Digital Commons Network^™

Chronically Homeless Transgender Women Obtaining Social Services From Outreach Workers, Larry Jack Cameron

Walden Dissertations and Doctoral Studies

In the United States, homelessness is often connected to traumatic events such as domestic violence, job loss, or post incarceration experiences, frequently resulting in substance use disorders, medical issues, and related mental illnesses. Although researchers have considered how homelessness and social service interventions affect sexual and gender minority youth, they have not adequately studied the causes and effects of homelessness among transgender women. The purpose of this interpretive phenomenological study was to bridge this gap in knowledge by exploring the experiences of chronically homeless transgender women. The research question focused on the lived experiences of chronically homeless transgender women who …

Hydrogen Sulfide Regulation Of Kir Channels, Junghoon Ha

Theses and Dissertations

Inwardly rectifying potassium (Kir) channels establish and regulate the resting membrane potential of excitable cells in the heart, brain and other peripheral tissues. Phosphatidylinositol- 4,5-bisphosphate (PIP2) is a key direct activator of ion channels, including Kir channels. Gasotransmitters, such as carbon monoxide (CO), have been reported to regulate the activity of Kir channels by altering channel-PIP2 interactions. We tested, in a model system, the effects and mechanism of action of another important gasotransmitter, hydrogen sulfide (H2S) thought to play a key role in cellular responses under ischemic conditions. Direct administration of sodium hydrogen sulfide (NaHS), as an exogenous H2S source, …

The Use Of Humor With Families During Pediatric Trauma Intake Assessments, Letitia Batton

Walden Dissertations and Doctoral Studies

Traditionally from a positive psychological view, humor is regarded as an adaptive force, a vital aspect of healing, and possibly a beneficial coping tool when faced with traumatic circumstances. Despite these beliefs, little is known about how humor relieves stress with parents in the initial intake assessment when their child has been traumatically injured. The purpose of this phenomenological study was to explore social workers' use of humor during pediatric trauma assessments. A sample of 6 parents were from pediatric parent trauma support groups to participate in this study, which employed a subject-intensive theoretical framework. Face-to-face interviews and participant observation …

Violent Aggression Exposure, Psychoemotional Distress, Aggressive Behavior, And Academic Performance Among Adolescents, Joyce Renee Evans

Walden Dissertations and Doctoral Studies

Sixty percent of youth indicate exposure to violence. Such exposure is a noted risk factor for youths' well-being, including cognitive, emotional, and behavioral development. However, there is a gap in the literature regarding whether exposure to violence predicts impaired academic performance. The purpose of this quantitative study was to test a model with cognitive, behavioral, and emotional sequelae of exposure as mediators of the relationship between exposure to violence and academic performance among adolescents who are at risk for exposure and attend inner-city high schools. Ninety-nine students, primarily female and African-American, in Grades 10 to 12 at two public schools …

What Women Know: Perceptions Of Seven Female Superintendents, Polly D. Allred, Gerri M. Maxwell, Linda E. Skrla

Benerd College Faculty Articles

An anomalous concentration of female superintendents in mostly rural South Texas prompted this inquiry. South Texas faces critical shortages in personnel due to impending retirement and turnover of existing school administrators and superintendents (Wesson & Marshall, 2012). It is difficult to recruit and retain the best talent necessary to solve tough school improvement challenges—high dropout rates, high poverty, low student achievement, and complex multi-cultural issues—in high needs, Hispanic majority, primarily rural school districts (Trevino Jr., Braley, Brown, & Slate, 2008; Wesson & Marshall, 2012). Krüger (2008) stated women are stronger educational leaders than men. Females seek and obtain leadership credentials …

Role Of The Nurse During Disaster Preparedness: A Systematic Literature Review And Application To Public Health Nurses, Elizabeth Rivera-Rodriguez

Walden Dissertations and Doctoral Studies

After the 2001 attacks on the World Trade Center, public health garnered more attention. This event forced public health nurses to acquire new roles needed to respond to disasters. The purpose of this project was to synthesize the current evidence related to the role of nurses during disaster preparedness and apply that evidence to public health nurses. The practice question focused on the role of nurses during disasters which were not a part of their normal daily activity. The Fineout-Overholt, Melnyk, Stillwell, and Williamson hierarchy for grading evidence was the theoretical framework used. A systematic literature review was conducted to …

