Digital Commons Network^™

Toward The Professionalization Of Executive Coaching: A Delphi Study Of The Requisite Knowledge, Skills, And Abilities For Coaching Executives To Behave Ethically, Richard R. Fletcher

Electronic Theses and Dissertations

The problem explored through this research involved the lack of consensus on executive coaching knowledge, skills, and abilities for facilitating ethical behaviors on the part of business executives. This problem led the researcher to employ a mixed-method Delphi study to explore professional executive coach perceptions concerning the establishment of a governing body overseeing the activity of executive coach consulting and to assess the knowledge, skills, and abilities perceived as fundamental to executive coaching. The researcher focused the research approach through a systematic, iterative research design where a panel of six experts in the field of professional executive coaching located in …

Confidence Intervals For The Difference And Ratio Of Two Means From Independent Beta Distribution, Albert Ashong

Electronic Theses and Dissertations

This thesis explores constructing and evaluating confidence intervals for the difference and ratio of means from two independent Beta distributions using Maximum Likelihood Estimation (MLE) and the Wald method. It addresses the limitations of traditional methods due to the unique properties of Beta distributions. Extensive simulation studies assess interval performance based on coverage probability and Average width. The study aims to provide robust tools for statistical analysis in fields where Beta distributions are common, enhancing understanding and application of these methods in various scientific domains. Additionally, these confidence intervals will be applied to real biological data from a Morris Water …

Multi-Label Classification Of Acoustic And Electronic Drum Sounds Using Machine Learning, Sean Perman

Electronic Theses and Dissertations

This paper presents a system for multi-class classification of drum sounds using audio signal processing and machine learning techniques. The project utilizes a diverse dataset of both acoustic and electronic drum samples and extracts ten distinct audio features to capture the timbral and temporal characteristics of each sound. The methodology includes signal preprocessing, feature extraction, and the application of supervised classification algorithms to distinguish between multiple drum classes. Experimental evaluations demonstrate that the selected features significantly enhance classification accuracy across a varied dataset. These findings underscore the effectiveness of combining traditional audio processing with modern machine learning, offering promising applications …

Enhancing Multi-Step Stock Price Forecasting With Social Media Sentiment And Engagement Metrics, Damilare Olaniyan

Electronic Theses and Dissertations

This thesis investigates whether social media sentiment can improve the accuracy of stock price prediction beyond traditional historical data. While financial markets have long relied on structured numerical indicators, the growing influence of public discourse on platforms like Twitter has introduced new opportunities for extracting market-relevant signals from unstructured text. The study focuses on four major technology firms and combines sentiment features derived from Twitter with historical stock prices in a hybrid machine learning framework. Engagement-weighted sentiment, linguistic complexity, and polarity intensity were extracted using natural language processing techniques and incorporated into classification and regression models. Results show that including …

Collaborative Federated Learning For Robots In Heterogeneous Environments, Karlan Schneider

Electronic Theses and Dissertations

This research investigates the performance of Federated Averaging (FedAvg) in simulated Federated Learning (FL) scenarios with varying degrees of environmental heterogeneity among robotic agents. The study explores the impact of data heterogeneity on both the convergence of FedAvg and the fairness of learning, with regard to consistency of performance across agents. Experiments were conducted with simulated robots trained to perform a target collection task, where a subset of agents encountered an unfamiliar environment. The results demonstrate that while FedAvg exhibits resilience to the introduction of new environmental data, it struggles to ensure both convergence and fairness in heterogeneous settings. Specifically, …

Optimizing Option Market Clearing, Juan Andrés Malaver Alvarado

Electronic Theses and Dissertations

Modern options markets clear each strike in isolation, leaving cross-strike arbitrage unexploited. This thesis applies a payoff-dominant clearing mechanism to realized trades—roughly 2 000 Cboe VIX option executions from June–November 2016—after classifying each trade’s side and bundling by expiration. Three optimization formulations are tested: a fractional linear program (LP), a mixed-integer LP, and a pure integer program. On a 10-core laptop every bundle solves in < 0.5 s. The LP captures the greatest surplus, yet the integer models recover nearly as much while filling whole contracts and holding only modest margin. Results reveal persistent, albeit small, inefficiencies in executed trades and demonstrate that an integral cross-strike auction could operate in real time. The accompanying C/Gurobi code is modular and readily extendable to early-exercise options. Trade-level evidence thus supports redesigning exchange clearing to consider the complete option book.

