Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Sink nodes"”.
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To Shift or Not To Shift: Maximizing the Efficiency of a Wireless Sensor Network Using Multiple Sinks
… problem. This is a problem since the sensor nodes closest to the sink node expend more energy because they send more messages, mostly for routing, than any other node on the network.</p> <p>This decreases the life of those sensor nodes and will lead to dead spots in the network. Having dead …
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Localizing Jammers in Wireless Networks
… affect networks in terms of signal strength, nodes' communication range, and network topologies, and present how to measure these jamming effects. To localize a jammer, we design an Adaptive Least-Squares-based (LSQ-based) algorithm which performs localization by exploiting the changes of …
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Dynamic duty cycle mechnism for mobility in wirless sensor networks
… Through receivers and transmitters, the sensor nodes send the data hop by hopto the sink node or base station, and these devices have a short-range and a very low frequency. Through a very precise complement, the sensors are small size but at the same time contain sensors as well as radio …
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An IoT enabled system for marine data acquisition and cartography
… Network (SANET) to 5G edge clouds connected to sink/base station nodes on shore. The sensory data is ultimately aggregated at a central cloud on the internet to produce up to date cartography systems. Several observations and challenges unique to the marine environment have been discussed and …
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Optimized FTR portfolio construction for market participants in a multi-period horizon
… in the direction specified by the FTR source and sink nodes. In this thesis, we extend the construction of an optimized FTR portfolio for a single period to more general settings. We propose a methodology to construct an optimized FTR portfolio for a market participant in a multi-period problem …
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Energy saving and reliability of wireless body area networks for health applications
… reliability are critical issues in WBSNs, as the nodes that are placed near the sink node consume more energy. All biomedical packets are aggregated through these nodes, forming a bottleneck zone. The nodes usually use small batteries and in the case of implantable devices; it is important to …
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Secure Networking and Efficient Computing in Unmanned Aerial Vehicle Assisted Green IoT Networks
… GIoT network where Energy Harvesting Nodes (EHNs) harvest renewable energy to sense and communicate within a GIoT network. UAVs function as mobile sink nodes to collect data from these EHNs and are equipped with cameras to implement computer vision models, aiding in intelligent route …
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Optimized FTR portfolio construction: the speculator's problem
… locational marginal price (LMP) differences of nodes over the many hours of the holding period are taken into account. In order to make the speculator's problem more manageable, we recast the problem into a form that allows us to exploit the salient characteristics of power systems, the …
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Machine learning and combinatorial methods for discrete optimization problems
… along a single path from its source to its sink node. As one of our main results, we prove that any multiflow in a series-parallel digraph can be expressed as a convex combination of unsplittable multiflows, where the total flow on any arc deviates from the given flow by less than the …
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Investigations into the physical layer of underwater networks to enhance channel capacity and performance.
… the underwater environment towards the floating sink nodes on the surface. This link is supported by optic fibre and artificial intelligence to connect source nodes to each other with smart functionality. This allows for source nodes to share information that enables them to co-ordinate …