Evolution of Weighted Networks by Duplication-Divergence Mechanism

The duplication and divergence process is ubiquitous in nature and man-made networks. Motivated by the duplication-divergence mechanism which depicts the growth of protein networks, we propose a weighted network model in which topological evolution is coupled with weight dynamics. Large scale numerical results indicate that our model can naturally generate networks with power-law-like distributions of degree, strength and weight. The degree-strength correlation is illustrated as well. These properties are in agreement well with empirical data observed in real-world systems. Furthermore, by altering the retention probability δ, weighted, structured exponential networks are realized.     

Synchronizing Complex Networks by an Adaptive Adjustment Mechanism

We propose an adaptive adjustment mechanism for synchronizing complex networks, in particular for sociological or/and biological systems. We do not take it for granted that a dynamical system is put on isolated nodes and they are coupled with each other by one （or more） variable（s）, as employed in most previous models. As a replacement, we suppose that each node may have any finite number of possible states, and their evolutions with time are determined by their nearest-neighbouring （or even second-nearest-neighbouring, etc） nodes in an adaptive adjustment mechanism. It is found that synchronization can be achieved for almost all connected networks and that the scale-free property can evidently improve the synchronizing speed.     

野外铝管接头故障的处理方法

乐清市大荆广电中心站于2000年完成HFC网络的建设，采用60V集中馈电方式供电，到2004年，随着用户的发展，本站网络采用星型拓扑结构，并应用大量12C—FT电缆作为干线传输网，以满足用户需求，如何确保电视信号质量的稳定是目前迫切需要解决的问题。     

CCNS 2007筹备工作启动 数字化与增值业务为研讨重点

我国数字电视与有线网络界的年度盛会——“2007年中国数字电视与网络发展高峰论坛暨第十五届全国有线电视综合信息网学术研讨会”（CCNS2007）将于9月14～19日在新疆乌鲁木齐市隆重召开，会议主题是“数字化与增值业务”。     

高负荷情形开网络的强逼近

本文用强逼近理论,对一般排队网络在高负荷情形下,得到了队长,虚等待时间和顾客在网中逗留时间的强逼近定理.同时还得到了队长嵌入过程的强逼近定理.     

浅析HFC网络光发射机的入口电平

介绍光发射机的选择方法与入口电平的确定和调试方法     

从上海ATM试验网看ATM发展的若干问题

本文主要探讨在上海邮电ＡＴＭ试验网的建设中遇到的若干技术问题，并根据对上海的市场调查，就公众对ＡＴＭ发展关心的热点做一些分析．     

北电信息

北电VoIP话音解决方案服务第20届冬奥会；北电将引入OFDM、MIMO；北电解决方案服务上海电子报税网；北电融合网络拓展新市场。