Digital Commons Network^™

Investigating Sound And Gear Modification As A Means Of Reducing Shark Bycatch, Eduardo Josue Rangel

Electronic Theses and Dissertations

Sharks are unintentionally captured during commercial fishing operations and discarded, known as bycatch. Sharks captured in this manner have high mortality rates resulting in hundreds of millions of sharks killed annually. Longline operations have the highest instances of bycatch. In this study, two methods for reducing shark bycatch were investigated. A simple gear modification on longline leaders was tested by substituting monofilament (mono) leaders with ultra-high-molecular-weight polyethylene (spectra) leaders. A recording of thunder was tested during longline fishing for a deterrent effect. The experiments were conducted simultaneously on a 915 m longline with 50 leaders with each leader alternating between …

Repetitively Counting Sheep: Sleep As A Moderator Of Executive Function Performance On Obsessive-Compulsive Symptoms, Brittany S. Sapp

Electronic Theses and Dissertations

As a leading cause of disability worldwide, Obsessive-Compulsive Disorder (OCD) is associated with considerable costs on individual and economic levels. According to a U.S. national comorbidity survey, approximately 28% of individuals experience obsessive-compulsive (OC) symptoms in their lifetime. As with most psychiatric disorders, sleep disturbances are highly prevalent in individuals with OCD and have been linked to greater severity of OC symptoms and poorer treatment response. Similarly, deficient executive functioning (EF) has been demonstrated in OCD, with research evidencing a connection between EF impairment and OCD course, symptom severity, and treatment response. Sleep difficulties are also implicated in impaired EF, …

Preparation And Characterization Of 3d Printed Bioadhesive Delivery Systems, Mohammed Yahya Alyahya

Electronic Theses and Dissertations

Drug delivery systems are evolving as pharmaceutical excipients and the manufacturing technologies evolve. Recently, 3D printing was introduced as a promising and versatile manufacturing technology of solid dosage forms from liquid, semi-solid, and solid intermediates. This work presents two examples of employing hot melt extrusion and fused deposition 3D printing technology to fabricate bioadhesive delivery systems loaded with miconazole. The first project shows a successful fabrication of four intraoral mucoadhesive film formulations, the formulations consist of different ratios of Eudragit RS, Hydroxypropyl cellulose EF (HPC EF), and Hypromellose HME 15LV. After the HME and 3DP fabrication of the films, the …

A Clear View Of The Mountain, Sarah Helen Huddleston

Electronic Theses and Dissertations

A collection of original short stories.

Exploratory Analysis Of Effects Of Data On Adversarial Perturbations, Hamza Ali Zafar

Electronic Theses and Dissertations

In recent years, the amount of data being produced has increased tremendously. This data has allowed us to create and train machine learning models that are being used nowadays. Though these models have proven to be very effective in classification and regression problems, they do have a vulnerability. This vulnerability is exploited by adding adversarial perturbations to the original data or in the deployed model. These adversarial attacks are done by making minute changes to the data to confuse the machine learning model. This can lead to models’ misrepresentation and drop the accuracy. For the span of this paper, I …

Optimizing Exposure For Contamination Ocd: What Happens When Digust Is Specifically Targeted?, Molly E. Wickenhauser

Electronic Theses and Dissertations

Disgust is a basic emotion with distinct subjective, physiological, cognitive, and behavioral processes that include revulsion, parasympathetic nervous system activity, contamination-specific appraisals, and disease-avoidance behaviors. Pathological disgust responses may contribute to the development and maintenance of anxiety-related psychopathology, particularly spider and blood-injection-injury phobias, health anxiety, post-traumatic stress disorder, and obsessive-compulsive disorder (OCD). Evidence-based treatments for these disorders were developed based on theories of fear and anxiety and involve exposure-based cognitive-behavior therapy. However, traditional exposure methods appear to be less effective at achieving habituation to disgust compared to fear and anxiety. Additionally, individuals with elevated disgust and primary contagion concerns seem …

Post-Newtonian Dynamics Of Eccentric, Spinning Binary Black Holes And The Associated Gravitational Waveforms, Sashwat Tanay

