Digital Commons Network^™

Robocat: An Autonomous Surface Vehicle (Asv) For Near-Surface Hydrodynamic Measurements In Buoyant Plumes. Development And Case Study, Christopher Tom Papageorgiou

Theses and Dissertations

The study of near surface processes in plumes and other stratified environments requires the collection of hydrodynamic and hydrographic data near the sea surface at high temporal and spatial (in the vertical) resolution. This need led to the design and development of a low-cost autonomous surface vehicle (ASV) equipped with a 5-beam acoustic Doppler current profiler (Nortek 1000 Signature) capable of measuring the vertical structure of both mean flow and turbulence dissipation rate (ε) as close as 30 cm below the sea surface. The ASV is a small catamaran-like platform propelled by four thrusters arranged in an Omni-X configuration, to …

A Globalized Optimization Schema For Automated Fiber Placement Processing Parameters, Matthew John Godbold

Theses and Dissertations

Automated Fiber Placement is an advanced manufacturing technique for industrial-scale composite structures. Advanced robotics coupled with composite manufacturing results in faster and more consistent results than previously obtained through hand layup. The complexity and interconnectedness of the automated fiber placement process provides a difficult challenge for traditional modeling techniques. Modeling within automated fiber placement currently utilizes physics-based modeling to inform the translation of a design to a manufacturing plan. The intricacy of the automated fiber placement process dictates that attempts at modeling or optimizing these processes are often limited in their scope. Physics-based modeling for manufacturing typically involves numerous interacting …

A Comparative Measure Of Judicial Legitimacy, Rahul Hemrajani

Theses and Dissertations

In the Federalist papers, Hamilton emphasized the vulnerability of courts as the weakest branch of government, lacking both the power of the "purse" and the "sword." Consequently, courts can secure compliance with their decisions only if people believe in the legitimacy of their actions. Courts that are seen as legitimate by the public can better prevent governmental overreach, enhance the rule of law, and protect democratic rights. However, there is no consensus on how to validly measure the legitimacy of courts. Additionally, existing research on legitimacy focuses on courts in the United States; we know little about judicial legitimacy in …

Computerized Psychological Testing: Designing And Developing An Efficient Test Suite Using Hci And Reinforcement Learning Techniques, William Henry Hoskins

Theses and Dissertations

In this work we discuss the design and development of the Carolina Automated Reading Evaluation (CARE), created to facilitate the finding of deficits in the reading ability of children from four to nine years of age. Designed to automate the process of screening for reading deficits, the CARE is an interactive computer-based tool that helps eliminate the need for one-on-one evaluations of pupils to detect dyslexia and other reading deficits and facilitates the creation of new reading tests within the platform. While other tests collect specific data points in order to determine whether a pupil has dyslexia, they typically focus …

Effects Of Chronic Stress On Working Memory Are Sex-Specific And Age-Dependent, Tyler Jamison Cox

Theses and Dissertations

As the aging demographic of the United States expands, the convergence of age-related cognitive decline and stress-related dysregulation emerges as a substantial concern, impacting not only the lifespan but also the overall well-being of American citizens. In the realm of research, there has been a pronounced focus on Alzheimer's Disease, leading to an imbalanced allocation of resources compared to the study of normal aging. It is widely acknowledged that executive function deteriorates as individuals age, a concept substantiated by numerous investigations conducted in labs dedicated to the study of normal aging. Significantly, even among individuals afflicted with neurodegenerative disorders affecting …

Supporting Our Heroes: The Need For A Community Of A Community Of Practice Dedicated To The Support Of Military-Connected Families Living In The Southeastern United States, Ashley Gwyneth Monier

Theses and Dissertations

Military families face unique challenges that many civilian families may not be familiar with, to include frequent geographical relocations and extended periods of separation due to military deployments. This study aims to identify the resources available to military families and identify gaps in services and programming to highlight the need for a Community of Practice dedicated to addressing issues that impact our all-volunteer force in the southeastern United States. Furthermore, this study aims to give a voice to the military community regarding the unique difficulties that are commonplace within the military life, to include regular mandated geographical relocations and extended …

Studies Of Damage Tolerance In Automated Fiber Placement Based Heterogeneous Meso-Architectured Carbon/ Epoxy Composite Laminates., Karan Kodagali

