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CHI
2010
ACM
14 years 4 days ago
Mobile taskflow in context: a screenshot study of smartphone usage
The impact of interruptions on workflow and productivity has been extensively studied in the PC domain, but while fragmented user attention is recognized as an inherent aspect of ...
Amy K. Karlson, Shamsi T. Iqbal, Brian Meyers, Gon...
TSP
2010
12 years 12 months ago
Shrinkage algorithms for MMSE covariance estimation
We address covariance estimation in the sense of minimum mean-squared error (MMSE) when the samples are Gaussian distributed. Specifically, we consider shrinkage methods which are ...
Yilun Chen, Ami Wiesel, Yonina C. Eldar, Alfred O....
QUESTA
2010
112views more  QUESTA 2010»
13 years 3 months ago
Admission control for a multi-server queue with abandonment
In a M/M/N+M queue, when there are many customers waiting, it may be preferable to reject a new arrival rather than risk that arrival later abandoning without receiving service. O...
Yasar Levent Koçaga, Amy R. Ward
IEEEARES
2010
IEEE
14 years 5 days ago
Strategies for Reducing Risks of Inconsistencies in Access Control Policies
—Managing access control policies is a complex task. We argue that much of the complexity is unnecessary and mostly due to historical reasons. There are number of legacy policy s...
Bernard Stepien, Stan Matwin, Amy P. Felty
SYSTOR
2010
ACM
13 years 10 months ago
On the DMA mapping problem in direct device assignment
I/O intensive workloads running in virtual machines can suffer massive performance degradation. Direct assignment of I/O devices to virtual machines is the best performing I/O vir...
Ben-Ami Yassour, Muli Ben-Yehuda, Orit Wasserman