Digital Commons Network^™

The Rational Synthesis Of Supported Noble Single Or Bimetallic Catalysts By Electrostatic Adsorption, Hyeran Cho

Theses and Dissertations

Many catalysts are today prepared by impregnation (also called incipient wetness or dry impregnation) in which nominal amounts of metals are placed into the amount of solution just necessary to fill the pore volume of the support material. While dry impregnation (DI) is simple and the amounts of metals easily controlled, no attention is paid to metal-support or metal-metal interaction. When DI-deposited metal precursors are reduced, the particles tend to be large in size and there is often ppor contact between two metals in a bimetallic system. In this work we demonstrate the application of "strong electrostatic adsorption" (SEA) for …

The Use Of Ultrasound As An Adjunct To X-Ray For The Localization And Removal Of Soft Tissue Foreign Bodies In An Urgent Care Setting, Stacy Lane Merritt

Theses and Dissertations

Embedded soft tissue foreign bodies are common complaints of patients presenting to rural urgent care centers. The removal of soft tissue foreign bodies present challenges for the healthcare provider when objects are radiolucent and cannot be identified on readily available diagnostic imaging modalities such as plain radiographs (X-rays). Ultrasound has been introduced in the literature as a useful adjunct to X-rays for the localization and removal of soft tissue foreign bodies. The purpose of this research utilization project was to report the use of bedside ultrasound by healthcare providers as an adjunct to X-ray for the localization and removal of …

An Institutional History Of The Higgins Armory Museum And Its Relationship With Worcester, Massachusetts, Kary Ashley Pardy

Theses and Dissertations

This thesis examines the institutional history of the Higgins Armory Museum through its connection with the industrial city of Worcester, Massachusetts. It documents the museum's beginning as a commercial museum connected with the Worcester Pressed Steel Company and analyzes both Worcester and the Armory's survival methods when their affiliated industries folded under economic pressures following World War II. The thesis follows the Higgins' attempted transformation to a nationally-recognized museum of arms and armor, and concludes with the Armory's identity struggles and eventual merger with the Worcester Art Museum.

Essays On Market Dominance And Price Discovery, James Michael Lockwood

Theses and Dissertations

In the first essay, I examine the burden of cross-listing prices to adjust to changes in exchange rates. Using a 3-system vector moving average model, I measure the effects of exchange rate shocks on cross-listing stock prices in the home and U.S. markets. My sample consists of 46 cross-listings on the NYSE from Canada, Brazil, and Mexico. Findings indicate that New York prices bear roughly 60% of the adjustment to exchange rates for Canadian and Mexican securities, and roughly 45% for Brazilian securities. The NYSE burden of adjustment varies considerably across firms, ranging from 7% to 100% for Canada, 10% …

An Analysis Of Achievement Between Single Gender Education And Coeducational Models In Select Middle Schools In South Carolina, Roy Lee Givins Jr

Theses and Dissertations

he purpose of this study was to examine the effect of single gender education on the overall academic achievement of students in reading and mathematics. Four research questions, focused on math and reading assessment scores, were developed to guide the study. The research was focused on the results of the Measures of Academic Progress assessments administered to students each academic year. The population of student scores selected to be studied were those of seventh grade students in two middle schools in the Upstate of South Carolina. The reason for studying this grade level was due to the fact that it …

The Relevance Of Sarcasm In Resolving Ambiguous References In Spoken Discourse, Sara Ann Peters

Theses and Dissertations

DISS_para>Sarcasm, or sarcastic irony, involves expressing a message that is often opposite of the literal meaning of what is being said, in a way that may sound bitter, or caustic (Gibbs, 1986). In the past, sarcasm has been viewed as a method of introducing the possibility of alternative interpretations of a discourse, by creating ambiguity as to the intended discourse interpretation. The current series of experiments sought to demonstrate that sarcasm could be viewed as beneficial in resolving ambiguity in conversation, by highlighting particular interpretations and thus ease processing, dependent on other available contextual information. Two Visual World studies …

Responding To Tripadvisor: How Hotel Responses To Negative Online Reviews Effect Hotel Image, Intent To Stay, And Intent To Return, Tiffany Avant

