Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network

Open Access. Powered by Scholars. Published by Universities.®

Articles 1 - 30 of 262

Full-Text Articles in Entire DC Network

The Role Of Cathelicidin In The Regulation Of Gut Microbiota And Inflammasome Activation In Alcoholic Liver Disease., Fengyuan Li Dec 2018

The Role Of Cathelicidin In The Regulation Of Gut Microbiota And Inflammasome Activation In Alcoholic Liver Disease., Fengyuan Li

Electronic Theses and Dissertations

Alcoholic liver disease (ALD) is characterized by gut dysbiosis and hepatic and intestinal inflammation. Gut microbiota is critically maintained by antimicrobial peptides (AMPs) expressed in the epithelial and immune cells. AMPs are also identified as immune-regulators in various diseases. Previous studies demonstrated that deficiency of AMPs REG3 lectins exacerbated alcoholic steatohepatitis. LL-37 is the sole member of human cathelicidin AMP family, named CRAMP in mouse. Despite of the extensive studies in infectious diseases and in gut-microbiota-related inflammatory bowel disease, the role of LL-37/CRAMP in ALD is yet unknown. Our previous studies showed a decreased intestinal CRAMP in a mouse model …


Frederic Lindley Morgan : Gentleman Architect And Reluctant Modernist., Lisa Grace Carpenter Dec 2018

Frederic Lindley Morgan : Gentleman Architect And Reluctant Modernist., Lisa Grace Carpenter

Electronic Theses and Dissertations

Frederic Lindley Morgan, a major architect in Louisville,Kentucky, was born in Loda,Illinois in 1889. Morgan, in partnerships with other architects throughout his career, designed a variety of projects including homes, schools, churches, commercial buildings and even an airport. Morgan worked up until he died, in 1970, in Louisville. What makes Mr.Morgan's work distinctive is not the timelessness of his designs, nor the fact he was dubbed "Louisville's society architect," nor his lengthy 50 plus year career. Morgan had the ability to take his training, in combination with his talent and savvy business sense, and work successfully in a variety of …


Fostering Compassionate Care For Persons With Alzheimer's Disease In Nursing Facilities., Sam Gilbert Cotton Dec 2018

Fostering Compassionate Care For Persons With Alzheimer's Disease In Nursing Facilities., Sam Gilbert Cotton

Electronic Theses and Dissertations

The aim of this dissertation study was to examine the impact of the implementation of a new Compassionate Care (CC) curriculum on the quality of care provided by Certified Nursing Assistants (CNAs) to residents with Alzheimer’s disease (AD). More specifically, this dissertation used Kirkpatrick’s model of evaluation to assess the reactions, learning, and behavior change of the CNAs exposed to the curriculum, and ultimately the impact of the curriculum on the stress levels of residents with AD. To accomplish this, we had two studies that aligned with the Kirkpatrick model of evaluation. For Study #1, the evaluation of the compassionate …


The History And Signification Of The Navicella Mosaic At St. Peter's Basilica, Rome., Eston Dillon Adams Dec 2018

The History And Signification Of The Navicella Mosaic At St. Peter's Basilica, Rome., Eston Dillon Adams

Electronic Theses and Dissertations

The Navicella mosaic is most famously an artwork created by Giotto di Bondone. Evidence for the appearance and dating of this giant mural is discussed in this dissertation with the conclusion that it was made in 1298 and its composition is best recorded in a Parri Spinelli drawing preserved in the Musée Condé in Chantilly, France. It was admired by untold numbers of worshipers who visited the grand Constantinian basilica of Old St. Peter’s in the Vatican in Rome. The Navicella was located on the façade of Santa Maria in the Towers, an important chapel as well as the gatehouse …


Stalkers : What Are They Thinking?, Bethany Lynne Keller Dec 2018

Stalkers : What Are They Thinking?, Bethany Lynne Keller

Electronic Theses and Dissertations

Stalking became a prominent term in U.S culture in 1990 after a celebrity was murdered by a stalker in 1989. While media portrays stalking as a violent crime, often directed towards celebrities and prominent political figures, this is a much more common occurrence than people are aware, most often directed at women and perpetrated by men. Stalking often consists of the milder end of the continuum of behaviors, such as spying and leaving gifts for the target, and is often perpetrated by an individual the target knows, such as an acquaintance of an ex-intimate. Forty-eight percent of stalkers fall in …


