Sciweavers

2100 search results - page 388 / 420
» Fundamentals of the problem
Sort
View
FSTTCS
2009
Springer
14 years 3 months ago
Covering of ordinals
The paper focuses on the structure of fundamental sequences of ordinals smaller than ε0. A first result is the construction of a monadic second-order formula identifying a given ...
Laurent Braud
ICCCN
2007
IEEE
14 years 3 months ago
Node-Replacement Policies to Maintain Threshold-Coverage in Wireless Sensor Networks
Abstract— With the rapid deployment of wireless sensor networks, there are several new sensing applications with specific requirements. Specifically, target tracking applicatio...
Sachin Parikh, Vinod Vokkarane, Liudong Xing, Daya...
IDEAS
2007
IEEE
135views Database» more  IDEAS 2007»
14 years 3 months ago
Bitmap Index Design Choices and Their Performance Implications
Historically, bitmap indexing has provided an important database capability to accelerate queries. However, only a few database systems have implemented these indexes because of t...
Elizabeth J. O'Neil, Patrick E. O'Neil, Kesheng Wu
INFOCOM
2007
IEEE
14 years 3 months ago
Separability and Topology Control of Quasi Unit Disk Graphs
— A deep understanding of the structural properties of wireless networks is critical for evaluating the performance of network protocols and improving their designs. Many protoco...
Jianer Chen, Anxiao Jiang, Iyad A. Kanj, Ge Xia, F...
INFOCOM
2007
IEEE
14 years 3 months ago
QoS-Driven Power Allocation Over Parallel Fading Channels With Imperfect Channel Estimations in Wireless Networks
— We propose the quality-of-service (QoS) driven power allocation schemes for parallel fading channels when considering imperfect channel estimations. In particular, the parallel...
Jia Tang, Xi Zhang