Digital Commons Network^™

Arc, Lisa Fountain

Electronic Theses and Dissertations

My collection, Arc, is about the struggle to become a human being and to find one’s own identity. Also, it is about how humans fall apart and come together on a regular basis – that we must find forgiveness – we must learn to love in even the most difficult circumstances – and we must, above all, continue to grow, and challenge our personal limits. Life does not contain us –it welcomes us – and that is part of the message I seek to convey through my writing. The imagery in my writing is grounded in my memories of my …

Soil Morphological, Physical, And Chemical Parameters Affecting Longleaf Pine (Pinus Palustris) Site Quality And Ecosystem Restoration Potential In East Texas, Ryan Svehla, Kenneth W. Farrish

Electronic Theses and Dissertations

There has been a large decline in coverage of longleaf pine (Pinus palustris Mill.) within its range in the southeastern United States since the time of European settlement. Due to this decline, interest has developed in the re-establishment of this species on suitable sites. However, many attempts have been unsuccessful in re-establishment, likely in part due to the lack of emphasis on selection of suitable soils. Historically, longleaf pine was found on soils with a wide range of soil properties, including higher quality soils, due to frequent fires which kept many competing species suppressed. Decline in longleaf pine coverage …

Best Practices Used By Assistant Superintendents Of Curriculum And Instruction: Improving Teacher Instruction In A High Accountability Environment, Julie Madden

Electronic Theses and Dissertations

This qualitative multi-case study investigated not only the role of assistant superintendents of curriculum and instruction, but the strategies and best practices used by four assistant superintendents of curriculum and instruction and a deputy superintendent of teaching and learning from East Texas in order to improve classroom instruction and support teachers in the high-stakes testing environment. The study sheds light on the role of central office leaders, their views related to the high-stakes testing environment and the impact they have on instruction for teachers and students. The responses given in this qualitative case study were carefully analyzed in order to …

Monitoring Soft-Mast Production In Pine Woodland Restoration Areas On The Ouachita National Forest, Tamara B. Wood

Electronic Theses and Dissertations

The use of prescribed fire is integral to the restoration of open woodland habitats in the southeast, including shortleaf pine (Pinus echinata) woodlands in the Ouachita Mountains. Mature pine habitats maintained with recurrent disturbances have an open understory with a rich floristic diversity that provides quality habitat for many wildlife species, including the endemic and endangered red-cockaded woodpecker (Picoides borealis). Fire has many potential benefits for wildlife; however, the effects of fire on several important woody soft-mast producing species are not fully understood. Soft-mast quantity and quality is a key component in determining year-round habitat quality …

"Comrades In Their Own Right": Women's Struggle Against Apartheid In The South African Novel, Ntfonjeni Dlamini

Electronic Theses and Dissertations

ABSTRACT

This thesis focuses on women’s struggle against apartheid in the South African novel. By means of textual analysis, the study explores the different ways in which apartheid oppressed women in South Africa and how women responded to the forces of oppression. In fact, at the core of this study is the contention that the anti-apartheid movement was shaped as much by women as it was by men like Nelson Mandela, Walter Sisulu, Steve Biko and Albert Luthuli, who often served as the faces of the anti-apartheid movement. Thus, this thesis situates itself within the scholarship that appreciates and recognizes …

Structural Analysis Of The Northwest Wind Mountain Quadrangle, New Mexico: Proterozoic Shearing To Cenozoic Brittle Faulting In The Burro Mountains, Jensen Kohl Angelloz

Electronic Theses and Dissertations

Preliminary investigation of the Bullard Peak metamorphic series (BPMS) in the northwestern Wind Mountain quadrangle within the Burro Mountains of southwestern New Mexico suggests a possible previously unidentified shear zone, prompting detailed (1:12,000) geologic mapping and collection of structural data. The study area has a complex tectonic history, including 1) ~1.65 Ga metamorphism during accretion of the Mazatzal terrane to Laurentia’s southern margin; 2) ~1.4 Ga intrusion of Granite and Rhyolite Province granitoids; 3) significant uplift during the formation of the Ancestral Rockies (~300 Ma) and the Rocky Mountains (~70-50 Ma); and 4) inversion tectonics with reactivation of compressional faults …

