Digital Commons Network^™

Spatial Visualization Of High School Geometry Students, Jennifer Crissey

Dissertations

Spatial ability has been defined as “the innate ability to visualize that a person has before any formal training has occurred, i.e., a person is born with ability” (Sorby, 1999, p. 21) and is comprised of spatial orientation and spatial skills.Each of these facets are used in everyday life. High school students can enhance their spatial visualization skills through experiences and instruction. The purpose of this study was to test an intervention with the aim of increasing high school geometry students’ spatial visualization skills. The participants in this study were high school geometry students who were randomly placed in either …

"Innumerable Small Crafts": Maritime Work In The Estuarian Gulf, 1865-1900, Kevin Grubbs

Dissertations

Maritime historians have argued for a highpoint in maritime activity during the antebellum years. This peak was fed by Americans travelling on tall wooden sailing ships in international trade, in the whaling industries, and as members of the US Navy. The prowess of the American Merchant Marine faded quickly in the middle of the nineteenth century due to military losses during the American Civil War and due to the rise of steamships and steel hulls. This peak was followed by another lesser peak in the Twentieth Century as American ships caught up with technological changes. World War One provided a …

Early Carbonate Diagenesis Of The Miocene Dam Formation In Southwestern Qatar, Mohammed Al-Musawi

Dissertations

The timing and mechanisms of platform-scale dolomitization have been the subject of a long and contentious scientific debate known as the “dolomite problem.” The current study provides new insights through an investigation of the Miocene mixed carbonate-siliciclastics-evaporites Dam Fm in southwestern Qatar. Petrographical, mineralogical, and geochemical data are integrated from two research cores, the Dam-01 and Dam-02. The Dam Fm provides an ideal site to investigate dolomitization because these rocks are: (i) relatively young, (ii) have not been deeply buried, (iii) exhibit no evidence of diagenetic resetting, and (iv) characterized by alternating meter-scale depositional cycles that help constrain the relative …

Investigation Of Public Trust In Science In Connection With Views About Tentative Nature Of Science And Epistemological Beliefs, Asghar Pervaiz Gill

Dissertations

Trust in science is contested in everyday discourse and decision-making. Science education research and instruction must delve into and contribute to enhancing public trust in science. In this context, nature of science (NOS), and epistemological beliefs (EBs) emerge as closely related research areas highlighting the tentative NOS and uncertain aspects of knowledge, which can potentially influence trust in science. In a series of three interrelated studies, this research explores the public trust in science in relation to NOS views and EBs.

The first study emphasizes the role of science education in building trust among undergraduate chemistry students. It assesses the …

The Impact Of Perceived Principal Efficacy On Instructional Growth Through The Evaluation Protocol, John Richard Thompson Iii

Dissertations

The goal of this study was to investigate the impact of the perception of principal efficacy on instructional growth. The research questions examined what factors determine the perception of principal efficacy, how those perceptions impact instructional feedback during the evaluation process, and how they impact teacher growth. Data were collected in two stages. First, a survey was distributed to all K-12 teachers from a rural Southwest Missouri athletic conference. Participants completed the survey to provide qualitative information on the impacts of the perception of principal efficacy. Stage two consisted of follow-up interviews with the participants who indicated they were willing …

Examining Psychological Capital, Leader–Member Exchange, And Doctoral Student Connectedness, Regina Fowler Spiers

Dissertations

According to Young et al. (2019), doctoral programs in the United States in math, science, engineering, and humanities have a 36–51% attrition rate. Rigler et al. (2017) suggest that online doctoral students' attrition rates average between 50–70%. According to the International Affairs Office ([IAO]; 2020), the Doctor of Philosophy (PhD) is the highest academic degree in the United States. Universities award the degree to students who complete coursework to become a PhD candidate before completing and defending an independent research project, or dissertation (IAO, 2020). Relationship quality between PhD candidates and their supervisors is the most common research finding associated …

A Qualitative Study Of Redemptive Intelligence And The Leader’S Opportunity To Grow Performance Through Failure, Jonathan Eastman

