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College Athletes As Defendants In Rape Trials: The Impact On Legal Decision-Making, Sophia Salyers Jan 2023

College Athletes As Defendants In Rape Trials: The Impact On Legal Decision-Making, Sophia Salyers

Lewis Honors College Thesis Collection

The issue of rape continues to be of concern in the United States. Rape is defined as any unwanted or forcible penetration without consent (United States Department of Justice, 2017). More specifically, rape can include sexual violence tactics such as force, threats, manipulation, or coercion (National Sexual Violence Resource Center, 2022). The magnitude of the issue of rape has been demonstrated, with adult rape data showing that on average, 319,950 people over the age of 12 were raped or sexually assaulted in the United States annually in 2020 (Morgan, 2021). Furthermore, every sixty-eight seconds an American is raped (Morgan). Finally, …


Politics And The Criminal Enforcement Of Superfund, Joshua Ozymy, Melissa Jarrell Ozymy Jan 2023

Politics And The Criminal Enforcement Of Superfund, Joshua Ozymy, Melissa Jarrell Ozymy

Kentucky Journal of Equine, Agriculture, & Natural Resources Law

No abstract provided.


Retention Strategies Among Those On Community Supervision In The South: Lessons Learned During The Covid-19 Pandemic., Breana J. Uhrig Castonguay, Katherine Lemasters, Chris Corsi, Evan J. Batty, Taylor J. Krajewski, Madelene Travis, Craig Waleed, Carrie B. Oser, Kathryn M. Nowotny, Lauren Brinkley-Rubinstein Jan 2023

Retention Strategies Among Those On Community Supervision In The South: Lessons Learned During The Covid-19 Pandemic., Breana J. Uhrig Castonguay, Katherine Lemasters, Chris Corsi, Evan J. Batty, Taylor J. Krajewski, Madelene Travis, Craig Waleed, Carrie B. Oser, Kathryn M. Nowotny, Lauren Brinkley-Rubinstein

Sociology Faculty Publications

OBJECTIVES: Cohort studies must implement effective retention strategies to produce internally valid and generalizable results. Ensuring all study participants are retained, particularly those involved in the criminal legal system, ensures study findings and future interventions will be relevant to this group, who are often lost to follow-up: critical to achieving health equity. Our objective was to characterize retention strategies and describe overall retention among an 18-month longitudinal cohort study of persons on community supervision prior to and during the COVID-19 pandemic.

METHODS: We implemented various retention strategy best-practices (e.g., multiple forms of locator information, training study staff on rapport building, …


Statistical Analyses To Identify Genetic Variants Associated With Neuropathological And Mri-Based Endophenotypes Of Alzheimer’S Disease, Lincoln M. P. Shade Jan 2023

Statistical Analyses To Identify Genetic Variants Associated With Neuropathological And Mri-Based Endophenotypes Of Alzheimer’S Disease, Lincoln M. P. Shade

Theses and Dissertations--Epidemiology and Biostatistics

Aged individuals often accumulate multiple brain pathologies that contribute individually and synergistically to cognitive decline and dementia. Alzheimer’s disease (AD) is the most commonly diagnosed form of dementia, constituting over 50% of dementia diagnoses, and poses an enormous burden on human health and well-being. In the United States alone, over six million individuals are living with AD, and the disease imposes financial costs of treatment and care of over $300 billion annually. The most common form of AD, late-onset AD (LOAD), presents in individuals aged 65 years and older and is highly heritable, with twin and family studies estimating its …


Understanding And Targeting The Tph1-Serotonin-Htr3a Axis In Small Cell Lung Cancer, Yanning Hao Jan 2023

Understanding And Targeting The Tph1-Serotonin-Htr3a Axis In Small Cell Lung Cancer, Yanning Hao