Type 2 Immune Responses In The Context Of Helminth Infection, Asthma, Dendritic Cells, And Myeloid Derived Suppressor Cell Function, Sheela Ruby Damle

Theses and Dissertations

Type 2 (T_H2) immune responses evolved to respond to helminth parasite infections by the production of T_H2 cytokines, which stimulate anti-helminth immunity. Macrophage migration inhibitor factor (MIF) is a pleiotropic cytokine, which is produced by many cell types. We demonstrate that mice deficient in MIF have enhanced clearance of a helminth parasite. MIF deficiency in CD4⁺ T cells was found to be the most important for mediating parasite clearance. We mimicked MIF deficiency by administering an inhibitor of the MIF tautomerase activity, sulforaphane, and this also increased parasite clearance (Section I).

T_H2 immune …

Reducing Stigma And Encouraging Help Seeking Intentions Through A Mental Health Literacy Program, Nicole Loreto

Walden Dissertations and Doctoral Studies

Many individuals do not seek help for a mental health problem due to stigma and fear of rejection by peers and family. Researchers have highlighted that the age group least likely to seek help is youth. Stigma acts as an important barrier to help-seeking. Evidence indicating how mental health literacy can reduce stigma and encourage help-seeking remains inconclusive. In this study, the health belief model was used to understand how college students perceived an individual's susceptibility to mental illness and the barriers associated with seeking help. A posttest-only randomized controlled trial evaluated the impact of the Is It Just Me? …

The Molecular Epidemiology Of Tuberculosis In South Carolina, 2005-2011: Estimates Of Recent Transmission And Risk Factors For Genotype Clustering, Amy Kathleen Roach

Walden Dissertations and Doctoral Studies

Because tuberculosis (TB) is a public health threat that continues to elude elimination in the United States, there is a need to identify contributing factors that may have implications for targeted control measures. Molecular studies of genetic clustering are crucial for pinpointing these contributing factors. It is for this reason this study was conducted. This was a non-experimental, cross-sectional population-based molecular epidemiological study of TB in SC from 2005 to 2011. Its purpose was to estimate the proportion of TB that may be due to recently acquired infection and to determine the risk factors associated with the genetic clustering of …

“The Heighe Worthynesse Of Love”: Visions Of Perception, Convention, And Contradiction In Chaucer’S Troilus And Criseyde, John J. Hertz

Theses and Dissertations

This thesis examines three images associated with the manuscripts and early printed editions of Chaucer’s Troilus and Criseyde which I have dubbed “Prostrate Troilus,” “Pandarus as Messenger,” and “Criseyde in the Garden.” These images are artifacts of contemporary textual interpretation that “read” Chaucer’s text and the tale of Troilus. They each illustrate the way in which Troilus, Pandarus, and Criseyde “read” images, gestures, symbols, and speeches within the narrative, and they show how these characters are constrained and influenced by their individual primary modes of perception. Troilus reads but does not analyze. Pandarus actively reads his own meanings into messages. …

Contribution Of A Class Ii Ribonucleotide Reductase To The Manganese Dependence Of Streptococcus Sanguinis, John L. Smith

Theses and Dissertations

Manganese-deficient Streptococcus sanguinis mutants exhibit a dramatic decrease in virulence for infective endocarditis and in aerobic growth in manganese-limited media. Loss of activity of a manganese-dependent, oxygen-dependent ribonucleotide reductase (RNR) could explain the decrease in virulence. When the genes encoding this RNR are deleted, there is no growth of the mutant in aerobic broth culture or in an animal model. Testing the contribution of the aerobic RNR to the phenotype of a manganese transporter mutant, a heterologous class II RNR from Lactobacillus leichmannii called NrdJ that requires B₁₂ rather than manganese as a cofactor was previously introduced into an …

Health Portal Functionality And The Use Of Patient-Centered Technology, Anita Joyce Simmons

