2019bandelet

ar模型进行预测，并求ar系数ar模型进行预测，并求ar系数(AR model is used to predict)

说明：  HF-LPX30系列Wi-Fi模块用户手册(HF-LPX30 WiFi Module User Manual)

通过按键在数码管进行简单的充值和消费。比如数码管的数值是100，按一个按键消费10，那么按另一个按键是充值10元，(Through the button in the digital tube for simple recharge and consumption. For example, the number of digital tube is 100, the consumption of 10 by one button is 10 yuan by another key.)

说明：  连玉君pvar模型stata程序包,可做GMM估计，格兰杰因果检验，脉冲响应函数(Lian Yujun pvar model stata package, can do GMM estimation, Granger causality test, impulse response function)

semi coductor schottky diode equation solution using matlab

说明：  非常实用的matlab地图绘制工具箱，文件夹doc里有详细中文使用说明书(userful map building tools with Chinese)

利用转换公式将真彩图像转换为灰度图像。将灰度图像的每一个像素点对应一个元素保存在一个矩阵中。然后利用帧差法进行图像差分处理，从而提取出运动目标。对差分后的图像二值化处理，用最大类间方差分割法遍历求取最优阈值。使其作为基准，区分差分图像的背景元素和目标元素。最后用matlab进行编程使目标信息高亮显示在屏幕上。(The true color image is converted to gray image by transformation formula. Each pixel of a grayscale image is stored in a matrix corresponding to one element. Then the frame difference method is applied to image difference processing to extract moving targets. After the two valued processing of the differential image, the optimal threshold is obtained by traversing the maximum variance between classes. It is used as a benchmark to distinguish the background and target elements of the differential image. Finally, Matlab is programmed to highlight the target information on the screen.)

MIDP的拼图游戏很经典，实际上是拼字母游戏-MIDP the classic pieces of the jigsaw is actually fight alphabet game

边界元程序库(Boundary element program library)

说明：  利用AUTOLISP进行CAD二次开发，里面画了盘式法兰的两个视图，适合新手(Using AUTOLISP to redevelop CAD, two views of disc flange are drawn, which is suitable for beginners.)