Digital Commons Network^™

An Algorithmic Framework For Polyhedral Gravity Modeling And Trajectory Propagation Near Small Bodies, Micah S. Boudreau

Graduate Studies Theses and Dissertations 2026

Near-Earth asteroids (NEAs) and other irregular celestial bodies have become increasingly significant targets for scientific investigation and space mission development due to their relevance to resource utilization, origins-of-life studies, planetary defense, and understanding of early solar system formation. As launch costs continue to decline, missions such as NASA’s NEAR Shoemaker, OSIRIS-REx and JAXA’s Hayabusa series demonstrate the expanding feasibility of detailed small body exploration. Despite this growing interest, most standard astrodynamics tools are not designed to model the complex, highly irregular gravitational fields that are a signature of small bodies. Such limitations pose challenges for trajectory design, navigation, and control …

Examining Team Leader Visual Dynamics And Team Performance In Pediatric Emergency Simulations, Annamarie Brosnihan

Graduate Studies Theses and Dissertations 2026

Pediatric medical emergencies are dynamic, high-intensity clinical situations that demand coordinated interdisciplinary actions for optimal patient outcomes. Effective teamwork and leadership are critical, especially during the preparatory phase. Here, team leaders define task goals, assign individual roles, and maintain situational awareness. This phase directs attention, organizes team dynamics, and ensures medical interventions are deployed properly. Medical simulations provide a unique opportunity to capture dynamic leadership behaviors in a controlled low-stakes environment using multimodal data, such as eye tracking, to gain insight into team leader cognitive processes (i.e., attention allocation and information processing). Prior research suggests that leaders who visually attend …

Developing The Whole Child: A Retrospective Ethnographic Case Study Of Prosocial Learning Efforts At One Elementary School, Bevan Brown

Graduate Studies Theses and Dissertations 2026

An alarming trend among elementary-aged students in the United States exhibiting significant deficits in social-emotional competency development has intensified since the Covid-19 pandemic. Challenges in developing competent prosocial skills in the elementary-aged years have been associated with difficulties in emotional regulation and social interactions, which can result in compromising school readiness and long-term academic success. Existing school infrastructure provides a vehicle for early intervention, specifically in supporting students with poor social and emotional wellbeing. Thus, the need for innovative pedagogical and instructional approaches that address the complex challenges of the 21st century has become increasingly essential. Coordinated approaches to prosocial …

Making Art For The Love Of The Game, Alissa Beth Burch

Graduate Studies Theses and Dissertations 2026

“Making Art for the Love of the Game” interweaves visual aesthetics from video games and associated online fan community practices with self-portraiture to reflect and process personal past medical trauma, a developmental period in online interactive environments, and showcases self-expressive fan content which joins an underrepresented and emerging sub-culture to contemporary art. Working through an interdisciplinary studio practice, combining printmaking, found-sticker collage, and painting refracts digital aesthetics found in online communities. I intentionally juxtaposed these physical modes of making with digital subjects to examine these subjects’ merit as artistic mediums.  It reflects a contemporary mode of art making, and acts …

Applying Harm Reduction To Binge-Eating Disorder: Protective Behavioral Strategies Against Uncontrolled Eating, Emily Burr

Graduate Studies Theses and Dissertations 2026

Binge-eating disorder (BED) is a highly deleterious mental illness, with ramifications ranging from psychological impairment to premature mortality. Despite the awareness of intervention urgency, treatment strategies to manage BED have limited long-term efficacy. Therefore, it is of high necessity to illuminate other methods of reducing the potential effects of binge eating (BE), either by combatting severity or frequency of the behavior. Protective behavioral strategies (PBS), first identified in the substance use field, are methods by which an individual attenuates potential harm from a behavior without expectation of abstaining (i.e., a harm reduction approach). Given high likelihood of treatment relapse for …

Detonability Limits Of Liquid Fuel Cloud, Khaoula Chougag

Graduate Studies Theses and Dissertations 2026

Detonation-based propulsion systems are of significant interest owing to their high thermodynamic efficiency, rapid energy release, and favorable entropy production relative to deflagration-based systems. Liquid fuels offer practical advantages in storage and volumetric energy density, making them attractive candidates for next-generation detonation engines. This dissertation investigates the detonability characteristics of liquid hydrocarbon fuel clouds through three interconnected studies conducted in a turbulent shock-tube environment using high-speed imaging and pressure diagnostics. The first study maps the detonability limits of monodisperse n-dodecane clouds by systematically varying droplet diameter (5-50 μm) and O₂/N₂ oxidizer composition at equivalence ratios spanning ϕ = 0.8-2.0. Results …