Theses and Dissertations--Toxicology and Cancer Biology

Small cell lung cancer (SCLC), which accounts for 10-15% of all lung cancer, is the most malignant type that tends to grow fast and spread in its early stages. The 5-year survival rate remains low at 6% overall. Thus, new therapeutic methods and pharmacological targets for SCLC patients are urgently needed. We present novel data indicating that the synthesis of serotonin is upregulated in SCLC compared to normal bronchial epithelial cells and non-small cell lung cancer. Serotonin signaling plays a critical role in various physiological and pathological processes. However, its contribution to SCLC development has not been well understood. The …


Migrant-Activist Evidentiary Practices In The Aegean Sea, Beatrice A. Abbott Jan 2023

Migrant-Activist Evidentiary Practices In The Aegean Sea, Beatrice A. Abbott

Theses and Dissertations--Geography

This project examines digital maps and images made by migrants and activists traversing or helping others to traverse the Greek-Turkish maritime border in 2015 and early 2016, when over a million people arrived to European shores, mostly by way of the Aegean Sea. These maps were made using applications such as Google Maps, Bing Maps, Maps.me, and WhatsApp and circulated on public Facebook groups and pages. Through a visual analysis of these digital artifacts, I look at how they can be read to witness and contest deadly border geographies produced through migratory policies and practices of deterrence. Further, I argue …


Hoarding Lifesaving Knowledge While Millions Die: The Political Economy Of Global Covid-19 Vaccine Apartheid, Kenneth Stancil Jan 2023

Hoarding Lifesaving Knowledge While Millions Die: The Political Economy Of Global Covid-19 Vaccine Apartheid, Kenneth Stancil

Theses and Dissertations--Geography

Coronavirus vaccines saved millions of lives, but experts estimate that the suboptimal production and inequitable distribution of shots resulted in nearly 3 million preventable Covid-19 deaths in 2021 and 2022 as well as millions of indirect deaths during the pandemic. These avoidable fatalities are inseparable from the grotesquely unequal vaccination rates between rich and poor nations. Dose hoarding by high-income countries contributed to vaccine inequality, but the “vaccine apartheid” inflicted on low-income countries reflects an even more fundamental injustice: knowledge hoarding by profit-maximizing pharmaceutical corporations—aided and abetted by wealthy governments—which deprived generic manufacturers of the right to produce additional lifesaving …


A History Of Educational Concerts Of The Pittsburgh Symphony Orchestra, Sean Radermacher Jan 2023

A History Of Educational Concerts Of The Pittsburgh Symphony Orchestra, Sean Radermacher

Theses and Dissertations--Music

This project illuminates the history of educational concerts of the Pittsburgh Symphony Orchestra (PSO) and reveals a legacy of performances for young audiences, today’s educational innovations, and the orchestra’s evolving mission to serve young people. Concerts for young people are an important facet of the history of American orchestras. Today, these concerts and other educational programs are essential to increase the accessibility of orchestral music.

The PSO’s history highlights the close relationship of American orchestras with an educational mission from their early years to the present. After an overview of the origins of permanent orchestras and the national context of …


An Exploration And Performance Of Underrepresented Composers For Cello, Anna M. Watrous Jan 2023

An Exploration And Performance Of Underrepresented Composers For Cello, Anna M. Watrous

Libraries Award for Undergraduate Scholarship

As I was preparing for my senior degree cello recital (the performance component of this thesis) last summer, I realized that all the composers I planned on programming were famous composers that were white men. As a woman cellist, teacher, and arts advocate, I knew this was not the story that I wanted to tell through my recital. I realized that there was no reason to wait until after graduation when I was “finished learning” to be an advocate for those underrepresented in the arts, I could start with this recital. Through the process of programming, preparing, and performing this …


A Peculiar Institution: White Supremacy And The Black Guides Of Mammoth Cave, Seth Garcia Jan 2023

A Peculiar Institution: White Supremacy And The Black Guides Of Mammoth Cave, Seth Garcia

Libraries Award for Undergraduate Scholarship

Intensive tourist operations at Mammoth Cave began in 1838 when Frank Gorin purchased the cave property. He brought with him Stephen Bishop, an enslaved person who would become famous across the Western world for his explorations of the cave and his knowledge of its geology. Gorin would also lease Nicholas and Matterson Bransford, and these three men would begin a 100-year history of black guides at Mammoth Cave. This essay utilizes source material written by white visitors in diaries, guidebooks, and travelers’ accounts to better understand white supremacy during the mid to late 19th century. The guides were in a …


