Digital Commons Network^™

The Association Of Insecure Attachment On Physical And Psychological Dating Abuse: A Longitudinal Study On Young Adult Romantic Relationships During The Covid-19 Pandemic, Marissa S. Dongarra

ETD Archive

The COVID-19 pandemic has significantly impacted the population’s health and well-being. Specifically, young adults are vulnerable because they are susceptible to mental health disorders (Arnett et al., 2014). One area in particular that may affect mental health is romantic relationships. Previous literature has shown increased difficulties and conflict (Luetke et al., 2020), and increased withdrawal and hostility (Pietromonaco & Overall, 2022) in romantic relationships during the pandemic. These findings suggest that relationship functioning, such as attachment and dating abuse, may be impacted from COVID-19. Although literature has linked attachment and dating abuse, it is unclear how these are associated during …

Enabling Joint Sensing And Communication For Vehicle-To-Everything Networks, Mohammad Alaneed

ETD Archive

This thesis investigates the challenges and opportunities in designing and implementing joint sensing and communication (JSC) systems in vehicle-to-everything (V2X) environments. This emerging concept in vehicular communication connects vehicles to other vehicles, infrastructure, networks, and pedestrians in a smart transportation environment. To address these challenges and seize these opportunities, a new development model is proposed. The primary objective of this work is to enhance the overall performance of the system while leveraging synergies between sensing and communication tasks. To achieve this, advanced methodologies such as the smooth-MUSIC (MUltiple SIgnal Classifcation) algorithm for Angle of Arrival (AoA) estimation, robust beamforming techniques …

A Framework Of The Antecedents And Outcomes Of Perceived Authenticity Of Corporate Social Responsibility: An Empirical Examination And Perspective Of Employees In India, Janis Thiedemann

ETD Archive

Various stakeholder groups have increased their attention on socially responsible activities, which has resulted in companies pursuing strategies that not only meet legal obligations or increase profits, but also somehow benefit society. The perceived authenticity of corporate social responsibility (CSR) initiatives (i.e., whether or not they are seen as driven by organizational values) is crucial in determining the success and acceptance of CSR programs. However, the extant CSR literature includes notable gaps, including that much of the research on CSR authenticity has been from the perspective of external stakeholders, few studies have been performed in emerging markets, and the use …

Motion Analysis Of Feeding Tasks: Brachial Plexus Versus Control Subjects, Madison M. Lovette

ETD Archive

Brachial plexus birth injuries (BPBI) occur in about 0.4 to 4.6 of every 1000 live births due to stretching or tearing of the nerves. Children with BPBI often struggle to perform daily living activities without assistance, including feeding themselves. Upper extremity function is commonly assessed in children with BPBI using the modified Mallet classification, a set of positions representing activities of daily living that are scored according to ability. The hand to mouth position is a Mallet position and is often used to represent feeding tasks in the BPBI population. Establishing this normative data will provide a baseline for comparison …

In-House Processing Of Carbon Fiber Reinforced Polyetheretherketone (Cfr-Peek) 3d Printable Filaments And Fused Filament Fabrication Of Cfr-Peek Parts, Harsha Phanindra Sai Naganboyina

ETD Archive

PEEK is a high-performance polymer known for its exceptional mechanical properties, making it suitable for various applications; however, for certain demanding applications such as automotive, PEEK does not exhibit the required strength. Moreover, if the PEEK parts are developed by Fused Filament Fabrication (FFF)-based 3D Printing, there is a high chance of having PEEK parts with decreased mechanical properties. Carbon Fiber (CF) reinforcement is a well-known method of mitigating the low mechanical properties of PEEK. Hence, in the present study, we attempted to develop CF-reinforced PEEK (CFR-PEEK) parts via FFF. First, we developed homogeneous CFR-PEEK mixtures via ball milling and …

The Overuse Of Advanced Technology And Its Impact On Earlier Signs Of Digital Dementia, Audriana T. Nguyen

