DTMF

中心化后的傅里叶谱，傅里叶频谱和平均值,计算图像的平均值(Fourier spectrum and average value)

对电路板的图像进行分割，可以提取电路板中的目标物，以对电路板进行检测。文章使用K均值聚类算法完成对电路板图像的分割，针对传统的K均值聚类算法的不足，提出了使用直方图波形的有效波峰个数来确定K值的大小，并通过使用一种比传统的绝对误差的表示更简洁的表达式，达到了快速分割的目的。对一些电路板图像分割的实验结果表明，文章的方法能够根据目标物的数目有效的确定K值的大小，且比传统的K均值算法减少了运算量及计算时间。 (On the circuit board image segmentation, to extract the target board to the circuit board for testing. Article using the K means clustering algorithm to complete the circuit board image segmentation, the traditional K-means clustering algorithm, the paper proposes the effective use of histogram peak wave number of K values to determine the size, and by using a ratio of absolute error of the traditional expression that is more concise, to the fast segmentation. For some circuit board image segmentation results show that the method can be according to the article the number of valid target value to determine the size K, and K-means algorithm than the traditional reduced computation and computing time.)

CCNA Exploration 4.0.5.0 Routing Protocols and Concepts Instructor Packet Tracer Lab Manual (answers)

自己照书编写的基于量子遗传算法的寻优程序，赚取积分啦(According to the book written themselves based on quantum genetic algorithm optimization program, earn points friends)

按照文献《complex networks》中192-193页方法生成的scale free network，有详细注释。此方法有助于理解scale free network的生成原理，并画出了P（k）图，可以自己验证r值是否正确。(According to literature " complex networks" in the 192-193 page method to generate the scale free network, with detailed notes. This approach helps to understand the generation of scale free network theory, and plotted the P (k) diagram, you can verify their r value is correct.)

编写程序将含有20个数据的数组M分成两个数组：正数组P和负数组N，并分别统计两个数组的个数，显示在屏幕上。(Write a program containing the data array 20 is divided into two arrays M: positive and negative groups Array P N, and the number of two arrays statistics were displayed on the screen.)

齿轮传动非线性分析，对扭转振动方程组进行求解，可得到齿轮扭转角随时间变化相关参数(Gear nonlinear analysis of torsional vibration equations are solved to obtain the twist angle of the gear change parameters over time)

基于非线性理论控制的一级倒立摆，在实物上运行可行(Based on nonlinear theory of an inverted pendulum control, running in the physical feasibility)

matlab code for TEEN routing protocol for WSN

说明：  基于人眼视觉模型的双正交小波变换算法，通过实验验证,该算法在对嵌入水印后的图像进行有损压缩、剪切、污染、添加各种噪声等处理后,提取出的水印仍表现出了较好的鲁棒性。(Human visual model based on biorthogonal wavelet transform algorithm, experiments show that the algorithm of the watermarked image lossy compression, shear, pollution, after adding all kinds of noise, the performance of the extracted watermark is still a good robustness.)