Process-Property-Microstructure Relationships In Laser-Powder Bed Fusion Of 420 Stainless Steel., Subrata Deb Nath Dec 2018

Process-Property-Microstructure Relationships In Laser-Powder Bed Fusion Of 420 Stainless Steel., Subrata Deb Nath

Electronic Theses and Dissertations

Laser-powder bed fusion (L-PBF) is an additive manufacturing technique for fabricating metal components with complex design and customized features. However, only a limited number of materials have been widely studied using L-PBF. AISI 420 stainless steel, an alloy with a useful combination of high strength, hardness, and corrosion resistance, is an example of one such material where few L-PBF investigations have emerged to date. In this dissertation, L-PBF experiments were conducted using 420 stainless steel powders to understand the effects of chemical composition, particle size distribution and processing parameters on ensuing physical, mechanical and corrosion properties and microstructure in comparison …


Innate Immunity, The Hepatic Extracellular Matrix, And Liver Injury: Mathematical Modeling Of Metastatic Potential And Tumor Development In Alcoholic Liver Disease., Shanice V. Hudson Dec 2018

Innate Immunity, The Hepatic Extracellular Matrix, And Liver Injury: Mathematical Modeling Of Metastatic Potential And Tumor Development In Alcoholic Liver Disease., Shanice V. Hudson

Electronic Theses and Dissertations

The overarching goals of the current work are to fill key gaps in the current understanding of alcohol consumption and the risk of metastasis to the liver. Considering the evidence this research group has compiled confirming that the hepatic matrisome responds dynamically to injury, an altered extracellular matrix (ECM) profile appears to be a key feature of pre-fibrotic inflammatory injury in the liver. This group has demonstrated that the hepatic ECM responds dynamically to alcohol exposure, in particular, sensitizing the liver to LPS-induced inflammatory damage. Although the study of alcohol in its role as a contributing factor to oncogenesis and …


The Unequal City: The Mass Criminalization Of The Urban Poor., Elizabeth Michele Jones Dec 2018

The Unequal City: The Mass Criminalization Of The Urban Poor., Elizabeth Michele Jones

Electronic Theses and Dissertations

Exploring and understanding the widespread use of arrests and incarceration in urban neighborhoods of concentrated poverty is the subject of this dissertation. The research addresses gaps in theoretical debates about the causes of mass criminalization that position the phenomenon as the result of either neoliberalism or racism. In addition, the dissertation explores the impact of mass criminalization on urban citizenship. Urban citizenship is a theoretical frame that considers the substance of the economic, social, political, and mobility dimensions of city life. The research methodology is a case study of two impoverished neighborhoods in the city of Louisville, Kentucky that incorporates …


Sexual Violence And The Institutional Integration Of First Year College Students., Ann Katherine James Dec 2018

Sexual Violence And The Institutional Integration Of First Year College Students., Ann Katherine James

Electronic Theses and Dissertations

This purpose of this study is to explore the relationships among identity, sexual violence, reporting choices, perception of campus climate and institutional integration. Student affairs professionals and other educators are particularly concerned about the effects of sexual violence on college students because of the deleterious effects that such violence has on factors critical to student success. Research indicates that 1 in 5 students will experience actual or attempted sexual assault while in college (Fisher, 2000). Students with greater levels of social and academic integration have a greater commitment to their college or university and thus graduate at higher rates (Tinto, …


Identification And Functional Characterization Of Effectors From An Anther Smut Fungus, Microbotryum Lychnidis-Dioicae., Venkata Swathi Kuppireddy Dec 2018

Identification And Functional Characterization Of Effectors From An Anther Smut Fungus, Microbotryum Lychnidis-Dioicae., Venkata Swathi Kuppireddy

