Digital Commons Network^™

Exploring The Impact Of The Achievement Gap On Shame And Resilience In African American College Students, Brittany R. Thomas

Electronic Theses and Dissertations

The achievement gap refers to the stark difference that occurs between racial or gender groups, as one group performs significantly higher than the other. An achievement gap has the propensity to produce psychological distress, as well as buffering techniques that are necessary for survival and success. Growing research shows that African American college students experience unique levels of trauma, shame, hardship, macro, and micro-aggressions, suggesting that these students learn to self-preserve as early as 10 years old. This study used a Pearson correlation, Independent T-Test, and a Moderated Multiple Regression to explore the impact of the achievement gap on shame …

School Choice Considerations Of Black Parents Of Students With Dis/Abilities, Jaleah Robinson

Electronic Theses and Dissertations

Forty-four states and Washington, D.C. have passed legislation to expand school choice options for students and families (Cardine, 2019). In addition to a student’s assigned neighborhood school, one may enact choice by way of tax credits, charter schools, vouchers, relocation, and through other means, depending on where one lives. The act of choosing a school has been simplified by some to economic principles of competition and consumer satisfaction. What research has shown, however, is enacting school choice is much more complex and commonly intertwined with concepts of race, class, and ability (Ellison & Aloe, 2019). Academic quality (Mavrogordato & Stein, …

Development Of A Microfluidic Viscoelastic Hemostatic Assay For Real-Timeviscosity Measurements Of Blood, Shay Kent

Electronic Theses and Dissertations

Blood coagulation disorders are malfunctions in the body’s ability to control blood clotting. It can result in either insufficient clotting causing an increased risk of bleeding or excessive clotting obstructing blood flow. The rapid and accurate diagnosis of coagulopathies is an important, unmet need in the clinical setting. Rapidly identifying the source of bleeding, either acquired or inherited, is critical to reduce the risk of major blood loss and deliver personalized hemostatic therapies. Viscoelastic hemostatic assays, or VHAs, deliver an effective solution to the diagnosis of coagulopathies by evaluating global hemostatic function using whole blood rather than plasma. VHAs are …

Development Of A Combined Feedforward-Feedback Quality Control System For Extended-Release Granules Using A Quality By Design Approach, Yuxiang Zhao

Electronic Theses and Dissertations

Objectives

For a fluid bed film coating process to consistently deliver quality products, its control system needs to be robust against the variability of input materials and environmental disturbances. Presently, limited studies have been reported to understand the effects and interactions of the material attributes, environmental variables, and process parameters on the product in vitro drug dissolution. A control system can be developed with a proper understanding of the coating process, by adjusting the process parameters in feedback and feedforward manners to compensate for the undesired effect caused by disturbances, and ensure consistent product quality.

Methods

The control system was …

Development Of Standard Operating Procedure With Modified Method To Quantify Benzene And Other Volatile Organic Compounds In Air Samples Using Gas Chromatography, Heather Hall

Electronic Theses and Dissertations

Stephen F. Austin State University (SFASU) Department of Environmental Science has recently invested in a gas chromatograph which can be used to analyze air samples for volatile organic compounds (VOCs) such as benzene, toluene, ethylbenzene, and xylenes (BTEX). The goal of this project was to develop a standard operating procedure (SOP) and modify the current method for the detection of VOCs associated with oil and gas drilling activity to accommodate the equipment and capabilities of SFASU Environmental Assessment Lab. This study aims to provide the framework for future research in air quality monitoring in the Eagle Ford Shale area. An …

Signal Fingerprinting And Machine Learning Framework For Uav Detection And Identification., Olusiji Oloruntobi Medaiyese

Electronic Theses and Dissertations

Advancement in technology has led to creative and innovative inventions. One such invention includes unmanned aerial vehicles (UAVs). UAVs (also known as drones) are now an intrinsic part of our society because their application is becoming ubiquitous in every industry ranging from transportation and logistics to environmental monitoring among others. With the numerous benign applications of UAVs, their emergence has added a new dimension to privacy and security issues. There are little or no strict regulations on the people that can purchase or own a UAV. For this reason, nefarious actors can take advantage of these aircraft to intrude into …

A Phenomenological Study Of The Perceptions Of Co-Teaching Through The Lens Of Special Education And General Education Teachers., Erin Seale

Electronic Theses and Dissertations

Co-teaching has become one of the most popular service-delivery models that school districts use to incorporate students with disabilities in the general education settings. This phenomenological study reports how special education teachers and general education teachers at one Central Kentucky high school describes their perceptions and experiences with co-teaching. This study uses semi-structured interview to explore general education and special education teachers’ perceptions of their experiences with co-teaching and being a part of a co-teaching team.

