Digital Commons Network^™

Examining Perceived Stigma, Disclosure, Self-Compassion, And Health-Related Quality Of Life In College Students With Cystic Fibrosis, Anna R. Hangge

Electronic Theses and Dissertations

Cystic Fibrosis (CF) is a life-limiting genetic disorder that affects the lungs, pancreas, and other organs. Recent advances in CF-related healthcare have improved the life expectancy of individuals with CF from childhood to approximately 50 years old (CFF, 2020). Therefore, more individuals with CF are attending college and facing challenges within this new stage of life. This study examined perceived stigma, disease disclosure, self-compassion, and health-related quality of life (HRQoL) in a sample of current and former college students with CF to understand their psychosocial experience of managing their illness while in college. Results indicated that perceived stigma and HRQoL …

Optimization Based Parameter And State Estimation Framework For Remote Microgrid Frequency Dynamics Modeling Using Probing Signals From Energy Storage Systems, Manisha Rauniyar

Electronic Theses and Dissertations

The primary aim of this thesis is to deliver an efficient design and selection of probing signal needed to estimate state and parameters representing the power system frequency dynamics with the proposed estimation technique in real-time with minimum computational time and cost. These test cases are designed for power system researchers that need to estimate and control analysis at the remote microgrid level. Case studies are presented that can be simulated at the transmission and distribution level in power grids, and in remote isolated microgrids where the independent system operator (ISO) has control. Increasing utilization of renewable energy sources and …

Determining The Impact Of Corn Source On Nutrient Availability And Pig Performance, And Improving Boar Performance During Heat Stress, Jordan Jansen

Electronic Theses and Dissertations

The quality and effectiveness of the feedstuffs included in diets of production livestock directly impact yield efficiency and performance characteristics desired by producers. This thesis focuses on the performance and digestibility of corn from different countries in pig diets and how different feed additives can be supplemented to improve boar reproductive performance during heat stress. Corn is the largest energy source in common pig diets. The physical characteristics of corn such as broken kernels, foreign material, and excessive dust are said to negatively impact the quality of the grain for pig diets by being less digestible and a worsened nutrient …

A Call For Critically Inclined Higher Education Data, Wendy A. Fish

Electronic Theses and Dissertations

The economic logic of neoliberalism has reached its zenith—now firmly entrenched in our political, social, and cultural transactions (Giroux, 2014; Harvey, 2005). As a result, we stand on the precipice of a new era—the data era—in which neoliberalism’s orientation towards accountability, micro-management, and hierarchical ordering mediates all social and political narratives. Data, it is said, is fast becoming “the new oil”—the most valuable global resource (Bhageshpur, 2019; Harari, 2018).

This is problematic. Although there are countless ways in which the application of data has improved the world, it has a long, dark history as a technology of oppression. Yet, data …

Equity Battles: Multicultural Leadership For English Language Learner Students, Alfredo Pargas

Electronic Theses and Dissertations

The focus of this study was to increase teachers’ and school leaders’ capacity and awareness to be better multicultural leaders for English Language Learner (ELL) students. This study produced several recommendations to address this issue. During this study, I used improvement science as the methodology and included a variety of stakeholders as participants. The conceptual framework used to guide this study included community cultural wealth and funds of knowledge. Using both the voices of ELL families and the input of the school equity team, which includes teachers and a school leader, we collaboratively created a six-stage intervention program to increase …

Interrogating Whiteness In Graduate Education Culture: A Phenomenological Exploration Of Southeast Asian American Graduate Student Experiences, Lesley Nina Sisaket

Electronic Theses and Dissertations

The purpose of this transcendental phenomenological study is to understand the role that whiteness has in shaping the graduate education experiences of Southeast Asian American students in the United States. This study explores two research questions. 1) How do Southeast Asian American graduate students describe their graduate education? 2) How do Southeast Asian American graduate students describe concepts of whiteness, if any, throughout their graduate education? According to the experiences from six selfidentifying Southeast Asian American students, their graduate education experiences were described to be racially taxing, unchallenging, and isolating experiences. These findings stemmed from their graduate education experiences, which …

Investigaion Of The Gamma Hurdle Model For A Single Population Mean, Alissa Jacobs

