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基于小波分析和主成分分析的人脸识别研究随着社会的发展，社会各个方面对快速有效的身份验证的要求日益迫切。由 于生物特征是人的内在属性，具有很强的自身稳定性和个体差异性，因此是身份 验证的理想依据。其中利用人脸特征又是最自然直接的手段，相比其他生物特征， 它具有直接、友好、方便的特点，易于为用户接受。从而，人脸识别吸引了越来 越多来自计算机视觉和信号处理等领域的关注，成为模式识别、图像处理等学科 的研究热点。(Based on wavelet analysis and principal component analysis of the Face Recognition With the social development of all aspects of society in his capacity as quickly and efficiently verify the requirements of increasingly urgent. Biological characteristics as a result of the inherent human attribute, has a strong individual differences in their stability and, therefore, is an ideal basis for authentication. The use of facial features which is the most natural means of direct, compared with other biological characteristics, it has a direct, friendly, convenient and easy for users to accept. Thus, face recognition has attracted more and more from the computer vision and signal processing and other areas of concern, as a pattern recognition, image processing, such as the research subjects.)

此函数可以实现MATLAB，智能天线方向图函数程序的画法并且可以通过改变参数得到不同的方向图(Smart antenna pattern function MATLAB program)

说明：  基于DCT的数字水印技术论文，及相关的源代码(ji yu DCTde shuzi shuiyin jishu ,ji xiangguan wendang )

The Principles of Software QRS Detection

摘要:为提高密码的抗攻击性,利用超混沌系统随机性好!可确定再生,且密钥空间较大的特性,提出了一种基于四维连续超混沌系统和扩展映射的实时视频流加密算法"(Abstract: In order to improve the password anti-aggressive use of system randomness hyperchaos good! Regeneration can be identified, and key characteristics of the larger space, a row based on four-dimensional hyperchaotic system and expansion of mapping real-time video stream encryption algorithm )

说明：  矢量栅格转化程序，可以对拓扑文件进行转化生成相应的矢量文件(Raster vector conversion process)

对于高频输出的陀螺数据进行分割处理并合并,实现陀螺漂移零偏计算(For high-frequency output of the gyro data processing is divided and combined to achieve the gyro bias drift calculation)

用matlab自带的聚类函数进行聚类，输入为特征矩阵，输出的是聚类图(Clustering clustering comes with matlab function, input feature matrix, the output is dendrogram)

给出了三相交流调压电路在Matlab/simulink下的仿真程序，对毕业设计有帮助。(Three-phase AC voltage regulation circuit is given in the Matlab/simulink simulation under the program, help for graduation.)

Mann-Kendall Tau-b非线性函数，用于时间序列分析中计算平均变化趋势。(The Mann-Kendall Tau-b non-parametric function computes a coefficient representing strength and direction of a trend for equally spaced data. While you do not need the Statistics Toolbox to compute Taub, you do need it to test for significance. This function will compute Tau-b (now tau-a as well), significance (and the various supporting statistics), and also a non-parametric slope method: Sens Method. )