Interest AreasDr. Tim's basic and applied research interests includes areas such as the development and application of computer simulation models, decision support systems, knowledge/data mining, virtual reality technology, environmental justice, and GIS-based technologies for watershed assessment, environmental planning, and natural resources management. His research group is concerned with modeling of eco-hydrological systems at several spatial scales and has developed state-of-the-science, simulation modeling interfaces and virtual environments for natural resource and environmental management applications. This research also includes methods to test model reliability, analyzing the effects of model and data uncertainty on predictability, and improving the usability of complex simulation models. Dr. Tim's current research is funded by government agencies including the Iowa Department of Natural Resources, the NSF, USGS, EPA, NASA, and the USDA-CSREES.
Brief BiographyHonors and Awards
Wakonse Faculty Fellow, 2004
Geospatial Solutions Applications Contest (First Place), with graduate student H. Bajwa, 2002
U.S. Secretary of Agriculture Medal, 2001
Selected PublicationsTim, U.S. 2006. Best practices in water quality modeling for decision making: Lessons from TMDL program. Journal of Water Resources Planning and Management.
Tim, U.S. and S. Sharma. 2006. Environmental forensics investigative methods applied to anthropogenic pollution from animal feeling operations (AFOs). International Journal of Environmental Forensics.
Bajwa, H. and U.S. Tim. 2006 (2005 submission). Virtual reality and virtual environments in hydrological and environmental science education. Journal of Hydroinformatics (still in review).
Deol, D.S. and U.S. Tim. 2006 (2005 submission). Interactive web-based simulation environment for watershed-scale water quality management. Journal of Water Resources Planning and Management (in the review process).
Wang, X. and U.S. Tim. 2006 (2005 submission). Problem-solving environment for evaluating environmental and agronomic implications of precision agriculture. Agricultural Systems (in process; submitted in 2005)
Eason, A., U.S. Tim, and X. Wang. 2004. Integrated modeling environment for statewide assessment of groundwater vulnerability from pesticide use in agriculture.
Pesticide Management Science, March 2004.
Tim, U.S. 2003. Water Quality in Precision Agriculture. Encyclopedia of Agricultural, Food, and Biological Engineering. New York, NY: Marcel Dekker, Inc.
Tim, U.S. 2006. Potentials and Limitations of modeling for pollutant load assessment and targeting: The HSPF Model. meeting of the Upper Mississippi River Sub-basin Hypoxia Nutrient Committee (UMRSHNC) Stakeholder Group, Moline, IL April 11-12.