Assessment Of User Environmental Perceptions Associated With Gray's Reef National Marine Sanctuary, Marieke Johanna Lemmen

Graduate Theses, Dissertations, and Problem Reports (ETD)

Resource management in marine protected areas is confronted with the challenging conflict of use and conservation of resources. Increased visitation in marine environments has led to the need of management due to negative ecological and social impacts. Understanding environmental values, attitudes, and perceptions is important to the success of environmental protection. Using online surveys sent via Qualtrics asking questions regarding the users’ knowledge, attitudes, and perceptions of ocean resources, goods and services, this research is focusing on identifying user profiles and understanding their environmental perception associated with Gray’s Reef National Marine Sanctuary, an offshore marine protected area, and surrounding coastal …

Precise Landing Of Vtol Uavs Using A Tether, Jeremy W. Rathjen

Graduate Theses, Dissertations, and Problem Reports (ETD)

Unmanned Aerial Vehicles (UAVs), also known as drones, are often considered the solution to complex robotics problems. The significant freedom to explore an environment is a major reason why UAVs are a popular choice for automated solutions. UAVs, however, have a very limited flight time due to the low capacity and weight ratio of current batteries. One way to extend the vehicles' flight time is to use a tether to provide power from external batteries, generators on the ground, or another vehicle. Attaching a tether to a vehicle may constrain its navigation but it may also create some opportunities for …

Bottleneck Management Through Strategic Sequencing In Smart Manufacturing Systems, Sayantee Roy

Graduate Theses, Dissertations, and Problem Reports (ETD)

Nowadays, industries put a significant emphasis on finding the optimum order for carrying out jobs in sequence. This is a crucial element in determining net productivity. Depending on the demand criterion, all production systems, including flexible manufacturing systems, follow a predefined sequence of job-based machine operations. The complexity of the problem increases with increasing machines and jobs to sequence, demanding the use of an appropriate sequencing technique. The major contribution of this work is to modify an existing algorithm with a very unusual machine setup and find the optimal sequence which will really minimize the makespan. This custom machine setup …

System Development Of An Unmanned Ground Vehicle And Implementation Of An Autonomous Navigation Module In A Mine Environment, Jonas Amoama Bredu Jnr

Graduate Theses, Dissertations, and Problem Reports (ETD)

There are numerous benefits to the insights gained from the exploration and exploitation of underground mines. There are also great risks and challenges involved, such as accidents that have claimed many lives. To avoid these accidents, inspections of the large mines were carried out by the miners, which is not always economically feasible and puts the safety of the inspectors at risk. Despite the progress in the development of robotic systems, autonomous navigation, localization and mapping algorithms, these environments remain particularly demanding for these systems. The successful implementation of the autonomous unmanned system will allow mine workers to autonomously determine …

Noise Exposure Trends Among Violating Coal Mines, 2000 To 2021, Hanna Grace Davis

Graduate Theses, Dissertations, and Problem Reports (ETD)

Noise-induced hearing loss has continued to be a significant issue within the mining industry, even after the passing of the MSHA’s improved noise standard in 2000. NIOSH has recognized that the noise standard enacted by both MSHA and OSHA does not properly protect workers with the 5 dBA exchange rate (i.e., the increase in noise level leading to a doubling of energy) and the lack of emphasizing the use of engineering controls over administrative controls and overreliance on hearing protection device usage. The primary objective of this study is to investigate statistical sound relationships between MSHA noise-related violations and samples …

Artificial Intelligence Based Approach For Rapid Material Discovery: From Chemical Synthesis To Quantum Materials, Robert Tempke

Graduate Theses, Dissertations, and Problem Reports (ETD)

With the advent of machine learning (ML) in the field of Materials Science, it has become obvious that trained models are limited by the amount and quality of the data used for training. Where researchers do not have access to the breadth and depth of labeled data that fields like image processing and natural language processing enjoy. In the specific application of materials discovery, there is the issue of continuity in atomistic datasets. Often if one relies on experimental data mined from literature and patents this data is only available for the most favorable of atomistic data. This ultimately leads …

Aerodynamic Analysis Of Damage State Missiles Using Overset Meshing Techniques For Application To Computational Fluid Dynamics Simulation, Jonathan A. D'Alessio

