The purpose of this study was to explore the relationship between behavioral and emotional engagement of Iranian EFL learners and their attachment to their teachers. Both teachers’ and students’ perceptions of their relationships and students’ engagement have been taken into account. Questionnaire data provided by 311 EFL students and 70 EFL  teachers was used to investigate the relation betwee...

Social Adjustment and Academic Achievement of Female Children with Secure and Insecure Attachment Patterns E. Ghorbanian, M.A. T. PourEbrahim, Ph.D. P.S. Seyed Mousavi, Ph.D.   M. Habibi, Ph.D. This study was undertaken to compare social adjustment and academic achievement of female children with secure and insecure attachment patterns. The research type was descript...

The role of multiple antennas for secure communication is investigated within the framework of Wyner’s wiretap channel. We characterize the secrecy capacity in terms of generalized eigenvalues when the sender and eavesdropper have multiple antennas, the intended receiver has a single antenna, and the channel matrices are fixed and known to all the terminals, and show that a beamforming strategy...

This book gives an introduction to group key management protocols in different network settings. It can be recommended to early researchers in the areas of group key management, secure multicast and secure communication in sensor networks. The book discusses various security issues in group communications in a network-aware approach. However, it fails to show how to rigorously analyze group key...

Abstract—This work considers load-balance control among the relays under the secure transmission protocol via relay cooperation in two-hop wireless networks without the information of both eavesdropper channels and locations. The available two-hop secure transmission protocols in physical layer secrecy framework cannot provide a flexible load-balance control, which may significantly limit their...

In this paper, we propose a polar coding scheme for secure communication over the multiple-input, single-output, single-antenna eavesdropper (MISOSE) fading channel. We consider the case of block fading channels with known eavesdropper channel state information (CSI) and the case of fading channels with known eavesdropper channel distribution information (CDI). We use the artificial noise assis...