Digital Commons Network^™

Fabrication Of Solid Oxide Fuel Cell Components Using Stereolithography 3d Printing, Hannah Dyer

Mechanical & Aerospace Engineering Theses & Dissertations

Transitioning from fossil fuel supplied energy to renewable technology must meet cost efficient parameters throughout the manufacturing process while possessing the characteristics of a functioning and reliable power source. With a significant demand in renewable energy products, developmental techniques require adaptive approaches and procedures for novel materials in the manufacturing phase. This report proposes how a solid oxide fuel cell (SOFC), a renewable energy system, can employ additive manufacturing for directly 3D printing its components by utilizing stereolithography (SLA) 3D printing techniques. Fabrication of the printed components from the mixtures were first mixed with varying concentrations of ceramic powder and …

Determining The Degree To Which Ideational Behavior Predicts Occupational Identity Achievement In Emerging Adult College Students Preceding Entry Into The Fourth Industrial Revolution Workforce, Carrington M. Faulk

STEMPS Theses & Dissertations

As emerging adults transition into the Fourth Industrial Revolution (4IR) workforce, it is essential to understand the factors that predict successful occupational identity achievement, as automation will impact human occupational identity crises. This descriptive cross-sectional study implemented a correlation design to determine the degree to which ideational behavior predicts occupational identity achievement preceding entry into the 4IR workforce. Using a sample of 166 emerging adult college students from a Mid-Atlantic, diverse, four-year university, data were collected using Runco’s Ideational Behavior Scale (RIBS) and Melgosa’s Occupational Identity Achievement subscale (OIA). Results showed that ideational behavior significantly predicted occupational identity achievement ( …

The “Made In Egypt” Label Effect On Egyptian Consumers’ Purchase Intention, Mirna Ibrahim Khela

Theses and Dissertations

This study employed a survey to investigate the Country of origin (COO) effect of the “Made in Egypt” label on Egyptian consumers’ purchase intentions of products and services. By using the conjoint analysis, the study was able to test the purchase intention process. The study tested high durability, low durability, and service industry, with attributes (price, specs, and COO) and levels (within attributes). Respondents were given several combinations of those attributes and levels through the survey design. They were asked to trade off the least important attributes for the most important ones to reach a final purchase decision. Previous studies …

The Manito Topos Project: Place Naming And Toponymic Silencing In The Sierras Of Northern Nuevo México And Southern Colorado, Len N. Beké

Spanish and Portuguese ETDs

This dissertation reports on documentary research on vernacular toponymies in Manito communities in Nuevo México and Colorado. These toponymies are erased, obscured and delegitimized in official maps. Within the study area, vernacular antecedents for 49.5% of official names for natural features were documented, along with 280 previously unmapped names. These data were compared to the state-sanctioned toponymy to determine a typology of linguistic mechanisms of toponymic silencing. While a majority of official toponyms are based on Manito oral tradition, only 15.4% of the labels for natural features represent unaltered versions of names in that tradition. This dissertation theorizes the conceptual …

Evidence Against Routine Use Of Glucagon For Prostate Mri, Steven C. Eberhardt

Radiology Research and Scholarship

No abstract provided.

Blood Pressure Classification Status In Children With Ckd Following Adoption Of The 2017 American Academy Of Pediatrics Guideline, Derek K. Ng, Megan K. Carroll, Susan L. Furth, Bradley A. Warady, Joseph T. Flynn, Sahar Fathallah-Shaykh, Anjali Nayak, Martin Turman, Tom Blydt-Hansen, Cynthia Wong, Steve Alexander, Ora Yadin, Elizabeth Ingulli, Robert Mak, Cheryl Sanchez-Kazi, Asha Moudgil, Caroline Gluck, Carolyn Abitbol, Marissa Defrietas, Chryso Katsoufix, Wacharee Seeherunvong, Larry Greenbaum, Lyndsay Harshman, Craig Langman, H Ann & Robert, Sonia Krishnan, Amy Wilson, Stefan Kiessling, Margaret Murphy, Siddharth Shah, Janice Sullivan, Sushil Gupta, Samir El-Dahr, Nancy Rodig, Allison Dart, Meredith Atkinson, Arlene Gerson, Tej Matoo, Zubin Modi, Alejandro Quiroga, Bradley Warady, Rebecca Johnson, Vikas Dharnidharka, Stephen Hooper, Susan Massengill, Liliana Gomez-Mendez, Matthew Hand, Joann Carlson, Hanan Tawadrous, Craig Wong, Frederick Kaskel, Shlomo Shinnar, Jeffrey Saland, Marc Lande, George Schwartz, Anil Mongia, Donna Claes, Mark Mitsnefes, Katherine Dell, Hiren Patel, Pascale Lane, Rulan Parekh, Amira Al-Uzri, Kelsey Richardson, Larry Copelovitch, Elaine Ku, Joshua Samuels, Poyyapakkam Srivaths, Samhar Al-Akash, Patricia Seo-Mayer, Victoria Norwood, Cynthia Pan, Sharon Bartosh

