Digital Commons Network^™

Identification And Quantification Of Novel Antimicrobials, Hazera Khatun Koly

Electronic Theses and Dissertations

No abstract provided.

Would Ai Stocks Estimate Be As Surprised To Usda Stocks Reports As Private Market Analysts?, Asif Mahmud Chowdhury

Electronic Theses and Dissertations

The USDA survey-based Quarterly Agriculture Stocks (QAS) reports are the primary source of information regarding the relative supply of U.S. corn, soybeans, and wheat for the last fifty years. Research has examined USDA stock reports and their relevancy to the market (e.g., Isengildina-Massa et al., 2021). In addition, private industry analysts estimate expected quarterly grain stock reports before USDA releases them. Market information firms such as Bloomberg and Reuters publish a subset of these estimates a few days before the USDA reports. Previous research has found that when industry analysts have significant differences in stock expectations compared to what the …

A Class Of Regression Models For Pairwise Comparisons Of Forensic Handwriting Comparison Systems, Cami M. Fuglsby

Electronic Theses and Dissertations

Handwriting analysis is a complex field largely living in forensic science and the legal realm. One task of a forensic document examiner (FDE) may be to determine the writer(s) of handwritten documents. Automated identification systems (AIS) were built to aid FDEs in their examinations. Part of the uses of these AIS (such as FISH[5] [7],WANDA [6], CEDAR-FOX [17], and FLASHID®2) are tomeasure features about a handwriting sample and to provide the user with a numeric value of the evidence. These systems use their own algorithms and definitions of features to quantify the writing and can be considered a black-box. The …

Removal Of Disinfection Byproducts In Drinking Water Using Biological Filtration, Peng Dai

Electronic Theses and Dissertations

Drinking water disinfection is essential to protecting public health from waterborne diseases. However, the reaction of disinfectants with natural organic matter (NOM) can form carcinogenic disinfection byproducts (DBPs). Drinking water treatment facilities employ precursor control and alternative disinfectants to minimize regulated DBPs formation to comply with Environmental Protection Agency (EPA) guidelines. Despite their efficacy, some limitations have been observed during the application, such as increased cost of enhanced coagulation, high demand for sludge disposal, inconsistency in precursor removal, and formation of more toxic unregulated and unknown DBPs. Therefore, it is important to develop more efficient and safe strategies for DBPs …

Genomics-Assisted Approaches To Improve Grain Yield And End-Use Quality In Hard Winter Wheat (Triticum Aestivum L.), Harsimardeep Singh Gill

Electronic Theses and Dissertations

Global wheat production needs to be increased by 60% to meet the future demand of feeding nine billion people by 2050. Simultaneously, it is important to improve the enduse quality to meet the requirements of producers, grain markets, processors, and consumers. Thus, the development of more productive wheat varieties with better enduse quality remains the primary focus for all wheat breeding programs. However, direct phenotypic selection for improving grain yield and end-use quality is difficult as it is highly influenced by environmental factors. This dissertation focuses on harnessing advancements in genomics applications, including genome-wide association studies (GWAS), for the genetic …

Application Of Crispr/Cas9 Whole Genome Screens To Advance Macrophage Biology, Kevin Wanniarachchi

Electronic Theses and Dissertations

Advances in CRISPR/Cas9 gene editing technologies present opportunities to better understand the contribution of individual genes to complex eukaryotic cellular processes. I have applied CRISPR whole genome screen technologies to inform further mechanistic understanding of macrophage fitness and neutral lipid metabolism. This work is important because macrophages play critical roles in immune function and are implicated as causative agents in disease states. Chapter One of this dissertation provides insights into how CRISPR genome screening technologies have improved biological discovery and key findings from their application and discusses how this technology can be implemented to advance the discovery of novel macrophage …

Teachers’ Perceptions About The Transition To English (T2e) Program In Bridging The Literacy Gap At The Elementary Level, Hilda Sarfo

Electronic Theses and Dissertations

This study delves into the perceptions of Ghanaian teachers regarding the effectiveness of the bilingual literacy program – Transition to English (T2E) – in addressing the literacy gap at the elementary level. Recognizing the significance of second language acquisition for early-grade learners in multilingual communities, the research focuses on investigating the expectations and sustainability of the program. The study involved in-depth interviews with 11 Ghanaian teachers from three public basic schools who have experience with the T2E and one private school who has no experience. The findings of the study confirmed the pivotal role of the T2E in supporting young …

Embracing Green Chile: An Exploratory Factor Analysis Of Community Cultural Wealth, Lynda Duran

