Digital Commons Network^™

Development Of Novel Mass Spectrometry Method For The Analysis Of Complex Compounds, Jing Wang

Graduate Theses, Dissertations, and Problem Reports (ETD)

As mass spectrometry methods continue to advance, there is a growing need for innovative interfaces that can seamlessly integrate sample pretreatment, separation, and ionization, allowing for direct mass analysis while maintaining a simple and flexible system. The evolution of ambient ionization techniques has made it feasible to nebulize analyte compounds at ambient pressure. Moreover, single-cell proteomics using mass spectrometry is gaining increasing attention, necessitating the development of precise sample preparation techniques to enhance sensitivity. In this dissertation, I demonstrate the novel mass spectrometry system to couple the sample pretreatment with the direct mass spectrometry detection for the analysis of diverse …

Deadly Divisions: Class And Stigma As Fundamental Social Causes Of Spatial Health Inequalities, Misty Lee Harris

Graduate Theses, Dissertations, and Problem Reports (ETD)

The objective of this dissertation is to investigate how class and stigma influence spatial inequalities in health across the US, from the structural to the individual level. Class, stigma, and subsequent access to capital resources are not equally distributed across the US. Women, poor, and minority populations continue to have unequal access to capital resources across the country, though this is spatially determined. Similarly, while there are health inequalities along the same social cleavages at the national level, they differ significantly across localities. Research has not paid enough attention to the fundamental social causes of inequities, resulting in the inability …

Evaluating Innovative Methods Of Quantitatively Linking Microbial Community Structure To Ecosystem Function, Jeth Gv Walkup

Graduate Theses, Dissertations, and Problem Reports (ETD)

Microbial functional diversity is the product of community structure and intraspecific trait variation. Due to microbial diversity and limited availability of microbial trait measurements, it has been challenging to quantitatively link community structure to microbial function. Although community-level activity rates vary with community composition, issues in the scale of their measurement inhibit our understanding of their relationship. Quantitative stable isotope probing (qSIP) is a method for quantitatively measuring taxon-specific microbial traits, providing new opportunities to apply trait-based approaches for studying microbial ecology. Quantitative microbial trait data from these experiments enables the functional characterization of microbial communities, potentially enabling the extrapolation …

Cluster Homolog Of Immunoglobulin-Like Receptor Genes In Chicken Immune Responses, Brandi A. Sparling

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation explores the identity and role of immunoglobulin-like (Ig-like) receptors in chickens, with focus on their implications in disease and disease progression. These receptors, wisely expressed across immune cells, interact with the major histocompatibility complex (MHC) class I molecules to modulate immune responses in mammals. Due to the insufficient representation of chicken Ig-like receptors in online databases, this study systematically annotates the chicken Cluster Homolog of Immunoglobulin-like Receptors (CHIR) genes using advanced bioinformatic techniques, aligning with the release of the 7th edition of the chicken genome assembly that comprises builds for a broiler and layer chicken. The analysis identifies …

Spatial Analysis Of Bike-Sharing Station Usage And Placement: Redefining Bike-Share Planning For Equity, Sydney E. French

Graduate Theses, Dissertations, and Problem Reports (ETD)

Historically, bike share system (BSS) station locations have been guided by potential economic and environmental benefits associated with increased bike share usage per station. For example, a typical location identification approach may attempt to maximize demand per station based on population size or activity and area characteristics. Such identification methods often result in an unequal representation of specific population groups among the systems’ users, thus hindering the potential sustainability-related benefits. To address these disparities, some bike share organizations have started developing and implementing equity-oriented programs focusing on expanding their reach to underserved communities. Nevertheless, the effectiveness of such programs has …

Detection And Observed Correlations Of Statin And Beta-Blocking Pharmaceuticals In West Virginia Surface Waters And Ichthyofauna, Joseph W. Kingsbury

Graduate Theses, Dissertations, and Problem Reports (ETD)