Walden Dissertations and Doctoral Studies

Health portals are dedicated web pages for medical practices to provide patients access to their electronic health records. The problem identified in this quality improvement project was that the health portal in the urgent care setting had not been available to staff nor patients. To provide leadership with information related to opening the portal, the first purpose of the project was to assess staff and patients' perceived use, ease of use, attitude toward using, and intention to use the portal. The second purpose was to evaluate the portal education materials for the top 5 urgent care diagnoses: diabetes, hypertension, asthma, …

American Indians' Perceptions Of Obesity And Its Effects On Healthy Lifestyles, Morgan J. Foster

Walden Dissertations and Doctoral Studies

A disproportionate number of American Indians are overweight or obese and have a higher risk of other health concerns compared to the general United States population. Researchers conducting anthropometric studies have found that American Indians have higher body mass indices and worse health than most of the general United States population. There is, however, a gap in the literature regarding American Indians' perceptions, beliefs, opinions, and attitudes of obesity and its effects on their health. The purpose of this qualitative study was to determine whether American Indians view obesity as a major health concern. Focus groups and key-informant interviews were …

The Perceptions And Experiences Of African American Parents In The Management And Care Of Obese Children, Priscilla Ann Huggins

Walden Dissertations and Doctoral Studies

Childhood obesity is a global concern among all ethnic groups. Childhood obesity is a problem that continues into adulthood, exacerbating the incidence of diseases such as diabetes or heart disease. The purpose of this phenomenological study was to explore, understand, and describe the perceptions and experiences of African American parents in the management and care of their obese or overweight children. This study used the health-belief model (HBM) as its theoretical foundation, focusing on the constructs of perceived susceptibility, perceived severity, perceived benefits, perceived barriers, cues to action, and self-efficacy. This research study used an interview tool and an 8-item …

Elementary Teacher Knowledge Of And Practices For Teaching Reading To African American Students, Camille Jacqueline Little

Walden Dissertations and Doctoral Studies

State standardized tests results indicated that between 2012 and 2016, fewer African American students at a rural, Title I elementary school met state standards in reading compared with other racial/ethnic groups of students. A gap in practice existed because the school and district had not conducted studies to understand teacher knowledge and practice as they related to teaching reading to African American students. The purpose of this qualitative case study was to address the problem and gap in practice by exploring elementary teacher knowledge and understanding of the learning needs in reading among African American students. Tomlinson's theory of differentiated …

On Comparative Algorithmic Pathfinding In Complex Networks For Resource-Constrained Software Agents, Michael Moran

Walden Dissertations and Doctoral Studies

Software engineering projects that utilize inappropriate pathfinding algorithms carry a

significant risk of poor runtime performance for customers. Using social network theory,

this experimental study examined the impact of algorithms, frameworks, and map

complexity on elapsed time and computer memory consumption. The 1,800 2D map

samples utilized were computer random generated and data were collected and processed

using Python language scripts. Memory consumption and elapsed time results for each of

the 12 experimental treatment groups were compared using factorial MANOVA to

determine the impact of the 3 independent variables on elapsed time and computer

memory consumption. The MANOVA indicated a …

Predictors Of Mastectomy In Male Breast Cancer, Esther Opara

Walden Dissertations and Doctoral Studies

Male breast cancer (MBC) is rare, and research on the predictors of MBC has been limited because of inadequate funding in and outside of the United States. One goal of this study was to eradicate the stereotyping of breast cancer as a female disease. The emergence of medical technology and education to benefit the public will help to ensure greater health awareness at the individual, community, and global levels. The purpose of this study was to understand the influence of the predictors of age; race (Black, White, and Other); and grade of cancer (I, II, or III) on the outcome …

An Integrated Approach To Malaria Prevention And Control In Rural Cameroon, Naomi Chuiwo Azunie

Walden Dissertations and Doctoral Studies

Malaria is a life-threatening parasitic disease spread to humans through bites of an infected mosquito. In rural Cameroon, malaria is one of the major causes of morbidity and mortality. Several studies have examined the use of various malaria preventive tools; however, there is insufficient literature available on use of an integrated approach to prevent and control malaria in rural Cameroon. The aim of this study was to provide information necessary for bridging the gap in understanding the proper use of insecticide treated nets (ITNs) and antimalarial drugs and the roles of education and socioeconomic status in malaria prevention and control …

