Huaizhu Oliver Gao

H. Oliver Gao

Howard Simpson Professor
Civil and Environmental Engineering
314 Hollister Hall
Director of Systems Engineering
Associate Director of the Cornell Program in Infrastructure Policy


Dr. Gao is a Professor in the graduate fields of 1) Civil and Environmental Engineering (Transportation Systems Engineering), 2) Systems Engineering, 3) Cornell Institute of Public Affairs (CIPA), and 4) Air Quality in Earth and Atmospheric Science at Cornell University. His research focuses on transportation systems, environment (especially air quality and climate change), energy, and sustainable development. He also studies sustainable food systems, quantifying and mitigating green-house gas emissions from food supply chains. He is a member of Transportation Research Board Committee on Transportation and Air Quality (ADC20), a member of Transportation Research Board Committee on Maintenance Equipment (AHD60), an academic member on the FACA Committee of US EPA MOVES model development, and a member (invited) on the editorial board of the international journal Transportation Research Part D: Transport and Environment. Gao received his graduate degrees (Ph.D. in CEE, M.S. in Statistics, and M.S. in Agriculture and Resource Economics) from the University of California at Davis in 2004, M.S. degree in Civil Engineering in 1999, and duel undergraduate degrees in Civil Engineering and Environmental Science in 1996 from Tsinghua University, China. Before joining Cornell, Gao was a quant in the mathematical and econometrical modeling division at the Rohatyn Group, LLG, a Wall Street hedge fund specializing in emerging markets.

Research Interests

Gao's research interests include transportation and environment/energy systems; mobile emissions inventory and air quality modeling; environment and energy impacts of alternative transportation (fuel, engine, infrastructure) technologies, methodological: statistics/econometrics, mathematical modeling & operations research, experimental; and environmental economics and complex networks of renewable energy supply chain.

Selected Publications

  • Stasko, Timon H., Oliver Gao. 2012."Developing green fleet management strategies: repair/retrofit/replacement decisions under environmental regulation."Transportation Research Part A: Policy and Practice46(8): 1216-1226.
  • Wang, Xun, Oliver Gao. 2011."Travelers' exposure to fine particle mass (PM2.5) and number concentrations in urban transportation environments in New York City."Transportation Research Part D: Transport and Environment16(5): 384-391.
  • Kamarianakis, Y., Oliver Gao, B. Holmén, D. Sonntag. 2011."Robust modeling and forecasting of diesel particle number emissions rates."Transportation Research Part D: Transport and the Environment16(6): 435-443.
  • Nicholon, Charles, Miguel Gomez, Oliver Gao. 2011."The Cost of Increased Localization for a Multiple-Product Food Supply Chain: Dairy in the United States."Food Policy36(2): 300-310.
  • Kamarianakis, Yiannis, Oliver Gao. 2010."Accounting for exhaust gas transport dynamics in instantaneous emission models via Smooth Transition Regression."Environmental Science and Technology44(4): 1320-1326.

Selected Awards and Honors

  • James and Mary Tien Excellence in Teaching Award(Cornell, College of Engineering)2010
  • Nomination: Kendall S. Carpenter Memorial Advising Award(Cornell University)2010
  • University of California Transportation Center Ph.D. Dissertation Award2004
  • NSF Future Engineering Education Scholars (EES) Award2002
  • Nortel Business Plan Competition Award, and IET International Fellowship1998


  • BS (Civil Engineering), Tsinghua University, 1996
  • BS (Environmental Science), Tsinghua University, 1996
  • MS(Civil Engineering),Tsinghua University,1999
  • MS(Statistics),University of California, Davis,2004
  • MS(Agriculture and Resource Economics),University of California- Davis,2004
  • Ph D(Civil Engineering),University of California- Davis,2004


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