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Isotopic Analysis Of Human Migration Among The Ancient Maya Of Ambergris Caye, Belize, Rachel L. Smith
Isotopic Analysis Of Human Migration Among The Ancient Maya Of Ambergris Caye, Belize, Rachel L. Smith
Electronic Theses and Dissertations
This thesis uses the isotopic composition of tooth enamel from two Maya sites on Ambergris Caye Belize, to identify basic patterns of population movement among the Classic period Maya. Three individuals from San Juan and ten individuals from Chac Balam will shed light on the origin of individuals buried at the sites, including those with nonlocal grave goods. Strontium and oxygen isotope values provide new information on Maya coastal populations and suggest that at least one individual with a distinct body position had a nonlocal origin. Carbon isotope values reveal a childhood diet related to, but not the same as, …
Maya Bone Tool Technologies At Ucanal, Guatemala, Jacob Harris
Maya Bone Tool Technologies At Ucanal, Guatemala, Jacob Harris
Electronic Theses and Dissertations
A key part of understanding Maya bone tool production is studying the rare assemblages containing bone tools and bone tool debitage. The Late Classic J-2 assemblage is a distinct composition of lithic, charcoal, human and animal bone at the site of Ucanal, Guatemala. The number of sites with high concentrations of fauna remains are well, and sites with high concentrations of worked bone is even rarer. This thesis is an analysis of the worked and unworked faunal elements excavated in 2019 from Operation 1B of the J-2 assemblage. The primary purpose of this thesis is to further understand Maya bone …
Computational Modeling Of Shock Wave Propagation In A Layered Composites, Nicholas Ryan Scott
Computational Modeling Of Shock Wave Propagation In A Layered Composites, Nicholas Ryan Scott
Electronic Theses and Dissertations
Modeling and simulation of a metallic flyer plate impacting a woven glass-fiber reinforced plastic (GRP) plate at different velocities was performed using the ALE3D© finite element code. The one-dimensional strain-based shock wave propagation experimental data in terms of time history of GRP’s back surface material particle velocity, available in open literature [1], were utilized in the calibration of a continuum damage mechanics (CDM) model. The experimental data included D7 Tool Steel and 7075-T6 aluminum flyer plates and two different GRP thicknesses (6.8 mm or 13.6 mm) with varying impact velocities in the range of about 8.5 m/s to 418 m/s. …
Do These Violent Delights Have Violent Ends? Social Norms, Alcohol, & Sexual Cyberbullying, Anandi C. Ehman
Do These Violent Delights Have Violent Ends? Social Norms, Alcohol, & Sexual Cyberbullying, Anandi C. Ehman
Electronic Theses and Dissertations
Sexually aggressive behavior is well-documented among college students. However, little is known about the role technology may play in facilitating this behavior. Given that social norms have been established as a useful framework for understanding problematic and risky behavior in college students, the current authors sought to determine whether this theory might also provide insight into the use of technology to facilitate sexually aggressive behavior. Thus, this work sought to determine whether sexually aggressive behavior which occurs through the use of technology and social media, henceforth known as sexual cyberbullying, mediated the relationship between perceived social norms of sexually aggressive …
Post-Soul Speculation: An Exploration Of Afro-Southern Speculative Fiction, Hilary Word
Post-Soul Speculation: An Exploration Of Afro-Southern Speculative Fiction, Hilary Word
Electronic Theses and Dissertations
