Digital Commons Network^™

Analysis And Design Of A Feedback Controlled Adaptive Pneumatic Cast, Susan Renee Mueller

Electronic Theses and Dissertations

A pneumatic system with PID control for an actively controlled cast is designed. The cast is intended to aid healing of diabetic foot ulcers by relieving pressure from the sole of a patient's foot and distributing it to the calf. This is accomplished by a pneumatic system which maintains set pressure in multiple air bladders. The research began by defining an electrical circuit analogous to a single supply subsystem. Tests are performed to determine the coefficients for each component. These coefficients are used in a mathematical model to better understand the response of the system to pressure input. A controller …

Mechanistic Importance Of Redox Potentials And Conformational Flexibility In Electron-Transferring Flavoproteins, Michael Anthony Swanson

Electronic Theses and Dissertations

The mitochondrial matrix flavoproteins electron transfer flavoprotein (ETF) and electron transfer flavoprotein-ubiquinone oxidoreductase (ETF-QO) are responsible for linking fatty acid β-oxidation with the main mitochondrial respiratory chain. Electrons derived from flavoprotein dehydrogenases are transferred sequentially through ETF and ETF-QO to ubiquinone and then into the respiratory chain via complex III. In this study, the effects of changes in ETF-QO redox potentials on its activity and the conformational flexibility of ETF were investigated.

ETF-QO contains one [4Fe-4S]^2+,1+ and one flavin adenine dinucleotide (FAD). In the porcine protein, threonine 367 is hydrogen bonded to N1 and O2 of the flavin ring …

Asset Distribution And Productivity: Best Practices For Developing This Synergistic Relationship, Wendy Lee Willbanks Wiesner

Electronic Theses and Dissertations

Productivity is an essential component of lasting corporate success. It is also a critical ingredient in the recipe for making a vibrant and prosperous community.

Economics recognizes that both capital and labor make contributions to productivity through the functions of investment and production. Enhancements to productivity can be obtained in multiple areas, including technological advancement, corporate expansion, market penetration, and product development. Sustained productivity growth, however, is predicated upon continual process improvement and market innovation.

Identifying precisely "who" and "what" are contributing to productivity is challenging. Because capital and labor interact, it is difficult to determine whether the positive effect …

Predictive Modeling Of Sulfide Removal In Tray Aerators, Jumoke O. Faborode

Electronic Theses and Dissertations

Hydrogen sulfide is commonly found in many Florida potable groundwater supplies. Removing sulfur species, particularly hydrogen sulfide is important because if left untreated, sulfide can impact finished water quality, corrosivity, create undesirable taste and odor, and oxidize to form visible turbidity and color. This document presents the results of a study designed to investigate the removal efficiencies of a variety of tray aerators in Central Florida in order to develop a predictive mathematical model that could be used to determine tray effectiveness for sulfide removal. A literature review was performed that indicated there was limited information regarding the removal of …

System Transformation In The Context Of Building An Integrative System In The Child Welfare System In Allegheny County Through Child And Adolescent Needs And Strengths Assessment, Svetlana Doni

Electronic Theses and Dissertations

In the last decade, the Allegheny County constituents could witness the transformation of a widely criticized system of divided services into a single Department of Human Services. As an attempt to improve service planning DHS moved to a common assessment (CANS Comprehensive) shared across the child-serving offices/systems that would lead to a shared service plan and an overall integrated service delivery process. The primary goal of the CANS is to support communication between systems and, in the end, help the integration process within DHS.

This study describes what CANS is and how it became a central point in Human Services …

The Pathway To Making Change: How Parents Promote Health For Their Overweight Or Obese Child, Jennifer S. Laurent

Electronic Theses and Dissertations

Informed by the grounded theory method, the aim of this study was to discover, explore, and explain how parents promote the health of their overweight or obese child. Implicit within this goal was to discover the worldview of the parents and to understand the context, properties, and dimensions in which this process occurred. Interviews from 17 participants were analyzed using constant comparison and theoretical sampling techniques. The concepts and constructs that emerged from the data analysis depict the basic social process of how parents come to know their child is overweight or obese and how they promote their child's health …

Developing Emotional Security Among Children Who Have Been Adopted, Kate Trujillo