Within this thesis the source, presence, and the estimated ecotoxicological effects of cardiovascular medicines, specifically statins and beta-blockers are described within the Buckhannon, Tygart Valley, and West Fork Rivers of West Virginia. Included within this thesis is a general introduction providing key background information and relevant research related to the source, presence, and known toxicity of statins and beta-blockers. Following the general introduction there are 3 distinct chapters. Chapter 1 focuses on the estimated demographic based source loadings and the surface water concentration characteristics of statins and beta-blockers within the three rivers. Chapter 2 investigates the effects of statins and …

Krill Protein Fortified Extrudates: A Pilot Study, Avery S. Fleeharty

Graduate Theses, Dissertations, and Problem Reports (ETD)

Antarctic krill (Euphausiacea superba) is an abundant and sustainable but underutilized natural resource with well-studied protein isolation methodology using Isoelectric solubilization-precipitation (ISP). The resulting krill protein isolate (KPI) has high yield and sufficient impurity removal in addition to desirable nutritional and functional properties but has yet to be used in food systems. Extrusion is a versatile and scalable food processing method with many benefits; thus, the aim of this study was to determine the impact of KPI as an additive in extrusion processing with the eventual goal of introducing it to human and animal food systems. KPI was …

Synthetic Well Log Generation Software, Daniel E. Keller

Graduate Theses, Dissertations, and Problem Reports (ETD)

In this study, we developed a novel approach to generate synthetic well logs using backpropagation neural networks through the use of an open source software development tool. Our method predicts essential well logs such as neutron porosity, sonic, photoelectric, and resistivity, which are crucial in various stages of oil and gas exploration and development, as they help determine reservoir characteristics. Our approach involves sequentially predicting well logs, using the outputs of one prediction model as inputs for subsequent models to generate comprehensive and coherent sets of well logs. We trained and tested our models using 16 wells from a single …

A Numerical Investigation Of A Spark Ignition Opposed Piston Linear Engine Fueled By Hydrogen, Mustapha Alao Animashaun

Graduate Theses, Dissertations, and Problem Reports (ETD)

The traditional Slider-Crank Engine, also known as the Internal Combustion Engine (ICE), has been criticized for its complex structure, friction loss, low efficiency and high maintenance cost. In contrast, the Free-Piston Linear Engine (FPLE) reduces this friction due to its simpler design. With rising concerns about air quality and stricter regulations, there's a renewed interest in hydrogen as a carbon-free fuel for ICEs.

The Opposed Piston Linear Generator (OPLG) system is an integrated arrangement of parts operating harmoniously to generate power efficiently. By leveraging synchronized pistons, accurate fuel distribution, and seamless thermodynamic cycles, it transforms kinetic energy into electrical energy. …

Comparing Activity-Based Market Segments On The George Washington And Jefferson National Forests Before And During The Covid-19 Pandemic, Eric Eugene Snyder

Graduate Theses, Dissertations, and Problem Reports (ETD)

Understanding market segments in forest-based tourism and their dynamics is integral for the tourism industry's ability to adapt and thrive in the ever-evolving market. The purpose of this research is to determine how recreation participation changed over a five-year period in the George Washington and Jefferson National Forests before and during the COVID-19 global pandemic. Data were collected via the National Visitor Use Monitoring (NVUM) surveys in fiscal years 2016 and 2021. NVUM surveys are on-site exit interview surveys that produce descriptive information about forest visitors. NVUM utilizes a stratified random sampling methodology that captures data across different use levels, …

Adventures In Flute Playing: A Literature Survey And Anticipated Beginning Flute Method, Sammy Holloman

Graduate Theses, Dissertations, and Problem Reports (ETD)

This Literature Survey will investigate 10 method books used by beginning flute students, aged 6-13, in the United States. In this survey, books will be analyzed to identify which musical concepts are covered and their overall methodical approach. Comprehensive graphs are offered in the Appendix to provide readers brief contextual information on the books analyzed.

