Digital Commons Network^™

A Mixed-Methods Study Of Applying Andragogical Practices To An Online Tesol Teacher Training Course At A Midwestern University, Daisy Anne Mary Skelly

Dissertations

Preservice teachers needed to be prepared to teach culturally and linguistically diverse learners, because English learners continued to enroll in new geographic areas. In response to the reauthorization of the federal Elementary and Secondary Education Act, requirements for teaching culturally and linguistically diverse students were added to teacher certification programs at the state level. Universities offering teacher certification programs addressed new program requirements in different ways, including adding competencies to existing courses or creating new courses. The purpose of this mixedmethods study was to investigate the knowledge, pedagogical skill, and self-efficacy levels of preservice teachers and their perceptions of English …

A Framework For Personalized Content Recommendations To Support Informal Learning In Massively Diverse Information Wikis, Heba M Ismail

Dissertations

Personalization has proved to achieve better learning outcomes by adapting to specific learners’ needs, interests, and/or preferences. Traditionally, most personalized learning software systems focused on formal learning. However, learning personalization is not only desirable for formal learning, it is also required for informal learning, which is self-directed, does not follow a specified curriculum, and does not lead to formal qualifications. Wikis among other informal learning platforms are found to attract an increasing attention for informal learning, especially Wikipedia. The nature of wikis enables learners to freely navigate the learning environment and independently construct knowledge without being forced to follow a …

Beyond Curriculum: Information Literacy, Librarianship, And The Role Of The Faculty At A Rural Community College In Missouri, Michelle A. Lane

Dissertations

This case study was designed to evaluate faculty perceptions of teaching information literacy within the general education curriculum, the level of collaboration between faculty and library staff, and challenges regarding instruction of information literacy at a community college in Missouri. Using an adapted survey from a 2014 study by Dr. Sharon Weiner of Purdue University, faculty were asked to provide their current views regarding instruction of information literacy at the Missouri institution. Additionally, archival data provided by the institution were analyzed using triangulation to establish a baseline regarding the best path forward to improving instruction, assessment, and student learning. While …

A Black African Teacher’S Experiences In America: Examining The Lived Experiences Of A Black African Teacher Working In A Midwestern Public School, Valentine Malumbila

Dissertations

Using sociocultural theoretical approach, intersectionality of race, Critical Race Theory, and Bakhtin’s authoritative and persuasive discourse as a theoretical framework, this study explores the various diversities that I encountered as a Black African working and living in America. The diversity that I, like many other Black African immigrants in America, suffer results from culture shock due to lack of culture capital to comprehend and make sense of my surroundings. The lack of culture capital left me exposed to me some degrees of ethnic profiling, isolation and loneliness, and grieving due to loss of family and things that mattered the most …

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 …

Chemical Synthesis Of Oligosaccharides From Human Milk, Mithila Dulanjalee Bandara Weerasooriya Mudiyanselage

Dissertations

Human milk oligosaccharides (HMO) are a family of structurally related glycans that are highly abundant in breast milk. Oligosaccharide fraction is the third largest solid component in human milk after lactose and lipids. There is an accumulating evidence that HMO can provide significant benefits to the breast-fed infants. However, understanding of the exact HMO functions is still incomplete due to the lack of individual compounds in sufficient quantities. Therefore, development of expeditious strategies for the chemical synthesis of HMO has been increasingly important. Among all the methods available for oligosaccharide synthesis, armed-disarmed strategy introduced by Fraser-Reid is based on chemoselective …

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 …

Students Of Black Or African American Ancestry In Grades 10th -12th Perceptions Of Their Schooling Experiences, Annette Renee Kennedy

Dissertations

California continues to tackle blatant racist acts within school systems across the state as recent headlines read, “Deeply offensive blackface video of California high school student sparks backlash” (Yancey-Bragg, Guynn, & Rhor, 2019, n.p.) and “Four teachers and their principal placed on leave after cheerfully posing for photo with noose” (Lunning, 2019, n.p.). Gaining a greater awareness of the non-headlining actions that take place on a day-to-day basis that have an equally powerful adverse effect on the school experiences of black learners was the focus of this study. Microaggressions are “subtle, stunning, often automatic, and non-verbal exchanges which are put …

Multi-Tiered System Of Support In California Rural School Settings, John P. Schilling

Dissertations

Rural schools face a different set of challenges that most urban school do not,

such as geographical proximity to qualified staffing, educational and student resources, budgets based upon a smaller student population, access technology and isolation. The purpose of the research was to examine how rural schools and rural school leaders are confronting the challenge of implementing MTSS with limited resources. The researcher used the lens of implementation science as a methodological framework for examining the implementation of MTSS. The researcher used a mixed method design to collect survey data from thirty-eight rural school educators and to collect data from …