Electronic Theses and Dissertations

Microbotryum lychnidis-dioicae causes anther smut fungus in its host plant, Silene latifolia. The goal of this work is to identify and characterize the virulence determinants of this pathogen to better understand the molecular basis behind this host-pathogen interaction. This work studied for the first time the key effectors in the mechanism of infection by this fungal species. Using, yeast two-hybrid screens, I have identified the host plant interaction partners for the effector, MVLG_01732. A second effector MVLG_05720, interacts with other fungal proteins that appear to facilitate the fungal establishment and colonization during the infection. Our findings indicate that a …


Student Voices: African American High School Seniors' Perception Of Culturally Responsive Teaching., Whitney M. Stewart Dec 2018

Student Voices: African American High School Seniors' Perception Of Culturally Responsive Teaching., Whitney M. Stewart

Electronic Theses and Dissertations

This dissertation examined African-American high school seniors’ perceptions of culturally responsive teaching in one public high school within a large urban public-school district in the southeastern region of the United States. It begins with a brief historical overview on the plight of African-Americans in the US public education system and how public school educators have failed to leverage Afrocultural learning orientations as an asset to educate and increase the academic achievement of African-American students in classrooms. The Philosophical Aspects of Cultural Difference Framework (Nichols, 1986, 1995) will guide this dissertation study. The latter part of the dissertation reveals that a …


Conquerors Or Cowards: The Role Of The Kentucky Mounted Militia In The Indian Wars From 1768 To 1841., Joel Anderson Dec 2018

Conquerors Or Cowards: The Role Of The Kentucky Mounted Militia In The Indian Wars From 1768 To 1841., Joel Anderson

Electronic Theses and Dissertations

The thesis argues that Kentuckians developed the myth that the Kentucky Mounted Volunteers were the most effective troops to fight Native American warriors in the Northwest Indian War of 1790 to 1794 and the War of 1812. The idea that these troops were the best fighters originated in the decades following the War of 1812 as Kentuckians generated a communal history. Residents of the state listened to orators mythologize the successes of mounted Kentuckians in battle, while remembering the foot militia for their sacrifices rather than their shortcomings.


Exploring The Knowledge Of Algebra For Teaching., Jonathan David Watkins Dec 2018

Exploring The Knowledge Of Algebra For Teaching., Jonathan David Watkins

Electronic Theses and Dissertations

For the past few decades, researchers in mathematics education have been exploring the concept of pedagogical content knowledge (PCK)—or knowledge related to teaching content—and applying it to various areas of mathematics, such as algebra. Research related to teacher knowledge of algebra is critical because researchers (e.g., Hill, Rowan, & Ball, 2005) have found correlations between some types of teacher knowledge and student achievement in mathematics; students from around the world are outperforming U.S. students on international assessments of mathematics, including algebra (Organization for Economic Cooperation and Development, 2014, 2016); and algebra plays an integral role in the K-12 mathematics curriculum …


Framing Climate Change As National Security: A Survey-Experiment On Climate Change Perceptions., Adam Lyons Dec 2018

Framing Climate Change As National Security: A Survey-Experiment On Climate Change Perceptions., Adam Lyons

Electronic Theses and Dissertations

The issues surrounding climate change continue to have polarizing effects on many Americans. In this thesis I offer a potential bridge to this divide with a comprehensive study on how issue frames can impact how individuals shape their opinions on environmental issues. Focusing on a national security frame, I ask the central research “Will the public perceive issues of climate change differently when they are framed as threats to national security?” For this thesis I design an original experimental survey to measure the impact security framing has on participants’ perception of both climate change and environmental policy options. The survey …


Low Temperature Desiccants In Atmospheric Water Generation., Sunil Gupta Dec 2018

Low Temperature Desiccants In Atmospheric Water Generation., Sunil Gupta

Electronic Theses and Dissertations

Surging global water demand as well as changes to weather patterns and over exploitation of natural water sources, such as ground water, has made potable water a critical resource in many parts of the World already – one rapidly heading towards a crisis situation. Desalination has been adopted as a solution – this is however energy intensive and impractical for most of the developing countries - those most in need of water. A renewable source of energy is solar thermal and solar photovoltaic. A plentiful source of water is the humidity in the atmosphere. This research is to push the …


Characterization Of Microreactor And Analysis Of Carbonyl Compounds In Exhaled Breath., Qi Li Dec 2018

