Title	A Testbed for the Evaluation of Multi-Context Trust Models in Open Multi-Agent Systems
Author	Mifrah Youssef, En-Nouaary Abdeslam1 and Dahchour Mohamed
Citation	Vol. 17  No. 7  pp. 273-280
Keywords	trust, reputation, testbed, multi-agent systems.

Title	MORoles: An Abstract Hierarchy Model for Managing Overlapping Security Roles
Author	Ahmad Mousa Altamimi
Citation	Vol. 17  No. 7  pp. 267-272
Keywords	Security Policies, Privacy, Overlapping, Roles Hierarchy

Title	Performance Analysis of Millimeter Wave in Satellite-Earth Systems
Author	Shakeel-ur-Rehman, Muhammad Ammar Tauqir and Muhammad Iqbal
Citation	Vol. 17  No. 7  pp. 258-266
Keywords	Atmospheric attenuations, ITU-R model, Rain Fade, Cloud attenuation, Millimeter wave.

Title	MLC-MAC: A Multi-Layered Cluster-based MAC Protocol to Reduce Competition and Traffic in Wireless Sensor Networks
Author	Azra Moosavi, Saeed Sabamoniri
Citation	Vol. 17  No. 7  pp. 247-257
Keywords	Collision, Delay, Medium Access Control, Wireless Sensor Network.