Digital Commons Network^™

The Effect Of 3d Collagen Scaffolds On Regulating Cellular Responses, Chad Simmons

Theses and Dissertations

Epithelial cells, as well as other differentiated cell types, remodel surrounding collagen in vitro, to self organize into 3D structures. When placed on-top or inside of a collagen hydrogel, cells organize into a toroid or spheroid form. It is not clearly understood how these cell types modulate surrounding collagen to form 3D shapes. The goal of this project was to determine if cell type, collagen type, or cell placement are factors that can alter how cells reorganize and remodel collagen hydrogels. We hypothesize that the positioning, cell type and the type of collagen they are in contact with affect the …

The Liberal Commercial Peace, Regional Considerations: International Relations Of Southeast Asia, Latin America, And The European Union Countries, Chienwu Hsueh

Theses and Dissertations

Most of the large-N empirical studies on the liberal commercial peace theory demonstrate that, in general, trade has a robust pacifying effect in reducing the probability of dyadical militarized interstate disputes. However, why trade’s pacifying effect varies across time and space remains a puzzle that previous research has not yet solved. The liberal commercial peace literature suggests the following questions are in need of answers: Why does trade promote peace mainly in inter-region dyads but not in intra-region dyads? What are the preconditions that make trade’s pacifying effect work or not work? In this research, I argue that there are …

Cameron Decomposition Applied To Polarimetric Synthetic Aperture Radar Signature Detection, Sean Wininger

Theses and Dissertations

Cameron et al, have developed a method of decomposing scatterer scattering matrices based on Huynen’s scattering matrix decomposition parameters. Huynen’s decomposition parameters are not unique, in that certain transformation properties, such as the angle of symmetry itself, may misidentify a scattering matriix and therefore misidentify a particular geometric shape. Cameron decomposition derives these parameters by direct calculations from the scatterer itself so that they may not be inferred or interpreted. A detailed explanation of the foundations and method of Cameron decomposition is presented here. A description of how Cameron decomposition is implemented in Polarimetric Synthetic Aperture Radar (PolSAR) signature detection …

Two Studies To Inform Comprehensive School Physical Activity Programming: A Systematic Review Of Program Effectiveness And The Development Of An Observational Measure For Classroom-Based Physical Activity Promotion, Laura B. Russ

Theses and Dissertations

This dissertation consists of two studies pertaining to comprehensive school physical activity programs (CSPAP) that function in tandem to advance the knowledge base. The lack of an empirical basis for moving forward with CSPAP efforts and the lack of objective measures of CSPAP implementation are intertwined limitations currently stemming the potential for wide scale program adoption.

The purpose of Study 1 was to conduct a systematic review and meta-analysis of multi-component PA interventions through schools that could be mapped onto at least two components of the CSPAP model. Electronic databases were searched to identify published studies that (1) occurred in …

The Subjective Warrant For Teaching Physical Education In South Carolina, Matthew Blake Lineberger

Theses and Dissertations

The purpose of this study was to: (1) identify the warrant for teaching physical education held by future professionals, (2) identify the influencing attractors and facilitators for future professionals, and (3) explore for any possible influence the South Carolina Physical Education Assessment Program (SCPEAP) may have had on students’ decision to enter physical education teacher education (PETE) programs. Data were collected by questionnaire (Appendix A) which was piloted on master’s level students at the University of South Carolina. Participants were 103 undergraduate PETE students from 14 institutions in South Carolina. Simple descriptive statistics and independent ttests were used to analyze …

Modeling And Computations Of Cellular Dynamics Using Complex-Fluid Models, Jia Zhao

Theses and Dissertations

Cells are fundamental units in all living organisms as all living organisms are made up of cells of different varieties. The study of cells is therefore an essential part of research in life science. Cells can be classified into two basic types: prokaryotic cells and eukaryotic cells. One typical organisms of prokaryotes is bacterium. And eukaryotes mainly consist of animal cells. In this thesis, we focus on developing predictive models mathematically to study bacteria colonies and animal cell mitotic dynamics.

