Digital Commons Network^™

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 …

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 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 …

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 Critical Discourse Analysis Of Community College Presidential Job Announcements And The American Association Of Community Colleges Competencies For Community College Leaders, Leslie M. Boon

Educational Leadership & Workforce Development Theses & Dissertations

Women are overrepresented as students and employees of community college, yet they are underrepresented in presidential leadership roles. Prior research has examined the career trajectories and experiences of women aspiring to community college presidencies; however, less research has examined how discourse shapes expectations of leadership. Because community colleges have been described as gendered, the language used to describe leadership competencies may reinforce gendered assumptions about effective leadership. The purpose of this study was to examine the discourse of community college presidential job announcements and the American Association of Community Colleges’ (AACC) Competencies for Community College Leaders (4th edition) to examine …

Student Perceptions Of The Community Of Inquiry In Online Human Anatomy And Physiology Discussion Boards Using 2-D And 3-D Anatomical Models, Timothy J. Mcguire

EVMS School of Health Professions Theses & Dissertations

Online human anatomy and physiology (HA&P) courses require students to learn complex anatomical content outside of a physical laboratory environment, a challenge that may be supported by enhancing students’ perceptions of collaborative learning (CL) through the community of inquiry (CoI) framework. This convergent parallel mixed-methods study examined participants’ perceptions of the CoI framework during two discussion board (DB) activities in an online, asynchronous, noncredit HA&P I study course at a midwestern community college.

Participants were recruited via convenience sampling and randomly assigned to one of two instructional sequence groups (2-D→3-D or 3-D→2-D) to complete two DB activities requiring annotation of …

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 …

Identifying Professional Development Needs Of Deans At California Community Colleges, Matilda D. Chavez

Educational Leadership & Workforce Development Theses & Dissertations

This quantitative, descriptive study examined the professional development needs of deans, associate deans, and directors in the California Community Colleges System. Using the American Association of Community Colleges leadership competencies, the study analyzed how mid-level leaders rated the importance of leadership tasks and their ability to perform them. It also compared results by gender, race or ethnicity, years in the role, district type, and preferred professional development methods.

Data were collected with a 47-item, fixed-format survey using Qualtrics. The sample was a nonprobability quota drawn from 17 California community colleges (N = 71). Descriptive and inferential statistical analyses, including t-tests …

How Women Community College Department Chairs Experience Leadership Work, Stephanie L. Goldenberg

Educational Leadership & Workforce Development Theses & Dissertations

Women remain underrepresented in higher-level administrative roles in community colleges, a disparity shaped by systemic barriers, limited mentoring, and inconsistent pathways into leadership. Department chairs occupy a critical midlevel position that influences faculty, students, and the implementation of institutional priorities, yet little is known about how women experience this role or how their pathways into leadership take shape. The purpose of this qualitative study was to explore how women community college department chairs experience leadership work and what experiences influence their entry into leadership roles. Guided by feminist standpoint theory and grounded in narrative inquiry methodology, this study centers the …

Assessing Shifts In Leadership Language: A Comparative Study Of The Aacc Competencies For Community College Leaders, Bethany A. Siehr

Educational Leadership & Workforce Development Theses & Dissertations

Leadership competency frameworks are widely used in community colleges to guide hiring, professional development, and succession planning. However, little is known about how leadership expectations evolve within these frameworks over time or how revisions reflect shifts in what the field values as legitimate leadership preparation. This study examined longitudinal change in the American Association of Community Colleges (AACC) Competencies for Community College Leaders across four editions published in 2005, 2013, 2018, and 2022.

Using a structured comparative document analysis, the study applied an extraction grid, a modification classification framework, and the Semantic Aspect Scale to identify additions, deletions, augmentations, separations, …

Perceptions Of The Community Eligibility Provision (Cep) Program, Angela H. Napier

Educational Leadership & Workforce Development Theses & Dissertations

This study examined how educators and families perceive and experience the Community Eligibility Provision (CEP) and its influence on student attendance, engagement, well-being, and school climate within one public school division. While prior research has established quantitative links between universal meal programs and academic outcomes, limited research has explored how stakeholders interpret and experience these effects in practice. Addressing this gap, this study employed a convergent mixed-methods design, integrating archival attendance data, surveys, and semi-structured interviews with principals, assistant principals, teachers and families. Quantitative findings revealed modest but inconsistent changes in absenteeism following the CEP implementation, while qualitative findings provided …

"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, …

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 …

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 …

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. …

The War Poetry Map Project: Exploring The Physical And Emotional Geography Of Conflict, Colin D. Halloran

English Theses & Dissertations

There can be no question that war is shaped by and has shaped cultures, and yet as an object of study it is rarely looked at from a cultural studies perspective. It is the great epics of war that form the cornerstones of Western literary tradition. It is the impact of war that gave rise to fields like trauma and memory studies. It is the propaganda produced, the hijacking of cultural industries, that help perpetuate wars. The War Poetry Map Project and accompanying written dissertation seek to move beyond historical and political contexts and view war as a cultural object. …

