Digital Commons Network^™

Sensemaking Of The Unexpected: A Qualitative Study In Understanding The Actions Of South Texas School Board Members To The Covid-19 Pandemic, Angel Magallanes

Theses and Dissertations

The purpose of the study was to gather knowledge of how school board presidents make sense of unexpected situations and what influences, informs, or impacts their decision-making during situations void of information and filled with uncertainty for decision-making in the midst of an imminent crisis. The research was focused on the lived experiences of three school board presidents in South Texas during the COVID-19 pandemic in 2020. Utilizing an interpretive phenomenological analysis, I analyzed interviews and observations of recorded school board meetings as data sources that I could triangulate about the COVID-19 phenomenon for understanding how …

Soil Carbon Sequestration Efforts In Arid And Semi-Arid Climates Under Conservation Agriculture And Reforestation, Samantha Lynn Colunga

Theses and Dissertations

Soil organic carbon (SOC) plays a vital role in the global carbon cycle and aids in climate change mitigation. However, deforestation and intensive agricultural practices threaten topsoil and carbon (C) pools through soil disturbances releasing vast amounts of carbon dioxide (CO2) by enhancing the decomposition of organic materials. Degraded soils typically lack stable aggregates, nutrient and water retention, and overall low fertility. In arid and semi-arid regions, soils are in an even more dire situation, as low precipitation and high temperatures slow down the accumulation of SOC. This thesis has two objectives: 1) to evaluate whether conservation tillage practices increase …

A Descriptive Exploration Of Selected Employment Barriers And Supports For Individuals With Visual Impairments In Bangladesh, Mohammed Mozadded Hossen

Theses and Dissertations

Employment is crucial for individuals with disabilities, including those with visual impairments, as it facilitates financial independence, promotes social inclusion, enhances the quality of life, and enables the utilization of valuable job-related skills. However, some barriers obstruct opportunities for employment for individuals with visual impairments, which affect different areas of their lives. This dissertation investigated the employment barriers, supports, and outcomes for individuals with visual impairments in Bangladesh, with an aim to understanding the factors that impacted employment outcomes for individuals with visual impairment, including access to education and training, availability of employment supports …

Escúchame, Mi Ciencia Cuenta: Leveraging Cultural Ways Of Knowing To Increase Chicana Stem Engagement, Patricia Ramirez-Biondolillo

Theses and Dissertations

This paper is about leveraging cultural ways of knowing such as ethnobotany in order to increase STEM engagement in Chicanx populations. The conceptual framework utilized in this study combines social justice, Chicana feminist epistemology, land-based pedagogy, critical place-based pedagogy, pedagogical praxis, pluralism and ecological sustainability to achieve this end. Four pre-service Chicana science teachers provided testimonio from their elder assignment and engaged in two focus groups in order to identify relevant themes that impact Chicana engagement in STEM. Major themes identified were challenges in bilingual education, elder knowledge as a form of pedagogy, stagnation in common science teaching practices, tensions …

Uncovering Insights On Remote Learning Through A Critical Discourse Analysis Of Tweets At The Start Of The Pandemic In The United States, Douglas Wayne Bridges

Theses and Dissertations

This dissertation examines the discourses surrounding remote learning during the initial stages of the COVID-19 pandemic through Twitter conversations. Employing a Critical Discourse Analysis informed by Michel Foucault’s theories of discourse and power, this study explores how the pandemic has transformed educational interactions over social media platforms. It particularly focuses on the relationships between language, power, and social structures, highlighting the transformative potentials of remote learning amidst a global crisis.

The research reveals how discourse on Twitter reflects broader societal and cultural dynamics, serving as a microcosm of the shifts within the educational sector. Analysis of Twitter threads, retweets, and …

Synthesis Of Nano-Microstructured Barium Titanate (Batio3) Incorporated In Pvdf-Hfp/Peo For Sustainable And Green Energy Generation, Rigobert Ybarra Jr.

