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Geospatial Science and Human Security Division Scientific Advisory Committee

Group photo from left to right: Seth Spielman, Ken Rice, Kathleen Carley, Ayman Habib, May Yuan, Ryan Keisler, and Christopher Tucker
Dr. R. Michael Buehrer

Dr. R. Michael Buehrer

R. Michael Buehrer joined Virginia Tech from Bell Labs as an Assistant Professor with the Bradley Department of Electrical and Computer Engineering in 2001. He is currently a Professor of Electrical Engineering and is the Director of Wireless @ Virginia Tech, a comprehensive research group focusing on wireless communications.

His current research interests include position location networks, iterative receiver design, dynamic spectrum sharing, cognitive radio, communication theory, multiple input multiple output (MIMO) communications, intelligent antenna techniques, ultra wideband, spread spectrum, interference avoidance, and propagation modeling. His work has been funded by the National Science Foundation, the Defense Advanced Research Projects Agency, Office of Naval Research, and several industrial sponsors.


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Dr. Kathleen Carley

Kathleen Carley is a professor in the Engineering and Public Policy Department, Computer Science Department, and Social and Decision Sciences Department at Carnegie Mellon University. She is the director of the Center for Computational Analysis of Social and Organizational Systems (CASOS), a university wide interdisciplinary center that brings together network analysis, computer science and organization science ( and has an associated NSF funded training program for Ph.D. students. 


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Dr. Ayman Habib

Dr. Ayman Habib is a Thomas A. Page Professor of Civil Engineering, Co-Director of the Civil Engineering Center for Applications of UAS for a Sustainable Environment (CE-CAUSE), and Associate Director of the Joint Transportation Research Program at Purdue University.

He leads the Digital Photogrammetry Research Group (DPRG). The DPRG aims at becoming an acknowledged world-class center for education and research in the field of photogrammetry. As a part of its mission, the group looks to produce outstanding graduates who are well-prepared for successful careers in research as well as photogrammetry and Geospatial Information System (GIS) industries.


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Dr. Demetrice Jordan

Demetrice “Dee” Jordan is an Instructor in the Department of Global Health and Social Medicine. She holds a dual-PhD in Health Geography and Environmental Science and Policy from Michigan State University (MSU), a Master of Public Health in Global Health and graduate certificate in Global Infectious Diseases from Harvard T.H. Chan School of Public Health. Her research focuses on the spatial-ecological determinants of disease risk for vector-borne parasitic diseases and Neglected Tropical Diseases of sub-Saharan Africa and the tropics.

Dee also examines issues related to health equity, health disparities, social and environmental justice. She is a councilmember of the American Geographical Society (AGS) and the creator of the Celebrating Black Geographers anthology, hosted online by AGS.

Dee is the recipient of numerous awards and in 2020 she became the first graduate student recipient of the American Association of Geographers Enhancing Diversity Award.

She is a diversity, equity, and inclusion (DEI) consultant and offers strategic planning, educational and leadership development programs, and diversity, equity, and inclusion (DEI) training. Dee is the founder of the Advancing Geography Through Diversity Program (AGTDP), a cohort-based recruitment and retention program which seeks to address the persistent underrepresentation of African Americans, Latinx Americans, and Native Americans in US geography doctoral programs and provides fully funded graduate education opportunities.

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Dr. Ryan Keisler

Ryan is a physicist who has worked at the intersection of sensor data and data science for over 15 years. He is currently a Staff Data Scientist at KoBold Metals, where he uses his background in physics and data science to search for new deposits of battery metals. Previously, Ryan was the Chief Scientist at Descartes Labs, where he led a team of geospatial data scientists that blended physical and statistical modeling to provide solutions to a wide range of clients. Prior to that, Ryan worked in observational cosmology at the University of Chicago and Stanford University. His research focused on the cosmic microwave background and was driven by his involvement with the South Pole Telescope project in Antarctica. He holds a Ph. D. in physics from the University of Chicago, and degrees in physics and the Plan II honors program from the University of Texas at Austin.

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Dr. John Krumm

John Krumm graduated from the School of Computer Science at Carnegie Mellon University in 1993 with a PhD in robotics and a thesis on texture analysis in images. He worked at the Robotics Center of Sandia National Laboratories in Albuquerque, New Mexico for the next four years. His main projects there were computer vision for object recognition for use in robots and vehicles. He has been at Microsoft Research in Redmond, Washington, USA since 1997, and is currently a senior principal researcher. His research focuses on understanding peoples' location and how to use that information to benefit the user. In 2017 he received a 10-year impact award for a paper on location privacy from the ACM UbiComp conference, and another from the same conference in 2021. He is an inventor on 75 patents. Dr. Krumm was a PC chair for UbiComp 2007, ACM SIGSPATIAL 2013, and ACM SIGSPATIAL 2014. He is a past coeditor in chief of the Journal of Location Based Services. He currently serves as an associate editor for ACM Transactions on Spatial Algorithms and Systems and on the editorial board of IEEE Pervasive Computing Magazine. He is on the executive committee of ACM SIGSPATIAL and part of the Science Advisory Committee of the Geospatial Science and Human Security Division at Oak Ridge National Laboratory.

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Dr. Seth Spielman

Dr. Spielman is an Associate Professor of Geography at the University of Colorado and Senior Data Scientist/Manager at Apple Maps. His expertise is in maps, statistics, and machine learning. Recently, he won the Breheny Prize for the best paper in Environment and Planning, a data science competition, and was awarded a distinguished scholar award in Planning from the American Association of Geographers. 



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Dr. Christopher Tucker

Dr. Christopher Tucker manages Yale House Ventures, a portfolio of social ventures and technology companies that span the worlds of energy, geospatial, sensor, cyber-security, open source, and social media technologies, across the domains of defense/intelligence, international affairs, civilian government, commercial industry, NGOs, and academe. He is also the Chairman and CEO of The MapStory Foundation and President of the foreign policy advocacy group, Friends of the Arc.


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Dr. May Yuan

Dr. May Yuan joined UT Dallas’ School of Economic, Political and Policy Sciences in fall 2014 as a professor of geospatial information sciences (GIS) and is a fellow of the American Association for the Advancement of Science.

Yuan studies fundamental and applied GIS science by developing new data models and analysis methods to address environmental and social problems such as wildfire risk, tornado hazard, air pollution, offender monitoring, crime mapping and spatial cognition. Her recent work expands to spatial data science.

Yuan earned her bachelor’s degree in geography from National Taiwan University. She holds a master’s degree and a PhD in geography from the State University of New York at Buffalo.