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2014

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Essays On Battle Clusters In Internal Armed Conflicts And Insurgencies: Concept, Causes And Consequences, Chifeng Liu Dec 2014

Essays On Battle Clusters In Internal Armed Conflicts And Insurgencies: Concept, Causes And Consequences, Chifeng Liu

Theses and Dissertations

With the purpose to re-conceptualize the intensity of internal armed conflicts, I argue that the characteristics such as location, scale and duration of “major battlefields,” i.e. the spatio-temporal clusters of combat events are important in the evaluation of impact of modern civil wars and insurgencies. I start with elaborating and constructing a new concept of conflict magnitude with battle clusters using up-to-date geo-referenced data and spatial statistic methods. In the second article, I first explain the location and duration of major battlefields. The findings indicate that an area with multiple non-state armed groups (NSAGs) is more likely to become main …

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Perception Of Police In Public Housing Communities, Taylor Brickley Dec 2014

Perception Of Police In Public Housing Communities, Taylor Brickley

Theses and Dissertations

Research on the relationship between police and citizens consistently finds that attitudes toward police (ATP) are least positive among black citizens in areas of concentrated disadvantage. While much of the research in this area focuses specifically on ATP among young black males in low-income communities because they have the most contact with police, there has been relatively little research that has included older and/or female residents. Additionally, research has yet to examine ATP in racial and economic enclaves that may have different social and environmental characteristics than the surrounding community. This study utilizes in-depth interviews with 60 residents of two …

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Situating Belonging Through Multi-Sited Identities: Community Building Among Middle Eastern Christians In Upstate South Carolina, Amelia Ayoob Dec 2014

Situating Belonging Through Multi-Sited Identities: Community Building Among Middle Eastern Christians In Upstate South Carolina, Amelia Ayoob

Theses and Dissertations

This thesis is a Human Geography perspective on immigrant identity and integration. Using the case of a diverse, multigenerational Middle Eastern Christian population in the Upstate region of South Carolina, I explore how Middle Eastern immigrants and their descendants have negotiated belonging and identity in the United States by simultaneously building new social networks in the Upstate and maintaining ties to the Middle East. The focus on a single case allowed for an in-depth exploration of how geographic and historical contexts have shaped the present-day dynamics of the community (broadly defined) constructed around two Catholic churches, one Latin and one …

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Neodymium Isotopic Signature Of The Deep Western Boundary Current And The Distribution Of Neodymium Isotopes And Concentrations Across Line W, Brian Daniel Duggan Dec 2014

Neodymium Isotopic Signature Of The Deep Western Boundary Current And The Distribution Of Neodymium Isotopes And Concentrations Across Line W, Brian Daniel Duggan

Theses and Dissertations

The capacity of the neodymium (Nd) 143Nd/144Nd ratio to trace modern ocean circulation accurately allows for the assumption that the ratio can also accurately trace paleo ocean circulation. Therefore, a complete understanding of Nd cycling and its effect on the isotopic composition in the oceans is vital. Traditionally, Nd isotopic composition (Nd IC) is considered a conservative property in the open ocean, while coastal and margin environments tend to be dictated by nonconservative exchange processes. However, Nd concentrations ([Nd]) in the open ocean typically display a nutrient like profile, increasing with depth. Such a discrepancy between Nd IC and [Nd] …

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Living On The Moon: Women, Home Making, And The House After World War Ii In Shirley Jackson’S We Have Always Lived In The Castle, Leslie Dennis Dec 2014

Living On The Moon: Women, Home Making, And The House After World War Ii In Shirley Jackson’S We Have Always Lived In The Castle, Leslie Dennis

Theses and Dissertations

In my thesis, I concentrate on Shirley Jackson, her novel We Have Always Lived in the Castle, and women’s place in post-World War II American society. To start, I introduce Jackson and her role in literary history, the housewife writer in the 1950s and 60s, and magazine culture. Then I move to a historical perspective of the 1950s and propaganda during the atomic war era. I focus my attention on how government literature worked to contain women in the home and control sexuality and gender roles. Following my discussion of domesticity, I concentrate on the history of the Gothic novel …

