Digital Commons Network^™

Advancing Hymenocallis Coronaria Conservation And Restoration For Improved Habitat Management In Fall Line Streams Of The Southeast, Andrew Paul Grunwald

All Theses

The rocky shoals spider lily (Hymenocallis coronaria) is a culturally and ecologically important emergent macrophyte endemic to the biodiverse shoals of fall line streams in the southeastern United States. H. coronaria has declined throughout its range as shoal habitat has become increasingly threatened by flow modification and other anthropogenic stressors. The genetics and botany of H. coronaria have been given considerable attention, but quantitative habitat research has been lacking. Furthermore, despite substantial need, public interest, and its status as an indicator species for fall line streams, no research has been conducted on H. coronaria restoration. Our main objectives …

Design Of A Four Channel Pulsatile Perfusion Bioreactor For Ex-Vivo Study Of Vascular Grafts, Thomas M. Fair

All Theses

Cardiovascular diseases are the leading cause of death in the United States. Atherosclerosis in peripheral arteries is a major contributing factor. Autologous saphenous vein grafts are the most common bypass grafts for treating peripheral artery diseases. A quarter of these grafts fail within a year, and around half have failed within 10 years of the initial surgery. Graft failure is attributed to the development of intimal hyperplasia indicated by the migration and proliferation of vascular smooth muscle cells, fibroblasts, and the deposition of extracellular proteins.

Increases in flow, pressure, the pulse frequency, and the differential of pressure that model an …

Mechanochromic Tunable Emissions Of Hydrogel Encapsulated Radioluminescent Crystalline Colloidal Arrays, Sarah Mell

All Theses

Crystalline colloidal arrays (CCAs) are periodic dielectric arrays composed of monodisperse, negatively charged nanoparticles with unique optical characteristics. Poly(styrene-co-propargyl acrylate) (PS-PA) based copolymer nanoparticles synthesized via an emulsion polymerization form the basis of the CCAs in this work. The negatively charged surfaces result in the colloidal nanoparticles self-assembling into a face-centered cubic (fcc) crystal-like structure. The long-range order and spatial periodicity of the array result in a rejection wavelength, characteristic of CCAs, in which a specific wavelength of light is forbidden from propagating throughout the optical system. The CCAs exhibit mechanochromism through a rejection wavelength shift corresponding to a change …

An Experimental Analysis Of Thin Sheet Metal Bending By Ultrafast Laser Peen Forming, Bryce J. Tessmann

All Theses

This study demonstrates the viability of femtosecond laser peen forming for bidirectional sheet metal bending. Ultrafast laser forming is a valuable method thanks to its flexibility, negation of springback, no need for a confining or protective layer, and minimalization of thermal degradation in comparison to other forming processes. However, femtosecond lasers have traditionally been believed to be unsuitable for laser forming in comparison to nanosecond lasers, particularly bidirectional bending, because the induced shock waves were expected to be weak. Conversely, in this study it is elucidated that the femtosecond laser-induced shock waves are extremely strong (several hundred GPa) but the …

Effect Of Refrigerated Storage On Meat Quality, Jillian Reid Richardson

All Theses

Maintaining meat quality during cold temperature storage is an important goal for increasing consumer satisfaction and reducing food waste. Following a literature review on the importance of cold meat storage, a study was conducted as a part of Electrolux refrigerator research and development. Chicken breast and beef sirloin filets were stored at -2°C, -5°C, and -18°C and monitored for quality changes over a 7-day period. Temperature fluctuations and relative humidity data were monitored automatically by sensors. Meat quality was evaluated by measuring water activity, moisture content, pH, colorimetry, sensory, and drip loss. Microbial plate counts were used to monitor the …

Examining The Different Snap-Through Characteristics Of Bistable Cfrp Composite Laminates, Vishrut Deshpande

