Digital Commons Network^™

Investigating The Relationship Between Departmental Support Structures, Self-Efficacy And Intention To Persist: An Examination Of Students' Experience In 19 Physics Graduate Programs Across The United States, Diana Sachmpazidi

Dissertations

Science, Technology, Engineering, and Mathematics (STEM) graduate programs experience consistently high attrition rates. Moreover, persistent disparities exist in racial and gender representation. Women and People of Color are significantly underrepresented and have higher attrition rates than men and white and Asian American students. To date, little work is done to understand graduate student attrition or persistence. There is also a lack of information regarding the causes of demographic disparities in attrition. Most past studies in this context have focused on students' attributes, undergraduate preparation, and mentoring relationships. Moreover, student self-efficacy is a contributing factor for undergraduate student retention. Yet, there …

Transdiagnostic Classification Of Behavior In Childhood: Profile Analysis And Interrater Stability, Gary Rempe

Dissertations

There is growing concern among both researchers and practitioners that mainstream psychopathological classification schemes inadequately meet the needs of individuals seeking treatment for mental illness. Recent efforts in childhood psychopathology have sought to derive new diagnostic subgroups that are less susceptible to the heterogeneity and comorbidity issues that have been reported with categories specified in more recent versions of the diagnostic and statistical manual of mental illness. These transdiagnostic subgroups are generated by using unsupervised machine-learning algorithms that separate cases into homogenous groups with information from multiple continuous indicators. This dissertation seeks to expand on this work by exploring natural …

I Don’T Have To Stay Here! The Experiences Of Black Women, Higher Education Administrators Who Experienced A Professional Transition And/Or Promotion To A Historically White Institution During The Coronavirus Pandemic, Margaret Littona Sebastian

Dissertations

Through the transformative research paradigm, the critical race feminism theoretical framework and based on Bridges’ (1980) transition theory, the author explored the experiences of 20 Black women in entry-, mid-, and senior-level higher education administrative positions with a professional transition and/ or promotion to a predominately and historically White institutions during the COVID-19 pandemic. This study highlighted the experiences of 20 Black women higher education administrators who shared their experiences through two virtual interviews and created visual maps to explore their journey working in higher education in the United States. The study used portraiture to focus on four aspects of …

Student And Teacher Perceptions Of College Readiness In Myanmar: A Mixed Methods Approach, Mark A. Speckien

Dissertations

The number of students transferring from Myanmar to universities in Western society has increased rapidly in the past decade. Understanding the perceived readiness of these stakeholders may have substantial implications for student success as they make the transition. The purpose of this explanatory mixed methods study was twofold. First, to explore and explain Myanmar-based 11th and 12th-grade student, alumni, and teacher perceptions of student readiness to transition to a postsecondary educational setting in a Western country. Second, to provide recommendations for improving the college and international readiness skills of students making similar transitions. For research question one, the quantitative portion …

Intelligent System For Laparoscopic Surgery Suturing Skill Assessment, Mohammed Yasser Al-Gailani

Dissertations

In laparoscopic surgery, which is also referred to as minimally invasive surgery (MIS), surgeons carry out surgical procedures with the assistance of a video camera and several surgical instruments. Laparoscopic surgeons should possess excellent eye-hand coordination capabilities, strong cognitive knowledge, case and problem management, and manual dexterity skills. Such skills can be acquired through simulation using a basic, low-fidelity setup, such as the surgical box-trainer. General surgeons must pass a set of tests on a Fundamentals of Laparoscopic Surgery (FLS) Trainer device.

