DBN

说明：  OFDM的MATLAB系统仿真，使用QPSK调制、梳状导频LS信道估计，并且还进行了LS和MMSE信道估计方法的性能比较(MATLAB simulation of the OFDM system, QPSK modulation, combed pilot LS channel estimation, and performance comparison of LS and MMSE channel estimation )

matlab基于Relief算法的特征权重选择，有效地选择出了权重数据(Based on the feature weight selection of Relief algorithm, the weighting data are effectively selected)

说明：  地理信息系统原理，是一本电子书教材，希望对大家有用(The principle of geographic information system is an e-book teaching material, I hope it is useful to everyone)

北大ACM暑期培训讲义，主讲人为北京大学历届World Final选手，具有一定的参考价值。(ACM Peking University summer training handouts, presenter of Peking University successive World Final players, has a certain reference value.)

hen hao de ,qing da jia shiyong

ms dos 源码 难得的好东西 就怕你不会用-ms dos rare source of good things you do not fear

很多编程爱好者都编写过俄罗斯方块的游戏程序。很久以前，我用Tc2.0也做过一个；最近有好些朋友看见我以前的俄罗斯方块的程序后， 问我是怎么做的。我一直想把这个程序的整个过程写一份详细的东西，与各位编程爱好者分享，一直没空。正好现在放假了，而且离回家还有几天。于是我就把这个程序重新写了一遍，-Many programming enthusiasts have been prepared Tetris game procedures. A long time ago, I also made a Tc2.0 recently have some friends to see my previous procedure for the Russian box, the question is how I do. I have always wanted this process to write the whole process a detailed things to share with you programming enthusiasts, has been busy. Is now a holiday, and a few days away from home. So I put this process to re-write again,

频谱分析Spectrogram支持wave-Spectrogram

本程序采用牛顿拉夫逊进行电力网络的潮流分布计算，是电力系统教学的工具之一。-This procedure using the Newton Raphson power networks, the trend of distributed computing, power systems are one of the tools of teaching.

说明：  群体智能算法”Matlab工具箱3.0 集成了八种种群体智能算法：'PPNGA','SFLA','MSFLA','AF-SFLA','PSO','ABC','DEr1','DEb2' % 2、适应度函数开放了一个参数Parmaters，接收本文件Options.Parmaters传递的参数，实例参见m文件F3_Rastrigin.m % 3、本程序设置了三个终止条件，终止条件3是必需的；终止条件1,2是可选的，不需要时隐去代码即可 % 4、在优化参数设置中，小种群设置与大种群设置各有优势，实际工程问题不一定哪一种设置更好，要根据实验结果来确定 % 5、在算法参数设置中，缺省设置一般不需要改动，除非在原理上对改动所引起的结果变动有着更深入的理解(Swarm intelligence algorithm" Matlab toolbox 3)