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 512 for “"Physics-Based"”.
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Physics-Based Li-Svo Cathode Model
<p>A cathode half cell physics-based model for a St. Jude Medical fabricated silver vanadium oxide (SVO) cathode coin cell battery was constructed. The model is based on a single particle Fick's second law approach with the open-circuit potential modeled with a Redlich-Kister equation. By assuming …
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Multiscale physics-based modeling of friction
… are required to capture and model essential physics of a frictional contact. However, such a detailed model is impractical in large-scale structural dynamics simulations; especially since frictional contacts can be numerous in a given application. Reduced-order models (ROMs) achieve broader …
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Physics-Based Statistical Learning in Thermoacoustics
… general. In this thesis, we propose to generate physics-based qualitatively-accurate reduced-order models, which are general, and then tune their parameters so that they become quantitatively accurate to describe the system under investigation. To do this, we use statistical learning techniques …
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Pushing with a physics-based model
… motion are difficult to measure. We derived a physics-based box pushing model and implemented a feedback-based pushing pipeline using the model. Experimental results show that our pushing model has fair predictive power and our pushing pipeline can reliably push the target to the goal. We …
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GPGPU-Enabled Physics Based Deformed Model Simulation
… and so on. However, the standard finite element based simulation is notorious for its expensive computation. To address this challenge, I present a GPU-based parallel implementation for simulating large elastic deformation. Classic modal analysis provides a set of orthonormal bases vectors, which …
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Physics-based aeroacoustic modelling of bluff-bodies
In this work physics-based modelling of bluff-body noise was performed with application to landing gear noise production. The landing gear is a primary contributor to airframe noise during approach. Noise is primarily generated from the unsteady pressures resulting from the turbulent flow around …
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Physics-based molecular modeling of recombination reactions
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-12-01
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Physics-based, reduced-order combustor flow modeling
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2002.
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Physics-based point placement by particle dynamics simulation
A physics-based approach to point cloud distribution for mesh generation is investigated using inter-nodal attraction and repulsion forces based on the Lennard-Jones pair potential and a simplified particle dynamics simulation. This method produces smooth distributions of points which accurately …
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Physics-based simulation of hyperelastic soft robot motion
The student, Kevin Wandke, submitted this Thesis for approval on 2022-04-27 at 10:20.
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Physics-based Security Analysis of Controller Area Network Protocols
… we develop software and hardware-based defense mechanisms that can detect attacks by exploiting timing, voltage, and motion information, where the hardware-based defense mechanism can also mitigate these attacks. We implement the attacks and demonstrate that the proposed defense …
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Physics-Based Artificial Intelligence Models for Vehicle Emissions Prediction
… formation during combustion. In this thesis, a physics-based artificial intelligence framework is developed to predict and analyze trends in engine-out NOx emissions of diesel and diesel-hybrid heavy-duty vehicles. This framework differs from black box machine learning models presented in …
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Physics based supervised and unsupervised learning of graph structure
Graphs are central tools to aid our understanding of biological, physical, and social systems. Graphs also play a key role in representing and understanding the visual world around us, 3D-shapes and 2D-images alike. In this dissertation, I propose the use of physical or natural phenomenon to …
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Physics-based modeling of 850 nm Tunnel Junction VCSELs
L'abstract è presente nell'allegato / the abstract is in the attachment
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Local tool wear profiles prediction using physics-based models
Thesis (Ph. D.)--Michigan State University. Mechanical Engineering, 2009
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Physics-based predictions of RNA loop stability and structures
… sequence. We aim to develop a novel free energy-based model for RNA structures, especially for RNA loops and junctions. One of the major roadblocks for the physics-based RNA tertiary structure prediction is the evaluation of the entropy for RNA tertiary folds. In particular, the entropies of …
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Physics-Based Compact Model Development of Field Emitter Arrays
Field Emitter Arrays (FEAs) - based cold cathodes have shown promise as electron sources in devices capable of high power and high frequency operation for a variety of applications such as microwave power amplifiers, pressure sensors, x-ray sources and high-power excimer lasers. Limited work has …
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Physics based modeling of urea selective catalytic reduction systems
… to three operating regions that are classified based on the relative NO, and NH3 concentrations. Within each region, parametric dependencies of the system on physical mechanisms are derived. A further model reduction is shown to be possible in each of the three regions resulting in a …
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Physics-based flame dynamics modeling and thermoacoustic instability mitigation
… modes were predicted by developing a model based on the acoustic and vortex time scales. A passive control strategy involving injection of steady air ow near the step in the cross-stream or streamwise directions were tested. Both injection configurations were able to suppress the instability …
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Exploratory physics-based turbulent flow modification using distributed computing architectures
… For incompressible flows, we present a novel physics-based control design for the selective modification of conserved flow quantities. In particular, we automatically identify forcing structures that selectively alter the energy and helicity of the flow, and the scales at which they are …
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