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4-H Leaders: Factors That Affect Their Persistence In The 4-H Youth Development Program, Regina Schinker

Dissertations

For over one hundred years, the 4-H youth development program has educated millions of children across the country in a variety of programs; from livestock husbandry to leadership skills. Like all programs that have endured, 4-H has had to adjust its focus as society has changed. One area in the 4-H program that has not changed is the heavy reliance on adult volunteer leaders to deliver the educational programs to 4-H youth. Because of the reliance on volunteer 4-H leaders, 4-H professionals and extension office staff are concerned about issues of retention.

The case study examines two related issues: First, …

Identification And Characterization Of Micrornas In Porcine Gametes And Pre-Implantation Embryos, Erin Curry

All Dissertations

MicroRNAs (miRNAs) are short ribonucleic acids that ultimately affect the production of proteins. Although miRNAs are involved in nearly every biological process examined to date, little is known of the identity or function of miRNA in porcine reproductive tissues or their potential involvement in reproductive processes in pigs or other species. The objective of this dissertation research was to determine the presence of miRNAs in porcine gametes and both in vivo- and in vitro- produced pre-implantation embryos and to identify differences in miRNA expression between normal and aberrant samples. Using a heterologous RT-PCR approach, we demonstrated the presence of a …

Deadly Discourse: Negotiating Bureaucratic Consensus For The Final Solution Through Organizational And Technical Communication, Mark Ward Sr

All Dissertations

The Final Solution was largely accomplished in eleven months; its executors, the Nazi SS, faced the constant problem that as killing and plunder escalated so did internal competition and corruption; and the SS deliberately cultivated an intensely competitive and polycratic organizational culture that fit the Nazi worldview of life-as-struggle. By tying these three observations together—that the Final Solution was punctuated, entropic, and polycratic—the problem arises: How did SS organizational communications manage, just barely long enough, to create a temporary social reality that regulated the internal contradictions of its genocidal project and fragmented bureaucracy? This study contends that through its organizational …

A Study Of African American Forest Landowners In South Carolina: Implications For Land Ethic And Forest Stewardship, Keenan Adams

All Dissertations

African Americans account for a significant proportion of South Carolina`s
population but reportedly own a disproportionally smaller amount of land. Research indicates that landowners who hold significant sources of sustainable wealth and power can dramatically increase their quality of life and ultimately that of their communities. Current land loss trends for African Americans are increasing at an alarming rate, which may have larger social implications for this traditionally underserved population. The remaining African American landowners are a rapidly declining group, due to an assortment of factors (e.g., age, heirs property). Understanding the experiences of the residual African American forest landowners …

A Structural Equation Model Of Leader Attributes In The Principalship, Amy Young

All Dissertations

To become a principal in South Carolina, one must have teaching experience, a master's degree, and certification in the area of primary responsibility. Beyond what is learned through coursework, internships, and certification tests, what intangible factors critically influence a principal's actions and decisions, and (ultimately) success? Trait theory begs the question of whether any of these criteria truly influences the decisions and actions of the principalship. Are there interactive traits of leadership that describe the behaviors of school principals? This study revisits trait theory by examining leader attributes relative to the principalship of South Carolina public schools. This study replicates, …

Novel Vascular Grafts Based On Polyphenol-Stabilized Acellular Tissue Scaffolds, Ting-Hsien Chuang

All Dissertations

The Cardiovascular diseases (CVDs) continue to be the leading cause of morbidity and mortality worldwide. The most common form of CVDs is occlusion of blood flow thus limiting blood supply to specific tissues or organs. Atherosclerosis is a leading cause of coronary heart disease and stroke, which were responsible for more than 25% of deaths in 2004.
The demand for vascular graft is huge. In United States alone, approximately 500,000 coronary artery bypass graft surgeries are performed annually. Synthetic polymers such as Dacron and ePTFE have been successfully applied in large diameter blood vessel prosthesis; however, for small diameter (inner …

Evaluation Of Factors That Modulate Cellular Adipogenesis For Breast Tissue Engineering Strategies, Cheryl Gomillion

