Digital Commons Network^™

Density Functional Theory Study Of Some Important Biological Molecules, Desmond Khan

Theses and Dissertations

This study examines the performance of various quantum chemical methods, particularly density functional theory (DFT), in predicting noncovalent interactions in eleven unnatural amino acids. The research compares five DFT functionals (PBE-D3, B3LYP-D3, HSE06, M06-2X, and ꞷB97XD) and MP2 theory against the benchmark CCSD(T) method, using two Pople basis sets (6-31G* and 6-311++G**). Results highlight ꞷB97XD's superior performance in capturing strong dispersion interactions, especially when paired with the 6-311++G** basis set. Additionally, the study investigates interactions between biomimetic Fe and Mg co-doped montmorillonite clay and the amino acids. It reveals the necessity of employing PBE-GGA + U with U ≥ 4 …

The Healing Of Stories: International Teachers’ Lived Experiences Of School Culture Using The Hourglass Model For Mindful Reflections, Vesna Radivojevic

Theses and Dissertations

School culture affects all facets of teaching and learning. Starting from individual international teachers’ perspectives and their accounts relating to school culture, new insights and perspectives on the problem of practice were gained. The research focused on answering the questions: What are teachers’ experiences of school culture in international schools? What are teachers’ perspectives on critical components in developing a positive school culture? What was helpful to teachers when experiencing the positive and negative aspects of a school culture? A qualitative narrative research methodology involved interviewing ten international teachers who taught in K-12 grade schools in Australia, Asia, the Middle …

Using Libensemble To Enhance Numerical Ice-Sheet Flow Simulations, Kuang Hsu Wang

Theses and Dissertations

Here, we interface an ice sheet flow model, FastIceFlo v1.0, with the Python toolkitlibEnsemble to enable dynamic ensembles of computations. We test the interface’s capability to perform dynamic ensembles of computations by conducting a sensitivity analysis. The results indicate the interface’s ability to perform dynamic ensembles of computations. Future work could extend the interface to include mass balance to run prognostic simulations. The eventual goal is to run simulation ensembles of large-scale ice sheets forward in time to better assess its sea level contribution sensitivity to uncertainties in climate forcing parameterization.

Cold Pool Impacts On Supercell Thunderstorm Development And Updraft Characteristics, Ethan Anders Weisberger

Theses and Dissertations

Supercell thunderstorms are a mesoscale phenomenon characterized by an intense rotating updraft (i.e., the “mesocyclone”) and disproportionately account for more severe weather reports compared to ordinary deep convection. No previous research that we are aware of has explicitly analyzed the role that cold pools – shallow regions of precipitation-cooled air near the surface – play in impacting supercell development, sustenance, and strength. This thesis aims to fill in the gaps to the fundamental questions surrounding what role cold pools play (if any) in permitting a supercell to develop and maintain itself, how cold pools affect the strength and structure of …

Encompassing ‘Himdag’ (Indigenous Way Of Life) To Address Cardiometabolic Disease In American Indian And Alaska Native Communities Through Research, Policy And Action, Heather Medicine Bear

Theses and Dissertations

Cardiometabolic diseases (CMD), encompassing conditions such as cardiovascular disease, diabetes, kidney disease and non-alcoholic fatty liver disease, present a significant health burden within American Indian and Alaska Native (AI/AN) communities. This dissertation, through the culmination of three products, including a scoping review, policy brief and strategic planning toolkit, seeks to understand and address CMD in tribal communities through an Indigenous lens. Product #1, Interventions for Cardiometabolic Health in American Indian and Alaska Native Communities: A Scoping Review, entails a thorough review of implemented CMD interventions targeting AI/AN communities to understand programmatic, clinical, and community-based prevention strategies. By synthesizing available evidence, …

Ads-B/Gps Integrity Identification And Evaluation Using Machine Learning Models, Anton Reider Skurdal

Theses and Dissertations

Automatic Dependent Surveillance-Broadcast (ADS-B) is part of the Federal Avi-ation Authority’s (FAA) NextGen position, navigation, and timing (PNT) system, but its packets are unauthenticated and vulnerable to attack by bad actors. This re- search aims to develop methods to detect and mitigate GPS and ADS-B risks for aircraft systems. First, a Random Forest Classifier (RFC) model was trained to clas- sify categories (erroneous, noise, dropouts) of data, achieving an accuracy of 87%. Following this, many single-stage and two-stage forecasting models were tested to forecast Navigation Integrity Category (NIC) values, with the two-stage Random For- est Regressor (RFR) achieving the lowest …

