953 Works

OPTIMAL SUPPLEMENTAL COVERAGE OPTION CROP INSURANCE DECISION FOR KENTUCKY COMMODITY CROP PRODUCERS

Jerzy Z. Jaromczyk
The 2018 Farm Bill has reopened commodity program enrollment for producers, and thus renewed interest in the Supplemental Coverage Option (SCO) of the Federal Crop Insurance Program (FCIP). This thesis examines the potential risk management benefits afforded to Kentucky corn, soybean and wheat producers by the SCO. A simulation model is used to rank downside-risk minimization of the common Multi-peril Crop Insurance Policies (MPCI) policies both with and without the SCO for various farm-level yield...

TRAINING FUNCTIONAL COMMUNICATION RESPONSES TO DECREASE CHALLENGING BEHAVIORS AMONG STUDENTS IN AN ALTERNATIVE EDUCATION SETTING

Kaitlin Haggard
This study answered a series of questions related to single case research design and potential use of functional communication-based intervention. It compared and contrasted multiple probe versus multiple baseline single case research designs, finding that multiple probe would be more appropriate to answer the intended research question. This study further analyzed the rigor, quality, and bias of Turton, Umbreit, & Mathur’s (2011) article in which functional communication-based intervention was used to decrease challenging behaviors among...

Training Music Therapists and Music Therapy Students to Provide Trauma-Informed Care

McKenna Wilson
Adverse childhood experiences are considered a serious public health problem and can lead to complex trauma. Due to the prevalence of adverse childhood experiences in the general population, it is likely music therapists frequently treat clients who have experienced trauma; however, there appears to be no published research on music therapy training and education regarding validated trauma-informed approaches. This study examined the impact of a three-hour educational training on music therapists’ knowledge of trauma-informed care...

TRACING SOURCE CONTRIBUTIONS TO ASSESS SPATIAL PATTERNS OF EROSION IN A MIXED LAND USE ENVIRONMENT

Cara Peterman
There is an inherent difficulty in predicting source contributions of fine-grained fluvial sediment in mixed land-use watersheds. Over a 56-week period, the spatial and temporal variability in sediment-source contributions and water quality was monitored at three sites along Otter Creek in Hardin and Meade counties, Kentucky (USA). The 203-km2 study area drains rural and agricultural lands and includes Fort Knox Army Post’s tracked-vehicle training areas. The main objectives for sediment source apportionment were to 1)...

BAYESIAN KINETIC MODELING FOR TRACER-BASED METABOLOMIC DATA

Xu Zhang
Kinetic modeling of the time dependence of metabolite concentrations including the unstable isotope labeled species is an important approach to simulate metabolic pathway dynamics. It is also essential for quantitative metabolic flux analysis using tracer data. However, as the metabolic networks are complex including extensive compartmentation and interconnections, the parameter estimation for enzymes that catalyze individual reactions needed for kinetic modeling is challenging. As the pa- rameter space is large and multi-dimensional while kinetic data...

STRUCTURAL AND LEXICAL METHODS FOR AUDITING BIOMEDICAL TERMINOLOGIES

Rashmie Abeysinghe
Biomedical terminologies serve as knowledge sources for a wide variety of biomedical applications including information extraction and retrieval, data integration and management, and decision support. Quality issues of biomedical terminologies, if not addressed, could affect all downstream applications that use them as knowledge sources. Therefore, Terminology Quality Assurance (TQA) has become an integral part of the terminology management lifecycle. However, identification of potential quality issues is challenging due to the ever-growing size and complexity of...

Geometry of Linear Subspace Arrangements with Connections to Matroid Theory

William Trok
This dissertation is devoted to the study of the geometric properties of subspace configurations, with an emphasis on configurations of points. One distinguishing feature is the widespread use of techniques from Matroid Theory and Combinatorial Optimization. In part we generalize a theorem of Edmond's about partitions of matroids in independent subsets. We then apply this to establish a conjectured bound on the Castelnuovo-Mumford regularity of a set of fat points. We then study how the...

THREE ESSAYS ON TRADE, ENVIRONMENT, AND HEALTH

Sookti Chaudhary
My dissertation consists of three essays on trade, environment and health. The first essay empirically evaluates domestic facilities' environmental response to Chinese import competition in the United States (US) manufacturing sector from 2000 to 2010. Using facility-level data on chemical emissions and employing an instrumental variables approach, the paper finds that industry/regional exposure to increased import competition had very little impact on the environmental decisions of domestic facilities. The second essay empirically explores a possible...