ETD Archive

This research attempted to answer the question if the increased use of advanced technology can impact an individual’s cognitive abilities. Participants (N=73) were recruited from universities by flyers as well as social media platforms including Facebook, Instagram, Snapchat, and LinkedIn. Participants answered a survey pertaining to their social media use, attention difficulties, memory, and quality of sleep using the Likert Scale. The purpose of this research was to quantify if the duration of exposure to technology can be associated with earlier signs of “digital dementia.” While previous research suggest a correlation between technology and its impact on cognition, my data …

Animal-Assisted Therapy: Exploring Practitioners' Perspectives And Experiences, Brianne Markley

ETD Archive

To date, most animal-assisted therapy (AAT) research has examined potential outcomes for clients. Though client outcomes are important to study, only a portion of the intervention can be understood when only one piece of the process is examined. For AAT to become a more credible intervention, there needs to be a more holistic and thorough understanding of the practice. Because practitioners’ experiences in providing AAT have yet to be specifically examined, there is a need for this work at the foundational and exploratory level. Additionally, competency models in psychology training and training of other mental health providers identify many important …

Task, Knowledge, Skill, And Ability: Equipping The Small-Medium Businesses Cybersecurity Workforce, Aadithyan Vijaya Raghavan

ETD Archive

With cyberattacks becoming more frequent and targeted, small-medium businesses (SMBs) are forced to adopt a cybersecurity framework to help secure their cyberspace. While these frameworks are a good starting point for businesses and offer critical information on identifying, preventing, and responding to cyber incidents, they can be hard to navigate and implement. To help with this issue, we propose a comprehensive model of Knowledge, Skills, Ability, and Tasks (TKSA) from the National Initiative for Cybersecurity Education Workforce Framework for Cybersecurity (NICE Framework) for three of the most frequent attack vectors: Phishing/Social Engineering, Malware, and Web-Based Attacks. SMBs can use the …

Select Pathways Revealed In A. Thaliana During Spaceflight Via Meta-Analysis Of National Aeronautics And Space Administration Genelab Data, Zachary Thomas Baham

Master's Theses

In this study, a combination analysis using the pathview and pathfindR packages for the R programming language was performed on a collection of openly available Arabidopsis thaliana sequencing data from the National Aeronautics and Space Administration (NASA) GeneLab to discover broad connections between three primary spaceflight stressor types and altered pathway regulation to provide focused targets for future research. Studies were divided into groups based on their exposure to microgravity, cosmic radiation, or a theorized heat-stress factor caused by reduced convection in certain technologies. Through this study, three major pathways were identified: the phenylpropanoid biosynthesis, proteasome, and starch and sucrose …

Pollinator Diversity On A Shortleaf Pine-Oak-Hickory Restoration Site, Taygan Kohlman

Master's Theses

Land use and cover are increasingly changing due to climate change and anthropogenic activities with many of these changes negatively impacting biodiversity. However, ecosystem restoration may help reverse these patterns. Northern Louisiana was historically dominated by shortleaf pine-oak-hickory forests but has been converted largely to loblolly pine forests with little-to-no herbaceous ground cover. The objective of this study is to determine how different practices on a shortleaf pine-oak-hickory forest restoration site affect pollinator diversity. I sampled pollinators from locations within areas under three different management regimes: 1) prescribed burning with active herbicide treatments for non-desirable plant species, 2) burning only, …

The Impact Of Leaf Litter Diversity On The Colonization Of Aquatic Insects, Daniel Edwards

Master's Theses

Ephemeral pools provide habitat to a wide diversity of aquatic insects which colonize pools to establish new populations in higher quality habitats. These pools rely on nutrient inputs from the surrounding terrestrial landscape, predominantly through leaf litter. Using mesocosms, we tested for the effect of leaf litter diversity (richness and functional diversity) on the colonization of aquatic insects. Leaf litter influences characteristics of a pool (tannins, water color, and nutrients) which may make them more or less desirable to potential colonizers. I added unique mixtures of leaf litter with different numbers of species (0, 3, 5, 7, and 9) and …

Lunar Applications Of Direct Contact Membrane Distillation For Regolith And Hydroponic Water Processing, Mark Wong

