Curriculum Vitae
PATRICK J. LOUGHLIN
749 Benedum Hall
University of Pittsburgh
Pittsburgh, PA 15261
 Tel. (412) 624-9685
Email: loughlin@pitt.edu

 

TITLE: William Kepler Whiteford Professor of Bioengineering, and Electrical & Computer Engineering

INTERESTS: Nonstationary signal processing and time-varying systems analysis and modeling. Current research activities include applications in acoustics and bio-signal processing, particularly underwater sound propagation and classification, and human postural control.

EDUCATION
Ph. D., 1992, Electrical Engineering, University of Washington, Seattle, WA
M.S., 1988, Bioengineering, University of Utah, Salt Lake City, UT
B.S. (Summa Cum Laude), 1985, Biomedical Engineering, Boston University, Boston, MA

PROFESSIONAL EXPERIENCE
1993-date:  Faculty, University of Pittsburgh

Dept. of Bioengineering

                      2001- date: Professor (primary appointment since 2008)

                      1998-2001: Associate Professor (secondary appointment)

Dept. of Electrical and Computer Engineering

                      2001- date: Professor (secondary appointment since 2008)

                      1998-2001: Associate Professor

                      1993-1998: Assistant Professor

1989-1992: Research Assistant, University of Washington (Seattle), Dept. of Electrical Engineering
1986-1988: Research Assistant, University of Utah, Dept. of Bioengineering

Visiting Appointments
2001-2002: Visiting Scholar, Applied Physics Laboratory, University of Washington (sabbatical)
Summer 2000: Visiting Scholar, Applied Physics Laboratory, University of Washington
Summer 1996: US Navy/ASEE Faculty Fellow, Naval Surface Warfare Center, Bremerton, WA

PROFESSIONAL HONORS
NSF Faculty Early Career Development (CAREER) Award, 1996
ONR Young Investigator Award, 1998
U.S. Navy-ASEE Summer Faculty Fellow, NSWC, 1996
Invited participant, NAE 5th Annual Symposium on Frontiers of Engineering, 1999
Fulton C. Noss Faculty Fellow, School of Engineering, 1996-2002
Board of Visitors Faculty Award, School of Engineering, 1998
Chancellor's Distinguished Research Award, University of Pittsburgh, 1999
William Kepler Whiteford Professor, School of Engineering, 2002-2010

Fellow of the American Institute for Medical and Biological Engineering (AIMBE), the Acoustical Society of America (ASA), and the Institute of Electrical and Electronics Engineers (IEEE)

PUBLICATIONS: Authored/co-authored over 60 journal papers. Complete bibliography begins on p. 5.

GRANTS

External

¥        Office of Naval Research: $329,634, 10/09-9/12. Role: PI
"Nonstationary Signal Processing Methods for Channel Characterization and Sonar Signal Classification in Varying and Uncertain Environments.Ó

¥        Office of Naval Research: $11,238, 3/10-9/12. Role: PI
"Graduate Student Applied Summer Research Experience.Ó

¥        Office of Naval Research: $300,305, 1/09-12/11. Role: PI
"Sonar Signal Analysis and Waveform Design for Enhanced Target Detection and Classification.Ó

¥        National Institutes of Health (NIA): ARRA R01 award AG029546-03S1, $61,500 (direct costs), 9/09-9/10. Role: PI (Co-I's: J.R. Jennings, J. Furman, M. Redfern and P. Sparto).  "Modelling Sensory Integration and Attention in Postural Control of Older Adults (Competitive Revision)."

¥        National Institutes of Health (NIA): R01 award AG029546, $716,963 ($164K annual direct costs), 7/07-6/10. Role: PI (Co-I's: J.R. Jennings, J. Furman, M. Redfern and P. Sparto).  "Modelling Sensory Integration and Attention in Postural Control of Older Adults."

¥        Office of Naval Research: $409,992, 10/05-9/09. Role: PI
"Nonstationary Signal Processing Methods for Channel Characterization and Signal Classification.Ó

¥        National Institutes of Health (NIA): R01 award, $1.25M ($175K annual direct costs), 6/03-5/08.

Role: Co-I (10% effort).  PI: M. Redfern, ÒPostural Control in The Elderly: The Role of Attention.Ó

¥        Office of Naval Research: $50,000, 12/06-12/07. Role: PI
 ``Time-Frequency Analysis and Feature Extraction for Broadband Mine ClassificationÕÕ

¥        Office of Naval Research: $338,565, 10/01-9/05. Role: PI
"Methods for Nonstationary Signal Analysis and Classification."

¥        Office of Naval Research: $5,495, 5/05-9/05. Role: PI
"Methods for Nonstationary Signal Analysis and Classification: Graduate Student Summer Research Experience at APL-UW."

¥        Office of Naval Research: $4,470, 5/04-9/04. Role: PI
"Methods for Nonstationary Signal Analysis and Classification: Graduate Student Summer Research Experience at APL-UW."

¥        National Institutes of Health (NIDCD): R01 award DC04435, $448,344, 4/00-3/04. Role: PI

(Co-I's: J. Furman and M. Redfern).  "Time-Varying Characteristics of Human Postural Sway."

¥        Office of Naval Research, Young Investigator Award: $300,000, 6/98-9/01. Role: PI
"New Techniques for Analysis and Characterization of Acoustic Waves."

¥        National Science Foundation, CAREER Award: $205,000, 9/96-8/00. Role: PI
"Joint Density-Based Methods of Applied Nonstationary Signal Processing."

¥        Whitaker Foundation: $69,928, 11/99-10/00. Role: PI (Co-I's: J. Furman and M. Redfern)
"Time-Varying Properties of Human Postural Control."

¥        Whitaker Foundation: $207,036, 4/96-3/99. Role: PI (Co-I's: J. Furman and M. Redfern)
"Time-Varying Properties of Human Postural Control."

¥        Office of Naval Research: $127,293, 5/96-9/98. Role: PI
"Positive Time-Frequency Distributions: Development and Applications."

¥        Boeing Commercial Airplane: $84,978, 11/95-12/96. Role: PI
"Monitoring Manufacturing Processes via Positive Time-Frequency Distributions."

¥        NATO Collaborative Research Grants Programme: $6,883, 7/96-6/98. Role: PI
(Co-PI: J. Fonollosa, Barcelona, Spain)
"Moments and Generalized Marginals of Time-Frequency Distributions."

¥        Alcoa Foundation: $7,500, 5/94-6/96. Role: PI

Internal

¥        ÒStructural MRI and Postural Control Modelling,Ó Pittsburgh Claude D. Pepper Older Americans Independence Center (University center funded by NIH/NIA), $15,000, 6/1/08-5/31/09. Role: PI (co-IÕs: H. Aizenstein)

¥        ÒModeling Sensory Integration and Attention in Balance of Elderly Subjects,Ó Pittsburgh Claude D. Pepper Older Americans Independence Center (University center funded by NIH/NIA), $36,960, 6/1/05-5/31/06. Role: PI (co-IÕs: M. Redfern, J. Furman, P. Sparto)

¥        Hewlett International Grant Program, $2,000, 6/01-6/02.

¥        Central Research Development Fund, $13,400, 7/95-6/96.

PROFESSIONAL ACTIVITIES

¥        Associate Editor and member of the Editorial Board, IEEE Transactions on Biomedical Engineering, 2005-date.

¥        Member of TechComm on Acoustic Signal Processing, Acoustical Society of America, 2000-date.

¥        Guest associate editor for feature article ``The History of NoiseÕÕ in IEEE Signal Processing Magazine, Nov. 2005.

¥        NASA Sensory Motor Adaptation Review Panel, July 2004; Oct. 2003.

¥        Co-Guest Editor, IEEE Engineering in Medicine and Biology Magazine, special issue on postural control, vol. 22, no. 2, March/April 2003.

¥        Signal Processing Chapter Chair of the Pittsburgh Section IEEE, 1997-2001, 2002-2003.

¥        Technical Program Committee member, IEEE Engineering in Medicine and Biology conference, 2001.

¥        Member of NIST Standards Committee ISO TC 108/WG 27 "Signal Processing Methods for the Analysis of Non-Stationary Mechanical Vibration and Shock" and TC 108/WG 26 "Signal Processing Methods for the Analysis of Stationary Mechanical Vibration," 2000-2005.

¥        General Chair, IEEE Intl. Symp. Time-Frequency and Time-Scale Analysis, Pittsburgh, Oct. 1998.

¥        Guest Editor, PROCEEDINGS of the IEEE, special issue on "Time-Frequency Analysis: Biomedical, Acoustical and Industrial Applications," vol. 84, no. 9, Sep. 1996.

¥        Co-Guest Editor, Multidimensional Systems and Signal Processing, Special Issue on "New Developments in Time-Frequency Analysis," vol. 9, no. 4. Oct. 1998.

