Digital Commons Network^™

Cognitive Digital Twin Operating System Forwayfinding In Vertical Smart Cities, Basil Adel Ismail Basbous

Theses

Vertically complex urban environments impose elevated spatial cognitive load on pedestrians, a  demand that static wayfinding infrastructure is structurally incapable of addressing. Smart cities  currently lack a formal cognitive navigation operating layer for managing pedestrian movement in  multi-level urban systems. This research introduces and evaluates a Cognitive Digital Twin  Operating System (Cognitive OS) — a city-scale adaptive navigation infrastructure integrating  Digital Twin environmental modelling, AI-driven route optimisation, real-time crowd intelligence,  and spatially embedded adaptive guidance to predict, manage, and reduce spatial cognitive load in  vertically complex environments. The study deploys AI-mediated human behavioral persona simulation as an independent methodological  contribution. …

Effect Of Geometry, Cell Size, And Carbon Fiber Reinforcement On The Charpy Impact Strength Of Additively Manufactured Tpms Lattice Structures, Ahmed Yousuf Mohammad Bin Yaroof (Alsuwaidi)

Theses

Scientific research indicates a growing utilization of lightweight, high-performance materials across various disciplines, including engineering, driven by the demands of modern technological advancements. Recent developments within these fields include the creation of advanced lattice structures through additive manufacturing (AM) processes. One such lattice structure is the triply periodic minimal surface (TPMS) structure. TPMS structures possess unique mechanical properties and energy absorption characteristics that distinguish them from conventional AM lattice structures. However, published research to date has largely focused on the quasi-static behavior of TPMS structures, with limited attention given to the impact performance of composite- reinforced TPMS structures. The purpose …

Investigation Of Machining (Drilling) Of Bio-Composite Reinforced With Jute Fibers Under Different Machining Conditions, Mohammed Abdul Mujeeb Ansari

Theses

This study investigates the drilling performance of jute fibre reinforced bio-composites under different machining conditions to reduce performance parameters like surface roughness, tool type and delamination damage (entry and exit). Jute composites were fabricated using a process called hand layup. Drilling experiments were carried out using full factorial method focusing on three parameters: Feed Rate (0.05mm/rev, 0.1mm/rev and 0.15mm/rev), Drill bit Type (Titanium Nitride-TiN, High Speed Steel-HSS and High-Speed Steel Cobalt HSS-Co) and Lubrication condition (Dry, Minimum Quantity Lubrication-MQL and Cryogenic-LN2). A total of 27 experimental trials were performed, and the responses were measured for each condition. Statistical analysis was …

Preparing Future-Ready Graduates For Technological And Workforce Transformations, Ghia El Dirani

Theses

The United Arab Emirates (UAE) is undergoing rapid economic transformation driven by technolog- ical innovation and national strategies such as Vision 2031 and UAE Centennial 2071, positioning STEM (Science, Technology, Engineering, and Mathematics) education as critical to building a knowledge-based economy. However, a persistent gap exists between the competencies developed in STEM higher education programs and the skills demanded by emerging sectors such as artificial intelligence, renewable energy, and advanced manufacturing. While the UAE has introduced pro- gressive education policies and invested in digital infrastructure, most curriculum reforms remain reactive and disconnected from long-term workforce projections. This research applies strategic …

Beyond Anomaly Detection: Classifying Attacker Automation Level From Ssh Honeypot Behavioral Signatures, Ashley Alt

Theses

The proliferation of AI-assisted offensive tools has introduced a new category of cyber attacker that combines the speed of automation with the adaptive reasoning previously associated only with skilled human operators. Despite the richness of behavioral data captured by SSH honeypots, existing analyses treat interaction logs primarily as evidence of malicious activity rather than as a dataset capable of distinguishing between attacker types. This thesis investigates whether human-driven, traditionally automated, and AI-assisted attackers produce distinguishable behavioral signatures within SSH honeypot interactions, and whether machine learning techniques can reliably classify attacker behavior from session-level features. A controlled experimental architecture was developed …

In-Context Retrieval For Molecules And Chemical Synthesis Pathways, Abhisek Dey

Theses

Contrastive learning methods require well-defined positive pairs, limiting their applicability to domains where complete, high-fidelity pairings are available. In practice, large-scale scientific corpora --including patents, publications, and web-scale data -- contain vast quantities of contextually relevant but incompletely paired samples that are discarded under standard training paradigms. In this work, we demonstrate that hard negative mining can be leveraged to construct pseudo-positive supervision signals from unpaired or partially paired data, enabling contrastive learning to exploit the full breadth of available corpora without sacrificing representational quality. Using a large-scale chemical drug patent corpus as a testbed, we train a cross-modal contrastive …