CHARACTERIZATION AND ENZYME ENGINEERING OF LACCASES TOWARDS LIGNIN VALORIZATION IN AQUEOUS IONIC LIQUIDS

Joseph Stevens
Lignin is one of the most abundant polymers found in nature, making up 15 – 40% of the weight of terrestrial biomass. Due to the structural and monomeric heterogeneity of lignin, it is recalcitrant thermochemical and biological valorization methods. Converting lignin to value-added products via sustainable and cost-effective pathways will reduce waste and add value to future cellulosic biorefineries. Biological methods for lignin valorization (e.g. lignin degrading enzymes or microbes) is limited by low lignin...

THE RELATIONSHIP OF SELF-ESTEEM ON PORNOGRAPHY VIEWERSHIP AND RELATIONSHIP SATISFACTION IN GERMAN COUPLES

Trenton McClure
The Relationship of Self-Esteem on Pornography Viewership and Relationship Satisfaction in German Couples. The current study aimed to examine the relationship between husbands’ and wives’ perceptions of self-esteem and relationship satisfaction as mediated through the frequency of pornography viewership at the individual and dyadic level. Using the VSA model, this study utilized the pairfam dataset, which is a nationally representative German sample. Data from 369 participants were analyzed using three structural equation models; a combined...

OPIOID USE IN VULNERABLE POPULATIONS

GYeon Oh
Opioid-related negative health outcomes, such as substance use disorder, misuse, and overdose deaths, have risen as long-term opioid use has increased. The benefit of using long-term opioids for pain is yet to be established. The Centers for Disease Control and Prevention provides guidelines for opioid prescribing in chronic pain, but detailed recommendations on opioid prescribing for vulnerable populations are missing due to lack of evidence-based studies. The purpose of this dissertation is to describe patterns...

APOE AS A METABOLIC REGULATOR IN HUMANS, MICE, AND ASTROCYTES

Brandon Farmer
Altered metabolic pathways appear to play central roles in the pathophysiology of late-onset Alzheimer’s disease (AD). Carrier status of the E4 allele of the APOE gene is the strongest genetic risk factor for late-onset AD, and increasing evidence suggests that E4 carriers may be at an increased risk for neurodegeneration based on inherent metabolic impairments. A new appreciation is forming for the role of APOE in cerebral metabolism, and how nutritional factors may impact this...

The Application of the Food Safety Modernization Act’s Produce Safety Rule for Produce Auctions

Mari Schroeder
Produce is a high-risk commodity that is associated with numerous foodborne outbreaks each year. The Food Safety Modernization Act’s Produce Safety Rule was designed to address these issues by requiring farms that grow, harvest, package, and/or hold produce to comply with science-based minimum guidelines. However, with the revival of the local food movement there is a subsequent flux in alternative food networks that handle produce but are not covered by this rule. Produce auctions represent...

Effect of Socioeconomic Factors on Kentucky Truck Driver Crashes

Nikiforos Stamatiadis, Shraddha Sagar, Samantha Wright & Aaron Cambron
Kentucky crash data for the 2015-2016 period reveal that per capita crash rates and increases in crash-related fatalities in the state outpaced the national average. To explain why the U.S. Southeast sees higher crash rates than other regions of the country, previous research has argued the region’s unique socioeconomic conditions provide a compelling explanation. Taking this observation as a starting point, this study uses an extensive crash dataset from Kentucky to examine the relationship between...

Essays on Economic Development Policies

Hakyeon Lee
Tax increment financing (TIF) policy is the most popular economic development policy in the United States. Despite the popularity of research on TIF, only a few comprehensive reviews of previous studies on TIF policy tool have been conducted. In light of this, the purpose of this paper is to review previous TIF studies relating to the controversy surrounding TIF programs. Specifically, previous studies do not provide clear answers about the efficacy of TIF and, indeed,...

DIFFERENTIAL EFFECTS OF DIGITAL VS. PRINT TEXT ON READING COMPREHENSION AND BEHAVIORS IN STUDENTS WITH ADHD

Lara Campbell
This study was conducted using a qualitative single-case, embedded design in a 4th grade elementary classroom with five participants. One purpose of this inquiry was to evaluate the differential effects between digital and print text on reading comprehension of literary texts on students with ADHD. A second purpose of this study was to evaluate and determine the differential effects reading digitally and from print have on specific off and on-task reading behaviors with these same...

Quantum Phases and Phase Transitions in Designer Spin Models

Nisheeta Desai
This work focuses on numerical studies of quantum spin systems. These simple models are known to exhibit a variety of phases, some of which have no classical counterpart. Phase transitions between them are driven by quantum fluctuations and the unconventional nature of some such transitions make them a fascinating avenue of study. Quantum Monte Carlo (QMC) is an indispensable tool in the study of these phases and phase transitions in two and higher dimensions. Nevertheless,...

