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Articles 451 - 469 of 469
Full-Text Articles in Entire DC Network
Silence No More: A Transformative Transcendental Phenomenological Study Investigating The Experiences Of Teen Mothers Who Go To College In The Rural Southeast, Angela Rogers
All Dissertations
According to ethnographer Kristin Luker (1996) 'most poignantly, in the vast majority of cases, giving birth while still a teenager is a pledge of hope, an acted-out wish that the lives of the next generation will be better than those of the current generation, that this young mother can give her child something that she never had.' Unfortunately, teen pregnancy prevention rhetoric, which often perpetuates the negative socially constructed image of teenage mothers, frequently focuses on the economic costs that teen pregnancy is reported to have. Not enough research has been devoted to the individual experiences of teen mothers, in …
A Historical Analysis Of Property Reform Act Of 2006, David Pitts
A Historical Analysis Of Property Reform Act Of 2006, David Pitts
All Dissertations
The South Carolina Property Tax Reform Bill was signed into law in June 2006 creating a new way of generating money for public education in South Carolina. The Property Tax Reform Act eliminated 100% of the fair market value of 4% owner-occupied property for the purposes of taxation for school operations. Additionally, the Act increased the sales tax by 1% on most goods. Further, the Act limited a local school district's ability to raise additional revenue.
The following qualitative study used historical research design with an emphasis on oral history. The researcher used the wealth neutrality theory for the theoretical …
Acculturation, Alienation, And Hiv Risk Among The Russian-Speaking Drug Users In Estonia, Anna Skosireva
Acculturation, Alienation, And Hiv Risk Among The Russian-Speaking Drug Users In Estonia, Anna Skosireva
All Dissertations
In 1991, dramatic socio-political changes transformed the Russian-speaking population in Estonia from the governing class to an immigrant minority virtually overnight absent of a relocation or emigration process. New citizenship and language policies, and associated socioeconomic hardships, drove many of the Russian-speaking population to the edges of the society. These processes were amplified by traditional acculturation challenges that led to increased psychological distress, rising indicators of social exclusion and social alienation, and poor health, including HIV/AIDS and substance abuse, in this linguistic group during the past two decades. Given the growing relevance of cultural issues in this group as well …
The Accuracy Of Observers' Estimates Of The Effect Of Glare On Nighttime Vision: Do We Exaggerate The Disabling Effects Of Glare?, Stacy Balk
All Dissertations
Designing headlights involves balancing two conflicting goals: maximizing visibility for the driver and minimizing the disabling effects of glare for other drivers. Complaints of headlight glare have increased recently. This project explored the relationship between subjective (discomfort and expected visual problems) and objective (actual visual problems) consequences of glare. Two experiments - a lab-based psychophysical study and a field study - quantified the accuracy of observers' estimates of the effects of glare on their acuity. In both experiments, participants over-estimated the extent to which glare degraded their ability to see a small high contrast target. Observers' estimates of the disabling …
A Solution-Based Approach To The Fabrication Of Novel Chalcogenide Glass Materials And Structures, Nathan Carlie
A Solution-Based Approach To The Fabrication Of Novel Chalcogenide Glass Materials And Structures, Nathan Carlie
All Dissertations
Chalcogenide glasses (ChGs) are well known for their large optical nonlinearities and high infrared transparency, and are candidate materials for next-generation thin film-based planar infrared (IR) optical applications. They are also known, however, to possess low thermal and mechanical stability as compared to oxide glasses. Traditional physical vapor deposition (PVD) methods used for the deposition of these materials as thin films often suffer from low deposition rates, deviation from stoichiometry, and cannot coat over complex surfaces. In order to retain the attractive optical properties of ChGs while enabling new fabrication routes and hybrid and composite material systems, we have developed …
The Development Of A Mesenchymal Stem Cell Based Biphasic Osteochondral Tissue Engineered Construct, Scott Maxson
The Development Of A Mesenchymal Stem Cell Based Biphasic Osteochondral Tissue Engineered Construct, Scott Maxson
All Dissertations
The ability of human articular cartilage to respond to injury is poor. Once cartilage damage has occurred, an irreversible degenerative process can occur and will often lead to osteoarthritis (OA). An estimated 26.9 million of U.S. adults are affected by OA. Osteochondral grafting is currently used to treat OA and osteochondral defects; however, complications can develop at the donor site and defect area. Osteochondral tissue engineering provides a potential treatment option and alternative to osteochondral grafting. The long term goal of this work is to develop a tissue engineered mesenchymal stem cell (MSC) based osteochondral construct to repair cartilage damage. …
