Digital Commons Network^™

Automated Chick Sexing Using Computer Vision, Marta Veganzones Rodriguez

Graduate Theses and Dissertations

This thesis presents two complementary approaches to chick sexing, a critical task in poultry production that demands accurate and early gender identification. By investigating both facial and vent-based modalities, we present two complementary methods that aim to improve the efficiency, scalability, and ethical standards of gender classification in day-old chicks through the use of computer vision and deep learning. The first approach draws inspiration from human facial gender recognition to introduce facial chick sexing, a minimally invasive technique that eliminates the need for expert knowledge. This system encompasses a complete pipeline that includes image acquisition, facial detection and alignment, keypoint …

Polymer-Enhanced Nanopore Sensing, Eugene Gyasi Agyemang

Graduate Theses and Dissertations

The resistive pulse technique characterizes single analytes by detecting fluctuations in the ion current as they pass through a narrow orifice connecting two electrolyte-filled chambers, each containing a single electrode. The amplitude, shape, frequency, and duration of these fluctuations primarily provide information about the analyte’s size, shape, concentration, and net surface charge, respectively. One configuration for resistive pulse measurements is of an electrolyte-filled nanopipette immersed in a bath, where the nanopipette tip acts as the nanoscale orifice. It was previously shown that incorporating the large quantities polymer polyethylene glycol (PEG 8K, 50% w/v) into the external electrolyte bath dramatically enhanced …

Farmers’ Perceptions About Drivers Of Poverty: A Case Study Of Cocoa Farmers In Ghana, Felix Agyei Boamah

Graduate Theses and Dissertations

Cocoa farmers in Ghana face numerous challenges that undermine their incomes and living standards, including high labor costs, fluctuating cocoa prices, high cost and limited access to inputs, lack of credit, illegal mining, weather risks, small farm sizes, outdated farming and drying technologies, and inadequate extension services. These issues reduce productivity, lower incomes, and perpetuate poverty. This study examined farmers’ perceptions about the importance of these challenges and assessed possible differences across regions and farm households’ socioeconomic status. In the summer of 2024, data were collected from 400 cocoa farmers in major cocoa-producing areas of Ghana’s Eastern and Ashanti regions. …

A Pastoral River: Reimagining The Narrative Of Buffalo National River, Thomas Andrew Medford

Graduate Theses and Dissertations

This thesis examines the creation of Buffalo National River (BNR) from the perspective of dispossessed landowners. A unit of the National Park Service in the Arkansas Ozarks, BNR has garnered little scholarly attention in this light, despite present-day resentment of the federal government by locals. The park was signed into law in 1972, capping a years-long debate about the fate of the river. Some had supported a tenacious U.S. Army Corps of Engineers effort to dam the river, others backed a well-organized, preservationist-led campaign to create a park, while on-the-river landowners typically preferred the status quo of private ownership. Many …

The Upcoming Moral Crisis In Primitive Artificial Intelligence, Justin E. Edens

Graduate Theses and Dissertations

As we continue to develop artificially intelligent systems, there is an increasingly high chance that we will develop a system that is both conscious and capable of suffering. Furthermore, it is likely that the development of this conscious machine will be entirely unintentional. While this machine will have moral status, identifying it will be extremely difficult, leading to it being treated the same as its inert predecessors. For these reasons I believe that a crisis in ethics is looming. This paper aims to argue that it is possible for a machine to have moral status, that the first such machine …

Resilience Redefined: Exploring The Impact Of Childhood Trauma On The Value Systems Of High-Achieving Corporate Men, Lana B. Henry

Graduate Theses and Dissertations

This qualitative study employed Interpretive Phenomenological Analysis (IPA) to explore how childhood trauma influences the value systems of high-achieving corporate men. In contemporary corporate culture, where stoicism, performance, and independence are often rewarded, little attention is paid to how early adversity informs internal frameworks of meaning, leadership, and success. Semi-structured interviews were conducted with six high-achieving men, all executives and leaders in high-performing industries, who self-identified as having experienced childhood trauma. Data were analyzed using a six-step IPA process and interpreted through the lens of Schwartz’s Theory of Basic Human Values and social constructivism. Findings revealed that childhood trauma deeply …

