422 Works

An Electrochemical-Mechanical Investigation of Next Generation Lithium Metal Electrode and Solid Electrolyte

Andrew Meyer
Lithium-ion batteries (LIBs) are a staple in today’s society. From our cellphones, laptops, power tools, the ever-growing electric vehicle, and many more application, LIBs are more important to us than most realize. They provide the best combination of both high-energy and high-power density compared to other battery types such as Ni-Cd, Ni-MH, or the lead acid batteries used in our cars. Plus, LIBs are much safer. However, as new technologies grow and are developed, the...

DEVELOPMENT OF UNIVARIATE AND MULTIVARIATE FORECASTING MODELS FOR METHANE GAS EMISSIONS IN UNDERGROUND COAL MINES

Juan Diaz
Methane gas management continues to be a challenge concerning underground coal mine safety and productivity worldwide despite the extraordinary effort of the mining industry, governmental agencies, and academia to develop new technologies to monitor and control methane gas emissions more efficiently. The risk of hazardous methane gas concentrations in underground environments cannot be underestimated. Statistical data for the last 100 years indicate that around 80% of the accidents and 90% of the fatalities in the...

Structural Optimization of Space Transit Vehicle Concept, Hercules

James Rogers
Hercules is a vehicle concept developed by NASA Langley's Vehicle Analysis Branch to satisfy the need for sustainable transit between Earth, the moon, and Mars. Hercules features unprecedented abort capabilities and mission flexibility to aid in NASA's Mars campaign. By utilizing modern software to perform structural analysis and optimization for a large selection of stiffened panel concepts, beam concepts, and materials trends in the structural optimization emerge. These trends will be invaluable for the design...

Modeling Human Control Behavior in Command-following Tasks

Sajad Koushkbaghi
Humans interact with a variety of complex dynamic systems on a daily basis. However, they are often the lesser understood component of human-in-the-loop (HITL) systems. In this dissertation, we present the results of two HITL experiments to investigate the control strategies that humans use when performing command-following tasks. The first experiment is designed to investigate the control strategies that humans use to interact with nonlinear dynamic systems. Two groups of human subjects interact with a...

Constellations of Strange Bodies: Engaging with the Concept of Mess and its Shifting, Swirling Conditions

Martin Manalansan IV, Jed DeBruin, Lee Mandelo & Sydney Mullins

Translating Across Difference: Affect, Animal Studies, and Anthropology

Radhika Govindrajan, Qingfei Zhang & Morgan Keith Stewart

“Write Something that Somebody can Use”: Openness, Porosity, and Opportunities for Others to do Their Own Things

Roderick Ferguson, Alessandra Del Brocco & Ivy F. Monroe

Whose Ethics?: Thinking Multispecies Relationships Through the Pandemic Classroom

Dierdra Reber, Erin Koch, Aylin Castro, Jed DeBruin, Kelly Ferguson & Jacob Saindon

FANTASIES OF RACE AND PLACE

Mark Hines
Representations of fantasy settings in roleplaying games often draw upon understandings of the medieval and early Renaissance world. This dynamic often extends to racial politics in such worlds. For the contemporary roleplaying game, this often means that game mechanics are built around race, species, or gender. Often, players interpret such mechanics as a means of bioessentializing race or practicing stereotypes rooted in Eurocentric morality and values. This thesis examines the underlying rhetoric and implicit stakes...

An Automated Framework to Debug System-Level Concurrency Failures

Tarannum Shaila Zaman
The ever-increasing parallelism in computer systems has made software more prone to concurrency failures, causing problems during both pre- and post-development. Debugging concurrent programs is difficult because of the non-deterministic behavior and the specific sequences of interleaving in the execution flow. Debugging is a technique where programmers reproduce the bug, identify the root cause, and then take necessary steps to remove the bug from the system. The failure information may come from the bug reports...

