556 Works

Development of a Field Expedient Screening Tool for the Coach to Identify Musculoskeletal Risk Factors in Baseball Players

Kyle Matsel
Identification of musculoskeletal (MSK) injury risk factors in baseball players can be challenging particularly for youth and high school coaches. Many baseball coaches lack a sports medicine and/or strength and conditioning staff to assist with injury prevention initiatives. Given the extensive responsibilities in managing the team and preparing the players for athletic competition, little time remains to focus on injury prevention and arm care programs. Furthermore, assessment, diagnosis, and management of MSK impairments is outside...

Fostering A Sense of Community Among Teachers Via A Community of Practice

Apryl Clark Moore
Communities of Practice (CoPs) are learning communities that can improve the skills and knowledge of teachers and improve a sense of community. CoPs are designed to cultivate relationships among teachers and develop professional practices that increase a sense of community and knowledge attainment. This study examined the use an online CoP to increase teachers’ sense of community during the COVID-19 global pandemic. Teachers joined a private online community and shared resources about classroom management strategies....

MASS SPECTROMETRY METHOD DEVELOPMENT FOR THE DISCOVERY AND CHARACTERIZATION OF SECONDARY METABOLITES

Zachary Kelley
Secondary metabolites are organic compounds produced by an organism for reasons other than growth and development. In plants, secondary metabolites generally act as defense agents produced to deter predators and inhibit other competitive species. For humans, these compounds can often have a beneficial effect and are pursued and utilized as natural pharmaceuticals. The development of sensitive, high-throughput analytical screening methods for plant derived metabolites is crucial for natural pharmaceutical product discovery and plant metabolomic profiling....

STRUCTURAL ADAPTATION OF EQUINE PROXIMAL SESAMOID BONES TO HIGH-SPEED EXERCISE

Kathryn Mary Babiarz
Proximal sesamoid bone (PSB) fractures are one of the most commonly reported catastrophic musculoskeletal injuries (CMI) in Thoroughbred racing. Despite the seriousness of these injuries, an understanding of the structural changes that occur normally within PSBs in response to the biomechanical forces of high-speed exercise and how they relate to pathological events leading to fracture remain limited. To address this critical knowledge gap, PSBs from Thoroughbred horses were analyzed with both computed tomography (CT) and...

PROFILING SOCIAL MEDIA TOURISTS USING LITERATURE DURING 2015-2019

Jijun Chen
With the continuous development of mobile commerce and the Internet, social media has deeply penetrated people’s lives and fundamentally changed the way of searching, reading and using travel-related information. With this backdrop, this research studied social media tourists (SMTs) who share or acquire information related to the hospitality and tourism on social media platforms. Based on 271 empirical articles retrieved from major databases and top hospitality and tourism journals in the recent five years from...

SPONTANEOUS POSTPARTUM HYPERTENSION IN THE AFRICAN GREEN MONKEY

Patrick Rivera
Postpartum hypertension (PPHT) is a hypertensive disorder of the puerperium that occurs in women at a rate between 0.8-28% although the exact incidence is unknown due primarily to its transient presentation during a time of reduced medical supervision. The etiology of PPHT is currently unknown with no present experimental animal model. We present the African green monkey (Chlorocebus aethiops sabaeus; AGM) as a potentially translational NHP model of PPHT in humans. AGMs were identified as...

DESIGN, SYNTHESIS, AND ANTICANCER PROPERTIES OF Ru(II) COMPLEXES WITH ORGANOMETALLIC, “EXPANDED” BIPYRIDINE, AND O,O’-CHELATING LIGANDS

Raphael Ryan
Cancer is a worldwide public health crisis that requires new and improved drugs to be developed to extend survival rates and improve quality of life for the patient. Platinum-based drugs are used in approximately 50% of cancer treatment regimens. These drugs are highly effective in many kinds of cancer; however, cancers can develop platinum resistance and these drugs have troubling side effects that reduced their use and efficacy. To overcome these disadvantages, many other metals...

STUDY OF STRESS-BASED FIBER REORIENTATION LAW IN A FINITE ELEMENT MODEL OF CARDIAC TISSUE

Alexus Rockward
Myofiber organization in the heart plays an important role in achieving and maintaining physiological cardiac function. In many cardiac disease states, myofibers and particularly cardiomyocytes are disorganized in chaotic patterns, a phenotype known broadly as myocardial disarray. In familial hypertrophic cardiomyopathy (HCM), this disorganization in the form of myocyte disarray is thought to contribute to impaired cardiac function and the development of arrhythmia during disease progression. However, the mechanisms regarding fiber reorientation in the heart...