¥        Session Organizer and Chair, Applications of Time-Frequency Analysis in Acoustics, 138th Mtg. of the Acoustical Society of America, Columbus, OH, Nov. 1-5, 1999.

¥        Session Co-Chair, Sonar Signal Processing III, IEEE OCEANS, Vancouver, BC, Oct. 1-4, 2007.

¥        Session Co-Chair, Time-Frequency and Time-Scale Analysis, SPIE Advanced Signal Processing Algorithms, Architectures, and Implementations VII-XVII, 1997-2007.

¥        Session Chair, Time-Frequency Analysis and Wavelets, 1995 IEEE International Conference on Acoustics, Speech and Signal Processing, Detroit, MI, May 9-12, 1995.

¥        Senior Member of the Institute of Electronic and Electrical Engineers (IEEE), and member of the Acoustical Society of America (ASA), the International Society for Optical Engineering (SPIE), and Tau Beta Pi engineering honor society (inducted 1983).

 

TEACHING
BioE 1580: Biomedical Applications of Signal Processing (AY10-1, 11-1)

EE/CoE 1896: Sr. Design Projects (08-1)

BioE/ECE 2695: Special Topics in Control Ð Human Postural Control (06-2)

EE/CoE 0031 - Linear Circuits and Systems 1 (00-1, 03-1, 04-2, 07-1)
EE 1552 - Signals and Systems Analysis (94-1, 94-2, 95-1, 95-2, 96-1, 96-2, 97-1, 98-1, 98-2, 99-2, 01-2, 03-2, 07-2, 08-2)
EE 2523 - Digital Signal Processing (95-2)
EE 2595 - Special Topics in Signal Processing (95-1, 04-1)
EE/BioE 3528 - Time-Frequency Signal Analysis (96-1, 97-2, 99-1, 01-1, 03-1, 05-2, 07-2, 09-1). This upper-level graduate course was developed by Prof. Loughlin

Ph.D./M.S. ADVISING
Jody Fordham, M.S., Dec. 1996. Project: Nonlinear (Order Statistic) Filtering
David Wozny, M.S., Dec. 1997. Thesis: "Human Postural Control Model"
Berkant Tacer, Ph.D., Dec. 1997.
        Dissertation: "Time-Frequency Analysis and Classification of Nonstationary Signals"
Mustafa Emresoy, Ph.D., April 1998 (co-advisor with Dr. El-Jaroudi)
        Dissertation: "New Techniques in Time-Frequency Analysis"
Keith Davidson, Ph.D. , Aug. 2000
        Dissertation: "Instantaneous Moments of a Signal"
Ferhat Cakrak, Ph.D., April 2001
        Dissertation: "Multiple Window Time-Varying Spectral Analysis"
Seong-cheol Jang, Ph.D. Dec. 2001
        Dissertation: "Adaptive Excision of AM-FM Interference in Spread Spectrum Communications"
Dami Aluko, M.S., Apr. 2004
        Thesis: ÒUnderwater sound propagation analysis and modelingÓ
Aasma Walia, M.S., Apr. 2004
        Thesis: ÒIdentification and restoration of a class of aliased signalsÓ

Arash Mahboobin, Ph.D. Dec. 2007
        Dissertation: ÒComputational and Robotic Models of Human Postural ControlÓ

Benjamin Shelly, M.S. student

        Topic: Time-frequency analysis of heart-rate variability

Greg Okopal, Ph.D. Aug. 2009
        Dissertation: ÒPhase Space Analysis and Classification of Sonar Echoes in Shallow-Water ChannelsÓ

Massimo Cenciarini, Ph.D. student
        Topic: Human balance studies

Rebecca Ross, M.S., Dec. 2008

Thesis: Damping and Dispersion of Twisted-Pair Transmission Line and a Compensation Method to Improve Location of Impedance Discontinuities

Brandon Hamschin, Ph.D. student

Topic: Sonar signal processing and waveform design

Vikram Thiruneermalai Gomatam, Ph.D. student

Topic: Sonar signal processing and classification

 

UNIVERSITY and DEPARTMENT SERVICE

School of Engineering Appointment, Promotion and Tenure Review Committee, 2006-2009 (Chair 2008-09); School of Engineering Planning and Budgeting Committee, 2005-2009; 2010-current; University Research Council, 2002-2005 (Chair of Science and Engineering CRDF Proposal Review subcommittee, 2004-2005); Search Committee for Associate Dean for Research, 1999-2000 (Chair); School Tenure and Promotion Policy Committee, 1999; School Committee on New Sources of Revenue, 1993-94.

Bioengineering Graduate Program Assessment Committee, 2009-2010; Bioengineering Graduate Admissions Committee, 1997-2003, 2009-current (Chair); Bioengineering Faculty Search Committee, 1996-97; Bioengineering Curriculum Development, 1995-97.

ECE Appointment, Promotion and Tenure Review Committee, 2006-2007; ECE Planning and Budgeting Committee, 2005-2008; Interim Chair, ECE department (2004-2005); EE Graduate Recruiting and Admissions Committee (2003-2004; Chair); EE Graduate Committee (2002-2003; Chair 03-1 semester); EE Faculty Search Committee, 1997-2001 (Chair 2000-2001); EE Graduate Recruiting Committee, 2000-2001; EE Graduate Research Review Organizing Committee, 1993-96 (Chair in 1996); EE Undergraduate Curriculum Committee, 1993-95, 1996-98; EE Graduate Curriculum Committee, 1995-96; EE Student/Faculty Committee, 1995-96; EE Retreat Planning Committee, 1994-95.

Assisted Freshman Program via recruitment activities, including phoning prospective students and visiting Sewickley Academy (1993-94), Frick Academy (1993-94) and Highlands Sr. High School (1996-97); service as a Faculty Mentor (1993-94); participation in Career Day 1995; participant in freshman seminar career discussions 1997; judge for Pittsburgh Regional Science and Engineering Fair, Duquesne University, 1998, 1999.

Faculty Advisor to HKN (1996-2003), Tau Beta Pi (1996-99) and Coop program (1996-2006).

Organized Grantsmanship Workshop for Assistant Profs. of the School, 1996.  

BIBLIOGRAPHY

 
Refereed Journal Articles

1.       G. Okopal and P. Loughlin, ``Propagation-invariant classification of sounds in channels with dispersion and absorptionÔÕ, J. Acoust. Soc. Am., Vol. 128, Iss. 5, pp. 2888-2897, 2010.

2.       P. Loughlin, ``Local duration-bandwidth product of propagating pulses,ÕÕ J. Mod. Optics, Vol. 57, Issue 19, pp. 1944 Ð 1948, 2010.

3.       Y.T. Tzen, D. Brienza, P. Karg and P. Loughlin, ÒEffects of local cooling on sacral skin perfusion response to pressure: Implications for pressure ulcer prevention,Ó J. Tissue Viability, vol. 19, no. 3, pp. 86-97, 2010.

4.       M. Cenciarini, P. Loughlin, P. Sparto and M. Redfern, ``Stiffness and damping in postural control increases with age,ÕÕ IEEE Trans. Biomed. Engr., vol. 57, no. 2, pp. 267-275, 2010.

5.       G. Okopal and P. Loughlin, ``Moments of a pulse propagating with dispersion and damping: a phase space based approximation method,ÕÕ J. Modern Optics, vol. 56, no. 18, pp. 2133-2136, 2009.

6.       A. Mahboobin, P. Loughlin, C. Atkeson and M. Redfern, ``A mechanism for sensory re-weighting in postural control,ÕÕ Medical & Biological Engineering & Computing, vol. 47, no. 9, pp. 921-929, 2009.

7.       K. OÕConnor, P. Loughlin, M. Redfern and P. Sparto, ÒPostural adaptations to repeated optic flow stimulation in older adultsÓ Gait and Posture, vol. 28, no. 3, pp. 385-391, 2008.

8.       A. Mahboobin, P. Loughlin, M. Redfern, S. Anderson, C. Atkeson, J. Hodgins, ÒSensory adaptation in human balance control: Lessons for biomimetic robotic bipeds,Ó Neural Networks, vol. 21, no. 4, pp. 621-627, 2008.

9.       G. Okopal, P. Loughlin and L. Cohen,  ``Dispersion-invariant features for classification,Ó J. Acoust. Soc. Amer., vol. 123, no. 2, pp. 832-841, 2008.

10.    G. Okopal, P. Loughlin and J. Angell, ``Propagation-invariant classification of active impulsive sonar signals (U),ÕÕ J. Underwater Acoustics, vol. 58, no. 4, pp. 1063-1088, 2008. (Secret)

11.    P. Loughlin and L. Cohen, ``Approximate wave function from approximate non-representable Wigner distributions,ÕÕ J. Modern Optics, vol. 55, no. 19/20, pp. 3379-3387, 2008.