LA REPRESENTACIÓN DE LA MASCULINIDAD EN EL PERSONAJE DEL POLICÍA

Daniel Fonfría-Perera
This research focuses on the type of hegemonic masculinity—a term that has traditionally belonged to a purely sociology domain—exhorted in the works of fiction published and released in Spain in the last two decades, searching for patterns that indicate that a normative type is encouraged. After tracing the different types of hegemonic masculinities that have characterized policemen since the late 30’s, the findings show how the modern notion of masculinity depicted in the works analyzed,...

Batch Normalization Preconditioning for Neural Network Training

Susanna Lange
Batch normalization (BN) is a popular and ubiquitous method in deep learning that has been shown to decrease training time and improve generalization performance of neural networks. Despite its success, BN is not theoretically well understood. It is not suitable for use with very small mini-batch sizes or online learning. In this work, we propose a new method called Batch Normalization Preconditioning (BNP). Instead of applying normalization explicitly through a batch normalization layer as is...

DESCRIBING AND PREDICTING PREPROCEDURAL ANXIETY IN PATIENTS SCHEDULED FOR ADVANCED GASTROINTESTINAL ENDOSCOPY DURING THE COVID-19 PANDEMIC

Dawn Profit
Advanced gastrointestinal endoscopy includes a group of specialized procedures and interventions that are being performed more frequently with little attention given to a patient’s preprocedural anxiety issues. Preprocedural anxiety is an anticipated problem with any surgery or invasive procedure and if sustained or experienced excessively, is associated with negative clinical factors and complications. In the beginning of 2020, the United States was met with a global pandemic caused by the coronavirus SARS-CoV-2, termed COVID-19. There...

Contextualizing Artificial Intelligence

Christopher Grimsley
Artificial intelligence (AI) and other advanced technologies pose new questions for philosophers of science regarding epistemology, science and values, and the history of science. I will address these issues across three essays in this dissertation. The first essay concerns epistemic problems that emerge with existing accounts of scientific explanation when they are applied to deep neural networks (DNNs). Causal explanations in particular, which appear at first to be well suited to the task of explaining...

Investigating Mechanisms of Injury and Intervention in a Novel In Vitro Model of Traumatic Brain Injury in Organotypic Hippocampal Slice Cultures

Julia Jagielo-Miller
Traumatic brain injuries (TBIs) impact millions of individuals each year and can pose long term consequences. Despite numerous attempts, no medication has been approved by the FDA to treat TBIs. The causes of these failed trials are multifaceted, but in part can be attributed to the complex nature of TBIs, as well as a lack of sufficient pre-clinical data. In vitro models of TBI are an important tool to help understand the cellular changes seen...

SOCIAL CONSTRUCTION OF HATE CRIMES IN THE US

Chenghui Zhang
Hate crime is a social construct that is conceptualized and defined through judgments about the meaning of bias and prejudice, as well as the causal link between motivation and criminal act. While the enforcement of federal statutes has extended the protected grounds of hate crime, significant underreporting issues impede the understanding of the actual scale, scope, and severity of hate crimes. The purpose of this dissertation is to investigate what and how incident factors and...

Context Classification of Roadways Using Nationally Available GIS Data

Laura Wright
A Context Classification System based on context attributes of the area surrounding a roadway provides detailed information about the environment of a roadway corridor, while enabling practitioners to cater roadway projects to the community they are within. This study sought to create a system that would automatically classify roadway segments into the correct context, using data sources that are available nationwide. The proposed approach was tested by classifying the roadways in Highway District 7 of...

Investigating the Physical Stability of Amorphous Pharmaceutical Formulations

Travis Jarrells
Amorphous formulations, including amorphous solid dispersions (ASDs), consisting of the active pharmaceutical ingredient (API) intimately mixed in a polymeric matrix, are an attractive formulation approach to improve drug delivery, dissolution, and solubility. However, an amorphous API in an ASD is in a higher energy state compared to the crystalline drug and results in most ASDs being inherently unstable. The polymer helps to stabilize the amorphous drug against crystallization such that the resulting homogenous mixture maintains...

