Digital Commons Network^™

Predicting Attrition Among Human Anatomy And Physiology I Students In Community Colleges, Benjimen Sessums

Dissertations

Anatomy and Physiology (A&P) courses are offered at almost every postsecondary educational institution in the United States enrolling over 450,000 students each year across the United States with an overall attrition rate between 30-40%. Approximately 150,000 of these students will not be successful the first time they attempt A&P. This constitutes one of the highest attrition rates of all undergraduate degree courses with this size of yearly enrollment.

A&P courses often serve as gateway course required for the continuation and completion of several biological degree fields. Many health-related professional programs such as nursing, paramedicine, and other allied health vocations require …

The Effects Of Personalized Learning On Student Achievement, Keile Phillips

Dissertations

Although many studies have been conducted on personalized learning strategies, teacher attitudes and perceptions, and student engagement, few studies have focused on personalized learning and its impact on student achievement when compared to the traditional classroom. The purpose of this study was to determine if personalized learning increased student achievement in three school districts by analyzing student assessments for three consecutive school years. The study utilized data from three school districts located in Western Kentucky for the 2016-2017, 2017-2018, and 2018-2019 school years. The data were collected from Renaissance Learning for math and reading. In addition to examining the students’ …

Concurrent Study Of The Impact Of An Institutionalized Diversity Plan On The Perceived Sense Of Academic Achievement, Sense Of Belonging, And Program Completion Among African American Students In A Midwest Community College, Tyianna Thompson

Dissertations

This dissertation explored how an institutionalized diversity plan impacts perceived academic achievement, sense of belonging, and program completion among African American students. The concurrent mixed-methods methodology followed a single case study design to explore the impact of an institutionalized diversity plan in a Midwest community college. Both quantitative and qualitative data were gathered and analyzed. The results of this study revealed that although diversity and inclusion programs are somewhat effective in higher education, more needs to be done to satisfy the needs of minority students in higher education. According to the findings of this study, most students felt a sense …

Administrative Leaders' Viewpoints About The Significance Of Art Education In Schools, Jennifer Luckett

Dissertations

The value of art education and people’s perspective of its value have been subjects of research throughout the years. Art programs are usually the first to be eliminated when there are budget cuts in the public-school systems. This study examines policy, history, and teachers’, parents’, and students’ viewpoints of the value of art education. It also analyzes the researched value that an art education provides. As there is little to no research on administrative leaders’ viewpoints, this research study utilized Q-methodology to determine administrators’ viewpoints on their personal value of art education. The main goal of this research was to …

Technology Integration In School-Based Physical Activity, Taemin Ha

Dissertations

The purpose of this study was to understand the current practice of technology use for physical activity promotion in K-12 schools in the United States by conducting two studies. Using a quantitative research design, study one aimed to identify the current practice of technology use in school-based physical activity promotion. Study two investigated what attributes contribute to the use of technology in schools for physical activity facilitation and promotion. A sequential explanatory mixed-methods study design was used for study two, and Rogers’ (2003) diffusion of innovations theory served this study as a theoretical framework. A total of 367 registered Active …

Synthesis, Sintering, And Electronic Conductivity Studies Of Medium- And High-Entropy Perovskite Oxides, Sai Ram Gajjala

Dissertations

The application of the entropy concept to stabilize oxide systems opens the possibility of discovering new materials with unique structural and functional properties. High-entropy alloys and oxides, which are based on the entropy stabilization concept and composed of multi-principal elements, have the potential to tailor structural and functional properties to meet specific needs. The study of lanthanum-based perovskite materials that benefit from the entropy stabilization approach is a promising area of research.However, the inherent randomness of multi-principal elements presents new challenges, making it difficult to predict their behavior. To understand these difficulties, we have initiated a methodical investigation of La-based …

An Examination Of Support Provided To Students Attending Two Performing Colorado High Schools With A Significant Percentage Of Students Experiencing Poverty, Rebecca Albert Vollrath

