Journal Articles

  • Johnson, J.S., Liu, Li, Thomas, G., and Spencer, J.P. (in press December 2005), “Calibration Algorithm for Eye Tracking with Unrestricted Head Movement,” Behavior Research Methods.
  • Kanduri, A.K., Thomas, G., Cabrol, N., Grin, E. and Anderson, R.C. (2005), “ The (in)accuracy of novice rover operators’ perception of obstacle height from monoscopic images,” Systems, Man and Cybernetics A, 35(4), 505-512. [local link]
  • Gerling, G.J., and G. Thomas (2005), Unrealistic, Pulsating Feedback Can Aid Effective Breast Examination Training, Journal of the Human Factors and Ergonomics Society 67: 670.
  • Wagner, J., G. Thomas, and C. Stanford (2003), Forces Exerted by a Conventional Dental Explorer during Clinical Examination, Carries Research, 37: 365-368.
  • Gerling GJ, A.M. Weissman, G. Thomas, and E.D. Dove (2003), Effectiveness of a dynamic breast examination training model to improve clinical breast examination (CBE) skills, Cancer Detection and Prevention, 27(6):451-6.
  • Thomas, G. (2002), Real-Time Panospheric Image Dewarping and Presentation for Remote Mobile Robot Control, Advanced Robotics, Journal of the Robotics Society of Japan, 17(4), 259-368.
  • Thomas, G., J.H. Goldberg, D. Cannon, and S. Hillis (2002),
    Surface textures improve the robustness of stereoscopic displays    , J. of the Human Factors and Ergonomics Society, 44(1): 157-170. [local copy]
  • Thomas, G.; M. Reagan, E.A. Bettis, III; N. Cabrol, A. Rathe (2001), Analysis of science team activities during the 1999 Marsokhod Rover Field Experiment: Implications for automated planetary surface exploration, Journal of Geophysical Research – Planets, 106(E4): 7775-7783.
  • Stoker, C.R., N.A. Cabrol, T.R. Roush, J. Moersch, J. Aubele, N. Barlow, E.A. Bettis, III ; J. Bishop, M. Chapman, S. Clifford, C. Cockell, L. Crumpler, R. Craddock, R. De Hon, T. Foster, V. Gulick, E. Grin, K. Horton, G. Hovde, J.R. Johnson, P.C. Lee, M.T. Lemmon, J. Marshall, H.E. Newsom, G.G. Ori, M. Reagan, J.W. Rice, S.W. Ruff, J. Schreiner, M. Sims, P.H. Smith, K. Tanaka, H.J. G. Thomas, R.A. Yingst, (2001), The 1999 Marsokhod rover mission simulation at Silver Lake, California: Mission overview, data sets, and summary of results, Journal of Geophysical Research, 106(E4): 7639-7663.
  • Cabrol, N. A.; E.A. Bettis, III, B. Glenister, G. Chong, C. Herrera, A. Jensen, M. Pereira, C.R. Stoker, E.A. Grin, R. Landheim, G. Thomas, J. Golden, K. Saville, G. Ludvigson, and B. Witzke, (2001), Nomad Rover Field Experiment, Atacama Desert, Chile, 2: Identification of paleolife evidence using a robotic vehicle, Lessons and recommendations for a Mars sample return mission,” Journal of Geophysical Research – Planets, 106(E4): 7807-7815.
  • Cabrol, N.A.; G. Chong-Diaz, C.R. Stoker, V.C. Gulick, R. Landheim, P. Lee, T.L. Roush, A.P. Zent, C. Lameli, A. Herrera, A. Iglesia, A. Jensen, M. Pereira, J. Dohm, R. Keaten, D. Wettergreen, M.H. Sims, K. Schwher, M.G. Bualat, H.J. Thomas, H.J., E. Zbinden, D. Christian, L. Pedersen, A. Bettis, III, G. Thomas, B. Witzke, (2001), “Nomad Rover Field Experiment, Atacama Desert, Chile, 1, Science results overview,” Journal of Geophysical Research – Planets, 106(E4): 7785-7806.
  • Wu, J., W. Chan, and G. Thomas (2001), Rapid and Accurate Inter-Robot Position Determination in Robot Teams, IEEE Transactions on Instrumentation and Measurement, 50(1): 163-168.