The results from this survey have influenced the creation of my beginning flute method, Adventures in Flute Playing, which incorporates exercises that are less commonly found in the method books being used today. Adventures in Flute Playing will consist of a series of online videos …

Methods For Analyzing Physics Student Retention And Physics Curricula, John Darrell Hansen

Graduate Theses, Dissertations, and Problem Reports (ETD)

Retention of students in college has been a concern of academic institutions for many years. In the last two decades, the focus on student retention in STEM fields has intensified. The current graduation rate of students in science, technology, engineering and mathematics (STEM) fields is well below that required to fill the projected need of STEM professionals. The work presented in this dissertation investigates the problem of student retention in physics programs. Four studies were performed. The first identifies the relationships between student retention and pre-college and early-college academic factors at an eastern U.S. university using logistic regression and Bayesian …

Development And Validation Of Improved Live Load Distribution Factors For Moment In Press-Brake-Formed Steel Tub Girder Bridges, Brook Teklu Woldegabriel

Graduate Theses, Dissertations, and Problem Reports (ETD)

Press-brake-formed tub girders (PBFTGs) offer innovative solutions for short-span steel bridge applications, possessing efficiency, versatility, and sustainability. These girders are galvanized shallow trapezoidal boxes fabricated from cold-bent structural steel plates. Depending on the design requirements, a concrete deck or other deck options, such as a steel sandwich plate system, can be placed on the girders. The Short Span Steel Bridge Alliance (SSSBA) extensively researched the steel PBFTG bridge system. As a testament to its potential, the AASHTO Innovation Initiative (AII) recognized it as a 2021 Focus Technology. AII has shown commitment to promoting the adoption of PBFTG among its member …

Relationships Between Geochemistry, Carbon Content, And Grain Size In Clastic Cave Sediments, Rebekah Rose Nicholas

Graduate Theses, Dissertations, and Problem Reports (ETD)

Understanding geochemical and physical properties of cave sediment gives insight to sediment characterization and carbon storage in the cave system. Previous work on clastic sediments largely encompasses physical properties, neglecting the importance of geochemical parameters on sediment deposition.

This study reports physical and chemical properties of sediment cores from three caves: two caves in Puerto Rico and one cave in Virginia. A total of 25 cores were used in this study; 6 of these cores were new and collected in 2022 from Butler Cave (BTC) in Virginia to focus on the effects of water level. Core samples were analyzed for …

Parent And Adolescent Report Of Helicopter Parenting: Examining Reporter Discrepancies And Associations With Adolescent Depression And Anxiety, Avneet Batra

Graduate Theses, Dissertations, and Problem Reports (ETD)

Research is replete with studies on Helicopter Parenting (HP) and its association with depression and anxiety (Cui et al., 2019; Schiffrin et al., 2014; 2019). However, most of the studies have focused on college students’ reports on helicopter parenting and there is relative dearth of studies with adolescents or with parents’ reports of HP (Pistella et al., 2020; Schiffrin et al., 2019). The current study aims to fill the gap in the literature by including both parent and adolescents’ perspectives on helicopter parenting, assess its unique association (parent and teens HP reports) with teen depression and anxiety both concurrently and …

Composers At War: A Study Of Composers Who Fought In World War I And World War Ii, Jason T. Hoffmann

Graduate Theses, Dissertations, and Problem Reports (ETD)

This research document explores the connections between the war experiences of four composers and whether the possibility existed that any of the composers had posttraumatic stress disorder (PTSD), moral injury, mild traumatic brain injuries (mTBI), traumatic brain injury (TBI) or chronic traumatic encephalopathy (CTE). Scholars have not thoroughly examined the music of composers written before, during, and after war experiences and any potential changes to musical styles or compositional techniques. In my research I look at the effects that war can have on composers through autobiographical and biographical accounts of Ivor Gurney (WWI), Olivier Messiaen (WWII), Maurice Ravel (WWI), and …

Spiking Neural Network That Maps From Generalized Coordinates To Cartesian Coordinates, Chloe K. Guie

Graduate Theses, Dissertations, and Problem Reports (ETD)

In this thesis, I look to understand how insects compute task-level quantities by integrating range-fractionated sensory signals to create a sparse-spatial coding of Cartesian positions. I created biologically plausible 2-D and 3-D models of one species of the stick insect (Carausius morosus) leg and encoded the foot position through a spiking neural network. This model used spiking afferents from three angles of an insect leg which are integrated by one non-spiking interneuron. This model contains many dendritic compartments and one somatic compartment that encode the foot’s position relative to the body. The Functional Subnetwork Approach (FSA) was used …

