Digital Commons Network^™

A Computational Kinetics Model To Quantify Radiation Induced Chemical Products Of Atmospheric Gas Mixtures, Patrick Ables

Dissertations

This research is focused on the development of a computational model which will calculate the effects of radiation on the chemical composition of the atmosphere. The approach utilizes the open-source chemical kinetics toolkit Cantera to model the creation of radiation-induced reactant species within irradiated air mixtures. Chemical solutions are iteratively stepped toward chemical equilibrium within a ‘constantly stirred’ (homogeneous) reactor of fixed volume. Three different radiation chemistry models are implemented in several different pulsed and continuous radiation schemes. The first model includes the mechanisms and rates of a pulse radiation model from the literature to test the validity of the …

The Impact Of Social Determinants Of Health And Acculturation On Quality Of Life In Older Chinese American Adults With Chronic Pain: A Quantitative Study, Chi Lam

Dissertations

Despite a rapid increase in the older Chinese American adult population, there are very few research studies examining the impact of social determinants of health and acculturation on the quality of life in older Chinese American adults. The purpose of the study was to determine the impact of social determinants of health and acculturation on quality of life in older Chinese American adults with chronic pain. This quantitative, descriptive correlational study utilized Madeleine Leininger’s Transcultural Theory as its theoretical framework. Two research questions guided this study: (1) Was there a difference in the quality of life in older Chinese American …

A Tale Of Two Diagonalizations: Methods To Diagonalize A 1-D Piecewise Constant Indefinite Schrödinger Operator, Sarah Wright

Dissertations

We present two numerical methods for computing the solution of a partial differential equation (PDE) for modeling acoustic pressure, known as an extra-wide angle parabolic equation, that features the square root of a differential operator. The differential operator is the negative of an indefinite Schrödinger operator with a piecewise constant potential. This work primarily deals with the 3-piece case; however, a generalization is made to the case of an arbitrary number of pieces. In the first method, the Rayleigh-Secant Method, through restriction to a judiciously chosen lower-dimensional subspace, approximate eigenfunctions are used to obtain estimates for the eigenvalues of the …

College For What . . . How Middle School Students From Low Socioeconomic Backgrounds Perceived Post-Secondary Education, Michelle Patrick

Dissertations

This study examines the attitudes and perceptions of middle school students from low socioeconomic backgrounds about attending post-secondary institutions. As research continues to explore the experiences of traditional high school students from low socioeconomic backgrounds and students' attendance into post-secondary institutions, research concerning middle school students from low socioeconomic backgrounds preparedness for college attendance has been limited. Using a phenomenological research design to obtain the study's results from fifteen students and thirteen parent interviews provided insight into the “lived experience” of the students’ and parents' attitudes and perceptions regarding college attendance. The study found that regardless of the parents’ and …

College Sexual Assault, Career Adaptability, And Grit: A Moderation Analysis, Patricia Danielle Sparks

Dissertations

Sexual assault rates are a rising concern, particularly on college campuses. The impacts of being a victim of sexual assault were well documented in the research and spread from academic decline to negative mental health outcomes to career path derailment. Career construction theory suggested a critical developmental time period for young adults where pieces of their environment, past experiences, and personal characteristics informed their career decisions. Career adaptability is a foundational piece of career construction theory that consists of psychosocial, internal resources developmentally related to how a person learns and advances in their career goals. Grit was identified in the …

Davidsbündler: Robert Schumann, Theodor Kirchner, And An Intimate Musical World, Dandan Liu Powell

Dissertations

Theodor Kirchner is an accomplished Romantic composer in the nineteenth century. He wrote over one thousand piano pieces, and most of them have a strong influence by his mentor Robert Schumann. However, little attention has been paid to his musical works. His piano works either disappeared or are not prevalent outside of the German-speaking world. The study of Kirchner and the relationship between Robert and Kirchner’s music is not sufficient. Clara Schumann, as the wife of Robert Schumann and the lover of Theodor Kirchner also inspired both composers’ music works. Therefore, this dissertation will focus on introducing Theodor Kirchner and …

Childhood Trauma History And Vicarious Traumatization In Early Career Mental Health Professionals: The Roles Of Supervisory Working Alliance And Shame, Kady Marie Barthelemy