ABSTRACT This thesis is an examination of female authored, post-soul, Afro-Southern speculative fiction. The specific texts being examined are My Soul to Keep by Tananarive Due, Stigmata by Phyllis Alesia Perry, and Sing, Unburied, Sing by Jesmyn Ward. Through exploration of these texts, I posit two large arguments. First, I posit that this thesis as a collective work illustrates how women-authored Afro-Southern speculative fiction based in the post-soul era embodies and champions womanist politics and praxis critical for liberation through speculative elements. Second, I assert that this thesis is demonstrative of how this particular type of fiction showcases the importance …
Formulation Development Of Curcumin-Piperine Solid Dispersion Via Hot-Melt Extrusion To Enhance Solubility And Bioavailability Of Curcumin, Abdulmajeed Althobaiti
Formulation Development Of Curcumin-Piperine Solid Dispersion Via Hot-Melt Extrusion To Enhance Solubility And Bioavailability Of Curcumin, Abdulmajeed Althobaiti
Electronic Theses and Dissertations
Curcumin has been known to have a variety of biological activities in different diseases, including inflammation, cancer, and diabetes. The limited bioavailability of curcumin is due to its low solubility and extensive metabolism, rendering curcumin unusable as an oral therapeutic agent. The aim of the study is to enhance the solubility and bioavailability of curcumin by preparing curcumin-piperine solid dispersion (SD) utilizing the hot-melt extrusion technique. Three physical mixtures with different ratios were prepared as following: F1 (5% w/w piperine, 15% w/w curcumin, 80% w/w Soluplus®), F2 (10% w/w piperine, 30% w/w curcumin, 60% w/w Soluplus®), and F3 (15% w/w …
Chemical And Biological Evaluations Of Asimina Triloba And Rollinia Mucosa., Taghreed Ali Majrashi
Chemical And Biological Evaluations Of Asimina Triloba And Rollinia Mucosa., Taghreed Ali Majrashi
Electronic Theses and Dissertations
Studies have shown the potential risks of neurodegeneration associated with chronic consumption of plants of the Annonaceae family, which emphasize the need for further studies to identify the neurotoxic compounds in the edible annonaceous plants and compare their risk to their benefits in defeating cancer. Our study is focused on the alkaloidal constituents of two plants from the Annonaceae family, Asimina triloba and Rollinia mocusa. This study was carried out to explore the anticancer and neurotoxic constituents of the plants with the intention that separating neurotoxic constituents would help in reducing the undesirable effects of the plants if it is …
Development Of An Ophthalmic Nanoemulsion Topical Formulation For Corneal Wound Healing, Chuntian Cai
Development Of An Ophthalmic Nanoemulsion Topical Formulation For Corneal Wound Healing, Chuntian Cai
Electronic Theses and Dissertations
Corneal wound healing is a complex process involving cell death, migration, proliferation, differentiation, extracellular matrix remodeling and a various of growth factors. Of these factors, interleukin-1 and transforming growth factor beta allow the effectiveness of cell migration and tissue repair. Current management advocates multiple therapies aimed to prevent inflammation, avoid the fibrosis. Pirfenidone (PFD) has recently been investigated for its anti-fibrotic effect. The current study was undertaken to develop and optimize PFD-loaded nanoemulsion (NE; PFD-NE) which could increase the drug load and the duration of activity. Hot homogenization and probe sonication methods were used for the preparation of PFD-NEs, sesame …
Elucidating The Sloth Hair Microbiome: A Metagenomic Comparison Of Two- And Three-Fingered Sloths, Maya Kaup
Elucidating The Sloth Hair Microbiome: A Metagenomic Comparison Of Two- And Three-Fingered Sloths, Maya Kaup
Electronic Theses and Dissertations
