Digital Commons Network^™

Biological Control Of Bacterial Leaf Streak Of Wheat Using Antagonistic Rhizobacteria, Ashley Frederickson

Electronic Theses and Dissertations

Wheat (Triticum aestivum L.) is one of the world’s most valuable crops, and the primary food grain produced in the United States. A major disease in wheat production is Bacterial Leaf Streak (BLS) caused by the gram-negative bacterium Xanthomonas translucens pv. undulosa (Xtu). Very few management strategies are available to growers to manage this disease, as common chemicals do not provide adequate control. A number of studies have been conducted on biological control using Rhizospheric bacteria for the control of various plant diseases, but limited data is available on the efficacy of biological control using Rhizospheric bacteria for controlling Bacterial …

Unveiling Race Diversity And Fungicide Sensitivity Profiles Of Pyrenophora Tritici Repentis Populations In South Dakota Collected From 2021-2023, Jaswinder Kaur

Electronic Theses and Dissertations

Tan spot, a foliar disease of wheat caused by the ascomycetes fungus Pyrenophora tritici repentis (Ptr), poses a significant threat to wheat crops globally. The disease gained economic importance in the late 1970s due to shifts in farming practices, such as minimal tillage and planting on crop residues, providing favorable conditions for the pathogen to overwinter and cause infections. Ptr is classified into eight races based on the production of necrotrophic effectors—Ptr ToxA (necrosis-inducing), Ptr ToxB, and Ptr ToxC (chlorosis-inducing on respective susceptible and sensitive cultivars)—resulting in distinct symptoms on susceptible wheat differentials. The inverse gene-for-gene hypothesis of Ptr suggests …

Electrochemical Innovations: Advancements In Lithium Metal Batteries & Supercapacitor For Energy Storage, Jyotshna Pokharel

Electronic Theses and Dissertations

Constructing an artificial solid electrolyte interphase (SEI) on lithium metal electrode is a promising approach to address the rampant growth of dangerous lithium morphologies (dendritic and dead Li0) and low Coulombic efficiency that plague development of lithium metal batteries. But it is not known how the Li+ transfer behavior in the SEI is coupled with mechanical properties. We demonstrate here a facile and scalable solution-processed approach to form a Li3N-rich SEI with a phase-pure crystalline structure that minimizes the diffusion energy barrier of Li+ across the SEI. Compared with a polycrystalline Li3N SEI obtained from conventional approaches, our phase-pure/single crystalline …

Higher Education’S Effect On Retention: Exploring The Experiences Of Cps Caseworkers, Alisa S. Wright

Electronic Theses and Dissertations

This qualitative research study was an exploration of Child Protective Services (CPS) frontline caseworkers' experiences. The problem investigated was the high number of caseworkers who lacked the knowledge and skills necessary to do their job and the constant turnover of workers within the agency. Although previous researchers have explored many factors that cause caseworker turnover, the research has not focused much on the caseworkers’ perspective. Therefore, this qualitative study explored CPS caseworkers’ opinions and experiences using virtual semistructured interviews. The study specifically focused on the impact that education and training has on job performance and turnover. The study population was …

Perceptions Of Organizational Politics And Interpersonal Relationships In Black Women's Organizations And Sororities, Mitzi S. Willis

Electronic Theses and Dissertations

Although much research has addressed the relationships between leaders and followers, none has focused on these relationships between Black women—specifically, in the context of Black women’s social service organizations and sororities—and the impact the leader’s chosen style of leadership has on the followers’ use of voice. Self silencing is a prominent response to the power dynamic in many leader–follower relationships. The purpose of this study was to describe the interactions between leaders and followers in Black women’s social service organizations and sororities and identify the influence leadership style has on follower engagement. This study extends the application of silencing the …

Advancement Via Individual Determination And Its Impact On The Academic Achievement Of African American Male Students, Christerpher L. Turner

Electronic Theses and Dissertations

The purpose of this study was to evaluate the effectiveness of the Advancement Via Individual Determination (AVID) program and its impact on the academic achievement of African American and White male students. A causal-comparative quantitative design was used as the methodology for this study. For this study, the academic achievement of AVID and non-AVID African American and White male students was measured by comparing their Algebra 1 scores. The sample included data from approximately 550 African American and White male high school students in a suburban school district in Texas. Student achievement data were collected and analyzed using a statistical …

