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ICDE
1999
IEEE
126views Database» more  ICDE 1999»
16 years 8 months ago
Improving the Access Time Performance of Serpentine Tape Drives
This paper presents a general model for estimating access times of serpentine tape drives. The model is used to schedule I/O requests in order to minimize the total access time. W...
Olav Sandstå, Roger Midtstraum
STOC
2009
ACM
172views Algorithms» more  STOC 2009»
16 years 7 months ago
Linear time approximation schemes for the Gale-Berlekamp game and related minimization problems
We design a linear time approximation scheme for the GaleBerlekamp Switching Game and generalize it to a wider class of dense fragile minimization problems including the Nearest C...
Marek Karpinski, Warren Schudy
AICCSA
2007
IEEE
79views Hardware» more  AICCSA 2007»
16 years 1 months ago
QoS Routing of VoIP using a Modified Widest-Shortest Routing Algorithm
Implementation of current real time services (of which one of the more important is Voice over IP) on the current Internet face many obstacles, among them the issue of routing. Qu...
Ala F. Khalifeh, Ali H. El-Mousa
IJCAI
2003
15 years 8 months ago
Contract Algorithms and Robots on Rays: Unifying Two Scheduling Problems
We study two apparently different, but formally similar, scheduling problems. The first problem involves contract algorithms, which can trade off run time for solution quality, a...
Daniel S. Bernstein, Lev Finkelstein, Shlomo Zilbe...
LICS
2010
IEEE
15 years 4 months ago
Fixed-Point Definability and Polynomial Time on Graphs with Excluded Minors
We prove that fixed-point logic with counting captures polynomial time on all classes of graphs with excluded minors. That is, for every class C of graphs such that some graph H is...
Martin Grohe