Sloths are unusual mobile ecosystems containing a high diversity of symbionts living and growing in their fur. These symbionts include poorly studied algae, arthropods, fungi, and bacteria, making sloths likely reservoirs of unexplored biodiversity. I aim to identify gaps and eliminate misconceptions in our knowledge of sloths and their symbionts, and to identify key questions to spur future research into the functions and roles of sloths within a broader ecological and evolutionary context. I also seek to position the sloth fur ecosystem as a model for addressing fundamental questions in microbial and metacommunity ecology. I used whole-community shotgun metagenomic sequencing …
Adequate Carbohydrate Intake And Hydration Status In Female Division I Collegiate Soccer Players, Peyton William Byars Dixon
Adequate Carbohydrate Intake And Hydration Status In Female Division I Collegiate Soccer Players, Peyton William Byars Dixon
Electronic Theses and Dissertations
The purpose of this study was to discern whether total grams of carbohydrate (CHO) consumed is associated with next day urine specific gravity (USG). Twenty-four Division I female collegiate soccer players with a mean age of 19.6 (SD=1.15) who were part of the team during pre-season summer training camp in August of 2019 volunteered to participate in this research. Athletes recorded food intake for six days during pre-season summer training camp. Food records were verified by a Board-Certified Specialist in Sports Dietetics and analyzed using NDSR. Athletes’ hydration statuses were evaluated using a daily assessment of USG, via spontaneous urine …
Nonstandard Interactions And B-Hadron Decays, Saeed Kamali
Nonstandard Interactions And B-Hadron Decays, Saeed Kamali
Electronic Theses and Dissertations
In this work, we study the decays of heavy hadrons that contain the b quark. We study the decay modes B → D(*) τ-¯ʋ_τ Λb → Λc τ -¯ʋ_τ and B → Xc τ -¯ʋ_τ and analyze the effects of beyond the standard model new physics in various observables of these decay modes. This is important since the measurements of the decay B → D(*)τ -¯ʋ_τ deviate from the standard model predictions and this points to physics beyond the standard model. We also study CP violation in the angular distribution of the decay B → D*(→ Dπ) µ- ¯ʋµ and …
Reconstructing The Paleogeography Of Norphlet Formation In Conecuh County, Alabama, Bram Allen
Reconstructing The Paleogeography Of Norphlet Formation In Conecuh County, Alabama, Bram Allen
Electronic Theses and Dissertations
The Norphlet Formation is a Jurassic age siliciclastic unit overlying the Louann Salt and beneath the Smackover Formation within areas of Louisiana, Mississippi, and Alabama. The Norphlet Formation in Alabama is known to be dominated by a broad desert plain stretching from east to west, rimmed to the north and east by the Appalachians and to the south by a developing shallow sea. The top of the Norphlet formed the surface for deposition of the overlying Smackover Formation. This surface was flooded by a rapid influx of marine water that was the environment of deposition for the carbonate units of …
Mississippi Teachers Who Are Nationally Board Certified Or Those With Advanced Degrees: Effects On Student Achievement, Amy Tate Barnett
Mississippi Teachers Who Are Nationally Board Certified Or Those With Advanced Degrees: Effects On Student Achievement, Amy Tate Barnett
Electronic Theses and Dissertations
The purpose of this research study was to determine the interaction effects national board certified teachers (NBCTs) and teachers with advanced degrees (ADs); while considering school accountability levels, had on student achievement. This study examined whether significant differences existed in student achievement between the eight identified groups of teachers and how the factors of NBCT status, AD status, and accountability contributed. The study examined student achievement in grades three through eight on the end-of-the-year state assessments for the 2017-18 school year. This research endeavor relied upon the recruitment of local Mississippi school districts and their willingness to participate and share …
Come Clean, Joshua Nguyen
Come Clean, Joshua Nguyen
Electronic Theses and Dissertations
"Come Clean" is a poetry collection.
