782 search results - page 141 / 157 » Online communities as communities of practice: a case study |
ICDM
2010
IEEE
13 years 5 months ago
2010
IEEE
Citizen scientists, who are volunteers from the community that participate as field assistants in scientific studies [3], enable research to be performed at much larger spatial and...
CHI
2011
ACM
12 years 11 months ago
2011
ACM
Little research exists on one of the most common, oldest, and most utilized forms of online social geographic information: the “location” field found in most virtual community...
SIGMOD
2007
ACM
14 years 7 months ago
2007
ACM
Incomplete information arises naturally in numerous data management applications. Recently, several researchers have studied query processing in the context of incomplete informat...
SIGMETRICS
2008
ACM
13 years 7 months ago
2008
ACM
Despite significant efforts to obtain an accurate picture of the Internet's actual connectivity structure at the level of individual autonomous systems (ASes), much has remai...
WS
2005
ACM
14 years 29 days ago
2005
ACM
The pervasiveness of wireless devices and the architectural organization of wireless networks in distributed communities, where no notion of trust can be assumed, are the main rea...