Impact Of Substance Use And Perceptions Of Social Support On Psychological Distress Following Traumatic Brain Injury, Laura Gorman

Theses and Dissertations

Introduction: Traumatic Brain Injuries (TBI) are the leading cause of disability and mortality for individuals under the age of 45 (Centers for Disease Control and Prevention, 2021; Moore et al., 2014). Previous research has informed us that substance use, perceptions of social support, and TBI severity have all been associated with increased levels of psychological distress. Given the prevalence of TBI and its impact on physical and mental health outcomes, it is important to understand how outside factors (substance use and perceptions of social support) relate with TBI severity to effect overall levels of psychological distress. Objective: Drawing from self-determination …

A Student Co-Creation Lab As A Sustainable System For Oer Development, Sarah Ann Stokes

Theses and Dissertations

Open educational resources (OER) are digital and non-digital resources for teaching, learning, and research that are available for no cost and licensed with various open licenses, permitting their widespread modification and use. While these resources afford benefits to post-secondary students in terms of reduced cost, ease of access, and potential for customization, faculty members in Ontario, Canada face many barriers to creating these resources for their classes. While many post-secondary institutions have engaged in some form of OER-development initiative, the initiatives are typically not sustainable in the long term. This study explores the model, including the tools, techniques, and workflows, …

Examining Tele-Mental Health Utilization In North American Indigenous Communities, Elleh A. Driscoll

Theses and Dissertations

Tele-mental health delivery reported by clinicians in Indigenous communities before, during, and after the pandemic has largely remained unexplored across psychology literature. Tele-mental health (TMH) is the utilization of technology tools to communicate and treat clients (Riding-Malon, 2014). TMH (i.e. mental health services accessed via zoom, telephone, etc.) is associated in recent research with effective rates for mental health care treatment comparable to in-person rates for both immediate and long-term outcomes (McCord, 2020; Lin, 2021). The current study examined self-reported mental health clinicians (n=104) serving North American Indigenous clients on a variety of TMH factors during and after the COVID-19 …

On The Design Of Novel Bioplastics-Based Materials Using Advanced Blend Design And Solvent Casting, Edner Oloo

Theses and Dissertations

The development of bioplastic composites holds significant importance in addressing theescalating environmental concerns associated with conventional plastic materials, also referred to as traditional plastics. Traditional plastics are derived from fossil fuels. The utilization of fossil fuels to produce these plastic materials, and at the alarming rate they are currently being produced, contributes to several issues such as climate change, resource depletion, and plastic wastes accumulation. Therefore, development of bioplastic composites has emerged as a promising solution along with recycling. Bioplastics composites offer a sustainable alternative by utilizing degradable and renewable resources such as bioplastics (plant-based polymers) or agricultural biomass wastes. …

Perceptions Of Interpersonal Communication Skills In Undergraduate Nursing Students, Raquel Ann Zeidlik

Theses and Dissertations

Healthcare is analogous to a team sport where effective communication is vital for the success of all members of the team. If communication is ineffective – or absent – between members of the healthcare team and their patients, then issues move beyond the concern of patient satisfaction, to matters of life and death. Patients who put their well-being in the hands of a healthcare team deserve to feel safe and to receive high-quality care, delivered by the most compassionate and qualified care team possible. Barriers to effective communication continue to challenge healthcare teams, further compromising the nurse-patient relationship. A total …

Development Of Multifunctional Biobased Lubricants From Soybean Oil And Their Tribological Behavior, Piash Bhowmik

Theses and Dissertations

Depletion of mineral oil leads the researchers to look for renewable oils recently. Soybean, which is one of the most produced crops globally, has been identified as a potential source for such oil. The problem with vegetable oils is, they consist of unsaturated fatty acids which leads to oxidation of the oils. With proper modification and the use of suitable additives, these oils can be adapted for use in various sectors. High oleic oils are becoming increasingly popular due to their high oleic acid content, which is a monounsaturated fatty acid. These oils are gaining attention for their improved stability …

