Digital Commons Network^™

Geometric Optimization Of A Heaving Point Absorber Wave Energy Converter, Ian Riley

College of Graduate Studies: Theses & Dissertations

Wave energy shows significant potential for development into a competitive renewable energy source. Non-renewable resources are finite and contribute to adverse effects on the environment. Development of wave energy conversion devices that use heave motion as the primary driver for converting wave energy into electrical potential is explored through optimizing the geometry of an axisymmetric partially submerged buoy in deep water. The governing equations of motion and hydrodynamic forces are solved for in one degree of freedom using ANSYS Aqwa. An external PTO device is simulated to induce power capture in the system. Four different geometric shapes are tested and …

Imperial Anxiety And Irish Myth: A Case-Study Of T.C. Boyle’S Water Music, Connor Mabry

College of Graduate Studies: Theses & Dissertations

There is a long history of returning to a collective past or history during periods of cultural anxiety in human history. In what I term late-imperial anxiety comes a slew of writers returning to mythology and folklore in response to changing cultural and political environments around them. T.C. Boyle is living in a vastly changing America during the 1960s and 70s when he writes and publishes his first novel, Water Music. Boyle participates in the tradition of hearkening to the past to face the future by drawing from popular Irish mythology for his novel. In it he adapts popular …

Sacred And Profane Loves: The Renaissance Influence In C.S. Lewis' Till We Have Faces, Kevin Corr

College of Graduate Studies: Theses & Dissertations

C.S. Lewis’ last novel, Till We Have Faces: A Myth Retold, has often been regarded as his greatest work, but just as often as his most enigmatic work. The purpose of this thesis is to unveil much of the novel’s mystery by considering the impact Renaissance literature had in shaping the novel, most notably Edmund Spenser’s Faerie Queene. Although it is well-known that Lewis was Professor of Medieval and Renaissance Literature at Cambridge, current scholarship on Lewis has overlooked the Renaissance influence in the author’s work, which particularly plays a vital role in Till We Have Faces. …

Parrots And Palms: Analyzing Data To Determine Best Management Strategies And Sustainable Harvest Levels, James P. Gibbs, J. Michelle Cawthorn, Adriana Bravo, Ana L. Porzecanski

Biology: Faculty Publications

This exercise¹ presents a scenario and raw data on a realistic conflict between parrot conservation and palm tree harvest. It requires that students analyze data very comparable to what would be gathered in the field, to: 1) construct a life tables for the palm and parrot, 2) extract vital statistics about both the palm and parrot population from the life tables, 3) estimate maximum sustainable yield for both species, and 4) make a decision about the sustainability of harvest intensity. It illustrates the importance of data analysis skills for conservation.

Forelimb Position Affects Facultative Bipedal Locomotion In Lizards, Chase T. Kinsey, Lance D. Mcbrayer

Biology: Faculty Publications

Recent work indicates that bipedal posture in lizards is advantageous during obstacle negotiation. However, little is known about how bipedalism occurs beyond a lizard's acceleratory threshold. Furthermore, no study to date has examined the effects of forelimb position on the body center of mass (BCoM) in the context of bipedalism. This study quantified the frequency of bipedalism when sprinting with versus without an obstacle at 0.8 m from the start of a sprint. Forelimb positions were quantified during bipedal running at the start of a sprint and when crossing an obstacle. Two species with contrasting body forms (and thus different …

Tissue Specificity Of Sex-Biased Gene Expression And The Development Of Sexual Dimorphism, Albert K. Chung

College of Graduate Studies: Theses & Dissertations

One prominent form of phenotypic diversity in nature is the dramatic difference between males and females within a single species. A central genetic obstacle which must be overcome is that two distinct phenotypes must be produced from a single, shared genome. One genetic mechanism that is of particular import that would allow sexes to overcome the limitation of a shared genome is sex-specific regulation of gene expression. Although sex-biased gene expression is generally predicted to increase over ontogeny as male and female phenotypes diverge, this pattern should be most pronounced in tissues that contribute to the most extreme aspects of …

Morphological And Behavioral Traits Associated With Locomotion In Lizards, Chase T. Kinsey

College of Graduate Studies: Theses & Dissertations

Morphology, locomotion, and behavior are co-adapted to optimize performance and ultimately fitness. Successfully navigating a complex environment is dictated by an animal’s locomotor behavior, and for some behaviors, its locomotor performance. The locomotor performance of an organism is directly related to the form and function of the structures involved in locomotion such that movement is efficient – that is, minimal loss of energy. The first chapter of this thesis focuses on the effects of obstacle placement and forelimb position on facultative bipedalism. Placing an obstacle beyond a lizard’s acceleration threshold did not affect the frequency of bipedal posture. Furthermore, the …

