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MonteCaro simulation of an M-4 PSK communication system

This is my 2 nd year project - work flow engine, implemented to manage the emplyment at company.

code for sattelite calculaton

Autonomous Robotics Mobile Robot Kinematics

The Vigenère cipher is a method of encrypting alphabetic text by using a series of different Caesar ciphers based on the letters of a keyword. It is a simple form of polyalphabetic substitution.Though the cipher is easy to understand and implement, for three centuries it resisted all attempts to break it this earned it the description le chiffre indéchiffrable (French for the indecipherable cipher ). Many people have tried to implement encryption schemes that are essentially Vigenère ciphers.[3] Friedrich Kasiski was the first to publish a general method of deciphering a Vigenère cipher.Unlike the monoalphabetic ciphers, polyalphabetic ciphers are not susceptible to frequency analysis, as more than one letter in the plaintext can be represented by a single letter in the encryption.

kmean algorithm for image segmentation

programme listing for backprojection methode

关于粒子群优化的好文章，文章的PSO说话的很详细，希望能给新手一些帮助。(About Particle Swarm Optimization a good article, the article PSO speak in great detail, I hope to give beginners some help.)

时间序列灰色预测G(1,1)程序，返回预测值（可指定预测数目）和精度检验统计量(Time series Grey G (1,1) process, return predictive value (can specify the number of predicted) and accuracy test statistics)

画贝塞尔（besselj）函数和第二类变型贝塞尔（besselk）函数图像(the images of besselj and besselk function )