Lidocaine Mucoadhesive Film Fabrication Using Fused Deposition Modeling 3d Printing, Mohammed Yahya Alyahya
Lidocaine Mucoadhesive Film Fabrication Using Fused Deposition Modeling 3d Printing, Mohammed Yahya Alyahya
Electronic Theses and Dissertations
Hot-melt extrusion and 3D printing are among the recent means of processing techniques adopted in the pharmaceutical industry. These technologies are used as a method of preparing solid dispersions develop complex shapes that are difficult to be obtained using other means of production. In the current research work, many formulations loaded with lidocaine HCl were prepared and extruded using 11mm twin-screw extruder. The extrudate filaments were then fed into a fused deposition modelling (FDM) printer to fabricate mucoadhesive films meant to buccal applications to manage local pain within the oral cavity that requires the intervention with local anesthetics. The printed …
Nest Microclimate Manipulation Affects Growth, Development, And Heat-Shock Protein Production In The Eastern Bluebird (Sialia Sialis), Brooke E. Sykes
Nest Microclimate Manipulation Affects Growth, Development, And Heat-Shock Protein Production In The Eastern Bluebird (Sialia Sialis), Brooke E. Sykes
Electronic Theses and Dissertations
Climatic conditions are particularly important to breeding birds, especially as recent global change has caused a shift in the timing and length of avian breeding seasons. Nest microclimate has been shown to influence avian development and parental care, however, little work has been done to examine whether increased heat poses a cost to altricial nestlings at different stages of their development. We manipulated the temperature of eastern bluebird (Sialia sialis) nest boxes to examine whether or not nestlings exhibit a heat shock response, and a difference in growth or altered parasite loads at both their early and late developmental stages. …
Service-Learning, Comcore, And The Secondary English Classroom: A Mixed Methods Study, Kimual Snow
Service-Learning, Comcore, And The Secondary English Classroom: A Mixed Methods Study, Kimual Snow
Electronic Theses and Dissertations
ABSTRACT The prevalence of high-stakes, standardized testing, along with the emergence of the ComCore State Standards has decreased teachers’ capacity to establish and implement authentic learning opportunities for students in 21st century secondary English classroom. In a progressive literacy environment, teachers must commit to real-world learning that allows students to navigate complex informational texts without sacrificing high curriculum standards. A number of qualitative studies reveal how service-learning has been used in various classrooms to address deficiencies in student motivation and engagement, which in turn, sought to increase students’ academic outcomes. However, few provide the quantitative evidence that administrators want to …
African American Gospel Piano Style In The 21st Century: A Collective Case Study, Roderick Vester
African American Gospel Piano Style In The 21st Century: A Collective Case Study, Roderick Vester
Electronic Theses and Dissertations
The purpose of this study was to examine the African American gospel piano style in the 21st century, further examining the role of musical enculturation, transmission, and preservation through the lived experiences and perspectives as reported by five gospel pianists throughout the United States. A collective case study design (Stake, 1995) was used to explore how the gospel piano style is being learned, developed, transformed, transmitted, and preserved. Research questions focused on participants’ beliefs about the stylistic transformation of gospel piano in the 21st century and factors that influences those beliefs such as past and present stylistic developments. The data …
Aproaches To Develop Acyclovir Gastro-Retentive Formulations Using Hot Melt Extrusion Technology, Peilun Zhang
Aproaches To Develop Acyclovir Gastro-Retentive Formulations Using Hot Melt Extrusion Technology, Peilun Zhang
Electronic Theses and Dissertations
The aim of the current study was to prepare and compare acyclovir (ACV) floating gastro-retentive formulations synthesized via hot-melt extrusion (HME) techniques using P-CO2 and sodium bicarbonate. Physical mixtures of ACV (20%, w/w) and HPC EF (70%, 60%, w/w) with HPC MF (10%, w/w) or HPMCAS-LG (10%, w/w) were prepared using a co-rotating twin-screw extruder with a screw configuration shoin Figure 2. P-CO2 was injected into zone 9 of the extruder or NaHCO3 was added (10% w/w) during the extrusion process. In vitro dissolution studies (0.1 N hydrochloric acid medium) demonstrated that the formulations floated on the medium because of …
Habitat Selection Across A Temperature And Nutrient Gradient By Cope’S Grey Treefrog (Hyla Chrysoscelis) And The Mosquito, Culex Restuans, Sarah Christine Mcnamara
Habitat Selection Across A Temperature And Nutrient Gradient By Cope’S Grey Treefrog (Hyla Chrysoscelis) And The Mosquito, Culex Restuans, Sarah Christine Mcnamara
