Roger V. Gonzalez, Ph.D., P.E.
LeTourneau University
Longview, TX 75602

Professor, Mechanical & Biomedical Engineering
     Director, Biomedical Engineering
Executive Director and Founder, LEGS (LeTourneau Engineering Global Solutions)


Phone: (903) 233-3906
Fax: (903) 233-3901
E-Mail: RogerGonzalez@letu.edu
Office: Glaske Engineering Center, Rm 0119

Roger V. Gonzalez - Publications

Peer-Reviewed Journal Articles

Dorman, D., Warren, R. and Gonzalez, R.V. (2010) Elbow and Wrist Muscle Fiber Operating Ranges Throughout the Range of Motion for Flexion-Extension and Pronation-Supination. Journal of Biomechanics, (in preparation)

Ramsay, J., Hunter, B.V., and Gonzalez, R.V. (2009) Muscle Moment Arm and Normalized Moment Contributions as Reference Data for Musculoskeletal Elbow and Wrist Joint Models. Journal of Biomechanics, 42(4): 463-73

Shull, J, Lopez, J, Gonzalez, R.V. (2006) Real-time EMG- and Haptic- Teleoperated Robotic System for Motor Control Analysis Journal of Neuroscience Methods, 151(2):194-9.

Rask, M.R, Barr, R.E., and Gonzalez, R.V. (2004) Genetically-Designed Neural Networks for Error Reduction in an Optimized Biomechanical Model of the Human Elbow Joint Complex. Computer Methods in Biomechanics and Biomedical Engineering, 7(1), pp. 43-50.

Manal, K., Gonzalez, R.V., Lloyd, D.G., and Buchanan, T.S.  A real-time EMG-Driven virtual arm. (2002) Computers in Biology and Medicine 32: 25-36.

Nieuwenhuis M.K., Gonzalez R.V., van der Net J., Kuis W., Beek F.J.A., Buchanan T.S., Helders P.J.M. (2001) The role of the forearm muscles related to wrist malalignment in juvenile chronic arthritis. Advances of Physiotherapy Vol. 3(3), pp. 108-19.

Gonzalez, R.V., Abraham, L.D., Barr, R.E., and Buchanan, T.S. (1999) Muscle activity in rapid multi-degree-of-freedom elbow movements: solutions from a musculoskeletal model. J. of Biol. Cybernetics  Vol. 80(5), pp. 357-67.

Gonzalez, R.V., Buchanan, T.S., and Delp, S.L. (1997) Interplay of muscle moment arms and architecture in the human wrist. J. Biomechanics  Vol. 30(7), pp. 705-12.

Lester, W.T., Gonzalez, R.V., Fernández, B., and Barr, R.E. (1997) A neural network approach to electromyographic signal processing for a motor control task. ASME J. Dynamic Systems, Measurement, and Control  Vol. 119.

Gonzalez, R.V., Hutchins, E.L., Barr, R.E., and Abraham, L.D. (1996) Development and evaluation of a musculoskeletal model of the elbow joint complex. ASME J. Biomechanical Engineering Vol. 118(1), pp. 32-40.

Hutchins, E.L., Gonzalez, R.V., and Barr, R.E. (1993) Comparison of experimental and analytical torque-angle relationships of the human elbow joint complex. Biomed Sci Instrum.;29:17-24.

Gonzalez, R.V., Andritsos, M.J., Barr, R.E., and Abraham, L.D. (1993) Comparison of Experimental and Predicted Activation Patterns in Ballistic Elbow Joint Movements. Biomed Sci Instrum. 29:9-16.

Peer-Reviewed Conference Proceedings

Ayers, S.R., Gonzalez, R.V., and Rispin K. (2010) Development of a Locally Manufactured Polycentric Prosthetic Knee for the Developing World. 19th National Conference of Orthodic Prosthetic Association of India (OPAI 2010), Delhi, India. Feb, 2010.

Husk, C., Lew, S., Schufeldt, T., and Gonzalez, R.V. (2010) Preliminary development of the LEGS functional parameters questionnaire. 13th World Congress of the Int Soc for P&O, Leipzig, Germany, May, 2010.

 

Husk, C., Lew, S., Schufeldt, T., and Gonzalez, R.V. (2010) Functional comparison of the LEGS M1 knee to commonly available developing world alternatives. 13th World Congress of the Int Soc for P&O, Leipzig, Germany, May, 2010.

 

Ayers, S.R., and Gonzalez, R.V. (2010) Implementation of a new polycentric knee technology in the developing world. 13th World Congress of the Int Soc for P&O, Leipzig, Germany, May, 2010.

 

Ayers, S.R., and Gonzalez, R.V. (2010) Implementation of local manufacturing for the LEGS M1 knee in the developing world. 13th World Congress of the Int Soc for P&O, Leipzig, Germany, May, 2010.