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Weight-Gain And Energy Balance, Benjamin Thomas Gordon Dec 2014

Weight-Gain And Energy Balance, Benjamin Thomas Gordon

Theses and Dissertations

Energy balance is the result of a dynamic relationship between energy intake (EI), energy expenditure (EE) and energy storage (ES). These three components of energy balance have extremely complicated associations, and all three major components are consistently influenced by physiologic, psychological, and sociologic factors. Concerted changes between EE and EI result in alterations of the ES. Most often in clinical and research settings, bodyweight is used as marker of body composition (i.e., ES) changes. Traditional measurements of bodyweight do not give an accurate portrayal of ES change or the role it has in energy balance. This dissertation supplies new methods …

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Behavior Of Piezoelectric Wafer Active Sensor In Various Media, Tuncay Kamas Dec 2014

Behavior Of Piezoelectric Wafer Active Sensor In Various Media, Tuncay Kamas

Theses and Dissertations

The dissertation addresses structural health monitoring (SHM) techniques using ultrasonic waves generated by piezoelectric wafer active sensors (PWAS) with an emphasis on the development of theoretical models of standing harmonic waves and guided waves. The focal objective of the research is to extend the theoretical study of electro-mechanical coupled PWAS as a resonator/transducer that interacts with standing and traveling waves in various media through electro-mechanical impedance spectroscopy (EMIS) method and guided wave propagation. The analytical models are developed and the coupled field finite element analysis (CF-FEA) models are simulated and verified with experiments. The dissertation is divided into two parts …

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Surface Functionalization Of Inorganic Substrates With Polymeric Ligands Using Raft Polymerization, Anand Viswanath Dec 2014

Surface Functionalization Of Inorganic Substrates With Polymeric Ligands Using Raft Polymerization, Anand Viswanath

Theses and Dissertations

This work focused on using polymers to modify the surface of various inorganic substrates, ranging from TiO2, ITO, CDSe and CdS nanostructures to micron sized silica particles. The synthesis of the polymers using the RAFT technique and the characterization of the functionalized substrates were analyzed in detail to provide insights into their use for various applications. In the first part of this work, novel phosphate based RAFT agents and phosphate containing polymers, including poly(methyl methacrylate) (PMMA), poly(glycidyl methacrylate) (PGMA) and poly(dimethyl siloxane) (PDMS) were synthesized. Alkyne functionalized PGMA was used to click to ITO surfaces in a grafting-to method, and …

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Temporal Constraints On Holocene Initiation And Termination Of Mound Development At An Episodic Gas Hydrate And Cold Seep System, Woolsey Mound, Northern Gulf Of Mexico, Nathan Robinson Dec 2014

Temporal Constraints On Holocene Initiation And Termination Of Mound Development At An Episodic Gas Hydrate And Cold Seep System, Woolsey Mound, Northern Gulf Of Mexico, Nathan Robinson

Theses and Dissertations

Woolsey Mound is a thermogenic gas hydrate and cold seep system in the deepwater (900m) Gulf of Mexico. A set of sub-bottom seismic profiles acquired at MC-118 Woolsey Mound provide decimeter-scale vertical resolution of the upper ~50m of the subsurface throughout the lease block. Integration of these data with radiocarbon, lithostratigraphic, and biostratigraphic data from shallow gravity cores provides the basis for detailed interpretation of the mound evolution within the last 12,000 years. Uniform sedimentation during the Last Glacial Maximum and following changes in sediment distribution over MC-118 suggests modern mound activity did not begin until at least ~12ka. Development …

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Who Let The Elephant In The Room? Analyzing Race And Racism Through A Critical Family Literacy Book Club, Lamar L. Johnson Dec 2014

Who Let The Elephant In The Room? Analyzing Race And Racism Through A Critical Family Literacy Book Club, Lamar L. Johnson

Theses and Dissertations

The purpose of this study was to interpret, investigate, and analyze how race, racism, and power are embedded and intertwined not only in society but also in the education system and in homes and communities. Specifically, through parent and student engagement during a series of book club meetings, I investigated how parents’ racial identities impacted how they created critical dialogue pertaining to issues of race, racism, and power with their children. Guided by critical race pedagogy, critical race theory (CRT) and CRT methodology, this study used race as a critical analytic lens to examine the lives and work of people …

