Title	Smart Secure and Energy Efficient Scheme for E-Health Applications using IoT: A Review
Author	Mamoona Humayun NZ Jhanjhi Malak Z Alamri
Citation	Vol. 20  No. 4  pp. 55-74
Keywords	Security Efficiency Healthcare IoT Sensors Energy-efficiency Base Station

Title	A Secure and Robust Mobile Payment System
Author	Abdullah Fahad Althumairy, Mohammed Al Shehri and Shaik Shakeel Ahamad
Citation	Vol. 20  No. 4  pp. 51-54
Keywords	Secure Mobile Payments, Key Management, confidentiality, authentication, Integrity, Replay attacks, impersonation attacks and Man-In-The-Middle attack

Title	Analysis of Social Network Comments Using Feature Selection and Random Forest Algorithms
Author	Hamid H. Hussien , Mubarak H.Elhafian and Ahmed Hamza Osman
Citation	Vol. 20  No. 4  pp. 43-50
Keywords

Title	A Novel Approach to the Iterative Method WCIP for Fast and Accurate Analysis of the Quasi- Periodic Lumped Circuits
Author	Mohamed Karim AZIZI Abdullah Alhumaidi Alotaibi
Citation	Vol. 20  No. 4  pp. 34-42
Keywords	WCIP method, quasi-periodic lumped circuits, auxiliary sources, simplified /extended equivalent model, S parameters, electric field distribution, directional coupler.