Pediatrics Research and Scholarship

Accurate detection of hypertension is crucial for clinical management of pediatric chronic kidney disease (CKD). The 2017 American Academy of Pediatrics (AAP) clinical practice guideline for childhood hypertension included new normative blood pressure (BP) values and revised definitions of BP categories. In this study, we examined the effect of applying the AAP guideline’s normative data and definitions to the Chronic Kidney Disease in Children (CKiD) cohort compared with use of normative data and definitions from the 2004 Fourth Report on the Diagnosis, Evaluation, and Treatment of High Blood Pressure in Children and Adolescents.

Heterogeneity Of Treatment Effects Of Hydrocortisone By Risk Of Bronchopulmonary Dysplasia Or Death Among Extremely Preterm Infants In The National Institute Of Child Health And Human Development Neonatal Research Network Trial: A Secondary Analysis Of A Randomized Clinical Trial, Samuel J. Gentle, Matthew A. Rysavy, Lei Li, Matthew M. Laughon, Ravi M. Patel, Erik A. Jensen, Susan Hintz, Namasivayam Ambalavanan, Waldemar A. Carlo, Kristi Watterberg, National Institute Of Child Health And Human Development Neonatal Research Network

Pediatrics Research and Scholarship

IMPORTANCE: Extremely preterm infants who develop bronchopulmonary dysplasia (BPD) are at a higher risk for adverse pulmonary and neurodevelopmental outcomes. In the National Institute of Child Health and Human Development Neonatal Research Network (NICHD NRN) Hydrocortisone Trial, hydrocortisone neither reduced rates of BPD or death nor increased rates of neurodevelopmental impairment (NDI) or death.

OBJECTIVE: To determine whether estimated risk for grades 2 to 3 BPD or death is associated with the effect of hydrocortisone on the composite outcomes of (1) grades 2 to 3 BPD or death and (2) moderate or severe NDI or death.

DESIGN, SETTING, AND PARTICIPANTS: …

Assessment Of Corticosteroid Therapy And Death Or Disability According To Pretreatment Risk Of Death Or Bronchopulmonary Dysplasia In Extremely Preterm Infants, Erik A. Jensen, Laura Elizabeth Wiener, Matthew A. Rysavy, Kevin C. Dysart, Marie G. Gantz, Eric C. Eichenwald, Rachel G. Greenberg, Heidi M. Harmon, Matthew M. Laughon, Kristi L. Watterberg, Michele C. Walsh, Bradley A. Yoder, Scott A. Lorch, Sara B. Demauro, Eunice Kennedy Shriver National Institute Of Child Health And Human Development Neonatal Research Network

Pediatrics Research and Scholarship

IMPORTANCE: Meta-analyses suggest that corticosteroids may be associated with increased survival without cerebral palsy in infants at high risk of bronchopulmonary dysplasia (BPD) but are associated with adverse neurologic outcomes in low-risk infants. Whether this association exists in contemporary practice is uncertain because most randomized clinical trials administered corticosteroids earlier and at higher doses than currently recommended.

OBJECTIVE: To evaluate whether the pretreatment risk of death or grade 2 or 3 BPD at 36 weeks' postmenstrual age modified the association between postnatal corticosteroid therapy and death or disability at 2 years' corrected age in extremely preterm infants.

DESIGN, SETTING, AND …

Alveolar Rhabdomyosarcoma Has Superior Response Rates To Vinorelbine Compared To Embryonal Rhabdomyosarcoma In Patients With Relapsed/Refractory Disease: A Meta-Analysis, Wendy Allen-Rhoades, Philip J. Lupo, Michael E. Scheurer, Yueh-Yun Chi, John F. Kuttesch, Rajkumar Venkatramani, William H. Meyer, Leo Mascarenhas

Pediatrics Research and Scholarship

BACKGROUND: Patients with alveolar rhabdomyosarcoma (ARMS) have inferior outcomes compared to patients with embryonal rhabdomyosarcoma (ERMS) and more effective chemotherapy options are needed for these patients. Vinorelbine is a semisynthetic vinca alkaloid that has clinical activity in relapsed rhabdomyosarcoma (RMS) when used alone or in combination with cyclophosphamide.