Comparing Indirect Assessment Results To A Direct Function Focused Preference Assessment To Identify Potential Reinforcers To Increase Task Completion In A School Setting, Kailee Joy Matthews Jan 2023

Comparing Indirect Assessment Results To A Direct Function Focused Preference Assessment To Identify Potential Reinforcers To Increase Task Completion In A School Setting, Kailee Joy Matthews

Theses and Dissertations--Early Childhood, Special Education, and Counselor Education

In the present study, a concurrent operant analysis (COA) was conducted for one elementary aged student in a publicly funded school to determine if the results yielded an interpretable outcome to identify a potential reinforcer to increase work completion. A simultaneous treatments design was used during the COA to assess choice making behavior. The results of the COA indicated the student’s choice making behavior was maintained by access to attention. An indirect measure of motivation was used as a secondary assessment to identify a potential reinforcer to increase work completion and to determine if the results would align with the …


Comparing The Efficacy Of Interventions Derived From Concurrent Operant Analysis And Indirect Assessment, Lane Marquardt Jan 2023

Comparing The Efficacy Of Interventions Derived From Concurrent Operant Analysis And Indirect Assessment, Lane Marquardt

Theses and Dissertations--Early Childhood, Special Education, and Counselor Education

In this study, a simultaneous treatments design was used to conduct a concurrent operant analysis (COA) to evaluate the choice making behavior of one elementary aged student. The COA results were used as a possible reinforcer for one of the conditions for the intervention to increase work completion. An indirect assessment, Questions about Behavioral Function (QABF), was used identify a hypothesized function to the student’s lack of task completion behavior. The results from thee QABD were used as a possible reinforcer for one of the conditions for the intervention to increase work completion. An alternating treatments design (ATD) was used …


Asynchronous E-Training And Coaching To Indonesian Parents: Naturalistic Strategies To Support Language Development Of Children With Social-Communication Delays, Ndaru Prapti Jan 2023

Asynchronous E-Training And Coaching To Indonesian Parents: Naturalistic Strategies To Support Language Development Of Children With Social-Communication Delays, Ndaru Prapti

Theses and Dissertations--Early Childhood, Special Education, and Counselor Education

The study is about virtual training and coaching to Indonesian parents of preschool-age children with social-communication delays to implement naturalistic intervention. These intercontinental coaching sessions were delivered asynchronously because of the time difference between the coach and the participants and internet bandwidth barrier in some rural areas in Indonesia. Multiple-baseline design across behaviors was utilized to determine the effect of asynchronous training and coaching program to teach three Indonesian parents three naturalistic strategies (i.e., modeling, mand-model, and time delay) during natural routines. Parent-child dyads video-recorded their interaction before and after intervention.

The intervention was started by learning the strategies, video-recorded …


Establishing Self-Instruction Skills By Teaching Mands For Informational Inquiries With Intelligent Voice Assistants Using Progressive Time Delay, Taylor Rae Kelley Jan 2023

Establishing Self-Instruction Skills By Teaching Mands For Informational Inquiries With Intelligent Voice Assistants Using Progressive Time Delay, Taylor Rae Kelley

Theses and Dissertations--Early Childhood, Special Education, and Counselor Education

In this study, unknown questions were posed to four high school students with intellectual disabilities, and they were directed to use intelligent voice assistants to mand for the answers. This self-instruction skill was taught using progressive time delay within a multiple probe across participants design with embedded generalization probes. Participants were trained to initiate Siri® or Google Assistant™ before baseline sessions were conducted. The effectiveness of progressive time delay to teach this skill was evaluated when questions were presented by research implementers and when presented by untrained communication partners. Implementers exposed participants to additional voice commands at the end of …


Effects Of Video Modeling With Voice-Over Narration Versus No Voice-Over Narration, Kennedy Carpenter Jan 2023