Geology Of The Northern Alto Relex Area, Big Bend National Park, Brewster County, Texas, Robert Schoen

Electronic Theses and Dissertations

Detailed, 1:12,000-scale geologic field mapping was conducted around Alto Relex in the northern Sierra Del Carmen Mountains in Big Bend National Park. Alto Relex is a prominent, near vertical, ~1000 foot-high fault-line scarp. Cretaceous rocks in the area were folded and faulted by Laramide compression, intruded by Tertiary sills and overprinted by high-angle normal faults from Basin and Range extension. During the Laramide Orogeny and Basin and Range extension, the underlying basement shear zone called, the Texas Lineament, was reactivated creating a transpressional and transtensional regimes. The general geology of this area was outlined by Moustafa (1988) working primarily from …

Spray-Dried Cellulose Nanofibril-Reinforced Polypropylene Composites For Extrusion-Based Additive Manufacturing, Lu Wang

Electronic Theses and Dissertations

Compared to conventional manufacturing process, additive manufacturing (AM) offers free-form design, lighter and more ergonomic products, short lead time and less waste. Extrusion-based AM can be used to print thermoplastics. However, extrusion-based AM has processing challenges in printing semi-crystalline thermoplastics, for instance, polypropylene (PP). Cellulose nanofibrils (CNF) are one type of cellulose nanofibers that are produced from pulp fibers. CNF has extraordinary properties which make it an ideal candidate to reinforce polymers. Spray-dried CNF (SDCNF) is able to be incorporated into thermoplastic matrices without modifying conventional processing procedures.

The mechanical properties of 3D printed plastic parts have been considered significantly …

Evaluation Of Genetic Diversity And Stability Of Colocasia Cultivars Using Issr, Seukmin Hong

Electronic Theses and Dissertations

Using 44 ornamental Colocasia cultivars planted at Stephen F. Austin State University (Nacogdoches, TX), cultivar assessment, genetic diversity, stability, and relationship were examined with banding patterns produced from Inter-simple sequence repeat (ISSR) markers. Comparing banding patterns of vegetatively propagated clones of each cultivar, genetic stability was examined. Unweighted pair group method with arithmetic mean (UPGMA) and principal coordinate analysis (PCO) were performed to examine genetic relationship that can explain a need for the new classification Colocasia gigantea and recent movement of re-classifying Colocasia antiquorum. Average Shannon’s diversity index for all loci was found to quantify genetic diversity. The genetic …

Long-Term Sustainability Of Northern Mixedwood Management: Spatial And Temporal Aspects Of Forest Productivity, Bethany L. Munoz

Electronic Theses and Dissertations

Natural disturbances of moderate severity are common in northern temperate forests in Maine, USA. Given estimated return intervals of 575-1000 years for severe windstorms and 385-1200 years for severe fire events, few opportunities arise to evaluate high severity disturbances in northern mixedwood or northern conifer forests. This research evaluated 50-year results of clearcutting with whole-tree harvesting (WTH), stem-only harvesting (SOH), and stem-only harvesting with prescribed burning (SOHB) on growing stock, composition, and relationships among foliar and soil nutrient concentrations. At the other end of the disturbance spectrum, this research also investigated 60-year results of single-tree selection with a 10-year cutting …

Integrated Control Of Colorado Potato Beetle And Potato Virus Y Using Mineral Oil, Andrew K. Galimberti

Electronic Theses and Dissertations

Colorado potato beetle (Leptinotarsa decemlineata) (CPB) and Potato Virus Y (PVY) are two of the most damaging pests attacking potato crops. CPB can cause significant defoliation to potato fields and is difficult to control using insecticides because its populations rapidly develop insecticide resistance. PVY, which is transmitted non-persistently by aphids, can result in yield loss and rejection of seed potato lots. Due to its rapid mode of transmission, insecticides are often ineffective at curtailing the spread of the virus. Thus, an integrated pest management (IPM) approach is essential for both CPB and PVY control.

