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CORR
1999
Springer
93views Education» more  CORR 1999»
13 years 8 months ago
On the Power of Positive Turing Reductions
: In the early 1980s, Selman's seminal work on positive Turing reductions showed that positive Turing reduction to NP yields no greater computational power than NP itself. Thu...
Edith Hemaspaandra
MOBISYS
2009
ACM
14 years 9 months ago
Attacks on public WLAN-based positioning systems
In this work, we study the security of public WLAN-based positioning systems. Specifically, we investigate the Skyhook positioning system, available on PCs and used on a number of...
Nils Ole Tippenhauer, Kasper Bonne Rasmussen, Chri...
PERCOM
2009
ACM
14 years 3 months ago
HIPS: A Calibration-less Hybrid Indoor Positioning System Using Heterogeneous Sensors
—Positioning is a crucial task in pervasive computing, aimed at estimating the user’s positions to provide location-based services. In this paper, we study an interesting probl...
Vincent Wenchen Zheng, Junhui Zhao, Yongcai Wang, ...
VR
2009
IEEE
130views Virtual Reality» more  VR 2009»
14 years 3 months ago
Spatialized Haptic Rendering: Providing Impact Position Information in 6DOF Haptic Simulations Using Vibrations
In this paper we introduce a “Spatialized Haptic Rendering” technique to enhance 6DOF haptic manipulation of virtual objects with impact position information using vibrations....
Jean Sreng, Anatole Lécuyer, Claude Andriot...
WIMOB
2008
IEEE
14 years 3 months ago
A Multi-Sensing-Range Method for Position Estimation of Passive RFID Tags
— Recently, the RFID tag system is paid attention to as an identification source. Each RFID tag is attached to some object. With the unique ID of RFID tag, a user identifies the ...
Toshihiro Hori, Tomotaka Wada, Yuuki Ota, Norie Uc...