PI, "Weighted Region Problems: Theory and Algorithms", NSF CISE-CCF, 2006-2009.

PI (with R. Serfling, co-PI), "Outlier identification and handling in computational geometry problems", NSF CISE-CCF, 2004-2006.

Co-PI (with G. Gupta, PI, and R. Prakash, co-PI), "Resources for research in scalable parallel computing and networking simulation", NSF CISE, 2001-2005.

PI, "Fast Algorithms for Computing Optimal Weighted Links and Trajectories", Clark Foundation Research Initiation Grants, Jan.-Dec. 2002.