Dissertations

Students living in poverty are noted to experience a variety of barriers, which include literacy gaps (Buckingham et al., 2013), lower reading achievement entering high school (Reardon et al., 2013), lower graduation rates (National Center for Education Statistics, 2016), higher incidences of learning disabilities and behavior problems (Morgan et al., 2009), and other negative psychological and educational outcomes that could affect academic achievement (Mistry et al., 2009). The aforementioned items have created barriers to learning and achievement while high school leadership across the United States have worked to support all students at school. Colorado high schools generally have used Multi-Tiered …

Characteristics Of Science, Technology, Engineering, And Mathematics Mentoring Relationship Practices In Secondary Education Settings: A Case Study, Bonnie Jeanne Palmer

Dissertations

The use of science, technology, engineering, and mathematics (STEM) mentors in public school systems and other organizations has grown comparably with our economy’s increasing demand for STEM industry professionals. However, inspiring students to pursue STEM careers by using STEM industry professionals as mentors requires an understanding of effective mentor practices. Limited research exists that focuses on the mentoring practices students respond to as they make academic and career plans. The purpose of this study was to investigate and identify practices that promote STEM careers among youth. The study sought to answer the question, “What STEM mentor practices, behaviors, and roles …

Course-Based Undergraduate Research Experiences: Science Practices And Science Identity, Alaina Buchanan

Dissertations

Course-Based Undergraduate Research Experiences (CUREs) have become more commonly incorporated in laboratory courses in undergraduate education. Because CUREs incorporate research within the context of a course, the benefits of mentored research (self-efficacy, science identity, persistence, and more) are extended to each student enrolled. CUREs are designed with five key components: discovery, relevance, iteration, collaboration, and science practices. However, the term science practices is broad and includes a diversity of student activities which can make it difficult to compare student outcomes across different CUREs. The first part of this work reviews the components and specific science practices included in all CUREs …

A Portrait Of Culturally Responsive, Socially Just School Leadership: A Latino Critical Theory Student Perspective, Jennifer Ruth Crill

Dissertations

As the student demographics in classrooms across America shift to become more ethnically diverse, schools are examining their practices in supporting how students are prepared for college and career. This support includes the introduction of innovative learning environments aimed to provide students with opportunities to explore career pathways. The purpose of this qualitative study was to illuminate the leadership skills, attitudes, and knowledge that Latina/o/x students within an Innovative Learning Environment perceive as supporting students. This study examined how Latina/o/x students perceive the attitudes, skills, and knowledge of culturally responsive socially just school leadership in innovative learning environments. Through the …

Factors That Affect The Motivation And Satisfaction Of Emiratis Workforce In Critical And Key Positions: The Case Of The Uae Media Sector, Afra Sulaiman Al Mheiri

Dissertations

With the economic boom of the UAE in recent years, the country has seen a major change in terms of employment of Emiratis and expatriates and influx of foreign job-seekers into UAE market. Despite the federal government's continued efforts to promote Emiratization and create a favourable business environment that attracts Emirati job-seekers, a slight improvement in the employment situation of Emirati workers, especially in key positions in private media sector. Although the UAE media sector plays a key role in reshaping the sociocultural landscape and is used as a soft tool of public diplomacy, it is slow in achieving Emiratization …

A Research On Automatic Hyperparameter Recommendation Via Meta-Learning, Liping Deng

Dissertations

The performance of classification algorithms is mainly governed by the hyperparameter configurations deployed. Traditional search-based algorithms tend to require extensive hyperparameter evaluations to select the desirable configurations during the process, and they are often very inefficient for implementations on large-scale tasks. In this dissertation, we resort to solving the problem of hyperparameter selection via meta-learning which provides a mechanism that automatically recommends the promising ones without any inefficient evaluations. In its approach, a meta-learner is constructed on the metadata extracted from historical classification problems which directly determines the success of recommendations. Designing fine meta-learners to recommend effective hyperparameter configurations efficiently …

