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Bridging Scales Integrating Satellite Derived With Airborne And Uas-Collected Bathymetry For Coastal And Inland Water Management, Md Salman Bashit Dec 2024

Bridging Scales Integrating Satellite Derived With Airborne And Uas-Collected Bathymetry For Coastal And Inland Water Management, Md Salman Bashit

Theses and Dissertations

This study makes important scientific contributions by improving remote sensing methods for collecting bathymetric data. It demonstrates an improved and novel approach to utilizing Sentinel-2 reflectance data to extract satellite-derived bathymetry (SDB), validated against data from airborne LiDAR bathymetry (ALB). The study looks at how well SDB works in several coastal areas of the United States. It uses the Normalized Difference Turbidity Index (NDTI) and Total Suspended Solids (TSS) to see how water quality affects the accuracy of SDB. The study also analyzes how unoccupied aerial systems (UAS) can be combined with echo sounder systems to derive bathymetric maps with …

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Physics-Based And Data-Driven Constitutive Modeling Of Unsaturated Soils Under Multi-Physics Loading Conditions, Mohsen Ajdari Dec 2024

Physics-Based And Data-Driven Constitutive Modeling Of Unsaturated Soils Under Multi-Physics Loading Conditions, Mohsen Ajdari

Theses and Dissertations

Understanding the behavior of unsaturated soils under multi-physics loading is crucial for addressing several challenges related to emerging geo-energy technologies, climate change, and geohazard mitigation. The main objective of this research is to enhance the state of the art for modeling unsaturated soils under multi-physics loading conditions through physics-based and data-driven approaches. Toward this objective, this dissertation is divided into two distinct yet interrelated parts. In the first part (Chapters 2, 3, and 4), thermodynamic principles are employed to develop new constitutive functions to describe soil suction and stress-dilatancy of unsaturated soils under temperature-dependent conditions. Building upon the insights gained …

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Numerical Predictions Of Turbulent Heat Transfer In Liquid Metal Flows, Mohammed Elmellouki Dec 2024

Numerical Predictions Of Turbulent Heat Transfer In Liquid Metal Flows, Mohammed Elmellouki

Theses and Dissertations

Fast breeder nuclear reactors use liquid metals such as Sodium (Na), Sodium-Potassium (Na-K), and Lead (Pb) as coolants since these liquids have high thermal conductivity, high thermal diffusivity, and lower heat capacity compared to water and air, thus involving low Prandtl numbers (Pr). However, liquid metals solidify at room temperature which poses challenges for experimental studies, making computational fluid dynamics (CFD) is considered a valuable analysis and design tool. Furthermore, the accurate modeling of turbulent heat transfer in low Pr flows remains one of the main challenges due to the gap between momentum and turbulent thermal diffusion. The study aims …

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Reclaiming The Journey: A Phenomenological Study Of Black Lactation Professionals, Deandra Monet Kees Dec 2024

Reclaiming The Journey: A Phenomenological Study Of Black Lactation Professionals, Deandra Monet Kees

Theses and Dissertations

This study examined Black lactation professionals’ lived experiences navigating the human lactation workforce. Grounded in hermeneutic phenomenology and guided by Black feminist thought and critical race theory, this research unveiled the impact of various barriers that play a role in human lactation. While evidence cites the importance of human milk feeding, the voices of Black lactation professionals are often overlooked and marginalized, resulting in limited representation of Black lactation training practices. This study aimed to address a critical gap in the literature by centering the voices of Black lactation professionals. This research was conducted utilizing semi-structured interviews and a focus …

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Multi-Cloud Identity Security Utilizing Self-Sovereign Identity, Morgan Lee Reece Dec 2024

Multi-Cloud Identity Security Utilizing Self-Sovereign Identity, Morgan Lee Reece

Theses and Dissertations

With the increasing use of multi-cloud environments, security professionals face challenges in configuration, management, and integration due to uneven security capabilities and features among providers. As a result, a fragmented approach toward security has been observed, leading to new attack vectors and potential vulnerabilities. Other research has focused on single-cloud platforms or specific applications of multi-cloud environments. Therefore, there is a need for a holistic security and vulnerability assessment and defense strategy that applies to multi-cloud platforms. This dissertation explores risk and vulnerability analysis to identify attack vectors from software, hardware, and the network, as well as interoperability security issues …

