Digital Commons Network^™

News Media Coverage And Framing Of Human Trafficking In The United States, Chloe Junkerman

Graduate Theses and Dissertations

This study examines what makes mainstream news media representations of human trafficking cases newsworthy, and how news media choose to frame sensationalized human trafficking stories. While there have been several notable studies examining news media framing of human trafficking as a social issue more generally, prior research has yet to empirically investigate how the news media cover specific human trafficking cases, thus overlooking what types of attributes make cases newsworthy. This is an important gap in research as the types of cases that get covered, or ignored, by news media, and how stories frame various aspects of these crimes, informs …

Desire Lines: Reading Queerly Through The Forests Of Medieval Love Literature, Brianna Skye Oliver

Graduate Theses and Dissertations

This dissertation conducts queer eco-sensitive readings of a selection of medieval love texts in Middle English and Old French. Informed in turns by the works of feminist, queer, and ecocritical scholars, each chapter engages with a different iteration of literary queerness by bringing the representation of natural spaces and objects (especially the forest) to the fore and reading through nature depicted in the texts. The readings all share a broad goal of inviting modern audiences to play with desire and its manifestations within each text to make meaning and compel intimacy between the work and its current audience. Chapter 1 …

An Exploratory Multiple Case Study Of Special Education Transition Program Structures In Virtual Public Charter Schools, Krystle Merry

Graduate Theses and Dissertations

This dissertation research is an exploratory multiple-case study of special education transition program structures in three virtual public charter schools in a southern state in the United States. Virtual public charter schools are extensions of public school systems or districts that are required to comply with state and federal-mandated special education transition services to ensure students with disabilities receive a Free Appropriate Public Education (FAPE) under the Individuals with Disabilities Education Act (IDEA, 2004). This study aims to explore transition Program Structures within the Taxonomy for Transition Programming 2.0 (Kohler et al., 2016) at the systemic level based on the …

Effects Of Land Cover And Land Change On Monarch Butterfly Presence Across The Conus, Chris R. Burkhart

Graduate Theses and Dissertations

The decline of monarch butterfly populations (Danaus plexippus L.) over the past four decades, particularly in their overwintering habitats, has raised concerns about the species' conservation. Habitat loss and modification, particularly within the contiguous United States, are attributed as one of the key drivers of this decline. However, the specific impact of land use and land cover (LULC) changes on monarch distributions remains inadequately documented. This study integrates monarch observations from multiple sources spanning 2008 to 2019 with LULC data to analyze the relationship between habitat configuration and monarch presence. Using a randomized grid sampling approach, habitat configuration metrics were …

‘Catching Zzz’S And Feelings’: A Study Examining The Link Between Sleep And Emotional Intimacy Among Sexual Assault Survivors, Anna Marie Thi Thanh Nguyen

Graduate Theses and Dissertations

The impact of sexual assault can be significant, including an increased likelihood of subsequent negative psychological and physical outcomes, even compared to other trauma types. Further studies indicate that individuals who have experienced sexual assault are more likely to struggle with interpersonal relationships. Sleep is a transdiagnostic process and disrupted sleep is a prominent feature of post-trauma related symptoms. Sleep is also implicated in social cognitive processes that are used to establish emotional intimacy in interpersonal relationships. The goal of the current study is therefore to examine the relations among sexual assault exposure, sleep, and emotional intimacy. A two-part study …

Effects Of An Interdependent Group Contingency On Classroom Behavior And Teacher-Student Relationships For Students With Behavioral Support Needs: An Initial Investigation Of Cw-Fit Ms Tier 1 In Inclusive Secondary Settings, Nancy Ruth Young

Graduate Theses and Dissertations

A wide body of literature has documented the disproportionality in exclusionary discipline rates (Gregory et al., 2010; Losen et al., 2015; Office of Special Education Programs, 2020; Skiba, 2014; Welsh & Little, 2018). Students with disabilities or other minority backgrounds are removed from their classrooms at higher rates than their peers (Losen & Gillespie, 2012; Office of Special Education Programs, 2020). Such punitive practices have been associated with negative outcomes for the most at-risk youth. Thus, educational stakeholders have begun to move away from these punitive practices toward more positive behavior management methods. This study sought to examine the impact …

