Digital Commons Network^™

Assessing Carbon Sequestration Of Mixed Hardwood Forests Through Optimizing Harvesting Strategies And Biomass Utilization For Biochar, Bibek Aryal

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study investigated the long-term carbon stock of central Appalachian mixed hardwood forests under several harvesting strategies. The strategies were optimized to maximize both long-term carbon sequestration and timber supply during harvest using Mixed-Integer Linear Programming (MILP) models. Clear-cut (CC), Partial cut (PC), and mixed harvesting methods to unharvested conditions over 190 years were studied. Initially, harvested forests showed lower sequestration rates than unharvested forests but eventually surpassed them, with CC showing the highest rates over time. Younger forests, particularly those aged 85 to 130 years, exhibited peak carbon sequestration rates. Regarding carbon stock, the unharvested scenario initially had the …

Investigation Of Synergistic Effect Between Polystyrene And Polyethylene Under Conventional Thermal Heating And Microwave Heating, Thang Luong

Graduate Theses, Dissertations, and Problem Reports (ETD)

Single-use plastics (Low Density Polyethylene, LDPE; Polystyrene, PS; Polypropylene, PP) are increasingly used in the modern world, with their usage growing every year. An effective method to manage the resulting waste is urgently needed, as landfilling and incineration have proven harmful to the environment in the long term. Mechanical recycling may not maintain the desirable characteristics of the single-use plastics through several cycles. Pyrolysis emerges as a promising approach to address plastic waste. Given that single-use plastic waste often comes in a mixture, combining plastic in the feedstock is a viable solution to effectively convert these polymers altogether to gain …

Dynamic Load Identification Using Optimal Sensor Placement And Dynamic Condensation Methods, Iole Pecora

Graduate Theses, Dissertations, and Problem Reports (ETD)

Knowledge of excitation loads that structures experience during their service life is pivotal in different engineering fields, not only from a structural design optimization point of view but also as prevention of possible damages to the structures themselves. However, in case of dynamic events such as tornadoes, structures subjected to impulsive load due to their vicinity of explosions, the excitation load cannot be directly determined through direct measurements. In these scenarios, the inverse problem is used, and it is called load identification. This type of problem tries to determine the excitation load knowing the system response through a series of …

Personalized Molecular Therapies For Advanced Non-Small Cell Lung Cancer: Overcoming Heterogeneity To Optimize Treatment Response And Clinical Outcomes, Zuan-Fu Lim

Graduate Theses, Dissertations, and Problem Reports (ETD)

Lung cancer remains one of the deadliest cancers. Novel, paradigm shifting treatments including immunotherapy and targeted therapies have recently been developed to cull the deadly effects of lung cancer, but many challenges remain. There remains a significant unmet need to accurately predict and optimally select for patients who will respond to immune checkpoint inhibitors (ICI) treatment. In Chapter 2 of this dissertation, we investigated a novel live single cell cytokine profiling lab-on-chip platform, IsoLight, using peripheral CD4+ and CD8+ T-cells for ICI biomarker development. A total of 55,175 single T-lymphocytes were analyzed in this proof-of-concept study. We found that an …

Room Temperature Decarboxylative Amination Reactions Of Carboxylic Acids, Rabina Basnet

Graduate Theses, Dissertations, and Problem Reports (ETD)

Anilines are important structural motifs present in numerous natural products and pharmaceutically relevant compounds. Among the various synthetic strategies that have been developed, transition-metal-catalyzed cross-coupling reactions represent one of the most commonly employed methods for the formation of anilines. However, these approaches generally require pre-functionalized aryl coupling partners, and the utilization of more readily available, and structurally diverse coupling partners, such as carboxylic acids, would be desirable. Decarboxylative coupling reactions have garnered significant attention as an alternative approach to form new C-N bonds, and substantial progress has been made in this area. Nevertheless, these methods remain limited, with a predominant …

Carl Philipp Emanuel Bach’S Sonata In C Minor, Wq. 65/31: A Study Of Performance Practice, Weiyang Sun

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation discusses concepts of performance practice in Carl Philipp Emanuel Bach's keyboard works, including historical instruments, fingering, articulation, ornamentation, dynamics, rhythm, and other related topics. It provides an interpretive analysis of C. P. E. Bach's Sonata in C Minor, Wq. 65/31, for keyboard, as a way to discuss the application of these issues. Additionally, this dissertation includes a brief biography of C. P. E. Bach, a list of his keyboard works, and a discography of current and historical recordings of the Sonata in C Minor, Wq. 65/31.