Electronic Theses and Dissertations

Higher education trends marginalize Students of Color by promoting assimilation into a dominant culture. Faculty and practitioners in higher education deepen cultural dissociation by dismissing the cultural knowledge that many Students of Color hold from family and community. Following in the footsteps of settler colonialism, these practices uphold a deficit framing of Students of Color as inferior to their white peers. This dissertation blends the power of the Community Cultural Wealth model (Yosso, 2005) and QuantCrit (García et al, 2018; Gillborn et al., 2018) to define a Green Chile Epistemology that weaves cultural capital into the higher education experience. In …

Student Perceptions Of Social Media In The Admissions Process, Skiler Ashley Jones

Electronic Theses and Dissertations

The purpose of this qualitative study was to understand how prospective first-time-in-college minority students from a university in the southwestern part of the United States use social media to make decisions about matriculating at a 4-year public university. Data were collected through semistructured interviews with five students and two staff members. Social media accounts of the Office of Admissions and the general university social media accounts were reviewed for content. Existing research pointed to the top factors influencing students’ decision-making process when deciding where to attend college. The top reasons included cost of tuition and how connected students feel to …

Exploring Disparities In Prenatal Smoking And The Role Of Adverse Childhood Experiences, Patricia Da Rosa

Electronic Theses and Dissertations

Cigarette smoking is the most common cause of premature death, killing half of its users. During pregnancy, smoking continues to be the leading cause of premature death for both mothers and newborns. Research has consistently demonstrated smoking is not randomly distributed across populations; it is, instead, socially patterned. Women from lower socioeconomic backgrounds, those experiencing mental health issues, and rural area residents are disproportionately affected. The life course framework emphasizes the impact of exposures in early life on shaping health inequities. Eliminating health inequities, including risky behaviors such as smoking, requires an understanding of the pathways that generate these inequities. …

Cytotoxicity Profiling And Apoptotic Potential Of Carboxylic Acids-Based Deep Eutectic Solvents On Mammalian Cell Lines, Mavis Korankye

Electronic Theses and Dissertations

In the past few years, there has been a notable surge in demand for high-purity medicines due to the prevalence of chronic diseases such as cancer, hypertension, diabetes, cardiovascular diseases, and neurological disorders. Considerable efforts have been dedicated to discovering new solvents that are environmentally friendly and cost-effective that are well-suited for industrial applications. Deep eutectic solvents have gained recognition as a highly promising alternative to organic solvents and ionic liquids due to their easily sourced raw materials, simple and cheap preparation methods, high tunability, low volatility, low toxicity, and biodegradability. The industrial utilization of deep eutectic solvents (DESs) is …

Control Of Persistent Environmental Listeria Monocytogenes Using Phenotypic And Genomic Approaches, Bhaswati Chowdhury

Electronic Theses and Dissertations

No abstract provided.

Indigenous Toxin Affects Cell Viability, While An Artificial Proteolytic Queueing Causes The Upregulation Of Specific Genes, Mohammed Salahuddin

Electronic Theses and Dissertations

Studying bacterial physiology is crucial to understand the fundamental mechanisms that govern bacterial growth, survival, and adaptation. This thesis combines two chapters investigating bacterial physiology by studying important cellular processes like bacterial toxin-antitoxin systems and proteolytic pathways. The first chapter involves studying bacterial toxin-antitoxin systems to understand the regulation and function of hypothetical toxin-antitoxin (TA) systems of bacteria and the effects of these TA systems on bacterial growth and survival. The emergence of these genetic modules in bacterial research and the unrevealing of some of their important roles in cell physiology in recent years has drawn much attention in scientific …

Evaluation Of Welded And Polished Stainless-Steel Surfaces In Supporting Sporeformer Biofilms In Dairy Plants, Taghreed Almalki

Electronic Theses and Dissertations

No abstract provided.

Fusarium Head Blight Resistance Assessment In Barley, Tasneem Fathima

Electronic Theses and Dissertations

Fusarium head blight (FHB), commonly called scab is the most devastating disease of wheat and barley caused by the ascomycete fungus, Fusarium graminearum. FHB affects both the quality and quantity of cereal grains affecting the supply chain of the food and feed industry and the marketability of the produce. Barley (Hordeum vulgare L.) is among the several crop species most vulnerable to FHB infection. An estimated 25% of Spring barley grain production in the United States is used to make malted beverages such as beer. Malting barley is a relatively high-value crop with high demands regarding grain quality. FHB directly …

Effect Of Foliar And Preplant Sulfur Application On Soybean Nutrient Uptake, Yield, And Seed Protein And Oil Content, Gena Ram Mahato

