same ball, one of which the quality and not the same as the other 11 balls (11 balls of the same quality), and that the ball does not know or focus of light spots. Now to give you a balance (no weight), only three measurements chance, would you please identify the ball. Ball number from a to l (lowercase))

基于matlab平台上实现的遗传算法交叉算子操作，实现的是对自然数编码的两点交叉。代码无错，可以直接运行。(Based on matlab platform to achieve crossover genetic algorithm operations, the realization of the two-point crossover natural number coding. Code is error-free, can be directly run.)