Theses and Dissertations

Traditional unidirectional (UD) carbon fiber-reinforced polymer matrix composites manufactured via automated fiber placement (AFP) are widely used in aerospace structures. While heterogeneous at the micro-scale, these materials are homogeneous at the meso-scale (ply-scale). The major limitation is its limited toughness, poor damage tolerance/impact resistance capability and the inability to sufficiently redistribute stresses, resulting in strength-toughness tradeoffs, making them susceptible to impact damage. From previous studies, there is an understanding that fiber architecture has a first order effect on the damage tolerance. Introducing new discontinuous/heterogeneous meso-scale architectures, through an optimal merger of material and structure, can result in unprecedented property improvements …

Uncertainty Quantification And Constraint Of Chemical Kinetic Mechanisms Based On Flow Reactor Experiments, Ana Victoria Kock

Theses and Dissertations

The chemical kinetic model is one of key sub-models for computational fluid dynamics (CFD) simulation for optimizing and designing various combustors/engines. Detailed chemical kinetic models can consist of hundreds of species and thousands of elementary reaction steps. Considering the complexity in these detailed chemical kinetic models, it is important to quantify and minimize the uncertainties in the kinetic parameters. The uncertainties in the kinetic models can then be compared to uncertainties tied to experimental measurements. This approach has been frequently applied for relatively simple combustion parameters (e.g., laminar flame speed, ignition delay time), however it has not been well utilized …

Examining The Perceptions And Knowledge Of School Administrators In Special Education, Maranda Hayward

Theses and Dissertations

School administrators play a critical role in special education and it is essentially their responsibility to ensure policies, procedures, and practices are carried out in accordance with the law. This requires that school administrators know the requirements of the law and research-based practices in special education. Researchers have shown that school administrators perceive themselves as having adequate knowledge and understanding of special education law; however, there is a lack of research on the practical knowledge of school administrators in special education. This study, using hypothetical scenarios, examined whether school administrators were able to determine if a decision or action made …

Supporting Self-Efficacy Through Mindset: The Impact Of A Growth Mindset Innovation On The Self-Efficacy Of Middle School Students In A Teen Leadership Course, Shannon J. Kojah

Theses and Dissertations

Understanding how the disposition of a student interacts with or influences a behavior plays a central role in cognitive theories. Middle school years have been accounted for as being difficult, awkward, and sometimes downright stressful. The overall purpose of this action research was to examine the impact of a growth mindset innovation using a digital portfolio on the self-efficacy of middle school students in a leadership course. The research questions were: (1) How can a growth mindset intervention using a digital portfolio support self-efficacy improvement in middle school students taking a leadership course? (2) What are students’ perceptions on their …

Quantification Of The Internalization Of A Commercially Available Silver Nanoparticle To The Bacterium Escherichia Coli, Samantha Mcneal Case

Theses and Dissertations

Nanoparticles (NPs), materials with dimensions ranging from 1 to 100 nanometers, are widely used in various consumer products, with silver nanoparticles (AgNPs) being the most prominent. Exposure to AgNPs occurs through multiple sources, including food packaging, supplements, and disinfectants, owing to their antimicrobial properties. Prior research has identified adverse health effects, such as cytotoxicity, toxicity, and Ag bioaccumulation resulting from AgNP exposure to bacteria in biological systems and the environment. However, most studies employ pristine, highly concentrated NPs, which may not accurately represent realistic exposure scenarios at environmentally relevant concentrations. This project investigates the fate and internalization of AgNPs, found …

Uav-Deployable Sensing Network For Rapid Structural Health Monitoring, Joud Satme

Theses and Dissertations

Natural disasters and extreme weather events pose significant threats to the structural integrity and safety of civil and environmental infrastructure. In this context, Structural Health Monitoring (SHM) emerges as a pivotal discipline, intersecting engineering, technology, and disaster resilience. SHM's mission is to provide real-time, data-driven insights into the condition of critical infrastructure, encompassing bridges, buildings, dams, and transportation networks. These systems not only expedite assessment, but also wield substantial influence in mitigating catastrophic disasters. As the frequency and intensity of extreme weather conditions escalate due to climate change, the need for robust and proactive SHM strategies becomes increasingly apparent. Moreover, …

