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Preventative Behavioral Parent Training In A Primary Care Context: Initial Evaluation Of A Universal Prevention Program For Disruptive Behavior Disorders, Jessica L. Malmberg

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

One of the biggest challenges parents face is effectively managing their child’s engagement in various disruptive behaviors including noncompliance, tantrums, and aggression. Typically when children begin exhibiting disruptive behaviors, parents will express their concerns to their pediatricians; however, there are significant barriers to parents gaining adequate guidance due to clinic time constraints, insurance reimbursement issues, and the limited training pediatricians receive in addressing these concerns. As such, children are generally referred to outside mental health clinics where additional barriers arise including waitlist delays and mental health stigmatization. The treatment for conduct problems (CP) that has proven most effective is referred …

Characteristics Of 4-H Participants And Their Psychosocial Development, Lauralee Lyons

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Volunteerism is an important component in the 4-H program. It was initially used as a method to help agents reach the many youth interested in participating in 4-H. Community service has since become a required component for every club project. Research shows that volunteering can impact youth in many different ways. Other research shows that 4-H youth are more likely to contribute or do some type of community service.

The present study uses the Modified Extended Version of the Object Measure of Ego Identity Status (EOMEIS), the Cognitive Autonomy and Self-Evaluation (CASE) inventory, and an instrument specifically designed to study …

Conservation Genetics And Population Status Of The Flame Chub, Hemitremia Flammea, Kathlina Frances Alford

Masters Theses and Doctoral Dissertations

The southeastern United States has a rich geologic history that contributed to the evolution of an extremely diverse aquatic fauna throughout the region. The Flame Chub, Hemitremia flammea, is a brightly colored, spring endemic minnow species native to the Cumberland, Tennessee, and Coosa river drainages. In this study, the cytochrome-b gene region was analyzed for 230 individuals from 29 populations across the three drainages. Results from maximum parsimony and Bayesian analyses recovered shallow divergence between the 31 haplotypes. AMOVA analyses indicated that most gene tic variation distributed within and between populations, not between drainages. Based on these results, this species …

Toward A Global Organizational Public Sphere: Non-Governmental Organizing And Democratic Legitimacy In A Postmodern World, Rachel Stohr

Department of Communication Studies: Dissertations, Theses, and Student Research

This dissertation refigures Jürgen Habermas’s public sphere theory for the contemporary world in which organizations are key actors. I develop a concept of the “global organizational public sphere” to explore the role of non-governmental organizations (NGOs) in narrowing the democratic legitimacy gap currently prevailing in the international arena. A case study of the NGO, the Women’s Environment and Development Organization (WEDO), gauges the extent to which WEDO (and, by extension, NGOs) serves as a global intermediary that performs the double task of translating needs from the grassroots to global institutions and adapting international policies to local communities. Three problematics structure …

Assessment Of Competence For Caesarean Section With Global Rating Scale, Rahat Najam Qureshi, Syeda Kauser Ali

Department for Educational Development

Objective: To establish as reliable and valid the nine-point global rating scale for assessing residents\' independent performance of Caesarean Section.

Methods: The validation study was conducted at the Department of Obstetrics and Gynaecology, Aga Khan University Hospital, from April to December 2008, and comprised 15 residents during 40 Caesarean Sections over 9 months. Independently two evaluators rated each procedure and the difficulty of each case.

Results: The observations per faculty ranged from 1-8 (mean 4.07± 2.56). The Year 4 residents were observed the most i.e. 32 (40%), followed by Year 3, 30 (37.5%); Year 2; 14 (17.5%); and Year 1, …

Design Thinkers Can Save The World: How Understanding Their Interests, Goals, And Motivations Can Inform Engineering Educators, Jacqualyn Blizzard

All Dissertations

The need for more engineers equipped with new skill sets is essential for ensuring our national security, climate sustainability, and maintaining our position as a global leader in innovation and as an economic world power. The design challenges engineers face increasingly require a human-centered, creative, practical, and systems-based approach to find the most elegant solutions; i.e. they require design thinkers. According to Tim Brown of IDEO, the characteristics that distinguish design thinkers include: 'empathy--they imagine the world from multiple perspectives, integrative thinking--they can analyze at a detailed and holistic level to develop novel solutions, optimism--they don't back down from challenging …

