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International Social Work Field Education, Shelli Gregory

DSW Capstone Projects

International Social Work Field Education (ISWFE) involves a set of unique challenges. For the literature review of this capstone project 20 peer-reviewed journal articles written between the years 2009 and 2018 were reviewed to answer the following research question: What are the unique challenges associated with ISWFE and the best practices for combatting these challenges? The challenges most frequently mentioned in the literature are the perpetuation of colonial mindset; students experiencing emotional vulnerabilities, stress, & distress (guilt, shame, loneliness, fear, helplessness, isolation, and homesickness); supervisory issues; language barriers; funding; culture shock, disequilibrium, or clash; safety concerns; administrative problems such as …

Surface Modification Of Carbon-Based Electrodes For Electrochemical Conversion Processes: Oxygen Reduction Reaction And Bicarbonate Conversion, Udari Shyamika Kodithuwakku Arachchige

Theses and Dissertations--Chemistry

Oxygen reduction reaction (ORR) and conversion of bicarbonate into value-added chemicals are two significant electrochemical processes for energy storage and conversion. ORR is an important electrochemical reaction in fuel cells and metal-air batteries that provide power conversion and storage capacity, respectively, for portable electronics, and electric vehicles. However, the performance of catalysts (e.g., platinum-based) is critically limited by slow kinetics, inefficient four-electron pathway, and surface deactivation. This limited performance of platinum-based catalysts, the scarcity of platinum, and vulnerable supply chains for critical minerals require the development of alternative electrocatalysts now more than ever. Carbon-based materials possess several key properties that …

First Principles Calculations To Investigate Surface And Catalytic Properties Of Materials For Green Energy Generation, Keerthan Raghavendra Rao

Theses and Dissertations--Chemistry

Climate change due to greenhouse gas build up in the earth’s atmosphere is an existential threat to humanity. To mitigate climate change, a significant shift from fossil fuels is necessary. Over the years, several renewable energy sources like solar, wind, geothermal etc. have been explored with the aim providing carbon-free energy. In this work, we focus on using density functional theory (DFT) methods to investigate key functional properties of materials of interest for applications in solar cells and catalytic conversion for energy generation. We show geometric effects of carboxylic acid binding on a transition metal surface to impact the deoxygenation …

Computational Studies On Molecular Mechanisms For Dysregulation Of Monoamine Transporters By Hiv-1 Tat And Drug Discovery Of Novel Phosphodiesterase-2 Inhibitors, Charles A. Adeniran

Theses and Dissertations--Chemistry

Computational chemistry methods have been greatly used and has great potential in drug discovery and understanding the detailed molecular mechanism of biological processes. Scientific questions can initially be addressed using computational modeling and simulation studies. The common feature in this work is to understand intermolecular interactions related to protein targets in the brain, as it relates to HIV infection and Alzheimer’s Disease. HIV is among the world’s most deadly infectious diseases. Recent therapeutic advancements have begun to increase the life expectancy of people living with this virus. The mechanisms that lead to neurobiological complications known as HIV- associated neurocognitive disorders …

Treatment Of Borderline Personality Disorder: Re-Envisioned To Mitigate Stigma And Enhance Treatment Effectiveness, Abigail Lorraine Steinkamp

DSW Capstone Projects

Borderline personality disorder (BPD) and the characteristics that define it are often viewed negatively by therapists and other mental health providers. Terms to describe these clients commonly include “manipulative”, “attention-seeking”, and “always in crisis.” Because of this jargon, there is a deep-set stigma that surrounds the disorder. Therapists and treating clinicians base their decisions and treatment protocol on hearsay of the disorder and already have an image of their prospective BPD client before the client enters their office. This capstone project seeks to inform clinicians about the present stigma and provides tools that are proposed to reduce stigmatizing beliefs within …

Leadership Strategies For New Supervisors On Leading A Diverse Workforce, Christie L. Watson

