Digital Commons Network^™

Interior Point Optimization Of Low-Thrust Spacecraft Trajectories, Jordan D. Frederiksen

Master's Theses

Low-thrust interplanetary spacecraft trajectory optimization poses a uniquely difficult problem to solve because of the inherent nonlinearities of the dynamics and constraints as well as the large size of the search space of possible solutions. Tools currently exist that optimize low-thrust interplanetary trajectories, but these tools are rarely openly available to the public, and when they are available they require multiple interfaces between multiple different packages. The goal of this work is to present a new piece of low-thrust interplanetary spacecraft trajectory optimization software that is open-source and entirely self-contained so that more people can have access to the ability …

Take The Lead: Toward A Virtual Video Dance Partner, Ty Farris

Master's Theses

My work focuses on taking a single person as input and predicting the intentional movement of one dance partner based on the other dance partner's movement. Human pose estimation has been applied to dance and computer vision, but many existing applications focus on a single individual or multiple individuals performing. Currently there are very few works that focus specifically on dance couples combined with pose prediction. This thesis is applicable to the entertainment and gaming industry by training people to dance with a virtual dance partner.

Many existing interactive or virtual dance partners require a motion capture system, multiple cameras …

Multi-Assay Nutritional Metabolomics Profiling Of Low Vitamin A Status Versus Adequacy Is Characterized By Reduced Plasma Lipid Mediators Among Lactating Women In The Philippines: A Pilot Study, Catherine M. Johnson

Master's Theses

Background: A significant portion of lactating women in less developed countries have vitamin A (VA) deficiency. Lactation has substantial effects on a mother’s metabolism and VA is known to be needed in multiple biological processes, including growth, vision, immunity, and reproduction.

Objective: The objective of this pilot study was to utilize metabolomics profiling to conduct a broad, exploratory assessment of differences in plasma metabolites associated with low VA status versus adequacy in lactating women.

Methods: Plasma samples from lactating women who participated in a survey in Samar, Philippines, were selected from a cross-sectional study based on plasma retinol concentrations indicating …

Exploring Communication Strategies Used By Speech-Language Pathologists And Nursing Professionals Prior To And During The Coronavirus Disease 2019 Pandemic, Madeline Baretta

Master's Theses

In 2019, a novel virus was discovered and spread resulting in a global pandemic. Individuals with severe cases of coronavirus disease 2019 (COVID-19) experienced critical illnesses such as pneumonia, hypoxemic respiratory failure/acute respiratory distress syndrome (ARDS), and complications from prolonged hospitalization (Centers for Disease Control and Prevention [CDC], 2020e). Some individuals with severe cases required mechanical ventilation in the acute care setting (Bernstein, 2020). Due to the rapidly evolving nature of the pandemic, this study was developed to better understand the practices of speech-language pathologists (SLPs), nursing professionals, and healthcare organizations prior to and during the COVID-19 pandemic with particular …

Demographic Predictors Of Math Anxiety In Elementary School Children, Melissa Flowerdew

Master's Theses

Due to the increasing interest of math anxiety in elementary level children, the present study explored math anxiety contextual factors through Bandura’s (1999) Social Cognitive perspective. Using the Children’s Anxiety in Math Scale, researchers gathered data from 40 primary-level children to explore four demographic predictors--grade-level, special needs identification, gender identity, and socioeconomic status-- of mathematics anxiety through a hierarchical regression model. Findings indicated demographic variables accounted for over one-third of the variance in math anxiety scores at 38.2% (grade level: 12.3%, SNI: 8.4%, gender identity: 13.2%, SES: 4.1%). With the exception of socioeconomic status, all predictors were significant. These findings …

The Inclusion Of Vocal Health In The School Curriculum: A National Survey Of School-Based Speech-Language Pathologists And Speech-Language Pathology Assistants, Kate Mathews

Master's Theses

The human voice is an important tool of expression and a defining quality of self. Additionally, many occupations require, at least in part, a functioning voice for job completion (Titze et al., 1997). It is not surprising, then, that a dysfunctional voice may be disruptive and have a negative impact on a person’s quality of life. Unfortunately, disorders of voice are common, and perhaps even more so than many may realize (Bhattacharyya, 2014; Hartley et al., 2016; Roy, 2003; Roy et al., 2005). Several voice disorders, however, are preventable through the very same vocal health education means used in voice …