Tfeb Degradation Is Regulated By An Ikk/Β-Trcp2 Phosphorylation-Ubiquitination Cascade, Yan Xiong, Jaiprakash Sharma, Meggie N Young, Wen Xiong, Ali Jazayeri, Karl F Poncha, Ma Xenia G Ilagan, Qing Wang, Bei Gao, Hui Zheng, Nicolas L Young, Marco Sardiello

2020-Current year OA Pubs

Transcription factor EB (TFEB) is a master regulator of lysosomal biogenesis and cellular clearance pathways. TFEB activity is tightly controlled by multiple post-translational mechanisms, but the exact molecular mechanism controlling its stability has remained elusive. Here, we identify the IκB kinase (IKK) complex as a key regulator of TFEB protein stability through a phosphorylation-ubiquitination cascade. A high-content kinase inhibitor screen reveals that IKK inhibition increases TFEB protein levels, and genetic ablation of IKK components increases TFEB stability, upregulates lysosomal genes, and enhances lysosomal biogenesis and degradative capacity. Mechanistically, we show that IKK phosphorylates TFEB on a cluster of serine residues …

Sialidosis Type I: How To Alleviate Disabling Myoclonic Seizures? - A Multicenter Analysis Of Eight Cases And Review Of The Literature, Janina Gburek-Augustat, Shao Ching Tu, Marwan Shinawi, Isabel Alfradique-Dunham, Manouela Valtcheva, Et Al.

2020-Current year OA Pubs

OBJECTIVE: Sialidosis type I (ST-1) is an autosomal-recessive, very rare, progressive lysosomal storage disorder caused by pathogenic variants in NEU1. It is clinically characterized by progressive ataxia, myoclonic seizures (MS), bilateral tonic-clonic seizures (BTCS), and distinctive ophthalmological findings. Given the lack of curative options, in this study, we investigated symptomatic treatment strategies, with a particular focus on the efficacy of antiseizure medications (ASMs).

METHODS: We describe the clinical course of a patient followed from diagnosis to 18 years of age, and review seven additional cases from our cohort. In parallel, we conducted a narrative review of the literature (PubMed, January …

Draft Final 2025 Bpsou Subdrain Data Summary Report (Dsr), Pioneer Technical Services, Inc.

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Implementation And Impact Of The Transition Series For Senior Residents In Internal Medicine Residency, Abby Lindseth, Md

Abstracts, Posters, Presentations

No abstract provided.

Powell’S Overland Trip To The Grand Canyon, Daniel Styer

Faculty & Staff Scholarship

No abstract provided.

Downstream Effects Of Post Aerobic Digestion And Divalent Cation Treatment: Dewaterability, Phosphorus Mitigation, And Process Odors, Maya Marisol Quijano Garcia

Civil & Environmental Engineering Theses & Dissertations

This study evaluated post-aerobic digestion (PAD) with aeration, mixing, and divalent cation addition to improve phosphorus capture, dewaterability, and odor control in thermal hydrolysis process (THP)–treated anaerobic digestate at the Hampton Roads Sanitation District’s Atlantic Treatment Plant. A three-day PAD process was operated under constant air flow (5 LPM) and dissolved oxygen (DO)-setpoint (0.2 mg/L) aeration conditions with Ca(OH)₂ or Mg(OH)₂ dosing. Aeration and mixing alone increased polymer demand by 14–46 % relative to untreated influent, indicating enhanced extracellular polymeric substance release. Chemical conditioning partially mitigated this increase but did not restore polymer demand to baseline levels. Dewatered cake total …

Exploring System Wide Trust And Dependency Behavior Within An Aviation Environment, Austin Jackson

Psychology Theses & Dissertations

The present study examined the theory of system-wide trust within the context of a multi-tasking aviation environment. Previous research suggested that unreliable automation can negatively affect a human operator’s trust in reliable automation within the same system (Rice & Geels-Blair, 2010). However, previous studies have not looked at how trust develops in the context of a multi-tasking environment, nor how different types of errors may affect trust in and the use behavior of automation. The current study employed a 2 x 2 mixed design with drone reliability (60% reliable vs 90% reliable) and error bias (false alarm vs. miss errors) …