Effects Of Video Modeling With Voice-Over Narration Versus No Voice-Over Narration, Kennedy Carpenter

Theses and Dissertations--Early Childhood, Special Education, and Counselor Education

In the current study, the effects of video modeling with voice-over narration (VMW) was compared to the effects of video modeling with no voice-over narration (VMN) when learning the acquisition of a vocational skill. Four high-school students within a public school who spent most of their school day in a special education classroom participated in the study. An adapted alternating treatments design was used to compare the VMW and VMN conditions and then a best alone condition was conducted for each participant that used the video modeling procedure that demonstrated superiority during the comparison. A modification of the inclusion of …


Evaluating The Differential Effects Of Using A Technology-Based Antecedent Intervention In Comparison To A Technology-Based Treatment Package, Rachel Fosnaught Jan 2023

Evaluating The Differential Effects Of Using A Technology-Based Antecedent Intervention In Comparison To A Technology-Based Treatment Package, Rachel Fosnaught

Theses and Dissertations--Early Childhood, Special Education, and Counselor Education

This study investigated the differential effects of using non-contingent reinforcement in the form of attention as an antecedent intervention in comparison to using non-contingent reinforcement in addition to self-monitoring as a treatment package. A multi treatment single case research design was utilized in this study. Levels of student’s on-task behavior were measured to evaluate the differential effects of an antecedent intervention in comparison to the combination of an antecedent and consequent intervention. This study also only used treatments that were technologically delivered to the participants.


Disability Label And Least Restrictive Environments: General Elementary Education Teachers’ Experiences And Perceptions, Sara Sheffler Jan 2023

Disability Label And Least Restrictive Environments: General Elementary Education Teachers’ Experiences And Perceptions, Sara Sheffler

Theses and Dissertations--Early Childhood, Special Education, and Counselor Education

The least restrictive environment (LRE) is the educational placement determined necessary for obtaining maximum educational benefits. The individualized education program (IEP) team determines the LRE after analyzing the student’s academic and behavioral data and assessing the student’s unique needs. Specific special educational labels may produce a higher-than-normal frequency of more restrictive environment decisions by the IEP team. The current study surveyed general education elementary teachers about LRE placements of a hypothetical student with either autism spectrum disorder or emotional and behavioral disorders. Teachers were provided with a hypothetical vignette of a student engaging in challenging behavior, followed by hypothetical data …


Effects Of Peer Training On The Use Of Aided Language Modeling And Aac User Communicative Acts, Shelby Smith Sheets Jan 2023

Effects Of Peer Training On The Use Of Aided Language Modeling And Aac User Communicative Acts, Shelby Smith Sheets

Theses and Dissertations--Early Childhood, Special Education, and Counselor Education

The purpose of this study was to evaluate the effects of two peers versus one peer on the rate of aided language modeling. The peers were trained and then implemented the communication strategy while playing a tabletop game with an AAC user with extensive support and complex communication needs (ESCCN). A multitreatment design was used to compare the effects of the rate of aided language models (ALM) provided by peers, the rate of communicative acts (CA) provided by the AAC user, and the fidelity of peer implementation of ALM when two peers versus one peer played a tabletop game with …


Prevalence Of Multimorbidity In The Atherosclerosis Risk In Communities Study At Baseline, Katie Highfill Jan 2023

Prevalence Of Multimorbidity In The Atherosclerosis Risk In Communities Study At Baseline, Katie Highfill

Theses and Dissertations--Public Health (M.P.H. & Dr.P.H.)

Aim: The aim of this study is to examine the prevalence of multimorbidity among middle-aged adults in the Atherosclerosis Risk in Communities Study at baseline by examining the demographic and socioeconomic characteristics of the participants.