Speech-Language Pathologists’ Knowledge, Confidence Levels, And Practice Patterns With Mild Traumatic Brain Injury In The Schools, Jessica Munson

Master's Theses

Speech-language pathologists (SLPs) play a key role in serving children with cognitive-communication disorders in both medical and school settings. However, there remains little evidence regarding school-based SLPs’ service delivery for children following concussion or mild traumatic brain injury (mTBI) and how they rate their confidence, knowledge, and skills providing these services. The purpose of this study was to examine knowledge, confidence levels, and practice patterns for providing services to pediatric students with mTBI among school-based SLPs. A 43- item survey was developed to assess current concussion knowledge, and to allow for comparison to previous and future surveys on knowledge, confidence, …

The Well-Being Of Business Professionals Through The Participation Of Golf With Coworkers And Clients, Marisa Hisaki

Master's Theses

The purpose of this study was to explore and understand how participation of golf influences the well-being of business professionals and how organizations could incorporate activities such as golf to their management practices. Open-ended, semi-structured interviews (Kvale, 1996) were utilized in this study to explore and understand how golf influences the well-being by expressing their experience of the phenomenon of the effects of golf. Seven participants were interviewed, where three were insiders and four were outsiders. The age of the participants ranged from 23-68 years, with the average being 49.7 years. Of the seven participants, six were male and only …

To Vote Or Not To Vote: An Assessment Of How Felony Convictions And Incarceration Affects Voting Practices, Tammy Ortiz

Master's Theses

Felon disenfranchisement has a long history in the United States, beginning with Jim Crow Laws, continuing with mass incarceration, and increasing with voter suppression policies and laws being created on a daily basis. This paper will include a brief history of voting suppression and how felony convictions and incarceration create further obstacles for individuals choosing to share their voices and elect officials who represent them within the government. Theories involved in this research include labeling, anomie, citizenship, and both social control and social conflict and combined will demonstrate how the criminal justice works to control individuals under supervision, so much …

Long Term Recovery From Cattle Grazing Disturbance And Climate Impacts At Capitol Reef National Park, Utah, Erin Tessens

Master's Theses

Cattle grazing has influenced the environment in the western United States since European settlement in the 1800’s. Continuous and heavy grazing on arid and semi-arid rangelands has resulted in decreased biodiversity, changes in vegetation structure, and vulnerability to exotic plant invasion. Heavy grazing has also been linked to decreased cryptobiotic soil due to trampling and susceptibility to erosion. With a lack of effective means of successful habitat restoration, there is a rising concern among land managers to maintain these intricate systems, notably under the threat of climate change. Consequently, there is a critical need to understand these system’s response to …

Comparison Of Two Advanced Oxidation Processes For Their Production Of Hydroxyl Radicals And Evaluation Of A Uv/Ozone Aop At Varying Uv Fluence For Treating Diclofenac, Alexandra Cass

Master's Theses

This study explores the efficacy of two advanced oxidation processes for generation of hydroxyl radicals to promote degradation of emerging contaminants. Drought and water shortage have become pressing issues caused by our world’s changing climate. Water reclamation and reuse are increasingly important options for relieving this water stress. Water reuse runs the risk of reintroducing recalcitrant compounds that can accumulate in our bodies and environment. Advanced treatment methods that degrade these compounds are vital to protect our health and the health of the environment while providing necessary water resources. Advanced oxidation processes (AOPs) have shown great promise for removing recalcitrant …

Women As Party Leaders: Are The Barriers Partisan?, Amanda B. Yates

Master's Theses

Even though women make up roughly 51% of the population of the United States, they are underrepresented in all branches of American government. Although there has been recent literature on women in politics and women and parties, very little has been done on women in party leadership. Research suggests that there are fewer women in elected office because of a lack of supply, or qualified and willing women, or a lack of demand, an electorate willing to vote for a woman. This study seeks to understand the levels of participation of women as party delegates in state party conventions and …

