Working across a digital divide

' Holdouts like Ms. Donahue's boss may simply be trying to manage an important resource--their attention, says Daniel Mittleman, associate professor of computer science at DePaul University, whose research focuses on the role of technology in collaboration. Alexei Marcoux, 45, an associate professor of business ethics at Loyola University Chicago's Graduate School of Business, knew what he was getting into when colleague Al Gini invited him to collaborate on a hook. Mr. Gini, 66, professor of business ethics and chair of Mr. Marcoux's department, doesn't own a cell phone. Nonetheless, Mr. Gini points out, he manages to maintain his roles as a teacher, administrator, consultant, radio personality (he is a regular contributor to morning show "848" on WBEZ-FM/91.5), editor of an academic journal and author.