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Enhanced Mutual Aid Packet Delivery in Wireless Infrastructureless Networks Scientia Research LibraryJournal of Engineering and Technology Research2348 - 04242024122 Prof. S.Krishnamoorthy,M.Punithavalli page no: 5-13 1 A coalitional game is developed to analyze the behavior of the rational mobile nodes for cooperative packet delivery. We consider the problem of cooperative packet delivery to mobile nodes in a hybrid wireless mobile network, where both infrastructure-based and infrastructure-less communications are used. A group of mobile nodes makes a decision to join or to leave a coalition based on their individual payoffs . The individual payoff of each mobile node is a function of the average delivery delay for packets transmitted to the mobile node from a base station and the cost incurred by this mobile node for relaying packets to other mobile nodes. We propose a solution based on a coalition formation among mobile nodes to cooperatively deliver packets among these mobile nodes in the same coalition. To find the payoff of each mobile node, a Markov chain model is formulated and the expected cost and packet delivery delay are obtained when the mobile node is in a coalition. Since both the expected cost and packet delivery delay depend on the probability that each mobile node will help other mobile nodes in the same coalition to forward packets to the destination mobile node in the same coalition, a bargaining game is used to find the optimal helping probabilities. After the payoff of each mobile node is obtained, we find the solutions of the coalitional game which are the stable coalitions. A distributed algorithm is presented to obtain the stable coalitions and a Markov-chainbased analysis is used to evaluate the stable coalitional structures obtained from the distributed algorithm. Performance evaluation results show that when the stable coalitions are formed, the mobile nodes achieve a nonzero payoff . With a coalition formation, the mobile nodes achieve higher payoff than that when each mobile node acts alone. http://www.scientiaresearchlibrary.com/archive-abs.php?arc=897http://www.scientiaresearchlibrary.com/archive/Enhanced Mutual Aid Packet Delivery in Wireless Infrastructureless Networks.pdf

Voice Recognition System for Improving Coordination of Emergency Services Work Scientia Research LibraryJournal of Engineering and Technology Research2348 - 04242024122 Piotr Kubiak page no: 1-4 1 There are many existing systems supporting emergency medicine services on the market. Unfortunately it is not possible to find any existing system that is controlled by voice, what would make the work much easier for paramedics. Therefore an idea was born to create such a system controlled by voice to support the communication of emergency medicine employees, a system that will recognize the human voice and decode it to a text format. If one would like to introduce a system of supporting emergency services that is controlled by voice, it is necessary to create an appropriate design. The aim of the project is to extend the variety of emergency services by creating the ability of turning the voice of a paramedic into a text format, which then will be send to an appropriate destination. The idea is as following: the voice of paramedic working on the site of the accident will be recorded, then it will be send to a computer equipped with a proper software by wireless connection, and then the voice will be turned to a text format using this software. Then another software will fill the medical card. According to the initial assumptions the system will be designed for the usage by volunteer emergency medicine groups, what is justified by lesser amount of duties fulfilled by these groups, when compared with vocational emergency services. The system may be used in any situation and anywhere if the technical conditions will be fulfilled. For volunteer emergency medicine groups these situations are usually one of the following: supporting mass events, searching for people in the terrain and collapsed civil engineering structures , natural disasters etc. http://www.scientiaresearchlibrary.com/archive-abs.php?arc=899http://www.scientiaresearchlibrary.com/archive/Voice Recognition System for Improving Coordination of Emergency Services Work.pdf