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HCI
2009
15 years 4 months ago
A Study on the Compatibility of Ubiquitous Learning (u-Learning) Systems at University Level
: Graz University of Technology has a long tradition in the design, development and research of university wide Learning Management Systems (LMS). Inspired by the iPhone Style, the...
Martin Ebner, Christian Stickel, Nick Scerbakov, A...
HIPC
2009
Springer
15 years 4 months ago
Improved opportunistic scheduling algorithms for WiMAX Mobile Multihop Relay networks
We investigate the problem of scheduling in OFDMbased multihop relay networks with special emphasis on IEEE 802.16j based WiMAX networks. In such networks, scheduling is the probl...
Srinath Narasimha, Krishna M. Sivalingam
ICPP
2009
IEEE
15 years 4 months ago
Using Coherence Information and Decay Techniques to Optimize L2 Cache Leakage in CMPs
This paper evaluates several techniques to save leakage in CMP L2 caches by selectively switching off the less used lines. We primarily focus on private snoopy L2 caches. In this c...
Matteo Monchiero, Ramon Canal, Antonio Gonzá...
ALGORITHMICA
2011
15 years 1 months ago
Crossing Numbers of Graphs with Rotation Systems
We show that computing the crossing number and the odd crossing number of a graph with a given rotation system is NP-complete. As a consequence we can show that many of the well-k...
Michael J. Pelsmajer, Marcus Schaefer, Daniel Stef...
JACM
2011
98views more  JACM 2011»
15 years 1 months ago
Randomized algorithms for estimating the trace of an implicit symmetric positive semi-definite matrix
We analyze the convergence of randomized trace estimators. Starting at 1989, several algorithms have been proposed for estimating the trace of a matrix by 1 M M i=1 zT i Azi, where...
Haim Avron, Sivan Toledo