Foldit Education Mode, Brett Schulz

Electronic Theses and Dissertations

Foldit education mode is a puzzle campaign within the protein folding video game Foldit. Education mode, initially designed as a classroom supplement for undergraduate biochemistry courses, has been expanded to provide a more comprehensive learning tool to players without a background in biochemistry. The edited and added levels teach players about protein biochemistry through playing puzzles designed to convey information and gameplay mechanics. The new Foldit education mode campaign features 49 levels grouped into 11 categories. The campaign has 6 new levels designed specifically for education mode and 4 levels adapted from the traditional Foldit campaign for use within education …

Computational Fluid Dynamics And Fluid Structure Interaction Modeling In Healthy Vertebral Arteries: A Comparative Study, Bryce Clinkenbeard

Electronic Theses and Dissertations

Cerebral perfusion is critical for maintaining proper brain function, with each cerebrovascular artery playing an integral role in the overall cerebrovascular system. When these arteries become damaged or develop plaque, cardiovascular disease (CVDs) such as atherosclerosis can arise, leading to conditions like arterial stenosis. While CVDs are most prevalent in older individuals, they are also observed in young adults, particularly those engaged in high-endurance occupations such as military service. Diagnosis and prediction of CVDs often rely on imaging modalities supported by computational fluid dynamics (CFD) which account for low resolution in fluid flow. CFD models assume rigid arterial walls, which …

Development Of An Embedded Iot Board For Real-Time Floor Estimation Of Autonomous Robots, Carter J. Sorensen

Electronic Theses and Dissertations

As service robots become more prevalent in multi-story environments such as hospitals, hotels, and laboratories, accurate floor-level detection is critical to ensuring operational reliability. Consider a robot tasked with delivering medical samples in a multi-story laboratory. Without accurate feedback, a robot exiting on the wrong floor could introduce delays, disrupt workflows, or compromise sample integrity. Internet of Things (IoT) technologies offer a way to address these risks by providing real-time error detection and corrective capability. However, current IoT-based floor estimation systems often require invasive modifications to building infrastructure—particularly elevator control panels. These approaches introduce challenges related to cost, liability, backward …

An Advanced Hexacopter For Autonomous Exploration Of Mars: Attitude Control And Navigation Strategies, Laura Sopegno

Electronic Theses and Dissertations

Mars exploration has recently witnessed major interest within the scientific community. Unmanned robotic platforms offer reliable solutions to acquire and collect data and information from the Red Planet. Particularly, rovers, landers, and orbiters have significantly shaped planetary exploration on the Moon and Mars, contributing significantly to past missions while also highlighting limitations in their capacity to cover diverse terrains over wide ranges. Given current advances in Unmanned Aircraft Systems (UASs), Unmanned Aerial Vehicles (UAVs) offer promising alternatives for future scientific missions.

It is argued that hexacopters, with their relatively compact design and redundancy, present a promising …

The Shōnen Apocalypse: An Analysis Of The Shōnen Power System And Its Narrative Functions, Mario Da Silva Melo

Electronic Theses and Dissertations

My thesis has two primary goals. First, it provides an overview of the history of manga as a medium, and manga studies as a field. In doing so, I observe a lack of terminological and methodological specificity. As a result, I provide a formalist approach to thematic criticism in order to address the above issues. Second, my thesis primarily centers on shōnen power systems and their narrative functions. Power systems are "magic rules" that determine how superhuman abilities mechanically function. I identify two main power systems in shōnen manga: spiritual manipulation and transformations. My thesis posits that shōnen manga authors …

The Embodiment And Experiences Of Gender Euphoria Among Transgender And Nonbinary Communities: A Mixed Methods Inquiry, Brendon T. Holloway

Electronic Theses and Dissertations

Gender euphoria is a critical aspect of embodiment for transgender and nonbinary (TNB) people that has long been overshadowed in academic research by deficit narratives and gender dysphoria. While gender dysphoria is the distress an individual may experience related to their gender, gender euphoria encapsulates the positive emotions a TNB person may experience because of positive gendered experiences. Despite community documentations of gender euphoria since the 1970s, academic research on gender euphoria has only recently begun to emerge. This three-paper dissertation advances this body of scholarship by exploring how gender euphoria is conceptualized, experienced, and embodied in TNB communities. Utilizing …