Methods

I included 15,698 participants from the Atherosclerosis Risk in Communities (ARIC) baseline visit. Participants were randomly selected from 4 different locations in the United States. Multimorbidity was defined as the prevalence of 2 or more chronic conditions in an individual. Three different multimorbidity definitions (MM1, MM2, and MM3) were created with different inclusion criterion. Prevalence of each multimorbidity definition was analyzed among participants using …


Real-Time Surveillance Of The Drug Epidemic: An Assessment And Comparative Visualization Of Substance Abuse In The Commonwealth Of Kentucky, Julia Van Hosen Jan 2023

Real-Time Surveillance Of The Drug Epidemic: An Assessment And Comparative Visualization Of Substance Abuse In The Commonwealth Of Kentucky, Julia Van Hosen

Theses and Dissertations--Public Health (M.P.H. & Dr.P.H.)

The purpose of this study was to implement and examine a new surveillance system for Kentucky State Police’s forensics unit to track trends of illicit drugs and drug trafficking, and to see if the implementation of this new system was associated with a decrease in overall drug counts over a period of five months. An extensive review of the literature showed that the drug epidemic in the United States continues to worsen, with public health and law enforcement institutions leading the fight in attempting to end the epidemic, but little evidence showing these two joining forces to work together.

Results …


"Disparities In Suicide Mortality Among Healthcare Support Workers In The United States, 2003-2019", Sol Ngam Jan 2023

"Disparities In Suicide Mortality Among Healthcare Support Workers In The United States, 2003-2019", Sol Ngam

Theses and Dissertations--Public Health (M.P.H. & Dr.P.H.)

Objectives: To identify differences in demographic and contextual characteristics of suicide mortality among healthcare support workers (HCSWs) and to estimate annual suicide rates among HCSW in the United States from 2003-2019 using the National Violent Death Reporting System (NVDRS) and the United States Bureau of Labor Statistics (BLS).

Methods: Demographic variables of healthcare support worker suicide decedents were collected using the NVDRS. Odds ratios for circumstantial risk factors by sex were calculated. Crude rates for healthcare support worker suicide decedents were calculated and compared to the U.S. general population suicide crude rates.

Results: Male HCSW were more likely to have …


Gender Differences In Barriers To Entering Substance Use Treatment, Casey A. Baker Jan 2023

Gender Differences In Barriers To Entering Substance Use Treatment, Casey A. Baker

Theses and Dissertations--Public Health (M.P.H. & Dr.P.H.)

Background

Nationally representative data have indicated that less than one in ten individuals with a substance use disorder (SUD) have received recent treatment, suggesting a need for research to examine potential barriers to SUD services. Although research has been conducted to identify some barriers to treatment, there is little research focused on gender differences. To address this gap in research, the present study aimed to examine gender differences in barriers to entering SUD treatment, as well as differences in factors that may impact decisions to enter treatment.

Methods

Participants (N = 62) were recruited from the community as part of …


Moving Toward And Accessing Adult-Oriented Rehabilitation Therapy Services For Adults With Lifelong Disabilities: A Tale Of Three Studies, Catherine Gohrband Jan 2023

Moving Toward And Accessing Adult-Oriented Rehabilitation Therapy Services For Adults With Lifelong Disabilities: A Tale Of Three Studies, Catherine Gohrband

Theses and Dissertations--Rehabilitation Sciences

The aim of this dissertation was to explore how adults with a Lifelong Disability (LLD) access and experience rehabilitation therapy services across their lives. Many LLD diagnoses such as cerebral palsy and spina bifida are considered non-progressive; however, there are common challenges that occur as people with LLD become adults, including increased pain, fatigue, and functional loss. Literature addressing the needs of people with LLD to access adult-oriented medical providers has focused primarily on medical transitions, which have described the processes for pediatric patients moving to adult-oriented settings from pediatric settings. Few studies have addressed the rehabilitation therapy needs of …


Consequences Of Shift Work And Job-Related Exposure On Sleep And Musculoskeletal Outcomes In Structural Firefighters, Jacob Dennis Jelmini Jan 2023

Consequences Of Shift Work And Job-Related Exposure On Sleep And Musculoskeletal Outcomes In Structural Firefighters, Jacob Dennis Jelmini

Theses and Dissertations--Rehabilitation Sciences

Firefighting is considered one of the most dangerous occupations in the workforce. Musculoskeletal injuries are consistently the most frequent, and most costly, documented non-fatal injuries in the firefighting setting. An increase in job stress, job exposure, and deprived sleep secondary to job-related duties are plausible explanations for the frequency in musculoskeletal injury. The aims of this dissertation were to ascertain not only how occupational exposure via firefighter emergency call volume may influence outcomes contributing to job stress and objective and subjective sleep metrics, but also its influence on the incidences of musculoskeletal pain.

