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说明：  an investigation on use of chaotic sequence in DS-CDMA. The DS-CDMA systems offer physical layer security without the need for a significant increase in computation or power requirements. Nowadays, DSCDMA has been used widely. These systems suffers from multiple access interference because of other users transmitting in the cell, channel inter symbol interference and additive white Gaussian noise. Codes have an effective role in DSCDMA system, so M-sequences; gold sequences have been used as spreading codes in DS-CDMA. These sequences by shift registers and periodic in nature are developed. However, these sequences are not enough and also limit the security. This paper presents an investigation on use of new type of sequences called chaotic sequences for DS-CDMA system. These sequences by chaotic maps are generated.

Implimentation of DCT based image compression

several method for Intelligent data analysis

说明：  计算任何数的所有本原根，并统计本原根的个数(Any calculation of the number of all primitive roots, and statistics the number of primitive roots)

This File a matlab code about network

全局优化问题 MATLAB 用遗传算法计算 y(t)=4*x1(t)^2-2.1*x1(t)^4+1/3*x1(t)^6+x1(t)*x2(t)-4*x2(t)^2+4*x2(t)^4 的全局最优值 (Global Optimization MATLAB Calculate y(t)=4*x1(t)^2-2.1*x1(t)^4+1/3*x1(t)^6+x1(t)*x2(t)-4*x2(t)^2+4*x2(t)^4 Global optimum value by Genetic Algorithms )

运用ga_pso算法对svm参数优化运用ga_pso算法对svm参数优化运用ga_pso算法对svm参数优化(Use ga_pso parameter optimization algorithm svm svm use ga_pso algorithm parameter optimization using ga_pso parameter optimization algorithm svm)

凸包绘制源程序Matlab的实现,凸包Matlab绘制(Convex hull draw Matlab source implementations)

地震数据处理软件包，包括f-x预测滤波等，非常实用，搞地震方面的可以参考 (Seismic data processing software, very useful, engaging earthquakes can refer to )

自适应预测，神经网络预测，可以实现非线性预测，MATLAB环境实现。(Adaptive predictive)