Effects Of Multi-Sensory Training In Physical Activity On Reaction Time And Fitness In Elementary Students., Sarah Anne Trout

Graduate Theses and Dissertations

Abstract This study examined the effects of multi-sensory Neuroplasticity training (MSNP™) using the ROXPro system on the psychomotor abilities of third-grade students in a Midwestern elementary school. The research aimed to determine whether the integration of interactive sensory-reactive technology in physical education could improve reaction time, agility, and explosive power compared to standard PE instruction. A total of 49 participants were assigned to either a control group or an intervention group, with the latter engaging in six weeks of ROX-based drills. A pretest-posttest design was employed, and data were analyzed using ANCOVA, repeated measures ANOVA, and independent t-tests to assess …

Effect Of Marination And Storage Time On The Properties And Meat Quality Of Broiler Breast, Mayra Mabel Herrera Rivera

Graduate Theses and Dissertations

Abstract The poultry industry has implemented numerous methods, as marination and aging, to improve meat quality and satisfy consumer demands. Three experiments were developed to assess the effects of vacuum tumble marination and aging on the proteins of chicken breast. These experiments utilized 0.75 % sodium chloride, 0.45 % phosphate, and water in a marinade. In experiment one, 270 fillets were allocated into six treatment groups, each comprising 45 fillets. Six days of storage time were used, marinating and storing the fillets in each group at a temperature of 4°C. Following each day of storage period, the fillets underwent a …

Truth, Justice, And The American Way: Negotiating Identity Among Superhero Cosplayers At International Comic Book Conventions, James Scanlan

Graduate Theses and Dissertations

Cosplay performances in convention spaces, and the increasing commercialization and commodification of both, remain largely unexplored domains that are rapidly expanding into global phenomena. The influx of capital internationally and the growing popularity of cosplay and conventions offers the opportunity to document and describe processes of performance, identity construction, and negotiation of the global phenomena within local contexts (“glocalization”) in non-Western spaces. I conducted ethnographic research at more than half a dozen research sites throughout Europe, the Middle East, South Asia, East Asia, and South and Central America, photographing convention spaces and cosplayers and conducting interviews with cosplayers. By focusing …

Freezing And Shipping Optimization To Increase Quality And Profitability Of Meat E-Commerce, Paul Olaoluwaniyi Dahunsi

Graduate Theses and Dissertations

Freezing remains one of the most reliable methods for preserving meat quality and extending shelf life. However, quality deterioration can still occur due to structural and biochemical changes activated during freezing, thawing, and distribution. Since the COVID-19 pandemic, consumers’ preference for bulk purchasing and online meat shopping has increased, raising questions about the best strategies to balance both quality maintenance and profitability. This thesis aimed to evaluate two key stages where frozen beef is most vulnerable to quality degradation: consumer-level freezing and post-purchase shipping. The objectives were (1) to determine the effects of product size and subsequent consumer freezing practices …

Onward, Christian Soldiers: The Material Rhetoric Of Becoming Fascist In Parachurch Scouting Organizations, Madeline Aubrey Studebaker

Graduate Theses and Dissertations

This thesis provides a material rhetorical analysis of Trail Life USA and American Heritage Girls, two Christian nationalist scouting organizations that aim to renew and restore their cultural dominance across America. In examining how these programs route children’s bodies through ritual and affective indoctrination, I find that a fascist becoming underpins these groups’ (re)production of perfect, patriotic children. The first chapter discusses how boys enrolled in Trail Life USA become fascist as self-defense against American boyhood’s perceived eradication. Trail Life USA restores masculinity through rituals of autogenetic sovereignty, returns to originality through homosocial and affective intensity, and invocations of exceptional …

The Case Against Finean Essentialism, Miles Thibodeaux

Graduate Theses and Dissertations

In this thesis, I survey, critique, and add to recent arguments against Finean Essentialism: the view that all de re modal facts are metaphysically explained by essences. Arguments against Finean Essentialism generally fall into two categories: (a) Finean Essentialism risks contradicting commonly held views or suppositions, or (b) Finean Essentialism involves an explanatory gap, vicious circularity, or a vicious regress. While the details of the arguments within each category differ significantly, it is useful to group them in this way given the relevant implications they have for one another. I will argue that the proposed critiques from category (a) are …