Theses and Dissertations

The global reliance on fossil fuels and natural gas, has largely dominated the energy production field, but due to finite resource depletion and escalating greenhouse gas emissions, the immediate exploration of sustainable energy alternatives to mitigate climate change and ensure resource security has been a major concern. There has been extensive research into other more renewable methods of energy production such as wind and hydropower. Of these current energy generation types there are many areas of untapped potential from the mechanical movements generated ambiently not only in the large scale of power generation but also on a smaller scale. The …

Affective Life, Mobility And Unity In U.S.-Mexico Transborder Families, Aaron A. Adame Sosa

Theses and Dissertations

There has been abundant research on transnational families and their lived realities, but most of this research focuses on analyzing family relations across long distances. This thesis examines transnational life at the borderlands and develops new frameworks for understanding family unity and separation. Using concepts from the sociology of emotions, I find that economic and opportunity inequalities structure much of transborder life and that the emotional work different family members do for the sake of their family unity is largely based on mobility privilege and the idea that the U.S. is economically better off, even as the relative poverty between …

A Statistical Fetch Model For Water Wave Glint Correction Using Worldview-3 Imagery, Amanda Jade Quintanilla

Theses and Dissertations

Sun glint in satellite imagery of the water surface contaminates the upwelling signal received by a detector. Many models exist that attempt to correct for this wave facet effect and phenomena. In this work a model for sun glint correction is created using the comparison of image transects between two nearly simultaneously collected images of the same area, although with differing sensor geometry. One image utilized in this research is almost entirely glint free while the other is contaminated by water wave facet glint. Although many models for removing sun glint exist based on various techniques, none are completely accurate, …

Development Of A Model To Predict Maximum Crack Width And Spacing In Reinforced Concrete Beams Under Flexural Stress, Saeed Alghamdi

Theses and Dissertations

Cracking in reinforced concrete structures is unavoidable due to the low tensile strength of concrete. Even though minimizing cracks on exposed concrete surfaces is significantly important from the aesthetics point of view, it is also very important for the durability and overall performance of the structure.

Flexural members must be designed to minimize cracking that may occur during the structure's service life. Even though there has been a lot of experimental work on crack width over the last several decades, a literature review reveals that researchers still can't agree on which variables are most important. Part of the reason for …

Organizational Cultural Entrenchment: Exploring Cultural Antecedents Of Actively Destructive Employee Behaviors As A Manifestation Of Voice In Mergers And Acquisitions, Keith Dellano Holloway

Theses and Dissertations

Mergers and acquisitions are frequently leveraged as a vehicle for company growth. However, many of these transactions fail to yield a positive result and often cause a net loss of shareholder value.

There are many interrelated factors at work within a merger or acquisition. Structure, leadership, finances, strategic fit, market, and price are just a few variables to consider. However, the factor of culture, and the failure of cultural integration, has surfaced in literature as a significant contributor to losses within mergers and acquisitions.

This study built on the work of Harris, Hirschman, Kotter, and Schlesinger and examined the deleterious …

Improving Static Cold Storage Life Of The Human Heart Before Transplant, Juan Sebastian Rodriguez Paez

Theses and Dissertations

Organ storage and transportation are critical steps for the success of organ transplantation. Static cold storage (SCS) of hearts for heart transplantation (HTx) remains the standard approach. However, SCS may involve damage to the tissue resulting from extended hypothermic preservation, potentially affecting organ viability. More over, the temperature distribution on and within the heart is unknown during heart transplantation. Therefore, there is an interest to study different stages of the heart transplantation process towards determining the 3D temperature distribution on and within the heart. There could be a possibility of having a hypothermic injury in different parts of the heart …

Amazon Fba Vs Fbm; A Strategic Approach To Determine Which Method Can Effectively Utilize Project Management Principles To Enhance Your Success As A New Amazon Seller., Tiffany Renee White

Theses and Dissertations

Navigating the complexities of a platform such as Amazon demands a strategic approach guided by project management principles. A comparative analysis of Fulfillment by Amazon (FBA) and Fulfillment by Merchant (FBM) methods were completed by focusing on how project management principles optimize product acquisition, supply chain management, and shipping methods for Amazon sellers. The objectives of this study included the identification of top product acquisition tools, the evaluation of inventory management software, assessing shipping methods, and determining the most effective fulfillment process for Amazon seller success. A mixed-methods approach was applied, involving an Amazon seller survey, literature review, data analysis, …

