@article{oai:mejiro.repo.nii.ac.jp:00000291,
 author = {江下, 雅之 and Eshita, Masayuki},
 journal = {目白大学総合科学研究, Mejiro journal of social and natural sciences},
 month = {},
 note = {A lot of Internet users are posting their messages on various kinds of message boards. The number of participants on each message board may increase consistently ; however, within a month few people continues to access it. Its structure changes dynamically in relation to the behavior of active users. I extracted over one million messages from "Livedoor Message Board" which belongs to "Yahoo! Japan Message Boards". The results of statistical analysis for these messages show that the behavior of active users changes according to the level of the number of messages actually posted, and that the leaders are replaced in a few months., 5, KJ00004761486, P, 社会科学, Social Science},
 pages = {13--33},
 title = {電子掲示板のダイナミズムに関する研究 : ライブドア・ショックが電子掲示板の投稿活動に及ぼした影響},
 volume = {(3)},
 year = {2007},
 yomi = {エシタ, マサユキ}
}