Jules O Yimga

Title
Associate Professor, Chair, and Program Coordinator
Email
Department
Business School Dept
College
College of Business, Security & Intel

Office Hours

M, W: 12:00p. - 5:00p.

Areas of Expertise

  • Industrial Organization (IO)
  • Air Transportation
Jules O Yimga

Jules Yimga is a Fulbright U.S. Scholar, an associate professor of Economics, and the chair of the College of Business. Jules received his Ph.D. in Economics from Kansas State University, his MBA from Alabama A&M University, and his B.S. in Banking and Finance from the University of Buea in Cameroon.

Much of his research examines competition and policy issues in the airline industry.

  • Ph.D. - Doctor of Philosophy in Economics: General, Kansas State University
  • EC 330: Air Transport Economics
  • CEABA 396: Coop Avia Bus Administration
  • BA 102: Intro Avia, Aero, Global Bus

EC 200: Survey of Economics

EC 211: Macroeconomics

EC 225: Engineering Economics

EC 315: Managerial Economics

EC 317: Global Economics, Politics & Culture (study abroad course to South Africa, Eswatini and Lesotho)

EC 330: Air Transport Economics

BA 430: International Trade and Regulations

BA 395T: Commercial Aspects of UAS/Advanced Air Mobility

  • Yimga, J. (2024) “Air Travel-Induced COVID-19 Risk and Mortality across US Counties,” Transport Economics and Management, forthcoming. 
  • Yimga, J. (2024) “Public Health Infrastructure and COVID-19 Spread: An Air Transportation Network Analysis,” Journal of the Air Transport Research Society, 3, 100040. https://doi.org/10.1016/j.jatrs.2024.100040
  • Yimga, J. (2024) “The On-Time Performance Effects of a Policy Change in Airport Slot Restrictions: A Synthetic Control Analysis,” Economics of Transportation, 38, 100356. https://doi.org/10.1016/j.ecotra.2024.100356.
    • Best Paper Award Winner at the 65th Annual Transportation Research Forum, Arlington, VA, April 4–5, 2024.
  • Yimga, J. (2023) “Multimarket Contact and Market Power Implications in the US Airline Industry,” Networks and Spatial Economics, 1-40. https://doi.org/10.1007/s11067-023-09601-3
  • Yimga, J. (2023) “Laser Exposure Incidents and Aviation Safety in the United States: Should We Be Concerned?” Journal of Transportation Security, 16(1), 6. https://doi.org/10.1007/s12198-023-00266-0. 
  • Yimga, J. (2023) “Fare Impacts of a Regulatory Change in Takeoff and Landing Restrictions: The Case of Newark Liberty Airport” Transport Economics and Management, forthcoming. https://doi.org/10.1016/j.team.2023.06.003
  • Le, H. and Yimga, J. (2023) “Codeshare restrictions as antitrust remedy” Transport Policy, 138, 17-24. https://doi.org/10.1016/j.tranpol.2023.05.004
  • Le, H. and Yimga, J. (2023) “Slot Divestitures and Price Competition at Reagan National and LaGuardia” Review of Industrial Organization, 1-20. https://doi.org/10.1007/s11151-023-09900-6
  • Yimga, J. (2023) “Policy Analysis Using Synthetic Control Methods: Evaluating the Price Effects of a Change in Airport Slot Restrictions” Journal of Transport Economics and Policy, forthcoming.
  • Yimga, J. (2022) “Multimarket Contact and Profitability Implications for US Airlines” Review of Network Economics, forthcoming.
  • Yimga, J. (2022) “Multimarket Contact and Welfare Implications for Airline Passengers” Review of Law & Economics, 18(1), 143-178.
  • Yimga, J. (2022) “Code-sharing Agreements and Path Quality in the US Airline Industry” Transport Policy, 116, 369-385. https://doi.org/10.1016/j.tranpol.2021.12.021
