Digital Commons Network^™

The Relationship Between Painful/Provocative Training Experiences And Capability For Suicide Among Medical Students, Brittney L. Assavedo

Dissertations

The primary aim of this study was to examine the relationship between capability for suicide and painful and provocative experiences related to practicing within the medical profession (mPPEs) among students enrolled in a College of Osteopathic Medicine (n = 114). It was posited that frequency of engagement in mPPEs would predict scores on measures of capability for suicide above and beyond the effects of gender and painful and provocative experiences unrelated to practicing within the medical profession (PPEs). It was also posited that frequency of both witnessing and performing an mPPE would moderate the impact of curriculum component on capability …

Molecular Responses To Deepwater Horizon Oil Spill Contaminants In Estuarine Fish, Elizabeth Jones

Dissertations

The 2010 Deepwater Horizon (DWH) oil spill resulted in the oiling of approximately 2100 km of shoreline. During that time, resident organisms had to contend with the effects of multiple contaminants and suboptimal environmental conditions. This research examines the molecular effects of DWH oil spill contaminants in estuarine fish (CyprinodonvariegatusandFundulusgrandis) across multiple life stages, contaminant concentrations, and in conjunction with environmental stressors.

Our results indicate that:

1. Oil elicits substantial transcriptional effects across life stages in C. variegatus. In adults, exposure to low concentrations of oil and dispersant results in transcriptional effects related …

Design Of Instructional Modeling Language For Learning Objects And Learning Objects’ Repositories, Altaf Siddiqui

Dissertations

The advancement of technology has provided tools to write instruction in every discipline. However, the concepts of automation in the field of instruction is still not used. Teachers around the globe spend countless hours in editing lengthy texts in creating syllabi and reusable components, which are the Learning Objects (LOs). The software developers also experience time-consuming process to decipher the concepts of instruction before it is written. LOs provide a potential mechanism for the educators and software developers to refine curriculum development that uses common components such as exams or syllabi. While the concept of LOs came from software engineering, …

Constraints And Context: Testing The Effects Of Anthropogenic Noise And Social Factors On Avian Signaling Behavior, Erin E. Grabarczyk

Dissertations

Rapid human-generated environmental change has irrevocably altered the natural world. Understanding how animal populations respond and persist within these modified landscapes is critical for mitigating associated negative environmental impacts. For organisms that rely on vocal communication, anthropogenic noise masks signals, reducing the area over which vocalizations can be heard. For birds, noise overlaps with songs males use to defend breeding areas and attract mates, both critical aspects of reproduction. In response to noise, males adjust their song structure, but whether they actually benefit from song changes is unknown. Moreover, it remains unclear whether noise disrupts communication by affecting interactions with …

Evaluation Of Data Collection Operations For Real-Time Influenza Surveillance During An Emergency, Yuwen Gu

Dissertations

It is unclear how data collection operations for surveillance alter the disease portrayal that influenza reported trends attempt to provide during an emergency. This study developed a model that simulates the collection and testing of influenza specimens after an outbreak is declared in Michigan. It performed simulation based optimization to understand which operational factors affect the biases between the growth rates of original and observed influenza incidence trends, and to quantify the predictive power of the influenza incidence trends at different points of data collection. The results show that emergency driven high risk perception increases the reporting, which leads to …

Factors Of Women-Founded High-Growth Technology Startup, Renee Gillard

Dissertations

Purpose: The purpose of this mixed-methods study was to identify and describe critical startup factors of high-growth technology startups as identified by women founders in Seattle, Washington.

Methodology: This mixed-method study identified and described 15 women founders of high-growth technology startups in Seattle. Participants were chosen based on specific criteria and recommendations of a sponsor and expert panel. Interviews were conducted with the participants and they completed an online survey.

Findings: Ten major findings emerged from the data. Founders fostered a strong network of professional and personal relationships to help develop and solidify their identity; they also …

Perceived Teaching Style And Academic Growth In An International School Setting, Jamie Elizabeth Martin

Dissertations

The presence of international schools has grown significantly around the world to accommodate a growing need for academic instruction that differs from that provided in local schools and to meet the rapid demands of globalization. As demands for international schools increase, demands for student performance are also increasing.