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Impact Of Cascading Optical Processes On Spectroscopic Quantification Of Absorption And Scattering Properties Of Samples, Pathum Dilshan De Silva Wathudura Dec 2024

Impact Of Cascading Optical Processes On Spectroscopic Quantification Of Absorption And Scattering Properties Of Samples, Pathum Dilshan De Silva Wathudura

Theses and Dissertations

Light absorption and scattering are fundamental properties of matter, particularly significant in nanoscale materials. This study explores how cascading optical processes affect the experimental measurement of absorption and scattering intensities, along with scattering depolarization, in samples containing absorbers and scatterers. The experimental UV–vis spectrum results from the combination of absorption and scattering extinction spectra. However, the maximum measurable extinction may be limited by forward scattered light. Light absorption decreases the intensity of scattered light and influences scattering depolarization. While scattering can reduce absorption along the optical path to the detector, sufficient absorption of the scattered light may counterbalance this effect, …

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Analysis Of Cortical Evoked Auditory Response Detection In Adults Using Machine Learning, Pranavi Beerelli Dec 2024

Analysis Of Cortical Evoked Auditory Response Detection In Adults Using Machine Learning, Pranavi Beerelli

Theses and Dissertations

This study focuses on the use of machine learning (ML) techniques to automate the detection of Cortical Evoked Auditory Responses (CEARs), which are key in understanding how the auditory cortex processes sound stimuli. Traditionally, analyzing these auditory responses has relied on manual interpretation by audiologists, a process that can introduce variability and human error, particularly in complex cases. To address this challenge, the research utilizes advanced deep learning models, including Convolutional Neural Networks (CNNs), Long Short Term Memory (LSTM) networks, and Bidirectional LSTM (BiLSTM) architectures, to analyze Electroencephalography (EEG) data and classify the presence or absence of auditory responses automatically. …

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Evaluation Of The Physical And Mechanical Properties Of Hardwoods And Softwood Cross Laminated Timber, Richard Olakunle Omotayo Dec 2024

Evaluation Of The Physical And Mechanical Properties Of Hardwoods And Softwood Cross Laminated Timber, Richard Olakunle Omotayo

Theses and Dissertations

This thesis is focused on the evaluation of cross laminated timber made from southern pine lumber and low-grade hardwood species (which included red oak, sweetgum, and yellow poplar) growing in the southeastern part of the United States. The properties of interest were density, modulus of elasticity (MOE), modulus of rupture (MOR) and dynamic modulus of elasticity (dMOE). Mechanical testing using static bending technique was used to determine MOE and MOR and non-destructive technique (NDT) was used to predict dMOE. The results from mechanical testing showed that over 98% of low-grade hardwood CLT samples exceeded 8300 MPa. This proved the suitability …

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Investigations Of Guayule Resin As A Wood Protectant, Queen Aguma Dec 2024

Investigations Of Guayule Resin As A Wood Protectant, Queen Aguma

Theses and Dissertations

Wood products are subject to deterioration by numerous processes, as a biological material. Today, a significant area of preservative development is the utilization of existing plant residues that have water-repelling, antibacterial, antifungal, and insecticidal properties as components of wood protectants. Parthenium argentatum, known as guayule (wy-oo-lee), is a promising wood protectant due to its resin. However, the resin's complicated chemical, physical, and solvent-resistant properties make it difficult to use. The primary goal of this study was to eliminate the use of any solvent and rely on thermal modification only to fractionate usable compounds from guayule resin. Utilizing heated dialysis and …

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Deep Learning - Based Automated Detection And Classification Of Foreign Materials In Poultry Using Color And Hyperspectral Imaging, Rohini Maram Dec 2024

Deep Learning - Based Automated Detection And Classification Of Foreign Materials In Poultry Using Color And Hyperspectral Imaging, Rohini Maram

Theses and Dissertations

This thesis explores the use of Deep learning for detection and classification of small foreign materials (FMs) in poultry meat using color and hyperspectral imagery (HSI). The study employs You only look once (YOLO) object detection models on color images for precise localization, and one-dimensional convolutional neural network (1D CNN), two-dimensional convolutional neural network (2D CNN) was used on HSI (600 – 1700 nm) for classification. Twelve different FMs commonly known as polymers including PVC, PET, LDPE and HDPE, were examined using 52 color and 52 hyperspectral images. Four YOLO models (v5x, v7x, v8x, v10x) were implemented, trained, tested and …