Enhanced Atomization And Combustion In Subsonic Ljic Systems Using Ultrasonically Driven Solid Obstructions, Daniel Sebastian Cruz

Graduate Studies Theses and Dissertations 2026

The liquid fueling methods used in aircraft propulsion have undergone extensive optimization, with Liquid Jets in Crossflow (LJIC) emerging as a simple yet effective injection scheme. LJIC enables sufficient fuel mass flow rates and penetration for high-speed operation, however fuel trajectory and droplet size remain highly sensitive to crossflow conditions. As a result, wide flight envelopes introduce variability in atomization, leading to unsteady combustion performance. Recent work has incorporated a pintile, a solid obstruction placed in the path of the fuel jet, to redistribute momentum and reduce trajectory variability across varying flow conditions. While this approach improves trajectory uniformity, it …

Motivational Interviewing Impact On Provider Burnout, Julie Cook

Graduate Studies Theses and Dissertations 2026

The study of patient–provider communication rarely considers the impact of provider–patient dialogue on providers themselves. This dissertation explores why motivational interviewing (MI) has been shown to reduce burnout among health care providers who use it. Using the empathic communication model (ECM) as a lens, it examines possible explanations for how MI contributes to lower burnout in providers. A mixed‑methods approach was used, consisting of a survey‑based quantitative study and a qualitative study using semi‑structured interviews. The quantitative study surveyed physicians, nurse practitioners, and physician assistants. Participants were asked questions assessing their knowledge of MI, the types of empathy they experience …

Detection And Discrimination Of Targets In Infrared Imagery, Adam T. Cuellar

Graduate Studies Theses and Dissertations 2026

Automated infrared (IR) imagery analysis is essential for persistent surveillance, defense, and security, yet it remains difficult when sensors move and when unknown objects appear. This dissertation addresses two fundamental problems: (1) detecting small moving targets amid platform-motion induced parallax and (2) distinguishing between known stationary targets and out-of-distribution (OOD) objects.   For detecting moving targets while the platform itself is in motion, auxiliary Global Positioning System and Inertial Navigation System data are combined with image analysis. Direction Cosine Matrices from calibrated inertial measurements enable sub-pixel frame alignment unattainable with purely image-based registration. The stabilized sequence is processed by a Reed–Xiaoli …

A Framework For Optimizing Creep Model Parameters From Conventional And Accelerated Creep Tests, William D. Day

Graduate Studies Theses and Dissertations 2026

The demand for efficiency in power generation and propulsion requires higher firing temperatures and reduced cooling air consumption which raises metal temperatures. This makes simplistic creep evaluations, such as Larson-Miller and Orr-Sherby-Dorn parameters, inadequate. Finite element analysis (FEA) must simulate primary and secondary creep, predict failure, and provide design guidance. Gas turbine components, expected to last over 100,000 hours, often require extrapolation of limited test data for new materials. It is essential that robust creep simulations be developed efficiently, accurately, and effectively use limited test data.

This dissertation describes an optimized framework for efficient creep testing and rapid construction of …

A Reconstruction Method For The Anisotropic Electrical Conductivity In A Hybrid Planar Inverse Problem, Athanasios Dimitriadis

Graduate Studies Theses and Dissertations 2026

Some single-physics medical imaging methods fail to reliably discriminate benign from malignant biological tissue. In partial response, a new class of inverse problems employ multi-physics phenomena, coupling methods of high resolution with methods of high contrast. In this thesis we are concerned with one such problem in which an anisotropic electrical conductivity is to be recovered from some internal knowledge of the current density field generated by maintaining a fixed boundary voltage. This internal data is obtained by the method of Current Density Impedance Imaging (CDII), which combines Maxwell's equations with Magnetic Resonance Imaging (MRI) measurements. The anisotropy class is …

Cylinder Wake Stability Effects Of Passive Forebody Modification And Active Harmonic Actuation, Matt Duran

Graduate Studies Theses and Dissertations 2026

This dissertation investigates the manipulation of global and three-dimensional instabilities in the wake of a circular cylinder through two separate flow control methods. This study first focuses on the influence of attached leading edge forebodies as a form of passive flow control designed to introduce upstream streamline curvature, where the curvature takes the form of a concave and convex case. We demonstrate that for both cases this induced curvature significantly modifies the primary instability, which suppresses periodic vortex shedding (Von Kármán vortex street). We found an increase in critical Reynolds number of 56.6 and 60.1 for the concave and convex …