DSW Capstone Projects

The title leader, supervisor, or manager, alone does not describe the qualities it takes to develop a workforce that is engaged, empowered, inclusive, diverse, and psychologically safe. To retain employees, one must understand these qualities and learn how to put them into action. It is said that people spend more time at work than they do at home. According to a study completed by Andrew Naber (2021) at Gettysburg College says, on average, people spend one-third of their life at work (p. 1). Having a poor experience in the workplace leads to turnover, decreased productivity, disengaged employees, and poor customer …

Effects Of Social Isolation And Adolescent Ethanol Exposure On Adult Drinking And Nicotine Co-Use, Jakob Shaykin

Theses and Dissertations--Psychology

Alcohol use often begins in adolescence and can lead to increased susceptibility to AUD in adulthood. Stress in the form of social isolation during adolescence can also prompt substance use disorders later in adulthood. This thesis determined if exposure to ethanol (EtOH) during adolescence and social isolation alters the trajectory of alcohol and nicotine intake during adulthood. In Experiment 1, adolescent male and female Sprague-Dawley rats were administered intermittent injections of EtOH (2g/kg 20% EtOH, IP) or saline (PND 28-41). EtOH consumption was measured in adulthood (PND 49-55) using a 2-bottle choice procedure where one bottle contained a 0.2% saccharin/15% …

Prenatal Ethanol Exposure Impairs Performance On Spatial And Tactile Sequential Discrimination Task In Juvenile Rats, Caleb S. Bailey

Theses and Dissertations--Psychology

Fetal alcohol spectrum disorders (FASDs) are a set of cognitive and behavioral abnormalities that arise in ~5% of children who have been prenatally-exposed to alcohol. Prenatal alcohol exposure (PAE) can cause impairments in learning acquisition, working memory, response inhibition, and attentional-set shifting that result in exaggerated deficits in executive function and impairments in goal-seeking behavior. There are standard procedures used in rodent research to address some components of these deficits, but few procedures are sensitive enough to comprehensively assess such deficits. To address this issue in FASDs research techniques, we developed a procedure that requires prolonged executive function in a …

Effect Of Menstrual Cycle Phase On The Rewarding Properties Of Alcohol In Women, Annie K. Griffith

Theses and Dissertations--Psychology

Compared with men, women are disproportionately affected by alcohol, including greater risks of behavioral impairment and relapse. One likely mechanism underlying this disparity is fluctuations of ovarian hormones, particularly estradiol (E2), across phases of the menstrual cycle. Pre-clinical and clinical studies have shown that higher E2 levels correlate with heavier patterns of alcohol consumption, suggesting E2 may modulate drinking. This relationship is thought to be mediated by the rewarding properties of alcohol. The present thesis tested the hypothesis that elevated E2 during the late follicular phase would increase the rewarding properties of alcohol. Fifty young-adult women participated in a within-subjects …

Birds Of A Feather: Exploring Social Facilitation Effects On Learning And Suboptimal Choice In Pigeons (Columba Livia), Peyton Mueller

Theses and Dissertations--Psychology

The social facilitation effect describes a change in the behavior of an individual due to the presence of another organism of the same species (i.e., a conspecific). Many theories exist that attempt to explain why this change in behavior exists across species. A set of four experiments were executed to best explain how pigeons learn in the presence of non-competing conspecifics. The first experiment sought to replicate an interesting effect previously found in cockroaches and rats, such that conspecific presence inhibits performance early in training but facilitates it with increased training. The second experiment placed the novel response acquired in …

Seeing The System Vs Seeing The Individual: How Contextual Information And Framing Facilitate Perceptions Of Structural Inequality, Derek Kahng

Theses and Dissertations--Psychology

The current study investigates factors that facilitate adolescents' structural attributions. Namely, we focus on two main factors. First, we investigate if contextual information such as intergroup/intragroup comparisons and group/individual level framing of inequalities affects the likelihood of making structural attributions to race-based inequalities in academic achievement. Second, we investigate if the likelihood of making structural attributions differs based on individual characteristics, such as the individuals’ race/ethnicity, subjective and objective social status, and belief in meritocracy and a just world. Results and its implications will be discussed in the paper.

