BiographyHelena is a Professor at the Department of Marine, Earth and Atmospheric Sciences and the Center for Geospatial Analytics, North Carolina State University in Raleigh. She has participated in the GRASS GIS development since 1991 and co-authored the first book on GRASS GIS. She has developed methods and techniques for terrain analysis, geospatial modeling and visualization. She is a member of editorial boards for Geomorphology and Computers & Geosciences and has published over 80 publications demonstrating applications of GRASS GIS. She received her PhD from the Slovak Technical University, Bratislava, Slovakia.