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Calculates the magnitude of a Cartesian vector R, Find the magnetic field intensity at any observation point and Plot the magnetic field intensity along the z-axis

蚁群算法是一种模仿蚁群行为的仿生优化算法，其实现机理包括两个基本阶段：适应阶段和协作阶段。在适应阶段，各可行解根据积累的信息不断调整自身结构，路径上经过的蚂蚁越多，信息量越大，则该路径越容易被选择：时间越长，信息量越小。在协作阶段，各可行解之间通过信息交流，以期望产生性能更好的解。(Ant colony algorithm is a mimic ant colony behavior of bionic optimization algorithm, its implementation mechanism includes two basic stages: adaptation and collaboration. In adaptive phase, the feasible solution according to the accumulated information constantly adjust their structure, path through the more the ants, the greater the amount of information, it is the easier path is chosen: the longer the time, the smaller the amount of information. The collaboration stage, through the exchange of information between the feasible solution, expecting to generate better solutions.)

matlab实现4阶龙格库塔的一个示例，分为三个子函数来调用(Matlab 4 order LongGe coulthard s a sample)

GM板有限元matlab程序 FGM板有限元matlab程序(应力矩阵)(failed to translate)

matlab练习题,战胜matlab必做的50题，教你如何轻松的掌握matlab(matlab exercise)

matlab simulation cdma correcte

说明：  第17章： 数据统计和分析 MultiLineReg 用线性回归法估计一个因变量与多个自变量之间的线性关系 PolyReg 用多项式回归法估计一个因变量与一个自变量之间的多项式关系 CompPoly2Reg 用二次完全式回归法估计一个因变量与两个自变量之间的关系 CollectAnaly 用最短距离算法的系统聚类对样本进行聚类 DistgshAnalysis 用Fisher两类判别法对样本进行分类 MainAnalysis 对样本进行主成分分析 (data)

说明：  用Matlab实现阴历和阳历相互转换，里面有注释可供参考(Using Matlab to achieve conversion between the lunar and solar calendar, which has notes for reference)

THIS IS ANOTHER COMPLETE REFRENCE BOOK

chirp信号的短时傅里叶变换源代码，雷达、信号处理等领域，可实现对chirp信号的短时傅里叶变换(short-time Fourier transform source code field chirp signals, radar, signal processing can be realized on short-time Fourier transform chirp signal)