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Task-Specific Human Capital Accumulation And Wage Outcomes Among Young Men: An Empirical Analysis, Morgan Holland Dec 2014

Task-Specific Human Capital Accumulation And Wage Outcomes Among Young Men: An Empirical Analysis, Morgan Holland

Theses and Dissertations

Existing literature suggests that investment in different kinds of task-specific human capital may have significant effects on wage outcomes and overall economic wellbeing of individuals. To examine this claim, the accumulation of task-specific human capital in young male workers with no college education and its effects on wages is measured. Using National Longitudinal Survey of Youth panel data merged with six task-specific human capital measures derived from the Dictionary of Occupational Titles task contents data, fixed effects regression was utilized to measure how workers’ taskspecific human capital develops over time. This process shows that among the task measures used, accumulation …

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Quantifying Individual Losses In A Direct Methanol Fuel Cell, Jennifer Rae Ruffing Dec 2014

Quantifying Individual Losses In A Direct Methanol Fuel Cell, Jennifer Rae Ruffing

Theses and Dissertations

The performance of a direct methanol fuel cell (DMFC) is complicated due to the complex interactions of kinetic and transport processes. As a result, changes in one aspect of the cell have consequences in other aspects, which are difficult to elucidate from the full-cell polarization (i.e. voltage vs. current) behavior that fuel cell researchers often use to characterize the performance of their systems. The objective of this work was to develop a strategy to use current and voltage relationships from anode half cells, cathode half-cells, and a hydrogen pump, coupled with methanol crossover data and a mathematical model, to quantify …

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Numerical Modeling Of Free Surface Flows Using Depth Averaged And 3d Models, Khaled Mamdouh Mohamed Abdo Dec 2014

Numerical Modeling Of Free Surface Flows Using Depth Averaged And 3d Models, Khaled Mamdouh Mohamed Abdo

Theses and Dissertations

The objectives of the research presented in this dissertation are to develop and apply numerical models to study free surface flows under different boundary conditions, bedform geometry and channel configuration. A 2D depth-averaged model is developed by solving the Saint Venant or the shallow water equations using a finite volume method. An existing 3D model, developed in-house, that solves the Reynoldsaveraged Navier-Stokes equations and conservation equations for suspended sediment and conservative species is adapted for free surface flows by solving the volume of fluid (VOF) equation using a compressive interface capturing scheme for arbitrary meshes, CICSAM. The depth-averaged or shallow …

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School-Based Sexuality Education, Gender, And Relationship Self-Efficacy: A Moderated-Mediation Analysis Of Sexual Behavior In First-Year College Students, Sara C. Schmidt Dec 2014

School-Based Sexuality Education, Gender, And Relationship Self-Efficacy: A Moderated-Mediation Analysis Of Sexual Behavior In First-Year College Students, Sara C. Schmidt

Theses and Dissertations

While the effectiveness at abstinence-only versus comprehensive sexuality education in preventing adolescent risky sexual behavior is widely researched, little is known about whether material learned in secondary school sexuality education classes impacts emerging adult sexual behavior in the college environment. Furthermore, research suggests that self-efficacy – or beliefs in one’s abilities to organize and execute actions – may be more critical than knowledge or skills in terms of how individuals enact behavior. We hypothesized a moderated-mediation effect by which the causal impact of type of sexuality education on four different sexual behaviors during the first year in college is transmitted …

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Simulation Based Evaluation Of Multiscale Small Area Health Models, Purbasha Dasgupta Dec 2014

Simulation Based Evaluation Of Multiscale Small Area Health Models, Purbasha Dasgupta

Theses and Dissertations

The effects of scale on the analysis of spatial data, often referred to as the modifiable areal unit problem in spatial studies, is one of the issues often encountered in small area health models. These spatial effects of scale are also seen in the areas of disease mapping where data are usually available in counts. Often there is a need to consider the different scales of aggregation that exist within count data, since inferences based on analyses can vary if we change the definition of the unit of analysis. This thesis provides a framework that describes the distribution of relative …