Electronic Theses and Dissertations

A common issue in some statistical inference problems is dealing with a high frequency of zeroes in a sample of data. For many distributions such as the gamma, optimal inference procedures do not allow for zeroes to be present. In practice, however, it is natural to observe real data sets where nonnegative distributions would make sense to model but naturally zeroes will occur. One example of this is in the analysis of cost in insurance claim studies. One common approach to deal with the presence of zeroes is using a hurdle model. Most literary work on hurdle models will focus …

Design Of Human Inspired Feet For Mithra, A High-Performance Humanoid Robot, Spencer Lyle Brewster

Electronic Theses and Dissertations

This thesis explores the foot design for the new humanoid robot Mithra, with the goal to improve impact mitigation, natural gait throughout the gait cycle and balance. Using human gait parameters, a stiff aluminum foot was designed to emulate human center of pressure rollover trajectories. In addition, a 2D dynamic Finite Element Analysis (FEA) of the gait cycle was created in Abaqus to rapidly prototype foot designs. Data from the FE model provided impact forces, parameters for distal foot power evaluation and maximum lean angles. From this model a flexible nylon foot was optimized for the given design objectives. The …

Contact Simulation For Evaluating Patient Specific Surgical Guide Stability, Vincent Nierste

Electronic Theses and Dissertations

This study proposes a novel computational method to quantify guide stability for Patient Specific Instrumentation (PSI) guides. A finite element contact model was used to analyze the final position of PSI guides on a femur across a range of loading parameters representing forces applied by a surgeon during operative use. Separate segmentation methods were used for the guide and bone geometry to represent differences between segmentation and actual patient geometry. The region of loading parameters over which the guide exhibited a consistent final position was measured and reported as Guide Stability Score. The model was verified using cadaver specimens for …

Identifying Sources Of Resistance And Fungicide Efficacy Against Fungi Causing Phomopsis Stem Canker In Sunflower, Renan Guidini

Electronic Theses and Dissertations

Phomopsis stem canker is a major threat to sunflower (Helianthus annuus L.) production worldwide and its prevalence has increased from 1.5% in 2001 to 61.0% in 2015 in the sunflower producing U.S. states of Colorado, Kansas, Minnesota, Nebraska, North Dakota, South Dakota, and Texas. The disease causes early senescence and lodging of sunflower plants resulting in yield losses up to 40% and oil content up to 25%. Several species of Diaporthe have been reported to cause Phomopsis stem canker. In the United States, Diaporthe helianthi Munyt.-Cvetk. et al. and D. gulyae Shivas et al., have been reported as predominant causal …

Identity Negotiations In Family Relationships: Discussing Substance Use Disorder Through The Communication Theory Of Identity, Sarah-Michele Q. Weaver

Electronic Theses and Dissertations

Guided by the communication theory of identity (CTI), the current study explores identity negotiations among family members who have experience with substance use disorder. Semi-structured interviews were conducted with 9 participants. Personalenacted, enacted-relational, and personal-relational identity gaps guide the scope and use of CTI. Findings mirrored 3 major themes in consideration of these identity gaps: (1) participants embraced or rejected SUD as a central aspect of personal identity, (2) participants experienced turbulence in relational identities due to SUD, and (3) personalrelational identity gaps and alignment surface in multiple contexts where interpersonal communication occurs.

A Non-Reacting Passive Scalar Comparison Of Starccm And Openfoam In A Supersonic Cavity Flame Holder, Thomas Nuese

Electronic Theses and Dissertations

The scramjet engine equipped with a modern-day airliner would allow for very quick travel across the United States. The major problem is that designing such an engine and testing it to make sure it is safe would cost millions if not billions of dollars. Computational fluid dynamics allows for complex designs to be tested but can still take many days, weeks, or even months to complete. With the use of computational fluid dynamics (CFD), the scramjet engine can be analyzed to determine a quicker way to test and develop a reliable configuration in addition to analyzing the effects of different …

Study On Performance Of Pruned Cnn-Based Classification Models, Mengling Deng

Electronic Theses and Dissertations

Convolutional Neural Network (CNN) is a neural network developed for processing image data. CNNs have been studied extensively and have been used in numerous computer vision tasks such as image classification and segmentation, object detection and recognition, etc. [1] Although, the CNNs-based approaches showed humanlevel performances in these tasks [2], they require heavy computation in both training and inference stages, and the models consist of millions of parameters. This hinders the development and deployment of CNN-based models for real world applications. Neural Network Pruning and Compression techniques have been proposed [3, 4] to reduce the computation complexity of trained CNNs …

