521 Works

Proctoring and Apps in College Algebra

Cynthia M. Shelton
The pandemic forced more instructors and students to move to online learning. For the first time, many experienced a loosening of the reigns and were forced to allow students to submit non-proctored work. Many may have questioned what students really learned in the year 2020. Many college math course competencies emphasize procedures. Now that apps can do that for students, where does that leave math instructors? Additionally, online instruction has exploded over the last decade...

An Experimental Investigation of Auditors' Evidence Evaluation and Work Ownership in a Compartmentalized Test of Details Setting

Christopher Pearson
Psychological ownership theory suggests that auditors are more likely to exert effort when they feel a sense of personal ownership of the audit. Ongoing trends towards a more compartmentalized and decentralized audit, however, may impair auditors’ work ownership by decreasing their interaction with work, as well as by discouraging engagement with work performed by colleagues. In two experiments, I test the effects of audit work compartmentalization, where I consider whether auditors’ evaluation of evidence is...

Multivariate Statistical Modeling for Radio-genomics Study

Tiantian Zeng
Radiogenomics is a new direction in cancer research that focuses on the associations among radiomics, genomics and clinical outcome. Currently, the major challenge for Radiogenomics lies in the effective integration of genomics and imaging data for promising clinical outcome prediction. Herein, we propose a multivariate joint model that can integrate imaging and genomic data for better predicting the clinical outcome. Specifically, we jointly consider two multivariate group lasso models, one regresses imaging features on genomic...

COMMUNICATING INDIVIDUAL AND COLLECTIVE MINDFULNESS

Leanna Hartsough
Since the COVID-19 pandemic, many organizations made workplace changes, which added an additional challenge to employees’ communication. However, mindfulness may help members strengthen their workplace interactions. Mindfulness is an intentional open awareness to the present moment (Shapiro, 2009). The theoretical framework of collective mindfulness includes organizational mindfulness, which is mindfulness from a top-down approach and mindful organizing, which is a bottom-up approach to mindfulness at work. This dissertation extends research on collective mindfulness by including...

Accuracy and Uncertainty in Traffic and Transit Ridership Forecasts

Jawad Mahmud Hoque
Investments of public dollars on highway and transit infrastructure are influenced by the anticipated demands for highways and public transportations or traffic and transit ridership forecasts. The purpose of this study is to understand the accuracy of road traffic forecasts and transit ridership forecasts, to identify the factors that affect their accuracy, and to develop a method to estimate the uncertainty inherent in those forecasts. In addition, this research investigates the pre-pandemic decline in transit...

MASS SPECTROMETRIC ANALYSIS OF LIGNIN MODEL COMPOUNDS

Kimberly Dean
Lignocellulosic biomass is pivotal for the development of renewable energy sources and materials essential to mitigate the exploitation of fossil fuels causing climate change and environmental pollution issues. The conversion of biomass into fuel requires the hydrolysis of cellulose and a biproduct of this process is the isolation of millions of tons of lignin as biorefinery waste. Lignin is a complex high molecular weight polymer whose structure remains undefined and critically limits potential industrial applications...

FIRM PERFORMANCE AMIDST TOP MANAGEMENT TEAM PARTICIPATION IN THE BOARD NETWORK

Jyoti P. Gupta
Research streams within the literature on boards of directors have included topics such as the composition and interlocks of boards for firm performance. In these studies, top management team director roles are often limited to those categorized as inside directors in the firm. Rarely studied are top management team ties within the board and top management team corporate network, their structural position in the network, and the associated firm performance for the company where the...

CONSTRUCTING A CULTURAL BRIDGE

Michael De Sousa
In the period following World War II, countries such as Japan, Vietnam, and Thailand were under constant intellectual bombardment from global superpowers vying for political influence. West Germany, a newly established ally of Western democracy, was a small part of a global effort to spread this democracy to Asia. Working alongside Joachim-Ernst Berendt and the Goethe Institute, the jazz trombonist Albert Mangelsdorff arranged an album which sought to merge both Western European and Asian music....

The v1-Periodic Region in Complex Motivic Ext And a Real Motivic v1-Selfmap

Ang Li
My thesis work consists of two main projects with some connections. In the first project we establish a v1 periodicity theorem in Ext over the complex motivic Steenrod algebra. The element h1 of Ext, which detects the homotopy class \eta in the motivic Adams spectral sequence, is non-nilpotent and therefore generates h1-towers. Our result is that, apart from these h1-towers, v1 periodicity operators give isomorphisms in a range near the top of the Adams chart....

