Ahmed Tijjani Abdullahi is a professor of Mechanical Engineering, who taught for many years at Ahmadu Bello University (ABU), Zaria. He was principal of the School of Technology, Kano (1976-9); Dean of the School of Engineering, Tafawa Balewa University, Bauchi (1984-88) and Rector of the Kaduna Polytechnic (1988-96). He capped this aspect of his career…