NPC_vincotech

用于电力系统潮流计算的程序，IEEE9节点算例，可以改成自己想要的节点算例(Program for power flow calculation, IEEE9 node examples, you can change the node you want examples)

matlab时间反转镜算法的程序，有兴趣的网友可以参考(Matlab time reversal mirror algorithm program, interested users can refer to)

这是一个118节点的IEEE-118标准测试系统后感数据代码(This is a 118-node IEEE-118 standard test system, a sense of the data after the code)

研究表明，构成K一L变换矩阵的向量也就是ToePhtz矩阵的特征向量。与此同时，离散 余弦变换矩阵逼近于ToePutz矩阵的特征向量矩阵，所以离散余弦变换矩阵与自然图像的 K一L变换矩阵十分相似。经过离散余弦变换后的变换系数块的协方差矩阵Cy非常接近对角 阵，即除了对角线元素以外，其它很多元素都近似为0，并且在左上角集中了主要能量。这 反映了自然图像大部分区域变化不大，亮度突变只占少数，即图像能量以低频成分为主的特 性。通过变换后的量化，舍弃对视觉效果影响较小的次要信息，可达到进一步的压缩效果。 虽然从去相关性能的意义上讲，DCT是一种次于K一L变换的准最佳变换，但是从算法实现的角度来看，DCT则远远优于K一L变换。首先，当图像的分块大小确定后，DCT的变换矩阵也就随之确定了，不随输入信号的统计特性变化而变化 其次，二维DCT能够分解成两次一维DCT，有利于硬件实现。 (Studies have shown that constitute a K L transformation matrix vector is ToePhtz eigenvector of the matrix. At the same time, discrete The cosine transform matrix approximation in ToePutz matrix eigenvector matrix, so the discrete cosine transform matrix and natural images Is very similar to a K L transformation matrix. After discrete cosine transform, the transform coefficient block of Cy is very close to the diagonal of covariance matrix Matrix, namely except diagonal elements, many other elements are approximate to 0, and focused the main energy in the upper left corner. this Reflects the natural images most area changed little, brightness mutations accounted for only a few, the energy is given priority to with low frequency components of image Sex. Through quantitative after transformation, abandoning smaller effect on the visual performance of secondary information, can achieve further compression effect. Although from related to the performance of the sense, DCT is a kind o)

Matlab packet for generating G and H matrix for RS codes in binary form

数值计算方法与分析，典型的算法介绍，一本知识点比较全面的书(Numerical Algorithms for the typical method of introduction, a book more comprehensive knowledge points)

这是一个模糊聚类代码（matlab）供大家学习(This is a fuzzy clustering code (Matlab) for all study)

包含了数值计算的绝大部分程序，依照英文可以查找级程序(Contains most of the numerical calculation procedure can find level program in accordance with English)

一个MATLAB 的图像处理和灰度变换的程序，这个是老师留的作业，里面有详细的讲解过程，非常的详细，对做图像的朋友非常有用(A MATLAB image processing and gray-scale transformation program, this is the teacher to stay the operation, which explain in detail the process, very detailed images of a friend is very useful to do)

说明：  在matlab下运行，实现基于模拟退火算法的函数求极小值算法，绝对能运行成功！(Run in matlab to realize the function based on simulated annealing algorithm for seeking the minimum, the absolute can run successfully!)