Dissertations

Vicarious traumatization (VT) in the context of early career mental health professionals (MHPs) with personal trauma histories has been examined in the literature on a limited basis, particularly regarding the role that supervisory working alliance and shame could contribute to the effects of VT. Research questions asked: (a) Among early career MHPs who have a personal childhood trauma history, does shame mediate the relationship between personal childhood trauma history and VT? and (b) Among early career MHPs who have a personal childhood trauma history, does supervisory working alliance moderate the relationship between personal childhood trauma history and VT? These questions …

You Don't Need Eyes To See: The Lived-Experience Of College Graduates Who Are Black Men, Born Into Poverty, And Living With A Visual Impairment, Ronald Dillard

Dissertations

The following study seeks to answer this research question: What is the lived experience of college graduates who are Black men, born into poverty, and living with a visual impairment? The researcher has used intersectionality as an aspect of Critical Race Theory (CRT) to conceptualize the research question and develop an interview protocol.

The researcher has conducted in-depth interviews for this qualitative inquiry, resulting in a narrative study. Purposeful sampling was implemented to identify three participants who fit the criteria of being a Black man, born into poverty, and living with a visual impairment. Data was reorganized to tell the …

Effect Of Exercise Training On Circulating Cancer-Associated Immune Cells In Breast Cancer Patients, Lea Haverbeck Simon

Dissertations

Breast cancer (BC) is one of the leading causes of cancer deaths among females. It is well known that the presence of a tumor decreases robust anticancer immunity via immune-modulation and enhanced immunosuppression through a process called cancer immunoediting. However, it has yet to be determined if exercise-based rehabilitation can elevate the peripheral anticancer immune profile and reduce myeloid-derived suppressor cell (MDSC) mediated immunosuppression. Purpose: To assess the effects of a 12-week prescribed, individualized, supervised exercise-based rehabilitation program on selected circulating immune cells in BC patients at the University of Northern Colorado Cancer Rehabilitation Institute. Methods: 16 female BC patients …

‘Poor Hockey Behaviors’: Athletes’ Moral Acculturation Experiences In Youth Hockey, Zachary Colter Mccarver

Dissertations

Competitive youth sport requires athletes to persistently decide what the moral course of action is across situation (Boardley, 2020; Rest, 1984). Sport cultures that contain coaches who endorse a win at all cost mentality encourage athletes’ engagement in behaviors that are detrimental to their opponents to achieve competitive success (Boardley & Kavussanu, 2007). Bandura (1991) proposed that environmental processes can alter how an individual determines the moral course of action through the anticipation of behavior to produce self-referenced positive consequences, such as pride or satisfaction. The purpose of this study was to explore athletes’ moral acculturation experiences within hockey culture …

The Impact Of Hope On The Relationship Between Socioeconomic Context And Career Exploration, Hunter Christian Vincente Montoya

Dissertations

Economic instability in the United States has significant mental health implications for populations who experience limited occupational autonomy. Literature has demonstrated that career exploration plays an important role in positive occupational outcomes, and research has begun to establish a relationship between hope and career exploration. Hope has been further associated with myriad positive outcomes in the fields of career development and counseling psychology. The purpose of this study was to examine the relationships between socioeconomic status, hope, and career exploration as guided by Social Cognitive Career Theory, and to ascertain whether hope may moderate between socioeconomic status and career exploration. …

Experiences With Writing And Reading Neuropsychological Reports: Neuropsychologist And Parent Perspectives, Zsofia Imre

Dissertations

Researchers have described common problems with psychological reports over the past several decades. Some of these issues can contribute to difficulties for neuropsychologists (e.g., efficiency, insurance reimbursement). Additionally, these problems contribute to difficulties with feasibility, readability, and satisfaction for the readers of psychological reports. However, research has been limited on the perceptions of neuropsychological reports specifically, especially related to parent experiences with neuropsychological reports. Hence, this study sought to understand the current report-writing trends, parents' experiences and satisfaction, and neuropsychologists' openness to adjusting their report-writing styles. Data were obtained through surveying parents and neuropsychologists on their experiences reading and writing …