The Effects Of Extended Fructose Access On Relative Value And Demand For Fructose, Saccharin, And Ventral Tegmental Stimulation, Megan Halloran

Theses and Dissertations--Psychology

Globally, food addiction (FA) is a growing area of research and is largely attributed to the availability of foods that are both energy dense and high in fats and sugars. Further, it has been suggested, that sugar and fat, when consumed frequently, have properties similar to drugs of abuse. While the validity of FA is questioned, researchers have drawn parallels between substance use disorder (SUD) and FA. For example, sugar binge models emphasize craving, withdrawal and binging as primary components of FA, which are also hallmarks of SUD. Additionally, both natural rewards, like sugars, and drug rewards act on the …

Bipolarity Of Maladaptive Personality Traits In The Alternative Model Of Personality Disorders, Alexandra Hines

Theses and Dissertations--Psychology

It has been posited that extremely high or extremely low levels of any personality trait in the Five Factor Model of Personality can be maladaptive. However, the Alternative Model of Personality Disorders (AMPD) in Section III of the DSM-5 is composed almost exclusively of unipolar maladaptive traits. The lack of maladaptively low neuroticism and high extraversion fails to fully cover psychopathy; the lack of maladaptively high extraversion fails to cover histrionic personality disorder (HPD); the lack of maladaptively high agreeableness fails to cover dependent personality disorder (DPD); and the lack of maladaptively high conscientiousness fails to cover obsessive-compulsive personality disorder …

The Sport Concussion Assessment Tool: A Multidimensional Symptom Model For Detecting Elevated Post-Concussion Symptoms, Eric Ingram

Theses and Dissertations--Psychology

Following sport-related concussions, a multidimensional symptom interpretation may identify athletes with domain-specific problems when beginning to return-to-play (RTP). This study investigated whether a four-factor model of post-concussion symptoms (i.e., cognitive, physical, affective, and sleep-arousal) would identify student-athletes with persistent concerns not reflected by their total symptom score. Collegiate student-athletes (N=24,696) from the Concussion Assessment Research and Education consortium completed the Sport Concussion Assessment Tool – 3rd edition Symptom Evaluation at baseline and two post-injury follow-ups (i.e., beginning RTP and 6-month). Confirmatory factor analysis was used to compare one- and four-factor models of post-concussions symptoms. Normative reference data were …

The Condom Use Outcomes And Sexual Functioning Of Young Adult Latinas: The Roles Of Intimate Partner Violence, Posttraumatic Stress Disorder, And Marianismo Beliefs, Jessica Flores

Theses and Dissertations--Psychology

Intimate partner violence (IPV) has been linked to poorer condom use outcomes and sexual functioning in women broadly. Limited studies have examined these associations in Latina samples through a culturally sensitive, trauma-informed lens. A sample of 383 U.S. Latina/Latinx/Hispanic women (Mage = 25.29 years; SD = 4.44) who had a past-year intimate relationship completed a cross-sectional online survey of IPV history, posttraumatic stress disorder (PTSD) symptoms, marianismo beliefs (i.e., traditional Latina gender role expectations), condom use outcomes (i.e., condom use attitudes, efficacy, negotiation efficacy, and behaviors) and sexual functioning. Linear regression models found that past-year IPV was positively related …

Body-Based Harassment And Eating Disorder Symptomology In Cisgender, Transgender, And Gender Nonconforming Individuals, Sharla D. Biefield

Theses and Dissertations--Psychology

Past research estimates that over 60% of adolescents and young adults report eating disorder symptomology (EDS), increasing their risk for psychiatric and physical comorbidities, substance abuse, and self-harm. EDS rates are also higher among transgender and gender nonconforming (TGNC) individuals. TGNC individuals also experience higher rates of bias-based harassment, than their cisgender peers. Much of this harassment is body-based harassment (BBH), such that the harassment often targets aspects of an individual’s body. The current study utilized a pantheoretical framework, incorporating minority stress theory and objectification theory, and a multi-method approach to investigate (1) if BBH increases TGNC individuals’ risk for …

Measurements Of The Binding Energies Of Ions On Plastic Surfaces In Liquid Nitrogen, Ashok Timsina

