BLACKSBURG, Virginia, Oct. 31 -- Virginia Tech issued the following news: Jay Mancini, professor emeritus and former head of the Department of Human Development and Family Science at Virginia Tech, passed away on Oct. 10. He was 75 years old. Mancini joined Virginia Tech in 1977 as an assistant professor, and he served as department head from 1989-96. In 2009, after 32 years at Virginia Tech, he moved on to the University of Georgia as department head of Human Development and Family Science a  more