Administering Psychological Tele-Assessment: A Delphi Study, Amanda Willyard Walkowiak

Theses and Dissertations

The Coronavirus 2019 (COVID-19) outbreak increased demand for telehealth services for mental health providers (Zhou et al., 2020). To our knowledge, conducting psychological assessments through tele-health platforms has limited empirical and ethical support (Wright et al., 2020; Stifel et al., 2020; American Psychological Association [APA], 2020a). Moving from traditional to remote testing administration requires preparation, training, and practice (Joint Task Force for the Development of Telepsychology Guidelines for Psychologists [Telepsychology Task Force], 2013; Wright et al., 2020). Even if psychologists have access to test materials and the necessary technology to conduct tele-assessments, they may not have the training and clinical …

Christianity In Conversations About Sexuality: Influences Of Parental Communication On Young Women’S Navigation Of Nonconsensual Sexual Experiences, Danielle Piggott

Theses and Dissertations

Women are forced to cope with the reality of sexual violence in multiple ways throughout their young adult life. This study sought to understand the influence of parental messaging on how young women understand consent and their own vulnerability to sexual assault, how they respond to friends who disclose to them about experiencing sexual assault, and how they personally conceptualize and recover from sexual assault. A sample of 384 college-aged women completed an online survey with questionnaires about messages from and relationships with their parents, beliefs about sex and sexual assault, sexual history, and mental health related symptoms. Regression analyses …

The Interconnectedness Of Indigenous Health: Local, National, And International Influences, Courtney Claussen

Theses and Dissertations

Indigenous Peoples have always understood the interconnectedness of health. There are many Indigenous-specific health determinants that positively or negatively impact prevalent health conditions. Each of the products in this three-part portfolio highlight health determinants that directly or indirectly contribute to the health of Indigenous Peoples. Key topics within each product include Cultural Protocol, culturally safe practices, food security and access, type 2 diabetes, and localized health approaches. The products also highlight the historical and current impacts of colonization on Indigenous health. Each product interconnects to consider the variable ways Indigenous-specific health determinants impact Indigenous populations. In the first product, I …

A Thematic Analysis: A Lived Experience Raising A Child Diagnosed With A Neurodevelopmental Disability In A Rural Community, Matthew Kettelhake

Theses and Dissertations

In the United States, about 17% of children between the age of 3 and 18 are diagnosed with a neurodevelopmental disability (Zablowsky et al; 2019). About 14% of the population lives in a rural community (USDA, 2020). Being part of a rural community has additional challenges urban areas may not face (Sharpley et al., 1997; Hasting &Taunt, 2002; Gerstein et al.,2009; Dabrokska & Pisula, 2010). Parents of children diagnosed with a neurodevelopmental disability also face additional challenges than raising a neurotypical child. This study explored the themes and commonalities that arise from raising a child diagnosed with a neurodevelopmental disability …

The Experiences And College Readiness Of Native American Students Who Participated In Dual Credit/Dual Enrollment And Transitioned To Higher Education, Krystal Marie Caldwell

Theses and Dissertations

This qualitative research study employed the Diverse Learning Environment Model to examine how dual credit/dual enrollment course participation by Native American students impacts their college readiness and transition to college. Literature shows that students who take dual credit/dual enrollment in high school are more likely to graduate from high school and transition to college and have less time to degree completion. Furthermore, dual credit/dual enrollment course participation also increases students’ college readiness and improve student’s self-efficacy. The guiding notion of this paper are the overwhelming benefits to students who participate in dual credit/dual enrollment coursework in high school and how …

Engaging Telepsychology As A Culturally Appropriate Communicative Approach For Mental Health Intervention For Women In Ondo State, Nigeria, Toyosi Motilola Olola

Theses and Dissertations

Background: Assessing the mental health issues among Nigerian women is complex due to cultural norms, stigmatization, and traditional beliefs, which often lead to the concealment of mental health problems. Mental health issues are frequently seen through a spiritual or supernatural lens, exacerbating stigma and preventing proper medical care. There is also a lack of comprehensive data on help-seeking behaviors, with many women relying on religious leaders and traditional healers for support. Telepsychology can solve these communication challenges by offering a confidential and accessible platform that bridges traditional beliefs and modern mental health care. This study explores cultural influences on help-seeking …

