logistic

This program implements equation (2.26) using the waterfilling algorithm

报童问题(负指数分布) 几个参数： 卖出报纸挣a元，退回报纸赔b元 卖报量y,订报量z，订报量上限z_up 观察期的总天数t,用于积累天数的ti 总的平均损失量ave_loss，供过于求损失loss1,供小于求损失loss2,ave_loss=loss1+loss2 最佳订报量superz,最小损失量ave_loss_min (newsvender)

matlab最小二乘法，数值分析，抛物线方程(matlab least squares method, numerical analysis)

跳频系统仿真 基于matlab simulink的源程序，包括框图(Frequency hopping system simulation based on matlab simulink source, including block diagram)

绘制柯西雪花曲线，直接运行koch（x）就可以得到x阶的曲线。(Draw koch snow curve.Run koch(x) directly and you can get the x step koch snow curve)

aniliza el espectro de frecuencia de un archivo .wav

It calculates the relative amplitude of the digital modulated signal

使用案例讲述了MATLAB的数据预处理，有源代码说明( Data preprocessing)

When doing optimization, GA algorithm was initially selected, but the instability of the GA (or local optimization) is really frustrating, before and after the resulting difference can at times reach more than 30 , at that time due to time reasons, I chose to optimize 1000 times, then the minimum value of the most optimal solution. Although the problems are solved, but an academic, this style of running is pretty embarrassing. So, I downloaded a GA-PSO algorithm, try using the combination of GA and PSO optimizing strategies, results algorithm issues, efficiency and good. I downloaded the original algorithm, there is a problem is that it is aimed at all upper and lower limits of the design variables are the same, so I modified the program and improvements, you can now deal with upper and lower limits of the inconsistency problem and fix the bug. Now, program modifications, and share, hoping to be useful to you

来源于电力系统分析教材，使用IEEE33节点配电网前推回代潮流计算程序，程序有大量注释，利于初学者学习。 (From power system analysis materials, use IEEE33 node distribution grid before backward sweep flow calculation program, the program has a large number of comments, which will help beginners to learn.)