Characterization Of Microreactor And Analysis Of Carbonyl Compounds In Exhaled Breath., Qi Li

Electronic Theses and Dissertations

Analysis of trace volatile organic compounds at parts per billion (ppbv) to parts per trillion (pptv) level has become an important research frontier because of the applicability for environmental monitoring and noninvasive diagnosis of diseases. The methods of preconcentration for detection of trace aldehydes and ketones both in ambient air and human exhaled breath have increased considerably over the last decade. However, the majority of these methods are not efficient. In this dissertation, we have improved an innovative microreactor that is suitable for quantitative analysis of volatile carbonyl compounds (VOCs) in ambient air as well as in human exhaled breath. …


Deindustrializing School : The Implementation Of Career Academies And Implications For School Leaders., Terra Greenwell Dec 2018

Deindustrializing School : The Implementation Of Career Academies And Implications For School Leaders., Terra Greenwell

Electronic Theses and Dissertations

Rooted in an antiquated curriculum, the traditional model of schooling remains a persisting factor in student disengagement at all levels, but especially in high school (Labaree, 2008). At a time when college and career readiness is vital to a school’s accountability, principals must rethink ways to educate a diverse student population. Given the need to provide both academic and vocational aspects, career academies create career-themed small learning communities in an effort to increase student engagement, belonging, and post-secondary success. This study uses a multiple case study design to explore the much-needed perspective of high school principals as they collectively implemented …


North American Indigenous Collection And Curation And Its Impact On Market Arts., Adelaide Mccomb Dec 2018

North American Indigenous Collection And Curation And Its Impact On Market Arts., Adelaide Mccomb

Electronic Theses and Dissertations

This thesis examines the history of two North American Indigenous groups, those belonging to the Great Plains and the Arctic, and observes how settler-colonial influence determined the collection and curation of arts and artifacts in these areas. This art includes a mention of pre-Colombian works, but focuses predominantly on works being made after “first-contact” through the contemporary ear. The paper addresses the effect imperialist history has had on the development of Indigenous art markets, and how institutions such as museums may address them through ethical practices, and efforts to decolonize museum spaces.


Microaggressions In Lgb Individuals: The Protective Role Of Positive Lgb Identity., Ghazel Tellawi Dec 2018

Microaggressions In Lgb Individuals: The Protective Role Of Positive Lgb Identity., Ghazel Tellawi

Electronic Theses and Dissertations

The purpose of the current study was to examine LGB identity from a multidimensional approach in the context of microaggressions. The aims of the study were as follows: 1) to examine whether positive and negative facets of LGB identities are correlated; 2) to determine whether positive LGB identity facets served as protective factors against the negative impact of microaggressions; 3) to explore the unique contribution of having a positive LGB identity against the negative impact of microaggressions when compared to other protective factors (social support and outness). Participants were 135 undergraduate students recruited through the University of Louisville’s research participant …


Evaluation Of The Predictive Ability Of A Screening Instrument Used To Diagnose Co-Occurrence Of Anxiety In Children With High-Functioning Autism., Austin Zachary Dec 2018

Evaluation Of The Predictive Ability Of A Screening Instrument Used To Diagnose Co-Occurrence Of Anxiety In Children With High-Functioning Autism., Austin Zachary

Electronic Theses and Dissertations

Anxiety has shown to have a high co-occurrence in children with Autism Spectrum Disorder (ASD), but has been difficult to co-diagnose. This study analyzed the ability of the Screen for Child Anxiety-Related Emotional Disorders (SCARED) to predict positive ASD screenings of the Social Responsiveness Scale (SRS). Parents and children ages 8 to 18 years (N = 100) were screened for anxiety using the SCARED and autism using the SRS. Moderate correlation was found between parent-reported SCARED and positive screening of the SRS (r = .579), with weak correlation found in the child-reported SCARED (r = .105). LASSO regression was conducted …