Application Of Predictive Control Strategies For Water-Gas Shift Membrane Reactors Using Data-Driven Models, Bernardo De Oliveira Vecchio

Graduate Theses, Dissertations, and Problem Reports (ETD)

As demand for more efficient processes keeps rising and more restrictive environmental legislation requires higher levels of both yield and purity, the process industry has now, more than ever, been looking for new ways to achieve these goals. One approach has been the implementation of Process Intensification (PI). PI aims to combine multiple unit operations into a single one, promoting efficiency gains on multiple levels. This combination, however, leads to complex process dynamics, and controlling such processes, particularly when setup as multi-input-multi-output (MIMO) systems, presents a great challenge due to highly interactive complex process dynamics and the imposition of many …

Political Agency In The Occupied House: Reconstructing Memory Through Squatter Resilience At Topf And Sons Historical Museum, Ebony Taylor Martin

Graduate Theses, Dissertations, and Problem Reports (ETD)

During the Holocaust the company of J.A Topf and Sons refocused their production to produce and improve a design for corpse incineration ovens. Their contributions streamlined the efficiency and performance of the death camps adding to the mounting death toll. Years after these evens the company grounds were abandoned and then given life again by a leftist youth movement. The squatter’s reinterpreted the history, led tours and utilized the grounds to create a third place for community, art and music. When the city decided to recognize the history of the company, the squatters were forcefully removed, and the building transformed …

Autonomous Object Search Planning In Large-Scale Environments, Matthew A. Collins

Graduate Theses, Dissertations, and Problem Reports (ETD)

The advancement of autonomous search holds significant promise for applications ranging from emergency response to planetary exploration. This thesis investigates strategies to enhance autonomous search performance in large-scale environments. The main contribution of this work is its practical application in real-world scenarios, where efficient search methods are essential for managing vast amounts of data, particularly in large environments. Effective search planning requires navigating complexities such as limited prior information and managing large state spaces, necessitating advanced strategies to plan with this limited information. Additionally, balancing exploration and exploitation is crucial for optimizing the search process, as it ensures thorough coverage …

Power Safety Plan Checklist As An Intervention In The Operating Room, Scott John Fankhauser

Graduate Theses, Dissertations, and Problem Reports (ETD)

ABSTRACT

Power Safety Plan Checklist as an Intervention in the Operating Room

Scott J. Fankhauser

Background: Intraoperative power failures (IOPF) force anesthesia providers to quickly make decisions to prevent patient harm when equipment does not operate as designed. Familiarity with alternative methods is critical during this decision process to deliver high-quality care during IOPF events. Purpose: The purpose of this project was to assess the impact of a checklist on anesthesia providers’ perceptions regarding continuation of care during an IOPF. Interventions: Pre- and post-intervention surveys were conducted during a simulation and education setting for annual competencies. Methods: The study …

Changes In Psychiatric Diagnosis Associated With Sars-Cov-2 Infection And Predicting The Development Of New Psychiatric Illness In Covid Patients By Using Machine Learning Approach: A Study Using The Us National Covid Cohort Collaborative (N3c), Asif Rahman

Graduate Theses, Dissertations, and Problem Reports (ETD)

The enduring impact of COVID-19 extends beyond acute illness, with potential long-term psychiatric consequences raising significant concern among healthcare professionals and researchers alike. Emerging evidence suggests a multifaceted relationship between COVID-19 and the development of different psychiatric illnesses like Schizophrenia Spectrum and Psychotic Disorders (SSPD), Depression, Bipolar disorder, Personality disorder, Trauma, and a range of other mental health conditions. Considering these emerging connections, our study endeavors to rigorously assess the associations between COVID-19 and various psychiatric illnesses while simultaneously employing machine learning techniques to predict the development of new psychiatric disorders in individuals affected by the virus. Leveraging the extensive …

Real-Time Cyber-Power Testbed Enhancement And Synchrophasor Data Generation For Anomaly Detection Using Physics-Informed Machine Learning, Vasavi Sivaramakrishnan

Graduate Theses, Dissertations, and Problem Reports (ETD)

Advanced sensing and automation are essential to managing the evolving electric power system with tight coupling of information and power system layer. However, this increasing number of cyber-physical devices brings vulnerabilities from cyber threats and extreme weather events can endanger the power system on a physical level as well. Advanced monitoring and control algorithms with human operators in the loop are needed to enable power system resiliency despite these increasing threats. These advanced algorithms require validation using a realistic test system that mimics real-world scenarios.

