Monday through Friday, WVXU News Director Maryanne Zeleznik cheerily announces it's a minute before 5 a.m. and leads into NPR's 'Morning Edition' and local programming. No spouse or roommate could be so chipper, and she doesn't flag audibly during the next five hours. It's not the perkiness of an ingenue but the confident sound of a village Wise Woman who enjoys her special knowledge and role.