Spatial And Seasonal Patterns Of Above- And Belowground Vegetation Biomass And Potential Drivers In The Pascagoula River Delta, Ms, Evan Grimes

Master's Theses

Coastal wetlands provide a valuable wealth of services to the greater coastal ecosystem and human communities. However, threats such as sea level rise and conservation projects, such as freshwater diversions, have the potential to alter coastal wetlands in different ways. In this thesis, I describe the effects of inundation and nitrogen on vegetation productivity using a field-sampling approach and an in situ controlled mesocosm experiment, called a marsh organ. The West Channel of the Pascagoula River contained significantly higher belowground biomass than the East Channel, which is more anthropogenically modified. Vertical distribution of belowground biomass did not strongly vary between …

Paradoxes Of The Heart And Mind: Three Case Studies In White Identity, Southern Reality, And The Silenced Memories Of Mississippi Confederate Dissent, 1860-1979, Billy Loper

Master's Theses

This thesis is meant to advance scholars understanding of the processes by which various groups silenced the memory of Civil War white dissent in Mississippi. It analyzes three case studies: F. A. P. Barnard’s 1860 trial for abolitionism, the transformation of community memory which surrounded Newt Knight in the early twentieth century, and Mississippi’s interaction with the Civil War through popular culture. These examples will reveal the cultural and discursive systems that have existed in the state for more than a century. This work argues that Mississippians silenced the memory of racial dissent throughout the state’s history because it conflicted …

Determining Subgroups That Exist Among Us Firearm Owners, Allison Eileen Bond

Master's Theses

Objective: The present study sought to identify and verify unique classes of firearm owners that exist within the United States (US) and to determine the sources that each class deemed credible to discuss safe firearm storage for suicide prevention. Methods: The study is composed of three parts, each with its own unique sample. Part 1 (N = 1,018) utilizes a nationally representative sample of firearm owners. Part 2 (N = 1,064) consists of firearm owners from Mississippi, Minnesota, and New Jersey. Lastly, Part 3 examined the samples from Mississippi (n = 308), Minnesota (n = 379), …

Contextualizing A Crisis: Examining Michigan State University Press Releases And The Larry Nassar Scandal, Courtney Robinson

Master's Theses

The purpose of this study was to conduct a contextual analysis of press releases published by Michigan State University following a 2016 scandal that accused long-term physician Larry Nassar of sexually abusing more than 250 young women and girls under the guise of medical care. Specifically, the researcher was concerned with the image repair strategies employed by Michigan State as it attempted to respond to accusations that university personnel were aware of Nassar’s actions and had failed to act. The institution found itself responding to a series of distinct, yet related, crises, which were documented in a series of press …

An Annotated Bibliography Of Selected Music Theory Resources For The Middle And High School Choral Classroom With Alignment To Mississippi College- And Career-Readiness Standards, Amanda M. Brandon

Master's Theses

Middle and high school choral ensembles often struggle to produce musicians who are proficient in music theory skills; however, music theory and ear training skills provide numerous benefits to the student and ensemble. Promoting and fostering theory and ear training skills develop a student’s overall musicianship – thus, strengthening sight-reading skills– further leading to more accurate sight reading, using less rehearsal time, and the option of learning more, or even more technically challenging, literature. Additionally, developing independent musicianship skills encourages higher order and critical thinking in the choral classroom.

This project will examine and review selected music theory and ear …

Comparison Of Supported Liquid Extraction And Solid Phase Extraction Of Methamphetamine From Urine And Method Validation By Gas Chromatography-Mass Spectrometry, Taylor Hood

Master's Theses

Applications of SLE (supported liquid extraction) is a relatively new extraction technique that is not widely used in forensic toxicology. SLE is also easier and less time consuming than traditional LLE (liquid-liquid extraction) and SPE (Solid phase extraction). This work will compare the extraction efficiencies between SLE and SPE for methamphetamine from urine with detection and quantitation using GC-MS (gas chromatography- mass spectrometry). The SLE cartridges provide better analyte recoveries, eliminate emulsion formation, and allow for shorter processing time than other extraction techniques. The SPE cartridges used have a mixed-mode non-polar/strong cation exchange retention mechanism to extract basic analytes like …

