Digital Commons Network^™

The Effect Of Visual Feedback On Vocal Compensation Abilities In Individuals With Post-Stroke Aphasia, Marissa Rylee Olson

Theses and Dissertations

Speech production is a complex and highly organized process comprised of various sensory and perceptual components. Post-stroke aphasia can impair speech production abilities by interrupting individuals’ ability to detect and correct speech errors and produce their targeted behavior. Contemporary models of speech production aim to understand the relationship between sensory systems and the human ability to produce perceptually accurate speech. This study seeks to understand the relationship between visual feedback and vocal compensation abilities in individuals with post-stroke aphasia to determine the effectiveness of incorporating visual feedback into therapeutic expressive language intervention. It was hypothesized that that the multi-sensory experimental …

The Parental Well-Being Gap Before And After The Covid-19 Pandemic, Morgan Renee Koziol

Theses and Dissertations

Prior research has examined the emotional costs and benefits associated with parenting. In general, this body of literature finds that parents experience lower levels of subjective well-being compared to non-parents—a phenomenon referred to as the parental well-being gap. There is evidence that this parental well-being gap has narrowed or disappeared altogether in more recent years. However, the COVID-19 pandemic presented unprecedented challenges to parents that may have resulted in a widening or reopening of this gap once again. This project aims to test this possibility by drawing on data from The General Social Survey that capture the survey year prior …

Advanced Prognostic Modeling For Breast Cancer Patients: Leveraging Data-Driven Approaches For Survival Analysis, Theophilus Gyedu Baidoo

Theses and Dissertations

Breast cancer is the second most prevalent form of cancer in women in the United States. Each year, about 264,000 cases of breast cancer are diagnosed in women and of this number, about 42,000 women lose their lives as reported by the Centers for Disease Control and Prevention. Early detection and effective treatment are crucial for improving survival rates and reducing mortality. This study aimed to explore the influential factors that may risk the survival of women with the disease and compare their predictive abilities using several error and performance metrics. The study uses a dataset from the National Cancer …

Examining The Psychological Outcomes Of Decent Work: An Extension Of The Psychology Of Working Theory, Zachary Hesson

Theses and Dissertations

Decent work (DW) has important implications for several aspects of people's lives. There is significant research on the societal implications of DW, but there is scant research on th e individual outcomes that are associated with DW. Using the psychology of working theory (PWT) as a theoretical framework, I explore d how access to DW can impact meaningful work ( and life satisfaction through satisfaction of different work needs as well as whether work orientation moderates the relationship s between work needs and these two outcome variables. More specifically, this thesis contribute s to our understanding of the implications of …

Increasing Cheerleader Safety Through The Observer Effect, Madison Elizabeth Duke

Theses and Dissertations

Cheerleading has a high rate of serious injuries, but the safety of cheerleaders has seldom been researched. Behavior analytic research has never investigated cheerleading and has rarely focused on improving the safety of athletes. The present study examined scored observations, a common intervention in the behavior-based safety literature, as a method to increase the safety of cheerleaders completing basic movements. This has previously been shown to produce the observer effect, wherein an observer’s safe behavior is increased after observing and scoring the behavior of another performer. Scored observations alone increased basic cheerleading movements to a mastery criteria for one of …

Further Evaluation Of The Effects Of Music And Rird On Vocal Stereotypy, Keith Happel

Theses and Dissertations

Vocal stereotypy (VS), or vocalizations that are noncontexual or nonfunctional, is commonly exhibited in individuals on the autism spectrum. The nature of vocal stereotypy may pose an issue for some individuals, ranging from social ostracization to the inability to perform daily tasks. Previous research has shown that access to matched stimulation (e.g., music) and response interruption and redirection (RIRD), a form of punishment, are effective at decreasing vocal stereotypy (Gibbs et al., 2018). However, in the aforementioned study, researchers did not evaluate a less intrusive treatment in isolation prior to implementing punishment. The purpose of the current investigation is to …

The Role Of Tc-Ptp-Mediated Suppression Of Autophagy During Skin Carcinogenesis, Obed Asare

