Julius Keller, Ph.D.

Associate Professor / SATT Associate Head for Purdue Global Programs

Contact Info

765-494-9969

SIML 106

Julius Keller is an active Certified Flight Instructor. Prior to entering academia, Dr. Keller gained experience as a charter pilot in a Piper Navajo. He also managed multi-modal transportation and logistics for numerous Fortune 500 Companies. Dr. Keller’s primary scholarly areas include addressing issues identified by the FAA and NTSB such as fatigue among collegiate aviation pilots and wildlife strikes. Dr. Keller has also investigated VFR into IMC and safety culture. He intentionally uses research to promote effective teaching and learning for the purpose of improving pilot competencies as well as safety. In addition to his scholarship, he has been recognized for his leadership efforts involving student activities. He is the faculty advisor for the Women in Aviation Purdue Chapter, Organization of Black Aerospace Professionals, and National Gay Pilots Association. Dr. Keller teaches courses pertaining to advanced transport operations, human error, and research methods.

Research Interests

General Aviation Human Factors
General Aviation/Collegiate Aviation Training and Education

Education History

Doctorate of Philosophy, Technology, Purdue University, 2015
Master of Science, Aviation and Transportation Management, Lewis University, 2011
Bachelor of Arts, Aviation Aircraft Systems, The Ohio State University, 2006

