A5062423099- Advanced Chemical Sensor Technologies
- Speech Recognition and Synthesis
- Speech and Audio Processing
- Heart Rate Variability and Autonomic Control
- Olfactory and Sensory Function Studies
- Phonetics and Phonology Research
- Insect Pheromone Research and Control
- Analytical Chemistry and Sensors
- Speech and dialogue systems
- Music and Audio Processing
- Neurobiology and Insect Physiology Research
- Non-Invasive Vital Sign Monitoring
- Hand Gesture Recognition Systems
- Diet and metabolism studies
- Behavioral Health and Interventions
- Emotion and Mood Recognition
- Diabetes Management and Research
- Nutritional Studies and Diet
- Analytical Chemistry and Chromatography
- Spectroscopy and Chemometric Analyses
- Mental Health Research Topics
- Hearing Impairment and Communication
- Language Development and Disorders
- Photonic and Optical Devices
- Face recognition and analysis
Texas A&M University
2016-2025
Mitchell Institute
2002-2020
College Station Medical Center
2020
Texas A&M University at Qatar
2012
Texas Medical Center
2006
Wright State University
1999-2003
North Carolina State University
1996-2002
Witnessing the swift advances in electronic means of seeing and hearing, scientists engineers scent a market for systems mimicking human nose. Already commercial from several companies are targeting applications, present potential, that range quality assurance food drugs to medical diagnosis, environmental monitoring, safety security military use. Here, authors outline major transducer technologies-in one sense, key component an
Chronic stress is endemic to modern society. However, as it unfeasible for physicians continuously monitor levels, its diagnosis nontrivial. Wireless body sensor networks offer opportunities ubiquitously detect and mental enabling improved diagnosis, early treatment. This article describes the development of a wearable platform number physiological correlates stress. We discuss tradeoffs in both system design selection balance information content wearability. Using experimental signals...
This article describes an approach to detecting mental stress using unobtrusive wearable sensors. The relies on estimating the state of autonomic nervous system from analysis heart rate variability. Namely, we use a non-linear identification technique known as principal dynamic modes (PDM) predict activation level two branches: sympathetic (i.e. stress-inducing) and parasympathetic relaxation-related). We validate method discrimination problem with psychophysiological conditions, one...
The performance of a pattern recognition system is dependent on, among other things, an appropriate data-preprocessing technique, In this paper, we describe method to evaluate the variety these techniques for problem odour classification using array gas sensors, also referred as electronic nose. Four experimental databases with different complexities are used score techniques. measure cross-validation estimate rate K nearest neighbor voting rule operating on Fisher's linear discriminant...
Abstract Mid-infrared (mid-IR) sensors consisting of silicon nitride (SiN) waveguides were designed and tested to detect volatile organic compounds (VOCs). SiN thin films, prepared by low-pressure chemical vapor deposition (LPCVD), have a broad mid-IR transparent region lower refractive index (n = 2.0) than conventional materials such as Si 3.4), which leads stronger evanescent wave therefore higher sensitivity, confirmed finite-difference eigenmode (FDE) calculation. Further, in-situ...
This work represents the first attempt to develop a sensory system, specifically designed for characterization of wines, which combines three modalities: an array gas sensors, electrochemical liquid and optical system measure color by means CIElab coordinates. new analytical tool, that has been called "electronic panel," includes not only but also hardware (injection electronics) software necessary fusing information from modules. Each modalities (volatiles, liquids, color) designed, tested,...
Purpose: To assist in remote treatment, speech-language pathologists (SLPs) rely on mobile games, which though entertaining, lack feedback mechanisms. Games integrated with automatic speech recognition (ASR) offer a solution where productions control gameplay. We therefore performed feasibility study to assess children's and SLPs' experiences towards speech-controlled game feature preferences ASR accuracy. Method: Ten children childhood apraxia of (CAS), six typically developing (TD) seven...
This work presents an integral system capable of generating animations with realistic dynamics, including the individualized nuances, three-dimensional (3-D) human faces driven by speech acoustics. The is capturing short phenomena in orofacial dynamics a given speaker tracking 3-D location various MPEG-4 facial points through stereovision. A perceptual transformation spectral envelope and prosodic cues are combined into acoustic feature vector to predict means nearest-neighbor algorithm....
This paper addresses a major weakness of traditional heart-rate-variability (HRV) analysis for the purpose monitoring stress: sensitivity to respiratory influences. To address this issue, linear system-identification model cardiorespiratory system using commercial heart rate monitors and sensors was constructed. Subtraction driven fluctuations in leads residual signal where effects mental stress become more salient. We experimentally validated effectiveness method on binary discrimination...
We present an adaptive biofeedback game for teaching self-regulation of stress. Our approach consists monitoring the user's physiology during gameplay and adapting using a positive feedback loop that rewards relaxing behaviors penalizes states high arousal. evaluate casual under three modalities: electrodermal activity, heart rate variability, breathing rate. The biosignals can be measured noninvasively with wearable sensors, represent different degrees voluntary control selectivity toward...
This paper presents Apraxia World, a remote therapy tool for speech sound disorders that integrates exercises into an engaging platformer-style game. In the player controls avatar with virtual buttons/joystick, whereas input is associated assets needed to advance from one level next. We tested performance and child preference of two strategies delivering exercises: during each level, after it. Most children indicated doing completing was less disruptive preferable scattered through level....