Title	New Analytical Model of Distributed Coordination Function
Author	Petr Kovar, Novont? V?t
Citation	Vol. 8  No. 12  pp. 125-129
Keywords	DCF, WI-FI, QoS, Collision Probability

Title	A Survey On Active Queue Management Mechanisms
Author	G.Thiruchelvi, J.Raja
Citation	Vol. 8  No. 12  pp. 130-145
Keywords	Active Queue Management, Congestion Control, Queue length, Link utilization, TCP, Non-TCP

Title	Context Repository Architecture for Smart Collaborative Environment
Author	S M Faisal, Mohammad Rezwanul Huq, A. S. M. Ashique Mahmood
Citation	Vol. 8  No. 12  pp. 146-153
Keywords	Context, Repository, Smart sensors, Smart Objects, Collaborative Environment

Title	An Adaptive Transcoding Method for H.264 Video Coding
Author	Soon-kak Kwon, Seong-woo kim, Jung-hwa Lee, Jong-min Lee
Citation	Vol. 8  No. 12  pp. 154-160
Keywords	Transcoding, Bitstream conversion, Bitrate control, Quantization step-size