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传感器信息获取，利用E4a为编程平台，通过对ESP8266与传感器的连接，完成数据获取(Sensor information acquisition)

电力系统潮流计算体现在数学就上是多元非线性方程组的求解问题，求解的方法有很多种。牛顿—拉夫逊法是数学上解非线性方程式的有效方法，收敛性好、迭代次数少。将牛顿—拉夫逊法用于潮流计算是以导纳矩阵为基础的，由于利用了导纳矩阵的对称性、稀疏性及节点编号顺序优化等技巧，使牛顿—拉夫逊法解题规模和计算速度进一步提高，此算法至今仍是潮流计算中广泛采用的优秀算法。(Power flow calculation in power system is a problem of solving multivariate non-linear equations in mathematics. There are many methods to solve it. Newton-Raphson method is an effective method for solving nonlinear equations in mathematics. It has good convergence and fewer iterations. The application of Newton-Raphson method to power flow calculation is based on admittance matrix. Because of the use of symmetry, sparsity and optimization of node number sequence of admittance matrix, the scale and speed of Newton-Raphson method are further improved. So far, this algorithm is still an excellent one widely used in power flow calculation.)

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)

用于将txt格式数据，转换为.dat格式的数据，便于CASS处理。(Txt format for the data is converted to. Dat format, easy CASS processing.)

各种新型的PID算法原理介绍及其应用，包括数字PID算法及其改进，自适应PID控制算法，模糊PID控制算法等(New forms of PID algorithm, this paper describes its application, including digital PID algorithm and its improvement, adaptive PID control algorithm, fuzzy PID control algorithm, etc.)

JAVA战车游戏源码，包括完整的Src和资源文件，书籍编译生成的jad文件，拷贝到Java手机上或在Java模拟机中可看到运行效果。这个游戏是仿写泡泡堂战车的。

说明：  emv writer x1 ultimate

Feature Matching－关于图像特征点配准方面的一篇好的外文文章-Feature Matching-on image feature point registration area of a good foreign-language article

说明：  实现在链家网相关信息的爬虫，python代码实现(Implementation of crawler Python code in chainhome)

说明：  单相光伏并网发电系统电压前馈控制和有源频率偏移（AFD）孤岛检测法的simulink仿真模型AFD孤岛检测方法采用S函数给出(Simulink simulation model of voltage feedforward control and active frequency offset (AFD) islanding detection for single-phase photovoltaic grid connected power generation system)