All Dissertations

It is estimated that this year more than 200,000 women in the United States will be diagnosed with breast cancer. Treatment for most occurrences of breast cancer will often include surgical removal of the tumorigenic tissue, resulting in a soft tissue defect within the subcutaneous tissue of the skin. Post-surgical reconstruction methods are often sought by patients to restore the aesthetic function of the breast via cellular or non-cellular methods; however, because of complications associated with currently used methods for breast reconstruction, researchers are investigating tissue engineering methods to produce viable autologous adipose tissue for breast reconstruction.
Previous research in …

Development And Characterization Of Novel Sub-Coatings With Polymorphic Brookite Titania Nanoparticles: Enhanced Uv/Vis Photocatalytic Antibacterial And Anticancer Properties, Donna Weinbrenner

All Dissertations

ABSTRACT
Nosocomial and community infections and biofilm formation from bacteria has increased significantly through adaptation combined with overuse of broad spectrum antibiotics. Because the world population continues to escalate, hospitals and long-term managed care will also escalate, thereby increasing transmission of infections, lowering patients' quality of health. Another disease on the rise throughout the world is skin cancer. A treatment modality that would cause less deleterious effects on the patient would be ideal. These two seemingly different issues could be solved with one product. First an inexpensive, safe, and non-selective antimicrobial surface coating would enhance the hospital arena and a …

Sequencing And Functional Analysis Of A Multi-Component Dioxygenase From Pah-Degrading Sphingomonas Paucimobilis Epa505, Renuka Miller

All Dissertations

Polycyclic aromatic hydrocarbons (PAHs) are hydrophobic organic compounds consisting of two or more fused benzene rings. PAHs derive from many different sources including petroleum refining, wood treatment, and coal coking industries. Because of their structural stability and water insolubility, PAHs are extremely resistant to degradation. These compounds are also believed to have mutagenic, carcinogenic, and teratogenic effects. Therefore, there are currently 16 PAH compounds on the EPA's list of priority pollutants.
Many species of bacteria have the ability to breakdown these persistent pollutants. However, bioremediation strategies using these organisms have many unresolved issues. While laboratory experiments can easily demonstrate the …

The Preservation Of Archaeological Records And Photographs, Kelli Bacon

Department of Anthropology: Theses and Student Research

Substantive and organized research about archaeological records and photograph preservation, especially those written by and for archaeologists, are few. Although the Society for American Archaeology has a code of ethics regarding archaeological records preservation, and the federal government has regulations regarding the care and preservation of federally owned archaeological collections, there is a lack of resources. This is detrimental to archaeology because not all archaeologists, given the maturity of the discipline, understand how important it is to preserve archaeological records and photographs. Without documents and photographs from projects, irreplaceable information is lost. This thesis adds to the existing body of …

The Molecular Mechanism Of Viral Transactivator Rta-Mediated Kaposi’S Sarcoma-Associated Herpesvirus (Kshv) Lytic Replication, Hui-Ju Wen

School of Biological Sciences: Dissertations, Theses, and Student Research

Kaposi’s sarcoma-associated herpesvirus (KSHV) is a member of the gamma-herpesvirinae subfamily and displays two distinct life phases, latency and lytic replication. Infection with KSHV mostly results in a latent state. A small population of infected cells can spontaneously undergo lytic phase, which is marked by abundant viral gene expression and production of infectious viral progeny. Lytic replication is important for transmission of KSHV in the population and development of diseases. RTA (replication and transcription activator) is a master regulator of KSHV lytic replication. Expression of RTA alone is sufficient to disrupt KSHV latency and initiate the lytic replication cascade. The …

Microsatellite Development, Population Structure And Demographic Histories For Two Species Of Amazonian Peacock Bass Cichla Temensis And Cichla Monoculus (Perciformes: Cichlidae)., Jason C. Macrander

School of Biological Sciences: Dissertations, Theses, and Student Research

The Neotropics of South America represent one of the most diverse assemblages of freshwater organisms in the world. The geologic and ecological changes that have occurred throughout the Amazon and Orinoco River basins have resulted in the two most diverse rivers in the world producing very heterogeneous environments potentially influencing current population structure of Neotropical species. To investigate specific ecological and geological events influencing populations in these regions, I explore population structure and demographic histories of two species from the genus Cichla with wide distributions among the Amazon and Orinoco. First, I describe the methods used to isolate and characterize …

Religion In The Abortion Discourse In Singapore: A Case Study Of The Relevance Of Religious Arguments In Law-Making In Multi-Religious Democracies, Seow Hon Tan

Research Collection Yong Pung How School Of Law

The article discusses the social issue on religion in the abortion discourse in Singapore. It mentions the relevance of religious arguments in law-making in multi-religious democracies. It notes that laws on abortion vary across different jurisdictions, like prohibiting abortion under all circumstances to freely allowing it without restriction as to reason.

