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The size of grid systems has increased substantially in the last decades. Resource discovery in grid systems is a fundamental task which provides searching and locating necessary resources for a given process. Various different approaches are proposed in literature for this problem. Grid resource discovery using Web services is an important approach which has resulted in many tools to become de facto...
Target tracking is an important application type for wireless sensor networks (WSN). Recently, various approaches are proposed to maintain the accurate tracking of the targets as well as low energy consumption. Clustering is a fundamental technique to manage the scarce network resources. The message complexity of an application can be significantly decreased when it is redesigned on top of a clustered...
Due to the advancements in low cost embedded processors and wireless transmission technologies, wireless sensor networks have been commonly used in many civil and military applications. In this study, we propose a cluster based target tracking algorithm for targets moving rapidly in wireless sensor networks. In the existing studies found in the literature, the current leader node at time t predicts...
A synchronizer provides synchronous execution of asynchronous algorithms in an asynchronous network. We provide an architecture for a gamma synchronizer in a wireless sensor network. The sensor network is partitioned into clusters of connected sub-spanning trees by an algorithm described by Erciyes, K. et al (2008) in the first phase. Once the sub-spanning trees in the clusters are formed, the ring...
Wireless sensor networks (WSN) are large scale networks of sensors running on wireless environment. For an application running on a WSN, gathered data by the sensors are time critical in most of the cases. However, almost all the nodes suffer from a problem named clock drift. This problem causes clock difference among nodes as time goes because the processors do not run exactly at the same speed....
Implementation of synchronous algorithms in distributed systems in general is less troublesome than the implementation of asynchronous algorithms. Synchronizers provide synchronous execution of an asynchronous algorithm in distributed systems. In this study, we propose a gamma synchronizer for wireless sensor networks (WSNs). This synchronizer consists of alpha and beta synchronizers. In our work,...
Mobile ad hoc networks (MANETs) are videly in use in rescue, military operations, scientific and business areas. Many studies are addressed in MANETs because of their need to long lasting liveness, fault tolerance, dynamic addressing, collusion prevention, mobility management and security. Especially, self clustering, backbone construction and routing are the most interesting academic and industrial...
We propose a hierarchical connected dominating set (CDS) based algorithm for clustering in mobile ad hoc networks (MANETs). Our algorithm is an extension of our previous connected dominating set based clustering (CDSC) algorithm [1]. We extended the levels of the CDS to two levels and improved functionality at each level by providing additional rules to make sure that every node belongs to a single...
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