Digital Commons Network^™

Emergence Of Stranger Fear In Preschoolers With Fragile X Syndrome And Idiopathic Autism Spectrum Disorder, Jessica Scherr

Theses and Dissertations

This study investigated multiple behavioral indicators of social fear and their relationship to symptoms of autism in preschool boys with atypical and normative development using a stranger approach design. Participants consisted of 101 male preschoolers that were categorized into four groups: boys with fragile X syndrome (FXS; N= 29), FXS with elevated autism symptoms (fxASD; N = 25), idiopathic autism spectrum disorder (iASD; N = 11), and typically developing boys (TD; N = 36). Results indicated specific behavioral responses to a stranger differentiated preschoolers with more severe symptoms of autism (e.g. fxASD and iASD groups) from those with low autism …

Supercritical Carbon Dioxide Treatment Of Natural Biomaterials For Tissue Engineering Applications, Dominic M. Casali

Theses and Dissertations

The number of people requiring an organ transplant in the United States has increased considerably over the past 25 years, but the number of organ donations has stagnated; over 8,000 people now die annually while awaiting a transplant or become too sick to receive one. Tissue engineering (TE), the design and production of artificial tissues and organs in vitro, has been proposed to alleviate this problem. Though synthetic polymers offer tunable mechanical and biochemical properties, natural biomaterials have recently garnered attention in TE for their high degree of biocompatibility and ability to direct cell proliferation and constructive tissue remodeling. Yet …

The Act Keytrain Program And The Act Workkeys Test Performance: An Action Research Study, Matthew T. Thompson

Theses and Dissertations

The purpose of this quantitative action research study was to describe the effectiveness of the American College Testing (ACT) KeyTrain program in the South Carolina Department of Corrections (SCDC), conducted with 50 inmate-student-participants who were enrolled in the Palmetto Unified School District’s Tyger River High School’s (TyRCI) adult education program. The identified problem of practice for this dissertation in practice (DiP) was an evaluation of the effectiveness of this program for one group of low socioeconomic status Black male inmate-student-participants. This evaluation was of vital importance to the Palmetto Unified School District (PUSD) and SCDC because ACT WorkKeys is one …

The Private University Faculty Perspective Of Community College Transfer Students: An Ethnographic Interview Study, Sally E. Hyatt

Theses and Dissertations

Faculty/student relationships have a significant impact on student retention and success (Tinto, 1975, 1993). However, little is known about how faculty perceive community college transfer students and how they make meaning of their interactions with these students. This qualitative, descriptive, ethnographic interview study describes faculty/student interaction and the ways in which community college transfer students are perceived by the faculty at one small, private, nonprofit, masters-level university. The research questions used for this study were designed to investigate the faculty’s perception of community college students, the students’ academic experiences and the faculty/student relationship.

The researcher gathered data during 12 in-depth …

African American End-Stage Renal Disease And Medication Adherence: What Are The Effects Of Everyday Racism?, Tamara Estes Savage

Theses and Dissertations

This dissertation explored the racial medication adherence disparity in end-stage renal disease (ESRD) patients. Prior research suggests that there are poor rates of medication adherence in the African American ESRD population. However, the reasons for this racial inequity are not understood. This dissertation explored the impact of everyday racism in the healthcare system in general and dialysis centers in particular on medication adherence. To gain an understanding of the possible contribution of everyday racism to medication nonadherence, Critical Race Theory (CRT) was used as the theoretical foundation of the study.

A total of 46 African American ESRD patients participated in …

Student Involvement As A Mediator Of The Relationship Of Peer Leaders In First-Year Seminars To Academic Achievement And Persistence, Liyun Zhang

Theses and Dissertations

Peer leaders as a component of First-Year Seminars (FYS) are designed to assist in the adjustment, satisfaction and persistence of first-year college students. Although previous studies have consistently found the positive and direct impact of peer leaders on first-year students’ academic achievement and persistence, there is still a lack of clear understanding on why peer leaders have this positive relationship with students’ academic achievement and persistence. Thus, drawing on Astin’s theory of student involvement for higher education (1984, 1993, 1996), and Tinto’s interactive theory of departure (1993), this short term longitudinal study examined the process through which peer leaders resulted …

A Professional Learning Community For Novice Teachers At A Title I Elementary School: An Action Research Study, Marie Putnam Havran

Theses and Dissertations

The present study describes the effect of a professional learning community (PLC) for novice teachers at Greenville Elementary, a Title I elementary school in the southern United States. The identified problem of practice at this school involves novice teachers who are required to participate in a district-approved Assisting, Developing, and Evaluating Professional Teachers (ADEPT) model as the teacher evaluation program in addition to maintaining a portfolio of their work experiences. The participant-researcher wondered if this affected novice teacher’s self-efficacy in the classroom with children of working-class poor, and if a PLC aimed at increasing their feelings of self-efficacy would be …

