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已知地震加速度记录，运用快速傅里叶变换求加速度的傅里叶谱。(Known earthquake acceleration records, the use of a fast Fourier transform seek acceleration Fourier spectrum.)

计算这一年已经逝去的天数（包括当天）。在平年中，它的取值范围为1到365，在闰年中，它的取值范围1到366。编写一个MATLAB程序，输入年，月，日，输出为对应的该天是当年的第几天。 闰年是这样规定的 1）.能被400整除的年为闰年 2）能被100整除但不能被400整除的年不为闰年 3）.能被4整除但不能被100整除年为闰年 4）.其余的年份不为闰年 (This year has calculated the number of days elapsed (including that day). In non-leap year, it ranges from 1 to 365 in a leap year, it s the range of 1 to 366. Write a MATLAB program, enter the year, month, day, corresponding to the output of the first year of the day is a few days. This leap is required 1) is divisible by 400 is a leap year 2) can be divisible by 100 but not divisible by 400 years is not a leap year 3) be divisible by 4 but not divisible by 100 is a leap year 4) the rest of the year is not leap year)

Bradley local image thresholding The brief idea of the algorithm is that every image s pixel is set to black if its brightness is T percent lower than the average brightness of the surrounding pixels in the window of the specified size, otherwise it is set to white.

说明：  模型降阶方法 MATLAB schur方法(Using matlab to program the control system )

说明：  传统RRT算法，快速拓展随机树，路径规划(Traditional RRT algorithm,rapidly expanding random tree,path planing)

一个很详细的压缩编码，基于MATLAB语言编写的，确实很实用。(A very detailed coding, based on the MATLAB language, is indeed very practical.)

主要介绍了svm的几种算法的中的具体不同和差别,随让内容简短,但对初学者来说是非常宝贵的(Mainly introduce the SVM algorithm in several different and specific differences, with the brief for content, but for beginners it is very valuable)

TD_LTE核心网中的EPC核心网引入策略及组网方案_张坤忠.pdf(Introducing strategy and networking solution _ Zhang Kunzhong.Pdf )

针对无刷直流电机的特性，使用simulink库模块进行反电动势控制仿真。(According to the characteristics of Brushless DC motor, the back EMF control simulation by using Simulink module.)

粒子群算法的matlab实现，自己写的，对初学者有一定帮助(good for learning)