Evaluating Elasmobranch Bycatch And Shark Depredation In The Georgia Shrimp Fishery, Matthew M. Scanlon

College of Graduate Studies: Theses & Dissertations

The Georgia shrimp fishery has seen a dramatic decrease in profit and productivity since the 1980’s due to a number of economic factors. Additional, yet undocumented, pressures on this fishery include interactions between foraging sharks with trawl gear. Fishermen report that sharks frequently bite nets in an attempt to prey on netted fish, resulting in large holes in the gear. Further elasmobranch interactions with trawl gear occur as bycatch; shrimp trawls represent nearly 100% of elasmobranch commercial bycatch in Georgia state waters, the species composition of which is largely unstudied. Shark interactions with nets were detailed through fishery-dependent observations on …

A Motion Capture System Framework For The Study Of Human Manufacturing Repetitive Motions, Francis Mendez, David Wierschem, Jesus Jimenez

15th IMHRC Proceedings (Savannah, Georgia. USA – 2018)

Our research proposes a framework to obtain and analyze real time data concerning the dynamic and natural motion of individuals in manufacturing-like processes that involve human labor. The framework that we propose consists of five main components: a tracking system, a system of sensors, a processor that collects time series data, data processing and discovery module, and an alert or reporting component. Using motion capture cameras, data is collected on a variety of human subjects performing simulated labor-intensive manufacturing operations. This data is analyzed for identification of actual and optimal activity motions. This project has significant potential impact for contribution …

What Happens After You Are Shocked? An Investigation Of Emotional Response, Brand Attitude, Attitude Toward Ad And Purchase Intention Of Shock Advertising In Chinese Consumers, Shuo Yan, Sindy Chapa

AMTP Proceedings 2018

The goal of this paper is to validate the emotion toward the ad scale among Chinese consumers as well as test several well-accepted hypotheses in advertising literature in shock advertising setting. The results of our study suggested that emotion was correlated with attitude toward ad (Aad), the casual relationship between Aad and Attitude toward brand (Ab), and the correlation between Ab and purchase intention (PI). A validated emotion scale was also proposed to measure emotions after viewing ads in Chinese consumers. A 17-item feelings toward ads (emotion) scale was finalized by using EFA. Suggestions for future research were discussed.

Money, Marketing, And Missions: Ethics And The Structure Of Not-For-Profits, Karen Barbee, Stephen Lemay

AMTP Proceedings 2018

This article explores the relationship between the structure of not-for-profit organizations and the ethical issues, moral hazards, and public perceptions they are likely to face. It offers a preliminary taxonomy of organizations based on their structures and relates key ethical issues to each of those categories. It also ties these issues to the role that marketing plays in both creating and dealing with ethical issues.

Does Observational Learning Influence Spatial Pattern Learning?, Matthew Bruster

College of Graduate Studies: Theses & Dissertations

Previous studies have indicated both human and non-human animals come under control of a hidden spatial pattern when engaged in an open field search task, and rats appear to exhibit social learning in such tasks through the influence of a conspecific on their search behavior. Although human participants appear to perform similarly in both real-world and virtual environment versions of a spatial pattern search task, evidence from human participants for social learning in such a task remains lacking. The current experiments tested the influence of social learning (observational learning) on human performance in a spatial pattern learning task within a …

Expressions Of Optimism Bias And "Self" Versus "Other" Perceived Controllability In The Context Of Military-Related Risks, Lauren Lachica-Muschett

College of Graduate Studies: Theses & Dissertations

This study aimed to examine expressions of optimism bias and perceived controllability specifically regarding risks often associated with military service. Optimism bias refers to people’s tendency to believe they are less susceptible to experiencing negative life events compared to others. Previous studies show high levels of optimism bias are associated with strong perceptions of personal controllability. Optimism bias is a significant aspect of health promotion research particularly in the field of general occupational health and safety (OHS). However, optimism bias has never been investigated in the military OHS domain. Given the number of risks associated with military occupations, examination of …

Environmental And Physiological Regulation Of Yellow Stingray Color Change, Theresa Rose Gunn

College of Graduate Studies: Theses & Dissertations

Many reef fishes exhibit dynamic coloration and body patterns that can change under nervous or hormonal control. Several species of benthic sharks and rays likely alter melanin in the skin to provide background matching for camouflage. The yellow stingray (Urobatis jamaicensis) is a benthically-oriented elasmobranch with elaborate spot patterns that provide effective camouflage within its habitats. This patterning, when coupled with the ability to alter melanin in response to background color, could increase background matching effectiveness in these species. The yellow stingray has been anecdotally noted to lighten or darken skin color.However, it is unclear whether this type …