The Utilization And Deterioration Of Travertine In Classical, Baroque, And Fascist Architecture: A Case Study From Rome, Italy, Kaitlyn V. Fitzgerald

Graduate Theses and Dissertations

Travertine limestone has formed the resilient backbone of Roman architecture for over two millennia and across several cultural periods. This study identified the leading causes of travertine decay in Rome across Ancient, Baroque, and Fascist periods in order to efficiently prioritize conservation and restoration efforts across the city. The methodology developed here can then be utilized in other urban settings. Rome’s iconic landmarks such as the Flavian Amphitheater, St. Peter’s Basilica, and the Spanish Steps all owe their existence to this local limestone. High rates of urbanization now dictate how architectural travertine interacts with its surrounding environments and landscapes. Grand …

Assessing The Recall Of Traffic Safety Campaigns In Arkansas, Pratik Babu Pokharel

Graduate Theses and Dissertations

This study estimates the degree to which drivers recall traffic safety campaigns based on sociodemographic characteristics including driving frequency, vehicle type, education, income, age, household composition, race, and gender. Traffic safety campaigns are efforts to educate, persuade, and inspire individuals to adjust their attitudes and behaviors for improved road safety, utilizing planned communications over a set time period. They aim to encourage safe driving using slogans shown on television, radio, social media, billboards, and variable message signs. Two years of a mail-based survey conducted in Arkansas were used to estimate binary logistic regression models for each of four safety campaigns. …

An Analytical Evaluation Of Economic Geography Within Maine And Its Resource Industries: 1600 To Present, Maureen Mantooth

Graduate Theses and Dissertations

Resource peripheries represent a fringe area within economic geography, originating from the core-periphery theory developed by Friedmann and Miller. This concept has evolved to address global and regional contexts, referring to marginalized regions that rely heavily on the extraction and export of natural resources. By studying these regions, we gain a deeper understanding of critical components in global economic systems. This dissertation focuses on Maine as a case study of a resource periphery, using the framework proposed by Hayter et al. (2003) within the broader regional contexts of New England and the United States. Key factors explored include resource exploitation, …

Using Scaffolding, Gamification, And Self Awareness To Create Responsive Ux/Ui In Cad Software To Nurture Metacognition In Novice Users, Obed Ibrahim Gonzalez

Graduate Theses and Dissertations

Computer-aided Design (CAD) software represents a significant shift from manual and analog design processes to digital workflows, offering substantial utility, accuracy, and productivity benefits. However, CAD software often presents a steep learning curve, particularly for novice users who are new to the software or possess only basic knowledge. Traditional CAD curricula have predominantly focused on technical problem-solving—teaching tools and systems—while often neglecting strategic knowledge that encompasses reflection, planning, and refining, which are essential components of metacognition. Metacognition is crucial for transforming novices into experts who use fewer and more complex commands, employ sophisticated planning, and achieve their goals more efficiently. …

A Living House Never Stands Still, Holly Rose Kranker

Graduate Theses and Dissertations

A Living House Never Stands Still is an exhibition that explores the interplay between place, memory, and the suspension of time through diverse mediums and materials. I engage with seemingly mundane objects, interpreting them through a non-linear, dream-like, and irrational framework to unearth latent connections across time–past, present, and future. Central to these explorations is the concept of home—not merely as a physical location, but as an evolving entity. Home is a sacred space for me.

My recent studio reflections are focused on the lifecycle of objects, the emotional responses they evoke, and how these cycles emulate the human body …

Adult Effects And Affects: Dialogic Reflections And Theoretical Analysis Of Systemic Led Education, Early Childhood Education, And Art Education, Katherine Galaz

Graduate Theses and Dissertations

Through self-exploration, reflexive dialogue, and literature review I look to the grey areas, contradictions, and margins of hegemonic educational practices. I highlight the ways in which the standard of education is structured in opposition to how children seek to understand and make sense of the world. In my analysis of early childhood settings and art education under the umbrella of the U.S. education system, I approach historical antecedents involving colonialism and systemic injustice. Within the field of art education, I specifically look at the artistic and imaginative ways that children resist societal norms in early childhood education. As such, I …

