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说明：  一个数如果恰好等于它的因子之和，这个数就称为“完数”，编写程序找出2～5000中的所有完数。(If a number is just equal to the sum of its factors, this number is called &quot complete number&quot , written procedures to identify 2 to 5000 in the number of all finished.)

用MATLAB模糊逻辑工具箱设计模糊控制器，并用SIMULINK仿真(MATLAB Fuzzy Logic Toolbox fuzzy controller design, and use SIMULINK)

最优化计算一书中非最小二乘优化问题源代码，已通过测试，可直接运行！(Optimize the calculation of a book of non-least squares optimization problem source code has been tested and can be run directly!)

地球物理领域地震波在随机介质中的多次散射波，采用解析解模拟。经典的Foldy 方法(Geophysics seismic waves in random media multiple scattering waves, using analytical solution. The classic Foldy method )

利用卡尔曼滤波器进行信道估计 提示：信道估计的状态方程和测量方程可分别表示为 要求：给出信道均方误差随样本数增加的曲线，给出matlab程序及具体的估计过程。 (Use of Kalman filter channel estimation Tip: the state of the channel estimation and measurement equations could be specified as required: given the channel mean square error increases with the number of samples to increase the curve, given the estimated matlab program and the specific process.)

digital image processing

8 queens on the chess board with matlab

阵列信号处理里面deDOA估计算法 MUSIC，ESPRIT算法，空间平滑MUSIC，非常好的！(Array signal processing algorithms which estimate deDOA MUSIC, ESPRIT algorithm, spatial smoothing MUSIC, very good!)

契比雪夫数字滤波器对心电信号进行数字滤波，采用零相位数字滤波，比较好的去处了基线漂移，比较适合于ST段的检测(the source program is about digital filter of Ecg signal ，we design a Chebyshev digital filter，we are satisfied about the results， succeeding in removing the baseline driftso be glad to share with you，)

this file is about risk managment in marketing....