three

说明：  中文的基于matlab得直升机模拟，做的还行，就是有点假，实现没有只有他自己知道。(A helicopter flight control system simulation software package was introduced, which was developed on MATLAB 6.5. Several unit math models and system simulation were introduced. The software has made good effect on designing one helicopter flight control system. It is helpful for designing and velidating the control law of helicopter.)

梯度下降法是最早最简单，也是最为常用的最优化方法。梯度下降法实现简单，当目标函数是凸函数时，梯度下降法的解是全局解。一般情况下，其解不保证是全局最优解，梯度下降法的速度也未必是最快的。梯度下降法的优化思想是用当前位置负梯度方向作为搜索方向，因为该方向为当前位置的最快下降方向，所以也被称为是”最速下降法“。最速下降法越接近目标值，步长越小，前进越慢。(The gradient descent method is the earliest and most simple and most commonly used optimization method. The gradient descent method is simple to realize. When the objective function is a convex function, the solution of the gradient descent method is a global solution. In general, the solution is not guaranteed to be the global optimal solution, and the gradient descent method is not necessarily the fastest. The optimization idea of gradient descent method is to use the current position negative gradient direction as the search direction, because the direction is the fastest descending direction of the current position, so it is also called the steepest descent method. The faster the slowest descent approach is closer to the target, the smaller the step, the slower the progress.)

说明：  MATLAB时频分析工具箱,很红用，很好用，行了吧。靠。(tftb mmmmmmmmmmmmm)

MatrixVB 使用手册:介绍在VB中调用matlab函数的控件的使用方法及例子。在VB中使用强大的matlab运算工具！(MatrixVB User’s Guide)

利用文中命令码，可以在ANSYS中实现如何输入地震波，这对结构动力分析非常重要！(Using text command code, can be implemented in ANSYS how to input seismic wave, which is very important for structural dynamic analysis!)

this is a web application for mobile collabartive learning application

雷达定位算法，通过收集三个雷达的数据确定飞行物的坐标位置(Radar positioning algorithm, by collecting three radar data to determine the coordinates of the location of flying objects)

说明：  是调制解调的VC远程序,对于要学习这方面知识的初学者很有帮助,快来下载吧(Is the modulation and demodulation of the VC process is far, for to learn this knowledge useful for beginners, Come download it)

Implementation of K-MEANS classification of 2D data of this code, the high speed

对MATLAB的MAT文件进行读书，用C++语言实现(read and write mat files, using C++ Language)