Theses and Dissertations

Ultraviolet B (UVB) radiation can distort cellular homeostasis and predispose the skin to carcinogenesis. Amongst the deteriorating effects of the sun’s UVB radiation on cellular homeostasis is the formation of DNA photoproducts such as cyclobutene pyrimidine dimers. These photoproducts can cause significant changes in the structure and conformation of the DNA, inducing gene mutations which may accumulate to trigger the formation of skin cancer. Photoproducts are typically repaired by nucleotide excision repair. Notwithstanding, when the repair mechanism fails, apoptosis ensues to prevent the accumulation of mutations and to restore cellular homeostasis. We have identified T-cell protein tyrosine phosphatase (TC-PTP) as …

Identification Of Heart Disorders With Symbolic Aggregate Approximation, Moses K. Owusu

Theses and Dissertations

This project is an application of the Symbolic Aggregate Approximation (SAX) to 1000 fragments of ECG signals for 45 patients (42% females aged between 23 and 89 years and 58% males aged 32 to 89 years) using data obtained from the MIH-BIH Arrhythmia database to recognize cardiac health disorders. Data include a normal sinus rhythm, pacemaker rhythm and ECG readings for 15 heart disorders, making 17 in total. The aim is to use SAX to classify heart disorders using ECG signal, that analyzes QRS-complexes by first splitting the time series into smaller equally sized segments using the Piecewise Aggregate Approximation …

Initial Investigation Of Using The Waste Rubber Tires As A New Sustainable Material For Electric Conductive Rigid Pavement, Islam Radwan

Theses and Dissertations

The accumulation of snow on roadway surfaces has the potential to result in deadly accidents and financial damage. Traditional de-icing procedures, which include the use of chemicals or salt and the use of heavy machinery, may have a negative effect on the environment and the structural integrity of highway infrastructure systems, and they are not sustainable at all. In addition, these methods are considered labor-intensive and dangerous, especially in crowded areas. The use of heated pavement systems (HPS), which can be in the form of hydronic (HHPS) or electrically conductive concrete (ECON), has gained popularity in recent years as a …

Impacts Of Land Use On Stormwater Runoff In The Lower Rio Grande Valley And Improving Long Term Municipal Stormwater Management Systems, Maria Vanessa Pruneda

Theses and Dissertations

Exponentially noticeable growth in population and land development in the Lower Rio Grande Valley has directly influenced growth in urbanization. Urbanization is the leading cause for lower pervious cover, and the increase in storm water runoff. The increase of storm water runoff leads to excess flooding areas and higher peak flows. The overflow flows freely and is exposed to contaminants, affecting the consumption and use factors. The changes of land use have a direct relationship with impervious cover limitations and individual site retentions. This study will assess the relationship between stormwater quantity and land use in the Lower Rio Grande …

Utrgv Edinburg Campus Two-Dimensional Flood Modeling For Development Of Flood Inundation Map, Roxana Tello

Theses and Dissertations

Severe flooding is a natural hazard worldwide, potentially subjecting people to life threatening situations and leaving infrastructure vulnerable to structural damage or complete destruction. The common threat of flooding poses constant challenges for state and local agencies in identifying flood risks and proposing the necessary mitigation improvements. Developing hydraulic models to predict the hydrological interactions and identify areas at risk is a beneficial tool for urban planning. The Lower Rio Grande Valley (LRGV) is a rapid growing region in South Texas along the border of Mexico and west of the Gulf of Mexico. The LRGV has historically suffered through various …

A Data-Driven Method For Damage Detection In An Open Deck Steel Truss Railroad Bridge Under The Moving Train Load, Mahesh Pokhrel

Theses and Dissertations

Open-Deck (OD) steel truss railroad bridges are one of the most common types of railroad bridges in the United States. They are, however, significantly vulnerable to the dynamic effects of moving train load. In the long run, these dynamic effects cause fatigue damage to the structural members. The damage in most of the railroad bridges are monitored by visual inspections which are sometimes unreliable and inconsistent due to human error. This study explores the identification and classification of damage to an open deck railroad bridge from both time-domain (statistical features) and time-frequency domain features (Hilbert-Huang Transform) extracted through acceleration response …

Biochar Reduces The Pupation And Eclosion Of A Specialist (Manduca Sexta) And A Generalist Pest (Spodoptera Frugiperda), Nischal Wagle

Theses and Dissertations

Chapter 1: This chapter incorporates detailed information about the biochar concept, its production, composition, and properties, harmful arthropods and their damage, the effect of soil on the arthropod community, and the application of biochar on arthropod control.

