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 423 for “"measurement techniques"”.
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Shutter speed measurement techniques
Thesis (M.A.)--Boston University, 1949. This item was digitized by the Internet Archive.
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Rotating Vane Flow Measurement Techniques
… performance of vane flowmeter methods for the measurement of air and gas flow. To improve on existing rotating vane anemometer performance, a capacitance change vane sensing technique is investigated. In conjunction with Ower's dynamic equations steady state and step response measurements for a …
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ESD circuit design and measurement techniques
Part 1 of this thesis presents a method to measure sub-nanosecond reverse recovery in wafer-level test structures. The setup uses a transmission line pulse generator with a time domain through connection to measure the device under test current. The setup is then used to measure reverse recovery in …
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Simplified real-time PAH measurement techniques
… emissions has been hampered because existing PAH measurement techniques are slow, complex, and expensive. This study investigates two simple, inexpensive, real-time PAH measurement techniques which might be suitable for testing stoves. The first uses a device, called the "moving tape sampler" …
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A critical review of measurement techniques in coastal hydraulics
This thesis reviews measurement techniques in the field of coastal hydraulics. Techniques of wave measurement are studied in detail 1 and the analysis of wave measurements is then dealt with. Particular attention is paid to the analysis of one-dimensional wave energy spectra. Two computer programs …
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Investigation of Advanced Material Through Digital Volume Correlation Measurement Techniques
Composite materials are seeing increased industrial usage in high-performance applications were lightweight, high-strength, and material tailorability is required. Due to their heterogenous structure, displacement and strain fields developed under loading conditions are often complex and difficult …
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In-duct measurement techniques for the characterisation of broadband aeroengine noise
The focus of this thesis is the measurement of broadband fan noise, which due to reductions in tonal and jet noise, is now the dominant source at approach, and a major contributor at takeoff. This thesis proposes three new in-duct measurement techniques for the characterisation and measurement of …
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Testing New Weak Lensing Measurement Techniques With The Dark Energy Survey
… impact on the weak gravitational lensing measurements conducted with images taken during high wind. We then present the methods and validation of two new techniques in weak lensing shear and magnification measurement. We demonstrate highly accurate recovery of weak gravitational lensing …
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Anticipating system-level electromagnetic interference using numerical methods and measurement techniques
… both numerical modeling and experimental techniques are developed for anticipating system-level EMI at the early stage, and verified in a controlled laboratory environment"--Abstract, page iv.
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Electrostatic Discharge Protection and Measurement Techniques for Radio Frequency Integrated Circuits
In this research, ESD measurement techniques are also addressed. Two conventional ESD measurement systems are modified to improve the measurement capability for RF circuit characterization. One of the new measurement systems is capable of detecting ESD failures in RF circuits with an improved …
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Three-Dimensional Fluid Flow Measurement Techniques with Applications to Biological Flows
… plenoptic simulations combine lightfield imaging techniques with standard tomographic techniques and are shown to produce higher fidelity measurements than either technique alone. The tomographic PIV simulations are centered around testing software developed for processing large quantities of data …
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Evaluation of exhaust flowrate measurement techniques for a mobile emissions monitoring system
West Virginia University designed and developed Mobile Emissions Monitoring System (MEMS) for the six settling Heavy-Duty Diesel Engine (S-HDDE) manufacturers. The MEMS measures emissions concentrations while operating in a real world environment. The best method for measuring the emissions …
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Primary stability in cementless total hip replacement: measurement techniques and aided-surgery
… the angular readout into a linear displacement measurement, which is an information clinically relevant and simple to read in real-time by the surgeon. The second study reported in my thesis, concerns the evaluation of the possibility to have predictive information regarding the primary …
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A fresh soil health perspective: Soil health dynamics and improved measurement techniques
… and practitioners save resources when conducting measurements to assess soil health effects of agricultural practices. Further, this work also provides improved measurement techniques for useful soil health parameters like aggregate stability and soil respiration. These findings and innovations …
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Volatile organic compounds in the New England troposphere: Atmospheric chemistry and measurement techniques
<p>Atmospheric measurements made at Appledore Island, Maine were used to investigate nighttime nitrate radical (NO3) chemistry and its significance for the nitrogen oxides (NOx = NO + NO2) budget in the Gulf of Maine region during the summer of 2004 International Consortium for Atmospheric Research …
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The application of laser measurement techniques to the pneumatic transport of fine particles
The application of laser anemometry techniques to the measurement of local velocities and turbulence intensities is now well established for gas and liquid flows. In these situations, light from a low powered laser is scattered by seeding particles in the fluid which are small enough to follow the …
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Analysis of Trace Gas Heterogeneity using In-Situ and Remote Sensing Measurement Techniques
… this retrieval is not applicable to Mobile-DOAS measurements due to the lengthy measurement times. In addition, the requirement for rapid measurements for Mobile-DOAS application prevents a single instrument from retrieving information about the horizontal trace gas distributions around the …
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Hydrodynamics of trickle bed reactors (TBRS) packed with industrial catalyst using advanced measurement techniques
… (TBR) have been investigated using advanced measurements techniques of Gamma-ray densitometry (GRD) and Optical fiber probe and conventional measurement techniques of high-frequency differential pressure transducer and load cell. Two different reactor sizes of bench and pilot plant scale were …
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Development of measurement techniques for evaluation of inhibitors for controlling rebar corrosion in concrete
… rebar network on corrosion. Half-cell potential measurements were used to monitor the corrosion behavior of each specimen. In a second time, calcium nitrite, monofluorophosphate and sodium borate were evaluated for their capacity to control corrosion. The various corrosion inhibitors were tested …
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