The Wrong Tool For The Job: The Ip Problem With Noncompetition Agreements, Viva R. Moffat

William & Mary Law Review

This Article argues that employee noncompetition agreements ought to be unenforceable. It begins by recognizing that there is momentum for change in the law of noncompetes: a number of states and the American Law Institute (ALI) are in the process of reconsidering noncompete doctrine, and recent empirical studies provide evidence as to the mostly negative effects of the agreements. Existing critiques have focused on the problematic nature of noncompetes within the employment relationship. This Article synthesizes those critiques, adding support from empirical studies, and then examines noncompetes from a new perspective.

Commentators have neither recognized nor evaluated the role noncompetes …

A New Partial Skeleton Of A Cryptocleidoid Plesiosaur From The Upper Jurassic Sundance Formation Of Wyoming, Benjamin C. Wilhelm, F. Robin O’Keefe

Biological Sciences Faculty Research

Cryptocleidoid plesiosaurs from the Upper Jurassic are well known from the Oxford Clay (Callovian) of the United Kingdom. The plesiosaurs of the nearly coeval Sundance Formation (Oxfordian) of North America are poorly known, but are thought to include two cryptocleidoid taxa:Pantosaurus striatus and Tatenectes laramiensis. Here we present two specimens recently recovered from the Bighorn Basin of Wyoming. The first specimen comprises three articulated adult cervical vertebrae and fragments of a fourth. This specimen preserves a posteriorly directed cervical neural spine, a character diagnostic of Pantosaurus striatus. It also resembles Pantosaurus in the morphology of its cervical …

Population Characteristics Of Central Stonerollers In Iowa Streams, Scott M. Bisping, Jesse R. Fischer, Michael C. Quist, Andrew J. Schaefer

The Prairie Naturalist

The central stoneroller (Campostoma anomalum) is a herbivore that can have substantial effects on algal communities, nutrient dynamics, and energy flow in streams. Despite its importance in lotic ecosystems, little is known about its population dynamics in streams of the Great Plains. Our objective was to describe age structure, age-specific mortality, and growth rates of central stonerollers in three Iowa streams. We sampled fish from 41 reaches during June-August 2007. We sampled 466 central stonerollers, of which we aged 192. Fish varied in length from 32 to 130 mm and in age from age 0 to 4 years. …

Resource Selection Of Greater Prairie-Chicken And Sharp-Tailed Grouse Broods In Central South Dakota, Mark A. Norton, Kent C. Jensen, Anthony P. Leif, Thomas R. Kirschenmann, Gregaory A. Wolbrink

The Prairie Naturalist

Habitat use of sympatric greater prairie-chicken (Tympanuchus cupido) and sharp-tailed grouse (T. phasianellus) broods during the brood-rearing season has not been quantified for stable prairie grouse populations in large contiguous grassland landscapes in the Northern Great Plains. Characteristics of habitats used by prairie grouse broods were described based on data collected from 35 broods (18 greater prairie-chicken and 17 sharp-tailed grottse) during the breeding seasons of 2004 and 2005. Greater prairie-chicken and sharp-tailed grouse broods used vegetation with visual obstruction heights 2:26 cm and 37 cm, respectively. Greater prairie-chicken broods selected western wheatgrass (Pascopyrum smithii …

Population And Diet Assessment Of White Bass In Lake Sharpe, South Dakota, Andrew E. Ahrens, Travis W. Schaeffer, Melissa R. Wuellner, David W. Willis

