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Cyclic Di-Gmp Regulates Motility, Biofilm Formation, And Desiccation Tolerance In Acinetobacter Baumannii, Garrett Reynolds

Electronic Theses and Dissertations

Acinetobacter baumannii is an increasingly multidrug-resistant pathogen contributing to hospital-acquired infections necessitating the discovery of novel treatments. A bacterial second messenger, cyclic diguanosine monophosphate (cyclic di-GMP), can regulate various persistence factors that are potentially advantageous for survival in hospital environments. Cyclic di-GMP–modulating enzymes and cyclic di-GMP–binding effectors predictively are encoded in the Acinetobacter baumannii genome. I hypothesized that cyclic di-GMP controls motility, biofilm formation, and desiccation tolerance in Acinetobacter baumannii. Disrupting cyclic di-GMP–modulating enzymes or cyclic di-GMP–binding effectors should alter the regulatory effectiveness of these phenotypes. I tested the multidrug-resistant isolate Acinetobacter baumannii strain AB5075 and identified several transposon …

The Role Of Middle And High School Principals During The Covid-19 Pandemic: A Phenomenological Study, Dustin Ford

Electronic Theses and Dissertations

The purpose of this qualitative study was to examine middle and high school principal roles prior to and during the COVID-19 pandemic to gain a better understanding about how leadership responsibilities adapted or changed. Data collection strategies included one-on-one interviews with nine middle and high school principals in East Tennessee. To qualify for the study participants had to have experience in the principalship prior to the pandemic. The analysis of data was based on the theoretical frameworks of adaptive leadership (Heifetz et al., 2009) and change theory (Fullan, 2020). The results revealed five key themes that were consistent during the …

An Evaluation Of Castor Californicus And Implications For The Evolution And Distribution Of The Genus Castor (Rodentia: Castoridae) In North America, Kelly Lubbers

Electronic Theses and Dissertations

The genus Castor is represented in Eurasia by Castor fiber, North America by C. canadensis, and has been in North America since the late Miocene. This study aims to assess whether morphology of Miocene-Pliocene C. californicus and extant C. canadensis are distinctly different. Specimens of Castor were compared using geometric morphometrics on cranial material and linear measurements of postcranial material. Species occurrence data were compared with past and future climate data to assess Castor distribution in North America through time. Results show that C. canadensis is highly variable in both cranial and postcranial morphology and C. californicus falls …

Teachers’ Perceptions On The Effects Of Covid-19 On Juniors And Seniors In High School, Martha J. Meredith

Electronic Theses and Dissertations

The purpose of this study was to examine the academic, social, and emotional effects of COVID-19 on 11th- and 12th-grade students. There has been little documentation regarding the specific change that the pandemic has had on these students; it is imperative that we look at the effects of COVID-19 on the students who experienced COVID-19 pandemic.

Data collection was completed through individual interviews. Analysis of data occurred in three phases: (a) categorization of data under the four organizational factors, (b) building the explanation in a phenological form, and (c) re-examination of the data. The analysis of the narrative study was …

Student Achievement And Teacher Perceptions Of School Climate In Title 1 And Non-Title 1 Schools, Jennifer E. Pangle

Electronic Theses and Dissertations

The purpose of this quantitative study was to determine if there is a significant relationship between student achievement and teacher perceptions of school climate. An additional purpose of this study was to determine if there is a significant difference in teacher perceptions between Title 1 and non-Title 1 schools. The final purpose of this study was to determine if there is a significant difference in teacher perceptions of school climate among the schools according to overall student achievement. A series of Spearman’s Correlation analyses were used to analyze data to determine if there was a significant relationship between TVAAS composite …

Consequences Of Caring: The Manifestation Of Compassion Fatigue In High School Teachers During The Covid-19 Pandemic, Randi Staggs

Electronic Theses and Dissertations

The purpose of this research study was to explore the symptoms of compassion fatigue as experienced by teachers in grades 9-12 during the COVID-19 pandemic. While the research on the effects of compassion fatigue on educators is relatively sparse, the literature regarding compassion fatigue, secondary traumatic stress, and vicarious trauma in other helping professions revealed a 12-symptom framework.