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Innovative Methyl Bromide Alternatives: Efficacy Of Acetic Acid Coated Ham Nets And Carboxymethyl Cellulose Films In Inhibiting Mite Infestations On Dry-Cured Ham, Sawyer Wyatt Smith Dec 2024

Innovative Methyl Bromide Alternatives: Efficacy Of Acetic Acid Coated Ham Nets And Carboxymethyl Cellulose Films In Inhibiting Mite Infestations On Dry-Cured Ham, Sawyer Wyatt Smith

Theses and Dissertations

Dry-cured hams may become infested with Tyrophagus putrescentiae (ham mites) during the aging process. Traditionally, methyl bromide (MB) fumigation has been used to control these infestations, but its phase-out due to environmental concerns has prompted the need for alternative methods. This study evaluated the effectiveness of acetic acid-coated ham nets and carboxymethyl cellulose (CMC)-based edible films with propylene glycol (PG) in mitigating mite infestations. Laboratory trials assessed the impact of these treatments on mite orientation, reproduction, infestation rates, and sensory quality. Results indicate that CMC films were effective at controlling mite growth and reproduction with minimal sensory impact. In contrast, …

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On Topological Measures And Network Vulnerability Patterns: A Review And Comparative Analysis, Saviz Saei Dec 2024

On Topological Measures And Network Vulnerability Patterns: A Review And Comparative Analysis, Saviz Saei

Theses and Dissertations

Despite much hope for climate change to slow down or even reverse, younger generations face a future overshadowed by extreme events. The indisputable reality is that unless the United Nations establishes comprehensive and sustained climate justice policies, children today will experience five times more extreme events than those that took place a century ago. On Monday, July 3rd of 2023, an unprecedented peak in global temperatures was documented, marking the highest global temperature ever recorded, as the U.S. National Centers for Environmental Prediction reported. These increasing temperatures indicate the ongoing and intensifying phenomenon of climate change, which amplifies the frequency …

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Evaluation And Characterization Of Two Capacitive Sensors For Cotton Moisture Measurement In Static And Dynamic Modes For Real-Time Use In Cotton Gin, Sushma Perati Dec 2024

Evaluation And Characterization Of Two Capacitive Sensors For Cotton Moisture Measurement In Static And Dynamic Modes For Real-Time Use In Cotton Gin, Sushma Perati

Theses and Dissertations

Two capacitive sensors, a commercial FP-32C and a custom design capacitor plate were evaluated for real-time cotton moisture content (MC%) measurement in ginning environment. The sensors were able to measure MC ranges of 3.56%–19.7% and 4.56%–21.04% MC for FP-32C and custom capacitor pate, respectively. In dynamic mode, the ranges were 4.9%–14.5% and 4.9%–14.7% respectively. Results showed that measurements of both sensors had strong correlations with results obtained from oven method. A comparison of moisture content measurement methods using a moisture balance (M5 Thermo 163M,) and oven method was conducted with the result showing that Lint-Only samples were the most closely …

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Habitat Suitability Modeling For Optimizing Stand Initiation And Restoration Efforts Of Economically And Ecologically Important Hardwoods, Segun Michael Adeyemo Dec 2024

Habitat Suitability Modeling For Optimizing Stand Initiation And Restoration Efforts Of Economically And Ecologically Important Hardwoods, Segun Michael Adeyemo

Theses and Dissertations

This dissertation addresses critical challenges in forest management and restoration in the Lower Mississippi Alluvial Valley (LMAV) through a series of interconnected studies focused on improving habitat suitability modeling and growth prediction for oak species. The research employs advanced modeling techniques to enhance our understanding of species-habitat relationships and forest dynamics in the context of climate change. Initial studies focused on developing ensemble habitat suitability models for American chestnut (Castanea dentata) and butternut (Juglans cinerea), two historically important but currently threatened tree species. These models predict suitable habitats and potential range shifts under various climate change scenarios, highlighting the species' …

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Improved Vector Pruning For Partially Observable Markov Decision Processes, Thomas Jonathan Bowman Dec 2024

Improved Vector Pruning For Partially Observable Markov Decision Processes, Thomas Jonathan Bowman

Theses and Dissertations

Exact dynamic programming algorithms for planning problems that are represented as partially observable Markov decision processes rely on a subroutine that removes, or ``prunes", dominated vectors from sets of vectors that represent piecewise-linear and convex value functions. The classic vector pruning subroutine solves one linear program per vector, where the number of variables is equal to the size of the state space and the number of constraints is equal to the number of vectors shown so far to be undominated. Thus, its scalability is limited not only by the number of linear programs it solves, but especially by their size. …

