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.
Results
Showing 1 to 20 of 32 for “"Physically consistent"”.
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Efficient and physically consistent electromagnetic macromodeling of high-speed interconnects exhibiting geometric uncertainties
We propose new methodologies to improve the current state-of-the-art in macromodeling techniques pertinent to the rational function interpolation of broadband electromagnetic responses of linear, passive, multiport, high-speed interconnect networks. First, we propose and demonstrate a new …
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Variationally consistent methods for Lagrangian dynamics in continuum mechanics
… linear and angular momentum, which lead to more physically consistent simulations.
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Advancing RIS Optimization: From Ideal to Realistic Models
… requires developing optimization strategies for physically consistent models of RISs which are efficient and largely independent of the problem structure. In this dissertation, we begin our investigation with the robust optimization of the ideal RIS with continuous control on its configurable …
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Behavioral Modeling of CMOS SPADs Based on TCAD Simulations
… methodology overcomes this drawback by pursuing physically-consistent models, i.e., models that take into account the SPAR inner structure and map the underlying physics on a VERILOG-A description. In the quest of this challenge, this Thesis proposes a workflow including the following points: …
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Method for Recharge and Sustainable Groundwater Use Estimation Using Soil Moisture Time-Series Analysis
… evaporation and drainage processes in a physically consistent, mathematically tractable framework. Using high temporal resolution in situ data from the ARM Southern Great Plains site, the method was calibrated and validated, showing that daily or sub-daily data capture the full shape of …
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The Relationship Between Atmospheric Circulation Patterns And Water Surface Elevation In Devils Lake, North Dakota: 1965-2010
… the two independent datasets show a small and inconsistent link between atmospheric circulation patterns and the water surface elevation changes. Some of the selected surge and drawdown years show physically consistent relationships to each of the datasets, but many of the results are …
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Deep Learning Emulators for Accessible Climate Projections
… of the future that visualizes climate data using physically-consistent deep generative vision models. The thesis contributions are framed in an envisioned online tool that rapidly emulates the city-scale impacts of various climate policies. In the future, such an emulator could accelerate local …
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Multivariate Time-Series Deep Learning for Short-Term Forecasting of Lost Circulation in Drilling Operations
… to address sensor noise, missing data, inconsistent sampling rates, and non-drilling intervals, resulting in a structured and physically consistent dataset suitable for time-series analysis. The prediction task is formulated as a supervised multivariate time series forecasting problem. …
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Training Physics-Guided Neural Networks with Multiple Constraints: An Application in Lake Ecology Modeling
… ability of machine learn- ing models to produce physically consistent predictions or generalize to novel conditions. As a result, many existing approaches rely on computationally intensive physics-biogeochemical simulations to supplement training data. Physics-Guided Neural Networks (PGNN) offer …
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Modeling the Effects of Sea-Level Rise on Flooding in the Lower Ozama River Basin, Santo Domingo, Dominican Republic
… The framework developed here provides a physically consistent basis for improving flood risk mapping and advancing scientific understanding of coastal and riverine flooding in the Dominican Republic.
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Physics-based and data-driven inversion of magnetotelluric data for subsurface imaging
… Gaussian process (EnsCGP), which produces physically consistent resistivity estimates and ensemble-based uncertainty within the span of a prior model space, with a residual neural network that learns structured corrections to the ensemble-conditioned solution while preserving …
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Characterization of Cooled Turbine Efficiency for Off-Design Performance Models
… treatment of cooling or service flows remains inconsistent, as these streams interact with the main flow in complex ways and their contribution to turbine work depends on how they are represented in performance models. The challenge is especially present in “black-box” approaches, where only …
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Intelligent robotics with digital-twin alignment : semantic navigation, manipulation, planning, and human-to-robot action transformation
… grid, generates smooth, interpretable, and physically consistent trajectories that remain tightly aligned with digital-twin simulation. KG-Transformer, a knowledge-guided semantic planner, leverages a lightweight digital twin to calibrate execution, veto unsafe behaviors, and autonomously …
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Initial Conditions and Collapse of Prestellar Cores
… equilibrium so that the resulting cores are physically consistent initial condition. During the collapse phase itself the contraction, fragmentation and heating of the gas is calculated. In the post-collapse phase accretion and the impact of interactions with other protostellar objects are …
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Aerothermodynamics and operation of turbine system under unsteady pulsating flow
… a simple modeling of volute storage effect. A physically consistent definition of ideal power that elucidates the role of unsteadiness in an unsteady turbine system is derived; it informs one on what the extractable power is compared to what it could be for an ideal system. Finally the findings …
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Seismic effects of the Caloris basin impact, Mercury
… effects of the Caloris impact by developing physically consistent structure models for Mercury and parameterized seismic source models for the Caloris impact. If the focused seismic body waves caused the disrupted terrain, then the amplitudes of the waves and the areal extent of surface …
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Estimating hydrologic fluxes, crop water use, and agricultural land use in China from multiple data sources
… data are susceptible to errors and can be physically inconsistent. China is an example of a large area where food demand is expected to increase and a lack of data clouds the resource management dialogue. Some assert that China will have insufficient land and water resources to feed itself, …
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Dosimetry calibration for low-energy protons produced in the ECU accelerator laboratory
… this work emphasizes the development of a physically consistent calibration strategy and a comprehensive validation methodology, forming a solid dosimetric foundation for current and future proton-based radiobiology studies at ECU.
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Statistical Quality Control Algorithm for In Situ Sea Surface Temperatures
… introduces three complementary strategies: (1) a physically motivated consecutive differences test to detect abrupt SST jumps, (2) a signal decomposition and correlation filter based on STL ("seasonal"-Trend decomposition using LOESS) to identify observations inconsistent with expected diurnal …
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Inference of electromagnetic system behavior in the presence of variability
… The generated S-parameters are shown to be physically consistent. The generation accuracy and efficiency of the proposed method are assessed through comparison to those of existing methods. When a system is decomposed into multiple subsystems, the dependency between responses of subsystems …
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