Investigating The Relationship Between Metacognition, Motivation, Self-Regulation Strategy Usage, And Physical Activity Participation, Kay Sharon Stanfield

Theses and Dissertations

There are numerous benefits associated with physical activity. Unfortunately, few people participate in enough daily activity to reap the rewards. Health professionals have explored ways to promote adherence to physical activity and healthy behavior. Evidence shows self-regulation to be a determinant of physical activity. This study investigated the relationship between self-regulation strategy usage and levels of physical activity participation. Additionally, the study examined how motivation (through the perspective of Self-Determination theory) impacts physical activity. Six behavior regulation styles correspond to the degree of motivation (from low to high) on the Self-Determination continuum. A comparison of behavior regulation styles to physical …

Microwave Imaging Technique For Breast Cancer Detection, Nure Alam Chowdhury

Theses and Dissertations

Breast cancer is a global problem, and it is inevitable to detect cancerous cells at early stages. In recent years, microwave imaging technology has been widely applied in biomedical applications for its non-ionizing radiation. In this study, we design a micro-strip patch antenna with an inverted T-type notch in the partial ground to detect tumor cells inside the human breast. The size of the current antenna is small enough (18 mm × 21 mm × 1.6 mm) to distribute around the breast phantom. The operating frequency has been observed from 6–14 GHz with a minimum return loss of −61.18 dB …

Caelus: Cubesat Array For The Exploration Of The Uranus System, Dylan George Heidenrich Barnes

Theses and Dissertations

Following recommendations from the 2023-2032 Planetary Science and Astrobiology Decadal Survey, we propose a novel Pre-Phase A level Uranus exploration mission concept that is centered on using swarms of small spacecraft to observe the Uranus system. This mission could act as a supplement to the Flagship Uranus Orbiter and Probe mission detailed in said Decadal Survey. We propose launching a 4,500 kg spacecraft on an Earth-Jupiter-Uranus gravity assist transfer trajectory with a transfer time of six years, launching in 2033 and arriving at Uranus in 2039. This shorter transfer time and accelerated development timeline would allow for an earlier arrival …

Denoising Diffusion Probabilistic Models Based Accelerated Mri, Alexander Francis Bugielski

Theses and Dissertations

Magnetic Resonance Imaging (MRI) is a cornerstone in obtaining intricate visualizations of anatomy and physiological processes within the human body. However, its extensive scan duration not only causes patient discomfort but also increases the likelihood of motion-induced artifacts in the images. To address such a challenge, this study investigates deep neural network models for reconstructing high-resolution MRI images from noisy and significantly undersampled data in a supervised learning manner. Specifically, it compares three models: a conventional U-Net, a self-attentive U-Net, and an innovative probabilistic diffusion model that builds upon the self-attentive U-Net architecture. These models are evaluated on their ability …

The Effects Of Performance Matrix Scorecards And Job Crafting On Student-Concentrated Supervised Fieldwork Experience And Burnout Levels, Mary Louise Lewis

Theses and Dissertations

Prioritizing behavior analyst well-being should start during coursework and concentrated supervised fieldwork (CSF) experience. Research shows burnout is highly likely in human service settings, and teaching individuals how to implement protective factors against burnout should be a focus in addition to required coursework and practicum experience. Experiment 1 will analyze the effects of a performance matrix scorecard on improved productivity and well-being for students starting their practicum experience. Experiment 2 will teach students how to practice job crafting to enhance the use of the performance matrix scorecard. Using these tools could teach students generalizable skills to maintain high levels of …

The Dark Side Of Engagement: An Organizational Fairness Perspective, Katherine Naomi Rau

Theses and Dissertations

Employee engagement has long been regarded as a positive phenomenon for organizations and individuals. However, recent investigations into unintended, negative consequences of engagement have illuminated the potential “dark side” of engagement. This research applied an organizational fairness lens by investigating the relationship between engagement and psychological contract fulfillment to explain why engaged employees may experience emotional exhaustion and turnover intentions. Additionally, autotelic personality and job crafting were explored as potential mitigating factors in weakening the relationships between psychological contract breach and emotional exhaustion and turnover intention. While findings across two studies did not support the assertion that engagement was related …

