Digital Commons Network^™

Understanding Emerging Travel Behavior In New York City, Md Amdad Hossen

Graduate Theses, Dissertations, and Problem Reports (ETD)

Many large cities face significant challenges in providing safe, economical, equitable, reliable, and efficient mobility services. Moreover, mobility service options have been changing unprecedentedly due to the advent of emerging mobility services. Understanding the impacts of emerging mobility services (e.g., for-hire vehicles, bike sharing) on other travel modes (e.g., transit, non-motorized modes, personal car) and evolving travel behavior is critical to promote sustainable modes for urban residents and reduce auto-dependency. New York City (NYC) has been conducting annual mobility survey since 2017 to understand the emerging travel behavior and mode choice characteristics. This dataset presents a unique opportunity for conducting …

Dietary Supplementation And Functional Foods: From Development To Clinical And Public Health Implications, Rachel Grace Newman

Graduate Theses, Dissertations, and Problem Reports (ETD)

A rigorous research process is the foundation for the development and ultimate recommendation for use of dietary supplements and functional foods. This dissertation uses three seemingly disparate studies to explore the diverse research methodologies used in dietary supplement and functional food development and use. The first study focuses on primary research on the development of microgreen lemon balm herbal tea, employing experimental methodologies to assess its nutritional and bioactive properties compared to adult lemon balm herbal tea. Results showed that adult lemon balm tea contained higher total phenolics, total flavonoids, rosmarinic acid, and antioxidant capacity than microgreen teas, with hot …

Study Of Capillary Channel Fiber Augmented Geobags For Accelerated Dewatering Of High Moisture Content Fine-Grained Acid Mine Drainage Precipitate, Luke William Daugherty

Graduate Theses, Dissertations, and Problem Reports (ETD)

The objective of this study was to investigate techniques to accelerate filtration and dewatering of Acid Mine Drainage precipitate using geobags augmented with Capillary Chanel Fibers and internal lateral drainage structures. Laboratory and field research investigated increasing the total solids retention of Acid Mine Drainage precipitate in geobag storage systems. Current geobag design and field application of treated AMD precipitate exhibits limited filtration and drainage efficiency due to the high moisture content (2500%) polymer amended AMD flocculated solids. Capillary channel fibers (CCFs) are geosynthetic yarns formed with microgrooves and set into bundled arrangements capable of wicking water, via capillary action, …

Understanding The Effects Of The Covid-19 Pandemic On West Virginia Students In Secondary School, Hannah Mckenzye Layman

Graduate Theses, Dissertations, and Problem Reports (ETD)

Abstract 1

Background: The COVID-19 pandemic negatively impacted the mental health of young people. Mental health disparities among youth are abundant, so understanding how the pandemic may have affected specific sub-groups to develop tailored interventions to mitigate variations in health disparities is essential. Methods: School-based survey data from the Young Mountaineer Health Study (YMHS) was used to create generalized estimating equations models predicting anxiety and depression among early adolescents. The cohort sample included 2,322 students. Waves 1, 2, and 3 were collected ~6 months apart. Independent variables included COVID-19-related emotional impact (scale range: 5-25) and social support. Results: Average age …

Looking Inward, Looking Back: John Le Carré And The Spy Narrative After The Cold War, Rachel Lynn Hoag

Graduate Theses, Dissertations, and Problem Reports (ETD)

The genre of spy fiction confronts a paradigm-shifting event in the 1990s with the end of the Cold War. Despite critical speculation that the genre had outlived its usefulness, spy fiction writers navigate this period of transition, and the genre remains broadly popular with the reading public. This study examines how the work of Britain’s foremost espionage writer, John le Carré, navigates the changing geopolitical landscape of the late twentieth and early twenty-first century. In mapping this terrain, one sees two distinct impulses emerge: a tendency to look inward and a tendency to look back. To look inward, the novels …