 

Leatherwood K, Jacobs W, Rispin K, Gonzalez R.V. (2009) Outcomes measures for the Validation of the LEGS M1 Knee. Ann Mtg of the Texas Chapter of the American College of Sports Medicine, Tyler, TX, Feb 2009

 

Dorman, D. and Gonzalez, R.V. (2009) Wrist muscle moment arms for a musculoskeletal model as functions of two joint angles. 26th Annual Houston Conf on Biomedical Engineering Research, Houston, TX, Mar, 2009.

 

Wert, D.S. and Gonzalez, R.V. (2009) Specimen moment arms of wrist muscles over two degrees of freedom. 26th Annual Houston Conf on Biomedical Engineering Research, Houston, TX, Mar, 2009.

 

Simila, M., Szelistowski, M., and Gonzalez, R.V. (2009) FEA estimated dynamic contact pressure in the tibio-femoral joint. 26th Annual Houston Conf on Biomedical Engineering Research, Houston, TX, Mar, 2009.

 

Rowe, J. and Gonzalez, R.V. (2009) In-vitro dynamic tibiofemoral contact pressure. 26th Annual Houston Conf on Biomedical Engineering Research, Houston, TX, Mar, 2009.

 

Godley, R. and Gonzalez, R.V. (2009) In-vitro knee ligament strain during gait. 26th Annual Houston Conf on Biomedical Engineering Research, Houston, TX, Mar, 2009.

 

Bissette, J.B., Leatherwood, K.M., Rispin, K.L. and Gonzalez, R.V. (2009) Collection of amputee gait data for validation of LEGS M1 knee design. 26th Annual Houston Conf on Biomedical Engineering Research, Houston, TX, Mar, 2009.

 

Bergren, N.A., Terrell, K.R., Rispin, K.L. and Gonzalez, R.V. (2009) Using orthopedic suturing techniques for muscles attachment in load application apparatus for cadaveric knee. 26th Annual Houston Conf on Biomedical Engineering Research, Houston, TX, Mar, 2009.

 

Leatherwood K.M., Rispin, K.L. and Gonzalez, R.V. (2009) Collection of comparative data for amputee energy cost and subjective input on functional parameters for validation of the LEGS M1 knee design. 26th Annual Houston Conf on Biomedical Engineering Research, Houston, TX, Mar, 2009.

 

Godley, R. and Gonzalez, R.V. (2008) Control algorithm to quantify intersegmental parameters in a cadaver knee specimen. 25th Annual Houston Conf on Biomedical Engineering Research, Houston, TX, Feb, 2008.

 

Sumrall, K.L., Rispin, K.L., and Gonzalez, R.V. (2008) Preserved cadaver dissections for validation of computational models of tibio-femoral joint. 25th Annual Houston Conf on Biomedical Engineering Research, Houston, TX, Feb, 2008.

 

Szelistowski, M. and Gonzalez, R.V. (2008) Dynamic contact pressure computation in the tibio-femoral joint. 25th Annual Houston Conf on Biomedical Engineering Research, Houston, TX, Feb, 2008.

 

Terrall, K.R., Harper, M.L., Rispin, K.L., Ayers, S., and Gonzalez, R.V. (2008) Procuring relevant soft tissue data for use in computational modeling. 25th Annual Houston Conf on Biomedical Engineering Research, Houston, TX, Feb, 2008.

 

Ramsay, J.W., and Gonzalez, R.V. (2008) Model-based elbow and wrist moment arms coefficients. 25th Annual Houston Conf on Biomedical Engineering Research, Houston, TX, Feb, 2008.

 

Dittenber, D., Ayers, S.A. and Gonzalez R.V. (2008) Innovative Approaches to Providing Developing Countries with Appropriate Lower-Limb Prosthetic Technology. NCIIA 12th Annual Meeting, Dallas TX, Mar 2008.

 

Green, N., and Gonzalez, R.V. (2007) Prospects for collaboration between LeTourneau University and the University of Western Australia. 2007 NSF Grantee Conference on International Research and Engineering in Education, Purdue University, Oct. 2007.

 

Gonzalez, R.V. and Rispin, K. L (2007) International engineering education: a case study in working in low-income countries. ABET Annual Meeting -The Global Workforce: The Future of Technological Education, Incline Village, NV, Nov, 2007. Invited Lecture

 

Green, N., and Gonzalez, R.V. (2007) A novel elastic foundation contact diction algorithm for use in a six degree of freedom knee model,  American Society of Biomechanics Annual Conference, Stanford, CA, Aug, 2007.

Ramsay, J., and Gonzalez, R.V. (2007) Effect of wrist and forearm architecture on wrist radial-ulnar deviation and forearm pronation-supination moment,  American Society of Biomechanics Annual Conference, Stanford, CA, Aug, 2007.

Gonzalez, R.V., Rispin, K.L., Moran, M.K., and Ayers, S.R., and (2007) An R&D strategy to offer a high-quality and low-cost above knee prosthesis in the developing world. 12th World Congress of the Int Soc for P&O, Vancouver, CA, Jul, 2007.

