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ICASSP
2009
IEEE
15 years 10 months ago
Design of robust superdirective beamformers as a convex optimization problem
Broadband data-independent beamforming designs aiming at constant beamwidth often lead to superdirective beamformers for low frequencies, if the sensor spacing is small relative t...
Edwin Mabande, Adrian Schad, Walter Kellermann
APNOMS
2006
Springer
15 years 10 months ago
Performance Analysis of Service Differentiation for IEEE 802.15.4 Slotted CSMA/CA
In this paper, we propose two mechanisms, differentiation by backoff exponent and differentiation by the size of contention window, for IEEE 802.15.4 sensor networks to provide mul...
Meejoung Kim
196
Voted
CVPR
2006
IEEE
15 years 10 months ago
Single-Image Vignetting Correction
In this paper, we propose a method for determining the vignetting function given only a single image. Our method is designed to handle both textured and untextured regions in orde...
Yuanjie Zheng, Stephen Lin, Sing Bing Kang
FSTTCS
2006
Springer
15 years 10 months ago
Approximation Algorithms for 2-Stage Stochastic Optimization Problems
Abstract. Stochastic optimization is a leading approach to model optimization problems in which there is uncertainty in the input data, whether from measurement noise or an inabili...
Chaitanya Swamy, David B. Shmoys
EDBT
2000
ACM
15 years 10 months ago
Management and Query Processing of One-Dimensional Intervals with the UB-Tree
The management and query processing of one dimensional intervals is a special case of extended object handling. One dimensional intervals play an important role in temporal databa...
Robert Fenk