546 Works

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...

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...

Real-World Applications for Analytics Teaching and Learning

Anita Lee-Post
This document provides learning-by-doing materials for Analytics software skill development using SAS JMP. It integrates Analytics concepts and techniques with real-world scenarios based on the COVID-19 pandemic to illustrate how real-world data can be transformed into actionable insights to offer decision support for COVID-19 related issues. A holistic treatment of the Analytics process from data acquisition and cleansing to data analysis and interpretation is emphasized using five studies: 1. Characterize COVID-19 mortality demographic risk factors,...

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...

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....

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...

A trait-based framework for predicting foodborne pathogen risk from wild birds

Olivia Smith, Elissa Olimpi, Nora Navarro-González, Kevin Cornell, Luke Frishkoff, Tobin Northfield, Timothy Bowles, Max Edworthy, Johnna Eilers, Zhen Fu, Karina Garcia, David Gonthier, Matthew Jones, Christina Kennedy, Christopher Latimer, Jeb Owen, Chika Sato, Joseph Taylor, Erin Wilson Rankin, William Snyder & Daniel Karp
Recent foodborne illness outbreaks have heightened pressures on growers to deter wildlife from farms, jeopardizing conservation efforts. However, it remains unclear which species, particularly birds, pose the greatest risk to food safety. Using >11,000 pathogen tests and 1,565 bird surveys covering 139 bird species from across the western U.S.A., we examined the importance of 11 traits in mediating wild bird risk to food safety. We tested whether traits associated with pathogen exposure (e.g., habitat associations,...

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...

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...

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...

Combining Approximate Computing And Adiabatic Logic For Low-Power And Energy-Efficient Iot Edge Computing

Wu Yang
The growing data-intensive applications that run on IoT edge devices require the circuit to be low-power consumption and energy-efficient for limited resources. As conventional Complementary Metal-Oxide-Semiconductor (CMOS) scales down to the nanometer technology node, it reaches its limits, such as leakage and power consumption. Adiabatic logic and approximate computing are emerging techniques for the low-power circuit. Adiabatic logic can recycle energy which is a promising solution for building energy-efficient circuits. However, the power clock scheme...

Weight Distributions, Automorphisms, and Isometries of Cyclic Orbit Codes

Hunter Lehmann
Cyclic orbit codes are subspace codes generated by the action of the Singer subgroup Fqn* on an Fq-subspace U of Fqn. The weight distribution of a code is the vector whose ith entry is the number of codewords with distance i to a fixed reference space in the code. My dissertation investigates the structure of the weight distribution for cyclic orbit codes. We show that for full-length orbit codes with maximal possible distance the weight...

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....

USGS 104(b) Grant Program

Emily Koyagi, Steve Evans & Lindell Ormsbee
The Kentucky Water Resources Research Institute (KWRRI) is one of 54 federally authorized water resource institutes or centers throughout the United States and its territories. It operates under the authority of the Water Resources Research Act of 1964 (P.L. 88-379 codified at 42 U.S.C. 10301 et seq.) through the Water Resources Research Institutes Program administered by the United States Geological Survey (USGS). KWRRI’s annual base grant program under section 104(b) supports the following objectives specified...

FABRICATION OF NANOPOROUS MATERIALS FOR APPLICATIONS UNDER EXTREME ENVIRONMENTS

Maria Kosmidou
The study of nanoporous materials has become a key aspect of nanotechnology due to their high surface-area-to-volume ratio, arising from the small size ligaments and pores that form the structure. Sensing, catalysis, micro-electromechanical systems (MEMS), medical applications, and materials for radiation environments are some of the applications for which nanoporous materials are considered great candidates. This work, performed at the Ion Beam Laboratory (IBL) at Sandia National Laboratories (SNL), examines the effect of heavy and...

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...

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...

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...

Weakly Supervised Learning for Multi-Image Synthesis

Muhammad Usman Rafique
Machine learning-based approaches have been achieving state-of-the-art results on many computer vision tasks. While deep learning and convolutional networks have been incredibly popular, these approaches come at the expense of huge amounts of labeled data required for training. Manually annotating large amounts of data, often millions of images in a single dataset, is costly and time consuming. To deal with the problem of data annotation, the research community has been exploring approaches that require less...

DIMENSION REDUCTION TECHNIQUES IN REGRESSION

Pei Wang
Because of the advances of modern technology, the size of the collected data nowadays is larger and the structure is more complex. To deal with such kinds of data, sufficient dimension reduction (SDR) and reduced rank (RR) regression are two powerful tools. This dissertation focuses on these two tools and it is composed of three projects. In the first project, we introduce a new SDR method through a novel approach of feature filter to recover...

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...

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...

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...

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...

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...

Registration Year

  • 2021
    546

Resource Types

  • Dissertation
    295
  • Text
    192
  • Dataset
    27
  • Report
    22
  • Journal Article
    5
  • Data Paper
    3
  • Book
    1
  • Conference Proceeding
    1

Affiliations

  • University of Kentucky
    546
  • Zhejiang University
    8
  • Sun Yat-sen University
    7
  • Wenzhou Medical University
    6
  • Shanghai University of Traditional Chinese Medicine
    6
  • Guangzhou Medical University
    6
  • State Administration of Traditional Chinese Medicine of the People's Republic of China
    5
  • Chinese Academy of Tropical Agricultural Sciences
    5
  • Hebei Normal University
    5
  • North West Agriculture and Forestry University
    5