The results showed that emergency call volume …


The Dust-To-Gas Mass Ratio Of Luminous Galaxies As A Function Of Their Metallicity At Cosmic Noon, Gergö Popping, Irene Shivaei, Ryan L. Sanders, Tucker Jones, Alexandra Pope, Naveen Reddy, Alice E. Shapley, Alison L. Coil, Mariska Kriek Jan 2023

The Dust-To-Gas Mass Ratio Of Luminous Galaxies As A Function Of Their Metallicity At Cosmic Noon, Gergö Popping, Irene Shivaei, Ryan L. Sanders, Tucker Jones, Alexandra Pope, Naveen Reddy, Alice E. Shapley, Alison L. Coil, Mariska Kriek

Physics and Astronomy Faculty Publications

Aims. We aim to quantify the relation between the dust-to-gas mass ratio (DTG) and gas-phase metallicity of z = 2.1-2.5 luminous galaxies and contrast this high-redshift relation against analogous constraints at z = 0.

Methods. We present a sample of ten star-forming main-sequence galaxies in the redshift range 2.1 < z < 2.5 with rest-optical emission-line information available from the MOSDEF survey and with ALMA 1.2 millimetre and CO J = 3-2 follow-up observations. The galaxies have stellar masses ranging from 1010.3 to 1010.6 M? and cover a range in star-formation rate from 35 to 145 M? yr-1. We calculated the gas-phase oxygen abundance of these galaxies from rest-optical nebular emission lines (8.4 < 12+log (O=H) < 8.8, corresponding to 0.5..1.25 Z?). We estimated the dust and H2 masses of the galaxies (using a metallicity-dependent CO-to-H2 conversion factor) from the 1.2mm and CO J = 3..2 observations, respectively, from which we estimated a DTG.

Results. We find that the galaxies in this sample follow the trends already observed between CO line luminosity and dust-continuum luminosity from z = 0 to z = 3, extending such trends to fainter galaxies at 2.1 < z < 2.5 than observed to date. We find no second-order metallicity dependence in the CO - dust-continuum luminosity relation for the galaxies presented in this work. The DTGs of main-sequence galaxies at 2.1 < z < 2.5 are consistent with an increase in the DTG with gas-phase metallicity. The metallicity dependence of the DTG is driven by the metallicity dependence of the CO-to-H2 conversion factor. Galaxies at z = 2.1-2.5 are furthermore consistent with the DTG-metallicity relation found at z = 0 (i.e. with no significant evolution), providing relevant constraints for galaxy formation models. These results furthermore imply that the metallicity of galaxies should be taken into account when estimating cold-gas masses from dust-continuum emission, which is especially relevant when studying metal-poor low-mass or high-redshift galaxies.


Resolved Velocity Profiles Of Galactic Winds At Cosmic Noon, Keerthi Vasan G. C., Tucker Jones, Ryan L. Sanders, Richard S. Ellis, Daniel P. Stark, Glenn G. Kacprzak, Tania M. Barone, Kim-Vy H. Tran, Karl Glazebrook, Colin Jacobs Jan 2023

Resolved Velocity Profiles Of Galactic Winds At Cosmic Noon, Keerthi Vasan G. C., Tucker Jones, Ryan L. Sanders, Richard S. Ellis, Daniel P. Stark, Glenn G. Kacprzak, Tania M. Barone, Kim-Vy H. Tran, Karl Glazebrook, Colin Jacobs