Theses and Dissertations

Online guest reviews have become an important facet of consideration when guests decide on a hotel. Similarly, research has been done that shows a correlation between guest satisfaction and hotel responses to online reviews. However, little research has been done to show specifically how hotel management responses to comments posted on online review sites such as Tripadvisor influence guest intent to stay. This study will investigate how guest perception of hotel image, guest intent to stay, and guest intent to return are impacted by hotel responses to negative online feedback. The data reveals that providing a service recovery response to …

Perceptions Of Elementary School Principals: Turning High Poverty Elementary Schools In South Carolina Into High-Performing Elementary Schools, Katie Wall Barber

Theses and Dissertations

There is no question that economic deprivation has an adverse impact on student achievement. In the United States, the gaps in achievement among poor and advantaged students are substantial. Through multiple studies, the United States Department of Education (2006) indicated results that "clearly demonstrated that poverty adversely affected student achievement." Closing the achievement gap and achieving success for all students presents a challenge for schools, particularly those located in high-poverty areas (Brock & Groth, 2003). Current research illustrates that some schools, often referred to as high-performing, high-poverty schools, have led their low-income student populations to high levels of achievement, matching …

Parent Perceptions Of Audiology And Speech-Language Services And Support For Young Children With Cochlear Implants, Patrick Michael Kelly

Theses and Dissertations

Parents of children diagnosed with severe-profound sensorineural hearing loss are selecting cochlear implants at an increasing rate and when their children are very young. Audiologists and speech-language pathologists are typically involved in habilitation activities following implantation in an effort to increase children's access to listening and spoken language. These clinicians depend upon parents to participate in habilitation activities that may lead to favorable outcomes for children. However, little evidence exists regarding parents' perspectives on the services and supports audiologists and speech-language pathologists provide in this team effort. Parents can offer valuable feedback to clinicians regarding the type and quality of …

Determining The Differences In Hurricane Perception And Evacuation Behavior In The Elderly Of South Carolina, Gregg C. Bowser

Theses and Dissertations

The United States is becoming a "grayer" nation. U.S. Administration of Aging projections indicate that by 2030 nearly 20 percent of the national population will be aged 65 or older, with a significant portion of this growth occurring along the hurricane-prone Atlantic and Gulf coasts. This demographic shift creates new challenges for emergency management. Previous research shows that the elderly do not perceive risks and warnings the same way as other groups, and as a result may react differently to risk. Disproportionately high fatality rates for the elderly in recent disasters indicate that these differences are a key determinant of …

Functional Block Copolymers For Applications In Advanced Materials, Energy Storage, And Lithography, Christopher George Hardy

Theses and Dissertations

Block copolymers spontaneously self-assembly into a wide variety of ordered nanostructures on the length scale of 5 - 100 nm due to the thermodynamic immiscibility between the covalently linked, chemically distinct polymer chains. Incorporating desirable functional groups into block copolymer systems can lead to confinement of the functional group to a specific domain upon microphase separation of the block copolymer. The resulting materials display desirable characteristics of the functional group in a well-ordered nanostructure. Such systems have been utilized in a wide variety of applications including catalysis, ceramic materials, and membranes. This dissertation is focused on the synthesis, characterization, self-assembly …

Social Media, A New Revolution In The Field Of Marketing: The Effect Of Information Sharing, Peer Pressure, Entertainment And Emotional Connection On The Attitude Towards The Brand And In Turn The Purchase Intention From The Brand, Sradha Narendra Sheth

Theses and Dissertations

Social Media has today become one of the fastest and strongest networking and communication tools. Companies realizing the importance of this new marketing revolution have also ventured into the world of social media. Thus, the purpose of this study is to examine the effect of social media marketing on user's attitude towards the brand present on social media and their purchase intentions from the brand. The relevance of this study will provide great insights to retailers with regard to using multiple social media sites and their features to successfully market their products, retain and grow their customer base.

