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Dr. Robert Stewart

Specialties: geographic information science, risk analysis, spatial analysis, uncertainty analysis, decision support, environmental regulatory guidance, spatial data science
See Also: Oak Ridge National Laboratory, Spatial Analysis and Decision Assistance, Personal website, Curriculum Vitae


Robert Stewart’s research is focused on quantitative, computational methods particularly in the areas of geospatial and spatiotemporal modeling, with an emphasis on uncertainty, risk, and decision analysis. Areas of application have primarily centered on environmental pollution, risk, sample design, remediation, and associated implications for regulatory compliance. Recent activities include other geographical sciences such as population distribution and spatial epidemiology. Quantifying uncertainty and risk as well as understanding the implications of both for
decision making is a recurring theme in his work. He leads development of the Spatial Analysis and Decision Assistance (SADA) freeware program, serves as a reviewer for a number of professional journals, and is a member of the Association of American Geographers, the Society for Risk Analysis, and the International Association for Mathematical Geosciences.

Contact Information

Dr. Robert N. Stewart
Ph.D., University of Tennessee
Adjunct Associate Professor and Research Scientist at the Oak Ridge National Laboratory (ORNL)
Phone: (865)-574-7646
Fax: (865)-241-6261

In addition to his joint appointment at UT, he is also a full time research scientist in the Geographic Information Science and Technology (GIST) group at the Oak Ridge National Laboratory.

UT/ORNL Graduate Independent Study 593

Because I am a joint faculty member here in the Geography department with a full time appointment in the Geographic Information Science Group at the Oak Ridge National Laboratory (, I am pleased to offer independent studies where students can engage in R&D work informed by activities underway here at ORNL. Many ORNL projects deal with open source data and literature, spinning off a smaller creative projects that do not necessarily require travel to Oak Ridge. Much of the work can be conducted through remote meetings (e.g. email, conference call, and skype)  but we will meet in person a couple of times during the semester. While I am on campus from time to time, I do encourage at least one site visit to ORNL just to see what’s going on and to meet other staff and interns. Course content can range widely from cultural geography to advanced analytics. These projects can be completed as part of a normal 2-3 hour 593 independent study treated as a kind of “mini-internship.” The goal is to match students with opportunities that align with their interests, expand their abilities, and extend their professional networks.  Unfortunately, I can only accept 1-2 students each semester. If you are interested or just want to learn more email me at and tell me about your graduate study plans and your availability. My plan is to do this every semester so if timing is bad there’s always next semester.

Summer Internships (undergraduate and graduate)

I also mentor students in summer long internships through the SULI ( and HERE programs. These are limited paid internships and are in high demand. While I tend to mentor students with strong statistical and mathematical backgrounds there are many, many other kinds of opportunities here with other staff members. If you are interested, please fill out the application in advance noting particular deadlines. IMPORTANTLY – LET ME KNOW that your application is available for consideration. Otherwise it may go unnoticed.