Three Essays on Export Earnings Volatility

Yoonseon Han
My dissertation consists of three essays on export earnings volatility. In the first essay, I look at the determinants of export earnings volatility. The four main determinants suggested by the theoretical literature are export concentration, durability, vertical linkages, and financial vulnerability. A panel of bilateral trade data at the industry level, containing 178 exporting countries, 194 importing countries, and 590 SITC Rev. 1 four-digit industries from 1962 to 2011, is used and these aspects are...

Evaluation of Radiative Conductivity inside a Porous Media with the Effect of Participating Medium Based on Microscale Imaging

Mingping Zheng
Space vehicles will experience high loads of heat while entering the planetary atmosphere. At such high temperature, radiation becomes the dominant mode of heat transfer. Since the atmospheric entry environment is nearly impossible to duplicate in a laboratory environment, a numerical model to evaluate thermal performance of the thermal protection system was established. The model simulates the radiative heat transfer process in highly porous media, and the process also takes into account the influence of...

Three Essays in Regional Taxation

Kenneth Tester
This dissertation looks at the role that geographically limited taxation and the behavioral response of economic agents to different forms of regional taxation. While geographic taxation is typically thought to be confined to state and local taxes, federal tax policy can also create designated areas that receive preferential tax treatment. In this dissertation, both types of regional taxation are examined and are unified under common themes such as tax mobility and the definition of the...

QUADRICEPS RECRUITMENT AND TWITCH PROPERTIES IN LEAN AND OBESE WOMEN BEFORE AND AFTER FATIGUING EXERCISE

Rebekah Carpenter
Skeletal muscle strength, specifically that of the anti-gravitational muscles such as the quadriceps, is essential for performing dynamic tasks including walking, navigating stairs, and transitioning between sitting and standing. Obesity has been shown to negatively impact musculoskeletal function and decrease quadriceps strength relative to body weight. Additionally, obesity has been linked with higher rates of fatigue and lower strength outcomes following a test of muscular endurance of the quadriceps. Since obesity lowers relative strength, it...

THE IMPACTS OF IMAZAPIC ON GARLIC MUSTARD AND NON-TARGET FOREST FLOOR VEGETATION IN CENTRAL KENTUCKY’S HARDWOOD FORESTS

Pavan Podapati
Alliaria petiolata is an invasive biennial herb that poses a substantial threat to various ecosystems across the United States. Imazapic herbicide can control A. petiolata infestations, but there is limited peer-reviewed data on impacts of pre-emergent imazapic spraying to forest floor communities. This research examined the impacts of pre-emergent imazapic (0.84 kg/ha) with Pentra-Bark® surfactant on ground cover of A. petiolata and the spring perennials Claytonia virginica and Erigenia bulbosa. Experimental populations in randomized blocks...

Cross Approximation Methods for Integral Equation Matrices with Complex Structure

Jordon Blackburn
Electrical and computer engineers rely on electromagnetic field (EM) theory to formulate and design systems that utilize information or energy obtained from a signal. Over time these systems have been increased in scale and complexity and adapted to handle a wider array of problems. This has motivated substantial developments in computational sciences including the area of computational electromagnetics (CEM).The focus of CEM is the simulation of electromagnetic fields. At the University of Kentucky, the CEM...

USE OF MICROSCALE HYDROPHOBIC SURFACE FEATURES FOR INTEGRATION OF 3D CELL CULTURE INTO MULTI-FUNCTIONAL MICROFLUIDIC DEVICES

Soroosh Torabi
3D cell culture and microfluidics both represent powerful tools for replicating critical components of the cell microenvironment; however, challenges involved in integration of the two and compatibility with standard tissue culture protocols still represent a steep barrier to widespread adoption. Here we demonstrate the use of engineered surface roughness in the form of microfluidic channels to integrate 3D cell-laden hydrogels and microfluidic fluid delivery. When a liquid hydrogel precursor solution is pipetted onto a surface...

AN ASSESSMENT OF THE CARRIER STATE AND A NOVEL MARKER OF LEPTOSPIRA AND ABORTION IN CENTRAL KENTUCKY HORSES

Gloria Gellin
Leptospirosis is a reemerging zoonotic infection of worldwide importance and affects all mammals. The bacterium is transmitted to animals and humans by urine, fetal membranes and body fluids. Leptospira shedding in the urine contaminates both soil and water, exposing both humans and animals to the bacterium. Leptospirosis in horses can cause abortion and is one of the etiologies of equine recurrent uveitis which can lead to blindness. Equine leptospiral abortion in Central Kentucky is primarily...