Vaughan, M., Ayers, S.R., and Gonzalez, R.V. (2007) Roll-over shape assessment of prosthetic feet for developing nations, 12th World Congress of the International Society of Prosthetics and Orthotics, Vancouver, Canada, July 2007

Ayers, S.R., Gonzalez, R.V., and Palmer, J.D (2007) Development of a low-cost polycentric knee for trans-femoral amputees in developing nations. 12th World Congress of the Int Soc for P&O, Vancouver, CA, Jul, 2007.

Wisher. M., and Gonzalez, R.V. (2007) Isometric and isokinetic moments in wrist radial-ulnar deviation and forearm pronation-supination. 24th Annual Houston Conf on Biomedical Engineering Research, Houston, TX, Feb, 2007.

Bowen, J. and Gonzalez, R.V. (2007) A device designed to simulate knee motion with ground reaction forces. 24th Annual Houston Conference on Biomedical Engineering Research, Houston, TX, Feb, 2007.

Lopez, J., Field, D., Cronk, S., and Gonzalez, R.V. (2007) Feedback systems optimization to improve user learning and adaptation in a haptic task. 24th Ann Houston Conf on Biomed Engineering Research, Houston, TX, Feb, 2007.

Field, D., Lopez, J., and Gonzalez, R.V. (2007) Complexity interference during learning and adaptation in a haptic task.  24th Annual Houston Conference on Biomedical Engineering Research, Houston, TX, Feb, 2007.

Green, N., and Gonzalez, R.V. (2007) Dynamic contact pressure computation in the tibio-femoral joint.  24th Annual Houston Conference on Biomedical Engineering Research, Houston, TX, Feb, 2007.

Ayers, S.R., Fulginiti, L.A., Gonzalez, R.V, and Rispin, K. (2007) Evaluation of a simplified field system for gait analysis of transfemoral amputees in a developing world context. 24th Annual Houston Conference on Biomedical Engineering Research, Houston, TX, Feb, 2007.

Green, M.G., Hellmuth, T., Leiffer, P.R., Gonzalez, R.V., and Ayers, S.V. (2007) Effectively implementing an interdisciplinary senior design experience: A case study and conclusions. ASEE Annual Conference, Honolulu, HI, June, 2007.

Gonzalez, R.V., Ayers, S., and Rispin, K. (2006) Development of a low-cost, easily manufactured knee technology with improved functionality outcomes for trans-femoral amputees in developing nations. CIR-RERC State of the Science Conference for Improved Technology Access for Landmine Survivors, Chicago, IL, Aug, 2006.

Lopez, J.M. and Gonzalez, R.V. (2006) Human adaptation in a simple bilateral task during simultaneous use of disparate control systems. Biomedical Engineering Society Annual Meeting, Chicago, IL, Oct, 2006.

Gonzalez, R.V. and Kobliska, J.A. (2006) A light-weight device to measure upper-extremity kinematics. J of Biomechanics (39 / S1) S75; 5th World Congress of Biomechanics, Munich, Germany, Aug, 2006.

Gonzalez, R.V., Vaughan, M., and Ayers, S. (2006) Roll-over characteristics of prosthetic feet used in developing nations. J of Biomechanics (39 / S1) S551;5th World Congress of Biomechanics, Munich, Germany, Aug, 2006.

Ayers, S., Gonzalez, R.V., and Minelga, E (2006) Development of a low-cost, easily manufactured knee technology with improved functionality outcomes for trans-femoral amputees in developing nations. J of Biomechanics (39 / S1) S500;5th World Congress of Biomechanics, Munich, Germany, Aug, 2006.

Leiffer, P.R., Gonzalez, R.V., and Hellmuth, T. (2006) Interdisciplinary design teams – lessons learned by experience. ASEE Annual Conference, Chicago, IL, June, 2006.

Vaughan, M., and Gonzalez, R.V. (2006) Roll-over shapes of prosthetic feet commonly used in developing nations. 23rd Annual Houston Conference on Biomedical Engineering Research, Houston, TX, Feb, 2006.

Kobliska, J.A., Nielson, J.O., and Gonzalez, R.V. (2006) Direct measurement of upper-extremity kinematics via a lightweight device.  23rd Annual Houston Conference on Biomedical Engineering Research, Houston, TX, Feb, 2006.

Shull, P.B. and Gonzalez, R.V. (2005) Bimanual motor control: biological and robotic system learning via simultaneous movement requirements. 20th Congress of the International Society of Biomechanics, Cleveland, OH, Aug, 2005.

Green, M.G., Gonzalez, R.V., Wood, K.L., (2005) “Engineering Research Applied to Third World Needs: Case Studies of Applied and Fundamental Work,” Contributed Talk, 60th Annual American Scientific Affiliation Conference, Grantham, PA, August 2005.

Leiffer, P.R., Graff, R.W., and Gonzalez, R.V. (2005) Five Curriculum Tools to Enhance Interdisciplinary Teamwork. ASEE Annual Conference, Portland, OR, June, 2005.