One pivotal skill for a successful operation is developing a sense of the applied forces on the tissue …

Saudi Arabian General Education Elementary School Teachers’ Attitudes Toward And Perceptions Of Giftedness And Gifted Education, Yaser Khaled Alharbi

Dissertations

The importance of developing the cognitive and affective needs of gifted students to help meet their academic needs as well as support them in achieving to their full potential has been well-established by past research. It is also confirmed by the literature that gifted and talented students have unique social-emotional needs and that the school environment plays an essential role in meeting gifted students’ needs. To better serve gifted students, schools must ensure that general education teachers are knowledgeable and supportive of the distinct cognitive and affective development of these students in conjunction with their academic needs. Different factors influence …

It’S Elementary: The Curricular Decision-Making And Instructional Practices Of Black Male Elementary Teachers., Ashlea Jean Campbell

Dissertations

This study explored the curricular decision-making and instructional practices of four Black male elementary teachers in a large suburban school district. In order to capture the intersection of their racial and gender identity with their educational practices, the researcher utilized educational connoisseurship and criticism, a methodology that examines the nuances that exist in the curricular and pedagogical choices of teachers. Critical race theory provided a framework for addressing the nuance that exists while also challenging dominant ideology regarding Black male elementary teachers. In addition to interviews and observations, this study provided space for participants to contribute directly to the data …

Bayesian Approach To The Mixture Of Gaussian Random Fields And Its Application To An Functional Magnetic Resonance Imaging Study, Mozhdeh Forghaniarani

Dissertations

Due to the functional nature of fMRI data, random field theory is used as a remedy to the multiple comparisons problem in brain signal detection. Traditionally, a Gaussian random field model is fitted to the functional data using this approach. However, fMRI data are not homogeneous, and there exist multiple underlying classes in functional data, so traditional inferential methods may fail. Here, we proposed a new model for signal detection in fMRI data in which we addressed the heterogeneity in such data. The proposed model is a mixture of two Gaussian random fields. We developed a Bayesian approach for hypothesis …

Deeper Learning And District-Level Curriculum Leadership: A Case Study Of One Large Public School District, Jonathan Warren Cooney

Dissertations

A key element within school accountability frameworks across the United States is student performance as measured by standardized assessments. Scholars have argued that these types of assessments and accountability systems have narrowed the curriculum to emphasize students' development of discrete, specialized skills. Researchers have recently suggested that deeper learning approaches will better support students in building the skills and understanding needed for life and work. Unfortunately, deeper learning has not commonly been observed at the school-wide level. Recent research suggested that a prevailing culture of district-level curriculum leadership serves as a potential barrier to the enactment of deep learning in …

An Instrumental Case Study Of Teachers' Perceptions Of Mandatory Professional Development During Educational Reform Efforts, Jennifer Elaine Wakeman

Dissertations

This instrumental case study explored 12 public-school teachers’ perceptions of mandatory professional development (PD) during times of educational reform efforts in the state of Colorado. The participants in this study represented five unique school districts in suburban and semi-rural settings who had experienced 14 hours or more of mandated PD on a single topic in the past 24 months and had at least five years of classroom experience. Two research questions guided this case study: What are teachers’ perceptions of professional development that is mandated as part of a district-wide instructional improvement initiative? What do teachers say they need in …

Synthesis And Characterization Of Novel Organic Ligands With Their Complexes Of Platinum, Copper And Uranium, Mustafa Adnan Yasin Aldulaimi

Dissertations

Transition metal complexes of symmetrical and asymmetrical Schiff bases have played a significant role in the field of coordination, inorganic, and bioinorganic chemistry as models for biological, analytical, industrial, and pharmaceutical applications. Over recent years a great deal of interest has developed in new transition metal complexes of Schiff base ligand. The preparation of novel organic ligands is the most important step in the development of metal complexes that exhibit unique properties and novel reactivity. To highlight the presentation of this dissertation and to provide more detailed investigations, the dissertation was separated into six chapters according to the sequence of …

Latent Variables Predicting Drug Use In Adolescents With High Versus Low Protective Factors, Jessica Jorgenson

Dissertations

The present study utilized archival data provided from the Minnesota Student Survey (2013). The study consisted of two levels of analysis. The first level involved the development of measurement models for various latent constructs (i.e., disaffiliation, normalized use, internalizing behaviors, and externalizing behaviors). Utilizing Structural Equation Modeling (SEM), the second level applied the observed (i.e., abuse) and measured latent variables to the prediction of the outcomes of interest (i.e., a latent variable estimate of substance use) for middle- and high school-aged youth. Models for adolescent girls and boys were examined separately based on sex and high vs low protective factors. …