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. …

Objectification And Discrimination Among Bi+ Women: Body Image Outcomes And The Moderating Role Of Relationship Type And Partner Gender, Kaitlyn E. Ryan

Psychology Theses & Dissertations

Objectification theory posits that being sexually objectified by others leads to a greater likelihood of engaging in body surveillance behaviors, which in turn is associated with higher body shame (Fredrickson & Roberts, 1997). Prior research has identified both objectification and anti-bisexual discrimination as significant predictors of body surveillance and body shame among bi+ women (i.e., bisexual, pansexual, queer) (Brewster et al., 2014; Salim et al., 2024). No studies, however, have considered the unique experiences of romantically partnered bi+ women, including the potential moderating effects of partner gender and relationship type. The present study examined whether romantic relationships are protective for …

The Role Of Autonomy And Motivation On Teacher Retention: A Mixed Methods Study, Jordan Overton

STEMPS Theses & Dissertations

Teacher retention remains a persistent concern in the United States, with nearly 13% of classrooms unfilled by licensed teachers. Grounded in self-determination theory and basic psychological needs theory, this mixed methods sequential explanatory study examined the relationship between teacher autonomy, motivation, and intentions to leave, while also exploring the contextual factors that shaped teachers’ perceptions of autonomy within their work environments.

In the quantitative phase, survey data were collected from 123 elementary and middle school teachers across three school divisions in Southeastern Virginia. Measures included teacher autonomy, work motivation, and intentions to leave one’s school or division and the teaching …

Profiles Of Science Students’ Achievement Emotions: An Exploration Of Motivational Antecedents And Persistence Outcomes Over Time, Arianna White-Levatich

Educational Leadership & Workforce Development Theses & Dissertations

This is a longitudinal study focused on the importance of students’ beliefs and emotions for their persistence in science majors. The primary goals of this study are threefold. First, to examine how undergraduate science students’ academic achievement emotions combine into profiles across two time points in the context of introductory Chemistry and Biology Courses. Second, to examine how students’ beliefs and perceptions of belonging relate to profile membership and to the likelihood that students will transition between profiles of emotions over time. Third, to evaluate how emotion profile membership and transition are related to students’ intentions to pursue science and …

Social Capital As An Intervening Explanatory Mechanism Linking Socioeconomic Status And Deliberative Decision-Making In Citizen Advisory Boards In California Municipalities, Christopher Gerry

School of Public Service Theses & Dissertations

Citizen advisory boards (CABs) are widely used in local government as institutional mechanisms for participatory governance and public input. While these bodies are intended to promote inclusive and deliberative decision-making, persistent socioeconomic inequalities raise concerns about whether CABs mitigate or reproduce disparities in participation and influence. This dissertation examines how socioeconomic status (SES) shapes deliberative decision-making within CABs and whether this relationship operates indirectly through board-level social capital.

Integrating perspectives from participatory governance, deliberative democracy, and social capital theory, the study conceptualizes deliberative decision-making as a collective, board-level process shaped by relational and institutional dynamics rather than individual attributes alone. …

Ptsd Symptoms And Cannabis Use Among College Students: Examining The Role Of Trauma-Related Cannabis Use To Cope, Christopher T. Latourrette

Psychology Theses & Dissertations

Individuals with posttraumatic stress disorder (PTSD) are more than four times as likely to develop cannabis use disorder (CUD) as those without PTSD. This common co-occurrence is often interpreted through a self-medication framework in which cannabis is used to manage PTSD symptoms. Prior work has relied heavily on veteran samples, includes measures of cannabis coping that are not specific to PTSD, and has most commonly examined total PTSD symptom severity, limiting precision in understanding how discrete symptom clusters relate to cannabis outcomes. The present study sought to examine associations between individual PTSD symptom clusters and cannabis use severity and to …

Dissecting The Etiology Of Alcohol Use Disorder By An Integrative Heritable Component Approach, Ivy Garrenton

Computer Science Theses & Dissertations

Alcohol Use Disorder (AUD) is a pervasive condition characterized by complex interplay among genetic, phenotypic, and environmental factors. Although previous studies have identi fied genetic loci associated with alcohol consumption, these efforts have not captured the genetic heterogeneity and gene-environment interactions underlying AUD pathogenesis. To address this critical gap, we developed a novel statistical methodology that integrates phenotypic, genotypic, and environmental data through an environmentally modified Genetic Relationship Matrix (GRM) to derive AUD-related traits with enhanced heritability.