Master's Theses

Water management has always been a critical issue facing lunar missions, since its uses are as numerous as they are vital. Using ionic liquids has been proposed for the purpose of processing the metal oxides in lunar regolith into oxygen and metals. The process used dilutes the ionic liquid. Recycling the ionic liquid solution after regolith processing is essential to reduce materials required in resupply missions and to supply oxygen. Water will also be needed for lunar farms to both grow food and assist in maintaining a habitable atmosphere. The use of direct contact membrane distillation (DCMD) technology is a …

Deadwood Facilitates Increased Predators Resulting In Distinct And Functionally Different Leaf Litter Communities, Nicholas Benedetto

Master's Theses

Community structure and ecosystem function may be driven by the amount and size of habitat or energy within an environment, but these metrics (space and energy) are difficult to separate, especially in systems where habitat is also a source of energy such as detritus (dead organic matter including deadwood). Deadwood can impact forest food webs through the creation of habitat and provision of resources and initial differences in wood characteristics may differentially impact food webs. Bark beetles attack and kill pine trees, inoculating them with bluestain fungi (Ascomycota: Ophiostomataceae). Bluestain fungi may increase termite presence in deadwood, and possibly in …

Nutritional Adequacy Of Dietary Intake Among College Students Who Follow A Vegetarian Diet As Compared To Non-Vegetarian Students, Kayanna L. Pulliman

Master's Theses

No abstract provided.

Job Posting, Megan Paul, Nina Williams-Mbengue, Courtney Harrison

QIC-Tips

A job posting must be informative, clear, transparent, and appealing to potential child welfare job candidates. It should also be candidate-centric and answer questions candidates often ask, especially any key information that has turned out to be a dealbreaker for people later in the process. This QIC-Tip is designed to highlight actionable strategies to create a good job posting. Please note that the information presented is not meant to override or supersede local, state, or federal legal civil service or human resources guidance.

Think of the job posting as a marketing opportunity for your agency and highlight the positive aspects …

Digital Implementation Of An Incremental Quantity Directional Protective Relay Element And Its Applications Using An Automated Testing Procedure, Deven Hymel

Master's Theses

This thesis presents the design and analysis of a digital model of an incremental-quantity-based directional protective relay element using the electromagnetic transient program (EMTP). The digital model is based on a similar protective element present in commercially available time-domain-based relays and provides directional fault detection using incremental quantities. Such models are not readily available in transient study programs.

The element’s operating principles are discussed in detail, and the digital design process is outlined. The digital model is designed in a simplified test system, and upon validation using a real-world time-domain-based relay, its performance is analyzed using the model of a …

School Leadership Initiatives: To Promote Equitable And Inclusive Family Engagement Practices For English Language Learners, Lillian M. Holley

Doctoral Dissertations

This qualitative case study aimed to understand and document changes that coincided with a planned district-wide initiative, especially from the perspectives of the school system leadership team and families of English language learners (ELL). The following research questions were addressed in this study: How did school leaders experience the initiative to increase equitable family and inclusive family engagement practices for English Language Learners? How did the parents of ELL students experience change through the initiative? The findings of this study revealed that to work effectively with parents of ELL students, school systems must understand the experiences and needs of these …

Assessment Of Human Performance In Industry 5.0 Research Via Eye-Tracking And Cognitive Biases, Dana Isam Hamarsheh

Doctoral Dissertations

Manufacturing assembly is combining previously made components or subassemblies into a final finished product. The assembly process can be manual, hybrid, or fully automated. Human operators who are involved in assembly use their judgment to perform the process. They collaborate with the other work agents such as assembly machines, robots, smart technologies, and computer interfaces. The recent Industrial revolution, Industry 5.0, exploits human expertise in collaboration with efficient and accurate machines. Manufacturing facilities that feature Industry 5.0 work settings require higher expectations, higher accuracy, sustainability solutions, mass customization of products, more human involvement, and digital technologies in smart workstations. Given …

Peptide Carriers To Improve Uptake And Functionality And To Cross Bbb To Arrest Secondary Injury Post Tbi, Yashwanthi Yanamadala

