Digital Commons Network^™

Data-Assimilation-Enabled Fast Convergence Of The Uzawa Scheme For Navier-Stokes Equations With Large Reynolds Numbers, Jessica C. Franklin

All Theses

This work studies efficient techniques utilized to solve the Navier-Stokes equations that model incompressible Newtonian flow in the setting where partial solution data is available. First, we analyze the Picard iteration and Picard with continuous data assimilation applied and test convergence. Then, we analyze the Arrow-Hurwicz (AH) and Uzawa iterative procedures and test convergence. Finally, we apply continuous data assimilation to Uzawa, and analytical and numerical results show that CDA improves Uzawa convergence for the NSE, similar to CDA-Picard but it is much more efficient.

A Mixed-Methods Design-Based Research: Study Of Teacher Self-Efficacy And The Implementation Of Social Emotional Learning In The High School Classroom, Avia Brown

Dissertations

The escalating mental health crisis among adolescents, exacerbated by the COVID-19 pandemic, positioned schools as critical intervention sites for supporting student well-being (K. McNamara, 2020). However, teacher capacity and self-efficacy in implementing social-emotional learning (SEL) competencies remain significant barriers to effective, sustainable practice. This mixed-methods design-based research study examined the efficacy of professional development and instructional coaching in enhancing teacher self-efficacy and supporting the implementation of SEL competencies in high school classrooms.

The researcher employed a comprehensive, five-stage design thinking framework (empathize, define, ideate, prototype, test) to develop and evaluate a structured eight-week professional development and coaching intervention targeting SEL …

Full Issue, The Mcnair Team

McNair Scholars Research Journal

No abstract provided.

The Path To Better Always Requires Something Different, An Nguyen Dds, Mph

Metro Denver Dental Society Articulator Magazine

Dr. An Nguyen examines dentistry’s shift toward the Complete Health Era, where oral health is fully integrated into chronic disease management and whole-body wellness. She outlines the interdisciplinary skills, including medical mindset, behavioral science, quality improvement and meaningful measurement, needed for dental teams to thrive in this new landscape. The article makes a compelling call for embracing fresh approaches, partnerships and mindsets to advance dentistry’s role in comprehensive health care.

Nonlinear Phase Space Analysis For Anomaly Detection In Ros 2 Communications: Detecting Man-In-The-Middle Attacks In Simulated Environments, William L. Locklier

Graduate Theses and Dissertations (2019 - present)

Robot Operating System 2 (ROS 2) marks a significant advancement over its predecessor through the transition from a centralized to a decentralized architecture, integrating the Data Distribution Service (DDS) to support real-time, scalable communications. Despite these improvements, inherent vulnerabilities in the ROS 2 communication stack continue to leave these systems exposed to sophisticated network-based attacks. This study leveraged nonlinear phase space analysis (NLPSA) as an intrusion detection system (IDS) to detect man-in-the-middle (MitM) attack anomalies in ROS 2 traffic. Grounded in Takens’ embedding theorem, NLPSA reconstructs the phase space of communication features and compares the resulting structure against a baseline …

Molecular Dynamics Simulations Of Biologically Relevant Interfaces: From Tear Film Lipid Layers To Rna Adsorption On Silica Surfaces., Mahbuba Khanom

Electronic Theses and Dissertations

Molecular dynamics (MD) simulation is an important tool in biochemical sciences for studying complex molecular processes and interfacial interactions at the molecular level. Biological interfaces play key roles in processes such as ocular lubrication and biomolecular adsorption. This dissertation studies interfacial phenomena involving two distinct yet conceptually related systems: the tear film lipid layer (TFLL) at the air–water interface at the surface of the human eye, and RNA adsorption on silica surfaces. These studies provide insight into how interfacial composition, structure, and environmental conditions affect larger-scale behavior. Atomistic MD simulations were used to model the TFLL. The TFLL is essential …

