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Leader election is a very important problem in wired networks and mobile ad hoc networks. In this paper, we propose a leader election algorithm for hierarchy ad hoc network. For high-level ad hoc network, we adopt synchronous leader election algorithm plus a vice president mechanism. For bottom-level ad hoc network, we design an algorithm with the collision avoidance mechanism which can decrease the...
In this paper, a new framework is presented to analyze the dynamical alternans pattern in ECG. As the beginning work, a brief screening algorithm is described to decrease the time consumption for the framework.The electrical alternans, especially the T wave alternans (TWA), is considered as the danger symptom to sudden cardiac death (SCD). The current methods identifying TWA are reviewed summarily...
Wireless Sensor Networks (WSN for short) have been widely used for data collecting and processing in various applications. This paper studies the problem of how to efficiently realize matrix multiplication on a WSN. Based on a widely accepted model of WSNs, we show the lower bound on the number of parallel steps needed by any algorithm for ntimesn matrix multiplication on a WSN of n2 sensors with...
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