Wetting And Drying Dynamics For Tio2 With Pbs Quantum Dots., Kelly M. Lee

Electronic Theses and Dissertations

Initial solar cells utilized silicon and alloys for their economic viability. Photoelectrochemical photovoltaic cells were discovered with technological advancement which increased solar efficiency and further improved economic feasibility leading to quantum dot sensitized solar cells. Lead sulfide quantum dots and titanium dioxide were studied for wetting and drying effects. Zeta potential, pH values, SEM, and optical microscopes quantified or observed the colloidal suspension and dried sample behavior. Combined mixtures of lead sulfide and titania were dried at 3.6 pH and 12.56 pH values. This due to the observed zeta potential isoelectric point of titania, and behavior showed increased stability occurring …

The Study Of Copper Corrosion Mechanisms Using Electrochemical Experimental Techniques., Evan Grimm

Electronic Theses and Dissertations

The purpose of this study was to discover and thoroughly explain the corrosion mechanisms of copper in saltwater, tap water and deionized water, and to apply these methods and findings when testing the corrosion mechanisms of other materials. The experimental procedure consisted of measuring the open circuit potential, electrochemical impedance spectroscopy, linear sweep voltammetry, and Tafel analysis.

The copper was found to corrode at a greater rate in saltwater, followed by tap water then deionized water, with a larger difference between saltwater and tap water than between tap water and deionized water. Each reaction was found to be both kinetically …

An Examination Of Female Officers’ Career Advancement In The U.S. Military, Glenda A. Gill

Electronic Theses and Dissertations

There is little research about the gender-related barriers female military officers face when working to advance in the ranks even though there continues to be research about gender bias and discrimination when pursuing leadership and management positions. The purpose of this qualitative phenomenological study was to examine the experiences of veteran female officers who advanced in rank in the U.S. military. Secondarily, the purpose was to: (a) determine if women experienced role congruity barriers, while advancing in rank and (b) determine if women experienced role congruity when they attempted to advance in rank to elite-level leadership positions. In this study, …

The Use Of Medical Marijuana For The Relief Of Chronic Pain, Jacquelyn M. Paylor

Electronic Theses and Dissertations

Abstract For thousands of years, medical cannabis has been used for relief of chronic pain and personal ailments. It changes users’ mental capacities and perceptions while treating and providing relief from pain and muscle spasms. As a recreational and spiritual substance, this Schedule I drug requires special consideration and certification to administer. Increasing complaints of chronic pain have led doctors to prescribe opioids for pain relief. As prescriptions for opioids have increased, the number of opioid-related mortality and morbidity incidents have also risen. The high rates of opioid-related near deaths and overdoses have led policy makers, clinicians, pharmacists, and providers …

Blitzkrieg: The Evolution Of Modern Warfare And The Wehrmacht’S Impact On American Military Doctrine During The Cold War Era, Briggs Evans

Electronic Theses and Dissertations

The evolution of United States military doctrine was heavily influenced by the Wehrmacht and their early Blitzkrieg campaigns during World War II. This thesis traces the origins of this development and shows how the context of the Cold War led to a heavy influence by the Wehrmacht on American military doctrine. By analyzing studies conducted by the United States Army Historical Division from 1946-1961, I will show how these studies left a profound impact on American Military doctrine, particularly in the context of the Cold War. I will show the development of the Active Defense Doctrine and AirLand Battle during …

Active Travel For Children And Youth: Lessons From Active Routes To Schools North Carolina, Leah Ferguson

Electronic Theses and Dissertations

This Integrated Learning Experience (ILE) investigates literature regarding the impact of national Safe Routes to School (SRTS) programs and takes a deeper dive into the lessons that can be learned from North Carolina’s Active Routes to School (NC ARTS) programs through an analysis of data collected from 2007 to 2019. This report is focused on understanding the relationship between and among variables included in the Six Es of SRTS framework: Education, Engineering, Encouragement, Enforcement, Equity, and Evaluation. This investigation provides insight that extends understanding of parental comfort and engagement with these programs. A unique theoretical model was developed as were …