Ness, K.M., and Gonzalez, R.V. (2005) Engineering design of lower extremity prosthetic for high ambulation patients in developing nations. 22nd Annual Houston Conference on Biomedical Engineering Research, Houston, TX, Feb, 2005.

Shull, P.B., and Gonzalez, R.V. (2005) A haptic robotic assessment device to study human learning and adaptation. 22nd Annual Houston Conference on Biomedical Engineering Research, Houston, TX, Feb, 2005. Best Presentation in Biorobotics

Hunt, B.V. and Gonzalez, R.V. (2004) Using musculoskeletal properties to develop a “normalized potential moment contribution index” for individual arm muscles. ASME National Congress, Anaheim, CA, Nov, 2004.

Gonzalez, R.V., Leiffer, P.R., and Lopez, J. (2004) Is a successful research laboratory possible with under-graduates alone? ASEE Annual Conference, Salt Lake City, Utah, June, 2004. Nominated for Best Paper

Leiffer, P.R., and Gonzalez, R.V. (2004) Development of a BSE concentration in Biomedical Engineering. ASEE Annual Conference, Salt Lake City, Utah, June, 2004.

Hunt, B.V. and Gonzalez, R.V. (2004) Moment arm verification of a computational musculoskeletal arm model. 21st Annual Houston Conference on Biomedical Engineering Research, Houston, TX, Feb, 2004.

Ness, K., Martin, P. and Gonzalez, R.V. (2004a) Using Motion analysis and EMG to assess arm motion. 21st Annual Houston Conference on Biomedical Engineering Research, Houston, TX, Feb, 2004.

Plymale, S. and Gonzalez, R.V. (2004) Fuzzy control of an intelligent prosthetic arm at the elbow joint complex. 21st Annual Houston Conference on Biomedical Engineering Research, Houston, TX, Feb, 2004.

Webb, J.D. and Gonzalez, R.V. (2003) A Three Dimensional Forward Dynamic Model of a Human Knee for Determining Ligament Forces. ASME National Congress, Washington, DC, Nov, 2003.

Gardinier, J., and Gonzalez, R.V. (2003) Pronation-Supination Moment Arms in the Human Forearm.  ASME Summer Bioengng Conf, Key Biscayne, FL, June, 2003.

Kirkendall, A.L., Lopez, J.M., and Gonzalez, R.V. (2002) A kinematic analysis of an ACL deficient knee. ASME National Congress, New Orleans, LA, Nov, 2002. 1st Place Undergraduate Student Paper Award

Gonzalez, R.V. and Leiffer, P.R. (2002) Undergraduate education-research with biomedical engineering laboratories. ASEE Annual Conference, Montreal, CANADA, June, 2002.

Leiffer, P.R., and Gonzalez, R.V. (2002) Development of modules and labs for “Biomedical engineering across the curriculum.” ASEE Annual Conference, Montreal, CANADA, June, 2002.

Gonzalez, R.V. (2001) BME Undergraduate design projects using various engineering majors. ASEE Annual Conference, Albuquerque, NM, June, 2001.

Buchanan TS, Manal K, Shen X, Lloyd DG, and Gonzalez RV (2000): The virtual arm: estimating joint moments using an EMG-driven model. Proc Europ Soc Biomech 12: 93.

Rask, J.M.R., Gonzalez, R.V., and Buchanan, T.S. (1999) Servo-motor control of human arm kinematics in virtual reality modeling. ASME Summer Bioengng Conf, Big Sky, MT, June, 1999.

Buchanan TS, Cheng J-Y, Shen X, Gonzalez RV, and Manal K (1999) The virtual arm: a biologically-driven musculoskeletal model of the upper extremity. ASME Summer Bioengng Conf. Big Sky, MT, June, 1999.

Gonzalez, R.V. (1999) Active learning: using students within the lecture process. ASEE Gulf Southwest Conference, Dallas, TX, March, 1999.

Gonzalez, R.V., and Peterson, E. (1999) Biomedical research projects in senior design. ASEE Gulf Southwest Conference, Dallas, TX, March, 1999.

Gonzalez, R.V., Barr, R.E., and Abraham, L.D. (1998) A method for driving a dynamic musculoskeletal model using processed electromyographic data. 17th Southern Biomedical Engrg Conf, San Antonio, TX, Feb, 1998.

Gonzalez, R.V., and Lee, C. (1998) Smart material as artificial muscles: A quantitative performance study of polyacrylonitrile fibers. 17th Southern Biomedical Engrg Conf, San Antonio, TX, Feb, 1998.

Gonzalez, R.V., and Thielman, J.L. (1998) Development of a physical model of the human elbow joint using polyacrylonitrile fibers. SPIE’s 5th Intl Symp on Smart Structures and Mats, San Diego, CA, March, 1998.

Gonzalez, R.V., and Lee, C. (1998) A quantitative force comparison of polyacrylonitrile fibers with skeletal muscle. SPIE’s 5th Intl Symp on Smart Structures and Mats, San Diego, CA, March, 1998.