This quantitative correlational study seeks to determine if correlations exist between teaching style and student academic growth in mathematics within an international school setting. The study also determines if a dominant teaching style exists and if correlations between teacher grade level and teaching style can be made among international teachers who teach …

An Examination Of Death Anxiety, Psychological Depression, And Adult Attachment Patterns Among Saudi Students In The Usa, Siham Ahmed Alswayel

Dissertations

This study was designed to investigate the relationships between death anxiety, psochological depression, and adult attachment patterns within Saudi students in U.S. universities. The sample of 684 participants was obtained via the Saudi Arabian Cultural Mission (SACM) in the United States. Death anxiety was measured by the ASDA survey, psychological depression was measured by the CESD-R survey, and adult attachment patterns were measured by the RQ survey. All data were self-reported via an online form. There was a significant relationship between death anxiety and adult attachment patterns. Death anxiety and psychological depression were positively correlated. Among the entire sample, adult …

Innovative Teaching Practices To Accelerate Student Learning In The Areas Of Literacy And Science, Michelle Simmons, Paris Bouchard

Dissertations

The researchers of this joint dissertation aspired to create and implement innovative instructional practices that would accelerate student learning. Both researchers believed in the importance of experimenting with structures and processes that lead to instructional impact. They were both passionate about developing an instructional model that would accelerate student learning by focusing on student transfer of skills. They sought to answer the question, Can learning be accelerated when teachers are supported and encouraged to create and implement instructional practices grounded in research? One researcher studied a practice that would potentially increase students’ ability to think critically and problem solve using …

The Impact Of Stress, Coping, Constructive Thinking And Hardiness On Health And Academic Performance Of Female Registered Nurse Students Pursuing A Baccalaureate Degree In Nursing, Diane D. Cox

Dissertations

The purpose of this study was to test a theoretically-derived model of hardiness, constructive thinking, coping complexity and perceived stress level in predicting academic performance and perceived health status among female registered nurse students pursuing a baccalaureate degree in nursing. It was hypothesized that hardiness and constructive thinking would directly affect perceived stress level and coping complexity and indirectly affect perceived health status and academic performance. Neuman's Systems Model together with Lazarus and Folkman's theory on stress provided the theoretical framework.

Knowledge Of Stroke Warning Symptoms And Risk Factors: Variations By Rural And Urban Categories, Kathleen Ann Ennen

Dissertations

Stroke continues to have a devastating disabling effect on Americans while remaining the third leading cause of death in the United States. Most Americans do not recognize the symptoms of stroke causing delay in receiving emergency treatment. The purpose of this research was to assess the knowledge of stroke symptoms and risk factors in a general public Midwest sample. Secondarily, similarities and differences in stroke knowledge between rural and urban groups were identified. The self administered Stroke Recognition Questionnaire (SRQ) directed at stroke knowledge assessment was developed. This descriptive, correlational study used a non-experimental quantitative design.

Environmental Science And Culture: Exploring The Factors Contributing To The Pro-Environmental Behavior Of Rural Youth, Michelle Donlan, Elizabeth Flotte, Patricia Silovsky

Dissertations

This mixed methods study contributes to the pro-environmental behavior literature by introducing the concept of environmental science capital to explore the factors influencing pro-environmental behavior in rural youth. This study’s proposed theory of change attempts to build upon the Kollmus and Agyeman model of pro-environmental behavior by theorizing that environmental science capital is the “missing middle” needed to overcome the barriers to pro-environmental behavior. We hypothesized that meaningful nature experiences, role models, connectedness to nature, STEM interest and environmental identity would help rural youth increase their environmental science capital in order to “bridge the gap” and overcome barriers to pro-environmental …