Evaluation Of Reasons That May Affect Whether Academically Capable Females Choose To Major In Stem, Kerri Alexander Adkins

Dissertations

The purpose of this research was to study the reasons why academically capable females choose to pursue majors in STEM (science, technology, engineering, and math) fields. A mixed-methods approach using focus groups and a survey were used. Data were gathered from the focus group sessions and used to develop the survey that was then validated and checked for reliability. After some edits, the survey was administered to female freshmen attending Western Kentucky University. Unfortunately, all female students who completed the survey except one indicated they were pursuing STEM majors.

The results from this study suggest that the reasons surrounding the …

Factors Influencing Hispanic Soldiers Seeking Treatment For Alcohol Abuse : Secondary Analysis Of The Army Study To Assess Risk And Resilience Of Servicemembers (Starrs), Karina L. Bocanegra

Dissertations

This study examined factors that influenced whether Hispanic soldiers will elect to seek treatment for alcohol abuse. The data for this study were collected using archival data from the Army Study to Assess Risk and Resilience in Servicemembers (STARRS) survey conducted between the years 2011 and 2013. The STARRS dataset consisted over 21,000 surveys but for this study the sample size was specific to Hispanic soldiers wi th alcohol abuse (n= 917). The impact of seven independent variables on the dependent variable of treatment seeking was examined in the final statistical model. The seven independent variables examined were pri mary …

Factors That Contribute To Anticipated Turnover Among Civilian Registered Nurses Employed In United States Army Hospitals, Carol Ann Huebner

Dissertations

In this study, selected factors believed to influence anticipated turnover among civilian registered nurses employed in Army hospitals were examined. Based on a theoretical model developed from existing models of nursing turnover, independent variables were clustered into three groups: individual factors (age, education, tenure, kinship responsibility); growth need strength, initial expectations of tenure, and career intentions; and perceptions of contextual factors (workload, group cohesion, instrumental communication, job characteristics, external and internal labor market, and pay satisfaction). The theoretical model proposed that independent variables influenced the dependent variable which was anticipated turnover, either directly or indirectly through job satisfaction.

The Experience Of Cognitive Change In Women With Breast Cancer Following Chemotherapy, Mary Louise Kanaskie

Dissertations

Change in cognitive function is one side effect of chemotherapy that has been reported in some breast cancer survivors. Alarming reports indicate that between 16 to 50 percent of women receiving chemotherapy for breast cancer experience symptoms of cognitive impairment. These symptoms include subtle changes in memory, concentration, and some higher order processes that include psychomotor speed and executive functioning. In addition, it has been reported that these symptoms may persist even years after completion of treatment. Research is limited that has explored the lived experience of the phenomenon of chemotherapy-related cognitive change in breast cancer survivors.

The purpose of …

Minority Students In Stem Careers In The U.S. – The Role Of Ap Calculus, Kendall Coleman

Dissertations

“The number of native-born S&E [science and engineering] graduates entering the workforce is likely to decline unless the nation intervenes to improve success in educating S&E students from all demographic groups, especially those that have been underrepresented in S&E careers” (National Science Board [NSB], 2003, p. 13). More than a decade ago, the National Science Board (NSB) sounded an alarm regarding the projected decline in native-born science and engineering graduates with the aim of driving strategic fundamental changes. There is limited evidence that the NSB’s prognostication is actively being addressed. Approximately 81% percent of all full-time graduate students in U.S. …

Developmental And Sex Modulated Neurological Alterations In Autism Spectrum Disorder, Azeezat Azeez

Dissertations

Autism Spectrum Disorder (ASD) was first described in 1943 by Dr. Leo Kranner in a case study published in The Nervous Child. It is a neurodevelopment disorder, with a range of clinical symptoms. According to the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), used by clinicians to diagnose mental disorders, a child needs to have persistent social deficits, language impairments, and repetitive behaviors, that cannot be explained by neurological damage or intellectual disability. It is known that children diagnosed with ASD are often are developmentally delayed therefore alterations in the typical developmental trajectory should be a major factor in …

Modelling In Vitro Dissolution And Release Of Sumatriptan Succinate From Polyvinylpyrrolidone-Based Microneedles Aided By Iontophoresis, James Paul Ronnander