Manganese-Based A-Site High-Entropy Perovskite Oxides For Solar Thermochemical Hydrogen Production, Cijie Liu

Graduate Theses, Dissertations, and Problem Reports (ETD)

Non-stoichiometric perovskite oxides have been studied as a new family of redox oxides for solar thermochemical hydrogen (STCH) production owing to their favourable thermodynamic properties. However, conventional perovskite oxides suffer from limited phase stability and kinetic properties, and poor cyclability. Here, we report a strategy of introducing A-site multi-principal-component mixing to develop a high-entropy perovskite oxide, (La_1/6Pr_1/6Nd_1/6Gd_1/6Sr_1/6Ba_1/6)MnO₃ (LPNGSB_Mn), which shows desirable thermodynamic and kinetics properties as well as excellent phase stability and cycling durability. LPNGSB_Mn exhibits enhanced hydrogen production (~77.5 mmol moloxide^–1) compared to (La …

Exploiting The Advantages And Overcoming The Challenges Of The Cable In A Tethered Drone System, Rogerio Rodrigues Lima

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation proposes solutions for motion planning, localization, and landing of tethered drones using only tether variables. A tether-based multi-model localization framework for tethered drones is proposed. This framework comprises three independent localization strategies based on a different model. The first strategy uses simple trigonometric relations assuming that the tether is taut; the second method relies on a set of catenary equations for the slack tether case; the third estimator is a neural network-based predictor that can cover different tether shapes. Multi-layer perceptron networks previously trained with a dataset comprised of the tether variables (i.e., length, tether angles on the …

Exploring The Conceptualizations And Utilizations Of Learning Theories In Sport Settings, Kevin R. Lou

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to identify how integrating learning theories into the design of a formal university course helps facilitate students’ resources, goals, and orientations (Schoenfeld, 2011) of learning theories for their future career work in coaching, sport psychology consulting, or other sport-related professions. Sixteen students signed up for a fifteen-week fall semester course at a Mid-Atlantic university in America and were asked to annotate, create, and reflect upon examples of future work in their desired fields for their three major written assignments in the course. Students reflected on their learning experience through pre-and-post semi-structured interviews and most …

Spatio-Temporal Deep Learning Approaches For Addressing Track Association Problem Using Automatic Identification System (Ais) Data, Md Asif Bin Syed

Graduate Theses, Dissertations, and Problem Reports (ETD)

In the realm of marine surveillance, track association constitutes a pivotal yet challenging task, involving the identification and tracking of unlabelled vessel trajectories. The need for accurate data association algorithms stems from the urge to spot unusual vessel movements or threat detection. These algorithms link sequential observations containing location and motion information to specific moving objects, helping to build their real-time trajectories. These threat detection algorithms will be useful when a vessel attempts to conceal its identity. The algorithm can then identify and track the specific vessel from its incoming signal. The data for this study is sourced from the …

Evaluation Of A Novel Mrna-Pertussis Vaccine Against Emerging Clinical Isolates Of Bordetella Pertussis, Graham Jeffrey Bitzer

Graduate Theses, Dissertations, and Problem Reports (ETD)

Bordetella pertussis is a Gram-negative obligate aerobe that causes a respiratory disease known as pertussis or whooping cough. Pertussis is most severe in younger children, especially infants but the bacteria has been known to colonize adult populations. Before the introduction of the whole-cell pertussis (wP; wP-DTP) vaccine reported numbers of pertussis cases within the US routinely topped 100,000 cases per year. However, with the widespread usage of the wP vaccine case numbers began dropping and reached a low of less than 5,000 cases per year in the late 1970’s and early 80’s. It appeared that B. pertussis was heading towards …

Implementing Test Automation With Selenium Webdriver, Ramana Inturi

Graduate Theses, Dissertations, and Problem Reports (ETD)

Many software programs, such as applications for designing, modeling, simulating, and analyzing systems, are now commonly available as web-based applications. The testing of such sophisticated web applications is highly challenging and can be extremely tedious and error-prone if done manually. Recently automation tools have become increasingly used for testing web-based applications, as they minimize human involvement and repetitive work.