A Comparative Analysis Of Levels Of Importance, Satisfaction, And Engagement Among Adult Learners And Tennessee Reconnect Recipients At Two Community Colleges, Kelly A. Moore-Roberts

Electronic Theses and Dissertations

This primary goal of this study was to compare the levels of importance, satisfaction, and perceived engagement between adult learners and Tennessee Reconnect adult learners at two Tennessee community colleges. A two-group comparison research design using existing data from two survey instruments was used for this study. The data was analyzed using descriptive and inferential statistics based on the scales and subscales of the two surveys: Adult Learner Inventory (ALI) and Survey of Entering Student Engagement (SENSE). Because Tennessee Reconnect is a new program, very little literature has been conducted targeting this specific population. Therefore, this study attempted to add …

Performance Comparison Of Imputation Methods For Mixed Data Missing At Random With Small And Large Sample Data Set With Different Variability, Kyei Afari

Electronic Theses and Dissertations

One of the concerns in the field of statistics is the presence of missing data, which leads to bias in parameter estimation and inaccurate results. However, the multiple imputation procedure is a remedy for handling missing data. This study looked at the best multiple imputation methods used to handle mixed variable datasets with different sample sizes and variability along with different levels of missingness. The study employed the predictive mean matching, classification and regression trees, and the random forest imputation methods. For each dataset, the multiple regression parameter estimates for the complete datasets were compared to the multiple regression parameter …

Applying Deep Learning To The Ice Cream Vendor Problem: An Extension Of The Newsvendor Problem, Gaffar Solihu

Electronic Theses and Dissertations

The Newsvendor problem is a classical supply chain problem used to develop strategies for inventory optimization. The goal of the newsvendor problem is to predict the optimal order quantity of a product to meet an uncertain demand in the future, given that the demand distribution itself is known. The Ice Cream Vendor Problem extends the classical newsvendor problem to an uncertain demand with unknown distribution, albeit a distribution that is known to depend on exogenous features. The goal is thus to estimate the order quantity that minimizes the total cost when demand does not follow any known statistical distribution. The …

Using An Inventory Of Unstable Slopes To Prioritize Probabilistic Rockfall Modeling And Acid Base Accounting In Great Smoky Mountains National Park, Thomas A. O'Shea

Electronic Theses and Dissertations

An inventory of unstable slopes along transportation corridors and performance modeling are important components of geotechnical asset management in Great Smoky Mountains National Park (GRSM). Hazards and risk were assessed for 285 unstable slopes along 151 miles of roadway. A multi-criteria model was created to select fourteen sites for two-dimensional probabilistic rockfall simulations and Acid Base Accounting (ABA) tests. Simulations indicate that rock material would likely enter the roadway at all fourteen sites. ABA test results indicate that influence of significant acid-producing potential is generally confined to slaty rocks of the Anakeesta Formation and graphitic schist of the Wehutty Formation. …

Analysis And Risk Estimation Of High Priority Unstable Rock Slopes In Great Smoky Mountains National Park, Tennessee And North Carolina, Samantha Farmer

Electronic Theses and Dissertations

Great Smoky Mountains National Park (GRSM) received 12.5 million visitors in 2020. With a high traffic volume, it is imperative roadways remain open and free from obstruction. Annual unanticipated rockfall events in GRSM often obstruct traffic flow. Using the Unstable Slope Management Program for Federal Land Management Agencies (USMP for FLMA) protocols, this study analyzes high priority unstable rock slopes through 1) creation of an unstable slope geodatabase and 2) generation of a final rockfall risk model using Co-Kriging from a preliminary risk model and susceptibility model. A secondary goal of this study is to provide risk estimation for the …

Shared Decision-Making For Contraceptive Counseling Among Women Seeking Services At Safety Net Clinics In South Carolina And Alabama, Dumisa M. Nyarambi