Electronic Theses and Dissertations

In 2015, the gravitational wave (GW) era of astronomy began. The binary black hole (BBH) system being the primary source of GWs, are at the center stage of GW astronomy. The matched-filtering method of detection of GWs requires accurate modeling of the BBH system and the associated GWs. With the increasing sensitivity of the GW detectors, we need to push our GW models to even higher accuracy in the future. There is also a need to make these models as fast as possible to implement so as to allow for hundreds of detections in a year. This is where the …

Phenomenological Study Of Positive Coteaching Dyads Perceptions Of Their Coteaching Relationship, Ashley Weber

Electronic Theses and Dissertations

The purpose of this phenomenological study was to understand how coteaching dyads perceive their coteaching relationships including how they implemented coteaching and how their school leaders supported them. Participants in this study were located in one county school system in East Tennessee. Data was collected through an online survey distributed to 40 teachers, of whom 28 responded. Then data was collected through in person one-on-one interviews. Coteachers who participated in the interview process all rated themselves high on the Coteaching Rating Scale. The overarching research question was What makes coteaching relationships effective? Three research questions were analyzed. From the data, …

False Idol: The Memory Of Andrew Johnson And Reconstruction In Greeneville, Tennessee 1869-2022, Zachary A. Miller

Electronic Theses and Dissertations

The memory of Andrew Johnson in Greeneville has progressed through three phases. The first phase began during Johnson’s post-presidential career when he sought national office to demonstrate his vindication. After Johnson died the first phase continued through the efforts of his daughters and local Unionists who sought to strengthen the myth of monolithic Unionism and use Johnson to promote reconciliation and to shield the region from federal intervention in the racial hierarchy. The second phase in the construction of Johnson’s memory began in 1908 when Northerners began to unite with white Southerners in white supremacy. East Tennesseans then celebrated the …

Evaluating Bat Roost Abundance: A Comparison Of Drone-Acquired Thermal Imagery And Acoustic Estimates With Visual Observations, Karah Jaffe

Electronic Theses and Dissertations

Roosts provide an opportunity to census philopatric populations of bats. Comparing the efficacy of traditional methods with novel methods can provide guidance on the use of new technologies in the field. This project aims to compare the count efficacy of external emergence methodologies, i.e., drone-acquired thermal imagery, acoustic estimates, and visual counts. Surveys were conducted ten nights at two emergence sites and synchronized to compare counts. Acoustic estimates could not be established as there was a weak prediction of the linear relationship between root-mean-square pressure and emergence count; therefore, this method was removed from the comparative analysis. A linear mixed-effects …

Adaptation Of Instructional Strategies And Practices During A Pandemic, Lacy E. York Hughes

Electronic Theses and Dissertations

The purpose of this study was to explore the stories of identified, effective middle school teachers as they experienced changes in instructional strategies and practices as a result of an identified crisis, COVID-19. Although there has been little documentation in the literature specifically regarding adapting instructional strategies and practices as a result of crises, crisis management, change theory, mindset theory, adaptation, and teacher effectiveness characteristics became the framework through which to interpret the data.

Data collection strategies included one-on-one, semi-structured interviews with a total of eight participants, two principals and six teachers, who met specific research participation criteria. Analysis of …

Validation Of The 40 Hz Auditory Steady State Response As A Pharmacodynamic Biomarker Of Evoked Neural Synchrony, Muhammad Ummear Raza

Electronic Theses and Dissertations

Schizophrenia is a troubling and severe mental illness that is only incompletely treated by currently available drugs. New drug development is hindered by a scarcity of functionally relevant pharmacodynamic biomarkers that are translatable across preclinical and human subjects. Although psychosis is a major feature of schizophrenia, cognitive and negative symptoms determine the long-term functional outcomes for patients. Stimulus-evoked neural synchrony at gamma (~ 40 Hz) frequency plays an important role in the processing and integration of sensory information. Not surprisingly, schizophrenia patients show deficits in gamma oscillations. NMDA receptor (NMDAR) activation on fast-spiking parvalbumin-positive interneurons is deemed important for the …

