cropping

local histogram. My friend give this to me. I hope it will be helpful to others.

学习MATLAB的simulink工具箱时会经常遇到的问题，很好很受用，肯定对初学者有帮助。(MATLAB-simulink toolbox learning problems often encountered when, well popular with, certainly helpful for beginners.)

Abstract The key of developing high frequency wideband communication system is how to model the HF wideband channel. Some HF wideband models are discussed and compared in this paper, including Vogler model, parallel subband model, two improved Watterson models and Pseudo- Deterministic model. As a deterministic model, Volger model basically describes the characteristics of HF wideband channel, but it also needs to be improved. The improvement of Vogler model is given in this paper.

马尔科夫链蒙特卡洛算法的一个例子，希望有所帮助(Markov chain Monte Carlo algorithm is an example to help)

弹道计算工具，包括文档说明，和相关源代码，好东西(Ballistic calculation tools, including documentation, and related source code, good things)

m-k突变检验及趋势检验，可以很好的解释气候等变化的显著性趋势和突变点(Mk mutation test and trend test, can well explain the climate change trend and the significance of mutations)

matlab中实现三维空间中一点绕一条直线旋转的程序，输入一点，一条直线和一个角度，输出旋转后的点。(Three-dimensional space, matlab point in a straight line rotating around the program, enter the point, a straight line and a point of view, the output after the point of rotation.)

一个按照各类汽车参数做的聚类分析的mapreduce程序，可以看到各车型的分类情况。(Mapreduce program in accordance with all types of vehicle parameters to do a cluster analysis, you can see the various models of classification.)

一本讲解matlab编程和应用的书籍，内容非常全面、讲的非常透彻，全称为matlab5.3精要、编程及应用(Matlab on a programming and application of the books, the content is very comprehensive, very thorough speaking, all known as matlab5.3 essence, programming and application)

the Simulink of f16 jet including engine model 6dof model aerodynamic model atmospheric model actuator model the Simulink of f16 jet including engine model 6dof model aerodynamic model atmospheric model actuator model