Digital Commons Network^™

Dynamic Modelling And Control Of Grid-Level Energy Storage Systems, Sai Pushpitha Vudata

Graduate Theses, Dissertations, and Problem Reports (ETD)

The focus of this work is on two energy storage technologies, namely pumped storage hydroelectricity (PHS) and secondary batteries. Under secondary battery technologies, two potential technologies for grid-scale storage, namely high-temperature sodium-sulfur (NaS) battery and vanadium redox flow battery (VRFB), are investigated. PHS is a largescale (>100 MW) technology that stores and generates energy by transporting water between two reservoirs at different elevations. The goal is to develop a detailed dynamic model of PHS and then design the controllers to follow the desired load trajectory accurately with high efficiency. The NaS battery and VRFB are advanced secondary batteries which …

Analysis Of Cell Signaling Perturbations In Response To Chronic Localized Infections, Amber Nicole Prince

Graduate Theses, Dissertations, and Problem Reports (ETD)

The tissue-level response to pathogens involves an intricate series of signal transduction events, influenced by immune and healing mediators that alert the host to danger and eliminate the infection. Disruptions to normal signaling events can compromise the host’s ability to respond and lead to the development of chronic infections that cannot be resolved without clinical intervention. Prolonged inflammation due to chronic infection can damage tissues and compromise healing processes, thus, the interactions of immune and healing mediators in signaling cascades are intimately linked to tissue health outcomes. Studying signaling networks relevant to these responses provided a more thorough understanding of …

Kindergarten Entry Assessment Practices In Pennsylvania, Anne Katona Linn Ed.D.

Graduate Theses, Dissertations, and Problem Reports (ETD)

In the Commonwealth of Pennsylvania, there is significant variation in kindergarten programs and the entry assessment systems used in school districts. There are no reliable data on the kindergarten entry assessment (KEA) systems used in public kindergarten programs across the Commonwealth. It is well-established that comprehensive KEAs should be part of a broader preschool through third grade (P-3) continuum of early childhood education to assess whole-child skills, include families and community partners, be culturally and linguistically responsive, and developmentally appropriate. This study aimed to understand the KEA practices of kindergarten teachers in Pennsylvania. An online survey was distributed to kindergarten …

Exposure Therapy: Stimulus Intensity As A Factor In Treatment Preference, Matthew C. Arias

Graduate Theses, Dissertations, and Problem Reports (ETD)

Currently, a host of treatments are available for treating anxiety disorders, including specific phobia. Treatment of specific phobia includes pharmacological, psychosocial, and combined approaches. Exposure therapy, however, is considered the leading psychological treatment for specific phobia, and has shown to be effective. Exposure therapy challenges held beliefs about feared stimuli/situations and attempts to integrate new learning about the feared object/situation. Despite exposure being effective to treat specific phobia, it is associated with low adherence and high dropout rates. There is a need to examine, therefore, ways to improve patient adherence for exposure. A way to examine this issue is to …

Correctional Officer Opinions About Offenders With Mental Illness: The Relationships Among Opinions, Burnout, Emotional Intelligence, And Mental Health Training, Courtney Hull

Graduate Theses, Dissertations, and Problem Reports (ETD)

Rates of mental illness among incarcerated individuals in the United States are high and have been well documented. Correctional officers are on the front line of identifying symptoms and alerting mental health professionals to problems as they arise. Correctional officers often lack an understating of mental illness, feel ill-equipped to manage mental health crises, and experience high levels of job-related stress. The objective of this study was to better understand the relationship between correctional officers’ emotional intelligence and opinions about mental illness, and to identify if burnout moderated the relationship between the variables. Additionally, the study sought to understand the …

Population Genetics Of A Reintroduced Fisher (Pekania Pennanti) Population In West Virginia, Caroline E. Harms

Graduate Theses, Dissertations, and Problem Reports (ETD)

Fishers (Pekania pennanti) were reintroduced in West Virginia in 1969 with no population wide genetic analysis ever having been conducted. Genetic analysis of reintroduced populations is vital to assess genetic diversity as an indicative of population viability. My objective was to collect fisher samples throughout West Virginia, nearby states where fisher may be migrating (PA and NY), and the New Hampshire source population to provide a full genetic interpretation of the reintroduced West Virginia population. Genetic analysis was used to measure genetic diversity, admixture or delineation of subpopulations, and effective population size. Sample location and genetic data were …