AIMS: The goal of our study was to evaluate whether RMS histology subtype influences response rate to vinorelbine alone or in combination.

MATERIALS & METHODS: Five Phase 2 trials that enrolled RMS patients were included in the meta-analysis. Two studies evaluated vinorelbine alone, two studies evaluated vinorelbine in combination with low dose …

The Quantum Computational Utility Of Symmetry-Protected Topological Order: From Near-Term Advantages To Universal Measurement-Based Quantum Computing, Austin Kevin Daniel

Physics & Astronomy ETDs

Quantum computers offer new avenues to approach difficult problems by taking advantage of the strange and often nonintuitive phenomena present in quantum physics. Though many quantum algorithms are believed or known to outperform the best known classical algorithms, the fundamental mechanism granting them their power remains elusive. In measurement-based quantum computation (MBQC), two key resources have been show to enable universal and provably nonclassical quantum computations, respectively. These are symmetry-protected topological order (SPTO), a notion describing a class of quantum magnets with hidden long-range correlations in their entanglement structure, and quantum contextuality, the fact that a quantum measurement outcome inherently …

Collaborative Approaches To Improving Medical Subject Headings, Violet Fox, Kelleen Maluski

Posters and Presentations

No abstract provided.

Transcriptional Regulation Of Stem Cell Function In The Drosophila Central Nervous System, Amalia S. Parra

Biology ETDs

Development of multicellular organisms depends on coordination of various molecular mechanisms to ensure proper tissue size and structure. This is accomplished through intrinsic and extrinsic cues that regulate cell growth and proliferation both spatially and temporally. These well-coordinated signals are present from early developmental stages and remain active throughout development to ensure tissue structure is appropriate for function. This is particularly important in early cell types that form specialized lineages such as stem cells or those found throughout the body such as epithelia. While much progress has been made in understanding growth regulatory mechanisms, several fundamental aspects remain unknown. This …

20230501_Zines And Za, Kaylee Nauer

HSLIC Blog Post

No abstract provided.

The Development Of Preservice Teachers’ Metacognitive Knowledge And Self-Regulation In Online Learning, Areej Elsayary, Laila Mohebi

All Works

This study investigated the development of preservice teachers’ metacognitive knowledge and self-regulation in online learning using the reflective practice model. The study was conducted during the COVID-19 pandemic when learning moved completely online. The participants were preservice teachers in an early childhood program in the United Arab Emirates (UAE). A sequential mixed-method approach using quantitative and qualitative data was used. The study’s results reveal that preservice teachers were able to develop their metacognitive knowledge and regulation due to their use of the reflective model. The preservice teachers set new goals for themselves to achieve and prepare for their future jobs.

Review Of Pioneer Of Mexican-American Civil Rights: Alonso S. Perales, Rolando Avila

History Faculty Publications

No abstract provided.

Student Barriers To Taking The Fundamentals Of Engineering Exam, Cornelius Walker

All Theses

The primary goal of the thesis was to identify barriers that hinder students from taking the Fundamental of Engineering (FE) exam. The secondary goals were to determine the most prevalent barriers and compare the difference in knowledge about the FE between senior and sophomore students. The FE exam is a computer-based exam with questions based on undergraduate-level courses and is an early step in the process of becoming a professional engineer. Data for the thesis came from interviews and surveys. Interviews were done by twenty seniors, while surveys were given to forty-one senior and eighty-six sophomore civil engineering students. Interviews …

Economic Impact Assessment Of Nature-Based Coastal Resilience Solutions In Charleston. Estimating Local Economic Effects With Algorithm-Based Supporting Tool., Oksana Veselkova

All Theses

Coastal cities are at the forefront of the risks induced by climate change. Local communities are adversely affected, but the essential cultural assets and economies are also at risk of damage or destruction. In the efforts to limit hazard risk exposure, local governments are increasingly planning for long-term flood protection. One prospective flood risk mitigation measure is living shorelines or nature-based adaptation. The coastal ecosystems, such as beaches, wetlands, barrier islands, oyster reefs, and salt marshes, deliver multiple benefits to communities, including recreation, natural resources, freshwater, and carbon sequestration. Moreover, when combined with structural solutions, they can effectively reduce water …