Examining Correlations Of Historical Trauma And Ethnic Identification With Symptoms Of Depression In Native American College Students, Nerissa Dolney

Theses and Dissertations

The purpose of this study was to gain an understanding of how historical trauma and one’s degree of ethnic identity relate to symptoms of depression, due to controversy in the literature about such variables. Participants in this study self-identified as Native American, were over the age of 18, and were currently enrolled or have been previously enrolled at the University of North Dakota (UND). Participants completed a survey online via Qualtrics to gather information about their ethnic identity, frequency of historical loss thinking, and symptoms of depression. Historical loss thinking was found to be very prevalent among this sample, and …

The Potential Value Of The Mcmi-Iv And Pid-5 In Physical Violence Risk Assessments, Courtney Tindell

Theses and Dissertations

This study aimed to explore and identify factors from two common personality measures, the Personality Inventory for the DSM-5 (PID-5) and Millon Clinical Multiaxial Inventory-IV (MCMI-IV), to aid in the prediction of lifetime physical violence. Contemporary violence risk assessments center around structured professional judgment, which often includes risk management factors. The MCMI-IV was developed to provide insight into an individual’s motivations, needs, and behaviors based on their personality type. Thus, the MCMI-IV was thought to have the potential to provide unique insight into treatment protocols for violence reduction and prevention. Based on previous research and theory, four facet and two …

Examining Barriers And Motivation Toward University Stem Faculty Research Success, Jordan A. Jaeger

Theses and Dissertations

All university faculty pursuing scholarly goals tackle complex tasks over long periods, yet some must overcome additional adversity and challenges to succeed. Recent studies have measured faculty research success according to their self-reported accomplishments in research activities, publications, and grant writing, and motivation was a predictor of success (Stupnisky, BrckaLorenz, et al., 2019; Stupnisky et al., 2023). This dissertation describes a three-study program of research that examined how faculty navigated barriers to research success through the lens of different theories of motivation.Faculty face barriers in completing research because it often involves a lengthy and emotion filled process, from research design …

Machine Learning-Assisted Materials Development: Molecular Solubility Prediction, Polymeric Membrane Fabrication, And Scale Formation, Arash Tayyebi

Theses and Dissertations

Experiments are generally time-consuming, expensive, and rely on exhaustive planning, analysis, and testing efforts. The limitations of the traditional experimental methods in materials development can be overcome by the use of machine learning (ML) algorithms to guide and assess the discovery and fabrication processes. This dissertation involves developing different ML models, focusing on their utilization in three distinct, yet overlapping areas: Prediction of organic compound aqueous solubility, guiding separation membranes fabrication and predicting scale formation in commercially produced water systems.Prediction of organic compound aqueous solubility: A reliable and practical determination of a chemical species’ solubility in aqueous systems continues to …

The Mediating Role Of Emotion Regulation On Attachment Styles, Relationship Quality, And Internalizing Symptoms Among Emerging Adults, Summer Rae Lardy

Theses and Dissertations

Internalizing symptoms, such as anxiety and depression, impact a substantial number of emerging adults each year. Previous literature has examined relationship quality’s impact on internalizing symptoms but has yet to include emotion regulation. Therefore, both intra- and interpersonal emotion regulation’s impact on the well-established association between relationship quality and internalizing symptoms was assessed. Two-hundred and fifty-nine emerging adults were surveyed on the factors of: Relationship Quality, Attachment Style, Relationship Maintenance Behaviors, Intrapersonal Emotion Regulation, Interpersonal Emotion Regulation, Depression and Anxiety symptoms. As hypothesized, results found a negative, moderate correlation between relationship quality and internalizing symptoms (r = -.54). Additionally, there …

Promoting Athletic Training Careers Among American Indian And Alaska Native Communities, Wyatt Whitegoat

Theses and Dissertations

Athletic training, recognized for its role in providing specialized healthcare services focused on prevention, assessment, treatment, and rehabilitation of injuries for the athletic population, represents a growing profession within the healthcare field. As the need and value of athletic training services continues to grow, it is imperative for academic and Federal institutions to adapt programs and policies that reflect the diversity of the communities they serve.

