Digital Commons Network^™

Evaluation Of The Effect Of A Commercial Lippia Origanoides Essential Oil Extract On Salmonella Serovar Enteritidis As A Natural Alternative To Antibiotics In The Poultry Industry, Abdiel Atencio

Graduate Theses and Dissertations

The purpose of the present research was to evaluate the bactericidal activity of a microencapsulated Lippia origanoides essential oils (LOEOs) against Salmonella Enteritidis (SE) in an in vitro crop assay and in a prophylactic broiler chicken model using three low doses of the product: 75 ppm, 150 ppm and 300 ppm. Two trials of each assay were conducted. Day-of-hatch male Cobb-Vantress broiler chickens were randomly allotted to one of four groups: 1) positive control group; 2) 75 ppm LOEOs group; 3) 150 ppm LOEOs group; 4) 300 LOEOs group. Chicks were fed and watered ad libitum in heated brooder batteries …

Examining The Impact Of Parental Punishment And School Punishment On Delinquency And Criminal Justice Contact, Mia Robert

Graduate Theses and Dissertations

Prior research states the important role that both parents and schools play in setting children up for success. However, few researchers have studied how parents and schools work in tandem to achieve these outcomes. The current study aims to fill this gap by understanding the relationship between parental harshness and exclusionary discipline at age 9, specifically suspension, and how it affects delinquency and later criminal justice contact at age 15. Using longitudinal data from the Future of Families and Child Wellbeing Study (FFCWS), this study aimed to answer the following two research questions: 1) Does increased parental harshness and harsh …

Fabrication And Characterization Of Black Phosphorus Terahertz Photoconductive Antennae, Katie Michelle Welch

Graduate Theses and Dissertations

Advancements in terahertz (THz) imaging systems, particularly for applications like post-surgical analysis of breast cancer, have led to the exploration of novel materials such as black phosphorus as the active material for a THz photoconductive antenna (PCA). This thesis, motivated by innovative techniques developed at the University of Arkansas, investigates the potential of black phosphorus as a material to enhance the performance of THz PCAs, focusing on generation efficiency and bandwidth. Previous implementations of BP as THz emitters have shown limitations, highlighting the need for thorough material characterization and optimized fabrication processes. Therefore, we adopted a dual-phase approach to this …

Competition And Criticality In Cortical Neural Circuits Underlie Behavior And Optimize Working Memory, Jacob Harrison Barfield

Graduate Theses and Dissertations

One of the primary goals of neuroscience is to explain how brain function emerges from dynamic interactions among large populations of neurons. A long-standing hypothesis at the interface of physics and neuroscience posits that neural circuits may operate close to the critical point of a phase transition. In this dissertation, we will investigate a new form of criticality and the implications that it has in working memory and the generation of voluntary body movements. We will utilize this new form of criticality to investigate the functional benefits that can be harnessed by operating near the critical point when performing working …

Heterogenous Impacts Of Pathogenic Avian Diseases On Global Poultry Production, Elsbeth Hamilton

Graduate Theses and Dissertations

Globally, poultry is one of the most versatile and cost-effective sources of animal-based protein. Due to its wide variety of uses and variability of growing styles, poultry production is applicable in nearly every country. With the increase of scale and concentration of production, pathogenic diseases have decreased the efficiency of production through worsened feed conversion, morbidity, and mortality. In addition to physiological health, climate largely impacts the suitable conditions for growing. With more extreme climate events, locations once ideal for poultry are less efficient due to increased resource cost. This analysis seeks to determine the heterogeneity of production and the …

The International Experience: Foreigners In Fayetteville, Khadn Blaine Adderley

Graduate Theses and Dissertations

This project is aimed toward showcasing the stories of some international students who currently attend or recently attended the University of Arkansas and have lived in Fayetteville, Arkansas. With the University of Arkansas being home to a range of international students from all over the world, it’s important to get an understanding from some of those students who leave their home country to spend the next four years as a member of the Fayetteville community. This project is a podcast that is split up into four episodes, highlighting the experiences of international students, University of Arkansas employees who assist with …

Exploring Diversity, Discrimination, And Performance Dynamics, George Agyeah

Graduate Theses and Dissertations

This dissertation utilizes empirical and experimental approaches to investigate the multifaceted factors that affect decision-making in economic contexts. The three chapters place a particular focus on group affiliation, perceived discrimination, and the gender gap in entrepreneurship. The first chapter explores the impact of team diversity on economic decision-making within a dynamic context. Through a series of laboratory experiments involving participants randomly assigned to teams, the study examines how team diversity influences individual behavior and performance. Results indicate that team diversity significantly affects individual behavior, with newcomers being particularly influenced by the diversity of the team they join. The findings underscore …