Data collection strategies included individual virtual interviews and field notes. Analysis of data occurred in four phases: (a) analyzing transcripts and identifying themes, (b) categorization of data under the 12 symptoms of compassion fatigue, (c) building the explanation in narrative form, and …

An Investigation Of The Relationship Between Teachers’ Personal Epistemologies And Their Self-Efficacy About Culturally Responsive Classroom Management, Tahani Ahmed

Electronic Theses and Dissertations

Diversity is now an essential matter in US public schools. For the first time in America's history, students of color will constitute a majority of the public school enrollment; on the other hand, most early childhood and elementary teachers remain monolingual, white, middle-class females (Hussar & Bailey, 2019). The demographic mismatch between students and teachers presents a critical concern for teacher preparation programs (Banks et al., 2005; Gay, 2018; Muñiz, 2019). Therefore, this study proposed that understanding the relationship between pre-service teachers' epistemological beliefs and their culturally responsive classroom management self-efficacy illustrated factors that may improve their teaching concept toward …

Dibutyl Amine Detection, Quantification, And Removal With Iron(Ii)Tetrasulfophthalocyanine (Fetspc), Kyle Bittner

Electronic Theses and Dissertations

Pesticide testing is of practical interest in various areas of today’s world due to their prevalence and toxicity. These areas include agriculture, environmental, chemical plants, and many others. Herbicides, like Roundup, contain secondary amines such as glyphosate. The ability to detect secondary amines could offer a method for glyphosate detection in agricultural and environmental samples. Secondary amines can interact with metal complexes through electron charge transfer. Such interactions can cause a change in the metal’s electron configuration and energy state and can be seen in the UV-Vis spectrum. Metal phthalocyanines (MPc’s) and other organometallic complexes have been of interest for …

Cognitive Preference And Skill Acquisition: The Relationship Between Student Nurse Anesthetists And Certified Registered Nurse Anesthetists Thinking Styles, Thomas Diller

Electronic Theses and Dissertations

Decision-making in healthcare is a complex and, at times, uncertain process. In the United States Certified Registered Nurse Anesthetists (CRNA) administer the majority of anesthesia. Nurse Anesthetists must draw on their educational background, clinical experience, and cognitive processes to make sound clinical judgments. To avoid errors understanding the relationship between cognitive preference and skill acquisition is critical. This study was designed to describe the cognitive preferences of Student Nurse Anesthetists (SRNAs) and CRNAs in the United States. The 2 cognitive preferences explored are rational (analytical) and experiential (intuitive) decision-making.

The researcher used a quantitative, cross-sectional, descriptive correlational design. The researcher …

Investigating Force-Velocity Profile Alterations And Methodology After Traditional Resistance Training, Joseph D'Amato

Electronic Theses and Dissertations

The purposes of this dissertation were to examine the agreement the agreement between double integration using the trapezoidal method and measurements for push-off distance to create force-velocity profiles, examine the change in push-off distance between loading conditions when force-velocity profiling, and to observe the alterations in mechanical outputs of force-velocity profiles after 15-weeks of off-season training. The major findings are as followed. Using double integration with the trapezoidal method may be a reliable way to estimate push-off distance, despite a small systematic bias. This bias should have negligible effects on push-off distance and therefore not alter or effect calculations in …

Female Motivation In Engineering, Manufacturing, And Stem-Related Trades, Leaann Nichole Manz, Leaann Nichole Manz-Young, Leaann Nichole Young

Electronic Theses and Dissertations

Historically, female representation in engineering and manufacturing trades has been underrepresented compared to their male counterparts. Given this trend, the scope of this paper is to analyze the motivational factors among females who are currently working in Engineering and Manufacturing related trades in the surrounding lower East Appalachian area. Literature research will support an analysis of the following focus: Females in Engineering and Manufacturing Trades. The study focuses on analyzing questionaries from thirty-two females based on the Social Cognitive Career Theory and its three components: “outcome expectations, career interest, and career self-efficacy”. The major findings of this study …

Flora Of Doe Mountain Recreation Area, Johnson County, Tennessee, Benjamin Mccullough

