Digital Commons Network^™

Examining The Lived Experiences Of Mothers' And Maternal Grandmothers' Co-Caregiving For An Elementary-Aged Child With Asd: A Phenomenological Study, Chelsea Pierce

Electronic Theses and Dissertations, 2020-2023

Children with Autism Spectrum Disorder (ASD) often require additional support, compared to their neurotypical peers. Caregivers of individuals with ASD frequently report mental health impacts including high stress, as well as the need for familial support. While literature exists around grandparents raising children with ASD, the researcher was unable to identify studies regarding the complex care relationship between mothers and maternal grandmothers as co-caregivers for an elementary-aged child with ASD. Therefore, the researcher conducted a phenomenological study to contribute to the literature on the experiences of mothers and maternal grandmothers as co-caregivers for an elementary-aged child with ASD. The researcher …

Terahertz Spintronics With Antiferromagnetic Insulators, Gyan Khatri

Electronic Theses and Dissertations, 2020-2023

The existence of the THz gap in the electromagnetic spectrum is not only preventing the advancement of several technologies but also hindering research and developmental activities due to a lack of research facilities operating in the gap region. There is a plethora of materials with dynamics lying in the THz gap region whose study could potentially lead to the development of new technologies for the generation, detection, and processing of THz signals. Antiferromagnets are gaining recent interest due to their high frequency dynamics lying in the THz region, and their potential uses as active elements in THz spintronics devices have …

"Taken In By The 'Man In A White Van' Story": The Digital Activism Efforts Of One Women's Civic Leadership Organization In Human Trafficking Awareness, Alex Rister

Electronic Theses and Dissertations, 2020-2023

Feminist activism in the digital age leverages technology to raise awareness of, and to mobilize support for, important issues and causes. Human trafficking is one such cause, and preventing it is included as a United Nations Sustainable Development Goal to achieve gender equality and empower women and girls. This study sought to understand the digital activism strategies of one women's civic leadership organization, the Junior League, for human trafficking awareness. In addition, this project analyzed how those digital activism strategies did or did not align with social justice approaches to human trafficking and how those digital activism strategies did or …

Data-Driven Diagnostics And Prognostics For Complex Systems: Methods And Applications, Junchuan Shi

Electronic Theses and Dissertations, 2020-2023

Recent advances in artificial intelligence or machine learning have the potential to significantly improve the effectiveness and efficiency of diagnostic and prognostic techniques. The objective of this research is to develop novel data-driven predictive models with machine learning and deep learning algorithms that allow one to model the degradation, detect the faults, as well as predict the remaining useful life (RUL) of complex systems, including bearings, gearboxes, and Lithium-ion (Li-ion) batteries. First, an enhanced ensemble learning algorithm is developed to improve the accuracy of RUL prediction by selecting diverse base learners and features at different degradation stages. The proposed method …

Automation, Take The Wheel: An Examination Of Factors Influencing Trust In Automated Driver Assist Technologies, James Ferraro

Electronic Theses and Dissertations, 2020-2023

Driving technology has progressed significantly since the introduction of anti-lock braking and cruise control decades ago. Current driver assist features can alert drivers of oncoming vehicles and even take control to keep the vehicle centered within its lane. The level of trust that people place in automation can impact how they monitor and accept these automated systems. Previous research has shown several performance outcomes associated with improper calibrations of trust in automation. However, there is still a need to examine trust in the context of advanced driving technologies. Research has yet to sufficiently investigate factors influencing trust in assistive driving …

The Cultural Significance Of Racial Socialization And "The Talk" Within The Black Family, Deborah Griffith

Electronic Theses and Dissertations, 2020-2023

In the wake of the renewed sense of powerlessness felt in the Black community, "The Talk" (Snell,2016) is primarily considered an essential rite of passage in Black families in preparing Black children how to engage with police when faced with microaggressions of racism. The awareness that the rules are different based on the color of your skin reinforces the narrative that for Blacks, most will face law enforcement that functions to protect and serve Whiteness (Burton, 2015). The purpose of this research was to examine the cultural significance of Racial Socialization and the use of "The Talk" within the Black …

