Digital Commons Network^™

The Impracticality Of Silk, Jo A. Reyes

Theses and Dissertations

In the impracticality of silk, the author examines and critiques the world through poetry and prose poetry, specifically addressing gender, sexuality, relationships, the borderlands, and canonized art as they view it to foment a new understanding and voice during a time of societal and personal shifts. Further complicating the author’s understanding are questions around desire both within reclaimed sensuality and within Audre Lorde’s larger understanding of desire as foundational and necessary in creation and liberation, and Gloria E. Anzaldúa’s use of autohistoria-teoria and her work within borderlands as ways toward reevaluating and reclaiming identity and place in the larger world. …

A Phenomenological Study Of Latina Poets As Leaders At Higher Education Institutions, Rodney Gomez

Theses and Dissertations

This interpretive phenomenological study addresses the underrepresentation of Latinas in higher education leadership roles by focusing on the lived experiences of Latina poets who have served as higher education leaders. Data, collected through semi-structured participant interviews and participant writing samples, was analyzed through a standard method of thematic analysis. Latin American and U.S. theories of decoloniality and Yosso’s community cultural capital guided interpretation of participant experiences. Five themes emerged from the analysis: border negation, foundational values, othered leadership, importance of community, and writing as necessity. Discussion of participation experiences suggests that ways that poetry and creative writing can be used …

An Investigation Into The Enoughness Mindset, Ai Nhan Thi Ngo

Theses and Dissertations

The concept of enoughness was an old but forgotten concept in human history. This research reintroduced the concept to our contemporary culture as a means to deal with consumers' endless desires by exploring the enoughness concept. Contemporarily suppressed under the development of modern capitalism, an extensive mythological trace of the enoughness concept showed its existence through more than 25 centuries across cultures with four key components: reining in desires, knowing contentment, knowing when to stop, and consideration of harmony. Building upon theories of desires, this research positioned enoughness as a means to help tame consumers' endless desires that can be …

Variational Bias Sampling For Collaborative Filtering Recommender Systems, Prisca Stephens

Theses and Dissertations

Advancements in digitalization has yielded enormous growth of data on online platforms, overwhelming users with multitude of options to choose from. Recommender systems narrow down these options to a few relevant ones thereby facilitating the decision-making processes for users. This study presents a framework for integrating variational bias sampling into model-based collaborative filtering techniques for recommender systems. Variational bias sampling is a novel and unique way to account for random factors that affect explicit ratings in collaborative filtering recommender systems. A Gaussian distribution is used to model all the possible random factors that could affect ratings. Sampling user and item …

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 …

A Study On A Vector Complex Modified Korteweg-De Vries Equation, Changyan Shi

Theses and Dissertations

In this thesis, we systematically study a vector complex modified Kordeweg-de Vries equation by combining Hirota's bilinear method and the the Kadomtsev–Petviashvili (KP) reduction method. This vector nonlinear equation is a multi-component generalization of the well-known modified Kordeweg-de Vries (mKdV) equation and can be reduced to the known Hirota equation, Sasa-Satsuma (SS) equation, Sasa-Satsuma-mKdV equation as well as coupled Sasa-Satsuma equation. First, we bilinearize the vector complex mKdV equation under both the zero and nonzero boundary conditions by introducing auxiliary tau functions. Then, starting from two sets of bilinear equations of multi-component KP hierarchy and single-component KP-Toda …

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 …

Exploring Chicana Preservice Teachers’ Conscientizing Processes: Introducing An Array Of Criticalities In An Elementary Social Studies Methods Course, Raul Garza

Theses and Dissertations

Recognizing that our preservice teachers are experiencing a euro-centered teacher preparation curriculum, this study aimed to explore Chicana preservice teachers' interactions with an array of criticalities focused on a bioregional context that highlighted critical and resistant resources.

Chapter 1 surveyed the literature on growing critically conscious teachers of color and posed the following research questions: How do critical place-based pedagogies impact Chicana preservice teachers’ experiences in a social studies methods course? How do Chicana preservice teachers respond to a broad array of criticalities? How do the critical and democratic pedagogies experienced in the social studies methods …

Examining Time Spent On Social Media And Its Effects On Mental Health In Terms Of Body Image Concerns, Self Esteem And Overall Quality Of Life Among U.S. Adults, Rigel Macarena Pinon

Theses and Dissertations

Daily exposure and dependence on computer-based technologies (smartphones) allows for 24/7 constant access to social media (i.e., Facebook, Instagram, Twitter, YouTube, TikTok, and other sites) and has empirically shown to have a positive and negative impact on the mental health of individuals across cultures in our society. Depending on user intent, exposure, and interests, social media platforms can create a sense of community; however, some of the platforms and what users post about themselves has led to cyberbullying, low self-esteem, user addiction, suicide, self-harm behaviors such as eating disorders, sexual dysfunction, and other mental health issues such as depression and …

An Exploratory Case Study Of Students’ Blended Learning Experiences During Post Emergency Learning, Heidy M. Garcia Moreno

