Digital Commons Network^™

Regional And Historical Influences On The Spatial Distribution Of Neotropical Trees, Maria Isabel Loza

Dissertations

At small spatial scales, the composition of species assemblages depends on local conditions and the dispersal of propagules from surrounding regions. In turn, processes taking place at broad temporal and spatial scales, including changes in regional physiography and climate, shape the species pools in these source regions. This dissertation seeks to understand the effects of regional and historical processes on the spatial distribution of Neotropical tree species. In chapter 1, I investigate regional enrichment of local species assemblages testing two hypothesis: i) local species assemblages are enriched by unfiltered species pools, which are composed of all species that can …

A Mixed Methods Investigation Of Student Achievement And Satisfaction In Traditional Versus Online Learning Environments, Jessica L. Manion

Dissertations

To evaluate student achievement and satisfaction in different course delivery modes the researcher investigated both traditional and online undergraduate accounting courses at a private Midwestern university. By comparing student achievement and satisfaction in traditional versus online undergraduate accounting courses, the study aimed to highlight what works best in education and provide guidance to administrators and instructors alike. This investigation included students enrolled in undergraduate accounting courses during the 2016-2017, 2017-2018, and 2018-2019 school years. The mixed-methods framework allowed the researcher to examine this educational issue from the quantitative and qualitative perspectives. Quantitatively, the researcher examined secondary data from both student …

Estimation Of Infectious Intestinal Disease Burden And Description Of The Infectious Disease Surveillance System In Ras Al Khaimah, United Arab Emirates, Fatema Hamdan Saif Al Alkeem Al Zaabi

Dissertations

Introduction: Infectious disease (ID) is an ongoing problem worldwide. In order to manage this problem, it is important to have an integrated and effective surveillance system that can be used to estimate the burden of ID. There is a scarcity of studies published on the prevalence of IDs in the United Arab Emirates (UAE), both in hospital settings and in the community. Infectious Intestinal Disease (IIDs) have been one of the most commonest IDs that have been studied in the community around the world, there are no studies on the prevalence of IIDs in Ras Al Khaimah (RAK). Furthermore, while …

Negotiating The Intersection Of Arabic And Anglo-American Literary Journalism: Exploring Possibilities, Challenging Canons, Samah Gomaa Abou Marzouk

Dissertations

Literary journalism is an art form that combines storytelling techniques with the verifiability of standard journalism. Research in the field is recent and predominantly Western. Unlike Anglo-American literary journalism, there are no studies on Arabic literary journalism as a stand-alone art form in Arabic and only one in English, which examines the reasons for its scarcity. This study aims to prove otherwise. The objective of this research is to combine history and criticism in exploring Arabic literary journalism; examine it is predecessors, characteristics, motives and how it relates to its Anglo-American counterpart; and determine whether the two are fundamentally different …

African Centered Education, The Maji Shujaa Online Academy: A Descriptive Case Study, Beverly Jackson

Dissertations

The purpose of this descriptive case study framed by African centered theory, is to advance the knowledge about the online African centered educational programming, Maji Shujaa Academy. The researcher is the Chief Executive Officer( CEO) and lead teacher/lead developer of online educational media for the Academy. Considerable private African-centered educators with enterprenueural spirit have advanced and created online African centered global educational programming for the students of Africa and African Diaspora population groups today. Yet the available literature is shallow with regard to the workings of online African centered educational programming. This study explores in which the online Academy makes …

A Computational Study Of Sleep And The Hemispheres Of The Brain, Tera Ashley Glaze

Dissertations

Sleep and sleep cycles have been studied for over a century, and scientists have worked on modeling sleep for nearly as long as computers have existed. Despite this extensive study, sleep still holds many mysteries. Larger and more extensive sleep-wake models have been developed, and the circadian drive has been depicted in numerous fashions, as well as incorporated into scores of studies. With the ever-growing knowledge of sleep comes the need to find more ways to examine, quantify, and define it in the context of the most complex part of the human anatomy – the brain. Presented here is the …

Law Enforcement Officers' Romantic Relationships Strengths : A Mixed Methods Analysis, Mary Telisak

Dissertations

This study explores the diversity of personal and interpersonal features associated with relationship quality for law enforcement officers and their romantic partners. A concurrent, embedded, mixed methods design was used to address the central research question, "What interpersonal characteristics and work- and home-based contextual factors are associated with relationship quality for law enforcement officers and their romantic partners?" Specific efforts were made to account for the gaps left by existing literature on the romantic relationships of law enforcement officers. Participants were recruited from four Midwestern communities of similar size and demographic composition in the winter of 2018-2019. One hundred ten …

Evaluating The Effectiveness Of Emiratization Strategies In The Quasi-Private Sector: Multiple Case Studies From The Manufacturing Sector In The Uae., Hana Mohamed Al Mahri