Theses and Dissertations--Physics and Astronomy

To improve the present limit of the neutron electric dipole moment (nEDM) from 1.8*10^-26 e. cm to ~ 3*10^-28 e. cm, the nEDM@SNS experiment plans to increase neutron density by storing ultracold neutrons in superfluid helium-4. In this experiment, the central part of the apparatus consists of two deuterated tetraphenyl butadiene (dTPB) coated poly(methyl methacrylate) (PMMA) cells, which are sandwiched between grounded and high-voltage electrodes. To achieve such precision, the externally applied electric field has to be stable at the 1% level over a time period of about 1000 s. Several sources of ambient ionizing radiation generate charged …

Mechanical And Morphological Characterization Of Energy Materials By Nanoindentation And Scanning Probe Microscopy, Jacob Hempel

Theses and Dissertations--Physics and Astronomy

The demand for robust materials in energy-based applications such as solid electrolytes for batteries, piezoelectric composites for mechanical energy harvesting, or new polymer materials for polymer binders in composite electrodes is on the rise. Mechanical degradation is the most common way for devices to fail in operation, thus a thorough understanding of a material’s mechanical properties is essential for application purposes.

In this dissertation, the mechanical characterization of novel boron cluster solid electrolytes is presented. Therein, we determine the elastic modulus and hardness of these compounds using instrumented indentation. A comparison is made against other solid electrolytes. It is found …

Social Transformation During The Middle - Late Preclassic (1,000 Bce - 150 Bce) At Ucí, Yucatan Mexico, Daniel Vallejo-Cáliz

Theses and Dissertations--Anthropology

The focus of this project is to track the social change developments in Ucí, Yucatan, Mexico, during the Middle (1,000 – 400 BCE) and Late Preclassic (400 – 150 BCE) that served as foundations to institutionalized hierarchy. This research is geared towards understanding if there were any expressions of social differentiation in the earliest, detectable moments in the history of Ucí, and what were the mechanisms used to eventually make distinctions permanent. Applying an agency approach, I argue that social actors may cause structural change, both consciously and inadvertently, through the application of several strategies aimed to enhancing their role …

The Design Of Primary Holding Magnet For The Lanl Neutron Electric Dipole Moment Experiment, Piya Amara Palamure

Theses and Dissertations--Physics and Astronomy

The measurement of the permanent electric dipole moment of the neutron (nEDM) plays a significant role in searching for sources of beyond standard model CP violating physics. The goal of the Los Alamos National Laboratory (LANL) nEDM experiment is to push the upper limit of the nEDM to < 3 × 10−27 e·cm (68 % CL). A highly uniform magnetic field is key to achieving this sensitivity for the nEDM measurement by reducing the systematic uncertainties associated with the magnetic field non-uniformity. The B0 coil was designed to achieve a field uniformity of < 0.3 nT·m−1 at a nominal holding field of 1 µT. This document will outline a novel technique employed in the construction of the B0 coil using printed circuit boards (PCBs) and will present preliminary field maps obtained with the B0 coil housed in a magnetically shielded room (MSR) at LANL.

As Ultra Cold Neutrons (UCNs) move from the source to the measurement cells, the UCNs experience a large magnetic field gradient in the region between the layers of the MSR. This large gradient would otherwise cause depolarization of the UCNs. To mitigate this, a double cos θ coil will serve as the …

The Radial Quenching Progression Of Nearby Galaxies, Chenyu Zhao

Theses and Dissertations--Physics and Astronomy

In this dissertation, we explore the spatial distribution of quiescent regions within galaxies using data from the Sloan Digital Sky Survey IV Mapping Nearby Galaxies at Apache Point Observatory (SDSS-IV MaNGA). Our analysis focuses on a radial range spanning from 0.3 R e to 1.2 R e and involves the development of innovative data selection and processing methods. Through this investigation, we identify two prominent types of transition galaxies: central-star-forming galaxies (C-SF galaxies) and central-quiescent galaxies (C-Q galaxies). Notably, we observe a correlation between galaxy mass and the predominant type of transition, with more massive galaxies tending to be C-Q …

Symbolic Computation Of Squared Amplitudes In High Energy Physics With Machine Learning, Abdulhakim Alnuqaydan

