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CCS
2007
ACM
16 years 26 days ago
A simple and expressive semantic framework for policy composition in access control
In defining large, complex access control policies, one would like to compose sub-policies, perhaps authored by different organizations, into a single global policy. Existing po...
Glenn Bruns, Daniel S. Dantas, Michael Huth
HAPTICS
2006
IEEE
16 years 22 days ago
Haptic Manipulation of Microspheres Using Optical Tweezers
Using optical tweezers (OT) and a haptic device, microspheres having diameters ranging from 3 to 4 ␮m (floating in a fluid solution) are manipulated in order to form patterns ...
Ibrahim Bukusoglu, Cagatay Basdogan, Alper Kiraz, ...
CF
2006
ACM
16 years 20 days ago
Kilo-instruction processors, runahead and prefetching
There is a continuous research effort devoted to overcome the memory wall problem. Prefetching is one of the most frequently used techniques. A prefetch mechanism anticipates the ...
Tanausú Ramírez, Alex Pajuelo, Olive...
SENSYS
2006
ACM
16 years 19 days ago
Funneling-MAC: a localized, sink-oriented MAC for boosting fidelity in sensor networks
Sensor networks exhibit a unique funneling effect which is a product of the distinctive many-to-one, hop-by-hop traffic pattern found in sensor networks, and results in a signific...
Gahng-Seop Ahn, Se Gi Hong, Emiliano Miluzzo, Andr...
JCDL
2005
ACM
100views Education» more  JCDL 2005»
16 years 8 days ago
What's there and what's not?: focused crawling for missing documents in digital libraries
Some large scale topical digital libraries, such as CiteSeer, harvest online academic documents by crawling open-access archives, university and author homepages, and authors’ s...
Ziming Zhuang, Rohit Wagle, C. Lee Giles