ICTUS OR REBOUND? THE EXPERIENCE OF BEHIND-THE-BEAT PLAYING IN ORCHESTRAL CONDUCTING

Sey Ahn
The origin of playing behind-the-beat is attributed to the Hungarian conductor Arthur Nikisch (1855-1922), who is one of the most important figures in the history of the art of conducting. Nikisch, serving as Music Director of the Boston Symphony Orchestra, the Berlin Philharmonic, and the Leipzig Gewandhaus Orchestra during a critical moment in the development of orchestral playing, influenced a generation of conductors who followed. Behind-the-beat playing, as many conductors and musicians refer to in...

Supplemental Online Materials of Trends in Land Surface Phenology across the Conterminous United States (1982-2016) Analyzed by NEON Domains

Liang Liang, Geoffrey Henebry, lingling liu, Xiaoyang Zhang & Li-Chih Hsu
This research investigated land surface phenology trends across the conterminous United States (1982-2016)by National Ecological Observatory Network (NEON) domains. The Supplemental Online Materials (SOM) contain two Appendices. Appendix S1 contains NEON domain-specific results, supplemental tables and figures. Appendix S2 contains datasets of the analysis results. Users can utilize these data to perform customized analysis in lieu of the published outcomes.

MENTAL CONTAMINATION, COPING, AND PTSD SYMPTOM SEVERITY FOLLOWING SEXUAL TRAUMA

Jordyn Tipsword
Mental contamination (MC) – an internal sense of dirtiness experienced without contact with a contaminant – has been linked to PTSD symptoms among sexual trauma survivors. However, existing work has been limited to cross-sectional or quasi-experimental designs – precluding conclusions concerning the directionality of associations among PTSD symptoms and MC – and little work has examined potential mediators of those associations. The present study utilized a prospective design to evaluate the directionality of associations between...

REGULATORY NETWORKS DURING SEED DEVELOPMENT

Ran Tian
Seeds make up approximately 70% of the human diet directly so understanding regulatory mechanisms to generate a seed and the embryo it contains is fundamentally important. The LAFL genes encode transcription factors (TF) that are critical for seed development. Three members of LAFL, LEAFY COTYLEDON2 (LEC2), ABSCISIC ACID3 (ABI3) and FUSCA3 (FUS3), are B3 domain factors that bind DNA motifs called RY motifs. While LEC2 is expressed earlier in embryo development, ABI3 and FUS3 are...

DESIGN AND ANALYSIS OF A PAVEMENT MARKER DETECTION SYSTEM

Timothy Johnson
Personal injuries and property damage due to the failure of snow-plowable pavement markers which detach from pavement surfaces has led to the development of new all-plastic pavement markers which are located entirely below the planar surface of the pavement. The new all-plastic design pushes existing solutions used to avoid striping over highway reflectors into obsolescence since current solutions operate using electromagnets to sense the metal housings of snow-plowable pavement markers. A replacement solution is currently...

DERIVATIZATION OF STABLE, SOLUBLE REDOX-ACTIVE ORGANIC MATERIALS FOR NON-AQUEOUS REDOX FLOW BATTERIES

Thilini Suduwella
In screening active materials for redox flow batteries (RFBs) – in which solubility is important to raise the volumetric energy density – scientists are slave to trial and error, modifying organic molecules in an attempt to optimize (increase) solubility without compromising other important properties such as stability and redox potential. A trained chemist can often predict the trends of solubility with the structural modifications in the neutral state of the materials, but when it’s come...

FLUVIAL SEDIMENT ORGANIC MATTER DEGRADATION IDENTIFIED WITH ELEMENTAL AND ISOTOPIC FATE DURING LABORATORY INCUBATION

Brenden Riddle
Fluvial sediment is well recognized as a critical factor in both carbon and nutrient budgets within stream systems. However, we find very few studies of reactivity and isotope enrichment for stream water from agricultural and urban streams and the class of substrate known as fluvial sediment organic matter. This study investigated the hypothesis that fluvial sediment is subject to degradation even though many previous studies have considered this class of substrate generally inert. Therefore we...

Tolerance Intervals for Time Series Models and Specifying Trimming/Winsorizing Cutoffs

Kedai Cheng
Confidence intervals are used to capture a parameter of interest, usually a mean or a quantile, at a specified confidence level. Prediction intervals are another practical interval that aim at making sound predictions of future values with some confidence. Although these are useful inference tools, neither of them gives people a plausible range of the sampled population. Tolerance intervals are such an inference tool that captures a specified proportion of the sampled population at a...

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