Graduate Theses, Dissertations, and Problem Reports (ETD)

Significant research over the years has aimed to redefine the flight capabilities of aircraft after sustaining structural damage to critical components. Flight survivability and controllability are key areas of concern when designing fault-tolerant flight control systems to handle a wide range of potential scenarios. However, there is a lack of research on the impact of physically damaged missile systems. Missile counter-defense and intercept capabilities have become more advanced as the United States has focused heavily on these areas over the years. Damaged missiles due to a kinetic intercept capability present an opportunity for analysis of the post-damage implications on flight …

A Case Study Of Poland Regarding The Utility Of Strategic Culture, Christian Pierce Griffith

Graduate Theses, Dissertations, and Problem Reports (ETD)

From the Cold War until today, researchers and strategists have worked to find better ways of understanding the strategic decisions of other countries. Many diplomats and international decision makers subscribed to the idea that countries always acted rationally with a rational, cost-benefit analysis approach to problems that laid before them. Others, however, wished to explain the seemingly irrational actions countries have taken, and proposed that not all countries share the same objective values and goals. Academic authors and political strategists claimed that countries have Strategic Cultures, defined as frameworks that policy makers operate within where they are influenced by cultural …

Modeling Of Inverter-Based Microgrid For Small-Signal And Large-Signal Stability Analysis, Vishal Verma

Graduate Theses, Dissertations, and Problem Reports (ETD)

Integration of inverter-based resources (IBRs) such as solar photovoltaic, wind, and battery storage, is both a boon and a bane for electric power systems. On one hand, IBRs have helped in making electrical energy a clean (carbon-free) source of energy. On other hand, the dynamics of IBRs have changed the way power system studies have been carried out. With the advantages IBRs offer over conventional resources, it is assumed that a small distribution power system (microgrid) will have a 100% IBRs penetration in the future. Such a microgrid can operate in grid-connected mode or in an islanded mode. Both modes …

Improving Robotic Decision-Making In Unmodeled Situations, Nicholas Scott Ohi

Graduate Theses, Dissertations, and Problem Reports (ETD)

Existing methods of autonomous robotic decision-making are often fragile when faced with inaccurate or incompletely modeled distributions of uncertainty, also known as ambiguity. While decision-making under ambiguity is a field of study that has been gaining interest, many existing methods tend to be computationally challenging, require many assumptions about the nature of the problem, and often require much prior knowledge. Therefore, they do not scale well to complex real-world problems where fulfilling all of these requirements is often impractical if not impossible. The research described in this dissertation investigates novel approaches to robotic decision-making strategies which are resilient to …

Multimodal Adversarial Learning, Uche Osahor

Graduate Theses, Dissertations, and Problem Reports (ETD)

Deep Convolutional Neural Networks (DCNN) have proven to be an exceptional tool for object recognition, generative modelling, and multi-modal learning in various computer vision applications. However, recent findings have shown that such state-of-the-art models can be easily deceived by inserting slight imperceptible perturbations to key pixels in the input. A good target detection systems can accurately identify targets by localizing their coordinates on the input image of interest. This is ideally achieved by labeling each pixel in an image as a background or a potential target pixel. However, prior research still confirms that such state of the art targets models …

An Action Research Evaluation Of An Online Inclusive Sport Peer Coach Training, Margaret Roberts Condon

Graduate Theses, Dissertations, and Problem Reports (ETD)

Background: Trained peer tutors are a proven pedagogical technique that can help eliminate barriers to inclusion in physical education and extracurricular sport, including a reported lack of training and experience of professionals. When adequately trained, peer tutors can encourage social interactions, provide constant feedback, and increase active learning and engagement. While recommendations for training peer tutors have been provided, there are currently no known studies examining a peer tutor training in an online format for middle and high school-aged students participating in an inclusive sport program.

