2004 :         Hongbo Yu, University of Tennessee
                    Spatio-temporal GIS Design for Exploring Interactions of Human Activities
                   [Published in CaGIS vol. 33, no.1]   

2005 :         Zaria Tatalovich, University of Southern California 
                    A Comparison of Thiessen Polygon, Kriging, and Spline Models
                    of Potential UV Exposure
                    [Published in CaGIS vol. 33, no. 3]

2007 :         Wenwu Tang, University of Iowa
                    Development of a Spatially Explicit Agent-based Simulation Package
                    for Modeling Complex Adaptive Geographic Systems