Electronic Theses and Dissertations

A botanical inventory of Doe Mountain Recreation Area (DMRA) in northeastern Tennessee was conducted to help guide conservation-based management. A total of 484 species were found in DMRA, comprising 94 families, and 285 genera, 10 species listed in the state rare plant list, and 76 exotic species. Two species, Liatris virgata and Lycopodiella inundata, were new state records. Water in the Lycopodiella seep was an order of magnitude more acid than at other sites. An analysis of the wildland-urban interface showed that only 13% of the area was classified as uninhabited. The inventory-invasion index, introduced to quantify the relative …

Adverse Childhood Experiences And Trauma-Informed Schools: Restorative Practices For Social And Emotional Issues In Education, Heather Easterling

Electronic Theses and Dissertations

Abstract

Adverse Childhood Experiences and Trauma-Informed Schools: Restorative Practices for Social and Emotional Behavior Issues in Education

by

Heather Easterling

The purpose of this study was to determine whether factors in school climate and culture and the educator's role in evaluating adverse childhood experiences (ACEs), trauma-informed situations, and disruptive classroom behaviors, enable a school to generate interventions needed to help students succeed. This qualitative study evaluated the ACEs and the relationships traumatic incidents had on disruptive classroom behaviors that teachers experienced with students. Although there is emerging research regarding ACEs and trauma-informed schools, there are multiple factors that facilitate the …

Individual Characteristics Of Postsecondary Underachievement, Natasha Godkin

Electronic Theses and Dissertations

Underachievement in postsecondary education has been a growing concern for educators and researchers. Higher education institutions have implemented early alert systems to identify students performing below standards. This early warning system has major limitations that confine it to an identification only approach. The current study aimed to investigate the psychometric properties of the Student Attitude Assessment Survey-R (SAAS-R) in a postsecondary sample. First, a confirmatory factor analysis validated the SAAS-R in a postsecondary sample. Predictive validity was then investigated by identifying students as underachieving or achieving based on responses to the SAAS-R and via a regression-based discrepancy model (ability vs. …

A Phenomenological Study Of Contributing Factors And Common Trends Related To Teacher Attrition In Western North Carolina, Preston Clarke

Electronic Theses and Dissertations

A phenomenological approach was used to identify contributing factors and common trends related teacher attrition by conducting interviews with teachers who decided to exit a North Carolina School District located in Western North Carolina. A qualitative approach allowed the researcher to gain valuable insight into the decision-making process of the 15 research participants. Data collection involved conducting one on one telephone interviews with participants by asking a series of open-ended questions that allowed for probing and follow-up questions. Analysis of researcher notes, evaluation of textual data produced by interviews, and observations allowed the qualitative investigator to identify emerging themes and …

When The Costs Outweigh The Benefits: Examining Variations In Nulliparous, Term, Singleton, Vertex And Elective Cesarean Delivery Rates Across The United States, 2016-2020, Kathleen Tatro

Electronic Theses and Dissertations

The overutilization of cesarean deliveries is a major public health issue in the United States (U.S.). The rates of cesarean deliveries have increased substantially from the mid 1990s. Low-risk, defined as nulliparous, term, singleton, vertex (NTSV) pregnancies with no medical indication of need, and elective cesarean deliveries have been implicated as drivers of these increases. Elective cesarean deliveries are NTSV cesarean deliveries in which no trial of labor was attempted. There is a lack of clear rationale as to the noted increases in cesarean delivery rates as the evidence shows that these procedures provide no additional health benefits to mothers …

Perceptions Of Tenured Science Faculty Regarding The Provision Of Reasonable Accommodations For Students With Disabilities, Rebecca J. Riggs

Electronic Theses and Dissertations

This phenomenological study used qualitative research methods to explore the perceptions of tenured science faculty regarding the provision of reasonable accommodations for students with disabilities. Thirteen tenured science faculty at postsecondary institutions throughout the United States participated in one-on-one interviews. The participants provided their perceptions and experiences regarding the provision of academic accommodations for students with disabilities in a laboratory science. In these interviews key themes emerged, such as the importance of providing reasonable accommodations for successful academic outcomes for students with disabilities, the perception that providing reasonable accommodations to students with disabilities is fair, the concern that providing reasonable …

Reduced Fuel Emissions Through Connected Vehicles And Truck Platooning, Paul D. Brummitt