Let’S Take This Outside: Utilizing Outdoor Classrooms As A Response To The Coronavirus-19 Pandemic, Cortney Leigh Lamb

Dissertations

The worldwide school closures due to the Coronavirus (COVID)-19 pandemic that began in the spring of 2020 caused a disruption to educational systems (Bao et al., 2020; Engzell et al., 2021; Masonbrink & Hurley, 2020; Munir, 2021; United Nations International Children’s Emergency Fund, 2020). The pandemic created a dilemma in which school leaders around the world and in the United States had to make challenging decisions about how to open schools in the fall of 2020 and how to best educate students (Honein et al., 2021). The majority of school leaders choose to reopen schools in the fall of 2020 …

Intelligent And Explainable Solution To Predict Infant Birthweight And Preterm Birth In The United Arab Emirates, Wasif Khan

Dissertations

Adverse pregnancy outcomes such as Low Birth Weight (LBW) and Preterm birth (PTB) are complex pregnancy challenges that can lead to high perinatal mortality and long-term morbidity for infants. Early prediction of such adverse outcomes can be useful for averting catastrophic outcomes for the mother and her baby. With advances in machine learning (ML)-based algorithms, several models have been proposed for both PTB and LBW predictions. However, the risk factors associated with these outcomes are still unknown, particularly in the United Arab Emirates (UAE). Furthermore, existing ML-based prediction models work in a black-box manner and lack proper interpretations for clinicians, …

Electrodialysis Process For The Simultaneous Treatment Of Reject Brine And Capture Of Carbon Dioxide, Jawad Mustafa

Dissertations

Desalination plants are highly efficient in producing desalinated water for potable applications. However, the process also generates reject brine, which is highly concentrated saline water. In order to produce 1 liter of potable water using desalination, approximately 1.5 liters of reject brine is generated. The disposal of reject brine presents a significant challenge for the desalination industry. Typically, this waste product is discharged into the sea, causing environmental damage, and polluting marine life. Moreover, certain countries heavily rely on desalination to meet their potable water needs, which results in the emission of greenhouse gases. As desalination plants consume a significant …

Counter Narratives: A Phenomenological Study Of Inner-City Catholic School Teachers, Staci Wadlington

Dissertations

Educational experiences of children can have positive or negative impacts on their future. This study used a method, counter-narratives, identified by Critical Race theorists to document the shared experiences of inner-city Catholic school educators during one of the most important time periods of education in our country, post Brown v Board of Education (1954). Using a qualitative and phenomenological approach, the researcher interviewed educators from an inner-city Catholic school to investigate their experiences during the post-restructuring phase, which essentially segregated a select group of schools from the larger archdiocese school system. These targeted schools were renamed, provided an alternate governing …

The Influence Of Diamine Curing Additives On The Network Architecture Of Phthalonitrile Thermosetting Polymers, Tyler J. Richardson

Dissertations

Phthalonitrile monomers undergo diamine-promoted polymerization by a complex reaction mechanism involving two competitive cure pathways, forming two primary network architectures: linear polyisoindoline chains and branched triazine crosslinks. The influence of the diamine curing additive on the polymerization pathway, and the influence of the resulting network architectures on cured network properties, have not been adequately explored within the phthalonitrile field. Two structurally different diamine curing additives, bis[4-(3-aminophenoxy)phenyl] sulfone (mBAPS) and 1,3-phenylenebis((4-(4-aminophenoxy)phenyl)methanone) (AEK-134), were studied for the polymerization of resorcinol phenylphosphate phthalonitrile (RPPhPN), where the influence of diamine structure and concentration on the polymerization behavior, network architecture, and bulk thermal and thermomechanical …

Do Allyship And Motivation Influence Women’S Cognitive Functioning And Self-Regulation After Witnessing Sexism?, Christina Garasky