All Theses

Bistable carbon fiber composites, whose bistability arises from having asymmetric fiber layouts in different layers, have shown immense potential for use in shape morphing and adaptive structure applications. While many studies in this field focus on these composite laminates’ external shapes at the two stable states, their snap-through behavior of shifting from one stable shape to the other remains a critical aspect to be investigated in complete detail. Moreover, symmetric loading conditions have been extensively studied based on the classical lamination theory, but the asymmetric loading conditions received far less attention. Therefore, this study examines an asymmetric, localized point load …

Physical And Microbiological Characteristics Of Pickled Eggs From Japanese Quail (Coturnix Coturnix Japonica) Of The Pharaoh Variety, Adair Hoover

All Theses

The quality and microbiological characteristics of quail eggs were evaluated after eggs were pickled in different vinegar brine solutions. Pickling food in vinegar is one of the oldest preservation methods; however, little research has been conducted on pickled quail eggs. Commercial quail eggs obtained from a local producer were boiled, peeled, and placed into various pickling solutions and held for 24 or 48 hours at room temperature. After the holding period, eggs were removed from the solutions, weighed, and tested for pH, water activity, texture, and color. A second experiment was conducted to determine the effects of various pickling solutions …

Out Of The Box: Bridging The Long-Distance Gap Between Consumer And Product In Online Experiences By Using Ar To Facilitate A Deeper Connection Through Virtual Try-Ons, Jessica E. Schell

All Theses

As consumers are more and more preferring online experiences to brick-and-mortar shopping, there is a growing need for new and creative marketing strategies that can overcome the physical distance between consumer and product. In this paper, I demonstrate how augmented reality can bridge that gap, allowing consumers to connect with a product in a way that is not possible through traditional online media forms such as images and video. To that end, this paper includes a detailed breakdown of the conception and creation of Out of the Box, an augmented-reality application developed to enable users to virtually interact with …

The Effects Of News Framing On Policy Support For Incarcerated Black Women, Rebecca Pool

All Theses

Mass incarceration has disproportionately affected many people; however, Black women have been routinely dismissed from the majority of prison scholarship and are at a particular risk through harmful stereotypes that serve as justification for their imprisonment. By examining their unique stance in the prison-industrial complex, this thesis draws attention to mechanisms to generate support for these women. Under the framework of framing theory and critical media effects, this research determined whether individual attribution of responsibility frames or societal attribution of responsibility frames affect individuals’ support for anti-mass incarceration public policies. According to the results, there were no effects between Black …

The Impact Of Oversaturation And Corporate Identity On Csr Messages Within The Electric Car Industry, Carla White

All Theses

Rooted in the call for increased electric and zero-emission vehicles, this study aims to analyze the impact of repeated industry-wide Corporate Social Responsibility (CSR) messages on public perception. This research will test the impact of oversaturation on CSR message outcomes according to Hon and Grunig's (1999) organizational-public relationships (OPRs) scale. Additionally, this research will incorporate corporate identity (CI) framework derived from business literature to test CI's influence on CSR messages and OPR outcomes. Participant's overall trust, satisfaction, and commitment towards a company mission statement and various advertisements under differing experimental conditions will determine the effect of both oversaturation and CI …

Cladding By Another Name: A Comparative Analysis Of The Environmental And Economic Costs Of Traditional Wood Clapboards, Composite Fiber-Cement Siding, And Vinyl Siding, Nicole Larochelle

All Theses

Using the tools provides by the scientific community, namely the products of lifecycle cost assessments (LCA) – which are synthesized in environmental product declarations (EPD) – and life cycle cost assessments (LCCA), the overall environmental and economic impacts of historic, traditional, and simulated materials are established and compared. This informs the historic preservation community of the quantifiable sustainability of historic materials in relation to alternatives. Through these two different methods of environmental and economic life cycle costing, this research demonstrates that retaining in-situ siding incurs the least impact on the environment and is the second most economic option. While the …

A Novel Wearable Device For Distributed Sensing Of Elastomeric Strain Gauges, Jacob Read Garland