Guaraní Sexuality And Contestations Over The Old Way Of Being, Robert Miles Berry

Graduate Theses and Dissertations

The Jesuits in seventeenth century Guairá attempted to shift the sin of adultery and polygyny away from Guaraní men, and onto Guaraní women in their process of evangelization in Paraguay. The Jesuits did so because Guaraní men, as influential patriarchs within the missions, would revolt against the Jesuits or flee the Jesuit missions in response to Jesuit indoctrination that denounced the practice of polygyny. This is evident through two works of the Jesuit Antonio Ruiz de Montoya: one lexical, the Tesoro, and the other narrative, the Conquista. Montoya was directly involved in the founding and maintenance of the Guaraní missions, …

Outcome Measures Or Graduation Rates, That Is The Question, Miran Kang

Graduate Theses and Dissertations

The study compared the Outcome Measures (OM) to the traditional Graduation Rates (GR) to ascertain if OM portrayed the performance of higher education institutions differently than GR and to determine which of the two metrics aligned better with accountability policy objectives. GR refers to the percentages of first-time, full-time students who obtain a degree or certificate within 150% of the normal time. OM presents the award status of all degree/certificate-seeking undergraduate students on four cohorts: first-time, full-time (FTFT); first-time, part-time (FTPT); non-first-time, full-time (NFTFT); and non-first-time, part-time (NFTPT). OM was a more comprehensive indicator than GR, particularly for 2-year institutions, …

Determining The Climatic Effects Of The Central Atlantic Magmatic Province Across The End Triassic Mass Extinction In The Elliot Formation, Southern Africa, Danielle Elizabeth Oberg

Graduate Theses and Dissertations

Understanding the intricate relation between carbon-cycle perturbations, climate change, and biodiversity stability is crucial in the face of ongoing anthropogenic greenhouse-gas emissions. This thesis explores the impacts of rapid climate change induced by carbon-cycle perturbations and their potential repercussions on global climate. Large igneous provinces, particularly the Central Atlantic Magmatic Province, offer a lens through which to examine the nexus of volcanic activity, mass extinctions, and climate change. The emplacement of Central Atlantic Magmatic Province, covering vast regions across continents, emitted substantial amounts of carbon dioxide, profoundly impacting global climate and ecosystems. The end-Triassic Mass Extinction, attributed to Central Atlantic …

Two Studies: Aromatization-Driven Ring Opening Functionalization Of Unstrained Cycloalkanones Through Visible Light Catalysis, And Synthesis Of Amino Endoperoxides Using Self-Doped Titanium Dioxide (Ti3+@Tio2) As A Photocatalyst, Enoch Kudoahor

Graduate Theses and Dissertations

The pharmaceutical industry has been focused on discovering new innovative drugs over the last decade, but the syntheses are either inefficient or the approach to environmental sustainability raises significant concerns. Photochemistry and photocatalysis have found widespread applications in organic synthesis as a result of this pressing issue. Our role as organic chemists is to improve environmental quality by creating a "greener" world through the development of efficient synthetic methods and strategies. Solar energy is now one of the most abundant and renewable natural resources. The emergence of environmental sustainability concerns has led to the development of new techniques for harnessing …

Healthcare Providers’ Screening And Counseling For Tobacco Use Among Youth In The United States: Prevalence, Practices, And Providers’ Perspectives, Adeola Omolade Ayo

Electronic Theses and Dissertations

Youth tobacco use is a public health concern in the United States (U.S.) with about 2.8 million middle and high school youth reporting current tobacco use in 2023. Healthcare providers (HCPs) can play a crucial role in addressing youth tobacco use through screening and counseling, yet rates of these interventions are suboptimal. Tennessee has a high prevalence of youth tobacco use and not much is known about these interventions in Northeast Tennessee. This study has several objectives: 1) conduct a scoping review of available evidence on screening and counseling for youth tobacco use and identify related gaps; 2) assess youth …

Stillbirth Mortality By Robson Ten-Group Classification System: A Cross-Sectional Registry Of 80 663 Births From 16 Hospital In Sub-Saharan Africa, Claudia Hanson, Kristi Annerstedt, Maria Alsina, Muzdalfat Abeid, Hussein Kidanto, Helle Alvesson, Andrea Pembe, Peter Waiswa, Jean-Paul Dossou, Effie Chipeta

Centre of Excellence in Women and Child Health

Objective To assess stillbirth mortality by Robson ten-group classification and the usefulness of this approach for understanding trends.