Biomechanically Inspired Assistive Technology To Restore Movement Of The Upper Limbs After Stroke, Ariel Thomas

Graduate Theses, Dissertations, and Problem Reports (ETD)

A stroke often damages the neural structures responsible for movement. Stroke is a heterogeneous disease, affecting each survivor differently. There are common motor features of a stroke, but even these features vary across time as an individual proceeds through different stages of recovery. The different ways in which stroke motor impairment can present itself are often overlooked, but these differences are fundamental to the understanding of the disease and its recovery. When motor assessments are capable of acquiring information necessary to parse out a detailed profile of each stroke case, this will lead to an improved neuromechanical understanding of the …

Accuracy Of Implant Placement Utilizing Stereolithographic Guides Printed With And Without Cross-Arch Stabilization Struts, Caitlin Libby Dds

Graduate Theses, Dissertations, and Problem Reports (ETD)

Objectives: The purpose of this study was to assess the accuracy of implant placement using stereolithographic guides printed with and without stabilization struts by comparing the post-operative position to the planned implant position.

Methods: A pre-operative cone-beam computed tomography (CBCT) of a drillable maxillary model was obtained and data was uploaded into coDiagnostiX for preoperative planning. The implant position was planned in an edentulous space of #5 using a 3.3x10mm Bone Level Tapered (BLT) implant (Straumann). Ten surgical guides were designed utilizing a stabilization strut (Group A), while ten guides were designed without the stabilization strut (Group B). Twenty guides …

Gas Phase Reactions Of Cyclopentadiene With Ch And Oh Radicals, Kacee Lynn Caster

Graduate Theses, Dissertations, and Problem Reports (ETD)

The formation of polycyclic aromatic hydrocarbons (PAHs) and carbon-based nanoparticles in combustion environments is driven by the pyrolysis and oxidation of abundant fuel molecules. The subsequent growth of these pyrolytic byproducts is then propagated by reactions with small free radical species like OH, CH, O atoms, and C₂H. Cyclopentadiene (C₅H₆) is a significant five-member combustion intermediate that has been detected in many high temperature reactions, such as in the pyrolysis of jet fuels like JP-10. Experimental and theoretical investigations in the reactions of cyclopentadiene with these small free radical species are necessary towards understanding …

Putting Policy In Its Place: Policy Enactment And Engagement Through A Multiscalar Policy-Shed Framework, Barbara L. Maclennan

Graduate Theses, Dissertations, and Problem Reports (ETD)

The objective of this research is to examine the spatial components integral to policy formation, implementation, and evaluation. The research uses solid waste as a case study to explore a multiscalar GIS policy-shed framework. To this end, the goal of this dissertation is to examine the spatial nature of public policy. The research applies spatial concepts and multiscalar methodological applications embedded within GIS and geovisualization to explore the complex spaces surrounding public policy implementation and evaluation.

Various Operational Aspects Of The Extraction Of Critical Minerals From Acid Mine Drainage And Its Treatment By-Product, Zhongqing Xiao

Graduate Theses, Dissertations, and Problem Reports (ETD)

Acid mine drainage (AMD) is environmentally hazardous acidic water, which is continuously generated in large volumes at coal mining sites, typically when pyrite is exposed to oxygen and water. As its continuous migration under the geologic conditions, AMD tends to leach metal elements out from the surrounding minerals, leading to high concentrations of metal elements, like iron, aluminum, magnesium, manganese, lead, arsenic, as well as critical cobalt and rare earth elements (REEs). AMD must be treated and monitored to meet the effluent limits, under U.S.C §1251, the Clean Water act, before being discharged to receiving streams.