All Theses

Throughout the past decade, the field of wearable technology has exploded in both consumer and researcher interest, to the point that its market size is anticipated to grow by nearly 150% by 2028 [1]. Sensor-embedded devices such as the Apple Watch, Fitbit, certain smart shoe insoles, and more have become more commonplace in our daily lives. Partially due to the growth of this market, interest in conductive flexible and/or elastic materials has also increased, with fields such as printed electronics, conductive polymers, and elastomers embedded with conductive percolation networks. Although they have made their debut into foldable/rollable screens recently, flexible …

Enabling Breeding For Targeted Heat Requirement In Peach, Omer Atagul

All Theses

Peach [Prunus persica (L.) Batsch] germplasm varies in heat requirement and bloom time. This variability can be utilized in breeding for targeted environment or overall climate resilience. Development of molecular tools to aid in targeted selection of dormancy related traits is needed to support breeding for these traits. This project furthers our understanding of heat requirement accumulation diversity and genetic control in peach.

Peach bloom date (BD) is determined by the dynamic relationship of temperature requirements, from the sequential fulfillment of chill requirement (CR) and heat requirement (HR). Knowledge of HR and its influence on BD would provide deeper …

Paz Y Amor: The Making Of Mexican Hippie Culture, Allie R. Cobb

All Theses

Following the violent government massacre of students in October of 1968, Mexican youth turned away from organized protest and turned on to the likes of Jimi Hendrix and Timothy Leary to challenge established society. This project focuses on Mexican hippie culture and Mexican hippie identity. It argues that hippie culture flourished in Mexico because of the development of consumer society and offered a way for Mexican youth to rebel against traditional authority while feeling a part of an international youth culture and at the same time reshaping what nationalism meant to them. In other words, hippie culture offered youth a …

Unraveling The Genetic Architecture Of Somatic Embryogenesis In Upland Cotton, Adam M. Canal

All Theses

Somatic embryogenesis is the de novo development of asexual embryos because of the plasticity of the plant cell. In tissue culture, the biochemical and genetic mechanisms of dedifferentiated callus tissues can be reprogrammed to transdifferentiate into developed, polarized embryos, which can ultimately regenerate into whole plants. Although this rarely occurs in nature, scientists have exploited this process for decades to regenerate whole plants following gene transformation or for micropropagation. While some species are amenable to in vitro regeneration, upland cotton is particularly recalcitrant, with regenerative potential being confined to only several genotypes. The lack of elite, regenerable genotypes greatly restricts …

U.S. Army Medical Command’S Medical Treatment Facilities’ Response To Sars-Cov-2 (Covid-19), Seyedmohammad Ahmadshahi

All Theses

Starting in December 2019 to the current time in May 2022, COVID-19 was a devastating pandemic with approximately 440 million cases and 6 million deaths worldwide (Centers for Disease Control and Prevention [CDC], 2021). The United States (US) with roughly 90 million cases and 1 million deaths (CDC, 2021) was one of the epicenters of the outbreak since the beginning. The pandemic has significantly impacted the health systems across the US with unpredictable surges of highly infectious patients with uncertain symptomology and acuity levels, requiring isolation and critical level of care (Brambilla et al., 2021).

Based on the findings from …

Rewriting The Narrative That Surrounds Mental Illness, Ashley Johnson

All Theses

The focus of this work is to change the narrative that surrounds mental health issues by portraying mental battles through animation. Buddhism heavily influenced the crux of this project, which is the conscious decision to accept oneself and choose to work towards inner balance instead of battles. 3D animation is used to distill complex thoughts into simplified characters that drive the narrative through performance and choreographed fight scenes.

A Quantitative Comparison Of Algorithmic And Machine Learning Network Flow Throughput Prediction, Cayden Wagner

All Theses

Applications ranging from video meetings, live streaming, video games, autonomous vehicle operations, and algorithmic trading heavily rely on low latency communication to operate optimally. A solution to fully support this growing demand for low latency is called dual-queue active queue management (AQM). Dual-queue AQM's functionality is reduced without network traffic throughput prediction.