Design Cross-sectional study.

Setting Prospectively collected perinatal e-registry data from 16 hospitals in Benin, Malawi, Tanzania and Uganda.

Population All women aged 13–49 years who gave birth to a live or stillborn baby weighting >1000 g between July 2021 and December 2022.

Methods We compared stillbirth risk by Robson ten-group classification, and across countries, and calculated proportional contributions to mortality.

Main outcome measures Stillbirth mortality, defined as antepartum and intrapartum stillbirths.

Results We included 80 663 babies born to 78 085 women; …

Analysis Of The Relationship Between Religion, Abortion, And Assisted Reproductive Technology: Insights Into Cross-National Public Opinion, Amy L. Adamczyk, Brittany Suh, Lindsay Lerner

Publications and Research

With advancement in reproductive technologies, public opinion regarding these procedures varies considerably across the world. While prominent public debates have focused on abortion, we know less about the factors shaping feelings regarding Assisted Reproductive Technologies (ART). Both procedures challenge the idea that human life starts with conception – with the fertilization of an embryo. Using European Values Survey data and multilevel modeling, we compare how religion and other personal and country-level factors shape disapproval toward abortion and ART. Conservative Protestants and people who are more engaged with their religion and live in a more religious country are more likely to …

“I Want To Say The Right Thing”: Developing Translingual Literacy Practices Through Early Care Educator And University Researcher Partnerships, Angie Zapata, Mary Adu-Gyamfi, Adrianna González Ybarra

Bilingual and Literacy Studies Faculty Publications

An early care educator (ECE) and university collaborative model of teacher learning offers a distinct departure from common top-down models of professional development. Implementing a Social Design-Based Experiment, ECE and university partners collaborate to explore translingual picturebooks to address curricular inequities in their school settings. Featuring the experience of one white, middle-class ECE (Tamara) in a Midwest rural suburban school, we identify three critical components of this ECE and university researcher collaborative inquiry model: role of ECE as mentors and supporters, picturebooks as tools, and role of university partners as facilitators. Tamara’s experience highlights the critical components of the model, …

Comparing Outcomes Of Mechanical And Manual Cardiopulmonary Resuscitation In Out-Of-Hospital Cardiac Arrest: A Retrospective Cohort Study, Margaret Beyer, Fabirce I. Mowbray, Nicole Wannis, David A. Berger, Christine M. Brent, Robert Dunne, Theresa A. Shields, Matthew T. Ball, Joseph Miller, Howard Klausner

Conference Presentation Abstracts

Background and Objectives: Out-of-hospital cardiac arrest (OHCA) is a leading cause of death in the United States, with over 350,000 per year. Despite improvements in care, OHCA outcomes remain low. Chest compressions can be administered manually or via an automated mechanical device. Mechanical CPR (mCPR) devices are designed to achieve return of spontaneous circulation (ROSC) by delivering consistent compression depth and rate. This retrospective cohort of the Michigan Cardiac Arrest Registry to Enhance Survival (CARES) compared survival to hospital discharge with good neurological status (CPC 1 or 2) between manual and mechanical CPR. Methods: The CDC collaborated with Emory University …

Cardiac Magnetic Resonance Imaging Reduces Radiation Exposure In Emergency Department Patients With Chest Pain, Cedric W. Lefebvre, Anna C. Snavely, Nicklaus P. Ashburn, Nathanael Franks, Robin Rainey Kiehl, Simon A. Mahler, Jason P. Stopyra, Lauren E. Koehler, Brian C. Hiestand, Sujethra Vasu, Michael A. Hall, Alan E. Jones, Carol L. Clark, Jeffrey M. Caterino, Subha V. Raman, Chadwick D. Miller

Conference Presentation Abstracts

Background and Objectives: Patients presenting to the Emergency Department (ED) with chest pain who have an indeterminate (detectable to mildly elevated) troponin are often further evaluated with tests that use ionizing radiation. We hypothesized that patients initially evaluated with stress cardiac magnetic resonance (CMR) imaging receive less ionizing radiation through 1-year of follow-up than those initially evaluated with invasive angiography. Methods: We conducted a secondary analysis of the CMR-IMPACT trial, which randomized adult patients at 4 U.S. sites (9/2013– 7/2018) with a contemporary troponin of 0.006–1.0 ng/mL to either CMR imaging or invasive angiography. Cumulative radiation exposure from coronary computed …