Dissertations

This is a qualitative study about the redemptive intelligence of successful leaders and their opportunity to grow their personal and team performance through failure. Leaders who have a strong ability to leverage failures for improved performance for self and team, exhibit high levels of redemptive intelligence. Leaders who have a weak ability to leverage failures for improved performance for self and team, exhibit low levels of redemptive intelligence. After failure happens there are one of three paths that everyone will follow. They are first, a path to improved performance than what was experienced before the failure. Second, a return to …

Using Explicit Instruction And Frequency Building To A Performance Criterion To Teach Writing To College Students With Disabilities, Alyssa R. Mcelroy

Dissertations

Proficient writing skills are critical for academic, vocational, and social outcomes for individuals with autism spectrum disorder (ASD) and intellectual and developmental disabilities (IDD). However, many individuals struggle to develop proficient writing repertoires. Explicit Instruction (EI) and Frequency Building to a Performance Criterion (FPBC) are two effective teaching strategies. EI is comprised of clear, direct instructions and scaffolding to support a gradual release of responsibility from teacher to student, and follows a model, lead, test format. Once a skill is mastered, it should be built to fluency. FBPC is method that uses timed practice and feedback to build skills to …

Av Operation And Energy Efficiency Improved Through The Evaluation And Demonstration Of Av Sensor Technology, Nicholas Brown

Dissertations

The majority of states have passed legislation or have signed an executive order enacting safe testing, development, and deployment of level 4 and level 5 autonomous vehicles (AVs) in accordance with SAE standard J3016, which has led to an increase in the frequency of AV testing. The major driving force behind the push for AVs on public roads appears to be the increases the number of AVs on the road to decrease the chances of fatalities from distracted drivers. There are reports of disengagement from companies, which are required to report them to operate within California. The continuance of disengagements …

Oncolytic Tanapoxvirus Recombinants Expressing Mil-2, Flagellin-C, And Mccl2 Regress Human Cancer Xenografts In Immune Deficient Nude Mice And Immune Cell Reconstituted Balb/C Nude Mice., Michael Leonard Monaco

Dissertations

Tanapoxvirus (TPV) is a double stranded DNA virus from the genus Yatapoxvirus which has been engineered for the purpose of potentially treating a number of human cancers. Previous studies have shown TPV recombinants are capable of inducing tumor inhibition and even regression in athymic nude mice bearing human cancer xenografts of colorectal, melanoma and triple negative breast cancer (TNBC). However, TPV is host-restricted to humans and monkeys, including cancerous cells, which has provided a unique obstacle in its development as an oncolytic virus (OV). Namely, standard syngeneic mouse models cannot be used as test systems to evaluate TPV’s efficacy against …

A Multi-Objective Stochastic Programming Model For Resilient And Sustainable Supply Chains Under Uncertainty, Mohammad H. Majdfaghihi

Dissertations

Supply chain resilience (SCRES) and sustainable supply chain management (SSCM) have garnered significant attention in the field of Supply Chain Management (SCM) science. This heightened interest is largely attributable to the increasing frequency and severity of uncertainty and disruptions in global supply chains. Resilience is a beneficial approach to managing uncertainties and preparing for and mitigating the adverse consequences of Supply Chain (SC) disruptions. Sustainability is a key concept in SCM, driven by governmental regulations and heightened stakeholder and customer concerns for environmental and societal well-being. Studies on SCRES have traditionally focused on preparing for and reacting to disruptions and …

Sustainable Diamond-Like Carbon Fabricated Gravure Cylinders For Printing Fine Lines Of Electrodes And Graphic Structures, Chandramohan Seetharamiah Srinivasaraju

Dissertations

The main objective of this work is to evaluate the potential of Diamond-Like Carbon (DLC) as an alternative to chrome for use on gravure cylinders. DLC coatings consist of carbon atoms, arranged into a diamond-like structure that closely resembles that of natural diamond. In contrast to chrome, DLC is environmentally friendly. The focus of the study is to determine the viability of DLC as a substitute material for chrome to be used on gravure cylinders by determining key material properties and evaluating printing performance.

