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 13 of 13 for “"through-wall"”.
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Cross-Frame Association of Through-Wall Handheld-Radar-Based Detections
… gestures [5] in low-light environments and through walls, cases where conventional vision-based systems fail. Most previous research has involved onsite (edge) gathering of data and offsite (non-edge) processing to produce detections, i.e. the experimental platforms have not been …
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Theoretical Parametric Study of Through-Wall Acoustic Energy Transfer Systems
… acoustic energy transfer (UAET) systems. Through-wall UAET systems are constructed of a transmitter bonded to a transmission elastic layer, which in turn is bonded to a receiver. The transmitter and receiver layers are constructed of a piezoelectric material. Piezoelectric materials behave …
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Wireless Sensing with Machine Learning: Through-Wall Vision & Contactless Health Monitoring
… their emotions. Since wireless sensors traverse walls, our sensors can deliver all of these functions through walls and occlusions. The key challenge in delivering the above contributions is that radio signals interact with people and the environment in complex ways, resulting in an …
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A methodology to investigate the cause of quenching in once-through tower type power plant boilers
… prone to thermal fatigue cracking as a result of through-wall temperature gradients during start up and shutdown. These temperature gradients can be significantly amplified during quenching when components at high temperature are unintentionally exposed to colder liquid or steam. Such quench …
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MRI Studies of Gas Hydrodynamics in Automotive Particulate Filters
… are measured, allowing calculation of the through-wall or filtration velocity. This provides data for comparison with 1D and 3D CFD models at a range of flow rates. The 3D CFD model is validated for modest Reynolds numbers and allowed parameters such as flow profile shape and wall friction …
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A micropower ultra-wideband RADAR profiling system
… along with discussion of preliminary "seeing-through-wall" experiments.
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Fluid Inclusion Evidence for Ore-Forming Solutions: Phoenixville, Audubon and New Galena Mine Districts, PA
… rocks of the Newark basin. Local fluid-wallrock interaction may have produced slightly higher salinity fluids (15-16 equivalent Wt. % NaCl) present at New Galena. The data obtained in this study suggest that igneous activity did not necessarily cause the development of the ore fluid as …
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Robust control of non-linear 2D and linear 3D disturbances in channel flow by surface transpiration
… and non-periodic channel flow is attempted through wall-normal transcription and point wall-shear-stress measurements. The transcription is applied in both continuous harmonic form and a system based on discrete zero-net-mass-flux panel-pair form. For 2D flow it is demonstrated by means of a …
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Synthetic aperture radar-based techniques and reconfigurable antenna design for microwave imaging of layered structures
… testing of layered composite structures, through-wall and medical imaging require more advanced imaging systems and image reconstruction algorithms (post-processing) suitable for imaging inhomogeneous (i.e., layered) media. Currently-available imaging algorithms are not always robust, easy …
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Impact of Liquefied Natural Gas usage and payload size on Hybrid Wing Body aircraft fuel efficiency
… specific energy, 17% lower skin friction drag through wall cooling on the wing bottom and 11-16% lower SFC through alternative cycles. Considerations were made for 1% insulation/fuel weight and 39% additional fuel volume but secondary systems and icing issues were not examined. Though …
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Electromagnetic Time-Reversal Imaging and Tracking Techniques for Inverse Scattering and Wireless Communications
… cancer detection, nondestructive testing, and through-wall imaging. In addition, TR has been extensively applied in UWB wireless communication providing myriad of advantages including reduced receiver complexity, power saving, increased system capacity, and enhanced information secrecy. In this …
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The simulation of fire growth and spread within enclosures using an integrated CFD fire spread model
… in which solid combustibles are involved through wall or ceiling linings. Gas phase combustion, radiation and solid fuel combustion are addressed in this study. At the heart of this study is the integration of the three sub-models representing the key elements mentioned above in …
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Thermoelectric Energy Harvesting in Harsh Environments and Laser Additive Manufacturing for Thermoelectric and Electromagnetic Materials
… domain. First, a self-powered wireless through-wall data communication system was developed for monitoring nuclear facilities, specifically spent fuel storage dry casks. These facilities require continuous monitoring of internal conditions, including temperature, pressure, radiation, and …