Dissertations

A novel dissolving microneedle array system is developed to investigate permeation of a sumatriptan succinate formulations through the skin aided by iontophoresis. Three formulations consisting of hydrophilic, positively charged drug molecules encapsulated in a water-soluble biologically suitable polymer, polyvinylpyrrolidone (PVP), have been accepted by the U.S. Food and Drug Administration (FDA). The microneedle systems are fabricated with 600 pyramid-shaped needles, each 500 µm tall, on a 0.785-cm² circular array. In vitro transdermal studies with minipig skin and vertical Franz diffusion cells show > 68% permeation of sumatriptan over a 24-hour period. A combination of microneedle and electrical current density ranging …

Effects Of Electro-Osmotic Consolidation Of Clays And Its Improvement Using Ion Exchange Membranes, Lucas Martin

Dissertations

Electro-osmosis is an established method of expediting consolidation of soft, saturated clayey soils compared to commonly used methods, such as preloading with wick drains. In electro-osmotic consolidation a direct current (DC) is applied via inserted electrodes. This causes hydrated ions in the interstitial fluid to migrate to oppositely charged electrodes. Because the clay particles have a negative surface charge, the majority of ions in the interstitial fluid are positively charged. Therefore, the net flow will be towards the negatively charged electrode (cathode), where the water can be removed and thus consolidation is achieved. Certain problems, such as pH changes in …

Engineering Of Escherichia Coli 2-Oxoglutarate Dehydrogenase Complex With Mechanistic And Synthetic Goals, Joydeep Chakraborty

Dissertations

The Escherichia coli 2-oxoglutarate dehydrogenase complex (OGDHc) compromises multiple copies of three enzymes - 2-oxoglutarate dehydrogenase (E1o), dihydrolipoyl succinyltransferase (E2o), and dihydrolipoyl dehydrogenase (E3). OGDHc is found in the Krebs cycle and catalyzes the formation of the all-important succinyl-Coenzyme A (succinyl-CoA). OGDHc was engineered to understand the catalytic mechanism and optimized for chemical synthetic goals.

Succinyl-CoA formation takes place within the catalytic domain of E2o via a transesterification reaction. The succinyl group from the thiol ester of S8-succinyldihydrolipoyl-E2o is transferred to the thiol group of CoA. Mechanistic studies were designed to investigate enzymatic transthioesterification. His375 and Asp374 was shown to …

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 …

Optimal Sampling Paths For Autonomous Vehicles In Uncertain Ocean Flows, Andrew J. De Stefan

Dissertations

Despite an extensive history of oceanic observation, researchers have only begun to build a complete picture of oceanic currents. Sparsity of instrumentation has created the need to maximize the information extracted from every source of data in building this picture. Within the last few decades, autonomous vehicles, or AVs, have been employed as tools to aid in this research initiative. Unmanned and self-propelled, AVs are capable of spending weeks, if not months, exploring and monitoring the oceans. However, the quality of data acquired by these vehicles is highly dependent on the paths along which they collect their observational data. The …

Applied Deep Learning In Intelligent Transportation Systems And Embedding Exploration, Xiaoyuan Liang

Dissertations

Deep learning techniques have achieved tremendous success in many real applications in recent years and show their great potential in many areas including transportation. Even though transportation becomes increasingly indispensable in people’s daily life, its related problems, such as traffic congestion and energy waste, have not been completely solved, yet some problems have become even more critical. This dissertation focuses on solving the following fundamental problems: (1) passenger demand prediction, (2) transportation mode detection, (3) traffic light control, in the transportation field using deep learning. The dissertation also extends the application of deep learning to an embedding system for visualization …

Data Multiplexing In Vector Acoustic Communication: System Design And Experiments, Erjian Zhang

Dissertations

Acoustic particle velocity channels, which are vector components of the acoustic field, have been recently explored to achieve communication purposes underwater. Vector sensors and transducers that can utilize acoustic particle velocity channels have compact multichannel designs, which are perfect for compact size underwater platforms. In this dissertation, an underwater acoustic multiple-input multiple-output (MIMO) communication system featuring orthogonal frequency division multiplexing (OFDM) and frequency shift keying (FSK) modulation is discussed. By transmitting multiple independent data streams simultaneously over several channels within the same bandwidth, the proposed MIMO system increases the transmission rate. A variety of components of the system such as …

Measurement Of Stresses And Their Effect On Transport In Thin Film Battery Electrodes, Subhajit Rakshit

Dissertations

At the moment, there is a significant push towards environmentally friendly energy production and gasoline-free transportation technologies. As a result, there is a renewed interest in energy storage devices such as lithium-ion batteries which will play a key role in providing energy storage capability for these applications. However, the current battery technology is reaching its limits and may not meet future energy storage demands. The increased demand and the limited lithium reserves in geographically remote areas of the earth will lead to higher cost of Li. The alternative battery technologies, such as sodium-ion batteries, are promising due to their low …

What Is The Bsn Student's Perception Of Why A Nursing Course Was Failed?, Amy M. Owen

Dissertations

Nursing student success is important to students, faculty, institutions of higher education, and the healthcare needs in Texas. Despite recent research showing that cognitive indicators can predict student success, the use of these factors has not significantly decreased the number of courses failed in nursing school. The purpose of this study was to explore the Bachelor of Science (BSN) nursing student perception of why a nursing course was failed.