Combining Soil Health And Fertility Measurements To Improve The Accuracy Of Predicting Corn Grain Yield Responses To P And K Fertilization, Benjamin Groebner

Electronic Theses and Dissertations

Researchers have pointed to changes in climate and land management practices to justify the need to reevaluate the accuracy of current South Dakota (SD) corn (Zea mays L.) P and K fertilizer recommendations. Also, an increase in soil health understanding has created the potential for soil health measurements to be used to improve the accuracy of these recommendations. The objectives for this study were to 1) evaluate the current P and K critical values and 2) determine the effect of including soil health indicators on improving fertilizer recommendation accuracy. This project was conducted throughout central and eastern SD from 2019-2021 …

Genome-Wide Association Mapping And Genomic Prediction For Enhancing Fhb Resistance In Hard Winter Wheat, Jinfeng Zhang

Electronic Theses and Dissertations

Wheat is one of the most important staple crops providing 20% of energy for 35% of the world population. Fusarium head blight (FHB), primarily caused by the fugal Fusarium graminearum Schwabe, is a damaging disease in wheat that affects global wheat production every year and causes food safety issues. The disease not only reduces the grain yield and quality but also produces mycotoxin in the diseased kernels making them unsuitable for human consumption or as livestock feeds. Breeding FHB resistant cultivar is the most effective and economical approach to managing the disease. This study combines genome-wide association study (GWAS) and …

Disentangling The Complex Evolutionary History Of Invasive Russian Thistle: Phylogenetic Relationships, The Role Of Hybridization, And Public Engagement, Deva Raj Khanal

Electronic Theses and Dissertations

Invasive species are forces of environmental, economic, and social change with detrimental impacts on ecosystems, commerce, agriculture, and human health. However, we still have a poor understanding of the processes that could be driving invasive potential. Hybridization may contribute to the establishment and spread of invasive lineages, as it may enhance genetic variation and facilitate rapid adaptation. Focusing on Russian thistle (Salsola tragus s.l., family Amaranthaceae) and closely related species, my thesis aims to clarify phylogenetic relationships and investigate how hybridization has shaped the invasion dynamics of these lineages. Known as one of the fastest plant invasions in the United …

Northern Great Plains Saline Sodic Soil Development, Classification, Remediation, And Management., Shaina Westhoff

Electronic Theses and Dissertations

Soil salinity and sodicity are issues of growing concern in the United States (U.S.) and globally. Knowledge gaps for glaciated, dryland salt-affected soils exist because much original salinity and sodicity research focused on irrigated systems. Land managers are being asked to produce food, feed, fiber, and fuel for an expanding global population. The number of land managers and crop advisors who are affected by these soils is increasing. Addressing salinity and sodicity knowledge gaps will be critical for their success. Salinity and sodicity have been impeding crop productivity since the advent of cultivation. Saline and sodic soils form via multiple …

The Contribution Of Bioethics To Home Healthcare (Hhc) In Saudi Arabia, Saeed Alghamdi

Electronic Theses and Dissertations

This dissertation examines the contribution of bioethics to Home Healthcare (HHC) In Saudi Arabia (SA). Through exploring the critical bioethical issues that have influenced the implementation of home health care, the dissertation highlights the significance of incorporating bioethics in home health care. Organizational ethics has led to the regulation of healthcare professionals, patients, and the stakeholders within clinical care settings. Healthcare organizations and other stakeholders, such as global health bodies, should formulate laws and policies that promote bioethics in contemporary healthcare. The Kingdom of Saudi Arabia, through the Ministry of Health, should promote the adoption of home health care services …

Loneliness, Interpersonal Goals, Life Satisfaction, And Subjective Well-Being In Older Adults, Francesca C. Ezeokonkwo

Electronic Theses and Dissertations

Background: Loneliness is detrimental to health and is linked to numerous physiological and psychological problems. People across the age spectrum can be affected by loneliness at one point or another in their lives; however, older adults are disproportionally affected.