2d Animation Of The 21st Century: The Digital Age, James Chambless

Electronic Theses and Dissertations, 2020-2023

My thesis project, entitled The Curse Breaker, is a personal and career venture studying the medium of 2D animation while battling my struggle with cigarette addiction. I researched and applied symbolism and narrative strategies while building an impactful hero narrative. Joseph Campbell's The Hero with a Thousand Faces provided insight into the monomyth and hero archetypes. Character and environment designs implemented symbolism as a driving focus of my thesis and fueled the semantic interpretation needed to successfully communicate my struggle with the audience in a non-verbal fashion. The language of cinematography aided in the effectiveness of my thesis film. The …

Try Again, Peyton Newell

Electronic Theses and Dissertations, 2020-2023

In my thesis collection, Try Again, I aimed to explore the consequences of choice. Through four short stories and one novella, I focused on close relationships between two focus characters and how both large and inconsequential choices can shape futures. In the novella, Try Again, I practiced game writing and learned how to shape a character when perhaps the largest signifier of character—choice—is left in the hands of the reader, rather than the author. The construction of this thesis and its stories developed my abilities to find high tension in lower stakes.

Obstetrical Nursing Care And Cesarean Section Delivery Rates In Laboring Women: An Integrative Review Of Literature, Ayana Cornelius

Honors Undergraduate Theses

Background: There is a documented overuse of C-sections (CS) in the United States. The majority of research surrounding CS overuse focuses on the physician’s role, location (state, city, hospital), hospital policies, and the reason why the CS is being performed. Little research focuses on the nurse’s influence on CS outcomes, although nurses spend the longest amount of time with the patient. Methods: Data for this literature review examined 13 research articles between 1992 to present, exploring factors relating to the overuse of CS, specifically, data relating to the correlation between CS and the nurse’s role. Results: Recent research has shown …

The Effectiveness Of Therapeutic Interventions For The Management Of Vulvodynia: An Integrated Literature Review, Arianna Cohen

Honors Undergraduate Theses

Problem: Vulvodynia, an unexplained vulvar pain, is a medical condition affecting women of all ages, races, and ethnicities and causes pain levels ranging from very mild discomfort to extreme suffering.

Purpose: The purpose of this study was to explore women’s knowledge toward seeking care for vulvodynia and to explore the different types of treatments prescribed after diagnosis. The secondary purpose of this review was to describe the treatments most effective in reducing pain caused by vulvodynia.

Methods: A review of the literature was conducted using articles from 2001 to 2021 that focused on diagnosis of vulvodynia and the relief of …

Investigating The Relationship Between The Microbiome And Neuroactive Metabolites In Huntington Disease Model Mice, Christian Millot

Electronic Theses and Dissertations, 2020-2023

Huntington Disease (HD) is an autosomal dominant neurodegenerative disorder caused by a trinucleotide repeat expansion mutation in the huntingtin (HTT) gene. HD is characterized by neurological symptoms, including motor, cognitive, and psychiatric decline. A non-neurological symptom, metabolic dysfunction, is also common in HD and can cause weight change, a feature recapitulated in HD mice. There is a need for a better understanding of the weight changes associated with HD, because patients with a higher body mass index show slower disease progression. Our lab has shown that metabolic dysfunction in HD mice is the result of a disrupted circadian feeding rhythm …

Investigation Of Realism In Facial Characteristics And Anthropomorphic Language In The Design Of Multimedia Instruction, Ecem Olcum

Electronic Theses and Dissertations, 2020-2023

Emotional design elements have recently been added to the research in cognitive load and multimedia learning (Um et al., 2012). One aspect of eliciting positive emotions is to use anthropomorphic design, which has been found to increase learning performance (Um et al., 2012; Plass et al., 2014; Park et al., 2015; Schneider et al., 2018). The current research aimed to investigate three design factors in three studies: anthropomorphism in verbal and visual design, single-frame or multi-frame illustrations, and realism of the anthropomorphic visual design. The first study confirmed that the anthropomorphic verbal and visual materials were perceived as anthropomorphic by …

