Asok Ray

    • 6887 Citations
    • 36 h-Index
    1976 …2019
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    Research Output 1976 2019

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    2012
    6 Citations (Scopus)

    Fractal analysis of crack initiation in polycrystalline alloys using surface interferometry

    Jha, D. K., Singh, D. S., Gupta, S. & Ray, A., May 1 2012, In : EPL. 98, 4, 44006.

    Research output: Contribution to journalArticle

    crack initiation
    fractals
    interferometry
    damage
    surface cracks
    3 Citations (Scopus)

    Online recursive estimation of remaining life using ultrasonic measurements

    Singh, D. S., Gupta, S. & Ray, A., Jul 1 2012, In : Structural Health Monitoring. 11, 4, p. 413-421 9 p.

    Research output: Contribution to journalArticle

    Ultrasonic measurement
    Ultrasonics
    Fatigue
    Ultrasonic sensors
    Stochastic models
    16 Citations (Scopus)

    Optimization of symbolic feature extraction for pattern classification

    Sarkar, S., Mukherjee, K., Jin, X., Singh, D. S. & Ray, A., Mar 1 2012, In : Signal Processing. 92, 3, p. 625-635 11 p.

    Research output: Contribution to journalArticle

    Pattern recognition
    Feature extraction
    Time series
    Fatigue damage
    Identification (control systems)
    8 Citations (Scopus)

    Statistical mechanics-inspired modeling of heterogeneous packet transmission in communication networks

    Sarkar, S., Mukherjee, K., Ray, A., Srivastav, A. & Wettergren, T. A., Mar 12 2012, In : IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics. 42, 4, p. 1083-1094 12 p., 6166902.

    Research output: Contribution to journalArticle

    Statistical mechanics
    Telecommunication networks
    Phase diagrams
    Phase transitions
    Thermodynamics
    18 Citations (Scopus)

    Symbolic dynamic filtering and language measure for behavior identification of mobile robots

    Mallapragada, G., Ray, A. & Jin, X., Jan 1 2012, In : IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics. 42, 3, p. 647-659 13 p., 6069609.

    Research output: Contribution to journalArticle

    Risk analysis
    Principal component analysis
    Mobile robots
    Pattern recognition
    Feature extraction
    8 Citations (Scopus)

    Symbolic identification for fault detection in aircraft gas turbine engines

    Chakraborty, S., Sarkar, S. & Ray, A., Apr 1 2012, In : Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering. 226, 4, p. 422-436 15 p.

    Research output: Contribution to journalArticle

    Fault detection
    Gas turbines
    Turbines
    Aircraft
    Aircraft engines
    67 Citations (Scopus)

    Target detection and classification using seismic and PIR sensors

    Jin, X., Sarkar, S., Ray, A., Gupta, S. & Damarla, T., May 8 2012, In : IEEE Sensors Journal. 12, 6, p. 1709-1718 10 p., 6086704.

    Research output: Contribution to journalArticle

    Target tracking
    sensors
    Sensors
    false alarms
    payloads
    4 Citations (Scopus)

    Vector space formulation of probabilistic finite state automata

    Wen, Y. & Ray, A., Jul 1 2012, In : Journal of Computer and System Sciences. 78, 4, p. 1127-1141 15 p.

    Research output: Contribution to journalArticle

    Finite State Automata
    Finite automata
    Vector spaces
    Vector space
    Formulation
    2011
    21 Citations (Scopus)

    Anomaly detection in nuclear power plants via symbolic dynamic filtering

    Jin, X., Guo, Y., Sarkar, S., Ray, A. & Edwards, R. M., Feb 1 2011, In : IEEE Transactions on Nuclear Science. 58, 1 PART 2, p. 277-288 12 p., 5654618.