Theses and Dissertations--Physics and Astronomy

The calculation of particle interaction squared amplitudes is a key step in the calculation of cross sections in high-energy physics. These complex calculations are currently performed using domain-specific symbolic algebra tools, where the computational time escalates rapidly with an increase in the number of loops and final state particles. This dissertation introduces an innovative approach: employing a transformer-based sequence-to-sequence model capable of accurately predicting squared amplitudes of Standard Model processes up to one-loop order when trained on symbolic sequence pairs. The primary objective of this work is to significantly reduce the computational time and, more importantly, develop a model that …

A Multidimensional View On The Emission-Line Diagnostics Of The Warm Ionized Gas In Nearby Galaxies, Xihan Ji

Theses and Dissertations--Physics and Astronomy

The baryonic cycle, being a fundamental process that shapes the cosmic ecosystem, describes the transformation and migration of baryonic matter in different phases. The warm ionized interstellar medium (ISM), defined as low-density gas that has temperature of the order of 10,000 K, represents an important link of the baryonic cycle and can be produced by a variety of energetic activities in galaxies, such as star formations, active galactic nuclei, and so forth. More importantly, the formation and evolution of the warm ionized gas not only traces the ongoing activities of the galaxies, but also reveals the past evolution of galaxies …

Investigations Of Epitaxial Heterostructures Of Layered Iridates With Resonant X-Ray Techniques, Sujan Shrestha

Theses and Dissertations--Physics and Astronomy

In layered 5d transition metal oxides, like Sr₂IrO₄, strong spin-orbit interaction comparable to the relevant interactions such as electron correlation and crystal field splitting provides fertile ground for emergent non-trivial phenomena. Some of these phenomena include metal-insulator transition, high-temperature superconductivity, and spin-orbit Mott insulator. The ground state is governed by the spin-orbit-entangled pseudospins J_eff =1/2, which have a significant orbital contribution. Therefore, magnetic exchange interactions and anisotropies are highly susceptible to external stimuli such as strain and heterointerface. As a result, it has a significant impact on the magnetic properties of the system. However, …

From Jane Austen To Meghan Markle: The Persistence Of British Imperialism In White Popular Feminism, Kathryn M. Kohls

Theses and Dissertations--English

This dissertation traces the persistent threads and values of white womanhood from the nineteenth-century British Empire to modern American popular culture. The figure of the white woman was significant to upholding colonialism and empire in the literary mass media and culture of the nineteenth century, and I argue that this figure continues to be used in popular media and online content today to surreptitiously uphold white supremacy and obscure race and gender inequalities. This dissertation will explore the overlaps between nostalgia, historical revisionism, white womanhood, white supremacy, and white feminism in modern American popular culture. The connections between, and the …

Vapr, Henry Knollenberg

Theses and Dissertations--English

vapr is a collection of short stories loosely interconnected via an anthropoid of smoke self-titled the Antimmanuel. vapr is an acronym for VOID & AUGURY & PRESENCE & RESIDUE; there is nothing else, and it is all ephemeral. The Antimmanuel is the guide; it is there with us even when god is not – within capitalism, within religion, within mental health crises, etc. Although very much not a work of Realism, this collection of eight stories grasps for, at the very least, its own author’s understanding of the real – what it feels like to live in middle America in …

Stick With Me: Essays, Clay Shields

Theses and Dissertations--English

A small-town Appalachian deviant confronts the frequent, recurrent grief of the opioid crisis and its mortal, psychological, and communal consequences. This collection endeavors to explore substance use, addiction, geopolitical exploitation of Kentucky, central Appalachia, and surrounding areas, while also celebrating the lives of individual loved ones lost to deaths by suicide, drug overdose, and alcoholism. Here, the common narrative of depravity surrounding addiction is challenged through the rendering of full characters capable of love, trust, friendship, humor, mental health management, and personal growth. Time and place factor fundamentally into the stories told here—whether based in central Kentucky or central Appalachia, …

Responses To Exercise Anchored To Vigorous Intensity Heart Rates, Djadmann Gustave