In the first research paper, four DLC variants (Standard DLC, A-DLC, S-DLC, and Organic Silica) and …

A Framework For Flourishing: Belonging, Confidence, And Connectedness In Academic Libraries, Kathleen Anne Langan

Dissertations

Academic libraries support students to be successful in their lives post-graduation by adopting more human-centered missions, visions, and measurable outcomes Support and success in this sense means developing programmatic outcomes that bolster the concepts of human flourishing – potential and purpose – that drive students toward happiness in their personal, professional, and civic lives. Students are more than learners, they are whole persons with social, emotional, and life-long goals that go beyond classroom learning, and academic performance. Currently, academic libraries rely heavily on measuring the value they add to institutions of higher education (IOHE) through library initiatives for academic support, …

Individual Differences In Numerical And Verbal Abstraction And The Ability To Draw Inferences From Text, Anna Christine Johnson

Dissertations

Abstraction may be defined as the process of isolating commonalities from a series of examples. Numerical estimates (e.g., Brown & Siegler, 2001), prototypes (e.g., Posner & Keele, 1968), and scripts (e.g., Schank & Abelson, 1977) are forms of abstract representations. Abstraction may differ across individuals, with some relying more on memorizing individual examples than on forming abstract representations, or vice versa. McDaniel et al. (2014) elucidated this abstractor vs. memorizer distinction and developed a function learning task to categorize individuals. Subsequent research has explored this distinction as it applies to transfer, the application of previously learned knowledge to new situations …

Student Desire To Stay In A Program: The Influence Of Faculty Caring And Cultural Identification With Faculty, Elizabeth Ann Cunniff

Dissertations

The Future of Nursing 2020-2030 report (National Academies of Sciences, Engineering, and Medicine, 2021) stated nurses should reflect the characteristics of the people they serve to ensure individuals receive culturally competent and equitable health care. Over the next decade and beyond, the U.S. population will become more racially and ethnically diverse, but the nursing workforce has not kept pace with the changing demographics (American Association of Colleges of Nursing, 2023). To increase diversity among nurses, nursing schools need more diverse graduates from prelicensure nursing programs, but attrition is greater among students with diverse racial, ethnic, and cultural backgrounds (Barbé et …

Synthesis Of Glucomannan-Xylan Composite Biofilms: Characterization And Applications For Food Packaging, Kholoud Al-Ajlouni

Dissertations

Scientists are most concerned about the need for green alternatives for efficient food packaging polymers to replace petroleum-based packaging products. The waste of corn cobs and the roots of the konjac plant contain hemicellulose, xylan and glucomannan respectively, and can be used to produce biofilms for food packaging.

The aim of these studies is to formulate biofilms from glucomannan-xylan blends that compete with petroleum-based plastic wrap. The biofilms must be strong, smooth, transparent, have a water vapor barrier, have the required mechanical properties and be cheap. Biofilms from glucomannan were stiff, lacked mechanical properties, and absorbed moisture. Therefore, it reacts …

The Effect Of Maternal Obesity On The Regulation Of Gene Expression And Cell Fate During Embryonic Cortical Neurogenesis, Thilina Thejinda Alawathugoda

Dissertations

Neurodevelopmental disorders have their roots in multifaceted origins that manifest during the earliest stages of embryonic growth, often linked to sophisticated gene regulation dynamics. A perturbed metabolic environment, specifically owing to maternal obesity, can lead to dyslipidemia, subsequently threatening the optimal development of the embryonic central nervous system. Growing evidence suggests that such metabolic irregularities during pregnancy can alter neurogenesis pathways, thus predisposing the developing fetus to neurodevelopmental disorders. One of the primary avenues through which these disruptions may occur is through alterations in histone modifications resulting from fluctuations in the expression of histone modifying enzymes or the availability of …

Maximising Captured Power And Battery Management For Heaving Wave Energy Converters, Omsalama Mubarak Mohamed

Dissertations

Sea waves are considered the most potent energy carriers among all sources of renewable energy. This research work is concerned with developingtechnologies to enhance performance and improve power capturing and conversion capabilities of a single heaving wave energy converter (WEC) actuated by a PMLG (Permanent Magnet Linear Generator). The objective of this dissertation is achieved by three techniques. The first one considers maximizing conversion between the mechanical and electrical powers. It is implemented by designing intrinsic resistance using a rapid procedure involving the mechanical and electrical models of the converter and considering its operating constraints. A robust PID (proportional – …

