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FDTD Finite-Difference Time-domain in free space no ABC FDTD(t) runs FDTD for time t. FDTD implements the FDTD/staggered leapfrog scheme over time 0-max_time and space 0-max_space. This program simulates a gaussian pulse in the grid specified with max_time and max_space. The pulse is sent from the center of the problem space and disperses in both directions -Kira Heater

说明：  OFDM的仿真，这种技术wimax已经采用，未来的4G肯定也是基于这种技术。附件是源代码，仅供大家参考！ (OFDM simulation, WiMAX technology has been adopted as the future 4G is definitely based on the technology. The annex to the source code, only your reference!)

详细介绍主元分析的步骤、用matlab具体的实现方式(Details the steps of the principal component analysis using matlab specific way to achieve)

典型连续信号和离散信号的时频分析，包括：单位冲激信号、单位阶跃信号、矩形脉冲信号、正弦信号、指数序列等等(Typical continuous signal and discrete signal frequency analysis, including: unit impulse signal, the unit step signal, rectangular pulse signal, sinusoidal signal, the index sequence, etc.)

本程序是针对左端铰支，右端固支的连续梁，并且其中的集中荷载是按作用点在单元中点计算。对于初学者可以做为参考。(This program is for the left end of the hinge support right end clamped continuous beam, and the concentrated load action point unit midpoint. Can be used as a reference for beginners.)

A source code to convert cartesian coordinates to Log-Polar coordinates for an image.

raytracing program for seismic forward modeling

Tutorial One (You should run it in the Command Window)

google memcached 客户端 jar 包(google memcached client jar)

向下延拓是不稳定算法，这个程序采用迭代法向下延拓，稳定性更好，自己编写的，供大家参考(Downward continuation algorithm is unstable, this program uses an iterative method for downward continuation, better stability, I have written for your reference)