Digital Commons Network^™

Three Essays On Food Safety And Private Food Safety Certifications, Lijiao Hu

Theses and Dissertations--Agricultural Economics

In the first essay, we provide a comprehensive literature review of the market of private food safety standards. Since the inception of private food safety standards in the late 1990s, producers, processors, retailers, and governments have been increasingly relying on them to provide assurances to food safety. This article first develops a conceptual framework for the market of private food safety standards through the lens of agri-food supply chain logistics, outlining how the key players in the market interact and classifying these interactions into fifteen categories. Second, we classify and review studies based on the interactions identified. Our review supports …

Mechanisms Of Programmed Nutrition In Finishing Cattle In Vivo And Ruminal Parameters Of Amaize Supplementation In Vitro, Amanda Pesqueira Schiff

Theses and Dissertations--Animal and Food Sciences

Programmed Nutrition Beef Program (Alltech Inc.) is a dietary supplement that contains Aspergillus oryzae fermentation extract with α-amylase activity that could reduce the use of feed additives such as monensin and tylosin in conventional feedlot diets. This study examines the changes in rumen fermentation resulting from feeding monensin/tylosin and Programmed Nutrition Beef Finisher. The goal was to determine if these shifts in rumen fermentation contribute to the Programmed Nutrition response observed in vivo. This study also analyzes how different levels of α-amylase (Amaize)supplementation impacts feedstuff degradation and utilization in vitro. In vivo experiment used eight steers in a replicated …

Consumer Measures Of Local Food System Performance And Shopping Behavior Across Covid, Azita Varziri

Theses and Dissertations--Agricultural Economics

This dissertation consists of three essays: In the first essay, we utilize a Principal Component Analysis (PCA) to measure the residents’ perceptions of the local food system performance. Local food system (LFS) components are classified into related measures that may help explain the overall performance scores provided. LFS performance measures are explored across 15 different communities in the U.S. South. The second essay explores the awareness and performance differences toward farmers markets, including the markets themselves and the corresponding local food product quality, product diversity, and markets infrastructure across different age-range groups and community sizes in Southern states. Finally, in …

Elucidating The Role Of Polycomb Repressive Complex 2 In Lung Stem Cell Fate And Lung Disease, Aria Byrd

Theses and Dissertations--Toxicology and Cancer Biology

The average human lungs take ~22,000 breaths and inhale ~2,000 gallons of air each day. This organ is the primary conduit for the transfer of oxygen to the internal organs, making it crucial for the sustainment of life. Consequently, mechanical malfunction of the lungs and/or pollution of inhaled air negatively impact internal organ function and ultimately put survival in jeopardy. Epigenetics, by nature, is a plastic phenomenon in which environmental stimuli influence short term, long term, and generational gene expression patterns. Chronic exposure of harmful stimuli to the lung epithelium has also been shown to alter epigenetic pathways, engender aberrant …

Sex Dimorphism In Hematopoiesis And Bone Marrow Niche, Xiaojing Cui

Theses and Dissertations--Toxicology and Cancer Biology

Hematopoietic stem cells (HSC), which are a rare population of cells existing in human circulating blood and bone marrow, can form the whole-blood system by their self-renewal capacity and differentiation ability. Sex dimorphism can be found in hematopoietic stem and progenitor cells, and in the development of hematopoietic lineages. Also, males are at higher risk and have a worse prognosis for most hematologic malignancies than females. Under normal conditions, the number of circulating progenitor cells in women is lower than in men. Furthermore, female mice have a higher rate of HSC division than male mice. A dramatic gender difference exists …

The Pet’S ‘Perfect Bowl’: Environmental And Welfare Discourse In Alternative Pet Food Movements, Carly Baker

Theses and Dissertations--Geography

Marketing ‘sustainable and humane’ super-premium dog kibble has emerged alongside alternative food movements (AFM). Unfortunately, super-premium pet-food comprised of ‘high-quality’ protein is at odds with sustainability and affect for particular animals. This study analyzed social and geographical (mis)representations of nonhumans in the pet-food commodity chain by tracing how knowledge and value is produced, and mapping the geography of Open Farm dog food. I assess these geographies and discourses and I identify the following: (1) sustainability claims focus on transportation and packaging, ignoring the significant environmental and social impacts of animal agriculture. (2) Images of farmed animals on packaging often do …