Aims: This study investigated the effect of interpersonal goals (compassionate and self-image goals), life satisfaction, and subjective well-being on loneliness in older adults and the influence of demographics and social support. The Ecosystem-Egosystem Theory of Social Motivation served as the theoretical framework.

Design and Method: This descriptive cross-sectional correlational study used the 2016 Health and Retirement Study. Participants were 65 years …

Real-Time Monitoring Of Cell Death Progress Using Capacitance Spectroscopy, Suyang Wu

Electronic Theses and Dissertations

Biologics, including the monoclonal antibody (mAb), has experienced rapid development in the last decade. However, the price of biologics is often prohibitively high because of the low process efficiency. Delaying the inevitable cell death improves the productivity of upstream bioprocessing, whose success relies on monitoring the cell death onset that indicates the timing for preventive actions.

This study proposes to develop a real-time monitoring model that quantifies the dying cell percentage in lab-scale bioreactors using capacitance spectroscopy. The capacitance spectroscopy contains cell death-related information due to various physical properties changes during the cell death process, e.g., cytoplasmic conductivity change. The …

The Effect Of School-Based Mindfulness Intervention On Student Attention And Executive Function: A Meta-Analysis, Sarah E. Rea

Electronic Theses and Dissertations

Schools are facing increasing responsibility to foster the social-emotional development of students. One way in which schools can improve student functioning is through school-based mindfulness interventions. Using mindfulness practices, in particular, can teach students to increase their attention of surroundings and internal experiences, and awareness of their thoughts and behaviors. While the evidence-base for mindfulness interventions in schools continues to grow, there are several studies that show promising outcomes. The purpose of this study was to determine how large the effect sizes for school-based mindfulness studies are in regard to increasing student attention, cognitive flexibility, and working memory. Results indicate …

Culturally Therapeutic Approaches To Prejudice And Discrimination: Formulations, Interventions, And Structural Change, Jayme J. Jenkins

Electronic Theses and Dissertations

Aims. Though psychologists are generally well-positioned to implement micro- and macro-level interventions from their roles as clinicians, educators, researchers, and consultants, there is a paucity of formal guidance on how to approach client-generated or structural prejudice and discrimination. The current study addresses this literature gap by integrating previous literature and implementation models from a related field toward a novel treatment approach.

Background. A critical literature review supported intervention-focused conceptualizations of “supremacism” and demonstrated that mutually reinforcing micro- and macro-level discrimination generates demographic disparities in safety, liberty, and well-being. This typically emerges in the United States as White supremacist heteropatriarchy while …

Building A New Model Of Church-State Collaboration On Environmental Care In Ghana Based On Catholic Social Teaching And African Theological Traditions, Emmanuel Abbey-Quaye

Electronic Theses and Dissertations

Abstract

The care of the environment has always been considered by the Ghana Catholic Church as an important aspect of her pastoral care and evangelizing mission in Ghana. Hence, in their various teachings in communiqués and other pastoral documents from 1965 till now, the Ghana Catholic Bishops’ Conference has consistently addressed the major environmental challenges confronting Ghana such as deforestation, mining, pollution, etc., applying the principles of stewardship and care of creation, intergenerational solidarity, integral ecology, etc., to ground these teachings.

Besides, in acknowledging that neither the Catholic Church nor the Ghanaian Government alone can resolve the various ecological crises …

Counselors Dumbfounded: Implications For Counseling Ethics, Ivan Irizarry

Electronic Theses and Dissertations

How counselors should make ethical decisions frequently differs from how counselors actually make ethical decisions, which is often a non-linear process. Social Intuitionist Theory (Haidt, 2003) suggests this process entails a socially influenced intuitive judgment followed by post hoc rationale. The purpose of this study was to examine whether moral dumbfounding, which entails maintaining a moral judgment without supporting reason, occurs with practicing counselors. The results of survey data and open-ended coding showed that 58.5% of counselors were dumbfounded at least once when presented with four moral or ethical vignettes. Additional analyses exploring differences in dilemma-based vs. non-counseling vignettes, moral …

Does Speech-To-Text Assistive Technology Paired With Graphic Organizers Improve The Written Expression Of Students With Traumatic Brain Injuries?, Kayla Cuifolo