Mineral oil is a …

Evaluating Potential For Water Quality Decline In Maine Lakes, Kaci N. Fitzgibbon

Electronic Theses and Dissertations

Understanding lake vulnerability with respect to eutrophication and loss of water quality is important for sustainability of aquatic ecosystems. This project aims at identifying and quantifying the effects of relevant physiochemical, climate, and watershed characteristics on lake vulnerability in order to develop management decision tools for the Maine Department of Environmental Protection (MEDEP). In a changing chemical and physical environment, using independent variables from each of these categories and then relating them to the summer lake epilimnetic phosphorus (P) concentrations allows for development of models to inform stakeholders of lake vulnerability to eutrophication problems.

We studied 24 lakes covering a …

Prospective Associations Of Homocysteine, Executive Function, And Depressive Symptoms, Peter J. Dearborn

Electronic Theses and Dissertations

Associations of cardiovascular risk factors, cognitive performance, and depressive symptoms have been well established. However, the directionality of these associations as well as the specificity of these associations with respect to executive function are less clear. Additionally few studies have determined whether genetic risk factors, such as apolipoprotein-E4 (APOE-E4) genotype, and age moderate the associations of cardiovascular risk factors such as homocysteine with changes in depressive symptoms and how these associations may be mediated by cognitive performance. The primary aim of this study was to analyze the bidirectional associations of a full range of cognitive domains and symptoms of depression …

Maine Literature 101: A Course For High School Seniors, Courtney Hawkes

Electronic Theses and Dissertations

In various schools across the state of Maine are teachers devoting their classroom time to exploring the rich history of Maine. At the high school level, many schools now offer at least an elective course in “Maine Studies” and Maine state standards require that local history is covered to a certain extent in high school history. Missing from these courses, however, is a study of Maine’s literature. Literature puts a realistic face to the events of history in a way that helps students see through the eyes of the people from that time period. Literature reveals internal emotions and conflicts …

Production Of Bio-Oil With Different Oxygen Content And Characterization Of Catalytic Upgrading To Transportation Fuel, Mubarak Mohammed Khlewee

Electronic Theses and Dissertations

The world’s increasing population requires an increase in transportation fuel production. The lack of production of transportation fuels due to the shortage of fossil fuel resources combined with concerns about global emissions of carbon dioxide from fossil fuel combustion are the two major issues that have driven researchers to actively pursue alternative sources for oil production. Biomass is being considered as an alternative feedstock to produce fuel and chemicals due to its abundance and renewability. It has many features that make it suitable as a source of transportation fuel production. However, the bio-oil produced by the fast pyrolysis process has …

Dynamic Modeling And Extreme Tension Analysis Of Mooring System For A Floating Offshore Wind Turbine, Wei Ting Hsu

Electronic Theses and Dissertations

For offshore wind industry, exploiting the dynamic behaviors of mooring lines is of increasing importance in floating offshore wind turbine (FOWT) mooring system design. Currently, the design philosophy for structures and moorings is based on principles and practices adopted in offshore oil and gas, including mooring systems that are optimized for applications in deeper waters. However, the design of FOWT mooring systems is facing several challenges, including installation costs, the stability of light-weight minimalistic platforms, and shallow water depths (50-300m). The extreme tension in mooring lines of a light displacement platform in shallow water is dominated by snap loads. Hence …

Envisioning Recovery: A Social-Ecological Systems Analysis Of Maine’S Co-Managed Sea Urchin Fishery, Kimberly L. Ovitz

Electronic Theses and Dissertations

Maine’s sea urchin resource has provided a critical source of income and cultural value to resource harvesters across the state, yet in the absence of adequate governance mechanisms, the urchin resource quickly succumbed to overharvest and persisting stock decline. Following collapse, the urchin fishery transitioned to an advisory co-management system characterized by increased collaboration between urchin harvesters and resource managers. As collaborative dialogue and decision-making continue, fishery participants are collectively envisioning a more sustainable future for this important natural resource.

