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题目：有1、2、3、4个数字，能组成多少个互不相同且无重复数字的三位数？都是多少？ 1.程序分析：可填在百位、十位、个位的数字都是1、2、3、4。组成所有的排列后再去 　　　　　　掉不满足条件的排列。 (Title: There are numbers 1,2,3,4, how many can be composed of distinct three-digit numbers without repetition? Is how much? 1. Program Analysis: fill in the hundred, ten, a bit of the numbers are 1,2,3,4. Composed of all the permutations and then remove the arrangement does not meet the conditions.)

是一篇pdf文档 。主要讲了，matlab中的GUI模块，得一些常见错误和解决办法。(Is a PDF document. Mainly about, the GUI module in MATLAB, some common errors and solutions. )

All optical discrete Fourier transform processor for 100Gbps OFDM

单相光伏并网控制系统，MATLAB环境下模型仿真(Single-phase photovoltaic grid control system simulation model under MATLAB environment)

希尔伯特黄变换是，hilbert+emd的综合。本文件是典型的hht的程序(The Hilbert yellow transformation is the synthesis of hilbert+emd. This file is a typical HHT program)

本软件是我公司开发的具有实际用途即核磁共振含油率测试分析的源代码。(The software is developed with the actual use of the rate of oil that NMR analysis of the test source code.)

pso techniques for use in various application

鲁棒自适应matlab程序和报告，验证已通过(Robust Adaptive matlab procedures and reporting, verification has passed)

matlab圆度误差的评定算法，最小二乘法，最小包容区域法，最大外接圆法，最小内接圆法(roundness error matlab assessment algorithm, the least square method, the minimum tolerance zone method, the largest circumcircle method, the smallest within the inscribed circle method)

kalman来控制摄像头的运动，比较容易看懂的算法(kalman filter is used to control the camera)