Dissertations

A central aspect of the United Arab Emirates’ strategic vision for a post-oil future is to make better use of its indigenous human capital, thus securing a return on the substantial investment the government has made in education, and reducing the reliance on a largely non-national labour force. While Emiratization (a policy to replace expatriate workers with citizens) has been successful in the public sector, the private sector is still largely staffed by expatriates with citizens representing less than 5 per cent of the total workforce in this sector. Therefore, Emiratization efforts have recently been focusing on enhancing employment opportunities …

The Risks Of Methemoglobinemia With The Use Of Two Antimicrobials In Low Birth Weight Infants, Denise J. Poirier Maguire

Dissertations

The purpose of this study was to determine the degree of risk of methemoglobinemia and extent of skin breakdown when 0.5% chlorhexidine was used as a topical antimicrobial in a population of low birth weight (LBW) infants.

Pressure Ulcers And Prevention Among Pediatric Patients And Factors Associated With Their Occurrence In Acute Care Hospitals, Ivy J. Razmus

Dissertations

Pressure ulcers are a health-care concern for all patient populations; however, younger patients, including infants, have different etiologies associated with pressure ulcer development. The influence of hospital, unit, and nursing factors on hospital-acquired pressure ulcers (HAPU) rates have not been evaluated in pediatric patients. Comparative data for pediatric patients is necessary for hospitals to improve the care related to prevention and treatment of pediatric pressure ulcers.

The purpose of this study was to describe (a) the pressure ulcer prevalence rate and the rate of HAPU in pediatric patients; (b) the frequency of patient pressure ulcer risk assessment and prevention …

Effect Of Heparin Injectate Volume On Pain And Bruising Using The Roy Model, Pamela S. Stewart Fahs

Dissertations

This quasi-experimental study examined the effect of heparin injectate volume on pain and bruising using the Roy model. The study was undertaken to provide nurses with information on responses produced by two injectate volumes.

Influence Of The Economy On Teen And Adult Birth Patterns In Oklahoma 1980 Through 1995: A Time Series Analysis, Sandra Kay Cesario

Dissertations

Influence of the economy on birth patterns was examined separately for teen and adult women. Competing theories and conceptual frameworks currently exist to describe the cyclic patterns found in reproductive behavior and their relationships to economic condition. Pro-cyclic models suggest a lagged positive association between economic conditions and numbers of births whereas counter-cyclic models indicate that a negative or inverse relationship exists. Three distinct problems were addressed in this study. First, the competing economic models was addressed. Second, this study of daily and weekly births to allow greater sensitivity in testing the relationship of an economic variable number and timing …

Managing My Pregnancy: A Grounded Theory Of Pregnancy And Childbearing Beliefs And Practices Of Women Of Mexican Descent, Lorena Consuelo Guerrero

Dissertations

Examples of pregnancy-specific health beliefs and practices of Hispanic women are found in the medical literature, but the findings regarding the beliefs and practices are often outdated, limited, mostly curative in nature, and are often dismissed as benign cultural practices of a mainly homogeneous cultural group. Hispanic women incorporate both conventional and biomedical practices with traditional medicine/complementary and alternative medicine in their treatment of illnesses. The findings from this study served to illustrate current pregnancy-specific health beliefs and practices of pregnant Hispanic women of Mexican origin. The purpose of this study was to gain an understanding of the pregnancy-specific health …

Development Of The Woman Abuse Screening Tool, Wendy K. Taylor

Dissertations

Researchers reported that 25%-33% of female trauma victims had injuries caused by battering. More than one million women per year seek medical care for injuries caused by battering. Of those who seek medical care, only one in ten is officially identified as a battered woman. Women are routinely screened for a variety of problems, conditions, or medical disorders, but violence is not included. An important issue related to identifying battered women is the lack of an appropriate comprehensive screening tool. The purpose of this study was threefold: (a) determine whether using a comprehensive abuse screening tool results in an increased …

A Silent Epidemic With No Voice: Alzheimer's Education In An African American Midwest Community, Sandra D. Fields

Dissertations

Alzheimer’s disease is a growing crisis in this country, particularly in the African American community. Despite this awareness by the health care community and educational programs offered about the disease, a deficit in research assessing the impact of these programs exists. Consequently, the purpose of this study is to analyze the key criterion relative to the educational programs about Alzheimer’s offered by local organizations and the impact they have on a Midwest African American community.