    Research output: Contribution to journalArticle

    nuclear power plants
    Nuclear power plants
    anomalies
    sensors
    Sensors
    45 Citations (Scopus)

    Data-driven fault detection in aircraft engines with noisy sensor measurements

    Sarkar, S., Jin, X. & Ray, A., Apr 21 2011, In : Journal of Engineering for Gas Turbines and Power. 133, 8, 081602.

    Research output: Contribution to journalArticle

    Aircraft engines
    Fault detection
    Sensors
    Propulsion
    Pattern recognition
    8 Citations (Scopus)

    Distributed network control for mobile multi-modal wireless sensor networks

    Bein, D., Wen, Y., Phoha, S., Madan, B. B. & Ray, A., Mar 1 2011, In : Journal of Parallel and Distributed Computing. 71, 3, p. 460-470 11 p.

    Research output: Contribution to journalArticle

    Distributed Networks
    Sensor networks
    Wireless Sensor Networks
    Wireless sensor networks
    Data Quality
    34 Citations (Scopus)

    On the discriminability of keystroke feature vectors used in fixed text keystroke authentication

    Balagani, K. S., Phoha, V. V., Ray, A. & Phoha, S., May 1 2011, In : Pattern Recognition Letters. 32, 7, p. 1070-1080 11 p.

    Research output: Contribution to journalArticle

    Authentication
    Feature extraction
    Agglomeration
    Experiments
    6 Citations (Scopus)

    Real-time adaptation of decision thresholds in sensor networks for detection of moving targets

    Mukherjee, K., Ray, A., Wettergren, T., Gupta, S. & Phoha, S., Jan 1 2011, In : Automatica. 47, 1, p. 185-191 7 p.

    Research output: Contribution to journalArticle

    Sensor networks
    Time series
    Decision making
    Formal languages
    Sensors
    22 Citations (Scopus)

    Statistical-mechanics-inspired optimization of sensor field configuration for detection of mobile targets

    Mukherjee, K., Gupta, S., Ray, A. & Wettergren, T. A., Jun 1 2011, In : IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics. 41, 3, p. 783-791 9 p., 5669356.

    Research output: Contribution to journalArticle

    Statistical mechanics
    Mechanics
    Sensors
    Temperature
    Sensor networks
    22 Citations (Scopus)

    Symbolic analysis of sonar data for underwater target detection

    Mukherjee, K., Gupta, S., Ray, A. & Phoha, S., Apr 1 2011, In : IEEE Journal of Oceanic Engineering. 36, 2, p. 219-230 12 p., 5766777.

    Research output: Contribution to journalArticle

    Sonar
    Target tracking
    Automata theory
    Autonomous underwater vehicles
    Military operations
    44 Citations (Scopus)

    Wavelet-based feature extraction using probabilistic finite state automata for pattern classification

    Jin, X., Gupta, S., Mukherjee, K. & Ray, A., Jul 1 2011, In : Pattern Recognition. 44, 7, p. 1343-1356 14 p.

    Research output: Contribution to journalArticle

    Finite automata
    Pattern recognition
    Feature extraction
    Time series
    Structural health monitoring
    2010
    8 Citations (Scopus)

    Analytic signal space partitioning and symbolic dynamic filtering for degradation monitoring of electric motors

    Chakraborty, S., Ray, A., Subbu, A. & Keller, E., Nov 1 2010, In : Signal, Image and Video Processing. 4, 4, p. 399-403 5 p.

    Research output: Contribution to journalArticle

    Electric motors
    Synchronous motors
    Permanent magnets
    Degradation
    Monitoring
    4 Citations (Scopus)

    A stopping rule for symbolic dynamic filtering

    Wen, Y. & Ray, A., Sep 1 2010, In : Applied Mathematics Letters. 23, 9, p. 1125-1128 4 p.

    Research output: Contribution to journalArticle

    Finite State Automata
    Stopping Rule
    Symbolic Dynamics
    Confidence Level
    Finite automata
    1 Citation (Scopus)

    Feature extraction for data-driven fault detection in nuclear power plants

    Jin, X., Edwards, R. M. & Ray, A., 2010, In : Transactions of the American Nuclear Society. 102, p. 163-164 2 p.