Purpose: The purpose of this study was to evaluate the effectiveness of an …

Elucidating The Proteasomal Regulatory Mechanism Of Proteasome Activator Pa28Γ /Regγ, Taylor Ann Thomas

Graduate Theses, Dissertations, and Problem Reports (ETD)

Virtually all cellular processes are precisely regulated by the proteasome which is the primary enzyme responsible for the degradation of misfolded, damaged, or no longer necessary soluble proteins. To prevent any untimely degradation of these target protein substrates and protect the cell, the proteasome is tightly regulated via adaptor proteins, known as proteasomal regulators. There are many classes of proteasomal regulators each with their own unique structures, functions, and effects on protein degradation through the proteasome. One such class is the 11S family of proteasomal regulators which are also referred to as PA26/28, or REG. The 11S family are ATP-independent …

The Business Of Behavior: Appalachian Teachers’ Experiences In Using Positive Behavior Interventions And Support, Erin Michele Coffield

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation explores the lived experiences of Appalachian elementary and middle school teachers who have been identified as working in Positive Behavior Intervention and Support (PBIS) schools. This study used Lifeworld Theory to engage in discussion about the teachers’ individual experiences in using PBIS in their classrooms in relation to resilience frameworks and childhood trauma. The teachers’ individual experiences were analyzed using a Whole-Part-Whole analysis to bring the individual stories together to better understand how PBIS and childhood trauma are experienced in a specific Appalachian school. Discussion opens up through the participants' experiences about grit models in school, trauma their …

Ear Biometrics: A Comprehensive Study Of Taxonomy, Detection, And Recognition Methods, Susan Awm El-Naggar

Graduate Theses, Dissertations, and Problem Reports (ETD)

Due to the recent challenges in access control, surveillance and security, there is an increased need for efficient human authentication solutions. Ear recognition is an appealing choice to identify individuals in controlled or challenging environments. The outer part of the ear demonstrates high discriminative information across individuals and has shown to be robust for recognition. In addition, the data acquisition procedure is contactless, non-intrusive, and covert. This work focuses on using ear images for human authentication in visible and thermal spectrums. We perform a systematic study of the ear features and propose a taxonomy for them. Also, we investigate the …

Developing Teaching Adaptability In Pre-Service Teachers Using Practice-Based Teacher Education, Kyuil Cho

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to examine how pre-service teachers (PSTs) develop their teaching adaptive competence through teaching rehearsal and repeated teaching, which is one of the focused teacher education strategies in practice-based teacher education (PBTE). This study was conducted in an introductory teaching methods course of a physical education teacher education (PETE) program. A total of 22 PSTs participated in the study. Fourteen were male, and eight were female. The PSTs had varied coaching experiences ranging from little to no coaching in limited recreational sports settings, and none had teaching or coaching experience in the school setting.

A …

Assessment Of Electronic Cigarette User Terminology And Knowledge Using Mixed Methods, Margaret G. Childers-Kakos

Graduate Theses, Dissertations, and Problem Reports (ETD)

Electronic cigarettes (ECIGs) have evolved rapidly over the past several years, and it is unclear if terminology used when assessing ECIG knowledge and use behavior has objective and well-understood definitions between consumers, as well as between consumers and the research community. The purpose of this study was to use semi-structured interviews to obtain a better understanding of ECIGs from the perspective of regular ECIG users. One-hour interviews consisted of both open- and closed-ended questions. Questions probed the terminology used by participants to describe both individual and combination device features, as well as ECIG use behaviors. Qualitative data was used to …

Love At First Profile: An Experiment Exploring If Previously Incarcerated Individuals Are Less Desirable While Online Dating, Carina L. Perrone

Graduate Theses, Dissertations, and Problem Reports (ETD)

Incarceration is a rapidly increasing occurrence in the United States with more than 1.4 million people incarcerated and more than 2 million on some form of restricted confinement. While men are incarcerated at a much higher rate than women, women are still at a steady incline of incarceration as well. Also, people of color disproportionately make up a large number of those incarcerated while accounting for a small percentage of the general population. Previous research on people who have been incarcerated focuses on it affects education, employment, and marriage. Little research has attempted to explore how incarceration effects dating, a …

Scaling Theory Of 3d Magnetic Reconnection X-Line Spreading, Milton Arencibia

Graduate Theses, Dissertations, and Problem Reports (ETD)

