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.

Title	Examining the barriers to the development of m-commerce in Iran (Case study: Saravan city)
Author	Hassan Nosrati Nahook (Corresponding author), Mehraab Amrashstaan , Reza Nourozi Ajirlo
Citation	Vol. 17  No. 7  pp. 241-246
Keywords	e-commerce, mobile commerce, mobile tools, technology challenges, business applications CIA