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.

Title	Designing a Question Bank Management System to Support Outcome-Based Education Approach
Author	Azida Zainol
Citation	Vol. 20  No. 4  pp. 21-33
Keywords	Outcome-based Education, Question bank management system, Bloom Taxonomy, Concept of map, Object oriented software development