Feasibility Study For The Application Of A Solar Powered Absorption Chilling System For Cooling Poultry Houses In Northwest Arkansas, Matthew James Kelly

Graduate Theses and Dissertations

This paper investigates the economic feasibility of utilizing a solar-powered absorption chiller to provide cooling for poultry houses in northwest Arkansas. An existing thermodynamic model of a poultry house was modified to account for cooling. A simulation was performed using actual weather data from Fayetteville, Arkansas for 26 flocks of broilers at four cooling capacities for the 2020, 2021, and 2022 calendar years. Based on the simulation, the savings from reduced electricity use for ventilation and the cost of the required absorption chiller and solar thermal array for an 8-house farm were calculated. While providing cooling was found to reduce …

Strategies For Misinformation Correction: Evidence For The Power Of Negation, Angel Houts

Graduate Theses and Dissertations

The current study investigated the effectiveness of different correction strategies for misinformation using a 2 (Source: no source, credible source) x 2 (Structure: negation, affirmation) within-subjects design with an additional control condition that had no corrections. Participants read 40 Twitter-like statements, which included 25 pieces of misinformation and 15 truthful statements, and rated their emotional responses on a Likert scale. After completing a distractor task, participants read additional Twitter-like statements across five different conditions. The first four conditions aimed to correct misinformation: negation with a credible source, negation without source, affirmation with a credible source, affirmation without source. The fifth …

Struvite Effects On Greenhouse Gas Emissions From Flood- And Furrow-Irrigated Rice In The Greenhouse, Chandler Arel

Graduate Theses and Dissertations

Over time, as the influences of climate-change and declining, mineable, global phosphorus (P) reserves begin to impact agricultural production systems, alternative fertilizer sources and management practices, such as struvite (MgNH₄PO₄ · 6H₂O) and furrow-irrigation, will be necessary to accommodate nutrient and water demands. The precipitation and use of struvite as a fertilizer-P source could reduce environmental damages caused by nutrient-rich wastewater streams, supplement domestic P supply, and improve the sustainability of flood-, and furrow-irrigated rice production by reducing greenhouse gas emissions. The study of struvite from both chemical and electrochemical precipitation processes is well documented, …

Atypical Responses To Sensory Stimuli Or Eating Environments In Children With Autism Spectrum Disorder, Lydia Rockers

Graduate Theses and Dissertations

Children with autism spectrum disorder (ASD) often encounter challenges in processing sensory inputs. Children with ASD may experience feeding difficulties and over- or under- stimulation during food-related activities such as eating or shopping. These have impacts on the health and well-being of individuals with ASD in childhood and throughout their lives. Further research is needed to address the impact of ambient sound levels in a retail or restaurant setting. The main objective of this thesis was to address these gaps by identifying responses to various environmental and food related stimuli. The findings of this research addressed differences in responses between …

Modification Of Time-Domain Terahertz Spectroscopy System To Polarimetry Imaging System With Application To Human Breast Cancer Surgical Specimen, Nikita Gurjar

Graduate Theses and Dissertations

Breast-conserving therapy (lumpectomy) is one of the most performed breast cancer surgeries in the United States. The best outcome of lumpectomy surgery is achieved when the surgical margins are free of cancer. When remnants of cancer are detected at the surgical margins after the initial operation, a second operation will be required to remove the cancer. Unfortunately, a significant number of patients undergo breast conserving surgery (BCS) at local hospitals that do not have access to immediate on-site pathology leading to high rates of re-excision or reoperation (greater than 30%). Therefore, there is a significant need for new intraoperative technology …

Synthesis Of Nanoparticles And Their Applications In Power Module Packaging And Organic Electronics, Xinsong Zhang

Graduate Theses and Dissertations

Nanoparticles can greatly change the properties of regular materials due to their special structures. In this research nanoparticles, such as silver nanowires, silver nanospheres and expanded graphite, are used in interconnection materials for power module packaging, and in conductive films for organic electronics. Silver nanowires synthesized by polyol synthesis, are used as fillers in micron silver paste. The electrical and mechanical properties of the sintered hybrid silver paste are investigated and compared with those of micron silver paste. The composites of silver nanospheres and expanded graphite are mixed with PEDOT:PSS solutions in 5 different weight ratio. The electrical and optical …