Longitudinal And Geographical Modeling Of Circular Data With An Application To Sudden Infant Death Syndrome, Xinyan Cai

Theses and Dissertations

The aim of this thesis is to study seasonality of death in U.S. infants who died from SIDS. We also propose to investigate secular trends and geographical patterns of seasonal patterns of mortality. The application of circular statistics is used to describe the seasonality of the month of death in infants who died from SIDS in 1990, 2000 and 2010. The secular trends of seasonal patterns of SIDS mortality are investigated using a circular linear regression model after adjusting for potential confounders. The geographical variation in seasonal patterns of SIDS mortality is explored from the U.S. map and quantified by …

Rational Synthesis Of Catalysts For Biomass Conversion, Qiuli Liu

Theses and Dissertations

With climate change due to global warming, the production of hydrocarbon fuels and chemicals from renewable biomass resource has become more pressing in recent decades. The biggest challenge in biomass conversion is to develop active, selective and stable catalysts for particular applications. The objective of this research is to optimize catalytic performance for hydrodeoxygenation (HDO) and hydrogenation reactions by enhancing the stability of the support, tuning metal particle size, and controlling surface composition.

The high content of water in bio-oil and the aqueous environment of the upgrading process requires a hydrothermally stable catalyst. The hydrothermal stability has been effectively improved …

Three Studies Of Service-Learning As An Approach To Movement Integration In Elementary Classrooms, Robert D. Michael, Jr.

Theses and Dissertations

This dissertation consists of three studies that examine service-learning (SL) as an approach to incorporating movement integration (MI) in elementary classrooms as part of a comprehensive school physical activity program (CSPAP). All three studies attempt to advance the knowledge base about using partnership approaches to supporting schoolbased physical activity promotion.

The purpose of study one was to examine the perceptions of preservice classroom teachers (PCTs), classroom teachers (CTs), and course instructors who participated in a constructivist-guided university course with a focus on MI and a SL component. Focus groups with 172 PCTs and individual interviews with 7 CTs and 4 …

Applications Of Multimedia Resources Developed As Part Of The Virtual Cell Animation Collection In Undergraduate Introductory Biology, Eric Edward Goff

Theses and Dissertations

Calls for reform in undergraduate STEM education have arisen from an increased need for well-trained biology graduates in the future scientific workforce. To address this need, many institutions have focused on a pedagogical restructuring of instructional practices to promote deeper conceptual understanding of core biological concepts. This study investigates the implementation of multimedia resources as a possible reliable supplement to undergraduate introductory biology and aims to provide empirical evidence on the instructional best practices of their use. As a central part of this study, we focus on one specific multimedia package, the Virtual Cell Animation Collection, due to its developmental …

Analysis Of Food Exposures In Foodborne Disease Outbreaks, Alecia T. Alianell

Theses and Dissertations

Foodborne illness remains a serious public health problem in the United States in general as well as South Carolina in particular. Obtaining good food ingestion histories as well as possible risky environmental exposures is one of the earliest, most important tasks to complete in any foodborne outbreak investigations. Because time is of the essence in investigations, we have evaluated a rarely used biostatistical method, Random Forests, to data obtained from DHEC. Random Forests has the potential to facilitate more rapid identification of foods or environmental exposures that may be associated with outbreaks. We also examined previous cases of salmonellosis using …

Contesting The Generic Refugee: Siv Identity, Community, And Agency During Resettlement, Benjamin J. Sylvester

Theses and Dissertations

This thesis examines the complexity of identity and community formation by Special Immigrant Visa (SIV) holders during resettlement in Columbia, South Carolina. It explores the ways in which identities coalesce around various themes, such as religion, gender, and military service, how these identities serve to create, expand, and claim membership in communities, and how SIVs exercise agency throughout these processes. Through semi-structured interviews with 9 SIVs in Columbia, SC, this qualitative study highlights the unique, highly individualized ways in which a select group of refugees experience resettlement, how they negotiate their placement within socio-economic hierarchies, and exercise agency to obtain …

Adoptees’ Experiences With Direct-To-Consumer Genetic Testing: Emotions, Satisfaction, And Motivating Factors, Anna Childers

Theses and Dissertations

Public awareness of the role of genetics in disease continues to expand along with the use of direct-to-consumer genetic testing (DTC-GT). One subset of customers taking advantage of the growing DTC-GT market is adoptees. Prior research has shown that adoptees appear to be more motivated than non-adoptees to learn about their genetic disease risk but have similar responses to health-related information acquired through DTC-GT. In this exploratory qualitative study, fourteen adoptees were asked about their motivations for pursuing DTC-GT; satisfaction with results; emotions throughout the process; and interest in meeting with a genetic counselor. Motivations for pursuing DTCGT fell into …

In The Way Back, Mark Rodehorst

Theses and Dissertations

This is a collection of poems that explores the intersection of place, memory, culture, and identity.

