changguichaoliu

寻找测试样本的最近邻，可以有效的用于用于模式识别，信号处理(This is a small but efficient tool to perform K-nearest neighbor search, which has wide Science and Engineering applications, such as pattern recognition, data mining and signal processing. The code was initially implemented through vectorization. After discussions with John D Errico, I realized that my algorithm will suffer numerical accurancy problem for data with large values. Then, after trying several approaches, I found simple loops with JIT acceleration is the most efficient solution. Now, the performance of the code is comparable with kd-tree even the latter is coded in a mex file. The code is very simple, hence is also suitable for beginner to learn knn search.)

大地坐标的纬度和经度，许多大地坐标的纬度和经度的批处理非常方便。(Geodetic coordinates to latitude and longitude, very convenient to many geodetic coordinates to latitude and longitude of batch.)

这是MATLAB 和 LABVIEW 混合编程方面的书籍 介绍了 MATLAB 脱离 MATLAB 环境运行。(this is a good code for that matlab to dll. welcome to download )

说明：  该程序是盲源分离算法中时域—频域分离算法，该算法应用范围广泛。(The procedure is blind source separation algorithm in time domain- the frequency domain separation algorithm, which a wide range of applications.)

rgb channel sepration...

内容：运用PM算法识别空间目标。程序中附有注释，可改变方向角，运算速度比music算法快，本人毕设程序，绝对可用。(Content: The use of PM space target recognition algorithm. Annotated program, you can change the direction of the angle calculation algorithm is faster than the music, I set up the program, absolutely free.)

使用trim分析动态系统的平衡点， matlab(Trim analysis of dynamic systems using the equilibrium point)

seismic response analysis of MDOF structures using wilson-theta method

A set of matlab functions to read, write and deal with .spc spectra and spectral descriptions

A motion picture presents a continues phenomena as a sequence of frames. We perceive continuity by "filling in the gaps" and "smoothing out " the missing information. While faster motion requires more frames during a given time period, there is a point where more frames per second yield no further improvement. The "sampling speed" must be fast enough to allow "appropriate averaging of dead times between frames", but need not accommodate motion too fast to be seen by a human. The above description is somewhat analogous to sampling of audio signals. The sampling rate depends on how fast the signals vary (the highest frequency we hear). Nyquist showed that sampling frequency exceeding twice the audio bandwidth is sufficient to include all the signal information, preserving the finest details up to half the sampling rate