Impacts Of Biology Modeling Pedagogy On Student Cogitive And Non-Cognitive Elements Of Learning., Jessie K. Newhouse

Electronic Theses and Dissertations

This dissertation employed a quasi-experimental design used to investigate the use of a modeling pedagogy in high school biology. Modeling is a key element of the Science and Engineering Practices of the Next Generation Science Standards. While research of Model Based Pedagogy (MBP) in physics and chemistry is well established, the influence on biology instruction remains less understood. This research examined how MBP affected both cognitive and non-cognitive components of student learning compared to traditional biology instruction. Existing data collected by Dr. Kathy Malone in collaboration with Ohio State University (2016) were analyzed to study the effectiveness of the MBP. …

Thermal And Non-Thermal Mass Transport Effects In Plasmon-Assisted Electrochemistry., Md Al Amin

Electronic Theses and Dissertations

Plasmon-assisted electrochemistry has received attention due to its effects of hot charge carriers, photothermal heating, and enhanced electromagnetic field impact on electrochemical transformation. These effects have contributed to lowering the onset potential and increasing the reaction kinetics. Numerous studies have been employed to differentiate the effect of photothermal heating from hot charge carriers on the electrochemical reaction. Most of these studies have been employed to measure and quantify the photothermal heating effects at equilibrium temperature; however, localized heating from the incident light does not result in homogeneous heating across the electrochemical cell. Many studies investigating the photothermal heating effect in …

A Persistent Homology Framework For Scrna-Seq: Assessing Clustering Robustness And Quantifying Preprocessing And Integration Effects On Topological Features., Jonah Daneshmand

Electronic Theses and Dissertations

As single-cell RNA sequencing (scRNA-seq) data expands, robust methods for integrating diverse datasets are critical. This dissertation applies Persistent Homology (PH), a technique from Topological Data Analysis (TDA), to a collection of scRNA-seq datasets spanning eight tissue types to quantify how data integration affects topological features and biological interpretability. We assessed global topological structure using Betti curves, Euler characteristics, and persistence landscapes across raw, normalized, and integrated data representations. Our analysis revealed a performance inversion: while conventional methods excelled on unintegrated data, high-granularity topological methods, particularly those sensitive to global data structure, became superior after integration. This suggests a synergy …

Controlling Selectivity In Electrocatalytic Co2 Reduction With An External Magnetic Field., Nawaraj Karki

Electronic Theses and Dissertations

My dissertation describes how to alter the speciation and concentration of molecules at the electrode-electrolyte interface, and how those alterations affect reactivity and selectivity. This dissertation presents two distinct approaches to control the mass transport of neutral molecules such as carbon dioxide (CO₂) at the electrode-electrolyte interface by using an external magnetic field. The first finding demonstrates that magnetic fields indirectly affect the mass transport of target analytes such as CO₂ molecules by selectively interacting with charged species, such as hydroxide ions (OH^-). Such interaction induces magnetohydrodynamic (MHD) effects, which generate localized hydrodynamic flow and …

Preparing Confident Elementary Mathematics Teachers: Addressing Anxiety, Building Fluency, And Strengthening Practice., Amber Diamond Pendleton

Electronic Theses and Dissertations

This dissertation, presented in three articles, examines how elementary preservice teachers (PSTs) experience and develop as mathematics learners and future educators when methods coursework deliberately integrates mathematical reasoning with affective supports. Collectively, the studies investigate how research-informed instructional design may help address mathematics anxiety (MA), mathematics teaching anxiety (MTA), procedural fluency, and instructional practice. The first article, written for practitioners and elementary mathematics teachers, illustrates how well-established instructional routines, such as number talks and student work analysis, can be facilitated to support procedural fluency in multiplication. Using classroom vignettes, this article highlights instructional moves that make structure visible, promote strategy …

Plasma-Enhanced Carbon Nanomaterial Synthesis: A Pathway To Reducing Greenhouse Gasses And Carbon-Based Waste., Zane Ronau

