753 Works

THE SURVIVAL OF VARIOUS PATHOGENIC ORGANISMS IN FATS AND OILS

Kelsey Ellen Lamb
The research within this thesis sought to determine the ability of various animal derived fats and plant derived oils to support the survival of several pathogenic cocktails over a multitude of storage times. The Salmonella study explored the survival rate of a four strain Salmonella cocktail in beef tallow, pig lard, duck fat, coconut oil, and extra virgin olive oil over seven days at 26˚C and 37˚C storage. The animal fats and the coconut oil...

Colorings of Hamming-Distance Graphs

Isaiah H. Harney
Hamming-distance graphs arise naturally in the study of error-correcting codes and have been utilized by several authors to provide new proofs for (and in some cases improve) known bounds on the size of block codes. We study various standard graph properties of the Hamming-distance graphs with special emphasis placed on the chromatic number. A notion of robustness is defined for colorings of these graphs based on the tolerance of swapping colors along an edge without...

Snow and Ice Removal Route Optimization in Kentucky

Benjamin L. Blandford, Erin Lammers & Eric R. Green
Each year the Kentucky Transportation Cabinet (KYTC) spends $40-$80 million removing snow and ice from the state’s roadways. Snow and ice removal are accomplished through a system of snow and ice removal routes that are designed to account for location and the attributes of trucks, facilities, materials, and roadways. To identify strategies that will improve and optimize KYTC’s snow and ice removal operations, Kentucky Transportation Center (KTC) researchers used ArcGIS and its Network Analyst extension...

Fluvial-Lacustrine Processes Shaping the Landforms of the Distal Paraguay Fluvial Megafan

Edward Limin Lo
Tropical wetlands such as the Pantanal help regulate global biogeochemical cycles, but climate change is modifying these environments. Controls on environmental changes can potentially be assessed from ancient, well-dated lacustrine sedimentary records. An integrated field and laboratory approach was undertaken to study the limnogeology of Lake Uberaba in the northern Pantanal, and test whether the lake has preserved a reliable record of environmental change in its strata. This study was designed to understand how the...

Charge Transport in Electronic-Ionic Composites

Long Zhang
The goal of this thesis is to generate fundamental understandings of charge transport behaviors of composites consisting of garnet structured Al substituted Li7La3Zr2O12 (LLZO) electrolyte and LiCoO2 electrode. In order to take full advantage of all-solid-state batteries, bulk type composite electrodes should be introduced to increase energy and power density. However, the charge utilization of bulk type composite electrodes is quite low. Understanding ionic conduction behavior is, therefore, important for improving the performance of all-solid-state...

An Experimental Investigation of the Effects of Self-Compassion and Self-Criticism on Implicit Associations with Non-Suicidal Self-Injury

Laura M. Nagy
Non-suicidal self-injury (NSSI) is the intentional destruction of bodily tissue in the absence of suicidal motives. NSSI is strongly associated with self-criticism (Gilbert et al., 2010) and individuals who self-injure often report doing so to punish themselves. Conversely, self-compassion, or the tendency to be caring with oneself, is associated with psychological well-being (Neff et al., 2007). The aim of the present study was to determine whether experimentally inducing self-criticism or self-compassion would lead to changes...

The Use of Lactobacillus salivarius L28 as a Bioprotective Culture in Dry Fermented Sausages

Kathy Flynt Collins
A challenge study to validate a 5 log10 CFU/g reduction of non-O157 Shiga-toxin producing Escherichia coli (STEC) in dry fermented sausage (DFS) was performed. A 4.49 ± 0.474 log10 CFU/g was achieved over two trials. The results indicated that the process was not effective in reducing the pathogen to the level required of most pathogens by the USDA. Lactobacillus salivarius L28 (L28) was screened in vitro for the ability to inhibit STEC utilizing the paper...

Advances in Multi-Agent Flocking

Brandon Wellman
We present multi-agent control methods that address flocking in continuous-time and discrete-time settings. The method is decentralized, that is, each agents controller relies on local sensing to determine the relative positions and velocities of nearby agents. In the continuous-time setting, each agent has double-integrator dynamics. In the discrete-time setting, each agent has the discrete-time double-integrator dynamics obtained by sampling the continuous-time double integrator and applying a zero-order hold on the control input. We demonstrate using...