The Effect Of Cancer Cachexia Severity And Eccentric Muscle Contractions On Selected Myofiber Metabolic Properties In Mouse Skeletal Muscle, Joshua Earl Mangum

Theses and Dissertations

Cancer cachexia is a complex syndrome that induces skeletal muscle wasting and dysregulation of skeletal muscle metabolism. Alterations in area of myofibers and myofiber metabolic properties can significantly impact the function of skeletal muscle. The purpose of this study was to examine the effect of cachexia severity and resistance exercise training on frequency and area of selected myofiber metabolic characteristics during cachexia-induced myofiber atrophy. Male ApcMin/+ (Min) mice were studied during the progression of cachexia (16-20 weeks of age) and stratified into groups based on the severity of cachexia. For the second study, male Min mice performed resistance exercise (RE) …

Bmi At Diagnosis And Its Association With Markers Of Hiv Disease Progression And Cardiovascular Disease Risk., Kelly Deshon Johnson

Theses and Dissertations

Highly active antiretroviral treatment (HAART) has transformed the state of human immunodeficiency virus (HIV) from acute to chronic. As a result, the long-term effect of HAART has caused weight gain among HIV-infected individuals, leading to an increased prevalence of overweight and obesity. Increased Body Mass Index (BMI) has been associated with adverse health outcomes in non-HIV and HIV populations, yet among HIV-infected individuals, a higher BMI at diagnosis offers a slower progression from HIV to AIDS. Pre-HAART, studies reported that obese HIV-infected individuals have higher increases in CD4 count over time. However post-HAART, some report that overweight HIV-infected individuals with …

Environmental Effects On Mechanical And Thermal Behaviors Of Zinc Oxide Nanobelts And Dispersion Of Carbon Nanostructures, Yingchao Yang

Theses and Dissertations

One-dimensional (1-D) nanostructures, such as nanowires, nanobelts, and nanotubes of different materials, have significant applications as nanoscale interconnects and active/functional components of electronic and optoelectronic devices, sensors, actuators, nanoelectromechanical systems (NEMS), and energy generation/conversion systems. The thermal and mechanical stabilities of those nanodevices and nanoenabled energy systems are of both theoretical and practical interests. Thermodynamic properties of nanomaterials are different from those of bulk materials. As the size of a solid particle reduces to the nanometer scale, the surface-to-volume ratio increases and the melting temperature may remarkably decrease. The functionality and/or reliability of those nanodevices and nanoenabled energy systems are …

Comparison Of A Particle Filter And Other State Estimation Methods For Prognostics Of Lithium-Ion Batteries, Eric Alan Walker

Theses and Dissertations

A particle filter (PF) is shown to be more accurate than non-linear least squares (NLLS) and an unscented Kalman filter (UKF) for predicting the remaining useful life (RUL) and time until end of discharge voltage (EODV) of a Lithium-ion battery. The three algorithms track four states with correct initial guesses and 5% variation on the initial guesses. The more accurate prediction performance of PF over NLLS and UKF is reported for three Lithium-ion battery models: a data-driven empirical model, an equivalent circuit model, and a physics-based single particle (SP) model.

The Financial Nexus Of College Choice And Persistence At For-Profit Institutions, Benjamin James Bryan

Theses and Dissertations

This study examined student persistence to attainment at for-profit institutions of higher education using the financial choice-persistence nexus theoretical framework (St. John, Paulsen, & Starkey, 1996). Nexus theory predicts that when students' experiences are not consistent with expectations, students perceive that their implicit contract with the institution has been violated and may choose to leave. This phenomenon has not previously been studied in the for-profit sector. This study examined how students' expectations of college, related to their choice of institution, subsequently impact their persistence decisions at for-profit schools, and how students' expectations affect the way that financial influences such as …

Protein Identification Using Bayesian Stochastic Search, Christina Nicole Lewis

Theses and Dissertations

Current methods for protein identification in tandem mass spectrometry (MS/MS) involve database searches or de novo peptide sequencing, with database searches being the standard method. With database searches, issues arise when the species is not in the database. Shortcomings of de novo peptide sequencing and database searches include chemical noise, overly complex fragments, and incomplete b and y ion sequences. Here we present a Bayesian approach to identifying peptides. Our model uses prior information about the average relative abundances of bond cleavages and the prior probability of any particular amino acid sequence. The proposed likelihood function is composed of two …

Structural Health Monitoring Of Composite Laminates Using Piezoelectric And Fiber Optics Sensors, Catalin Roman