Instead of living alone, bacteria usually survive in a biofilm, which is a microorganism where bacteria stick together by extracellular …

A Longitudinal Examination Of The Mediating Role Of Social Problem Solving Between Parental Attachment And Early Adolescents’ Life Satisfaction, Xu Jiang

Theses and Dissertations

Both attachment theory and empirical evidence indicate that the quality of parental attachment profoundly influences many different aspects of adolescent life. However, one area that has been somewhat neglected in the literature is the discovery of the psychosocial mechanisms that account for the link between parental attachment and important adolescent developmental outcomes, such as social problem solving (D’Zurilla & Goldfried, 1971) and life satisfaction (LS: Diener, 1994). Driven by the conceptual framework of development of LS proposed by Evans (1994), Attachment Theory and Social Problem Solving Theory, a mediation model was hypothesized to explore the link between parental attachment and …

Neutrino And Antineutrino Induced Meson Production, Libo Jiang

Theses and Dissertations

Coherent meson production measurement is very important in physics research. First, the coherent pion production is a potential background to v oscillation in next generation of Long Base Line Experiment(ELBNF/DUNE); second, coherent pion and coherent p production provide a detailed test of CVC and PCAC hypothesis; third, coherent meson production can be used to monitor the neutrino and anti-neutrino fluxes in the experiment. This dissertation focuses on two parts: coherent pi production in NOMAD, and coherent p simulation using LBNF fluxes. With the NOMAD data, the ratio between cross-sections of coherent pi- and v charged current interactions was measured and …

Quantification Of The Effect Of Tool Geometric Features On Aspects Of Friction Stir Welding, Md. Reza-E-Rabby

Theses and Dissertations

In the friction stir welding (FSW) process, tool stirring and synchronized movement of the weld materials along a pre-existing seam line causes thermal gradients and severe plastic deformation resulting in the bonding of the adjacent materials. For a given set of welding parameters, tool pin geometries (dimensions, shape) and vertical/helical features that dictate the material motion also have significant effects on process response variables during FSW. Among the primary process controlling parameters in FSW, tool pin geometry and feature vary multifariously in terms of shape, dimensions, feature insertion technique depending on the weld material and application of joint. The current …

Design And Development Of A Ventilation Chamber For Testing Efficacy Of Tracheal Stents, Caroline N. Horton

Theses and Dissertations

Tracheobronchial malacia results in a weakening of the tracheal walls, leading to increased difficulty breathing. Stents are used to reopen the lumen of the trachea, however, current models are not personalized to each patient, leading to migration, inflammation, and breakage of the stents. In order to successfully test novel stent designs, a ventilation chamber is needed to recreate the breathing conditions of the body.

The following describes the iterative development of a ventilation chamber, which allows inflation and deflation of lungs via negative pressure ventilation, as representative of an actual body undergoing respiration. Previous work shows that lungs are not …

Vocational Readiness: The Effect Of Pre-Prison And Incarceration-Based Trauma On Cognitive Appraisals And Self-Perceptions Of Incarcerated Women, Joi Dykes Anderson

Theses and Dissertations

The number of women incarcerated in the United States has grown at an alarming rate. This research study presents a conceptual framework for examining pre-prison and incarceration-based trauma and its effects on cognitive appraisals and self-perceptions. Literature from psychology, feminist psychology and neuropsychiatry are integrated to discuss how pre-prison trauma creates pathways to crime for females, how incarceration serves as a form of traumatization (or retraumatization), how the social dynamics of the prison environment potentially exacerbates mental health issues (i.e., PTSD, anxiety, depression), how this negatively affects a female inmates vocational readiness—the ability to obtain and maintain employment once engaged …

A Comparison Of The Factor Structure Of The Short Form Liberal Feminist Attitude And Ideology Scale (Lfais) For Women And Men In A University Survey, V. Diane Woodbrown

Theses and Dissertations

The current study compares the factor structure of the short form Liberal Feminist Attitude and Ideology Scale (LFAIS; Morgan, 1996) for males and females in a University survey. We first provide a discussion of feminism, a brief narrative review summarizing previous and co-existing measures of the construct “feminist attitudes” for males and females, and then conduct confirmatory factor analyses (CFA) and exploratory structural equation modeling (ESEM) to test Morgan’s own theory that there may exist a single general factor underlying the Liberal Feminist Attitudes Ideology Scale for males and for females, and that the latent construct/s underlying this scale are …