Physiological, Ecological, And Microbial Factors Shaping Thermal Tolerance And Performance In Ectothermic Vertebrates, Jason Warren Dallas

Dissertations

Temperature represents a major driving force in biology as it influences essential functions across multiple levels of biological organization. The role of temperature is especially important for ectothermic animals, whose biotic processes are dependent on both body and environmental temperature. Assessing the relationship between temperature and organismal performance represents an important research direction as temperatures continue to warm under anthropogenic climate change. Chapters two and three are focused on a recently colonized population of the invasive Mediterranean House Geckos at the northern edge of their invasion front. These chapters examine the ecological and physiological factors that enable these lizards to …

“‘State Of War’: British Racial Construction, New World Slavery & The Impact Of Somerset’S Case In The Anglo-American Diaspora", John David Kemp

Dissertations

On Monday 22 June 1772, the English jurist William Murray, 1st Earl of Mansfield, delivered his oral verdict as Chief Justice of the Court of King’s Bench in the famous case involving the enslaved Afro-British servant James Somerset to declare that only an Act of Parliament could legalize domestic bondage and that Somerset was a free man. For the estimated 15,000 captives living in the English metropole, Somerset v. Stewart effectively undercut the Anglo-Atlantic slavocracy that had hid behind legal technicalities and extrajudicial decrees defending domestic bondage since the last quarter of the seventeenth century. In order to offer a …

The Aesthetics Of News: Narrative Construction And Media Illiteracy In Contemporary India, Shashidhar Nanjundaiah

Dissertations

Amidst the public’s declining trust in news, media prosumers—that is, media consumers who have also become producers of mediated texts—are not equipped with any credible alternative mechanism to better understand the world around them. Prior academic studies of news and its delivery have not adequately explored the ideological framework we need to confront this frightening situation. This dissertation does so. I problematize the narration of news as an aesthetic process. Such mass-mediated narration stitches together our world in ideological ways. A tidal flow of stories highlights and obscures selected truths in a frenzy of “new” news cycles, the frequency of …

Fat And Queer: A Qualitative Exploration Of Womens' Experiences Of Fatphobia, Jaidelynn Keeley Rogers

Dissertations

A paucity of psychological research exists on the topic of fatphobia, a type of pervasive oppression that occurs for people with plus-size, large, and/or fat bodies. Much of the research that exists about fatphobia focuses on medical ideals, the associated weight stigma, and how these are related to fat people’s physical health. Medical researchers have determined that weight stigma is actually more harmful to fat people's health than being fat. Fatphobia impacts women at disproportionate rates. Plus-sized, queer, lesbian, bisexual, and pansexual (LGBTQ+) women may be at a heightened risk for experiencing marinization as a result of their intersecting identities …

An Adaptive Deep Learning For Causal Inference Based On Support Points With High-Dimensional Data, Lynda Aouar

Dissertations

The Sample splitting method in semiparametric statistics could introduce inconsistency in inference and estimation. Thus, to make adaptive learning based on observational data and establish valid learning that helps in the estimation and inference of the parameters and hyperparameters using double machine learning, this study introduces an efficient sample splitting technique for causal inference in the semiparametric framework, in other words, the support points sample splitting( SPSS), a subsampling method based on the energy distance concept is employed for causal inference under double machine learning paradigm. This work is based on the idea that the support points sample splitting (SPSS) …

A Qualitative Case Study Into The Electronic Correspondence Between Fifth-Grade Students And Their College Mentors, Kevin Pribnow

Dissertations

The ability to navigate emerging technologies is necessary for social and economic participation in the world. Research shows that children from privileged households receive the support needed to develop digital literacy skills, while children from families with lower socioeconomic status do not receive this support. It is the responsibility of schools to address this participation gap by bringing digital literacies into classrooms. The affordances of new technologies make it easier than ever for teachers to provide authentic literacy experiences for their students. This qualitative case study examined an authentic, digital literacy experience during a virtual pen pal correspondence between fifth-grade …

Origin Of The Mega-Streamlined Morphology In Ne Africa And Arabia: Remote Sensing And Field-Based Investigations, Mohamed Samy Mohamed Elhebery

