Thomas Yen

Instrumentation Innovator-Instructor

Room: 2160
Engineering Centers Building
1550 Engineering Drive
Madison, WI 53706

Ph: (608) 263-6803
yen@engr.wisc.edu


Research Interests

Ergonomics; Human Factors Engineering; Biomedical Engineering; Occupational Biomechanics; Rehabilitation Engineering; Telerobotic control interfaces, Product/User Interface Design, Medical Instrumentation. Dr. Yen is involve in all aspects of the teaching and research programs in the Industrial and Systems Engineering and Biomedical Engineering Departments (human factors, ergonomics, biomechanics, user interface design, medical instrumentation, surgical robotics and rehabilitation engineering) and the Department of Surgery (bioreactor design for vocal fold cell growth, measurement techniques for objective surgical performance and surgical robotic interface) , and Orthopedics and Rehabiliation (Bioreactors and electrospinner for orthopedic cells and tissues).

Education

Ph.D. in Industrial Engineering 1997 - University of Wisconsin - Madison
Human Factors Engineering and Ergonomics. Minor in Electrical and Computer Engineering specializing in Biomedical Instrumentation

Master of Science in Industrial Engineering 1991 - University of Wisconsin - Madison
Human Factors Engineering and Ergonomics with extensive courses in Statistical Analysis and Experimental Design, Digital Microprocessors, Computers in Controls and Instrumentation, Medical Instrumentation, Computers in Medicine.

Bachelor of Science in Biomedical Engineering 1987 - Northwestern University, Evanston, IL
Specialization in medical instrumentation, and biological and digital control systems.

Research Interests

Ergonomics; Human Factors Engineering; Biomedical Engineering; Occupational Biomechanics; Rehabilitation Engineering; Telerobotic control interfaces, Product/User Interface Design, Medical Instrumentation. Dr. Yen is involve in all aspects of the teaching and research programs in the Industrial and Systems Engineering and Biomedical Engineering Departments (human factors, ergonomics, biomechanics, user interface design, medical instrumentation, surgical robotics and rehabilitation engineering) and the Department of Surgery (bioreactor design for vocal fold cell growth, measurement techniques for objective surgical performance and surgical robotic interface) , and Orthopedics and Rehabiliation (Bioreactors and electrospinner for orthopedic cells and tissues).

Publications

  1. Chen, C., Hu, Y.H., Yen, T.Y. and Radwin, R.G., 2012, Automated Video Exposure Assessment of Repetitive Hand Activity Level for a Load Transfer Task. Human Factors, Online August 28, 2012 : http://hfs.sagepub.com/content/early/2012/08/28/0018720812458121
  2. Irwin, C.B., Meyer, R.H., Yen, T.Y., Kelso, D.P., & Sesto, M.E. (2008). Force and impulse production during the use of a touch screen by individuals with motor control disabilities. Proceedings of the Human Factors and Ergonomics Society 52nd Annual Meeting, 52(19), 1317-1320.
  3. Yen, T. Y., and Radwin, R. G., 2006, Usability Testing by Multimedia Video task Analysis. In J. Winters and M. Story (Ed.), Medical Instrumentation: Accessibility and Usability Considerations (pp. 195-207). Boca Raton, FL: CRC Press.
  4. Yen, T. Y. and Radwin, R. G., 2002, A comparison between analysis time and inter-analyst reliability using spectral analysis of kinematic data and posture classification, Applied Ergonomics, 33(1), 85-93.
  5. Yen, T. Y and R. G. Radwin, 2000, Comparison between spectral analysis and observational analysis for quantifying biomechanical stress in repetitive industrial work, Ergonomics, 43(1), 106-132.
  6. Yen, T. Y. and Radwin, R. G., 1999, Automated job analysis using upper extremity biomechanical data and template matching, International Journal of Industrial Ergonomics, 25(1), 19-28.
  7. R.G. Radwin and T.Y. Yen, 1998, A comparison of physical stress between sequential and non-sequential nailers, Advances in Occupational Ergonomics and Safety: Proceedings of the XIIIth Annual International Occupational Ergonomics and Safety Conference, Ann Arbor, MI..
  8. R.G. Radwin and T.Y. Yen, 1998, Human Force and Acceleration Measurements, Handbook of Industrial Ergonomics, Edited by W. Karwowski and W. Marras, CRC Press.
  9. R.G. Radwin and T.Y. Yen, 1997, Risk Factor Quantification and Multimedia Observational Job Analysis, American Industrial Hygiene and Conference and Exposition, Dallas, TX
  10. Yen, T. Y. and Radwin, R.G., 1997, Automated Job Analysis Using Biomechanical Data and Template Matching, Proceedings of the Human Factors and Ergonomics Society 41st Annual Meeting, Albuquerque, NM, 1997.
  11. Yen, T. Y. and Radwin, R.G., 1997, A Comparison Between Time to Perform Job Analysis for Physical Stress Using Spectral Analysis and Posture Classification, Proceedings of the 13th Triennial Congress of the International Ergonomics Association, Tampere, Finland, 1997.
  12. Yen, T.Y. and Radwin, R.G., 1996, Comparison of spectral analysis, time and motion study, and postural classification for quantifying biomechanical stress in repetitive industrial work, 1996 4th Pan-Pacific Conference on Occupational Ergonomics, Taipei, Taiwan.
  13. Radwin, R.G., Beebe, D.J., Webster, J.G., and Yen, T.Y., Instrumentation for Occupational Ergonomics, Occupational Ergonomics: Theory and Applications, A. Bhattacharya and J.D. McGlothlin, Eds., 1996, Marcel Dekker, Inc., New York.
  14. R.G. Radwin and T.Y. Yen, 1995, Field Studies Using Spectral Analysis for Quantifying Upper Extremity Repetitive Motion, Second International Scientific Conference on Prevention of Work-related Muscloskeletal Disorders, Montreal.
  15. T.Y. Yen and R.G. Radwin, 1995, A video-based system for acquiring biomechanical data synchronized with arbitrary events and activities, IEEE Transactions in Biomedical Engineering, 42(9), 944-948.
  16. R.G. Radwin, M.L. Lin, and T.Y. Yen, 1994, Exposure assessment of biomechanical stress in repetitive manual work using frequency-weighted filters, Ergonomics, 37(12), 1984-1998.
  17. R.G. Radwin and T.Y. Yen, 1993, Development of an instrument for assessing exposure to physical stress in repetitive manual work, Proceeding of the 1993 NSF Design and Manufacturing Systems Conference, Charlotte, N.C.
  18. R.G. Radwin and T.Y. Yen, 1993, Development of a video-based data recording method for automating ergonomics analysis of repetitive manual work, American Industrial Hygiene Conference, Snowbird, Utah.
  19. R.G. Radwin, M.L. Lin, and T.Y. Yen, 1993, Exposure assessment of biomechanical stress in repetitive manual work using spectral analysis, Human Factors and Ergonomics Society Annual Meeting, Seattle, WA.
  20. T.Y. Yen, Appendix E - Signal Generation, Biomedical Digital Signal Processing, W.J. Tompkins, Ed., 1993, Prentice Hall, Englewood Cliffs, N.J.
  21. S.F. Wiker, N. Duffie, T.Y.Yen, and K.Gale, 1990, Comparison of force and tactile feedback for grasp force control in telemanipulation, Proceeding of the 4th Annual Workshop of Space Operations Applications and Research (SOAR 90), Albuquerque, NM.
  22. S.F. Wiker, N. Duffie, and T.Y.Yen, 1991, Importance of Numerosity and Distribution of Articulations within the Digits, Wrists, and Arms of Telemanipulators Confronted with Dexterous Assembly Tasks, Proceeding of the 5th Annual Workshop of Space Operations Applications and Research (SOAR 91), Albuquerque, NM.