The Effects Of Preceding Stimuli Formats On Proportional Reasoning Ability In Elementary School Students, Natalie D. Branch

College of Graduate Studies: Theses & Dissertations

The National Mathematics Advisory Panel (2008) described fraction knowledge as the most important, yet most underdeveloped foundational skill among students. Due to the complex nature of fraction education, this study sought to understand the underlying fraction problem-solving skill of proportional reasoning in the hopes of gaining insight into children’s problem-solving strategies in order to implement more focused educational designs. The current study examined the effects of stimuli formats on children’s proportional reasoning ability by presenting four conditions involving two formats (continuous and discrete). Previous research indicates that students perform better on continuous stimuli and the goal of this study was …

Predictors Of Fish Assemblage Structure And Dynamics In Atlantic Coastal Plain Streams, Rebecca Scott

College of Graduate Studies: Theses & Dissertations

Effective management of freshwater fishes requires a mechanistic understanding of the drivers of assemblage composition; in other words, what determines who is where and when. Stream fish assemblages are potentially influenced by environmental factors that act on multiple spatiotemporal scales, but the relative influence of these drivers may vary between geophysically distinct regions. This study sought to determine the patterns and drivers of fish taxonomic and functional assemblage composition in the coastal plain, a region possessing unique hydrologies, faunas, and physiochemical conditions. I addressed this goal using two complementary chapters, both of which utilized environmental and biotic data collected from …

Comparison Of Three Benthic Macroinvertebrate Passive Sampling Devices For Non-Wadeable Streams, Kelsey A. Laymon

College of Graduate Studies: Theses & Dissertations

Rivers and streams provide essential ecosystem services to the degree that the monitoring and maintenance of these systems becomes imperative. Biomonitoring provides managers and policymakers with the tools to make informed decisions, and macroinvertebrates are often the object of biomonitoring because they are ubiquitous in most systems and are known to be good indicators of water quality. However, methods for sampling macroinvertebrates in non-wadeable streams (i.e., large rivers) have not been standardized across states and regions and an established method for macroinvertebrate biomonitoring in large rivers of Georgia is not currently available. My study compared macroinvertebrates collected with three types …

Characterizing The Complex Relationship Between The Brown Widow Spider And Its Bacterial Endosymbiont, Wolbachia, Emily Knight

College of Graduate Studies: Theses & Dissertations

The brown widow spider, Latrodectus geometricus (C. L. Koch 1841), has been found to harbor the maternally inherited bacterial endosymbiont Wolbachia pipientis (Hertig and Wolbach 1924), but endosymbiont infection frequency varies widely among Southeastern US populations. Wolbachia is known to manipulate the reproduction of its hosts through male feminization, parthenogenesis, male killing, and cytoplasmic incompatibility. In brown widows, Wolbachia does not alter sex ratios, but any other effects the symbiont has on the spider are unknown. In my first chapter, I assess if there is linkage between Wolbachia infection and maternally inherited mitochondrial DNA (mtDNA) in three brown widow populations. …

Foraging Ecology Of A Winter Bird Community In Southeastern Georgia, Rachel E. Mowbray

College of Graduate Studies: Theses & Dissertations

Classical views on community structure emphasized deterministic processes and the importance of competition in shaping communities. However, the processes responsible for shaping avian communities remain controversial. Attempts to understand distributions and abundances of species are complicated by the fact that birds are highly mobile. Many species migrate biannually between summer breeding grounds and wintering grounds. The goal of this study was to test four hypotheses that attempt to explain how migratory species integrate into resident assemblages of birds (Empty-Niche Hypothesis, Competitive-Exclusion Hypothesis, Niche-Partitioning Hypothesis, and Generalist-Migrant Hypothesis). I collected data on birds foraging during the winter of 2017-2018 in Magnolia …

University Honors Program Honors Thesis/ Capstone Handbook 2018-2019, University Honors Program, Georgia Southern University

Honors College: Thesis Handbook (2018-2023)

No abstract provided.

Temporal Changes In Submarine Groundwater Discharge In A Georgia Salt Marsh, Tanner C. Avery, Jacque L. Kelly

Earth, Environment & Sustainability: Faculty Presentations (1988-2022)

No abstract provided.