Study Abroad And The Global Public Good: A Developmental Evaluation Of The International Business Major, Sara Barbier Bularzik

Electronic Theses and Dissertations

Study abroad, for any length of time and in any location, is widely recognized in higher education as a positive educational activity. While individual benefits of study abroad have been explored for decades, recent research has pushed the field to consider benefits for the local and global community. This program evaluation contributes to this line of inquiry by asking international business majors about the influences on their study abroad program choice process and the involvement of the university’s mission to positively impact the public good. Using developmental program evaluation and UNESCO’s global citizenship education theory, this study found that students …

Culture Care Values And Beliefs Of Puerto Rican Adults Related To Suicide: An Ethnonursing Study, Griselle Estrada

Electronic Theses and Dissertations

BACKGROUND: Suicide is a public health issue among the growing U.S. Latinx population; however, Latinx subgroups are diverse and represent different cultural backgrounds. Puerto Ricans are the second largest Latinx subgroup in the nation. Although research points to possible mental health vulnerabilities among Puerto Ricans when compared to other Latinx subgroups, there is a dearth of research exploring cultural influences that can impact suicide prevention efforts for Puerto Ricans living in the U.S. mainland. AIMS: This study aimed to explore the culture care values, beliefs, and needs of Puerto Rican adults pertaining to suicide and its prevention. METHODS: The …

An Assessment Of Improvement Challenges & Lessons Learned From Feeding Students Of A Large Urban School District During The Covid-19 Pandemic, Jamar King

Electronic Theses and Dissertations

This qualitative dissertation study took place in the midst of the COVID-19 pandemic. The purpose of this study was to examine the work of school food service professionals as this has implications for all school food service staff. Specifically, this study focused on the role of the cafeteria managers, through their practices, beliefs, the support needed, and challenges they faced during a complicated reality of meeting student needs, and to contribute to the improvement practices in school food service for future emergencies. The research questions, methods, and data analysis are framed using the first three principles of Improvement Science described …

Adaptive Microlearning: An Empirical Study Among The Students In The Rural Areas Of China, Jingwei Liu

Electronic Theses and Dissertations

Through multiple educational reforms, China has pursued developing well-rounded learners with solid content knowledge, higher-order thinking skills, and the ability to transfer knowledge to real-world problem spaces. The imbalance of learning resources between urban and rural China, however, has caused disadvantages for learners in rural China to gain access to quality educational opportunities necessary for becoming well-rounded learners. Luckily, the quickly growing Internet service coverage in rural China makes educational interventions possible. Online intervention aiming for many qualities of well-rounded learners, such as deeper learning, is particularly promising.

The purpose of this study was to investigate the potential of adaptive …

Assessments Of Water Chemistry And Fish Community Structure In The Buffalo Creek Watershed, Tributary To The Allegheny River In Armstrong And Butler Counties, Pennsylvania, Kathleen Wilson

Electronic Theses and Dissertations

The Buffalo Creek watershed has experienced water quality impairments for various reasons, including but not limited to, agricultural influence, abandoned mine drainage (AMD), on-site wastewater malfunction, and stormwater. The source and cause of the most prevalent impaired areas remains unknown. The goal of this study was to analyze water chemistry using state water quality standards and mass ratio analysis, then to conduct fish community analysis. We found toxic metal pollution across the watershed, with iron, cadmium, copper, and selenium frequently exceeding criteria. We determined which streams are polluted by resource extraction activities by conducting mass ratio analysis. We found conventional …

The Health And Health Care Needs And Experiences Of Mexican Heritage Individuals In A Nonmetro Location: An Ethnonursing Study, Karla Adu

Electronic Theses and Dissertations

Introduction: The population of Mexican heritage individuals has grown significantly in nonmetro, emerging communities. The purpose of this study was to explore the health and health care needs and experiences of this population in the Midwest. Methods: Leininger’s Culture Care Theory and Ethnonursing Research Methods were used as the guiding theory and methodology for the qualitative study. Interviews were conducted with 27 informants. Recordings were transcribed and analyzed according to Leininger’s phases of data analysis. Results: Three themes emerged from the data: 1. living a better life in a nonmetro community with and for family, 2. barriers to understanding …

Revelations In The Blood: Determination Of Biomarkers And Analytes, Jeremiah Jamrom