Cohen-Macaulay Properties Of Closed Neighborhood Ideals, Jackson Leaman

All Theses

This thesis investigates Cohen-Macaulay properties of squarefree monomial ideals, which is an important line of inquiry in the field of combinatorial commutative algebra. A famous example of this is Villareal’s edge ideal [11]: given a finite simple graph G with vertices x1, . . . , xn, the edge ideal of G is generated by all the monomials of the form xixj where xi and xj are adjacent in G. Villareal’s characterization of Cohen-Macaulay edge ideals associated to trees is an often-cited result in the literature. This was extended to chordal and bipartite graphs by Herzog, Hibi, and Zheng in …

Politics, Players, And Legislation In The California Housing Crisis, Andy Daly

All Theses

California has faced a statewide housing shortage for three decades, particularly in exclusive job-rich cities that are becoming increasingly unaffordable. In response, the state has passed pro-housing legislation that bypasses local zoning regulations, focusing on increasing the construction of affordable housing units. I conducted a convergent content analysis of over 80 articles and eight expert interviews. I found that state-led housing legislation is most effective when politicians align their messaging with other pressing issues, such as climate change, transit, and homelessness. Even if bills are rejected, progress is made by opening conversations about the importance of density and housing affordability. …

Charleston, Sc Boarding Houses 1840-1880: Prevalence, Placement, And Character, Holly Adington

All Theses

While it is well known that boarding was a widely used practice in growing urban centers of the United States such as Boston and New York City during the nineteenth century. Boarding has not garnered the same level of attention in rapidly expanding Southern cities during this time. This is partially due to the delayed industrialization of the South. However, industrialization did occur in cities such as Charleston, South Carolina, and the increasing number of workers flooding into the city meant boarding became an attractive solution. The purpose of this thesis is to add to the basic understanding of the …

Gaslight: Attacking Hard-Label Black-Box Classifiers Via Deep Reinforcement Learning, Rajat Sethi

All Theses

Through artificial intelligence, algorithms can classify arrays of data, such as images or videos, into a predefined set of categories. With enough labeled data, a classifier can analyze an input’s components and calculate confidence scores for each category. However, machine learning relies heavily on approximation, which allows attackers to exploit classifiers by providing adversarial
examples. Specifically, attackers can modify their input so that the victim classifier cannot correctly label it, while a human observer would be unable to notice the difference.
This thesis proposes Gaslight, a system that uses deep reinforcement learning to generate adversarial examples against a victim classifier. …

Prey Preference Of Chrysoperla Rufilabris (Burmeister) (Neuroptera: Chrysopidae) For Three Common Pest Species Of Greenhouse Crops, Caitlin Silva

All Theses

Chrysoperla rufilabris (Burmeister) (Neuroptera: Chrysopidae) larvae are voracious generalist predators and important biological control agents on greenhouse crops. This study investigated the prey preference of second-instar C. rufilabris for three common greenhouse pests, namely the twospotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae), the Madeira mealybug, Phenacoccus madeirensis Green (Hemiptera: Pseudococcidae), and the melon aphid, Aphis gossypii Glover (Hemiptera: Aphididae). This study also investigated the influence of prey density ratios on the preference of C. rufilabris larvae for T. urticae and A. gossypii. Prey species preference was evaluated in no-choice, two-choice, and all-choice laboratory bioassays. In the no-choice bioassays, …

An In Vivo Biocompatibility Analysis Of A Novel Tissue Regeneration Matrix Using A Pig Model, Shamar Thomas

All Theses

The goal of this project is to develop an injectable bead scaffold to promote tissue regeneration in the void created by lumpectomy and to alleviate post lumpectomy problems by preventing local recurrence and minimizing surgical-related infections. Microbeads were synthesized from collagen type I and crosslinked with tannic acid to form the basis for this injectable therapeutic. Tannic acid acts as a therapeutic anticancer agent. The action mechanisms of tannins in breast cancer cells have been studied with studies showing tannins to be cytotoxic to cancer cells in a dose-dependent manner. Tannic acid induces apoptosis in breast cancer cells via caspase …

“I Found It Again. My Home.”: The Role Of Art In The Mediation Of Trauma And Loss In Station Eleven, Emily Zhong

