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PODS
2001
ACM
135views Database» more  PODS 2001»
16 years 6 months ago
On the Complexity of Join Predicates
We consider the complexity of join problems, focusing on equijoins, spatial-overlap joins, and set-containment joins. We use a graph pebbling model to characterize these joins com...
Jin-yi Cai, Venkatesan T. Chakaravarthy, Raghav Ka...
PERCOM
2006
ACM
16 years 6 months ago
On the Fly Service Composition for Local Interaction Environments
Dynamically creating new, composite services "on the fly" using existing ones in a local interaction environment (e.g. a home, meeting room, airport lounge, etc.) presen...
Hossein Pourreza, Peter Graham
MOBISYS
2007
ACM
16 years 6 months ago
Rendezvous-based access control for medical records in the pre-hospital environment
We present rendezvous-based access control for access control in the pre-hospital environment. Rendezvous-based access control is a simple cryptographic access control method that...
Feike W. Dillema, Simone Lupetti
DCC
2007
IEEE
16 years 6 months ago
Bounds on Redundancy in Constrained Delay Arithmetic Coding
We address the problem of a finite delay constraint in an arithmetic coding system. Due to the nature of the arithmetic coding process, source sequences causing arbitrarily large ...
Ofer Shayevitz, Eado Meron, Meir Feder, Ram Zamir
SOSP
2001
ACM
16 years 3 months ago
Anticipatory scheduling: A disk scheduling framework to overcome deceptive idleness in synchronous I/O
Disk schedulers in current operating systems are generally work-conserving, i.e., they schedule a request as soon as the previous request has finished. Such schedulers often requ...
Sitaram Iyer, Peter Druschel