Theses and Dissertations--Kinesiology and Health Promotion

Exercise prescription to improve cardiorespiratory endurance (CE) is often based on percentages of the reserve or maximum heart rate (HR_peak) or oxygen consumption rate (V̇O_2peak)that reflect vigorous intensities (77-95% HR_peak, 64-90% V̇O_2peak). These intensities elicit a rating of perceived exertion [RPE] response between 14-17 on the 6-20 Borg Scale. It is recommended that exercise within these ranges be sustained for 20-60min per session. The purposes of this study were to: 1) Determine the metabolic (V̇O₂) and perceptual (RPE) responses as well as the sustainability of exercise (time to exhaustion [T …

Physical Activity Preference And Participation In Middle School Age Students In Kentucky, Fabian Correia

Theses and Dissertations--Kinesiology and Health Promotion

Physical activity (PA) in youth is significant as it begins to lay the fountain for a healthier lifestyle as children age. The benefits of being regularly physically active are plentiful as it improves muscle strength, cardiovascular, fitness, and cognitive functions (Rodgers, 2008). However, oftentimes in physical education classes, the voice of the student tends to go unheard. The purpose of this study was to determine how the perception or preference to be physically active differs by age, gender, and/or ethnicity in a middle school setting. The goal of this study is to shed ligt on how building a more inclusive …

Effect Of Sleep Restriction On Quadriceps’ Strength And Voluntary Activation, Scott Sigrist

Theses and Dissertations--Kinesiology and Health Promotion

Background: As little as three nights of sleep restriction reduces muscle strength. More than one-third of Americans are chronically sleep restricted (< 7.0 hours/night) and are at risk of muscle weakness (dynapenia). Presently, the mechanistic cause of sleep restriction-induced dynapenia (SRID) has not been elucidated. Rapid changes in muscle strength are typically driven by short-term changes in muscle contractility or voluntary recruitment. The purpose of this study was to investigate how sleep restriction affects muscle contractile function and voluntary recruitment. Methods: A sample of 12 subjects (age 24.8 ± 2.6y) underwent isometric and isokinetic knee extensor muscle testing following 3d of adequate sleep (SA; 8.05 ± 0.45h), 3 d of sleep restriction (SR; 5.02 ± 0.05h), and 7d of washout (WO, 8.27 ± 0.50). The morning (7-11a local time) following the last day of each sleep period, subjects performed muscle strength testing using an isokinetic dynamometer. Subjects sat upright with the dominant leg secured at 60⁰ of knee flexion to optimize maximal quadriceps torque. They then performed 3 maximal voluntary isometric contractions (MVICs) of the quadriceps. Then subjects performed 6 submaximal contractions at 15, 30, 45, 60, 75, and 90% of the greatest MVIC. Next, subjects completed an interpolated twitch experiment while on the isokinetic dynamometer to assess voluntary activation. Finally, subjects completed 5 repetitions of isometric contractions, in descending order, at speeds of 300, 240, 180, 120, and 60 degree/s. From these methods we measured the highest MVIC, calculated the voluntary activation (VA), measured twitch properties, and compared the torque-EMG relationship. One-way repeated measures ANOVA were used to compare sleep, MVIC, and VA values, two-way (time x twitch property) repeated measures ANOVA was used to compare twitch properties and the torque-EMG relationship. Results: MVIC torque decreased following SR compared to SA before and after sleep restriction (SA: 217.1 ± 69.4 Nm vs. SR: 199.4 ± 67.1 Nm, p = 0.032). MVIC after WO (219.2 ± 54.2 Nm) was significantly greater than SR (p = 0.018) but was not significantly different from SA (p = 0.991). Although peak isokinetic torque decreased with increasing velocity (p < 0.001), there was no significant effect of sleep or sleep x speed interaction. Peak twitch torque and rate of torque
development, but not relaxation rate, were significantly greater in the potentiated state, but no significant effect of sleep or sleep x time interaction was noted. Sleep 3 condition did not significantly affect voluntary activation (SA: 86.3 ± 11.1% v. SR:86.6 ± 11.9% v. WO 87.7 ± 11.1%; p = 0.695). The torque output at various levels ofelectromyography (EMG) activity was not significantly different among sleep conditions (p = 0.383). The mean power frequency (MPF) of the VL was …