Peering Into The Past And Future: Connection, Challenge, Growth, And Rural Peer Mentors, Tinker Elizabeth Jacobs Duclo

Electronic Theses and Dissertations

Peer mentoring is a recognized strategy for supporting student success, academic persistence, and belonging in higher education. However, while mentee benefits are well-documented, the long-term effects on peer mentors (PMs) remain underexplored, particularly at Rural-Serving Institutions (RSIs). My evaluation bridges that gap by examining the lasting impact of PM service through a qualitative evaluation of the Rifle Colorado Mountain College (CMC) Peer Mentor Program. Guided by Rural Cultural Wealth (RCW) theory and using the Most Significant Change (MSC) model within a constructivist framework, my evaluation centers alumni PM voices, gathering their reflections on the significant changes and impacts of their …

Home Bound: Explaining The Neoliberalization Of Regional Public University Districts Through An Explanatory Sequential Mixed Methods Design, Becket C. Duncan

Electronic Theses and Dissertations

I examined housing costs in neoliberalized consumer spaces (Cunningham, 2016; Saunders & Ramírez, 2017) in regional public university (Orphan, et al., 2022) districts. I use geographic methods (Jonas, et al., 2015; Daché-Gerbino, 2018) with an explanatory sequential mixed methods design and a complex case study approach (Creswell & Plano Clark, 2018). Results from my spatial analyses showed that residents who live within one-half mile of universities spend more on monthly housing costs ($1,331) than those who do not ($1,227) except in the case of regional public universities ($1,184). Results from a regression analysis demonstrated that eight institutional variables predicted 33.2% …

A Toolkit For Improving School Climate: Lessons Learned From Action Research In A Network Of 16 Charter Schools, Grant E. Erwin

Electronic Theses and Dissertations

Educators today face daunting challenges, especially in addressing persistent gaps in outcomes for historically underserved students from low-income and minority backgrounds. Practitioners often cite school climate as a key barrier to student success—an assertion supported by research linking school climate to students’ academic and personal outcomes. This study sought to improve school climate across 16 urban middle and high schools within one charter network. Using a mixed methods Collaborative Action Research (CAR) design over multiple years, the study triangulated academic research, external resources, and on-the-ground lessons to provide practical guidance for other educators. Data were collected from multiple stakeholders and …

Elevating After-School: Addressing After-School Program Quality Through Improvement Design, Kate Marie Vincent

Electronic Theses and Dissertations

This study examines how Pathfinders After School, a national after-school provider can improve program quality amid rapid expansion. As enrollment has grown, program quality has declined, evidenced by decreasing net promoter scores (NPS), rising student behavior incidents, and terminated district partnerships. Grounded in Bronfenbrenner’s ecological systems theory (1979), this mixed-methods study uses improvement science methodology to test systemic interventions that empower key user groups and enhance program effectiveness. An improvement team, composed of crossfunctional organizational members, conducted root-cause analysis to identify primary drivers of after-school program quality. Core focus areas included staff training, student engagement, feedback mechanisms, and implementation fidelity. …

Organizational Cyber Resilience In Higher Education: How Administrative Leaders Experience A Disruptive Cyber Attack, Elizabeth R. Brentzel

Electronic Theses and Dissertations

Despite increasing cyber threats to higher education, little research examines how administrative leaders experience and navigate these crises to keep their institutions operational. This hermeneutic phenomenological study explores the lived experiences of seven administrative leaders in three higher education institutions following cyber attacks that disrupted normal operations. This study examined how leaders make sense of cyber crisis experiences and what factors shape their decision-making during response and recovery. Key findings reveal five critical areas of impact. First, cyber attacks can have deep emotional impacts on leaders and staff. Despite these effects, they maintain a strong dedication to enacting the educational …

The Financial Effects Of Enrolling Students With Disabilities In Catholic High Schools In States That Offer Vouchers Or Scholarships For Students With Disabilities, Susan M. Noonan

Electronic Theses and Dissertations

This study investigated the financial effect of enrolling students with disabilities in Catholic high schools located in states that offer vouchers or scholarships for these students. Furthermore, the research aimed to understand the school’s experience in collaborating with the U.S. Department of Education to meet the criteria for voucher acceptance. It is important to note that enrollment and tuition revenue is the key to a school’s financial stability. Using an exploratory case study approach, information was gathered from a variety of stakeholders including the superintendent, administration, business manager, admissions coordinator, teachers, and counselors. The findings indicated that parents of children …