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Modeling Mussel Mortality: Investigating The Importance Of Swash And The Potential Implications Of Changing Wave Environments, Shadow Leigh Gulledge Dec 2014

Modeling Mussel Mortality: Investigating The Importance Of Swash And The Potential Implications Of Changing Wave Environments, Shadow Leigh Gulledge

Theses and Dissertations

Rising sea level and increases in temperature are causing biogeographic shifts in intertidal zones and can also lead to shifts in the local vertical zonation of organisms due to changes in body temperature during aerial exposure during low tide. Swash is an important determinant of aerial body temperatures, and vulnerability of intertidal zones to changes in climate could potentially depend on how much and how often animals are cooled by waves. While wave heights (and thus swash) are generally expected to increase with climate change, anthropogenic physical structures, such as breakwaters and wave energy converters, can decrease wave height and …

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The Effects Of Multiple Gratitude Interventions Among Informal Caregivers Of Persons With Dementia And Alzheimer's Disease, Cristy Degregory Dec 2014

The Effects Of Multiple Gratitude Interventions Among Informal Caregivers Of Persons With Dementia And Alzheimer's Disease, Cristy Degregory

Theses and Dissertations

The purpose of this group randomized intervention trial was to examine the impact of participation in three telephone-based gratitude interventions on the physical, psychological and social functioning of participants in caregiver support groups who are unpaid family caregivers of persons with dementia and Alzheimer’s disease. Fredrickson’s (2001) Broaden-and-Build Theory informed the investigation of the effect of three gratitude interventions on participants’ levels of gratitude, positive aspects of caregiving, subjective well-being, physical health and mental health. This was a randomized, wait-list controlled study involving informal caregivers involved in support groups. The research questions were: 1.) How does gratitude contribute to subjective …

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Which Student Characteristics Correlate With Discipline Referrals? A Case Study Of A Diverse, High-Poverty Rural School District In The South, Jeannie Baltimore Monson Dec 2014

Which Student Characteristics Correlate With Discipline Referrals? A Case Study Of A Diverse, High-Poverty Rural School District In The South, Jeannie Baltimore Monson

Theses and Dissertations

The purpose of this study was to examine the correlates of discipline referrals in a diverse, high-poverty rural school district. The framework is based upon the Diamond (2004) study which, like this research, was built on the notion that socioeconomic inequality is a major factor for disproportionality in student discipline. This study identified the assets and deficits of the sample population and analyzed them in relationship to the referrals accrued. This study was conducted in a small, rural, southern school district. Of the population, approximately 78% are on free and reduced lunch and is made up of Caucasian students, 53%, …

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Alterations To Taste Preference In Mc4r Haploinsufficiency Manifest Prior To Dietary Induced Obesity And Are Accompanied By Dendritic Spine Alterations To Medium Spiny Neurons Of The Nucleus Accumbens In Adulthood, Robert Francis Roscoe Jr. Dec 2014

Alterations To Taste Preference In Mc4r Haploinsufficiency Manifest Prior To Dietary Induced Obesity And Are Accompanied By Dendritic Spine Alterations To Medium Spiny Neurons Of The Nucleus Accumbens In Adulthood, Robert Francis Roscoe Jr.

Theses and Dissertations

Obesity has reached epidemic proportions in the United States and has become an increasing public health concern for developed nations. Haploinsufficiency of melanocortin receptor 4 has been identified as the single most common monogenetic cause of obesity in humans. Using the MC4R +/- haploinsufficient rat, we sought to determine potential alterations in body weight and morphology, locomotor activity, sucrose concentration preference, and progressive-ratio operant testing in a dietary-induced obesity environment. Rats were placed on four separate diets corresponding to 1.7% saturated fat with 12.2% total kcal/fat, 6% saturated fat with a 40% total kcal/fat, 12% saturated fat with a 40% …

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An Engineering Approach For The Design Of Archaeological Reburial Systems, Angel Ari Perez Mejia Dec 2014

An Engineering Approach For The Design Of Archaeological Reburial Systems, Angel Ari Perez Mejia