Cardiovascular Changes During Dialogue, Patricia Liehr

Dissertations

This study was designed to explore the experience of listening, noting how listening was distinct from talking and from silence. There was interest in the potential for listening to engender lowered physiological arousal. Listening was defined within an interpersonal context, as one person listened to another tell a story. Clinical experience has demonstrated that persons who are listening to a clinician share a story often relax. Psychophysiological measures were used to assess the experience of listening. Cardiovascular parameters (mean arterial pressure, systolic blood pressure, diastolic blood pressure, heart rate, skin temperature) and eye contact (videotaped data) were measured during listening. …

The Personal Experience Of Developing Sexuality In Middle Childhood, Marie Winn

Dissertations

The purpose of this study was to investigate the personal experience of developing sexuality in middle childhood.

Let The Circle Be Unbroken: Health Of Elderly Southern Appalachian Widows, Sonya Renae Hardin

Dissertations

The purpose of this study was to facilitate discovery and description of the health experience from the perspective of elderly Appalachian widows. The concepts of health, health beliefs, and health practices were explored using the qualitative research design of ethnography.

Artist As Academic Leader, George H. Brown

Dissertations

The American College President Study (ACE, 2017) revealed that 78% of university presidents are planning to retire within the next nine years. With the increasing complexity of higher education, the demand for innovative leadership will grow as a result of the departure of these leaders. This demand will create opportunities for artist practitioners interested in higher education leadership. However, if artist practitioners doubt an administrative role will give voice to their imagination, will they accept the challenge and opportunity of leadership?

Currently, only 0.33% of university presidents serving four-year degree-granting institutions of higher education in the U.S. come from the …

The Relationship Of An Ipad, A Video Magnifier, And Large Print Text With Oral Reading Outcomes For Children With Low Vision, Rosemary L. Nave Stawasz

Dissertations

Low vision may cause a decrease in visual performance and interfere with daily functioning, especially reading print or text materials. Reading standard text can be particularly challenging for students with low vision in an educational setting and can reduce oral reading rates. Students with low vision may use large print or low vision devices for reading. Limited evidence currently exists to compare oral reading outcomes across various reading media for children with low vision.

The purpose of this exploratory project was to examine oral reading rate, fluency, and comprehension among children with low vision when using an iPad, a video …

The Lived Experience Of Students With Autism Spectrum Disorder Transitioning From High School To A Liberal Arts College, Joseph D. Bishop

Dissertations

Students with Autism Spectrum Disorder (ASD) are transitioning into colleges and universities at a growing rate. All types of post-secondary institutions are seeing this influx, yet some are ill prepared to assist students with ASD, especially within the transition process. There is a gap in the research focusing on students with ASD within liberal art colleges. The purpose of this study is to understand the lived experience of students with ASD as they transition from high school to a small liberal arts college.

My research uses a phenomenological approach in order to develop descriptive themes. I interviewed seven students who …

Chemical Characterization Of Trichoderma Reesei Degraded Date Pits And Its Effect On Growth Performance And Intestinal Bacterial Population And Antioxidant Status - A Comparative Study With Mannose And Mannan -Oligosaccharide On Broiler, Salem Rashed Ali Rashed Al Yileili

Dissertations

With the increasing apprehension over food safety nowadays, there have been relentless efforts aiming for subrogating antibiotic growth promoters (AGPs) in poultry feeds. Thus, this research study aims at investigating the potential effects of using degraded date pits (DDP) as feedstuff and as a natural alternative for antibiotics in poultry feeding. Two feeding experiments were conducted. In experiment 1, the minimum time of feeding a diet containing 10% DDP is required to induce growth-promoting effects on broiler performance. In experiment 2, the influence of feeding 10% DDP was examined as feedstuff at 10% in broilers diets and a growth-promoting agent …

The Role Of Histamine H3 Receptor Antagonists In Modulating Autistic Behaviors And Altered Central Inflammatory Responses In Different Mouse Models Of Autism Spectrum Disorder, Nermin Abdel Wahab Mahmoud Eissa Abdel Zaher