Profiles Of Positive And Negative Risk-Taking Among Asian And Non-Asian American Emerging Adults, Yea Won Park

Graduate Theses, Dissertations, and Problem Reports (ETD)

Emerging adults can engage in both positive and negative risk-taking. Based on recent previous research that identified various risk-taking profiles (Duell et al., 2022), the current project extends the literature in several ways. The purpose of this study was to (1) identify profiles of risk-taking behavior among US college students, (2) examine how correlates of cognitive values and interpersonal factors relate to risk-taking groups, and (3) investigate the role of cultural values in risk-taking profiles among Asian and non-Asian American college students. The sample was 401 participants recruited from universities in the US. Latent Profile Analyses indicated that 4-profile solution …

Quantifying Variation In High-Quality Footwear Replicate Impressions, Samantha K. Brady

Graduate Theses, Dissertations, and Problem Reports (ETD)

A footwear impression collected at a crime scene can provide information about the shoe that created it, yielding investigative leads, excluding persons-of-interest, and linking evidence between cases. The analysis of footwear evidence often requires the preparation of test impressions from known exemplar shoes created under controlled laboratory conditions for comparison to questioned impressions. The goal of these comparisons is to evaluate the degree of similarities and differences between the questioned impression and potential sources.

Given that this comparison leads to an assessment of the nature and degree of agreement between questioned and known impressions, it is important to characterize the …

Chemotherapy-Induced Pdl-1 Expression In Cancer-Associated Fibroblasts Promotes Chemoresistance In Nsclc, Gayathri Heenatigala Palliyage

Graduate Theses, Dissertations, and Problem Reports (ETD)

A cure for cancer is out of reach for most patients due to chemoresistance. Cancer-associated fibroblasts (CAFs), one of the most abundant types of stromal cells in the tumor microenvironment, are known to provide functional and structural support for tumor progression. These cells also play a role in cancer chemoresistance, but a detailed understanding of the process, particularly in chemoresistant lung cancer, is lacking. In this study, we investigated programmed death-ligand 1 (PDL-1) as a potential biomarker for CAF-induced chemoresistance and evaluated its role and underlying mechanisms of chemoresistance in non-small cell lung cancer (NSCLC). We demonstrated that chemotherapy-stimulated CAFs …

Applications In Macroeconometrics, Corey J.M. Williams

Graduate Theses, Dissertations, and Problem Reports (ETD)

The title of this work, "Applications in Macroeconometrics," reflects the unifying theme of my essays: new, and original research in applied macroeconomics, and applied econometrics. This dissertation consists of three chapters specifically looking at producer price inflation pass-through, technical progress, and moral hazard in United States critical banking markets.

My first chapter seeks to quantify the pass-through (PT) and causal direction of producer to consumer prices. We further disaggregate PPI down to commodity-specific indices to quantify disaggregated PPI PT coefficients. By estimating an augmented Phillips Curve, we find short-run PT of aggregate PPI to be around 7 percent. Using a …

Sexism In The Digital World: A Thematic Content Analysis Of The Cyberbullying Of Lil Miquela, Shyanne Elizabeth Schmithorst

Graduate Theses, Dissertations, and Problem Reports (ETD)

As artificial intelligence (AI) evolves, social issues associated with this technology are also perpetuated. This is especially pertinent to online violence against women. In April 2016, fictional character “Lil Miquela,” an AI robot who would quickly rise to fame as a social media influencer, was created using Computer-Generated Imagery (CGI). Significant backlash has persisted against Lil Miquela throughout its existence, which has typically taken the form of demeaning comments made by other users on Lil Miquela’s social media pages. As the robot looks deceptively like a human female, the robot receives online treatment that mimics that of human women. Utilizing …

Internalized Heterosexism, Shame Proneness, And Disclosure In Clinical Supervision Among Sexual Minority Supervisees, Christian Joseph Carey

Graduate Theses, Dissertations, and Problem Reports (ETD)