Physics and Astronomy Faculty Publications

We study the kinematics of the interstellar medium (ISM) viewed “down the barrel” in 20 gravitationally lensed galaxies during cosmic noon (z = 1.5-3.5). We use moderate-resolution spectra (R ∼ 4000) from Keck’s Echellette Spectrograph and Imager and Magellan/MagE to spectrally resolve the ISM absorption in these galaxies into ∼10 independent elements and use double Gaussian fits to quantify the velocity structure of the gas. We find that the bulk motion of gas in this galaxy sample is outflowing, with average velocity centroid v cent = − 141 km s−1 (±111 km s−1 scatter) measured with respect to …


Internalized Homonegativity And The Mental Health Of Lesbian, Gay, And Bisexual Individuals: An Integrative Treatment Approach, David Kearby Jan 2023

Internalized Homonegativity And The Mental Health Of Lesbian, Gay, And Bisexual Individuals: An Integrative Treatment Approach, David Kearby

DSW Capstone Projects

Lesbian, gay, and bisexual individuals (LGBI) have a higher rate of mental health disorders than the general population. The mental health disparities experienced by LGBI are positively correlated with higher internalized homonegativity (IH) levels, which impacts their functioning at the unconscious, cognitive, and interpersonal levels. Thus, effective interventions targeting the mental health of LGBI must consider IH's intrapsychic, cognitive, and interpersonal nature. An integrative psychotherapy approach addressing the mental health and IH of LGBI is needed to address the intrapsychic, cognitive, and interpersonal factors at play.

Product one of this capstone is a systematic literature review that identified psychotherapeutic interventions …


Three Essays On Health, Food, And Agricultural Economics, Saber Feizy Jan 2023

Three Essays On Health, Food, And Agricultural Economics, Saber Feizy

Theses and Dissertations--Agricultural Economics

This dissertation comprises three distinct but interrelated projects that explore the intersection of agriculture, nutrition, and economics. The first project investigates the impact of Community Supported Agriculture (CSA) food programs on the health outcomes of its participants. Using fixed effects models and a matching algorithm, the study finds that while conventional fixed effects models indicate a significant effect of CSA participation on diet-related medical expenditures, our modified time-heterogenous fixed effects model did not find a meaningful effect. The results of the matching method are consistent with those of our modified model.

The second project examines racial disparities in the prevalence …


Building Energy Modeling And Studies Of Electric Power Distribution Systems With Distributed Energy Resources, Evan S. Jones Jan 2023

Building Energy Modeling And Studies Of Electric Power Distribution Systems With Distributed Energy Resources, Evan S. Jones

Theses and Dissertations--Electrical and Computer Engineering

There is significant opportunity for savings in energy and investment from improved performance of electric Power Distribution Systems (PDSs) through optimal planning and operation of conventional voltage-controlling devices. Novel multi-step model conversion and optimal capacitor planning (OCP) procedures are proposed for large-scale utility PDSs and are exemplified with an existing utility circuit of approximately 4,000 buses. Simulated optimal control and operation is achieved with a cluster-based approach that utilizes load-forecasting to minimize equipment degradation by intelligently dispersing device setting adjustments over time such that they remain most applicable. Improved performance may also be achieved through smart building technologies and Virtual …


Optimal Design Of Special High Torque Density Electric Machines Based On Electromagnetic Fea, Murat G. Kesgin Jan 2023

Optimal Design Of Special High Torque Density Electric Machines Based On Electromagnetic Fea, Murat G. Kesgin

Theses and Dissertations--Electrical and Computer Engineering

Electric machines with high torque density are essential for many low-speed direct-drive systems, such as wind turbines, electric vehicles, and industrial automation. Permanent magnet (PM) machines that incorporate a magnetic gearing effect are particularly useful for these applications due to their potential for achieving extremely high torque density. However, when the number of rotor polarities is increased, there is a corresponding need to increase the number of stator slots and coils proportionally. This can result in manufacturing challenges. A new topology of an axial-flux vernier-type machine of MAGNUS type has been presented to address the mentioned limitation. These machines can …