All Theses

This project examines the role of the fictional graphic novel – “Station Eleven” – at the center of HBO’s Station Eleven as a form of trauma mediation. The graphic novel serves as a central, physical object in the show through which the characters Miranda, Kirsten, and Tyler process trauma, find comfort, and connect with others. I trace the creation process of “Station Eleven,” from Miranda’s original doodles as a child to the surviving physical copies in the hands of Kirsten and Tyler, exploring how each character engages with the artwork. Situating my analysis within a theoretical framework of contemporary trauma …

Development Of A Novel Fluorescent Reporter Baculovirus Vector For Testing Promoters In Lepidopterans, Daniel Howard

All Theses

Testing gene expression patterns is an important process in learning more about an organism. The standard methods of rtPCR and RNASeq provide highly detailed data on specific expression patterns, but can be resource consuming if many different samples including genes or organisms must be tested. A potential alternative for studying expression is the use of a reporter system carried by a vector system that encodes fluorescent proteins under the control of promoters of interest. Many lepidopterans (moths) are pestiferous and better understanding of gene expression levels in lepidopterans, both endogenous and exogenous including from their viruses, would be beneficial. Baculoviruses …

“I Chose To Look Like This”: Body Modification And Regretting Visibility, Stephen Ross

All Theses

I began collecting tattoos and piercings just after I turned eighteen. As my collection grows and it becomes harder for me to conceal my modifications, I must contend each and every day with the ways in which my body is Othered by my choice to look different. Body modification is self-actualizing for so many, but it can position someone to be stared at, to be physically violated, to be tokenized, or to be vilified. This current project dissects a few key literature areas, from body modification history to the contemporary politics of modification to aesthetic and spectacular philosophy, with the …

Refigured: Separations In Portraiture, Caroline Myers

All Theses

Utilizing traditional painting techniques embedded with digital syntaxes, Refigured: Separations in Portraiture, serves as a catalog of my experiences with communication in a hyperconnected world. Processing illegible information caused by my hearing loss informs the process of imposing similar boundaries within my paintings. Like a technical glitch, these obstructions create an illegible visual experience, with evidence of my process remaining as a clue for the viewer’s understanding of the image.

Though personal in nature, I expand from my experience with auditory communication to employ pertinent explorations into the sustained unpredictability of today’s ever-expanding medium that is technology. My paintings …

Perspective And Perception: How Reddit Trip Reports Convey And Offer Different Knowledges About Psychedelic Drugs, Kevin Lawson Nutt

All Theses

Psychedelics drugs are slowly gaining recognition for their potential medicinal value in therapeutic settings in Western science. However, there remains a great deal of hostility and hesitancy toward psychedelics, largely due to the psychedelics’ collective classification as Schedule I drugs in America, which resulted from a history of the drug class’ demonization. Nonetheless, several US states and cities having decriminalized psychedelic drugs in certain contexts, but the general population is relatively naïve to the potentialities psychedelics can offer. This thesis studies trip reports, which are firsthand accounts of individual psychedelic experiences, on Reddit to shed light on the different knowledges …

Leaders On The Ground: Command Influence On War Crimes In The Armies Of France And The United States, Hayward Hood

All Theses

Utilizing torture during the Battle of Algiers, the My Lai Massacre, and torture at Abu Ghraib as specific case studies, this thesis contends that negligence or dereliction of duty by the brigade, battalion, and company commanders were the primary factors. Additional factors included commanders stressing rapid results, and external stressors in the soldiers’ immediate environment. War crimes are defined as violations of the 1907 Hague Convention which was supported by the 1949 Geneva Protocols, and negligence is defined in the legal sense.1 Contrary to the existing narrative, this thesis contends that lower-level commanders did more to create the conditions required …

Improving Inference Speed Of Perception Systems In Autonomous Unmanned Ground Vehicles, Bradley Selee

All Theses

Autonomous vehicle (AV) development has become one of the largest research challenges in businesses and research institutions. While much research has been done, autonomous driving still requires extensive amounts of research due to its immense, multi-factorial difficulty. Autonomous vehicles rely on many complex systems to function, make accurate decisions, and, above all, provide maximum safety. One of the most crucial components of autonomous driving is the perception system.

The perception system allows the vehicle to identify its surroundings and make accurate, but safe, decisions through the use of computer vision techniques like object detection, image segmentation, and path planning. Due …