Despite ongoing efforts, which should not be minimized, to promote diversity, equity, and inclusion in the athletic training profession, significant progress remains limited, particularly in increasing representation of American Indian and Alaska Natives (AIANs). …

Optimizing Laser-Based Wireless Power Transfer: A Comprehensive Study Of A 4 Quadrant Pv Module System And Its Powering And Tracking Capabilities, Ahmed Elfarran

Theses and Dissertations

This research investigates laser-based tracking systems for wireless power transfer (WPT) applications. Beginning with an overview of renewable energy and WPT technologies, the study establishes both theoretical frameworks and practical methodologies for laser-based power transmission. The experimental analyses encompass load testing with a four-quadrant module, examining the impact of laser power, load conditions, and beam diameter on power transfer efficiency, as well as the influence of target movement speed on voltage stability. Notably, we achieved a tracking speed of up to 20 mm/s, ensuring efficient power delivery even with target motion. The results demonstrate clear correlations between laser power levels …

Development Of A Comprehensive Ice-Phobicity Test Stand (Cipts) For Understanding The Fundamentals Of Ice Nucleation And Adhesion, Derrick Charles Seubert

Theses and Dissertations

From the formation of ice on the leading edges of aircraft and their wings, wind turbine blades, and even roadways and powerlines, it is clear that modern infrastructure suffers from ice formation and adhesion. Due to this fact the development of materials and surfaces to mitigate the effects of icing have gained much attention in recent years. While there are many different anti-icing and deicing techniques, the development of intrinsically ice-phobic materials and material surfaces shows the most promise as a passive anti-icing method. In this work an accurate Comprehensive Ice-Phobicity Test Stand (CIPTS) has been created to test two …

The Experience Of Caregiving Among Males Caring For A Family Member With Alzhimer’S Disease: A Descriptive Phenomenology Study, Randy John-Chapin Huard

Theses and Dissertations

The purpose of this study was to describe the phenomenon of caregiving among men caring for a family member with Alzheimer’s disease. Historically, most Alzheimer’s disease caregivers were women, and research has generally focused on female caregivers, usually the spouse. However, more men are now assuming the caregiver role. A limited number of studies have focused on male caregivers and revealed multiple inconsistencies in findings. Further, limited studies have specifically included rural male caregivers, who may experience caregiving differently due to the lack of resources and increased disparities that exist in rural populations. The knowledge gained from this research study …

Historical & Contemporary Practices Of Seal Harvesting: Policy Implications For Revitalization Among The Taa-Laa-Wa Dee-Ni’, Paula Lynne Aubrey

Theses and Dissertations

This dissertation explores the contemporary practices of seal harvesting among Indigenous Peoples, with a special focus on policies that inform the revitalization of seal harvesting within the Taa-laa-waa Dee-ni’ (Tolowa) community of Northern California and Southern Oregon. The research is conducted by an Indigenous researcher seeking to further connect to traditional practices of her tribe, and this research places a strong emphasis on cultural sensitivity and ethical integrity. The study involves a dual methodology including a comprehensive literature review to understand the cultural and ecological significance of seal harvesting, and a policy artifact review to identify wise practices and policy …

Wooyake Winyan: The Experience Of Three Native Women In Higher Education Leadership At 4-Year Institutions In The Midwest, Raven Gray

Theses and Dissertations

Native women in higher education have faced many challenges and disparities, specifically within 4-year institutions. This research used a qualitative method known as storytelling to identify ways of progression for Native women in higher education leadership while being supported by the theoretical framework of aspirational capital. Additionally, this knowledge is explained through cultural ways of storytelling, with hope of gaining perspective of Native female leadership and how this impacts Native communities within higher education. Through this research, it portrayed the experience of Native women in Higher education leadership which included their successes and challenges. Each participant shared their background of …

Saudi Acceptance Of Digital Communication And Satisfaction With Mobile Government Services (M-Government), Samah Alotaibi

Theses and Dissertations

Governments throughout the world are using developments in mobile technology to enhance electronic governance (e-government) by digitally providing government information and services. This is often known as mobile government (M-government), which caters to the needs of individuals, corporations, and governmental institutions. The main objective of this dissertation is to examine the integration of mobile government services into the government's digital communication revolution. It specifically aims to investigate the level of satisfaction and acceptance among Saudi citizens regarding the mobile applications developed by the government. The dissertation delves into their perspectives and assessments of the digital communication channels offered by the …