Electronic Theses and Dissertations

Shared decision-making (SDM) for contraceptive counseling and method initiation is a hallmark of patient-centered care; SDM is associated with patient satisfaction, method continuation, and the prevention of pregnancy and short inter-pregnancy intervals. To achieve a high-quality experience for women Person-centered approach to counseling is the preferred approach to achieve SDM. Demographic factors and women’s perceptions of their providers have been linked to decision-making. Literature is lacking on SDM practices in safety net clinics, particularly in local health departments. Exploring these constructs is important to inform practices and policies for family planning. This research aimed to examine: 1) the influence of …

Perceptions Of Resilience-Informed Education In Postsecondary Instructors, Chelsea L. Robertson

Electronic Theses and Dissertations

Many studies have noted the detrimental impact adverse childhood experiences (ACEs) can have on individuals’ developmental trajectories and, as a result, the utilization of trauma-informed practices has been of increasing interest within the field of education. Most research on trauma-informed pedagogy is derived from samples of children in grades K-12, whereas research on trauma-informed teaching practices within higher education is comparatively scarce. The specific aims of the current investigation are two-fold. The first aim is to explore the effect of postsecondary instructors’ disciplinary specialization (i.e., person-thing orientation) on their receptivity to compassionate teaching practices. The second aim is to implement …

An Enhanced Framework To Compute Road User Costs Associated With Construction Zones, Jeremiah Adebiyi

Electronic Theses and Dissertations

The monetary quantification of inconveniences caused to the road users by ongoing construction activities is known as the Road Users Costs (RUCs). While the importance of RUCs is widely known, some highway agencies lack an appropriate methodology to compute RUCs. Thus, there is a need to develop a framework to compute RUCs that can be adopted quickly by highway agencies. This study reviewed existing literature and conducted a nationwide survey to identify and summarize the current practices of computing RUCs. It developed an enhanced framework and tool to compute RUCs that balances the effort required to calculate RUCs and the …

Neuroinflammation, Peripheral Inflammation And Gut Microbiome Profiles In Male Mice From Two Proposed Mouse Models Of Social Behavior Deficits, Sarah Parkinson

Electronic Theses and Dissertations

Autism spectrum disorder (ASD) is a neurodevelopmental disorder marked by social deficits and repetitive actions. A communication pathway exists between the brain and gut called the gut-brain axis. It is thought that gut bacteria can secrete signaling molecules, triggering inflammation across the body. These studies attempt to determine if markers are expressed in two mouse models of ASD behaviors, BTBR and a valproic acid model. Immunohistochemistry of ionized calcium binding adaptor molecule 1 from male mouse brain tissue showed no microglial activation in any group. Cytokine analysis did exhibit an increase in interleukin 1 (IL-1) in male adult mice only. …

The Impact Of Criminal Justice Involvement: Examining Experiences In A Housing First Program., Amanda N. Denton

Electronic Theses and Dissertations

Individuals who come into contact with the criminal justice system are more likely to experience housing instability and homelessness, which, in turn, increases the likelihood of subsequent criminal justice involvement. Due to a lack of federal funding, as well as disjointed and inconsistent policies regarding eligibility criteria, people with criminal records are unlikely to receive federal rental assistance. While the exclusion of people with criminal histories is presented as necessary to protect communities and residents from crime, improving access to stable housing may reduce recidivism, incarceration rates, and correctional costs and increase public safety. The present study examined the differences …

Rapid Annealing Of Perovskite Solar Cell Thin Film Materials Through Intense Pulse Light., Amir Hossein Ghahremani

Electronic Theses and Dissertations

Perovskite solar cells (PSCs) have garnered a great attention due to their rapid efficiency improvement using cheap and solution processable materials that can be adapted for scalable high-speed automated manufacturing. Thin film perovskite photovoltaics (PVs) are typically fabricated in an inert environment, such as nitrogen glovebox, through a set of deposition and annealing steps, each playing a significant role on the power conversion efficiency (PCE), reproducibility, and stability of devices. However, atmospheric processing of PSCs would achieve lucrative commercialization. Therefore, it is necessary to utilize materials and methods that enable successful fabrication of efficient PSCs in the ambient environment. The …

Community Structure And Dynamics Of Benthic Macroinvertebrates In A Recreated Headwater Stream System On A Valley Fill In A Retrofitted Watershed Located In The Appalachian Coalfields Of Southeastern Kentucky (U.S.A.), Steven W. Bailey