Electronic Theses and Dissertations

Vehicle-to-infrastructure (V2I) and vehicle-to-vehicle (V2V) communication enable the sharing, in real time, of vehicular locations and speeds with other vehicles, traffic signals, and traffic control centers. This shared information can help traffic to better traverse intersections, road segments, and congested neighborhoods, thereby reducing travel times, increasing driver safety, generating data for traffic planning, and reducing vehicular pollution. This study, which focuses on vehicular pollution, used an analysis of data from NREL, BTS, and the EPA to determine that the widespread use of V2V-based truck platooning—the convoying of trucks in close proximity to one another so as to reduce air drag …

Leading Through Music: A Comparative Case Study On The Effects Of Military Band Performance, Jessica A. Williams

Electronic Theses and Dissertations

This study explored the emotional impacts of military band performance, as well as the result of military band support loss on individuals in surrounding communities. The primary objectives of this qualitative comparative case study were to discover the value of military bands perceived by audiences and musicians. A critical, qualitative examination was implemented to assess how the atmospheres created by military bands influence their audiences and how communities react to reduced opportunities to interact with military band members. Community members of the 329D and TRADOC Army Bands were surveyed and interviewed in this study to compare the morale and sense …

Call Center Retention: A Correlational Study Of Work Attitudes And Satisfaction Of Training And Development For Customer Service Agents, Jacquelyn Holmes Birocci

Electronic Theses and Dissertations

The focus of this study was the theoretical model of work attitudes that customer service representatives have about their jobs, the level of satisfaction they have with training and development, and the relationship of work attitudes and satisfaction with employee retention within U.S.-based software as a service inbound call centers. The purpose of this quantitative correlational research was to investigate if and to what extent work attitudes and satisfaction of training and development had a relationship with employee retention within U.S.-based inbound call centers. A quantitative methodology was used to explore if work attitudes and satisfaction of training and development …

Treating Active-Duty Military Members: Best Practices For Common Mental Health Diagnoses Across The Dod, Leah Lawson

Electronic Theses and Dissertations

Due to varying service experiences, active-duty service members endure military related stressors in addition to everyday life stressors. As a result, their risk of mental illness onset increases. Considering that many of the stressors and events are unique to military personnel, it is important to identify best-practice interventions for working with this population opposed to employing civilian best practices. The purpose of this study was to determine what treatment interventions are best-practice when working with active-duty military members diagnosed with the three most common mental disorders (e.g., adjustment disorder, depressive disorders, anxiety disorders) across the Department of Defense (DoD). This …

The Effectiveness Of A Career And Technical Education Program Of Study On Preparing Students For Their Chosen Career, Rigoberto Vasquez

Electronic Theses and Dissertations

Attending a 4-year university is not a goal for all high school students. Some students, as early as their first year in high school, have chosen another direction by enrolling in a career and technical education (CTE) program of study (POS). The purpose of the study was to conduct a qualitative case study documenting the outcomes of past graduates of a CTE POS located on a public comprehensive high school campus in California. The participation of former graduates to share their insight and experience from being high school age students to working adults provided the real-life ramifications of the effectiveness …

Personal Narratives Of English Language Learners With Learning Disabilities: Paving The Way To Success At A Private University In Central Texas, Oralia Guzman-Wheeler

Electronic Theses and Dissertations

© Copyright by Oralia Guzmán-Wheeler (2022) All Rights Reserved iv Abstract More than half of English language learners with learning disabilities who enroll in college to obtain an undergraduate degree drop out. This narrative study’s purpose was to examine the ways English language learners with disabilities navigate the system of higher education and overcome challenges along the path toward college graduation. The participants in this qualitative interview study included six undergraduate students attending a 4-year college in central Texas. The narrative design involved participants sharing their lived stories and experiences in semistructured interviews. The data analysis revealed the following four …

A Study Of The Perceptions Of New North Texas Assistant Principals On Administrative Preparation Programs, Larry D. Croy

Electronic Theses and Dissertations

The purpose of this qualitative descriptive study was to examine the perceptions of new K-12 assistant principals in suburban North Texas school districts related to their level of preparation upon obtaining their first assistant principal positions. A purposive sample of 16 new assistant principals participated in semistructured interviews and a focus group. The interviews and the focus group conversation were recorded and transcribed. In vivo coding and structural coding were used to analyze the data. The findings of the study confirmed that the participants of the study overwhelmingly believed that their principal preparation programs did not adequately prepare them for …