According to research regarding Alzheimer’s disease, African Americans continue to go undiagnosed and untreated. The literature review in this study explores the synergy of three …

Analyzing Evolution Of Rare Events Through Social Media Data, Xiaoyu Lu

Dissertations

Recently, some researchers have attempted to find a relationship between the evolution of rare events and temporal-spatial patterns of social media activities. Their studies verify that the relationship exists in both time and spatial domains. However, few of those studies can accurately deduce a time point when social media activities are most highly affected by a rare event because producing an accurate temporal pattern of social media during the evolution of a rare event is very difficult. This work expands the current studies along three directions. Firstly, we focus on the intensity of information volume and propose an innovative clustering …

Enzymatic Biofuel Cells In A Sandwich Geometry With Compressed Carbon Nanotubes/Enzyme Electrodes & Hybrid Patch Applications, Biao Leng

Dissertations

Enzymatic biofuel cells (EBFCs) convert the chemical energy of biofuels, such as glucose and methanol, into electrical energy by employing enzymes as catalysts. In contrast to conventional fuel cells, EBFCs have a simple membrane-free fuel cell design due to the high catalytic specificity of the enzymes, but the power densities obtained are lower. Although the primary goal of research on EBFCs has been to develop a sustainable power source that can be directly implanted in the human body to power bio-devices, other applications such as the use of a flexible film or fuel cell patch as a wearable power source …

Zona, Zachary Williams

Dissertations

This dissertation is a collection of poems written between 2011 and 2019. Zona the title of the book, meditates on themes of precarity, loss, imagination, and transformation. Drawing from both the Surrealist and Deep Image traditions, the book comments on life and aesthetic experience under late-stage capitalism.

The Development Of Thad Jones’ Arranging/Scoring Style: A Comparative Study Of Six Works For Large Jazz Ensemble, Chang Su

Dissertations

This dissertation examined and compared six pieces for large jazz ensemble composed and arranged by Thad Jones. The analyses focused on Jones’ arranging and scoring techniques developed through three distinct periods of his career. In Jones’ early period, his arranging style showed influences from the Count Basie Orchestra as evidenced in blues vocabulary, call-and-response between saxophones and brass, and the form and structure of the arrangements. In his middle period, he explored symphonic sounds, suite-like forms, and elements from rock-jazz and funk-jazz music. In his late period, a more comprehensive development of tension and release guided his arranging. The vacancy …

Group Differences In Motivation And Achievement Outcomes Within A First-Year Seminar, Selani D. Flores

Dissertations

This intervention study explored potential motivation, achievement, and gender differences among students within an existing first-year program (n = 388). This intervention program (FYE 101) was chosen because it has a diverse population and a large number of underserved students, it fosters content that is grounded in motivational research, and it has had a positive impact on increased student GPA and fall-to-fall persistence. Prior research showed that FYE 101 was effective in mitigating academic outcomes for students within the course when compared to students who did not participate, however, we do not know if it would be equally effective for …

A Qualitative Investigation Of The Andragogical Teaching Methods Used In Adult Group Piano/Organ Instruction, Deborah Timpone Curran

Dissertations

This qualitative case study explored adult keyboard (piano/organ) students in a group environment at a piano/organ store in the Midwest United States. Included in the study was a Level 1 Piano class, a Level 2 Piano class, and one Seniors’ Organ class. The researcher explored the use of andragogical principles in the group keyboard classes based upon the programming and instruction, especially in connection with Knowles’ six assumptions and eight processes of andragogy. In addition, the researcher also focused on the presence of trust in the relationships between instructor(s) and student participants, or the lack thereof. The use of Henschke’s …

Piezoelectric Energy Harvesting Via Frequency Up-Conversion Technology, Amin Abedini

Dissertations

Ambient energy harvesting has attracted significant attention over the last years for applications such as wireless sensors, implantable devices, health monitoring systems, and wearable devices. The methods of vibration-to-electric energy conversion can be included in the following categories: electromagnetic, electrostatic, and piezoelectric. Among various techniques of vibration-based energy harvesting, piezoelectric transduction method has received the most attention due to the large power density of the piezoelectric material and its simple architectures. In contrast to electromagnetic energy harvesting, the output voltage of a piezoelectric energy harvester is high, which can charge a storage component such as a battery. Compared to electrostatic …

Visual Saliency Analysis, Prediction, And Visualization: A Deep Learning Perspective, Ali Majeed Mahdi

Dissertations

In the recent years, a huge success has been accomplished in prediction of human eye fixations. Several studies employed deep learning to achieve high accuracy of prediction of human eye fixations. These studies rely on pre-trained deep learning for object classification. They exploit deep learning either as a transfer-learning problem, or the weights of the pre-trained network as the initialization to learn a saliency model. The utilization of such pre-trained neural networks is due to the relatively small datasets of human fixations available to train a deep learning model. Another relatively less prioritized problem is amount of computation of such …

Investigation Of Structural, Optical And Electronic Properties Of Modified Methylammonium Lead Iodide Perovskites, Rasanjali Jayathissa