Electronic Theses and Dissertations

This study investigated the development of emotional security among 6-10 year old children who have been adopted by exposing them to an experimental condition during which they could engage with either a live dog or a robotic dog. The live dog was a certified therapy dog; the robotic dog was a FurReal® toy marketed by Hasbro as "Biscuit." Utilizing a mixed-method embedded experimental design, the experimental condition was intentionally structured to promote engagement between the participant and the dog or robot. 43 children who had been adopted from the child welfare system were randomly assigned to one of two groups. …

Assessing Adult Attitudes Toward End-Of-Life Issues And Advanced Directives After Implementing An Educational Intervention In A, Marchina Tolbert-Jones

Electronic Theses and Dissertations

Purpose: There is a lack of discussion regarding end-of-life care planning which results in low advanced directive execution (AD) rates. This can lead to decision making by family, friends, and the health care team on behalf of patients whose end-of-life care wishes are unknown. The purpose of this study was to determine the effectiveness of an educational intervention in the work setting to increase end-of-life discussions and the execution of advanced directives. Methods: A descriptive design was used in an occupational workplace setting at a local bottling company after appropriate IRB approval was obtained. An educational intervention based on the …

Scampering In The City: Examining The Ecological And Social Viability Of Black-Tailed Prairie Dogs (Cynomys Ludovicianus) In Denver, Colorado, Lauren K. Morse

Electronic Theses and Dissertations

The conservation of prairie dogs is highly contested due to the embedded view that they are pests. This research addressed the ecological and social viability of prairie dog colonies in Denver, Colorado. Remote sensing analysis was applied to identify potentially viable areas for urban prairie dog colonies. In order to assess the social viability of urban colonies, knowledge and attitudinal surveys were distributed to residents near existing colonies and residents near potential colonies. Statistical analysis of responses provided insight into relationships between proximity to colonies, ecological knowledge, attitudes towards prairie dogs, demographics, and the presence of educational literature. Results indicated …

Particle Matter Measurements For Inspection/Maintenance Programs, Daniel Joseph Pope

Electronic Theses and Dissertations

Particle emissions from Heavy Duty Diesel Vehicles (HDDVs) are currently measured by opacity or dynamometer gravimetric analysis. The Electronic Tailpipe Particle Sensor (ETaPS) is an inexpensive measurement device purported to give real time response to particle mass and was proposed as a possible addition to Inspection/Maintenance (I/M) programs. There were three goals to this study. The first was to verify ETaPS response to particle mass of HDDV exhaust. Integrated ETaPS signal was plotted against filter weight from dynamometer gravimetric analysis and a correlation was found. The second goal was to find a correlation between ETaPS readings and the Remote Sensing …

Exploration Of The Meaning Of Depression Among Psychologists: A Quantitative And Qualitative Approach, Akira Murata

Electronic Theses and Dissertations

While depression is considered the most common mental illness regardless of age, gender, ethnicity, and socioeconomic status, compared to research on the general population, depression among psychologists has received little attention. However, as they are one of the major mental health care professionals, psychologists' mental health could greatly affect their clients' mental health, which raises competency and ethical concerns regarding their work as clinicians. In order to learn more about depression in this group, questionnaires were mailed to 800 randomly selected psychologists in the state of Colorado to examine the prevalence of depression among psychologists, how they dealt with their …

Acculturation Of Russian Refugee Adolescents: The Life Domain Of Peer Relationships, Andrew A. Morozov

Electronic Theses and Dissertations

The purpose of this qualitative study was to uncover the meaning of acculturation as experienced by the Russian refugee adolescents in the domain of peer relationships. This qualitative study implemented a purposeful sampling strategy. In-depth interviews were conducted with 12 refugee adolescents from Russia (3 ethnic Russians and 9 Meskhetian Turks), male and female, aged 15-18, who resided in Denver, Colorado. Applying Moustakas's (1994) phenomenology method of analysis, 8 main themes emerged. The essence of the phenomenon can be described in terms of the refugee adolescents' need for self-worth and belongingness. Belongingness is understood as identification with and acceptance by …

