%0 Journal Article
%T Fluctuation of the Download Network
%A HAN Ding-Ding
%A LIU Jin-Gao
%A MA Yu-Gang
%A <br>韩定定
%A 刘锦高
%A 马余刚
%J 中国物理快报
%D 2008
%I 
%X The scaling behaviour of fluctuation for a download network we investigated a few years ago based upon Zhang＇s Econophysics web page is presented. A power law scaling, namely σ～〈f〉^α exists between the dispersion a and average flux 〈f〉 of the download rates. The fluctuation exponent α is neither 1/2 nor 1, which were claimed as two universal fluctuation classes in previous publication, while it varies from 1/2 to 1 with the time window in which the download data are accumulated. The crossover behaviour of fluctuation exponents can be qualitatively understood by the external driving fluctuation model for a small-size system or a network traffic model which suggests congestion as the origin.
%K 89
%K 75
%K Hc
%K 89
%K 75
%K Da
%K 89
%K 40
%K Dd<br>下载网络
%K Web页
%K 缩放比例
%K 计算机网络
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=9312BD2EF67F1200A55ED6F558FCA6DA&yid=67289AFF6305E306&vid=C5154311167311FE&iid=0B39A22176CE99FB&sid=849F08713EB6820A&eid=B5D9C773C430C13C&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=0