The Rural Medicine Curriculum: The Missing Piece Of Urban Residency Education, Robert Calleja, Bophal Hang

Conference Presentation Abstracts

Intro/Background: Critical Access Hospitals (CAHs) have staffing shortages as most recent graduates of emergency medicine (EM) recidency programs pursue jobs in urban environments. It is presumed that this is due to limited exposure to rural EM scenarios throughout training, leading to hesitancy to practice in these situations as a new graduates with minimal single provider experience. Review of MedEd Portal demonstrates no curriculum filling this deficit in EM training, leading to the development of this curriculum. Purpose/Objective: The goal of the curriculum was to inspire further interest and preparedness to work in rural/critical access hospitals (CAHs). The hope was that …

2024 Summer - Veterans Upward Bound Newsletter, Veterans Upward Bound, East Tennessee State University

Veterans Upward Bound Newsletters

No abstract provided.

The Role Of Microrna-152 In The Pathogenesis Of Diabetic Cardiomyopathy, Joy Olaoluwa Gbadegoye

Alternative Theses and Dissertations (AETDs)

Diabetes mellitus, one of the world’s fast-growing diseases, is characterized by high death rates from cardiac complications named diabetic cardiomyopathy (DCM). DCM is a heart disease that occurs in both type 1 and 2 diabetes mellitus patients. Many management options have been explored in the management of DCM, including ACE inhibitors, beta-blockers, etc.; however, limited success has been recorded from these. MicroRNAs, recently discovered gene regulators, have been reported to be associated with various physiology and pathological processes in the mammalian body. These include cell proliferation, cell death, senesis, carcinogenesis, diabetes, and heart failure, among others. Various miRs have been …

Life On The Edge: The Cambrian Marine Realm And Oxygenation, Sara Pruss, Benjamin C. Gill

Geosciences: Faculty Publications

The beginning of the Phanerozoic saw two biological events that set the stage for all life that was to come: (a) the Cambrian Explosion (the appearance of most marine invertebrate phyla) and (b) the Great Ordovician Biodiversification Event (GOBE), the subsequent substantial accumulation of marine biodiversity. Here, we examine the current state of understanding of marine environments and ecosystems from the late Ediacaran through the Early Ordovician, which spans this biologically important interval. Through a compilation and review of the existing geochemical, mineralogical, sedimentological, and fossil records, we argue that this interval was one of sustained low and variable marine …

Assessing Teachers’ Dispositions Towards Culturally Responsive Pedagogy In Northwest Arkansas High Schools, Rylie Ford

Curriculum and Instruction Undergraduate Honors Theses

Culturally responsive pedagogy (CRP) entails the use of cultural knowledge, prior experiences, and learning styles of ethnically and culturally diverse students to make instruction more relevant and effective for them. Furthermore, practices within this pedagogy are validating, inclusive, emancipatory, and ethical, and help diverse students succeed academically while maintaining their cultural identity. Numerous studies have indicated that using culturally responsive pedagogy increases student academic achievement, sense of self, and emotional well-being (Ladson, 1995; Gay, 2018). Considering the varying degrees of cultural and linguistic diversity in Northwest Arkansas (NWA) schools and the lack of reported professional development relating to CRP, this …

Exploring Mid-Level Teacher Use Of Behavior-Specific Praise And General Praise, Catherine Anderson

Curriculum and Instruction Undergraduate Honors Theses

Behavior-specific praise (BSP) is an evidence-based classroom management practice that can be used to increase desired behavior and decrease undesired behavior. Teachers use general praise (GP) more frequently even though it has proven to be less effective than BSP. This study extends previous research on frequency behavior-specific praise in mid-level classrooms. The expected outcome was that mid-level teacher rates of BSP would be much lower than GP. The proposed research questions include the following: What are middle school teacher’s rates of general praise vs. behavior-specific praise? Do teachers deliver behavior-specific praise more frequently to individual students or groups of students? …

Investigation Of K-2 Teachers' Self-Efficacy In One Rural School District, Crystal Schaefer

