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 117 for “"Time measurements"”.
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An Analog Pixel Front-End for High Granularity Space-Time Measurements
L'abstract è presente nell'allegato / the abstract is in the attachment
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Development of a wearable blood pressure monitor using adaptive calibration of peripheral pulse transit time measurements
… existing devices only permit single 'snap-shot' measurements, while true arterial blood pressure fluctuates minute-by-minute, from night-to-day, etc. There is ample evidence that more intense blood pressure monitoring offers better clinical information. Moreover, the existing blood pressure …
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Development of a System for Real-Time Measurements of Metabolite Transport in Plants Using Short-Lived Positron-Emitting Radiotracers
… positron-emitting radiotracer techniques provide time-dependent data that are critical for developing models of metabolite transport and resource distribution in plants and their microenvironments. To better understand the effects of environmental changes on resource transport and allocation in …
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Burn time measurements of micron sized Al-Mg alloys and Mg in a heterogeneous shock tube in different oxidizing environments
… yields. Much of the research in present time has been focused on finding an energetic additive that can serve as a trigger in order to unleash its internal energy properly. Magnesium has been a preferential candidate due to its high temperature upon ignition, its porous oxide layer and …
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Detection and transit time measurements of individual sodium atoms diffusing in a helium flow by the laser resonance fluorescence correlation technique
… of the fluorescence bursts detected, the transit time for the diffusing atom is determined. This is the first measurement of the motion of a single atom in a buffer gas. A probability analysis was developed which allowed us to estimate the average burst size of emitted fluorescence photons by an …
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Bayesian Regression Inference Using a Normal Mixture Model
… and apply it to a dataset of differences in time measurement between two clocks. The dataset has ``good" time measurements and ``bad" time measurements that were associated with the two components of our mixture model. From our theoretical work we show that latent variables are a useful tool …
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Adaptive optimal control of AC/DC systems
… in an AC network. The control is based upon real-time measurements performed on the AC/DC system. Use is made of a technique for high speed accurate measurement of positive sequence voltages and currents, first developed in the field of computer relaying. The real-time measurements provides a term …
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Development of In-Plane Compliant Bistable Microrelays
… contact resistance study, contact-force measurements, switching time measurements, insertion loss, AC isolation, breakdown voltage, and DC isolation. This document also includes recommendations for further research.
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Effects of asymmetry on electron spin dynamics in gallium arsenide quantum wells
… asymmetric confinement potentials on spin lifetimes in quantum wells grown on (110)-oriented substrates. Inversion asymmetry in the presence of the spin orbit interaction offers the possibility of complete control of electron spin dynamics in GaAs quantum wells. Symmetry arguments predict any …
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Nuclear Magnetic Resonance of Platinum Catalysts: The Discovery of The Surface Resonance
… pronounced peaks. Using lineshape and relaxation time measurements coupled with other physical measurements, we can associate a low field peak in the lineshape structure with a single layer of platinum nuclei on the surface of the platinum particles, bonded to adsorbed atoms.
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NMR study of the unfolding of ribonuclease A, and dynamical studies of liquids in confined geometries
… NMR spectroscopy, spin-lattice relaxation time measurements, and the pressure-jump hydrogen-exchange method. It was found that the pressure denatured states of RNase A display some characteristics of a molten globule, and all three $\alpha$-helices and the $\beta$-sheet of the native …
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NMR investigations of ionic host polymer systems
… approach is the use of spin-lattice relaxation time measurements (I H, 7Li and 19F) to act as a probe of structure and dynamics. 19F spin-lattice relaxation time investigations in LiCF3S03 and PEO/LiCF3S03 systems are interpreted in terms of a mechanism in which the hindered reorientation of CF3 …
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The Advanced Traceability and Control system performance data analysis
… of this thesis is to determine the actual time measurements associated with the various steps of the Advanced Traceability and Control (ATAC) process to evaluate significant policy decisions such as the Defense Management Review Decision (DMRD) 901's "ship or hold" decision. As the first …
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Machine learning in ocean applications : wave prediction for advanced controls of renewable energy and modeling nonlinear viscous hydrodynamics
… a framework that how we can use data from real-time measurements or data gathered from experiments and field tests and simulations to provide an alternative approach for physical modeling or practical engineering solutions.
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The effect of modular acoustics on a performer's perception in multi-use (symphonic and operatic) concert halls
… and vocal musicians? Reverberation times in the Rogers Center auditorium in Andover, MA were taken onstage with the hall's acoustical curtains either hidden or exposed. Performers in the school musical and in a local symphony group were given surveys after doing two rehearsals in the …
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Optical Resonators and Fiber Tapers as Transducers for Detection of Nanoparticles and Bio-Molecules
… of the smallest particle/molecule with the real time measurements. In this work, bio-sensing capabilities of toroidal optical resonators are investigated. Bio-sensing is realized via measuring the analyte-antigen interaction while the antigen is immobilized through a novel functionalization …
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Storage effects: the relationship between the hydrological dynamics of small infield pools and plant functional groups
… I investigated the habitat quality with a time series model which requires only the climatic time series evapotranspiration and precipitation and an observed daily water level time series. Further, I developed transfer function to describe mean drying up frequencies and mean spring high …
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The effects of video self-modeling on walking skills of preschoolers using walkers
… every day for at least five days. During this time, measurements of the number of independent steps taken by the children were recorded by the researchers on a self-made chart. This data collection continued for five more days after the last child stopped watching their video. The data from the …
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An assessment of deep cyber-physical situational awareness of power system using real-time testbed
… this research develops an effective and real-time technique to identify FDIA attacks in smart grids. We expose the existing vulnerabilities associated with existing detection techniques and analyze the performance of the proposed solution to detect and defend FDIA attacks against real-time …
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