Role Of Phosphoinositide-Based Signaling In Virulence In Entamoeba Histolytica, Amrita Koushik

All Dissertations

Entamoeba histolytica is an intestinal protozoan parasite and is the causative agent of amoebiasis. Upon entering the human host, cellular processes such as adhesion, phagocytosis, motility and secretion play a vital role in its propagation and pathogenicity. In other systems, each of these cellular processes is preceded by activation of signal transduction pathways, which often involve membrane phosphoinositides such as phosphatidylinositol 4,5-bisphosphate (PI(4,5)P₂). Little is known about phosphoinositide signaling in E. histolytica pathogenicity. In this study, we demonstrated that PI(4,5)P₂ is localized to cholesterol-rich microdomains, lipid rafts, of the E. histolytica membrane and to the trailing edge …

Gesture-Based Robot Path Shaping, Paul Yanik

All Dissertations

For many individuals, aging is frequently associated with diminished mobility and dexterity. Such decreases may be accompanied by a loss of independence, increased burden to caregivers, or institutionalization. It is foreseen that the ability to retain independence and quality of life as one ages will increasingly depend on environmental sensing and robotics which facilitate aging in place. The development of ubiquitous sensing strategies in the home underpins the promise of adaptive services, assistive robotics, and architectural design which would support a person's ability to live independently as they age. Instrumentation (sensors and processing) which is capable of recognizing the actions …

A Novel Hybrid Hydrogel For Scaffold-Mediated Gene Delivery, Jeremy Zhang

All Dissertations

Scaffold-mediated nonviral gene delivery avoids several drawbacks of systemic injection such as clearance by the reticulo-endothelial system and serum aggregation. Existing synthetic and natural polymers used in gene delivery scaffolds are primarily derived from other tissue engineering applications with design parameters focused on the physicochemical properties of the scaffold and its biocompatibility. Common synthetic materials used in polymeric scaffolds such as PEG are practically bio-inert with minimal cell and protein interaction. Therefore, an opportunity exists for the rational design novel gene delivery scaffolds with components capable of increasing the expression of incorporated transgene by including scaffold components that interact with …

Behavior And Control Of The Bed Bug, Cimex Lectularius L. (Hemiptera: Cimicidae), Margaret Lehnert

All Dissertations

The recent resurgence of bed bugs has led to an explosion of bed bug research influenced by the applied needs of pest management professionals. I assessed the needs of pest management professionals who deal with bed bugs in South Carolina. Bed bugs were reported in 28 of 46 counties in South Carolina. Previous samples of bed bug populations have displayed a 1:1 sex-ratio suggesting females do not use aggregations and harborages to hide from males and traumatic insemination, which can be harmful to females. Aggregations are biased in composition, suggesting that females are able to hide from males within harborages. …

Antibacterial Effects Of Proteases On Different Strains Of Escherichia Coli And Listeria Monocytogenes, Hanan Eshamah

All Dissertations

Escherichia coli O157:H7 and Listeria monocytogenes are pathogens that have received special attention by federal agencies, food safety researchers and food industries due to their economic and human health impact. To reduce the presence of these pathogens, alternative interventions have been studied. However, increasing consumer's demand for natural ingredients has made the investigations of effectiveness of natural antimicrobials necessary. In this study, in vitro antimicrobial activity of bromelain and papain against E. coli JM109 and L. monocytogenes was investigated. Furthermore, actinidin and papain were evaluated to reduce populations of L. monocytogenes strain and three mixed strains of E. coli O157:H7 …

Advanced Biomaterials From Renewable Resources: An Investigation On Cellulose Nanocrystal Composites And Co2 Extraction Of Rendered Materials, Jose Orellana

All Dissertations

The annual global consumption of petroleum-based plastics is approximately 280 million tons and is impacting the sustainability of our planet and prosperity of future generations. One solution is the development of bio-based polymer materials with advanced properties for commercial applications. Therefore, the ultimate goal of this dissertation is to investigate the properties of new bio-based materials for broader applications. This dissertation includes two research areas: cellulose nanocomposites, and CO₂ extractions of rendered fat. In the first half, cellulose nanocrystals (CNCs), which exhibit excellent mechanical and optical properties, were investigated for the reinforcement of a biodegradable polymer. The properties of …

