Duty-cycle medium access control directional wireless sensor networks / Fernaz Narin Nur Nur, Fernaz Narin Wireless communications 004.6 NUD Thesis (Ph.D.)--Department of Computer Science and Engineering, University of Dhaka, Session: 2016-2017. Bibliography: p. 109-123 Dhaka : University of Dhaka, 2017 2017 2017 Text [4], xiii, 130 p. : eng