The-three-dimensional-FDTD

人员疏散过程建模仿真 采用元胞自动机的方法 对公共安全中的人员疏散问题进行了分析，在此基础上提出了一系列的基本假设，建立了人员疏散模型（Occupant Evacuation Model），并用Matlab实现了仿真程序。 通过在不同初始条件下的多次仿真测试，比较了不同条件下的仿真结果，由此提出了一些公共场所提高安全防范的措施和人员疏散方法的建议，以使灾害发生时尽量减少人员伤亡。 (Evacuation process modeling and simulation)

包含了滞环控制的.m文件和.mdl文件，所建模型是单相PWM(.m File contains the .mdl file and hysteresis control, the model is a single-phase PWM)

说明：  边缘预测提出了一种基于预测的、有一定自适应性的边缘检测方法。介绍了其原理和算法实现过程。通过计算两个相邻像素的灰度值的均值、均方差和梯度来预测下一个像素的灰度值,比较预测值和真实值来判断下一个像素是否是边界点。通过与现有同类算法的比较,证明了该算法的优越性(A predictive and adaptive edge detection method is proposed. The principle and implementation process of the algorithm are introduced. The gray value of the next pixel is predicted by calculating the mean, mean square deviation and gradient of the gray value of the two adjacent pixels. The prediction value and the real value are compared to determine whether the next pixel is a boundary point. The superiority of this algorithm is proved by comparing with the existing similar algorithms.)

这本书讲述了认知无线电的发展，以及认知无线电的重要性，是认知无线电的开山之作，里面的理论通俗易懂，容易理解，有很多仿真图形(This book describes the development of cognitive radio, as well as the importance of cognitive radio, cognitive radio for the mountains, which the theory easy to understand, easy to understand, a lot of graphic simulation)

关于Matlab2012经典超强教程，很实用，适合初学者(About Matlab2012 classic super tutorial, very practical, suitable for beginners)

SAR图像压缩感知 matlab代码 对应着汕大闫老师的那本压缩感知及其应用，有需要的可以看一下！！(SAR image compression matlab code that corresponds to the perception that this compressed sensing and its application Shantou Yan teacher in need can look at! !)

说明：  最小二乘法辨识电池参数，适合参考，希望对电池研究人员有帮助(Identification of battery parameters by least square method)

说明：  VMD是通过迭代搜寻变分模型（具体怎么搜寻，请亲们自己看，我主要讲他的大概）最优解， 来确定我们所知的模态uk(t)及其对应的中心频率ωk和带宽。 每个模态都是具有中心频率的有限带宽（就是在频域中有在一定的宽度）。所有模态之和为源信号。(VMD is to determine the modal UK (t) and its corresponding central frequency, k and bandwidth by iteratively searching for the optimal solution of the variational model (see dear friends for details, and I will mainly talk about his approximate solution). Each mode is a finite bandwidth with a central frequency (that is, a certain width in the frequency domain).The sum of all modes is the source signal.)

the famous problem of travel salesman problem..one of the solutions

fft分析：方法简单实用，希望能够帮助大家，大家可以参考一下(fft Analysis：very easy！)