Col. D. L. Adams Assigned to N.U. Col. Donald L. Adams, 51 a veteran of service in Korea and 22 years in the Army Signal Corps. has been named chairman of Northeastern University's military science department. He assumes command of a 2800-cadet ROTC brigade, largest Army voluntary officer - producing unit in the nation. He comes to Northeastern after a three-year tour as signal officer for the 7th Corps in Stuttgart, Germany. He will serve here for three years.