ThirdSoftVectorRegression

说明：  增加、删除用户信息，修改密码等，大学生本科毕业材料(Add, delete user information, modify password, undergraduate graduation materials)

恐吓类小游戏,很适合喜欢搞恶作剧的朋友们.-category intimidation game is well-suited to the likes mischievous friends.

针对基于双曲线定位的DV-Hop算法中误差项的异方差性引起的定位误差大的问题，提出了一种基于加权双曲线定位的DV-Hop改进算法。算法分析了基于双曲线定位的DV-Hop算法模型中误差项的异方差性，用加权最小二乘法对异方差性进行纠正，对加权最小二乘法中的权值矩阵进行了推导并得到与跳数相关的最佳权值矩阵，使得误差项满足同方差性，所得估计值更加接近最佳线性无偏估计。仿真实验结果表明，所提算法在节点定位精度上较现有的基于双曲线定位的DV-Hop算法都有一定提高。(Aiming at the problem that the heteroscedasticity of observation errors leads to low locating accuracy in DV-Hop algorithm based on hyperbolic positioning, this paper proposes an improved DV-Hop algorithm which based on weighted hyperbolic positioning. The algorithm analysis the heteroscedasticity of the error term in the model and takes advantage of weighted least square method which corrects heteroscedasticity straightforwardly. Then, the weight matrix related to least hops between nodes is deduced, the estimators thus obtained are more close to the best linear unbiased estimator. The simulation results show that the location performance of the improved algorithm is better than that of the exsiting DV-Hop algorithm which based on hyperbolic positioning.)

说明：  姜弘道编写的弹性力学问题的边界元程序，用matlab运行。(The boundary element program of elastic mechanics compiled by Jiang Hongdao is run by MATLAB.)

jtopo拓扑图的实现,使用JTOPO开源，创建JTOPO应用(JTOPO MASTER,use jtopo source,create my usecase)

reddy snr estimator. run the interleaver file first than run the estimator file and get the results.

E+H质量流量计中文使用操作指南，科氏力质量流量测量系统，用于压缩天然气(CNG）加料(E+H CNGmass Operating instructions ,Coriolis Mas Folw Measuring System For Fueling with Compressed Natral Gas(CNG))

说明：  该源码可以同时实现智能小车循迹的功能和避障的功能(The source code can realize the function of intelligent car tracking and obstacle avoidance at the same time)

说明：  用python编的爬虫小程序，希望大家喜欢，谢谢大家！(python internet reptile book)

从键盘接收字符串，并统计其中各种字符出现频率！(calculate the frequency of every sinal get from the keyboard!)