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 78 for “"Field measurement"”.
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Road vehicle recognition and classification using magnetic field measurement
… collection system. The system measures magnetic field changes to count, detect, and classify passing vehicles into a number of vehicle types. We compare each vehicle using dynamic time warping (DTW), then extend Mel-Frequency Cepstral Coefficients to analyse the vehicles’ magnetic signals and …
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Ultrasound field measurement and modelling for non-destructive testing
… requires a complete knowledge of the ultrasonic field transmitted. Ultrasonic fields of circular probes have been studied experimentally using a miniature probe and theoretically with models developed to predict ultrasonic field of such a probe. Good agreement has been observed. In a fluid, the …
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The field measurement of suspended sediment in the surf zone
… Reference concentrations are evaluated from the field data. Two sampling systems to obtain these concentrations were designed and constructed. The Mark I sampler was used to collect the field data, whilst the Mark II sampler was extensively tested in the laboratory and the proposed operational …
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Field measurement of ideal saturation flow rate from the highway capacity manual
… local drivers. The purpose of this study is to field measure a sample of saturation flow rates, from which ideal saturation flow rates can be computed, in District 12-0 to determine the appropriateness of the lower ideal saturation flow rate. This study will scientifically test this hypothesis, …
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Optical Fiber Fabry-Perot Interferometer based Sensor Instrumentation System for Low Magnetic Field Measurement
… optical fiber based sensor system for the measurement of 3-dimensional vector magnetic fields. The operation of the sensor system is based on the detection of magnetostrictive dimensional changes in the sensor gage using a modified extrinsic Fabry-Perot Interferometer configuration. Because …
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Second Generation Data-Logging System for Long-Duration Field Measurement of Vibration Exposure and Grip Force
… be lost due to pre-software filtering and short measurement durations.</p> <p> Using surface mount components on a custom-designed printed circuit board, a portable device that captured full vibration waveforms over multiple force and acceleration channels was created. In this device, signals are …
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Field measurement of the fate of atmospheric H₂ in a forest environment : from canopy to soil
… temporal and spatial resolution of traditional field measurements. This thesis was designed to improve the process-based understanding of the H₂ soil sink with targeted field and lab measurements. In the field, ecosystem-scale flux measurements of atmospheric H₂ were made both above and below …
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On-Field Measurement of Head Impacts in Youth Football: Characterizing High Magnitude Impacts and Assessing Balance Outcomes
… head impact exposure in youth football. The on-field portion of this research investigated high magnitude head impacts that youth football players experience in games and practices. With previously validated data collection methods, linear and rotational head accelerations from head impacts were …
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Application of in situ full-field measurement in the transmission electron microscope: Mechanical property extraction from amorphous to crystalline materials
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-03-01 without embargo terms
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Examination of the Potential of Structure-from-Motion Photogrammetry and Terrestrial Laser Scanning for Rapid Nondestructive Field Measurement of Grass Biomass
… systems. Their ability to systematically collect measurements over larger spatial extents than those investigated here could greatly outpace the disc pasture meter’s predictive capabilities and speed.</p>
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Real-time Prediction of Dynamic Systems Based on Computer Modeling
… autonomous vehicle system and the full-field measurement system. For the cooperative autonomous vehicle system a novel parallel grid-based RBE technique is firstly proposed. The formulations are derived by identifying the parallel computation in the prediction and correction processes of …
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Measurement and application of near-field scan data: prediction of currents, radiated emissions, and probe characteristics
… dissertation examines the application of near field measurement techniques and analysis originally developed for the analysis of antennas to the specific case of electromagnetic compatibility"--Abstract, page iv.
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A study of the SA SKA RFI measurement systems
… findings of a study of the functionality of RFI Measurement System 2 that was conducted by the author. An in depth study of MEMO 37 (RFI Measurement Protocol) was employed first. After which, an exhaustive audit of all the equipment used and a thorough analysis of the method of data collection …
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Reel-to-reel Characterization towards Feedback Control in Manufacturing Long REBCO High-Temperature Superconducting Tapes
The thriving trend of large-scale, high-magnetic-field superconducting applications increases the demand for high-volume of uniform and high-performance REBCO tapes. This dissertation focuses on off-line and in-line characterization techniques for assessing the quality of long REBCO tapes. A …
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GIS Aided Radio Wave Propagation Modeling and Analysis
… wireless planning software is tested in a field driving test carried out in Montgomery County, VA. The performance of current wireless planning software is evaluated based on field measurement. The received signal strength data collected during this driving test are then analyzed in a GIS …
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A Modelling study of the atmospheric role of iodine in the Coastal Marine Boundary Layer
… of iodine species using results obtained from a field measurement campaign called POMORIS (Point Measurements of Reactive Iodine Species). These measurements were obtained from the coastal marine environment of Mace Head, Ireland in Summer 2007. The modelled results have shown that in such an …
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Spectroscopic Measurements of Magnetic Field and Electron Density on Wire Array and Laser Plasmas
Magnetic field and electron density distributions within plasmas are crucial parameters in the study of high energy density laboratory plasmas. These measurements are challenging because often the magnetic fields undergo significant spatial and temporal fluctuations. Of the few measurement …
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Nitrous oxide emissions under different corn field managements in the United States
… and motivated research efforts to identify field management techniques that best mitigate N2O emissions and reduce these negative environmental impacts. In this study, field N2O emissions were quantified during the 2016 growing season by direct field measurement from corn fields in …
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An assessment of the potential to use water chemistry parameters to define ground water flow pathways at Grand Canyon National Park, Arizona
… from September 1992 through September 1993. Field measurements (pH, electrical conductivity, alkalinity, temperature, total dissolved solids, and dissolved oxygen), major anion (fluoride, chloride, bromide, nitrate, phosphate, and sulfate) concentrations, selected trace element …
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