Electronic Theses and Dissertations

This research leveraged incorporation of capacitively coupled radio frequency plasma into chemical vapor deposition (CVD) for a reduction in the temperature requirements [a reduction of energy barrier] needed for the conversion of methane (CH₄), carbon dioxide (CO₂), and various carbon-based-waste to produce value-added carbon nanomaterials. An array of catalysts and catalyst supports were employed to optimize the synthesis of graphitic carbon under various gas environments, temperatures and pressures. The nanomaterials synthesized after fine tuning the growth parameters included graphene, carbon nanotubes (CNT), carbon microtubes and carbon nanocages with a variety of properties. Raman Spectroscopy was used …

Direct And Satellite-Based Quantification Of Greenhouse Gas Fluxes In Small Ponds., Mark Christopher Tierney

Electronic Theses and Dissertations

As evidenced by their historic losses due to anthropogenic activities, wetlands are undervalued ecosystems that provide numerous ecosystem services, from recreational opportunities to carbon (C) storage. However, these wetlands are also the largest natural source of atmospheric methane (CH₄). Additionally, small water bodies (< 10,000 m²) are disproportionately large emitters relative to larger lakes and reservoirs. As construction and restoration efforts proceed, it is crucial to identify wetlands that need restoration and to understand the factors driving both greenhouse gas (GHG) fluxes and the C balance of these systems. This dissertation investigates the drivers of greenhouse gas fluxes …

A Comparision Of Teachers' Ratings Of Published Versus Ai-Generated Descriptions Of Evidence Based Practices In Education., Lora T. Hall

Electronic Theses and Dissertations

The persistent gap between educational research and classroom practice continues to limit teachers’ use of evidence-based practices (EBPs), despite strong empirical support and federal mandates encouraging their implementation. A key barrier to closing this research-to-practice gap is the limited accessibility, usability, and perceived relevance of traditional research dissemination formats. With the rapid rise of artificial intelligence (AI) tools capable of summarizing and restructuring complex information, this study examined whether AI-generated practitioner-oriented descriptions of an EBP would be rated differently from a published practitioner article on the same practice. Using an experimental cross-sectional survey design, 70 in-service teachers were randomly assigned …

Synthesis, Characterization, And Chemical Reactivity Of Calcium-Alginate Hydrogel Beads Containing Metal Nanoparticles And Nanoclusters., Rajiv Kumar Singh

Electronic Theses and Dissertations

This dissertation explores the synthesis, stability, and reactivity of various metal nanoparticles (NPs) and nanoclusters (NCs) of varied size and stabilizers contained within millimeter-sized calcium alginate (Ca-Alg) hydrogel polymer beads. Hydrogel beads synthesized by combining sodium alginate with Au or Ag NPs stabilized with trisodium citrate (Cit) and adding dropwise into a 4.0 M Ca²⁺ solution remained stable and contained within the beads. Those synthesized Au, Pd and AuPd NCs stabilized with glutathione (SG) became partially released from the hydrogel within a day. The synthesis of beads containing aggregated Cit Au NPs occurs by inducing aggregation with tetrakis(hydroxymethyl) phosphonium …

The Important Of Female Coaches: What Barriers They Face, Why They Stay, And What Can Be Done To Attract More., Hayley E. Yourous

Electronic Theses and Dissertations

After the passage of Title IX, there has been an increase in the number of females participating in sports; however, the same cannot translate to women in coaching or leadership positions (Acosta & Carpenter, 2014; Hart et al., 1986; LaVoi & Baeth, 2018). The purpose of this hermeneutic phenomenological study was to explore the lived experiences of females who had served as head coaches in the high school setting with at least eight years of experience as a head coach. The NCAA (2022) reported in 2020 that female coaches accounted for 41.3% of female teams' head coaches, both intercollegiate and …