Electronic Theses and Dissertations

A traumatic brain injury (TBI) can range from mild to severe and can cause debilitating outcomes that require children to need specialized medical or educational services post-injury. Outcomes vary and are dependent on the location of injury, age, severity, and environmental factors. Some common deficits that happen as a result of a brain injury are fine motor and executive functioning skill difficulties. Fine motor and executive functioning skills are an important component of written expression. Therefore, this current study utilized a brief experimental analysis in order to determine the effects that speech-to-text assistive technology along with a graphic organizer has …

Seasonal Flammability Comparisons Of Native And Exotic Plants In The Post Oak Savannah, Blackland Prairie, And Pineywoods Ecoregions Of Texas, Michael Tiller

Electronic Theses and Dissertations

East Texas’ diverse landscape can present year-round wildfire seasons that can be influenced by seasonal and regional differences in climate and physiography. Greater insight into the fundamental thermal behavior of wildland fuels can aid in fire behavior prediction and development of fire-resistant plant lists. This study focused on estimating seasonal and regional flammability characteristics of five evergreen species: yaupon (Ilex vomitoria), Chinese privet (Ligustrum sinense), greenbrier (Smilax spp.), eastern red cedar (Juniperus virginiana), and escarpment live oak (Quercus fusiformis); and two deciduous species: Chinese tallow (Triadica sebifera) and southern …

Stratigraphic Analysis Of The Capps Limestone In The North Norton Oil Field In Runnels County, Texas, William Thompson

Electronic Theses and Dissertations

The Desmoinesian (Middle Pennsylvanian) Capps Limestone Member of the Mineral Wells Formation is a carbonate reservoir located in North Central Texas. It consists of interbedded limestone, sandstone, and shale units. Much of the Capps Limestone exists in the subsurface of Brown, Coleman, Runnels, Coke, Nolan, and Taylor counties, however, the Capps Limestone outcrops on the surface in Brown, Eastland, and Palo Pinto counties.

The cored interval from Runnels County was deposited in a marginal marine environment during the Middle Pennsylvanian Period. Although the Capps Limestone was first described in the 1890s, there is still much to be discovered about its …

An Exploration Of Afrocentric Features At A Black Homeschool Collective., Tytianna Nikia Maria Wells

Electronic Theses and Dissertations

This dissertation explores the development and benefits of familial relationships as the primary feature of Afrocentricity at Black Scholars Academy (BSA), a Pre-Kindergarten (Pre-K) through 12th-grade Black homeschool collective in the United States. This qualitative study draws upon Afrocentricity as a theoretical framework to analyze and interpret data collected from classroom observations, individual interviews with current and former teachers and students, and textual artifacts between July and November 2019. Familial relationships—an African time orientation, a personalized learning plan, OurStory, and Rising Meeting—are present in BSA. Familial relationships helped students develop cultural pride, agency, self-determination, independence, liberation through education, and a …

Manifestations Of Students’ Voices: Examining Shifts, Academic Demands, And Identity Work In How Students Make Themselves Understood., Lauren Elizabeth Fletcher

Electronic Theses and Dissertations

Voice is a concept that is both highly sought after and elusive in education. While schools aim to foster students’ voices, many academic structures inadvertently conceal their voices and in turn their identities. Definitions of voice have been assumed, vague, or looked at as a writing trait, with little consideration of voices’ dynamic and mediated structures. Drawing on scholarship grounded in sociocultural theories and dialogism (e.g., Bakhtin, 1986; Engeström; 1987, Leont’ev, 1981; Rosenblatt, 1978; Vygotsky, 1978), I contribute a new, tangible definition of voice, in which voice is a dynamic happening, continually negotiated and constructed. This dissertation explores students’ voices, …

An Introductory Study Of Coal Fly Ash Enhancement For Heavy Metal Removal In Wastewater Treatment., Samuel T. Romes

Electronic Theses and Dissertations

Coal Combustion Products are the materials that remain after pulverized coal is burned to generate electricity. The fine portion, fly ash, has many re-use capabilities across various industries. Most recent data shows that approximately 60% of fly ash produced in the United States was used with the largest re-use being concrete additives. This work aims to enhance fly ash via hydrothermal treatment in order to expand the re-use capabilities of the material. These materials were tested as adsorbents for heavy metal removal from wastewater samples. The metals tested for removal were Copper (II) Acetate, Cadmium Chloride, Boric Acid, Sodium Selenite, …