Besier, T.F., Lloyd, D.G., Buchanan, T.S., and Gonzalez, R.V. (1998) Development of an EMG-driven musculoskeletal model to estimate human joint moments. Proc. 2nd Australian Biomechanics Conference, Auckland, New Zealand, January, 1998.

Nieuwenhuis MK, Gonzalez RV, van der Net J, Kuis W, Buchanan TS, Helders PJM. (1997) Role of the forearm muscles related to wrist malalignment in juvenile chronic arthritis. Proceedings Pediatric Physiotherapy, 72-73.

Gonzalez, R., Bock H., Collison G., Lee C., Smokowicz C., Thielman J. (1997) Artificial muscles across the human elbow: A performance study of polyacrylonitrile fibers. American Society of Biomechanics, Clemson, SC, September, 1997.

Buchanan, T.S., Lloyd, D.G., Besier, T., and Gonzalez, R.V. (1997) Development of EMG-driven musculoskeletal models for estimation of human joint moments. Int Soc Biomech, 16:330, 1997.

Lloyd, D.G., Gonzalez, R.V., and Buchanan, T.S. (1996) A general EMG-driven musculoskeletal model for prediction of human joint moments. Australian Conf of Science and Medicine in Sport, Canberra, Australia, 236-237

Buchanan, T.S., Gonzalez, R.V., and Lloyd, D.G. (1996) Development of EMG-driven musculoskeletal models for estimation of human joint torques. Proc IEEE Engng Med Biol 18, 1996.

Gonzalez, R.V., Nieuwenhuis, M.K., Helders, P.J.M., and Buchanan, T.S. (1996) Estimated effects of carpal malalignment in juvenile rheumatoid arthritis on wrist joint moments. American Society of Biomechanics, Atlanta, GA, October 1996. Vol. 20:161-162.

Gonzalez, R.V., Abraham, L.D., Barr, R.E., and Buchanan, T.S. (1995) Muscle coordination in elbow joint complex movements. American Society of Biomechanics, Stanford, CA, August 1995.

Gonzalez, R.V., Delp, S.L., Grierson, A.E., and Buchanan, T.S. (1995) Interplay of musculoskeletal geometry and muscle architecture in the human wrist. American Society of Biomechanics, Stanford, CA, August 1995.

Roberson, D.J., Barr, R.E., and Gonzalez, R.V. (1994) Preconditioning electromyographic data for an upper extremity model using neural networks. Proc. of the 1994 IEEE Inter. Conf. on Sys., Man, and Cyber., San Antonio, TX, Oct. 1994. pp. 969-974

Gonzalez, R.V., Barr, R.E., and Abraham, L.D. (1994) A musculoskeletal model of the elbow joint complex. ASME Winter Annual Mtg , Chicago, IL.

Lester, W.T., Fernández, B., Gonzalez, R.V., and Barr, R.E. (1994) A neural network approach to electromyographic signal processing for a motor control task. ASME American Control Conference, Baltimore, MD.

Gonzalez, R.V., Micallef, D.M., Barr, R.E., and Abraham, L.D. (1991) Prediction of muscle force patterns in elbow flexion / extension using mathematical modeling and electromyography. Proc. of the 10th Southern Biomedical Eng. Conf.,  Atlanta, Georgia, October 1991.

Wood, S.M., Barr, R.E., Abraham, L.D., and Gonzalez, R.V. (1990) Computer graphics modeling of the musculoskeletal system of the human arm. Proc. of the 12th Ann. Conf. of the IEEE Engineering in Med. and Biol. Soc.,  Philadelphia, PA, November 1990.

Undergraduate & Advisor Conference Presentations and Posters

Gonzalez, R.V. and Kobliska, J.A. (2006) A light-weight device to measure upper-extremity kinematics. ASME Student Regional Conference, Fayetteville, AR, Mar, 2006.

Vaughan, M., and Gonzalez, R.V. (2006) Roll-over Shapes: Common Prosthetic Feet used in Developing Countries and Their Roll-over shapes. ASME Student Regional Conference, Fayetteville, AR, Mar, 2006.

Ness, K., and Gonzalez, R.V. (2005) Engineering Design of Lower Extremity Prosthetic for High Ambulation Patients in Developing Nations. ASME Student Regional Conference, Lubbock, TX, Mar, 2005. 2nd Place Presentation

Minelga, E., and Gonzalez, R.V. (2005) Prosthesis design for developing nations. ASME Student Regional Conference, Lubbock, TX, Mar, 2005. 1st Place Poster

Plymale, S., and Gonzalez, R.V. (2004) An EMG-Driven Fuzzy Logic Controller of a Mechanical Arm. ASME National Congress, Anaheim, CA, Nov, 2004. 1st Place Presentation – National Award

Plymale, S., and Gonzalez, R.V. (2004) An EMG-Driven Fuzzy Logic Controller of a Mechanical Arm. ASME Student Regional Conference, Longview, TX, March, 2004. 1st Place Presentation & Best Technical

Ness, K., and Gonzalez, R.V. (2004) Intelligent Prosthetic Arm: Quantifying Arm Movement. ASME Student Regional Conference, Longview, TX, March, 2004.