  • Thomas, G., L. Johnson, S. Dow, and C. Stanford (2001), Design and Testing of a Force Feedback Dental Simulator, Computer Methods and Programs in Biomedicine, 64(1): 53-64
  • Johnson, L., G. Thomas, C. Stanford, and S. Dow, (2001), A Formative Evaluation of a Dental Surgical Simulator, Journal of Dental Education, 12: 847.
    Wagner, J.L., A.M. Radtke, G. Thomas, V.K. Goel, C.M. Stanford, D.G. Wilder (2000), The Iowa Dental Probe: a Transducer to Measure Forces Applied by Dentists in a Clinical Setting, Journal of Clinical Engineering, 25(3): 164 – 168
  • Stanford, C.M., F. Welsch, N. Kastner, G. Thomas, G., R. Zaharias, K. Holtman, R.A. Brand, (2000), Primary human bone cells from older patients do not respond in culture at continuum level in vivo strain magnitudes, Journal of Biomechanics, 33(1): 63-71.
  • Wettergreen, D., D. Bapna, M. Maimone, and G. Thomas (1999), Developing Nomad for robotic exploration of the Atacama Desert, Robotics and Autonomous Systems, 26(2-3): 127-148.
  • Yun, M., D. Cannon, A. Freivalds and G. Thomas (1997), An Instrumented Glove for Grasp Specification in Virtual Reality Based Point-and-Direct Telerobotics, IEEE Trans. On Systems, Man & Cybernetics, Part B, 27(5): 835-846.
    Cannon, D. and G. Thomas (1997), Virtual Tools for Supervisory and Collaborative Control of Robots, Presence, Teleoperators and Virtual Environments Volume, 6(1): 1-28.
  • Thomas, G., R. Barton, and D. Cannon (1995), “Inferred Advantage: Using Kogan’s Symmetric Action Principle to Empirically Assess Alternatives in Complex System Development,” Research in Engineering Design, 7: 241-252.
  • Cannon, D., G. Thomas, C. Wang, C. and T. Kesavadas (1994), A Virtual Reality Based Point-and-Direct Robotic System with Instrumented Glove, International Journal of Industrial Engineering, Applications and Practice, 1(2): 139-148.
  • Medeiros, D., G. Thomas, A. Ratkus and D. Cannon (1994), Off-line Programming of Coordinate Measuring Machines Using an Instrumented Stylus, Journal of Manufacturing Systems, 13(6): 401-411.

Conference Papers

  • Glasgow, J., G. Thomas, E. Pudenz, N. Cabrol, D. Wettergreen, P. Coppin, “Panoramic Image Information Utility for Mobile Robot Exploration,” IEEE SMC Conference, Taipei, Taiwan, October 2006
  • Pudenz, E., Glasgow, J., Thomas, G., Coppin, P., Wettergreen, D., Cabrol, N. Searching for a Quantitative Proxy for Rover Science Effectiveness, Proceedings of the 2006 Conference on Human-Robot Interaction, March 2-4, 2006, Salt Lake City, Utah.
  • Glasgow, Justin, Erin Pudenz, Geb Thomas, Nathalie Cabrol, Peter Coppin and David Wettergreen (2005), Observations of a Science Team During an Advanced Planetary Rover Prototype Field Test, Ro-MAN Conference, August 13-15, Nashville, TN, 2005.
  • Liu, Li and Thomas, G. (2005), Displaying small surface features with a force feedback device in a dental training simulator, Human Factors and Ergonomics Society Annual Conference.
  • Gerling, G. and Thomas, G. (2005), Two dimensional finite element modeling to identify physiological biases for tactile gap discrimination, Human Factors and Ergonomics Society Annual Conference.
  • Gerling, G. and Thomas, G (2005), The Effect of Fingertip Microstructures on Tactile Edge Perception, First Joint Eurohaptics Conference and Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems, Pisa, Italy.
  • Thomas, G., Coppin, P., Cabrol, N., Wettergreen, D., Pudenz, E., Glasgow, J. (2005), Collaborative Virtual Environments for Control of Planetary Exploration Rovers, Special Session on Human Robot Interaction, Human Computer Interaction / Virtual Reality Conference 2005, July 22-27, 2005, Las Vegas, NV.
