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INFOCOM
2009
IEEE
16 years 1 months ago
Detecting Spam Zombies by Monitoring Outgoing Messages
—Compromised machines are one of the key security threats on the Internet; they are often used to launch various security attacks such as DDoS, spamming, and identity theft. In t...
Zhenhai Duan, Peng Chen, Fernando Sanchez, Yingfei...
SIGIR
2005
ACM
16 years 7 days ago
A probabilistic model for retrospective news event detection
Retrospective news event detection (RED) is defined as the discovery of previously unidentified events in historical news corpus. Although both the contents and time information...
Zhiwei Li, Bin Wang, Mingjing Li, Wei-Ying Ma
ISBI
2002
IEEE
16 years 7 months ago
Optimal nonlinear estimation of photon coordinates in PET
We consider detection of high-energy photons in PET using thick scintillation crystals. Parallax effect and multiple Compton interactions in this type of crystals significantly re...
Alexander M. Bronstein, Michael M. Bronstein, Mich...
ICC
2007
IEEE
136views Communications» more  ICC 2007»
16 years 1 months ago
Sphere Decoder for a MIMO Multi-User MC-CDMA Uplink in Time-Varying Channels
— We focus on iterative detection for the uplink of a multi-carrier (MC) code division multiple access (CDMA) system based on orthogonal frequency division multiplexing (OFDM). T...
Charlotte Dumard, Thomas Zemen
ISCAS
2003
IEEE
102views Hardware» more  ISCAS 2003»
15 years 12 months ago
Analog wavelet transform employing dynamic translinear circuits for cardiac signal characterization
An analog QRS complex detection circuit, for pacemaker applications, based on the Wavelet Transform (WT) is presented. The system detects the wavelet modulus maxima of the QRS com...
Sandro A. P. Haddad, Richard Houben, Wouter A. Ser...