Spatial Control Of Magnetic Nanoparticles Integrated With Cellular Spheroids As Tissue Engineered Building Blocks, Brandon Mattix

All Dissertations

Magnetic nanoparticles (MNPs) have been investigated in tissue engineering applications to provide in situ imaging, drug delivery, and tissue patterning, but direct and prolonged interaction between cells and MNPs can have adverse effects on cell function. Therefore, methods which reduce or limit the interaction of MNPs with cells, or utilize more biocompatible MNP-based strategies will improve upon the commonly used iron oxide MNPs. We investigated a variety of methods to improve upon the use of MNPS in tissue engineering.
Cell aggregates, or spheroids, have been used as tissue engineered building blocks that can closely mimic the native three-dimensional in vivo …

Cross Cultural Relationships Of Depression, Attachment Styles, And Quality Of Romantic Relationships: Cultural Difference Between Taiwanese/Chinese And American College Students, Yi-An Lo Burleson

Graduate Theses, Dissertations, and Problem Reports (ETD)

Relationship quality has been determined to be a positive factor in the treatment of depression (Brown, 2000; Fagan, 2009). Although the importance of marriage has been broadly studied, little research has investigated correlations among relationship quality, depressive moods, and attachment styles. Although the prevalence of depressive moods has been documented within populations of Taiwanese/Chinese international students and American college students (Wei et al., 2007), Wang and Mallinckrodt (2006) found that definitions of ideal attachment differ in these groups. Furthermore, researchers have not yet investigated the effect of cultural differences and attachment styles on the interactions between relationship quality and depressive …

Fate And Transport Of Methamphetamine And Related Compounds In Remediated Clandestine Laboratories, Holly A. Mccall

Graduate Theses, Dissertations, and Problem Reports (ETD)

Remediation of clandestine laboratories has become a national concern due to health and environmental concerns. To date, remarkably little has been published regarding the fate and transport of methamphetamine in clandestine laboratories, both before and after remediation. The fate and transport of methamphetamine in an indoor air environment is an inherently complex process, where the drug can move as either particulate matter or vapor. The ability to diffuse throughout a building structure increases the need for analysis techniques that can evaluate potential exposure by various means. This research investigated three analytical methods for the detection of methamphetamine: ion mobility spectrometry …

Mast Cell-T Cell Interactions In Inflammatory Chemokine Mediated Immune Surveillance Of Intestinal Cancer., Sobha R. Bodduluri

Electronic Theses and Dissertations

Chronic inflammation promotes a variety of cancers but inflammation also plays an important role in immune surveillance of cancer. Chemokine decoy receptor, D6 scavenges large number of inflammatory chemokines without transducing any signals and thus presumably dampens inflammation. Consistent with this notion, the D6 deficient mice displayed enhanced inflammation in variety of disease models. However, our laboratory observed that absence of D6 caused an unexpected decrease in inflammation and reduced tumor burden in the ApcMin/+ mouse model of intestinal cancer. Intestinal tumors in D6-/-ApcMin/+ mice showed increased mast cell infiltration but their contribution to tumor progression is unknown. Therefore, unravelling …

Recovery And Biogeography Of Pseudomonas And Burkholderia Species From The Human Home., Megan E. Purdy

Electronic Theses and Dissertations

15 households in the Louisville Metro area were sampled, 7 had a patient with cystic fibrosis (CF), and 8 did not. Houses were sampled between 3 and 8 times each, and samples were collected from 123 different sites within and around the homes. These sites were categorized into the variable environment type based on ecological similarity of sites. Between 75 and 168 samples were collected from each home per visit. Recovery was examined for biogeographical patterns by environment type and season at multiple taxonomic levels. Approximately 10% of samples taken yielded Pseudomonas, and of these 61% were P. putida group, …

Ventricular Assist Device And Extracellular Matrix Combination Therapy In A Chronic Ischemic Heart Failure Bovine Model., Erin F. Smith

Electronic Theses and Dissertations

Purpose: Currently, heart transplantation and mechanical circulatory support (MCS) are the preferred treatments for end stage heart failure. However, these therapies are associated with a shortage of donor organs, a 5-yr survival rate of 80%, and adverse events associated with long-term MCS usage. To overcome these limitations, new clinical paradigm is proposed using a combination therapy of MCS and extracellular matrix (ECM) injection therapy to promote myocardial recovery. Methods: The experimental design consisted of a control (no therapy, n=10) and 3 test groups: (1) ECM only (n=2); (2) MSC (HVAD) only (n=2); and (3) HVAD + ECM (n=2) in a …