The Fantastic Debate: Religion, Ideology, And National Identity In The Short Fiction Of Nineteenth-Century Spain, Morgan Keith Stewart

Theses and Dissertations--Hispanic Studies

This dissertation analyzes fantastic short fiction in terms of its relationship to the traditionalist and progressive forces that were vying for hegemonic control over Spanish national identity in the ever-changing period of the nineteenth century, demonstrating how these powers shaped Spain’s past and future national character to suit ideologically driven narratives and revealing how fantastic literature can disrupt these narratives to unlock new patterns of thought. In Chapter 1, entitled “Fantastic Short Fiction and National Identity,” I delineate the historical/political circumstances that led to the rise of Spain’s dominant ideological frameworks. I also establish my own definition of the fantastic …

Maternal Occupational Exposure To Organic Solvents And Noise: Maternal Effects And Infant Outcomes, Kristen Van Buren

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

Introduction: Several maternal occupational exposures have not yet been studied for potential reproductive harm or have inconsistent findings in the literature. Despite the challenges, identification of potential risk factors, specifically reproductive toxicants, is necessary to mitigate and prevent adverse health outcomes for working mothers and their infants. The purpose of this study was to examine maternal occupational exposure to organic solvents and noise to small-for-gestational age (SGA) and preterm birth (PTB) among infants. Additionally, the study sought to examine maternal occupational exposure to noise and presence of gestational diabetes (GDM) and pregnancy-related hypertension among participant mothers.

Methods: The study population …

The Utilization Of Physical Literacy To Understand Physical Activity In Individuals With A History Of Anterior Cruciate Ligament Reconstruction, Rachel Renee Kleis

Theses and Dissertations--Rehabilitation Sciences

Injury to the anterior cruciate ligament (ACL) is common in physically active populations. Anterior cruciate ligament reconstruction (ACLR) is commonly performed after injury in order to restore joint stability and knee function and return patients to desired levels of physical activity. However, not everyone will return to their pre-injury levels of sport after surgery and recent evidence reveals that individuals with a history of ACLR are less likely to meet the recommended physical activity guidelines. Specifically, previous literature has reported that individuals with a history of ACLR take fewer daily steps and participate in less moderate-to-vigorous physical activity compared to …

Effects Of Adolescent Alcohol Exposure Via Oral Gavage On Adult Alcohol Drinking And Co-Use Of Alcohol And Nicotine In Sprague Dawley Rats, Cassie M. Chandler, Usman Z. Hamid, Sarah E. Maggio, Hui Peng, James R. Pauly, Joshua S. Beckmann, Kimberly Nixon, Michael T. Bardo

Psychology Faculty Publications

Background: Preclinical models simulating adolescent substance use leading to increased vulnerability for substance use disorders in adulthood are needed. Here, we utilized a model of alcohol and nicotine co-use to assess adult addiction vulnerability following adolescent alcohol exposure. Methods: In Experiment 1, adolescent (PND30) male and female Sprague-Dawley rats received 25% ethanol (EtOH) or a control solution via oral gavage every 8 h, for 2 days. In young adulthood, animals were tested with a 2-bottle choice between H20% and 15% EtOH or 0.2% saccharin/15% EtOH, followed by co-use of oral Sacc/ EtOH and operant-based i.v. nicotine (0.03 mg/kg/infusion) self-administration. In …

Perinatal Substance Use Disorders And Co-Occurring Posttraumatic Stress Disorder, Kaitlyn Dickens

DSW Capstone Projects

Pregnant and postpartum or perinatal women who experience Substance Use Disorder and Posttraumatic Stress Disorder (SUD/PTSD) co-occurring are an underserved population and a gap can be observed in the research in terms of clinical presentation and treatment of SUD/PTSD among this population. Social work practitioners are at an increased probability of working with individuals who would identify as such. There are many psychosocial and health factors associated with untreated SUD/PTSD among perinatal women for both mother and baby.