Electronic Theses and Dissertations

The extraction of coal from steep-gradient surface mining sites such as in the Appalachian Coalfields of the U.S. produces excess debris that is often placed in adjacent valleys resulting in the creation of valley fills. Not only are headwater streams buried in the process, but watershed functions are either destroyed outright, or become fragmented and disconnected from adjacent ecosystems resulting in adverse effects to downstream biological communities. In this dissertation, the dynamics of stream macroinvertebrate community structure, composition, diversity, and biotic integrity are assessed at a “proof of concept” stream system recreated on a retrofitted valley fill. For comparison, two …

Lightweight Mutual Authentication And Privacy Preservation Schemes For Iot Systems., Samah Mansour

Electronic Theses and Dissertations

Internet of Things (IoT) presents a holistic and transformative approach for providing services in different domains. IoT creates an atmosphere of interaction between humans and the surrounding physical world through various technologies such as sensors, actuators, and the cloud. Theoretically, when everything is connected, everything is at risk. The rapid growth of IoT with the heterogeneous devices that are connected to the Internet generates new challenges in protecting and preserving user’s privacy and ensuring the security of our lives. IoT systems face considerable challenges in deploying robust authentication protocols because some of the IoT devices are resource-constrained with limited computation …

An Analysis Of Loblolly Pine And Shortleaf Pine Hybridization Using Chromatography And Geographic Information Systems: A Case Study In East Texas, Gary White

Electronic Theses and Dissertations

East Texas forests contain three native pine species known to hybridize when site conditions are suitable. Due to increased gene flow from hybridization, quantifying hybridization spatially is a growing concern as southeastern United States pine forests are increasingly influenced by improved pine genetics and warmer, drier conditions from climate change. High Performance Liquid Chromatography (HPLC) and spatial interpolation using Inverse Distance Weighted were conducted using terpenes extracted from needles of shortleaf pine (Pinus echinata), loblolly pine (Pinus taeda), and putative hybrid individuals sampled in Atlanta State Park, Tyler State Park, and Mission Tejas State Park ( …

Economic And Sociological Factors Associate With First-Year African American Students' Enrollment In Historically Black Colleges And Universities., Vickie Gale Bridgeman

Electronic Theses and Dissertations

Despite the long struggle to gain access, African Americans always have valued education. Historically Black colleges and universities (HBCUs) were established to educate Blacks. The racial integration of predominately White institutions (non-HBCUs) in the 1960s led to decreased enrollments in HBCUs and challenged their relevance. The purpose of this study is to discover what factors influence African American students to choose an HBCU today. Quantitative, secondary survey data methods were used to conduct the study. African American students at HBCUs and non-HBCUs participated in the survey. Consistent with generally accepted approaches in analyzing student college choice, this study utilized logistic …

Develop A Multi-Functional Green Pervious Concrete (Mgpc) Pavement With Polycyclic Aromatic Hydrocarbons (Pahs) Removal Function., Hong Shang

Electronic Theses and Dissertations

Stormwater runoff induced Polycyclic Aromatic Hydrocarbons (PAHs) contaminant increasingly imperils the groundwater quality and the sustainable development of human society due to the potential carcinogenic risks. Pavement can be considered as the first line of defense for contaminant removal of the stormwater runoff. New construction materials with stormwater runoff quantity and quality control are in urgent demand for updating the existing pavement system. An innovative material called Multi-functional Green Pervious Concrete (MGPC) was developed in the department of Civil and Environmental Engineering at University of Louisville. This material uses organoclay as the amendment to enhance the PAHs removal capacity of …

Bilateral Ground Reaction Force Jumping Asymmetry And Performance, Keith Painter

Electronic Theses and Dissertations

The prevalence of asymmetry in performance research has increased in recent years with mixed results. Much of the performance research has focused on unilateral jumping activities attempting to show relationships to other performance variables. However, bilateral ground reaction forces (bGRF) from jumps are more frequently assessed in athlete monitoring programs and the asymmetry from those jumps could be a simple addition to data already being collected. Research into bGRF asymmetries is lacking and no studies have addressed longitudinal changes. Additionally, research into the relationship of asymmetries to performance have infrequently used athletes. For these reasons, this dissertation will focus on …