Exploring The Motivations Of College Students With Adhd To Disclose Their Disability And Use Accommodations, Carol M. Haynes-Buchanan

Electronic Theses and Dissertations

College enrollment numbers reflect that the admission rates of students with disabilities are increasing as time progresses (Newman et al., 2020). Despite this spike in college attendance, degree completion rates of students with disabilities (SWD) are significantly lower than their nondisabled peers (DuPaul et al., 2018). This disparity was addressed via laws and regulations geared towards higher education institutions to level the playing field for SWD through providing services and support. This study aimed to explore what motivates SWD to disclose their disability and to accept or decline accommodations in the university setting. Students and faculty at a Texas private …

Addressing Stress In Graduate Nurse Practitioner Nursing Students, Shandria K. Sawyer

Electronic Theses and Dissertations

This project was developed to address the issue of high stress levels among graduate nursing students, which is a common phenomenon that increases the risks of mental health disorders, professional burnout, and poor-quality patient care among students and professional nurses after earning their degrees. This project sought to utilize a simple educational intervention delivered online to impart coping skills to graduate nursing students to assist them in reducing their stress levels. The intervention was a brief, single-session, self-guided educational module featuring informational and participative elements related to stress causes, the impacts of stress, and stress reduction techniques. In total, 11 …

The Effects Of Mindful Meditation On Body Image In Female Collegiate Athletes During The Late Luteal And Early Follicular Phases Of The Menstrual Cycle, Katherine Jankevicius

Electronic Theses and Dissertations

Body image has been studied in previous research but there is a gap in research with the consideration of body image changes during the phases of the menstrual cycle. The purpose of this study was to examine the effects of a mindful meditation intervention on body image during the late luteal and early follicular phases of the menstrual cycle in collegiate female athletes. Eight female collegiate athletes (age: 20.5 ± 1.8 years, height: 1.7 ± 0.1 m, weight: 62.4 ± 8.9 kg, body fat: 26.4 ± 6.9%) participated in both the control and mindful meditation intervention with each taking three …

Soil Quality Indicators And Vegetation Responses Following Ecological Restoration Thinning Of Ponderosa Pine On Three Soil Parent Material Types Under Grazing And Non-Grazing In Northern Arizona, Christopher Macdonald

Electronic Theses and Dissertations

This research was performed in a northern Arizona ponderosa pine (Pinus ponderosa P. & C., Lawson) forest. The objectives were to a) increase understanding of long-term vegetation responses to ecological restoration treatments on three soils types, with and without grazing, b) evaluate the responses soil physical, chemical, and biological properties to restoration treatments, with and without grazing, c) determine the utility of measured soil quality indicators to informing risks to sustainable soils management in southwestern ponderosa pine forests.

There were no significant differences in soil bulk density by soil type, treatment type, or grazing treatment. No significant differences …

Differences Between African American And White Males In Grades 6-8: Comparative Evidence From Selected Texas Rural Schools, Sheenah Maria Hopkins-Johnson

Electronic Theses and Dissertations

The academic achievement gap among Black males in grades 6-8 across Texas is a growing concern. Based on the State of Texas Assessments of Academic Readiness (STAAR), secondary data from the Texas Education Agency (TEA) was used to evaluate scores from a sample of Texas rural schools. In this quantitative, non-experimental methods study, the dependent variable examined was the STAAR reading score at the “meets grade level,” and the independent dichotomous variables examined were: race, whether or not the student was classified in one of the following groups: ECD, at-risk, and special education. Academic trends from the 2017-2019 academic school …

Schooling Black Males: Hegemonic Discourses, Structural Barriers, And Strategic Resistance, Cleo Wadley

Electronic Theses and Dissertations

Black males have scored at the lowest levels of academic achievement compared to other racial groups in many Texas school districts. The achievement gap for this population of students has been explained by both material constraints and oppressive hegemonic discourses. The purpose of this qualitative research study was to understand how such barriers and discourses affected these students and how the students negotiated their experiences in school. This study was designed to describe the problem, its background and to discuss a relevant theoretical framework. This study examined the academic achievement data for Black males and the current literature on adverse …