Digital Commons Network^™

Testing The Message: Making Sense Of Converging Multimodal Messages In A Foodborne Illness Outbreak, Bethney A. Wilson

Theses and Dissertations--Communication

The goal of risk and crisis communication is to reduce and contain the harm inherent in a threat. In order to achieve this goal, risk and crisis scholars call for continued testing of messages surrounding these events; specifically, messages that address the needs of the at-risk message receiver. Previous scholarship suggests that these messages should include adapting and instructing information (Coombs, 2012), and should be designed using pedagogically sound instructional approaches (Frisby, Sellnow, Sellnow, Lane, & Veil, 2011; Sellnow & Sellnow, 2010). In order to meet this call, this dissertation tested an instructionally sound message that includes both adapting and …

Social Support In Young Adult Cancer Survivors And Their Close Social Network Members, Nicholas Thomas Iannarino

Theses and Dissertations--Communication

A cancer diagnosis often causes biographical disruption in the lives of young adult (i.e., 18-39; YA) survivors and their close social network members (i.e., familial, plutonic, or romantic relational partners with whom the survivor has a salient relationship; SNM). In order to integrate their illness into their lives, normatively regain balance and equilibrium, and achieve a “new normal” following a cancer diagnosis, YA survivors and their close SNMs must work to reconstruct their biographies by engaging in tangible interpersonal communication processes often used to initiate and maintain relationships. However, YA cancer survivors report facing social struggles due to the biographical …

Increasing Compliance With A Tobacco-Free Policy Via A Campus Campaign, Rachael A. Record

Theses and Dissertations--Communication

The implementation of a tobacco-free policy is the leading recommendation among health institutes for reducing the harms associated with tobacco exposure–for both smokers and nonsmokers–on college campuses. Despite the health benefits associated with tobacco-free policies, compliance with these policies remains a serious challenge on college campuses. Interventions aimed at increasing smokers’ willingness to comply with tobacco-free policies are essential for improving public health.

Guided by the theory of planned behavior (TPB), the purpose of this study was to (a) investigate the factors associated with tobacco-free policy compliance among undergraduate students and (b) design and evaluate a theory-based campaign aimed at …

Rat Hippocampal Responses Up To 90 Days After A Single Nanoceria Dose Extends A Hierarchical Oxidative Stress Model For Nanoparticle Toxicity, Sarita S. Hardas, Rukhsana Sultana, Govind Warrier, Mo Dan, Peng Wu, Eric A. Grulke, Michael T. Tseng, Jason M. Unrine, Uschi M. Graham, Robert A. Yokel, D. Allan Butterfield

Chemistry Faculty Publications

Ceria engineered nanomaterials (ENMs) have very promising commercial and therapeutic applications. Few reports address the effects of nanoceria in intact mammals, let alone long term exposure. This knowledge is essential to understand potential therapeutic applications of nanoceria in relation to its hazard assessment. The current study elucidates oxidative stress responses in the rat hippocampus 1 and 20 h, and 1, 7, 30 and 90 days following a single systemic infusion of 30 nm nanoceria. The results are incorporated into a previously described hierarchical oxidative stress (HOS) model. During the 1-20 h period, increases of the GSSG: GSH ratio and cytoprotective …

Ultra Clean Coal Production Using Dense Medium Separation For The Silicon Market, Seyed Hassan Amini

Theses and Dissertations--Mining Engineering

The production of high quality silicon requires the use of ultraclean coal containing less than 1.5% ash. The magnetite used to clean the coal in a dense medium process is a contaminant that seriously impacts the quality of the final silicon product. As such, research has been conducted to evaluate the potential to substitute the magnetite with fine silica–based alternative material generated during the silicon production process. Dense medium cyclone tests were performed based on a statistically designed program to determine the optimum conditions that maximize organic efficiency and minimize probable error and low–density bypass. The results revealed that a …