Chapter 2: The comprehensive lab experiment was conducted with modified pupation media enriched with walnut shell biochar (Chapter II) to evaluate the effects of biochar on the pupation and eclosion success rates of a specialist (Manduca sexta) and a generalist pest (Spodoptera frugiperda). We found that the biochar treatment led to a significant reduction in pupal mass, adult mass, adult wingspan, body length, …

Image Segmentation With Human-In-The-Loop In Automated De-Caking Process For Powder Bed Additive Manufacturing, Vincent Opare Addo Asare-Manu

Theses and Dissertations

Additive manufacturing (AM) becomes a critical technology that increases the speed and flexibility of production and reduces the lead time for high-mix, low-volume manufacturing. One of the major bottlenecks in further increasing its productivity lies around its post-processing procedures. This work focuses on tackling a critical and inevitable step in powder-bed additive manufacturing processes, i.e., powder cleaning or de-caking. Pressing concerns can be raised with human involvement when performing this task manually. Therefore, a robot-driven automatic powder cleaning system could be an alternative to reducing time consumption and increasing safety for AM operators. However, since the color and surface texture …

Soil Moisture Dynamics In Cover Cropping Systems: From Local To Global Scales, Manish Gautam

Theses and Dissertations

Cover cropping systems, which have gained recognition for their ability to enhance soil health and promote sustainability are also associated with potential risks related with declining soil moisture and pose a dilemma for farmers considering the adoption of cover crops in water deficit semi-arid settings worldwide. To address this pressing issue, we conducted a participatory cover cropping trial in the Lower Rio Grande Valley (LRGV) region, encompassing four different farms and supplemented this experiment with a meta-analysis to answer our soil moisture and climate parameters and quantify the impact of cover crops on soil moisture levels. The findings revealed that …

Tamaulipan Thornforest Restoration: Factors Influencing Restoration Outcomes And Impacts Of Cover Crops During Replanting, Jerald T. Garrett

Theses and Dissertations

Though the rate of deforestation has slowed in recent years, it remains a primary cause of land cover change within forest ecosystems. The Lower Rio Grande Valley, Texas (LRGV) has lost nearly 95% of its native thornforest since the early 1900’s due to agricultural and urban expansion. The focus of this study is to assess the current vegetative state of restored thornforest sites located in the eastern LRGV and to evaluate the use of cover crops during replanting of native seedlings. Our assessment of restored thornforest sites revealed actively restored sites demonstrated higher overall averages of richness, abundance, and diversity …

Drug Repurposing: New Mechanisms And Applications Of Existing Compounds, Biyun Celia Cui

Theses and Dissertations

HIV infection remains a significant global health challenge. Despite the widespread use of combination antiretroviral therapy, people living with HIV (PLWH) still face a disproportionate burden of major health problems. One of these problems is HIV-associated neurocognitive disorders (HAND), which includes a spectrum of cognitive, motor, and behavioral impairments. Although severe forms of HAND have decreased, milder forms are on the rise, posing a significant obstacle for PLWH.

The persistence of HIV in the central nervous system (CNS) is a challenge of HAND treatment and involves a combination of factors, including neurotoxic HIV proteins, chronic neuroinflammation, and comorbidity with substance …

Cdk8 And Cdk19 Mediator Kinases As Novel Targets In Advanced Prostate Cancer, Jing Li

Theses and Dissertations

Following androgen deprivation therapy (ADT), prostate cancers (PCa) progress to castration resistant prostate cancer (CRPC) status, where their growth becomes independent of androgen signaling, through altered androgen receptor (AR) signaling or other genetic or transcriptional changes. Metastatic CRPC remains incurable, and the most potent new drugs prolong survival by only a few months. There is an urgent need for novel agents against advanced CRPC. Here we have investigated the roles of CDK8 and CDK19, two isoforms of Mediator kinase, which regulates transcriptional reprogramming, in regard to their biological activities and as potential novel targets for the treatment of CRPC.