The Genetic Associations Of Circadian Rhythm And Sleep Disorder Traits With Risk Of Monoclonal Gammopathy Of Undetermined Significance And Multiple Myeloma, Brittany Crawford

Theses and Dissertations

Background: Circadian rhythm disruption and sleep have been widely studied for their roles in immunity and cancer development. Evidence for an association of circadian rhythm and sleep traits with multiple myeloma (MM) risk is inconclusive. No studies have investigated these traits in relation to monoclonal gammopathy of undetermined significance (MGUS). Given that MGUS precedes almost all MM cases, investigating sleep and circadian rhythm in relation to both MM and MGUS is necessary. The purpose of this dissertation was to explore the genetic influences of circadian rhythm and sleep traits on the risk of MGUS and MM. Methods: Data were leveraged …

The Impact Of Withdrawing From War: Veteran Attitudes Toward The Afghanistan Withdrawal And Implications On Healthcare Utilization, Mental Health Distress, And Motivation To Serve Again, Delaney J. Bennett Granko M.S.

Theses and Dissertations

This study examined veteran service members from all eras, ranks, branches, and time of service to evaluate the mental and physical health impact of the Afghanistan Withdrawal on their functioning and utilization of healthcare services. To our knowledge, this is the first scientific study examining the Afghanistan Withdrawal's impact on veterans. The researchers aimed to better understand service member attitudes about the withdrawal and their motivation to serve again based on their experience. Qualitative responses were requested to further understand veteran opinions on the withdrawal.

The study sample consisted of 112 veterans from one or more of the United States …

A Work Towards A Single-Bridge Hydrazine Sensor, Brenden Jay Schmeltz

Theses and Dissertations

Hydrazine can currently be detected by irreversible methods, Carbazolopyridinophane (2,18-Dithia[3][1,8]carbazolo[3][2,6]pyridinophane) CP was synthesized by Brown et al. to detect hydrazine in real-time while also being reversible. The threshold for detection was 100 ppb, regulatory use requires 10 ppb as this is when permanent damage to humans can be caused. A more sensitive sensor will allow for safer workplaces for many people. A single, 3-atom bridge sensor will further examine the photophysical capabilities of carbazole-pyridine as an emitter/quencher pair. 1-Carbazole-1-methylpyridyl-2methyl sulfide SBCP will allow freedom of rotation as well as the bending of the bridge. These benefits will introduce conformers which …

What's Your Type? The Relationship Between Enneagram Personality Style And Psychiatric Diagnosis, Danielle Augusta Huber

Theses and Dissertations

Despite its long history and ever-growing popularity amongst mental health providers and laypeople, the Enneagram model of personality has seen limited empirical support regarding its clinical relevance and efficacy. The present study sought to contribute to the literature supporting the Enneagram’s use in psychotherapy. As a majority of therapeutic services aim for the reduction and/or resolution of psychopathology, often in terms of one or more diagnoses, and as previous research has theorized how the Enneagram model and psychiatric diagnoses might be related (Palmer, 1988), it was the researchers’ intention to analyze whether these theoretical associations could be statistically supported. This …

Public-Private Partnerships (Ppp) In Technical Education: The Case Of Egypt’S Applied Technology Schools (Ats), Youstina Magdy

Theses and Dissertations

Technical education is a form of education that gained momentum in the 1800s and was considered as a parallel distinct model to general education by the post-war period. Public-private partnerships (PPPs) were one of the scaling up and enhancement efforts of technical education. In Egypt, the technical secondary education system has various school models; however, it was until 2018, when we first see the implementation of an PPP model with the establishment of the Applied Technology Schools (ATS). ATS schools aim at supplying the labor market with experienced skillful competent graduates in the demanded sectors in the Egyptian labor market, …

Shades Of Housing: Real Estate Urbanism And State Planning In Egypt, Zeinab Nadeem

Theses and Dissertations

The housing crisis is a global dilemma, especially in the context of urban cities in developing countries. Housing affordability has become more challenging in the recent global and national turbulent economic conditions of rising inflation rates and construction costs, where Egypt is witnessing a surplus of vacant housing units that are either unsold or unoccupied with citizens involuntarily relocating to remote new cities. The government has also significantly engaged in real estate market speculation by offering public land for profits to private investors in the market since the 1990s. The shades of housing found in Egypt are the works of …