Exploring New Mexico 4-H Volunteers’ Acceptance And Use Of Technology: A Qualitative Approach, Kayla Dawn Hinrichs

Electronic Theses and Dissertations

Integrating technology into youth development programs like 4-H is increasingly vital for enhancing communication, education, and engagement. However, technology adoption among 4-H volunteers remains inconsistent. This qualitative study explored the barriers to technology adoption among New Mexico 4-H volunteers. The researcher aimed to understand the factors influencing their willingness and ability to integrate digital tools into their volunteer roles. Guided by Rogers’s (2003) diffusion of innovation theory and framed by Creswell and Poth’s (2024) qualitative research design, this study employed semistructured interviews with a purposive sample of 4-H volunteers across the state. Following Braun and Clarke’s (2006) six- phase approach, …

Weight Recidivism Post-Bariatric Surgery: A Lifestyle Modifications Educational Intervention, Kimeshia N. Johnson

Electronic Theses and Dissertations

Weight recidivism after bariatric surgery is a frustrating phenomenon for bariatric surgery patients and healthcare professionals. A 90-day lifestyle modification intervention for patients at least 18 months postsurgery was performed in the primary care setting to determine if a structured program could promote or maintain weight loss. The intervention aimed to investigate if participation in a structured lifestyle modification program would impact the body mass index of bariatric patients at least 18 months postsurgical intervention. In coordination with a nutritionist specializing in addiction and obesity education, a booklet detailing the guidelines for a 12-week program was provided to 41 bariatric …

Leadership And Peer Support Of Surgeons Post-Adverse Event: A Phenomenological Study, Maxine E. Trent

Electronic Theses and Dissertations

Abstract Surgeons are leaving the active practice of surgery and fewer physicians are pursuing surgical training, as a result the United States is predicted to have a shortage of surgeons until 2050. Surgery hosts a multitude of occupational stressors, one of which is interoperative adverse events and the subsequent experience of second victims. The literature indicates surgeons prefer psychological/emotional support from peers after interoperative adverse events. However, best practices for how to deliver peer and leadership support responses when surgeons experience second victims have not been established. This was a phenomenological qualitative study targeting practicing surgeons across the United States. …

An Autoethnography Of My Experience Navigating The United States Educational System As An Immigrant: Intercultural Communication Challenges And Cultural Asynchronization, Anuti Ngangana

Electronic Theses and Dissertations

The purpose of this study was to share experiences as an immigrant student and answer the following question: What does my personal life history reveal about the importance of intercultural communication in the U.S. educational system? Immigrants leave their countries of origin and migrate to the United States for various reasons. Many are traumatized when they enter the country due to civil unrest in their native countries. Immigrants arrive with their children, who join a school system that is generally unprepared to meet their needs. In order to document immigrant experiences, the researcher utilized an autoethnographic approach using counter-storytelling from …

Feasibility Analysis For The Implementation Of An Anaerobic Digestion System In The City Of Pittsburgh, Pa, Gianna L. Kolencik

Electronic Theses and Dissertations

The current study is investigating the feasibility of an anaerobic digestion system

in Pittsburgh, Pennsylvania, at the old State Correctional Institute (SCI-Pittsburgh)

located at 1922 Westhall St. This location is immediately upstream of the Allegheny

County Sanitary Authority (ALCOSAN) along the Ohio River. Municipal solid waste

from ALCOSAN may be used as the main form of feedstock. ALCOSAN produced

roughly 36,500 tons of dry sludge in the reporting year 2023-2024. Based on the volume

of dry sludge from ALCOSAN it is estimated that an anaerobic digestion system could

yield approximately 29,930,000 kWh of energy, which is enough to power over …

Cholesterol Mass Fingerprinting To Probe Cholesterol-Protein Interactions, Warren Lowther

Electronic Theses and Dissertations

Cryomicroscopy, crystallography and NMR have been considered the “gold standard” of structural biophysics for some time. Recent successes in using these techniques has provided us with a plethora of insight into the architecture of different macromolecules like channels, transporters, and other molecular machines. However, information is often limited to a single allosteric state with the macromolecule in a non-native environment. Additionally, these traditional methods tend to be expensive and labor-intensive, requiring samples that are concentrated and highly purified. Chemical crosslinking coupled with mass spectrometry (CX-MS) has emerged as the ideal accessory for the aforementioned structural tools. In order to address …