Gestational Form Of Supplemental Selenium (Se) Affects Steroidogenic Gene Expression In The Newborn Calf Testis, Stefani R. Garbacik

Theses and Dissertations--Animal and Food Sciences

Selenium (Se) is an important trace mineral in the diet of cattle. Our objective was to determine whether the form of supplemental Se fed to the dam would affect the expression of genes regulating steroidogenesis in the newborn testis. Twenty-four Angus-cross cows were assigned randomly (n=8) to individual ad libitum access of a mineral mix containing 35 ppm of Se supplied as sodium selenite (inorganic, ISe; Prince Se), Sel-Plex (organic, OSe; Sel-Plex, Alltech) or a 50/50 mix of ISe/OSe (MIX) 4 months prior to breeding and throughout gestation. All male calves were castrated within 2 days of birth and total …

The Acoustic Emissions Produced By Escherichia Coli During The Growth Cycle, Traci Jane Cox

Theses and Dissertations--Animal and Food Sciences

The objective of this study was to determine if acoustic emissions (AE) generated by three strains of Escherichia Coli (5024-parent strain, 8279-mutant strain and 8279-random/unrelated strain) could be used to differentiate each strain during their growth cycle. An acoustic sensor with an operating range of 35 kHz-100 kHz was inserted into the growth vessel and attached to a selected channel to capture AE data. The growth vessel was loaded with 60 ml of tryptic soy broth (TSB) (0.25% fructose) media with alginate (1.1%) or without alginate and inoculated with 1% (10⁸ CFU/ml) of an E. coli strain. The growth …

Modification Of Plasmonic Nano Structures' Absorption And Scattering Under Evanescent Wave Illumination Above Optical Waveguides Or With The Presence Of Different Material Nano Scale Atomic Force Microscope Tips, Gazi Mostafa Huda

Theses and Dissertations--Electrical and Computer Engineering

The interaction of an evanescent wave and plasmonic nanostructures are simulated in Finite Element Method. Specifically, the optical absorption cross section (C_abs) of a silver nanoparticle (AgNP) and a gold nanoparticle (AuNP) in the presence of metallic (gold) and dielectric (silicon) atomic force microscope (AFM) probes are numerically calculated in COMSOL. The system was illuminated by a transverse magnetic polarized, total internally reflected (TIR) waves or propagating surface plasmon (SP) wave. Both material nanoscale probes localize and enhance the field between the apex of the tip and the particle. Based on the absorption cross section equation the author …

Quantifiying The Effectiveness Of A Grout Curtain Using A Laboratory-Scale Physical Model, Elliot N. Magoto

Theses and Dissertations--Civil Engineering

In the past decade, the grouting industry has made significant technological advancements in real-time monitoring of flow rate and pressure of pumped grout, stable grout mix design, and with grout curtain concepts dealing with placement and orientation. While these practices have resulted in improved construction practices in the grouting industry, current design guidelines for grout curtains are still predominately based on qualitative measures such as engineering judgment and experience or are based on proprietary methods. This research focused on the development of quantitative guidelines to evaluate the effectiveness of a grout curtain in porous media using piezometric and hydraulic flow …

Let’S Play: Understanding The Role And Significance Of Digital Gaming In Old Age, Julie A. Skalsky Brown

Theses and Dissertations--Gerontology

Despite a marked increase in the use of digital games among older persons, there is insufficient research that provides insight into the gaming experiences of this population. A major demographic shift within the senior gaming market has ushered in a new perspective on the use of digital games as a tool for physical and cognitive health, and improved socialization. It is proposed that individual notions of play, which are developed over the life course, influence digital game play engagement and interaction preferences, and contribute to well-being. This study explored how self-perceptions of play over the course of the senior gamer’s …

Implementing The Food Safety Modernization Act: An Examination Of The Inequitable Impact Of The Proposed Preventive Controls And Produce Safety Rules, Ben Metzger

Kentucky Journal of Equine, Agriculture, & Natural Resources Law

No abstract provided.

