Digital Commons Network^™

Fresh And Mechanical Properties Of Self-Compacting Concrete Using Kaolin Limestone Blend And Hybrid Slag Blend, Selesca Devi S

Theses and Dissertations

This study examined the consequences of mono and hybrid natural fibers on the mechanical and fresh properties of self-compacting concrete (SCC), in response to the growing demand for environmentally friendly building materials. In mono fiber, Abaca fiber (AF) at 0.25% and 0.5% dosage, basalt fiber (BF) from 0.25% to 2% at 0.25% increments, and sisal fiber (SiF) from 0.25% to 1.5% at 0.25% increments were evaluated through slump flow diameter, T500, compressive and tensile strength. AF at 0.25% ensured good flow with 6.6% and 4.16% higher compressive and tensile strength over 0.5% AF. SiF up to 1% improved strength but …

Advancing Eye-Gaze Writing Systems With Computer Vision, And Dynamic Text Suggestions, Walid Abdallah Shobaki

Theses and Dissertations

Eye gaze writing, a novel interaction modality, has the potential to revolutionize communication for individuals with limited mobility. In our research, we investigated the deep learning algorithms efficiency for real-time eye gaze writing. We have compared many algorithms' performance in many computer vision areas, such as object detection in which we used first YOLOv8, the second algorithm SSD, and the third algorithm is Faster R-CNN, the second computer vision area is the image segmentation in which we used DeepLab and U-Net, and the last computer vision area is self-supervised learning we have used SimCLR algorithm. By evaluating these models on …

Design & Development Of Efficient Biometric Authentication And Key Agreement Schemes For Wireless Body Area Network, Aarthi S

Theses and Dissertations

Wireless Body Area Networks (WBANs) play a vital role in continuous health monitoring, where sensitive biometric and physiological data must be protected from privacy breaches and emerging quantum-based threats. Conventional security mechanisms are often inadequate due to resource constraints, scalability issues, and vulnerability to advanced attacks. To address these challenges, this research proposes a lightweight, scalable, and future-proof security framework tailored for WBAN applications, focusing on secure communication, privacy preservation, and quantum resilience.

An anonymous Certificate-Based Signcryption–Mutual Authentication and Key Agreement (CBS-MAKE) protocol is introduced to secure extra-body communications while ensuring patient anonymity. The protocol integrates Elliptic Curve Cryptography with …

Providing Instructional Literacy Videos Increases Literacy And Parent Engagement, Maryjoann Wilks

Theses and Dissertations

Abstract MaryJoAnn Wilks Providing Instructional Literacy Videos Increases Literacy and Parent Engagement 2023-2025 Thesis chair Susan Browne, Ed.D., Professor, Department Critical Literacy, Technology & Multilingual Education Master of Arts in Reading Education This qualitative research project explored the impact of a family literacy program designed to enhance third-grade students’ reading skills through the use of instructional videos and at-home literacy activities. Conducted in the town of Bridgeton, New Jersey, the study focused on themes of preparation, motivation, and participation to examine how families engaged with the program and supported their children's learning. Data were collected through observations, parent feedback, and …

Comunidades Y Vacunas: Findings On Vaccine Hesitancy In Latine Families With Autistic Children, Danica Leticia Limon-Mialkowski

Theses and Dissertations

Parent vaccine hesitancy (VH) and subsequent vaccine refusal for children has escalated in the U.S. over the past several years and is more common among parents with an autistic child compared to the general population (Zerbo et al., 2018). This is an important issue to address given that VH has led to a resurgence of vaccine-preventable diseases (DeStefano & Shimabukuro, 2019; Geoghegan, et al., 2020). Research shows that VH is affected by parent cultural background (Fombonne et al., 2020) and that minoritized groups are more likely to experience VH (48.1% in parents of color [POC] groups versus 22.9% in White …

A Machine Learning Approach To Quantitative X-Ray Diffraction Analysis, Spencer Snow Chandler