This work focuses on a) developing a realistic real-time cyber-power testbed with hardware-in-the-loop to generate …

Breaking The Silence: International Students’ Communication About Sexual Assault And Opportunities For Improved Prevention Messaging, Samaha Ghani

Graduate Theses, Dissertations, and Problem Reports (ETD)

The beginning of college campus life is one of the most exciting phases of student life. However, for some students, it might pose a threat in the form of sexual violence. In the United States, sexual violence is highly pervasive, placing college students at a greater risk of victimization. Currently, there is a lack of data on sexual crimes within the international student population on U.S. college campuses due to cultural and language barriers. As such, the purpose of this study is to explore international students’ communication needs around the topic of sexual consent and sexual violence. This vulnerable and …

Iron Coated Sand: A Sustainable Substrate Amendment For Nutrient Management And Growth Of Floriculture Crops, Savannah Mead

Graduate Theses, Dissertations, and Problem Reports (ETD)

Acid mine drainage and phosphorus pollution are two of the most pervasive forms of water contamination in Appalachia and globally. The horticultural industry is a contributor to nutrient pollution via leaching from greenhouses, necessitating the adoption of more sustainable practices for container production in controlled environments. In this thesis, an acid mine drainage-based iron-coated sand product was assessed on its effectiveness for phosphate adsorption when used as a sustainable substrate amendment for soilless container production of flowering ornamentals. The first study centered around the amount of iron-coated sand to use for production of petunias, pansies, and chrysanthemums. Iron-coated sand at …

Three Essays On Energy Related To State Policies And Low Carbon Transitions, Pinky Thomas

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation consists of three essays on energy-related state policies and energy transition. Each paragraph below refers to the three abstracts for the three chapters in this dissertation, respectively.

The first essay is entitled: “Impacts of State Tax and Resource Ownership Policies on Extraction: Evidence from U.S. Natural Gas Production”. The innovation of combined use of horizontal drilling and hydraulic fracturing technologies during the 2000s has allowed natural gas producers in the United States to extract natural gas and liquids from deep shale formations in a cost-efficient manner. This essay evaluates whether unconventional gas production responds to tax changes, and …

Bystander Interventions For Sexual Assault Prevention Among Students In Greek Life, Caterina Defazio

Graduate Theses, Dissertations, and Problem Reports (ETD)

Background: Bystander-based sexual violence (SV) prevention programs are critical on college campuses to meet federal Title IX requirements and have proven effective in reducing violence. Greek-affiliated students (members of fraternities and sororities) are at a higher risk for sexual assault than their peers, yet current training programs often do not address their specific needs. This dissertation comprises three interconnected studies that collectively aim to improve bystander intervention strategies for this high-risk group. Aim 1 - Scoping Review: A scoping review was conducted to identify and describe bystander intervention programs delivered to Greek-affiliated students in the US and Canada. An eight-database …

Cellular Level Changes Induced In Cancer Cells Due To Microgravity, Sai Deepika Reddy Yaram

Graduate Theses, Dissertations, and Problem Reports (ETD)

The increase in human activity in space has revealed several kinds of physiological challenges brought on by the absence of Earth's gravitational pull. NASA observed that during spaceflight, astronauts experience a 1-1.5% monthly loss in the mineral density of weight-bearing bones, with rehabilitation efforts on Earth often proving ineffective. This issue extends to muscles, the neuro vestibular system, the cardiovascular system, and vision. Cancer has emerged as a significant cause of mortality among astronauts, with studies up to 2017 showing that 41.3% of natural cause deaths among U.S. astronauts were due to cancer, primarily due to space radiation exposure. Cancer …

Venus Balloon Localization: A Map-Aided Navigation Approach Supported By A Single-Satellite, Heath Scott Cottrill

Graduate Theses, Dissertations, and Problem Reports (ETD)

Although Venus and Earth began as twins, possessing comparable size, mass, and composition, past exploration missions have revealed that Venus is now hellishly hot, devoid of oceans, and enveloped in a carbon dioxide-filled atmosphere. To understand when and why this evolutionary divergence occurred, further exploration is required. Today, there is a growing interest in the use of aerial platforms to circumvent the harsh conditions at the surface, which limit the lifetime of landed instruments. In this concept, a single balloon, propelled by the ambient wind field, would operate in the atmosphere at an altitude between 50 and 70 km, where …

From Risks To Adoption: Unraveling U.S. Consumer Behavior In C2c Online Secondhand Marketplaces, Sudipta Das

Graduate Theses, Dissertations, and Problem Reports (ETD)