The Human–Hookworm Assemblage: Contingency And The Practice Of Helminthic Therapy, Sophia Anne Strosberg

Theses and Dissertations--Geography

Through a qualitative analysis of the use of intestinal parasites for treating immune system disorders, this research illustrates how contingency emerges in the context of the human relationship to hookworms. The affect of the human–nonhuman relationship is an important part of understanding the direction of evolutionary medicine today, and has implications for the politics of biological health innovations. The shift from the bad parasite to a parasite that at least sometimes heals, discursively and materially, has opened new spaces for patients to change the way they relate to medical knowledge, medical professionals, and pharmaceutical companies. Hookworms are banned by the …

Entrepreneurial Planning And Urban Economic Development: The Case Of Establishing Commuter Rail In Orlando, Florida, Timothy J. Brock

Theses and Dissertations--Geography

Rooted in the theories of urban entrepreneurialism, this dissertation employs a political economy framework as a means of analyzing urban governance and economic development in the contemporary US city. This case study of Orlando adds to our understanding of how entrepreneurial narratives are being applied to transportation infrastructure projects in pursuit of local economic development.

The empirical case study explores the relationship between planning narratives, urban governance and economic development in the establishment of the SunRail commuter rail system in central Florida. I present the political history of economic development and the role of local boosters in shaping the sociospatial …

Pretreatment Of Scenedesmus Sp. Biomass As A Potential Anaerobic Digestion Substrate, Xinyi E, Czarena Crofcheck

Biosystems and Agricultural Engineering Faculty Publications

Algal biomass can be a potential substrate for anaerobic digestion. However, raw algae cells show a resistance to biological degradation, resulting in a slower methane production rate. Varying thermal and chemical pretreatments of algal biomass were investigated in an attempt to increase soluble organic matter (SOM) yield, which would result in enhanced methane production during subsequent anaerobic digestion. Scenedesmus sp. was harvested using three different procedures: with flocculation, with flocculation and drying, and without flocculation or drying. For all pretreatments and algae types, fluorescence micrographs were obtained to visually confirm the degradation of the algal cell walls. A complete 2 …

Needed Research On The Englishes Of Appalachia, Bridget L. Anderson, Jennifer Cramer, Bethany K. Dumas, Beverly Olson Flanigan, Michael Montgomery

Linguistics Faculty Publications

No abstract provided.

Factors Affecting School Health Scores: Wellsat Scores, School Policy, And The School Environment, Alicia Baker

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

A recent trend in school health intervention has been through policy creation and development. Studies have shown that changes in school health policy can improve student health behaviors, particularly in physical activity and nutrition. This study looked at how potential factors could affect the scores of a school policy assessment tool called the Wellness School Assessment Tool (WellSAT). Using a combination of t-tests, chi-square tests, and logistic regression, schools’ strength and comprehensiveness nutrition scores from the WellSAT were analyzed when compared to Free and Reduced Lunch Rates, type of school, and whether schools had separate policies from their school district. …

Evaluating Oral Health Trends In Kentucky, 2006-2012, Briana Michelle Forsythe

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

According to the former US Surgeon General, C. Everett Koop, “You’re not healthy without good oral health.” Poor oral health, comprising of the presence of caries and/or periodontal disease, can lead to edentulism, which in turn can yield poor physical health, inability to communicate properly, poor mental health, and a lesser quality of life. In Kentucky, over one quarter of the adult population has lost six or more teeth due to decay or gum disease, a figure 10% higher than the national average. Objectives: The purpose of this study was to examine: a) Kentucky’s Statewide Oral Health Strategic Plan, implemented …

Earthquake Risk In Indonesia: Parametric Contingent Claims For Humanitarian Response And Financial Institution Resiliency, Jason Hartell