Theses and Dissertations

This research proposes a new approach to structural health monitoring (SHM) for composite laminates using piezoelectric wafer active sensors (PWAS) and fiber optic bragg grating sensors (FBG). One major focus of this research was directed towards extending the theory of laminates to composite beams by combining the global matrix method (GMM) with the stiffness transfer matrix method (STMM). The STMM approach, developed by Rokhlin et al (2002), is unconditionally stable and is more computationally efficient than the transfer matrix method (TMM). Starting from theory, we developed different configurations for composite beams and validated the results from the developed analytical method …

Multi-Physicochemical Modeling Of Solid Oxide Fuel Cells And Electrolyzer Cells, Yuanyuan Xie

Theses and Dissertations

Multi-physicochemical models are developed for solid oxide fuel cells and electrolysis cells. The models describe the complicated transport processes of charge (electron/ion) conservation, mass/species conservation, momentum conservation, and energy conservation. Transport processes are coherently coupled with chemical reforming processes, surface elementary reaction processes, as well as electro-oxidation processes of both hydrogen and carbon monoxide. The models are validated with experimental data and utilized for fundamental mechanism studies of SOFCs fueled with different type of fuels, such as hydrogen, hydrocarbon, e.g., methane, H2S, and their mixtures. The fundamental mechanisms associated with syngas generation using electrolysis cell are also extensively investigated using …

A Case Study Of Three African-American String Players Participating In A Community Orchestra, Kimberly Prescott Williams

Theses and Dissertations

While there has been interest in the subject of diversity in orchestras and audiences, very little qualitative research exists exploring this issue. The purpose of this study was to identify factors that motivate African-American musicians to begin and maintain involvement in orchestral music. This research is a case-study of three African-American amateur musicians comprised of participant observation, in-depth interviewing, document collection, and analysis. Field observations and interviews occurred over a 22-week period. The resulting analysis revealed common themes that contributed to the participant's initial interest in string music and their continued participation as adults. The availability of music programs in …

A Case Study Seeking Indicators Of Coherence In A Pete Program, Robert John Doan

Theses and Dissertations

A Case Study Seeking Indicators of Coherence in a PETE Program

The purpose of this study was to examine the coherence of one facet of a single PETE program. Of particular interest was the role of one unique content course within the curriculum. Teacher educators have been challenged to respond to a variety of forces and to design more effective programs of teacher preparation. There are at least two challenges for teacher educators to respond to these challenges to their effectiveness. One challenge is that there is little empirical research focused on teacher educators themselves (Grundy & Hatton, 1995; John, …

A Teacher's Perceptions Of Inquiry: Where Inquiry Experiences, Beliefs And Practice Intersect, Michelle Avila Vanderburg

Theses and Dissertations

Linda Darling-Hammond (2008), a member of President Obama's education transition team, published a collection of chapters, each written by prominent researchers in the field of education. Throughout this compilation, the idea of using inquiry in the classroom was heralded again and again. Darling-Hammond argued for the "implementation of inquiry-based curriculum that engages children in extended, constructive work, often in collaborative groups, and subsequently demands a good deal of self-regulated inquiry" (p. 13). Significant in Darling-Hammond's message was that educators need to provide students with experiences that allow them to become inquirers who can construct their own knowledge. However, while the …

Benthic Boundary Layer Processes: Bedform Evolution And Bottom Turbulence, Timothy Robert Nelson

Theses and Dissertations

Bedform roughness, caused by ripples on the seabed, plays an important role in controlling sediment dynamics in the nearshore region. In this dissertation, the temporal and spatial evolution of ripples from two field sites located in the South Atlantic Bight, offshore Long Bay, SC and Georgia are used to relate wave-induced ripple geometry (wavelength and orientation) to near bed directional wave velocities. 2-D spectral analysis techniques were developed to automate detection of ripple wavelength, direction, and irregularity. This analysis showed that magnitude, direction, and duration of wave forcing controls ripple geometry and irregularity. During highly energetic events, ripple geometry changes …

The Wind Chamber Works Of Ernst Toch: A History And Comparative Analysis, C. Nicole Gross

Theses and Dissertations

Ernst Toch (1887-1964) is one of the forgotten composers of the twentieth century. Paul Hindemith, Arnold Schoenberg, and Kurt Weill were contemporaries, while Wilhelm Furtwängler, and Erich Kleiber championed his early works. Toch lamented his lack of notoriety to Nicolas Slonimsky two years prior to his death. Forgotten or underappreciated were his numerous compositions of art music written in the decades prior to his immigration to the United States and in the final years of his career; remembered only were his lighter works and American film music.