  • Thomas, G., J. Wagner, Z. Xiang, A. Kanduri, and J. Glasgow (2004), Analytical Rover Operations Development, IEEE Systems, Man and Cybernetics Conference, The Hague, The Netherlands.
  • Wagner, J., Thomas, G., Glasgow, J., Anderson, R.C., Cabrol, N., and Grin, E. (2004), Error-associated behaviors and error rates for robotic geology, Human Factors and Ergonomics Society 48th Annual Meeting, New Orleans, LA, September 20-24.
  • Liu, L., Thomas, G., Stanford, C., and Johnson, L. (2004), The identification of the critical haptic stimulus features in a clinical dental task, Human Factors and Ergonomics Society 48th Annual Meeting, New Orleans, LA, September 20-24.
  • G. Thomas, Engineering Robotic Geology for Mars Exploration, IIE Annual Conference, March 2004, Houston, TX.
  • G. Gerling, G. Thomas, “Effect of augmented visual performance feedback on the effectiveness of clinical breast examination training with a dynamically configurable breast model,” IEEE Systems, Man and Cybernetics, October 6-8, 2003, Washington, D.C.
  • J. Wagner, G. Thomas, Glasgow, J., “Assessing Geologic Image Interpretations Errors Occurring in Extraterrestrial Robotic Exploration,” IEEE Systems, Man and Cybernetics, October 6-8, 2003, Washington, D.C.
  • G.J. Gerling, G.W. Thomas, A.M. Weissman, E.L. Dove, “A Novel Breast Cancer Simulator to Improve Training of Physicians′ Tactile Sensitivity and Discrimination Skills in Clinical Breast Examination”, Iowa Academy Of Science Annual Meeting, April 25, 2003 in Des Moines, IA. Won best presentation award.
  • G. Thomas, (2002), “Virtual Environments and Mobile Robots: Control, Simulation and Robot Pilot Training – Guest Editor′s Introduction,” Presence, Teleoperators and Virtual Environments, 11(4): iv-v.
  • G. Thomas, P. Debbins (2002), “The engineering science preparation and introductory training (ESPRIT) Program,” Frontiers in Education Conference, 11/6-9, Boston, MA, v. 3, p. S4C/23.
  • G. Gerling, G. Thomas, A. Weissman, E. Dove, (2002), “Dynamic simulator for training clinical breast examination,” Human Factors and Ergonomics Conference, Baltimore, MD.
  • G. Gerling, G. Thomas, A. Weissman, E. Dove, (2002), “Effectiveness of a dynamic breast examination training model to improve clinical breast examination (CBE) skills,” World Breast Cancer Conference, Victoria, Canada.
  • Severson, J., Cremer, J., Lee, K., Allison, D., Gelo, S., Edwards, J., Vanderleest, R., Heston, S., Kearney, J. and Thomas, G., (2002), “Exploring virtual history at the National Museum of American History,” Virtual Society and Multimedia Conference, Gyeongju, Korea.
  • G. Thomas, M. Fienup, P. Gray, N. Changnon, P. Debbins, R. Dixon, T. Ferris, L. Hirshy, H. Jongedyk, A. Locke, D. Perry, M. Symonds, R. Tahir, (2001), “Human control of cooperative robots working on Mars,” 11th annual Iowa Space Grant Consortium Conference, Marshalltown, IA.
  • P. Harris, C. Stanford, J. Wagner, G. Thomas (2001), “Use of a force transducer during clinical caries detection,” American Association of Dental Research, Chicago, IL, Journal of Dental Research, Special Issue (AADR Abstracts), 80:118.
  • J.L. Wagner, C.M. Stanford, G.W. Thomas, (2001), “Dentist-specific patterns of forces are used in clinical procedures,” American Association of Dental Research, Chicago, IL. Journal of Dental Research, Special Issue (AADR Abstracts), 80:207.
  • G.W. Thomas, F. Steele, G. Gerling (2000), “Stimergy and bandwidth optimization: two new approaches to human interactions with planetary robotics,” 11th Annual Iowa Space Grant Consortium Conference, Marshalltown, IA.
  • M. Reagan, G. Thomas, M. Bauerly, G. Gerling, C. Petrie (2000), “VVROM: volcanic visual and thermographic onsite, real time monitoring,” Tenth Annual Iowa Space Grant Conference 12/00, Marshalltown, IA.