Recycling Of Electrode Materials From Spent Lithium-Ion Batteries To Develop Supercapacitor Devices, Yasmine Mesbah

Theses and Dissertations

Recently, there has been a rapid expansion in the utilization of lithium-ion batteries (LIBs) due to the propagation of portable electronic devices, electric vehicles, and renewable energy storage systems. Despite the plentiful advantages provided by LIBs, concerns have emerged regarding resource depletion and the environmental impact associated with their widespread use. The lack of essential resources such as lithium, cobalt, and nickel, along with the difficulties associated with managing battery waste, necessitates the development of sustainable strategies that encompass the entire lifecycle of LIBs. Recycling has arisen as a promising solution to combat these challenges and promote a more circular …

Vulnerable Road User Safety: Data Collection, Analysis, And Countermeasures, Anahita Kakhani

Theses and Dissertations

The safety of pedestrians and bicyclists (vulnerable road users) has become a paramount global concern, especially with a 53% and 31% surge in related crashes over the past decade in the U.S. Despite transportation agencies implementing various safety measures to address this issue, the number of severe injuries among these road users continues to climb annually. This underscores the urgent need for innovative methodologies and technologies to pinpoint the factors compromising their safety. To do so, this study aimed to introduce and employ techniques and countermeasures to gain deeper insight into risks faced by vulnerable road users. This study includes …

Development And Validation Of The Contemporary Sexual Violence Scale, Corey Frederick Doremus

Theses and Dissertations

College students face an increased risk of sexual violence victimization and perpetration compared to the general population. Although sexual violence experiences within this population have received substantial attention by researchers, studies typically focus on male perpetrators and female victims. Although a number of measures have been developed to assess male sexual violence perpetration, comparatively few have been developed to measure other types of SV such as female perpetration. The current project aimed to develop an empirically supported measure of sexual violence perpetration which assesses the frequency and severity of engagement in discrete sexual violence behaviors and tactics among individuals of …

Advanced Processing Techniques For Electrospun Nanofibers: Investigating Annealing And Laser Zone-Drawing Effects On Material Characteristics, Matthew D. Flamini

Theses and Dissertations

Electrospun nanofibers hold potential for a wide range of commercial and scientific applications; however, their properties must be optimized through post-processing treatments to achieve optimal performance. This dissertation investigates the effects of annealing and laser zone-drawing on electrospun nanofiber properties. Annealing polycaprolactone nanofibers at 70°C results in the highest rate of crystallization and molecular alignment, impacting long-term stability and mechanical properties. A multivariate linear model incorporating crystallinity and molecular alignment predicts the material properties resulting from annealing under different conditions. Laser zone-drawing experiments reveal that polylactide fiber thinning under laser irradiation primarily occurs due to drawing rather than ablation. Steady-state …

Developing A Smart And Sustainable Public Transportation System: A Case Study In Camden, New Jersey, Zahra Vafakhah

Theses and Dissertations

The transportation sector is a major contributor to air pollution and Greenhouse Gas (GHG) emissions. As a significant source of emissions, public transportation presents an opportunity for mitigation through electrification. However, transitioning to an electric bus fleet necessitates substantial investments in bus procurement and charging infrastructure. To address the associated costs, this study introduces a mixed-integer linear mathematical model developed to optimize the location of on-route fast charging stations within bus networks. The central objective of this optimization formulation is to minimize the overall cost of establishing the charging infrastructure. The study employs a real-world case study focusing on a …

Fundamental Study Of Ionic Liquid Physicochemical Effects On Thermal Stability Of Model Biological Macromolecules, Austin Keith Clark

Theses and Dissertations

Ionic Liquids (ILs) are substances with a unique physical attribute compared to that of solid ionic salts. At room temperature, ILs are molten salts that have a variety of physical effects that can play a role in their impact on other molecules, as solvents or solutes. They can play the role of the solvent in a variety of applications, from biofuels to organic catalysis or as excipients in pharmaceutical formulations. These ILs have a desirable use as solvents due to their ability to be tunable substances. Changing the cation or anion of the IL causes a change in its physical …