Electronic Theses and Dissertations

Changes in body chemistry have long been utilized as a tool for medical diagnosis. Whether blood panel, toxin level, antigen testing or any of the myriad other tests performed annually, searching for molecules which confer health status is a long-established practice. These tests give physicians more information and allow them to make a more accurate diagnosis, from which appropriate treatment can stem. Awareness of, and the subsequent search for, biomarkers for disease states have grown substantially in the past years as analytical, biochemical, and instrumental techniques have become more precises and powerful. In an era of increasingly personalized medicine, novel …

Speciated Isotope Dilution Mass Spectrometry In Combination With Thor’S Hammer Metaspike Technology For The Assessment Of Low-Level Biomarkers For Human Health Evaluation, Ashley Ebert

Electronic Theses and Dissertations

Our research team has been focused on quantifying important biological analytes in human blood samples to delineate the biochemical processes underlying certain states of dysfunction and evaluate treatment efficacy. These efforts have been guided by laboratory measurements with the input of medical experts. Speciated isotope dilution mass spectrometry (SIDMS) explained in detail in EPA Method 6800 has been successfully applied in the quantification of an important biomarker analyte for immune function and detoxification processes: glutathione. Past research has proven the molecule a biomarker for autism spectrum disorder (ASD) in the form of the reduced/oxidized glutathione (GSH/GSSG) ratio, and literature has …

Empowering Lung Cancer Survivors In Post-Treatment Survivorship Care Using Participatory Action Research, Kelly Filchner

Electronic Theses and Dissertations

Purpose: To explore the experiences of lung cancer survivors (LCS) and their informal and professional caregivers with post-treatment care and to empower them to implement action-based study findings.

Participants & Setting: Participants were recruited using purposeful and snowball sampling from an NCI-designated cancer center in Northeastern US.

Methodological Approach: This study used a participatory action research (PAR) four-phase design. Phase one was a focused ethnography; phase two utilized a core group of participants to decide an action to be implemented in phase three; and phase four evaluated the action for the completion of one PAR cycle.

Findings: Twenty-eight categories, eight …

The Ethical Imperative Of Inclusion In Healthcare Innovation: Scaling And Sustaining Digital Health Equity, Lukas E. Chandler

Electronic Theses and Dissertations

The COVID-19 pandemic revealed the harm of digital health exclusion. Excluded groups could not benefit from virtual care due to device access gaps, broadband connectivity, and digital and language literacy levels. A lack of engagement with historically excluded populations in digital health innovation is an ethical harm and a maleficent form of social exclusion. Digital tools in healthcare delivery represent more than just a strategy for promoting health equity; they signify an opportunity to address health inequities in the health technology design process.

The historical focus of healthcare ethics on bedside decision-making issues largely explains why the field lacks concerted …

The Relationship Between Urban Green Space Perception And Use Within The Adolescent Population: A Focused Ethnography, Rachel Lyons

Electronic Theses and Dissertations

Introduction: Greenspace is beneficial for improving adolescent mental health, yet we still do not understand the connection between the built environment and subjective mental wellbeing. We also lack understanding of how this population uses greenspace and how they feel when in it. Purpose: The purpose of this qualitative study was threefold: to understand why adolescents use greenspace, to identify how they use greenspace, and to explore how they feel when they are in greenspace. Methods: participated in a focused ethnography that utilized auto photography for photo elicitation. Braun and Clark's (2006), six phases of thematic analysis were used to guide …

A Qualitative Study Into Modern Psychoanalytic Joining And Mirroring Through Psychotherapeutic Exchanges, Tricia Shihui Wang

Electronic Theses and Dissertations

This dissertation intends to address current deficits in knowledge regarding the modern psychoanalytic interventions of joining and mirroring, including substantial definition issues in the literature and the absence of current writings on the psychotherapeutic interventions of joining and mirroring in practice. The focus of the study was on the ever-dynamic landscape between modern analytically-informed practitioners and their clients in psychotherapeutic exchange(s) that the practitioners believed encompassed joining and/or mirroring interventions. Participants were six experienced practitioners who described their clinical work as being informed by modern psychoanalysis and who have engaged or were currently engaging in individual psychotherapy with a client. …

Quantum Computations And Molecular Dynamics Simulations: From The Fundamentals Of Antimicrobial Resistance To Neurological Diseases, Angel Tamez