    Research output: Contribution to journalArticle

    Fault detection
    Nuclear power plants
    Feature extraction
    14 Citations (Scopus)

    Integrated robust and resilient control of nuclear power plants for operational safety and high performance

    Jin, X., Ray, A. & Edwards, R. M., Apr 1 2010, In : IEEE Transactions on Nuclear Science. 57, 2 PART 2, p. 807-817 11 p., 5446479.

    Research output: Contribution to journalArticle

    nuclear power plants
    Nuclear power plants
    safety
    Robust control
    emergencies
    1 Citation (Scopus)
    Formal languages
    State feedback
    1 Citation (Scopus)

    Self-organization of sensor networks for detection of pervasive faults

    Srivastav, A. & Ray, A., Feb 1 2010, In : Signal, Image and Video Processing. 4, 1, p. 99-104 6 p.

    Research output: Contribution to journalArticle

    Sensor networks
    Computer viruses
    Computer networks
    Large scale systems
    Dynamical systems
    8 Citations (Scopus)

    Symbolic dynamic analysis of surface deformation during fatigue crack initiation

    Singh, D. S., Gupta, S. & Ray, A., Jan 1 2010, In : Measurement Science and Technology. 21, 4, 043003.

    Research output: Contribution to journalArticle

    Symbolic Analysis
    Fatigue Crack
    Crack Initiation
    Symbolic Dynamics
    crack initiation
    4 Citations (Scopus)

    Symbolic dynamic filtering for image analysis: Theory and experimental validation

    Subbu, A., Srivastav, A., Ray, A. & Keller, E., Jan 1 2010, In : Signal, Image and Video Processing. 4, 3, p. 319-329 11 p.

    Research output: Contribution to journalArticle

    Image analysis
    Time series
    Pixels
    Ultrasonic sensors
    Fatigue damage
    2009
    7 Citations (Scopus)
    Statistical mechanics
    Sensor nodes
    Sensor networks
    Scheduling
    Sensors
    8 Citations (Scopus)

    An information-theoretic measure for anomaly detection in complex dynamical systems

    Srivastav, A., Ray, A. & Gupta, S., Feb 1 2009, In : Mechanical Systems and Signal Processing. 23, 2, p. 358-371 14 p.

    Research output: Contribution to journalArticle

    Dynamical systems
    Information analysis
    Statistical mechanics
    Information theory
    Time series

    An integrated scheme for anomaly identification and automatic control of nuclear power plants

    Jin, X., Edwards, R. M. & Ray, A., 2009, In : Transactions of the American Nuclear Society. 101, p. 315-316 2 p.

    Research output: Contribution to journalArticle

    Nuclear power plants
    5 Citations (Scopus)

    Asynchronous data-driven classification of weapon systems

    Jin, X., Mukherjee, K., Gupta, S., Ray, A., Phoha, S. & Damarla, T., Dec 22 2009, In : Measurement Science and Technology. 20, 12, 123001.

    Research output: Contribution to journalArticle

    weapon systems
    Pattern Classification
    Classification Algorithm
    Data-driven
    weapons
    3 Citations (Scopus)

    Autonomous robot navigation using optimal control of probabilistic regular languages

    Mallapragada, G., Chattopadhyay, I. & Ray, A., Jan 1 2009, In : International Journal of Control. 82, 1, p. 13-26 14 p.

    Research output: Contribution to journalArticle

    Formal languages
    Navigation
    Robots
    Robotics
    Finite automata
    16 Citations (Scopus)

    Early detection of stator voltage imbalance in three-phase induction motors

    Samsi, R., Ray, A. & Mayer, J., Jan 1 2009, In : Electric Power Systems Research. 79, 1, p. 239-245 7 p.