Theses and Dissertations

Archaeological sites are a non-renewable resource which is often our only link to the past. However, sites are under constant threat of destruction due to construction activities. Civil engineers and archaeologists must the work together to ensure both the continued survival of archaeological sites while allowing for development to continue. Reburial systems, when properly designed and constructed, allow for the protection of archaeological sites while allowing the continued use of the land. However, because reburial as an intentional conservation technique is relatively modern, practice is fragmented and there are no universally accepted guidelines. Current reburial system design relies on prescriptive …

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'Precious Objects': Strange 'Things' In James And Wharton, John Kinard Dec 2014

'Precious Objects': Strange 'Things' In James And Wharton, John Kinard

Theses and Dissertations

In this work, I attempt to examine the importance of things, the strange agency of objects, which emerges in the literature of the late nineteenth century. To this end, I examine the economy of things in both Henry James and Edith Wharton. I attempt to connect this object agency with the emergent discourses and technologies of the time, and to link these both with media and queer theory.

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Differentiating Self-Reported Imagery Abilities With Functional Magnetic Resonance Imaging, Brian D. Seiler Dec 2014

Differentiating Self-Reported Imagery Abilities With Functional Magnetic Resonance Imaging, Brian D. Seiler

Theses and Dissertations

Motor imagery (MI), a top-down knowledge-driven process involving the deliberate cognitive simulation or rehearsal of an action without engaging in overt physical movements, shares the same neural networks as movement execution improving motor learning and enhancing performance of motor tasks. The capacity to form images is not universal, and is a variable, moderating factor of neural activity impacting intervention effectiveness and distinguishing between individual imagery abilities. Measuring imagery abilities through self-report measures (i.e., MIQ-3 and VMIQ-2) is common, but the importance of behavioral and neuroimaging techniques have also been highlighted. Despite the robustness of these questionnaires, few studies have investigated …

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On The Development Of High Strain Rate Experiments For The Characterization Of Engineering Materials, Silas P. Mallon Dec 2014

On The Development Of High Strain Rate Experiments For The Characterization Of Engineering Materials, Silas P. Mallon

Theses and Dissertations

In order to predict the damage accumulation and failure processes associated with highly dynamic events such as blast loading, shock wave loading, and ballistic impact loading, a commensurate understanding of the fundamental constitutive and fracture behavior of materials subjected to such high rate loading conditions is necessary. In this effort, high strain rate experimental facilities consisting of a shock tube apparatus and a torsional split Hopkinson bar apparatus have been designed, constructed, and subsequently used to investigate the mechanical properties of an array of engineering materials subjected to a variety of dynamic loading conditions. Designs for the experimental equipment utilized …

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Examining The Influence Of Healthy Eating Identity On Shopping Behaviors, Jordan Brittingham Dec 2014

Examining The Influence Of Healthy Eating Identity On Shopping Behaviors, Jordan Brittingham

Theses and Dissertations

Eating identity is shown to be a promising measure capable of enhancing our understanding of nutrition behavior. Persons with healthy eating identities are less likely to consume the typical American diet and report healthier diets in general. While there are several studies linking healthy eating identity and diet, there is currently no research examining healthy eating identity in relation to food shopping behavior, an important aspect of nutritional intake. The purpose of this study was to examine the influence of healthy eating identity on shopping behaviors including supermarket utilization, supercenter utilization, likelihood of shopping at the nearest store, distance to …

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Slow Wave Structures Integrated With Ferro-Magnetic And Ferro-Electric Thin Films For Smart Rf Applications, B M Farid Rahman Dec 2014

Slow Wave Structures Integrated With Ferro-Magnetic And Ferro-Electric Thin Films For Smart Rf Applications, B M Farid Rahman

Theses and Dissertations

Modern communications systems are following a common trend to increase the operational frequency, level of integration and number of frequency bands. Although 90-95% components in a cell phone are passives which take 80% of the total board area. High performance RF passive components play limited role and are desired towards this technological advancement. Slow wave structure is one of the most promising candidates to design compact RF and mm-Wave passive components. Slow wave structures are the specially designed transmission line realized by placing the alternate narrow and wide signal conductors in order to reduce the physical size of the components. …

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Remote Sensing Satellite Image Acquisition Planning: Framework, Methods And Application, Shufan Liu Dec 2014

