164 results for “Overhead”

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Research ArticleOpen accessIn the abstractTopological Decoupled Group Key Management for Cellular NetworksJorge Estudillo Ramirez, Saul Eduardo Pomares Hernandez, Gustavo Rodriguez Gomez, Jose Roberto Perez CruzProblem statement: The continuous increasing capacity of the cellular networks motivates the development of multiparty applications, such as interactive mobile TV and mobile social networks. For these environments, security group services are required. A practical way to provide security services is by using cryptographic methods. However, the key management needed for these methods, which considers a dynamic group membership, introduces … …Journal of Computer Science, Vol. 7, Issue 3 · 9 Mar 2011 · 6,866 accessesView PDF Cite

Research ArticleOpen accessIn the abstractAn Effective Location-Based Power Conservation Scheme for Mobile Ad Hoc NetworksKhalid Kaabneh, Azmi Halasa, Hussein Al-BahadiliProblem statement: One of the major issues in current reactive routing protocols for Mobile Ad Hoc Networks (MANETs) is the high bandwidth and power consumptions during the routing process. In this study, we proposed and evaluated the performance of an efficient Location-Based Power Conservation (LBPC) scheme for MANETs. Approach: In this scheme, the transmitting node utilized the location-information of the … …American Journal of Applied Sciences, Vol. 6, Issue 9 · 30 Sep 2009 · 6,836 accessesView PDF Cite

Research ArticleOpen accessIn the abstractA Discrete Event Modeling and Simulation of Wave Division Multiplexing Unidirectional Slotted Ring Metropolitan Area NetworkH. A. Fua’ad, S. Shamala, M. Othman, Z. ZuriatiProblem statement: The lack of uniformity in the choice of simulation platforms for optical WDM networks stands behind the difficulty of developing a common simulation environment. Correlating WDM unidirectional slotted ring network to Discrete Event Simulation (DES) encompassing event definition, time advancing mechanism and scheduler has yet to be developed. Approach: The study focused on the proposed and the development … …Journal of Computer Science, Vol. 5, Issue 6 · 30 Jun 2009 · 6,680 accessesView PDF Cite

Research ArticleOpen accessIn the abstractA Student-Centered Learning ModelMihyar Hesson, Kaneez Fatima ShadBased on the authors experience in applying different approaches of active learning and student-centered teaching, the main problem that prevented the achievement of the full advantages of these approaches is the lack of motivation of students for self-centered learning. A new model for a student-centered learning is presented in this work. This model is of teaching integrative thinking, based on … …American Journal of Applied Sciences, Vol. 4, Issue 9 · 30 Sep 2007 · 9,423 accessesView PDF Cite