Women Under Colonial Coverture: Divorce, Property Rights, And Inheritance In Early Massachusetts, Sarah Anne Hogue

Master's Theses

This thesis focuses on the evolution of women's legal rights - property, inheritance, and divorce- in colonial Massachusetts between 1630 and 1690. The project explores how and to what extent the legal doctrine of coverture- which severely limited married women’s legal rights- functioned in the Massachusetts Bay Colony under its Puritan government. This study examines how coverture directly impacted women’s property and divorce rights in the courts of law in the colonial Massachusetts legal system. It uses primary documents, such as official court records and Puritan sermons, to examine women’s legal rights in that colony through the intersecting lenses of …

Climate Adaptation And Water Conservation Decision-Making In Paso Robles, California Vineyards, Christopher R. Klier

Master's Theses

This paper examines vineyard perceptions and adoption of climate change adaptation and water conservation measures in the Paso Robles American Viticultural Area (AVA). A survey was distributed to all 220 vineyards and vineyard management companies that operate in the AVA, with a 53.64% response rate. The objective of the survey was to determine vineyard manager and owner attitudes towards climate change and adaptation, as well as their perceptions of how these threats would impact their operation. A second objective was to document the current level of water conservation and climate adaptation while identifying the barriers and opportunities for further adoption …

Comparison Of Animal Versus Plant-Based Protein Supplementation To Nitrogen Balance In Female College Students, Adeline Maykish

Master's Theses

Plant-based diets have become popular in the past 10 years, with approximately 11% of Americans self-identifying as vegan or vegetarian, and many others trying to reduce meat consumption. Due to this increasing interest, the plant-based food market has exploded with several novel innovative products serving as alternatives to animal-based products. One such example is almond protein powder, a fairly new protein supplement created as an alternative to whey protein. A number of studies have compared animal-based protein supplementation, such as whey to plant-based supplementation, such as soy, on muscle protein synthesis and skeletal muscle preservation. Due to the novelty of …

“My Bruises Are Inward:” A Study Of Mental Trauma In The American Civil War, Cody Turnbaugh

Master's Theses

War is traumatic. Since the American Psychiatric Association first recognized post-traumatic stress disorder (PTSD) in 1980, living veterans of combat have been diagnosed at an alarmingly high rate. However, mental trauma related diagnoses have existed for centuries, including several that were identified around the time of the American Civil War. This thesis argues that Civil War soldiers experienced mental trauma related to their military service. It does so through three lenses. Focused on the mental trauma among Northern veterans, this study investigates in particular the relationship between mental trauma and socioeconomic status. It analyzes the experiences of both white and …

Analyzing The Consistency Of Scoring Porotic Hyperostosis From 3d Scans, Carson Rouse

Master's Theses

The use of 3D scans is becoming more and more common in the field of bioarchaeology. They alleviate the need to travel, allow for larger sample sizes, and can help preserve bones with pathologies on them which make them more fragile. Though there are major benefits with using 3D scanning of human remains, there is a lack of studies which examine whether or not traditional pathology scoring methods can be used to consistently gather the same data from these 3D scans. This project examines how consistently six researchers of varying experience levels scored porotic hyperostosis from 25 3D scans on …

Different Class: The Creation Of The Premier League And The Commercialization Of English Football, Colin Damms

Master's Theses

This project examines how English football evolved from a culture of hooliganism and poor upkeep into a popular and enterprising industry across the globe. The Premier League and its stars marketed the English game and its culture worldwide. Since the 1990s England has established itself as the leading club footballing nation. I argue that through football, and the culture and economics behind it, we can see the ways in which England attempted to change its image in the modern world. In the 1980s and 1990s Britain was confronted with its own established culture of violence, bigotry, and nationalist pride, particularly …

Characterization Of The Bacterial Microbiome Of Exotic Tick Species Collected From Migratory Birds, Raima Sen