12.    L. Cohen, P. Loughlin and G. Okopal, ``Exact and approximate moments of a propagating pulse,ÕÕ J. Modern Optics, vol. 55, no. 19/20, pp. 3349-3358, 2008.

13.    A. Mahboobin, P. Loughlin and M. Redfern, ÒA model-based approach to attention and sensory integration in postural control of older adults,Ó Neuroscience Letters, vol. 429, pp. 147-151, 2007.

14.    P. Loughlin, ÒComments on ÔThe generalized Wiener process for colored noiseÕ,Ó IEEE Signal Processing Letters, vol. 14, no. 10, pp. 766-769, 2007.

15.    J. Pitton, W. Kooiman, P. Loughlin and J. McLaughlin, ÒEnvironmental effects on classification of impulsive-source sonar echoes in shallow  water (U),Ó J. Underwater Acoustics, vol. 56, no. 1, pp. 253-266, 2006. (Secret)

16.    P. Loughlin, ÒWigner distribution approximation for filtered signals and waves,Ó J. Modern Optics, vol. 53, no. 16-17, pp. 2387 Ð 2397, 2006.

17.    P. Loughlin, ÒTime-varying spectral approximation of filtered signals,Ó IEEE Signal Processing Letters, vol. 13, no. 10, pp. 604-607, 2006.

18.    M. Musolino, P. Loughlin, P. Sparto and M. Redfern ÒSpectrally similar periodic and non-periodic optic flows evoke different postural sway responses,Ó Gait & Posture, vol. 23, iss. 2, pp. 180-188, 2006.

19.    A. Mahboobin, P. Loughlin, M. Redfern, P. Sparto, ÒSensory re-weighting in human postural control during moving-scene perturbations,Ó Exp Brain Res, vol. 167, pp. 260-267, 2005.

20.    P. Loughlin and L. Cohen, ÒA Wigner approximation method for wave propagation,Ó J. Acoust. Soc. Amer., vol. 118, no. 3, pp. 1268-1271, 2005.

21.    P. Sparto, J. Jasko, P. Loughlin, ÒDetecting postural responses to sinusoidal sensory inputs: a statistical approach,Ó IEEE Trans. Neural Syst. And Rehab. Engr., vol. 12, no. 3, pp. 360-366, 2004.

22.    P. Loughlin and L. Cohen, "The uncertainty principle: global, local or both?," IEEE Trans. Sig. Process., vol. 52, no. 5, pp. 1218-1227, 2004.

23.    R. Peterka and P. Loughlin, ÒDynamic regulation of sensorimotor integration in human postural control,Ó J. Neurophysiol., vol. 91, pp. 410-423, 2004.

24.    P. Loughlin and L. Cohen, "Current and quasi-probability phase-space distributions," J. Mod. Optics, vol. 50, pp. 2305-2329, 2003.

25.    L. Cohen and P. Loughlin, "Author's Reply," Signal Processing, vol. 83, no. 8, pp. 1821-1822, 2003.

26.    P. Loughlin and M. Redfern, ÒAnalysis and modeling of human postural control,Ó  IEEE Engineering in Medicine and Biology Magazine, vol. 22, no. 2, p. 18, 2003 (editorial to special issue).

27.    P. Loughlin, M. Redfern and J. Furman, "Nonstationarities of postural sway: The utility of time-frequency analysis in studying human balance," IEEE Engineering in Medicine and Biology Magazine, vol. 22, no. 2, pp. 69-75, 2003. --, ÒErrata Ð Nonstationarities of postural swayÓ IEEE EMB Magazine, vol. 22, no. 3, p. 14, 2003.

28.    J. Pitton, P. Loughlin, J. Luby and J. McLaughlin, "Biologically-inspired feature extraction for classification of impulsive source sonar echoes (U)," US Navy Journal of Underwater Acoustics (Secret), vol. 52, no. 1, pp. 367-380, 2002.

29.    P. Loughlin and L. Cohen, "Local properties of dispersive pulses," J. Mod. Optics, vol. 49, no. 14/15, pp. 2645-2655, 2002.

30.    L. Cohen, L. Galleani, R. Hedges, D. Hughes, P. Loughlin and B. Suter,  "TimeÐfrequency analysis of a variable stiffness model for fault development," Digital  Signal Processing, vol. 12, pp. 429-440, 2002.

31.    L. Cohen and P. Loughlin, "Generalized Wigner distributions, moments, and conditional correspondence rules," J. Mod. Optics, vol. 49, no. 3/4, pp. 539-560, 2002.

32.    S.-C. Jang and P. Loughlin, "AM-FM interference excision in spread spectrum communications via projection filtering," EURASIP Journal on Applied Signal Processing, vol. 2001, no. 4, pp. 239-248, 2001.

33.    B. Tacer and P. Loughlin, "A training-based approach for robust classification of unknown transients with unknown arrival time and unknown Doppler shift," J. Franklin Institute, vol. 338, pp. 751-764, 2001.

34.    P. Loughlin and K. Davidson, "Modified Cohen-Lee time-frequency distributions and instantaneous bandwidth of multicomponent signals," IEEE Trans. Signal Process., vol. 49, no. 6, pp. 1153-1165, 2001.

35.    F. Cakrak and P. Loughlin, "Multiple window time-varying spectrum with instantaneous bandwidth and frequency constraints," IEEE Trans. Sig. Process., vol. 49, no. 8, pp. 1656-1666, 2001.

36.    F. Cakrak and P. Loughlin, "Multiple window time-varying spectral analysis," IEEE Trans. Sig. Process., vol. 49, no. 2, pp. 448-453, 2001.

37.    P. Loughlin and M. Redfern, "Spectral characteristics of visually-induced postural sway in healthy elderly and healthy young subjects," IEEE Trans. Rehab. Engr., vol. 9, no. 1, pp. 24-30, 2001.

38.    K. Davidson and P. Loughlin, "Instantaneous spectral moments," J. Franklin Institute, vol. 337, pp. 421-436, 2000.

39.    P. Loughlin, F. Cakrak and L. Cohen, "Conditional moments analysis of transients with application to helicopter fault data," Mech. Syst. Sig. Process., vol. 14, no. 4, pp. 511-522, 2000.

40.    S. Shah, A. El-Jaroudi, P. Loughlin and L. Chaparro, "Signal synthesis and positive time-frequency distributions," J. Franklin Institute, vol. 337, pp. 317-328, 2000.

41.    P. Loughlin and K. Davidson, "Instantaneous kurtosis," IEEE Signal Process. Lttrs., vol. 7, no. 6, pp. 156-159, 2000.

42.    K. Davidson and P. Loughlin, "Compensating for window effects in the calculation of spectrographic instantaneous bandwidth," IEEE Trans. Biomed. Engr., vol. 47, no. 4, pp. 556-558, 2000.

43.    L. Cohen, P. Loughlin and D. Vakman, "On an ambiguity in the definition of the amplitude and phase of a signal," Signal Processing, vol. 79, no. 3, pp. 301-307, 1999.

44.    W. Nho and P. Loughlin, "When is instantaneous frequency the average frequency at each time?," IEEE Sig. Process. Lttrs., vol. 6, no. 4, pp. 78-80, 1999.

45.    M. Emresoy and P. Loughlin, "Weighted least squares Cohen-Posch time-frequency distributions with specified conditional and joint moment constraints," IEEE Trans. Sig. Process., vol. 47, no. 3, pp. 893-900, 1999.

46.    P. Loughlin, "Spectrographic measurement of instantaneous frequency and the time-dependent weighted average instantaneous frequency," J. Acoust. Soc. Amer., vol. 105, no. 1, pp. 264-274, 1999.

47.    P. Loughlin, "Do bounded signals have bounded amplitudes?," Multidim. Syst. Sig. Process., vol. 9, no. 4, pp. 419-424, 1998.

48.    B. Tacer and P. Loughlin, "Nonstationary signal classification using the joint moments of time-frequency distributions," Pattern Recognition, vol. 31, no. 11, 1998.

49.    M. Emresoy and P. Loughlin, "Weighted least squares Cohen-Posch time-frequency distributions," IEEE Trans. Sig. Process., vol. 46, no. 3, pp. 753-757, 1998.

50.    P. Loughlin, "Cohen-Posch (positive) time-frequency distributions: development and applications," Applied Sig. Process., vol. 4, pp. 122-130, 1997.

51.    P. Loughlin and B. Tacer, "Instantaneous frequency and the conditional mean frequency of a signal," Sig. Process., vol. 60, no. 2, pp. 153-162, 1997.

52.    P. Loughlin and G. Bernard, "Cohen-Posch (positive) time-frequency distributions and their application to machine vibration analysis," Mech. Syst. Sig. Process., vol. 11, no. 4, pp. 561-576, 1997.