Changing Criminal Thinking: An Examination Of Heterogeneity In Treatment Effects In A Sample Of Justice-Involved Persons With Dual Diagnoses, Michael Lester

Dissertations

Recent studies have indicated variability in cognitive change for justice-involved persons with mental illness exposed to treatments for criminal thinking and psychiatric risk factors. Research suggests that proactive styles of criminal thinking may be more difficult to change than impulsive or reactive styles. To date, however, no studies have identified risk factors for a limited response or modeled observed disparities in responsivity to interventions aimed at reducing criminal thinking. Using an archival dataset comprising 206 probationers with a dual diagnosis who were exposed to active CBT-based treatment, a latent profile analysis modeled unobserved heterogeneity in treatment response per observed changes …

How Well Do You Know Your Reach?, Tyler Surber

Dissertations

How does the relationship between an actor’s body proportions (eye-, shoulder-, and arm length) and environmental properties (object distance) affect the perception of whether an object is within reach? Experiment 1 demonstrated that participants are more accurate at judging their own eye height than shoulder height. Experiment 2 revealed that participants can accurately perceive the angular direction to a target object’s location. Interestingly, their pointing errors were significantly smaller when measured from the shoulder as a reference point than from the eye. In Experiment 3 we verified this finding using a functionally meaningful affordance task of reaching to a target …

A Mixed Method Investigation Of Industry Recognized Credentials And Academic Achievement Among Urban Schools In The State Of Missouri, Christopher L. Mcneil

Dissertations

The purpose of this study was to gather the effectiveness of the Industry Recognized Credentials in preparing Career and Technical Education students’ postsecondary opportunities. This study sought to explore if students’ exposure to Career and Technical Education (CTE) programing and attainment of Industry Recognized Credentials leads to positive postsecondary placement for Kansas City Public High School students. The researcher collected data from the 2018, 2019, 2020, and 2021 school years.

The researcher conducted a t-Test for difference in proportions, and the data revealed that the percentage of graduates attaining IRC for 2020-2021 was significantly higher than the previous years. The …

The Role Of Self-Efficacy And Academic Mindset On Middle School Math Achievement For At Promise Youth: An Explanatory Study, Michael Lockwood Mansfield

Dissertations

California’s accountability system has blended its focus on noncognitive factors of achievement as well as evidence of academic growth. School districts are becoming increasingly interested in developing noncognitive factors in their students to help increase student achievement. With the wide variety of mandates and responsibilities schools are shouldering, it will be important to continue developing methods to increase all school accountability metrics in relation with each other. This research aims to explore the relationship between noncognitive factors and mathematics achievement as measured by the Northwest Evaluation Association’s Measure of Academic Progress assessment (MAP). This study surveyed 8th graders throughout a …

Closing The Gaps: Understanding And Disrupting Deficit Thinking And Exclusionary Discipline Practices In A Latinx School, Edgar Ivan Alcaraz

Dissertations

Improving the academic outcomes for low-income underserved students has become imperative for districts who are committed to equity and justice. School cultures that emphasize college and career readiness for all have been found to improve the academic achievement of low-income students of color. This dissertation explores the efforts of a Latino middle school principal striving to build a college and career readiness culture. Deficit thinking, coupled with exclusionary discipline practices, were the biggest challenges to overcome while promoting a college and career readiness culture. The findings of this study highlight the need to address and disrupt these ideologies as a …

Perceptions Of Southwest Missouri Public School K‒12 Teachers And Building Principals In Regard To Preparedness Of Culturally Responsive Teaching, Katie C. Kensinger