  • Atems, B. and Yimga, J. (2021) “Quantifying the Impact of the COVID-19 Pandemic on US Airline Stock Prices” Journal of Air Transport Management, 97, 102141. https://doi.org/10.1016/j.jairtraman.2021.102141
  • Yimga, J. (2021) “Competition and Schedule Padding in the US Airline Industry” Review of Network Economics, 20 (1), 1-33. https://doi.org/10.1515/rne-2021-0016
  • Yimga, J. (2021) “The Airline On-time Performance Impacts of the COVID-19 Pandemic," Transportation Research Interdisciplinary Perspectives,  100386, https://doi.org/10.1016/j.trip.2021.100386
  • Yimga, J. (2020) “To Pad or Not to Pad? A Note on the Schedule Padding Behavior of Airlines," Applied Economics Letters, 1-8, DOI: 10.1080/13504851.2020.1866155
  • Yimga, J. (2020) “Price and Marginal Cost Effects of On-time Performance: Evidence from the US Airline Industry," Journal of Air Transport Management, 84, 101769. https://doi.org/10.1016/j.jairtraman.2020.101769
    • Best Paper Award at the 23rd Air Transport Research Society World Conference, Amsterdam,
      Netherlands, July 2019.
  • Yimga, J. (2020) “The Impact of Airline Code-sharing on Product Quality," Journal of Transport Economics and Policy, 54 (1), 1–20
  • Le, H. and Yimga, J. (2019) “Market Power and Marginal Cost Effects in Competing Markets: Evidence from Airline Mergers," forthcoming in Review of Network Economics. https://doi.org/10.1515/rne-2018-0024
  • Yimga, J. and Gorjidooz, J. (2019) “Airline schedule Padding and Consumer Choice Behavior," forthcoming in Journal of Air Transport Management, 78, 71-79. https://doi.org/10.1016/j.jairtraman.2019.05.001
    • Runner-up for the Best Paper Award at the 22nd Air Transport Research Society World Conf., Seoul, South Korea, July 2018.
  • Yimga, J. and Gorjidooz, J. (2019) “Airline Code-sharing and Capacity Utilization: Evidence from the US Airline Industry," Transportation Journal, 58(4), 280-308. https://doi.org/10.5325/transportationj.58.4.0280
  • Yimga, J. (2018) “Domestic code-sharing agreements and on-time performance: Evidence from the US airline industry," Transport Policy, 71, 14-27. https://doi.org/10.1016/j.tranpol.2018.07.006
  • Gayle, P. and Yimga, J. (2018) “How much do Consumers really Value Air travel On-time Performance, and to what Extent are Airlines Motivated to Improve their On-time Performance?" Economics of Transportation, 14, 31-41. https://doi.org/10.1016/j.ecotra.2018.01.003
    • Paper selected for press release, Transportation Research Forum.
  • Yimga, J. (2018) “Microfinance Expansion and its Effects on Cost Efficiency" In Press. The Quarterly Review of Economics and Finance, 69, 205-216. https://doi.org/10.1016/j.qref.2018.03.006
  • Yimga, J. (2017) “Airline On-Time Performance and its Effects on Consumer Choice Behavior," Research in Transportation Economics, 66, 12-25. https://doi.org/10.1016/j.retrec.2017.06.001
  • Yimga, J. (2017) "Airline Code-sharing and its Effects on On-Time Performance" Journal of Air Transport Management, 58, 76-90. http://dx.doi.org/10.1016/j.jairtraman.2016.10.001
    • Best Graduate Research Paper Award. Department of Economics, Kansas State University, 2016
  • Yimga, J. (2017) “Mitigating Loan Repayment Troubles during Microfinance Expansion: Evidence from a Large Panel," Journal of Economic Development, 42(2), 39.
  • Yimga, J. (2016) “The Impact of High Microfinance Growth on Loan Portfolio” Journal of International Development, 28, 697–714. DOI:10.1002/jid.3144