Magnetic reconnection is fundamental process in plasmas that converts magnetic energy into kinetic and thermal energy via a change in magnetic topology. Magnetic reconnection is known to mediate eruptive solar flares, geomagnetic substorms that create the Northern lights, heating and particle acceleration in controlled fusion devices, and is thought to be an important process in numerous settings in high-energy astrophysics. Classical models of reconnection are two-dimensional (2D), but naturally occurring reconnection is three-dimensional (3D), and a manifestation of the 3D nature is that the x-line where the magnetic field topology changes has a finite extent in the direction normal to …

Decentralized Cooperative Localization For Multi-Robot Systems In Challenging Environments, Eduardo Gutierrez

Graduate Theses, Dissertations, and Problem Reports (ETD)

Multi-robot systems provide more adaptability and robustness than conventional single-robot systems. This is because they have the ability to achieve partial completion of a task in the presence of failures due to the intrinsic inclusion of non-single-point failure. In multi-robot systems, cooperative localization refers to the use of relative measurements to improve the group’s overall localization performance. While centralized architectures in the system may result in unfeasible cases due to the high cost of computation and communication, decentralized methods distribute the computation among the robots in the group, enhancing the performance and making the system more efficient. Achieving a reliable …

Aging, A Pathological Factor In Neurological Injury, Aruvi Vijikumar

Graduate Theses, Dissertations, and Problem Reports (ETD)

One of the main reasons for CNS drugs to fail in clinical development is not considering age as a risk factor while studying chronic age-related neurological/neurodegenerative diseases in preclinical studies. We first set out to gain a comprehensive understanding of the impact of age on various aspects (anatomical, immunological, and biochemical) in rodents that play a key role in determining the onset, progression, and evolution of disease severity. With advancing age, the vascular structure and function are compromised which is hypothesized to accelerate cognitive decline. The initial step toward developing novel therapeutics is to characterize the age-related vascular modifications. Utilizing …

A Narrative Inquiry Into The Influence Of School Shooting Survival On College Transition And Experience, Jayne M. Piskorik

Graduate Theses, Dissertations, and Problem Reports (ETD)

There is an extensive body of school-related shooting research exploring causes, how to recognize a threat, and what preparedness measures are effective (Lee et al., 2020; Muchert, 2007). However, there is insufficient research on how the broader context of school-related shootings in American society has influenced college-aged students. The purpose of this study was to tell the story of how students have been influenced by their experience surviving the 2018 Marjory Stoneman Douglas High School shooting during their transition to and performance in higher education. Narrative inquiry provided a deeper understanding through narrative retelling of the perceptions, decisions, and experiences …

Validity Evidence For The Male Depression Risk Scale-22 (Mdrs-22) In Younger And Older Adult Males, Montgomery T. Owsiany

Graduate Theses, Dissertations, and Problem Reports (ETD)

Men are two times less likely to be diagnosed with major depressive disorder than women. However, suicide rates are nearly four times higher in men than women, increasing to six times when comparing older men to older women. Given that affective disorders are present in most individuals who die by suicide, investigators have begun researching the possibility that depression presents differently in individuals who adhere to traditional masculine norms, leading to the conceptualization of masculine depression. Presently, one assessment for masculine depression shows strong reliability and validity evidence: the Male Depression Risk Scale-22 (MDRS-22). Despite burgeoning validity evidence for the …

A Quality Improvement Initiative Regarding Ondansetron In The Prevention Of Spinal Anesthesia-Induced Hypotension, Kassidy Dell Nutter

Graduate Theses, Dissertations, and Problem Reports (ETD)

Spinal anesthesia is an excellent choice as the primary anesthetic for lower abdominal, perineal, and lower extremity procedures. Spinal anesthesia boasts several distinct advantages over general anesthesia. However, it is important to note that spinal anesthesia does not come without risk. The most common adverse reaction of spinal anesthesia is hypotension. Anesthesia providers use several methods to combat the hypotension that is so commonly associated with spinal anesthesia. One emerging trend to prevent spinal anesthesia-induced hypotension (SAIH) is the administration of ondansetron, a serotonin 5-hydroxytryptamine3 antagonist. Evidence has shown that the administration of ondansetron just prior to spinal anesthesia administration …

Standardized Postoperative Handoff Tool To Improve Handoff Quality, Haley Durkacz

Graduate Theses, Dissertations, and Problem Reports (ETD)