Sexual minority supervisees face unique struggles including prejudice, discrimination, and heterosexism, which may impact their psychological well-being and development within the supervisory experience through shame proneness and reduced disclosure. This study aims to explore the challenges facing sexual minority trainees and contribute to the empirical knowledge of multicultural supervision. Thus, this study proposes two mediation models for the hypothesized relationships among internalized heterosexism, shame-related withdrawal, shame-related negative self-evaluation, and disclosure in supervision. A total of 170 supervisees identifying as sexual minorities completed an online survey. The primary analysis included a three-step linear regression and confirmatory analysis for mediation. The results …

Mitigation And Preparedness In Disaster Communication: Examining The Need For Closing The Loop In The Discourse Of Renewal Theory, Abigail Renee Riggs

Graduate Theses, Dissertations, and Problem Reports (ETD)

Flooding across rural Appalachia has historically negatively impacted communities, and flood frequency is only expected to increase in the region as global temperatures rise. This indicates a need for effective disaster and crisis communication in flood-prone communities within the region. The discourse of renewal and readiness for renewal theories provide potential avenues for improving crisis and disaster communication. Readiness for renewal in particular focuses on closing the gap between the pre and post-crisis phases. However, readiness for renewal has yet to be applied to disaster communication and has not been studied qualitatively. Additionally, ethical guidelines for communication within renewal have …

Love, Life, And Controversial Topics: A Content Analysis Of The Top Liked Abortion Tiktok Videos Before And After The Overturning Of Roe V. Wade, Jill E. Sturges

Graduate Theses, Dissertations, and Problem Reports (ETD)

TikTok is a trendy social media platform that has attracted billions of monthly users. Anyone can post a short video about their interests, beauty, relationships, travel, and controversial topics if they are 13 or older. Many young adults turn to social media platforms, such as TikTok, to help them make decisions regarding their everyday lives and to discuss controversial topics, such as abortion. The concern with social media content is the misinformation and disinformation that can spread rapidly across the globe with a click of a button. Numerous studies have begun to examine social media platforms for the accuracy of …

Understanding The Impact Of Scientific Testimony On Potential Jury Members: Independent And Interactive Effects Of Expert Characteristics And Jury Member’S Social Location, Ellory R. Dabbs

Graduate Theses, Dissertations, and Problem Reports (ETD)

As science and technology evolve, they impact society at different levels. With these changes, it is important to understand how members of society will be affected. One area where there has been a rise in the use of scientific information is in jury trials. Those who are on trial for a criminal offense are more often relying on forensic evidence, and forensic experts, to aid in their defense, and those who are prosecuting a criminal case are also relying on forensic evidence and forensic experts. However, forensic evidence is not consistent in type or interpretation – what one person may …

Conservative Anabaptists Descriptions Of Delay, Comfort In Connectedness, And Ease In Cultural Tension When Seeking And Responding To Healthcare, Matthew Donald Hottle

Graduate Theses, Dissertations, and Problem Reports (ETD)

Abstract

Conservative Anabaptists description of delay in health seeking behaviors, comfort in connectedness, and ease in cultural tension when seeking and responding to healthcare

Background: Conservative Anabaptists are a large ethnic religious population that continues to grow in the United States. This includes groups of Amish, Mennonites, Hutterites, and Brethren populations residing in rural areas. These groups are known to experience adverse health related outcomes such as community acquired infections, advanced cancer diagnosis, and undiagnosed chronic conditions such as hypertension, diabetes, and heart disease. Therefore, the concept transcending health values has been developed to better understand how conservative anabaptists describe …

Solid State Nmr Analysis Of Insect Wing Membranes, Samuel Eddy

Graduate Theses, Dissertations, and Problem Reports (ETD)

