time_delay

余弦波是渐变的，当ωt+φ的取值变化量很小时，Y的变化量也是很微小的。余弦波的这一特性保证了嵌入水印后相邻字符灰度值差别不大，人眼无法识别，从而保证了水印的不可见性和图像质量。(Cosine wave is gradual, and when ωt+ φ values variation is very small, Y amount of change is very small. Cosine waves This feature ensures that watermarked gray value of adjacent character is not very different, the human eye does not recognize, thus ensuring the invisibility of watermark and image quality.)

一种改进的Toeplitz算法，具有更好的稳定性，更高的分辨力(A kind of improved Toeplitz algorithm, it has better stability, higher resolution )

本人收集的关于多径衰落、瑞利，RICE信道、QPSK等仿真程序，经过本人测试，全部可用，并附上测试结果及仿真图.(I collected on the multipath fading, Rayleigh, RICE channel, QPSK simulation program, etc., after I test, all available, along with test results and simulation of Fig.)

流形学习，局部线性嵌入式算法(LLE)，一种智能的算法去推测捕捉高维空间中所包含的低维特征。与适合于局部维数约减的聚类算法不同，LLE算法在单一的低维的全域坐标系统中表征采样空间，然而它并没有优化最小局域。通过对线性重构的局域对称的研究应用，LLE能够描述非线性流形的全局结构，例如那些人脸的数据集或者文本文档集(Manifold learning, embedded local linear algorithm (LLE), an intelligent algorithm to predict capture high-dimensional space contained in the low-dimensional features. And for local dimensionality reduction of the different clustering algorithms, LLE algorithm in a single low-dimensional characterization of the global coordinate system, the sampling space, but it does not optimize the local minimum. Reconstructed by the local symmetry of the linear study of the application, LLE can describe the global structure of nonlinear manifolds, such as those who face data sets or text document collection)

traveling problem salesman

二维FDTD仿真高斯脉冲在平面内的传播，并且设定了ABC边界条件，可以自动生成关于Ez，Hx和Hy的.avi文件，播放脉冲动态传输。(Dimensional FDTD simulation Gaussian pulse propagation in a plane, and set the ABC boundary conditions, can automatically generate .avi files on Ez, Hx and Hy, and play dynamic pulse transmission.)

int compare(const char* a, const char* b, int size) { for (int i = 0 i < size i ++) { if (a[i] != b[i]) { return i } } return -1 } (int compare(const char* a, const char* b, int size) { for (int i = 0 i < size i++) { if (a[i] != b[i]) { return i } } return-1 } )

基于matlab编写的小程序，可以实现观察信号的泄漏现象，亲自验证好使。(Based on matlab prepared applet, you can achieve the observed signal leakage phenomenon, personally verify so.)

有限元Matlab程序，同时提供书籍的pdf文件，供同时学习使用(This book was written to be a undergraduate and introductory graduate level textbook, depending on whether the more advanced topics appearing in the end of each chapter are covered.)

一个智能天线处理程序源码，能有效提高算法性能，很实用。(A smart antenna processing source code, can effectively improve the algorithm performance, very practical.)