Theses and Dissertations

X-ray Powder Diffraction (XRPD) is a powerful method in material sciences that gives insights into the atomical and crystallographic structure of a material, revealing information into the material's properties and suitability for industrial and scientific application. In geology, XRPD analysis is frequently leveraged to identify and quantify the present mineral phases in an unknown mixture. Despite it's widespread use, interpreting XRPD patterns requires highly-specialized knowledge, making the analysis largely dependent upon the background experience of the analyst. To assist experts, computational methods have been developed over the years. Some of these techniques involve fitting diffraction patterns using pseudo-Voigt functions, which …

White Students' Perceptions Of Campus Racial Climate And White Racial Identity Development At A Predominately White Liberal Arts Institution, Katie O'Brien

Theses and Dissertations

The purpose of the study is to examine the perceptions of White students about campus racial climate at a predominantly White liberal arts college in connection with students’ White racial identity development and liberal arts curriculum. The research study aims to promote a better understanding of campus racial climate at PWIs from the perspective of White students to provide insights on ways to improve campus racial climate, specifically for students of color. The data for this project were primarily collected through semi-structured qualitative interviews with White students. Quantitative data was also collected in the form of a racial attitudes assessment …

Novel Piperidone And Bispidine Derivatives: A New Approach In Cancer Therapy, Lereen Khaled Youssry

Theses and Dissertations

Cancer remains the second leading cause of death worldwide. As a result, scientists have been trying to find novel therapeutic approaches that target specific metabolic pathways selective to tumor cells. In this study, two novel piperidone and bispidine derivatives, organic molecules that target polyamine metabolism, were synthesized, and their potential cytotoxic, antioxidant and anti-inflammatory effects were investigated. Polyamines are naturally occurring metabolites that were reported to be in excess at cancer cells and were accounted for tumor proliferation, invasion and metastasis. Accordingly, the novel piperidone and bispidine derivatives were expected to disrupt tumor growth and progression via up-regulation of key …

Approximating Transport Maps Using Minibatch Optimal Transport Plans, Dawson Collins

Theses and Dissertations

Optimal Transport theory (OT) has gained much attention in the past decades due to its rich mathematical content and striking connections to other areas of math. It has also naturally found a place in data science as a way to compare and transform probability measures. Unfortunately, there remain significant computational burdens that restrict its effectiveness in large-scale data regimes. In this thesis, we consider Minibatch Optimal Transport (MiniOT), which breaks up the task of computing the optimal transport plan between datasets into several smaller tasks of computing the optimal transport plan between minibatches of the datasets. After obtaining the minibatch …

Leadership Experiences Of African American Women Vice Principals, Shakisha Mccray

Theses and Dissertations

This qualitative dissertation explores the lived experiences of African American women vice principals, an underrepresented group in educational leadership. There is a need to address the gap in scholarly research that disproportionately focuses on principals and European ethnicity. This study includes the voices and counter-stories of five African American women vice principals. Using critical race theory and Black feminist thought as theoretical frameworks, the study examines how race and gender influence their leadership experiences. Data was collected through interviews and analyzed to identify key themes. The research questions focus on how these vice principals describe their roles and responsibilities and …

Examining Enrollment Populations At A Predominantly White Research Institution In The Northeast United States, Terrence Calvin Harris

Theses and Dissertations

This qualitative critical race case study investigates the underrepresentation of Black and Latinx students at Heister University, a predominantly White public research institution in the Northeastern United States. Despite its location near two diverse cities and its reputation as an affordable, high-quality university, its student body remains disproportionately White. This study explores whether admissions and recruitment policies, either overtly or covertly, contribute to systemic barriers limiting access for students from minoritized groups. Using Critical Race Theory and Colorblindness Ideology, the research examines the intersection of race, policy, and institutional practice through interviews policy reviews, demographic data. Findings reveal that “inclusive” …

The Construction Of Ph- And Temperature-Responsive Drug Delivery Systems Based On Metal Organic Frameworks And Phase Change Materials, Wanying Wei

Theses and Dissertations

In this study, core-shell microparticles were synthesized using coaxial electrospray techniques, with Zeolitic Imidazolate Framework-8 encapsulating either Rhodamine B or Doxorubicin in the core. ZIF-8 is a material well regarded for its effectiveness in drug delivery systems. Phase change materials are composed of a 4:1 mixture of lauric acid and stearic acid in the shell. The PCM chosen has a melting point close to physiological body temperature. The structural morphology and thermal stability of the microparticles were confirmed using Scanning Electron Microscopy, X-ray Diffraction, Differential Scanning Calorimetry, Thermogravimetric Analysis, and Infrared Spectroscopy. The release of the drug was influenced by …