Solid State NMR is a powerful tool for analyzing the chemical composition of insects. Previous studies have used Solid State NMR to investigate the chemical composition and investigate the sclerotization (tanning) process of insect exoskeletons. Acquiring sufficient exoskeleton sample for analysis has been relatively simple. This is however not the case for other components of an insect’s physiology, particularly the wing membrane material. The wings of an insect only compose a small percentage of their overall body mass, and many hundreds to thousands of insects must be processed in order to achieve a few milligrams of wing membrane sample. The …

Comparative Analysis Of Artificial Intelligence And Numerical Reservoir Simulation In Marcellus Shale Wells, Arya Maher Sattari

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation addresses the limitations of conventional numerical reservoir simulation techniques in the context of unconventional shale plays and proposes the use of data-driven artificial intelligence (AI) models as a promising alternative. Traditional methods, while providing valuable insights, often rely on simplifying assumptions and are constrained by time, resources, and data quality. The research leverages AI models to handle the complexities of shale behavior more effectively, facilitating accurate predictions and optimizations with less resource expenditure.

Two specific methodologies are investigated for this purpose: traditional numerical reservoir simulations using Computer Modelling Group's GEM reservoir simulation software, and an AI-based Shale Analytics …

Footwear Image Quality Classification: Using Subjective Assessments And Objective Image Metrics To Predict Impression Quality, En-Tni Lin

Graduate Theses, Dissertations, and Problem Reports (ETD)

Shoeprints deposited during the commission of a crime vary in quality as a function of numerous factors, such as substrates, media, and the specific physical activities carried out by perpetrators. This variability in impression quality impacts the amount of information available from questioned crime scene impressions, and therefore an examiner's confidence in providing opinions of source attribution. In response, this research attempted to characterize footwear impression quality based on image sharpness, contrast, entropy, homogeneity, noise, quantity of information, and complexity, and to integrate these hand-engineered feature descriptions with subjective opinions of impression quality.

The methodology followed a five-pronged approach. First, …

“I’Ll Tell You No Lies”: An Exploration Of Trauma, Memory, And Violence Against Women In North Carolina Murder Ballads, Madison Ava Helman

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation explores trauma, memory and violence against women in Western North Carolina murder ballads “Tom Dooley,” “Poor Omie Wise,” “Poor Ellen Smith,” “The Ballad of the Lawson Family,” and “Frankie Silver.” I posit that these ballads were influenced by prescriptive societal conceptions of femininity, which in turn influenced societal ideations of violence against women. Using folklore performance theory, I analyze the text and context of these ballads and their subsequent histories, eventually arriving at a template for polyvocality that incorporates multiple ballad variants and encourages diverse performances.

Applications Of Digital Filters In Radio Astronomy, Joseph William Kania

Graduate Theses, Dissertations, and Problem Reports (ETD)

The radio sky spans tens of orders of magnitude in length, density, and time.
In this thesis, using novel filtering techniques and two different telescopes,
we investigate two tracers of cosmic structure: Baryon Acoustic Oscillations
(BAOs) and Fast Radio Bursts (FRBs). BAOs formed as the universe cooled
after the Big Bang. BAOs provide a fiducial length scale of the universe
throughout cosmic time and thus can be used to understand how the universe
is evolving. FRBs are very bright, short timescale, bursts of as-yet unknown
origin which occur uniformly on the sky at a rate of a few thousand per …

Development Of A Hydrometallurgical Process For The Extraction Of Cobalt, Manganese, And Nickel From Acid Mine Drainage Treatment Byproduct, Alejandro Agudelo Mira

Graduate Theses, Dissertations, and Problem Reports (ETD)

Critical minerals (CMs) are defined as crucial elements for the country's economy due to the development of new cutting-edge applications and the risk of an eventual disruption in their supply chain. The unique chemical and physical properties of the CMs have made these elements decisive in the growth of industries such as telecommunications, army, medicine, Aerospace, etc. In 2022, the US Geological Survey established a list of 50 CMs, including manganese, cobalt, nickel, aluminum, magnesium, and others. Of the total of CMs, 26 are 100% imported from outside the United States (Venditti, 2022).