Experimental And Theoretical Investigations Of Novel 2d Magnet Heterostructures And Magnetic Thin Films, Stephen Hofer

Dissertations

Since the first usage of magnets as navigation tools, magnetism has been an integral part of human technology. As such, with increased demand for more sophisticated technologies, the need to understand magnetism and its applications has also increased. In modern times, the focus of new technologies is on scalability, or how things behave on the smallest scales. To this end it is necessary to understand the fundamental and practical behaviors of magnetic materials at this limit. Recent discoveries in the field of true 2D magnets and the field of topological matter demands investigation of the intersection between these two fields. …

A New Approach To Synthetic Image Evaluation, Majid Memari

Dissertations

This study is dedicated to enhancing the effectiveness of Optical Character Recognition (OCR) systems, with a special emphasis on Arabic handwritten digit recognition. The choice to focus on Arabic handwritten digits is twofold: first, there has been relatively less research conducted in this area compared to its English counterparts; second, the recognition of Arabic handwritten digits presents more challenges due to the inherent similarities between different Arabic digits.OCR systems, engineered to decipher both printed and handwritten text, often face difficulties in accurately identifying low-quality or distorted handwritten text. The quality of the input image and the complexity of the text …

Job Stress, Mentoring, Psychological Empowerment, And Job Satisfaction Among Nursing Faculty, Catherine Chung

Dissertations

The National League for Nursing (NLN) endorses mentoring throughout the nursing faculty career trajectory as the method to recruit nurses into academia and improve retention of nursing faculty within the academy (NLN, 2006). One way mentoring assists faculty is by easing socialization to the culture of the employing institution and decreasing faculty stress (Lewallen, Crane, Letvak, Jones, & Hu, 2003). Mentoring can also be a facilitating factor of an individual's psychological empowerment. Academia is an environment able to foster psychological empowerment, a state in which faculty may be self-directed, highly productive, confident, and find a meaningful connection to their work …

From Doubt To Degree: The Retention Of African-American Mother-Scholars, Tamala Y. Stallings

Dissertations

According to college student demographic data, the majority of undergraduate students are nontraditional. However a smaller portion of educational resources are allocated to retain nontraditional college students in comparison to traditional college students. An even smaller portion of resources are allocated for the retention of sub- populations of nontraditional college students, such as Mother-Scholars. Therefore it is imperative for postsecondary institutions to understand the needs of sub-populations like Mother-Scholars and adequately apportion resources to increase their retention.

Upon matriculation, Mother-Scholars encounter systemic barriers within their institutions that impede their college persistence. Furthermore, because of their intersectionality, Mother-Scholars have college experiences …

Ways To Prevent Moral Disengagement For Youtube Content Creators: The Role Of Empathy And Self-Compassion, Nathan Andrew Pennington

Dissertations

This study sought to assess the role empathy and self-compassion play in lessening the impact of stress and moral disengagement for digital entrepreneurs, specifically, YouTube content creators. The desire for status and the need for venture legitimacy within the content creation economy, while considered mostly positive traits, can be taken to the extreme, leading to a lack of empathy and self-compassion and even degradation and moral disengagement. The study utilized a mixed-methods approach, combining quantitative and qualitative data collection techniques. Quantitative data within the study provides statistical evidence of correlations and trends, while qualitative data discusses the perspectives and lived …

The Aftermath Of The First Children Of Brown: Stories Of Housing And Education Racial Disparities In St. Louis, Missouri 1950-1970, Benard Diggs

Dissertations

This study explores residential segregation in two prominently African-American neighborhoods in St. Louis. It is based on past and current scholarship and examines the impact of historical and current housing and educational policies, consequently creating persistent racial disparities. According to Rothstein (2017), past governmental influence played a significant role in creating what he calls government-sponsored urban ghettos in cities across the United States today. St. Louis has been a residentially segregated city for many years. This study looks at St. Louis-specific research about housing, patterns, educational outcomes, and neighborhood experiences of the interview participants. The responses given by the participants …