The Prairie Naturalist

White bass (Morone chrysops) have been introduced into all 4 South Dakota Missouri River reservoirs and compose a substantial proportion of the annual recreational harvest. To date, limited studies have examined white bass population dynamics and food habits in South Dakota Missouri River reservoirs. Our objective was to examine population dynamics and food habits of white bass in Lake Sharpe, a South Dakota mainstem Missouri River reservoir. White bass consistently consumed invertebrates during May but switched to a more piscivorous diet later in the growing season; most of the fish consumed were gizzard shad (Dorosoma cepedianum). …

Diets Of Nesting Swainson's Hawks In Relation To Land Cover In Northwestern North Dakota, Robert K. Murphy

The Prairie Naturalist

Relationships between land use practices and types of prey used by Swainson's hawks (Buteo swainsoni) in the Northern Great Plains is of increasing interest as the quantity and quality of habitat in the region declines. I recorded 1,284 prey items at 18 Swainson' s hawk nesting areas throughout northwestern North Dakota during summer 1986-1987. After correcting for detectability biases and food needs of adults, I estimated (90% CI) 2,087-2,859 total prey individuals and 138.3-206.7 kg of prey biomass (x = 69.8 g/item) were consumed by adult and nestling Swainson's hawks during my study. Major prey (>10% overall …

The Effect Of Explicitly Differentiated Reading Instruction Groups On Eighth-Grade Students' Achievement, Behavior, And Engagement In A School Seeking To Reestablish Adequate Yearly Progress Benchmarks, Sean P. Dunphy

Student Work

The purpose of this study was to determine the effect of explicitly differentiated reading instruction groups on eighth-grade students’ achievement, behavior, and engagement in a school seeking to reestablish adequate yearly progress benchmarks. The results of this study supported student participation in explicitly differentiated reading instruction groups. Because students in High Reading Ability (n = 25), Middle Reading Ability (n = 25), and Low Reading Ability (n = 25) groups maintained average to above average achievement test scores on several measures with commensurate classroom grade performance, and appropriate behavior and engagement to support school success during eighth grade, the results …

Banuye Isfahani, Zivar Huseynov

Khazar Journal of Humanities and Social Sciences

No abstract provided.

Neuroeconomics: Constructing Identity, John B. Davis

Economics Faculty Research and Publications

The paper asks whether neuroeconomics will make instrumental use of neuroscience to adjudicate existing disputes in economics or be more seriously transformed by neuroscience in ways that might transform economics. The paper pursues the question by asking how neuroscience constructs an understanding of individuals as whole persons. The body of the paper is devoted to examining two approaches: Don Ross's neurocellular approach to neuroeconomics and Joseph Dumit's cultural anthropological science organization approach. The accounts are used to identify boundaries on single individual explanations. Within that space Andy Clark's external scaffolding view and Nathaniel Wilcox's socially distributed cognition view are employed.

A Study Of The Perceived Effects Of School Culture On Student Behaviors., Linda Cox Story

Electronic Theses and Dissertations

Research has confirmed that the behaviors of human beings are influenced by their social environments. The school is the principal social environment of adolescents; thus, the school environment necessarily influences the behaviors of students to some degree.

This research project used the interview method to focus on perceptions of school personnel with regard to the elements of school culture that may negatively influence students' behaviors both inside and outside the school environment. The primary influences of school culture on students' behaviors were found to be peers, teachers, administrators, and parent involvlement. Governmental regulations, including those resulting from the Individuals with …

Effect Of Stress On Mucin Expression In The Gastrointestinal Tract Of Mice., Bupe Martha Habiyambere

Electronic Theses and Dissertations

This study investigated the effects of chronic stress on mucin expression in the GIT of mice. Sixteen ICR male mice were randomly divided into treated and control animals. Restraint stress was applied to the treated group for 21 days. Body weight (BW) changes and feed consumed (FC) were regularly recorded. After 21 days mice were euthanized and blood, GIT mucosa, and GIT sections were collected. Serum corticosterone levels were determined. The GIT sections were fixed, paraffin embedded, sectioned, and stained with AB-PAS to visualize goblet cells. Mucin expression was determined using qPCR. As expected stressed mice showed higher corticosterone than …

Levo-Tetrahydropalmatine Attenuates Cocaine Self-Administration Under A Progressive-Ratio Schedule And Cocaine Discrimination In Rats, John R. Mantsch, Samantha Wisniewski, Oliver Vranjkovic, Corey Peters, Amanda Becker, Abbey Valentine, Shi-Jiang Li, David A. Baker, Zheng Yang