This master’s thesis explores Maine’s urchin fishery as a complex and coupled social-ecological system (SES) and documents harvester and scientist …

Modeling Of A Head - Neck Assembly Drop Tower Impact Test Using Abaqus, Hussein Sharqi Owaid

Electronic Theses and Dissertations

There are numerous potential causes of traumatic brain injury (TBI) and concussions, including traffic accidents, contact during sports and falls. Protection from these injuries is paramount because of the problems that result from TBI, such as loss of thinking and memory capability. Head impact from falls, especially in elderly, can also result in severe to fatal injury and some effects of brain injury are often not visible. For these reasons and more a need exists for protective head gear that can keep persons safe during at risk physical activity and that can protect fall prone persons from accidental injuries. Part …

Play The Game, Don't Let It Play You: A Case Study Of African American Male Student-Athletes' Experiences At A Division Ii Historically Black College, Eric A. Bailey Ii

Electronic Theses and Dissertations

The media's overrepresentation of Black men in entertainment often portrays that the only Black males who are successful are those who are either professional athletes or entertainers. Therefore, at an early age, many Black boys aspire to capitalize on what society speculates to be their best attributes--physical ability. African American male athletes spend countless hours practicing, exerting a great deal of energy, and enduring physical pain and injuries while competing, all for the slim hope of securing a roster spot on a professional sports team. While college is intended to be a place to acquire the necessary skills or credentials …

Estimating Density And Residency Of Bottlenose Dolphins (Tursiops Truncatus) In Three Estuarine Sites In South Carolina, Jessica Nicole Conway

Electronic Theses and Dissertations

Of the three estuarine bottlenose dolphin stocks in South Carolina, two are considered data insufficient, with no minimum population estimate or assigned potential biological removal value. Additionally, the Northern Georgia Southern South Carolina Estuarine System (NGSSCES) stock’s boundaries are based on sighting data that do not extend to the full area encompassed by the boundary lines. In areas where stock boundaries are not clearly defined and data is insufficient for traditional methods of estimating abundance, density may provide insight into local distributions and serve as a proxy for actual abundance. Photo-identification surveys were conducted in three sites, representative of the …

Habitat Use Of Blacktip Sharks (Carcharhinus Limbatus) At Fishing Piers, Kelsey L. Spencer

Electronic Theses and Dissertations

Blacktip sharks (Carcharhinus limbatus) can be observed near fishing piers throughout the summer along the northeast coast of South Carolina. These piers attract and support a wide variety of potential prey and sharks are able to forage on fishers’ discards with minimal energetic cost. I tagged 12 blacktip sharks with acoustic transmitters, monitored piers with acoustic receivers, and conducted pier-creel surveys to determine the habitat use of blacktip sharks at fishing piers, factors that influenced residence time and presence/absence at piers, and any cyclical patterns in visits to piers. Data were analyzed with pier association indices (PAI), mixed models, and …

An Analysis Of The Perceptions Of Quality Professional Development And Its Relationship To Teacher Turnover, Job Satisfaction, And School Performance, Cammesha Rana Sims

Electronic Theses and Dissertations

The purpose of this study was to explore the relationship between educators' perceptions of the quality of Professional Development to which they have been exposed and the three outcomes related to school productivity, specifically teacher retention, job satisfaction, and student proficiency in basic skills. For that purpose, secondary data extracted from the 2013 administration of the Teaching, Empowering, Leading, and Learning Questionairre (TELL) were merged with pertinent school demographic information archived on the Tennessee Department of Education (TDOE) website.The results of the Hierarchial Multiple Regression indicated that the teacher- perceived quality of Professional Development appeared to make a substantial contribution …

Cellulose Nanofiber-Reinforced Impact Modified Polypropylene: Assessing Material Properties From Fused Layer Modeling And Injection Molding Processing, Jordan Elliott Sanders

Electronic Theses and Dissertations

The purpose of this research was to investigate the use of cellulose nanofibers (CNF) compounded into an impact modified polypropylene (IMPP) matrix. A IMPP was used because it shrinks less than a PP homopolymer during FLM processing. An assessment of material properties from fused layer modeling (FLM), an additive manufacturing (AM) method, and injection molding (IM) was conducted. Results showed that material property measurements in neat PP were statistically similar between IM and FLM for density, strain at yield and flexural stiffness. Additionally, PP plus the coupling agent maleic anhydride (MA) showed statistically similar results in comparison of IM and …

The Effects Of Metabolic Formula On Growth Outcomes In Patients With Inborn Errors Of Protein Metabolism, Emily Ann West