53.    S. Shah, P. Loughlin, L. Chaparro and A. El-Jaroudi, "Informative priors for minimum cross-entropy positive time-frequency distributions," IEEE Sig. Process. Lttrs., vol. 4, no. 6, pp. 176-177, 1997.

54.    P. Loughlin and B. Tacer, "Comments on the interpretation of instantaneous frequency," IEEE Sig. Process. Lttrs., vol. 4, no. 5, pp. 123-125, 1997.

55.    P. Loughlin, M. Redfern and J. Furman, "Time-varying characteristics of visually-induced postural sway," IEEE Trans. Rehab. Engr., vol. 4, no. 4, pp. 416-424, 1996.

56.    P. Loughlin and B. Tacer, "On the amplitude- and frequency-modulation decomposition of signals," J. Acoust. Soc. Amer., vol. 100, no. 3, pp. 1594-1601, 1996.

57.    B. Tacer and P. Loughlin, "Time-scale energy density functions," IEEE Trans. Sig. Process., vol. 44, no. 5, pp. 1310-1314, 1996.

58.    P. Loughlin, ÒScanning the Special Issue on Time-Frequency Analysis,Ó Proceedings of the IEEE, Volume 84,  Issue 9,  p. 1195, Sept. 1996 (editorial to special issue).

59.    P. Loughlin, "Comments on scale invariance of time-frequency distributions," IEEE Sig. Process. Lttrs., vol. 2, no. 12, pp. 217-218, 1995.

60.    P. Loughlin, J. Pitton and B. Hannaford, "Approximating time-frequency density functions via optimal combinations of spectrograms," IEEE Sig. Process. Lttrs., vol. 1, no. 12, pp. 199-202, 1994.

61.    P. Loughlin, J. Pitton and L. Atlas, "Construction of positive time-frequency distributions," IEEE Trans. Sig. Process., vol. 42, no. 10, pp. 2697-2705, 1994.

62.    J. Pitton, L Atlas and P. Loughlin, "Applications of positive time-frequency distributions to speech processing," IEEE Trans. Speech and Audio Process., vol. 2, no. 4, pp. 554-566, 1994.

63.    P. Loughlin, J. Pitton and L. Atlas, "Bilinear time-frequency representations: New insights and properties," IEEE Trans. Sig. Process., vol. 41, no. 2, pp. 750-767, 1993.

64.    P. Loughlin, W. Bowes and D. Westenskow, "An oil-based model of inhalation anesthetic uptake and elimination," Anesthesiology, vol. 71, no. 2, pp. 278-282, 1989.

Edited Books and Book Chapters

1.       L. Cohen and P. Loughlin, ``Dispersion, its effects, and compensation,Ó in F. Sadjadi (ed.), Physics of Automatic Target Recognition, Springer, 2007.

2.       P. Loughlin and L. Cohen, "Positive Time-Frequency Distributions," in A. Papandreaux (ed.), Applications in Time-Frequency Signal Processing, Ch. 3, pp. 121-162, CRC Press, 2003.

3.       D. Groutage, D.Bennink, P. Loughlin, and L. Cohen, "Positive Time-Frequency Distributions and Acoustic Echoes," in A. Papandreaux (ed.), Applications in Time-Frequency Signal Processing, Ch. 4, pp. 163-178, CRC Press, 2003.

4.       P. Loughlin, L. Atlas and J. Pitton, "Advanced time-frequency representations for speech processing," in M. Cooke et al. (eds.), Visual Representations of Speech Signals, John Wiley & Sons, Ltd., Chichester, England, 1993, pp. 27-53.

5.       L. Atlas, P. Loughlin and J. Pitton, "Signal analysis with cone-kernel time-frequency representations and their application to speech," in B. Boashash (ed.), Time-Frequency Signal Analysis: Methods and Applications, Longman Cheshire, Sydney, Australia, 1992, pp. 375-388.

6.       D. Westenskow and P. Loughlin, "Quantitative anesthesia with the help of closed-loop control," in K. Van Ackern et al. (eds.), Quantitative Anaesthesia, Springer-Verlag, W. Germany, 1987, pp. 111-119.

Conference Proceedings

1.       B. Hamschin and P. Loughlin, ÒBuried Target Detection and Classification Based on Linear Time-Varying Filtering,Ó IEEE OCEANS Õ10 Seattle, August 2010.

2.       B. Hamschin and P. Loughlin, ÒSonar waveform design for optimum target detection: the impact of object burial state,Ó IEEE OCEANS '10 Sydney, May 2010.

3.       B. Hamschin and P. Loughlin, ÒOptimal time and frequency domain waveform design for target detection,Ó Proc. SPIE, Automatic Target Recognition XX, Defense, Sensing and Security Symposium, vol. 7696, Apr. 2010.

4.       Y.-T. Tzen, D. Brienza, P. Karg, P. Loughlin, M. Geyer,  ÒEffectiveness of Local Fast and Slow Cooling on Pressure Induced Reactive Hyperemia (RH) in Adult Human ParticipantsÓ Proc. Rehabilitation Engineering and Assistive Technology Society of North America (RESNA) 33rd Int. Conf. on Technology and Disability, Las Vegas, NV, 2010.

5.       M. Cenciarini, P. Loughlin, P. Sparto and M. Redfern, ``Medial-lateral postural control in older adults exhibits increased stiffness and damping,ÕÕ IEEE Engineering in Medicine and Biology Conference, pp. 7006-9, Minneapolis, MN, Sep. 2-6, 2009.

6.       Y.-T. Tzen, P. Loughlin, and D. Brienza, ``Analyzing the Mechanisms of Local Cooling on Pressure Induced Reactive Hyperemia by Applying Short-Time Fourier Transform (STFT), Proc. Rehabilitation Engineering and Assistive Technology Society of North America (RESNA), 2009.

7.       G. Okopal and P. Loughlin, ``Moment feature variability in uncertain propagation channels,ÕÕ Proc. SPIE Advanced Signal Processing Algorithms, Architectures, and Implementations XIX, vol. 7444, 2009.

8.       P. Loughlin, ``Conditional and joint positive time-frequency distributions: A brief review,ÕÕ Proc. SPIE Advanced Signal Processing Algorithms, Architectures, and Implementations XIX, vol. 7444, 2009.

9.       G. Okopal and P. Loughlin, ``Moments of a wave propagating with dispersion and damping,ÕÕ Proc. SPIE Defense & Security Symp., vol. 7335, paper # 7335-07, 2009.

10.    G. Okopal and P. Loughlin, ``A phase space view of dispersive propagation, moment variability, and environmentally-invariant features for classification,ÕÕ Proc. 3rd Intl. Conf. Underwater Acoustic Measurements, pp. 475-482, Nafplia, Greece, June 21-25, 2009.

11.    L. Cohen and P. Loughlin, ``Simple approximation scheme for dispersive pulse propagation, with comparison to the stationary phase approximation,ÕÕ Proc. 3rd Intl. Conf. Underwater Acoustic Measurements, pp. 1531-1536, Nafplia, Greece, June 21-25, 2009.

12.    L. Cohen and P. Loughlin, ``A phase space approach to shallow water wave propagation,Ó IEEE OCEANSÕ07, paper # 070508-008, pp. 1-5, Vancouver, BC, Oct. 1-4, 2007.

13.    G. Okopal and P. Loughln, ÒPropagation-Invariant Classification of Signals in Channels with Dispersion and Damping,Ó IEEE OCEANSÕ07, paper # 070508-007, pp. 1-8, Vancouver, BC, Oct. 1-4, 2007.

14.    G. Okopal and P. Loughlin, ÒPropagation-Invariant Classification of Shallow Water Sonar Signals,Ó Intl. Conf. On Detection and Classification of Underwater Targets, Edinburgh, UK, 18-19 Sep. 2007.

15.    L. Cohen, P. Loughlin and K. Davidson, ÒConstruction of time-frequency representations from moments,Ó Proc. SPIE Advanced Signal Processing Algorithms, vol. 6697, Aug. 26-28, 2007.

16.    L. Cohen, K. Davidson and P. Loughlin, ``Constructing densities from moments,Ó Proc. SPIE Defense & Security Symp., vol. 6566, April 9-13, 2007.

17.    G. Okopal and P. Loughlin, ``Feature extraction for classification of signals propagating in channels with dispersion and dissipation,Ó Proc. SPIE Defense & Security Symp., vol. 6566, April 9-13, 2007.

18.    P. Loughlin, ÒTime-frequency approximations, with applications to filtering, modulation and propagation,Ó Proc. SPIE Advanced Signal Processing Algorithms, Architectures, and Implementations XVI, vol. 6313, pp. 63130S-1 Ð 63130S-9, 2006.