Livestock Risk Protection Basis Risk For Feeder Cattle, Bryce Anderson

Graduate Theses and Dissertations

Recent government subsidies make livestock risk protection (LRP) insurance an affordable price risk management tool for many U.S. cattle producers. LRP insurance triggers a loss when the Chicago Mercantile Exchange (CME) Feeder Cattle Index falls below the selected coverage price. The CME Feeder Cattle Index is a 7-day weighted average of feeder cattle prices in 12 states. This paper determines if LRP policy holders who produce feeder cattle in states whose feeder cattle prices are not included in the CME Feeder Cattle Index are exposed to excess basis risk. To do this, we use a hedonic regression model to determine …

Identifying Microbial Complexities And Control Strategies At Pre-Harvest Poultry Production, Tolulope Tiwa Ogundipe

Graduate Theses and Dissertations

While significant progress has been made in post-harvest control of Salmonella in the poultry industry, the development of effective pre-harvest intervention strategies remains critical for reducing foodborne pathogens. Environmental reservoirs such as poultry litter and drinking water systems (DWS) are potential harborage sites for Salmonella and other microbial communities. Understanding the microbiota of these environments, including biofilms within water lines, is essential to identifying factors contributing to Salmonella colonization and improving pre-harvest control approaches. This study aimed to evaluate the incidence and quantity of Salmonella in poultry litter and water lines, characterize the microbial populations in these environments, and assess …

Maria Sabina And The Wise Ones, Robin Bruce

Graduate Theses and Dissertations

Maria Sabina was born Maria Sabina Magdalena Garcia in 1894, in the principality of Huautla, located in Oaxaca, Mexico. She’s known as a healer and poet, though she would most likely refer to herself as a woman doctor, whose language becomes beautiful with the help of the psylocibin mushroom, which she affectionately refers to as little saints or holy children. In 1953, American banker, R. Gordon Wasson and his wife, pediatrician Valentina Pavlovna, were the first non-Indigenous people to witness one of Sabina’s ceremonies. Novice ethnomycologists and anthropologists, the couple traveled to Southern Mexico to witness a ceremony in which …

Variation In Stress Response Regulation Across Natural Isolates Of Saccharomyces Cerevisiae, Crystal Christine Crook

Graduate Theses and Dissertations

The stress response of Saccharomyces cerevisiae is a valuable area of study for understanding cellular adaptation mechanisms that govern survival in fluctuating environments. This dissertation investigates stress response regulation in yeast through the roles of Hog1 mitogen-activated protein kinase (MAPK) and the post-transcriptional regulator Mkt1, a key post-transcriptional regulator, in diverse wild yeast isolates. Hog1 is traditionally known for its central role in osmotic stress regulation in the high-osmolarity glycerol (HOG) pathway. This study expands the functional scope of Hog1 to include oxidative and ethanol-induced stress responses.

In parallel, we investigate post-transcriptional regulation of stress responses by the Mkt1 interactome, …

Evaluation Of Fluridone In Rice, Maria Carolina De Carvalho Rocha Souza

Graduate Theses and Dissertations

The increasing pressure of Palmer amaranth [Amaranthus palmeri (S.) Watson] in rice (Oryza sativa L.) fields demands new chemical control options to manage this weed. The recent labeling of fluridone on this crop from the three-leaf rice stage offers an additional residual herbicide for battling Palmer amaranth; however, research is needed to evaluate its effectiveness and rice tolerance. Field experiments were conducted to evaluate Palmer amaranth control and rice tolerance to fluridone across different locations in Arkansas in 2022, 2023, and 2024. Preemergence (PRE) applications of fluridone at 168 g ai ha^⁻1; (1× label rate) and 336 …

Real Time Adaptive Control Of A Pid Via Genetic Algorithm Machine Learning Systems, Cemre Tas

Graduate Theses and Dissertations

The most common control method that is utilized by all industries across the world is the proportional-integrative-derivative controller (PID) due the relatively low cost and complexity of the system. However, there are draw-backs with PIDs, it is not adaptative to a changing system, so it works on nominal systems, and it starts breaking down when a system begins to have a non-linear response. The method chosen to overcome both is the utilization of machine learning with the use of genetic algorithms.