Recently, the research is …

Development Of Thermal Management Strategies Using Cylinder Deactivation For Low-Load Operation In Heavy-Duty Diesel Trucks, Christian M. Hushion

Graduate Theses, Dissertations, and Problem Reports (ETD)

Cylinder deactivation (CDA) has been used in gasoline engines, for decades, as a strategy for fuel consumption reduction. The idea of CDA in the heavy-duty diesel (HDD) engine sector has gained traction as a pathway to fuel efficient thermal management strategy. Oxides of nitrogen (NOx) control has been a major focus over the last decade and maintaining conducive aftertreatment temperatures is a major design aspect. HDD original equipment manufacturers (OEM) have developed a variety of thermal management strategies which almost all revolve around large fuel penalties. The goal of all of these strategies is for thermal management of the diesel …

Models And Solution Approaches For Integrated Student To School Assignment And School Bus Routing Problem Focusing On Special Needs Students, Azadeh Ansari

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation addresses the integrated problem of assigning students to schools and generating school bus routes particularly focusing on the special needs students is addressed. Special needs students generally require supplementary accommodations and must be picked up from and dropped off at their home addresses. This will increase the number of nodes in the network and therefore introduces additional complexities to the problems of assignment and routing for students. An integrated single objective mathematical model is first developed that simultaneously assigns the students to schools based on their needs and generates efficient bus routes to deliver the students to their …

Examining The Effects Of Background Noise On Contextualized Word Learning, Caitlin Alyssa Ross

Graduate Theses, Dissertations, and Problem Reports (ETD)

Despite redundancy in the acoustic speech signal, both children and adults demonstrate difficulty listening and learning in noise. Research has shown that the acoustic parameters of classrooms and common study places, such as libraries and coffee shops, are often exposing students daily to unhealthy levels of background noise and distraction as they attempt to access and retain new information. While younger children may encounter new words via deliberate instruction in a classroom setting, older students are more likely to access new vocabulary indirectly via reading or self-study in noisy environments often of their own choosing. In both scenarios, accurate perception …

Non-Monetary Economies: A Study On Different Governing Principles, Richard Perry Vest Ii

Graduate Theses, Dissertations, and Problem Reports (ETD)

This thesis examines a new economic system with a focus on non-monetary (primarily automation) aspects. Currency has been used in exchange for goods and services and this exchange has often resulted in benefits gained by any given individual. What if that wasn’t the case? How might society function if it was not influenced by currency? This thesis explores this hypothetical concept of an economy without currency with a focus given to automation. Using utility and production functions, discussion is given on how supply and demand functions behave in a non-monetary economy, how governing policy could be handled, and how society …

Sustainability Assessment Of Direct Energy Deposition (Ded) Based Hybrid Manufacturing Using Life Cycle Assessment (Lca) Method, Faujia Islam

Graduate Theses, Dissertations, and Problem Reports (ETD)

As sustainability has emerged as a highlight for almost every field over the last few decades, the manufacturing field is no exception. Generally, additive manufacturing performs better than traditional manufacturing in terms of sustainability because of its lean energy- and material usage. Previous studies have compared the sustainability performance between traditional and additive manufacturing, but hybrid manufacturing was not focused upon much. In this paper, the life cycle assessment method is used to analyze and compare the energy consumption and environmental impact of direct energy deposition (DED) based hybrid manufacturing and traditional manufacturing “CNC milling” process for a turbine blade. …

Harnessing Acoustic Streaming For Bioanalysis In Microfluidics, Xiaojun Li

Graduate Theses, Dissertations, and Problem Reports (ETD)

In the past few decades, microfluidic technology has been developed rapidly in both fabrication methods and multifunctionality integrations, making it a powerful tool for a wider variety of biological applications. The device fabrication method has expanded from conventional polymer-based micro devices to 3D-printed micro devices, and allows multiple functions such as electric, optic, magnetic and acoustic to be integrated on a single platform. This dissertation focuses on method development of acoustic streaming-based microfluidics in bioanalysis such as immunoassay, enzyme kinetics and DNA fragmentation analysis. In this dissertation, a micromixer was developed based on acoustic streaming generated from sharp-edge structure vibration …

Learning And Workers In Transition (Wit), Jeffrey Burgazzoli Jr

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study utilized autoethnography to generate new understandings about learning and workplace transitions. I journaled the first 90 days in a new job, writing about the notable learning events that occurred and collecting work artifacts to create a rich storyboard of the transition scene. Qualitative analysis of the storyboard revealed four broader dimensions of learning that must be considered: 1) knowledge growth and development, 2) cognition, 3) situational context, and 4) emotion. The results of the study illuminated key inflection points that happened during the transition process, conceptualized how my learning changed over time, and showed how I processed and …

A Survey Of Anthelmintic Resistance In Angus Bulls Participating In Centralized Performance Tests In Appalachia, Roger Tyler Rohrbaugh