To …

Approaches To Detecting And Modeling Over-And Underdispersion In Alternative Count Data Distributions And An Application Of Logistic Regression And Random Forest Modeling To Improve Screening Tools For Tic Disorders In Children, Rebecca C. Wardrop

Theses and Dissertations

This dissertation focuses on theory and application of discrete data methods, particularly approaches to over- and underdispersion relative to the Poisson distribution and an application of random forest and logistic regression modeling. The first chapter derives a score test for over- and underdispersion in the heaped generalized Poisson distribution. Equi-, over-, and underdispersed heaped generalized Poisson and heaped negative binomial data are simulated to evaluate the performance of the score test by comparing the power it achieves to that of Wald and likelihood ratio tests. We find that the score test we derive performs comparably to both the Wald and …

Words Evaporate, The Images Remain: Testing Visual Warnings In The Context Of Intentions To Vape Among U.S. Adults As An Expansion Of The Theory Of Planned Behavior (Tpb), Carl Arland Ciccarelli

Theses and Dissertations

This dissertation applied the Theory of Planned Behavior (TPB) model variables of attitudes, subjective norms, and perceived behavioral control, along with the variable of fear to explain individuals’ behavioral intentions to vape. Previous studies have explored the social appeal, intrigue, and potential consequences of vaping among adolescent and college student populations. However, these past studies have largely relied upon focus groups and self-reported data conducted among samples of teen, adolescent, and college student populations. Thus, the aims and designs of these previous vaping studies may have been lacking in construct validity and a theoretical approach from which to explain behavioral …

Effects Of Parenting And Self-Efficacy On Diet, Family Mealtime And Weight-Related Outcomes In African American Adolescents, Haylee Michele Loncar

Theses and Dissertations

Despite substantial research and concern, adolescent overweight and obesity continues to be a significant public health problem. Theory based on developmental literature emphasizes the role of adolescent self-regulatory factors, like self-efficacy, in health behavior engagement and weight-related outcomes. There is also extensive literature that highlights parents’ role in promoting self-regulatory development through warm and responsive behaviors and practices. However, few studies have considered longitudinal associations and changes in weight-related outcomes over time, as well as moderated effects by parenting. This study assessed longitudinal associations between adolescent self-efficacy parenting factors and adolescent BMI, diet, and family mealtime to fill gaps in …

Stem Educators’ Perceptions Of Gender Bias And The Contributing Factors That Persist For Women In Stem Education, Haleigh Nicole Kirkland

Theses and Dissertations

Social influence from society holds the key to social norms that influence students and their future aspirations. Gender bias is considered one of the influencing factors that affects the decisions of female high school students on participating in STEM education. This descriptive study describes the key factors that STEM educators perceived as influential for female high school students' participation in STEM education. The research questions of the study included: (1) What are high school STEM educators’ perceptions regarding gender bias in the STEM School of Study cluster at Skyler High School and (2) What factors do high school STEM educators …

Insurance Status And Cancer Staging, Time To Treatment, And Mortality: Examining Cancers Of The Breast, Colon, And Lung, Gabriel A. Benavidez

Theses and Dissertations

Introduction: When examining cancer outcomes, timely detection and treatment are critical factors for favorable prognoses. Previous studies have shown that individuals with public health insurance, specifically Medicaid, have worse cancer outcomes than those with private insurance. While differences in socioeconomic status may account for this disparity, one potential area for further investigation is the effect of Medicaid enrollment timing on cancer outcomes. In some states, individuals may not be eligible for Medicaid until after their cancer diagnosis, potentially nullifying health insurance benefits. This analysis examines the impact of Medicaid enrollment timing on cancer outcomes by comparing patients not enrolled in …

The Moderating Role Of Patient-Centered Culturally Sensitive Health Care On The Relationship Between Health Self-Efficacy And Patient Engagement Among Black American Adults, Kaylyn Ann Garcia

Theses and Dissertations

Black Americans continue to embody strength and resilience in the face of systemic racism and oppression. However, as health disparities experienced by Black Americans continue to widen, it cannot be expected that they be solely responsible to leverage cultural strengths to improve health and well-being in the face of systemic injustice. Instead, it is equally as important to consider the wealth of opportunities that exist for systems, organizations, and policies to dismantle barriers to health and well-being experienced by Black Americans. Therefore, the present study examined the moderating role of patient-centered culturally sensitive health care (PC-CSHC) on the relationship between …

Measuring Social Vulnerability And Exposure To Potential Risks Induced By Spaceport Operations In South Texas: An Empirical Study Utilizing Gis Methods And Social Vulnerability Indicators, Evan D. Garcia