For this problem report project, we have built and implemented an automation testing framework for web applications. The project specifically uses a tool called Selenium WebDriver, which has been used to develop the testing framework. By using this framework, testers may …

Improving The Health And Safety Of Manufacturing Workers By Detecting And Addressing Personal Protective Equipment (Ppe) Violations In Real-Time With The Use Of Automated Ppe Detection Technology, Joseph Olufemi Fasinu

Graduate Theses, Dissertations, and Problem Reports (ETD)

The Centers for Disease Control and Prevention (CDC) emphasized that Personal Protective Equipment (PPE) can significantly reduce the risk of occupational injuries and illnesses. However, improper use, failure to use, and other PPE-related violations can still result in injuries and fatalities. Eye and face protection violation has been one of the top 10 most frequently violated OSHA standards in fiscal years 2018, 2019, 2020, 2021 and 2022 consecutively. A common practice among safety professionals to ensure PPE compliance has been to physically inspect or monitor PPE usage among workers, which has been found to be unsustainable on a continuous real-time …

Single Field Of View Calibration Through Estimating Three Mutually Orthogonal Vanishing Points For Spatial Data Collection In Traffic Scenes, Sourav Dutta

Graduate Theses, Dissertations, and Problem Reports (ETD)

Accurately extracting the three mutually orthogonal vanishing points plays a vital role in the field of view calibration for many surveillance-based traffic applications. However, the paucity of parallel lines along the dominant directions in many traffic scenes engenders the inapplicability of the current methods for a successful calibration. This research proposed a novel vanishing point estimating method for traffic scenes. This method capitalizes on both the road scene and moving vehicles for the determination of the dominant directions of the real-world coordinate frame. It also exploits distinctive edgelets for the direct identification of vanishing point candidates. Both lab and field …

Career Progression And Experiences Of Late Career Women Strength And Conditioning Coaches, Marla Df Gladstone

Graduate Theses, Dissertations, and Problem Reports (ETD)

Women in strength and conditioning roles at the NCAA Division I level account for approximately 16% of the S&C coaching professionals (NCAA, 2022). Between 2000 and 2022, only six studies have examined the population of female strength and conditioning coaches (SCC). The aim of this project was to understand the challenges women SCC have experienced reaching, entering, and sustaining to late career. Another goal was to learn how women SCC navigated through the barriers within the coaching profession. Due to the construction of gender in organizations, role congruity theory has been used to analyze the experiences of women in sport …

Social Determinants Of Health And Functional Disability At Mid- And Late-Life, Carly Pullen

Graduate Theses, Dissertations, and Problem Reports (ETD)

The number and proportion of older adults living in the U.S. and globally are increasing. Not only are more adults living longer (Rania et al., 2021), there is evidence that people are

entering late life with more functional disability than in previous generations (He & Larsen,

2014). Social determinants of health include demographic and environmental influences than can impact a range of health outcomes beyond more direct risk factors (Duran and Perez-Stable, 2019). Using data from 243,693 community-dwelling adults who completed the 2020 Behavioral Risk Factor Surveillance System survey, we tested the associations among social determinants of health (i.e., age, …

Physical Activity Promotion, Assessment, And Engagement In Clinical Settings In The United States, Kristin A. Grogg

Graduate Theses, Dissertations, and Problem Reports (ETD)

Physical inactivity is an important contributor to morbidity and all-cause mortality and the 2018 Physical Activity Guidelines Advisory Committee recommended that physicians increase their role in physical activity assessment and promotion to combat physical inactivity and related comorbidities. Healthcare providers are increasingly called upon to initiate physical activity promotion with their patients to manage conditions like obesity, diabetes, and cardiovascular diseases. Still, recent reports indicate that less than half of primary care visits include some type of physical activity promotion. Although the National Physical Activity Plan includes some recommendations for clinicians and the healthcare sector on physical activity promotion, it …