策略模式-商场管理软件06反射

mapsforge的地图数据，可以查看高程详情与等高线(Map data for mapsforge allows you to view elevation details and contours)

A 3-node example for ad-hoc simulation with DSDV-A 3-node example for ad-hoc simulation with DSDV

Write Fruid in DOS system

this is simple pid controller code

环天线、单极子天线、口径天线、圆环阵列天线、喇叭天线的远场方向图绘制(Far-field pattern drawing of ring antenna, monopole antenna, aperture antenna, ring array antenna and horn antenna)

说明：  二叉树遍历图形化界面展示，课程设计。能够实现前序、中序、后序遍历。并实现良好的图形化界面及单步演示功能。(Binary tree traversal graphical interface display, course design. It can traverse pre-order, middle-order and post-order. And realize a good graphical interface and single-step presentation function.)

说明：  用希尔伯特提取心音包络，最后还可以计算心率，十分方便(Extracting heart sound envelope with Hilbert)

说明：  对语音信号进行时频分析，分别采用短时傅里叶变换、gabor变换、Wigner-Ville分布、小波变换进行时频分析 内含matlab时频分析工具包(Time-frequency analysis of speech signal is carried out by using short-time Fourier transform, Gabor transform, Wigner Ville distribution and wavelet transform Matlab time-frequency analysis kit is included)

关于编译原理的学习内容， 《编译原理（第3版）》-build on the principle of learning content, "Compiler Principle (3rd edition)"

字符串的强悍操作，值得学习-string of tough operation, it is worth learning