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 659 for “"sensor networks"”.
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Clustered wireless sensor networks
… study of topology in randomly deployed wireless sensor networks (WSNs) is important in addressing the fundamental issue of stochastic coverage resulting from randomness in the deployment procedure and power management algorithms. This dissertation defines and studies clustered WSNs, WSNs whose …
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Cognitive wireless sensor networks (CogWSNs)
Cognitive Wireless Sensor Networks (CogWSNs) are an adaptive learning based wireless sensor network relying on cognitive computational processes to provide a dynamic capability in configuring the network. The network is formed by sensor nodes equipped with cognitive modules with awareness of their …
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Information aggregation in sensor networks
Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2011-04-11T13:17:52Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 2 Kowshik_Hemant.tex: 305839 bytes, checksum: c635582333168c12ace32a61e311875f (MD5) Kowshik_Hemant.pdf: 814415 bytes, …
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Sensor networks for social networks
… of software that makes use of Bayesian belief networks and signal processing techniques to make meaningful inferences about real-world phenomena using data obtained from sensor networks. The effectiveness of the software is validated by applying it to the problem of detecting face-to-face …
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Distributed beamforming in wireless sensor networks
… to study the effectiveness of beamforming using sensor clusters for establishing a communication link to the UAV. Results showed that the antenna main lobe remained relatively unchanged in the presence of position errors and sensor node failures or when the density of the sensor nodes changed. …
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Towards Real-time Wireless Sensor Networks
Wireless sensor networks are poised to change the way computer systems interact with the physical world. We plan on entrusting sensor systems to collect medical data from patients, monitor the safety of our infrastructure, and control manufacturing processes in our factories. To date, the focus of …
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Angle constrained paths in sensor networks
… geometric graphs are not necessarily feasible in sensor networks and robotics. Paths with sharp-turn angles cannot be used by robotic vehicles and tend to consume more energy in sensor networks; In this thesis, we investigate the development of short-length paths without sharp-turn angles. We …
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Intrusion Detection In Wireless Sensor Networks
There are several applications that use sensor motes and researchers continue to explore additional applications. For this particular application of detecting the movement of humans through the sensor field, a set of Berkley mica2 motes on TinyOS operating system is used. Different sensors such as …
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Collaborative Estimation in Distributed Sensor Networks
<p>Networks of smart ultra-portable devices are already indispensable in our lives, augmenting our senses and connecting our lives through real time processing and communication of sensory (e.g., audio, video, location) inputs. Though usually hidden from the user's sight, the engineering of these …
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Decentralised control of wireless sensor networks
Wireless sensor networks are receiving a considerable degree of research interest due to their deployment in an increasing number and variety of applications. However, the efficient management of the limited energy resources of such networks in a way that maximises the information value of the data …
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On Barrier Graphs of Sensor Networks
<p>The study of sensor networks begins with a model, which usually has a geometric component. This thesis focuses on networks of sensors modeled as collections of rays in the plane whose use is to detect intruders, and in particular a graph derived from this geometry, called the <em>barrier …
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Energy-Efficient Tracking in Sensor Networks
… objects in an energy-efficient manner using a sensor network. The sensors in this network can enter an asleep mode where they conserve energy but are unable to help track the objects. We consider two assumptions for how the sleeping actions of the sensors are controlled. The first is to assume …
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Dynamic anomaly detection in sensor networks
… is in the context of anomaly detection in sensor networks used to monitor engineering systems. Sensor network related detection problems can vary significantly depending on the spatial evolution of the anomaly in the network as time progresses. Settings involving static anomalies, i.e., …
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Adaptive sampling in autonomous marine sensor networks
… adaptive and cooperative control of autonomous sensor platforms in a marine sensor network is described in the context of the autonomous oceanographic network scenario. This architecture has three major components, an intelligent, logical sensor that provides high-level environmental state …
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Application framework for wireless sensor networks [thesis]
Wireless Sensor Networks (WSNs) are based on innovative technologies that had revolutionized the methods in which we interact with the environment; i.e., through sensing the physical (e.g., fire motion, contact) and chemical (e.g., molecular concentration) properties of the natural surroundings. …
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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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Distributed Operating Systems on Wireless Sensor Networks
… that are adapted and applied to the wireless sensor network domain. These techniques are applied to the creation of a wireless sensor network operating system that allows complex applications to be created without special programmer knowledge of sensor network programming or architecture. The …
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Communication on limited-mobility underwater sensor networks
… this mysterious world. The field of underwater sensor networks is a means of monitoring these environments. However, underwater sensor networks are still fraught with challenges; one of the main challenges being communication. In this thesis we look to improve communication in underwater sensor …
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