Pushing High-Performance Private Inference Towards Resource-Constrained Edge Clients, Xiangrui Xu

Computer Science Theses & Dissertations

The widespread adoption of Machine Learning as a Service (MLaaS) has enabled resource constrained edge clients, such as mobile and IoT devices, to leverage powerful deep learning mod els hosted on the cloud. However, this paradigm introduces critical privacy challenges regarding the client’s sensitive input data and the server’s proprietary model parameters. While cryptographic techniques like Homomorphic Encryption (HE) and Multi-Party Computation (MPC) enable Private Inference (PI), existing frameworks impose prohibitive computational and communication overheads that render them impractical for edge deployment. This dissertation introduces three novel frameworks—SPOT, LUTless, and PrivShap—to systematically address the efficiency bottlenecks of PI in edge …

Bridging Mission And Execution: Integrating Participatory Design In Early-Phase Mission Engineering For Stakeholder Alignment And Mission Clarity, Rafi Soule

Engineering Management & Systems Engineering Theses & Dissertations

This dissertation develops and evaluates an integration-centered approach to early-phase Mission Engineering that improves mission clarity under ambiguity. Stakeholder interpretations diverge, and interoperability constraints are not surfaced early. These conditions reduce mission clarity and weaken mission-to-system mapping readiness. The dissertation proposes an integration-centered approach that strengthens early mission framing through two complementary mechanisms: (1) a participatory design-inspired, artifact-first workflow that surfaces and repairs interpretation divergence, and (2) closed-corpus, RAG-enabled retrieval that grounds mission-to-system mapping in traceable evidence. The study was organized around a construct spine linking shared understanding, stakeholder alignment, and interoperability feasibility to mission clarity. A three phase mixed-methods …

Early Parenting Stress And Later Abuse Risk: Dyadic Mediation By Maternal And Paternal Negative Attributions, Jewelian N. Fairchild

Psychology Theses & Dissertations

Parenting stress and negative parental attributions are key contributors to child abuse risk. Early parenting stress may increase a parent’s risk of negatively appraising their child’s behaviors, which, in turn, may influence their likelihood of harsh or abusive parenting. Grounded in Social Information Processing (SIP) Theory, the present study explored how these processes evolve over time and differ between mothers and fathers. Specifically, this study investigated whether parental negative attributions mediated the relationship between early parenting stress and later abuse risk. A sample of 203 first-time mothers and 151 of their male partners were recruited prenatally as part of a …

Exploring The Physical Education Experiences Of Blind And Visually Impaired Hispanic Multilingual Learners In Integrated Settings, Sheyla G. Martinez-Rivera

Human Movement Studies & Special Education Theses & Dissertations

Although students with visual impairments (VI) are increasingly placed in integrated physical education (PE) classes (U.S. Department of Education, 2023), the embodied experiences of those who also identify as multilingual learners (MLs) and as Hispanics remain largely unexplored. This retrospective qualitative study examined how these students experience integrated PE during their K-12 education, focusing on how language and disability identities shaped their participation. Participants included seven Hispanic students, all MLs, and identified under the Individuals with Disabilities Education Act (IDEA) as blind or visually impaired. At the time of the study, participants were between 18 and 33 years old and …

"On The Same Rope": An Exploratory Study Of Staff Experiences At The Mountain Seed Foundation's Healing Base Camp Program, Jill C. Kivikoski

Counseling & Human Services Theses & Dissertations

Since the escalation of Russia’s invasion of Ukraine in 2022, Ukrainians have faced significant social and public health challenges, particularly among Service Members, Veterans, and their Families (SMVF), including disability, traumatic stress, and barriers to mental health care (Kostenko et al., 2024; Krasnodemska et al., 2023; O’Grady & Galouchka, 2023). Retreat based programs grounded in shared military identity may offer an accessible form of support (Barrett & Currin, 2024). Mountain Seed Foundation’s (MSF) Healing Base Camp (HBC) was developed to promote healing and resilience among Ukrainian SMVF (Mountain Seed Foundation, n.d.).

This qualitative dissertation used a single-case study design (Yin, …

A Transcendental Phenomenological Study Of The "Intervention Implementation Experience" With Department Chairs And Program Coordinators During A Performance Improvement, Courtney W. Schoolmaster

STEMPS Theses & Dissertations

Minimal research has been conducted on the experiences of department chairs and program coordinators with the implementation of performance improvement in learning outcome assessment. Focusing on a multidisciplinary college that offered associate degrees, technical diplomas, and certificates, located within the SACSCOC region, this transcendental phenomenology aims to understand the lived experiences of department chairs and program coordinators in a community college during the implementation/maintenance phases of a performance improvement initiative for the college’s program and general learning outcome assessment process.