The Impact Of Self-Efficacy, Commitment, And Coping On Occupational Strain In Non-Managerial, Non-Professional Employees, Susan Leslie Bennett

Electronic Theses and Dissertations

The current study explored the effects of moderators, self-efficacy and commitment, and mediators, problem-focused coping (strategies used when changeable conditions exist, thereby resulting in the employee taking action [Folkman & Lazarus, 1980]) and emotion-focused coping (perception that conditions are not changeable and emotions are regulated in a variety of ways versus taking action [Folkman & Lazarus, 1980]), on predicting psychological and physical occupational strain in non-managerial, non-professional employees. Ninety-three shift workers in a 24/7 call center from one division of a transportation company located in the western United States participated in the study. The first research objective was to examine …

The Implementation Of Restorative Justice In Iceland: A Comparison Of Police- And Expert-Led Conferencing, Hafsteinn Gunnar Hafsteinsson

Electronic Theses and Dissertations

On first of October 2006 the Ministry of Justice in Iceland launch a restorative justice pilot project. Building on the pilot project data, this thesis evaluates the implementation of restorative justice into the criminal justice system in Iceland by asking victims, offenders and other participants in police- and expert-led conferencing to answer questionnaires' relating to these two types of restorative justice practices to crime. The thesis compares its results with findings from a review conducted by Paul McCold (1998) who more than a decade ago challenged concerns on police facilitated conferencing. The data examined in the present thesis support Paul …

U.S. Intelligence Reform A Bureaucratic Politics Approach, Bonnie M. Schickler

Electronic Theses and Dissertations

This study investigates the current bureaucratic struggles that exist within the U.S. intelligence community as a result of the Intelligence Reform and Terrorism Prevention Act (IRTPA) of 2004. The first part of this research examines the history of intelligence reform in the United States beginning with the National Security Act of 1947. The second part provides an indepth discussion of the 2004 legislation as well as an examination of the main bureaucratic conflicts that have arisen between the Director of National Intelligence (DNI) and the rest of the U.S. intelligence community. This study used the bureaucratic politics model to explain …

An Investigation Of The Role Of Aquatic Plants In The Cycling Of Phosphorus And Nitrogen In Murphy's Bottom Lake, Armstrong County, Pa, Melanie Ann Mathews

Electronic Theses and Dissertations

The objectives established for the Murphy's Bottom Ecological Project are to obtain baseline biological inventories and establish a Master Plan for reclamation of the 100 acre site located in Armstrong County, Pennsylvania. Reclamation plans include connecting the 20+ acre Lake, formed by sand and gravel removal, to the Allegheny River to form a backwater wetlands. This study produced a macrophyte species list, mapped the macrophyte community and determined water and plant phosphorus concentrations and water nitrogen concentrations. Replicable laboratory methods for the analysis of these nutrient concentrations were adapted from established molybdenum blue, Nitrate Electrode and HACH Cadmium Reduction Methods. …

Semantic Processing In Adults With High Functioning Autism, Katherine Deragon

Electronic Theses and Dissertations

This study examined the semantic processing of 19 adults with high-functioning autism (HFA) and 18 age and verbal-IQ matched controls using language tasks that varied in the demand for simple or integrative processing. On standardized measures, the individuals with autism had relatively intact vocabulary skills compared to controls, whereas the comprehension and use of figurative language was relatively weaker. The adults with HFA were relatively insensitive to context and incorrectly completed sentences with a commonly associated word pair rather than a semantically appropriate response. On a 3-letter word stem completion task, the autism group provided a similar mean number of …

An Examination Of State And Trait Anxiety Levels Among College Students Based On The Students' Alcohol Usage, Richard Kovalesky

Electronic Theses and Dissertations

This study examines anxiety and level of alcohol consumption among college freshman and sophomore student's to determine if state and trait anxiety are significant factors in high risk alcohol consumption or binge drinking. The State Trait Personality Inventory (STPI) and the Alcohol Use Disorders Identification Test (AUDIT) were administered to gather data on anxiety and alcohol consumption level. The investigation seeks to identify specific personality factors in college students' that impact high risk alcohol consumption and binge drinking in the undergraduate population. Specifically, state and trait anxiety are examined to determine their effect upon college freshmen and sophomores drinking practices. …