Effect Of Grape Components On Periodontal Disease., Juili Subodh Shivde Dec 2018

Effect Of Grape Components On Periodontal Disease., Juili Subodh Shivde

Electronic Theses and Dissertations

Background: Half of the adult American population (47 %) are victims of periodontitis, a chronic inflammatory disease which leads to destruction of the tissues supporting the tooth. Periodontitis is initiated by periodontal pathogens and caused by excessive or prolonged host mediated inflammation. Porphyromonas gingivalisis one important agent implicated in the etiopathogenesis of chronic periodontitis. Pro-inflammatory cytokines induced by periodontal pathogens can cause alveolar bone loss and periodontitis. Bone loss is caused by the imbalance of bone formation and bone resorption. Osteoclasts are major cells that cause bone resorption. Moreover, periodontal inflammation also leads to bone resorption. Grapes are rich …


"Why Am I In School?": A Mixed Methods Investigation Into Stopping Out Of College., Kathryn Gardner Adamchik Dec 2018

"Why Am I In School?": A Mixed Methods Investigation Into Stopping Out Of College., Kathryn Gardner Adamchik

Electronic Theses and Dissertations

Higher education research often looks at student retention as a dichotomous outcome, either students stay enrolled or not; however, students’ enrollment pathways are more complicated than that as they frequently transfer, swirl between institutions, and stopout and return. This study was designed to explore students who stopout and return to the same institution within their six-year graduation window. More specifically, I sought to learn who stops out, why they stopout, what happens while out, why they come back, and what may be different upon their return. Four conceptual frameworks were applied to understand students’ experiences with stopping out including Tinto’s …


Counter Narratives: A Phenomenological Study Of High Achieving African American Male High School Students., De'nay Lanise Speaks Dec 2018

Counter Narratives: A Phenomenological Study Of High Achieving African American Male High School Students., De'nay Lanise Speaks

Electronic Theses and Dissertations

This dissertation examined the contributing factors to the success of high achieving African American male high school students who attend an all-male, predominantly Black, college-preparatory academy. The study took place in an urban, Midwestern school district and highlighted the lived experience and perspectives of students who have at least a 3.0 grade point average. Through the lens of Critical Race Theory, this study was an effort to bring attention to counter narratives to the otherwise deleterious image portrayed of African American males. The history and plight of the African American male is included to provide a comprehensive understanding of the …


Exploring The Capabilities Approach In A Sport For Development And Peace Setting., Jeffrey F. Levine Dec 2018

Exploring The Capabilities Approach In A Sport For Development And Peace Setting., Jeffrey F. Levine

Electronic Theses and Dissertations

Sport for Development and Peace (SDP) has become a popular approach to development. However, critical scholars remain skeptical of SDP’s effectiveness. Utilizing a holistic approach that includes local voices may help a program’s effectiveness. Scholars are searching for a framework flexible enough to accommodate the varied nature of programs. One theoretical approach is the Capabilities Approach, which evaluates well-being based on what people can do and be. This case study explored the Capabilities Approach in an SDP setting. Youth Odyssey, a non-profit organization that works with at-risk youth through adventure programming, was the case. This case study explored what role …


Influences Of Porphyromonas Gingivalis On The Viability Of Esophageal Cancer Cells., Muddasir Mohammed Dec 2018

Influences Of Porphyromonas Gingivalis On The Viability Of Esophageal Cancer Cells., Muddasir Mohammed

Electronic Theses and Dissertations

A recent study demonstrated an association between the Porphyromonas gingivalis (Pg)infection and the progression of ESCC (Gao et al., 2016). However, how Pg infection affects the nature of ESCC remains unknown. We examined the effects of Pg on the proliferation and chemotherapy drug-induced apoptosis of ESCC cells and elucidated the signaling molecules involved in these processes. Method: Apoptosis and cell proliferation were tested using Flow cytometry and Tetrazolium salt based proliferation assays respectively. Western Blot was utilized to detect the protein expression. CDK2 and Cyclin E were knocked down in the ESCC cells through transfection. Unpaired T-test and …


Present But Not Accounted For: A Phenomenological Study Of Gifted African American Males., Ronda Elizabeth George Dec 2018

Present But Not Accounted For: A Phenomenological Study Of Gifted African American Males., Ronda Elizabeth George

