huffman

em算法计算混合高斯模型的参数估计，极大似然，EM算法用于K均值问题的参数估计。MATLAB实现有代码(em algorithm Gaussian mixture model parameter estimation, maximum likelihood parameter estimation for K-means problem EM algorithm. MATLAB implementation code)

用MATLAB实现快速傅里叶变换。方程有需要的话，可以自己设定(Using MATLAB to achieve fast Fourier transform. Equation there is a need, they can set their own)

Generate PWLF file from Matlab for Cadence spectre simulation

As we know, the energy needed for sensors should be electrical. So the rst step before start to work is to convert environmental energy to electrical one. Inside the node there are dierent components for sensing the area, collecting data and processing the data. So the main dierent part of this kind of nodes, in compare of WSN nodes, is the power part. Once the stored energy reach to a certain amount, the power supply for micro controller and transceiver will start to work. They will continue to work until they have energy, as soon as the energy nish, they stops and energy storage device start to work to save energy again. The other fact should be consider about EH-WSN node is that the available energy can change in dierent nodes. So every node has its own harvesting rate.

求解电力网络机电暂态DAE方程，得到系统随时间变化的状态量轨迹(solve the mechanical/electrical transient DAE function of power system, in order to get the trace of the state parameter when time varies)

说明：  利用matlab对图像进行栅格提取，高频增强，中值过滤，线性过滤，自适应过滤等的程序代码(The image grid using matlab code extracted)

matlab code for solve equation

matlab program to practice

说明：  自组织特征映射的一种基本算法，供初学者使用(Self-organizing maps as a basic algorithm for beginners)

It shows what a jpeg compression is all about. the function implements the DCT transform, using a matrix operator. note that matlab has a function for the DCT and iDCT transforms that might be more efficient. (It shows what a jpeg compression is all abou t. the function implements the DCT transform. using a matrix operator. note that Matlab has a f unction for the DCT and iDCT transforms that mig ht be more efficient.)