Investigating Endothelial Damage During Ischemic Stroke Treatment Using In Vitro And Computational Models, Zackary Lorton

Theses and Dissertations

Large vessel occlusion during acute ischemic strokes requires mechanical thrombectomy (MT) procedures using stent retrievers (SR). However, complete clot removal typically takes several attempts, which can amplify endothelial cell injury (EI). This project aims to characterize the extent of EI during MT using an in vitro vascular platform and a finite-element model (FEM). Impact of SR diameter and characterization of SR mechanical forces are assessed and correlated with human umbilical vein endothelial cell (HUVEC) response. HUVECs were seeded on fibronectin (4 µg/cm²) coated true-scale PDMS arterial phantoms with 2.5 mm luminal diameter. Test groups (n=6) either …

Investigating Factors Influencing Blockchain Adoption In Saudi Healthcare Data Management, Noura Mohammad Alkhalifah

Theses and Dissertations

Blockchain technology can potentially address security and privacy issues concerning the collection, storage, and sharing of healthcare data. However, its adoption within the healthcare sector is nascent in Saudi Arabia. This underutilization prompted our investigation into the determinants influencing blockchain adoption, intending to fully empower the Saudi healthcare sector to leverage blockchain capabilities. To achieve this, an extensive literature review was conducted to identify the pivotal factors encompassing technology, organization, and environment (TOE) that affect the successful implementation of blockchain technologies in managing healthcare data within the Saudi context. Utilizing the TOE framework, this study formulated three hypotheses concerning the …

Evaluating Distributed Software Design Conformance Through Trace Comparison, Reid Barry Anderson

Theses and Dissertations

The design of a system and its implementation are two tasks often carried out by different individuals on a development team and can occur weeks or months apart. This creates a potential for divergence between real behavior and the designed model that the implementation is intended to match. Particularly as time passes and individuals that were present for the original conception of the design leave, a system can begin to lose coherence and drift apart from intended design principles. Even with a robust and high-quality design for a software system, more is needed to guarantee that the key details of …

Exploring The Role Of Restorative Practices Facilitators In The Secondary School Setting: Self-Efficacy, Collective Efficacy, And Systemic Implementation Recommendations, Rachel K. Bachmeier

Theses and Dissertations

While restorative practices (RP) is hailed as one of the oldest criminal justice models in the world, the official advent of RP in education did not occur until the 1990s. Mirroring the reemergence of RP into legal systems, educators began experimenting with the application of RP in the educational setting. Today, restorative work in schools has expanded beyond an alternative to exclusionary discipline measures into an effort to build, maintain, and, when necessary, restore community. More and more teacher preparation programs address restorative justice principles and the rising dedication to Social Emotional Learning and Culturally Responsive Teaching often embraces RP. …

Synthesis Of Highly Selective Fluoroionophores For Metal Cations And Their Biological Applications, Md Abdur Rahim Badsha

Theses and Dissertations

Fluoroionophore for ionic and neutral analytes are extensively used in a number of fields for example: pharmacology, physiology, biology, and environmental sciences. The concept of this fluoroionophore in other word fluorescent chemo sensor has been used in the past 150 years. In recent years, a wide range of fluoroionophores have been developed for the detection of chemical species which are important for environment and biology. Instead of the progress, still there are challenges and problems in this area of research. This thesis addresses novel sensors for the measurement of biologically important cations. The sensors are based on fluoroionophores which shows …

The Effects Of Juror Characteristics And Case Type On Trans Panic Defense Verdicts, Isabella Noel Coppa

Theses and Dissertations

The trans panic defense is a provocation defense that uses the victim’s transgender identity as justification for the defendant’s violent actions. Previous research has identified juror characteristics that predict support for the gay panic defense (Michalski & Nunez, 2022) and trans panic defense (Michalski et al., 2022), but less is known about whether case type impacts support for the trans panic defense. This study sought to fill this gap by manipulating case type and further exploring juror characteristics that predict greater support of the trans panic defense. This study utilized 188 participants that read crime vignettes featuring transgender or cisgender …