Curriculum and Instruction Undergraduate Honors Theses

In the past four years education has undergone many changes, whether it be shifting to distance learning in 2020 or changing student behaviors, and these changes have undeniable effects on teachers and their self-efficacy. The purpose of this study is to investigate teachers’ sense of self-efficacy. A 24-question Qualtrics survey was distributed through email for kindergarten through second grade teachers between two elementary schools in one rural Arkansas school district. These 24 questions were adapted from The Teachers’ Sense of Efficacy Scale. The survey collected 16 total responses. The survey results provided evidence that teacher efficacy in instructional strategies is …

Books As Bridges: Utilizing Multicultural Literature To Foster Connection, Representation, And Inclusivity In Student Education, Elizabeth Vega

Curriculum and Instruction Undergraduate Honors Theses

Background: Linguistic and demographic diversity is growing in classrooms across the United States however teacher demographics remain overwhelmingly composed of monolingual white women. There is great need for a bridge between cultures that honors and empowers diverse experiences. Through personal and professional experiences, I have witnessed the power of crossing cultural bridges through literature. Purpose: This study investigates the role of multicultural literature as a powerful tool to bridge cultural divides, provide authentic representation for marginalized groups, and cultivate a sense of belonging among students from various backgrounds. Methodology: This study reviewed peer-reviewed sources to gather insights into the effectiveness …

School Readiness Social Questions And Generalization To Net Using Aac Devices For Early Childhood Students With Autism, Madison Leighr

Curriculum and Instruction Undergraduate Honors Theses

This study’s purpose was to provide intervention support with communication for participants on the autism spectrum between the ages of four and five years old before entering kindergarten using a handheld speech-generating device (SGD). With a multiple-baseline across-subjects approach, participants gained the skills to communicate their knowledge on kindergarten readiness questions whether verbally or through the assistance of a handheld speech-generating device (SGD) exposed to them during the intervention. This single-subject research study done during my internship taught school-readiness social questions to preschool students with autism with generalization to the natural environment teaching (NET). Using the natural environment teaching method …

Through Undertale To Interactive Storytelling: The Effect Of Game Design On Secondary Students’ Perceptions Of Creative Writing, Terrell Page Jr.

Curriculum and Instruction Undergraduate Honors Theses

Videogames have emerged as a globally influential storytelling medium, as evinced by the success of story-driven games like Undertale, The Legend of Zelda: Breath of the Wild, and The Last of Us II. This medium needs creative writers who can learn to think like game designers. But, recognizing that not all creative writers will pursue a career in game design, this project studied the impact of thinking like a game designer on the way creative writing students approach their craft. Drawing on a variety of videogames and genres, this project focused on the potential of world-building and player choice to …

Investigating Self-Perception Of Speech And Motivation For Return To Intervention For Post Cochlear Implantation In Young Adults, Madison Henry

Electronic Theses and Dissertations

Introduction: Cochlear Implants (CI) are designed to address severe to profound hearing loss. When implantation occurs after language develops, it is referred to as post-lingual (PL) implantation. Currently, no interventions have been identified to address the communication challenges that young adults with PL-CIs may face after they complete post-CI rehabilitation services. This study analyzes if an individualized intervention plan is beneficial for a person with PL-CIs when experiencing changing communication demands in the transition to college or the workforce. Methodology: Baseline assessments were conducted; the results of which allowed for the establishment of four co-constructed goals. These goals were targeted …

How Gender Affirming Care Affects The Current Sex Estimation Standards In Forensic Anthropology: A Preliminary Study, Dakota Taylor

Department of Anthropology: Theses and Student Research

Current sex estimation standards in forensic anthropology are based on individuals whose gender matches their biological/osteological sex, also known as Cisgendered individuals. Recently, transgender individuals have started to become more common in the forensic context due to the increase in hate crimes and violence. This research builds upon past research done on how facial feminization surgery can affect both visual and metric methods, where it was found that forensic anthropologists should rely on the visual methods if they suspect someone to be transgender due to it being more accurate and being able to clearly state the scars left on the …

The Osteobiography Of Human Remains From The Seaview And Indian Town Trail Archaeological Sites, Maggie M. Klemm

Department of Anthropology: Theses and Student Research

Extensive site surveys and excavations on the Island of Barbuda led by Sophia Perdikaris have identified over 62 sites spanning from the Archaic time period to Historic times. Over the last 18 years, these multidisciplinary teams have focused on mapping all sites and performing rescue excavations on sites threatened by sea level rise, erosion or development. Two such sites are the Saladoid site of Seaview (BA016) and the Troumassoid site of Indian Town Trail (BA01). The dunes surrounding the site of Seaview receive the brunt of storms and hurricanes. In 1998 hurricane Georges exposed skeletal material now part of the …