FAYETTEVILLE, Ark. – Jackson Cothren and Jason Tullis, both professors of geography in the U of A's Department of Geosciences and both members of the Center for Advanced Spatial Technologies, are guests for Monday's Department of Crop, Soil and Environmental Sciences Seminar Series.

Their presentation is "Photogrammetric and remote sensing in emerging geospatial unmanned aircraft systems (UAS)."

They speak at 3:30 p.m. in Plant Science Building Room 009. The seminar is open to everyone on campus.

Cothren, who has been director of the Center for Advanced Spatial Technologies since 2003, has also been director of the Arkansas High Performance Computing Center since 2015. He earned his bachelor's degree in applied mathematics from the U.S. Air Force Academy in 1985, and a master's degree (2000) and Ph.D. (2004) in geodetic science and surveying from Ohio State University. His research focuses on geodetic and photogrammetric adjustment computations, uncertainty propagation in sensing systems, non-traditional sensor modeling and computer vision applied to overhead images.

As director of CAST, his interests have broadened to the general application of spatial data science to a wide variety of environmental and social problems.

Tullis earned his bachelor's degree in geographic information systems (GIS), remote sensing and botany from Brigham Young University, and his master's degree (2001) and Ph.D. (2003) from the University of South Carolina. His research focuses on remote sensing and GIS-assisted decision support for ecosystem services and on the application of provenance information in geographic problem solving.

About the Dale Bumpers College of Agricultural, Food and Life Sciences: Bumpers College provides life-changing opportunities to position and prepare graduates who will be leaders in the businesses associated with foods, family, the environment, agriculture, sustainability and human quality of life; and who will be first-choice candidates of employers looking for leaders, innovators, policy makers and entrepreneurs. The college is named for Dale Bumpers, former Arkansas governor and longtime U.S. senator who made the state prominent in national and international agriculture.

About the University of Arkansas: The University of Arkansas provides an internationally competitive education for undergraduate and graduate students in more than 200 academic programs. The university contributes new knowledge, economic development, basic and applied research, and creative activity while also providing service to academic and professional disciplines. The Carnegie Foundation classifies the University of Arkansas among only 2.7 percent of universities in America that have the highest level of research activity. U.S. News & World Report ranks the University of Arkansas among its top American public research universities. Founded in 1871, the University of Arkansas comprises 10 colleges and schools and maintains a low student-to-faculty ratio that promotes personal attention and close mentoring.