Electronic Theses and Dissertations

In recent years, Sulfur (S) deficiency has been observed in soybean producing regions in the US and different parts of the world. The major factors behind the frequent occurrence of S deficiency are reduced atmospheric S deposition due to strict regulations on emissions from fossil fuels, large S removal from high yielding crops, less use of fertilizers containing S, and intensive cultivation practices. To test S limitations, I conducted two independent studies from 2019 to 2021 at two locations in Eastern South Dakota to determine the effect of foliar and preplant S application on soybean. The objectives of this research …

Regional Assessment Of Live Cattle And Carcass Characteristics In The Northern Plains, Harlee A. Brauckmuller

Electronic Theses and Dissertations

The goal of this project was to perform a regional assessment of live cattle and carcass characteristics in the northern plains. The assessment audited three packing plants to assess fed cattle, cow, and bull production. The live animal factors evaluated were transportation, mobility of cattle, identification, brands, and mud/manure present. Data collected during the slaughter process was bruising, dentition, and offal condemnations. In fed cattle yield grade, quality grade, and hot carcass weight were assessed. In cows and bulls muscle score and fat color score were assessed. To assess differences between cattle in the Northern Plains and cattle in the …

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 …

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 …

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 …

Technological Content Knowledge And Technological Pedagogical Knowledge In Secondary Science Teachers: A Mixed Methods Analysis, Stefanie Graban

Electronic Theses and Dissertations

Teachers in K-12 education are increasingly using technology in their courses. However, teachers may struggle to implement technology effectively in their specific subject areas. Existing research demonstrates that there was a need to better support in-service science teachers’ technological content knowledge. Accordingly, the purpose of this practitioner research study was to examine how, why, and to what extent in-service secondary science teachers report using technology as part of instructional practices. The TPACK framework was used as the theoretical lens for a mixed methods study exploring secondary science teachers’ technological pedagogical knowledge (TPK) and technological content knowledge (TCK). Multiple data sources …

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 …

Digital Historians: Engaging Students In Historical Thinking Through An Interactive Website, Casey O'Donnell-Chavis

Electronic Theses and Dissertations

The purpose of this study was to determine the extent to which students engage in historical thinking through the use of an interactive website, and how the students understood and experienced its various features and how they incorporated technology in their final video project. In the spring of 2022, five students participated in a class workshop focused on historical thinking using their Chromebooks. Following a week of learning about the five elements of historical thinking, students were asked to create a multimedia final video project on a historical figure of their choice. Two students completed the assignment. Thematic coding analysis …

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 …

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 …

Synchronous Virtual K-12 Teachers' Use Of Multimedia Principles In Electronic Slide Design, Lisa Beaulieu

Electronic Theses and Dissertations

Hundreds of thousands of K-12 children in the United States are enrolled in online K-12 virtual schools that consistently report poor academic outcomes. There is a need to assess how well instructors in a synchronous online environment present new material to learners in a way that best aligns with how the brain manages and integrates new information into long-term memory. Online K-12 teachers use PowerPoint to design Electronic Slide Presentation (ESP) decks, which are used as their main form of instruction with their students during synchronous classes. The Cognitive Theory of Multimedia Learning (CTML) provides a set of principles which …

Integrated Marketing Communication As A Discourse: A Problem With Integration, Rana Ramadan

Electronic Theses and Dissertations

Integrated Marketing Communication as a Discourse: A Problem with Integration examines integration within Integrated Marketing Communication (IMC) scholarship in light of Jürgen Habermas’s discourse ethics and related communication ethics literature. Integration is a notion with dual meanings: one is technical, and the other philosophical. Technical integration is a perception management strategy that has been received as the competitive advantage for marketing communication for decades. Habermas’s philosophical/social integration is a communicative act that transmits culturally stored knowledge. It contextualizes norms in an appropriate theoretical framework, and it controls behaviors and personality structures. At the heart of IMC theory is an ambition …

Feel My Story: An Interpretative Phenomenological Analysis Of Latinx Counselors-In-Training Experiences With Psychological Safety, Felishatee Rodriguez

Electronic Theses and Dissertations

An interpretative phenomenological analysis (IPA) was used in the current study to examine how Latinx counselors-in-training (CITs) define and experience psychological safety in their classroom environments while enrolled in CACREP-accredited master’s degree programs in the United States. In the present study, IPA was employed to make sense of the participants’ detailed narratives and discover how Latinx CITs interpreted and made meaning of their experiences with psychological safety in classroom environments. Serving as the theoretical framework, Latino Critical Theory was used to weave together and validate the cultural components of Latinx CITs’ accounts as they orchestrated themselves through their CACREP-accredited master’s …