Conversations With Chris: Discussing Racial Diversity In A Professional Book Club, A. Brennan Davis

Theses and Dissertations

The purpose of this qualitative action research study was to understand and describe the experiences and the effects of one high school teacher’s membership in a professional development book club focused on issues of racial diversity with the overall aim of change toward equitable teaching practices through the following actions: confronting personal biases, discussing and reflecting on personal experiences and beliefs, questioning and critiquing personal beliefs and teaching practices, interacting with other professionals and with the readings in a supportive environment in which we celebrated and supported articulations of social justice or positive change. Thematic analysis was used to analyze …

The Effects Of A Summer Reading Program On Reading Achievement And Reading Motivation, Marcia Seawright

Theses and Dissertations

Research shows that children who read books often, both in and out of school, are likely to develop better reading skills than children who have fewer opportunities to read. (Allington, 2012). While many school districts are successfully implementing various opportunities to support students’ reading development during the academic year, problems arise when students are away from school during the summer months. Studies also show that students who read below grade level at the end of third grade are six times more likely to eventually leave school without a high school diploma (National Research Council, 1998). The purpose of this combined …

Environmental Negotiations Cherokee Power In The Arkansas Valley, 1812-1828, Cane West

Theses and Dissertations

In the early 19th century, the Arkansas River Valley existed as a borderlands region of powerful Indian nations and immigrant Euro-American and Native American settlers. In the resulting contests over settlement, Cherokee chiefs recreated the Arkansas Cherokees' ecological identity from hunters to agrarians to differentiate themselves from their Osage and white rivals. During the 1820s, Cherokee chiefs expanded on their agrarian rhetoric by appropriating American scientific systems in order to stymie white settlement. By the end of the 1820s, Arkansas Cherokee chiefs had infused their arguments of preferred agricultural lands, appropriate survey methods, and accurate cartography into the debates over …

Toward A Theory Of Full Life Cycle Recruiters, Michael C. Campion

Theses and Dissertations

Despite their operational and strategic importance to their firms, recruiters remain virtually invisible within management scholarship today. In this dissertation, I draw on research from a variety of theoretical perspectives and use role theory as a foundation for developing a theory intended to generate insight into the major individual, social, and contextual factors that underpin their behavior and performance. I define full life cycle recruiters as quasi-agentic brokers of resources among parties internal and external to a firm who operate at the intersection of social systems, are involved in recruiting, assessment, and onboarding processes, and adopt multiple micro roles with …

Far-Field Optical Microscopy Based On Stimulated Emission Depletion, Yunxia Wang

Theses and Dissertations

Conventional lens-based (far-field) fluorescence microscopy is a widely used imaging technique with spatial resolution up to 150–350 nm. However, this technology cannot discern very small structural features, because the spatial resolution is limited by diffraction to about half of the wavelength of light (λ/2，λ is the wavelength of light). Hence, most of the developments in microscopy aim at improving resolution. In the past decades, stimulated emission depletion (STED) microscopy has been developed to bypass the diffraction limit for the application in biological imaging with resolution approaching the nanoscale. The basic principle of STED microscopy is to employ a doughnut-shape laser …

Framing Perceptions Of Justice In A Public Goods Dilemma, Hatice Atilgan

Theses and Dissertations

Provision of public goods often requires sufficient contributions from group members, and improper contributions are likely to produce feelings of injustice. Building on previous research, I develop a justice theory that explains how framing social comparisons in particular ways will make actors more or less sensitive and reactive to departures from fair contributions. In turn, this is predicted to impact justice-restoring behaviors such as reducing subsequent contributions to a public good, punishing group members, or exiting the group. This integrated theory shows how varying the way key pieces of information are framed affects fairness perceptions and subsequent behaviors in social …

The Effect Of Social Exclusion On Shoplifting, Christopher Ling

Theses and Dissertations

This dissertation examines the effect of social exclusion on shoplifting. Shoplifting is a serious problem for marketers, yet surprisingly little attention in the literature has been paid to its underlying social factors. The current research therefore seeks to document conditions under which, and the process through which, consumers may engage in aggressive behavior in the form of shoplifting. Supporting the proposition that shoplifting is an antisocial response to social exclusion that depends on prior shoplifting experience, four studies provide evidence that prior shoplifters (vs. nonshoplifters) are more likely to shoplift again when they are socially excluded because they expect that …

Stories: From Foreign To Fluent!, Kurt Hoberg

Theses and Dissertations

These nine stories depict characters in migration and the consequences of that migration.