Molecularly Imprinted Polymers Synthesized as Adsorbents for Ergot Alkaloids

Manoj B. Kudupoje
Alkaloid toxicities negatively impact livestock health and production and are of serious economic concern to animal industries. To date, few strategies have been developed to evaluate alkaloid levels in feed or to counteract alkaloid toxicities. The present research evaluated the applicability of imprinting technology to synthesize polymers that have potential to interact with ergot alkaloids and therefore reduce their bioavailability in the GIT. The studies also evaluated applicability of synthesized polymers for use in the...

Riding Through Life

Karin Pekarchik
Equestrian sport is a popular exercise choice for females of all ages, although the links between this exercise choice, health outcomes, and risk to health have not been thoroughly examined. These issues are of particular interest because the female equestrian has the opportunity to ride and/or compete for decades, from early to very late in life, covering almost the full sequence of the female lifespan. Equestrian sports provide physical activity through riding and caring for...

CAARS-S:L Infrequency Index Validation

Elizabeth R. Wallace
One obstacle to the accurate diagnosis of ADHD in college students is malingering, although many symptom self-report measures do not contain feigning validity scales. The Infrequency Index (CII) for the Conners’ Adult ADHD Rating Scale–Self-Report: Long Version (CAARS-S:L) was developed for this purpose, although further validation of the index is needed. Another topic of interest in ADHD malingering research is the increasing use of online assessments. Little is known about how ADHD is malingered in...

Effects of Participant Controlled Video Prompting on Novel Tasks in a Vocational Setting for Adults with Autism Spectrum Disorder

Amanda M. Hogue
The purpose of this study was to evaluate the effectiveness of teaching self-instructional skills to navigate to a mobile device to access video prompts to teach novel behaviors to two adults with autism spectrum disorder (ASD) in a vocational setting. This study used a multiple probe across conditions design to evaluate effectiveness. In baseline, the researcher directed the participants to complete a novel task and collected data on correct steps completed. In technology training the...

Investigation of an Axial Flow Rotary Valve Seal

Joseph K. Stieha
This thesis investigates potential materials to be used in the rotary sealing industry that provide low power loss and minimize cost. The studied rotary valve utilizes slots that act as timing valves to allow for flow axially, through the seal face, at particular times within a heat pump cycle. This investigation examines various combinations of multiple PTFE materials, plastics, and soft metals that have been proven to provide low friction coefficients. Leakage and wear requirements...

Optimism and Pain Interference in Aging Women

Stephanie T. Judge
Pain interferes with people's daily lives and often limits the extent to which they can pursue goals and engages in activities that promote well-being. The present study test how optimism affects and is affected by pain interference and activity among older women. Every three months for two years, middle- and older-age women (N = 199) complete daily diaries at home for a seven-day period, reporting their daily pain, pain interference, and activity. Optimism was measured...

Characterization of a Large Vertebrate Genome and Homomorphic Sex Chromosomes in the Axolotl, Ambystoma mexicanum

Melissa Keinath
Changes in the structure, content and morphology of chromosomes accumulate over evolutionary time and contribute to cell, developmental and organismal biology. The axolotl (Ambystoma mexicanum) is an important model for studying these changes because: 1) it provides important phylogenetic perspective for reconstructing the evolution of vertebrate genomes and amphibian karyotypes, 2) its genome has evolved to a large size (~10X larger than human) but has maintained gene orders, and 3) it possesses potentially young sex...

The School Food Environment and its Association with Dietary Intake Among Rural Adolescents

Hannah F. Hickey
The school food environment has the ability to increase the consumption of fruit and vegetables in rural adolescents. This study used a survey to allow adolescents in seven rural counties to self-report their fruit and vegetable intake as well as utilizing the USDA Mathematica tool and the School Nutrition and Meal Cost Study audits to evaluate what food and beverage products were actually available to adolescents. By using these two measures, associations between fruit and...

Survival and Cause-Specific Mortality of a Southeastern Kentucky Deer Population

Caleb Anderson Haymes
White-tailed deer are one of the most sought after game species in Kentucky. While much of the Commonwealth boasts high deer populations, those in southeast Kentucky are viewed as relatively low compared to other regions, even after a decade of restrictive doe harvest and multiple years of population supplementation via translocation. We studied survival and cause specific mortality of a local population of deer near the Redbird District of the Daniel Boone National Forest in...