Implementation of Physical Activity in Kentucky Public Schools

Elise Kearns
Physical activity in schools improves academic performance and fitness measures in children. However, state policy supporting implementation of physical activity remains poor. Identifying specific barriers to implementing physical activity minutes in Kentucky public schools is pivotal in preserving the cognitive and physical health of our children. This is of particular interest as physical activity minutes remain low despite the positive effects of exercise on cognition. The purpose of this dissertation is to provide policymakers and...

Statistical Theory for Specialized Linear Regression Adjustment Methods compared to Multiple Linear Regression in the Presence and Absence of Interaction Effects

Leon Su
When building models to investigate outcomes and variables of interest, researchers often want to adjust for other variables. There is a variety of ways that these adjustments are performed. In this work, we will consider four approaches to adjustment utilized by researchers in various fields. We will compare the efficacy of these methods to what we call the ”true model method”, fitting a multiple linear regression model in which adjustment variables are model covariates. Our...

Deriving the Distributions and Developing Methods of Inference for R2-type Measures, with Applications to Big Data Analysis

Gregory Hawk
As computing capabilities and cloud-enhanced data sharing has accelerated exponentially in the 21st century, our access to Big Data has revolutionized the way we see data around the world, from healthcare to investments to manufacturing to retail and supply-chain. In many areas of research, however, the cost of obtaining each data point makes more than just a few observations impossible. While machine learning and artificial intelligence (AI) are improving our ability to make predictions from...

ASSESSING STRESS BIOMARKERS AS EMBODIED IDENTITY IN KENTUCKY’S GREEN RIVER ARCHAIC

Anna-Marie Casserly
The primary goal of this bioarchaeology dissertation research is to investigate the relationship between evidence of social identity and indicators of biological stress in the Green River region of Kentucky during the Late Archaic period (5,000-3,000 BP). Utilizing a biocultural perspective, I examine the ways that aspects of identity and social organization are embodied through the experience of biological stress. This research explores how social differences influence the patterning of osteological stress markers in an...

Supporting Stylized Language Models Using Multi-Modality Features

Chengxi Li
As AI and machine learning systems become more common in our everyday lives, there is an increased desire to construct systems that are able to seamlessly interact and communicate with humans. This typically means creating systems that are able to communicate with humans via natural language. Given the variance of natural language, this can be a very challenging task. In this thesis, I explored the topic of humanlike language generation in the context of stylized...

The Power of Connections

Jeri Heileman
A positive doctoral experience is rooted in an understanding of the expectations and reality of doctoral–level work. Students need specific knowledge, skills, and mindsets to complete coursework, critically analyze research, and write and defend a research dissertation. Despite a mutual commitment to academic achievement and graduation by faculty and students, attrition in doctoral programs remains high. This rate is even higher for those in online programs. Additionally, there are many challenges doctoral students experience outside...

THE INFLUENCE OF LINGUISTIC STYLE: A MATCHED-GUISE EXPERIMENT ASSESSING THE EFFECTS OF SOURCE ACCENT, ARGUMENT QUALITY, AND ISSUE INVOLVEMENT ON PERSUASION

Sean Goatley-Soan
For decades, persuasion researchers have demonstrated that under certain conditions, the success of a persuasive appeal depends, at least in part, on perceptions of a source (Petty & Cacioppo, 1986; Wilson & Sherrell, 1993). In the same way, a person’s linguistic style, such as their accent, has been shown to have a powerful impact on listeners’ judgments (Dragojevic et al., 2018). However, despite many real-world persuasive settings requiring an oral component, the impact of a...

A Multidisciplinary Characterization of the Enzymology and Biology of Reversible Glucan Phosphorylation in Toxoplasma gondii

Robert Murphy
Toxoplasma gondii is an opportunistic, protozoan parasite of all warm-blooded animals, infecting roughly one-third of humans worldwide. Humans acquire infections by consuming T. gondii tissue cysts in undercooked meat or from oocysts shed in cat feces. Encysted parasites convert into rapidly growing tachyzoites that disseminate throughout the body, defining the acute phase of infection. Under host immune pressure, tachyzoites convert into bradyzoites that populate tissue cysts found in CNS or muscle tissue and persist for...

