Mark Nook and Rob Denson Mark Nook is the president of the University of Northern Iowa. Originally from Holstein, Nook has committed his Midwest education and values to higher education for many years. He is dedicated to ensuring every member of the university community reaches their individual educational, professional and personal life goals. Rob Denson is the fourth president of Des Moines Area Community (DMACC). He grew up on a farm near Homestead, Iowa and graduated from high school in Marengo. Denson is the first native-born Iowan to be president of DMACC.