The Domestic Adoption Of International Human Rights Law: The Roles Of Regional And National High Courts In Latin America, Rebecca Ann Reid

Theses and Dissertations

This dissertation addresses the question: under what conditions do regional and national high courts matter in the promotion and domestic incorporation of international human rights law? In order to address this question, I argue that domestic high courts can proactively adopt international human rights laws through their interpretation of the law and resulting case decisions. Regional courts promote international law, particularly through their requirement of domestic legal reforms in their judgments. I examine the extent of state compliance with these requirements, where compliance consists of these changes in the domestic legal system thereby institutionalizing international laws and transforming them into …

Building Capacity For Advocacy For Local Food Systems Change: An Ethnographic Study Documenting The Process Of Change In South Carolina Communities, Casey Denise Childers

Theses and Dissertations

The Guide to Community Preventive Services currently does not have sufficient evidence to recommend any nutrition strategies for obesity prevention. Nonetheless, food systems changes are recommended for childhood obesity prevention by the C.D.C., U.S.D.A., and many thought-leading organizations. Creating healthy food communities will require physical and social environmental changes. Community-based groups need to build their capacity to frame community health issues as physical and social environmental issues. This research partnered with community-based groups to build their capacity for advocacy by using media framing research and strategic communications training. Specifically we: 1) conducted a media content about food systems, childhood obesity …

Development Of Computer Simulation Model For Urban Region Using Xp-Swmm In Savannah, Georgia, Matthew Dale Ricks

Theses and Dissertations

The objective of this thesis was to determine if it is possible to create, calibrate, and validate a computer simulation model given a limited amount of measured data. In June 1999, significant flooding was experienced throughout the Casey Canal North drainage basin in Savannah, Georgia. Time-depth rainfall data from a single gage was recorded for this event, along with peak water surface elevations throughout the basin. The computer model chosen for this application was XP-SWMM, which was approved by the Federal Emergency Management Agency to simulate both one dimensional and two dimensional hydraulic models. XP-SWMM was chosen due to its …

Authentic Relationship Management To Heighten Control Mutuality In Social Media, Diana Catherine Sisson

Theses and Dissertations

Drawing on literature from public relations, marketing, interpersonal communication, and organizational communication, this dissertation focused on the effects of authenticity on relationship management outcomes in nonprofit organizations’ social media efforts. There is significant need for relationship management rooted in authenticity with the rise in inauthentic communication online. This dissertation aims to contribute to relationship management theory by highlighting the role of control mutuality in analyses of authenticity in organization-public relationships in social media for nonprofit organizations like local animal welfare organizations. This dissertation proposes that control mutuality is an ethical outcome of authentic relationship management. This dissertation also proposes that …

The Role Of Self-Efficacy In Mediating The Effect Of Physical Activity On Adolescent Depression, Nevelyn N. Trumpeter

Theses and Dissertations

Depression is a common psychiatric problem experienced in adolescence with nearly a quarter of all adolescents experiencing a major depressive episode before adulthood. Previous evidence indicates that physical activity (PA) is a known protective factor for depressive symptoms and major depressive disorder in adolescents and that PA self-efficacy (i.e., self-confidence) improves self-esteem, which in turn reduces depressive symptoms. Furthermore, PA self-efficacy may be more protective against depression for individuals who value or consider PA to be highly important. The proposed study aimed to determine the cross-sectional and longitudinal PA-depressive symptoms relation in adolescents. The study was designed specifically to test …

Tipping The Balance Of Double-Strand Break Repair In Cells Modeling Hutchinson-Gilford Progeria Syndrome, Andrew Robert Patrick

Theses and Dissertations

Hutchinson-Gilford Progeria Syndrome is disease of highly accelerated aging. In addition to appearing physically old mere months after birth, patients suffer from maladies typical of the elderly, including heart attack and stroke, two factors which contribute to an average life expectancy of 14 years. The source of progeria has been identified as progerin, a defective variant of nuclear lamina protein lamin A. Progerin has also been found natively in healthy cells (concentration increasing with age), and is known to adversely affect nuclear morphology and chromosomal integrity. This thesis sought to investigate the effect of progerin upon which pathways were favored …

Design Of Experiments Analysis Of Non-Standard Inputs For The Optimization Of Friction Stir Welding, Ryan Widejko

Theses and Dissertations

The purpose of this study was to use non-standard Design of Experiments (DoE) inputs in Friction Stir Welding (FSW) to deduce relationships between various weld input and response variables. Typically, inputs for FSW DoE are tool rotational speed, welding speed and forge force. In this study, three different input factors were investigated: travel speed, thermal boundary conditions (TBC), and advance per revolution (APR). The experimental design included a full factorial with each factor at two levels plus two centerpoint runs. Response variables included weld temperature, microstructure, hardness, power, weld energy, and in plane forces.