Computational Models Of Vocal Fold Lesions: Analysis Of Fluid-Structure Interaction, Manoela Rocha Neves

Electronic Theses and Dissertations

The biomechanical and aerodynamic behaviors of the vocal folds (VFs) during phonation are heavily influenced by their structural composition and pathological changes. These conditions can induce localized stiffening that disrupts vibratory symmetry and alters airflow resistance. Previous research has lacked the integration of VF lesions in computational simulations using anatomically accurate models, limiting the understanding of their effects in phonation and potential contribution to voice disorders. Addressing this gap, this thesis develops a fluid-structure interaction (FSI) model of a realistic two-layered VF structure with lesions, comparing airflow patterns, structural deformations, and vibration profiles in both healthy and diseased cases.

The …

Impact Of Unconventional Gas Extraction On Tributaries Of Tenmile Creek, Greene County, Pennsylvania: A 12-Year Perspective, Christian L. Beall

Electronic Theses and Dissertations

Much of southwestern Pennsylvania has been central to a rapid increase in development for unconventional natural gas extraction in the past two decades. The continued monitoring of streams over their lifetime as extraction sites is pivotal to understanding the effects of fracking on local waterways and their ability to provide for wildlife and human use. Here, using multiple indices of biotic integrity (IBI), I perform analyses of fish and macroinvertebrate communities as well as water chemistry on two streams, Bates Fork (with shale wells) and Fonner Run (without), as part of a follow-up to work performed there from 2010-2012. Fish …

Alterations And Improvements Of The Photoacoustic Flow Cytometry Method, Nicholas J. Taylor

Electronic Theses and Dissertations

The emergence and proliferation of antibiotic-resistant bacteria present a significant and growing challenge to global public health, with the potential to render many existing antibiotics ineffective. Infections caused by these resistant pathogens are difficult to treat, resulting in higher morbidity, mortality, and healthcare costs. A major obstacle in combating these infections is the slow pace of traditional diagnostic methods, such as blood cultures, which typically take 2-3 days to identify the causative bacteria and determine their antibiotic resistance profiles. This delay in diagnosis hinders timely interventions and appropriate treatment, further contributing to the spread of resistant infections. As such, there …

God Who Crafts: An Appalachian Theology Of Making And Community, Gwendolen Jackson

Electronic Theses and Dissertations

Appalachia has been the subject of much speculation and often disparagement since it first became distinct as a part of the United States in approximately the 1860s, but it is more than just its reputation. This dissertation discusses the history and modern myth of Appalachia, and then it considers Appalachia on its own terms through what the people who live there have said about it and about their own lives.

This work focuses on the continued prominence of craft and its place in the spiritual lives of mountain people as it examines interviews that I conducted with mountain crafters. I …

English Language Teachers’ Use Of Technology In Libya: A Qualitative Study Using The Samr Model, Tasnem Alarbi

Electronic Theses and Dissertations

With the increasing dominance of technology in almost every aspect of our life and the evidence-based potential of technology to support learning, it becomes important to integrate technology in language instruction. Although there is a huge body of research on the effectiveness of technology in transforming learning in the field of language learning, there is little research reflecting on current teachers’ practices of instructional technology in language learning environments. Guided by the student-centered learning theory and the SAMR framework, this qualitative study explored the current practices of English as a Foreign language (EFL) teachers as related to technology integration in …

Can Exploring Before Instruction Improve Underrepresented Stem Students’ Learning Compared To Traditional Methods? Investigating Psychosocial Factors., Katherine G. Golway

Electronic Theses and Dissertations

Increasing evidence suggests that active learning benefits students’ learning outcomes, while also helping to reduce or eliminate grade differences between historically underrepresented (UR) and non-underrepresented (non-UR) students in STEM courses. This dissertation investigates if, and when, a specific active learning strategy – exploratory learning before instruction – can have these learning benefits and impact students’ fundamental needs (i.e., security, belonging, competence, and self-efficacy) and curiosity/interest. In five experimentally-controlled studies conducted within undergraduate STEM courses (physics, engineering, and chemistry), students were randomly assigned to exploratory learning conditions (explore-first) or traditional instruct-then-practice conditions (instruct-first). After completing both the learning activity and lecture-based …