Biomedical Sciences Faculty Research and Publications

Levo-tetrahydropalmatine (l-THP) is an alkaloid found in many traditional Chinese herbal preparations and has a unique pharmacological profile that includes dopamine receptor antagonism. Previously we demonstrated that l-THP attenuates fixed-ratio (FR) cocaine self-administration (SA) and cocaine-induced reinstatement in rats at doses that do not alter food-reinforced responding. This study examined the effects of l-THP on cocaine and food SA under progressive-ratio (PR) schedules of reinforcement and the discriminative stimulus effects of cocaine. In adult male Sprague–Dawley rats self-administering cocaine (0.5 or 1.0 mg/kg/inf), l-THP significantly reduced breaking points at the 1.875, 3.75 and 7.5 mg/kg …

No-Till Vegetable Production At The Cal Poly Organic Farm, Nathaniel Jay Harkleroad

Master's Theses

Tillage and subsequent bare soil have been linked to erosion, nutrient leaching, reduced biological diversity, loss of organic matter, and release of CO2 into the atmosphere (Brady and Weil, 2004). The usefulness of an organic no-till system for transplanted vegetables was explored over two growing seasons. In 2007-2008, in a randomized complete block design, treatments of tilled and no-till (T and NT, respectively) were seeded to a dense grain and legume winter cover crop. Tilled plots were mown and disk-ploughed two times; NT plots retained a mow-killed mulch on the soil surface. There were less weeds in NT plots. A …

The Development And Validation Of A Finite Element Model Of A Canine Rib For Use With A Bone Remodeling Algorithm., Scott J. Sylliaasen

Master's Theses

Studies are currently being performed to determine the effects of bisphosphonate treatments on the structure and density of bone tissue. One of the pathways for gaining a better understanding of the effects of this and other treatments involves creating a computer simulation. Theory suggests that bone tissue structure and density are directly related to the manner in which the tissue is loaded. Remodeling is the process in which bone tissue is resorbed in areas of low stress distributions, and generated in areas of high stress distributions. Previous studies have utilized numerical methods and finite element methods to predict bone structure …

Assessment Of Morphology And Hemodynamics In Normal And Remodeled Microvasculature With Parameter Sensitivity Analysis, Shilpi Ghosh

Master's Theses

The goal of this study was to compare the morphological and hemodynamic characteristics of normal and remodeled vascular networks in the mouse gracilis muscle. To this end, previously developed models to assess flows and vascular branching were used to assess the normal and remodeled microcirculatory networks. The analysis revealed that the average individual vessel flow rates for vessels of similar caliber and total volumetric flow rates in the networks do not change for vessels of the same caliber after remodeling. Connectivity changes and average diameters primarily change in the larger arterioles after remodeling. A few correlations could be made between …

Disambiguating The Sublime And The Historicity Of The Concept, Vrasidas Karalis

CLCWeb: Comparative Literature and Culture

In his article "Disambiguating the Sublime and the Historicity of the Concept" Vrasidas Karalis explores the notion of sublime or sublimity as the field of colliding signifiers and of experiential frameworks in conflict. Instead of treating the traditional notion as a structural element of style of ideology, he analyses it from the point of its contextual validation and its very historicity: what makes sublimity emerge is the extra-lingual unease, the existential dysphoria of the world outside the text, as refracted through specific works of art. Such dysphoria is expressed through ungrammatical language or/and through the attempt in specific moments in …

The Chi Complex And Ambiguities Of Meeting, Paul Carter

CLCWeb: Comparative Literature and Culture

In his article "The Chi Complex and Ambiguities of Meeting" Paul Carter develops a discussion of interpersonal encounters by mobilizing an apparatus of references, ranging from Jean Genet to Lévinas, Derrida, Bachmann, Merleau-Ponty, and Arendt. The hypothesis is that meeting another person entails and subsumes a non-meeting; a resistance and a refusal. The article pursues the ambiguity at the heart of encountering the other through an investigation of the urban spaces that are allegedly designed to invite and facilitate meetings. The argument put forward is that these spaces are paradoxically designed to avert encounters. This is especially true in the …