Research suggests that the use of client centered approaches and narrative therapy is beneficial in working with those who experience PTSD. The …

Clinical Interventions For Developmental Trauma Disorder: How Evidence-Based Practice And Attachment Theory Can Inform Therapeutic Approach, Victoria Deveau

DSW Capstone Projects

Approximately two-thirds of U.S. children and adolescents report having experienced a traumatic event. A posttraumatic stress disorder (PTSD) diagnosis requires that the youth has directly experienced a traumatic event, witnessed a traumatic event occur to others, or learned that a traumatic event has occurred to someone close. The clinician is in a diagnostic quandary, however, when the youth presents with the PTSD hallmarks of hyperarousal, avoidance, and emotional dysregulation, in absence of such life experiences. The answer to this quandary lies in an understanding of developmental trauma disorder (DTD). Clinical interventions for DTD are the focus of this capstone.

Product …

The Effects Of Mand-Model Within Shared Reading Activity On Naming Emotions, Paige Nicole Owens

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

There is a need for social communication skills to be explicitly taught to people with intellectual disabilities and complex communication needs. The use of naturalistic language interventions is an evidenced based practice shown to increase social communication skills in learners with disabilities. In addition, these interventions have proven successful when embedded into a storybook reading format. There is limited evidence when using both strategies to teach the skill of naming emotions. The purpose of this study was to determine the effectiveness of a mand-modeling procedure, during storybook reading, to teach middle schoolers with moderate and severe disabilities to name emotions …

Teaching Children To Use Interaction Strategies With Their Younger Siblings That Are Minimally Verbal, Abby Rucker

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

Children that are minimally verbal often lack same- or near-age peer interaction outside of the home environment. This study attempted to bridge that gap by training older siblings of minimally verbal children to use interaction strategies during play sessions. Through this, researchers were able to examine both the fidelity of use of the trained interaction strategies as well as their effect of the younger siblings’ communication skills.

Coaching And Training Paraprofessionals To Implement Communication Strategies In The Classroom With Students With Disabilities, Andrea Grace Antoniewicz

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

The purpose of this project was to evaluate the effects of a training and coaching intervention on increasing paraprofessionals use of communication strategies to increase the participation between students with disabilities and paraprofessionals. Students with CCN struggle to interact with peers and communicate appropriately, and therefore need guided instruction by adults. To encourage interactions across contexts, paraprofessionals must first learn how to use communication strategies. This skill also was chosen to extend our knowledge on coaching paraprofessionals to use different communication strategies to promote communication with students with ESN and CCN.

Covid-19, Chronic Stress, And Adolescent Mental Health, Corina Barker

DSW Capstone Projects

The COVID-19 pandemic has had an undeniable impact on adolescent mental health. Though not considered to be high risk when it comes to physically contracting the virus itself, adolescents have shown to be significantly impacted by the indirect effects of the pandemic. Because of the unique and formative time, this is in their lives, adolescents are already vulnerable to the impact of social stressors. Risk factors associated with the COVID-19 pandemic such as social isolation, disruption in routine, uncertainty, fear, and chronic stress have all proven to have a profound negative impact on adolescent mental health and overall well-being. It …

Assessing Veterans For Acquired Suicide Capability: Blocking The Intersection Of Desire And Ability, Jennifer Schneider

DSW Capstone Projects

The purpose of the capstone project was to identify a procedure to increase the number of lethal means safety encounters occurring with the veteran population. Ultimately, the capstone had a dual focus to address this goal, as the systematic literature review focused on a research question separate from the remaining papers.

The systematic literature review asked, “what are veterans’ perspectives of discussing firearm safety with healthcare providers?” Through the review process, and the utilization of a meta-ethnography approach, two third-order constructs were formulated. These constructs identified that veterans view the provider as responsible for trust and rapport development, in addition …

Examining The Impact Of A Protein Intervention To Improve Outcomes In Frail Perioperative Candidates: A Feasibility Study, Anna M. Rose

DNP Projects

Background: Frailty is a syndrome or grouping of clinical characteristics that collectively increases one’s vulnerability to acute and external health stressors. Higher rates of frailty are present in oncology surgical patients and is a predictor of postoperative complications, as well as increased morbidity and mortality. Long- and short-term survival of surgical oncology patients is worse in frail patients than robust patients. Prehabilitation interventions during the planning phase of surgical intervention may serve to mitigate already known health concerns prior to inflicting the stressor that is surgical intervention.

