1.This article's all copyright belong to Adam Chapweske(author).If you want to use any document,graph,program, or schematics for commercial purpose,please contact author. author email:achapwes@panda.cs.ndsu.nodak.edu
2.The article's chinese version remain with Joy Show. And Adam permit translate the source to chinese.Also,Adam Chapweske have full rights to treat it same like Joy(ie, publish,modify) translator email:shouxj@sohu.com
3.The article is used for educational purposes only,NOT for commercial.If some web want to publish,they must get admission from author or translator (for chinese version).
4. Author and translator all donnot imply any warrenties or guarantees with article.