Dissertations

Owing to their high-power conversion efficiency (PCE), easy processability, and low fabrication cost, organic lead halide perovskites (OLHP) are emerging as a most promising photovoltaic technology. However, toxicity of lead (Pb) is a major concern for further development. Therefore, it is essential to explore nontoxic metals to replace lead in these materials. In the current research work, nontoxic Mn²⁺, Na⁺ and Ba²⁺ are doped at 1, 5 and 10% mole concentrations to partially substitute Pb²⁺ in methyl ammonium lead iodide (CH₃NH₃PbI₃ or MAPbI₃) perovskite systems, and the effects …

Effects Of Two Types Of Creatine Feeding And Doxorubicin On Skeletal Muscle Apoptotic Markers, Zoltan A. Torok

Dissertations

Doxorubicin (Dox) is a widely used anthracycline antibiotic used to treat a number of hematological and solid tumor cancers. Dosage however, is limited due to its toxic effects in healthy tissues. Negative consequences include myotoxicity in skeletal muscle, which may limit mobility and activities of daily living. Doxorubicin increases the formation of reactive oxygen species, which triggers apoptosis in the tumor and healthy tissue. Skeletal muscle undergoes apoptosis in response to Dox treatment, via the activation of the cleaved caspase-3 and its downstream target, poly(ADP-ribose) polymerase. Creatine monohydrate (Cr), a naturally occurring chemical, when taken exogenously, can improve athletic performance. …

Experiences Of Secondary Social Studies Educators: The Redheaded Stepchildren Of Education, Rebecca N. Reed

Dissertations

The purpose of this multi-case phenomenological study is to understand the unique experiences of secondary social studies teachers. The number of participants was bound to six secondary social studies teachers from a public school district in a mid-Atlantic state and the experience of the researcher. Data was gathered through in-depth interviews using Seidman’s (2006) Three Step Interview Series and individual profiles were written. The phenomenological data analysis was guided by several methods including Hycner (1985), Moustakas (1994), and Seidman (2006). From the participants’ experiences several themes emerged: similarities in personal learning habits, a dislike for mandatory assessments and curriculum, and …

Providing Orientation And Mobility Support Via In-Person And Teleintervention Home Visits For Children With Visual Impairment In Early Intervention, Hong Bich Phangia Dewald

Dissertations

The purpose of this study was to show that teleintervention can be used to provide early intervention (EI) services, specifically orientation and mobility (O&M) support services, to very young children and their families in the sensory impairment field of blindness and visual impairment (BVI). Teleintervention has been shown to be an effective method of providing EI services to very young children and their families in the sensory impairment field of deaf and hard of hearing (DHH). However, there are no previous empirical studies that address the use of teleintervention in providing any specialized instruction/services to young children with BVI and …

A Comparison Of The Effects Of Sustained Silent Reading And Reciprocal Reading On Reading Motivation For Middle School Students With Reading Delays, Margaret Uwayo

Dissertations

Research suggests that secondary students with reading delays may lack reading motivation, which can be defined as the temporal reinforcement value of texts for an individual. However, reading motivation may be a critical component of their acquisition of reading proficiency. The purpose of the current study was to compare the effects of two research-based reading interventions - sustained silent reading and modified reciprocal reading - on the reading motivation of middle school students with reading delays. Participants were four 6th-grade students who were grouped into dyads in a reading intervention classroom. The primary dependent variable was book engagement under pairing …

The Impact Of Traumatic Brain Injury On Neuropsychological Functioning And Tau Accumulation Later In Life In Military Veterans, Lindsay Eatman

Dissertations

Abstract The following study examines aging veterans that experience a TBI while in service and

compares to older veteran without a history of TBI. The objective is to look at cognitive profile later in life for military veterans with moderate to severe TBI different and compared to older veterans with no history of TBI. Is there a difference in tau accumulations on neuroimaging in military veterans with moderate to severe TBI compared to older veterans without a history of TBI? What is the relationship between the cognitive profile and tau imaging correlates for military veterans with moderate to severe TBI …

Evaluation Of A Role-Playing Game To Improve Social Skills For Individuals With Asd, Kate A. Helbig

Dissertations

Autism spectrum disorder (ASD) affects one in 59 children (Centers for Disease Control and Prevention, 2018). Impairments in social communication and restricted and repetitive behaviorsare often associated with debilitating outcomes for individuals with ASD. Therefore, it is critical to identify successful treatments to address the social deficits characteristic of ASD. This study investigated the effects of a role-playing game (RPG) on social skill acquisition for individuals with ASD. The primary dependent variable was skill acquisition within the context of the RPG setting. Generalization of skill acquisition outside of the game-context and social functioning was also evaluated. Results indicated that the …