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2026

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Diffusion Behavior Of Uranium Fission Products In A Centrifugal Nuclear Thermal Rocket, Mitchell Schroll Jan 2026

Diffusion Behavior Of Uranium Fission Products In A Centrifugal Nuclear Thermal Rocket, Mitchell Schroll

Dissertations

Centrifugal nuclear thermal rockets (CNTR) are an advanced concept engine first proposed in the 1950’s that would allow for specific impulses of up to 1800 seconds. A major difference in this engine is that the liquid fuel allows for fission products to move through the fuel layer and even exit out of the reactor completely. This dissertation seeks to answer the question, how does the migration of fission products within a centrifugal nuclear thermal rocket affect its operation and performance?” To accomplish this a reduced order model was developed to simulate and track the fission products generated during the firing …


An Incremental Approach For Recovering Decompiled Variable Data Types Using Graph Neural Networks With Learned Confidence Estimates, Caleb Stewart Jan 2026

An Incremental Approach For Recovering Decompiled Variable Data Types Using Graph Neural Networks With Learned Confidence Estimates, Caleb Stewart

Dissertations

When software is compiled into machine code, the high-level data types defined in the original source code are lost. Binary type inference is the process of attempting to recover these high-level data types from compiled binary code. This dissertation investigates binary type inference using graph neural networks (GNNs) to predict data types for decompiled variables. The study is organized into three phases. Phase one presents DRAGON, a GNN model that predicts simple data types for decompiled variables using input graphs derived from decompiled abstract syntax trees (ASTs). DRAGON also produces confidence estimates indicating the degree of faith the model places …


Diffusion Of Excitons In Thin Films Of Quantum Dots, Dustin Roberts Jan 2026

Diffusion Of Excitons In Thin Films Of Quantum Dots, Dustin Roberts

Dissertations

Quantum dots are heavily used in modern devices, such as consumer television screens, lasers, medical sensors, solar cells, and quantum computing. Their tunability and photo-stability make them candidates for a variety of applications which formerly required either dyes or significant amounts of band structure engineering. Despite all of the current and active applications, there is a gap in the current literature with regards to how energy is transported through thin films of quantum dots, and what methods may be used to control transport direction and range. The goal of this dissertation is to help fill those gaps, towards the end …


Effect Of Density Irregularities On Radio Frequency Wave Propagation In Ionospheric Plasmas, Eun-Hwa Kim, Jay Johnson, Syun'ichi Shiraiwa, Nicola Bertelli, Masayuki Ono, Simon Wing Jan 2026

Effect Of Density Irregularities On Radio Frequency Wave Propagation In Ionospheric Plasmas, Eun-Hwa Kim, Jay Johnson, Syun'ichi Shiraiwa, Nicola Bertelli, Masayuki Ono, Simon Wing

Faculty Publications

No abstract provided.


Low Frequency Oscillation Observed In The Ionosphere Around The Substorm Onsets, Simon Wing, Elmer Rivera, A. J. Hull, P. A. Damiano Jan 2026

Low Frequency Oscillation Observed In The Ionosphere Around The Substorm Onsets, Simon Wing, Elmer Rivera, A. J. Hull, P. A. Damiano

Faculty Publications

No abstract provided.


Investigation Of Causal Relationships Of The Cross-Scale Wave Coupling Through Information Theoretical Approach, Elmer Rivera, J. Johnson, Simon Wing, Eun-Hwa Kim, Khan-Hyuk Kim, Katariina Nykyri Jan 2026

Investigation Of Causal Relationships Of The Cross-Scale Wave Coupling Through Information Theoretical Approach, Elmer Rivera, J. Johnson, Simon Wing, Eun-Hwa Kim, Khan-Hyuk Kim, Katariina Nykyri

Faculty Publications

No abstract provided.


The Study Of The Quasi-Periodicity Observed On Plasma Density And Magnetic Field On Saturn's Magnetosphere: An Information Theory Approach, B. R. Neupane, J. R. Johnson, P. A. Delamere, Simon Wing, A. Sciola, K. Sorathia, Joe Caggiano, B. Mino, Colby Maxim Jan 2026

The Study Of The Quasi-Periodicity Observed On Plasma Density And Magnetic Field On Saturn's Magnetosphere: An Information Theory Approach, B. R. Neupane, J. R. Johnson, P. A. Delamere, Simon Wing, A. Sciola, K. Sorathia, Joe Caggiano, B. Mino, Colby Maxim

Faculty Publications

No abstract provided.