Duties and Responsibilities

  • Instructor for the Undergraduate Design Course.
  • Manage the Bioinstrumentation Teaching Laboratory.
  • Assist faculty and graduate students in developing, assembling, designing, and construction of research methodologies and measurement and research instrumentation.
  • Manage, maintain, and update the department computer/network infrastructure.
  • Manage, maintain, and update the Flexible Manufacturing Cell Teaching Laboratory. Assist Faculty and Teaching Assistant in the use of the lab.
  • Assist with the technical planning, development and implementation of laboratory and field experiments.
  • Develop experimental protocols, data collection and data analysis plans. Perform detailed engineering analyses for laboratory projects.
  • Assists in technical writing, presentation development, and research reports, journal articles, and research grant writing.
  • Perform and/or supervise the maintenance, hands-on diagnostic evaluation and repair of laboratory instrumentation. Design, specify, fabricate, test, and document new equipment and software.
  • Manage the day to day operation of the Ergonomics Analysis and Design Consortium including future research and development efforts. Maintain and manage the Website for the consortium. Provide training and instruction to consortium members on the software/hardware developed by the consortium.
  • Maintain and manage (including bug fixes, updates/improvements, and documentation) the commercial software package Multimedia Video Task Analysis (MVTA). Develop and teach workshops and seminars on the use of MVTA.
  • Supervise and assist research staff and graduate students on their research projects.

Experience

Associate Instrumentation Innovator-Instructor – University of Wisconsin – Madison, Biomedical Engineering Dept. (2009- Present)
Instructor for the Undergraduate Design Course. Manage the Bioinstrumentation Teaching Laboratory. Assist faculty and graduate students in developing, assembling, designing, and construction of research methodologies and measurement and research instrumentation. Manage, maintain, and update the department computer/network infrastructure.

Associate Instrumentation Innovator-Instructor – University of Wisconsin – Madison, Industrial and Systems Engineering Dept. (2009- Present)
Manage, maintain, and update the Flexible Manufacturing Cell Teaching Laboratory and Radio Frequency Identifaction (RFID) Laboratory. Assist Faculty, Teaching Assistant, Graduate student in the use of the labs.

Assistant Scientist – University of Wisconsin – Madison, Trace R&D Center (2002- 2008)
Project lead on several projects at the Center, including the Telecommunications Access Rehabiliation Engineering Research Center (RERC), the Technology and Aging RERC, and the Universal Design / Disability Access Program for the National Computational Science Alliance.