Mathematical Literacy And Video Games, Craig Carrigee

Dissertations

Mathematical literacy refers to the ability of a person to be able to comprehend and conceptualize real-world data and mathematical situations to make informed decisions. Minimal research exists compared to the explosion of video games available to the public over the past two decades. This study investigates the relationships between playing video games and the ability of a person to answer real-world questions about mathematics as well as the person’s attitude toward mathematics, including their self-confidence, perceived value, enjoyment, and motivation. Previous studies have shown mixed results related to the influence of playing video games on cognitive math ability, but …

The Impact Of Houghton Mifflin Harcourt Read 180 Next Generation Program On Middle School Students With Disabilities, Katherine Arnold

Dissertations

The purpose of this study was to determine if reading performance of students with disabilities in grades six through eight improved as a result of one year implementation of READ 180 Next Generation program. Teacher experience, student gender and teachers’ overall satisfaction and how the READ 180 Next Generation program may influence the academic reading performance of students with disabilities. Reading performance was measured by the Georgia Milestones assessment and Houghton Mifflin Harcourt Reading Inventory.

Research findings show no significant differences in sixth, seventh, and eighth grade participants after one year of implementation of READ 180 Next Generation program. A …

Morphological Study Of Voids In Ultra-Large Models Of Amorphous Silicon, Durga Prasad Paudel

Dissertations

The microstructure of voids in pure and hydrogen-rich amorphous silicon (a:Si) network was studied in ultra-large models of amorphous silicon, using classical and quantum- mechanical simulations, on the nanometer length scale. The nanostructure, particularly voids of device grade ultra-large models of a:Si was studied, in which observed three-dimensional realistic voids were extended using geometrical approach within the experimental limit of void-volume fractions. In device-grade simulated models, the effect of void morphology; size, shape, number density, and distribution on simulated scattering intensities in small- angle region were investigated. The evolution of voids on annealing below the crystallization temperature …

Social-Emotional Difference Given Disability, Grade, And School-Wide Positive Behavioral Interventions And Supports, Edith A. Hayles

Dissertations

Students with disabilities as a group remain behind in academic achievement when compared to students without disabilities. Without the right school-based interventions, many students with disabilities will experience academic failure, disciplinary infractions, social isolation, self-doubt, school disengagement, and school dropout. Additionally, social-emotional intervention helps older students to improve executive functioning, develop self-regulation skills, and score better on achievement tests than the students not receiving any social-emotional programming. Moreover, students enrolled in schools that implement evidence-based educational interventions to facilitate students’ social-emotional competencies demonstrate more positive behaviors and social-emotional interactions. Students with social-emotional competencies have also described feeling safer and happier …

Enablers And Barriers Influencing African American Administrators’ Career Advancement At Predominantly White Institutions Of Higher Learning, Larry Webster

Dissertations

Many Predominantly White Institutions (PWIs) of higher learning do not have enough African Americans to lead their institutions in curriculum development, mentoring, recruitment, and governance (Reyes & Rios, 2005). Previous studies have attributed the modest representation of African American administrators to systemic barriers impeding the recruitment and advancement of African Americans at PWIs of higher learning (Jones, 2007; Perna, Gerald, Baum, & Milem, 2007). Ideally, the administrative leadership at PWIs of higher learning would adequately represent—ethnically and racially—its student population (Higgs, 2014). Levin, Walker, Haberler, and Jackson–Boothby (2013) suggest minimal progress in hiring African American administrators at PWIs of higher …

Social And Literacy Development Of School-Based Pre-Kindergarten Students, Stewart Smirthwaite

Dissertations

In order to meet the demands of college and career ready standards, students are expected to enter kindergarten knowing more than ever before. A need exists to examine data that provides evidence of desired social and literacy outcomes for students in kindergarten. In order to address the need for further study of school prekindergarten opportunities for young children, two different sets of data were collected, examined, and discussed. Literacy proficiency was measured by using data from the Mississippi K-3 Assessment Support System’s (MKAS²) Kindergarten Readiness Assessment (KRA). Social competence was measured using the Behavior Assessment System for Children, …