Pharmacists' Rating Of Relevance Of Available Information In Deciding The Validity Of Opioid Medication Prescriptions, Leonardo Roberto Torres

Electronic Theses and Dissertations

Pharmacists are tasked with making decisions regarding the validity of prescriptions. Some have proposed factors that should be considered when evaluating a prescription's validity. Yet, there is little known about the decision process that pharmacists employ at the time of dispensing and what information pharmacists deem relevant in that decision-making process. Using an online survey instrument, a sample of community pharmacists were divided into three groups and presented with a prescription scenario. They were asked to rate the relevance of information, which is proposed to be appropriate and inappropriate, available at the time of dispensing. They were asked to consider …

Linear Enamel Hypoplasia At Santa Rita Corozal, Belize, Andrew Peter Tetlow

Electronic Theses and Dissertations

The focus of this thesis is an analysis of a sample of dentition collected from the Postclassic Maya site of Santa Rita Corozal in Northern Belize. The goal of this study is to determine what the presence (or absence) of Linear Enamel Hypoplasia (LEH) can demonstrate about the general health (i.e. stress, disease, nutrition, and weaning age) and social status of a single subset of the Late Postclassic (900-1500 CE) Maya living at Santa Rita Corozal. Specifically, this thesis focuses on dentition of thirteen individuals from a large Postclassic platform group. The sample consists of sub-adult and adult female dentition …

Study Of The Egfr, Src And Stat3 Pathway In Pancreatic Cancer, Soumya Jaganathan

Electronic Theses and Dissertations

Cancer is associated with many molecular aberrations that support the malignant phenotype. In that regard, aberrant activation of epidermal growth factor receptor (EGFR), Src, and signal transducer and activator of transcription 3 (Stat3) occur concurrently in pancreatic cancer and are implicated in the disease phenotype. Notwithstanding, increasing evidence indicates that therapies that target only EGFR or Src are rather ineffective in modulating the cancer phenotype. The poor therapeutic outcome of the monotherapies targeting EGFR or Src may in part be due to the increased incidence of signaling cross-talks among aberrant signaling pathways in cancer. Molecular details of the signaling integration …

In-Frame Mutagenesis Of Genes Encoding A Selenium-Dependent Molybdenum Hydroxylase And Putative Accessory Proteins In Enterococcus Faecalis, Christopher J. Mallard

Electronic Theses and Dissertations

Enterococcus faecalis is a well known nosocomial drug resistant pathogen that is responsible for urinary tract infections, bacteremia, wound infections and endocarditis through the formation of biofilms. It has been shown that 68 genes present within the core genome of E. faecalis are upregulated in biofilm formation. One of those 68 genes is a putative seleniumdependent molybdenum hydroxylase (SDMH). Adjacent to this gene are a series of open reading frames that have been postulated to play a role in the maturation of a labile selenium cofactor. The biosynthesis of this labile cofactor has yet to be studied at either the …

Describing The Phenomena Of Principals' Experiences With Implementation Of Response To Intervention, Lorrie Belk Butler

Electronic Theses and Dissertations

The traditional method of identifying students with disabilities has led to a new innovation being implemented at the school level. Response to Intervention (RTI) is an alternative approach that received federal approval with the passage of Individuals with Disabilities Educational Improvement Act (IDEIA) 2004. On July 1, 2010, RTI became the required process for determining identification of students with learning disabilities for all schools in the state of Florida. Implementation of this approach requires significant changes in how schools operate. Using a phenomenological study design, the purpose of this study was to gain an understanding of the experiences of elementary …

The Relationship Between Average Daily Attendance, School Policies And Procedures And Principals' Emphasis On Attendance Issues In Selected Florida Secondary Schools, Michael C. Arnett

Electronic Theses and Dissertations

Much of the historical research that has taken place over the past 50 years regarding student absenteeism has focused on influences on students over which the principal had very little control such as student demographics, family characteristics and the student personal or psychological factors. Researchers have begun analyzing school climate and its effect on student attendance from the perspectives of students and teachers. School climate is the one aspect that influences a student attendance patterns and can be modified by the principal. This study sought to identify if there was a relationship between the high school principals‟ perspective on student …