Book Chapter

  • Yimga, J. (2024). “Measuring the Risk of COVID-19 Spread via the US Air Transportation Network.” Forthcoming in Advances in Airline Economics, Volume 11, Emerald Group Publishing Limited. ISBN: 978-1-80455-505-7.https://doi.org/10.1108/S2212-160920240000011008

Book Review

  • Yimga, J. (2020). Review of “Airline Economics in Europe,” by Kevin Cullinane, Journal of Economic Literature, 58 (3): 793-803. DOI: 10.1257/jel.58.3.793


Conferences

  • 2024

    • 65th Annual Transportation Research Forum, Arlington, VA, April 4-5, 2024 – Presenter and Moderator

  • 2023
    • 26th Air Transport Research Society (ATRS) World Conference, Kobe, Japan, July 1-4, 2023 – Session Chair and Presenter

    • International Transportation Economics Association (ITEA) Conference, Santander, Spain, June 12-14, 2023 – Presenter

    • 87th Midwest Economics Association, Cleveland, OH, Mar. 31-April 2, 2023 - Presenter and Discussant 
    • 49th Annual Meeting of the Eastern Economic Association, New York City, NY, Feb. 23-26, 2023 – Presenter and Discussant
  • 2022
    • 92nd Southern Economic Association, Fort Lauderdale, FL, Nov. 19-21, 2022 – Presenter and Discussant
    • 25th Air Transport Research Society (ATRS) World Conference, Antwerp, Belgium (virtual), August 24-27, 2022 – Presenter
    • International Transportation Economics Association (ITEA) Conference, National School of Civil Aviation, Toulouse, France, June 13-17, 2022 – Presenter
    • 97th Western Economic Association Conference, Portland, OR, June 29-July 3, 2022 – Presenter and Discussant
    • 56th Canadian Economics Association, Carleton University, Ottawa, Canada, May 31 - June 4, 2022 – Presenter and Discussant 
    • 86th Midwest Economics Association, Minneapolis, MN, Mar. 25-27, 2022 – Presenter and Discussant
  • 2021
    • 91st Southern Economic Association, Houston, TX, Nov. 20-22, 2021 (in-person) – Presenter and Discussant
    • 58th Annual Meeting of the Missouri Valley Economic Association, Kansas City, MO (virtual), Oct. 14-16, 2021 – Presenter and Discussant
    • 24th Air Transport Research Society (ATRS) World Conference, Sydney, Australia (virtual), August 25-29, 2021 – Session Chair and Presenter
    • International Transportation Economics Association (ITEA) Annual Conference and School on Transportation Economics, Sapienza University of Rome, Italy (virtual), June 21-26, 2021 - Presenter
    • 54th Canadian Economics Association, Simon Fraser University, Burnaby, Canada (virtual), June 3-5, 2021 – Presenter and Discussant
    • 84th ​Midwest Econ Association, Virtual, Mar. 22-26, 2021 - Presenter and Discussant
  • 2020
    • 90th Southern Econ Association, New Orleans, LA, Nov. 21-23, 2020 - Presenter and Discussant (Virtual)
    • 46th Annual Meeting of the Eastern Economic Association, Boston, MA, Feb. 27-Mar. 1, 2020 - Session Chair and Presenter
  • 2019
    • 89th Southern Economics Association, Fort Lauderdale, FL, Nov. 23-25, 2019 - Presenter and Discussant
    • 23rd Air Transport Research Society World Conference,  Amsterdam, Netherlands, July 2 - 5, 2019 - Presenter 
    • 53rd Conference of the Canadian Economics Association, Banff, Canada, May 31-June 2, 2019 - Presenter 
    • International Conference on Social Science and Economics, Athens, Greece, March 9-10, 2019  - Presenter 
  • 2018
    • 22nd Air Transport Research Society World Conference, Seoul, Republic of Korea, July 2 – 5, 2018 - Presenter 
    • 59th Annual Transportation Research Forum, Minneapolis, MN, April 10 – 11, 2018 - Presenter 
    • WEI International Academic Conference, Barcelona, Spain, March 12 – 14, 2018  - Presenter 
  • 2017
    • 87th Annual Meeting of the Southern Economic Association, Tampa, FL, Nov. 17 – 19, 2017 - Presenter and Discussant
    • 21st Air Transport Research Society World Conference, Antwerp, Belgium, July 5 – 8, 2017 - Presenter and Discussant
    • 51st Annual Conference of the Canadian Economics Association, Antigonish, Nova Scotia, Canada, June 1 – 4, 2017 - Session Chair and Presenter
    • 43rd Annual Meeting of the Eastern Economic Association, New York, NY, Feb. 23 – 26, 2017 - Session Chair and Presenter
  • 2016
    • 53rd Annual Meeting of the Missouri Valley Economic Association, Saint Louis, MO, Oct. 27 – 30, 2016 - Presenter and Discussant
    • 80th Annual Meeting of the Midwest Economics Association, Evanston, IL, April 1 – 3, 2016 - Presenter and Discussant
    • 21st Annual K-State Research Forum, Kansas State University, April 2016 - Presenter
  • 2015
    • 52nd Annual Meeting of the Missouri Valley Economic Association, Kansas City, MO, Oct. 22 – 24, 2015 - Presenter and Discussant
    • 45th Annual Meeting of the Illinois Economics Association, Chicago, IL, Oct. 16 – 17, 2015 - Presenter
    • Inaugural Faculty Research Forum, Junction City, Kansas - Presenter
    • 20th Annual K-State Research Forum, Kansas State University, April 2015 - Presenter