The growth of secondhand product sales has surged in recent years, underscoring the importance of secondhand marketplaces. Consumer-to-consumer (C2C) platforms represent a new era in these marketplaces. This study investigates the factors influencing U.S. consumers' behaviors towards utilizing C2C online marketplaces, employing the Unified Theory of Acceptance and Use of Technology 2 (UTAUT2) framework, which is widely used to understand the adoption of technology or new innovations. Given the inherent risks associated with sharing personal and financial information, as well as the uncertainties between buyers and sellers, the variable of perceived risk was also included in the study. A comprehensive …

Depicting The Donald: How Framing Of Donald Trump In Media Changed Throughout The Course Of His 2015-2016 United States Presidential Campaign, Jakob O. Janoski

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study examined how framing of Donald Trump in online news images may have changed throughout the course of his 2015-2016 United States presidential campaign. Previous research suggests that Republican presidential candidates may get more coverage but not necessarily be framed as more favorable (Moriarty and Popovich, 1988). The content analysis comprised of 18 constructed weeks in which images from various outlets were analyzed in nine categories (e.g., “facial expression” and “posture”) and coded as either “more favorable,” “N/A” or “less favorable.” It was found that image favorability of Trump dipped from the Pre-Primary period to the Primary period then …

Effects Of Dietary Supplementation Of A Blend Of Saccharomyces Cerevisiae, Multiple Live Probiotic Bacteria, And Their Fermentation Products On Performance, Health, And Rumen Bacterial Community Of Newly Weaned Beef Steers During A 56-D Receiving Period, Emily Treon

Graduate Theses, Dissertations, and Problem Reports (ETD)

We examined the effects of a blend of Saccharomyces cerevisiae, multiple live probiotic bacteria and their fermentation products on performance, health, and the ruminal bacterial community of newly weaned beef steers during a 56-day receiving period. Forty newly weaned Angus crossbred steers (221 ± 25.6 kg BW; 180 ± 17 d of age) were stratified by body weight into four pens (10 steers per pen) such that each pen had a similar average body weight at the beginning of the experiment. The pens were randomly assigned to receive a corn silage basal diet (CON; n = 20) or the …

Associations Among Psychosocial Factors, Health-Related Quality Of Life, And Adherence In Pediatric Inflammatory Bowel Disease, Cecelia I. Nelson

Graduate Theses, Dissertations, and Problem Reports (ETD)

Inflammatory Bowel Disease (IBD) is a prevalent disorder among youth in the United States. IBD is one of the leading causes of chronic pain in adolescence and symptoms can lead to reduced quality of life, social embarrassment, and lower self-esteem. Adherence to medical regimens for IBD is incredibly important to prevent morbidity, mortality, and impaired health-related quality of life (HRQOL). However, adolescents struggle generally with adherence and the regimen for IBD can be complicated and include aversive side effects. Psychological factors, such as depressive symptoms, are key factors associated with non-adherence. Nevertheless, gut-specific anxiety (GSA) is a psychological factor that …

A Randomized Controlled Trial Of Group Telehealth Workshops Based On Parent-Child Interaction Therapy For Caregivers Of Children With Autism Spectrum Disorder, Erinn J. Victory

Graduate Theses, Dissertations, and Problem Reports (ETD)

Autism spectrum disorder (ASD) is a neurodevelopmental disorder associated with various symptoms that interfere with functioning requiring intensive early intervention; however, many families experience barriers to accessing behavioral services due to provider shortages, cost of treatment, and lack of transportation. Parent-Child Interaction Therapy (PCIT) has demonstrated effectiveness as a supplemental treatment for disruptive behaviors in children on the autism spectrum. The current study aims to determine the efficacy of a 2-day group telehealth parent-only workshop based on PCIT for improving caregivers’ use of positive parenting skills, child disruptive behavior, compliance to caregiver commands, and child psychosocial functioning. Thirty-three caregivers and …

A Critical Event Narrative Analysis Of African Women Immigrant Entrepreneurs In The United States: Impacts Before, During, And After The Covid-19 Pandemic, Damilola T. Fasinu

Graduate Theses, Dissertations, and Problem Reports (ETD)

This doctoral research presents a qualitative critical event narrative study focused on African Women Immigrant Entrepreneurs (AWIE) in the United States during the COVID-19 pandemic. The study aims to explore the unique challenges, coping mechanisms, and resilience strategies of AWIE by examining their experiences before, during, and after the pandemic. The research is driven by three guiding questions: (1) How do AWIE describe their experience before the pandemic? (2) During the pandemic? (3) After the pandemic? This inquiry provides a comprehensive narrative, capturing the challenges and successes experienced in the pre-pandemic environment, documenting the immediate impacts of the pandemic on …