High- Speed Wireless Interference Separation Based On Photonic Deep Learning Accelerators And Three-Dimensional Image Reconstruction For Medical Applications, Taichu Shi

Theses and Dissertations

This dissertation is centered on fast wideband interference management through advanced photonic signal processing and hybrid communication architectures. The core of this work is based on an optical pulse sampling technique proposed for photonic blind source separation (BSS) to recover wideband signals from their sub-Nyquist samples. With the use of ultra-short optical pulses to obtain statistically representative samples, this method retains important statistical properties of the signals while significantly reducing constraints imposed by analog to digital conversion and digital signal processing. Building on this foundation, we further apply the photonic BSS system within a hybrid free space optical (FSO) and …

The Role Of The Cytosolic Chaperonin Cct In The Folding And Assembly Of G Protein Complexes, Mikaila I. Sass

Theses and Dissertations

All organisms depend on cellular signaling pathways to dictate cell growth, responses to stimuli, and all other cellular functions necessary to maintain health and survival. Many of these signals rely on G protein coupled receptors (GPCRs) and their associated heterotrimeric G proteins for signal detection and transduction. To perform this function, the three subunits of the G protein must be assembled after synthesis on the ribosome. This process requires additional proteins called molecular chaperones to assist in folding of the subunits and assembly into the G protein heterotrimer. Among these chaperones, the cytosolic chaperonin CCT plays an essential role in …

A New Approach To Stability Of Delay Differential Equations With Time-Varying Delays Via Isospectral Reduction, Quinlan Leishman

Theses and Dissertations

Understanding how time delays impact the stability of a delay differential equation is important for modeling many natural and technological systems that experience time delays. Here we introduce a new stability criterion for delay-independent stability of these equations, called intrinsic stability, showing global exponential stability for a large class of nonautonomous nonlinear systems. Our approach is able to incorporate bounded time-varying delays, including those with certain types of discontinuities. The approach we take to prove this result is novel, associating the delay differential equation with a sequence of finite-dimensional matrices of increasing size and using the graph-theoretic technique of isospectral …

Math 112 At Byu: Student Averages On Various Exam Questions, Makayla Mcleod

Theses and Dissertations

In Math 112 at BYU, exams play a crucial role in evaluating students' understanding of the course content. Traditionally, these exams are a combination of multiple-choice and free-response questions, with the latter serving as a means to assess a student's thought process while solving problems. Will students perform as well on a multiple-choice exam? Or will students' averages be higher on free-response exams? In this thesis, we test 7 hypotheses related to these questions to provide more insight into the answer. We examine other factors that may affect students' averages, including various Calculus 1 topics, modes of questioning, and difficulty …

Sacred Bonds: The Association Between Religious Giving And Relationship Quality, Sofia C. Suxo-Sanchez

Theses and Dissertations

Grounded in interdependence theory, we sought to understand how religious giving is associated with relationship quality by drawing on two distinct datasets, one from emerging adult couples and another from established couples. Using structural equation modeling, we tested the direct association between religious giving and relationship quality, and whether it was mediated by materialism. Our quantitative findings contrasted previous research; we did not find materialism to mediate the association and found a significant, negative association between religious giving and relationship quality. Through a team-based coding approach, we explored how and why established couples believed religious giving impacted their relationship quality. …

Investigation Of The Isbr Method With A Quad Detector For The Measurement Of Turbine Rotor Inlet Temperature, A. Cole Cecil

Theses and Dissertations

Temperature measurements at the inlet of a gas turbine inlet have proven challenging due to the high flow velocities, limited space, and high temperatures. This work investigates the use of the Integrated Spectral Band Ratio (ISBR) method to measure temperature using a new set of gas bands and a new method for collecting, measuring m and converting raw signals to digital temperature data at low cost and high speed (4 Hz). The Pressurized Oxy-Coal (POC) reactor was refurbished and used in this work to simulate turbine inlet conditions. The POC was modified to produce a stable natural gas and air …

Enhancing Employment Readiness Of Information Technology (It) Professionals Of India - A Talent Refactoring Approach, Lakshminarayanan K.V

Theses and Dissertations

The Indian Information Technology (IT) sector is undergoing significant transformation due to the adoption of Industry 4.0 technologies such as Artificial Intelligence, Internet of Things, cloud computing, and cyber-physical systems. These changes have redefined workforce expectations, shifting employment readiness from mere technical competence to a holistic combination of adaptability, behavioral attributes, and continuous learning capabilities. In this context, the study proposes a Talent Refactoring Framework to address employability in a rapidly evolving VUCA–BANI environment by integrating organizational, career-oriented, and individual dimensions.

