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VLDB
1990
ACM
106views Database» more  VLDB 1990»
15 years 5 months ago
The Time Index: An Access Structure for Temporal Data
In this paper, we describe a new indexing technique, the time indez, for improving the performance of certain classes of temporal queries. The time index can be used to retrieve v...
Ramez Elmasri, Gene T. J. Wuu, Yeong-Joon Kim
VTC
2007
IEEE
164views Communications» more  VTC 2007»
15 years 7 months ago
Joint Distributed Clustering and Ranging for Wireless Ad-Hoc Sensor Networks
— This paper discusses a joint decentralized clustering and ranging algorithm for wireless ad-hoc sensor networks. Each sensor uses a random waiting timer and local criteria to d...
Chih-Yu Wen, Jun-Koh Chen, William A. Sethares
IROS
2006
IEEE
120views Robotics» more  IROS 2006»
15 years 7 months ago
Optimal local map size for EKF-based SLAM
Abstract— In this paper we show how to optimize the computational cost and maximize consistency in EKF-based SLAM for large environments. We combine Local Mapping with Map Joinin...
Lina María Paz, José Neira
LCN
2006
IEEE
15 years 7 months ago
Efficient Algorithms for Secure Multicast key Management
Group Multicast is becoming a prevalent issue in Network applications such as teleconferencing, payper-view, and information services. In order to secure group communications by p...
Elham Khabiri, Saïd Bettayeb
VTC
2006
IEEE
107views Communications» more  VTC 2006»
15 years 7 months ago
Multi-Ring Cyclic Scheduling for Spatial-TDMA Energy-Saving MAC Protocol in MANET
—this paper presents an energy-saving Multi-Ring Cyclic Scheduling for Spatial-TDMA (MRSTDMA). We design a cyclic scheduling of STDMA to realize the energy-saving property of STD...
Wei-Chih Harry Lin, Shuoh-Ren Tsai