Mathieu Dahan is an Assistant Professor in the H. Milton Stewart School of Industrial and Systems Engineering. His research interests are in combinatorial optimization, game theory, and predictive analytics, with applications to service operations management and disaster logistics. His primary focus is on developing strategies for improving the resilience of large-scale infrastructures — particularly, transportation and natural gas networks — in the face of correlated failures such as security attacks and natural disasters. Current projects include: (i) Strategic design of network inspection systems; and (ii) Analytics-based response operations under uncertainty.

Dr. Dahan received a Ph.D. and M.S. in Computational Science and Engineering from the Massachusetts Institute of Technology, a M.Eng. and B.Eng. from the École Centrale Paris, and a B.S. in Mathematics from Paris-Sud University. He is the recipient of the MIT Robert Thurber Fellowship, the MIT Robert Guenassia Award, the Honorable Mention for the J-WAFS Fellowships, and the Best Poster Award at the Princeton Day of Optimization.

During the summer of 2016, he worked as a research scientist intern at Amazon.com (Seattle) in the Supply Chain Optimization Technologies team. Using Machine-Learning techniques, he worked on predicting the fulfillment cost and developing a prototype to grant a fast and accurate access to future shipping cost estimates.

Dr. Beril Toktay is Regents' Professor and the Brady Family Chairholder in the Scheller College of Business. She serves as Executive Director of the Brook Byers Institute for Sustainable Systems. A globally recognized leader in sustainable operations management, Dr. Toktay has dedicated her career to bridging academic excellence with real-world impact in sustainability research and education.

Since joining Georgia Tech in 2005, Dr. Toktay has established herself as an influential leader in sustainability scholarship and cross-institute initiatives. She founded the Ray C. Anderson Center for Sustainable Business and co-created the Center for Serve-Learn-Sustain (SLS). Under her leadership as Executive Faculty Co-Director, the SLS team expanded sustainability-focused academic community engagement across Georgia Tech until its 2024 institutionalization as the Center for Sustainable Communities Research and Education within BBISS. Most recently, she co-chaired Georgia Tech's Sustainability Next Strategic Plan Implementation Team, under which Georgia Tech recommitted to growing BBISS, elevated and restructured the Office of Sustainability, and launched the Sustain-X startup accelerator, educational innovation and transdisciplinary research seed grant programs, the Climate Action Plan, and the Sustainability Education Curriculum Committee.

A Distinguished Fellow of the INFORMS Manufacturing and Service Operations Management Society, Dr. Toktay is internationally recognized for her research in sustainable operations management spanning circular economy models and climate mitigation strategies. Her circular economy research includes developing improved Extended Producer Responsibility cost allocation mechanisms recommended for adoption by the UK government. Her climate mitigation work features in a multi-university project that identified Georgia's top twenty decarbonization solutions, catalyzing the creation of the 70-member Drawdown Georgia Business Compact facilitated by the Ray C. Anderson Center.

Dr. Toktay serves on the boards of the New York Climate Exchange, Georgia Cleantech Innovation Hub, and Alliance for Research on Corporate Sustainability. Her former professional service includes VP for Marketing, Communications and Advocacy at INFORMS, Department Co-Editor for "Health, Environment, and Society" at Manufacturing & Service Operations Management and Area Editor for "Environment, Energy, and Sustainability" at Operations Research. She served as the Scheller College of Business ADVANCE Professor from 2012-2020.

Dr. Toktay’s research has earned recognition including being named among the World's Top Business and Management Scientists (Research.com, 2024),the  M&SOM Best Paper Award (2021), the M&SOM Responsible Research Award (2019), and the Management Science Best Paper in Operations Management Award (2015).

Her commitment to developing the next generation of sustainability leaders earned her Georgia Tech's Outstanding Doctoral Thesis Advisor Award (2018) and recognition as a E3 Impact Award Finalist (2019) by the Metro Atlanta Chamber of Commerce for Serve-Learn-Sustain's impact on Atlanta communities. She co-developed the Carbon Reduction Challenge, an interdisciplinary program that engages undergraduate students in climate intrapreneurship and which earned top ten finalist recognition from Reimagine Education among 1,184 projects from 39 countries.

Dr. Toktay holds a Ph.D. in Operations Research from MIT, an M.S. in Industrial Engineering from Purdue University, and B.S. degrees in Industrial Engineering and Mathematics from Bogazici University.

Dima Nazzal is a Principal Academic Professional in the H. Milton Stewart School of Industrial and Systems Engineering at Georgia Tech. She is responsible for project-based learning in the Industrial Engineering undergraduate curriculum, including the capstone senior design course, and the cornerstone junior design course. She is also research director of the Center for Health and Humanitarian Systems. Prior to joining Georgia Tech, she was Director of Research and Development at Fortna, Inc., an Engineering Design and Consulting company. 

Research: Her research focuses on modeling, design, and control of discrete event logistics systems, including healthcare delivery systems, manufacturing systems, and distribution systems. Her recent work has focused on election voting systems, higher education response to COVID-19, understanding and driving higher childhood vaccination rates in developing countries, modeling of collaborative robots in distribution systems; scheduling and dispatching policies in semiconductor manufacturing, and energy systems development. She has worked with companies, non-governmental organizations, and healthcare providers, including ExxonMobil, Emory University, Samsung, Emory University, Gates Foundation, and Walt Disney World. See here for relevant publications. 

Teaching: Dr. Nazzal enjoys teaching courses in manufacturing, warehousing, and facility logistics system design and operations, as well as advising senior design teams. She is the recipient of multiple teaching awards including the Georgia Tech Women in Engineering Outstanding Teacher Award in 2015, and the Most Outstanding Faculty Member Award from the University of Central Florida IIE Student Chapter in 2011. 

She received her Ph.D. in Industrial Engineering from Georgia Tech in 2006, her M.S. in Industrial Engineering from the University of Central Florida, and her B.S. in Industrial Engineering from the University of Jordan.