Dissertations

Over the past two decades, K‒12 public education demographics have reflected an increase in student diversity while over 80% of the teaching population remains White (Ramirez et al., 2016). As student demographics evolve, public schools must adjust to provide all students with an education relevant to their backgrounds and experiences (Jones-Good, 2015). Teachers must prioritize and be prepared to teach diverse groups of students (Gay, 2018). This mixed-methods study included an analysis of teacher and principal perceptions of their level of preparedness for culturally responsive teaching in four southwest Missouri school districts with diverse student populations. The focus was placed …

Computational Studies Of Carbon Nanocluster Solidification, Chathuri C. Silva

Dissertations

A subset of micron-size meteoritic carbon particles formed in red giant atmospheres show a core-rim structure, likely condensed from a vapor phase into super-cooled carbon droplets that nucleated graphene sheets (~40Å) on randomly oriented 5-atom loops during solidification, followed by coating with a graphite rim. Similar particles form during slow cooling of carbon vapor in the lab.

Here we investigate the nucleation and growth of carbon rings and graphene sheets using density functional theory (DFT). Our objectives: (1). explore different computational techniques in DFT-VASP for various carbon structures and compare the results with literature, (2). investigate the nucleation and growth …

An Examination Of The Impact Of Student Loan Debt On Alumni Giving, Ashley N. Nickell, Molly B. Hurley

Dissertations

This study examined the effect of student loan debt on alumni’s willingness and ability to donate to their alma mater, including other identity-based motivating factors associated with an alumnus’ decision whether or not to donate. Participants of this study were recent (2015-2020) graduates of a doctoral program in the healthcare field in the Midwest, and were purposefully selected to answer questions regarding their income, loan debt, decision to give in monetary or non-monetary ways, and financial literacy education/financial preparedness. Data were gathered from virtual interviews that were transcribed and coded for emergent themes. The findings revealed that the majority of …

Profitably Risky: A Study Of Medicare Capitation Contracts For Primary Care Medical Practices, Michael Wieck

Dissertations

The Centers for Medicare and Medicaid Services is seeking to move medical providers from a fee-for-service reimbursement model to a value-based reimbursement model. In this dissertation, we studied the financial rewards and risks that accompany capitation contracts. We employed Poisson regression to estimate health-care utilization of beneficiaries under the care of primary care providers with varying levels of capitation. Then, we calculated capitation contract results for primary care practices using Monte Carlo simulations. We used three methods to predict medical payments for beneficiaries: (1) empirical probability distributions of annual medical payments, (2) theoretical probability distributions of annual medical payments, and …

Fostering The Non-Academic Trait Of Grit To Increase Nursing Student Success, Marianne Biangone

Dissertations

In nursing education, there are few challenges as elusive as determining why attrition occurs. Attrition has been attributed to factors such as academic underperformance, adverse life events, and financial issues. It is imperative to identify additional tools for students to increase the opportunity for program success despite his or her challenges. Grit is passion and perseverance for long-term goals. Grit has had a positive impact on academic achievement, and the need is present for research on the ability to foster the development of the characteristics that make up grit in undergraduate nursing students. The purpose of this study is to …

Academic Intensive Care Units: What Is The Impact On Student Achievement?, Brandi Compass

Dissertations

The purpose of this study was to determine if academic intensive care units along with no-zero grading policies at the high school level result in students having higher achievement levels on state EOC assessments. A mixed-methods approach was taken in order to obtain both qualitative and quantitative data from surveys and interviews. Additional quantitative data were analyzed from archival data. Two separate schools were chosen for the populations. High School A implemented academic intensive care units and no-zero grading polices while High School B did not. Participants in the study consisted of both teachers and students at High School A …

The Culturally Intelligent School Leader: Leadership Strategies Of Exemplary Elementary School Principals In Creating A Culture Of Inclusiveness, Leila Dodge

Dissertations

Purpose: It is the purpose of this explanatory mixed-method study to identify and describe the leadership strategies that exemplary elementary school principals use to create an organizational culture of inclusiveness using Kennedy's five leadership qualities of cultural differences.