Toch composed one work for military band: Spiel für Blasorchester, Op. 39 (1926), …

Essays In The Airline Industry, Mariana Luminita Nicolae

Theses and Dissertations

In 2008, most U.S. airlines implemented checked baggage fee policies to generate additional revenue to help with their financial distress caused by abnormally high fuel prices. Since this time, the fees have provided a steady revenue stream and often are the difference between a profit and a loss. Recently, some literature in the operations management field has postulated that altering consumer behavior in a manner that is beneficial to both the firm and customers is an additional purpose of these fees. In Essay 1, we empirically investigate the airline perspective of this hypothesis by considering the operational impact of airline …

The Relationship Between Electronic Health Record Implementation And Outcomes Of Care For Three Cardiovascular Procedures, Deshia Ann Leonhirth

Theses and Dissertations

Background. The U.S. healthcare movement to improve quality and patient outcomes has prompted investigations into tools that can assist in these aims. Electronic health records (EHRs) are one tool proposed by the Institute of Medicine (IOM). The objective of this original dissertation research was to examine the relationship between electronic health record functionalities and two outcomes of care as proxies for quality: risk-adjusted mortality for abdominal aortic aneurysm (AAA) repair, coronary artery bypass grafting (CABG), and percutaneous coronary intervention (PCI) and log estimated cost-per-discharge. Methods. This study used 2009-2010 hospital inpatient administrative discharge data from the Nationwide Inpatient Sample (NIS), …

Pathways To Equity: An Auto-Ethnographic And Narrative Study Of Teacher Educator And Preservice Teachers In A One-Credit Course And Community-Based Field Experience, Lisa Reid

Theses and Dissertations

the student population in the United States within the next several years, while predominately White teachers will continue to compromise the teaching population. Schools continually fail to serve racially, culturally, and linguistically diverse students, particularly African American students. As such, a critical issue within teacher education is how to best prepare teachers to teach across the lines of ethnicity/race, language, and social class.

In response to this issue, this study looked closely at the identities, perspectives, and experiences of a teacher educator and undergraduate, preservice teachers throughout a one-credit education course infused with elements of equity pedagogies and an added …

An Investigation Into The Influence Of Dietary Saturated Fat And Quercetin Supplementation On Adiposity, Macrophage Behavior, Inflammation, And Non-Alcoholic Fatty-Liver Disease, Reilly Enos

Theses and Dissertations

The overall objective of this dissertation was to examine the degree to which manipulation of the saturated fat content of a high-fat diet influenced obesity-related outcomes as well as to see if the naturally-occurring flavonoid, quercetin, could attenuate the resulting obesity and related metabolic and inflammatory side effects. Specifically, these studies examined 1) the influential role of saturated fat on macrophage function, inflammation, and other obesity-related comorbidities, including non-alcoholic fatty-liver disease, and 2) the potential benefits of quercetin supplementation. Overall, results from these studies suggest that adiposity, macrophage behavior, inflammation, insulin resistance, and non-alcoholic fatty-liver disease progression can be greatly …

The Effects Of Rainfall-Runoff On Particulate Organic Carbon Cycling In Salt Marshes, Si Chen

Theses and Dissertations

Low tide rainfall-runoff processes have been proposed as a kind of coastal ocean "hot moment" capable of transporting disproportionately large amounts of material from the salt marsh surface to the water column. However, the resulting organic matter cycling has not been well characterized and the cumulative effects of recurring short-term low tide rainfall events are not known, especially in the context of outwelling. The purpose of this Ph.D. research is to quantitatively evaluate the effects of low tide rainfall on particulate organic carbon (POC) cycling in a South Carolina salt marsh.

This dissertation is comprised of four parts. First, a …