The Ceramic Sequence For Vista Alegre, Quintana Roo, Mexico., Carrie Tucker

Electronic Theses and Dissertations, 2020-2023

This thesis creates a ceramic chronology for the site of Vista Alegre, a Middle Preclassic-Postclassic Maya port site on the northern coast of Quintana Roo, Mexico. As a member of the Proyecto Costa Escondida (PCE), I analyzed a sample of ceramic material (14,326 sherds) from three off-structure test units and their extensions (Pozos 8, 8A, 10, 12, 12A, and 12B). I completed "type: variety-mode" identification for 13,114 identifiable sherds with the help of the PCE and the Yucatán INAH ceramoteca facility, and I found a total of 101 established ceramic types and varieties, and twenty-five "specials" for which only the …

Predictors Of Ptsd, Depression, And Suicide-Related Outcomes For Military Personnel And First Responders In A Three-Week Intensive Outpatient Program For Ptsd, Victoria Steigerwald

Electronic Theses and Dissertations, 2020-2023

Military personnel and first responders are distinct populations that share similarities on work, cultural, and peritraumatic factors that may impact evidence-based PTSD treatment (EBT) outcomes. Little research to date has compared their response to EBTs or identified predictors of EBT outcomes for both populations. The present study examined whether first responders' treatment outcomes were non-inferior to those of military personnel in a three-week Trauma Management Therapy (TMT)-based intensive outpatient program (IOP) and whether baseline hyperarousal symptoms were predictive of outcomes. Data were analyzed from 111 military personnel and first responders (85.6% male, mean age=43.0 years) who completed the IOP. Changes …

Imaging Based Beam Steering For Optical Communication And Lidar Applications, Sajad Saghaye Polkoo

Electronic Theses and Dissertations, 2020-2023

Optical beam steering is a key component in any application that requires dynamic (i.e. realtime control) of beam propagation through free-space. Example applications include remote sensing, spectroscopy, laser machining, targeting, Lidar, optical wireless communications (OWC) and more. The pointing control requirements for many of these applications can be met by traditional mechanical steering techniques; however, these solutions tend to be bulky, slow, expensive, power hungry and prone to mechanical failures leading to short component lifetimes. Two emerging applications, Lidar imaging and OWC, truly need improved beam-steering capabilities to flourish and support the advancement of self-driving cars or relieve the congestion …

Mixed-Integer Programming Methods For Modeling And Optimization Of Cascading Processes In Complex Networked Systems, Cheng-Lung Chen

Electronic Theses and Dissertations, 2020-2023

Dynamics and growth of many natural and man-made systems can be represented by large-scale complex networks. Entity interactions and community interconnections within complex networks increase the level of difficulty for the investigation on structural network properties such as robustness, vulnerability and resilience. In this dissertation, we develop methodologies based on mixed-integer programming techniques to solve challenging optimization problems that model cascading processes in complex networked systems. In particular, we seek to provide decision making recommendations for problems related to different types of cascading processes in networks commonly considered in a variety of applications: interdependent infrastructure networks and social networks. In …

Assessing Patient Safety Culture In United States' Hospitals, Abdulmajeed Azyabi

Electronic Theses and Dissertations, 2020-2023

Patient safety is founded on continuous learning because there is an urgent need to report and learn from errors, accidents, near misses, and adverse events. The traditional approach to patient safety, based on forming mortality committees and investigating accidents, will no longer be effective. Frameworks, surveys, and assessment tools have been developed over the last decade to assist organizations in measuring and understanding their culture. This a retrospective cross-sectional study included 67,010 respondents from Agency for Health care Research and Quality (AHRQ) 2018 comparative database was analyzed using partial least squares structural equation modeling (PLS-SEM). This research explored whether the …

Air Force Pilot's Recognition About The Effectiveness Of Active Noise Cancellation On Hearing Health, Performance, And Aviation Safety, Kyungtaek Hwang

Electronic Theses and Dissertations, 2020-2023

The purpose of this thesis is to suggest the application of Active Noise Cancellation in Air Force pilot headset and helmet not only to reduce noise-induced hearing damage, but also to enhance pilot performance and aviation safety. Despite the recent advances of sound treatment technology, the interior sounds of a military aircraft exceed the damage risk criterion of 8 hrs/day exposure. Air Force pilots are flying under the extreme condition where noise is severe and prevalent. The exposure to noise can lead to permanent hearing loss, stress and fatigue, unintelligible communication, and deterioration of speech perception and recall. With all …