Electronic Theses and Dissertations
Habitat selection by pond breeding amphibians and insects is often critical for larval survival, performance, and resulting parental fitness, since there is typically little parental care beyond oviposition site choice. Numerous axes of patch quality have been identified and quantified, but species with varied life histories may differently shift perception of habitat quality as changes in global climate increase water temperatures and rates of eutrophication. Three outdoor mesocosm experiments were conducted using two species with complex life cycles and very different life histories; Hyla chrysoscelis, or Cope’s Gray tree frog, and the mosquito (Culex restuans). Two mesocosm experiments were conducted …
Transition Stories Of Student Veterans, Kelley J. Jenkins
Transition Stories Of Student Veterans, Kelley J. Jenkins
Electronic Theses and Dissertations
The purpose of this phenomenological study is to describe the transition experience for student veterans enrolled in the three largest universities in Mississippi: Mississippi State University, The University of Mississippi, and The University of Southern Mississippi. Schlossberg’s Transition Theory was used as a lens for viewing the results of this study. This phenological approach will take a social constructivist worldview in order to describe the veteran transition experience. Data was collected using semi structured interviews, transcribed, and analyzed. Each veteran’s story was written in a narrative form to provide rich detail for better understanding of their experiences. The interview transcripts …
Determining The Effectiveness Of Rock Mass Classification Schemes When Used To Derive Empirical Predictions For Rock Mass Deformation Modulus, Tanner Cecil Avery
Determining The Effectiveness Of Rock Mass Classification Schemes When Used To Derive Empirical Predictions For Rock Mass Deformation Modulus, Tanner Cecil Avery
Electronic Theses and Dissertations
Normal deformation modulus of rock masses (Erm) is a critical design parameter for any permanent excavation and infrastructure project that requires limited or controlled deformations to ensure performance of permanent support systems and of foundations. Despite being a key parameter, the optimal methods for determining Erm is still debated. These methods can be put into three categories: in-situ tests, empirical solutions, and numerical solutions. Current efforts to derive empirical predictions rely on rock mass classification schemes (RMCS) with the assumption that all RMCS are similarly effective at predicting Erm. Since different RMCS use different sets of variables this assumption does …
Admission Officers' Perceptions Of Implicit Bias In The Admission Process, Christi Denise Hardy
Admission Officers' Perceptions Of Implicit Bias In The Admission Process, Christi Denise Hardy
Electronic Theses and Dissertations
Although they are not involved in the decision making process, admission officers at institutions of higher learning could have a significant effect on the admission process. For the purposes of this research, admission officers are defined as the primary personnel assisting applicants to complete their applications through the collection of applications, fees, essays, transcripts, test scores, and other supplemental documents required by the institution for admission consideration. More specifically, their implicit biases could significantly affect the admission process. Research on implicit biases is on the rise, and studies investigating this issue in health care and hiring practices are abundant. Implicit …
Role Of Insulin-Like Growth Factor 1 Receptor In The Regulation Of Astrocyte Structure, Function And Cognition, Disha Prabhu
Role Of Insulin-Like Growth Factor 1 Receptor In The Regulation Of Astrocyte Structure, Function And Cognition, Disha Prabhu
Electronic Theses and Dissertations
Levels of Insulin-like growth factor I (IGF-1) are reduced in several neurological disorders, including aging and neurodegeneration. Aged animals have reduced IGF1 signaling and exhibit impairment in cognition. Supplementing rodents with IGF-1 reverses some of the cognitive deficit, suggesting that IGF-1 signaling could potentially be targeted to ameliorate cognitive decline in older adults. For this, a thorough understanding of the mechanisms by which IGF-1 regulates the function of various cell types in the brain is needed. A majority of studies have focused on the effects of IGF-1 regulating neurons. However, astrocytes that form roughly about 40% of brain mass also …
Assessing Distance Perception In Virtual And Augmented Realities With Electroencephalography, Ethan Luckett
Assessing Distance Perception In Virtual And Augmented Realities With Electroencephalography, Ethan Luckett
Electronic Theses and Dissertations