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Investigation Of Coupled Fluid-Structure Interactions In Supersonic Flows, Seshendra Palakurthy Dec 2024

Investigation Of Coupled Fluid-Structure Interactions In Supersonic Flows, Seshendra Palakurthy

Theses and Dissertations

The skin panels used in high-speed flights are exposed to various types of loads, such as inertial, elastic, and aerodynamic loads. In addition, oblique shock impingement can cause flow separation and unsteady aerodynamic loading, which can reduce vehicle performance and result in acoustic noise and viscous heating. These loads, when combined, can result in a complex dynamic response, such as flutter. Flutter is characterized by sustained unsteadiness or structural vibrations. Although flutter might not be immediately harmful, it can lead to fatigue failure of the structural components. A vast amount of literature already exists on the panel flutter induced by …

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Beyond The Frame: Unraveling The Influence Of Art In Social Studies Education, Emily Cox Dec 2024

Beyond The Frame: Unraveling The Influence Of Art In Social Studies Education, Emily Cox

Honors Projects

This study examines the integration of art into social studies education to enhance student engagement, academic outcomes, and meaningful discourse. By incorporating visual literacy and material culture through activities such as analyzing gravestones, it explores how art can connect students to historical and social concepts in impactful ways. Through student-driven analysis and interdisciplinary approaches, the research demonstrates how art integration supports academic objectives, fosters critical thinking, and encourages substantive discussions. The findings highlight art’s potential to enrich understanding, deepen personal connections, and make social studies more engaging and relevant for students.

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Subcutaneous Electroencephalography Monitoring For People With Epilepsy And Intellectual Disability: Co-Production Workshops, Rohit Shankar Dec 2024

Subcutaneous Electroencephalography Monitoring For People With Epilepsy And Intellectual Disability: Co-Production Workshops, Rohit Shankar

Peninsula Medical School

Background Nearly 25% of people with intellectual disability (PwID) have epilepsy compared to 1% of the UK general population. PwID are commonly excluded from research, eventually affecting their care. Understanding seizures in PwID is particularly challenging because of reliance on subjective external observation and poor objective validation. Remote electroencephalography (EEG) monitoring could capture objective data, but particular challenges and implementation strategies for this population need to be understood. Aim This co-production aimed to explore the accessibility and potential impact of a remote, long-term EEG tool (UnEEG 24/7 SubQ) for PwID and epilepsy. Method We conducted six, 2-hour long workshops; three …

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Exploring Strategies To Reduce Physician Turnover And Costs During The Covid-19 Pandemic, Ne'kecha Pellam Brabham Dec 2024

Exploring Strategies To Reduce Physician Turnover And Costs During The Covid-19 Pandemic, Ne'kecha Pellam Brabham

Walden Dissertations and Doctoral Studies

Hospitals face the risk of adverse business outcomes due to physician turnover, which can lead to increased costs and poorer patient care. C-suite executives, in collaboration with human resources managers (HRMs), are struggling to develop strategies to reduce turnover and burnout, while also enhancing key factors like job satisfaction and employee engagement. Grounded in the job demands-resources theory. The purpose of this qualitative pragmatic inquiry was to explore the strategies employed by HRMs in the healthcare industry to effectively reduce physician turnover and associated costs during the COVID-19 pandemic. The participants were 13 HRMs in the health care industry in …

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Black Mothering: Experiences Of Black Mothers In Safety Conversations With Black Sons, Theresa Libios Dec 2024

Black Mothering: Experiences Of Black Mothers In Safety Conversations With Black Sons, Theresa Libios

Walden Dissertations and Doctoral Studies

Black mothers raising Black sons in the United States face the immense challenge of preparing their Black sons for a society where police violence pose significant threats to their safety. The critical safety conversations, commonly referred to as "The Talk," highlight the need for culturally informed interventions to address the psychological toll on Black mothers. This study explored the lived experiences of Black mothers navigating these safety conversations, with the goal of fostering empathy and developing culturally competent mental health services. This qualitative hermeneutic phenomenological study, grounded in intersectionality theory, examined the interconnected influences of race, gender, and systemic oppression …

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Decision Making And Performance Optimization In Distributed Cyber Physical Networks, Md Sahabul Hossain Dec 2024