Adverse Childhood Experiences And Quality Of Life: A Mediating Role Of Physical Activity And Executive Function, Loni Parrish

Electronic Theses and Dissertations

ACEs have been associated with heightened risk for a range of chronic health problems, substance use, and cognition in adulthood (Center for Disease Control (CDC), 2019; Hinojosa et al., 2017). One potential protective factor is physical activity (McEwen, 2016; Wu et al., 2013). Physical activity is associated with sustaining overall health, improving mental health by reducing symptoms of depression and anxiety (Murri et al., 2019; Sharma et al., 2006; Tasci et al., 2019), and maintaining a healthy body weight and BMI (WHO, 2021). Therefore, this study examined whether barriers to physical activity, physical activity levels, and executive outcomes serve as …

An Intersectional Study Of Perceived Academic Climate And The Imposter Phenomenon In Psychology Students, Kelsey Braun

Electronic Theses and Dissertations

Social exclusion in higher education can occur at multiple levels (e.g., systemic, institutional, interpersonal, individual), and individuals simultaneously hold multiple social identities that could influence their perceptions of academic climate. The current study utilized a mixed-methods convergent parallel design to explore the impact of multiple social identities, perceptions of academic climate, and the imposter phenomenon among psychology students. In the quantitative portion, participants (N = 142) completed an online survey related to gender centrality, academic climate, and imposter phenomenon. Gender group comparisons revealed that cisgender men indicated poorer perceptions of climate than cisgender women and gender minorities, but imposter …

Police Officer Perception Of Body Cameras In East Tennessee, Sadie Murr

Electronic Theses and Dissertations

The purpose of this study was to explore police officer perception of body cameras. There had been little previous research done on the police officer perception of body cameras in rural areas. Several research questions were pursued, including the impact of body cameras on citizens, the impact of body cameras on police officers, use of force and body cameras, body cameras effects on calls, and the officers’ support of body cameras. The study gathered data through qualitative interviews with 16 police officers in East Tennessee to address these questions. Results obtained provided interesting and useful information regarding the police perception …

The Paleoecology Of High-Elevation Bison In The Greater Yellowstone Ecosystem And Implications For Modern Bison Conservation, Darian Bouvier

Electronic Theses and Dissertations

The national mammal of the United States, the American Bison (Bison bison) was once nearly extinct. Populations have recovered to the degree that thousands roam the Great Plains today. Due to their large numbers and body size, this species has an oversized impact on the ecological communities where it lives and is considered a keystone herbivore in modern North American grasslands. This study explores the detailed, seasonally resolved, paleoecology of seven bison from the Greater Yellowstone Ecosystem during the Late Holocene through stable isotope analyses and species niche modeling. Isotopic analyses of δ¹³C, δ¹⁵N, …

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 …

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 …

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. …

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 …

A Phenomenological Study On How University Employees Experienced Working From Home During A Pandemic, Amy Hill

Electronic Theses and Dissertations

The purpose of this qualitative study was to explore how employees at a mid-sized public university in the South experienced working from home during the coronavirus pandemic of 2020-2021. Most employees in higher education settings were affected in some way by the coronavirus pandemic that hit the United States in the spring of 2020. Administrative, and clerical and support staff had to determine how to continue to provide the university with services while coordinating working from home. Now that we have experienced working from home, will that experience change the future of how staff work in higher education? For many, …

An Examination Of The Working Relationships Between General Education Teachers, Special Education Teachers, And Paraprofessionals In General Education Settings, Rita Page Hosay

Electronic Theses and Dissertations

The purpose of this study was to provide an examination of the relationships between general education teachers, special education teachers, and paraprofessionals and the influences of these relationships on students with disabilities. This study was conducted through the process of semi-structured interviews with general education teachers, special education teachers, and paraprofessionals working in two Tennessee school districts. The researcher found that communication practices, training, perspectives, time, role expectations, development of partnerships, and the creation of supportive environments affect the development of working relationships among special education teachers, paraprofessionals, and general education teachers. The researcher found that these relationships influence the …

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 …

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 …

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 …

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 …