Development Of Iii-V And Iv Epitaxy On Sapphire Technology, Emmanuel Wangila

Graduate Theses and Dissertations

This research presents comprehensive insights into the epitaxial growth of germanium (Ge) on c-plane sapphire substrates using molecular beam epitaxy (MBE). The direct growth of Ge on sapphire typically yields three-dimensional (3D) Ge islands with diverse growth directions, multiple primary domains, and twinned crystals. However, incorporating a thin AlAs nucleation layer proves instrumental in enhancing surface and material quality. With a 10 nm AlAs layer, the achieved surface exhibits improved characteristics, including a smoother surface, single epitaxial orientation, sharper rocking curve, and a single domain. This study surpasses previous works by achieving a single primary domain and reducing twinning. Furthermore, …

Intellectual Humility And The Role Of Feedback On Children’S Intellectual Humility Expression, Christina M. Barnes

Graduate Theses and Dissertations

Intellectual Humility (IH) is the ability to recognize, acknowledge, and act, on the fallibility of one’s own knowledge (Porter et al., 2021). IH is associated with many positive outcomes including intellectual curiosity, tenacity, open-mindedness, and mastery behaviors (Leary, 2018; Porter & Schuman, 2017, Porter et al., 2020) leading some to believe IH is the promotion of IH as the next great educational virtue. Some scholars argue however, that too much IH can lead to Intellectual Servility which is associated with negative outcomes such as maladaptive perfectionism, need for cognitive closure, and less willingness to change a belief when presented with …

Student Perceptions And Academic Performance When Taught With Multiple Active Learning Methods In A High Enrollment Undergraduate Human Physiology Course, Kate Ireton Walker

Graduate Theses and Dissertations

When instructing very large groups of students in science, it can be difficult to engage all students in the content and measure their understanding. A major unaddressed challenge in science instruction is how specifically to design and implement strategies that engender active learning particularly in high-enrollment undergraduate courses. Active learning, which represents a diverse set of strategies, may include student engagement as part of instruction through discussions, active movement, and application (Bernstein, 2018; Cavanagh, et al. 2016; Michael, 2006 & Wilke, 2003). This study was designed to provide data addressing the gap in the literature regarding how the continual implementation …

Optimization Of And Mechanistic Insights Into Photocatalytic And Non-Thermal Plasma Degradation Of Organic Pollutants For Sustainable Wastewater Treatment, Yiting Xiao

Graduate Theses and Dissertations

Water pollution by organic pollutants poses a significant environmental threat, necessitating the development of advanced treatment technologies to ensure sustainable and efficient remediation. This dissertation explored innovative approaches to enhance the degradation of organic pollutants through the integration of photocatalytic and plasma-assisted systems, with a focus on optimizing these processes using methodologies ranging from response surface methodology (RSM) to advanced machine learning techniques. The first part of the dissertation investigated the degradation of organic pollutants in flocculated liquid digestate using photocatalytic titanate nanofibers (TNFs) synthesized via a hydrothermal method. This study represents the first application of TNFs, with a bandgap …

Neural Interactions In Bottom-Up Communication, Prashant Chama Raju

Graduate Theses and Dissertations

The visual system’s remarkable ability to process vast amounts of sensory information rapidly and accurately is fundamental to cognitive neuroscience. This study investigates a key aspect of this capability: the compartmentalization of information into feature-specific subspaces during bottom-up communication. My primary question was: does Canonical Correlation Analysis (CCA) reveal a subspace that encodes color and direction of moving dot stimuli? I found that the first canonical component (CC1) does an excellent job decoding the stimuli, despite being one-dimensional while the stimuli were drawn from a two-dimensional space (red-green and up-down plane). I demonstrate that motion features are processed within distinct …

Esd-Robust 4h-Sic Low-Voltage Cmos Technology Development For High Temperature, Hui Wang

Graduate Theses and Dissertations

This dissertation explores the development and optimization of electrostatic discharge (ESD)-robust, low-voltage CMOS technology using 4H-silicon carbide (SiC) tailored for high-temperature applications, addressing the critical need for reliable semiconductor devices in harsh environmental conditions. The advent of SiC as a semiconductor material offers significant advantages over traditional silicon (Si) in harsh environments, including higher thermal conductivity, greater electron mobility, and improved electrical characteristics at elevated temperatures. This research explores the integration of 4H-SiC into CMOS technology to enhance device reliability and performance in extreme conditions such as those found in aerospace, automotive, and energy sectors. The study begins with a …