Abstract

Effective communication between healthcare providers is an essential element in the delivery of safe patient care. Loss of relevant information can occur during all phases of patient care but is most inclined to occur during the handoff from the operating room to the postoperative anesthesia care unit (PACU). Evidence has indicated that the transfer of patients by anesthesia providers remains informal and brief despite practice guidelines. When pertinent details are omitted during the anesthesia handoff there is a potential increase for medical errors, delayed treatment, and patient harm. The purpose of this project was to analyze the use of …

Implementation Of An Amiodarone Infusion Nurse Practice Guideline To Reduce The Incidence Of Phlebitis: A Quality Improvement Project, Kristen N. Cottrill

Graduate Theses, Dissertations, and Problem Reports (ETD)

Background: Patients have an increased risk of developing phlebitis when amiodarone is delivered through a peripheral intravenous catheter. In a 32-bed cardiac surgery step-down unit, patients experienced phlebitis at a rate of 28.57% despite following manufacturer recommendations. Individual interventions targeted at amiodarone-related phlebitis have presented mixed results, however, when an amiodarone infusion practice guideline was established, the rate and severity of phlebitis consistently decreased across studies. Purpose: This project aimed to implement an evidence-based amiodarone infusion guideline to reduce phlebitis development or severity in cardiac-surgery step-down patients without a central venous catheter who received a peripheral intravenous infusion of amiodarone. …

Implementation Of An Advanced Training Program To Increase Nurses’ Knowledge Of Continuous Renal Replacement Therapy Management, Shane M. Brost

Graduate Theses, Dissertations, and Problem Reports (ETD)

Background: Continuous renal replacement therapy (CRRT) is a complex, life-preserving treatment for unstable patients who require hemodialysis in the intensive care unit (ICU). Nurses responsible for managing the CRRT machine in this large academic medical center’s cardiovascular ICU (CVICU) complete a one-hour basic training course focused on setting up the machine, responding to basic alarms, and changing out the CRRT circuit when necessary. Staff nurses, advanced practice providers (APPs), and nursing administrators agree that training is insufficient. Research evidence supports rigorous staff training as essential to improving the quality of CRRT delivery. Purpose: This Doctor of Nursing Practice (DNP) project …

Enhanced Sampling Techniques Reveal Key Information About Membrane Active Peptides, Nicolas Charles Frazee

Graduate Theses, Dissertations, and Problem Reports (ETD)

Membrane active peptides (MAPs) show promise in terms of future drug development. Whether it be adapting macrocycles for use in targeting protein-protein interactions or adopting cell-penetrating peptides (CPPs) to cause lysis in target cells, the field is burgeoning with possibilities for designer drugs. The following work encompasses the exploration of three such peptides. The pH-Low Insertion Peptide (pHLIP) is a membrane-active peptide that spontaneously folds into a transmembrane $\alpha$-helix upon acidification. This activity enables pHLIP to potentially act as a vector for drugs related to diseases characterized by acidosis such as cancer or heart ischemia. First, we explored the conformational …

Diversifying Piano Literature: East Asian Music For Piano Study And Performance In The United States, Akina Kondoh

Graduate Theses, Dissertations, and Problem Reports (ETD)

This research paper describes the extent piano music by East Asian composers has been incorporated in piano teaching at the college level in the United States. Included are the results of a survey of piano teachers at National Association of Schools of Music-accredited collegiate institutions; a discussion of the need for diversification of piano literature given the demographics of piano students in the United States; and several strategies to incorporate piano music by East Asian composers. The paper also includes a list of composers and resources available for obtaining piano works by East Asian composers.

Polarization Properties Of Millisecond Pulsars: Astrophysical Interpretations And Applications, Haley Megan Wahl

Graduate Theses, Dissertations, and Problem Reports (ETD)

Pulsars are some of the most extreme objects in the universe; their small yet incredibly predictable spin periods coupled with their strong magnetic fields make them ideal laboratories for study. Not only are they interesting objects themselves, but they can also help us probe different astrophysical environments, such as the interstellar magnetic field and the solar corona.

These stars are highly polarized, and that polarization comes into play in various fields of pulsar physics (such as constraining models of pulsar emission), but obtaining that polarization information can be difficult, as the polarization properties of the light can change as the …