Electronic Theses and Dissertations

Background: Inborn errors of protein metabolism (IEPM) cause the build-up of certain amino acid by products in the body. The treatment for IEPMs is a metabolic formula that eliminates the amino acid that the person with the IEPM cannot metabolize. The purpose of this study was to determine if patients with an IEPM consuming metabolic formula were taller than healthy individuals. Methods: Analysis of height, weight, calories, protein, iron, and vitamin B12 were compared to height using a regression correlation. Proper growth was determined if the height-for-age curve was greater than the 50th percentile. Results: The mean height percentile was …

An Iconographic Analysis Of Mississippian Kneeling Effigy Figures From The Central Mississippi Valley, Amanda Pesce

Electronic Theses and Dissertations

No abstract provided.

Scaling Up With Radically Embodied Cognition, Benjamin Aguda

Electronic Theses and Dissertations

Radically embodied cognitive science (REC) is typically concerned with basic cognition such as perception and action. However, complex cognition or higher-order cognition is difficult to explain for REC, as these theories eschew traditional representational explanations. This leaves REC with a scaling-up problem. In this dissertation I will explore options for REC to fix its scaling-up problem. I am specifically interested in autonoetic cognition, which is the ability to remember and imagine objects and events in the way they would be experienced if they were immediately present to be perceived. I contend that a simulationist account provides many of th necessary …

Establishing Cognitive Predictor Thresholds For Proficiency In Reading And Mathematics: Analysis Of The Woodcock-Johnson Iv Developmental-Age Norming Sample, Philip A. Norfolk

Electronic Theses and Dissertations

Assessment of specific learning disabilities (SLD) in educational settings is one important function of a school psychologist. The federal definition of SLD describes"underlying cognitive processing deficits" as part of the assessment criteria, that is also incorporated into several states' SLD eligibility criteria, that is difficult to directly evaluate using traditional assessment methods. Traditionally, use of norm-referenced scores have been used to compare an examinee's relative performance on assessment tests. Such a method does not provide direct evidence of underlying cognitive processing deficits associated with poor academic achievement. In an effort to directly inform this cognitive processing ability and academic proficiency …

Long-Term Neurocognitive, Behavior And Emotional Outcomes In Survivors Of Childhood Acute Lymphoblastic Leukemia Treated With Chemotherapy Only, Wei Liu

Electronic Theses and Dissertations

Contemporary chemotherapy results in a greater than 90% five-year survival rate from childhood acute lymphoblastic leukemia (ALL). However, long-term survivors of childhood ALL still present with a higher prevalence of neurocognitive function problems, specifically executive function deficits, and behavior emotional problems compared to the general population. We conducted two epidemiologic studies of these issues and a Phase II clinical trial to improve executive deficits among long-term childhood ALL survivors. First, we evaluated the association between sustained attention and parent-rated behavioral inattention at the end of chemotherapy, and neurocognitive outcomes at long-term follow-up (LTFU). Patients demonstrated higher frequency of impairment in …

Rodion Shchedrin's Five Concertos For Orchestra: Expressing Ensemble Virtuosity, Nadezda Potemkina

Electronic Theses and Dissertations

This dissertation introduces the work of Russian composer Rodion Shchedrin (b. 1932), and examines his approach to the genre of concerto for orchestra. Chapter one provides a brief survey of the current state of research on concertos for orchestra, as well as the composer's biography, and an overview of his compositional style. Chapter two focuses on the 1960s, the period when the first two concertos were written. It begins with an outline of the cultural and political climate that might have influenced the two pieces, and proceeds with the analysis of the Concerto for Orcehstra no. 1, the most popular …

From Here I Saw What Happened And I Cried: Carrie Mae Weems And Critiquing Institutional Histories, Katherine Layne Kizer

Electronic Theses and Dissertations

While scholarship on Carrie Mae Weems's series titled From Here I Saw What Happened and I Cried often reflects the significance of the work as it relates to the African American experience and the African diaspora, critical discussion downplays the relationship the installation has to institutional critique and social practice. Through the course of this paper, I present extensive research on Weems's series. In order to conduct my investigation, I look to the genesis of the series in 1995 as a response piece to Hidden Witness. I then consider Weems's methodology and the way in which she appropriates historic photographs …