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Advances in wireless vehicular networks present us with opportunities for developing new distributed traffic control algorithms that avoid phenomena such as abrupt phase-transitions. Towards this end, we study the problem of distributed... more
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This paper describes a toolkit for synthesizing hybrid supervisory control systems starting from the popular Simulink/Stateflow modeling environment. The toolkit provides a systematic strategy for translating Simulink/Stateflow models to... more
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Cyber-physical systems bridge the gap between cyber components, typically written in software, and the physical world. Software written with traditional development practices, however, likely contains bugs or unintended interactions among... more
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Formal analysis of Simulink/Statefow (SLSF) diagrams requires association of semantics to these diagrams. In this thesis, we present a technique and the related tool called HyLink for translating a useful subclass of SLSF diagrams to... more
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      Hybrid SystemsMatlab
We propose a technique for generating alternative models for keywords in a hybrid hidden Markov model-artificial neural network (HMM-ANN) keyword spotting paradigm. Given a base pronunciation for a keyword from the lookup dictionary, our... more
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    •   3  
      hidden Markov modelDetection RateConfusion Matrix
The classic [MN55] confusion matrix experiment (16 consonants, white noise masker) was repeated by using computerized procedures, similar to those of Phatak and Allen (2007). [“Consonant and vowel confusions in speech-weighted noise,” J.... more
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      PhoneticsSpeech perceptionSpeech AcousticsMultidisciplinary
In this paper we describe a generic architecture for single channel speech enhancement. We assume processing in frequency domain and suppression based speech enhancement methods. The framework consists of a two stage voice activity... more
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    •   7  
      Mean square errorFrequency-domain analysisSpeech enhancementSignal to Noise Ratio
March 2007 soumisà publication Résumé. In this paper, we analyze the confusions patterns at three places in the hybrid phoneme recognition system. The confusions are analyzed at the pronunciation, the posterior probability, and the... more
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In this paper, we analyze the confusions patterns at three places in the hybrid phoneme recognition system. The confusions are analyzed at the pronunciation, the posterior probability, and the phoneme recognizer levels. The confusions... more
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In this paper, we analyze the confusions patterns at three places in the hybrid phoneme recognition system. The confusions are analyzed at the pronunciation, the posterior probability, and the phoneme recognizer levels. The confusions... more
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    • Computer Science
Confusion matrices have long been a part of psychoacoustic phoneme experimentation. Unfortu-nately truncation experimentation is rarely analyzed based on the confusion patterns. An example of confusion pattern analysis is seen in the 1955... more
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    • Psychology
Voice activity detectors (VAD) are integral part of the modern speech processing, speech enhancement and speech encoding systems. One of the major problems in practical realizations is to achieve robust VAD in conditions of background... more
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    •   7  
      Computer ScienceMultidisciplinarySpeech ProcessingSpeech enhancement
The sound source localizer is an important part of any microphone array processing block. Its major purpose is to determine the direction of arrival of the sound source and let a beamformer aim its beam towards this direction. In... more
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      EngineeringComputer ScienceIEEE
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    •   6  
      Software ImplementationEnergy efficientCoarse Grained SoilModulo Scheduling
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    • Plasma Medicine
A direct current, cold, atmospheric-pressure Ar/O 2 (2%) plasma microjet (PMJ) was used to disinfect root canals in single-rooted extracted human teeth. Results showed that 98.8% Enterococcus faecalis (E. faecalis) was inactivated in 8... more
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    • Plasma Medicine
The mechanisms of eukaryotic cell response to cold plasma are studied. A series of single gene mutants of eukaryotic model organism Saccharomyces cerevisiae are used to compare their sensitivity to plasma treatment with the wild type. We... more
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    • Plasma Medicine
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    • Plasma Medicine
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    • Plasma Medicine
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    • Plasma Medicine