Investigation of Polishing Methods and Surface Analysis After Machining AISI 4140 Alloy Steel

Qiang Qi
AISI 4140 alloy steel has been a very common material to be investigated in automotive and aerospace industries for several decades. AISI 4140 alloy steel is chromium, molybdenum, and manganese containing low alloy steel. It has high fatigue strength, abrasion and impact resistance, toughness, and torsional strength. The functional performance is largely determined by the surface states after machining. The aim of the present study is to explore the polishing methods and surface analysis after...

Adaptive Multi-Objective Operating Room Planning with Stochastic Demand and Case Times

Vivek Reddy Gunna
The operating room (OR) is accountable for most hospital admissions and is one of the most cost and work intensive areas in the hospital. From recent trends, we discover an unexpected parallel increase in expenditure and waiting time. Therefore, improving OR planning has become obligatory, particularly regarding utilization, and service level. Significant challenges in OR planning are the high variations in demand, processing times of surgical specialties, the trade-off between the objectives, and control of...

Pill Poppin’ Nation

Joi-Sheree' P. Knighton
The purpose of this dissertation was to examine substance use-related outcomes among criminal justice-involved African Americans using a multiple manuscript format. The Centers for Disease Control and Prevention has deemed nonmedical prescription opioid use an epidemic. National estimates indicate approximately 3.9% of African Americans engage in nonmedical prescription opioid use. Research suggests African Americans involved in the criminal justice system may be significantly at risk of substance use more generally; yet, there are no known...

A PHYSICS-BASED APPROACH TO MODELING A PHYSICS-BASED APPROACH TO MODELING WILDLAND FIRE SPREAD THROUGH POROUS FUEL BEDSWILDLAND FIRE SPREAD THROUGH POROUS FUEL BEDS

Tingting Tang
Wildfires are becoming increasingly erratic nowadays at least in part because of climate change. CFD (computational fluid dynamics)-based models with the potential of simulating extreme behaviors are gaining increasing attention as a means to predict such behavior in order to aid firefighting efforts. This dissertation describes a wildfire model based on the current understanding of wildfire physics. The model includes physics of turbulence, inhomogeneous porous fuel beds, heat release, ignition, and firebrands. A discrete dynamical...

SAFETY-BASED GUIDELINES FOR LEFT-TURN PHASING DECISIONS WITH NEGATIVE BINOMIAL REGRESSION

Kiriakos Amiridis
The efficient and safe movement of traffic at signalized intersections is the primary objective of any signal phasing and timing plan. Accommodation of left turns is more critical due to the higher need for balancing operations and safety. The objective of this study is to develop models to estimate the safety impacts of the use of left-turn phasing schemes. The models are based on data from 200 intersections in urban areas in Kentucky. For each...

THE CADENZAS OF THE FIRST MODERN GUITAR CONCERTOS

Carlos Ricardo Saeb Valenzuela
This research project explores the resources employed in the cadenzas of the first four distinguished guitar concertos of the twentieth-century. The purpose of this research is to establish the influence and impact of these works in the development of a new idiomatic guitar language. Although the first known twentieth-century guitar concerto is Rafael Adame’s Concierto Clásico (1930), it has been largely ignored and has had no significant influence on subsequent generations. Therefore, the focus of...

Establishment of American Chestnuts on Surface Mined Lands in Appalachian Coalfields Region

Michael E. French
American chestnut (Castanea dentata (Marsh.) Borkh.) was an dominant hardwood throughout eastern North America until the introduction of an exotic fungus (Cryphonectria parasitica (Murr.) Barr) in the early 20th century devastated American chestnut populations. Chestnuts that have been bred for blight resistance have recently become available for testing. Due to the overlap of American chestnut’s natural range and the Appalachian coalfields region, the potential establishment of founder populations of blight-resistant chestnuts on reclaimed coal surface...

Analysis of Autonomous Vehicle Policies

Bryan Gibson
The rapid development and adoption of connected and autonomous vehicles will transform the U.S. transportation system over the next 30 years. Although the widespread use of fully connected and autonomous vehicles is still several years away, it is nonetheless critical that legislators, policymakers, and regulators understand how the presence of these vehicles will restructure the operation of roadway networks. Without a doubt, lawmakers and policymakers will need to develop new laws — and revise existing...

Registration Year

  • 2017
    753

Resource Types

  • Text
    753

Affiliations

  • University of Kentucky
    1