Publications and Presentations

Peer Reviewed Journal Publications

Keller J., Mendonca, F. A. C., & Adjekum, K. (2021). Contributory factors of fatigue among collegiate aviation pilots: An ordinal regression analysis. Collegiate Aviation Review, International, 39(2), 1-31.
Mendonca, F. A., Keller, J., Levin, E., & Teo, AG. (2021). Understanding fatigue within a collegiate aviation program. The International Journal of Aerospace Psychology, 31(3), 1-17.
Kotla, B., Bosman, L. B., & Keller, J. (2021). How photovoice can be used for continuous improvement within an aviation certified flight academic degree program. International Journal of Educational Research, 2(2), 1-9.
Mendonca, F., Keller, J., & Huang, C. (2020). An analysis of wildlife strikes to aircraft in Brazil: 2011-2018, Journal of Airline and Airport Management, 10(2), 51-64.
Keller J., Mendonca, F. A. C., Cutter, J., Suckow, M., &. Dillman, B. G. (2020). Justification and development of competencies to transform a collegiate aviation flight program. Journal of Competency-Based Education, 5(2), 1-13.
Wulle, B. W., Whitford, D. K., & Keller, J. (2020). Learning theory and differentiation in flight instruction: Perceptions from Certified Flight Instructors. Journal of Aviation/Aerospace Education & Research, 29(2), 1-15.
Keller, J., Mendonca, F. A. C., Laub, T., & Wolfe, S. (2020). An analysis of self-reported sleepiness and fatigue measures from collegiate aviation pilots. Collegiate Aviation Review International, 38(1), 1-18.
Bosman, L., Keller, J., Mentzer, N., & Sparkling, A. (2020). Applying multiple modes of assessment to evaluate the teamwork competence. International Journal of Engineering Education, 36(1), 317-327.
Taylor, C., Keller, J. Fanjoy, R., & Mendonca, F. (2020). An exploratory study of automation errors in Part 91 Operations. International Journal of Aviation/Aerospace Education and Research, 29(1), 33-48.
Mendonca, F., Keller, J. & Lu, C.T. (2019). Fatigue identification and management in flight training: An investigation of collegiate aviation pilots. International Journal of Aviation, Aeronautics, and Aerospace, 6(5), 1-31.
Levin, E., Mendonca, F. Keller, J. & Teo, A. (2019). Fatigue in collegiate aviation. International Journal of Aviation, Aeronautics, and Aerospace, 6(4), 1-26.
Keller, J., Mendonca, F., & Cutter, J. (2019). Collegiate aviation Pilots: Analyses of fatigue-related decision-making scenarios. International Journal of Aviation, Aeronautics, and Aerospace, 6(4), 1-27.
Lu, C.T., Guo, J., Mendonca, F., & Keller, J. (2019). Proposing an electronic job cards for air carriers. International Journal of Crisis Management, 9(1), 1-7.
Alabi, B. N. T., & Keller, J. (2018). Effectiveness of crack sealing in reducing the rate of pavement deterioration. Infrastructure Asset Management, 6(1), 30-39.
Keller, J., Adjekum, D. K., Alabi, B. N., & Kozak, B. (2018). Measuring Public Utilization Perception Potential of Unmanned Aircraft Systems. International Journal of Aviation, Aeronautics, and Aerospace, 5(3), 1-31.
Keller, J.C., Carney, T., Major, W., Price, M., Xie, A. (2017). VFR-into-IMC: An analysis of two training protocols on weather-related posttest scores. Journal of Aviation Technology and Engineering. 7(1), 2-18.
Major, W., Keller, J.C., Xie, A., Price, M., Carney, T.Q.(2017). Continued VFR-into-IMC accident trends (2003-2012) and pilots’ perceptions of deficiencies in knowledge, skills, and abilities. Journal of Aviation Technology and Engineering. 7(1), 50-57.
Mendonca, F., Keller, J.C., Wang, Y. (2017). Managing the risk: An analysis of bird strike reporting at part 139 airports in Indiana (2001-2014). Journal of Airline and Airport Management, 7(1), 43-64.
Adjekum, D. K., Keller, J., Walala, M., Christensen, C., DeMik, R. J., Young, J. P., & Northam, G. J. (2016). An examination of the relationships between safety culture perceptions and safety reporting behavior among non-flight collegiate aviation majors. International Journal of Aviation, Aeronautics, and Aerospace, 3(3), 1-36.
Adjekum, K. D., Walala, M. S., Keller, J.C., Christensen, C., Young, J.P. DeMik, R. J.& Northam, G. (2016). An analysis of the effects of demographic variables and perceptions on the safety reporting behavior in collegiate flight programs. International Journal of Aviation Sciences, 1(2), 92-133.
Yu, W., Keller, J. C., Huang, C., Fanjoy, R.O. (2016). An Exploratory Study: the relationship between occupational stressors, coping mechanisms and job performance among Chinese aviation maintenance technicians. Journal of Aviation Technology and Engineering, 5(2), 1-12.
Adjekum, K. D., Keller, J.C., Walala, M. S., Christensen, C., Young, J.P. DeMik, R. J.& Northam, G. (2015). Cross-sectional assessment of safety culture perceptions and safety behavior in collegiate aviation programs in the United States. International Journal of Applied Aerospace and Aviation, 2(4), 1-36.
Keller, J.C., Wang, Y., Cooney, J., Erstad, A.E., & Lu, C. T. (2015). Cultural dimensions: A comparative analysis of aviation students in China and the U.S. International Journal of Applied Aerospace and Aviation, 2(3), 1-17.
Keller, J. C., Walala, M., & Fanjoy, R.O. (2014). Interaction of weather and other contributing factors in general aviation instrument approach accidents. Collegiate Aviation Review, 32(2).
Keller, J., Shila, J. J., & Lu, C. T. (2014). What does flight school security mean? A case study of university affiliated flight schools in the United States. Journal of Transportation Security, 7(2), 157-168.
Fanjoy, R. O. & Keller, J.C. (2013). Flight skills proficiency issues in instrument approach accidents. Journal of Aviation Technology and Engineering, 3(1), 17-23.
Demik, R., Keleher, J., Kasak, N., Keller, J.C., Mazza, A & Raess, J. (2011). Lead memory in general aviation aircraft engine emissions. Journal of Aviation Technology and Engineering, 1(2), 74-79.