A comfinding in spatial perception research is that subjects tend to underestimate distances in virtual reality compared to the real world. The degree and methods of measurement of underestimation vary between studies, but the trend of underestimation is consistent. This study uses electroencephalography as a neuroimaging technique to examine patterns of brain activity when fixating objects in near space and far space in the real world, in virtual reality, and in augmented reality. For the augmented reality condition, a custom optical see-through augmented reality head-mounted display (HMD) was built and calibrated. A calibration method was developed to correct the geometric …
An Analysis Of Efl Learners’ Foreign Language Anxiety And Their Motivation To Learn English, Maide Beyza Cayli
An Analysis Of Efl Learners’ Foreign Language Anxiety And Their Motivation To Learn English, Maide Beyza Cayli
Electronic Theses and Dissertations
This thesis aims to investigate English-language learners’ foreign language anxiety and their motivations to learn English in an American context. The adapted versions of The Motivation/Attitude Questionnaire (Ozturk 2012), and Foreign Language Anxiety Scale (Horwitz et al 1986) were given to 34 Intensive English Program students at a college in Southeastern United States. The participants in the Advanced and Advanced Plus Level have shown moderate level of Foreign Language Anxiety and Motivation. The results have prevailed that the students with higher proficiency levels have had slightly higher level of motivation. Yet, the participants with a higher level of English proficiency …
Maurice E. Peloubet: A Life Of Impact On Accountancy And Society, Brandi Holley
Maurice E. Peloubet: A Life Of Impact On Accountancy And Society, Brandi Holley
Electronic Theses and Dissertations
Maurice E. Peloubet was one of accountancy’s major players during the profession’s highly evolutionary period in the United States from before World War I to the Vietnam War. Though Peloubet spent his entire career from 1911 to 1964 in public accounting, he also promoted the profession on the academic, governmental, and international fronts. This dissertation explores his contributions to the profession of accountancy and in turn society at large. Particular focus is placed on his role in the evolution of the American Institute of Certified Public Accountants (AICPA), his lobbying efforts before Congress concerning the Last-In, First-Out (LIFO) Inventory method …
The Summer Melt Of Rural First-Year Students, Deidre F. Ruffin
The Summer Melt Of Rural First-Year Students, Deidre F. Ruffin
Electronic Theses and Dissertations
For many rural students, the future seems limited, and immediate dreams of college attendance appear to be just out of reach. Rural college-bound students are often faced with parental figures with lower educational attainment than the national average, geographic isolation, declining community infrastructure, and negative social dynamics tied to race, class, and income inequality. In this qualitative case study, I will examine the perceived barriers which contribute to summer melt of rural students. Summer melt is a term applied to students that apply to college, are accepted to college, but melt away from the enrollment cycle in the summer months …
Differential Semantics, William Michael Cox
Differential Semantics, William Michael Cox
Electronic Theses and Dissertations
Differential Semantics is a theoretical accounting of the semantic complexity found in natural language, particularly that of the academic and literary registers. It addresses natural language semantics in terms of its contribution to the characterization and expression of creative thought, beginning the perception and conceptualization of objective reality, folloby the metacognitive development of idiosemantic connotations in reference to those conceptualizations, and finally, the intuitive process of implication and inference that facilitates the abstraction and communication of thought.
Beautiful And Terrible In The Face: Reconfiguring The Southern Beauty Myth Through The Short Fiction And Autobiographical Writings Of Eudora Welty, Katherine Elizabeth Howell
Beautiful And Terrible In The Face: Reconfiguring The Southern Beauty Myth Through The Short Fiction And Autobiographical Writings Of Eudora Welty, Katherine Elizabeth Howell
Electronic Theses and Dissertations
From her personal appearance as the “ugly duckling” of southern literature, to her narrative preoccupations as a writer of grotesques, Eudora Welty has been critically separated from the realm of southern beauty and femininity. Drawing textual evidence from Welty’s strategic invocation of beauty acts and products in her short fiction and autobiographical writings, this thesis insists upon Welty’s lifelong stake in beauty culture, as it is practiced by southern women across the socioeconomic spectrum. Across her body of short fiction—a substantial portion of which was first published in women’s fashion magazines—Welty details the ways in which beauty, as expressed through …