xinhaoyuxitong

说明：  FDTD（时域有限差分法）写的一个双脊金属加载矩形波导，的基模和第一个高阶模的色散曲线计算。(FDTD (finite difference time domain method) to write a双脊metal loaded rectangular waveguide, the fundamental mode and first higher order mode dispersion curve.)

This is another source code for speech recognition.. this is the voice active detection using energy detection

地球物理勘探中重力资料解释的主要目的是由地表观测值推断地下可能存在的密度分布。众所周知,任何一组重力数据都可能由无数个密度分布所引起。即使假设了重力异常是由具有均匀密度差的单一地质体产生的,也得不出唯一的解(Gravity geophysical exploration data interpretation main purpose is inferred from surface observations may exist underground density distribution. Is known, any set of data may be provided by gravity density caused numerous. Even assuming that the gravity anomaly is determined by having a uniform density difference arising from a single geological body, they have no unique solution)

包括蚁群优化算法，梯度优化算法两个文档。(Including ant colony optimization algorithms, gradient optimization algorithm the two documents.)

实序列FFT快速算法，用N点FFT计算2N点实序列的FFT，比直接进行2N点FFT运算减少一半运算量。(Real sequence FFT fast algorithm, using N-point FFT calculation 2N point real sequence of FFT, than the direct 2N-point FFT computation halved.)

Microwave Guide Mode Simulatot

通过奇异值分解的方法对数字图像进行压缩达到节省存储空间的目的(Compression of digital image by singular value decomposition to save storage space)

说明：  首先介绍一下早期的简单模型，即Boid（Bird-oid）模型。这个模型是为了模拟鸟群的行为而设计的，它也是粒子群优化算法的直接来源。(Because the simulation is too simple and far away from the real situation, a random variable is added to the velocity term, that is, in each iteration step, in addition to meeting the "nearest neighbor velocity matching", a random variable is added to each step of the speed, so that the whole simulation looks more realistic.)

matlab作图精典教案，适合初学者学习使用(matlab drawing classic lesson plans for beginners to learn to use)

基于matlab开发的通用有限元软件的源程序部分，最新版本(Matlab-based general-purpose finite element software development source part, the latest version)