Usda Wildlife Services Management Efforts At The Grand Forks Wastewater Treatment Plant, Dorothy Celeste Daulton

Theses and Dissertations

Wildlife collisions with aircraft (wildlife strikes) are a costly and dangerous issue. In recent decades, wildlife strikes within airport boundaries have decreased partly due to on-airfield wildlife strike mitigation efforts. Landscape attractants surrounding airfields within an 8 km radius have been found to influence the occurrence of wildlife strikes by increasing wildlife presence and abundance on or near airfields. The effectiveness of mitigation efforts can be increased by extending operations to include landscape features in an 8 km radius from airports. However, not much is known about the long-term effects of wildlife strike mitigation operations when conducted on neighboring properties, …

Analyzing The Effects Of Land Use, Land Cover, And Infrastructure On Water Quality Standards Within The Itasca And St. Louis Moraine Region Of Minnesota., Jamesguy Gierisch

Theses and Dissertations

The river and lake systems in the United States are essential to commerce and human existence. A study of the water quality of the upper Mississippi River watershed was conducted within Itasca State Park, Minnesota. This research focused on ten lakes within the perimeter and backcountry parts of the State Park. The focus of this research was the water quality between lakes, the water quality compared to anthropogenic features, and water quality compared with the land cover of its watershed. Water samples were collected from July 2022 through May 2023 and analyzed for selected ions, field parameters of temperature, pH, …

Equipping Leaders To Meet The Essential Needs Of Early Childhood Educators In North Dakota: Sustaining An Engaged And Highly Qualified Early Care And Education Workforce, Beth Heyne

Theses and Dissertations

High-quality early childhood program options are in high demand not only because research has solidified the importance of early childhood experiences on human development but also because most households have all available adults participating in the labor force. Sustainability of the early care and education workforce is a common problem of practice that impacts many early childhood settings, which has only been exacerbated in recent years because of the Covid-19 pandemic. The purpose of this research aims to identify challenges faced by early childhood educators to equip leaders with strategic approaches to increase the likeliness of organizational commitment and engagement …

A Qualitative Case Study Of Students' Of Color Perceptions And Experiences Of Academic Success In College Algebra At Snow College, Melanie Larsen Jenkins

Theses and Dissertations

This qualitative case study explored perceptions of learning support and student success, particularly for students of color who had enrolled in a college algebra course. The purpose of this study was primarily to include student voices in the conversations about student success. The study uses a qualitative case study approach in two ways: 1) to interview nine students who found success and students who did not find success in College Algebra to glean information about their personal experiences and perceptions of learning and 2) to interview three professors of College Algebra to understand their pedagogical strategies that are designed to …

Law Enforcement And Traumatic Experiences: A Qualitative Study With Administrators, Tami Jo N. Lieberg

Theses and Dissertations

The culture and work experiences of law enforcement lead to unique workplace trauma. The cumulative and complex trauma commonly faced by law enforcement officers can activate multiple stress-related illnesses, including Post-Traumatic Stress Disorder (PTSD). These illnesses can have high personal costs to the individuals, lead to loss of departmental productivity and effectiveness, and incur higher expenses for taxpayers due to overtime and high turnover rates and potential lawsuits. Research over several decades has identified risk and resiliency factors for officers. One identified risk and resiliency factor is relationship with management. This research study explores how department leaders can assist officers …

Additives Impact On Wet Strength And Size Development In Papermaking- Polyamide Epichlorohydrin (Pae), Alkenyl Succinic Anhydride (Asa) And Alkyl Ketene Dimer (Akd) Cases, Yao Parnell Ntifafa

Theses and Dissertations

Additives are ingredients used in papermaking to enhance fiber properties, introduce special properties to the paper and improve the efficiency of the paper making process. Wet strength agents, sizing agents, dry strength agents, fillers, retention aids, defoamers, dyes and pigments are common additives used in paper mills. Poor retention of wet strength additive such as PAAE (polyamide epichlorohydrin) and hydrophobicity loss due to ASA (alkenyl succinic anhydride) and AKD (alkyl ketene dimer) size reversion not only increase cost and reduce product quality in the mill but also increase customer complaints and rejections.In this study, a method was developed to quantify …