Decision Making And Performance Optimization In Distributed Cyber Physical Networks, Md Sahabul Hossain

Electrical and Computer Engineering ETDs

Cyber-Physical Systems (CPSs) integrate computation, networking, and physical processes, while Cyber-Physical Networks (CPNs) enable communication and coordination among components. With advances in IoT and smart devices, CPSs are increasingly vital for applications such as smart grids, industrial automation, and autonomous vehicles. This dissertation explores decision making and performance optimization in Distributed Cyber-Physical Networks (DCPNs), focusing on efficiency, reliability, decentralization, and security. Using network economic theories (e.g., game theory, contract theory) and machine learning (e.g., Reinforcement Learning, Federated Learning), it addresses key problems: 1) a cost-effective positioning system with Reconfigurable Intelligent Surfaces (RISs) and RL, 2) energy-efficient task offloading in Multi-access …

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Study The Effects Of Temperature On Laser Cladding Process With Two Different Geometries Using Comsol Multiphysics, Luban Hamdy Hameed Al-Qudsy Dec 2024

Study The Effects Of Temperature On Laser Cladding Process With Two Different Geometries Using Comsol Multiphysics, Luban Hamdy Hameed Al-Qudsy

AUIQ Technical Engineering Science

Due to the advancement of laser material processing and the high-demand of high-quality processing, COMSOL Multiphyiscs emerges as a powerful solution to the problem, offering multiple simulation in virtual environment with both 2D and 3D geometries. In this work, we aim to study the effects of thermal properties on the laser cladding using both 2D and 3D geometries with Nickle and Copper as promising candidates for rapid processing of materials. The work was done on a personal computer using commercially-available package of COMSOL Multiphysics 5.0. Results shows a notable increment of heat affected zone when the laser power increased. Additionally, …

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Rapallo Notebook D: Diary Notes, Poetry, And Other Writings, Wayne Chapman, Neil Mann Dec 2024

Rapallo Notebook D: Diary Notes, Poetry, And Other Writings, Wayne Chapman, Neil Mann

International Yeats Studies

No abstract provided.

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Envisioning A Yeats Poetry Digital Archive, Rob Doggett Dec 2024

Envisioning A Yeats Poetry Digital Archive, Rob Doggett

International Yeats Studies

No abstract provided.

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“Man Is Nothing Till He Is United To An Image”: On Truth, Lies, And The Nietzschean Mask In Yeats’S The Player Queen, Adam Roberts Dec 2024

“Man Is Nothing Till He Is United To An Image”: On Truth, Lies, And The Nietzschean Mask In Yeats’S The Player Queen, Adam Roberts

International Yeats Studies

No abstract provided.

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“The Invulnerable Tide”: Water, Nation, And Nature In Yeats, Nels C. Pearson Dec 2024

“The Invulnerable Tide”: Water, Nation, And Nature In Yeats, Nels C. Pearson

International Yeats Studies

No abstract provided.

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Subsyndromal Delirium And Postoperative Pain In Older Adults, Dawn Lujean Denny Dec 2024

Subsyndromal Delirium And Postoperative Pain In Older Adults, Dawn Lujean Denny

Dissertations

The purpose of this study was to determine the relationship between subsyndromal delirium and pain in older adults following major elective orthopedic surgery. The design of this correlational study was based on Inouye and Charpentier's (1996) multifactorial model of delirium.

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Prostate Cancer Screening Survey Among African-American And Their Partners, Angela James Dec 2024

Prostate Cancer Screening Survey Among African-American And Their Partners, Angela James

Dissertations

The purpose of this translational research project was to survey adult African-Americans and their partners to explore inhibitors and facilitators to PC screening.

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Circadian Body Temperature And Activation Rhythms And The Well-Being Of Independent Older Women, Diana J. Mason Dec 2024

Circadian Body Temperature And Activation Rhythms And The Well-Being Of Independent Older Women, Diana J. Mason

Dissertations

This study examined changes in the circadian parameters of body temperature and activation and their relationship to the well-being of the older woman.

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Nurse Educators' Perceptions Regarding Faculty Participation In University Governance, Janet J. Gross Dec 2024

Nurse Educators' Perceptions Regarding Faculty Participation In University Governance, Janet J. Gross

Dissertations

The purpose of this descriptive study was to identify nurse educators' perceptions of faculty participation in university governance

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