Theses and Dissertations

The COVID-19 pandemic has accelerated the integration of technology in classrooms. This has highlighted the need for a deeper understanding of how students experience these learning environments. In response, this case study explored how students experience blended learning in post emergency learning through a digital equity lens. The analysis of interview data revealed six major themes, which yielded three key findings. These findings emphasize the need to embrace a simplified approach to technology integration, refine instructional practices to effectively use technology as a supplement rather than a replacement for traditional tactile elements, while also advancing digital literacy that builds high …

Space Transformation For Open Set Recognition, Atefeh Mahdavi

Theses and Dissertations

Open Set Recognition (OSR) is about dealing with unknown situations that were not learned by the models during training. In OSR, only a limited number of known classes are available at the time of training the model and the possibility of unknown classes never seen at training time emerges in the test environment. In such a setting, the unknown classes and their risk should be considered in the algorithm. Such systems require not only to identify and discriminate instances that belong to the source domain (i.e., the seen known classes contained in the training dataset) but also to reject unknown …

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 …

A Historical Analysis Of Bilingual Program Implementation, Jessica Gonzalez Perez

Theses and Dissertations

The purpose of this research study was to uncover opportunities for reimagining the dual language program. Furthermore, it aims to provide valuable insights to district leaders contemplating initiating such programs. Through an examination of the program's inception and subsequent evolution, the research will offer a comprehensive understanding of its background and development. Integral to this exploration are district leaders' and campus administrators' perspectives and viewpoints directly involved in implementing the program. Their insights will shed light on the program's journey and inform potential improvements or adaptations. Ultimately, this study endeavors to serve as a roadmap for district leaders navigating the …

Test And Evaluation Model For Midwater Docking Of Autonomous Underwater Vehicles, Parker Baillon

Theses and Dissertations

This research created a Test and Evaluation (T&E) model for midwater Autonomous Underwater Vehicle (AUV) capture. The creation of this model will allow for a better assessment of the feasibility of midwater AUV capture. To achieve this, the T&E model was exposed to various flow conditions to assess stability. Capturing an AUV in midwater, the area below the wave-affected zone to the sea floor, has many benefits for an AUV and its mission. AUVs basing missions from a midwater dock will not be affected by wave motions. A midwater dock can be transported to any mission site and deployed with …

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 …

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 …

Controlled Delivery Of Peptide And Gasotransmitter For Promoting Vascular Endothelialization, Shirin Changizi

Theses and Dissertations

Endothelial cells (ECs) are vital for maintaining proper vascular function and regulating processes such as hemostasis and inflammation. Disruption of endothelial cells integrity can lead to several pathological conditions, including coronary artery disease, vascular cognitive impairment, and dementia (VCID). Alterations in ECs distribution may lead to compromised blood-brain barrier (BBB) function, facilitating the passage of blood components and contributing to conditions such as Alzheimer's disease. Additionally, disruptions in ECs function can lead to early-stage thrombosis and intimal hyperplasia, resulting in graft failure in small-diameter (

This study aimed to develop innovative approaches for drug delivery to the BBB and TEVGs …

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, …

Thermal Conductivity Of Thin Porous Ceramic Coatings: An Analytical And Experimental Study, Lei Zhao

Theses and Dissertations

An analytical model of the thermal conductivity of the porous yttrium-stabilized zirconia (YSZ) layer used in the thermal barrier coatings (TBCs) is presented. Such high-temperature resistant coatings are essential to protect the metallic components of gas turbine engines. The model calculates the conductivity based on the coating's porosity, pore size distribution, and pore morphology, including the individual pore cross-section area, aspect ratio, and orientation, which are extracted from the scanning electron microscopy images. The model was verified through comparisons with numerical simulation results from a multiphysics software tool. A laser temperature gradient test was performed to validate the analytical model …

4-Channel Spatially Multiplexed Communication System In Single-Core Optical Fibers, Ce Su

Theses and Dissertations

This dissertation delves into exploring and advancing spatial domain / space division multiplexing (SDM) technologies within single-core optical fibers, a frontier in optical fiber communications poised to meet the burgeoning global demand for data transmission. At the heart of this research is the pursuit to significantly enhance the capacity and efficiency of optical fiber communication systems without necessitating additional fiber infrastructure. This work unveils a new paradigm in optical fiber communications characterized by a pioneering 4-channel SDM system through a meticulous process encompassing theoretical modeling, computational simulations, design innovations, and rigorous experimental validations. Theoretical contributions include the development of refined …

Representation Learning For Generative Models With Applications To Healthcare, Astronautics, And Aviation, Van Minh Nguyen

Theses and Dissertations

This dissertation explores applications of representation learning and generative models to challenges in healthcare, astronautics, and aviation.