Electronic Theses and Dissertations

The purpose of this research study was to explore the lived experiences of gifted African American males in grades 6-8. Specifically, the study examined how gifted African American males perceived and understood their participation in a gifted program and how their sense of self-efficacy shaped their disposition and approach toward academic persistence. Much of the literature published on the social, emotional, and academic success of gifted African American males has focused on college-aged students, therefore the current study is crucial in contributing to the body of knowledge on African American males, in particular, those identified as gifted during early adolescence …


Functional Consequence Of Psat1 Association On Pkm2'S Inherent Enzymatic Activity., Alexis Avidan Vega Dec 2018

Functional Consequence Of Psat1 Association On Pkm2'S Inherent Enzymatic Activity., Alexis Avidan Vega

Electronic Theses and Dissertations

Pyruvate kinase M2 (PKM2) is predominantly found in tumors, where it allows the cancer cell to adapt to metabolic conditions through allosteric regulation of its activity. We recently discovered that phosphoserine aminotransferase 1 (PSAT1) associates with and activates PKM2. Here, I sought to affirm PSAT1's ability to increase PKM2 activity through kinetic and association studies of wild-type or mutant PKM2 enzymes. I demonstrate that His-tagged WT and mutant PKM2 enzymes are active, exhibit different kinetics, yet cannot be activated by PSAT1. Comparison studies using untagged WT PKM2 suggest that inclusion of the His-tag disrupts PSAT1 association. In support, pull-down strategies …


Public Policy And Strategies To Support Institutional And Technological Innovations In The New Water Economy: The Example Of Innovation Technology Clusters In Developing And Diffusing Water Technologies., Craig Francis Barham Dec 2018

Public Policy And Strategies To Support Institutional And Technological Innovations In The New Water Economy: The Example Of Innovation Technology Clusters In Developing And Diffusing Water Technologies., Craig Francis Barham

Electronic Theses and Dissertations

A long list of water technologies has been central to human development throughout history. From the well in ancient times to desalination in the contemporary period, water technologies are needed to produce, distribute and treat water to support human life, industry, agriculture, and environmental health. As human development puts intense pressure on the planet's limited fresh water supplies, society is turning to increasingly innovative water technologies to close the supply-demand gap. The water economy represents a significant share of total economic output it its own right, while at the same time water directly or indirectly underpins all other economic activity. …


Understanding The Relationship Between Anti-Transgender Bias, Non-Affirmation, And Post-Traumatic Stress: A Model Of Internalized Transphobia-Mediated Post-Traumatic Stress., Sebastian Mitchell Barr Dec 2018

Understanding The Relationship Between Anti-Transgender Bias, Non-Affirmation, And Post-Traumatic Stress: A Model Of Internalized Transphobia-Mediated Post-Traumatic Stress., Sebastian Mitchell Barr

Electronic Theses and Dissertations

Transgender people’s increased risk for negative mental health outcomes, when compared to cisgender peers or the general public, has been well documented in the psychological literature. Researchers have begun to establish empirical support for a relationship between anti-transgender bias, non-affirmation of gender identity, internalized transphobia, and other transgender-specific minority stressors. Although little work has explored the mechanisms of this relationship, some psychologists have proposed conceptualizing these factors as potentially traumatic experiences and understanding the poor mental health outcomes as manifestations of complex post-traumatic stress. In this dissertation, I examine whether there is empirical support for this framework by evaluating the …


Student Perception Of The Effects Of Out Of School Suspension On Academic Motivation., Dawn Boone Roseberry Dec 2018

Student Perception Of The Effects Of Out Of School Suspension On Academic Motivation., Dawn Boone Roseberry

Electronic Theses and Dissertations

Historically, the response to rule violations and misbehavior in schools was to punish students by using methods such as exclusionary discipline. Exclusionary discipline may lead to poor academic outcomes for the student, increased likelihood of dropping out of school, and an introduction to the criminal justice system (Cueller and Markowitz, 2015). Being suspended from school also increases the chances a student will feel disconnected, intensify conflict with adults, and impact a youth’s choice to engage in criminal activities (Skiba et al., 2006). Researchers have concluded that suspension is also a predictor of future suspensions, not a deterrent (Rafaele & Mendez, …