signal1

两电平脉宽调制变换器，希望对于电力电子与电力传动专业研一学生有用。(Two-level PWM converter, hope for the power electronics and power transmission expertise useful to a student research.)

this is the code about how to choose the best gen of the GA. it is use the roulette wheel algorithm, where the best gen will be selected randomly using this.

This program will detect the license plate region with segmentation and extraction and recognition

自己设计的脉冲成形滤波器，采用matlab编码，并产生一个序列，输出经过成形后的波形(Pulse shaping filter design using matlab coding and generate a sequence, the output waveform after forming)

本压缩包中含有Contourlet的源程序，他被广泛的应用与图像融合中(The compressed source code of the Contourlet the package contains, he was a wide range of applications and image fusion)

说明：  用matlab实现巴特沃斯高通和低通滤波滤波，对图像进行相应的处理(Using matlab to achieve Butterworth high-pass and low-pass filtering filtering, the image corresponding treatment)

RNW_perm(A) 利用Ryser-NW方法，计算n*n矩阵A的积和式。计算时间随着n 以2的指数倍增长。计算20*20以内的矩阵很快。 Hperm(A) 利用双元素展开计算非常稀疏的矩阵的积和式 symmRegular(n,k,m) 该命令要调用symmGen函数。 生成对称的k-regular n阶0-1矩阵的启发式算法。 参数n,k是必须的。m的默认值是10。 m设定尝试次数，如果该命令显示 fail ,表明经过m次尝试， 没有生成满足条件的矩阵。 symmGen(n,k) 这里k是一个n维向量，该命令启发式地生成一个以k为行和 的对称0-1矩阵。不能保证每次都成功，不过成功的概率一 般情况下尚可接受。(some useful code for numerical analysis)

说明：  一个JPA的学习资料。很适合初学者进行学习。对于初学者来说是个非常宝贵的资料。(A JPA of learning materials. Is suitable for beginners to learn. For beginners is a very valuable information.)

说明：  在matlab中运行的用于对数据进行正交信号校正的程序(Matlab running in the data for orthogonal signal correction procedure)

溶液汽液平衡数据的计算，里面的包含的模型相信学化工的人一看就会明白。(VLE solution calculation, which contains the model believe that chemical science will understand at a glance.)