Theses and Dissertations--Agricultural Economics

This dissertation explores the use of an index based contingent claims mechanism against earthquake risk in Indonesia. It focuses on time critical financing needs of international humanitarian relief organizations, and on efforts to improve the resiliency of geographically constrained financial institutions whose clientele are exposed to disaster risk. The approach uses measures of ground motion intensity as the basis for the index. The humanitarian response mechanism provides a new way for private sector partners to participate and gain visibility in their support of principled humanitarian funding. Index based contingent claims for local banks are shown to enhance their ability to …

Self-Reported Juvenile Firesetting, Carrie Howell Bowling, Hatim A. Omar

Pediatrics Faculty Publications

In this chapter we address gaps in existing research by examining the relationship between academic performance and attention problems with juvenile firesetting. Two datasets from the Achenbach System for Empirically Based Assessment (ASEBA) were used. The Factor Analysis Dataset (N = 975) was utilized and results indicated that adolescents who report lower academic performance are more likely to set fires. Additionally, adolescents who report a poor attitude toward school are even more likely to set fires. Logistic regressions were run to determine if attention problems predicted firesetting and the findings indicated that attention problems are predictive of self-reported firesetting. The …

Adolescent Health Issues, Joav Merrick, Ariel Tenenbaum, Hatim A. Omar

Pediatrics Faculty Publications

No abstract provided.

United States: Sexual Behavior In Association With Human Papilloma Virus Vaccination In Young Girls, Wafa R.R. Al Romaih, Said Shahtahmasebi, Hatim A. Omar

Pediatrics Faculty Publications

The first human Papilloma virus (HPV) vaccine was approved in the United States in 2006 with the potential to reduce cervical cancer and genital warts. Since then, its efficacy in preventing HPV-related cancers in both males and females has been promising. Despite CDC recommendations, opponents of the vaccine assert that vaccinating preadolescents and adolescents will increase their sexual activity, as well as overtly condone risky sexual behavior. We analyzed clinic data of 499 adolescents with a mean age of 16 years to explore whether vaccination led to change in sexual behavior after one year. Our results showed no statistically significant …

Dating Violence In Adolescence, Anuja Bandyopadhyay, Amit M. Deokar, Hatim A. Omar

Pediatrics Faculty Publications

Adolescent dating violence is a health and social problem, worldwide. The objective of this chapter was to identify the risk factors and consequences of dating violence, assess the prevention measures taken to increase awareness regarding it and provide an overview of the screening and interventional tools used to support the teens involved in dating violence. Methods: A review of the literature, published in the last 29 years, was conducted and the content was clinically analyzed. Conclusions: There is an increasing trend of dating violence in a younger population. Consistent definitions, comprehensive assessment tools and focused screening are required to assess …

A Grassroots Program For Youth Suicide Prevention: An Overview Of Participant Comments Following Stop Youth Suicide Conference, Stephanie Stockburger, Hatim A. Omar

Pediatrics Faculty Publications

No abstract provided.

Disability And Women's Health, Stephanie Stockburger, Hatim A. Omar

Pediatrics Faculty Publications

Children, adolescents, and women with disabilities experience the same sexual development, pubertal changes, concerns, and desire to reproduce as their typically developing counterparts. However, society has tended to stigmatize women with disabilities as "asexual" and ignore this aspect of their health care. These women are less likely to receive gynecological exams, contraception, and evaluation of sexual dysfunction. Unfortunately, having a disability places women at risk for sexual exploitation and abuse as well as sexually transmitted infections. Therefore, reproductive health care for these women is imperative. A number of barriers to receiving reproductive care exist. However, with proper education and knowledge …

Academic Predictors And Characteristics Of Self-Reported Juvenile Firesetting, Carrie Howell Bowling, Hatim A. Omar