Matthews, M., and Gonzalez, R.V. (2004) Neuromuscular Adaptation of Human Arm Movements. ASME Student Regional Conference, Longview, TX, March, 2004. 2nd Place Poster

Bassett, D., and Gonzalez, R.V. (2003) Robotic Validation of a Computational Knee Model. ASME National Congress, Washington DC, Nov, 2003.

Bassett, D., and Gonzalez, R.V. (2003) Robotic Validation of a Computational Knee Model. ASME Student Regional Conference, Houston, TX, March, 2003. 1st Place Presentation & Best Technical

Lockhart, D., Downing, E., and Gonzalez, R.V. (2003) Three Dimensional Model for Determining Ligament Forces. ASME Student Regional Conference, Houston, TX, March, 2003.

Webb, J., Cooper, J., and Gonzalez, R.V. (2003) Utilizing Robotic Manipulation in Cadaver Biomechanical Research. ASME Student Regional Conference, Houston, TX, March, 2003

Kirkendall, A.L., and Gonzalez, R.V. (2002) A kinematic analysis of an ACL deficient knee. ASME Student Regional Conference, Kingsville, TX, March, 2002. 1st Place Presentation & Best Technical

Lopez, J.M., Kirkendall, A.L., and Gonzalez, R.V. (2002) A kinematic analysis of an ACL deficient knee. ASME Student Regional Conference, Kingsville, TX, March, 2002. 1st Place Poster

Slager, J, and Gonzalez, R.V. (2001) Next Generation Prosthetic. ASME National Congress, New York, NY, Nov, 2001.

Slager, J, and Gonzalez, R.V. (2001) Next Generation Prosthetic. ASME Student Regional Conference, Tulsa, OK, March 2001. 1st Place Presentation & Best Technical

Johnston, J., and Gonzalez, R.V. (2001) Neuromuscular-Based Control of a Prosthetic Limb. ASME Student Regional Conference, Tulsa, OK, March 2001.

Jeffers, J., and Gonzalez, R.V. (2001) Analysis of Muscular Activation in the Human Arm During Static and Dynamic Exertion. ASME Student Regional Conference, Tulsa, OK, March 2001.

Hvass, P, and Gonzalez, R.V. (2000) The intelligent prosthetic arm. ASME National Congress, Orlando, FL, Nov, 2000.

Hvass, P, and Gonzalez, R.V. (2000) The intelligent prosthetic arm. ASME Student Regional Conference, Lafayette, LA, March 2000. 1st Place Presentation & Best Technical

Brodine, M, and Gonzalez, R.V. (2000) Modeling neuromuscular control in a pneumatic prosthetic limb. ASME Student Regional Conference, Lafayette, LA, March 2000.

Trammell, M, and Gonzalez, R.V. (2000) Analysis of Pneumatic Muscles for Prosthetic Limb Movement. ASME Student Regional Conference, Lafayette, LA, March 2000.

Rask, M. and Gonzalez, R.V. (1999) The virtual human arm. ASME National Congress, Nashville, TN, Nov, 1999.

Rask, M. and Gonzalez, R.V. (1999) The virtual human arm. ASME Student Regional Conference, Fayetteville, AR, March 1999. 1st Place Presentation & Best Technical

Edmunds, J. and Gonzalez, R.V. (1999) The virtual human arm: optimal control’s role in determining muscle parameters. ASME Student Regional Conference, Fayetteville, AR, March 1999.

Mondy, A. and Gonzalez, R.V. (1999) Servo-motor control of human arm kinematics in virtual reality modeling. ASME Student Regional Conference, Fayetteville, AR, March 1999.

Warren, S. and Gonzalez, R.V. (1998) Fuzzy PD control with simulated proprioceptive feedback of disproportionately loaded artificial muscle actuators in a dual revolute system. ASME Student Regional Conference, College Station, TX, April 1998. 1st Place Presentation & Best Technical

Culver, A. and Gonzalez, R.V. (1998) Mechanical characterization of polyacrylonitrile fibers: comparison with human muscle performance. ASME Student Regional Conference, College Station, TX, April 1998.

Morrison, I. and Gonzalez, R.V. (1998) Dynamic control of artificial muscles across two human elbow joints. ASME Student Regional Conference, College Station, TX, April 1998.

Thielman, J. and Gonzalez, R.V. (1997) Physical model of human elbow joint using PAN fiber artificial muscles. ASME Student Regional Conference, Dallas, TX, April 1997. 2nd Place Presentation & Best Technical

Lee, C. and Gonzalez, R.V. (1997) Artificial muscles across the human elbow. ASME Student Regional Conference, Dallas, TX, April 1997.