Conference Presentations

Romero, M, Estes, K., Miller, I., & Keller, J. (2021). Communicating diversity culture through aviation program websites at part 141 pilot schools. A presentation at the Global Conference on Diversity in Aviation, Aerospace and STEM. Columbus, Ohio.
Keller, J, Mendonca, F.A.C., Robertson, M., & Romero, M. (2020). Exploring Fatigue Research Among Collegiate Aviation Pilots. A virtual presentation for the University Aviation Association.
Keller, J & Mendonca. F. (2020). Measuring fatigue and sleepiness in collegiate aviation flight students. A presentation at the National Training Aircraft Symposium. Daytona Beach, Florida.
Mendonca. F. & Keller, J. (2020). Fatigue in collegiate aviation. A presentation at the National Training Aircraft Symposium. Daytona Beach, Florida.
Mendonca. F., Keller, J., & Dillman, B. (2019). Competency‑based education: A framework for a more efficient and safer aviation industry. A presentation at the International Society of Air Safety Investigators. The Hague, Netherlands.
Keller, J., Mendonca, F., Cutter, J., Suckow, M., & Dillman, B. (2019). Transforming the Professional Flight Program Curriculum: Justification, Process, and Future Development. A presentation at the Polytechnic Summit. Menomonie, Wisconsin.
Keller, J., Mendoca, F., Levin, E. & Teo, A. (2019). Fatigue related decision‑making scenarios: An exploratory study of collegiate pilots. A presentation at the International Symposium of Aviation Psychology. Dayton, Ohio.
Mendonca F., Keller, J., & Lu, C-T. (2019). Mitigating the risk of bird strikes: The use of virtual reality during flight training. A presentation at the International Symposium of Aviation Psychology. Dayton, Ohio.
Keller, J., Mendonca, F.A., & Huang, C. (2018). Fatigue issues and mitigation strategies. A presentation at the University Aviation Association. Dallas, Texas.
Adjekum, K. D., Walala, M. S., Keller, J.C., Christensen, C., Young, J.P. DeMik, R. J.& Northam, G. (2017). Relationships between safety culture perceptions and safety reporting behavior among non-flight aviation majors. A presentation at the International Symposium of Aviation Psychology. Dayton, Ohio.
Mendonca, F., Huang, C., Fanjoy, R., Keller, J. (2017). A case study using the human factors analysis and classification system framework. A presentation at the International Symposium of Aviation Psychology. Dayton, Ohio.
Adjekum, K. D., Walala, M. S., Keller, J.C., Christensen, C., Young, J.P. DeMik, R. J.& Northam, G. (2016). An analysis of the effects of demographic variables and perceptions on the safety reporting behavior in collegiate flight programs. A presentation at the University Aviation Association. Omaha, Nebraska
Dillman. B., Keller. J. (2016). The effect of a midpoint marking on pilot decision-making while landing. A presentation at the meeting of PEGASAS, Ames, IA.
Dillman, B., Borsa, R., Duran, L., Keller, J. (2016). Effects of runway mid-point markings on pilot approach to landing decision-making. A Presentation at A3irCon. Phoenix, Arizona.
Adjekum, K. D., Keller, J.C., Walala, M. S., Christensen, C., Young, J.P. DeMik, R. J.& Northam, G. (2016). Cross-sectional assessment of safety culture perceptions and safety behavior in collegiate aviation programs in the United States. A Presentation at A3irCon. Phoenix, Arizona.
Wang, Y., Keller. J. & Fanjoy, R.O. (2015). Chinese Aviation Maintenance Professionals: The relationship between occupational stresses, coping mechanisms and work performance. A Presentation at A3irCon. Phoenix, Arizona.
Keller, J.C., Walala, M. & Fanjoy, R.O. (2014). Interaction of weather and other contributing factors in general aviation instrument approach accidents. A presentation at the University Aviation Association. Daytona Beach, Florida.
Fanjoy, R & Keller, J. (2013). Flight skills proficiency issues in instrument approach accidents. A presentation at the 4th annual graduate research symposium. Purdue University, West Lafayette, Indiana.
Demik, R., Keleher, J., Kasak, N., Keller, J., Mazza, A & Raess, J. (2011). Lead memory in general aviation aircraft engine emissions. A presentation at the 1st annual symposium, Lewis University. Romeoville, Illinois.

Certifications

FAA Commercial Pilot privileges, Airplane Single-engine Land- and Multiengine Land
FAA Certified Flight Instructor, Airplane Single- and Multiengine Land, Instrument-Airplane
FAA Remote Pilot