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462 articles for “node”
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Research ArticleOpen accessEvery word in the titleAcknowledgment based Reputation Mechanism to Mitigate the Node Misbehavior in Mobile Ad Hoc NetworksK. Gopalakrishnan, V. Rhymend UthariarajProblem statement: The cooperation between the nodes is essential to discover and maintain routes in mobile ad hoc network. Due to the presence of misbehaving nodes, the node cooperation is not always guaranteed as the nodes agreed during the route discovery phase. This phenomenon results in frequent network partitioning and it makes the routing process difficult. It also degrades the … …Journal of Computer Science, Vol. 7, Issue 8 · 14 Jul 2011 · 6,570 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleMisbehaving Node Detection in Mobile Ad Hoc Networks using Multi Hop Acknowledgement SchemeUsha Sakthivel, S. RadhaProblem statement: For any node in a Mobile Ad hoc Network conservation of battery power and bandwidth are the priority. Hence, they try to reduce the overload they would otherwise incur when they forward packets. This selfish behavior of a node affects the throughput of the network. The nodes may also choose a back off value of shorter duration. These … …Journal of Computer Science, Vol. 7, Issue 5 · 7 May 2011 · 6,714 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleMobile Ad Hoc Network Security for Reactive Routing Protocol with Node Reputation SchemeA. Suresh, Dr. K. DuraiswamyThe mobile node’s reputation in the Mobile Ad hoc Network (MANET) identifies its trust worthiness for secured multiple data communication. Unknown nature of the node’s communication status for initial period has great impact in the effective data transfer as MANET is self-organized and distributed. Problem statement: The functional operation of the mobile network relies on the trusty cooperation between the … …Journal of Computer Science, Vol. 7, Issue 2 · 25 Feb 2011 · 6,992 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleReliable and Efficient Broadcasting in Asymmetric Mobile Ad Hoc Networks Using Minimized Forward Node List AlgorithmMarimuthu Murugesan, Ammasai KrishnanProblem statement: Network wide broadcasting is a fundamental operation in ad hoc networks. In broadcasting, a source node sends a message to all the other nodes in the network. Unlike in a wired network, a packet transmitted by a node in ad hoc wireless network can reach all neighbors. Therefore, the total number of transmissions (Forwarding nodes) used as the … …Journal of Computer Science, Vol. 7, Issue 1 · 27 Dec 2010 · 7,580 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleHER2 Protein Overexpression in Infiltrating Ductal Carcinoma of the Breast Associated with Lymph Node InvolvementAdrienne Pratti Lucarelli, Maria Marta Martins, Vilmar Marques Oliveira et al.The current study compares the rates of overexpression of the HER2 protein in stage II ductal carcinoma of breast in patients with lymph-node involvement. The research material was tissue sections obtained from the primary tumor of 28 patients with lymph-node involvement. The technique used to detect the protein was immunohistochemistry. The overexpression of HER2 protein occurred in 33.3% of lymph … …American Journal of Applied Sciences, Vol. 6, Issue 3 · 31 Mar 2009 · 7,126 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleA Novel Unique Node Based Clustering and Location-Key Pair Based Security for Wireless NetworksT. R. Vedhavathy, M. S.K. ManikandanWireless ad hoc networks are used in emergency situations especially for surveillance and monitoring. The nodes in the ad hoc networks are self-organized and can accommodate by themselves with the available resources. The nodes are capable of random movement and hence there is no fixed infrastructure. The purpose of the ad hoc networks can be fulfilled only if all nodes … …Journal of Computer Science, Vol. 11, Issue 3 · 23 Apr 2015 · 6,435 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleNodes Density and Broadcast Management in Heterogeneous Environments of Mobile Ad-Hoc NetworksEssam Natsheh, Khalid BuraggaProblem statement: The research presented in this study looks into Mobile Ad-Hoc Networks (MANETs) environment that has varying node densities, called heterogeneous density environment. Such environment can be roughly associated with situations varying from areas struck by disasters to normal city environments. Approach: This study improved the performance of existing MANETs routing protocols by reducing the communication overhead incurred during … …Journal of Computer Science, Vol. 6, Issue 3 · 31 Mar 2010 · 7,332 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAn Improved TCP Connection Protocol over Wireless Mobile Networks with Mobile Nodes HandoffMaen M. Al AssafProblem Statement: This study proposes a TCP layer protocol (Div-TCP) that aims to give a solution for communication over wireless mobile networks that have the occurrence of handoff at anytime. It describes a topology of wireless mobile network and the handoff process as an ordinary process in that type of networks which may cause segments losses. Approach: Wireless mobile networks … …Journal of Computer Science, Vol. 4, Issue 8 · 31 Aug 2008 · 6,678 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleImmunological Response in Bovine Lymph Nodes Stimulated with Subunits VaccinesGabriel Andres Tafur Gomez, Marlene Isabel Vargas, Joaquin Hernan Patarroyo Salcedo et al.The vaccination process belongs to the public health intervention methodologies that help prevent infections. Vaccinations performed successfully in the history of medicine reported the significance of this procedure to increase the quality of life, prevent zoonoses and improve animal production. Vaccine emergence remained without exact rules for a long time, maintaining a close relationship with pathogens. However, subunit vaccines, with … …American Journal of Immunology, Vol. 9, Issue 2 · 20 Jun 2013 · 7,321 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleComparative Studies on the Performance of Low Power Transmitters for Wireless Sensor NodesT. Sasilatha, J. RajaProblem statement: Power consumption was one of the most challenging aspects to design low power wireless sensor nodes. The objectives of the study were to (i) Design low voltage, low power transmitters for wireless sensor nodes and (ii) Compare and analyze the performance of the transmitters. Approach: The transmitters employed direct digital modulation scheme to reduce the power consumption of … …Journal of Computer Science, Vol. 5, Issue 2 · 28 Feb 2009 · 7,453 accessesView PDFCite