Dissertations

Autistic spectrum disorder (ASD) represents a neurodevelopmental disorder characterized by impairment of social communication and restricted/repetitive behavior patterns or interests. Brain histamine and acetylcholine play a crucial role in cognitive functions. Considering this, the effects of systemic sub-chronic treatment with H3R antagonist DL77 (5, 10, or 15 mg/kg) on autistic-like behavioral parameters, oxidative stress, and neuroinflammation in male Tuck-Ordinary (TO) and C57BL/6 (C57) mice, prenatally exposed to valproic acid (VPA, 500 mg/kg), were investigated. Furthermore, the effects of dual-active H3R antagonist and balanced acetylcholinesterase inhibitor E100 (5, 10, or 15 mg/kg) on autistic-associated abnormalities of VPA- exposed male C57 mice, …

Electrochemically Reactive Membranes For Efficient Biomass Recovery, Pollutant Degradation And Commercialization, Likun Hua

Dissertations

Micropollution in natural waters such as rivers and groundwater aquifers is a widespread problem that prevents these potentially potable sources from being used as drinking water. In the United States, approximately two-thirds of the over 1,200 most serious hazardous waste sites in the nation are contaminated with trichloroethylene (TCE), a potentially carcinogenic compound. Other emerging and environmentally persistent organic micropollutants include polyromantic hydrocarbons (PAHs), organophosphate flame retardants, endocrine disrupting compounds (EDCs), pesticides, herbicides, pharmaceuticals and personal care products (PPCPs). Membrane filtration is one of the most efficient separation processes widely used for water treatment and pollutant removal. However, traditional membrane …

A Multimodal Approach To Investigate Brain Reorganization After Spinal Cord Injury Using Functional Magnetic Resonance Imaging And Functional Near-Infrared Spectroscopy, Keerthana Deepti Karunakaran

Dissertations

Traumatic Spinal Cord Injury (SCI) results in structural and functional neurological changes at both the brain and the level of the spinal cord. Anatomical studies indicate decreased grey matter volume in sensorimotor and non-sensorimotor regions of the cortex following SCI; whereas, neurophysiological findings mostly report altered functional activity in the sensorimotor nodes of the cortex, subcortex, and cerebellum. Therefore, it is currently unknown whether tissue atrophy observed in non-motor related areas has any concomitant functional consequences. Furthermore, the neural underpinnings of adaptive neuroplasticity after SCI is not well-defined in the current literature. Hence, this dissertation is a pioneer study investigating …

Dual Modality Optical Coherence Tomography : Technology Development And Biomedical Applications, Farzana Rahmat Zaki

Dissertations

Optical coherence tomography (OCT) is a cross-sectional imaging modality that is widely used in clinical ophthalmology and interventional cardiology. It is highly promising for in situ characterization of tumor tissues. OCT has high spatial resolution and high imaging speed to assist clinical decision making in real-time.

OCT can be used in both structural imaging and mechanical characterization. Malignant tumor tissue alters morphology. Additionally, structural OCT imaging has limited tissue differentiation capability because of the complex and noisy nature of the OCT signal. Moreover, the contrast of structural OCT signal derived from tissue’s light scattering properties has little chemical specificity. Hence, …

Interventions Of Waterjet Technology In Skin Incisions, Nadi Atalla

Dissertations

This research explores the use of waterjet (WJ) technology in performing skin incisions. The study defines the analytical relationships between the skin properties and the operating parameters of the WJ which include the skin thickness, its elastic modulus, the WJ pressure, the nozzle’s orifice diameter, its stand-off distance and the traverse speed of the WJ as well as the duration of applying the WJ pressure. An analytical model is developed to measure the depth incision of the skin, the water pressure and the water velocity, while using a WJ. Systemization and optimization models that determine the optimal operating parameters levels …

Enzyme-Assisted Development Of Hydrogels As Medical Materials With Injectable, Biodegradable And Biocompatible Properties, Yung-Hao Tsou

Dissertations

Hydrogels were first discovered in the year 1960 by Wichterle and Lim [1], and in the following decades, they have been widely studied because of their unique characteristics including their hydrophilic nature, biocompatibility, and capacity to mimic the extracellular matrix (ECM). Hydrogels based on natural or synthetic polymers have continued to be of interest for tissue engineering and drug delivery due to their ability to encapsulate living cells and control the release rate of drugs or other bioactive molecules such as pharmaceutical proteins.

