Social and Behavioral Sciences Commons^™

Causal Analysis Theory And Application To Alzheimer’S Disease (Ad) And Heart Failure (Hf), Shudi Li

Dissertations and Theses (Open Access)

Alzheimer's disease (AD) and heart failure (HF) are two complex diseases that are caused by the combination of genetic and epigenetic, environmental and other lifestyle factors. Understanding the relationships between genetic and epigenetic variants and other factors of such complex diseases could assist researchers discover disease mechanisms and develop targeted therapies. Much of the research in genetics/epigenetics studies regarding AD and heart diseases have been focused on association analysis. Many researchers have identified genetic/epigenetics variants and phenotypes that are significantly associated with disease pathology. While most of these studies utilize association analysis as the analytical platform, the signals identified by …

Heat Stress Related Symptoms And Pulmonary Function In Oil Spill Response And Cleanup Workers Following The Deepwater Horizon Disaster, Yiyou Li

Dissertations and Theses (Open Access)

The objective of this study was to estimate the relationship between heat stress and pulmonary function among OSRC workers following the Deepwater Horizon (DWH) disaster. Methods: Pulmonary function test results were analyzed from a cohort of oil spill response and cleanup workers 1-3 years following the DWH disaster (N=5,131). Proxies for heat stress was employed by using information on heat stress-related symptoms as well as a questionnaire on stopping work due to heat reported during a structured telephone enrollment questionnaire. Associations between heat stress proxies and lung function were estimated using multivariable linear models and binomial logistic regression models while …

Epidemiology Of No -Syndromic, Orofacial Clefts In A Registry­Based, Birth-Cohort In Texas: Differences By Cleft Type And Presence Of Additional Defects, Maria Luisa Navarro Sanchez

Dissertations and Theses (Open Access)

Although orofacial clefts, which include cleft palate alone (CP) and cleft lip with or without cleft palate (CL±P), are among the most common birth defects, their etiology is complex and is generally not well understood. While some clefts are caused by rare syndromes, the majority occur in the absence of a syndrome, either in association with co-occurring defects or as isolated defects. Among these non-syndromic cases, epidemiologic studies have identified demographic variables that are associated with CP and/or CL±P, such as geographic location and infant sex, as well as several maternal characteristics, though some of these associations have been weak …

Heat Stress Related Symptoms And Pulmonary Function In Oil Spill Response And Cleanup Workers Following The Deepwater Horizon Disaster, Yiyao Li

Dissertations and Theses (Open Access)

Objective: The objective of this study was to estimate the relationship between heat stress and pulmonary function among OSRC workers following the Deepwater Horizon (DWH) disaster. Methods: Pulmonary function test results were analyzed from a cohort of oil spill response and cleanup workers 1-3 years following the DWH disaster (N=5,131). Proxies for heat stress was employed by using information on heat stress-related symptoms as well as a questionnaire on stopping work due to heat reported during a structured telephone enrollment questionnaire. Associations between heat stress proxies and lung function were estimated using multivariable linear models and binomial logistic regression models …

Area-Level Landfill Density And Asthma Prevalence In Urban Texas Areas, Jessica Meighan Herrin

Dissertations and Theses (Open Access)

Environmental exposures, especially air pollutants, pose a threat for an increase in asthma prevalence. In particular, hydrogen sulfide (H2S) gas can cause severe health effects closely resembling asthmatic symptoms. Ambient concentrations of H2S gas correlates with the amount of solid waste found in landfills. The potential for adverse health risks associated with H2S emitted from landfills is of concern for those populations living in close proximity to landfills. Asthma is one of the adverse health effects that can occur due to H2S exposure. However, there is a lack of detailed studies characterizing possible associations between the density of landfills and …

Impact Of Substance Use In Social Networks On Antiretroviral Therapy Adherence For Hiv-Positive Younger Men Who Have Sex With Men, Natascha Del Vecchio

Dissertations and Theses (Open Access)

The community of young men who have sex with men (YMSM) has higher rates of substance use than the general population and the use of alcohol, cannabis, and illicit drugs has been shown to have a negative impact on the HIV care continuum. Our first aim was to understand the prevalence of substance use in the community through the use of self-reported, RDS-II, and RDS-SS estimates. We used multivariable logistic and negative binomial GEE with QIC selection to determine the factors important to having a prescription and staying adherent, respectively. Selected variables were included with a subset of substance use …