KNITTING CODE

Emily Dodson-Snowden
Due to the rise of careers in STEM-related fields, there is a growing need for schools to produce people to fill these positions. One area of STEM that is growing is computer science/coding. Due to this demand, schools need to be intentional about exposing students to computer science/coding. There are a variety of new tools to introduce students to this field. One growing belief is that knitting can teach computer science/coding to students. The goal...

DEVELOPMENTS IN GOLD(III) SCAFFOLDS FOR PROTEIN BIOCONJUGATION AND ENHANCED ANTICANCER ACTIVITY

Sailajah Gukathasan
Site-selective modifications of target proteins using specially designed small molecules is a powerful tool that has been extensively utilized in biomedicine. Small molecules can modify proteins either covalently or non-covalently depending on their structures and intrinsic chemical reactivity. Covalent chemical modification presents a more stable and often irreversible interaction with target proteins; unlike non-covalent binders, which form weak, reversible interactions with protein. Therefore, covalent modifiers represent an effective class of therapeutics due to their stability...

Is This Going to Be the End?

Audrey Smith Bachman
Colorectal cancer (CRC) is preventable through regular screening; however, incidence and mortality rates in Appalachia are among the highest in the United States. Public health programs and interventions meant to mitigate the higher CRC burden and increase screening rates are ongoing in the U.S. and Appalachia. In continuing the efforts to reduce the burden of CRC in Appalachian communities, this dissertation uses a two-part study to investigate communication practices relative to problematic integration and health...

Geometric Properties of Weighted Projective Space Simplices

Derek Hanely
A long-standing conjecture in geometric combinatorics entails the interplay between three properties of lattice polytopes: reflexivity, the integer decomposition property (IDP), and the unimodality of Ehrhart h*-vectors. Motivated by this conjecture, this dissertation explores geometric properties of weighted projective space simplices, a class of lattice simplices related to weighted projective spaces. In the first part of this dissertation, we are interested in which IDP reflexive lattice polytopes admit regular unimodular triangulations. Let Delta(1,q)denote the simplex...

SYNTHESIS AND IN SITU CHARACTERIZATION OF INTERCALATED TRANSITION METAL OXIDE NANOMATERIALS INVESTIGATED FOR NOVEL CATHODE APPLICATIONS

Ahamed Ullah
To develop an effective battery cathode material that can be useful for future batteries, the thermal stability and ion diffusion dynamics need to be well understood. In situ transmission electron microscopy (TEM) is a popular and proven technique to study the evolution of local structures during the dynamic processes in the cathode materials. This dissertation will demonstrate the application of high-resolution imaging and in situ heating and biasing in the TEM to study the structure...

EFFICACY OF PREBIOTIC DIETARY INTERVENTION TO MITIGATE RISKS FOR DEMENTIA VIA THE GUT-BRAIN AXIS

Lucille Yanckello
Alzheimer’s disease (AD) is the most common form of dementia with various risk factors including age, environmental factors such as brain injury and genetic factors, such as the E4 allele of the Apolipoprotein gene. Presence of the APOE4 allele increases AD risk by two- to four- fold. Recent studies have shown that mild traumatic brain injury (mTBI), even without loss of consciousness, increases risk of dementia diagnosis by more than two-fold in military personnel and...

MECHANISTIC STUDIES OF OXIDATIVE PROCESSING OF PHENOLIC COMPOUNDS AT ATMOSPHERIC INTERFACES

Md. Sohel Rana
The Earth’s atmosphere is a multicomponent system comprising gases, aerosols, and clouds, and their interaction with sunlight impacts radiative forcing. Biomass burning and anthropogenic emissions release volatile phenolic compounds to the atmosphere, where they can undergo chemical oxidation and photochemical aging, providing precursors for the formation of secondary organic aerosol. This dissertation ensembles laboratory studies of oxidative processing of a group of representative phenolic compounds by O3, hydroxyl radical (HO), and nitrate radical (NO3) at...

THE INFLUENCE OF THE FEDERALIST SOCIETY ON JUDICAL POLITICS AND LAW IN THE UNITED STATES

Peter Lynch
This dissertation examines the Federalist Society, which is a network of conservative and libertarian attorneys, judges, law professors, and law students. The organization was founded by law students at Harvard Law School, Yale Law School, and the University of Chicago Law School in 1982, and has, over the last four decades, come to play a central role in law and politics in the United States. Individuals affiliated with the Federalist Society influence the law through...

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