Processing, Characterization And Performance Of Ceramic Liners For Hydrogen Gas Turbine Engines, Fahim Faysal

Graduate Studies Theses and Dissertations 2026

Advanced ceramics and ceramic matrix composites (CMCs) are known for their endurance at high temperatures. This study investigated the fabrication and testing of two material systems: silicon carbide nitride (SiCN) reinforced with yttria-stabilized zirconia (YSZ) fiber manufactured through polymer infiltration and pyrolysis (PIP), and 3D-printed alumina (Al₂O₃) ceramics. The CMC thermal stability at high temperatures was explored through a hydrogen torch test. The CMC surface could withstand a temperature of 1,400°C for 10 minutes during the torch test. Furthermore, the internal surface of a hydrogen combustion chamber was coated with CMC to assess its applicability as a protective barrier against …

Reflection In Still Waters: Generative Ai's Production Of Language, Jonathan D. Hawks

Graduate Studies Theses and Dissertations 2026

Language is a conceptual process of meaning-making as well as a social construction as defined by Saussure, Bakhtin, and Lacan. Large Language Models (LLMs) engage with neither process and instead present language as a finished and consumable product which undermines its fundamental aspects. The difference between representing language through probability and its structural components instead of its more inherent qualities is not a pointless distinction. This paper utilizes Narcissus as a central metaphor to show how people misread the outputs of LLMs as language which imparts to those reflected words meaning on par with our own conceptualizations of reality. People …

Governing Harm: Three Essays On Anti-Lgbtq+ Legislation In The United States, Kathryn Hickey

Graduate Studies Theses and Dissertations 2026

In the United States, over 140 state bills were passed between 2014 and 2024 that directly targeted the lives of LGBTQ+ individuals. Drawing on administrative evil and the minority stress model, this dissertation demonstrates how policy environments that normalize discrimination through the passage of anti-LGBTQ+ legislation can lead to devastating consequences. Using a three-essay format, the first study conducts a qualitative content analysis of state level anti-LGBTQ+ laws passed between 2015 and 2024 to identify how administrative evil is woven into the language of the legislation. The results of this analysis show these laws systematically dehumanize LGBTQ+ individuals, restrict their …

Framing Home: Extending Beyond The Threshold, Kaitlin R. Kirsch

Graduate Studies Theses and Dissertations 2026

This thesis body of work inspects the changes in the artist’s relationship to domesticity and their perceived sense of control over the spaces they have called home. By creating and embellishing spaces that subvert the threshold between the physical and psychic, the works stimulate feelings of comfort or discomfort. Installations of found materials, mixed media, and text-based dark humor, come together to account for this artist’s attempt to navigate the tediousness of daily life. The work takes into consideration the intangible rules that infiltrate a household, defining the framework in which a person learns to live within, or adapt to, …

Investigation Of Bulk And Periodically Stacked X(2) And X(3) Materials Using Mid-Infrared Femtosecond Pulses, Woraprach Kusolthossakul

Graduate Studies Theses and Dissertations 2026

Mid-infrared (MIR) spectral region represents a vital part of the electromagnetic spectrum, offering applications in spectroscopy, biomedicine, and remote sensing. However, there are no direct broadband MIR laser sources. Nonlinear frequency conversion techniques using second-order nonlinear materials, such as optical parametric oscillator (OPO) and intra-pulse difference frequency generator (IDFG), are promising methods for generating a broadband MIR spectrum. To achieve an efficient conversion, the phase matching condition between the interacting waves of the nonlinear process must be satisfied. Quasi-phase matching (QPM) is a special technique that enables efficient nonlinear processes in materials that cannot be conventionally phase matched using birefringence. …

Numerical Simulation Of Micro-Cutting Processes For The Estimation Of Material Fracture Toughness, Juan J. Lainez

Graduate Studies Theses and Dissertations 2026

Accurate determination of plane-strain fracture toughness is essential for structural integrity assessments of engineering components, yet conventional ASTM standardized testing methods require large, notched specimens that are impractical in many industrial and research contexts. This thesis presents a finite element method-based approach for estimating the mode I plane-strain fracture toughness of engineering materials from orthogonal micro-cutting simulations if the continuum damage mechanics-based fracture locus is calibrated. This method will eliminate the need for pre-cracked specimens while maintaining physically grounded fracture mechanics principles. The methodology applies to the Atkins energy-based cutting force model, in which the depth-independent intercept of the specific …

High-Efficiency And Compact Virtual Reality Displays, Zhenyi Luo

Graduate Studies Theses and Dissertations 2026

Virtual reality (VR) and augmented reality (AR) technologies are revolutionizing the way humans interact with digital information. However, current near-eye display systems still face critical challenges regarding optical efficiency, image quality, and device weight. This dissertation focuses on addressing these limitations through innovative liquid-crystal (LC) optics and system-level design strategies to achieve high-efficiency and compact VR displays.