Exploring Patterns Of Resilience In Individuals Who Identify As Native American, Kimberly Ann Landrau

Walden Dissertations and Doctoral Studies

Native Americans experience a higher rate of homicide, suicide, and injury, on average, than do others in the United States. There has been little research, however, on turning point and epiphany experiences as factors that contribute to resilience in Native Americans. The purpose of this study was to add to this body of knowledge, and promote social change such as greater engagement and dialogue within Native American communities. The theory that informed the study was resilience theory. Two questions were answered: (a) the ways in which turning point life experiences have correlated with resilience in Native American individuals, and (b) …

The Effectiveness Of Individualized And Rehabilitative Therapies For Children In Foster Care, Alma Pozo-Breen

Walden Dissertations and Doctoral Studies

Children placed in foster care face considerable stress and trauma related to being removed from their homes and subsequently living in a new environment. They may exhibit severe disruptive or antisocial behavior as a consequence. Clinicians and researchers often have not considered that these behaviors may be due to children's underdeveloped cognitive control and response. Treatment approaches that offer more holistic perspectives on stress and the inclusion of individual and specialized therapies may help foster children to better control their responses and return to their biological families sooner. The purpose of this study was to focus on whether individual therapy …

The Relationship Between Self-Efficacy And Advanced Stem Coursework In Female Secondary Students, Bethany Marie Bernasconi

Walden Dissertations and Doctoral Studies

Despite years of attention, gender inequity persists in science, technology, engineering, and mathematics (STEM). Female STEM faculty, positive social interactions, and enrollment in advanced STEM secondary coursework are supportive factors in promoting female students' persistence in STEM fields. To address the gap in understanding these factors, this study employed a sequential mixed method design using a framework of social cognitive theory. Research questions focused on how levels of self-efficacy and perception of personal and social factors among female secondary students related to their enrollment in advanced STEM coursework and extracurricular activities in a rural New England school where gender parity …

Culturally Competent Nutrition Counseling And Health Outcomes Of Patients On Emergency Dialysis, Edlyn Geraldine Bustamante

Walden Dissertations and Doctoral Studies

Undocumented end stage renal disease (ESRD) patients in the United States only have access to emergency dialysis. To compensate for the lack of regular dialysis these patients must follow strict renal dietary restrictions. However, nutrition counseling by a dietitian is not part of the renal management of patients on emergency dialysis. The purpose of this quantitative quasi-experimental treatment-control study was to assess how the application of nutritional counseling that is both culturally and linguistically competent affects dialysis frequency and biochemical lab values such as serum potassium, phosphorus, and vitamin D of patients in emergency dialysis. The study was grounded on …

Nurse Practitioner Navigator Policy And Procedure Protocols In Private Practice, Wendy Grose

Walden Dissertations and Doctoral Studies

In 2010, the Patient Protection and Affordable Healthcare Act (PPACA) implemented changes to reduce healthcare spending that incorporated Centers for Medicare and Medicaid (CMS) incentive programs to reduce 30-day readmission rates in seniors with heart failure. This project includes a policy and procedure for private practice using a nurse practitioner navigator (NPN) led multidisciplinary team (MDT) for the patient-centered medical home (PCMH) to improve communication between hospitals and PCMH to decrease readmission rates in seniors with heart failure (HF). This practice change will provide an implementation and evaluation plan along with plans for future expansion. Meetings were held twice weekly …

Defining The Scope Of Practice For Nurse Practitioners In Miam, Samantha Lucero

Walden Dissertations and Doctoral Studies

Minimally invasive aesthetic medicine (MIAM) is a relatively new field, which lacks a clearly defined scope of practice. The purpose of this project was to clarify the scope of practice for nurse practitioners in MIAM in California. Without a clearly defined scope of practice, nurse practitioners are unable to practice to the full extent of their license which causes them to be underutilized and face liability issues. This project sought to answer the question: What is the scope of practice of the nurse practitioner in MIAM in the state of California? The model of professional nursing practice regulation was the …