 

Roger V. Gonzalez - Education

·         Post-Doctoral Fellow: Depts of Physiology and Rehabilitation Medicine, Northwestern University Medical School

·         Post-Doctoral Fellow: Sensory Motor Performance Program, Rehabilitation Institute of Chicago

·         Ph.D. in Mechanical Engineering: December, 1994
The University of Texas at Austin
Dissertation: A Computational Musculoskeletal Model of the Human Elbow and Forearm in the Analysis of Ballistic Movements

·         M.S. in Engineering (Biomedical): December, 1990
The University of Texas at Austin
Thesis: Prediction of Muscle Force Patterns in Elbow Flexion/Extension and Comparison With Electromyography

·         Manufacturing Engineering-Management Professional Corporate Program: June, 1988
General Electric Company

·         B.S. in Mechanical Engineering: May, 1986
The University of Texas at El Paso (UTEP)

 

Roger V. Gonzalez - Experience

Registered Professional Engineer in the State of Texas

·         Professor in Biomedical and Mechanical Engineering, 8/05 – Present

·         Associate Professor in Mechanical Engineering, 8/01 – 7/05
Assistant Professor
in Mechanical Engineering, 8/96 - 7/01
School of Engineering and Engineering Technology
LeTourneau University, Longview, TX, 75601

·         Post-Doctoral Research Scientist & NIH-NRSA Fellow with joint appointments in:
Sensory Motor Performance Program, Rehabilitation Institute of Chicago
Biomedical Engineering, Northwestern University
Physical Medicine and Rehabilitation, Northwestern University Medical School; 10/94 to 7/96

·         Research Assistant & NASA-JSC Fellow; 1/89 to 9/94
Mechanical Engineering, The University of Texas at Austin

·         Design Engineer; 6/89 to 9/89
Aircraft Engine Division, General Electric (Cincinnati, OH)

·         Senior Project & Design Engineer; 6/88 to 1/89
Electric Motors Division, General Electric (El Paso, TX)

·         Production-Manufacturing Management Engineer; 6/86 to 5/88
Aircraft Engine Division, General Electric (Albuquerque, NM)
Major Appliance Division, General Electric (Louisville, KY)

 

Roger V. Gonzalez - Research

Research Grants
e Investigator Awards

National Institute of Disability and Rehabilitation Research (NIDRR) Field Initiated Program – Development: Development of a Highly-Functional, High-Durability, Low-Cost, Trans-femoral Prosthesis for Developing World Amputees: Rigorously Tested using Engineering and Biomechanical Principles with Field Deployment. (Submitted; S Ayers, Co-PI).

National Science Foundation (NSF-OISE): International Research Experiences for Students with LeTourneau Engineering Global Solutions. (Funded; K Rispin, Co-PI).

National Institute of Health (NIH) R15: Knee Stability under Time-Varying Multiple-Muscle Loads. (Funded)

National Science Foundation (NSF-IREE): IREE Experience: A Synergistic Research Endeavor with the University of Western Australia. Amount: (Funded)

National Science Foundation (NSF-BES) RUI 0502638: Undergraduate Research on ACL-Deficient Knee Stability and its Prevalence to Osteoarthritis. (Funded)

National Science Foundation (NSF-BES) RUI 0201889: Undergraduate Research on the Intelligent Prosthetic Arm Project. (Funded)

National Institute of Health (NIH) F32AR08389: Biomechanics of Juvenile Rheumatoid Arthritis. Amount: $52,000 from 10/95 to 9/97 (Funded)

National Aeronautics and Space Administration - Johnson Space Center (NASA/JSC) NGT70252: A Computational Musculoskeletal Model of the Human Elbow and Forearm for Movement Analysis: With Application to Manned Space Operations. (Funded)

Private Donations – LEGS (LeTourneau Engineering Global Solutions): Initiative of deployment of low-cost prosthetic to Kenya. 9/04 to 12/06

Riverside Foundation – LEGS (LeTourneau Engineering Global Solutions): Initiative of deployment of low-cost prosthetic to Kenya, Bangladesh, and Sierra Leon.; Sept 2005.

M.E. Foundation – LEGS (LeTourneau Engineering Global Solutions): Initiative of deployment of low-cost prosthetic to Kenya, Bangladesh, and Sierra Leon.; Sept 2005.

Texas 2003 ARP/ATP : The Human Biomechanical Arm Project. Amount $200,000. Co-PI: Ronald E. Barr, Ph.D., The University of Texas at Austin (not funded)

National Institute of Health (NIH) R01 Subcontract AR40408: Neural and Biomechanical Contributions to arm movement. Amount $151,000 from 1/98 to 12/99, PI-Thomas S. Buchanan, Ph.D., University of Delaware

Teaching/Curriculum Grants

National Science Foundation: (DUE 0087898) Multi-disciplinary Biomedical Engineering: Preparing Future Engineers with Diverse Traditional and Specialized Skills.

 

Invited Lectures (Selected)

International Education International Engineering Education with LEGS:A Case Study of Working in Developing Countries” 2007 ABET Annual Meeting: The Global Workforce: The Future of Technological Education.

Biomechanics for prosthetic design in the developed and developing world”, Northwestern University, Dept of Biomedical Engineering.