Master's Theses

Migratory birds often serve as natural/accidental hosts to ectoparasites like ticks (predominantly immature stages) and are known reservoirs of several pathogens transmitted by ticks. Parasitizing these birds, exotic tick species often hitch rides to non-native ecological niches, bringing along tick-borne pathogens. This study aims to profile the bacteriome of exotic tick species flying in and out of the US from the Neo-tropical South. A total of 421 tick samples comprised of several different tick species were collected off migratory songbirds at sites north of the Gulf of Mexico (Louisiana State). A 16S rRNA metagenomic multiplexed sequencing approach was used to …

The Effects Of Segmenting Worksheets On Independent Seatwork With Elementary Students Delivered In A Remote Manner Using Parents As Interventionists, Lauren Peak

Master's Theses

Students have a limited amount of time each day to complete independent assignments. These assignments prioritize the learning opportunities provided to students. Learning opportunities or the chance to practice with feedback is highly effective, and additional repetition enhances the learning experience. By increasing student's time-on-task, they will be provided more learning opportunities. This study sought to discover if segmented work could increase the number of problems completed, digits correct per minute and on-task behavior. An alternating treatment design across four participants allowed for the comparison of segmented worksheets and whole worksheets. Additionally, parents served as the interventionist in this remote …

Effect Of Borrelia Burgdorferi On The Amyloid-Beta And Phospho-Tau Markers And Oxidative Stress Response Of Neuroblastoma Cells, Dina Elzohiry

Master's Theses

In Alzheimer's disease (AD), the neurons are injured and mostly subjected to death throughout the brain, interconnections between neural networks may detach, and several regions of the brain begin to shrink in size. Amyloid-Beta (Aβ) and phospho-tau (p-Tau) are considered as main hallmarks of AD. Lyme-causing bacteria Borrelia burgdorferi can invade central nervous system resulting in neurological disorders. To evaluate how B. burgdorferi bacteria can contribute to the development and/or progress of AD, protein expression of Amyloid-Beta aggregates and p-Tau protein tangles were assessed before and after infection with B. burgdorferi in BE2C and Kelly neuroblastoma cell lines. To assess …

Depressive Symptoms And Marijuana Outcomes In College Students: The Mediating Role Of Protective Behavioral Strategies For Marijuana, Nicholas Militello

Master's Theses

The present study evaluated the sequentially mediating role of protective behavioral strategies for marijuana (PBSM) and marijuana use frequency on the relationships depressive symptoms had with hazardous marijuana use and marijuana-related negative consequences in college students Participants were 338 (50.3% male) undergraduate college students age 18 to 25 (M = 22.10; SD = 1.97) who reported marijuana use in the past 30 days. Participants reported their gender and completed measures of depressive symptoms, PBSM use, marijuana use frequency, marijuana-related negative consequences, and hazardous marijuana use through an online survey from a 2018 project. Depressive symptoms were positively associated with …

Polycyclic Aromatic Hydrocarbons And The Microbiomes Of Two Benthic Species, Samantha Ells

Master's Theses

The presence of oil has been shown to affect the microbiomes of the water column, sediments, and organisms, both by altering the diversity and the composition of those microbial communities. If the microbiome is altered it may no longer provide benefits to its host organism, impacting its ability to survive. Thus, it is important to understand the effects of large-scale contamination events including the Deepwater Horizon oil spill. This study set out to examine the effects of oil exposure on the microbiome of two benthic species, southern flounder (Paralichthys lethostigma) and eastern oysters (Crassostrea virginica) to further understand the effects …

Population Parameter Estimation And Stable Isotope Analysis Of Gulf Sturgeon (Acipenser Oxyrinchus Desotoi) In The Pascagoula River, Alfonso Cohuo

Master's Theses

Gulf Sturgeon (GS), Acipenser oxyrinchus desotoi, are a threatened, anadromous fish species in the northern Gulf of Mexico. Their range is from the Pearl River, LA, in the west to the Suwannee River, FL, in the east with a longitudinal divide at Mobile Bay, AL, creating a western population unit (WPU) and an eastern population unit (EPU). Sturgeon belonging to the WPU exhibit lower abundances, higher mortality rates, and are overall less studied than their EPU counterparts. Notable data gaps for the WPU includes the absence of recent population parameter estimations and confirmed feeding habitat. My thesis aims to …