Digital Commons Network^™

Validation Of Expanded Trend-To-Trend Cross-Calibration Technique And Its Application To Global Scale, Ramita Shah

Electronic Theses and Dissertations

The expanded Trend-to-Trend (T2T) cross-calibration technique has the potential to calibrate two sensors in much less time and provides trends on daily assessment basis. The trend obtained from the expanded technique aids in evaluating the differences between satellite sensors. Therefore, this technique was validated with several trusted cross-calibration techniques to evaluate its accuracy. Initially, the expanded T2T technique was validated with three independent RadcaTS RRV, DIMITRI-PICS, and APICS models, and results show a 1% average difference with other models over all bands. Further, this technique was validated with other SDSU techniques to calibrate the newly launched satellite Landsat 9 with …

Development And Assessment Of Gamified Process-Oriented Guided Inquiry Learning Activities In Undergraduate Large Lecture Chemistry Courses, Nathan Turner

Electronic Theses and Dissertations

Students who take general chemistry and do not perform well are more likely to pursue an alternative degree or remove themselves from STEM curriculum entirely. Poor academic performance and high student attrition rates in general chemistry courses have resulted in the perception of chemistry courses being gatekeepers for students in pursuit of STEM degrees. Process-Oriented Guided Inquiry Learning (POGIL) has shown promising results in both lecture and laboratory teaching on student performance in chemistry while gamification has been used to enhance student learning experiences to help students grasp chemistry concepts. The current project blends two student-centered approaches, gamification and POGIL, …

Methods For Improving Potassium Fertilizer Recommendations For Corn In South Dakota, Andrew J. Ahlersmeyer

Electronic Theses and Dissertations

Corn (Zea mays L.) is a vital commodity in South Dakota’s agricultural sector. Optimal corn production occurs when there are sufficient mineral nutrients in the soil, especially potassium (K). Applications of K fertilizer are used when soil test K (STK) levels are deficient. Therefore, producers need reliable, thoroughly tested fertilizer recommendations to make profitable decisions and maintain environmental stewardship. South Dakota K fertilizer recommendations have not been updated in nearly 20 years. Simultaneously, changes in corn genetics, management practices, and climate patterns suggest that the critical soil test value (CSTV) for STK may have shifted in that same time frame. …

U.S. Consumers’ Willingness To Pay For Raised Carbon-Friendly Beef: Moderation Effect Of Information And Consumer Characteristics, Mariam Ishaq

Electronic Theses and Dissertations

No abstract provided.

Development Of Corn Kernel-Based Biocomposite Films For Food Packaging Applications, Swastika Bera

Electronic Theses and Dissertations

Most of the current and active food packaging resources and methods are nonbiodegradable and nonrenewable therefore harmful to the environment. Due to this, alternate sources of food packaging materials are in high demand. In this study, a bio-composite film has been developed, with Corn kernel powder as fiber reinforcement which is mixed with gelatin, and lignin two biopolymers as the matrix. The effect of Corn Kernel (CK) reinforcement on the Gelatin/Lignin (G/L) matrix on mechanical and barrier properties has been studied. CK has shown great potential as reinforcement to natural polymer, gelatin, and lignin (G/L) for food packaging applications as …

Effects Of Dietary Genistein And Fugacity Modelling In An Aquaculture System, Travis Schaeffer

Electronic Theses and Dissertations

Fish production from aquaculture has continued to grow over the past several decades, with finfishes being fed formulated, fish meal-based diets supporting most of that industry’s growth. However, increased demand and costs, coupled with static volume and erratic supplies of fish meal, has resulted in the use of alternative plant-derived protein sources. A common oilseed protein source is soybean meal (SBM), because of its protein content and amino acid profile; however, it also contains multiple anti-nutritional factors, including phytoestrogens. Phytoestrogens are naturally produced, estrogenmimicking compounds, with isoflavones receiving the most investigation as higher levels of these compounds occur within SBM. …

Initial Procedure For Small-Scale Extraction Of Subsurface Martian Ice, Evan Steers

Electronic Theses and Dissertations

For decades, NASA has been surveying the surface of Mars with plans for human exploration. Due to recent advancements, there is strong evidence to believe that frozen aquifers beneath the Martian surface hold great amounts of usable H2O. Since the discovery of water on Mars, NASA has expressed key interest in harvesting this valuable resource. The presence of usable H2O on Mars could reduce the launching mass of future missions by giving astronauts the capability to harvest water once they have landed on Mars. This research focuses on the optimization of a current design to extract Martian water and the …

Identification And Quantification Of Novel Antimicrobials, Hazera Khatun Koly

Electronic Theses and Dissertations

No abstract provided.

Computer Vision/Ai To Better Understand The Performance Of Agricultural Sprayer Nozzles, Praneel Acharya

Electronic Theses and Dissertations

No abstract provided.

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 …

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 …

Latino And/Or Hispanic Male Leaders In Community Colleges In Texas: A Narrative Study, Estrella Barrera

Electronic Theses and Dissertations

This study aimed to understand the factors influencing the leadership development of Latino and/or Hispanic male leaders serving in Texas community colleges. As the Latino and/or Hispanic population continues to grow, understanding the experiences from middle school to college is critical to gleaning insights into the factors that influence the development of Latino and/or Hispanic male leaders. Using a narrative life span approach to leadership development, the study provided themes regarding the critical factors impacting leadership development across the life span of the participants. Through life stories, the study’s findings described and illustrated key factors that influenced leadership development for …

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 …

“We All Fly Together, We All Fall Together”: A Fourth Generation Evaluation Of The Experiences Of Students Of Color In A Strengths-Based Postsecondary Access Program, Allyson Gunn

Electronic Theses and Dissertations

One of the most persistent barriers within the education system preventing students of color from accessing and persisting in higher education is the deficit lens that the education system uses to judge college-worthy students. To combat this deficit lens, strengths-based programming has shown promise in validating the strengths and students bring to their postsecondary journey. This fourth-generation program evaluation amplifies the experiences of students of color within a strength-based postsecondary access program in Greater Boston, Massachusetts. Through interviews and focus groups, students, and alums of color in the Cornerstone program shared the experience that was most meaningful to them, and …

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 …

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 …

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 …

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 …

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 …

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 …

Perspective Of Nyerere On Self-Reliance: A Transformational Rhetorical For Liberating African Identity In Tanzanian Context, Ayub Mwampela

Electronic Theses and Dissertations

Julius Kambarage Nyerere (1922–1999) was the first president of Tanganyika in 1961 and the founding father of the United Republic of Tanzania, after having merged Tanganyika and Zanzibar in 1964. He died from leukemia on October 14, 1999, in London. He was 77 years old. Among the most memorable events in the life of Nyerere is his involvement in the struggle for the freedom of African people from foreign influences.

The goal of this research is to ask and answer to the following question: How does the perspective of Nyerere on self-reliance contribute to the effort of liberating African identity? …