An investigation of the effect of …

Cardiorespiratory Fitness, Body Fatness Effect On Submaximal Systolic Blood Pressure And Cardiovascular Prognosis Among Young Adults, Vivek Kumar Prasad

Theses and Dissertations

Cardiovascular (CV) diseases (CVDs) are known to be the leading cause of death globally, as CVDs account for the highest rate of mortality compared to any other causes. The mortality from CVDs, is projected to increase to nearly 23.3 million by 2030. Mortality number due to CVD in the United States is 600,000 per year, thus representing nearly 1 in every 4 deaths. Exercise blood pressure (BP) is an important marker of CV events that are associated with incident CV morbidity and mortality among individuals with or without any CVD at present. Elevated exercise BP among individuals with normal resting …

Bayesian Semi- And Non-Parametric Analysis For Spatially Correlated Survival Data, Haiming Zhou

Theses and Dissertations

Flexible incorporation of both geographical patterning and risk effects in cancer survival models is becoming increasingly important, due in part to the recent availability of large cancer registries. The analysis of spatial survival data is challenged by the presence of spatial dependence and censoring for survival times. Accurately modeling the risk factors and geographical pattern that explain the differences in survival is particularly of interest. Within this dissertation, the first chapter reviews commonlyused baseline priors, semiparametric and nonparametric Bayesian survival models and recent approaches for accommodating spatial dependence, both conditional and marginal. The last three chapters contribute three flexible survival …

Mobile Home Resident Perspectives On Preparedness, Protective Action, And Evacuation For Tornado Hazards, Kevin D. Ash

Theses and Dissertations

More than 1,000 tornadoes strike the United States each year, and no population segment has been impacted to a greater degree than those who live in mobile homes. Despite being only about 7% of the total population, mobile home residents have comprised 40% to 50% of all tornado deaths over the past fifty years. Inhabitants of mobile homes must therefore act quickly to protect themselves when they are threatened by tornadoes. Warning messages instruct mobile home occupants to move to a sturdier building until the storm passes, but what are the residents’ perspectives on this recommended behavior? It is unknown …

Neural Correlates Of Verb Argument Structure Processing, Svetlana Malyutina

Theses and Dissertations

Verb argument structure (VAS) is pivotal to sentence production and comprehension, since it determines participant roles, as well as their grammatical form and syntactic position in a sentence. Neural correlates of VAS processing have mainly been studied in terms of the number of arguments. Data on the neural and behavioral effects of other VAS characteristics are limited, whereas they would have implications for behavioral and brain stimulation treatments of language disorders.

The present research investigated behavioral and neural effects of three understudied VAS characteristics (number of subcategorization options, number of thematic options and number of number-of-argument options) in single-word-level and …

Olivier Messiaen’S Couleurs De La Cité Céleste: A Conductor’S Guide, Michael Thomas King

Theses and Dissertations

Olivier Messiaen (1908–1992) was one of the leading composers of the twentieth century. He was renowned for developing his own personal style of composition of which he outlined in his Technique de mon Language Musical. This style includes the use of color chords, birdsong, plainchant, and Hindu and Greek rhythms. His compositions were written for, and championed by conductors such as Pierre Boulez, Kent Nagano, Seiji Ozawa, and of course his primary artistic partner, pianist Yvonne Loriod.

