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小波包分解（wavelet packet decomposition）也可称为小波包（wavelet packet）或子带树（subband tree）及最佳子带树结构（optimal subband tree structuring）。其概念是用分析树来表示小波包，即利用多次叠代的小波转换分析输入讯号的细节部分。本案例主要用于小波包分解计算及绘图(The wavelet packet decomposition can also be called the wavelet packet or the subband tree and the best subband tree structure. The concept is to use the analysis tree to represent the wavelet packet, that is, to analyze the details of the input signal by the multiple iterative wavelet transform. This case is mainly used in the calculation and drawing of wavelet packet decomposition)

全屏幕模拟时钟的C源程序- The entire screen simulates the clock the C source program

说明：  Description Michael喜欢滑雪百这并不奇怪， 因为滑雪的确很刺激。可是为了获得速度，滑的区域必须向下倾斜，而且当你滑到坡底，你不得不再次走上坡或者等待升降机来载你。Michael想知道载一个区域中最长底滑坡。区域由一个二维数组给出。数组的每个数字代表点的高度。elements in that rectangle. In this problem the sub-rectangle with the largest sum is referred to as the maximal sub-rectangle. ()

说明：  员工信息管理系统 sql数据库 已有源文件和数据库 可直接使用(The SQL database of employee information management system can be directly used by existing source files and databases)

使用遗传算法对pid参数优化 遗传算法简称GA（genetic algorithms），它是模拟自然界遗传机制和生物进化论的一种并行随机搜索最优化方法。它将“优胜劣汰，适者生存”的生物进化理论引入优化参数形成的编码串联群体中，按所选择的适配值函数并通过遗传中的复制、交叉及变异对个体进行筛选，使适配值高的个体被保留下来，组成新的群体，周而复始，群体中个体适应度不断提高，直到满足某一条件。 。(Using genetic algorithm to optimize PID parameters)

可以跟踪ECSHOP商城订单状态，实时提醒。(It can track the order status of ECSHOP mall and remind it in real time.)

说明：  C source code of drone software to enable easy calculation of formulaye integrals.

说明：  LLC仿真 matlab2017b版本才能打开(LLC simulation Matlab2017b version can be opened)

实现多分辨率奇异值分解程序,可用于故障诊断、消除噪声等(multi resolvetion svd decompotion)

轨道交通列车速度曲线仿真例程，要改变仿真曲线直接修改初始化参数即可(Rail traffic speed curve simulation routines, to change the simulation curve, directly modify the initialization parameters)