Fourth International Workshop on Aeroelasticity, ULCA, Los Angeles, August 2003; (funded by NSF and NASA Dryden Center).  

13-th International Workshop on Dynamics and Control, Los Angeles, CA;  August, 2002; (funded by NSF);
Title of the talk: "Flutter in aircraft wing; its analysis and control".  
 

Georgetown University, Washington, DC; Conference on Control Theory of Partial Differential Equations; June, 2003.
Invited talk: "Mathematical problems arising in aircraft wing modeling".  
 

Illinois Institute of Technology, Chicago, IL; March, 2003;
Colloquium talk: "Flutter phenomenon and its mathematical analysis".
 

Air Force Institute of Technology, Dayton, OH; March, 2003;
Colloquium talk:  "Advances in flutter analysis in aircraft wing".
 

Third International Workshop on Aeroelasticity, UCLA, Los Angeles; August - September, 2002;(funded by NSF and NASA Dryden Center).
 

13-th International Workshop on Dynamics and Control, Los Angeles, CA; August, 2002;(funded by NSF);
Title of the talk: "Flutter in aircraft wing; its analysis and control".
 

International Workshop on Analytical and Numerical Methods in Spectral Theory; University of Cardiff, Gregynog Hall, England; July, 2002.
Title of the talk: "Spectral results on aircraft wing model in subsonic air flow."
 

Invited scientific tour and Colloquium addresses at five universities and Research Centers in Germany, June 2002.

• Dresden Technical University, Department of Mathematics, Institute of Analysis; Dresden; June 5-7.

• European Aeronautics Space Defence Company (EASD);  Munich;  June 8-9.

• Technical University of Aachen; Mechanical Engineering Department; Aachen; June 10-13.

• The University of Trier, Department of Mathematics; Trier.  June 14-17.

• Technical University of Braunschweig, Institute of Analysis and the Center of solid--fluid Interaction; Braunchschweig; June 18-20.
   

Texas PDE Conference; University of Texas at San Antonio; January 2002.
Title of the talk: ''Mathematical analysis of flutter phenomenon.''
 

NSF-CBMS Regional Research Conference:  Using Spectral Data to Solve Inverse Problems, University of TX  Pan-American; December 2001.
Title of the talk: ''Asymptotic and Spectral Results for Aircraft Wing Model in Subsonic Air Flow.''
 

University of Texas at Austin, Aeronautical Engineering Department; August, 2001.
Colloquium talk: ''Flutter control in aircraft wing in subsonic air flow''.
 

Second International Meeting on Semigroup of Operators and their Applications; Rio-de-Janeiro, Brazil; September, 2001; funded by NSF of USA and National Research Council of Brazil.
Title of talk: "Mathematical Analysis of an aircraft wing model. Application to flutter control
 

Second Workshop on Aeroelasticity, Los Angeles, UCLA; July, 2001.

Title of the first talk: "Asymptotic and Spectral Results for Nonselfadjoint Operators Generated by Coupled Euler-Bernoulli and  Timoshenko beam model."

Title of the second talk: "Asymptotic and Spectral Analysis of Aircraft Wing Model in Subsonic Airflow".
 

SIAM Control Conference; San Diego, CA; July 2001.
Title of the talk: "Spectral Asymptotics for aircraft wing model."
 

University of Texas at Dallas, Mathematics Department; March 2001.
Colloquium talk: "Mathematical problems in aircraft wing modelling."
 

11-th International Workshop on Dynamics and Control, Rio de Janeiro, Brazil;
October  2000; funded by the NSF of USA and National Research Council of Brazil.
Title of the talk: "Mathematical Analysis of aircraft wing model in subsonic air flow."
 

International Workshop of Aeroelasticity, UCLA, Los Angeles, CA;
 August 22-31, 2000; funded by NASA Dryden Flight Systems Center.
Two talks: "Recent results on flutter suppression problem".
 

3-rd International Conference of Nonlinear Problems in Aviation and Aerospace, Daytona Beach, FI.;  May 2000.
Title of the talk: "Asymptotic and spectral results on flutter suppression problem".
 

NSF - sponsored conference:  Advances in Control of Nonlinear Distributed Parameter Systems honoring 60th birthday of Prof. D.L. Russell; College Station, TX;  October '99.
Title of the talk:   "Spectral Asymptotics for aircraft wing model."
 

International Workshop on Analysis of Vibrating Systems, Calgary, Canada;  September '99.
Title of the talk: "Spectral Analysis of a system of two coupled beams with boundary dissipation."
 

