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Designing Policy Solutions To Build A Healthier Rural America, Elizabeth Weeks, Sameer Vohra, Carolyn Pointer, Amanda Fogleman, Thomas Albers, Anish Patel

Scholarly Works

Disparities exist in the livelihood and opportunities for people living in America’s rural communities. These differences result in a much sicker rural America compared to its urban counterpart. Rural counties have higher rates of smoking, obesity, child poverty, and teen pregnancies than urban counties.1 More uninsured adults live in rural areas, causing rural hospitals to close and/or cut vital services such as obstetrics care.2 Rural hospitals also provide fewer mental health services.3 The result is Americans living in rural areas are more likely to die from the five leading causes of death than those living in urban areas: heart disease, …

Perceptions, Practices, And Risk Factors Associated With Typhoid Fever In Nimo Village, Nigeria, George Ilouno

Walden Dissertations and Doctoral Studies

Typhoid fever is a bacterial disease transmitted by the fecal-oral route. In Nigeria, the condition is life threatening and endemic. It affects communities such as Nimo that have limited water, sanitation, and hygiene infrastructure. Previous researchers focused on sanitation and hygienic conditions that contribute to the disease such as household-level hygiene and food and water contamination, including handling practices. However, there is limited knowledge on how the environmental behavior and living conditions of eating and sleeping on a floor harboring fecal materials affect typhoid fever prevalence. The purpose of this qualitative phenomenological study was to explore the perception of the …

Factors Contributing To Community-Associated Carbapenem Resistant Enterobacteriaceae Infections In The United States, Zabrina Lockett

Walden Dissertations and Doctoral Studies

Carbapenem-resistant Enterobacteriaceae (CRE) health care acquired infections are a serious public health threat due to a high mortality rate, economic burden, and depletion of last resort CRE antimicrobials. CRE infections have emerged as community-associated type infections in the United States. For CRE to now have that type of potential is cause for immediate and extensive action. The prevalence of CRE infection cases that were reported as community-associated CRE and health care acquired CRE by examining specific clinical characteristics between 4 selected states that were reported to respective state health departments and the Centers for Disease Control were explored in this …

Experiences Of Refugee Women With Different Physical Abilities In Kenya, Grace Faraja Nkundabantu

Walden Dissertations and Doctoral Studies

Refugee populations worldwide increase every day as a result of social and political wars. Women and children, particularly those with different physical abilities, are the most vulnerable populations affected by atrocities in their home countries and in their countries of refuge. In Africa, it is believed that women with different abilities bring shame to their families. The purpose of this descriptive phenomenological study was to explore the lived experiences of refugee women with different physical abilities, specifically regarding challenges related to accessing services in Kenya. The research question that guided this study focused on the lived experiences of refugee women …

Factors Associated With Prostate Cancer Screening Among African American Men In California, Frank Ibe Agodi

Walden Dissertations and Doctoral Studies

In Los Angeles County, California, prostate cancer (PC) is the second primary cause of cancer-related death in men. Previous studies have focused on sociodemographic factors influencing racial and ethnic inequalities in health in the United States. However, research was lacking regarding if and to what extent social-ecological factors predict PC screening, specifically among African American men residing in Los Angeles County. The purpose of this quantitative study, using a cross-sectional design, was to identify the factors that may align with PC screening among African American men living in Los Angeles. African American men aged 45 and older were the targeted …

Developing Cloud Computing Infrastructures In Developing Countries In Asia, Daryoush Charmsaz Moghaddam

Walden Dissertations and Doctoral Studies

Developing Cloud Computing Infrastructures in Developing Countries in Asia

by

Daryoush Charmsaz Moghaddam

MS, Sharif University, 2005

BS, Civil Aviation Higher Education Complex, 1985

Doctoral Study Submitted in Partial Fulfillment

of the Requirements for the Degree of

Doctor of Information Technology

Walden University

March 2020

Population Density And Spatial Distribution Of Neglected Tropical Diseases In Sierra Leone, Abou B. Funna

