PRESENTATIONS, INVITED LECTURES, & SEMINARS

• "The Axisymmetric Response of a Fluid-Filled Spherical Shell to a Local Radial Impulse - A Model for Head Injury," 1969 ASME Biomechanics and Human Factors Conference, ASME Paper No. 69-BHF-1.
• "BIOMECHANICS, Its Scope, History and Some Problems of Mechanics Applied to Biology," University wide lecture given at the Middle East Technical University, May 1970.
• "A Mathematical Model to Determine the Brain Damage when the Human Head is Subjected to Impulsive Loads," 1970 Symposium on Biodynamical Models and their Applications, Paper No. 36.
• "The Knee Joint Mechanics; Guidelines for High Tibial Osteotomy in Osteoarthritis," Invited Lecture for the orthopaedic surgeon interns, The Ohio State University School of Medicine, May 31, 1975.
• Biomechanics of Knee Joint and Related Problems," Invited lecture given at the Middle East Technical University, Ankara - Turkey, Dec. 1975.
• "Osteoarthritis and Tibial Osteotomy," Invited lecture given at the Middle East Technical University, Ankara - Turkey, Dec. 1975.
• "Strain Energy Density Response of a Spherical Shell to an External Pulse; A Simple Model for Skull Fracture," presented at the Multidisciplinary Mechanics Session of the Eight Southeastern Conference on Theoretical and Applied Mechanics, April 29-30, 1976.
• "Biomechanics of the Knee Joint; Report on Recent Research and Developments on Various Knee Arthroplasty Devices," Invited lecture for the Orthopaedic Surgeon Interns, The Ohio State University School of Medicine, May 29, 1976.
• "Biomechanics," Invited keynote speaker for the joint meeting of Mid-Ohio Section of ASME and the OSU Student Chapter, March 31, 1977.
• "On the Passive Resistive Moments of the Major Human Joints," Presented at the NATO Advanced Study Institute on Progress in Biomechanics, July 10-11, 1978.
• "Biomechanics of Major Articulating Joints," Invited lecture given at the Middle East Technical University, Ankara, Turkey, Nov. 23, 1978.
• "Modeling of Human Joint Structures," Invited presentation at the Annual Review of Air Force Sponsored Basic Research in Environmental and Acceleration Physiology, St. Louis University Medical Center, St. Louis, Missouri, 2-4 October, 1979.
• "Measurement of Resistive Torques in Major Human Joints," Invited seminar at the Virginia Polytechnic Institute and State University, Blacksburg, Virginia, November 2, 1979.
• "The Axisymmetric Response of a Fluid-Filled Spherical Shell to a Local Radial Impulse," Invited seminar at the Virginia Polytechnic Institute and State University, Blacksburg, Virginia, December 10, 1979.
• "Measurement of Resistive Torques in Major Human Joints," Colloquium at Clemson University, Clemson, South Carolina, January 14, 1980.
• "Measurement of Resistive Torques in Major Human Joints," Colloquium at Louisiana State University Medical Center, Shreveport, Louisiana, January 17, 1980.
• "Biomechanics of Head Injury," Special Lecture at the College of Engineering of Boston University, Boston, Massachusetts, April 24, 1980.
• "Kinematic and Force Data Collection in Biomechanics by a Sonic Digitizing Technique," Invited seminar at the Middle East Technical University, Ankara, Turkey, July 13, 1981.
• "Biomechanics of Major Articulating Joints," Invited seminar at the Center for Biomedical Engineering, Indian Institute of Technology, New Delhi, India, July 18, 1981.
• "The Biodynamic Modeling of Major Human Joints," Invited seminar at the Biomedical Engineering Department of Duke University, Durham, North Carolina, October 13, 1982.
• "Scientific Basis of Biomechanics and its Application to Sports Sciences," Invited lecture at the Middle East Technical University, Ankara, Turkey, December 22, 1982.
• "Dynamic Modeling of Human Articulating Joints," Invited seminar at the Hacettepe University, Ankara, Turkey, December 23, 1982.
• "Passive and Active Resistive Force Characteristics in Major Human Joints," Invited seminar at the Hacettepe University, Ankara, Turkey, December 23, 1982.
• "Dynamic Modeling of Human Articulating Joints," Invited Lecture at the NATO Advanced Study Institute on Biomechanics of Normal and Pathological Human Articulating Joints," Sintra-Estoril, Portugal, June 20-July 1, 1983.
• "Passive and Active Resistive Force Characteristics in Major Human Joints," Invited Lecture at the NATO Advanced Study Institute on Biomechanics of Normal and Pathological Human Articulating Joints, Sintra-Estoril, Portugal, June 20-July 1, 1983.
• "Some Aspects of Head Injury Modeling - Early Developments" BORELLI AWARD Lecture, 9th Annual Meeting of American Society of Biomechanics, Ann Arbor, Michigan, October 2-4, 1985.
• "Biomechanics; Its Scope, History, Classification of Present Research Topics, and Some Topics Related to Head Injury and Joint Biomechanics" Invited Lecture at the King Saud University, Riyadh, Saudi Arabia, April 7, 1987.
• "Kinematics of Human Shoulder Motion" Invited Lecture at the First World Congress of Biomechanics, San Diego, August 30-September 4, 1990.
• "On the Kinematics of Human Shoulder Motion" Seminar at the Engineering Mechanics Department of The Ohio State University, Columbus, Ohio, February 20, 1991.
• "On the Applicability of the Classical Impact Theory to the Dynamics of Human Joints," Seminar at the Engineering Mechanics Department of The Ohio State University, Columbus, Ohio, September 30, 1992.
• "Biomechanics; Present and Future Trends," Invited Seminar at the College of Engineering of the Middle East Technical University, Ankara, Turkey, August 9, 1993.
• "Biokinematics of Human Shoulder Complex," Invited Keynote Lecture at the VIIIth Turkish National Congress of Mechanics, Antalya, Turkey, September 7, 1993.
• "Biomechanics of Human Shoulder," Invited Lecture at the Faculty of Mechanical Engineering of the Istanbul Technical University, Istanbul, Turkey, September 13, 1993.
• "Kinematics of Human Shoulder Motion," Invited Colloquium at the School of Engineering and Applied Sciences of Southern Methodist University, Dallas, Texas, March 21, 1994.
• "Biomechanics: Historical Background and Review of Research Areas," Phi Kapp Phi Scholar of the Year presentation (April 21, 1999).
• "EC 2000 Overview and Our Experience,"  Workshop Distinguished speaker at the Workshop on Global Transdisciplinary Education, Research and Training of the Society for Design and Process Science, Kusadasi, Turkey, Sept. 3-6, 2000.
• Invited Keynote Lecture on "Forensic Biomechanics" at the XVIII International Society of Biomechanics Congress in Zurich, Switzerland, July 8-13, 2001.
• Invited lecture on "Biomechanics in the Court of Law" at the BIOMED8 Conference, Ankara, Turkey, September 5-8, 2001.
• Invited Plenary Session Lecture on "Forensic Biomechanics - Transdisciplinary Approach in the Court of Law" at the Sixth Biennial World Conference on INTEGRATED DESIGN & PROCESS TECHNOLOGY, Pasadena, CA, June 23-28, 2002.
• Invited Special Presentation on "Forensic Biomechanics" at Mechanical Engineering Seminars Series at The Ohio State University, Columbus, Ohio, May 29, 2003. 
• Invited lecture on " Biodynamic Modeling of Human Articulating Joints" at BIOMED 2003, 10th Biomedical Science and Technology Symposium, TR Northern Cyprus, October 10-12, 2003.

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