THE EFFECTS OF FORM OF SELENIUM ON THE BOVINE CORPUS LUTEUM, UTERINE ENDOMETRIUM, AND DEVELOPMENT OF THE CONCEPTUS

Benjamin Ryne Crites
Widespread regions of the southeast United States have soils deficient in selenium (Se), necessitating Se supplementation to cattle grazing in these areas. Adequate dietary Se is required for optimal immune function, growth, and fertility. In forages, Se is predominantly found in the organic form (OSe), which is known to increase bioavailability. However, the inorganic form (ISe) is typically found in commercial mineral mixes. We previously reported that supplementation with an isomolar 1:1 mix (MIX) of...

FIRST-GENERATION DOCTORAL STUDENTS’ EXPERIENCES NAVIGATING GRADUATE SCHOOL

Leah Vance-Berg
First-generation students who pursue graduate programs face a unique set of challenges and rely on their strengths to help them navigate their graduate programs. This study will look at how first-generation students have navigated their graduate course work. Semi-structured interviews were conducted with 19 doctoral students at Magnolia University where participants discussed the challenges they have faced during graduate school and how they have navigated these challenges. This exploratory study uses social and cultural capital...

TECHNOLOGY LEADERSHIP PRACTICES OF APPALACHIAN SCHOOL LEADERS DURING THE COVID-19 PANDEMIC

Todd Norton
The COVD-19 pandemic caused a global disruption to education. In some parts of the United States, schools were cancelled for the year, while others shifted their educational offerings to a distance learning model. Kentucky announced short term closures beginning March 13, 2020, but on April 20th the Kentucky Governor announced that schools would not reopen for in-person instruction for the remainder of the academic year. Many school districts quickly developed a plan to continue a...

QUANTIFICATION OF IN-PLAY COMPETITION DEMANDS OF COLLEGIATE AMERICAN FOOTBALL PLAYERS USING GLOBAL POSITIONING SYSTEMS

Alex Brownell
There is limited information describing the competition demands of American football. A greater understanding of competition demands will allow strength and conditioning practitioners to create appropriate training programs to enhance athlete readiness and performance. Therefore, the purpose of this study was to analyze the competition demands of collegiate American football players using global positioning systems (GPS), specifically comparing the in-play GPS versus out-of-play GPS outcomes. Twenty-two American football athletes (Age: 20.8 ± 0.9 yr, Height:...

A COMPARATIVE STUDY OF STRESS, TRAUMA, WELL-BEING, AND FUTURE ORIENTATION AMONG COMMUNITY COLLEGE STUDENTS

Melinda LeMaster
This study measured perceived stress, past trauma, well-being, and future orientation in a sample of community college students located in the Southeast United States. The sample included 412 participants (78%) female; 59% of student participants reported living in a rural community and 41% in a non-rural community. The mean age was 22 for 70% of participants, while 30% were over age 30. Framed by Family Stress Theory and Human Ecological Systems Theory, the study tested...

Epidemiology of Upper Extremity Injuries in High School Sports

Autumn Ruthe Whitson
Participation in high school sports has seen a steady increase over the past four decades. With nearly eight million student-athletes participating, careful monitoring of injuries related to their participation is imperative. Injury surveillance efforts through national databases have produced a multitude of studies detailing injuries that occur in specific sports, specific body parts, or particular diagnoses. The lower extremity tends to be injured more frequently than the upper extremity resulting in various comprehensive analyses on...

SCIENCE-BASED REGULATION OF PHARMACOLOGICAL SUBSTANCES IN COMPETITION HORSES

Jacob Machin
Current testing methodologies within equine forensic toxicology focus on arbitrary thresholds and zero-tolerance policy. Modern analytical chemistry’s limits of detection are low enough that oftentimes femtogram-per-milliliter amounts of a substance can readily be identified in both blood and urine of a horse. For most pharmacologically relevant compounds, these concentrations have no relevance to pharmacological effect. It is therefore crucial that testing methodologies to determine appropriate thresholds and cut-offs be developed that are driven by biological...

COMPARATIVE EFFECTS OF WORDS PLUS PICTURES AND WORDS ALONE ON THE READING COMPREHENSION OF YOUTH WITH DISABILITIES

Lindsay Caudill
This study compared the effectiveness and efficiency of two instructional conditions on the reading comprehension of fifth and sixth grade students with moderate and severe disabilities. A words plus pictures and words alone condition were examined through the use of an adapted alternating treatment design replicated across 3 participants. Results indicated that the effect was minimal, with words plus pictures being slightly more effective.

“I’m Like Their GPS”

Bonita Tyler
As American community colleges replace prerequisite developmental mathematics courses with corequisite courses, the work of faculty to support underprepared students merits attention. This curricular change means underprepared students are enrolling directly in both college-level content courses with required corequisite support courses for necessary remediation, thus broadening the range of student skills and abilities in the classroom. Faculty work is significantly impacted by this change. Previous research indicates that corequisite course configurations have mitigated some problems...

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