Dissertations

Prior research shows the effects of sexism can accumulate over time, resulting in severe negative, cognitive, affective, motivational, and physiological consequences for women; however, most research focuses on the consequences of being a direct target of sexism, and the cognitive and motivational consequences of being a witness of sexism have not yet been fully explored. Additionally, while it is thought that allyship can help mitigate the consequences of sexism, minimal research has tested this relationship. It was proposed that shifts in reactive approach motivation (RAM); aimed to protect against anxiety and negative affect, may direct attention away from goal-oriented behaviors, …

Loss Scaling And Step Size In Deep Learning Optimizatio, Nora Alosily

Dissertations

Deep learning training consumes ever-increasing time and resources, and that is
due to the complexity of the model, the number of updates taken to reach good
results, and both the amount and dimensionality of the data. In this dissertation,
we will focus on making the process of training more efficient by focusing on the
step size to reduce the number of computations for parameters in each update.
We achieved our objective in two new ways: we use loss scaling as a proxy for
the learning rate, and we use learnable layer-wise optimizers. Although our work
is perhaps not the first …

Topological Data Analysis Of Weight Spaces In Convolutional Neural Networks, Adam Wagenknecht

Dissertations

Convolutional Neural Networks (CNNs) have become one of the most commonly used tools for performing image classification. Unfortunately, as with most machine learning algorithms, CNNs suffer from a lack of interpretability. CNNs are trained by using a training data set and a loss function to tune a set of parameters known as the layer weights. This tuning process is based on the classical method of gradient descent, but it relies on a strong stochastic component, which makes the weight behavior during training difficult to understand. However, since CNNs are governed largely by the weights that make up each of the …

A Delphi Study Of Possibilities Of Learning By 2035: Identify And Describe The Educational Changes For High Schools In California That Are Possible And Probable By 2035 As Perceived By A Panel Of Experts, Guillermo Lopez

Dissertations

Purpose: The purpose of this Delphi study was to identify and describe the educational changes for high schools in California that are possible and probable by 2035 as perceived by a panel of experts. In addition, the purpose was to determine the level of desirability of educational changes identified as probable by a panel of experts. Finally, the purpose was to describe the actions necessary to promote the desirable educational changes by 2035 as perceived by the expert panel.

Methodology: The Delphi method was used as a mixed methods approach to build consensus among experts. Fifteen experts from diverse secondary …

Phenomenological Study: The Perceived Impact Of The Intersectional Barriers Created By Gender And Race On African American Females’ Advancement To A Senior Executive Service Within The Federal Government, Nicole Oliver

Dissertations

Purpose. This phenomenological study aimed to investigate the perceived impact of intersectional barriers created by gender and ethnicity on the advancement of African American females to the Senior Executive Service (SES) corps of the United States federal civil service. Additionally, the study sought to identify strategies used by African American females to overcome these barriers because of intersectionality and advance to the SES corps of the United States federal civil service.

Methodology. This qualitative phenomenological study used a convenience sampling method to select eight African American females who have advanced to an SES position in the Washington, DC metropolitan area. …

Synthesis And Evaluation Of Biologically Active Phosphorous Heterocycles And Lipid A Antagonist Compounds, Saroj Kafle

Dissertations

Cyclophostin and cyclipostins are naturally occurring organophosphates with common structural core units and different phosphate ester substituents. Cyclophostin is a cyclic phosphate triester with a chiral center at phosphorous and C-3a carbon atom while the cyclipostins have characteristic alkyl substituents with varying chain lengths at the phosphate center. Long-chain substituted monocyclic phosphate (2b) and phosphonate (2a) analogs of cyclophostin and cyclipostin are promising inhibitors against serine hydrolases acetylcholinesterase with an IC₅₀ in the nanomolar range.