Theses and Dissertations

The commercialization of space has increased spaceport development and activity across the United States. The magnitude of growth can be witnessed through the spaceport expansion and spacecraft testing at the SpaceX “Starbase” Launch Facility, located along the Texas-Mexico border. Matching the pace of SpaceX’s growth while evaluating levels of risk, the Federal Aviation Administration (FAA) diligently conducted a comprehensive Programmatic Environmental Assessment (PEA). While this assessment provides significant environmental impact data and risk analysis, much is left to understand regarding hazards and risk exposure to local communities. More specifically, research is needed to understand hazards associated with operational- and anomaly- …

Am I Committed Or Conflicted? Examining Implications Of Self-Concept Structure For Self-Regulation, Well-Being, And Performance, Nicholas Aaron Moon

Theses and Dissertations

Although research on self-concept is extensive, few studies have examined the relationship between specific aspects of self-concept structure (e.g., self-concept clarity) and self-regulation constructs (e.g., goal commitment). In addition, research has linked aspects of self-concept structure with well-being outcomes, but less is known about the mechanisms involved in these relationships. This research addresses these two issues by examining self-concept structure (self-concept clarity and self-concept differentiation) as antecedents of key self-regulatory mechanisms (goal commitment and goal conflict) and how these linkages may help explain connections between self-concept structure and well-being and performance. More specifically, two studies examined these relationships, with Study …

An Exploratory Study Of The Impact Of Quality Management Practices On Data Integrity Fda-483 Observations Received By Pharmaceutical Manufacturers In Florida, Sarah Mary Christie

Theses and Dissertations

Quality management systems and regulatory compliance have been studied in academic and practitioner settings (Andersson et al., 2006; Beattie & Sohal, 1999; Berrouiguet, 2013; McDowall & Ratcliff, 2016; Unger, 2019; Wechsler, 2019). While research has been performed on both topics independently, there has not been a definitive analysis of the relationship between quality management practices and regulatory compliance, especially in an FDA-regulated manufacturing environment. This research study attempts to link quality management practices and regulatory compliance and provides valuable insights for working managers on the practitioner level.

Actions Speak Louder Than Words: The Role Of Organization Segmentation Norms On Work-Family Enrichment, Engagement & Burnout, Sarah Jensen

Theses and Dissertations

Increased frequency of virtual work environments has changed the dynamics of boundary management decisions for employees and underscored the importance of organizations being aware and purposeful of how their norms will impact their employees. The goal of this study was to a) understand how organizations norms towards segmentation impact employee burnout, engagement, and enrichment, and b) how segmentation preferences, job demands, and job crafting strengthen these relationships. Two samples of participants were recruited from a mental health organization (N = 73) and mTurk (N = 80) to complete surveys on the variables for the study. Organizations with a norm for …

The Influence Of Benevolent Sexism In Teams: A Team Composition And Attribute Alignment Approach, Catherine Warren

Theses and Dissertations

Researchers have long struggled with harnessing the benefits accompanying diversity, such as increased knowledge sharing and the diverse expertise of individuals. One barrier that hinders taking advantage of such diversity is discrimination, such as sexism. Indeed, evidence has indicated that subtle sexism, compared to overt sexism, has a similar magnitude in impacting workplace outcomes. Additionally, teams are ubiquitous in organizations with the increase in complex taskwork, requiring a set of individuals to collaborate and produce outcomes greater than each individual effort. Accordingly, teamwork requires close, interdependent relationships for optimal performance. The purpose of this study was to assess a prevalent …

Dechlorination Of Waste Pvc (Polyvinyl Chloride) Using Hydrothermal Liquefaction Method, Vahab Ghalandari

Theses and Dissertations

In 2019, waste plastic production in the United States (U.S.) amounted to approximately 73 million metric tons. Projections indicate that by 2030, the generation of waste plastic in the U.S. will increase to nearly 90 million metric tons, and by 2060, it is expected to surpass 140 million metric tons. One prominent type of waste plastic is polyvinyl chloride (PVC), characterized by its high chlorine content, making it a halogenated plastic. This dissertation presents a comprehensive investigation of the dechlorination of waste PVC (WPVC) through various hydrothermal liquefaction (HTL) methods to produce environmentally friendly solid and liquid products. In this …