Pcm_1

小学数学一个奥数题目的编程，方便运算出此类型的题目(Primary Mathematics Olympiad title of a program to facilitate the operation of this type of subject)

Image Encryption based on the RGB PIXEL Transposition and Shuffling Abstract — Privacy is one of the key issues information Security addresses. Through encryption one can prevent a third party from understanding raw data during signal transmission. The encryption methods for enhancing the security of digital contents has gained high significance in the current era of breach of security and misuse of the confidential information intercepted and misused by the unauthorized parties. This paper sets out to contribute to the general body of knowledge in the area of cryptography application and by developing a cipher algorithm for image encryption of m*n size by shuffling the RGB pixel values. The algorithm ultimately makes it possible for encryption and decryption of the images based on the RGB pixel. The algorithm was implemented using MATLAB. Index Terms — Cryptography, Encryption, algorithm, cipher image

MATLAB7.0/simulink实现的全套的自抗扰控制器资料，包括mdl文件和S-function。(Auto-Disturbance Rejection Controller implement by MATLAB7.0/simulink。)

The code includes the implementation of inverse convolutional code and testing of it.

sigma-delta ADC轉換之matlab模型，整個系統都可模擬。(sigma-delta ADC conversion of matlab model, the whole system can be simulated.)

PSO算法，功能强大，可自行替换其中的数据(PSO algorithm, a powerful, free to replace the data)

说明：  本文使用了两种方法优化matlab的程序，缩短了算法的时间。方法1：使用Optimization Toolbox中的并行优化；不需要修改代码。方法2：增加一行代码，即可优化(Improving Optimization Performance with Parallel Computing)

说明：  仿真LMS均衡器 采用三径叠加信道，PSK调制，并计算误码性能(LMS equalizer simulation using three-path channel superimposed, PSK modulation, and calculate the BER)

水声有关近场信源定位的matlab程序，具有较高的参考价值！(The near-field acoustic source location matlab program, with a high reference value!)

代码为本人为写毕业论文，编写的几个合成地震记录的代码，包括cdp道集，共炮点道集以及一个简单的一层的地质模型对应的合成地震记录。(Man-made code-based write theses, prepared by several synthetic seismogram code, including cdp gathers a total of shot gathers, as well as a simple layer of the geological model of the corresponding synthetic seismogram.)