First, to solve the longstanding problem of severe chromatic aberrations in ultrathin LC optics, I proposed an achromatic diffractive LC device. By stacking three LC layers with specifically designed spectral responses and polarization selectivity, I successfully reduced the chromatic aberrations. This idea enables …

Behavioral Economic Factors Implicated In Young Adult Drinking In The Natural Environment: An Ema Study, Tatiana Magri

Graduate Studies Theses and Dissertations 2026

Background: Young adult (YA) alcohol use remains a prominent public health concern. Despite research efforts aimed at mitigating harms related to drinking, rates of alcohol use and adverse outcomes related to use, remain high among YAs. Previous research has identified alcohol demand, craving, and delay discounting as risk factors for problematic drinking among YAs. However, few studies have concurrently examined these constructs using methodologies that maximize ecological and contextual validity. Method: YA individuals (N=104) completed an ecological momentary assessment (EMA) protocol assessing three demand indices (i.e., intensity, Omax, and breakpoint), delay discounting, craving, and alcohol use and problems. Participants received …

Computational Regolith Mechanics And Instrumentation Development For Lunar Exploration And Resource Utilization, Jared M. Long-Fox

Graduate Studies Theses and Dissertations 2026

Sustained exploration of the Moon requires quantitative understanding of lunar regolith properties to support scientific investigation, in situ resource utilization, excavation, and infrastructure development. This dissertation examines the mechanical interaction between robotic excavation systems and lunar regolith, emphasizing how regolith behavior both enables and constrains exploration-focused and exploration-enabled science. Computational excavation models were compared to laboratory data to evaluate prediction of excavation forces and to develop metrics of excavation efficiency. Laboratory experiments using high-fidelity lunar regolith simulants were conducted to characterize pressure-sinkage behavior, shear strength, and angle of repose across a range of material states. Common analytical excavation and terramechanics …

Angular And Geometric Dependence Of Single-Event Effects In Gallium Nitride Hemts, Patrick Maloney

Graduate Studies Theses and Dissertations 2026

Gallium nitride (GaN) high electron mobility transistors (HEMTs) have become popular in commercial and space applications due to their desirable material properties compared to silicon. However, their susceptibility to radiation-induced single-event effects (SEE) remains a critical reliability concern. This work investigates on permanent SEE in GaN-based power devices, including single-event leakage current (SELC) and single-event burnout (SEB). The dependence of SEE susceptibility on electric field, ion angle of incidence, current rating, and metallization layers is investigated and conclusions are presented. Heavy-ion irradiation experiments demonstrate that the worst-case condition occurs at near-normal incidence (0°–15°), where charge deposition most effectively overlaps high-field …

Structural Design And Development Of Deployable Propeller Blade, Annan Mashin

Graduate Studies Theses and Dissertations 2026

Aerospace systems frequently face competing requirements between compact packaging and high aerodynamic performance. Large propellers improve efficiency and thrust generation, yet launch constraints and confined storage volumes limit their maximum span. Conventional deployable solutions rely on hinges, locking mechanisms, and external actuation, increasing mechanical complexity and reducing reliability. This dissertation investigates an alternative approach in which elastic instabilities in thin composite shells are deliberately harnessed to enable rapid, mechanism- free deployment of aerodynamic structures. This work harnesses propagating instability in open- section thin-walled airfoil geometries to enable reversible transformation between compact stowed and stiff deployed configurations. By tailoring structural architecture, …

Cell Type-Specific Fatty Acid Signalling And Its Sex Dependence, Emeline Masterson

Graduate Studies Theses and Dissertations 2026

Dietary fat is a highly palatable, energy-dense nutrient whose oral detection powerfully shapes ingestion patterns and metabolic outcomes. Despite clear behavioral and physiological evidence that fat can evoke distinct taste signals, the cellular and molecular mechanisms underlying its transduction remain poorly understood. A critical gap exists in our understanding of the cell-type-specific molecular pathways and how these signals are modulated by hormonal status. This dissertation delineates estrogen-dependent plasticity in FA transduction within the peripheral taste system, revealing coordinated, sex and cell-type-specific modulation of these pathways. To understand the missing mechanisms, FA-evoked responses were compared in Type II cells from wild-type …