Dissertations

Mega-streamlined landforms on Earth and Mars have been attributed to aeolian, glaciogenic, fluvial, and tectonic processes. Identifying the forces that shaped these landforms is paramount for understanding landscape evolution and constraining paleo-climate models and ice sheet reconstructions. Exhumed Late Ordovician glacial deposits and landscape of the North Gondwana are reported here for the first time from SE Egypt. Using field and remote sensing (Advanced Land Observing Satellite [ALOS], Phased Array L-band Synthetic Aperture Radar (PALSAR) radar, multispectral Landsat TM datasets, and digital elevation models (DEMs) I mapped the distribution of the Late Ordovician glacial features (i.e. deposits and landforms) in …

Examining Attitudes Toward And Utilization Of Mental Health App(Lication)S For Mental Health Service Delivery Among Black, Indigenous, And People Of Color (Bipoc), Kalani A. Gates

Dissertations

The prevalence of mental health conditions among Americans has increased since the start of the COVID-19 pandemic. COVID-19 has been found to disproportionately affect communities of color and has contributed to elevated rates of mortality, morbidity, and mental illness. Black, Indigenous, and People of Color (BIPOC) are less likely to utilize or have access to conventional mental health services due to several access-related barriers including inadequate resources, cultural factors, lack of awareness and knowledge about mental health, mistrust of the health and mental health field and providers, and provider biases. Mental health applications (MHAs; software apps that delivery mental health …

Cancer-Related Cognitive Impairment: Examining The Perspectives Of Survivors And Speech-Language Pathologists, Patricia Lynn Geels

Dissertations

Scientific advancements have led to significant improvements in cancer treatment and increased survival rates. However, cancer survivors often experience long-term effects, including cognitive impairments known as cancer-related cognitive impairment (CRCI). CRCI is a common and distressing side effect that affects affected individuals’ quality of life. The discipline of speech-language pathology (SLP) is well-positioned to assess and treat CRCI. Still, there is a gap in determining the most effective support for cancer survivors with CRCI. This mixed methods, three-paper dissertation implements exploratory, cross-sectional survey design to examine how speech-language pathologists and survivors view CRCI symptoms, its impact on daily functioning, and …

Effects Of A Self-Forgiveness Intervention On Recovery From Substance Use Disorders, Michael Saltzman

Dissertations

Previous research has highlighted the relationship between shame, guilt, and problematic substance use (Gueta, 2013; Luoma et al., 2019; McGaffin et al., 2013; Rahim & Patton, 2015). Self-forgiveness has been associated with positive outcomes for individuals in recovery with substance use disorders (SUDs), though only one prior study has explored the effects of a selfforgiveness intervention for individuals in treatment (Scherer et al., 2011). This study examines the effects of a self-forgiveness intervention on state shame and guilt, state self-forgiveness, and drug avoidance self-efficacy, and it is the first intervention study to focus on self-forgiveness for individuals with SUDs receiving …

Visual Circuitry In Adaptive Behavior: Extraction Of Complex Visual Image Information By Arrays Of Non-Image Forming Eyes, Thomas Kipp Halladay Groves

Dissertations

A complete understanding of how neural circuitry underlies the detection and integration of visual cues continues to elude researchers in the 21st century. Since the dawn of life on earth, light has exerted enormous selective pressure on all living organisms. Visual systems represent one of the most common sensory systems in existence, with significant homologies among elements of these systems, such as photopigments and developmental genes. Offering nearly unmatched single cell access at all levels of its nervous system, the European medicinal leech (Hirudo spp.) is an excellent system in which to identify behaviorally relevant neuronal circuits. Hirudo evolved discrete …

A Review Of The Role Of Anxiety In Diagnosis Of Children And Adolescents With Autism Spectrum Disorder: A Paradigm Shift In Conceptualization And Diagnosis, Evan Wahlquist

Dissertations

Early evidence of co-occurring anxiety symptoms in children and adolescents with autism spectrum disorder (ASD) dates back to the first descriptions of ASD by Leo Kanner (1943) and Hans Asperger (Frith & Mira, 1992). While current research has identified anxiety disorders as one of the most prevalent co-occurring disorders in children and adolescents with ASD, little is known about the nature of the relationship between these disorders. In an effort to explain these high prevalence rates, recent research has started to investigate the relationship between these two disorders. To join these efforts, this clinical research project explored the role of …