Perhaps due to the current popularity of machine learning, there is a trend to adopt machine learning models over traditional algorithmic throughput prediction approaches without empirical support. This study tested the effectiveness of machine learning as compared to time series forecasting algorithms in predicting per-flow network traffic throughput …

Female Portrayal In Games Through Costumes: Designing And Creating Appealing Armor For Female Players, Nancey Fang

All Theses

This thesis details the design, development, and creation of variations of more functional female armor designed for games with the female audience in mind.

The goal is to empower female players by designing and creating strong armor that is not sexualized and that women can enjoy. I want to show that women can be portrayed as strong and powerful in games by designing armor that is equivalent to their male counterparts. Due to the gender imbalance in the video game industry and player base, it seems that female players are not catered to when most games are created. Many studies …

Body Appreciation, Gender, Motivation, And Competitive Success In Competition Climbing, Marissa Frost

All Theses

The focus of this study was to examine the relation between the constructs of body appreciation, gender, motivation, and competitive success in competition climbers. To gather data for this study, a Qualtrics survey was created and distributed amongst the competition climbing community through USA Climbing’s Facebook page and member email list. Data was then collected from competition climbers between the ages of thirteen and sixty over 45 days in the winter of 2017. A total of 236 competition climbers participated in the survey and 202 of those responses were used in this study. Body appreciation in this study was analyzed …

Investigations Of External Resources And The Impact Of Imaging On Patient Flow In The Emergency Department, Marisa Shehan

All Theses

The problems associated with Emergency Department (ED) crowding are numerous, varied, and complex. Though overcrowded Emergency Departments are frequently attributed to overcrowded hospitals, crowding is also impacted by bottlenecks in patient flow. While discrete-event simulation (DES) is commonly used to model ED flow, external resources are typically excluded from these models due to their complexity and the limited amount of known information for these processes. Instead, external resources such as consults, labs, and imaging are modeled using estimation and/or educated guesswork. In this study, the impact of imaging on patient flow was assessed through data analysis of specific imaging factors, …

Soft Web-Based Continuum Robot Grippers, Anthony Carambia

All Theses

We discuss the potential of soft webs to enhance robotic grasping. Specifically, we explore a novel combination of compliant continuum digits interspersed with a flexible material. The resulting webbed structure offers the potential for new modes of robust and adaptive object grasping. We introduce and describe two webbed grippers featuring alternate modes of actuation: pneumatic muscles and remotely actuated tendons. Experiments with the grippers demonstrate their ability to gently capture small, fragile, and non-cooperative objects.

Identification Of Critical Points For Bacterial Contamination In The Microbrewery Environment, Alex Ryan Thompson

All Theses

There are 8,884 craft breweries producing over 23 million barrels of beer in the United States as of 2020. These 23 million barrels of craft beer account for 12.3% of the United States beer consumption in 2020. The American craft beer industry is substantial and needs to protect its product from bacterial contamination.

Overall, beer is a microbially stable product. Beers pH, ethanol levels, CO₂ concentrations, the presence of hop-derived antimicrobial compounds, and low levels of O₂ make beer a highly unfavorable environment for most bacterial species. Furthermore, the brewing process, which involves heat treatments and chemical sanitizers …

A Cross-Cultural Trek Of Nomadism Through Metaphoric Criticism, Gabrielle Wilkosz

All Theses

How has the worldwide phenomenon of nomadism—present day, recent past, and ancient past—been characterized through metaphor by writers, orators, and auteurs? Using metaphoric criticism, I show how the rhetoric of twenty-first-century "van-lifers" builds on a long global history of displacement that ranges from Central Asia to Malaysia to the Grand Canyon. This project’s three case studies span two decades each, comprising the Kitan people of Central Asia (1207-1227); Bukat people of Borneo in Malaysia (1930-1950), and contemporary "van-lifers" of the US (2001-21). This MA thesis parses a newfound connection between the language of nomadism and Burkean “truth”; the language of …