The Revelations, Lily Mckenna

Graduate Studies Theses and Dissertations 2026

The Revelations is a self-actualization in the form of a poetry collection. The speaker’s realization that reality is relative arrives through a Title IX case against an abusive boyfriend and former bandmate. Poems such as “Complainant / Respondent” use rigid legal structures to investigate the fluidity of truth and perception and how they can be manipulated. With her band on hiatus and the case propelling her into a new world, the speaker starts running DIY shows alongside a cast of characters with a shared love of music. She interrogates their realities in the character studies “On The Relative Reality Of…,” …

Deceptive Design And Disability: How Dark Patterns Affect Users With Visual Impairments, Konstantin Metz

Graduate Studies Theses and Dissertations 2026

Dark patterns are deceptive interface designs that steer users toward unintended actions, often at financial or privacy cost. This thesis examines how those that are vision impaired are at greater risk of these dark patterns given their visual acuity deficit. We conducted semi structured interviews with nine participants across common contexts including e-commerce checkout, subscription and cancellation flows, software download pages, and mobile permission prompts. The data show recurring exposure to dark patterns such as hidden or de-emphasized fees, pre-selected add-ons, deceptive advertising and fake download buttons along with unequal consent paths, repeated permission nagging, and cancellation friction. Participants reported …

Comparison Study Of Classical And Quantum Methods For Least Squares Support Vector Data Description, Michelle Miller

Graduate Studies Theses and Dissertations 2026

Kernel-based one-class classification (OCC) methods leverage kernel functions and are widely used for anomaly detection due to their ability to map data into high-dimensional feature spaces. One such model is Least Squares Support Vector Data Description (LS-SVDD), which aims to construct a minimum volume hypersphere that encompasses the target class observations. A pivotal component in the construction of the hypersphere is the choice of kernel. In this study, the Radial Basis Function (RBF) kernel is compared to a quantum kernel constructed through quantum feature maps. The two kernel methods are compared across four distributional shift scenarios—mean shift, rotating covariance, correlation …

The Role Of Adolescent Attachment In The Relationship Between Trauma And Identity, Ellie Mitova

Graduate Studies Theses and Dissertations 2026

Traumatic experiences have been shown to influence identity development during emerging adulthood, a complex developmental period. However, research examining how trauma interacts with adolescent attachment qualities to shape identity processes remains limited. Previous studies have primarily focused on infant attachment styles and their long-term developmental outcomes, leaving a gap in understanding how attachment qualities developed through relationships with parents and peers during adolescence may influence identity development in emerging adults. Additionally, while traumatic experiences have been associated with maladaptive identity processes such as rumination and identity distress, some research suggests that trauma may also contribute to deeper identity exploration and …

Cfd Investigation Of Heat Transfer Enhancement In Pipes Using Gyroid Tpms Structures For Industrial Steam Generation, Alejandro Moreno Escribano

Graduate Studies Theses and Dissertations 2026

Industrial heating processes account for nearly 28\% of global CO2 emissions, and fossil fueled boilers predominate in high temperature applications. Industrial electrification can be an effective solution when combined with renewable energy sources. Increasing steam generation efficiency and at the same time maintaining system compactness is a significant challenge in industrial thermal processes. Traditional smooth pipes offer limited heat transfer surface area, which constrains boiling heat transfer performance and reduces the overall efficiency of steam generation systems. Advanced internal geometries have the potential to significantly enhance heat transfer by increasing surface area and promoting fluid mixing. This work presents a …

The Intersection Of Abuse, Child Welfare, And The Law For Intimate Partner Violence Survivors: Gender Violence As An Antagonistic Social Force, Julio Montanez

Graduate Studies Theses and Dissertations 2026

Intimate partner violence (IPV)—as gender violence—pits children’s civil rights and women’s civil liberties against each other. To explore this phenomenon, the current work features five (5) studies that aim to understand the systemic consequences of IPV and child maltreatment for victims and survivors of both types of abuse.

• Study 1 is a qualitative-deductive study featuring a directed content analysis of news media pertaining to a trial court case on lethal child maltreatment and IPV.
• Study 2 is a qualitative-inductive study featuring a feminist critical discourse analysis of trial court data on lethal child maltreatment and IPV.
• Study 3 is a …