Title	A Hybrid Certificate Management for Mobile ad-hoc Networks
Author	Hemalatha Jai Kumari, A. Kannammal
Citation	Vol. 12  No. 6  pp. 62-68
Keywords	MANET, PKI, authentication, threshold cryptography, security

Title	Evaluation on Low-Carbon Urban Construction Dominance Level in China
Author	Zhitian Zhou, Duogui Yang, Lili Zhao
Citation	Vol. 12  No. 6  pp. 69-72
Keywords	low-carbon city, index system, evaluation

Title	Study of the estimation techniques for the Carrier Frequency Offset (CFO) in OFDM systems
Author	Saeed Mohseni, Mohammad A. Matin
Citation	Vol. 12  No. 6  pp. 73-80
Keywords	Carrier frequency offset (CFO), Orthogonal Frequency Division Multiplexing (OFDM), Inter Carrier Interference (ICI), CFO estimation, CFO compensation, OFDM performance and Doppler Effect (DE)

Title	Pattern Clustering via Ants Colony, Ward Method, Kohonen Maps
Author	Rosangela Villwock, Maria Teresinha Arns Steiner, Paulo Henrique Siqueira
Citation	Vol. 12  No. 6  pp. 81-92
Keywords	Data Mining, Metaheuristics, Ant-Based Clustering