Alkali-Silica Reactivity And Ionic Transport In Mortar With Hydrophobic Inclusions., Isaac Offei

Electronic Theses and Dissertations

Alkali-silica reaction (ASR) causes extensive damage to concrete infrastructure worldwide, with traditional mitigation strategies increasingly constrained by supplementary cementitious material (SCM) supply limitations. This dissertation investigates an innovative approach to ASR prevention through strategic application of hydrophobic materials to modify moisture and ionic transport pathways in cement mortars. The research employed a comprehensive three-objective experimental program using highly reactive aggregates and three hydrophobic materials: hexamethyldisilazane (HMDS)-treated fumed silica, silane-based emulsion, and silane-based crème. The first objective demonstrated the feasibility of hydrophobic aggregate surface modification, achieving 46% and 38% reductions in ASR expansion for washed and non-washed hydrophobic aggregates, respectively. Microstructural …

Articulator Volume 31, Issue 4

Metro Denver Dental Society Articulator Magazine

The 4^th Quarter 2025 of the MDDS Articulator Magazine offers a preview of the 2026 Rocky Mountain Dental Convention, taking place January 22–24 in Denver. The collection spotlights RMDC speakers and the future of dentistry, from the rise of AI and the shift toward integrated whole-health care to the hidden challenges of chronic illness, and a commitment to preserving natural dentition. The articles challenge dental professionals to rethink assumptions, embrace interdisciplinary collaboration and adopt more personalized and evidence-driven approaches to care.

El Poder Del Bilingüismo Y La Ciencia, Isabella Winslow

World Languages and Cultures

This project is an explanation of the importance of bilingualism, science, and our responsibility as humans within this environment. As living beings on this planet, we have a responsibility to respect and protect it. Over the course of the last several hundred years, we humans have made countless advancements. We have created unimaginable technology and discovered incredible resources produced by the land. However, in the process of doing so, we have damaged and continue to damage our environment. Reefs in the ocean have been bleached by increases in acidity, thousand year old glaciers have melted, forests have been destroyed by …

Exploring Online Teaching Self-Efficacy Among University Faculty Members During The Period Of Covid-19 Pandemic, Sarah Alamri

All-Inclusive List of Electronic Theses and Dissertations

The purpose of this study is to examine faculty’s perceptions of their self-efficacy regarding online teaching and some variables that may affect online teaching efficacy. A quantitative survey was administered to examine whether three faculty variables (online teaching experience, professional development experience, and COVID-19) predict a significant portion of the variance in faculty self-efficacy in online teaching on four subscales: student engagement, instructional strategies, classroom management, and teachers’ computer use. Faculty participants were recruited from King Khalid University in the Kingdom of Saudi Arabia. Data were collected using a web-based survey adapted from Robinia (2008). The data collected in this …

Exploring Teacher Beliefs And Perceptions About Teaching Reading, And Self-Efficacy For Implementing Reading Instructions, Richmond Osei Amakye

All-Inclusive List of Electronic Theses and Dissertations

Reading proficiency among learners at the elementary school level remains a national concern despite several decades of research, investments, and policy reforms aimed at improving literacy outcomes. The Science of Reading (SoR) framework, grounded in decades of interdisciplinary research, emphasizes explicit, systematic, and evidence-based instruction across five core components — phonemic awareness, phonics, fluency, vocabulary, and comprehension. This study examined elementary teachers’ beliefs about teaching reading, perceptions of the SoR, and self-efficacy in implementing reading instruction. Quantitative data were collected from teachers in west-central Indiana via an online survey that measured their beliefs about teaching reading, perceptions of SoR, self-efficacy …

Cross-Modal Prompting For Multi-Class Visual Anomaly Localization, Duncan F. Mccain