Electronic Theses and Dissertations

Biophysical phenomena are modeled using a combination of quantum and classical methods to interpret and supplement three distinct and diverse problems in this dissertation. In the first project, decarboxylation reactions are ubiquitous across chemical and biological disciplines, yet the origin of non-catalytic solvent effects remains elusive. Specific solvent structure and energetics have not been well described for the monoanion of malonate, nor corrected from the gas-phase charge-assisted intramolecular hydrogen bond model known as “pseudochair”. In the aqueous phase, a low-lying energy conformer known as the “orthogonal conformation” is computed to be preferred by a three-water cluster of hydrogen bonding over …

Examining The Effects Of An Early Mand Training Intervention On Mand Acquisition In Children With Autism Spectrum Disorder (Asd), Maram Alnahari

Electronic Theses and Dissertations

Children with autism spectrum disorder (ASD) often show language delays. Their limited communication skill may lead them to engage in the same disruptive behavior that previously got them what they wanted. Verbal behavior (VB), specifically mand training (MT), is one of the early language intervention strategies used to target language development and facilitate functional communication with young children with autism. This study aimed to examine the effectiveness of an early mand training intervention on mand acquisition in children with ASD. This study specifically targeted the application, the implementation, and their effects. A multiple baseline across participants research design was used …

Redefining Safety: A Reproductive Justice Ethics Of Care Approach To Maternal Health, Elizabeth Balskus

Electronic Theses and Dissertations

This dissertation will argue for the adoption of a multi-dimensional concept of safety in healthcare to include emotional, psychological and communal health. It will then illustrate how this concept of safety is foundational to a dignity-enhancing ethics of care approach that finds its normative grounding in Reproductive Justice and human capabilities, given that both patient and provider need to feel safe in order to fully engage in a dialogical-interpretive process of care and that caring efforts must strive to be equitable on both interpersonal and structural levels. This framework will then be applied to maternal health, showing how an approach …

Comparing The Effectiveness Of Traditional Taped-Problems Intervention With A Remote Delivery Version For Increasing Math Fact Fluency, Cortney Chelecki

Electronic Theses and Dissertations

The knowledge of math fact fluency skills is crucial for children to develop both related and subsequent necessary math skills. Students require fluency in basic math facts in order to successfully understand and perform more complicated math problems. Research has shown that students demonstrating math skill deficits are likely to have limited cognitive capacity to devote to higher math tasks, and also suffer from math-related anxiety, a lack of engagement, and limited vocational and career opportunities (Delli Sante et al., 2001; Gersten & Chard, 1999; Parkhurst et al., 2010; Poncy et al., 2007; Riconscente, 2013). During the COVID-19 pandemic, all …

Facial Expression Recognition Deficits In Autism Spectrum Disorder, Zachary Friedman

Electronic Theses and Dissertations

Autism Spectrum Disorders (ASD) are an umbrella term for lifelong neurobehavioral disorders characterized by a set of social (verbal and nonverbal) communication challenges and behaviors and restricted, repetitive behaviors. Emotions serve many functions, but primarily they help with the appraisal of stimuli and driving of responses. Emotional processing and facial recognition are integral abilities that influence the acquisition of social skills. For individuals with ASD, it is hypothesized that facial recognition deficits contribute to social communication traits. The bulk of previously conducted research has utilized static images of facial expressions. This study utilized videos of spontaneous expressions. Participants were tasked …

Tabletop Role-Playing Games As Autism Psychotherapy: A Video-Cued Multivocal Clinical Ethnography, Adina Rubin-Budick

Electronic Theses and Dissertations

This qualitative study is a video-cued multivocal ethnography that analyzed the clinical reasoning and perspectives of psychotherapists using Tabletop Role-Playing Games (TRPG) as a therapeutic treatment for children and adolescents diagnosed with Autism Spectrum conditions. With a growing number of TRPG therapists nationwide using this modality in their clinical practices, this study aimed to develop a clearer understanding of the ways in which their therapeutic orientation, gaming practices, and knowledge of Autism Spectrum Conditions informs their use of TRPG psychotherapy with Autistic clients.