This approach demonstrated superior performance in both simulated and real-world datasets. Traits derived using the environmentally modified GRM exhibited significantly higher estimated heritability …

Assessing Stakeholders’ Perceptions Of Organizational Effectiveness Through A Multidimensional Theoretical Model: An Interpretive Phenomenological Qualitative Case Study, Andrea M. Paul

School of Public Service Theses & Dissertations

Nonprofit organizations play a fundamental role in meeting community needs when government resources are limited or nonexistent. For decades, scholars and practitioners have recognized the importance of nonprofit-government partnerships for effective public service delivery. This study examines faith-based organizations as a specific type of hybrid nonprofit organization. As social, economic, and environmental challenges intensify, the need for community-based programs led by faith-based organizations also increases. These organizations are working to combat several of society's wicked problems, including but not limited to homelessness, food insecurity, drug addiction, youth and family services, and climate change. Nonprofit sector performance measurement is often recognized …

Cultural Memory And Colonial Legacies: The Pandemic Era In France, Kathryn (Kate) R. Cross

Graduate Program in International Studies Theses & Dissertations

In the twenty-first century, how are former colonial powers addressing colonial legacies? Amidst the massive social movements of the pandemic years and greater representations of a new generation of politicians in major elections, the global zeitgeist was increasingly characterized by representation of disenfranchised and previously silenced memories and narratives. These shifts, especially in France, are a sharp contrast to the unofficial historic policy of amnesia maintained regarding traumatic legacies and build on movements that began at the turn of the century. The environment has facilitated an increased ability for cultural products to create, shape, and sustain cultural memories of colonial …

The Physiology Of The Work: Chronic Stress, Allostatic Load, And Faculty Wellness In Counselor Education, Ajayla S. Evins

Counseling & Human Services Theses & Dissertations

Counselor educators embody multifaceted professional roles across teaching, supervision, research, leadership, and service, exerting a profound influence on the formation of counselors and the ongoing development of the profession (CACREP, 2024; Calley & Hawley, 2008). While wellness is recognized as a core professional value in counseling (ACA, 2014), research has focused almost exclusively on emotional and psychological dimensions, leaving the physiological consequences of chronic stress largely underexplored (Bovee, 2024; Faheem et al., 2025; Lewis et al., 2022). In neighboring fields, such as public health and medicine, chronic stress has been linked to dysregulation in cardiovascular, neuroendocrine, immune inflammatory, and metabolic …

Role Of Listeria Adhesion Protein In Monocyte-Associated And Extracellular Translocation Of Listeria Monocytogenes Across The In Vitro Placental Barrier Co-Culture Model, Ayesha Atique

Biological Sciences Theses & Dissertations

Listeria monocytogenes is a facultative intracellular foodborne pathogen capable of crossing the placental barrier, leading to miscarriage, stillbirth, and neonatal sepsis, and has a fetal/neonatal fatality rate of ~20–30%. Although the importance of canonical virulence factors such as Internalin A (InlA) and Internalin B (InlB) in L. monocytogenes crossing of the placental barrier has been demonstrated, clinical strains lacking functional canonical internalins have been reported to cause severe neonatal disease, suggesting additional mechanisms of placental translocation.

To investigate these virulence mechanisms, we adapted a physiologically relevant co-culture human placental barrier Transwell model composed of BeWo trophoblasts and primary human placental …

Extending The Job Demands-Resource Model In Classified Work Environments: A Longitudinal Analysis Of Job Demands, Resources, Job Satisfaction, And Retention Among Engineers, Gregory Gooden

Engineering Management & Systems Engineering Theses & Dissertations

The Job Demands–Resources (JD-R) model is a widely used framework for understanding how work conditions influence employee attitudes and retention-related outcomes. However, empirical evidence testing JD-R dynamics in classified technical work environments remains limited, particularly using longitudinal designs that account for structural constraints, nonrandom participation, and outcome-specific measurement challenges. Classified work is characterized by persistent demands, restricted flexibility, and security-driven limitations on available resources, raising questions about whether and how JD-R processes generalize to this context.

This study examines whether job demands and job resources predict subsequent job satisfaction and retention intent in a classified technical workforce using multi-wave longitudinal …

Bioengineering The Future Of The Human Species: H+’S Ideological Iterations Of Trans-/Posthumanity As Exemplified By Futurist Literary Texts = (Bio)Technological Solutions For (And/Or) Reification Of Systemic Inequities?, Marjorie E. Bomhower

English Theses & Dissertations

While humanity has, throughout our species’ history, endeavored to dream and create astonishing, and ever-evolving, (bio)technologies with the utopian ideals of bettering our day-to day lives and achieving greater longevity, our endeavors have (thus far) not only produced remarkable, beneficial advances in longevity and quality of life, but have also yielded devastating and dire outcomes; often at the cost and victimization of marginalized communities. This dissertation focuses on select (bio)technologies – particularly, those promoted by H+ (the most current and popular technoutopianist non-profit, “educational,” organization) – with an investigation of current and nascent (bio)technological evolutions, futurist literary texts, and critical/digital …