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» Complexity of Reasoning over Temporal Data Models
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CSCW
2012
ACM
13 years 5 months ago
Blogs as a collective war diary
Disaster-related research in human-centered computing has typically focused on the shorter-term, emergency period of a disaster event, whereas effects of some crises are longterm,...
Gloria Mark, Mossaab Bagdouri, Leysia Palen, James...
SIGMOD
2010
ACM
598views Database» more  SIGMOD 2010»
15 years 2 months ago
Ricardo: integrating R and Hadoop
Many modern enterprises are collecting data at the most detailed level possible, creating data repositories ranging from terabytes to petabytes in size. The ability to apply sophi...
Sudipto Das, Yannis Sismanis, Kevin S. Beyer, Rain...
DIALM
2010
ACM
194views Algorithms» more  DIALM 2010»
14 years 7 months ago
Prioritized gossip in vehicular networks
We present a method for using real world mobility traces to identify tractable theoretical models for the study of distributed algorithms in mobile networks. We validate the metho...
Alejandro Cornejo, Calvin C. Newport
SP
1997
IEEE
134views Security Privacy» more  SP 1997»
15 years 1 months ago
A Logical Language for Expressing Authorizations
A major drawback of existing access control systems is that they have all been developed with a specific access control policy in mind. This means that all protection requirement...
Sushil Jajodia, Pierangela Samarati, V. S. Subrahm...
VG
2003
14 years 11 months ago
Cell Projection of Convex Polyhedra
Finite element methods commonly use unstructured grids as the computational domain. As a matter of fact, the volume visualization of these unstructured grids is a time consuming t...
Stefan Röttger, Thomas Ertl