Research that focuses on clinical decision-making and the knowledge that informs clinical interventions and technique generally refers …

Examining The Impact Of The Covid-19 Pandemic On Violent Crime In The City Of Pittsburgh, Brittany Urban

Electronic Theses and Dissertations

The goal of this research is to examine patterns of Part I crimes [including Part I Person/Violent: Homicide, Rape, Aggravated Assault, and Robbery, and Part I Property: Burglary, Larceny-Theft, Motor Vehicle Theft, and Arson, as defined by the Federal Bureau of Investigation (FBI) Uniform Crime Reporting (UCR) Standards] in The City of Pittsburgh, framing the COVID-19 pandemic as a major stressor that Robert Agnew’s General Strain Theory suggests may lead to increased opportunity for crime, due to the perceived unjustness of the associated lockdown orders and potential incentive for criminal coping (Agnew 1992). This descriptive analysis is based primarily upon …

The Impact Of Antecedent Physical Exercises On Increasing On-Task Behaviors And Decreasing Restricted And Repetitive Behaviors In Elementary Students With High Functioning Autism Spectrum Disorder In Saudi Arabia, Shadi Albadawi

Electronic Theses and Dissertations

Physical exercises (PEs) are one of the most used approaches by researchers to treat restricted and repetitive behaviors (RRBs) and enhance on-task behaviors in students with high-functioning Autism spectrum disorders (ASD). Although PEs is recognized as Evidence-based Practices (EBPs) for students with ASD in the United States of America (USA) that are based on moderate evidence, it is important to conduct more empirical studies to explore its effects on individuals with ASD from different populations in the KSA. The current study used a single-subject, multiple baseline design across subjects to examine the effect of antecedent structured physical exercises (teaching soccer …

Person-Centred Care And Health Justice In A Multicultural World: Holistic Perspectives From Context, Care, And Capabilities, Asmat Ara Islam

Electronic Theses and Dissertations

Medical ethicists debate whether “one-approach-fits-all” is specifically a problem for disease-oriented paradigms. In developed countries, health systems have adopted limited person-centred care (PCC) paradigms, most of which focus only on patient autonomy. However, these models neither adequately respond to a nexus of relevant aspects, including patients’ vulnerability, needs, and capabilities, nor provide adequate justification that PCC is related to social justice. The central question of this dissertation is: how does a PCC framework that is based on the capabilities approach justify a shift in the current health system toward PCC so that health systems can address health injustices in a …

Distribution And Soil Characteristics Associated With The Neches River Rose-Mallow (Hibiscus Dasycalyx), Morgan E. Langlinais

Electronic Theses and Dissertations

The Neches River rose-mallow, Hibiscus dasycalyx, is a rare herbaceous perennial endemic to East Texas. The threatened, obligate wetland species is currently at risk of being lost in the wild due to habitat loss, encroachment of nonnative and native plant species, and hybridization with two other Hibiscus congeners, Hibiscus laevis and Hibiscus moscheutos. Known locations of each of the three Hibiscus species were used to measure select soil characteristics and habitat variables associated with each of the rose-mallows. H. dasycalyx was concluded to be associated with more fertile soils and slightly more canopy coverage than H. laevis and …

Microplastic Accumulation In The Digestive Tract Of Young-Of-Year Atlantic Sharpnose Sharks (Rhizoprionodon Terraenovae) In The Grand Strand, Sc, Andrew Curtis Sitlinger

Electronic Theses and Dissertations

This study focused on the presence and accumulation of microplastic fibers in the digestive tract and livers of young-of-year Atlantic Sharpnose Sharks (Rhizopriondon terraenovae) from two sampling locations along the Grand Strand of South Carolina. R. terraenovae is a small, mesopredatory elasmobranch found abundantly along northwestern Atlantic Ocean coastlines. Thirty specimens of R. terraenovae were collected from May through August of 2020. Microplastics were found in all specimens. A total of 672 plastic particles were identified over the course of the study, with an average of 22.4 ± 10.5 (SD) plastics per specimen. The majority of the plastics were classified …

Silting Dynamics And Metal Contaminants In The Georgetown Inner Harbor, Ezekiel Wil Meyers

Electronic Theses and Dissertations

The Georgetown inner harbor is an abandoned oxbow-like river loop and a vital historic site with a wealth of traditional businesses and heavy local industry located within Winyah Bay. Since the modification of the Sampit River in 1949, chronic rapid silting has plagued the inner harbor. With these substantial amounts of fine-grained material accumulating inside the inner harbor, business operations along the waterfront, navigational and maritime operations, and contamination within the harbor are of major concern. The goals of this study were to (a) understand the silting dynamics inside the inner harbor, (b) identify heavy metals which might be of …