ACADEMIC APPOINTMENTS

  • Associate Professor (w/ tenure), Embry-Riddle Aeronautical University-Prescott, AZ, 2022–present
  • Assistant Professor, Embry-Riddle Aeronautical University-Prescott, AZ, 2016-2022

OTHER ACADEMIC APPOINTMENTS

  • Visiting Professor of Aviation Management, Department of Aviation Services, Estonian Aviation Academy. Tartu, Estonia, August – December, 2023

ADMINISTRATIVE POSITIONS

  • Chair, School of Business, Embry-Riddle Aeronautical University-Prescott, AZ, January 2022–present
  • Program Chair, Aviation Business Administration, School of Busines, Embry-Riddle Aeronautical University-Prescott, AZ, August 2020–present
  • Program Chair, Business Administration, School of Business, Embry-Riddle Aeronautical University-Prescott, AZ, 2018-2019

CERTIFICATIONS

  • Remote Pilot, Small Unmanned Aircraft System (sUAS), Federal Aviation Administration. Date of issuance: January 12, 2023.
  • Senior Academic, Research Council, Advanced Air Mobility Institute (AAMI) – 2024 to present
  • Member, Board of Directors, Arizona Business Aviation Association (AZBAA) – 2023 to present
  • Member, Best Paper Award Committee, Air Transport Research Society (ATRS) – 2020 to present
  • Member, American Economic Association, 2011 to present