Senior Students' Experiences, Perspectives, And Attitudes Of Technological Competencies In Nursing Education, Patricia C. Bennett

Walden Dissertations and Doctoral Studies

Technological standards appear to be needed in undergraduate nursing education, as existing research has yet to establish technological standards for undergraduate nursing students. The purpose of this qualitative study was to examine the lived experiences of senior nursing students with respect to their perceptions regarding exposure to and abilities gained in the areas of information management, information literacy, and computer literacy. The framework of the study was based on Bandura's theory of self-efficacy and the Dreyfus model of skills acquisition. Using a phenomenological approach, in-depth face-to-face interviews were used with a purposive sample to collect data about the technological competencies …

Relationship Between Active Learning Methodologies And Community College Students' Stem Course Grades, Cherish Christina Lesko

Walden Dissertations and Doctoral Studies

Active learning methodologies (ALM) are associated with student success, but little research on this topic has been pursued at the community college level. At a local community college, students in science, technology, engineering, and math (STEM) courses exhibited lower than average grades. The purpose of this study was to examine whether the use of ALM predicted STEM course grades while controlling for academic discipline, course level, and class size. The theoretical framework was Vygotsky's social constructivism. Descriptive statistics and multinomial logistic regression were performed on data collected through an anonymous survey of 74 instructors of 272 courses during the 2016 …

Development Of A Quality Improvement Initiative To Screen For Postpartum Depression, Renee Traube

Walden Dissertations and Doctoral Studies

Postpartum depression (PPD) is a mood disorder affecting approximately 20% of women within 6 months of delivery. Untreated PPD diminishes a woman's functioning and may result in short and long-term consequences for her infant. Screening with evidence-based tools can identify prenatal and postpartum women at risk for PPD, ensure early treatment, and limit adverse maternal and infant effects. Using Rosswurm and Larrabee's evidence-based practice model, a multidisciplinary team of 7 key stakeholders, including directors and a nurse from the departments of OB/GYN, Pediatrics, and Primary Care, a psychiatrist specializing in women's health, and a member of nursing leadership, formed to …

Science Technology Engineering Math (Stem) Classes And Females' Career Choices, Dr Reagan Lorraine Lavorata, Phd

Walden Dissertations and Doctoral Studies

Females have been discouraged from taking science, technology, engineering, and math (STEM) classes during high school and college, resulting in limited access to high-paying STEM careers. Therefore, these females could miss opportunities for these high-paying careers. The rationale of this research was to quantify the relationship between the number of STEM classes the sampled females took, the number of female role models they had during high school and college, their career choices, and salaries. The theoretical construct was based on Erikson's social developmental theory, which postulates a relationship between earlier life events and later life events, and Acker's masculinity theory, …

Sleep Among Young Adults Living In Rural Poverty, Susan Barber Skinner

Walden Dissertations and Doctoral Studies

Lack of restorative sleep is implicated in threats to public health and safety as well as negative individual health outcomes, which are more pronounced among those living in rural poverty. This study addressed the need for an approach to these problems that is sensitive to culture and community. The purpose of this phenomenological study was to explore the lived experience of sleep among young adults living in rural poverty to inform development of strategies to improve sleep behavior in this population. Research questions explored the lived experience of sleep, constructs of the theory of planned behavior which was used as …

Psychological Resilience In Correctional Officers: The Role Of Demographics, Manuel Chapa Villarreal

Walden Dissertations and Doctoral Studies

Correctional officers occupy an important societal role in maintaining safety and assisting in the rehabilitation of inmates; however, both their performance and mental health are highly susceptible to fatigue because of working in a high stress environment. This study investigated the relationship between correctional officers' demographic factors (level of education, marital status, gender, and race/ethnicity) and their psychological resilience. The Connor-Davidson Resilience Scale 10 (CD-RISC-10) was used to measure correctional officers' resilience when responding and or coping with stress. This study utilized the stress-vulnerability model as a framework to investigate protective factors against and risk factors for psychopathological symptoms. Participants …