G-Rilling

已知一个序列x(n)=0.5cos(0.55*pi*n)+cos(0.45*pi*n),时域FFT分析其频谱。 （1）使用不同宽度的矩形窗截断该序列为M点，取M分别为：20，40，160,观察不同长度对频谱影响；（2）使用哈明窗和凯泽窗重做；（3）对三种窗的结果进行分析比较；（4）总结窗类型和长度对频谱分析的影响。 (Known a sequence x (n) = 0.5cos (0.55* pi* n)+ Cos (0.45* pi* n), time-domain FFT analysis of its spectrum. (1) use a different width of the rectangular window of the sequence for M cut-off point, take M are as follows: 20,40,160, observing the impact of different lengths of the spectrum (2) the use of Hamming window and the Kaiser window redo (3 ) on the three windows analyzed and compared the results (4) summarize the type and length of window for spectrum analysis.)

images of fishes for claassifyication

数字图像滤波的程序，包括散斑噪声的生成，中值，均值，Lee，Kuan滤波算法的实现，还计算了三个指标：峰值信噪比，等效视数，散斑指数。(Digital image filtering process, including the generation of speckle noise, median, mean, Lee, Kuan filtering algorithm, also calculated three indicators: the peak signal to noise ratio, equivalent number, speckle index.)

求解DEA　CCR BCC 超效率 matlab程序(Solve the DEACCR BCC super efficiency matlab program)

说明：  声全息技术，里边包括全息技术的matlab程序，数据等。(Sound holographic technology, including holographic technology matlab procedures, data, etc.)

说明：  压缩包为模糊PID控制的直流电机的速度控制系统仿真，可进行相关学习(The simulation of the speed control system of DC motor with the compression package of fuzzy PID control can be used for relevant learning)

一段关于捷联惯导系统姿态解算的Matlab仿真程序,有关于误差的计算(Matlab simulation program solver paragraph on the attitude of SINS)

利用matlab进行时域有限差分模拟电磁场分布的编程案例。(Matlab FDTD programming for simulation of electromagnetic field distribution.)

采用最小二乘逼近作为拟合实验数据的方法,利用F检验,确定实验数据拟合优度及最佳阶数,用编制的程序来拟合实验数据,得到了较好的结果(Least-squares fitting)

说明：  某厂向用户提供发动机，合同规定，第一、二、三季度末分别交货40台、60台、80台．每季度的生产费用为 （元），其中x是该季生产的台数．若交货后有剩余，可用于下季度交货，但需支付存储费，每台每季度c元．已知工厂每季度最大生产能力为100台，第一季度开始时无存货，设a=50、b=0.2、c=4，问工厂应如何安排生产计划，才能既满足合同又使总费用最低．讨论a、b、c变化对计划的影响，并作出合理的解释(To provide users with a factory engine, contract, first, second and third quarter respectively, delivered at the end of 40, 60, 80. Quarterly cost of production (million), in which x is the quarter of the number of production. If the remaining after delivery, can be used for delivery next quarter, subject to payment of storage fees, for each element c of each quarter. The largest known plant production capacity of each quarter to 100, the beginning of the first quarter of stock, set up a = 50, b = 0.2, c = 4, asked how to arrange the production of the factory plans to meet the total cost of the contract makes the minimum . Discussion of a, b, c of the impact of change on the plan and make a reasonable explanation)