short_time

有12个外表一模一样的小球，其中有一个的质量和其他11个球不一样（11个球的质量完全相同） 而且该球不知道是轻点还是重点。现在给你一个天平（无砝码），只有3次测量机会，请你找出该球。(12 looks exactly the same ball, which has a quality and not the same as the other 11 balls (11 balls in the quality of the identical) and that the ball does not know the point or focus light. Now to give you a balance (no weight), only 3 measurements chance, you find the ball.)

海伦方法分析偶极子天线的频率阻抗特性-电阻随频率的变化，电抗随频率的变化(Helen analyze the frequency dipole antenna impedance- resistance changes with frequency, the change of reactance with frequency)

自己编写的程序，在光谱数据处理上可以实现截回波以及傅里叶变换功能(I have written procedures, the spectral data processing can be achieved as well as truncated Fourier transform function echo)

CDMA Simulation Using MATLAB This program models a simple implementation of CDMA technology. It considers multiple bit data streams sent by any number of senders across a common channel. Each sender uses a unique code word, given by the Walsh set, to encode its data, send it across the channel, and then perfectly reconstruct the data at the receiver. The simulation utilizes these simplifications: 1. The individual data streams share the same bit length. 2. The code words are determined using the Walsh set to create orthogonal code words. 3. The spreading factor M of each code word is identical. 4. All users (data streams and codes) are synchronized in time. 5. Set-up and hold times of real-world systems are ignored. 6. The channel through which the data passes is ideal.

该文件中包含二次规划中涉及的matlab程序，包含拉格朗日法以及起作用集法(This file contains the quadratic programming matlab procedures involved, including the Lagrangian method and set method works)

matalab一些基本运算，对于初学者来说很有用！(matalab some of the basic operations for the newcomer useful!)

matlab下的核磁共振可视化，展示了自发弛豫过程(MRI visualization under matlab, showing the spontaneous relaxation process)

chanvese algorithm for detection of contours activs ones

在系统辨识中，应用多级最小二乘可以很好的估计出噪声系数(In system identification, the application can be multi-stage least squares estimates of the noise figure)

After we calculate the R peaks of the ecg signal, we identify different criteria : a) Heart rate. b) Regularity of the R-R peaks (Look at the R-R distances). 1. Regular (are they equidistant apart). 2. Irregular. c) Rhythm 1. Tachycardia ==> Fast. 2. Bradychardia ==> Slow. 3. Normal.