  • Member, Southern Economic Association, 2013 to present

  • Member, American Association of Airport Executives, 2021 to present

  • Best Paper Award Winner. 65th Annual Transportation Research Forum, Arlington, VA, April 4-5, 2024.
  • Outstanding and Overachieving Mentor and Advisor, AAAE Club, Embry-Riddle Aeronautical University, Apr. 2024.
  • Fulbright U.S. Scholar, Bureau of Education and Cultural Affairs, U.S. Department of State, Apr. 2023.
  • Scholar of the Year Award. College of Business, Security and Intelligence, Embry-Riddle Aeronautical University, Apr. 2023.
  • Scholar of the Year Award, $250. College of Business, Security and Intelligence, Embry-Riddle Aeronautical University, Apr. 2022.
  • Advisor of the Year Award Nomination, Department of Student Engagement, Embry-Riddle Aeronautical University, Apr. 2022.
  • Top Faculty Scholar Award Nomination, Phi Kappa Phi Honor Society, Mar. 2022.
  • Faculty Innovative Research in Science and Technology (FIRST) Grant, $4,635, Embry-Riddle Aeronautical University, May 2021.
  • ​Faculty of the Semester Award, Student Government Association, Nov. 2020.
  • Top Faculty Scholar Award, Phi Kappa Phi Honor Society, Feb. 2020.
  • Best Paper Award, $1,000. 23rd Air Transport Research Society World Conference, Amsterdam, Netherlands, July 2-5, 2019.
  • High-Performing Assistant Professor Award. Embry-Riddle Aeronautical University, 2019.
  • President’s Distinguished Merit Pay Increase for “excellent contribution” to the University. Embry-Riddle Aeronautical University, 2018.
  • Undergraduate Research Institute Grant, $1,200. Embry-Riddle Aeronautical University, 2019.
  • Runner-up for the Best Paper Award. 22nd Air Transport Research Society World Conference, Seoul, Republic of Korea, July 2 – 5, 2018.
  • Outstanding Researcher/Scholar of the Year. College of Arts and Sciences, Embry-Riddle Aeronautical University, 2018.
  • Paper Selected for Press Release. Transportation Research Forum, 2018. https://trforum.org/6581-2-3.
  • Undergraduate Research Institute Grant, $750. Embry-Riddle Aeronautical University, 2018.
  • Undergraduate Research Institute Grant, $2,700. Embry-Riddle Aeronautical University, 2017.
  • Undergraduate Research Institute Grant, $1,600. Embry-Riddle Aeronautical University, 2017.
  • Research Travel Grant, $1,900. College of Arts & Sciences, Embry-Riddle Aeronautical University, 2017.
  • Research Travel Grant, $1,500. Business Department, Embry-Riddle Aeronautical University, 2017.
  • Research Travel Grant, $1,200. Business Department, Embry-Riddle Aeronautical University, 2017.
  • Research Travel Grant, $1,100. Business Department, Embry-Riddle Aeronautical University, 2016.
  • Best Graduate Research Paper Award, $500. In recognition of outstanding commitment to and achievement in the study of economics, Economics Department, Kansas State University, 2016.
  • K-State Research Forum Award (1st Place), $500. In recognition of outstanding research presentation, Graduate Student Council, Kansas State University, 2016
  • Research Travel Grant, $600. Department of Economics, Kansas State University, 2016.
  • Diversity Excellence Grant, $500. In recognition of demonstrated interest, experience and ability in promoting cultural competency and diversity, College of Business Administration, Kansas State University, 2016.
  • M. Jarvin Emerson Award, $1,850. Awarded to a Ph.D. student for exceptional scholarship and potential for research, Economics Department, Kansas State University, 2015
  • Arts & Sciences Graduate Student Research Travel Grant, $800. Kansas State University, 2015.
  • Research Travel Grant, $500. Graduate School, Kansas State University, 2015.
  • K-State Research Forum Award (3rd Place), $125. In recognition of outstanding research presentation, Graduate Student Council, Kansas State University, 2015
  • “Tutors Make a Difference" Award, $300. Bestowed to a tutor whose work is exemplary and demonstrates a commitment to student success, Totally Tutoring, Kansas State University, 2014.
  • BA Cargill Diversity Grant, $1000. In recognition of demonstrated interest, experience and ability in promoting cultural competency and diversity, College of Business Administration, Kansas State University, 2013.
  • Academic Excellence Scholarship Award, $2,000. Recognizes outstanding academic achievement by a Master’s student, School of Business, Alabama A&M University, 2010.
  • Highest Academic Average Award. Awarded to graduate student with highest GPA in the MBA program, School of Business, Alabama A&M University, 2010.
  • Business Plan Competition Award. Awarded to a student for outstanding business plan presentation, School of Business, Alabama A&M University, 2010.