    Research output: Contribution to journalArticle

    Electric motors
    Induction motors
    Stators
    Health
    Time series analysis
    20 Citations (Scopus)

    Generalization of Hilbert transform for symbolic analysis of noisy signals

    Sarkar, S., Mukherjee, K. & Ray, A., Jun 1 2009, In : Signal Processing. 89, 6, p. 1245-1251 7 p.

    Research output: Contribution to journalArticle

    Time series
    Pattern recognition
    Dynamical systems
    Information theory
    Noise abatement
    16 Citations (Scopus)

    Generalized Ising model for dynamic adaptation in autonomous systems

    Gupta, S., Ray, A. & Phoha, S., Aug 25 2009, In : EPL. 87, 1, 10009.

    Research output: Contribution to journalArticle

    Ising model
    autonomy
    potential fields
    configurations
    statistical mechanics
    3 Citations (Scopus)
    Fatigue damage
    Ultrasonics
    Monitoring
    Fatigue of materials
    Ultrasonic sensors

    Objective classification of two-phase flow regimes via ultrasonic signals

    Talley, J. D., Chakraborty, S., Keller, E., Ray, A. & Kim, S., 2009, In : Transactions of the American Nuclear Society. 100, p. 734-735 2 p.

    Research output: Contribution to journalArticle

    Two phase flow
    Ultrasonics
    8 Citations (Scopus)

    Statistical estimation of multiple faults in aircraft gas turbine engines

    Sarkar, S., Rao, C. & Ray, A., Jun 1 2009, In : Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering. 223, 4, p. 415-424 10 p.

    Research output: Contribution to journalArticle

    Gas turbines
    Turbines
    Aircraft
    Aircraft engines
    Information fusion
    4 Citations (Scopus)

    Statistical estimation of multiple parameters via symbolic dynamic filtering

    Rao, C., Mukherjee, K., Sarkar, S. & Ray, A., Jun 1 2009, In : Signal Processing. 89, 6, p. 981-988 8 p.

    Research output: Contribution to journalArticle

    Nonlinear dynamical systems
    Finite automata
    Sensor networks
    Dynamical systems
    Data storage equipment
    27 Citations (Scopus)

    Statistical mechanics of complex systems for pattern identification

    Gupta, S. & Ray, A., Jan 1 2009, In : Journal of Statistical Physics. 134, 2, p. 337-364 28 p.

    Research output: Contribution to journalArticle

    complex systems
    statistical mechanics
    Statistical Mechanics
    Complex Systems
    Thermodynamic Formalism
    22 Citations (Scopus)

    Supervised self-organization of homogeneous swarms using ergodic projections of markov chains

    Chattopadhyay, I. & Ray, A., Oct 8 2009, In : IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics. 39, 6, p. 1505-1515 11 p.

    Research output: Contribution to journalArticle

    Markov Chains
    Markov processes
    Population Density
    Specifications
    9 Citations (Scopus)

    V*: A robot path planning algorithm based on renormalised measure of probabilistic regular languages

    Chattopadhyay, I., Mallapragada, G. & Ray, A., May 1 2009, In : International Journal of Control. 82, 5, p. 849-867 19 p.

    Research output: Contribution to journalArticle

    Formal languages
    Motion planning
    Robots
    Finite automata
    Navigation
    18 Citations (Scopus)

    Void fraction measurement in two-phase flow processes via symbolic dynamic filtering of ultrasonic signals

    Chakraborty, S., Keller, E., Talley, J., Srivastav, A., Ray, A. & Kim, S., Jan 1 2009, In : Measurement Science and Technology. 20, 2, 023001.

    Research output: Contribution to journalArticle

    Bubbly Flow
    Void Fraction
    Symbolic Dynamics
    Void fraction
    two phase flow
    2008
    13 Citations (Scopus)

    A carbon monoxide sensor in polymer electrolyte fuel cells based on symbolic dynamic filtering

    Bhambare, K. S., Gupta, S., Mench, M. M. & Ray, A., Sep 25 2008, In : Sensors and Actuators, B: Chemical. 134, 2, p. 803-815 13 p.