The Influence Of Commercial Salmonella Vaccination Programs On Local- And Systemic-Immune Responses And Ceca Microbiome In Egg-Type Chickens, Chrysta Noelle Beck

Graduate Theses and Dissertations

Salmonella vaccination is a widely accepted practice in the United States poultry industry. These vaccines stimulate a strong humoral response to Salmonella serovars and significantly reduce Salmonella load in the bird. In general, a Salmonella vaccination program for an egg-type pullet flock consists of two administrations of a live attenuated Salmonella vaccine at 1- and 6-wk-of-age followed by one administration of a Salmonella bacterin at 12-wk-of-age. Although these vaccines are regarded as effective against paratyphoid Salmonella infections, there are incidences of breakthrough Salmonella infections and severe injection site reactions after bacterin administration. Therefore, the main objective of this dissertation was …

Tuning Electronic Transport And Magnetic Properties Of Layered Magnetic Materials, Md Rafique Un Nabi

Graduate Theses and Dissertations

Two-dimensional magnetic materials (2DMMs) have gained significant interest due to their potential for novel physical phenomena and device applications. Mn_2-xZn_xSb, with its tunable magnetic properties and stable tetragonal layered structure, offers a rich platform for exploring these phenomena. The introduction of Zn into the Mn₂Sb lattice efficiently tunes magnetic and electronic properties, making it a compelling candidate for high-performance spintronic devices.

With this motivation, we synthesized Mn_2-xZn_xSb (0 ≤ x ≤ 1) single crystals using a flux method. Mn2Sb exhibits ferrimagnetic order below 550 K with antiparallel spins aligned along …

Students' And Teachers' Perceptions Of Play On Students' Classroom Behavior, Melissa Bradt

Graduate Theses and Dissertations

Play is an integral part of human nature. Research has demonstrated that play supports physical, socio-emotional, and cognitive development in children and even adults. However, according to the American Association for the Child’s Right to Play (2024), 40% of school districts in the U.S. have eliminated or reduced recess in order to promote academic excellence as measured by standardized tests. How does the reduction in play time influence students’ classroom behavior? An examination of this question has tremendous theoretical and societal impact as it informs the influence of the environment on human development. This fundamental question in human development has …

Quantum Modeling & Experimental Studies Of Radical Chemistry, Justin Michael Barrett

Graduate Theses and Dissertations

This work describes two projects centered around radical chemical mechanisms. The first investigation generalized the utility of a C-N bond homolysis followed by a [1,3] – rearrangement synthetic strategy found possible in N-alkylated thiazole & benzothiazole species onto analogous systems. Computational investigation guided the inquiry on structurally analogous systems that would favor a radical, [1,3] – rearrangement. Herein, we describe the implementation of that mechanism to transform Breslow Intermediate-like substrates into tertiary alcohol and amide products under facile conditions. We confer on the proficiency of this strategy with 2-pyridinemethanol and the problematic implementation with 2-(aminomethyl)pyridine. The second investigation solved a …

Controls On The Development Of Hummocky Topography On Debris-Covered Glaciers, Ryan M. Strickland

Graduate Theses and Dissertations

Rock debris covers many glaciers in Earth’s highest mountains and the debris impacts glacier response to changes in climate. Interactions between debris, drainage, glacier dynamics, and climate produce contrasts in melt rates that cause debris-covered glaciers to develop complex, hummocky topography. Contrasts in melt rate produce thousands of hills–hummocks–and depressions. Ponds and ice cliffs often form in the depressions. Although ponds and ice cliffs occupy only a small fraction of the surface, they account for nearly half of glacier melt. Understanding the processes that control the development of hummocky topography is key to predicting the evolution of debris-covered glaciers. In …

On Laudenbach-Type Exact Sequences, Jorge Andres Robinson Arrieta

Graduate Theses and Dissertations

Laudenbach proved that the mapping class group of the connected sum of $n$ copies of $S^2 \times S^1$ is an extension of $\text{Out}(F_n)$ by a finite group. Brendle, Broaddus and Putman proved that this exact sequence splits. We provide an explicit section $s$ of this split exact sequence. Given a locally finite graph $\Gamma$, Udall proved that the mapping class group of the doubled handlebody associated to $\Gamma$ is an extension of $\map(\Gamma)$ by a possibly infinite direct product of $\Z_2$, and proved that this exact sequence splits. We provide an explicit formula for this section $s$ of $\Psi$ restricted …