Effect Of The Expanded Prospective Payment System On Dialysis Initiation, The Usage Of Erythropoiesis-Stimulating Agents, And Medicare Expenditures, Lu Zhang

Dissertations and Theses (Open Access)

In January 2011, the U.S. Centers for Medicare & Medicaid Services (CMS) implemented the expanded prospective payment system (PPS) for financing the management of end-stage renal disease (ESRD). Expanded PPS may not only change healthcare providers’ decisions about patient care by removing the financial incentives associated with the previous composite rate payment methodology, but also change the Medicare expenditures associated with various treatment patterns by using a constant base rate for all dialysis modalities. This study aimed to examine the effect of the expanded PPS on providers’ decisions on timing of dialysis initiation and ESA utilizations in ESRD patients as …

Hospital Market Analysis Using A Cohort Of Privately Insured Patients With Total Hip And Knee Replacement Procedures, Elifnur Yay Donderici

Dissertations and Theses (Open Access)

Background: Several recent studies have analyzed the contribution of hospital inpatient prices and utilization to variation in medical spending. However, it is still unknown how the drivers of spending for specific procedures differ within privately insured patients. Next, the market concentration of hospitals has been a matter of concern for several decades. However, researchers usually calculate Herfindahl-Hirschman index (HHI) as a measure of market concentration or power, but there is a drawback of using this measure. Hospitals sell differentiated products, and the HHI measure does not take this differentiation into account in its formulation (Gaynor and Town, 2011). Objective: First …

The Multilevel Factors Facilitating Or Impeding Healthcare Access Among Refugees Residing In Bexar County Texas, Howaida Werfelli

Dissertations and Theses (Open Access)

The goal of this study was to increase understanding of healthcare access among refugees by investigating the multilevel factors that facilitate or impede healthcare access among refugees who have resettled in Bexar County, Texas. The multilevel factors facilitating or impeding access to healthcare for refugees resettled in Bexar County were identified as follows: health literacy, level of educational attainment, proficiency (reading, writing and, speaking) in English, proficiency (reading, writing and speaking) in native language, translation services, public transportation, income level, a shortage of healthcare providers, navigation of the healthcare system, the fragmentation of the healthcare system, insurance status, staff shortages …

Health Disparities Across Funcitonal Disability Groups, Katherine Sanches

Dissertations and Theses (Open Access)

Background: People with disabilities experience higher rates of chronic disease and poor health status compared to those without disability. People with disabilities do not participate in community health programs to the same degree as those without disability due to social, programmatic, and environmental barriers. The Community Health Inclusion Index (CHII) is a community health assessment tool which evaluates the degree to which community-level health promoting opportunities to promote nutrition and physical activity are inclusive and accessible to people with disabilities. The CHII assess barriers to inclusion across five domains: build environment, equipment, program/services, staff, and policies. Objective: The purpose of …

The Place Deixis Of Modern Standard Arabic: A Closer Look At The Dimensional System And The Factors That Control The Choice Of Place Deictic Expressions, Ibrahim A. Alluhaybi

Linguistics & TESOL Dissertations - Archive

This dissertation investigates place deixis in Modern Standard Arabic (MSA) focusing primarily on two issues, 1) examining the dimensional system of place deixis in MSA as opposed to Classical Arabic, and 2) exploring the factors that control the choice of place deictic expressions in MSA: Distance (traditional factor), Visibility, and Contact/Control. While the previous literature focused on one-to-one comparison between Distance and one of the other factors (Imai, 2003; Jarbou, 2010; Peeters, Azar, & Ozyurek, 2014), this dissertation offers a more comprehensive comparison in which all of these factors are compared to each other in different contexts and settings. To …

School Psychologists And School Counselors’ Perceptions Of Preparation Received For The Provision Of School-Based Mental Health Services, Sherika Mckenzie