Mast Cells And Lipid Cross-Talk In Skin Inflammation, Piper Alexandra Wedman

Theses and Dissertations

Atopic dermatitis (AD) is an inflammatory skin disease whose pathogenic mechanisms remain unclear. Using a validated human AD-like mouse model, we observed that skin remodeling started at a pre-symptomatic stage of AD that included cellular infiltration of the hypodermis, accompanied with activated/degranulated mast cells (MC). Local MC activation was quantified using a novel method of computer-assisted image analysis we developed and reported. Using a variation of this method, we defined morphometric parameters allowing for quantitation rather than scoring of cellular infiltration. Cell recruitment correlated with MC activation, chemokine production and increased levels of sphingolipid sphingosine-1-phosphate (S1P), produced by sphingosine kinase-1 …

Meigallo, Julia Velasco Espejo

Theses and Dissertations

This work explores the figure of the witch as seen in traditional Galician folklore and in relation to female empowerment and traditional representations of women. It follows two women throughout two distinct timelines (1940s and 1980s) in the region of Galicia, northwest of Spain. The narrative also examines the relationship between social and institutional power, as well as the ways in which folklore can shed light on timeless topics such as gender relations and a community’s interactions with the supernatural.

Intermodal Network Design And Expansion For Freight Transportation, Fateme Fotuhiardakani

Theses and Dissertations

Over the last 50 years, international trade has grown considerably, and this growth has strained the global supply chains and their underlying support infrastructures. Consequently, shippers and receivers have to look for more efficient ways to transport their goods. In recent years, intermodal transport is becoming an increasingly attractive alternative to shippers, and this trend is likely to continue as governmental agencies are considering policies to induce a freight modal shift from road to intermodal to alleviate highway congestion and emissions. Intermodal freight transport involves using more than one mode, and thus, it is a more complex transport process. The …

An Evaluation Of Scenic Design, William Baxter Engle Iii

Theses and Dissertations

“…Allow me to explain about the theatre business. The natural condition is one of insurmountable obstacles on the road to imminent disaster… Strangely enough, it all turns out well… I don’t know. It’s a mystery” -Tom Stoppard

I embraced this quote a long while ago in a moment of disgust and defeat while working through a flawed process of making theatre. Everything takes too long to complete, nothing works right the first time if ever at all, and ultimately the entire process is a maddening mess. It seems to me that the study and practice of the trade can work …

The Reflection, Tamara Joksimovic

Theses and Dissertations

The Reflection– focuses on analysis of two realized Production of University of South Carolina Theatre, and my learning experience during my Professional Internship in The Theatre Company- La Fura Dels Baus, Barcelona, Spain. The Productions that will be the subject are Scapin, written by Bill Irwin and Mark O'Donnell, and directed by Louis Butelli, school year- 2015/2016; and Grounded, written by George Brant, and directed by Robert Richmond, school year- 2016/2017. The analysis will explore the importance of collaboration within the Production process and an understanding of the text and its transposition to theatrical space. It will deal with important …

The Summerville Formation: Evidence For A Sub-Horizontal Stratigraphic Sequence Below The Post-Rift Unconformity In The Middleton Place Summerville Seismic Zone, Joseph Edward Getz

Theses and Dissertations

The Middleton Place Summerville Seismic Zone (MPSSZ) near Summerville, South Carolina was the site of renewed extensive investigation, beginning in the 1970’s, for the source of the 1886 Charleston earthquake. Reactivation of faults associated with a putative fault-bounded Triassic rift basin through analysis of seismic reflection, seismic refraction, and well data has since become the favored interpretation for the source of MPSSZ seismicity. Critical to this interpretation is the association of continental redbed sedimentary rocks in Triassic basins throughout the North American Atlantic margin. Reanalysis of 18 seismic reflection profiles and 25 seismic refraction profiles within the MPSSZ suggests that …

Three Essays On Privatization, State Ownership, And Corporate Policies, Ruiyuan Chen

Theses and Dissertations

This dissertation examines the impact of state ownership on corporate policies in the context of privatization. The first essay provides new evidence about the agency costs of state ownership on corporate cash holdings and new insight into the corporate governance role of country-level institutions. Consistent with agency theory, we find strong and robust evidence that state ownership is positively related to corporate cash holdings. Moreover, we find that the strength of country-level institutions affects the relation between state ownership and the value of cash holdings. In particular, as state ownership increases, markets discount the value of cash holdings more in …