Walden Dissertations and Doctoral Studies

Neglected tropical diseases (NTDs) are the most common health conditions affecting the poorest residents of sub-Saharan Africa (SSA). These infections affect an estimated 2 billion people worldwide, including 500 million people living in SSA. About 85% of NTD infections are a result of helminth infections; hookworm is also a common occurrence among SSA’s poorest people, especially children. Schistosomiasis is the 2nd most prevalent NTD after hookworm. This quantitative correlational study investigated population distribution and the spread of NTDs in Sierra Leone. The focus was on 5 major NTDs: ascariasis, hookworm, schistosomiasis, soil-transmitted helminthiasis, and trichuris. Data were obtained from the …

Succession Planning Strategies For Retiring Employees In The Department Of Defense, Danielle Mccullough

Walden Dissertations and Doctoral Studies

In 2017, more than 18% of the workforce in the Department of Defense (DoD) was eligible to retire. Employee retirement continues to present a persistent shortage of DoD knowledge workers, especially in security protections. The purpose of this qualitative single case study within a DoD intelligence agency was to explore succession planning strategies that DoD managers use to ensure knowledge possessed by retirees was transitioned to incumbent knowledge workers. The conceptual frameworks for this study were the 7-pointed star model for succession planning and the 4 pillars of knowledge management. The population was DoD managers from STEM and cyber intelligence …

Early Detection Of Asthma Via Enhanced Resolution Of Small Airways Using Ultra-Low Frequency Impulse Oscillometry, Christopher M. Aguilar

Open Access Theses & Dissertations

Examination of lung function for diagnosis and monitoring of diseases such as chronic obstructive pulmonary disease (COPD) and asthma can be performed with a variety of pulmonary function testing (PFT) techniques. The most commonly prescribed of these procedures are spirometry and whole-body plethysmography. However, these active participation tests depend on forced breathing maneuvers, may be physically exhausting, might not produce enough information, and are susceptible to being subject-dependent. In contrast, passive PFT approaches such as the forced oscillation technique (FOT) and the impulse oscillometry system (IOS) are increasingly being utilized for measuring lung mechanics because they require only minimal participation, …

Structure-Property-Performance Evaluation Of Refractory Metal Incorporated Gallium Oxide Thin Films For Extreme Environment Applications, Anil Krishna Battu

Open Access Theses & Dissertations

An approach is presented to design refractory-metal (RM) incorporated Ga2O3-based materials with controlled structural, mechanical, and optical properties. A model system based on molybdenum (Mo) doped Ga2O3 (GMO) has been considered to elucidate the combined effect of RM-doping and processing parameters on the properties and oxygen sensor performance of GWO nanomaterials. The molybdenum (Mo) content in Ga2O3 was varied from 0 to 11 at% in the sputter-deposited Ga-Mo-O films. Molybdenum was found to significantly affect the structure and optical properties. While low Mo content (≤4 at%) results in the formation of single-phase (β-Ga2O3), higher Mo content results in amorphization. Chemically …

Predicting Competency In Motivational Interviewing Through An Objective Empathy Task, Kylah Moneek Clark

Open Access Theses & Dissertations

In the process of disseminating motivational interviewing (MI) it is important to identify who benefits from initial workshops and which trainees would benefit from an extended training model that involves coaching and performance feedback, which has recently been advocated. Prior research attempting to determine who benefits from training has failed to show associations between baseline self-reported empathy and training outcomes. However, the use of an objective empathy task may address the shortcoming of prior research. The purpose of the present study was to predict competency in motivational interviewing skills following training using an objective empathy task. In addition, we investigated …

Brokering Social Capital: A Qualitative Case Study On How A Hispanic Serving Institution Fosters Social Capital For First-Generation, Latinx, On-Campus Student Employees, Christian Corrales

Open Access Theses & Dissertations

Around 80 percent of undergraduates enrolled in U.S. higher education institutions are employed (Carnevale et al., 2015; Kena, Musu-Gillette, Robinson, Wang, Rathbun, Zhang, & Velez, 2015). Research shows that student employment is one of the most critical activities that affect students' post-secondary experiences and decisions while enrolled (Pascarella & Terenzini, 2005; Perna 2010; Riggert et al., 2006; Tinto, 1993). The present study aimed at understanding how employing organizations and workplace environments of first-generation Latinx on-campus student employees influenced their ability to build social capital and navigate through higher education.