A review of existing literature reveals notable gaps in understanding employment readiness as an ecosystemic and psycho-social construct, particularly …

Impact Of Telehealth On Outcomes In Daily Practice, Shannon Stuebs

Theses and Dissertations

While telepsychology has existed in various forms for years and has been researched since the 1960s (Abrams, 2020), it was not until the COVID-19 pandemic that telepsychology started to be widely used. Prior to the COVID-19 pandemic, one study found that psychologists conducted only around 7% of their work via telepsychology, a number that jumped to over 85% in response to COVID-19 (Pierce, Perrin, Tyler, et al., 2020). While there has been a significant increase in the research exploring the efficacy of telehealth since the start of the pandemic (Lin et al., 2022), further research regarding long-term impacts and specific …

Exploring Sub-Protocols For Spectrum Cooperation And Transparency, Ashton Palacios

Theses and Dissertations

With the proliferation of terrestrial and space-based wireless radio frequency transmitters and receivers in recent years, there is a greater need for spectrum cooperation and transparency. Spectrum is a limited resource that is shared between all wireless devices, both active and passive. The spectrum needs of today and tomorrow demand new techniques to enable cooperation and device transparency. This dissertation explores an innovative field, wireless sub-protocols, that provides novel software solutions for spectrum cooperation and transparency. The first application is radio astronomy. Radio astronomy deploys highly sensitive, passive RF receivers to capture faint signals from distant celestial bodies. Because passive …

Non-Invasive Near-Field Microwave Sensors For Industrial Internet Of Things Applications, Abirami K

Theses and Dissertations

The industrial sector has been revolutionized by Industrial Revolution 4.0 with the advent of the Internet of Things (IoT) which integrates the physical environment using smart sensors and Artificial Intelligence (AI) mechanisms. This demands the design of smart sensors and actuators to improve the quality of services in Industrial IoT (IIoT). The sensor design using the microwave resonating principle has attracted the research and industrial community for portable, non-invasive, non-destructive and hygienic means to evaluate the quality of substances in the food and farming industry. The microwave planar sensor has advantages in terms of low footprint, low cost, and ease …

Synthesis And Evaluation Of Novobiocin Analogues As Potential Inhibitors Of Polymerase Theta Polθ In Dna Damage And Repair, Mohammed Essam Albuhluli

Theses and Dissertations

Killing tumors while leaving normal cells unharmed is the goal of precision cancer therapy, a challenging feat that is enabled by targeting tumor-specific vulnerabilities [1]. Targeting Polθ potentiates PARP inhibitors (PARPi) in specifically killing homology-directed repair (HDR)-deficient tumor cells and re-sensitize PARPi resistant tumor cells [1]. The induced essentiality between Polθ and HDR-deficiency underscores the value of Polθ as a therapeutic target in the context of tumors with HDR genetic mutations [1]. The helicase-like domain (HLD) is a super family 2 (SF2)-type domain with DNA-dependent ATPase activity [1]. We previously discovered that the antibiotic NVB acts as an inhibitor of …

Autism Care Continuum: Exploring Specialty Services Across The Lifespan Within U.S. Academic Medical Centers, Alexis Khuu

Theses and Dissertations

Autistic people—particularly adults—experience high rates of co-occurring mental health problems and often report unmet service needs. Although several barriers to accessing quality care are well-documented, the broader landscape of autism-specific services across the lifespan remains under-researched. This two-part thesis aimed to address this gap by examining the availability of autism-specific services, as well as patterns in service utilization and associated costs, among autistic children and adults. The first study employed a systematic web-scraping protocol and data extraction procedure to identify and characterize autism specialty services offered by U.S. academic medical centers. This work revealed a general lack of autism specialty …