In the first part of this dissertation, dopant-free photoluminescent hydrogels formed in situ by crosslinking of biocompatible …

Kids These Days: Increasing Youth Engagement In Community Heritage And Social Justice Through The Implementation Of A Youth Participatory Empowerment Model, Melanie Canaday-Talley, Lindsay Clemens, Amanda J. Dworak Rowland, Mary Gillis, Curlinda Mitchell Blacksheep, Jancarlos Jose Romero

Dissertations

The purpose of this co-authored, qualitative, action research study was to examine how to empower youth to become active participants in their communities. Citizen engagement in community and public life is vital to a healthy democracy and young people have a unique place in community citizenry, but are often dismissed or excluded from decision-making. The research team developed a model, the Youth Participatory Empowerment Model (YPEM), to guide youth through a process of identifying and engaging a community heritage or social justice need in their community. The team assembled a guidebook of activities to engage groups in difficult self, group, …

Adult Postoperative Open-Heart Patients: Anemia And 30-Day Hospital Readmission, Lindsey Ryan

Dissertations

Background. In 2013 alone, more than 4% (3.9 million) of patients discharged from a hospital were readmitted. Anemia following a surgical procedure is associated with early hospital readmission.

Purpose/Aims. The following were specific aims of this dissertation:

• Aim 1. To develop an operational definition of the term condition-based maintenance as applied to health care and discuss the applicability and effectiveness of condition-based maintenance within health care.
• Aim 2. To identify the number of adult patients undergoing elective open-heart surgery with preoperative anemia.
• Aim 3. To examine the relationship between preoperative anemia, sociodemographics, and 30-day hospital readmission rates among postoperative open-heart …

Relationships Between Pressure Ulcer Risk Potential, Nursing Interventions, And Pressure Ulcer Presence, Suzanne S. Prevost

Dissertations

The development of pressure ulcers is a common and expensive problem within acute care hospitals. Nurses are expected to identify patients at risk for pressure ulcers and provide preventative interventions accordingly. The purpose of this descriptive correlational study was to identify what preventative nursing interventions were being used, and to examine relationships between pressure ulcer risk, nursing interventions, and pressure ulcer presence in two acute care facilities. Bloch's (1975) Framework for the Evaluation of Nursing Care and Braden's (1987) Conceptual Schema for the Development of Pressure Sores provided the conceptual framework for the study.

Physical Activity As An Intervention For Pain Based On Gate Control Theory, Martha E. Mcdonald

Dissertations

The purpose of this study was to investigate the effect of physical activity on pain tolerance and pain perception. The expectation that physical activity would reduce the perception of pain was deduced from clinical observation and propositions of the Gate Control Theory. The specific proposition tested was that large primary afferent fiber stimulation would inhibit pain perception. Following this proposition, stimulation of innocuous fibers by muscle movement should mediate pain perception. The hypothesis tested was that there would be no difference in time to tolerance or descriptors of pain perception among subjects when they experienced noxious stimulation with no intervention …

Seeking Mirrors: Representation And Identity At Asian Pacific Islander Film Festivals, Yang Jiang

Dissertations

Media representation plays an important role in shaping how we perceive ourselves. For ethnic and racial minorities, studies have confirmed that exposure to stereotypical and negative representations can harm the development of ethnic and racial identity. Currently, however, there is little understanding of how representation can support the development of ethnic and racial identity. Essentially, what might visibility, rather than invisibility, in media representation look like, and what is the relationship between visibility and ethnic and racial identity?

This dissertation sought to address these questions by looking at the experience of Asian Pacific Islander (API) attendees at API film festivals. …