This phenomenological study was conducted with eighteen department chairs and program coordinators, and two semi-structured interviews were conducted via Webex. …

Bug-In-Ear ECoaching To Enhance Parents' Use Of Embedded Learning Opportunities With Preschool-Age Children With Autism Spectrum Disorder, Aeshah Alturki

Human Movement Studies & Special Education Theses & Dissertations

The increasing prevalence of autism spectrum disorder (ASD) has heightened the need for effective communication interventions. Parents are key partners in intervention and, with appropriate support, can serve as effective intervention agents. However, parents often require ongoing support to implement evidence-based practices. The purpose of this study was to experimentally evaluate the effects of online Bug-in-Ear (BIE) eCoaching on parents’ fidelity of embedded choice-making during family routines with their preschool-aged children with ASD. This study also examined the generalization and maintenance, children’s communicative responses, and parents’ perceptions of the intervention. A single-subject nonconcurrent multiple baseline design across two parent–child dyads …

Education And Training In Water Operator Certification And Its Role In Water Utility System Performance, Heath A. Edelman

Educational Leadership & Workforce Development Theses & Dissertations

Access to safe and reliable drinking water is a foundational component of public health and environmental protection. The United States drinking water sector is highly regulated and increasingly challenged by workforce shortages, aging infrastructure, and variability in operator training requirements across states. Despite the federal mandate for operator certification under the Safe Drinking Water Act Amendments of 1996, empirical evidence on the effectiveness of certification policies in improving regulatory compliance outcomes remains limited.

This study examined the relationship between operator certification policies and drinking water compliance outcomes under the Safe Drinking Water Act, with particular attention to differences across violation …

Development Of A Benchmark Building Condition Index Utilizing Discrete Facility Subsets For Use In Risk Prioritization Analysis, Christopher A. May

Engineering Management & Systems Engineering Theses & Dissertations

Within the healthcare facilities management arena, key performance-based condition indices such as a calculated Building Condition Index (BCI) are currently utilized as a governing indicator of facility health and performance. However, BCI alone does not adequately support enterprise-level risk prioritization and fails to provide a validated facility-to-facility risk prioritization model. Assets within the same enterprise receiving similar sustainment funding experience different rates of degradation depending on asset type and construction age thus impairing the BCI rating scale. Statistical analysis of facility metrics indicates a strong correlation between facility degradation drivers and prediction of a subset-based benchmark BCI. The research validates …

A Hermeneutic Phenomenological Case Study On Principals’ Attitudes And Practices Toward The Inclusion Of Students With Disabilities, Charlene Marie Briggs

Educational Leadership & Workforce Development Theses & Dissertations

Despite decades of federal legislation mandating inclusion, many schools still struggle to serve students with disabilities effectively, resulting in persistent achievement gaps and limited postsecondary success. Research consistently identifies principals’ attitudes and practices as the most influential factor in inclusive school success, yet existing studies have examined these elements in isolation rather than as interconnected parts of a school system. This hermeneutic phenomenological case study explored how ten Virginia elementary school principals understood and enacted their attitudes and leadership practices toward the inclusion of students with disabilities in their schools. The study used van Manen’s (2014) hermeneutic phenomenology to understand …

The Leadership Lens: A Phenomenological Study Of The Lived Sensemaking Experiences Of School Leaders Implementing Virginia's New Standards Of Accreditation And Accountability, Paul M. Wilson Jr.

Educational Leadership & Workforce Development Theses & Dissertations

This phenomenological study exposes the complex cognitive and organizational processes school leaders navigate as they translate high-stakes state mandates into localized action. By examining the implementation of Virginia’s revised Standards of Accreditation and Accountability (SOA), this study challenges the prevailing managerial paradigm that views policy implementation as a linear, mechanical execution of directives. Instead, grounded in sensemaking theory and SDT, this research conceptualizes implementation as a situated and interpretive act shaped by leaders’ prior experiences, beliefs, and psychological needs for autonomy, competence, and relatedness.