Graduate Theses, Dissertations, and Problem Reports (ETD)

Resistance to anthelmintics, more commonly referred to as “de-wormers,” has been on the rise in parasites that affect cattle. Parasite infection can have severe impacts on calf productivity resulting in reduced profitability. Therefore, we sought to better understand anthelmintic resistance in Appalachia by surveying Angus bulls entering performance tests in VA and WV. During a four-year period, over 1050 Angus bulls were tested at bull development facilities in Wardensville, WV, Culpeper, VA and Wytheville, VA. Fecal samples were collected at arrival and 14-21 days later for determination of fecal egg count (FEC) reduction. Upon arrival, all bulls received either fenbendazole …

Transference Of Emotional Intelligence And Self-Efficacy Observed Through Adventure West Virginia Student Trip Leaders, Ashley Irene Fox

Graduate Theses, Dissertations, and Problem Reports (ETD)

Since the creation of university sponsored outdoor recreation trips, research studies have been conducted to examine the impact of this programming on participants. These studies have typically assessed impacts through measuring common components used to quantify overall leadership abilities such as emotional intelligence, self-efficacy, and transference. In this study, researchers utilized a quasi-experimental approach to attempt to measure the impact of leading outdoor orientation trips on leader ability to transfer leadership skills to other areas of life. A sample (N = 29) of undergraduate student trip leaders of West Virginia University’s Adventure West Virginia (AWV) program was surveyed and divided …

Enacting Sustainability In Footwear Product Development, Mary Samantha Hale

Graduate Theses, Dissertations, and Problem Reports (ETD)

The apparel and footwear industry's negative environmental impacts have companies facing scrutiny as consumer environmental consciousness increases (Brewer, 2019). Apparel and footwear companies are scrambling to develop sustainable initiatives with more consumers demanding they be held accountable for their actions. The industry has focused on recycling, raw materials sourcing, and reducing production waste during product development for more sustainable outcomes. This qualitative case study explores how sustainability as an abstract corporate initiative affects footwear companies and product development processes. The best way to explore how companies engage and execute sustainable practices in their product development process is by examining it …

Meeting The Mental Health Needs Of Student-Athletes: A Descriptive Study Of Practitioners And Their Perspectives, William C. Way Iii

Graduate Theses, Dissertations, and Problem Reports (ETD)

Efforts are being made to promote mental health awareness and destigmatize help-seeking behavior among student-athletes (e.g., Kern et al., 2017). The availability and visibility of practitioners with specialized training in sport psychology can facilitate these efforts (e.g., Flowers, 2007; Carr, 2007; McDuff et al., 2005). However, some student-athletes have observed that the clinical sport psychology (CSP) practitioners who are available to them are being stretched thin (Way et al., 2020). In the context of collegiate mental health more broadly, many campus counseling centers are struggling to meet the demand for clinical services (e.g., Kafka, 2019). Research on the experiences and …

Sustainability Key Performance Indicators For Mass Customization, Md Fahid Hasan Pulak

Graduate Theses, Dissertations, and Problem Reports (ETD)

Today’s manufacturers are striving towards a more sustainable and customized product offering in their value chain to satisfy customer demand and compete on the marketplace. By adopting sustainability practices, companies are not only complying with environmental regulations but are strategically addressing the triple bottom line (TBL) of sustainability (environmental, social, and economic). Similarly, mass customization allows a company to better satisfy their customers by creating individualized products economically. Moving forward, it is important to better understand the relationship of these two competitive strategies. In order to assess the sustainability performance of mass customization, it is important to understand the appropriate …

Effect Of Diet, Age, And Genetics On Rainbow Trout Growth And Fillet Quality, Bahareh Adami

Graduate Theses, Dissertations, and Problem Reports (ETD)

In this study, analyses were conducted to compare fillet quality attributes of 4 rainbow trout families (40, 102, 159, and 187) fed fish meal (FM) and a fishmeal free diet (FMF), to two age endpoints, 9 and 11 months.

Previous studies with rainbow trout have evaluated the effect of age, diet, and family on growth performance and fillet quality. However, a comprehensive analysis of variables is lacking for rainbow trout, one of the main aquatic foods for domestic and international consumers.