Education (PhD) Dissertations

School psychologists and school counselors are increasingly playing an essential role in the provision of school-based mental health services (SBMHS). This is especially true in California. Unfortunately, there are a few studies that have examined how California school psychologists and school counselors perceive their training to provide SBMHS, how they perceive their role in providing these services, and what they regard as their needs for professional development. The purpose of this study is to determine the extent to which California school psychologists and school counselors believe that their formal pre-service education and later in-service professional experiences have prepared them to …

Examining Health And Mental Health Disparities Between Sexual Minority Youth And Heterosexual Youth In The United States, Savarra K. Tadeo

Social Work Theses - Archive

Although various studies and systematic reviews have found an association between sexual orientation and health and mental health outcomes, few studies have examined a specific sample of adolescents aged 14 to 18 years of age that is generalizable to the entire United States population, while applying minority stress theory and general strain theory to a host of negative mental health outcomes and health risk behaviors in one study. The objective of this thesis is to examine a host of health and mental health outcomes among youth aged 14 to 18 years from a study generalizable to the entire United States …

Effects Of Ethnic Neighborhood Socioeconomic-Physical Characteristics And Individual Attributes On Immigrants’ Travel Mode Choice In North Texas, Kukhyoung Kim

Public Affairs Dissertations - Archive

Previous studies of immigrants’ travel behavior have been conducted mostly in California and the United States as a whole. Even though immigrant population and the share of immigrants have rapidly increased in Texas, only limited studies have been conducted for travel behavior of Hispanic immigrants. No study has examined the effects of attributes at multiple geographic levels on travel behavior. This study intends to fill the void. It examines the effects of ethnic neighborhoods’ social, economic, and physical characteristics on residents’ travel mode choice, with a focus on immigrants in North Texas using the 2017 National Household Travel Survey, the …

Cell Phone Use And Class Participation: An Interdependent Group Contingency, Heather R. Becker

Graduate Theses/Dissertations

Students face distractions in their learning environments. This is true for all students, including college students. One such distraction for college students can be their cell phones. The purpose of this study was to decrease cell phone usage of college students in class using an interdependent group contingency with a multiple baseline research design across three classes. The study also collected data on class participation to discover if decreases in distraction might lead to increased class participation. Results of this study provide evidence to support the use of an interdependent group contingency to decrease student cell phone usage in class. …

Mindfulness And Technology: Evaluating An Online Mindfulness Intervention For Symptoms Related To Sexual Assault, Erica Catherine Johnson

Dissertations

Sexual assault has been found to increase the risk of distressing psychological symptoms including PTSD, depression, somatization, drug and substance use, lower quality of life and experiential avoidance. As such, interventions for reducing the distress and negative impacts of sexual assault are of importance. Mindfulness is of particular interest as it addresses one of the prominent factors known to maintain psychological distress after trauma, experiential avoidance (Polusny et al., 2004; Merwin et al., 2009). Furthermore, an online mindfulness-based intervention can increase the accessibility and reduce the barriers to treatment. A within subjects repeated measures open clinical trial design was used …

Between Two Worlds: A Phenomenological Exploration Of Experiences And Understandings Related To Race For Black Transracially Adopted Emerging Adults, Kyrai Antares

Dissertations

The current study provides a rich description of experiences and understandings related to race for transracially adopted Black emerging adults who were raised in Michigan or Ohio by White parents. Current adoption policy requires that race not be considered as a factor in foster and adoptive placements, and there is no required multicultural, race-focused training for White adoptive parents of children of color. This study begins a new line of research looking closely at the stories of transracial adoptees of a specific age group, racial identity, and geographical location of upbringing. The intention is to gain a better understanding of …

Three Essays In The Dynamics Of Oil Prices, Ahmed Alaabodi

Dissertations

The main objective of my three essays is to study the dynamics and interaction of the price of oil with the downstream sector (refined products), upstream sector (oil production), and across regional markets. I shed light on how the new technological innovation of horizontal drilling and hydraulic fracking that caused the shale oil revolution in the last decade impact the price of oil and impact the petroleum market in the United States.