All Theses

Visual anomaly detection is a technology that uses computer vision to automatically identify defects or irregularities in images, such as cracks, scratches, or discolorations on manufactured products. Unsupervised visual anomaly detection does this without needing examples of those defects during the training process. This "unsupervised" approach is crucial in industries like manufacturing, automotive, electronics, and pharmaceuticals, where ensuring product quality is essential for safety, reliability, and cost efficiency. For instance, it helps spot flaws in circuit boards, fabrics, or medical pills during production lines, preventing faulty items from reaching consumers. By reducing manual inspections, it saves time and resources, benefiting …

Onset Of Strong Iceland-Scotland Overflow Water 3.6 Million Years Ago, Matthias Sinnesael, Boris Theofanis Karatsolis, Paul N. Pearson, Anne Briais, Sidney R. Hemming, Leah J. Levay, Tom Dunkley Jones, Ying Cui, Anita Di Chiara, Justin P. Dodd, Deepa Dwyer, Deborah E. Eason, Sarah A. Friedman, Emma Hanson, Katharina Hochmuth, Halima E. Ibrahim, Claire E. Jasper, Saran Lee-Takeda, Danielle E. Leblanc, Melody R. Lindsay, David D. Mcnamara, Sevasti E. Modestou, Margaret A. Morris, Bramley J. Murton, Suzanne Oconnell, Gabriel Pasquet, Sheng Ping Qian, Yair Rosenthal, Sara Satolli, Takuma Suzuki, Thena Thulasi, Bridget S. Wade

Department of Earth and Environmental Studies Faculty Scholarship and Creative Works

North Atlantic Deep Water (NADW), the return flow component of the Atlantic Meridional Overturning Circulation (AMOC), is a major inter-hemispheric ocean water mass with strong climate effects but the evolution of its source components on million-year timescales is poorly known. Today, two major NADW components that flow southward over volcanic ridges to the east and west of Iceland are associated with distinct contourite drift systems that are forming off the coast of Greenland and on the eastern flank of the Reykjanes (mid-Atlantic) Ridge. Here we provide direct records of the early history of this drift sedimentation based on cores collected …

Environmental Justice In Indigenous Communities: The Disproportionate Effects Of Environmental Contamination, Rae Cade, Danlin Yu, Charles Knoble, Kyle Whyte, Pankaj Lal, Cortni Borgerson

Department of Earth and Environmental Studies Faculty Scholarship and Creative Works

Indigenous communities in New Jersey, New York, and Pennsylvania (referred to as the northeastern United States) face disproportionate environmental pollution, with mortality rates 60 % higher than their white counterparts –an inequity that extends beyond formal recognition categories. While previous research has revealed pollution from facilities that cause severe health issues in Indigenous communities, broad geographic studies examining the spatial correlation between Environmental Justice (EJ) indicators and Indigenous populations remain limited. This study addresses this gap by examining contamination patterns across the northeastern United States, focusing on Superfund sites, drinking water violations, oil spills, and natural gas releases. Our analysis …

A Hedonic Analysis Of Combined Sewer Overflows (Csos) In Northern New Jersey, Taylor Wieczerak, Pankaj Lal, Pralhad Burli, Benjamin Barnett Witherell, Erik Lyttek, Bernabas T. Wolde, Ava Distaso

Department of Earth and Environmental Studies Faculty Scholarship and Creative Works

Significant water pollution caused by flooding due to heavy precipitation and extreme weather events has become a considerable problem, and changing weather patterns and sea level rise attributable to global climate change stand to further exacerbate the issue. During heavy precipitation events, combined stormwater and untreated sewage may be diverted to adjacent water bodies via combined sewer overflows (CSOs), resulting in contamination and water pollution that can be harmful to human and environmental health. Though water quality effects of CSO discharges have been studied, the socio-economic aspects of this infrastructure have not received much scientific attention. This study provides an …