Over the course of his compositional career, Messiaen wrote five works for winds and percussion. The first three works Oiseaux exotiques, Couleurs de …

Two Pieces For Bassoon By Dan Welcher: A Guide To Performance And Analysis, Including A Survey Of Welcher’S Chamber Music With Bassoon, Reed Aaron Hanna

Theses and Dissertations

This study is a performance guide that traces the compositional style of Dan Welcher, a well-known composer and former principal bassoonist of the Louisville Symphony and professor of bassoon at the University of Texas, through an examination of two works in which the bassoon is a prominent solo instrument: Concerto da Camera (1975) and The Wind Won’t Listen (2002). These works, a concerto and a chamber piece, span a period of almost 30 years in Welcher’s career. The study also includes a survey of other chamber music by Welcher involving the bassoon. It relates the two focal pieces to the …

Characterization Of The Sufc Atpase During Fe-S Cluster Assembly By The Suf Pathway In Escherichia Coli, Khaleh Mykel Thomas

Theses and Dissertations

The gram-negative bacterium E. coli encodes the Suf pathway to assemble iron-sulfur (Fe-S) clusters under iron starvation and oxidative stress conditions. The ATPase activity of SufC is critical for in vivo Fe-S cluster assembly by the Suf pathway. SufC shares homology with the nucleotide binding domain (NBD) of ATP-binding cassette (ABC) transporters and belongs to the AAA+ (ATPases Associated with diverse cellular Activities) ATPase superfamily, a family of proteins that utilizes energy from ATP hydrolysis to perform a variety of cellular functions. SufC forms a stable SufBC2D complex with partner proteins SufB and SufD. The SufBC2D complex serves as a …

Hypertension Health Behavior Change And Older Adults: The Effect Of An Appreciative Education Approach, Mary Katherine Benya

Theses and Dissertations

Making lifestyle changes has been found to be effective in controlling hypertension. Positive psychology may provide alternatives to existing health behavior change approaches. Appreciative Education (AE), a positive psychology approach, was applied to an existing hypertension control intervention, Lifestyle University (LU), and compared to the Social Cognitive Theory (SCT) approach, in a segment of the existing intervention. This study used quasi-experimental, mixed methods pre/post-test, repeated measures design. Two-groups of community-dwelling adults, aged 50+, control SCT (n= 60), and experimental AE (n=33), were compared using the LU intervention. Seven dependent variables were measured at pre-test, post-test 1 and post-test 2. Repeated …

Selective Synthesis And Characterization Of Single-Site Hy Zeolite-Supported Rhodium Complexes And Their Use As Catalysts For Ethylene Hydrogenation And Dimerization, Konstantin Khivantsev

Theses and Dissertations

Single-site Rh(CO)2, Rh(C2H4)2 and Rh(NO)2 complexes anchored on various dealuminated HY zeolites can be used as precursors for the selective surface mediated synthesis of well-defined site-isolated Rh(CO)(H)x complexes. DFT calculations and D2 isotope exchange experiments provide strong evidence for the formation of a family of site isolated mononuclear rhodium carbonyl hydride complexes (including the first examples of RhH complexes with undissociated H2 ligands): Rh(CO)(H2), Rh(CO)(H)2, and Rh(CO)(H). The fraction of each individual complex formed varies significantly with the Si/Al ratio of the zeolite and the nature of the precursor used.

HY zeolite-supported mononuclear Rh(CO)2 complexes are remarkably active in ethylene …

Evaluating Muscle Fiber Architecture, Morgan Ashley Flahive

Theses and Dissertations

Mastication is the first step in the preparation of food for digestion. The masticatory anatomy of several families of Carnivorans (i.e., Family Canidae, Family Mustelidae, Family Hyaenidae, and Family Ursidae of the order Carnivora) will be compared in this study. The goal is to better understand masticatory adaptations through an examination of bite force and muscle fiber architecture in the various groups of carnivores, and to provide a proper protocol in acid dissection of fiber architecture.

Changing Cigarette Consumption Patterns And Their Relationship To Tobacco Control Policies In A Population Of Low-Intensity Smokers, Santosha Kamala Swayampakala

Theses and Dissertations

Tobacco use is the single most preventable cause of premature death and disability in the world. Every year six million people will die from tobacco-related diseases. To curb the growing tobacco epidemic, World Health Organization (WHO) adopted its first-ever global public health treaty, Framework Convention on Tobacco Control (FCTC) that obligates ratifying countries to implement a range of tobacco control policies. Most of the evidence for the effectiveness of the WHO’s FCTC recommended tobacco control policies comes from high-income countries (HICs). This evidence suggests that as smoking prevalence declines in response to tobacco control policies and programs, the proportion of …