19.    A. Mahboobin, P. Loughlin and M. Redfern, ÒModeling attention and sensory integration in postural control of older adults,Ó Amer. Soc. Biomech. mtg, Sept 6-9, Blacksburg, VA, pp. 39-40, 2006.

20.    K. OÕConnor, P. Loughlin, M. Redfern and P. Sparto, ÒInfluence of change in surface support on standing postural sway in older adults,Ó Amer. Soc. Biomech. mtg, Sept 6-9, Blacksburg, VA, pp. 182-183, 2006.

21.    A. Mahboobin, P. Loughlin and M. Redfern, ÒA model-based approach to attention and sensory integration in postural control of older adults,Ó Proc. 28th IEEE EMBS Conf., Aug 30-Sep 3, NYC, pp. 1315-1318, 2006.

22.    G. Okopal, P. Loughlin and L. Cohen, ÒRecognition of propagating vibrations, and invariant features for classification,ÕÕ Proc. SPIE Defense & Security Symposium, vol. 6234, pp. 623415-1 Ð 623415-14, 2006.

23.    P. Loughlin, ÒEffect of convolution and modulation on the time-varying spectrum of a signal, with application to target recognition,Ó Proc. SPIE Defense & Security Symposium, vol. 6234, pp. 62340K-1 Ð 62340K-8, 2006.

24.    P. Loughlin and L. Cohen, ``Wigner approximation for filtered random functions,Ó Proc. 26th Intl. Colloquium on Group Theoretical Methods in Physics, CUNY Graduate Center, June 26-30, 2006.

25.    P. Loughlin and A. Walia, ÒA method to identify and restore a class of aliased signals,Ó Proc. SPIE Advanced Signal Processing Algorithms, Architectures, and Implementations XIV, vol. 5559, pp. 184-191, 2004.

26.    P. Loughlin and L. Cohen, ÒPhase-space approach to wave propagation with dispersion and damping,Ó Proc. SPIE Advanced Signal Processing Algorithms, Architectures, and Implementations XIV, vol. 5559, pp. 221-231, 2004.

27.    J. Pitton, W. Kooiman, J. McLaughlin and P. Loughlin, ÒClassification of impulsive source sonar echoes in the presence of dispersion (U),Ó Proc. 33rd Annual Meeting of the Technical Cooperation Program (Secret), Oct. 18-21, Newport, RI, 2004.

28.    L. Cohen and P. Loughlin, ÒA joint distribution approach to wave propagation and array processing,Ó Proc. IEEE Sensor and Array Multichannel Signal Processing (SAM) workshop, paper S12_10, pp. 1-4, Barcelona, Spain, 18-21 July, 2004.

29.    L. Cohen and P. Loughlin, ÒSationary phase approximation: a modification,Ó Proc. SPIE Defense & Security Symp., Automatic Target Recognition XIV, vol. 5426, pp. 227-233, 2004.

30.    P. Loughlin and L. Cohen, ÒMoment features invariant to dispersion,Ó Proc. SPIE Defense & Security Symp., Automatic Target Recognition XIV, vol. 5426, pp. 234-246, 2004.

31.    J. Jasko, P. Loughlin, M. Redfern, P. Sparto, ÒThe role of central and peripheral vision in the control of upright posture during anterior-posterior optic flow,Ó   Proceedings of the 27th Annual Meeting of the American Society for Biomechanics, Toledo, OH, September 25-27, 2003.

32.    M. Musolino, P. Loughlin, M. Redfern, ÒEffects of Ôtone-in-noiseÕ moving visual scenes on postural sway,Ó Proceedings of the 27th Annual Meeting of the American Society for Biomechanics, Toledo, OH, September 25-27, 2003.

33.    P. Loughlin and L. Cohen, "Time-frequency distributions and the marginals," Proc. SPIE Advanced Signal Processing Algorithms, Architectures, and Implementations XIII, vol. 5205, pp. 59-74, Aug. 2003.

34.    A. Mahboobin, C. Beck, M. Moeinzadeh, P. Loughlin, ``Analysis and validation of a human postural control model,ÕÕ Proceedings American Control Conference, Alaska, May 8-10, 2002, vol.5, pp 4122 Ð4128.

35.    P. J. Loughlin, "Local spectral and spatial frequency moments of shallow-water sound propagation," Proc. SPIE Advanced Signal Processing Algorithms, Architectures, and Implementations XII, vol. 4791, pp. 51-56, 2002.

36.    M. French, P. Loughlin and L. Cohen, "Cross time-frequency spectra applied to automotive brake noise," Proc. Intl. Modal Analysis Conference XX, Los Angeles, CA, pp. 457-460,Feb. 2002.

37.    P. J. Loughlin, "What are the time-frequency moments of a signal?," Proc. SPIE Advanced Signal Processing Algorithms, Architectures, and Implementations XI, vol. 4474, pp. 35-44, Aug. 2001.

38.    S-C. Jang and P. Loughlin, "Projection filtering technique for AM-FM interference excision in DSSS communication systems," Proc. IEEE conf. on Nonlinear Signal and Image Processing, Baltimore, MD, June 2001.

39.    P. Loughlin, "Time-frequency moments, 'eyelets' and machine faults," Proc. SPIE Wavelet Applications VIII, vol. 4391, pp. 44-50, 2001.

40.    D. Nelson, P. Loughlin, G. Cristobal and L. Cohen, "Time-frequency methods for biological signal estimation," IEEE 15th Intl. Conf. Pattern Recognition, Barcelona, Spain, Sep. 2000.

41.    S.-C. Jang and P. Loughlin, "Use of instantaneous bandwidth for AM-FM jammer excision in spread spectrum communication systems," Proc. SPIE Advanced Signal Processing Algorithms, Architectures, and Implementations X, vol. 4116, pp. 80-90, Aug. 2000.

42.    P. Loughlin and K. Davidson, "Instantaneous spectral skew and kurtosis," Proc. 10th IEEE Workshop SSAP, pp. 574-578, Aug. 2000.

43.    S.-C. Jang and P. Loughlin, "Effect and suppression of wideband AM-FM interference in DSSS communication systems," Proc. Intl. Conf. Telecommunications, pp. 1162-1166, Acapulco, Mexico, May 2000.

44.    F. Cakrak and P. Loughlin, "A new multi-window time-frequency approach yielding accurate low-order conditional moments," Proc. 30th IEEE Asilomar Conf. on Sigs., Syst. and Comps., pp. 1652-1656, Oct. 1999.

45.    P. Loughlin, M. Redfern and J. Furman, "Time-frequency analysis of visually-induced postural sway of healthy young and elderly subjects," Proc. 3rd Intl. Workshop on Biosignal Interpretation, pp. 230-233, June 1999.

46.    P. Loughlin and K. Davidson, "Instantaneous bandwidth of multicomponent signals," Proc. SPIE Advanced Signal Processing Algorithms, Architectures, and Implementations IX, vol. 3807, pp. 610-624, July 1999.

47.    M. French, L. Cohen and P. Loughlin, "Application of time-frequency methods to sound quality analysis in automobiles," Proc. SPIE Advanced Signal Processing Algorithms, Architectures, and Implementations IX, vol. 3807, pp. 546-551, July 1999.

48.    D. Nelson, G. Cristobal, V. Kober, F. Cakrak, P. Loughlin and L. Cohen, "Denoising using time-frequency and image processing methods," Proc. SPIE Advanced Signal Processing Algorithms, Architectures, and Implementations IX, vol. 3807, pp. 564-581, July 1999.

49.    M. French, P. Loughlin, L. Cohen and F. Cakrak, "Time-frequency analysis of automobile road data," Proc. IMAC XVII conference, pp. 391-396, 1999.

50.    P. Loughlin, "Moments and maximum entropy densities in time-frequency," Proc. SPIE Advanced Signal Processing Algorithms, Architectures, and Implementations VIII, v. 3461, pp. 110-119, 1998.

51.    P. Loughlin, ``Local spectral and temporal characterizations of a wave,ÕÕ Proc. SPIE Conf. Automatic Target Recognitions VIII, v. 3371, pp. 552-559, 1998

52.    P. Loughlin, "The time-dependent weighted average instantaneous frequency," Proc. IEEE-SP Intl. Symp. Time-Frequency and Time-Scale Analysis, pp. 97-100, Oct. 1998.

53.    P. Loughlin and K. Davidson, "Positive local variances of time-frequency distributions and local uncertainty," Proc. IEEE-SP Intl. Symp. Time-Frequency and Time-Scale Analysis, pp. 541-544, Oct. 1998.

54.    M. Emresoy and P. Loughlin, "Weighted least-squares implementation of Cohen-Posch time-frequency distributions with specified conditional and joint moment constraints," Proc. IEEE-SP Intl. Symp. Time-Frequency and Time-Scale Analysis, pp. 305-308, Oct. 1998.

