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CSCW
2010
ACM
14 years 6 months ago
An empirical study of critical mass and online community survival
There is general consensus that critical mass at inception ensures the sustained success of online communities. However, no clear understanding of what constitutes such a 'cr...
Daphne R. Raban, Mihai Moldovan, Quentin Jones
ICC
2009
IEEE
168views Communications» more  ICC 2009»
14 years 4 months ago
Degrees of Freedom of Cooperative MIMO in Cellular Networks
— In cellular networks, relays and/or mobiles can cooperate to improve the overall system performance. For example, once the transmission from a base station with multiple antenn...
Si-Hyeon Lee, Sae-Young Chung
ICC
2009
IEEE
142views Communications» more  ICC 2009»
14 years 4 months ago
Revealing Social Networks of Spammers Through Spectral Clustering
—To date, most studies on spam have focused only on the spamming phase of the spam cycle and have ignored the harvesting phase, which consists of the mass acquisition of email ad...
Kevin S. Xu, Mark Kliger, Yilun Chen, Peter J. Woo...
ICWE
2009
Springer
14 years 4 months ago
Trust and Reputation Mining in Professional Virtual Communities
Abstract. Communication technologies, such as e-mail, instant messaging, discussion forums, blogs, and newsgroups connect people together, forming virtual communities. This concept...
Florian Skopik, Hong Linh Truong, Schahram Dustdar
SIGUCCS
2009
ACM
14 years 4 months ago
Getting iTunes U at Ithaca College up and running!
iTunes U is a free service from Apple that allows for the easy organization and distribution of content through iTunes. In the spring of 2008, Ithaca College signed a contract wit...
Beth M. Rugg