A social capital lens was used to help understand student participants' …

3d Printed Alginate-Based Zinc Oxide Nanoparticle Scaffolds For Wound Healing, Carol Cleetus

Open Access Theses & Dissertations

Effective treatment of chronic wounds is essential for the prevention of infection and scar tissue formation, requiring a novel approach to address the limitations of existing options. This study utilizes Calcium Chloride (CaCl2) crosslinked alginate, a common biomaterial widely used in wound dressing, and UV activated Zinc Oxide (ZnO) nanoparticles (NPs) for their potential hydroxyl radical mediated antibacterial applications. ZnO NPs were synthesized by combustion method from Zinc Nitrate Hexahydrate and Sucrose. Scanning Electron Microscopy (SEM) and X-Ray Diffraction (XRD) characterization were used to verify composition and NP size. Terephthalic Acid, used as a fluorescent probe, confirmed the generation of …

Testing A Culturally Tailored Intervention To Promote Hpv Vaccination Intentions In Latina Young Adults, Erica Landrau

Open Access Theses & Dissertations

The human papillomavirus (HPV) is the most common sexually transmitted infection in the United States and a known risk factor for cervical cancer. Several HPV vaccines have been approved as a primary prevention option. Vaccination rates remain low among Latinas, despite a disproportionately high rate of cervical cancer rates of among this population. Few culturally tailored interventions to promote HPV vaccination have been developed for Latina young adults. The first objective of the present study was to test the efficacy of a culturally-tailored fotonovela to increase intention to vaccinate among Mexican American female young adults. The second objective was to …

Comparing The Language Of Computer-Mediated Versus Face-To-Face Motivational-Type Interviews, Karla Deyanira Llanes

Open Access Theses & Dissertations

The current study seeks to determine if computer-mediated and face-to-face motivational-type interviews elicit the same level of affect words and insight words in young adults who are ambivalent about their marijuana use. One-hundred and fifty young adults from a large urban university were randomly assigned to complete a brief motivational-type interview using a standard face-to-face format or instead a novel computer-mediated format. In the computer-mediated format, the interviewer and participant communicated via computer from separate rooms. A two-month follow-up survey assessed each participant's past two-month marijuana use. Pennebaker's Linguistic Inquiry and Word Count (LIWC) program was used to determine if …

Working Memory Performance In Spanish-English Bilinguals' First And Second Languages, Jordan Allyssabeth Orozco

Open Access Theses & Dissertations

Background: Working memory is important for speech understanding in that speech recognition requires the processing, temporary storage, and manipulation of information during complex cognitive tasks. Previous research has shown contradictory findings on whether bilinguals have an advantage in working memory capacity compared to their monolingual counterparts. Differences in findings have been attributed to various factors to include task-dependent effects and poorly matched samples. Therefore, the existence of a bilingual advantage in working memory remains unclear.

Purpose: The purpose of this study was to examine the working memory performance of Spanish/English bilingual individuals compared to English monolingual individuals using a linguistically …

Examining The Role Of Perceptual Biases In Health Care Utilization Among Adults, Sandra L. Oviedo Ramirez

Open Access Theses & Dissertations

A large body of literature has identified significant racial and ethnic disparities in health care and health outcomes. In an effort to gain an understanding of how to achieve health equity, it is crucial that we broaden our search for factors beyond access factors that may explain these observed disparities. The present study examined how cultural differences related to attention (context vs. focal) and attribution (internal vs. external) influence individuals' propensity to identify symptoms as potential markers of poor health, and ultimately, report less utilization of professional health care services. Using a community sample of 252 (n = 134 Latinos …

Velocity Measurements Using A Piezoelectric Plate As A Sensor, Paul Perez

Open Access Theses & Dissertations

In this study, the voltage output from a piezoelectric sensor placed in a test section is used to predict flow velocity changes. The piezoelectric made of PZT is thought to be advantageous due to its fast response time, potential durability at higher temperatures, and self-powered characteristics. Having said that this sensor could be implemented into the Hybrid Performance Project built by NETL to characterize and mitigate the probability of compressor surge and stall. The problem arises because of the added large volume between compressor and gas turbine and resultant changes to system fluid dynamics. The effect of the piezoelectric sensor …