Expanding Community Capacity: Empowering Non-Clinical Gatekeepers To Respond To Persons In Suicide Crisis, Michael J. Polacek

Dissertations

Suicide is a leading cause of death and rates continue to rise despite focused efforts by policymakers. A family member, friend, or peer often plays a key role in initially identifying, rescuing, and then supporting ongoing recovery efforts of someone at risk for suicide. Preparation is provided through suicide prevention gatekeeper training such as QPR, yet this partner of direct professional service providers often lacks adequate support to effectively perform gatekeeper behaviors leading to the research question, "Does virtual café support effective gatekeeper behaviors?" The project uses a mixed-method approach to determine if a focused discussion group using The World …

Binding Interactions Of Biologically Relevant Molecules Studied Using Surface-Modified And Nanostructured Surfaces, Palak Sondhi

Dissertations

This research focuses on the field of surface nanobioscience, wherein different nanosurfaces that will be used as working electrodes in the electrochemical cell are manufactured and surface modified to understand the critical binding interactions between biologically significant molecules like proteins, carbohydrates, small drug molecules, and glycoproteins. This research is essential if we are to determine whether a synthetic molecule can serve as a therapeutic candidate or diagnose a disease in its early stages. In order to fully understand the binding interactions, the study begins with defining some of the fundamental concepts, principles, and analytical tools for biosensing.

Afterwards, we addressed …

Design Thinking’S Effect On Empathy Development In Middle School English- Language Arts, Kim Starkey

Dissertations

The purpose of this quantitative study was to explore the impact of Design Thinking on students' empathy development in middle school English Language Arts (ELA) classrooms. The study involved two middle school instructors with eight classes, implementing Design Thinking, Reader's Workshop, and traditional ELA curriculum in different combinations (n =102) and two control classes (n =27).

The Adolescent Empathy Measure (AMES) and rubrics for analyzing student writing samples were used to assess changes in empathy. The AMES was given before and after the interventions, and the writing samples were analyzed before and after the interventions as well. The findings indicate …

Mixed-Method Study Of Relationship Satisfaction Among African American Males With Or Without History Of Childhood Sexual Abuse, Sandra Webster Brown

Dissertations

Relationship satisfaction among African American males is an important and feasible topic and underrepresented among scholarly literature. The purpose of this study was to explore relationship satisfaction and experiences among African American males who may be impacted by history of childhood sexual abuse. The study was guided by the theoretical frameworks of family systems theory. Using a concurrent mixed-methods triangulation design, the researcher collected data quantitatively and qualitatively from an online survey. Data were collected from 43 African American males recruited from Black organizations in the United States. The qualitative data collected by written narratives from the men were used …

Biological Seawater Desalination Using Green Algae And Cyanobacteria, Abdul Mannan Zafar

Dissertations

Water shortage in many coastal parts of the world is reaching alarming situation, including the United Arab Emirates. Urbanization and rapid population growth are generating critical water demands with an increase in per capita consumption. Seawater is usually treated by membrane processes such as Reverse Osmosis (RO). However, this technology is energy intensive and generates excessive brine as a waste. The solution to this problem can be found in natural remediation techniques that can reduce salt concentration from seawater, such as halophytes. A salt-tolerant species can consume Na⁺ and Cl^- ions and increase cellular growth which is termed …

A Novel Multi-Model Patient Similarity Network Driven By Federated Data Quality And Resource Profiling, Alramzana Nujum Navaz

Dissertations

Smart and Connected Health (SCH) is revolutionizing healthcare by leveraging extensive healthcare data for precise, personalized medicine. At its core, SCH relies on the concept of patient similarity, which involves the comparative analysis of newly encountered patients with those who exhibit comparable similarities from the existing patient cohort. Yet, this approach faces significant challenges, including data heterogeneity and dimensionality. Our research introduces a multi-dimensional Patient Similarity Network (PSN) Fusion model tailored to handle both static and dynamic features. The static data analysis focuses on extracting contextual information using Bidirectional Encoder Representations from Transformers (BERT), while dynamic features are captured through …