Driven by the ever-increasing demand for critical …

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 …

The Effect Of Different Fracturing Fluids On The Productivity Of Multi-Staged Fractured Marcellus Shale Horizontal Wells, Vida Gyaubea Matey-Korley

Graduate Theses, Dissertations, and Problem Reports (ETD)

While hydraulic fracturing has undeniably improved the production from oil and gas reservoirs, this technology is not without limitations. The primary hurdles lie in the areas of proppant transport, fluid rheology, and stress management. Despite the extensive research conducted in this domain, there remains a considerable amount of work to be done for comprehensive solutions that account for the complex interactions among fracturing fluid, proppant distribution, and geomechanical conditions. Achieving this will then make room for a holistic and efficient hydraulic fracturing strategy.

This study addresses the above-mentioned problem by examining the impact of fluid type on proppant transport and …

Leveraging Artificial Intelligence And Geomechanical Data For Accurate Shear Stress Prediction In Co2 Sequestration Within Saline Aquifers (Smart Proxy Modeling), Munirah Alawadh

Graduate Theses, Dissertations, and Problem Reports (ETD)

This research builds upon the success of a previous project that used a Smart Proxy Model (SPM) to predict pressure and saturation in Carbon Capture and Storage (CCS) operations into saline aquifers. The Smart Proxy Model is a data-driven machine learning model that can replicate the output of a sophisticated numerical simulation model for each time step in a short amount of time, using Artificial Intelligence (AI) and large volumes of subsurface data. This study aims to develop the Smart Proxy Model further by incorporating geomechanical datadriven techniques to predict shear stress by using a neural network, specifically through supervised …

Application Of The Flowing Material Balance To Unconventional Gas Reservoirs, Amanda Jo Parrish

Graduate Theses, Dissertations, and Problem Reports (ETD)

In the realm of conventional reservoirs, the estimation of Original Gas-in-Place (OGIP) has long been established using traditional material balance method. However, the emergence of unconventional shale reservoirs accessed through horizontal well and hydraulic fracturing presents new challenges for estimation OGIP by the traditional material balance. The flowing material balance (FMB) has the potential to provide an estimate of the OGIP in the stimulated reservoir volume (SRV).

Adsorption of hydrocarbons to the organic matter within the shale rock matrix represents a significant component of the overall OGIP. The inclusion of the Langmuir volume and pressure in the material balance equation …

Application Of Computational Biophysics Techniques To Characterize Cell Membrane-Associated Events, Kyle Billings

Graduate Theses, Dissertations, and Problem Reports (ETD)

Cell membranes are crowded environments which can modulate protein structure-function relationships through interaction with lipids, other proteins, carbohydrate structures and so on. This work focuses the impact of the membrane environment on two varieties of peptides: Microbial rhodopsin proteins, and cyclic peptides.

Life on Earth is dependent on the ability of plants and microbes to harness sunlight for energy production. Their ability to transform light into carbohydrates requires tailor-made machinery, and for a wealth of microorganisms, microbial rhodopsin proteins (MR) are critical for maintaining the concentration gradients used to produce the energy molecule Adenosine triphosphate (ATP). The central retinal molecule …

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 …

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 …

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 …

Predictions Of Produced Water Quality And Recycled Water Optimization For Spatially-Distributed Wells In Point Pleasant Formation, Armel Quentin Mbakop

Graduate Theses, Dissertations, and Problem Reports (ETD)

The treatment of produced water as a fracturing fluid is becoming an increasingly important aspect of water management surrounding the booming of the unconventional oil and gas industry. Two main problems facing the oil and gas industry are the availability of water for well drilling and completion and disposal of the produced water. Unconventional well drilling and completion in the Utica shale requires large amounts of water. The wastewater that results after production—containing high levels of organic and inorganic matter— is usually disposed of through deep well injection. A new approach reuses this produced water as part of subsequent fracturing …