Methodology: For this study, an explanatory mixed-method design was used to conduct research to identify and describe the leadership strategies that exemplary elementary school principals use to create an organizational culture of inclusiveness using Kennedy's five leadership qualities of cultural differences. The study's quantitative part was conducted using a SurveyMonkey delivered to each participant. In the survey, participants were asked if they …

Stereocontrolled Mannosylation By Hydrogen-Bond-Mediated Aglycone Delivery, Catherine Alex

Dissertations

Stereocontrolled Mannosylation by Hydrogen-Bond-Mediated Aglycone Delivery

Carbohydrates are the essential bio-molecules of life as they form the forefront of interactions with receptors, proteins, pathogens, or neighboring cells. On cell-surfaces, carbohydrates are mostly found as linear or branched glycoconjugates, and a majority of them are linked via either 1,2-cis or 1,2-trans O-glycosidic linkages. There is no template-driven pathway for achieving the synthesis of glycans unlike other biomolecules like proteins and nucleic acids. The synthesis of 1,2-trans glycosides can be reliably achieved via the neighboring group assistance. The synthesis of 1,2-cis glycosides is difficult because, beyond weak anomeric effects, there are …

Religious Leadership: Agents Of Social Change, Jacqueline Carter

Dissertations

Historically, churches in the United States acquired respect as institutions that cultivated spiritual maturity and advocated for social equality in Black communities. Religious leaders represent the voice of reason for communities facing complex social problems, then and today. How educational attainment influences religious leaders’ social action strategies and decisions to engage or disengage in social activism is under explored. Additionally, it is unclear what strategies religious leaders use for social advocacy in their communities. Using andragogy and social cognitive theory as theoretical frameworks, the purpose of this phenomenological study was to explore the educational experiences of religious leaders to understand …

Academic And Demographic Patterns Of Students Placed In Early Algebra I Acceleration, Jill Smith

Dissertations

In the United States, there had been a push for Algebra for All in the early 1990’s in an effort to increase performance on international assessments and provide equity for low-income students and students of color. As the number of students in eighth grade Algebra I increased, a small number of students enrolled in seventh grade Algebra I also increased. The purpose of this quantitative study is to identify and evaluate demographic and academic patterns of students placed in this early acceleration at the middle school level looking at the continuation of acceleration, higher achievement, and an increase in the …

How Elementary Principals Use The Six Sources Of Influence To Achieve Extraordinary Results, Monette Perez

Dissertations

Purpose: The purpose of this phenomenological study was to identify and explore how elementary principals of organizations who have achieved extraordinary results influence employees through personal motivation, personal ability, social motivation, social ability, structural motivation, and structural ability.

Methodology: This phenomenological study identified and explored 12 Southern California public elementary school principals and how they used the 6 sources of influence with their stakeholders to achieve extraordinary results. An interview protocol aligned with the study’s theoretical framework was developed with a thematic team. The respondents were purposefully chosen from principals who have led their schools to attain National …

Proactive Text Messaging For Public Health Surveillance During The Covid-19 Pandemic, Daria Kester

Dissertations

Problem

The Department of Public Health (DPH) of a suburban Midwestern county considers surveillance and control of COVID-19 to be sub-optimal, resulting in part from difficulties with completing case and contact interviews.

Methods

To increase the success rate of case investigation, proactive messaging using short message media (SMS) alerts is used in a quality improvement initiative based on the PDSA framework. Participants are sent text message alerts prior to receiving a call from a DPH case investigator. Results are recorded in a statewide database.

Results

Individuals who received text messages prior to receiving a case investigation interview phone call were …

Forty Years After The Larry P. Decision: School Psychologists’ Perceptions Of The Assessment Of African American Students With Specific Learning Disabilities, Shara Cabreros

Dissertations

Purpose: The purpose of this qualitative study was to identify and describe the assessment models school psychologists use to identify African American students with SLDs in three of the K-12 school districts in Riverside County. A second purpose of this study was to determine how school psychologists within three districts of Riverside County perceive the assessment model used in their school district affects the identification of SLDs in African American students. A third purpose of this study was to determine the assessment model school psychologists in three districts in Riverside County believe most accurately identifies SLDs in African American students. …