Pediatrics Faculty Publications

The main purpose of this study was to address gaps in existing research by examining the relationship between academic performance and attention problems with juvenile firesetting. Two datasets from the Achenbach System for Empirically Based Assessment (ASEBA) were used. The Factor Analysis Dataset (N = 975) was utilized and results indicated that adolescents who report lower academic performance are more likely to set fires. Additionally, adolescents who report a poor attitude toward school are even more likely to set fires. Logistic regressions were run to determine if attention problems predicted firesetting and the findings indicated that attention problems are predictive …

Mrp1: A Target For Hematopoietic Stem Cell Diseases, Cassandra Reiling

Theses and Dissertations--Toxicology and Cancer Biology

Multidrug resistance-associated protein 1 (MRP1) is a member of the adenosine 5’-triphosphate (ATP)-binding cassette (ABC) transporters. MRP1 actively effluxes a variety of endogenous and exogenous substrates from cells, ultimately, working to remove these compounds from the body. MRP1 was initially discovered based on its ability to confer resistance against a variety of chemotherapeutics when overexpressed in cancer cells lines. MRP1 function is important for a number of physiological processes, including regulating cellular and extracellular levels of the anti-inflammatory leukotriene C4 (LTC4) and the antioxidant glutathione (GSH). Our studies have focused on the role of MRP1 in regulating hematopoietic stem cell …

The Effect Of Television Watching On Condom Use Among 9th-12th Graders, Rashidat Mohammed

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

Abstract: At least one out of every three youth will acquire a Sexually Transmitted Infection (STI) by the time they reach 25 years old. Although this may be caused by a variety of factors, sexually-charged media are believed to play a significant role. In television, there are more sexually inaccurate messages than there are portrayals of sexually responsible behaviors. These messages are not only unrealistic, but they could potentially have negative effects on adolescent sexual behavior. Among these negative effects is failure to use condoms. When used correctly, male condoms are about 98% effective. Recommendations are presented to help address …

Improvement Of Tobacco-Free Policy Enforcement At The University Of Kentucky, Muchen Bai

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

Smoking has been known as the leading preventable cause of death and premature disease in the United States (DHHS, 2014). Every year, cigarette smoking causes more than 480,000, approximately, one in five deaths (DHHS, 2014). According to the Centers for Disease Control and Prevention (CDC), "smoking causes more deaths each year than all of the listed combined: Human immunodeficiency virus (HIV), Illegal drug use, Alcohol use, Motor vehicle injuries, and Firearm-related incidents" (CDC, 2014). Since 1964, 31 Surgeon General's Reports have revealed the causal relationship between health outcomes and tobacco smoke exposure (DHHS, 2014). The report, The Health Consequences of …

Impact Of Routine Immunization Coverage In Controlling Measles And Progressing Toward The Introduction Of Rubella Containing Vaccine: A Comparison Study Between Rwanda And Uganda, Carmen Kupangi Dibaya

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

Despite the existence of safe and effective vaccines, measles and rubella present a major public health problem in many developing countries, disproportionally affecting low-income populations.1-3 Indeed, measles and rubella remain two of the leading causes of death and congenital defects in children worldwide.4-6 In 2008, an estimated 10 million new cases and 164,000 deaths were reported from measles alone.3 During the same time period, the United Nations International Children's Emergency Fund (UNICEF) reported an estimated 110,000 cases of Congenital Rubella Syndrome (CRS) in developing countries, with the continent of Africa shouldering 38% of the disease burden.7 Measles is a highly …

The Effects Of Embedding Formative Assessment Measures In A Problem--Based Learning Mathematics Curriculum For Middle School Students, Mark D. Butler

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

Student performance in the area of mathematics is a topic of national concern in the United States, with several reports documenting the need for effective instruction to boost student achievement. However, what type of math instruction will most effectively raise student achievement for students with disabilities (SWD) remains a matter of debate. Problem-based learning (PBL) is a promising methodology for engaging and motivating students’ learning while increasing their math skills. Enhanced Anchored Instruction (EAI) is a form of problem-based learning, rooted in a constructivist framework, which guides students through complex problems through video anchors and context rich environments that has …