Doctoral Dissertations

Cell-penetrating peptides (CPP) possess the ability to transport different cargos efficiently across the cell membrane. In this study, the ability of a CPP to cross the blood-brain barrier (BBB) and stably carry therapeutic components across the plasma membrane was assessed. The therapeutic efficacies were determined by the ability of the KAFAK conjugated anti-inflammatory peptide drug to inhibit the progression of secondary neuronal damage in a traumatic brain injury (TBI) model at 7-day post-injury (DPI) by inhibiting the production of inflammatory cytokines. A related study with minocycline and PgP-rolipram was conducted to improve the outcome in TBI models at 14 DPI. …

Transit Priority, Saeid Soleimaniamiri, Xiaopeng Li, Keke Long

Research Reports

To establish an efficient way of improving the service quality of the public transportation system, this research seeks the optimal vehicle scheduling at a multi-conflict area considering heterogeneous vehicle headways and weighted by vehicle occupancies to minimize the total travel time delay cost while giving priority to transits with higher occupancy. A mixed-integer programming (MIP) model is proposed to solve the exact optimal solution to this problem and a customized branch-and-bound algorithm is designed to improve computational efficiency. A set of numerical experiments in various scenarios are tested to demonstrate the feasibility and effectiveness of the proposed model and algorithm. …

The Lived Experience Of Registered Nurses And Registered Midwives In St. Kitts And Nevis, Raiden Alexandra Gaul

Dissertations

At the beginning of the 20th century, St. Kitts and Nevis had one of the highest infant mortality rates in the Caribbean. However, unlike some Caribbean nations with similar historical and socioeconomic factors that continue to suffer from significant health disparities, St. Kitts and Nevis implemented strategic health reforms that have led to dramatic improvements in maternal and neonatal health outcomes. One of the strategic reforms designed to address these poor health outcomes was to mandate that all registered nurses in St. Kitts and Nevis pursue certification in the post-basic midwifery program. The purpose of this study was to examine …

Method Development For Quantifying Micropollutants In Water At Trace Levels With Diffusive Gradients In Thin-Films Passive Samplers, Michael Bradford Howland

Graduate Theses and Dissertations

The United States (US) Environmental Protection Agency (EPA) issued a proposed National Primary Drinking Water Regulation in March 2023 for six per- and polyfluoroalkyl substances (PFAS), which included maximum contaminant levels (MCLs) of 4.0 ng•L−1 for perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS). These MCLs were based on current method detection limits (MDLs) for aqueous-phase grab samples achievable at certified analytical labs throughout the US. In June 2022, the US EPA issued the interim lifetime health advisory levels for PFOA and PFOS of 0.004 ng•L−1 and 0.02 ng•L−1, respectively, which presently cannot be reliably quantified using existing PFAS methods. …

Death Like Dreaming, Junli Song

Graduate Theses and Dissertations

This written dissertation accompanies my thesis exhibition, Death Like Dreaming, which took place in Sculpture Gallery in the spring of 2023. This show was the culmination of my MFA at the University of Arkansas and centered around my most recent zhenmushou sculpture. I began making these mythical beings from my mythology in the summer of 2022. This essay will provide theoretical, historical, and personal context to the work, expanding upon my artistic journey and exploration during my degree. I will focus on my conceptual and formal decision making, areas of research, and discuss the world building and personal mythology that …

Biochar As A Lake Management Option For Harmful Algal Blooms: Lab Experiments And Bioassays, Brittany Mc Intyre

Graduate Theses and Dissertations

Harmful Algal Blooms (HABs) are an increasing global concern for water management due to their increased frequency, distribution, and toxin production. In freshwaters the growth of cyanobacteria (commonly known as blue-green algae), due to anthropogenic nutrient enrichment is the primary driver of HABS; these are often referred to as cyanoHABs. The management of cyanoHABs should be focused on in the watershed through best management and conservation practices or the physical, chemical and biomanipulation of the lake or reservoir that is experiencing these blooms. In this study, we examine the use of biochar as an option for the management or treatment …

Improving Tribological Properties Of Polydopamine/Polytetrafluoroethylene Coatings Through Incorporating Core-Shell Nanoparticles And Laser Surface Texturing, Firuze Soltani-Kordshuli

