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 411 for “"Using Time"”.
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Frequency Estimation Using Time-Frequency Based Methods
… the instantaneous frequency of signals using short sinusoid-like basis functions. Furthermore, it also shows that the proposed algorithm can be implemented in a popular embedded DSPmicroprocessor for practical use. This algorithm can also be implemented using more complex features on …
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Transfer function estimation using time-frequency analysis
… transfer function estimate despite noisy data, a time-frequency analysis approach to system identification has been developed. The method is based on the observation that for a linear system, an input at a given frequency should result in a response at the same frequency, and a time localized …
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Phase-locked loop using time-based integral control
This thesis explores the time-based techniques in the context of phase-locked loop (PLL) implementation. Many studies of the topic have been performed in the past. Functioning as an effective replacement of passive capacitors, time-based integrators using oscillators prove to be more area efficient …
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Compositional bounded reachability using time partitioning and abstraction
… global safety properties of the complete system using the reach sets of the components. Here, the components are only coupled through a shared time variable. Using a satellite system case study, we are able to show significant savings in memory and runtime computation costs for this approach. For …
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Probing cardiac calcium regulation using time-resolved optical spectroscopy.
… measurement of their physical interactions using optical spectroscopy. We have used time-resolved fluorescence resonance energy transfer (TRFRET) to determine the binding and distance distribution between the donor-labeled SERCA and acceptor-labeled SERCA-bound PLB in artificial membranes. …
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Pressure estimation using time-lapse seismic in compacting reservoirs
… attributes in compacting reservoirs. The time-lapse seismic signal in these types of reservoirs results from the combination of pressure depletion, rock compaction and stress redistribution within the reservoir and throughout the surrounding rocks. Simulations using iterative coupling are …
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Understanding and Modeling Taxi Demand Using Time Series Models
… and also help drivers to reduce their vacant time.</p> <p>This dissertation focuses on important factors affecting the demand. In the beginning, the impact of price changes on the demand is studied. Chapter One discusses how the seasonal effects and trends are removed from the demand, and then …
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Measuring built environment technology awareness using time-series analysis
… how these technologies are developed over time. "Built environment technologies" refers to technologies that impact the built environment, including architecture, construction, urban planning, and real estate. This study employs a "technology awareness metric" system to quantitatively trace …
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Unsupervised Time Series Anomaly Detection Using Time Series Foundational Models
The rapid generation of time series data across a wide array of domains—such as finance, healthcare, and industrial systems—has made anomaly detection a critical task for identifying irregular patterns that could signal significant events like fraud, system failures, or health crises. Traditional …
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HYSTAR: Hydrology and Sediment Transport Simulation using Time-Area Method
… of a watershed into the model. The time-area approach, with its intuitive and inherently distributed concept, provides a simple method to simulate runoff mechanisms. This study developed a distributed model based on the time-area approach with the goal of improved utility and …
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Using Time Series Models for Defect Prediction in Software Release Planning
… a high-quality software release, sufficient time should be allowed for testing and fixing defects. Otherwise, there is a risk of slip in the development schedule and/or software quality. A time series model is used to predict the number of bugs created during development. The model depends on …
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MONITORING INFILTRATION FROM NATURAL STORMS USING TIME-LAPSE ELECTRICAL RESISTIVITY TOMOGRAPHY
Time-lapse electrical resistivity tomography (TL-ERT) enables an accurate characterization of the heterogeneity of flow through the unsaturated zone especially when compared to point measurements taken within the same survey area. The most powerful tool for understanding the unsaturated zone is a …
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Inspection of Earthen Embankment Dams Using Time Lapse Electrical Resistivity Tomography
… surveys were conducted on the completed dams using a 56 electrode dipole-dipole array. The collected data was then processed using electrical resistivity tomography (ERT) imaging software and evidence of these two compromised zones was easily visible. Also, additional surveys were conducted in …
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Detecting coherent phonon wave effects in superlattices using time-domain thermoreflectance
… one layer of AlAs of 12 nm thickness are grown using MOCVD. The thermal conductivities of the SLs are measured using a transient thermoreflectance (TTR) technique at temperatures ranging from 30K to 300K. The results are the first-ever experimental evidence for the presence of coherent wave …
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Long-term creep modeling of wood using time temperature superposition principle
… curves) were developed from short-term data using the time temperature superposition principle (TTSP) for kiln-dried southern pine loaded in compression parallel-to-grain and exposed to constant environmental conditions (~70°F, ~9%EMC). Short-term accelerated creep (17 hour) and recovery (35 …
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Impact of missed beats on heart rate variability using time-frequency analysis
… this study analysis of missed beats is performed using time-frequency analysis. Some of the patient's data had missed beats. Fourier spectral analysis was first applied to the missed beats during the resting state. The impact of missed beats using Fourier spectral analysis is significant, …
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