用于OAM通信系统中对OAM波的纯度进行检测是否满足通信要求 43680542OAM_Purity

C#数字排列组合递归算法实例，可排列0——N个数字，需要组合的数字在0~5之间，也就是最大支持5位数，速度极快，可输入位数后，点击“计算”按钮体验一下。

说明：  通过较多的数据，求出路段最短路径,并进行分区，画出图(Through more data, find the shortest path of the exit section, and partition, draw a map.)

常见的三种通信协议之间的比较归类，spi,iic,等。(communication Comparison of three common communication protocols, spi,iic, etc.)

echarts 自定义图表的开发 1，C# + SQL2008 2，前端显示各种图表的报表 3，多维度数据分析(Development of echarts custom chart 1, C# + SQL2008 2, the front end displays all kinds of charts and reports 3, multidimensional data analysis)

双重差分估计 双重差分模型（difference-in-difference，DID）近年来多用于计量经济学中对于公共政策或项目实施效果 的定量评估。 通常大范围的公共政策有别于普通科研性研究，难以保证对于政策实施组和对照组在样本分配上的完全随机。非随机分配政策实施组和对照组的试验称为自然试验（naturaltrial），此类试验存在较显著的特点，即不同组间样本在政策实施前可能存在事前差异，仅通过单一前后对比或横向对比的分析方法会忽略这种差异，继而导致对政策实施效果的有偏估计。(Quantitative evaluation of policy or project implementation effect. Generally, a wide range of public policies is different from general scientific research, and it is difficult to ensure that the sample allocation for the policy implementation group and the control group is completely random. The non-randomly assigned policy implementation group and the control group are called natural trials, which have significant characteristics, i.e. there may be prior differences between the different groups of samples before the implementation of the policy, and this difference will be ignored only through a single pre-and post-comparison or horizontal comparison analysis method, which leads to the policy. Biased estimation of implementation)

本程序是最小生成树Prime算法，希望对大家有用。(Prime)

说明：  在研究如何嵌入打开office的doc和ppt等文件格式时，编制的一个demo，有参考价值(When researching how to embed and open document formats such as Doc and PPT of office, a demo is compiled, which has reference value.)

发一点图片，在开发软件中需要的-hair 1:00 pictures, in the development of software

说明：  msp430 f5529 连接lcd1602 驱动程序代码 字符 字符串(msp430 f5529 Connect LCd1602 Driver Code Character String)

说明：  相关元胞自动机代码，给元胞自动机学习者提供参考(Simulation of correlated cellular automata)