Two Studies On Childhood Obesity: Effect Of Obesity On Academic Achievement And Effect Of Food Store Access On Diet Quality, Gaogao Yu

Graduate Theses and Dissertations

This thesis includes two studies on childhood obesity. This first study investigates whether childhood obesity rates affect their academic achievement scores by using a school-level panel data set on Arkansas 4th and 6th grades. The main results indicate that childhood obesity rates do not significantly affect academic achievement scores. Controls for education inputs such as library volume, educational expenditures per student and teacher salary show consistently significant positive relationship to students' test scores in both whole sample and in subsample analyses by socio-economic and minority status. The second study examines the effect of a neighborhood food environment feature, specifically food …

Structure-Function Relationship Of The Ligand-Binding Domain Of The Fibroblast Growth Factor Receptor, Ryan Thurman

Graduate Theses and Dissertations

The interactions between FGF and fibroblast growth factor receptors are responsible for the regulation of key cellular processes. FGF is important in both germ cell and embryonic developments. FGF continues to play important roles during adulthood by regulating embryogenesis, cell differentiation, and wound healing (1-7). The regulations of these cellular events are initiated through FGF binding to the fibroblast growth factor receptors. The complex formed by FGF and the receptor involves a key interaction with heparin. Through interactions with heparin, the FGF, FGFR and Heparin form a 2:2:2 complex (8). This complex formation results in autophosphorylation in the tyrosine kinase …

Evaluating Economic And Environmental Impacts Of Changing Herd Sire Genetics On Arkansas Cow-Calf Operations, Daniel Keeton

Graduate Theses and Dissertations

This research looks at impacts of changing sires, and thus bull genetics, on cow-calf operations of varying land and herd sizes in the state of Arkansas. A 2012 Across-Breed EPD table, adjusted to the Angus breed, was used to estimate breed sire effects on birth weight and weaning weight of the herd's offspring (Kuehn and Thallman 2012a). Together with modified animal performance, the use of 2012 and most recent five- and ten- year Arkansas state average prices, allowed the evaluation of changing herd sires by accounting for breed type and hide color differences in prices. Using a spreadsheet tool that …

A Geomechanical Study Of The Mississippian Boone Formation, Karen Nicole Mason Buckland

Graduate Theses and Dissertations

The Boone Formation in northwest Arkansas is a chert-limestone sequence analogous to the subsurface Mississippi Lime reservoir in parts of Oklahoma and Kansas. It has low permeability and produces via horizontal drilling and hydraulic fracturing. The response to stimulation by fracturing is dependent on the quantity of chert in the area. Chert nodules and laterally extensive chert layers in the sequence are variable. Locally, cm- to dm-scale chert bedding is continuous and comprises up to 50% of the outcrop. Elsewhere, the chert is nodular and intermittent.

Samples collected from representative outcrops spanning the thickness and aerial extent of the formation …

Development Of Rapid Detection Methods And Novel Control Measures For Salmonella In Poultry, Si Hong Park

Graduate Theses and Dissertations

This dissertation consists of three research parts: 1) development of rapid detection methods for foodborne pathogens; 2) immune response of chicken cells against Salmonella and bacteriophage P22; 3) evaluation of novel control measures for poultry productions. In order to develop rapid and accurate detection methods for foodborne pathogens, two types of PCR assays were utilized. Three foodborne pathogens included Campylobacter, Escherichia coli and Salmonella in watershed were qualitatively and quantitatively detected by multiplex PCR and qPCR (chapter 2). Since Salmonella species are commonly present in poultry and poultry products as well as most popular foodborne pathogen in …

Essays In Economic Growth And Development, Zhen Zhu

Graduate Theses and Dissertations

This dissertation consists of three chapters exploring the Solow Residual of the Solow growth model. Two central components of the Solow Residual have been studied in my doctoral dissertation. The first is the structural transformation, an internal adjustment process that helps the economy attain the optimal points on its Production Possibility Frontier by reallocating resources from the low-productivity sectors to the high-productivity sectors. The second is the technology diffusion, a positive externality process that pushes forward the economy's Production Possibility Frontier if it adopts the newer technology.

