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 41 for “"Wireless Sensor Networks: WSN)"”.
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A new sinkhole attack detection algorithm for RPL in wireless sensor networks (WSN)
… improvement of science and technology, wireless sensor network technology has gradually been widely used, and provides great convenience for people's living, but with the continuous improvement of the degree of application, wireless sensor network security issues also enter people's …
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Energy efficient wireless sensor network protocols for monitoring and prognostics of large scale systems
<p>"In this work, energy-efficient protocols for wireless sensor networks (WSN) with applications to prognostics are investigated. Both analytical methods and verification are shown for the proposed methods via either hardware experiments or simulation. This work is presented in five papers. …
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Design & implementation of a wireless sensor prototyping kit
In recent years, wireless sensor networks (WSN) has become an active area of research among computer scientists. In this work, JONA, a prototyping kit for wireless sensors, will be described. The intention of this kit is to open WSN research to interested parties outside of the electrical …
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Optimized multi-superframe scheduling for clustered wireless sensor networks
Since the power source for wireless sensor networks (WSN) is mainly from batteries, prolonging network life is an important requirement of the network. Hence, clustering algorithms are employed to decrease the number of packets in the network via data aggregation as well to reduce packet network …
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The performance of directional flooding routing protocol for underwater sensor networks
… for the networking protocols. Underwater Wireless Sensor Networks (UWSN) and terrestrial Wireless Sensor Networks (WSN) share some common properties but their differences too. These differences necessitate specialized new protocols for successful underwater communication. In this thesis, a …
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Wireless sensor network planning with application to UWB localization in GPS-denied environments
Wireless Sensor Networks (WSN) have received much attention in the past 5 years, and much progress has been made in designing hardware, communications protocols, routing, and sensor fusion algorithms. The planning and deployment of the WSN, however, has been overlooked to a great extent. These are …
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Collaborative Position Location for Wireless Networks in Harsh Environments
… and networking performance for future commercial wireless systems. It is also the enabling technology for many control and sensing applications envisioned by the wireless sensor networks (WSN). Despite its meaningfulness and many algorithms being developed in the past several years, position …
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Development of software architecture for environmental monitoring using wireless sensor networks
… architecture for temperature monitoring using Wireless Sensor Networks (WSN). The goal of the software is to provide a means to remotely monitor and analyze temperature data in a closed environment. This architecture forms a building block to achieve the larger aim of energy management in built …
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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 directional preference ETX measure for the collection tree protocol in mobile sensor networks
There has been a growing interest in Wireless Sensor Networks (WSN) that utilizes mobile nodes for various purposes. These mobile wireless sensor networks tend to suffer from constant link breakages mainly caused by connected nodes moving apart, often moving very quickly. These lost connections …
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Acoustic data communication system for in-pipe wireless sensor networks
… necessitates the deployment of autonomous wireless sensor networks (WSN). This thesis proposes solutions for the communication and power units of a WSN for monitoring underground water pipelines. Regarding the communication unit, it is proposed to use the pipeline as an acoustic waveguide …
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Secure Minimum Time Data Collection (SMTDC) protocol for wireless sensor networks
… data collection duration and efficiency in wireless sensor networks (WSN). Due to the fixed trajectory and limited communication range, data collection is conducted using a many-to-one communication pattern known as convergecast. However, because of the confidentiality concern of data being …
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Comparative evaluation of various GPS-free localization algorithm for wireless sensor networks
Wireless Sensor Networks (WSN) are tremendously being used in different environments to perform various monitoring tasks such as search, rescue, disaster relief, target tracking and a number of tasks in smart environments. For example wireless sensors nodes can be designed to detect the ground …
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Accurate range free localization in multi-hop wireless sensor networks
To localize wireless sensor networks (WSN)s nodes, only the hop-based data have been so far utilized by range free techniques, with poor-accuracy, though. In this thesis, we show that localization accuracy may importantly advantage from mutual utilization, at no cost, of the information already …
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Localizatation estimation usign the technique of multi-sequence positioning
Wireless sensor networks (WSN) have been considered as promising tools for many location dependent applications such as area surveillance, search and rescue, mobile tracking and navigation, etc. In addition, the geographic information of sensor nodes can be critical for improving network …
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Wireless sensor networks and their industrial applications
Wireless Sensor Networks (WSN) represent a relatively modern concept which has captured the interest of many in the research community. Coupled with appropriate hardware, they offer great flexibility in terms of their applicability to solving real world problems. This can be seen with applications …
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Performance evaluation for different data encryption algorithms on wireless sensor network (WSN)
The Image Security primitives in the wireless sensor networks (WSN) are very energy intensive. Another problem in terms of energy consumption is added to the security of encrypted images transmitted by WSN sensor nodes. Therefore, the aim of the project is to analyse and evaluate various different …
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Dynamic duty cycle mechnism for mobility in wirless sensor networks
… the physical environments with the digital world Wireless sensing networks (WSN). There are several small sensor units through which small devices are created in which WSN is configured and can sense the physical environment properties such as heat, pressure, light, soil formation, location, and …
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Study of Techniques For Reliable Data Transmission In Wireless Sensor Networks
… addresses the problem of traffic transfer in wireless sensor networks (WSN). In such networks, the foremost challenge in the design of data communication techniques is that the sensor's transceiver circuitry consumes the major portion of the available power. Thus, due to stringent limitations …
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To Shift or Not To Shift: Maximizing the Efficiency of a Wireless Sensor Network Using Multiple Sinks
<p>Energy efficiency is a vital part of wireless sensor networks (WSN). Using correct techniques, we can improve the overall data throughput of the network and, at the same time, cut down the cost of running it. The efficient utilization of the life of the sensor node in a WSN is a critical …
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