Computer Science Dept, University of North Carolina at Charlotte, Charlotte, NC 28223, USA. kthom110@uncc.edu|Computer Science Dept, University of North Carolina at Charlotte, Charlotte, NC 28223, USA. kthom110@uncc.edu|Computer Science Dept, University of North Carolina at Charlotte, Charlotte, NC 28223, USA. kthom110@uncc.edu|Computer Science Dept, University of North Carolina at Charlotte, Charlotte, NC 28223, USA. kthom110@uncc.edu