Carnosine Content And Antioxidant Activity From Poultry Co-Products, Protein Meal And Stressed Poultry Tissues, Paljinder Manhiani
Carnosine Content And Antioxidant Activity From Poultry Co-Products, Protein Meal And Stressed Poultry Tissues, Paljinder Manhiani
All Dissertations
Four separate studies were conducted to examine carnosine levels and associated antioxidant activity in poultry co-products, in rendered poultry protein meal, in tissues from stressed or non-stressed chickens. In the first study, carnosine was extracted from poultry co-products (head, liver, lungs, tail, gizzard, brain and heart). Liver contained the highest (102.29 mg/gm) level, while brain contained the lowest level of carnosine (0.95 mg/gm). Except brain, all tissue ultrafiltrates (20.87-39.57%) and reconstituted dry powders (5.66- 14.47%) showed thiobarbituric reactive acid species (TBARS) inhibition. Head ultrafiltrate and reconstituted dry powder showed maximum while gizzard showed the minimum metal chelating activity. Free radical …
Molecular Mechanics Studies Of Enzyme Evolutionary Mechanisms, Manoj Singh
Molecular Mechanics Studies Of Enzyme Evolutionary Mechanisms, Manoj Singh
All Dissertations
In the current dissertation, closely related studies to quantify the mechanism underlying enzyme evolution have been discussed. The HIV-1 protease and beta-lactamase enzymes were used as model systems for these studies. These are well known enzymes that are associated with drug resistance and are associated with the pathogenic diseases, and therefore, developing molecular level understanding of drug resistance through these enzymes has fundamental as well as practical importance.
In chapter 2, the relationship between errors in modeled protein structures and associated binding affinity predictions to small molecules is established. The results of this study are applicable in addressing a wide …
The Relationship Between Energy Balance Understanding And Measures Of Wellness, Stephanie Fishel-Brown
The Relationship Between Energy Balance Understanding And Measures Of Wellness, Stephanie Fishel-Brown
All Dissertations
Much emphasis on the fight against obesity is placed on education and food labeling, yet very little research has been performed to measure how much people know about energy balance and the relationship of this knowledge to measures of wellness. The primary objective of this study was to determine if college students' (N = 262) performance on an energy balance questionnaire is associated with measures of wellness. Performance on the questionnaire as a whole was not significantly correlated (p > .05) with body mass index (BMI; rs = .04), percent body fat (rs = .05), waist to hip ratio …
Influence Of Shear Key Performance On The Fatigue Life Of Adjacent Beam Bridges, Sara Roberts
Influence Of Shear Key Performance On The Fatigue Life Of Adjacent Beam Bridges, Sara Roberts
All Theses
Adjacent beam bridges, such as box beams and hollow core bridges have been one of the most popular forms of precast prestressed bridges in the past. Recently, an awareness of major durability problems has led owners to make improvements to the old standards or move away from the system completely. These issues usually stem from the breakdown of the shear key which provides continuity between adjacent members. This research focuses on determining the best improvements that will reduce durability issues and increase the bridge's service life.
A review of previous research performed on adjacent beam bridges is performed, focusing on …
Unrooted Stem Cutting Physiology; Water Use And Leaf Gas Exchange Of Severed Stem Cuttings, Peter Alem
Unrooted Stem Cutting Physiology; Water Use And Leaf Gas Exchange Of Severed Stem Cuttings, Peter Alem
All Theses
Stem cuttings are one of the most frequently used and successful methods of vegetative plant propagation. The understanding of unrooted cutting physiology, especially gas exchange and water flux, is crucial for successful propagation of healthy plants. Prior to root initiation, water uptake is limited and leafy stem cuttings are most vulnerable to wilting.
Experiments were carried out in the greenhouse with poinsettia cuttings to determine water uptake, photosynthesis, transpiration and stomatal conductance from the time of severing to rooting, including time spent in storage. Water uptake through the severed stem was investigated in the laboratory and growth chamber. Cutting gas …
Camp Bugaboo: A Creative Thesis, Brittany Cuenin
Camp Bugaboo: A Creative Thesis, Brittany Cuenin
All Theses
This creative thesis explores the genre of children's literature though a short novella. There are twenty one chapters consisting of a character arc, conflict, and resolution. The novella reflects the author's command of narrator, plot, characterization, and other important elements of fiction, as well as essential elements of children's literature. This work is submitted to show the author's proficiency in fiction and children's literature.
