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 20 of 96 for “"wireless sensor networks (WSNs)"”.
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Optimizing range aware localization in wireless sensor networks (WSNs)
The adoption of wireless sensor networks (WSNs) in numerous emerging applications have prevailed us to realize that smart living is no longer an imagination, it already exists. In emerging applications, localization is an essential function so that all the sensed information can be responded …
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An energy-efficient routing protocol for Hybrid-RFID Sensor Network
… about the condition of the objects they detect. Wireless sensor networks (WSNs), on the other hand provide information about the condition of the objects as well as the environment. The integration of these two technologies results in a new type of smart network where RFID-based components are …
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Improvement of non-uniform node deployment mechanism for corona-based wireless sensor networks
The promising technology of Wireless Sensor Networks (WSNs), lots of applications have been developed for monitoring and tracking in military, commercial, and educational environments. Imbalance energy of sensors causes significant reduction in the lifetime of the network. In corona-based Wireless …
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RF Harvesting System for Remotely Powered Wireless Sensor Nodes
Wireless sensor networks (WSNs) based on batteryless nodes have been attracting an increasing attention in the scientific and industrial communities. Energy to replace battery can be extracted from environmental sources such as vibration, solar, thermal, or provided by RF carrier of a power …
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Archimedean Screw Turbine Based Energy Harvester and Acoustic Communication in Well Site Applications
Wireless Sensor Networks (WSNs) has become increasingly important in the Oil and Gas industry. Despite the various advantages WSN has compared to the wired counter parts, it also faces some critical challenges in the oil fields; one of them is the power supply. The periodic replacement of batteries …
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Investigating the Performance of Honey Badger Algorithm for Multi-Hop Routing Wireless Sensor Network
… the demand for efficient and sustainable Wireless Sensor Networks (WSNs). Traditional algorithms often struggle with the NP-hard optimization problems introduced by complex systems, leading to interest in nature-inspired swarm algorithms. This study explores the use of the Honey Badger …
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Current Implementation of the Flooding Time Synchronization Protocol in Wireless Sensor Networks
… is an issue that affects data accuracy within wireless sensor networks (WSNs). This issue is due to the complex nature of the wireless medium and can be mitigated with accurate time synchronization. This research focuses on the Flooding Time Synchronization Protocol (FTSP) since it is …
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Utilization Of A Large-Scale Wireless Sensor Network For Intrusion Detection And Border Surveillance
… forces and destinations marked for apprehension. Wireless Sensor Networks (WSNs) are promising for border security surveillance because they enable enforcement teams to monitor events in the physical environment. In this work, probabilistic models have been presented to investigate senor …
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An Energy-Efficient Medium Access Control Protocol for Wireless Sensor Networks "V-MAC"
Wireless sensor networks (WSNs) are composed of hundreds of wireless sensors which collaborate to perform a common task. Because of the small size of wireless sensors, they have some serious limitations including very low computation capability and battery reserve. Such resource limitations require …
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Energy aware techniques for certain problems in Wireless Sensor Networks
… a tremendous amount of research in the field of wireless sensor networks (WSNs) due to their numerous real-world applications in environmental and habitat monitoring, fire detection, object tracking, traffic controlling, industrial and machine-health control and monitoring, enemy-intrusion in …
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Implementing Sink Mobility and Recharging Policies Using an Unmanned Aerial Vehicle
<p>Wireless sensor networks (WSNs) have been a topic of research for decades. Researchers have been exploring different uses for UAVs with their growing popularity. In this thesis I develop a wireless sensor network (WSN) and introduce the theoretical effects of an unmanned aerial vehicle (UAV) for …
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Energy-efficient information inference in wireless sensor networks based on graphical modeling
… model, to infer missing observations in wireless sensor networks (WSNs) for sustaining environmental monitoring. This enables us to effectively address two critical challenges in WSNs: (1) energy-efficient data gathering through planned communication disruptions resulting from …
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An agent based layered framework to facilitate intelligent Wireless Sensor Networks
Wireless Sensor Networks (WSNs) are networks of small, typically low-cost hardware devices which are able to sense various physical phenomenon in their surrounding environments. These simple nodes are also able to perform basic processing and wirelessly communicate with each other. The power of …
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Deployment Strategies and Mechanisms for Intrusion Detection In Wireless Sensor Networks
<p>Wireless Sensor Networks (WSNs) play a big role in many real life scenarios and are used in a wide range of applications. That includes military, industrial and civilian security and this requires stability, performance and affordability of WSNs. Deployment schemes of sensors play an important …
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An energy-efficient P2P protocol for validating measurements in wireless sensor networks
Wireless sensor networks (WSNs) should collect accurate measurements to reliably capture the state of the environment that they monitor. However, measurement data collected from one or more sensors may drift or become erroneous due to hardware failures or sensor degradation. In WSNs with remote …
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Group-based secure communication for wireless sensor networks
Wireless Sensor Networks (WSNs) are a newly developed networking technology consisting of multifunctional sensor nodes that are small in size and communicate over short distances. Continuous growth in the use of Wireless Sensor Networks (WSN) in sensitive applications such as military or hostile …
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A Suite of Fast and Efficient Cryptographic Mechanisms for Wireless Ultra-Low Power Device Networks
… even smaller, more mobile, autonomous devices. Wireless Sensor Networks (WSNs), Smart Dust, and Radio Frequency Identification (RFID) are several examples of this trend and have been applied to a large number of areas and will be more and more popular for various applications. Security is a …
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Key Management for Wireless Sensor Networks in Hostile Environments
Large-scale wireless sensor networks (WSNs) are highly vulnerable to attacks because they consist of numerous resource-constrained devices and communicate via wireless links. These vulnerabilities are exacerbated when WSNs have to operate unattended in a hostile environment, such as battlefields. …
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Energy optimization for wireless sensor networks using hierarchical routing techniques
Wireless sensor networks (WSNs) have become a popular research area that is widely gaining the attraction from both the research and the practitioner communities due to their wide area of applications. These applications include real-time sensing for audio delivery, imaging, video streaming, and …
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The performance evaluation of different logical topologies and their respective protocols for wireless sensor networks
Wireless sensor networks (WSNs) are at present a standout amongst the most, guaranteeing areas in the field of information and communication technologies (ICT). This new technology has boundless potential for various applications in distinctive regions, including environmental research, medical …
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