Mixed-Criticality System Design For Real-Time Scheduling And Routing Upon Platforms With Uncertainties, Sudharsan Vaidhun Bhaskar

Electronic Theses and Dissertations, 2020-2023

Unlike typical computing systems, applications in real-time systems require strict timing guarantees. In the pursuit of providing guarantees, the complex dynamic behaviors of these systems are simplified using models to keep the analysis tractable. In order to guarantee safety, such models often involve pessimistic assumptions. While the amount of pessimism was reasonable for simple computing platforms, for modern platforms the pessimism involves ignoring features that improve performance such as cache usage, instruction pipelines, and more. In this work, we explore routing and scheduling problems in real-time systems, where the uncertainties in the operation are carefully accounted for by complex models …

Not All Influence Is Born Equal: On The Effects Of Various Types Of Behavioral Influence Relationships On Social Media, Chathurani Senevirathna

Electronic Theses and Dissertations, 2020-2023

Typically, online social influence is analyzed using a single metric approach. However, social influence is not monolithic; different users exercise different influences in different ways, and influence is correlated with the user and content-specific attributes. One such attribute could be whether the action is an initiation of a new post, a contribution to a post, or a sharing of an existing post. Thus, this dissertation uses this platform-independent action classification and models the influence as multiple entities and examines social networks through the perspective of behavioral influence propagation. Two empirical studies are present in this dissertation. The first study presents …

Reconfigurable Load-Modulated Power Amplifier For Energy- And Spectrum-Efficient Wireless Communications, Haifeng Lyu

Electronic Theses and Dissertations, 2020-2023

With the increasing demand for faster date rates and extensive user connectivities, the complex modulation schemes and large-scaled arrays have been widely researched and employed in the modern wireless links e.g., 5G and beyond-5G systems. These pose major challenges to design the power amplifiers (PAs) to accommodate the system level evolution. As the critical part, the power amplifiers (PAs) dominate the output power, efficiency, linearity and reliability of the radio frequency (RF) transmitter. Consequently, the PA's capability of maintaining an efficient, linear and reliable signal amplification operation is essential to the communication systems. On the other hand, due to the …

4.74 Ghz Harmonically Operated Saw Device For Sensing Applications And Interrogation System, Michael Morales Otero

Electronic Theses and Dissertations, 2020-2023

Surface acoustic wave (SAW) devices have provided solutions to many sensor applications. With the increasing use of the electromagnetic spectrum, the adoption of higher frequencies for new developments is becoming a necessity. SAW devices represent a solution for advancing many emerging sensor's needs given their inherent advantages such as: wireless operation, low cost, and ease of fabrication. However, the SAW technology has been typically limited to frequencies under 3 GHz due to size limitations, increased SAW losses, and the need of an interrogation system suitable for reading SAW sensors at higher frequencies. This dissertation presents the work done to push …

Development Of A Dual-Mode Cmos Microelectrode Array For The Simultaneous Study Of Electrochemical And Electrophysiological Activities Of The Brain, Geoffrey Mulberry

Electronic Theses and Dissertations, 2020-2023

Medical diagnostic devices are in high demand due to increasing cases of neurodegenerative diseases in the aging population and pandemic outbreaks in our increasingly connected global community. Devices capable of detecting the presence of a disease in its early stages can have dramatic impacts on how it can be treated or eliminated. High cost and limited accessibility to diagnostic tools are the main barriers preventing potential patients from receiving a timely disease diagnosis. This dissertation presents several devices that are aimed at providing higher quality medical diagnostics at a low cost. Brain function is commonly studied with systems detecting the …

Power Inductors: Design, Modeling And Analysis, Subash Pokharel

Electronic Theses and Dissertations, 2020-2023

Power inductors, or reactors as they are called in the power industry, are one of the fundamental components of a power system. They serve various purposes in both conventional and emerging power systems including: power flow control, fault current limitation, reactive power compensation, harmonic filtering, and others. This dissertation explores the design and applications of conventional power inductors and ways to overcome their shortcomings and expand their functionalities. In addition, novel inductor designs are proposed and analyzed to address power system challenges. A series of inductors, including traditional constant reactance inductor, gapless ferromagnetic core reactor (GFCR) (both costant and variable …