55.    F. Cakrak and P. Loughlin, "Instantaneous frequency estimation of polynomial phase signals," Proc. IEEE-SP Intl. Symp. Time-Frequency and Time-Scale Analysis, pp. 549-552, Oct. 1998.

56.    F. Cakrak and P. Loughlin, "Multiple window nonlinear time-varying spectral analysis," Proc. IEEE Intl. Conf. Acous., Speech and Sig. Process.'98, vol. 4, pp. 2409-2412, May 1998.

57.    S. Shah, A. El-Jaroudi, P. Loughlin and L. Chaparro, "Signal synthesis and positive time-frequency distributions," Proc. IEEE-SP Intl. Symp. Time-Frequency and Time-Scale Analysis, pp. 17-20, Oct. 1998.

58.    B. Tacer and P. Loughlin, "A training-based approach to classification of transients with unknown arrival time and Doppler shift," Proc. 31st IEEE Asilomar Conf. on Sigs., Syst. and Comps., pp. 887-891, Nov. 1997.

59.    P. Loughlin, "Applications and recent developments in Cohen-Posch time-frequency distribution analysis," Proc. IEEE UK Symp. Appl. Time-Frequency and Time-Scale Methods, Coventry, UK, pp. 57-64, August 1997.

60.    P. Loughlin, "Time-varying frequencies of a signal," Proc. SPIE Advanced Signal Processing Algorithms, Architectures, and Implementations VII, vol. 3162, pp. 109-122, July 1997.

61.    P. Loughlin and G. Bernard, "The applicability of time-frequency analysis to machine- and process-monitoring," Proc. SAE Aerospace Manufacturing Technology Conf., pp. 243-252, June 1997.

62.    P. Loughlin, D. Groutage and R. Rohrbaugh, "Time-frequency analysis of acoustic transients," Proc. IEEE Intl. Conf. Acous., Speech and Sig. Process.'97, vol. 3, pp. 2125-2128, April 1997.

63.    B. Tacer and P. Loughlin, "Time-frequency based classification," Proc. SPIE Advanced Signal Processing Algorithms, Architectures, and Implementations VI, v. 2846, pp. 186-192, Aug. 1996.

64.    P. Loughlin, M. Redfern and B. Tacer, "Time-varying characteristics of postural sway are different for patients and healthy controls," Proc. IEEE Intl. Conf. Acous., Speech and Sig. Process.'96, vol. 3, pp. 1439-1442, May 1996.

65.    B. Tacer and P. Loughlin, "What are the joint time-frequency moments of a signal?," Proc. IEEE Intl. Conf. Acous., Speech and Sig. Process.'96, vol. 3, pp. 1427-1430, May 1996.

66.    P. Loughlin, L. Atlas, G. Bernard and J. Pitton, "Application of time-frequency analysis to the monitoring of machining processes," Proc. 49th Meeting of the Machinery Failure Prevention Technology Society, (publ.: Vibration Institute, IL), pp. 305-314, April 1995.

67.    B. Tacer and P. Loughlin, "Instantaneous frequency and time-frequency distributions," Proc. IEEE Intl. Conf. Acous., Speech and Sig. Process.'95, vol.2, pp. 1013-1016, May 1995.

68.    P. Loughlin, J. Pitton and B. Hannaford, "Fast approximations to positive time-frequency distributions, with applications," Proc. IEEE Int. Conf. Acous., Speech and Sig. Process.'95, vol. 2, pp. 1009-1012, May 1995.

69.    P. Loughlin, T. Schumann, M. Redfern, J. Furman, L. Chaparro and A. El-Jaroudi, "Time-frequency analysis of postural sway," Proc. 28th IEEE Asilomar Conf. on Sigs., Syst. and Comps., pp. 378-382, Nov. 1994.

70.    B. Tacer and P. Loughlin, "Positive time-scale distributions," Proc. IEEE-SP Intl. Symp. Time-Frequency and Time-Scale Analysis, pp. 201-204, Oct. 1994.

71.    C. Detka, P. Loughlin and A. El-Jaroudi, "On combining evolutionary spectral estimates," Proc. Seventh IEEE SP Workshop on Statistical Signal and Array Processing, pp. 243-246, 1994.

72.    J. Pitton, L. Atlas and P. Loughlin, "Deconvolution for positive time-frequency distributions," Proc.27th IEEE Asilomar Conf. on Sigs., Syst. and Comps., pp. 1450-1454, 1993.

73.    J. Pitton, P. Loughlin and L. Atlas, "Positive time-frequency distributions via maximum entropy deconvolution of the evolutionary spectrum," Proc. IEEE Intl. Conf. Acous., Speech and Sig. Process.'93, vol. IV, pp. 436-439, 1993.

74.    P. Loughlin, J. Pitton and L. Atlas, "Proper time-frequency energy distributions and the Heisenberg uncertainty principle," Proc. IEEE-SP Intl. Symp. on Time-Frequency and Time-Scale Analysis, pp. 151-154, 1992.

75.    P. Loughlin, J. Pitton and L. Atlas, "An information-theoretic approach to positive time-frequency distributions," Proc. IEEE Intl. Conf. Acous., Speech and Sig. Process.'92, vol. V, pp. 125-128, 1992.

76.    W. Music, W. Fox, P. Loughlin, L. Atlas and J. Pitton, "Shift-keyed signal identification using time-frequency processing," Proc. 25th IEEE Asilomar Conf. on Sigs., Sys. and Comps., pp. 846-850, 1991.

77.    L. Atlas, J. Fang, P. Loughlin and W. Music, "Resolution advantages of quadratic signal processing," Proc. SPIE, San Diego, CA, July 1991.

78.    P. Loughlin, J. Pitton and L. Atlas, "New properties to alleviate interference in time-frequency representations," Proc. IEEE Intl. Conf. Acous., Speech and Sig. Process.'91, pp. 3205-3208, 1991.

79.    L. Atlas, P. Loughlin and J. Pitton, "Truly nonstationary techniques for the analysis and display of voiced speech," Proc. IEEE Intl. Conf. Acous., Speech and Sig. Process.'91, pp. 433-436, 1991.

80.    L. Atlas, P. Loughlin and J. Pitton, "A theory of desirable properties for preprocessors for speech recognizers," Proc. IEEE Pac. Rim Conf. on Comm., Comps. and Sig. Process., pp. 803-806, 1991.

81.    J. Pitton, W. Fox, L. Atlas, J. Luby and P. Loughlin, "Range-Doppler processing with the cone-kernel time-frequency representation," Proc. IEEE Pac. Rim Conf. on Comm., Comps. and Sig. Process., pp. 799-802, 1991.

82.    W. Fox, J. Luby, J. Pitton, P. Loughlin and L. Atlas, "Sonar and range-Doppler processing using a cone-shaped kernel time-frequency representation," Proc. 24th IEEE Asilomar Conf. on Sigs., Sys. and Comps., pp. 1079-1083, 1990.

83.    P. Loughlin, J. Pitton and L. Atlas, "A new time-frequency representation for speech and range-Doppler processing," The 1990 Digital Signal Processing Workshop, New Paltz, NY, Sep. 16-19, 1990, pp. 3.13.1-2.

84.    L. Atlas, P. Loughlin, J. Pitton and W. Fox, "Applications of cone-shaped kernel time-frequency representations to speech and sonar analysis," 2nd Intl. Symp. on Sig. Proc. and its Applications, pp. 882-885, Gold Coast, Queensland Australia, Aug. 27-31, 1990.

85.    L. Atlas, W. Kooiman, P. Loughlin and R. Cole, "New nonstationary techniques for the analysis and display of speech transients," Proc. IEEE Intl. Conf. Acous., Speech and Sig. Process.'90, pp. 385-388, 1990.

86.    P. Loughlin and D. Westenskow, "A mechanical model to simulate uptake and elimination of inhalation anesthetics," Proc. IEEE Engr. in Med. and Biol. Soc., 10th Ann. Conf., pp. 589-590, 1988.

87.    P. Loughlin and D. Westenskow, "A closed-loop controller for end-tidal anesthetic concentration," Proc. IEEE Engr. in Med. and Biol. Soc., 9th Ann. Conf., pp. 433-434, 1987.

Abstracts

1.       B. Hamschin and P. Loughlin, ``Sonar transmit and receiver design for detection of underwater objects in nonstationary environments,ÕÕ J. Acoust. Soc. Am., Vol. 128, Issue 4, p. 2432, 2010.

2.       B. Hamschin and P. Loughlin, ``Sonar waveform design for detection of elastic objects,ÕÕ J. Acoust. Soc. Am. Vol. 127, Issue 3, p. 2026, 2010.