Purpose: To measure the feasibility of an educational prehabilitative nutritional intervention aimed at …

Characterizing The Internal Porous Structure Of Equine Proximal Sesamoid Bones Subjected To Race Training Using Fast Fourier Transforms, Joseph Erik Davis

Theses and Dissertations--Biomedical Engineering

The equine racing industry is one of the main proponents in Kentucky’s economic infrastructure. In this industry there has come a need to investigate the nature of the proximal sesamoid bone (PSB). Breakdowns involving the PSBs are the leading cause in racehorse deaths in the industry, with still little known about what causes this bone to fracture. This study seeks to shed insight by investigating the internal structure of the PSB. Using microCT scanning, the internal porous structure was captured. From there, noticeable differences in the pores were noticed and quantified using fast Fourier transform (FFT) analysis.

The dominant peak …

Sewer Vapor Intrusion Pathway: Simulation Of Indoor Piping Systems And Operation Of Aroma-Voc Gas Analyzer, Hong Cheng Tay

Theses and Dissertations--Civil Engineering

Vapor Intrusion (VI) is a transport phenomenon that occurs when contaminants migrate from sub-surface sources into indoor spaces. Sewer tunnels, plumbing connections, and piping infrastructures can be important contributors to an increased potential of VI in a site, which results in indoor concentrations of volatile organic compounds (VOC). In the present work, the topic of sewer VI pathways were investigated through a prototype made from various types of indoor plumbing pipe fittings. This prototype simulates indoor piping systems and determine whether air and VOC were escaping through the pipe fittings. Moreover, this study is the first effort to use a …

Investigation Of Pfas Exposure Risks In Kentucky Using Mapping Tools, Sweta Ojha

Theses and Dissertations--Civil Engineering

Per- and polyfluoroalkyl substances (PFAS), a group of environmentally-persistent compounds, are environmentally ubiquitous and challenging to remediate. Several studies show that PFAS are detected in drinking water systems when sampling is conducted, making human exposure via drinking water an important health consideration. This research: 1) develops a mapping tool for prioritizing sampling locations; 2) establishes a method for making GIS data and meta(data) in the mapping tool accessible; 3) fosters decision making by integrating knowledge brokering and the alignment interest and influence matrix (AIIM). The tool developed is this research is a geospatial and statistical PFAS hot-spot screening model that …

Understanding The Differences Between Industry Objectives And Institutional Learning, Kristen Schell

Theses and Dissertations--Civil Engineering

To combat understaffing in the construction industry, it is necessary to employ the best candidates possible. By identifying the most desirable skills in a construction employee from an industry perspective, institutional learning can better prepare graduates for the construction workforce. Currently there exists an information gap in the objectives of the construction industry and institutional learning. This gap produces graduates, professors, and employers with expectations that do not align. Reducing this gap will aid in the success of hiring recently graduated construction students who can meet the ever-changing demands of the industry. Construction students who are fresh out of college …

"Wearing A Mask To Each Other": Masculinity & The Public Eye In Victorian Sensation Fiction, Shannon Branfield

Theses and Dissertations--English

Sensation fiction, as a genre, offers a field to explore the ways in which ideologies of masculinity are negotiated, contested, and enforced. The Victorian man has no respite from social surveillance; the public is always watching, always evaluating the performance. As these sensation fiction novels build on each other, a portrait of male claustrophobia in response to unceasing surveillance is revealed. The pressure this constant scrutiny puts on Victorian men is immense and sensation novels derive many thrilling plot twists from the dramatic lengths men to which men must go to protect themselves from this gaze. These habits persist even …

How To Live Life All The Way Up Learning Life Skills From Literary Characters, Sue N. Mize

Theses and Dissertations--English

In this essay, using the theories of psychiatrist, Eric Berne and his script theory; psychoanalyst, Carl Jung and his archetypes and mandalas; as well as the Native American Medicine Wheel; and the Hindu notion of the kundalini, I analyze the psychological development of Adele Quested of E.M. Forster’s A Passage to India (1924) and Anna Wulf of Doris Lessing’s The Golden Notebook (1962). Adela Quested goes to India seeking the real India and while engaging the archetype of the Lover discovers her real Self. While in India she metaphorically walks the Medicine Wheel and discovers that to be …

