DF[DF_with_Selection]

说明：  从方程组中消去一些未知函数及其各阶导数，得到只含有一个未知函数的高阶常系数线性微分方程(Eliminated from the equations of some unknown function and its first derivative, the only unknown function contains a higher-order linear differential equations with constant coefficients)

the day of year是指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， 输入为对应的 the of year。 (the day of year is the year the number of days have been lost (including the day). In the average year, it ranges from 1 to 365, in a leap year, it ranges from 1 to 366. Write a MATLAB program, enter the year, month, day, enter the corresponding the of year.)

基于FDTD的1D点源分布远远场场分布，程序简单，易于阅读和使用，适合初学者。 (FDTD-based one-dimensional distribution of far field point source field distribution, the program is simple, easy to read and use, suitable for beginners.)

电子产品软件验证越来越重要，通过加速硬件软件协同的目标、价值和方法充分证明(asic speed)

最权威版nsga2的matlab版 ，国际EMOO研发小组的成果。(The most authoritative version of nsga2 the matlab version of the results of the international EMOO development team.)

regular SMPS 分析，从频道电压和初始值一直转换到dN/dlogDp(regular SMPS analysis from channel voltage and the initial value has been converted to the dN/dlogDp)

gmcalab 快速广义的形态分量分析，本程序的性能已经达到较高水平，光纤陀螺输出误差的allan方差分析，具有丰富的参数选项,仿真效率很高的，用MATLAB实现动态聚类或迭代自组织数据分析，阐述了负荷预测的应用研究,通过matlab代码。( gmcalab fast generalized form component analysis, The performance of the program has reached a high level, allan FOG output error variance analysis, It has a wealth of parameter options, High simulation efficiency, Using MATLAB dynamic clustering or iterative self-organizing data analysis, It describes the application of load forecasting, By matlab code.)

this is a powerfull code in mix and hidden picture in another pic for staginography

遗传算法及其MATLAB实现 含源程序 GA算法及其MATLAB实现 含源程序(MATLAB Genetic Algorithm and Its realize containing source GA algorithm and its realization with MATLAB source)

Settles an invoice time of reverberation. A test signal - white noise. The analysis to be made through 1/3 octava filters. Time of record of a signal of white noise 1 second. Duration of the analysis of process of reverberation 1 second. Time of transients which arise during reverberation is considered.