Success Beyond Access: Examining Institutional Barriers To Persistence And The Supports Needed By Nontraditional Students Participating In A Tuition-Free Community College Program, Amanda K. Roeher

Graduate Theses, Dissertations, and Problem Reports (ETD)

This research study examined the experiences of nontraditional community college students attending through a tuition-free grant. The intent of the study was to explore the student identified barriers to degree persistence and the student support services nontraditional students recognize as being beneficial towards their academic journey. This qualitative case study was guided by three research questions and utilized Bean and Metzner’s (1985) Nontraditional Student Attrition Model as a guide for study design and analysis. Data collection consisted of student interviews and institutional document collection. Data analysis explored themes related to nontraditional student motivations for attendance, persistence factors, and student support …

Photoinduced Alpha-Hydroxy C–H Alkylation Of Mono-Alcohols Via Hydrogen Atom Transfer (Hat) Of An Activated Boron-Containing Complex, Courtney Deanna Glenn

Graduate Theses, Dissertations, and Problem Reports (ETD)

Hydroxy (-OH) groups are one of the most abundant functional groups found in natural products and pharmaceuticals with many of these compounds containing multiple alcohol classes. The ability to selectively functionalize a specific α-OH C–H bond in the presence of other competitive sites would provide straightforward access to new, potentially bioactive compounds. In recent literature, photoredox catalysis has been implemented to perform site and stereoselective α-OH C–H functionalization of cis-diol containing substrates. Incorporating an organoboron cocatalyst into these systems have proven to be crucial in decreasing the bond dissociation energy (BDE) and increasing hydricity of the α-OH C–H bond …

Exploring The Relationship Between Perfectionism And Academic Achievement In College Stem Students, Alexander Joseph Tylka

Graduate Theses, Dissertations, and Problem Reports (ETD)

Higher education practitioners and researchers in the STEM field continue seeking ways to effectively identify and understand student challenges as part of an effort to support student success, retention, and persistence. These efforts have led researchers to explore non-cognitive personality factors such as perfectionism as a way of understanding students’ thoughts, feelings, behaviors, and outcomes. This research explores two fundamental research questions regarding the ability of perfectionism to predict end-of-term GPA. First, does perfectionism predict end-of-term GPA using the 2x2 model of dispositional perfectionism? The hypotheses associated with the 2x2 model were used to address this question, and the results …

Isabella: An Eternal Badass An Actor’S Exploration On Healing, Forgiveness, And Learning To Embrace The Messiness Through Isabella In William Shakespeare’S Measure For Measure, Shelby E. Garrett

Graduate Theses, Dissertations, and Problem Reports (ETD)

This thesis not only delves into the acting methods used to portray Shakespeare's Isabella in West Virginia University's spring 2023 production of Measure for Measure, but also examines the innovative approach of interpreting the character through the perspective of an older actor. It will examine acting techniques such as Meisner, Fitzmaurice Voicework®, yoga, and chakra work, detailing their influence on character development. From audition to performance, this document will track my journey, capturing personal insights through journal entries, sound bites, and images that helped in shaping a more mature Isabella. Additionally, it explores how actors navigate personal challenges during …

Evaluating Land Cover Change And Opportunities For Bioenergy Crop Development On Surface Mine Sites In West Virginia, U.S.A., Kenzie D. Kohrs

Graduate Theses, Dissertations, and Problem Reports (ETD)

Surface mining can impact land cover, forests, and water quality. Current reclamation strategies include revegetation with herbaceous species due to the ease and speed of cover establishment. Herbaceous and woody biomass crops have been used in various studies to reclaim surface mines and act as an alternative to nonrenewable energy sources. The objectives of this study were to quantify the state of vegetation growth on former surface mines in West Virginia over a 9-year period and identify suitable acreage for bioenergy production. During 2011 to 2020, we found that over 40,000 acres had been converted to forest and 40,000 acres …

Utilizing Suas-Based Remote Sensing For Sustainable Outdoor Recreational Trail Design And Monitoring, Isaac C. Kinder

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study utilizes sUAS-based remote sensing and hydrologic models to analyze and predict locations susceptible to water-based trail erosion. Erosion is frequently cited as the most significant environmental impact of trails and often requires costly design and management considerations. A professionally designed trail totaling 4 km in length was segmented based on presence or absence of water-based erosion for analyses and then flown with sUAS technology. Three Logistic regression (LR) models were generated utilizing several hydrologic terrain models of varying resolutions to determine the effects of spatial resolution on the models’ predictive accuracies. Receiver operator characteristics, kappa, and overall accuracy …