ref-simu

非线性方程组的牛顿法matlab程序，采用符号运算，输入参量为含参的代数式子，无需分离出各个矩阵。(Newton method of nonlinear equations matlab program, using symbolic computation, input parameters for children with participation of algebraic, without separating out the various matrices.)

MATLAB的用户图像界面（GUI）（源码可见），可直接运行，依次为打开原图-三分图开输出alpha图，接着打开背景图可合成新图像(MATLAB user graphical interface (GUI) (source visible), can be directly run, followed by open the original- plans to open three-point output alpha map, and then open a new background image can be synthesized)

说明：  自制的快速傅立叶变换函数，可以用来对比工具自带的fft函数，比较其执行时间随Ｎ值变化的情况(privately fast Fourier transform function can be used to contrast the instruments onboard fft function, compared with the time of its implementation N changes in the value of)

matlab code for FDTD analysis in 3 dimension

自己做的，发动机启动或断开控制模型，可以控制发动机的启停(Do it yourself, engine start or disconnect the control model, you can control the engine start and stop)

BPSK与QPSK调制解调系统的Matlab仿真程序； 发送滤波器与接收滤波器均为根升余弦滚降滤波器； 信道噪声为加性高斯白噪声； 绘制BPSK与QPSK调制下的误码率与信噪比曲线图，并与理论曲线进行对比。 (BPSK and QPSK modulation and demodulation systems Matlab simulation program transmit and receive filters are root raised cosine filter roll-off filter channel noise is additive white Gaussian noise draw BER BPSK and QPSK modulation with a letter under noise ratio graph and compare with the theoretical curve.)

llde程序是一个用于降维的程序。用于降低数据的维数，更好精简冗余信息。(ddle is used for data dimention reduction.)

KML文件图形化显示，使用此插件，必须安装GOOLE EARTH才能正确使用(KML files, graphical display, use this plugin, you must install the GOOLE EARTH to use)

使用个股日内髙频收益率计算己实现值进行分析,同时计算得到二阶矩 和高阶矩值并进行对比。本文根据己实现量的大小将所有样本股分为己实现值由 小到大的姐别,分别跟踪各股票组合的收益,探索预期收益与个股己实现值之间 的变化关系,然后将分组的结果应用于多空策略,为提高资产配置收益提供参考。 同时,将各己实现变量和各类对预期收益产生影响的控制变量放在一起构建 Fama-MacBeth截面回归,分析高频已实现量是否具有定价能力。(The realized value is calculated by using the daily gust rate of return of individual stocks, and the second-order moments are obtained by calculating at the same time. Comparisons are made with higher order moment values. This paper divides all sample stocks into realized values according to the size of realized stocks. Sisters from small to large track the earnings of each stock portfolio, and explore the relationship between expected earnings and the realized value of each stock. Then the grouping results are applied to the multi-empty strategy to provide reference for improving asset allocation returns.)

说明：  MATLAB编写的数值分析实验的一些小程序(MATLAB prepared by the numerical analysis of a number of small experimental procedure)