This method allows any PID system to be capable of adapting in real-time, while not adding significant additional cost …

Controls On Nutrient And Sediment Export In A Non-Perennial Agricultural Stream, Kathleen Cutting

Graduate Theses and Dissertations

Climate change is expected to increase flow variability and intermittency in streams, changing the magnitude and timing nutrient and sediment delivery. This may exacerbate water quality issues in agricultural landscapes, where nutrient and sediment inputs are often elevated. Elevated nutrients can drive eutrophication in downstream waterways, and excess sediment loss can decrease primary productivity. Non-perennial headwater streams are particularly vulnerable to the impacts of climate change and agriculture as they serve as key sites for nutrient cycling at the terrestrial-aquatic interface. Despite their importance, the interactive effects of agriculture and stream intermittency, as well as unpaved roads in rural watersheds …

Nonparametric Methods For Bayesian Community Detection In Complex Networks, Kedran Young

Graduate Theses and Dissertations

Network analysis is becoming an increasingly popular interdisciplinary area of study, with emerging interest in fields like sociology, biology, economics, and ecology. Within the niche of network analysis, capturing the community structure of a network is one important achievement that many statisticians have been working toward over recent decades. The most popular modeling technique for latent community detection is the Stochastic Block Model (SBM), which falls into the category of latent variable models and will serve as the baseline model throughout this thesis. SBM is widely regarded as the most effective community detection method as it detects latent community membership …

A Robust Rf Fingerprinting Approach Using Physics-Informed Neural Networks, Jozef Dusenka

Graduate Theses and Dissertations

Radio frequency (RF) fingerprints, caused by unique imperfections in communication hardware, offer a promising solution for zero-trust security. However, existing RF fingerprinting techniques, which aim to extract these signatures from transmitters to uniquely identify devices, often struggle with robustness in the face of temporal and spatial variations in real-world, time-varying wireless environments. For example, a neural network trained on RF signals collected on Day 1 can experience a significant performance drop when tested with data from Day 2.

To address this challenge, we propose a novel, robust RF fingerprinting method based on Physics-Informed Neural Networks (PINNs). Rather than training the …

The Rhetorical Use Of The Lower Classes In Three Primary Accounts Of The First Crusade, John Hannon

Graduate Theses and Dissertations

This study analyzes the rhetorical use of the lower classes in three primary accounts of the First Crusade: Albert of Aachen, the Gesta Francorum, and Raymond of Aguilers — specifically with an eye towards the proper maintenance of the order of society through everyone performing their assigned role. Through a close reading of these three texts this study demonstrates how the three authors engage with and uphold versions of the idealized three orders model of medieval society. Though there is nuance between each source, broadly, each of the authors presents the lower classes as a force that needs to …

Leveraging Natural Variation In Yeast To Understand Susceptibility Differences In Parkinson’S Disease, Julio Andres Molina Pineda

Graduate Theses and Dissertations

Parkinson’s Disease (PD) is a neurodegenerative disorder that causes countless suffering around the world. Both forms, familial and sporadic, have been associated with the misfolding and cytotoxicity of α-synuclein, an otherwise non-pathogenic protein suspected to have various roles in the normal maintenance of the central nervous system. Model organisms have emerged as great vessels to uncover the cellular and molecular mechanisms that shape α-syn biology, and great strides have been made to understand it. Yet, it is still unclear why some individuals are affected by α-syn toxicity, while others not so much. Since it’s extremely complicated to study and probe …

Literary Postcritique And American Transcendentalism: Helping Students Practice Community-Building By Rewilding Literature In The Classroom, Tate Aldrich

Graduate Theses and Dissertations

Literary postcritique is an emergent theoretical approach to literature that has elicited skepticism among many in academia because of its central claim that their unchecked overreliance on suspicious and symptomatic reading styles is diminishing the pedagogical potential of our reading together. To restore this potential, Rita Felski, a champion of literary postcritique, suggests adopting an aesthetic reading style, a mid-level interpretation that neither indulges in the formalists’ habits of close scrutiny nor in the cultural critics’ wider lens of political and social contexts. In The Limits of Critique and Hooked, Felski argues that an aesthetic reading style can develop …