Grid-Interactive Buildings: Modeling, Operations, And Security, Guanyu Tian

Electronic Theses and Dissertations, 2020-2023

Smart grids and smart buildings are two highly interdependent energy infrastructure systems. Buildings rely on the grid to provide reliable power while their flexibility can also be utilized to enhance the reliability and efficiency of power system operations. The quantification of heating, ventilation, and air condition (HVAC) system flexibility is critical to the operations of both the grid and buildings in demand response (DR) programs. However, the flexibility quantification is challenging due to the non-linearity and non-convexity of thermal dynamics associated with HVAC components. This dissertation proposes a novel HVAC flexibility quantification method based on a semidefinite programming (SDP) formulation. …

Multivariate Cognitive Walkthrough Of Qubitvr: An Educational Quantum Computing, Virtual Reality Application, Pauline Johnson

Electronic Theses and Dissertations, 2020-2023

Quantum computing is a promising field but understanding how it works can be challenging for a beginner. There are also not many educational resources to visualize and learn about quantum computing. To advance knowledge in this area, we have created QubitVR, which employs a Bloch sphere representation of a qubit, and supports trajectory visualizations and state equations in a virtual reality (VR) setting. We also conducted a multivariate cognitive walkthrough with subject matter experts (SMEs) on QubitVR to assess the effectiveness of trajectory visualizations and state equations in learning about quantum gates. The results were that trajectory visualizations aided users …

Quantum Graph Parameters, Parisa Darbari Kozekanan

Electronic Theses and Dissertations, 2020-2023

This dissertation considers some of the advantages, and limits, of applying quantum computing to solve two important graph problems. The first is estimating a graph's quantum chromatic number. The quantum chromatic number is the minimum number of colors necessary in a two-player game where the players cannot communicate but share an entangled state and must convince a referee with probability one that they have a proper vertex coloring. We establish several spectral lower bounds for the quantum chromatic number. These lower bounds extend the well-known Hoffman lower bound for the classical chromatic number. The second is the Pattern Matching on …

Load Forecasting And Synthetic Data Generation For Smart Home Energy Management System, Mina Razghandi

Electronic Theses and Dissertations, 2020-2023

A number of recent trends, such as the increased power consumption in developed and developing countries, the dangers associated with greenhouse gases, the potential shortages of fossil fuels, and the increasing availability of solar and wind energy act as motivating factors for the development of more intelligent and efficient systems both on the power provider as well as the consumer side. One of the most important prerequisites for making efficient energy management decisions is the ability to predict energy production and consumption patterns. While long-term forecasting of average consumption had been extensively used to direct investments in the energy grid, …

A Human-Centered Approach To Improving Adolescent Online Sexual Risk Detection Algorithms, Afsaneh Razi

Electronic Theses and Dissertations, 2020-2023

Computational risk detection has the potential to protect especially vulnerable populations from online victimization. Conducting a comprehensive literature review on computational approaches for online sexual risk detection led to the identification that the majority of this work has focused on identifying sexual predators after-the-fact. Also, many studies rely on public datasets and third-party annotators to establish ground truth and train their algorithms, which do not accurately represent young social media users and their perspectives to prevent victimization. To address these gaps, this dissertation integrated human-centered approaches to both creating representative datasets and developing sexual risk detection machine learning models to …

Examining Cooperative System Responses Against Grid Integrity Attacks, Alexander D. Parady

Honors Undergraduate Theses

Smart grid technologies are integral to society’s transition to sustainable energy sources, but they do not come without a cost. As the energy sector shifts away from a century’s reliance on fossil fuels and centralized generation, technology that actively monitors and controls every aspect of the power infrastructure has been widely adopted, resulting in a plethora of new vulnerabilities that have already wreaked havoc on critical infrastructure. Integrity attacks that feedback false data through industrial control systems, which result in possible catastrophic overcorrections and ensuing failures, have plagued grid infrastructure over the past several years. This threat is now at …