Graduate Theses and Dissertations

Polytetrafluoroethylene (PTFE) is a widely used polymer that has unique properties such as chemical and temperature resistance, corrosion resistance, low maintenance cost, and a very low coefficient of friction (COF). These distinctive properties have made PTFE a promising candidate for industrial applications where surfaces are in relative motion. PTFE can be utilized as a thin film solid lubricant to significantly reduce the friction between moving surfaces. However, PTFE coatings have low cohesion and poor adhesion to the substrate resulting in its low wear resistance. This fact limits the application of PTFE coatings in load-bearing situations. To address these limitations, an …

On The Micro-Mechanical Property Characterization And Bulk-Volume Behavior Prediction Of Additively Manufactured 17-4 Ph Stainless Steels, David González-Niño

Graduate Theses and Dissertations

Selective laser melting is an additive manufacturing technology that opens the possibility to manufacture components with complex geometries that are difficult with traditional manufacturing techniques which could benefit engineering applications such as aviation or structural engineering. However, the lack of a reliable universal predictive model for selective laser melting components could impede the full implementation in industrial applications. Therefore, this dissertation investigates the mechanical behavior of selective laser melting 17-4 PH stainless steel under ultra-low cycle fatigue regime and propose a novel micro-mechanical based modeling using statistical and representative volume element. The first phase of this project examined the mechanical …

Experimental Design For Determining The Cyclic Behavior Of Skewed Reduced Beam Section Moment Connections Having Composite Slabs, Paul Chabaud

Graduate Theses and Dissertations

This paper details the experimental design for determining the cyclic behavior of skewed Reduced Beam Section (RBS) moment connections having composite slabs. The effects of composite concrete slabs on skewed RBS connections subjected to cyclic seismic prequalification loading are addressed in this test setup. Full-scale double-sided RBS SMF specimens representing both interior and exterior column connections are designed and fabricated in this work. Experimental test fixturing and a lateral load application setup within the existing Grady E. Harvell Civil Engineering Research and Education Center (CEREC) are designed. All cyclic loading protocols required for the prequalification testing are described herein. Prequalification …

Development Of Self-Stressing Ultra High-Performance Concrete Using Expansive Chemical Admixtures, Lane Edwards

Graduate Theses and Dissertations

This study investigated the effects of expansive chemical admixtures on ultra-high performance concrete (UHPC) and self-stressing mechanisms. A literature review was performed to determine different types of expansive admixtures for feasibility of the self-prestressing concept. Ultimately it was decided that type-k cement, made by combining Komponent admixture with conventional UHPC, was the most suitable option due to its effects on wet and hardened concrete properties. Mix designs with varying amounts of Komponent were developed to test the effects the admixture had on various properties. Tested properties included, workability, compressive strength, expansion, short-term shrinkage, long-term shrinkage, and developed prestress. The development …

Personal Equation, Nicholas Hobbs

Graduate Theses and Dissertations

The body of this paper is a formatted version of text which exists natively on the web and is accessible at www.personalequation.art. Its non-linear narrative is meant to accompany and mirror, not describe, the artwork in the exhibition. The following two paragraphs are copied from the exhibition statement accompanying Personal Equation, which is on view in the Reading Room at the Fayetteville Public Library from April 3 to June 30, 2023: A personal equation is one that attempts to account for the inevitable role of subjectivity in scientific observations. The term was coined by astronomers in the 18th century who, …

Evaluation Of Hydrogeochemical Characteristics Of San Joaquin, Tulare, And Mojave Aquifers, Southern California, Maedeh Hassanvand

Graduate Theses and Dissertations

Before making attempts to enhance and manage the quality of water, a thorough understanding of these processes is necessary since the chemical quality of groundwater is impacted by a number of linked processes. This would be more important in arid and semiarid regions like the southern part of California where more rely on groundwater for agriculture and drinking water uses than the other states. As a result, fundamental knowledge of the governing processes of groundwater chemistry is required for effective water resource management. Thus, this study is primarily concerned with three aspects in Mojave, Tulare, and San Joaquin aquifers: The …