In the first essay, the dynamic relationship between the monthly price of crude oil and its refined products is modeled. The long-run equilibrium carries valuable information for risk …

Discretionary Dissemination On Twitter, Richard M. Crowley, Wenli Huang, Hai Lu

Research Collection School Of Accountancy

Using an unsupervised machine learning approach to analyze 12.8 million tweets posted by S&P 1500 firms from 2012 to 2016, we find that firms tweet more financial information around significantly negative or positive earnings announcements or accounting filings. Specifically, we observe a symmetric U-shaped relation between the number of financial tweets and the materiality of accounting information events. This relation is consistent with the theoretical prediction in Hummel et al. (2018) which assumes that managers are sensitive to their firm’s fundamental value. We document that this relation also holds for hyperlink usage in tweets about financial information around important events, …

Chinese Equity Market Pricing And Loan Sales Discount In Us Banking, Yichi Zhang

LSU New Orleans Theses and Dissertations

Abstract

In the recent decades, the Fama–French three-factor (1992, 1993, 1996) and five-factor (2015) models become the most widely used asset pricing models in the world. The U.S. (i.e., developed financial market) country-specific 2 additional factors in the 5-factor model, RMW and CMA or profitability and investment premium, empirically cannot further capture the return variation of the classic three-factor/characteristic in China’s stock market (i.e., developing financial markets). In China, based on our result, therefore, the classic three-factor outperforms the five-factor model. We do not presume that firms in different countries share the same features. Following Liu, Stambaugh, and Yuan (2019), …

Ally Or Enemy: The Impact Of Leadership On United States Army Combat Veterans’ Deployment Experiences Who Have Served In Iraq And Afghanistan, Derik Van Baale

Dissertations

Soldiers’ deployment experiences have been well-researched and studied, but the primary focus has been on enemy-induced trauma. Being a combat veteran who served in Iraq myself, and as someone who has counseled a plethora of combat veterans, I am keenly aware that there is more than exposure to enemy fire and the loss of comrades that can leave a lasting impression. Often, the actions by and interactions with leaders during deployments can also prove to be quite impactful to soldiers. However, very little research exists on the impact of leadership behavior as a factor during a soldier’s deployment experience and …

The Effects Of A Course Oriented In Critical Race Theory On White Counselor Trainees’ Multicultural Counseling Competence, White Privilege Attitudes, And Cross Racial Contact, Dawnielle D. Simmons

Dissertations

The current study examined the effects of a single and required Critical Race Theory (CRT)-oriented multicultural course on White, master-level counselor trainees with and without clinical experience. More specifically, the study examined differences in White counselor trainees’ responses to instruments that assessed White privilege attitudes, multicultural counseling competence, and cross-racial contact comparing trainees that had taken the required multicultural course with those who had not. Previous research suggests that when a single multicultural counseling course is a requirement of counselor training, multicultural counseling competence and White privilege awareness tend to increase. In the current study, a CRT-oriented course was used …

Performance Management Training Evaluation In An Autism Treatment Facility, James D. Morrison

Dissertations

The demand for Board Certified Behavior Analysts (BCBA) has increased dramatically since 2010 (Burning Glass Technologies, 2019). A core component of a BCBA’s role is to provide supervision to Board Certified Assistant Behavior Analysts (BCaBA) and other paraprofessionals. Currently there is a lack of research on effective supervision training in the ABA literature. This study evaluated a supervision training program based on the Operant Model of Effective Supervision developed by Komaki (1986). The training developed for this study incorporated basic OBM concepts such as behavioral pinpointing, feedback, and goal setting as well as concepts such as work sampling, which the …

Identifying School Climate Predictors Of School Absenteeism, Victoria Bacon

UNLV Theses, Dissertations, Professional Papers, and Capstones

Attendance is a crucial component of the education system and may be addressed utilizing Multi-Tiered System of Supports (MTSS) models. To effectively utilize such models, clear demarcations between tiers must exist to classify students appropriately. Additionally, relevant risk and protective factors must be identified as targets for intervention and prevention efforts at each tier. Little research exists that identifies school climate factors, and other student-based contextual factors such as academic mindset and social emotional learning, that impact absenteeism. The present study aimed to identify suitable tier demarcations as well as school climate and student-based contextual factors relevant at each tier. …

Network Analysis Of Cognitive Symptom Domains In Alzheimer's Disease (Ad), Abigail Rose Baily