The Role Of A Roman Catholic Organization In Undergraduate Student Psychosocial Development, Identity Formation And Graduation Rates, Jacob M. Larson

Dissertations

The mixed-methods study investigated the psychosocial development, identity formation, and academic persistence of undergraduate students involved in a Roman Catholic student organization at a private, non-sectarian university. The research framed members’ identity development in the context of Erik Erikson’s Psychosocial Development Theory and Chickering and Reisser’s Seven Vectors of Student Development. The qualitative research relied on interviews, a focus group, and field observations to gather data on members’ psychosocial and identity development. Regarding psychosocial development, participants discussed that the organization helped them develop meaningful, intimate relationships. Participants also highlighted that the organization helped them to develop intellectual competence, discover purpose …

Predictors Of Relational Aggression In Women Across Adulthood, Alison Poor

Dissertations

Relational aggression involves behavior intended to harm victims’ social status or reputation through acts like manipulation, gossip, exclusion, and blackmail. Most of the research on relational aggression has focused on children and early adolescents, with college students receiving some attention in recent years. A smaller body of work supports the relevance of relational aggression among adults in workplace settings, marital relationships, and assisted-living facilities. While few studies with adults have been integrated into the literature on relational aggression, they provide evidence that these behaviors continue into adulthood. The current study explored relational aggression among women between the ages of 18 …

The Effect Of Parceling On The Measurement Invariance Of Us Students’ Trends In International Mathematics And Science Study (Timss) 2015 Math Attitude Scores, Kritika Thapa

Dissertations

Measurement invariance is crucial for making valid comparisons across different groups (Kline, 2016; Vandenberg, 2002). To address the challenges associated with invariance testing such as large sample size requirements, the complexity of the model, etc., applied researchers have incorporated parcels. Parcels have been shown to alleviate skewness, improve reliability, reduce the number of indicators, and produce a more stable solution (Bandalos & Finney, 2001; Matsunaga et al., 2021; Nasser & Takahashi, 2003). Despite these benefits, limited methodological research has been conducted on the effects of parcels on tests of measurement invariance. This dissertation investigated the effects of different total sample …

The Relationship Between Colorado Teacher Salary And Colorado Teacher Turnover, Jason Lee Seybert

Dissertations

This secondary research study used quantitative research methods to gather and analyze statistical data on specific factors that have been demonstrated to impact teacher retention and assessed their relative importance in impacting teacher turnover. The data utilized for this study were peer-reviewed, publicly available, government data collected by the Colorado Department of Education. The time period examined in this study was the school years of 2015-2019. The study found teacher salary was a significant determinant of teacher retention in Colorado. When controlling for other potentially important factors, such as academic performance, English language learners, socioeconomic status, minority students, and setting …

Experiences Of Middle School Students With Visual Impairments Accessing Technologies In Inclusive Classrooms, Anitha Muthukumaran

Dissertations

As the educational environment is moving more towards a technology-rich system, students with visual impairments (VI) educated in general education classrooms must be guaranteed equitable access to content curricula. The purpose of this study was to understand the experiences of middle school students with VI when accessing and using technologies in general education classrooms. In this multiple case study, three middle school students with VI were observed in general education settings for two school days. In addition to the students, general education teachers and teachers of students with VI (TVI) also participated in the study to understand how best they …

Impact Of Coronavirus Disease 2019 On Secondary Market Ticket Price, Attendance Demand, And Fan’S Willingness To Pay: National Football League (Nfl), Yo Han Lee

Dissertations

This study explores how coronavirus disease 2019 (COVID-19) affected secondary market ticket prices, the number of attendees, and fans’ willingness to pay in the National Football League (NFL). The COVID-19 pandemic has significantly impacted the sport industry, affecting everything from the scheduling and delivery of games to the financial health of teams, leagues, and related businesses. One of the most visible impacts of the pandemic has been the suspension, delay, and cancellation of many sporting events, including entire seasons of some professional sport leagues. Sporting events require large gatherings of people in close proximity, which is precisely the opposite of …