Using a qualitative phenomenological design, data were collected through semi structured interviews with 12 school and …

A Theoretical Framework For Recursion In Complex System Governance, Gilbert Goddin

Engineering Management & Systems Engineering Theses & Dissertations

The purpose of this research was to construct an original theoretical framework for understanding recursion in Complex System Governance (CSG), grounded in the propositions and axioms of systems theory and management cybernetics. This framework addresses a research gap for cybernetic recursion relating to the governance of complex systems. Leveraging the CSG framework (Keating & Katina, 2019; Keating, 2022), holonic principles (Koestler, 1970; Mella, 2009), management cybernetics (Beer, 1979; Beer, 1984; Beer, 1995), and metacybernetics (Yolles, 2021; Yolles & Fink, 2015c; Yolles & Frieden, 2021), recursion is theorized as a governable capability, whereby metasystemic governance anticipates emerging complexity and purposefully regulates …

The Lived Experiences Of Master's Level Counselors In Professional Counseling Association Leadership, Catalina R. Kraft

Counseling & Human Services Theses & Dissertations

Leadership and advocacy are essential for all counselors (Lewis, 2022; McKibben, 2016; Paradise et al., 2010; Sweeney, 2022). However, within research and professional counseling associations, there appears to be a bias in which counselor educators are the expected, default leaders within the counseling profession (Burns, 2015; Kleist, 2018; Speciale & Goodrich, 2020). While counselor educators may have experience as counselors, they primarily work in academia, so their experiences do not authentically represent the needs of professional counselors. Counseling leaders need to represent and understand the people they serve: counselors. Therefore, this study sought to understand the lived experiences of master’s …

Perceptions Of Virginia Dentists And Dental Hygienists Towards Emerging Alternative Dental Hygiene Workforce Provider Models, Lauren B. Mangum

Dental Hygiene Theses & Dissertations

Background: A perceived shortage of dental hygienists in the United States has been linked to delays in preventive care and concerns about declining oral health outcomes. In response, some states have proposed alternative pathways permitting internationally trained dentists, dental students, and oral preventive assistants (OPAs) with limited or inconsistent education requirements to provide dental hygiene services. Limited evidence exists regarding whether these strategies would effectively address access to care and workforce challenges. Concerns have also been raised about the potential effects of expanding scope of practice for providers with limited education or training on patient safety and quality of care. …

Electromyography, Prosthetic Properties, And Running Biomechanics In Recreationally Active Persons With Lower Extremity Amputation, Paige M. Agnew

Rehabilitation Sciences Theses & Dissertations

Lower extremity loss affects nearly 150,000 individuals in the United States yearly yielding extreme health care costs annually. Typically, prosthetic devices are prescribed for 5-8 years despite known changes to an individual’s gait as time progresses. Patients can expect to undergo approximately 8-12 weeks of gait retraining to improve their comfort and efficiency. Biomechanical changes occur when running with a specific running prosthetic including considerable biomechanical and neuromuscular interlimb asymmetries and alterations in loading patterns. The purpose of this dissertation was to investigate the biomechanical demands for lower extremity prosthesis users during running. The first study synthesized peer reviewed evidence …

Behavioral, System, And Informational Cyberattacks: A Human-In-The-Loop Driving Simulator Experiment, Samuel Petkac

Psychology Theses & Dissertations

Advanced technologies such as sensors and AI/ML algorithms have enabled increasing levels of automated driving system that detects, responds, and even predicts changes in a driving environment supported by wireless connectivity to nearby vehicles and infrastructure. Such connected and automated vehicles (CAVs) can be particularly vulnerable to cyberattacks targeting not only infotainment systems but also firmware and other applications, critically compromising driver safety. As we anticipate a “mixed” traffic where vehicles with various levels of automated technologies share the road for the foreseeable future, it is urgent to systematically examine types of possible cyberattacks and control human behaviors in such …

Microstructural And Thermal Studies Of Niobium On Copper Fabricated By Sputtering And Multicharged Ion Deposition, Md Obidul Islam

Electrical & Computer Engineering Theses & Dissertations

Niobium-coated copper (Nb/Cu) superconducting radiofrequency (SRF) cavities are a promising alternative to bulk niobium cavities for next-generation particle accelerators due to their reduced material cost and superior thermal conductivity of the copper substrate. However, cavity performance is fundamentally limited by the microstructural quality of sputtered Nb films and thermal transport across the Nb/Cu interface. Reduced thermal diffusivity in thin films and high interfacial thermal resistance contribute to localized heating and performance degradation under high RF fields. This dissertation addresses these challenges through a combined experimental and methodological investigation of thermal transport in Nb thin films, focusing on interface engineering using …