Assistant Scientist – University of Wisconsin – Madison, Biomedical Eng. Dept. (1999-2008)
Manage the day-to-day operation of the Ergonomic Analysis and Design Consortium and the Occupational Ergonomics and Biomechanics Laboratory. Continue the development and improvement to MVTA (Multimedia Video Task Analysis) the video-based data acquisition and analysis system for the collection/analysis of biomechanical data for repetitive motion injury studies. Design and assisted in human factors and ergonomics field/laboratory research projects for jobs in industry.

Instrumentation Innovator-Researcher – University of Wisconsin – Madison, Industrial Eng. Dept., (1999-2002)
Assist faculty and graduate students in developing, assembling, designing, and construction of research methodologies and measurement instrumentation for research. Manage, maintain, and update the department computer/network infrastructure. Supervise subordinates.

Research Associate - University of Wisconsin - Madison, Ergonomic Analysis and Design Consortium (1997-1998)
Develop, and commercialize a video-based data acquisition and analysis system for the collection/analysis of biomechanical data for repetitive motion injury studies. Programmed software for commercial release. Design and assisted in human factors and ergonomics field research for consortium members. Installed a Linux-based World Wide Web server and, design and developed the web site for the consortium. Managed the day-to-day operation and personnel for the consortium. Assisted graduate students with their research project and equipment development.

Lecturer - University of Wisconsin - Madison, Department of Industrial Engineering (1997)
Developed and taught a course on Ergonomic Methods for properly conducting human factors experiments and application of the results to industrial settings.

Industrial Exeperience

  • Provided expert testimony in products liability litigation.
  • Tested and evaluated pneumatic power tools.
  • Numerous ergonomic job analysis of construction drywalling, corded power tool usage, assembly lines, time studies of doning and doffing PPE in meat-processing and semiconductor industries.
  • Organized and supervised field data collection teams for assembly, meat-processing and semiconductor plants.
  • Organized and supervised teams of analysts for large scaled ergonomics studies.
  • Tested large offroad construction vehicle steering system for reducing operator stress and fatigue.
  • Tested and evaluated portable electronics equipment for possible injury causation.
  • Tested and evaluated portable electronics equipment for universal assessibility (Disabled and Aging Population).
  • Developed and programmed commercially available analysis software, MVTA (Multimedia Video Task Analysis) which has been purchased and used on several projects by Exponent, NCR and others.
  • Collabator for usability testing with the RehabilitationEngineeringResearchCenter for Assessible Medical Instrumentation at MarquetteUniversity.
  • Co-author of many grant proposals ranging from $20,000 to $1.5 million
  • Taught proper methods and techniques for measurement of  power hand tool vibration characteristics as defined by ANSI S3.34-1986.
  • Developed and programmed commercially available software for combustion engine sound level analysis utilizing spectral analysis.
  • Designed and constructed a force measuring bicycle pedal for used in foot force analysis and rehabilitation of Stroke patients.
  • Development of cost-effective measurement tools and instrumentation for human factors and ergonmics research using readily-available “off-the-shelf” consumer products and open-source software.
  • Data acquisition instrumentation development and programming using Object Oriented Programming language.
  • Knowledgeable in data acquisition instrumentation, development and programming using OOP and LabView, also in circuities for Analog to Digital Converter, sensor interface, and general electronics.
  • Knowledgeable in state of art multimedia technologies and equipment especially digital audio/video relevant to ergonomics research tool development.

Patents and Inventions

  • Registered Trademarks and Copyright of Multimedia Video Task Analysis and MVTA software, Wisconsin Alumni Research Foundation, 1998.
  • Method and Device for Associating an Alternate Access Device with a Telephone, Patent pending

Profile Summary

Thomas Yen is currently an Undergraduate Design Course instructor in Biomedical Engineering, where he also manages the Bioinstrumentation Teaching Lab and assists the faculty and graduate students in developing, assembling, designing, and construction of research methodologies, and measurement and research instrumentation. Dr. Yen also has an extensive background in statistical analysis and experimental design. He developed a video-based data acquisition and analysis system for the collection/analysis of biomechanical data for repetitive motion injury studies, which is commercially marketed. Dr. Yen’s Human Factor and Ergonomics background allows him to understand the importance of a properly designed instrumentation interface as a requirement to improving efficient usage and reducing errors during user interaction. Dr. Yen is skilled in designing, adapting, and modifying medical and research instrumentation to increase efficiency and to better meet the needs and functions of the experimental protocol.

Dr. Yen has many active collaborations with colleagues in the Departments of Surgery, and Orthopedics and Rehabiliation in the School of Medicine and Public Health. He has custom design and built bioreactor for studying the cell growth on the vocal fold, and high-throughput bioreactor for growing 3D structures, cells and tissues. He has also built a flexible research electrospinning unit that has many adjustable parameter to study their effort on the fiber sturcture formation. He collaborates on research to develop and study measure for objective quantification of surgical performance, and teaching and training methodologies. 

 


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