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 92 for “"PVT"”.
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A PVT tolerant voltage-controlled oscillator for automotive applications
… under various process, voltage and temperature (PVT) conditions. By applying a voltage reference block, the output frequency of 0.5MHz, 0.75MHz, 1MHz or 1.25MHz can be obtained. In order to compensate for the variations at PVT corners, the trimming technology is applied to increase the accuracy. …
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Design of a water PVT system integrated into prefabricate concrete
I sistemi PVT sono dei collettori solari e fotovoltaici in grado di convertire simultaneamente l'energia solare in l'energia solare in energia elettrica. In generale , essi sono costituiti da pannelli fotovoltaici refrigerati per mezzo di un fluido temovettore. Per migliorare l'efficienza elettrica …
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Developing a General Method for Analyzing Psychomotor Vigilance Task (PVT) Data: Modeling Sleep Inertia in Children
… a method to model Psychomotor Vigilance Task (PVT) data which is a test to measure alertness and is commonly used in psychology. In particular, we focus on applying these methods to data from studies of measuring sleep inertia in children. We will start by looking at relevant methodological and …
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Performance analysis and modelling of hybrid photovoltaic-thermal solar panels
<p>A photovoltaic-thermal (PVT) panel was constructed, tested, and modelled using both MATLAB and TRNSYS. During the experimental testing, which took place on the Missouri University of Science and Technology campus in Rolla, Missouri; two identical PVT panels were tested alongside two PV panels to …
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Techno-economic comparison and environmental impact assessment of a hybrid photovoltaic thermal solar system and a thermosiphon solar thermal hot water system with electric back up element, under Windhoek, Namibian conditions
… heater (TS-SWH) and hybrid photovoltaic thermal (PVT) water heaters under Namibian conditions is limiting options available to decision makers on locally economic and opportune systems. This study compares the technical, economic aspects, and environmental impacts of TS-SWH and PVT water heaters. …
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Photovoltaic thermal water Systems - modelling and design considerations for residential applications in different climates and demand conditions
This Thesis presents the work of the author on PVT-water modules and systems as retrofits for existing households. Two computer models were developed in order to analyse and characterise PVT systems: one for steady state conditions, used for annual yield simulations, and a full transient model, …
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Performance Validity Testing in Baseline Concussion Assessment
… of a stand-alone performance validity test (PVT) in detecting suboptimal effort using an analog simulation design. Simulators demonstrated significantly lower performance on measures of verbal memory, visual memory, visual motor speed, balance, symptom severity, reaction time, and performance …
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Plastic scintillation spectrometry
… detectors. <br/>Here we review current PVT scintillators and present a range of techniques that optimise their characteristics. By combining these optimisations with Symetrica's spectral deconvolution and isotope identification software, PVT detectors were given isotope identification …
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Adaptive Blocker Cancellation For Wireless Receivers
… circuitry requires accurate calibration and PVT correction, a digital filtering ADC in the baseband is proposed that has a digitally defined transfer function that is highly reconfigurable and insensitive to PVT variations. A blocker adaptation algorithm is also presented that tracks the …
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Development of a hybrid solar photovoltaic and heat pump system for domestic heating and electricity generation
… tank volume and the water flow rate through the PVT are analysed. The system is modelled deploying quasi-steady state heat transfer and thermodynamic equations and validated by the experimental data. The analysis takes incremental time steps to solve for the fluid's temperature changes from the …
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Digitally-Assisted RF IC Design Techniques for Reliable Performance
… and wide dynamic range LNAs.</p> <p>Due to PVT variations in scaled technologies, RF phase shifter design becomes more challenging with device scaling. In the proposed self-calibration topology, we devised a novel phase sensing method and a pulsewidth-to-digital converter. The feedback …
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Defining the Construct of Malingered PTSD in Civil Litigation: A Confirmatory Factor Analysis
… and psychiatric-based factors, and (3) SVT and PVT-based factors. Consistent with prior research, it was found that the two-factor, SVT and PVT-based model demonstrated best fit with the data. These results suggest that practitioners should utilize a variety of methods when PTSD is alleged in …
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CFD Modeling and Optimization Analysis of Thermal Energy Storage Based Solar Collectors
… thermal performance of a photovoltaic-thermal (PVT) system. CFD analysis is performed to assess the effect of integrating PCM + Cu porous metal with the PVT system. In addition, during the simulation, a real-time transient solar radiation boundary condition is applied to accurately predict the …
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Robust Analog Circuit Parameter Optimization with Sampling-Efficient Reinforcement Learning
… circuits to process, voltage, and temperature (PVT) variations or suffer from low sampling efficiency to train algorithms. To address these critical limitations, this thesis proposes RoSE, the first Robust analog circuit parameter optimization framework with high Sampling Efficience by …
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Transport property equations-of-state for reservior fluids and dense gas mixtures
… relationship between the graphs of PVT and T灰P (and T竹P, 灰 denotes viscosity and 竹 denotes thermal conductivity respectively) is used to establish cubic equations-of-state for the predictions of transport properties over the entire PVT states, including dilute-gas viscosity, …
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Effect of canopy manipulation and fermentation on grape aroma components
… FVT and potentially free volatile terpenes (PVT) in one of three seasons. In the second separate three-year study, two to four leaves were removed from the fruiting zone of grapes grown on two training systems. Selective leaf removal increased sunlight penetration into the grape canopy but …
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A semi-empirical approach to modelling well deliverability in gas condensate reservoirs.
… measured pressure, volume, temperature (PVT) property data, together with static relative permeability correlations for simulation of well deliverability. To overcome the above limitations appropriate fluid property correlations required for prediction of well deliverability and dynamic …
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Experimental Study on Foamy Oil Flow by Using Different heavy Oil-Solvent Systems
… namely the Pressure-Volume-Temperature (PVT) system and the sandpack system, to investigate the effects of the pressure depletion rate on different heavy oil-solvent systems in bulk phase and porous media, respectively. Pure methane, pure propane, and a mixture of methane and propane were …
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Investigation of fluid properties at non-ambient conditions
… of diesel fuels was undertaken using a Micro-PVT apparatus at pressures to 300MPa in the temperature range 25 to 75°C. A new calibration procedure for this instrument was devised to enable measurements of high accuracy to be made. Viscosity measurements of diesel fuels over a range of …
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