Biologically active β-lactones and lactams owe their activity, in part, to ring strain. The ring opening of β-lactones and lactams …

Nursing Faculty Perceptions Of Stress, Coping, And Intent To Leave The Profession In The Ongoing Covid-19 Pandemic: A Quantitative Study, Lynlee Morgan

Dissertations

The COVID-19 pandemic impacted all of society to varying degrees; this impact was especially true in higher education due to an overnight transition to distance learning and incessant pivots to meet new guidelines and overcome obstacles. Nursing faculty were significantly impacted due to the responsibility of producing safe, qualified, competent practitioners to provide care in the clinical setting. The limitations in or exclusions from clinical experiences combined with the fact that faculty were managing personal concerns and had never encountered these unprecedented conditions exacerbated the challenge of preparing new nurses. This study was critical due to the faculty role and …

Zonality In Graphs, Andrew Bowling

Dissertations

Graph labeling and coloring are among the most popular areas of graph theory due to both the mathematical beauty of these subjects as well as their fascinating applications. While the topic of labeling vertices and edges of graphs has existed for over a century, it was not until 1966 when Alexander Rosa introduced a labeling, later called a graceful labeling, that brought the area of graph labeling to the forefront in graph theory. The subject of graph colorings, on the other hand, goes back to 1852 when the young British mathematician Francis Guthrie observed that the countries in a map …

High-Dimensional Variable Selection Via Knockoffs Using Gradient Boosting, Amr Essam Mohamed

Dissertations

As data continue to grow rapidly in size and complexity, efficient and effective statistical methods are needed to detect the important variables/features. Variable selection is one of the most crucial problems in statistical applications. This problem arises when one wants to model the relationship between the response and the predictors. The goal is to reduce the number of variables to a minimal set of explanatory variables that are truly associated with the response of interest to improve the model accuracy. Effectively choosing the true influential variables and controlling the False Discovery Rate (FDR) without sacrificing power has been a challenge …

Research Training And Certification Protocol For Medical Students, Michelle Arisleida Padley

Dissertations

Early and frequent exposure to research is imperative to initiating and sustaining long term for medical student research interest. The attitude and approach of physician mentors has been demonstrated to have a substantial effect on student perceptions of research involvement. The purpose of this study is to determine best practices for assessing student perceptions for a research certification program. An additional long-term objective is to utilize these findings to help maintain interest in research throughout their medical careers. Research is an essential aspect of the prestige of medical schools, and the benefits of academic research institutions have numerous facets, including …

A Mixed-Methods Investigation Of How Student Goal-Setting For Improved Learner Behaviors Affects Intermediate Elementary Academic Achievement, Meghan Mcnulty

Dissertations

Education in the United States has changed significantly since its onset. Due to these changes, there is an increased need for social-emotional skills for success in school and in life. The study centered on how focusing intermediate elementary school students on improving their behavior could influence their academic achievement. Though there is much literature on social-emotional skills, self-efficacy, student agency, goal-setting, and academic achievement, few researchers have conducted studies to connect these concepts. In this study, students assessed their current behavioral skills using the mySAEBRS (Illuminate Education, n.d.). Using the results, students set improvement goals in one of three behavioral …

Statistical Clustering Of Networks With Additional Information, Paul Atandoh

Dissertations

As the online market grows rapidly, many companies and researchers are interested in analyzing product review dataset which includes ratings and text review data. In the first project, we mainly focus on analyzing the text review data. In the current literature, it is common to use only text analysis tools to analyze review dataset. But in our work, we propose a method that utilizes both a text analysis method such as topic modeling and a statistical network model to build network among individuals and find interesting communities. We introduce a promising framework that incorporates topic modeling technique to define the …

Using Visual Imagery To Develop Multiplication Fact Strategies, Gina Kling

Dissertations

The learning of basic facts, or the sums and products of numbers 0–10 and their related differences and quotients, has always been a high priority for elementary school teachers. While memorization of basic facts has been a hallmark of elementary school, current recommendations focus on a more nuanced development of fluency with these facts. Fluency is characterized by the ability to demonstrate flexibility, accuracy, efficiency, and appropriate strategy use. Despite recommendations to focus on strategy use, there is insufficient information on instructional approaches that are effective for developing strategies, particularly for multiplication facts. Using visual imagery with dot patterns has …