EV1-227, ext. 40108
gbulbul@uwaterloo.ca
Gülnaz joined GEM in 2024 after spending two years as an assistant professor at the Eskisehir Technical University, Faculty of Aeronautics and Astronautics. Her research focuses on Operations Research in aviation, particularly on optimization problems related to air transportation planning and scheduling. She develops models and solution methods for large-scale optimization problems. Additionally, Gülnaz's work spans various fields of aviation, addressing diverse aspects of sustainability. Her research emphasizes the development and application of data-driven analytical methods to enhance decision-making and drive impactful solutions.
Key Areas of Graduate Supervision
Sustainable Aviation, disruption management in aviation, airline and airport operations planning management, data analytics, decision analytics
Current Courses Taught
AVIA 310: Human Factors in Aviation
AVIA/GEOG 416: Aviation Sustainability
AVIA 417: Aviation Safety
Research Interests
My research focuses on advancing efficiency, resilience, and sustainability in the aviation industry, with a particular emphasis on Operations Research (especially optimization) and data analytics in aviation. By employing a variety of analytical tools, I aim to generate actionable insights that support informed decision-making in the dynamic and complex field of aviation. Currently, my research agenda centers on airline disruption management, where I develop mathematical models and solution methods to address recovery challenges arising from operational disruptions. In addition, I actively contribute to various aspects of aviation, applying data analytics to areas such as aviation safety and security, revenue management, and pilot performance evaluation, to enhance operational performance and decision-making processes. My overarching aim is not only to address immediate challenges but also to contribute to the long-term development of a more resilient, sustainable, and efficient aviation industry.
Recent Publications
Kasimbeyli, R., Bulbul, K. G., Soleimani, B., & Ozturk, G. (forthcoming). Computing the set of optimal points for nonconvex multi-objective optimization problems. Journal of Nonlinear and Variational Analysis
Bulbul, K. G., & Kasimbeyli, R. (2025). A new mathematical model and solution method for the asymmetric traveling salesman problem with replenishment arcs. Applied Mathematics and Computation, 494, 129278.
Ozdemir, E., Under, U., Bulbul, K. G., & Gerede, E. (2023). Adaptation and Validation of the Employer Attractiveness Scale for the Air Transport Industry: Attracting Future Employees. In Challenges and Opportunities for Aviation Stakeholders in a Post-Pandemic World (pp. 1-28). IGI Global.
Bulbul, K. G. (2022). A Necessity for Sustainability: Operational Resilience Through Disruption Management in Airlines. In Corporate Governance, Sustainability, and Information Systems in the Aviation Sector, Volume I (pp. 11-35). Singapore: Springer Nature Singapore.
Bulbul, K. G., & Kasimbeyli, R. (2021). Augmented Lagrangian based hybrid subgradient method for solving aircraft maintenance routing problem. Computers & Operations Research, 132, 105294.
Ergun, N., & Bulbul, K. G. (2019). An assessment of factors affecting airport security services: an AHP approach and case in Turkey. Security Journal, 32, 20-44.
Bulbul, K. G., & Ergun, N. (2017). Counterproductive work behavior in air transportation organizations: A study on airline cabin services. International Journal of Management Economics and Business, 13(2), 407-424.