The Digital Forum: A Pedagogical Approach To Teaching College English Composition, Thomas Edward Plichta

Theses and Dissertations

This action research study focused on the identification of ways to improve the curriculum of freshman Writing Intensive Seminars using an innovative multimodal pedagogical methodology, the Digital Forum, in addition to formal papers and in-class writing. The research examined a Writing Intensive Seminar with approximately 20 students; There were two Research Questions for the present study. RQ1: How does the incorporation of the Digital Forum as a pedagogical approach in college freshman writing classes influence students' levels of behavioral, cognitive, and emotional engagement? RQ2: How does the incorporation of Digital Forums in freshman English Composition courses affect the quality of …

Synthesis Of Inorganic Actinide Compounds With Neptunium, Plutonium, And Americium, Travis Kelly Deason

Theses and Dissertations

There is a rush of countries around the world making the switch to greener energy sources. Nuclear energy power plants are an integral part of the shift from fossil fuels, but there are concerns over the best way to handle nuclear waste. Most of the nuclear waste is currently disposed of by incorporating the waste into a glass form through vitrification, but research into alternative waste forms, such as promising crystalline materials, could provide a more robust method of containment. Research on actinide materials is lacking due to the dangers of working with radioactive material and there are few labs …

A Call To Care: An Investigation Of Rhetorical Inquiry In First-Year Composition Educators, Madison Brooke Naimo

Theses and Dissertations

Throughout colleges and universities across the country, First-Year Composition is known to be a general education course requirement that commonly works to set students up for academic success throughout their postsecondary educational journey and pursuits. This general education course works to focus on developing composition-based skill sets that help students in various academic areas and disciplines of study throughout their undergraduate degree completion (Kinnevay, 1971; The Council of Writing Program Administrators, 2014). While much scholarship in First-Year Composition has focused on student growth and development, there have been minimal practical considerations and examinations of a large stakeholder in this education …

The Effect Of An Interdisciplinary Project On Students’ Understandings Of Mathematical Interdisciplinarity: A Qualitative Action Research Study, Jaime Krause

Theses and Dissertations

The siloed nature of education has likely caused some high school students to not recognize the interdisciplinary nature of mathematics, leading them to misunderstand its relationship to other subject areas. A misunderstanding of mathematical interdisciplinarity can cause issues when these students approach interdisciplinary problems later in life. The purpose of this study was to observe, investigate, and analyze the ways in which students understand mathematical interdisciplinarity following a collaborative and interdisciplinary project. I implemented a descriptive qualitative action research approach to determine how a collaborative interdisciplinary project on NASA technology in a high school mathematics course affects students’ understandings of …

Black Steel In The Hour Of Chaos: Hip-Hop And The Carceral State In The East San Francisco Bay Area, William Maclane Hull

Theses and Dissertations

“Black Steel in the Hour of Chaos: Hip-Hop and the Carceral State in the East San Francisco Bay Area” explores the histories of urban redevelopment and deindustrialization, racialized poverty, police and the carceral system, and hip-hop culture in Oakland and other parts of the eastern San Francisco Bay Area. It explores East Bay politics and urban development in the 1900s, which resulted in the flight of industries and wealthy white residents to the suburbs and the erosion of public services. Black community organizations and funk music alike articulated the damages done by these processes in the 1960s. Subsequently, politicians and …

Editing Japan: Pornography Commentary As Postcolonial Revenge In China's Digital Sphere, Yichi Zhang

Theses and Dissertations

This study examines how Chinese male audiences reconstruct postcolonial masculinity through the consumption and reinterpretation of Japanese pornography. By analyzing commentary videos produced by "Team Strawberry," I argue that this phenomenon constitutes a symbolic revenge against Japan's historical dominance. Through degrading Japanese female performers and mocking Japanese culture and male actors, Chinese viewers invert colonial hierarchies, transforming sexual consumption into a nationalist project. However, this mimicry of colonial violence ultimately reinforces patriarchal structures rather than subverting them, while also framing nationalism through sexual conquest that mimics collective historical trauma. The re-editing and mocking of Japanese pornography by Chinese content creators …