The Characterization Of Leadership Within Undergraduate Engineering Design Teams Through Case Study Analysis, Gary Palmer Ii
The Characterization Of Leadership Within Undergraduate Engineering Design Teams Through Case Study Analysis, Gary Palmer Ii
All Theses
The purpose of this research is to clearly define leadership that exists within engineering project teams. Leadership can be applicable to any field of study and is heavily researched in business management. Sources which review leadership classify this topic in reference to managerial styles, leadership types and styles, emotional intelligence, and work climate. However, there are few sources which define leadership specifically within engineering environments. The motivation of this research is driven by the absence of defining and observing consistency in engineering leadership through the research‟s experience in engineering teams. Existing leadership is defined in this research through conducting two …
Eastern Martial Arts And The Cultivation Of Persuasive Power, Kevin Cantey
Eastern Martial Arts And The Cultivation Of Persuasive Power, Kevin Cantey
All Theses
Martial arts, which incorporate Eastern philosophical and cultural perspectives, enhance rhetorical skill along with self-defense mastery. Furthermore, Western styled rhetorical movements within workplaces can benefit from the integration of Eastern self-cultivation approaches, specifically Taoism and Zen. Eastern martial arts training grounded in Zen and Taoist precepts, such as the interdependence of seeming opposites, the persuasive power of restraint and humility, and the benefit of applying pathos as a primary rhetorical movement, increases self-knowledge. Through dedicated practice grounded in mutual respect and an openness to challenge physical and mental limitations, the life artist emerges by simultaneously obtaining self-defense ability and virtuous …
The Process Of Outreach To Under-Served Communities By National Park Service Employees, Emily Zivot
The Process Of Outreach To Under-Served Communities By National Park Service Employees, Emily Zivot
All Theses
The National Park Service (NPS) has recognized a need to conduct outreach to people from communities that it recognizes as underserved. This paper offers an examination of outreach programs that were included in a 'best practices' database by the NPS. Primary data for this study came from interviews, recorded and transcribed, with two groups of experts: NPS employees who developed or conducted outreach programs and senior managers in the NPS. Unlike traditional park programming, outreach programs are designed with non-visitors in mind. Outreach programs are supported by different rationales, have different goals, employ different methods, and offer different challenges than …
A Survey Of The Vascular Flora Of Beaufort County, South Carolina, Daniel Payne
A Survey Of The Vascular Flora Of Beaufort County, South Carolina, Daniel Payne
All Theses
Beaufort County has historically been one of the most poorly botanized counties in the state. Geographically, it lies farther from the major research institutions than most other counties and has therefore received little attention from modern botanists. Major waterways, numerous private communities and an oppressive summer climate further complicate botanical research. Beaufort has one of the fastest growing human populations in the state. Natural areas are rapidly being converted into residential and commercial developments. An understanding of the county's flora is necessary to focus conservation efforts to preserve critical habitat and develop management plans for maintaining biodiversity. This project was …
Investigation Of The Thermoelectric Behavior Of Cu-Doped Pbteagxse, Ben Ma
Investigation Of The Thermoelectric Behavior Of Cu-Doped Pbteagxse, Ben Ma
All Theses
Sustainable energy research is currently on the forefront of scientific exploration thus a major effort is devoted to the development of new energy conservation and production techniques. Thermoelectric materials can play a significant part both in energy conservation and energy production via the Seebeck effect (heat to electric power) and the Peltier effect (electricity to cooling power), since they can convert wasted heat to useful electrical energy.
Presented herein are the measured electrical and thermal transport properties and phenomenal analysis of the PbTeAgxSe (x=1.9, 2.0, 2.01) system. First, it would lead to a significant reduction in the thermal conductivity and …
Effects Of Peer-Mediated Vocabulary Intervention On Science Achievement Of Seventh Grade Students With And Without Learning Disabilities, Julie Green
All Dissertations
Vocabulary knowledge is critical for accessing content-area information for students with learning disabilities who receive instruction in general education content-area classes. Therefore, the purpose of this study was to examine the effects of a peer-mediated science vocabulary intervention in general education classrooms on academic achievement of seventh-grade students with and without learning disabilities. A quasi-experimental design with multiple pre- and posttest measures was used to determine the effects of the intervention and whether the intervention was differentially effective for students with learning disabilities compared to their nondisabled peers. The study included 8 teacher participants and 675 student participants in 41 …
Production And Characterization Of Novel Air Filtration Media, Elizabeth Skomra
Production And Characterization Of Novel Air Filtration Media, Elizabeth Skomra
All Dissertations
HEPA and ULPA filtration systems have proven to be an advantageous instrument in removing common contaminants from the air. However, an increased pressure drop due to the build-up of particulates on the filters results in its inevitable decrease in performance. Improving current filtration systems would include increasing collection efficiency all the while either maintaining or reducing the differential pressure drop in order to extend the life of the filter. One method of improving collection efficiency would be viable by increasing the amount of surface area within the filter media by glass fibers because of their inherent quality of being smaller …