Warriors, Mothers, And Queens: Weighty Women Of Myths And Legends, Betsy Packard

Theses and Dissertations--English

Because traditional stories, myths, and legends have a patriarchal orientation, often portraying women as negative or weak characters, post-modern literary criticism calls for a feminist response. These poems are written in the genre of feminist revisionist mythology. Through the medium of poetry, women in these stories are provided with voices outside of the previously accepted patriarchal framework and challenge the exclusionary theories of Joseph Campbell. The stories are told through a perspective informed by feminist theory.

The Reflective Age: Nostalgia At The End Of History, Zachary Griffith

Theses and Dissertations--English

This project investigates the ways in which nostalgic American media of the last decade reflects the sociopolitical conditions of the end of history. It begins with the assertion that the end of history represents a confounded, contradictory moment in which large-scale political change is relatively scarce, and belief in a progressive future has largely been abandoned, while cultural change has also accelerated at a pace never before seen––spurred on, in particular, by the constant return of dead styles and dormant IP. In other words, it seems as if nothing is changing and everything is changing simultaneously. The recent boom in …

Fantasies Of Race And Place: White Nationalist And Alt-Right Undercurrents In Fantasy Roleplaying Games, Mark Hines

Theses and Dissertations--English

Representations of fantasy settings in roleplaying games often draw upon understandings of the medieval and early Renaissance world. This dynamic often extends to racial politics in such worlds. For the contemporary roleplaying game, this often means that game mechanics are built around race, species, or gender. Often, players interpret such mechanics as a means of bioessentializing race or practicing stereotypes rooted in Eurocentric morality and values.

This thesis examines the underlying rhetoric and implicit stakes by which race in fantasy worlds overlaps with the rhetoric and proposed stakes of White Nationalist and Alt-right actors. As fantasy roleplaying games, and especially …

Fleshcrawl, Shanita Jackson

Theses and Dissertations--English

I am fascinated with the spiritual, physical, and psychological experiences that occur when one’s flesh crawls. The experiences, akin to inverted goosebumps, result from provocations of the senses or of the mind. James Blake’s latest album, for example, triggers my flesh to crawl. The art on the album cover depicts a decaying body turned into a canyon-like labyrinth. In undergrad, attempts to conceptualize slave-deck diagrams disturbed my flesh to crawl. I am intrigued by how anxiety, epigenetics, and superstition all factor into the subjective intensities of this collective experience. As it seems, circumstance heightens the severity and frequency of the …

Investigating The Role Of Chd7 And Sox11 In Retinal Cell Development And The Ocular Complications Of Charge Syndrome, Laura Krueger

Theses and Dissertations--Biology

Proper formation of the visual system requires the precise interaction of several embryonic cell lineages, including the neuroectoderm (forms the retina and retinal pigment epithelium), surface ectoderm (forms the lens), mesoderm and cranial neural crest cells (form the ocular blood vessels and anterior ocular structures). When this process is disrupted structural birth defects such as coloboma result, leading to pediatric visual deficits. Ocular developmental defects are often present in larger syndromic disorders. One example is CHARGE syndrome, a genetic disorder characterized by coloboma, heart defects, choanal atresia, growth retardation, genital abnormalities, and ear abnormalities. Pathogenic variants in CHD7 have been …

Metabolic Diversity Among Fibroblasts From Regenerating And Non-Regenerating Mammals, Ebenezer Aryee

Theses and Dissertations--Biology

Regeneration is a wound repair process that terminates in the restoration of tissue function and structure. Fibroblasts play pivotal roles in regenerative and fibrotic wound repair. Reports of extensive regenerative ability in mammals have been historically rare, but more recently spiny mice (Acomys) have emerged as a bona fide model of complex tissue regeneration. Recent work has indicated that fibroblasts from regenerators (Acomys and Oryctolagus) are more resistant to reactive oxygen species (ROS)-induced senescence compared to non-regenerating species, suggesting the influence of intrinsic cellular states on the fate of wound repair. Determining the basal metabolic signature …