The Hybrid Teacher:

Mary Joy Nelson
The world of professional vocal training is becoming more and more eclectic and demanding in the United States. Academic music programs, and subsequently, vocal and vocal pedagogy programs are still predominantly classical in 2022, due to the American university system’s historical roots. In the 21st century, the commercial music industry is at an all-time high. However, in contemporary academia, vocal and vocal pedagogy degree programs remain primarily classical. In recent years, voice professionals have been...

DEMAND ANALYSIS OF VIETNAMESE COFFEE IN THE U.S.

Leo Zin
Coffee production in Vietnam has increased almost 100-fold within the past three decades, positioning it to become the second-largest coffee exporter in the world after Brazil. The U.S. is a top market for Vietnamese coffee. In this study, we estimate a conditional demand system of expenditure share equations for coffee from Vietnam, Brazil, Colombia, and an aggregate of seven other countries in the U.S. coffee market using the Linear Approximation Almost Ideal Demand System (LA/AIDS)...

The Ecology and Evolution of Human Reproductive Behavior

Kaylynne Glover
The complexity of human reproductive behavior has necessitated its examination through a variety of scientific disciplines, each focusing on specific elements of our biology, behavior, and society. However, this complexity also necessitates that we reintegrate the information learned from each discipline into a single framework, one rooted in the evolutionary principles that have shaped the development of all life on earth. In this dissertation, I use this framework to explore human reproductive behavior, with a...

First Steps in the Small-Scale Structure Formation in the Universe

da bi
Galactic morphology in the contemporary universe results from the convergence of a long list of physical processes, not all of them yet fully understood and quantified. The universe exhibits a hierarchical structure: galaxies grow being immersed in dark matter (DM) halos, which in turn are fed by diffuse and filamentary accretion. I use a suite of very high-resolution zoom-in cosmological simulations of galaxies in order to study the assembly of galaxies at high redshifts, z...

EVALUATION OF PRESCHOOL LIFE SKILLS (PLS) PROGRAM TO TEACH SOCIAL SKILLS IN A PRESCHOOL CLASS

Zhenying Jiang
The purpose of the study was to evaluate the effectiveness of a Tier 2 PLS program on increasing critical social skills (i.e., requesting for attention, framed requesting for materials and assistant, and delay and denial tolerance) and decreasing problem behaviors for the participants with risk of delay in social domain. A multiple probe across behaviors design replicated across participants was employed. The intervention terminated due to the end of school year before skill 3 could...

The Role of Protein Tyrosine Phosphatase Receptor Type F in intestinal homeostasis and colorectal cancer

Ashley Skaggs
Protein phosphorylation defines one of the most important regulatory mechanisms in cell signaling. PTPRF, protein tyrosine phosphatase receptor type F, belongs to the class I R2A subfamily of protein tyrosine phosphatases (PTP). The overall objective of this dissertation is to investigate the molecular mechanisms by which PTPRF regulates normal and cancer stem cells by controlling Wnt signaling. Dysregulation of Wnt signaling promotes the initiation and progression of colorectal cancer (CRC). We first determined the functional...

FORWARD-LOOKING DISCLOSURES AND ACCOUNTING INFORMATION IN EQUITY CROWDFUNDING FIRMS

Evisa Bogdani
Forward-looking disclosures (FLDs) play a critical role in traditional capital markets. However, evidence of their usefulness in settings with weak information environments, little to no operating history, nonprofessional investors, and lighter regulation is limited. This study sheds light on this critical issue and finds that FLDs are useful disclosures for raising capital in equity crowdfunding (ECF), and the presence of accounting information enhances FLDs relevance. I find that firms disclosing more FLDs raise more capital...

Registration Year

  • 2022
    422

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Affiliations

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