Separable muscle as a percent whole body weight was not affected by diet, family, age, and the interaction of …

When Face-To-Face Communication Fails: A Case Study Of Wvu Extension Agents Utilizing Innovative Social Media Practices, Madison Brooke Quinn

Graduate Theses, Dissertations, and Problem Reports (ETD)

An important aspect that contributes to the success of county Extension programs is relationships and collaborations with community members. This became a challenge when face-to-face communication was no longer possible as a response to the national pandemic that occurred due to COVID-19. In recent years, society has been increasing their reliability on social networking for communication (Diem et al., 2011). Social media played a central role in the diffusion of information in a variety of organizations and businesses during COVID-19 (Geol et al., 2020). The purpose of this study was to describe how WVU Extension Service is utilizing innovative social …

Accuracy Of Digital Impressions At Varying Implant Depths: An In-Vitro Study, Vivia Sequeira

Graduate Theses, Dissertations, and Problem Reports (ETD)

Introduction: Implants placed at variable depths may vary the amount of visible scannable surface of a scan body. Intraoral scanner technology uses advanced optical principles to record the surface of the scan body to accurately capture the implant position.

Purpose: To investigate the effect implant placement depth has on the accuracy of digital implant impressions using an intraoral scanner.

Materials & Methods: A partially edentulous gypsum master model was fabricated to allow the positioning of a single implant analog at different depths. Four groups based on the planned implant depths of 0, 3, 6 and 7mm and corresponding visibility of …

Valorization Of Xylan In Agroforestry Waste Streams, Harrison Appiah

Graduate Theses, Dissertations, and Problem Reports (ETD)

Valorization of Xylan in Agroforestry Waste Streams.

Harrison Appiah

Microwave-assisted deep eutectic solvent and gamma-valerolactone metallic chloride catalyzed conversion of xylan to furfural were investigated using a 2x3 factorial experimental design at two levels of percent microwave power, reaction time, and catalyst concentration. The levels of each factor studied were (20%, 60% microwave power, 2, 4 minutes, and 10, 20mg) respectively. The effect of three metallic chloride catalysts (LiCl, FeCl3.6H20, CuCl2) on the conversion of xylan to furfural was also investigated. The gamma-valerolactone-ferric chloride sent system exhibited the highest mean yield of furfural (56.50%). The next highest furfural yield of …

An Exploration Of How University Development Officers Can Cultivate Year 0 Alums, Lily Mcknight

Graduate Theses, Dissertations, and Problem Reports (ETD)

As higher education in West Virginia continues to lose state funding, students’ tuition is increasing to fill the gap. These tuition increases have led to an increased reliance on private funding and a need to creatively approach engaging new potential donors. Year 0 Alumni are an ignored group of stakeholders when it comes to university fundraising, likely due to their limited potential to make large gifts. However, cultivating these relationships demonstrates the long view necessary for future planning, while providing a novel approach for smaller gifts that can accumulate to meaningful support to address the current emerging need.

To this …

Selected Principles Of Practicing For Security In Performance, Hsing-Yi Tsai

Graduate Theses, Dissertations, and Problem Reports (ETD)

This research focuses on extending the imagination for the purposes of activating our brain to strengthen memorization of music for a stronger and more secure performance. This research explores the concept of self-awareness in the sense of having a conversation with ourselves in order to understand the primary reasons we pianists spend hours in the practice room. I introduce selected strategies for learning pieces through a meticulous process of memorization which impacts not only new pieces, but also the resurrecting of old repertoire. Along with including the concept of the Memory Palace, I explore different methods of memorizing music to …

Ecology Of Freshwater Turtles And Other Wetland Wildlife In A North-Central West Virginia Watershed, Darien N. Lozon

Graduate Theses, Dissertations, and Problem Reports (ETD)

The goal of wetland mitigation in the United States is to achieve a no-net-loss of wetlands; however, mitigated wetlands must be monitored to ensure wetland function is comparable to natural wetlands. In this study, relationships between land use practices and freshwater turtle abundance, wetland connectivity, and heavy metal bioaccumulation were investigated. In Chapter 1, a summary of pre-restoration species abundance and diversity is provided for anurans, birds, benthic macroinvertebrates, fishes, small mammals, plants, and turtles in riparian wetlands along Ruby Run, a tributary of Deckers Creek in north-central West Virginia, USA. These data provide a baseline for comparison after mitigation …