plecs_pvstring

利用中心差分法计算无阻尼结构动力响应，并作图(Using central difference method to calculate the structural dynamic response)

精通Matlab与C_C++混合程序设计.rar 是精通Matlab与C_C++混合程序设计 这本书的配套源码(Proficient in Matlab and C_C++ Mixed program design. Rar is proficient in Matlab and C_C++ Mixed programming matching this book source)

ART重建算法，该算法可用于CT图像重建或EST图像重建-Matlab ART reconstruction algorithm, which can be used for CT image reconstruction or image reconstruction EST(matlab reconstruction algorithm, which can be used for CT image reconstruction or image reconstruction EST)

比较QR分解算法与迫零算法的误码率，支持BPSK调制和QPSK调制，天线数量可以选择(Compare QR decomposition algorithm and zero forcing algorithm BER)

说明：  matlab 系统仿真 实例第六章所有例子，可以学习下；(matlab simulation examples of Chapter VI of all the examples, you can learn from the next )

ssim structural similary measure

RRT算法是一种基于采样的规划算法,采用算法生成的相邻点之间的路径可以是经过运动学动力学仿真生成的可执行曲线,通过对状态空间中的采样点进行碰撞检测避免了对空间的建模,适合用来解决含有运动力学约束的路径规划问题.(RRT algorithm is a sampling-based planning algorithm, using path algorithm generated between adjacent points can be generated through the kinematics and dynamics simulation executable curve, through the state space of the sampling points to avoid the collision detection modeling of space, a suitable solution to contain the movement mechanics path planning constraints.)

说明：  实现最速下降法当中的一维搜索时候的最佳步长的确定。(achieve steepest decline among law of one-dimensional search the best time to step determination.)

在科研中，大量时间花在统计年鉴的搜集上，例如找《中国城市统计年鉴》中2000多个市，要对分散的八个城市群找对应的数据，如果每次筛选会花费大量时间，如果做好excel表头，把对应的城市写上去会在多个文件多个工作组查找满足要求的数据，直接按需要保存成excel，进行后续分析。(In the research, the amount of time spent on the Statistical Yearbook of the collection, for example, to find " China City Statistical Yearbook" in more than 2000 cities and want to find a group of eight cities scattered corresponding data, if each screening will spend a lot of time, If you do excel header, the corresponding write up the city will look to meet the requirements of data in multiple files multiple workgroups, saved directly as needed to excel, for subsequent analysis.)

AK_model_and_Learning_by_doing_model matlab code