NSF-CBMS Regional Research Conference: Mathematical Control Theory of Coupled Systems of Partial Differential Equations, Linkoln, NE; August, 1999.
Title of the talk: "Spectal analysis of a system of two coupled beams with boundary dissipation."
 

19th IFIP TC7 Conference on System Modelling and Optimization (IFIP-International Federation for Information Processing), Cambridge, England; July 1999.
Title of the talk: "Spectral operators generated by damped hyperbolic equations and their applications to control  problems".
 

23rd Annual SIAM/SEAS Conference, Knoxville, TN; March 1999.
Title of the Talk: "Control and Stabilization of flexible structures via the spectral decomposition method."
 

1st International Conference on Semigroup Theory and Its Applications, honoring life and work of Ralph S. Phillips, Newport Beach, CA; December 1998.
Title of the talk: "Spectral operators generated by damped hyperbolic equations and their applications to control and stabilization theory".
 

10th International Workshop on Dynamics and Control; University of Hannover, Germany, August 1998;
Title of the talk : "Asymptotic and Spectral Analysis of Timoshenko Beam Model; its Control and Stabilization."
 

5th International Symposium on Methods and Models in Automation and Robotics; Miedzyzdroje, Poland; August 1998;
Title of the talk : "Controllability of Timoshenko Beam Model".
 

University of California at Los Angeles, Electrical Engineering Department, July 1998;
Title of the talk:"Spectral Asymptotics of Coupled Timoshenko and Euler-Bernoulli Beams".
 

Two weeks invited visit to the Flight Systems Research Center of UCLA, Los Angeles; July '98.
 

2nd International Conference on Nonlinear Problems in Aviation and Aerospace; Daytona Beach, Florida, May 1998;
Title of the talk: "Asymptotic and Spectral Analysis of Timoshenko Beam Model".
 

University of California at Los Angeles, Electrical Engineering Department; September,1997;
Colloquium talk: "Riesz bases for boundary value problems."
 

International Conference on Dynamics and Control of Partial Differential Equations in honor of 60th birthday of John E. Lagnese Centro de Investigation de Mathematicas, November 1997. (Invited presentation)
Title of the talk : "Spectral operators generated by the Timoshenko beam model." (Session chair and speaker).
 

3rd Midwestern-Southeastern Atlantic Joint Conference on Differential Equations; November 1997.
Title of the talk : "Transformation Operators for a Class of Damped Hyperbolic Equations and Riesz bases."
 

15th IMACS (International Association for Mathematics and Computers in Simulation) World Congress on Scientific Computation, Modelling and Applied Mathematics; Berlin, Germany, August, 1997.
Special session : ``Control of Distributed Parameter Systems.''
 

18th IFIP (International Federation for Information Processing) TC7 Conference on System Modeling and Optimization; Detroit, Michigan; July 1997 (2 talks).
Special sessions: "Stability and stabilization.'' (Co-organizer and speaker),
                        "Distributed Parameter Systems.''
 

1st International ISAAC'97 (International Society for Analysis, Applications and Computations); University of Delaware, Newark, Delaware; June, 1997 (2 talks).
Special sessions : "Spectral and Scattering Theory."
                         "Wave Phenomena and Related Topics.""
 

Regional AMS Meeting #915; University of Tennessee at Chattanooga, Chattanooga, Tennessee; October, 1996 (2 talks).
Special sessions :  "Mathematical Aspects of Wave Propagation Phenomena.",
                          "Inverse Spectral Problems for Differential Operators.''
 

Regional AMS Meeting #916; University of Missouri, Columbia; November, 1996.
Special session: Partial Differential Equations and Mathematical Physics."
 

AMS-IMS-SIAM Joint Summer Research Conference, "Optimization Methods in PDE"; Mount Holyoke College, Massachusetts; June, 1996.
 

1st International Conference on Nonlinear Problems in Aviation and Aerospace;Daytona Beach, Florida, May, 1996.
 

Joint Mathematical Meetings of AMS, MAA and AWM. Special session on Mathematical Physics; Orlando, Florida; January, 1996.
 

Colloquium at the Department of Applied Mathematics; Rice University, Houston, TX; October, 1993.
Title of the talk : "Resonances and resonance states in the problem of scattering of acoustical waves by a nonhomogeneous medium."
 

International Conference "The Schrodinger equation and its classical counterparts"; Oberwolfach (West Germany); May, 1990.
Title of the talk: "Discrete spectrum of a Schrodinger operator with Coulomb potential  perturbed on a compact set."
 

Seminar at the Department of Mathematics at California Institute of Technology, Pasadena, CA; April,1990
Title of theTalk : "Discrete Spectrum of a Radial Schrodinger operator with long-range potential."