  • Steele, F.J., Pollack, E., Thomas, G., Lee, J., (2000) “Leveraging Popular Game Designs to Understand Multi-Agent System Interfaces,” HICS 2000 (Human Interaction with Complex Systems), Urbana-Champaign, IL.
  • Stanford, C.M., Welsch, F., Kastner, N., Thomas, G., Zaharias, R., Holtman, K., and Brand, R., “Primary Human Bone Cells from Older Patients Do Not Respond in Culture at Continuum Level In Vivo Strain Magnitudes,” 23rd Annual Meeting, American Society of Biomechanics Abstract Book, Pittsburgh, PA, 162-163.
  • G. Thomas, C. Petrie, N. Loeppke, M. Bauerly, R. Mills, M. Rick, B. Wyatt, M. Reagan, N. Cabrol, S. Dow, S. Fischer, S. McClarigan, J. Steele, J. Wagner, (1999), “Project MARVIN: Mars Advanced Robotic Visualization Initiative,” Proceedings of the 9th Annual Iowa Space Grant Consortium Conference, 1999.
  • Dow, S., Thomas, G., and Johnson, L (1999). “Signal detection performance with a haptic device,” 1999 Human Factors and Ergonomics Conference, September, 1999, Proceedings published on CD.
  • Tawil, A.Z., Thomas, G., Lee, J.D., and McLennan, G., (1999), “What’s so hard about bronchoscopic surgery? Identifying the perceptual and cognitive difficulties of bronchoscopic surgery,” Proceedings 1999 Human Factors and Ergonomics Conference.
  • Steele, F., Thomas, G., Blackmon, T., (1999), “An operator interface for a robot-mounted, 3D camera system: Project Pioneer,” Proceedings of the IEEE Virtual Reality International Symposium, Houston, TX, pp. 126-231.
  • Thomas, G. And Steele, F., (1998), “Projected textures – a supervisory control tool for estimating robot position in hazardous environments,” Proceedings of the American Nuclear Society, Pittsburgh, PA.
  • Steele, F., Thomas, G., Blackmon, T., (1998), “An operator interface for a robot-mounted, 3D camera system: Project Pioneer,” Proceedings of the American Nuclear Society, Pittsburgh, PA.
  • T. Blackmon, L. Ngyuen, C., F. Neveu, D. Rasmussen, E. Zbinden, NASA Ames Research Center, M. Maimone, L. H. Matthies, Jet Propulsion Lab.; S. Thayer, V., Broz, J. Teza, J. Osborn, M. Hebert, Carnegie Mellon Univ.; G. Thomas, J. Steele, Univ. of Iowa, (1999), “Virtual reality mapping system for Chernobyl accident site assessment,” Proceedings of the SPIE, Human Vision and Electronic Imaging IV, Vol. 3644, pp. 338-345.
  • Corby, K., Wu, J., Chan, W., Thomas, G., (1998), “Sensing and positioning technologies for planetary nanorobot teams,” Proceedings Eighth Annual Iowa Space Grant Conference, University of Iowa, October 1998. pp. 1-9.
  • Thomas, G., Robinson, W., Dow, S., (1997), “Improving the visual experience for mobile robotics,” Proceedings Seventh Annual Iowa Space Grant Proceedings, Drake University, November 1997. pp. 10-20.
  • Thomas, G., Blackmon, T., Sims, M., and Rasmussen, D., (1997), “Video engraving for virtual environments,” Proceedings Electronic Imaging: Science and Technology ’97, San Jose, California, February 1997.
  • Cannon, D., Graves, C., and Thomas, G., (1996), “Virtual tools and robotics,” Video Proceedings of the 1996 IEEE International Conference on Robotics and Automation.
  • Thomas, G., Cannon, D., and Goldberg, J., (1995), “Video texture cues enhance stereoscopic depth perception in a virtual reality-based, telerobotic interface,” 1995 IEEE International Conference on Systems, Man, and Cybernetics, Vancouver, Canada.
  • Cannon, D. and Thomas, G., (1994), “Point-and-direct virtual tools for robotic control in single shell tank (SST) remediation,” Sandia Robotics Forum.
  • Cannon, D., and Thomas, G., (1993), “Virtual reality based point-and-direct (VR-PAD) strategic control of telerobotics in an interwoven live/graphic environment,” Sandia Robotics Forum.