Millennial-Timescale Thermogenic Co2 Release Preceding The Paleocene-Eocene Thermal Maximum, Shijun Jiang, Ying Cui, Yasu Wang, Maurizia De Palma, B. David A. Naafs, Jingxin Jiang, Xiumian Hu, Huaichun Wu, Runjian Chu, Yangguang Gu, Jiuyuan Wang, Yizhou Huang, Miquela Ingalls, Timothy J. Bralower, Shiling Yang, James C. Zachos, Andy Ridgwell

Department of Earth and Environmental Studies Faculty Scholarship and Creative Works

Geologic records support a short-lived carbon release, known as the pre-onset excursion (POE), shortly before the Paleocene-Eocene Thermal Maximum (PETM; ~ 56 Ma). However, the source and pace of the POE carbon release and its relationship to the PETM remain unresolved. Here we show a high-temporal-resolution stratigraphic record spanning the POE and PETM from the eastern Tethys Ocean that documents the evolution of surface ocean carbon cycle, redox and eutrophication, confirming the global nature of the POE. Biomarkers extracted from the sedimentary record indicate a smaller environmental perturbation during the POE than that during the PETM in the eastern Tethys …

Athletic Participation Among Students And Its Correlation To Increased Outcomes In Academic Performance, Benjamin Carl Anderson

All-Inclusive List of Electronic Theses and Dissertations

This quantitative study investigated the correlation between student participation in athletic-based extracurricular activities and academic performance among high school students in rural Indiana. The research sought to determine whether athletic involvement contributes to academic success indicators such as PSAT and SAT scores, and school attendance. The study looked at how athletics can serve as a lever for improving academic outcomes and supporting students in meeting the criteria for postsecondary readiness. Key research questions explored the influence of gender, ethnicity, grade level, and attendance on academic performance within the subset of students participating in athletics. A review of the literature supported …

Pathways To Progress: Understanding Gender Gaps Across Life Stages In The Asean Region, Debbie Wong, Jacqueline Cheng, Elizabeth Cassity, Jeaniene Spink, Payal Goundar, Jeffery H. Marshall

International Education Research

The ASEAN region continues to grapple with some of the world’s most pronounced disparities in educational outcomes. Addressing foundational learning gaps and promoting equity and inclusion for girls, women and marginalised groups remains a central priority in both educational improvement and labour market reform agendas regionally and internationally. This report presents new insights into the factors shaping human development outcomes for girls, women and marginalised groups in the ASEAN region. It supports the priorities under the Initiative for ASEAN Integration (IAI), which aims to reduce development disparities among ASEAN member states. Grounded in case studies from the newer ASEAN member …

Georgia Teachers’ And Leaders’ Perceptions Of Teacher Evaluations, Jessica Okelley

Dissertations

This research is a quantitative, non-experimental study that analyzes teachers’ and leaders’ perceptions of teacher evaluations in Georgia. The goals were to identify similarities and differences in teachers’ and leaders’ perceptions and to determine what factors may contribute to any identified differences. The study was conducted in a high-performing, suburban school district using two similar surveys and Likert scale questions to assess levels of agreement with various statements about the teacher evaluation process. This work was rooted in Self-Determination Theory and Postpositivism.

The study found that teachers and leaders have several common perceptions, like a general disbelief in evaluations’ capacity …

Ai-Optimized Resource Management In Next-Gen Wireless Networks, Fatemeh Lotfi

All Dissertations

Next-generation wireless networks must deliver highly adaptive, scalable, and intelligent connectivity to satisfy the heterogeneous demands of emerging services, including enhanced mobile broadband, massive machine-type communications, and ultra reliable low latency applications. The Open Radio Access Network (O-RAN) paradigm has emerged as a key enabler of this vision, introducing openness, virtualization, and artificial intelligence (AI)-driven control into the RAN ecosystem. O-RAN’s disaggregated architecture facilitates multi-vendor interoperability and empowers intelligent management through the RAN Intelligent Controller (RIC). However, achieving real-time, autonomous, and generalized optimization in such a dynamic environment remains a significant challenge due to its distributed nature, non-stationary traffic, and …