"Celebrated, Not Tolerated": How Transgender And Nonbinary Individuals Navigate The Social World, Hannah Penklis

Open Access Theses & Dissertations

Seventeen individuals (4 trans men, 2 trans women, and 11 nonbinary people) were interviewed in this exploratory study on how transgender and nonbinary people feel about their bodies, and the role that social support plays in their experiences and feelings about their bodies. Semi-structured interviews revealed themes, including how transgender and nonbinary people interact with social support, their motivations for gender affirming medical interventions, and non-medical ways in which they alter their physical appearance. Participants reported a variety of experiences within their body across the spectrum of human experience: in some cases, individuals changed their weights dramatically; others felt strong …

Novel Tools For Community Based Assessment And Monitoring Of Forest Phenology Response To Environmental Variability And Change In The Tropics, Jennifer Christine Ramos-Chavez

Open Access Theses & Dissertations

Tropical ecosystems provide a variety of services and resources for global well-being. However, landscapes within this biome are undergoing rapid changes mostly due to anthropogenic activities. These systems are further impacted by current, extreme fluctuations in climate, including climate change and El Niño Southern Oscillation (ENSO). With predicted future increase in strength and occurrence of these climate oscillations, these landscapes and their plant communities will be impacted and changed. There is a gap in research and knowledge among tropical Indonesian landscapes in regards to the effects of global climate change at the community level. Therefore, there is an urgent need …

Mother Nature, Lady Justice: Ecofeminism And Judicial Decision-Making, Jonathan Alexis Picado

Open Access Theses & Dissertations

Ecofeminism offers a feminist perspective that links gender to how humans relate to the natural world. As such, this framework explores the connections between the oppression of nature and the oppression of women, such as widespread views that both women and nature are property, are to be dominated, and are most valuable when cultivated and curated by men. I apply this philosophical and sociological framework to judicial decision-making, where women judges should view environmental issues as women's issues and thus be more likely to vote in favor of the environmental protections relative to her male peers. I evaluate this theory …

Further Validation Of The Treatment Self-Regulation Questionnaire For Assessing Motivations For Responsible Drinking: A Test Of Self-Determination Theory, Dylan Richards

Open Access Theses & Dissertations

Alcohol protective behavioral strategies (PBS) are cognitive-behavioral strategies used before, during, and/or after drinking to reduce alcohol use and alcohol-related problems. Self-determination theory (SDT) provides a potentially useful framework to understand motivations for responsible drinking, which is operationalized in the present study as PBS use. In the present study, the relation of motivations for responsible drinking, as assessed by the Treatment Self-Regulation Questionnaire (TSRQ), with other SDT constructs (psychological need satisfaction and dispositional autonomy) and PBS use, alcohol use, and alcohol-related problems were examined among college students drinkers. A sample of 507 college students who reported consuming alcohol at least …

Essays On The Spillover Effects Of Whistleblowing On Peer Firms, Emmanuel Joseph Sequeira

Open Access Theses & Dissertations

This Dissertation examines the spillover effects of media reported corporate whistleblowing on industry peer firms in two essays. The first essay examines peer firm risk-taking and firm efficiency following a whistleblowing allegation. I find that peers significantly reduce their risk-taking following the allegation. They also increase their efficiency following the allegation and increase their market share at the expense of the whistleblowing firms, leading to increased profitability. My second essay examines peer firms' earnings management choices following a whistleblowing allegation. I find that peer firms significantly reduce their manipulation of real activities and reduce their use of accruals-based earnings management …

Investigation Of Iron Doped Gallium Oxide (Ga-Fe-O) System: Structure Property Relationship And Performance Evaluation For Optical And Catalytic Applications, Swadipta Roy

Open Access Theses & Dissertations

From September 2012 to May 2015, a phenocam monitored the seaward edge of a protected mangrove forest. Calculated GCC revealed seasonal greening patterns of a mangrove species, Rhizophoa apiculata, and an overall increase in the GCC, suggesting mangrove expansion. In comparing temperature and precipitation effects, it was found that this particular mangrove species had a greening optima at temperatures between 28°C and 28.5°C, and greening and canopy development response lag time of 10 weeks in response to precipitation. Tree saplings were monitored and showed to grow by 50%, mostly during a three month period during the rainy season. The establishment …

The Effects Of A 6-Week Controlled Whole-Body Vibration Training Program In Reducing Falls Risk Among Healthy Older Adults, Fabricio Saucedo Jr.

