Title	An Efficient Algorithm for K-Rank Queries on Large Uncertain Databases
Author	Abdu Gumaei, Rachid Sammouda, and AbdulMalik S. Al-Salman
Citation	Vol. 17  No. 4  pp. 129-132
Keywords	Large uncertain databases, K-Rank queries, dominating vectors, Tuples, Instances.

Title	A Comparison of VoIP Performance Evaluation on different environments Over VPN Multipoint Network
Author	Adel Alharbi, Ayoub Bahnasse, and Mohamed Talea
Citation	Vol. 17  No. 4  pp. 123-128
Keywords	VPN multipoint, VoIP, Delay, Jitter, Packet loss, MOS, Simulation, Emulation, Security

Title	Scenarios for the Transition to NGN
Author	Negin Maleki, Hamed Shahbazi Fard* and Mahdi Movassagh
Citation	Vol. 17  No. 4  pp. 115-122
Keywords	Component, Migration Strategy, Migration Scenario, PSTN, IP, IMS, NGN.

Title	Analysis of Breakdown in New Stepgate Structures with Graded LDD
Author	Roji Marjorie S, Govindacharyalu PA, Lal Kishore K
Citation	Vol. 17  No. 4  pp. 106-114
Keywords	Stepped gate, breakdown voltage, LDMOS, LDD, carrier.