UNLV Theses, Dissertations, Professional Papers, and Capstones

Alzheimer’s Disease (AD) is a degenerative neurological disease process that results in cognitive and functional declines and ultimately results in death. The pattern and course of cognitive and functional decline has been well characterized in AD, however little is known about the interactions between the symptoms. Network Analysis is a recently developed mathematical approach of examining the interactions between symptoms, by exploring the covariance of symptoms. The current study utilized network analysis to examine the multivariate structural dependencies among cognitive domains known to be affected in Alzheimer’s disease. The sample consisted of 864 older adults (60-90 years old), selected from …

The Factor Structures Of Ability And Trait Emotional Intelligences Relative To General Intelligence And Personality, Nicholas Carfagno

UNLV Theses, Dissertations, Professional Papers, and Capstones

Emotional Intelligence is a popular term used to describe one’s experience with their own emotions and awareness of others’. Although emotional intelligence is thought to be a helpful predictor of various variables such as work performance and wellbeing, there is disagreement within the field of the precise definition and method of measurement. The current study examines two of the most popular models of emotional intelligence, ability and trait models, to determine if they are the same construct or two different constructs that share a moniker. Additionally, both ability and trait emotional intelligences’ factor structures are examined through hierarchical and bifactor …

An Examination Of The History And Evolution Of Senior Adult Theatre Accomplishments That Impact Intergenerational Theatre Of The 21st Century, William Français Charette

UNLV Theses, Dissertations, Professional Papers, and Capstones

This thesis explores senior adult theatre recorded interviews, several text book, internet, and published articles that report on findings conducted by educational scholars regarding senior adults in theatre 60 and older. Subsequent background research reflects on multigenerational accomplishments within historical American Theatre and The American Theatre Association discoveries regarding senior adult theatre. Further inquiries include reflections on The American Theatre Association of Senior Adult Theatre, Liz Lerman’s Dance Exchange of Maryland, Ohio State University Senior Adult Theatre programs, University of North Carolina Center for Creative Retirement, Montgomery County Maryland Senior Theatre program, University of Oregon, Art Age, the history of …

Functional Capacity Profiles In Bipolar Disorder And Schizophrenia, Ashley Sara Emami

UNLV Theses, Dissertations, Professional Papers, and Capstones

Serious mental illnesses (SMIs) often have an onset early in life and go on to produce disability and functional impairment, which require ongoing supportive services and loss of productivity. Bipolar disorder (BD) and schizophrenia (SZ) are two of the most common SMIs. BD and SZ differ in their pattern of neurocognitive performance, which suggests differences in the severity of functional impairment between the illness groups. Within these psychiatric illness groups, subgroups may also be identified using cluster analysis. Evidence points to heterogeneity in functional outcomes in BD and SZ, yet very little research has assessed for subgroups based on functional …

Implicit Attitudes, Explicit Attitudes, And Priming: A Preliminary Analysis Of Factors Affecting Use Of Force Decisions, Christopher Allen Forepaugh

UNLV Theses, Dissertations, Professional Papers, and Capstones

This study examines the effects of priming, situational factors, and attitudes on deadly force decision making. A small sample of undergraduates completed high-fidelity deadly force simulations. Simulation results were compared across experimental conditions and various attitudinal and demographic factors. Participants were generally accurate when assessing the threat posed by suspects. Participants primed to expect a threat were more accurate in their decisions but were no more likely to shoot an unarmed suspect. Participants were more accurate when responding to unarmed suspects. Participants more likely to exhibit implicit bias were less accurate. Several attitudinal and demographic traits were associated with deadly …

How Did The Nra Employ Presidential Election Year Propaganda Against Barack Obama Within The Shifting Paradigm Of The Digital Age?, Rodney James Edgar

UNLV Theses, Dissertations, Professional Papers, and Capstones

The National Rifle Association is one of the most successful lobbying groups in the United States of America. There are a few key elements that contribute to this perfect storm of passion, constitutional rights, misinformation and social division. Perception is often credited with being synonymous with reality. As an influential organization, the NRA has used its platform to spread communication, a practice which is enabled and enhanced by the technology, speed of delivery and vast reach that comes with the information age. The focus of this study will be on two artifacts from the digital archives of the NRA. For …