The Effect Of Music Therapy Interventions For Early Adolescents With Special Needs To Improve On-Task Behaviors, Shuolin Kong

Theses and Dissertations

This study investigated the effects of music therapy intervention on on-task behaviors of early adolescents with autism spectrum disorder and/or intellectual disabilities. A within-subject research design was used with four early adolescents diagnosed with autism spectrum disorder and/or intellectual disabilities from a Junior high school in the United States. Four school-age students from one classroom (N=4, male= 2, female= 2, mean ages =11.75 years) were selected and assigned to attend two alternated treatment conditions: four group non-music therapy sessions (Treatment A) and four group music therapy sessions (Treatment B). A security video camera recorded the duration of on-task behaviors under …

Drenched And Drying: Regional Affects And Small-Scale Souths: A Creative Dissertation, Emily Fontenot

Theses and Dissertations

Drenched and Drying is a speculative climate fiction novel that explores regional affects and tensions by zooming in on the US Gulf Coast South and central California in the midst of climatological disaster. They look to each other for aid. The asymmetrical experiences of climate change fuel the ongoing tension in the novel. The dissertation includes a critical introduction to the novel that examines the understanding of the US South as a region that has been created by media and literary canons, as well as affectual understandings of the region. I argue that to combat this monolithic and flattening imagined …

Evaluation Of Digital Twin Approaches For Thermal Modeling And Energy Optimization For Existing Buildings, Jason Bastie Muermann

Theses and Dissertations

Residential, commercial, and industrial building sectors in the United States were responsible for 42% of the nation’s consumption of 100.2 quadrillion BTUs of energy in 2019 [1]. 80% of the nation’s energy is sourced from fossil fuels, including coal, natural gas, and petroleum. Fossil fuels are known contributors to carbon emissions and climate change, making energy reduction vital. Consequently, New Jersey Department of Military and Veterans Affairs (NJDMAVA) is tasked with evaluating energy consumption and efficiency in all New Jersey Army National Guard (NJARNG) facilities, as mandated by TAG Policy Letter 18-5, Executive Order 13990, and the Energy Independence and …

Illuminating The Ozarks: A View Of Ozark Mountain Culture Through The Lens Of Regional Craft, Jessica Erwin

Theses and Dissertations

The Ozarks Mountain region has a rich and lengthy cultural heritage. This heritage includes the creation of crafts with attributes unique to the Ozarks. In 1978 the Ozarks Regional Commission, a federal-state partnership, conducted a survey of crafts and craftsmen in the Ozarks. This thesis examines using digitized images of 35mm slides from the report Crafts: The Human Dimension to build a web exhibit about the history and culture of the Ozarks Mountain Region. The topics covered include geography, migration patterns, and craft items of the region.

Mechanistic Investigations Of A Novel Braf Regulatory Switch And Braftide, An Allosteric Peptide Inhibitor Of Braf, Alison Yu

Theses and Dissertations

RAF kinases (ARAF/BRAF/CRAF or Raf-1) are serine/threonine kinases in the MAPK (RAS-RAF-MEK-ERK) pathway. The MAPK pathway is crucial in development and normal cell function. These same roles are dysregulated in cancer; BRAF is the most frequently mutated isoform in cancers and in particular, activation loop mutants BRAF V600E/K mutants have the highest mutational incidence. Three FDA approved inhibitors potently inhibit BRAF V600E/K mutants. However, these same inhibitors fail to address the non-V600E/K mutations and result in paradoxical activation of the MAPK pathway. Two strategies were employed to address the limitations of the FDA-approved inhibitors: provide novel regulatory details of RAF …

Print Versus Electronic: A Mixed-Method Exploration Of Student Preferences At Marathon University, Jennifer King Matthews

Theses and Dissertations

Academic libraries have been adapting and changing their collections with technology. Often, this technology has accompanied a conversion from physical collections, such as print books to electronic collections and electronic books. This mixed methods case study aimed to understand how first-generation college students at a public research university use print books versus electronic books. Data was collected using a survey based on the Academic Reading Questionnaire (Mizrachi, 2015) to assess the attitudes of both first-generation college students and continuing-generation college students towards these materials in the Marathon University Library collection. A qualitative semi-structured interview was also conducted, which focused on …