 Active Learning: Using students in the lecture process”, University of Delaware, Dept of Mechanical Engineering

Computer Graphic Models of Adolescent Wrists with Juvenile Rheumatoid Arthritis”, Northwestern University Medical School, Department of Physical Medicine and Rehabilitation, Research Grand Rounds.

Upper Extremity Musculoskeletal Models: Their Development and Application

·    University of New Mexico, Department of Mechanical Engineering, Albuquerque, NM.

·    Iowa State University, Departments of Biomedical Eng and Exercise Science, Ames, IA.

·    LeTourneau University, University Lecture, Longview, TX.

A Computational Musculoskeletal Model of the Human Elbow and Forearm for Ballistic Movement Analysis

·    Johns Hopkins Medical School, Department of Orthopedic Surgery, Baltimore, MD.

·    Rehabilitation Institute of Chicago, Sensory Motor Performance Program, Chicago, IL.

·    NASA Johnson Space Center, Houston, TX.

Computational Biomechanics & Motor Control: Modeling the Upper Extremity

·    The Univ of Texas at El Paso, Departments of Mechanical Eng and Kinesiology, El Paso, TX.

·    The Univ of Texas at El Paso, College of Nursing and Health Sciences, El Paso, TX.

Elbow Joint Research Using Computational Biomechanics and Electromyography”, Providence Memorial Hospital, Department of Physical-Occupational Therapy and Rehabilitation.  El Paso, TX.

Wrist Joint Strength: Relationship to Muscle Architecture and Geometry”, Rio Vista Rehabilitation Hospital, El Paso, TX.

Research Interests

·         Development of 3rd world prosthetics for applications in the Developing World (LEGS).

·         Development of the “Intelligent Prosthetic Arm” – i.e. the “next” generation of Bioprothetics

·         Determination of ACL loading patterns in dynamic knee movements.

·         The use of “Artificial Muscle” in the coordination of a skeletal model.

·         Development of robust computational musculoskeletal models.

·         Biomechanics of Juvenile Rheumatoid Arthritis: muscle pathokinesiology and joint degeneration.

·         Determining muscle force patterns and magnitudes via real-time EMG - an "EMG-Driven Model"

·         Quantifying how the musculoskeletal geometry and muscle architecture affect joint performance.

·         Detailed computer graphic models of the human arm and hand as teaching tools and surgery simulation.

·         Enhancing human performance via neural network - optimal control hybrid systems.

·         Predicting and quantifying muscle fatigue in altered gravity environments.

·         Development of a prototype flexible manufacturing laboratory.

 

Roger V. Gonzalez - Teaching

Dynamics (My personal Favorite)
Introduction to Biomechanics
Musculoskeletal Biomechanics
Statics
Mechanics of Materials
Robotics and Manufacturing Applications
Mechanisms and Kinematics
Mechanical Vibrations
Senior Design; Faculty Project Advisor

 

Roger V. Gonzalez - Awards

ASEE                                       Section Outstanding Teaching Award                                                                      

LeTourneau University              Faculty Research Award                                                                                        

LeTourneau University              Piper Professor Nomination (Texas Statewide Award)                                             

ASME                                      Student Section Advisor Award                                                                               

NSF New Century Scholar        Engineering Teaching Excellence Workshop (Stanford University)                            

NIH Fellow                               National Research Service Award                                                                           

NRSA Training Grant                Rehab Inst. of Chicago/ Northwestern Univ. Med. School                                        

NASA-JSC Fellow                    3-year Graduate Student Training Grant                                                                   

GEM Fellow                             Graduate Engineering for Minorities Doctoral Fellowship                                          

R.C. Baker Fellow                    Baker Foundation Fellowship, UT Austin                                                                 

GEM Fellow                             Graduate Engineering for Minorities Masters Fellowship                                           

UT Fellowship                           UT Austin Graduate Opportunity Program                                                               

 

 

Roger V. Gonzalez - Professional Activities

Research Affiliations & Collaborations

University of Delaware, Dr. Thomas Buchanan, Virtual Human Arm 1/98 - Present

University of Texas at Austin, Dr. Ronald E. Barr, Analysis of Human Arm Movement.

Faculty Advisor

LeTourneau’s ASME Student Section 1/98 - Present ASME Student Section

Society of Women Engineers; LeTourneau University Chapter

Memberships

American Society of Mechanical Engineers (ASME)

American Society of Biomechanics (ASB)

International Society of Biomechanics (ISB)

Biomedical Engineering Society

Society of Hispanic Professional Engineers (SHPE)

Texas Society of Professional Engineers (TSPE)

American Society for Engineering Education (ASEE)

Editorial Service - Ad hoc Reviewer

Journal of Biomechanics

Journal of Biomechanical Engineering                                                                                                                

Journal of Biological Cybernetics

Journal of Applied Biomechanics

Journal of Higher Education

Journal of Anatomy                                                                                                                                              

NASA Technical Reports                                                                                                                                       

Presence: Virtual Environments and Teleoperation

Archives of Physical Medicine and Rehabilitation