An Exploratory Study On Ethical And Legal Issues Of Marketing Strategies In The Cigarette Industry: Perspectives On E-Cigarettes, Jason Bruce Kilby, Ismet Anitsal, Melek Meral Anitsal

AMTP Proceedings 2018

Cigarette and E-Cigarette companies use different marketing strategies to promote their product. Some of these marketing strategies could be considered by many to be both unethical as well as illegal. Many ethical and legal issues surround the cigarette industry and these same issues could be relevant in the emerging E-cigarette industry. This research organized cigarette industry behavior into a matrix where a behavior was classified on whether it was ethical, unethical, legal or illegal. In order for a behavior to be considered ethical it must meet the minimum standard of being legal except under moral exception. What is considered to …

Sports Logistics Outsourcing: A Conceptual And Qualitative Study In The Equine Industry, Stephen E. Genchev, Gordon Gray, Stacia Wert-Gray

AMTP Proceedings 2018

The equine industry, despite its considerable impact on the economy, remains overlooked in contemporary supply chain research. The current paper aims at narrowing the gap along two directions: First, the equine industry supply chain is conceptualized, and its main participants and relationships involved are identified. Second, the complex nature of these relationships is illustrated within the context of a specific strategic decision, outsourcing. For years, outsourcing was considered a formal transaction-cost economics decision with little or no consideration for additional factors. This limiting perspective provides the stimulus for the current study’s use of a qualitative approach to get a better …

Irrational Aggregates, Courtney N. Ryan

College of Graduate Studies: Theses & Dissertations

This thesis paper examines the work included in my Master of Fine Arts thesis exhibition entitled Irrational Aggregates. The goal of this work is to facilitate a dialogue between our natural environment and the excessive consumer-based environments in which we live. Combining a variety of ceramic techniques including hand building, wheel throwing, and casting these sculptures appear to be grown from, and even taken over by nature itself.

Often drawing inspiration from my personal narrative, that of consistent upheaval, relocation, and adjustment to new places, my work can appear both grounded and in a state of motion. I believe …

Functional Analysis Of Tattoos From An Evolutionary Perspective, Elise V. Neville

College of Graduate Studies: Theses & Dissertations

Recently, rates of tattooing in the U.S. have surged despite evidence of negative perceptions of individuals with tattoos. Additionally, perceptions appear to vary by target gender, with tattooed women being perceived more negatively than their male counterparts. The purpose of the current research was to examine (a) if perceptions of those with tattoos indeed vary by gender, (b) if tattoos conceivably serve an evolutionary function and (c) if so, do tattoos serve different functions for women and men. An evolutionary approach takes into consideration the purpose an observed behavior may serve for the individual in terms of how it solves …

Reduced Exhaust Emissions Through Blending N-Butanol With Ultra Low Sulfur Diesel And Synthetic Paraffinic Kerosene In Reactivity Controlled Compression Ignition Combustion, Remi Gaubert

College of Graduate Studies: Theses & Dissertations

Increasing restrictions on the emitted exhaust emissions in diesel engines are becoming a more challenging task than in previous years. An electronic common rail fuel injection system and a port fuel injection (PFI) system were developed for an experimental engine to research dual fuel combustion. The experimental research was conducted at 1500 rpm and 4, 5, and 6 bar indicated mean effective pressure (IMEP). n-Butanol was port fuel injected at a 60% by mass fraction coupled with direct injection (DI) of three fuels, including ultra-low sulfur diesel (ULSD RCCI), a 50-50 wt-% blend of ULSD and butanol (ULSD-Bu RCCI), and …

Characteristics And Functions Of Non-Mound Mississippian Sites: A Case Study Of Fitzner North End (9sn256), Lindsey R. Hinson

College of Graduate Studies: Theses & Dissertations

The Mississippian time period (A.D. 900-1600) in the Southeast of North America began with the development of ranked societies where the elite governed from and resided in administrative centers with earthen mounds and no formal bureaucracy. Much of the remaining population lived at smaller, non-mound sites. Given that the majority of people in these polities lived at non-mound sites, it is important to understand these places and their contexts. Current literature does not provide a clear architectural grammar of how these sites are defined socially or archaeologically. Due to variations in socio-political organization, and amount of excavation and research, site …

More Than Skin-Deep: Reading Past Whiteness In Hemingway’S “Hills Like White Elephants”, Laura Valeri

Writing & Linguistics: Faculty Publications (1990-2022)

The author argues a much neglected element in the seminal Hemingway's story "Hills Like White Elephant." Reading the story by taking into context a subtext of racial bias lends new interpretation to the story.

Swamp Creatures, Kristin Van Tassel

Wraparound South (Archived)

No abstract provided.

Biscuits, Butter, And Me, Molly Mcconnell

Wraparound South (Archived)

No abstract provided.