Open Access Theses & Dissertations

Falling is the second leading cause of accidental or injury-related death in the aging population worldwide and a leading cause of serious injury. Whole-body vibration (WBV) training has been implemented as a way to improve functional performance among the elderly and reduce the falls risk. The purposes of this study were: 1) examine to what extent a six-week course of WBV training reduced falls risk and improved fall outcomes in response to slips, and 2) examine whether the benefits of WBV training could be retained at least 2 months after the completion of the entire training session. A total of …

Partitioning Variation In Vegetation And Landscape Functionality In Arid Land Piosphere, Eahsan Shahriary

Open Access Theses & Dissertations

A piosphere is an interaction between vegetation community, watering point, and grazing livestock/wildlife. In this Dissertation, I begin by reviewing the concept of the piosphere, and the progress, knowledge gaps and common statistical approaches and errors in piosphere research. Landscape functionality, plant community distribution and their influencing factors on a piosphere in Iran are then investigated.

A total 862 piosphere publications of multiple types from 68 countries and 10 different languages during the period of 1915 â?? 2018 were reviewed. Australia was the most productive country followed by South Africa, the USA, Botswana and Argentina. Ivan Thrash is the most …

Effects Of Manual Resistance Training On Body Composition In Young Adults, Lizette America Terrazas

Open Access Theses & Dissertations

Resistance training (RT) is a form of exercise that is important for strength development. Manual Resistance Training (MRT) is an alternative mode of RT that utilize an external resistance provided by a partner. MRT requires minimal equipment and is a convenient form of training for individuals who do not have access to traditional weight training equipment The purpose of this study was to investigate the effects of 8 weeks of MRT intervention on Fat Mass (FM), Lean Mass (LM) and Bone Mineral Density (BMD) and to compare the changes to the Weight Resistance Training (WRT) group. Thirty young adult (Females:18, …

Spectroscopic Techniques To Characterize And Develop Sensing Methods For Titanium Dioxide Nanoparticles In Water, Reagan Scott Turley

Open Access Theses & Dissertations

Titanium dioxide nanoparticles are being used in ever increasing amounts and applications in many consumer products and industrial processes including water treatment. These nanoparticles have not been shown to be toxic to humans via ingestion, but it is worthwhile to develop a portable and rapid detection method to quantify the concentration of nanoparticles in treated drinking water. Current detection methods include single particle inductively coupled plasma mass spectrometry, inductively coupled plasma optical emission spectrometry, tunneling electron microscopy and scanning electron microscopy. While extremely sensitive, these techniques are expensive and sometimes require extensive sample preparation before analysis. A preliminary study on …

Substance Use Among 7th - 9th Grade Adolescents: The Role Of Risk- Related Variables In The Probability Of Use Involving Tobacco, Alcohol And Marijuana, Susana A. Villalobos

Open Access Theses & Dissertations

The role of schools in preventing substance use among adolescents is a priority for public health advocates across the United States. In recent years the United States has seen an increase in prescription medication overdoses in adults and adolescents. A lack of research exists of adolescents in middle school substance use (Welsh, & Rappaport, 2018). Trends of adolescent substance use of tobacco, alcohol and marijuana continue to rise. Early onset use of legal and illegal substances has proven to increase the odds of long-term use of adolescence into adulthood. Parents, educators, community advocates and law enforcement have long tackled the …

Reference Dependent Prices In Bargaining: An Experimental Examination Of Precise First Offers, Erik O. Kimbrough, David Porter, Mark Schneider

ESI Working Papers

Evidence from psychology and marketing suggests that those who make a "precise" first offer in bargaining get a better deal than those who make a "round" first offer. We report on a series of experiments designed to test for and improve our understanding of the "precise first offer" (PFO) effect in bargaining and whether it likely reflects rational optimizing or equilibrium behavior. Our experimental treatments vary whether decisions are incentivized and whether the PFO effect can emerge as an equilibrium of a cheap-talk signaling game. We find evidence of a PFO effect when subjects read a vignette and make unincentivized …