The first part investigates the use of Generative Adversarial Networks (GANs) to synthesize realistic electronic health record (EHR) data. An initial attempt at training a GAN on the MIMIC-IV dataset encountered stability and convergence issues, motivating a deeper study of 1-Lipschitz regularization techniques for Auxiliary Classifier GANs (AC-GANs). An extensive ablation study on the CIFAR-10 dataset found that Spectral Normalization is key for AC-GAN stability and performance, while Weight Clipping fails to converge without Spectral Normalization. Analysis of the training dynamics provided further …

Navigating School Restructuring In The Post-Covid Era: A Principal’S Perspective In Sustaining Organizational Health While Bridging The Academic Achievement Gap, Alma Alicia Perez-Campos

Theses and Dissertations

In 2019, the COVID-19 pandemic led to nationwide school closures, followed by a mandate for schools to reopen in 2020, posing challenges for ensuring both educational continuity and student safety. This paper presents findings from a mixed-method study involving ten campus principals in District A, South Texas, post-pandemic. Qualitatively, the study explored the principals' perspectives on restructuring their campuses to address achievement gaps while maintaining organizational health. Quantitatively, it examined the relationship between achievement and organizational health scores and any differences in organizational health pre- and post-COVID-19. The study aimed to offer insights for future …

Preparing Teachers To Differentiate Instruction: A Systematic Review, Betsy Ahearn

Theses and Dissertations

Differentiated Instruction is the term used to describe a variety of strategies for successfully addressing student diversity in the classroom. It relies on the attitudes of teachers who aim to maximize learning for all students and is based on the use of assessment data to respond to student readiness, interest, and learning profile. Although implementation has been found to have positive results in improving student performance many barriers have stood in the way of teachers utilizing these techniques. This systematic review of literature provides an extensive overview of information related to differentiated instruction guided by research questions. The methods utilized …

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 …

Access To Books For Lower Socioeconomic Students: Creating A Book Sharing Intervention, Laura Fernandez

Theses and Dissertations

Lack of access to books has a lasting effect on children. The home literacy environment of a child impacts their emergent literacy skills, and later the level of literacy with which the child enters kindergarten. Children from lower socio-economic environments are more likely to enter kindergarten behind their peers due to factors such as: less access to books in their home due to poverty and having family members that work multiple jobs and have less time to spend reading with their children. Shared reading between a caregiver and a child is an integral piece of emergent literacy that can start …

Investigating The Potential Of 3d Concrete Printing For Unreinforced Structures, Alireza Hasani

Theses and Dissertations

Additive manufacturing in construction has surged in recent years. This thesis explores the advancements of 3D Concrete Printing (3DCP) within additive construction. Through an exhaustive analysis of 137 built projects and various publications, the research synthesizes the states of research and practice of 3DCP technology. It offers insights into key factors influencing 3DCP structural performance, its potential advantages, and challenges. Additionally, the feasibility of employing 3DCP for constructing unreinforced structures, particularly unreinforced concrete pipes, is evaluated through series of experiments. The research aims to ensure compliance with standards and evaluate their suitability for real-world transportation applications by conducting structural, fresh, …

A Hybrid Framework To Secure Iot Sensor Networks Based On Blockchain And Machine Learning, Shereen Ismail

Theses and Dissertations

With the advances in sensor network technologies, more and more networked things, or smart objects, are being evolved in cyber-physical-based systems including Internet of Things. In recent years, Internet of Things Sensor Networks is a significant subject to a variety of internal and external cyber-attacks, necessitating the development of robust countermeasures tailored to their unique characteristics and limitations. Various prevention and detection techniques have been proposed to mitigate these attacks. Classical security techniques, such as spread spectrum, cryptography, and key management, may not efficiently detect attacks, and can demand sophisticated software and hardware changes, rendering these solutions insufficient to address …

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 …

Examining The Shared Knowledge And Collaboration When Working With Students With Sensory Disabilities, Lacey Jo Long

Theses and Dissertations

The purpose of this study was to explore the shared knowledge and collaboration between special education and itinerant teachers working with students with sensory disabilities (i.e., teachers of students with visual impairments, teachers of the deaf/hard of hearing, and teachers of students who are deafblind). This study addressed the following research questions: What do special education and itinerant teachers need to know about sensory disabilities? How does this shared knowledge affect the collaboration of special education and itinerant teachers? The study was conducted using an anonymous online survey of special education and itinerant teachers serving students with sensory disabilities, including …

Exploring Player-Coach Relationships Through Competitive And Healthy Environments In Collegiate Sports, Westin Michaud

Theses and Dissertations

This study was designed to suggest ways to help create healthier player-coach relationships in collegiate sports by collecting data from student-athletes in the NCAA transfer portal. The student-athletes who were selected to participate have successfully transferred through the 2021-2022 Men's ice hockey transfer portal, which allows players to move to a new school and hockey program once in their NCAA careers. The study seeks to highlight the reasons student-athletes enter and eventually decide to transfer. Through the fundamental procedural leadership approach in Artifact Three, the findings will point to a healthier player-coaching relationship in collegiate environments by seeking to understand …