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Hierarchical architecture is an effective scheme to make wireless sensor networks (WSNs) scalable and energy-efficient. Clustering the sensor nodes is a well-known two-layered architecture suitable for WSNs and has been extensively explored for different purposes and applications. In this paper a novel clustering approach called the adaptive competition-based clustering approach (ACCA) is proposed...
In recent years, chaotic systems have surfaced to become an important field in steganographic matters. In this paper, we present a simple cryptic-free least significant bits spatial- domain-based steganographic technique that embeds information (a color or a grayscale image) into a color image. The proposed algorithm, called cycling chaos-based steganographic algorithm, comprises two main parts: A...
Wireless Sensor Networks (WSNs) are usually constrained energy and bandwidth. Many solutions, like network clustering, have been proposed in order to overcome these limitations. While this solution is deemed efficient, the cluster-heads closer to the base-station would forward more data packets than farther ones, and thus their energy drains at a faster rate. In this paper, we propose an Energy- and...
Today wireless sensor networks (WSNs) emerge as a revolution in all aspects of our life. WSNs have special specifications of themselves that made them different from other networks. Fault tolerance is one of the most significant of many challenges in these networks. In this paper, we present a cluster-based fault tolerant protocol that utilizes from energy efficient technique for clustering. We propose...
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