The first chapter of my dissertation is devoted to a case study of …

Characterization Of Host Immune Responses To Eimeria Adenoeides Infection In Turkey Poults, Ujvala Deepthi Gadde

Graduate Theses and Dissertations

Coccidiosis is a common enteric disease of turkeys that is caused by protozoan parasites belonging to the genus Eimeria. There are about seven species of Eimeria that affect turkeys and of these E. adenoeides is the most pathogenic and commonly recognized. Infection with Eimeria is known to induce a long lasting protective immunity in chickens, but nothing is known regarding the acquisition of immunity to Eimeria in turkeys. The experiments reported here were aimed at investigating the biological and cellular immune response to E. adenoeides in turkey poults under different conditions of exposure. In experiment 1 (Chapter II), 20 …

The Use Of Non-Traditional Technologies To Improve The Efficiency And Sustainability Of Modern Poultry Production, Christopher Pixley

Graduate Theses and Dissertations

Historically, major driving factors for the animal agriculture industry have been efficiency and profitability. As demand for efficient food production has increased, the industry has focused research efforts on ways to improve the rearing process. Current market demands are requiring the industry to abandon some of the traditional tools it has used to maximize productivity. However, developing alternative technologies are available which may fill the void. Unfortunately, these alternatives are less well-described and the beneficial impacts they can have are not fully understood. As the animal agriculture industry matures it is becoming evident that consumers will continue to demand methods …

The Children Of Amarna: Disease And Famine In The Time Of Akhenaten, Kathleen Kuckens

Graduate Theses and Dissertations

What is now known as Amarna, Egypt there once stood a grand city. Hastily built and quickly abandoned, this once capital city of Egypt was the brainchild of the Pharaoh Akhenaten. In 2002 the final resting place of the inhabitants who populated this ancient city were discovered. Since excavations began at the South Tombs Cemetery an unusual high number of individuals aged 3-25 have been excavated. Out of the 278 individuals excavated thus far, 45% of them fall to the adolescent and sub-adult category. Under normal circumstances this portion of the population tends to be the most robust and resilient, …

Algae To Propellants: Biosynthesis Of 1,2-Propanediol From Algal Derived Sugars, Lauren Rachelle Merriman

Graduate Theses and Dissertations

Propylene glycol dinitrate (PGDN) is an important component used in the formulation of energetic materials. A renewable, environmentally-friendly and effective production technique for the production of 1,2-propanediol, an important precursor to PGDN, is desired. While fermentation of 1,2-propanediol has been achieved, it suffers from major limitations such as expensive feed sugars and relatively low yields. It is hypothesized that algae sugars could serve as a feedstock for the microbial synthesis of 1,2-propanediol, thereby reducing production costs and enhancing sustainability.

Algal biomass produced from an Algal Turf Scrubber® has proven to have significant potential as a source of fermentable materials. However, …

An Evaluation Of Teaching Methods Based On Cognitive Achievement, Ryan Patrick Siebenmorgen

Graduate Theses and Dissertations

The purpose of this study was to determine if there were any significant differences (p < .05) in cognitive achievement between different instructional techniques on students enrolled in high school agricultural science classes in Northwest Arkansas. Lesson content covered the

production, uses, and performance of biodiesel fuels in compression engines. Treatments were different instructional techniques including lecture, demonstration, and a combination of lecture and demonstration. Cognitive achievement was measured on low level cognition and high level cognition. In addition, this study sought to find any correlation between student perceptions of lecture versus demonstration and tinkering self-efficacy on student achievement.

A true experimental pretest-posttest design (#2) was used to conduct this research (Campbell & Stanley, 1996). The population consisted of all students enrolled in high school …

Relationship Of Childhood Activity To Leisure Time Activities And Recreation Specialization Among College Students, Alexandra Sandoval

Theses

Leisure time and outdoor recreation are participated in during childhood, which allows for children to being able to learn about different recreation activities, whether they may be indoor or outdoor oriented. Children begin to learn about the world around them, having significant life experiences and beginning to understand the concept of recreation specialization. As a child moves into adulthood, specifically as college students, their leisure time activities being to change; this may be due to the fact that their time is limited for both indoor and outdoor recreation, but could also be due to the fact that technological advances have …