Organizational Safety Culture And Idividual Safety Behavior: A Case Study Of The Turkish National Police Aviation Department, Yildirim Uryan

Electronic Theses and Dissertations

Human related accidents in high-risk industries amount to a significant economic hazard and incur tremendous damages, causing excessive operational costs and loss of life. The aviation industry now observes human-related accidents more frequently than in the past, an upswing attributable to cutting-edge technology usage and the complex systems employed by aviation organizations. Historically, aviation accidents have been attributed to individual unsafe behavior. However, contemporary accident causation models suggest that organizational-level factors influence individual safety performance, as human-related accidents take place in an organizational context. The present study examines the formation of organizational safety culture and influence on individuals' safety behavior …

A New Measure Of Parental Self-Efficacy For Enacting Healthy Lifestyles In Their Children, Jonathan W. Decker

Electronic Theses and Dissertations

The issue of childhood obesity has become a pandemic of increasing prevalence and concern. Many behaviors contributing to overweight and obesity, such as dietary intake and physical activity, are learned in childhood. It is known that parents are key agents for change in their children. Therefore, interventions aimed at decreasing childhood overweight and obesity should be targeted at parents. Many parents state that they know the healthy dietary and physical activity behaviors they should adopt for their children, but lack the confidence, or self-efficacy, to enact these behaviors. A review of the literature for self-efficacy for behaviors in these domains …

Effectiveness Of Probiotics In Preventing Antibiotic Associated Diarrhea And Clostridium Difficile In Long Term Care, Marva Edwards-Marshall

Electronic Theses and Dissertations

Problem/Purpose: Antibiotic associated diarrhea (AAD) and clostridium-difficile diarrhea (CDAD) are the most common forms of infectious diarrhea in long-term care facilities. The purpose of this study was to determine the effectiveness of probiotics in preventing AAD and CDAD in the long term care geriatric population, and to identify interventions that can be used to improve clinical practice. Background/Significance: Prophylactic use of probiotics have been purported to decrease the incidences of AAD and CDAD. Previous studies have yielded contradictory results on the efficacy of probiotics. The objective of this study was to evaluate the impact of administration of probiotics on the …

A Plurinational State: The Impact Of The Mas On The Status Of Indigenous People In Bolivia, Pamela Medina

Electronic Theses and Dissertations

In 2005 the largely indigenous country of Bolivia elected its first indigenous president, Evo Morales of the Movement toward Socialism (MAS) Party. Morales ran on a promise of re-distributing wealth, to aid in the development of one of Latin America's poorest countries. Morales' first term in office marked a historical achievement for the indigenous movement in Bolivia, and sparked social change in the country. The government also experienced a momentous achievement through the re-writing of the Bolivian constitution, acknowledging the country's multi-ethnic and pluri-national character. Although his social, domestic and foreign policies have been controversial, particularly in the United States, …

A Phenomenological Description Of The Lived Experience Of Creating Art For Women With Breast Cancer, Laurie Stark

Electronic Theses and Dissertations

Conventional approaches to cancer treatment typically do not address the personal experiences of the women with breast cancer. The aim of this study was to develop a structural description of the lived experience of women with breast cancer who create art, specifically through painting, sketching or drawing. A phenomenological approach was employed to explore the meaning of creating art for four women with a diagnosis of breast cancer. The philosophical underpinnings for this study were based on the phenomenological method of bracketing which allows the researcher and subjects to focus on lived experience. This qualitative methodology provided a means to …

Identification Of Novel Antimalarials From Marine Natural Products For Lead Discovery, Stephenie M. Alvarado

Electronic Theses and Dissertations

An estimated 500 million cases of malaria occur each year. The increasing prevalence of drug resistant strains of Plasmodium in most malaria endemic areas has significantly reduced the efficacy of current antimalarial drugs for prophylaxis and treatment of this disease. Therefore, discovery of new, inexpensive, and effective drugs are urgently needed to combat this disease. Marine biodiversity is an enormous source of novel chemical entities and has been barely investigated for antimalarial drug discovery. In an effort to discover novel therapeutics for malaria, we studied the antimalarial activities of a unique marine-derived peak fraction library provided by Harbor Branch Oceanographic …