An Exploratory Study On Refactoring Documentation In Issues Handling, Eman Abdullah Alomar, Anthony Peruma, Mohamed Wiem Mkaouer, Christian D. Newman, Ali Ouni

Articles

Understanding the practice of refactoring documentation is of paramount importance in academia and industry. Issue tracking systems are used by most software projects enabling developers, quality assurance, managers, and users to submit feature requests and other tasks such as bug fixing and code review. Although recent studies explored how to document refactoring in commit messages, little is known about how developers describe their refactoring needs in issues. In this study, we aim at exploring developer-reported refactoring changes in issues to better understand what developers consider to be problematic in their code and how they handle it. Our approach relies on …

Code Review Practices For Refactoring Changes: An Empirical Study On Openstack, Mohamed Wiem Mkaouer, Eman Abdullah Alomar, Moatz Chouchen, Ali Ouni

Articles

Modern code review is a widely used technique employed in both industrial and open-source projects to improve software quality, share knowledge, and ensure adherence to coding standards and guidelines. During code review, developers may discuss refactoring activities before merging code changes in the code base. To date, code review has been extensively studied to explore its general challenges, best practices and outcomes, and socio-technical aspects. However, little is known about how refactoring is being reviewed and what developers care about when they review refactored code. Hence, in this work, we present a quantitative and qualitative study to understand what are …

The Extraction Industry In Latin America And The Protection Of Indigenous Land And Natural Resource Rights: From Consultation Toward Free, Prior, And Informed Consent, Kylah Staley

UC Law Journal

Resource extraction and exploitation threaten the survival of Indigenous and tribal peoples, who are amongst the most marginalized communities in the world. This is both a human rights issue and an environmental issue. There are around 300 million people that make up Indigenous communities worldwide, the majority of whom live in forests. Furthermore, Indigenous customary lands contain 80% of the world’s biodiversity. Traditionally, Indigenous communities have been stewards of their lands, where they regard the land as means for their own physical, spiritual, and cultural survival rather than a commodity to be exploited. The only protection Indigenous Peoples have against …

Awakening To Beauty, Volume Viii, University Of Dayton. University Honors Program, Angela Ann Zukowski

Chaminade Scholars: Awakening to Beauty

Images and reflections of the members of the 2023 cohort of Chaminade Scholars. Published in May 2022.

Book Deserts Of Litlandia: A Case Study Of Book Deserts In The Literary City Of Portland, Oregon In Relation To Book Waste From It’S Largest Independent Bookstore, Megan Jessop

Book Publishing Final Research Papers

The goal of this project was to look at book waste from a local independent bookstore, Powell’s Books, in Portland, Oregon and compare local donation and literacy programs—such as Little Free Libraries (LFL), Children’s Book Bank, and programs with the Multnomah County Library (MCL) to see if there were books or print materials that were being thrown away, recycled, and/or turned into pulp that could have been utilized in other ways towards literacy efforts. Through a process of interviews with staff at Portland’s largest local independent bookstore, MCL, a LFL steward, and Children’s Book Bank, as well as analysis of …

Prescribed Burning And Land Functions In The Mixed-Land Use Management Of The Berea College Forest., Hinzee Smith

College of Arts & Sciences Senior Theses

The Berea College Forest is the oldest privately managed forest in Kentucky. Spanning over 9,000 acres, the forest provides opportunities for hiking, timber production, carbon sequestration, education, and much more. The Berea College Forest is uniquely situated as it is mere miles from the town center of Berea and Berea College. This proximity to a concentrated population causes the management of the forest to be observed and experienced by the community members, where accessibility to trails, hosted events, and educational experiences extend the land functions of the managed forest to community members in more direct ways than other publicly managed …