Remote Sensing Satellite Image Acquisition Planning: Framework, Methods And Application, Shufan Liu

Theses and Dissertations

This dissertation explores the theories and methods of satellite remote sensing image acquisition planning within a spatial temporal context. For many time sensitive applications, such as disaster emergency response, timely acquisition of critical information is the key to intelligent and effective decision making. Remote sensing plays an important role in information collection for these time sensitive applications. Imagery collected from hundreds of remote sensing satellite sensors offer accurate, frequent and almost instantaneous data covering the Earth in a relatively short time. However, determining which satellite sensors can provide an appropriated kind of imageries during a restricted collection window for the …

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Functionalized Graphitic Nanoreinforcement For Cement Composites, Nima Zohhadi Dec 2014

Functionalized Graphitic Nanoreinforcement For Cement Composites, Nima Zohhadi

Theses and Dissertations

Physical and mechanical properties of graphitic nanomaterials, in particular multiwalled carbon nanotubes (MWCNTs) and graphene nano-platelets (GNPs) make them promising candidates for nanoreinforcement of cement composites. The two key challenges associated with the incorporation of MWCNTs and GNPs are to attain uniform dispersion and interfacial bonding within the composite matrix. The effects of three main-stream dispersion techniques (namely, ultrasonication, acid-etching, and surfactant-coating) on the mechanical properties and microstructure of MWCNT- and GNP-cement composites were experimentally studied. Compressive strength tests and different characterization techniques including dynamic light scattering, Raman spectroscopy, Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy, and transmission …

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Performance Evaluation Of Three Types Of Passive Micromixer With Convergent-Divergent Sinusoidal Walls, Arshad Afzal, Kwang-Yong Kim Dec 2014

Performance Evaluation Of Three Types Of Passive Micromixer With Convergent-Divergent Sinusoidal Walls, Arshad Afzal, Kwang-Yong Kim

Journal of Marine Science and Technology–Taiwan

A passive split-and-recombination micromixer with convergent-divergent channel walls of sinusoidal variation has been investigated using numerical simulations. With water and ethanol as working fluids, the analysis was performed using Navier-Stokes equations with convection-diffusion model in a Reynolds number range, 10  Re  70. Performances of three configurations with different split-and-recombination arrangements were evaluated in terms of mixing index and pressure drop. A parametric study was also conducted with two geometrical parameters, i.e., the ratios of throat-width to diameter of circular wall and diameter of circular wall to amplitude. The results showed a significant dependence of the mixing performance on …

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Discoid And Asymmetrical Gyroless Micro-Satellite Off-Modulation Attitude Control With Kalman Filter, Ho-Nien Shou Dec 2014

Discoid And Asymmetrical Gyroless Micro-Satellite Off-Modulation Attitude Control With Kalman Filter, Ho-Nien Shou

Journal of Marine Science and Technology–Taiwan

The gyroless attitude control method and kalman algorithm procedures presented in this paper are applicable to asymmetrical microsatellites of any shape with large mass variation and without angular rate sensors. The attitude sensors include a three-axis magnetometer, a horizon sensor, and a coarse sun sensor (CSS), which together serve as an analytic platform and help in ensuring the stability of attitude controls. The attitude control problem of microsatellites has become a focal point because microsatellite fabrication processes are short, costless, and can be flexibly used for various purposes. The center of mass of the microsatellite can be offset because of …

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Synthetic Physical Models For Animating Unsteady Fish Motions, Shyh-Kuang Ueng, Hong-Kai Chen Dec 2014

Synthetic Physical Models For Animating Unsteady Fish Motions, Shyh-Kuang Ueng, Hong-Kai Chen

Journal of Marine Science and Technology–Taiwan

This paper presents physical models for simulating unsteady fish motions, including bursting, gliding, braking, turning, ascending and descending. A new wave model, the controllable body wave model, is developed to undulate the fish body to produce bursting and gliding motions. A key frame approach is adopted to realize braking, turning, descending and ascending. In the key frame method, individual motions are decomposed into sequences of key steps. The gestures of the fish in these key steps are recorded and regarded as key frames. In the run time, these recorded key frames are sequentially reproduced to generate swimming patterns. In addition …

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