Jules O Yimga

Title
Department Chair of School of Business and Associate Professor
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 School of Business. Jules received his Ph.D. in Economics from Kansas State University, his M.Sc. in Business Administration (MBA) from Alabama A&M University, and his B.Sc. 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
  • BA 395T: Comm Aspects of UAS Air Mobil
  • CEABA 396: Coop Avia Bus Administration

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. (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.

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.
  • American Economic Association, 2011-Present
  • Southern Economic Association, 2015-present
  • Missouri Valley Economic Association, 2013-Present
  • Midwest Economics Association, 2015-present
  • Best Paper Award Winner. 65th Annual Transportation Research Forum, Arlington, VA, April 4-5, 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