    Research output: Contribution to journalArticle

    Carbon Monoxide
    Carbon monoxide
    carbon monoxide
    Electrolytes
    fuel cells
    7 Citations (Scopus)
    Propulsion
    Control systems
    Aircraft propulsion
    Aircraft
    Engines
    11 Citations (Scopus)

    Anomaly detection in flexible mechanical couplings via symbolic time series analysis

    Khatkhate, A., Gupta, S., Ray, A. & Patankar, R., Apr 8 2008, In : Journal of Sound and Vibration. 311, 3-5, p. 608-622 15 p.

    Research output: Contribution to journalArticle

    Bearings (structural)
    time series analysis
    Time series analysis
    Automata theory
    Machine vibrations
    9 Citations (Scopus)

    Automated behaviour recognition in mobile robots using symbolic dynamic filtering

    Mallapragada, G., Chattopadhyay, I. & Ray, A., Oct 6 2008, In : Proceedings of the Institution of Mechanical Engineers. Part I: Journal of Systems and Control Engineering. 222, 6, p. 409-424 16 p.

    Research output: Contribution to journalArticle

    Mobile robots
    Robots
    Dynamical systems
    Robotics
    11 Citations (Scopus)

    Damage monitoring of refractory wall in a generic entrained-bed slagging gasification system

    Chakraborty, S., Sarkar, S., Gupta, S. & Ray, A., Dec 1 2008, In : Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy. 222, 8, p. 791-807 17 p.

    Research output: Contribution to journalArticle

    Gasification
    Refractory materials
    Monitoring
    Degradation
    Dynamic response
    13 Citations (Scopus)

    Data-driven fault detection and estimation in thermal pulse combustors

    Chakraborty, S., Gupta, S., Ray, A. & Mukhopadhyay, A., Dec 15 2008, In : Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering. 222, 8, p. 1097-1108 12 p.

    Research output: Contribution to journalArticle

    Combustors
    Fault detection
    Parameter estimation
    Information theory
    Pattern recognition
    18 Citations (Scopus)

    Estimation of slowly varying parameters in nonlinear systems via symbolic dynamic filtering

    Rajagopalan, V., Chakraborty, S. & Ray, A., Feb 1 2008, In : Signal Processing. 88, 2, p. 339-348 10 p.

    Research output: Contribution to journalArticle

    Finite automata
    Nonlinear systems
    Time series
    Nonlinear dynamical systems
    Parameter estimation
    5 Citations (Scopus)

    Failure precursor detection in complex electrical systems using symbolic dynamics

    Patankar, R. P., Rajagopalan, V. & Ray, A., Jan 1 2008, In : International Journal of Signal and Imaging Systems Engineering. 1, 1, p. 68-77 10 p.

    Research output: Contribution to journalArticle

    Principal component analysis
    Pattern recognition
    Signal processing
    Neural networks
    Degradation
    40 Citations (Scopus)

    Fault detection and isolation in aircraft gas turbine engines. Part 1: Underlying concept

    Gupta, S., Ray, A., Sarkar, S. & Yasar, M., Jun 30 2008, In : Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering. 222, 3, p. 307-318 12 p.

    Research output: Contribution to journalArticle

    Fault detection
    Gas turbines
    Turbines
    Aircraft
    Aircraft engines
    25 Citations (Scopus)

    Fault detection and isolation in aircraft gas turbine engines. Part 2: Validation on a simulation test bed

    Sarkar, S., Yasar, M., Gupta, S., Ray, A. & Mukherjee, K., Jun 30 2008, In : Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering. 222, 3, p. 319-330 12 p.

    Research output: Contribution to journalArticle

    Fault detection
    Gas turbines
    Turbines
    Aircraft
    Engines