目前电信运营中常见的宽带接入方式以IP DsLAM和纯二层LAN接入为主。随着宽带业务急剧增长，在网络规模逐渐扩大的同时，产生了不适应宽带业务发展的瓶颈，其中比较尖锐的就是用户定位识别问题并由此导致了用户及其业务不可控。-Currently, the common telecom operators, broadband access, LAN access to the IP DsLAM and pure two-story main. With the rapid growth of bro

二维均匀介质pml吸收层的实现，介质可任意设置-the application of pml boundray of two dimension media

二维GMRF模拟实现代码，对石油行业油气储层建模有兴趣的可以参考。-2D GMRF modeling program code, it is useful for students interested in petroleum reservoir modeling.