3.       P. Loughlin and L. Cohen, ``Wavelets: A comparison with the spectrogram and other methods for time-frequency analysis,ÕÕ J. Acoust. Soc. Am. Vol. 127, Issue 3, p. 1936, 2010.

4.       P. Loughlin, ``Time-frequency and position-wavenumber acoustic signal analysis,ÕÕ J. Acoust. Soc. Am., vol. 126,  p. 2206, 2009.

5.        P. Loughlin, ``A time-frequency approach for studying propagation effects on underwater sound,ÕÕ J. Acoust. Soc. Am., vol. 126, p. 2165, 2009.

6.       P. Loughlin and G. Okopal, ``Environmentally invariant features for classification of active sonar signals.ÕÕ J. Acoust. Soc. Am., vol. 125, p. 2704, 2009.

7.       L. Cohen and P. Loughlin, ``Joint position/wave number and time/frequency features of signals,ÕÕ J. Acoust. Soc. Am., vol. 125, p. 2699, 2009.

8.       M. Cenciarini, P. Loughlin, P. Sparto and M. Redfern, ``Older Adults Exhibits Increased Stiffness and Damping for Medial-Lateral Postural Control,ÕÕ Biomedical Engineering Society (BMES) Annual Fall Scientific Meeting, Pittsburgh, PA, Oct. 7-10, 2009.

9.       P. Loughlin, ``Pulse propagation and classification in time/frequency and position/wavenumber phase space,ÕÕ 157th  mtg. Acous Soc Am, Portland, OR, May 18-22, 2009.

10.    M. Cenciarini, P. Loughlin, P. Sparto M. Redfern, `` Active Stiffness and Damping Increase with Age in Postural Control,ÕÕ Intl. Soc. Posture & Gait Research, June 2009.

11.    P. Loughlin, ``Local phase space moments of a pulse propagating with dispersion and damping,ÕÕ Abstracts of the 39th Winter Colloquium on the Physics of Quantum Electronics (PQE-2009), p. 173, Jan. 2009.

12.    P. Loughlin and G. Okopal, ÒFeatures for propagation-invariant classification of underwater targets,Ó AcousticsÕ08 conference (joint 155th ASA Ð Euronoise), Paris, France, June 29 Ð July 4, 2008.

13.    L. Cohen and P. Loughlin, ÒExact and approximate moments for dispersive pulse propagation,Ó AcousticsÕ08 conference (joint 155th ASA Ð Euronoise), Paris, France, June 29 Ð July 4, 2008.

14.    M. Cenciarini, P. Loughlin, P. Sparto, M. Redfern, ``Active stiffness for standing postural control increases with age,ÕÕ Soc. for Neural Control of Movement 18th Annual Meeeting, Naples, FL, May 2008.

15.    P. Loughlin and G. Okopal, ÒPropagation-invariant classification of sonar signals,ÕÕ 154th mtg. Acoustical Soc. Amer, New Orleans, LA, Nov. 27-30, 2007.

16.    P. Loughlin and G. Okopal, ÒPropagation-invariant Classification,Ó Underwater Acoustic Signal Processing Workshop, Univ. Rhode Island, Alton Jones Campus, Oct. 17-19, 2007.

17.    P. Loughlin, G. Okopal and L. Cohen, ``Position-waveenumber approximation for propagation in random dispersive channels,Ó Pacific Rim Underwater Acoustics Conference 2007, Vancouver, BC, Oct. 4-5, 2007 (2-page extended abstract).

18.    A. Mahboobin, P. Loughlin, and M. Redfern. ÒModeling attentional influence on postural control in young and older adults.Ó International Conf. Society for Gait and Posture, Burlington, Vermont, July 14th Ð 18th, 2007 (2-page extended abstract).

19.    P. Loughlin, ÒWigner approximation for filtered random functions and wave propagation,Ó 153rd mtg. Acous Soc Am, SLC, June 4-8, 2007 (invited).

20.    P. Loughlin, ÒA time-frequency approximation with applications in target recognition,Ó 151st mtg. Acoustical Society of America, Providence, RI, June 5-9, 2006.

21.    P. Loughlin and L. Cohen, ÒWigner and Ambiguity Function Approximation Methods for Acoustic Propagation,Ó IEEE Underwater Acoustic Signal Processing workshop, West Greenwich, RI, Oct. 5-7, 2005.

22.    M. Musolino, P. Loughlin and M. Redfern, ÒPostural sway responses to predictable and unpredictable moving visual scenes, Proceedings of the 28th ASB, Abstract #289, Portland, Oregon, 2004.

23.    A. Mahboobin, P. Loughlin, M. Redfern and P. Sparto, ÒSensory re-weighting in human postural control during moving-scene perturbations,Ó Abstracts of the 27th Annual Midwinter Meeting of the Association for Research in Otolaryngology, #81, p. 37, Daytona Beach, FL, Feb. 2004.

24.    J. Jasko, P. Sparto, M. Redfern and P. Loughlin, ÒThe role of central and peripheral optic flow in the control of upright posture within a mixed-frequency visual environment,Ó Abstracts of the 27th Annual Midwinter Meeting of the Association for Research in Otolaryngology, #66, p. 32, Daytona Beach, FL, Feb. 2004.

25.    P. Loughlin, ÒLocal characteristics of dispersive pulse propagation,Ó J. Acoust. Soc. Amer., vol. 114, no. 4, p. 2447, 2003.

26.    P. Loughlin, ÒTime-frequency analysis and conditional moments of shallow-water sound propagation,Ó J. Acoust. Soc. Amer., vol. 111, no. 5, p. 2407, 2002.

27.    R. Peterka and P. Loughlin, "Oscillatory body sway following support surface transitions: A reflection of adapting sensory gain in postural control," Abstracts of the 25th Annual Midwinter Meeting of the Association for Research in Otolaryngology, p. 234, St. Petersburg Beach, FL, Jan. 2002.

28.    S.-Y. Yoo, P. Loughlin, J. Furman and M. Redfern, "Adaptation and Habituation in Visually-Induced Postural Sway," Abstracts of the 24th Annual Midwinter Meeting of the Association for Research in Otolaryngology, p. 116, St. Petersburg Beach, FL, Feb. 2001.

29.    P. Loughlin, ÒMethods and applications of time-frequency analysis,Ó J. Acoust. Soc. Amer., vol. 107, no. 5, p. 2827, 2000.

30.    P. Loughlin and F. Cakrak, ÒTime-varying coherent AM-FM demodulation and denoising of acoustic signals,Ó J. Acoust. Soc. Amer., vol. 106, no. 4, p. 2157, 1999.

31.    P. Loughlin, ÒTime-frequency analysis: A tutorial review,Ó J. Acoust. Soc. Amer., vol. 106, no. 4, p. 2129, 1999.

32.    P. Loughlin and B. Tacer, ÒMaximum entropy time-frequency analysis,Ó J. Acoust. Soc. Amer., vol. 104, no. 3, p. 1760, 1998.

33.    C. Wallroth, P. Loughlin, and D. Westenskow, "Feedback control for anesthesia workstations," Anesthesiology, vol. 87, p. A468, 1997.

34.    P. Loughlin and M. Redfern, "Time-varying characteristics of postural sway in the elderly," Annals of Biomed. Engr., p. S-111, 1995.

35.    C. Wallroth, D. Westenskow, and P. Loughlin, "Computer control of fresh gas flow to an anesthesia breathing circuit," Anesthesiology, vol. 81, no. 3A, p. A573, 1994.

36.    D. Westenskow, P. Loughlin and C. Wallroth, "Automatic control of the induction of inhalation anesthesia," Anesthesiology, vol. 81, no. 3A, p. A482, 1994.

37.    L. Atlas, J. Pitton and P. Loughlin, "Proper time-frequency distributions for speech," J. Acoust. Soc. Amer., vol. 93, no. 4, Pt. 2, p. 2318, 1993.

38.    P. Loughlin and D. Westenskow, "A mechanical model to simulate uptake and elimination of inhalation anesthetics," Anesthesiology, vol. 69, no. 3A, p. A276, 1988.

Patents

¥        P. Loughlin, D. Westenskow and C. Wallroth, U.S. pat. 5,094,235, "Anesthetic ventilating apparatus having a breathing circuit and control loop for anesthetic component," 1992.

¥        P. Loughlin, D. Westenskow, H. Wied, B. Schwartau and C. Wallroth, U.S. pat. 4,878,388, "Method for simulating and demonstrating gas exchange during mandatory or assisted ventilation...," 1989.

Invited presentations

¥        ``Sonar waveform design for detection of elastic objects,ÕÕ 159th mtg. Acoust. Soc. Am., Baltimore, MD, Apr. 19-23, 2010.

¥        `Wavelets: A comparison with the spectrogram and other methods for time-frequency analysis,ÕÕ 159th mtg. Acoust. Soc. Am., Baltimore, MD, Apr. 19-23, 2010.

