the-structure-of-truss

说明：  四阶Runge-kuta求解算法matlab代码 含一篇文献介绍(Fourth-order algorithm lunge-kuta)

本课件详细介绍了matlab，相信对初级入门者会有很大帮助！(This courseware introduces matlab, that would be great help for junior beginners !)

利用二叉树及蒙特卡罗方法计算欧式美式权证的例程，需要的可自行下载(binary tree using the Monte Carlo method and the American Continental E routines, and we need to be downloaded)

Various solution designs for heat transfer

BP神经网络容易陷于局部极小值，PSO算法在无约束非线性函数优化方面性能优越，通常可以直接找寻到全局最优解，即使不能搜多到全局最优解，也距离全局最优点不远。当然，基本PSO算法陷入局部极值也是有的。对于这个缺点目前还没有找到比较有效、省市的解决方案。本案例实现利用PSO算法和BP算法共同训练神经网络，先将网络进行PSO算法训练，然后BP算法接着进行小范围精细搜索，PSO算法训练神经网络的本质就是将输出误差函数（即能量函数）看成目标函数，PSO对能量函数进行全局寻找最小值。(BP neural networks are prone to local minimum values. The PS algorithm has superior performance in the optimization of unconstrained nonlinear functions. It can usually find the global optimal solution directly. Even if it can not find more global optimal solutions, it is not far from the global best. Of course, there is also a local extreme of the basic PO algorithm. For this shortcoming, there is no more effective, provincial and municipal solution. This case realizes the use of the SO algorithm and the BP algorithm to train the neural network. First, the network is trained in the SO algorithm, and then the BP algorithm is followed by a small range of fine searches. The essence of the PO algorithm training neural network is to regard the output error function(ie, the energy function) as the objective function, and the PO seeks a global minimum value for the energy function.)

3GPP标准中用于MIMO信道建模的SCM信道模型，matlab版本(3GPP standard for MIMO channel modeling SCM channel model, matlab version)

对声音信号进行butter低通滤波,对录入的信号进行傅里叶变换，同时对比滤波前后，声音信号的不同(Butter sound signal low-pass filtering, of the Fourier transform of input signals, while before and after filtering, different sound signal)

基于modelcenter和粒子群算法MATLAB最优化解决装箱问题。包含代码、模块、PPT、课程论文(Based on MATLAB modelcenter and particle swarm optimization to solve the packing problem. It contains code modules, PPT, course papers)

单相调功电路，对初学者更好的理解其基本原理有帮助(Single Phase Power Regulator circuit, a better understanding of beginners the basic principles of their help)

finite element code based on disc galerkin method.I ve download it from some file exchange sites based on matlab programming