Memories Of Gimjang_김장: And Performance As The Practice Of Freedom, Chung Park

Graduate Theses and Dissertations

Memories of Gimjang_김장: and Performance as the Practice of Freedom reflects my response to a feeling of isolation as a Korean American MFA graduate student living in Northwest Arkansas for the last three years. This experience led me to an endless search for identity and place, compelling me to reach into my past and cultural history in relation to the present. To satiate a sense of home in this world, I turned to an artistic intervention to translate the indecipherable, which brought to life my thesis performance, Gimjang_김장:. Gimjang_김장: allowed me to reveal multitudes of experiences and imagined a possibility …

Green At Eye Level: From Measurement Approaches To Simulated Models And Inequality Assessments In U.S. Major Cities, Jingjing Yan

Graduate Theses and Dissertations

This dissertation delves into the multifaceted dynamics of urban greenness, addressing critical aspects of sustainable urban development. Providing urban green spaces has been widely acknowledged to offer numerous benefits to individuals and communities. Recently, there has been a growing recognition of the importance of evaluating urban greenness from a human-centered perspective, partly due to the rapid development of eye-level greenness measurement. First, to provide a comprehensive overview of measurement approaches and topics related to eye-level urban greenness, a systematic review of 77 papers was conducted in this research. This review revealed that street view images are the primarily utilized data …

Sincerely, Regan Leigh Chrisman-Boman

Graduate Theses and Dissertations

Sincerely is a compilation of diaristic narratives depicted through the lens of a distorted reality. This distortion is manifested through the influence of social norms placed on me and my gendered experience of this world. The stories I tell through my work deal with the mind, body and daily life. My images within this body of work are sourced from my written journal, and creating a visual diary. I provide a space of relatability for the viewer to feel seen and not alone through the discussion of personal experiences that are both unique and not unique to myself. The work …

In The Performance Of A Lifetime: Pepper Plinkett, Lily Camille Hollinden

Graduate Theses and Dissertations

This narrative depicts a caricature of the human experience through the eyes of my alter- ego character, Pepper Plinkett. Pepper is a symbol of my personal philosophies of what it means to be human, and serves as a protagonist and guide through an infinite, ambiguous natural world. This exhibition is a celebration of the vibrancy, curiosity, and ridiculousness of a lifetime. The uniqueness of humor as a specifically human trait and its use as a tool of communication, particularly in expressing authenticity, is the driving force behind my use of clowns in my work. I take an absurdist approach to …

Fostering Community Among Women Mountain Bikers, Samantha Wischmeyer

Graduate Theses and Dissertations

Although women have shown growing interest in mountain biking in recent years, a disproportionate number of men and women participate, with women representing only one-third of overall riders (The National Sporting Goods Association, 2023). Many women describe feeling insecure and intimidated by what they perceive to be the traditional mountain biking culture (Bordelon & Ferreira, 2019; Carpiet, 2014; Huybers-Withers, 2015; McCormack, 2020; Nash & Moore, 2021). This research is concerned with fostering a sense of belonging and opportunities for community-building to reduce barriers of entry in mountain biking for self-identified women in Northwest Arkansas. Northwest Arkansas has a highly active …

Addressing Data Limitations Of Commercial Waterways Via Machine Learning And Stochastic Optimization, Sanjeev Bhurtyal

Graduate Theses and Dissertations

Freight transportation is a crucial component of the US economy, with truck, rail, and water contributing significantly to the Gross Domestic Product (GDP). However, challenges arise in maintaining infrastructure capacity to accommodate the growing tonnage and value of freight transportation. Waterways offer high efficiency and environmental friendliness, with the capacity to transport substantial cargo volumes. Utilizing waterways can alleviate bottlenecks in landside transportation, accommodating the rising tonnage of commodity flow in the US. Despite the advantages of waterway transportation, the data limitations hinder informed decision-making regarding port operation and infrastructure investment. The lack of granularity and timeliness in available data …