¥        ``Time-frequency and position-wavenumber acoustic signal analysis,ÕÕ 158th mtg. Acous. Soc. Am., San Antonio, TX, Oct. 26-30, 2009.

¥        ``A time-frequency approach for studying propagation effects on underwater sound,ÕÕ 158th mtg. Acous. Soc. Am., San Antonio, TX, Oct. 26-30, 2009.

¥        ÒNonstationary signal processing methods for channel characterization and propagation-invariant classification,Ó ONR Underwater Signal Processing Program Review, Seattle, WA, Aug. 4-6, 2009.

¥        ``Environmentally invariant features for classification of active sonar signals,ÕÕ 157th  mtg. Acous Soc Am, Portland, OR, May 18-22, 2009.

¥        ``Joint position/wave number and time/frequency features of signalsÕÕ 157th  mtg. Acous Soc Am, Portland, OR, May 18-22, 2009.

¥        ``Time-Frequency Approach and Approximation to Range-Dependent Pulse Propagation,ÕÕ Underwater Acoustic Signal Processing Workshop, Univ. Rhode Island, Alton Jones Campus, Oct. 14-16, 2009.

¥        ÒNonstationary signal processing methods for channel characterization and propagation-invariant classification,Ó ONR Underwater Signal Processing Program Review, Seattle, WA, Aug. 5-7, 2008.

¥         ÒA phase space approach to pulse propagation and classification,Ó Middleton meeting on classical, semi-classical and quantum noise, Princeton University, Nov. 2-3, 2007.

¥        ÒPropagation-invariant Classification,Ó Underwater Acoustic Signal Processing Workshop, Univ. Rhode Island, Alton Jones Campus, Oct. 17-19, 2007.

¥        ÒNonstationary signal processing methods for channel characterization and propagation-invariant classification,Ó ONR Underwater Signal Processing Program Review, Seattle, WA, Aug. 21-23, 2007.

¥        ÒWigner approximation for filtered random functions and wave propagation,Ó 153rd mtg. Acous Soc Am, SLC, June 4-8, 2007.

¥        ÒTime-frequency analysis and feature extraction for broadband mine classification,Ó Office of Naval Research, April 26, 2007.

¥        ÒEffect of filtering on the time-varying spectrum of a signal, with application to target recognition,Ó University of Washington, ONR Underwater Signal Processing Program Review, Seattle, WA, Aug. 23, 2006.

¥        ÒMethods and applications of time-varying spectral analysis,Ó The Ohio State University, April 28, 2006.

¥        ÒMethods and applications of time-varying spectral analysis,Ó University of Massachussetts at Amherst, April 5, 2006.

¥        ÒTime-frequency analysis, modeling and classification of nonstationary underwater signals,Ó Office of Naval Research, March 21, 2006.

¥        ÒWigner distribution approximation for filtered signals and waves,Ó 36th Winter Colloquium on the Physics of Quantum Electronics, Snowbird, UT, Jan. 6, 2006.

¥        ÒMethods for Nonstationary Signal Analysis and Classification,Ó Naval Research Laboratory, ONR Active Sonar Program Review, Aug. 31, 2005.

¥        ÒNew Approximations in Dispersive Wave Propagation,Ó Applied Physics Laboratory, University of Washington, Oct. 7, 2004

¥        ÒNew Approximations in Dispersive Wave Propagation,Ó Naval Undersea Warfare Center, Newport, RI, ONR Active Sonar Program Review, Aug. 2004; and MIT Lincoln Laboratory, ONR Passive Sonar Program Review, Sep. 2004.

¥        ÒMethods and Applications of Time-Frequency Analysis,Ó Temple University, April 2004.

¥        ÒModal features of underwater sound propagation that are invariant to dispersion,Ó Applied Physics Laboratory, Johns Hopkins University, Baltimore, MD, ONR Passive Sonar Program Review, Sep. 9-11, 2003.

¥        ÒLocal Characteristics of Dispersive Underwater Sound Propagation, with Application to Active Sonar Echoes,Ó Applied Physics Laboratory, Univ. of Washington, Seattle, WA, ONR Active Sonar Program Review, Aug. 19-21, 2003.

¥        ÒMethods and Applications of Time-Frequency Analysis,Ó Lehigh University, April 2003.

¥        "Dispersion and the Wigner distribution," The Wigner Symposium, New York, NY, May 2003.

¥        "Instantaneous frequency, quantum mechanical current, and phase-space distributions," 33rd Winter Colloquium on the Physics of Quantum Electronics, Snowbird, UT, Jan.  2003.

¥        "Local Spatial and Temporal Moments of Acoustic Signals and Classification of Impulsive-Source Sonar Signals," SPAWAR Systems Center, San Diego, CA, ONR Passive Sonar Program Review, Sep. 10-12, 2002.

¥        "Application of the Wigner distribution to shallow-water sound propagation," 32nd Winter Colloquium on The Physics of Quantum Electronics, Snowbird, Utah, Jan. 2002.

¥        "Analysis and characterization of nonstationary signals, with applications to experimental data," Applied Research Laboratory, University of Texas, Austin, TX, ONR Passive Sonar Program Review, Oct. 23-25, 2001.

¥        ÒInstantaneous Spectral Moments,Ó Dept. of Electrical Engineering, University of Washington, Seattle, WA, Oct. 9, 2001.

¥        ÒAdaptation and Habituation to Moving Scenes, and the Influence of Attentional Tasks,Ó Neurological Sciences Institute, OHSU, Beaverton, OR, Aug. 7, 2001.

¥        "Generalized Wigner Distribution Analysis of Human Balance" 31st Winter Colloquium on The Physics of Quantum Electronics, Snowbird, Utah, Jan. 7-11, 2001.

¥        "Instantaneous spectral moments," Naval Undersea Warfare Center, Newport, RI, ONR Passive Sonar Program Peer Review, Oct. 3-5, 2000.

¥        "Methods and Applications of Time-Frequency Analysis," Penn State University, Sep 28, 2000.

¥        "Applications of Time-Frequency Analysis," 139th Mtg. of the Acoustical Society of America, Atlanta, GA, May 30 - June 3, 2000.

¥        "Local values of generalized Wigner distributions," 30th Winter Colloquium on the Physics of Quantum Electronics, Snowbird, Utah, January 9-12, 2000.

¥        "Time-Frequency Distributions: A tutorial review," 138th Mtg. of the Acoustical Society of America, Columbus, OH, Nov. 1-5, 1999.

¥        "Positive Wigner-type distributions in signal analysis," 29th Winter Colloquium on the Physics of Quantum Electronics, Snowbird, Utah, January 3-6, 1999.

¥        "Maximum entropy time-frequency analysis," 136th Mtg. of the Acoustical Society of America, Norfolk, VA, Oct. 13, 1998.

¥        "Moments and transients," Naval Underwater Warfare Center, Newport, RI, July 9, 1998.

¥        "Multiwindow and maximum entropy methods in time-frequency analysis," Los Alamos National Lab, May 5, 1998."

¥        "Time-frequency analysis: New developments and applications," 2nd IEEE UK Symposium on Applications of Time-Frequency and Time-Scale Methods, Coventry, UK, Aug. 27-29, 1997.

¥        "Maximum entropy methods in time-frequency analysis, and time-varying frequencies of a signal," DOD, April 11, 1997.

¥        "Positive time-frequency distributions: Development and applications," ONR Workshop on Time-Frequency and Time-Scale Analysis, March 18-20, 1996.

¥        "Application of time-frequency analysis to the monitoring of machining processes," NSF/ONR Workshop on Signal Processing for Manufacturing and Machine Monitoring, March 13-15, 1996

¥        "Positive time-frequency distributions and their applications," NASA-Lewis Research Center, Aug. 11, 1995.

¥        "Positive time-frequency distributions and their applications," Ohio State University, May 30, 1995.

¥        "Time-frequency analysis of postural sway," 28th Annual Asilomar Conf. on Sigs., Syst. and Comps., Pacific Grove, CA, Oct. 31-Nov. 2, 1994.

¥        "Application of time-frequency analysis to postural sway," Brooks Air Force Base, Aug. 19, 1994.

¥        "Time-frequency energy density functions: Theory and synthesis," MIT Lincoln Labs, Jan. 26, 1993.

¥        "The short-time Fourier transform and beyond: A tutorial on time-frequency methods," IEEE Int. Symp. on Time-Frequency / Time-Scale Analysis, Victoria, B.C., Oct. 4-6, 1992.

¥        "Advanced time-frequency representations for speech processing," AT&T Bell Labs, May 20, 1992.

¥        "Advanced time-frequency representations for speech processing," European Speech Communication Association Workshop, Sheffield, England, April 7-9, 1992.

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updated January 17, 2011