Digital Commons Network^™

Evaluating Spatial-Temporal Patterns In Us Tornado Occurrence With Space Time Cube Analysis And Linear Kernel Density Estimation: 1950-2019, Darrell L. Wiser

Electronic Theses and Dissertations

This research estimated the spatial-temporal patterns of tornadoes in the continental United States from 1950-2019 using the National Weather Service Storm Prediction Center’s Severe Weather GIS (SVRGIS) database. This study employed Space-Time Cube Analysis and Linear Kernel Density (Kernel Density Linear Process, (KDLP)) rather than the standard Kernel Density Estimation (KDE) approach; to evaluate whether tornado hotspot locations and intensities shift over time.

The first phase of the study utilized KDLP to map changes in tornado hotspots and qualitatively assess decadal shifts in hotspot locations and intensities by occurrence and magnitude between decades using ArcGIS Pro and CrimeStat. Next an …

An Intersectional Study Of Perceived Academic Climate And The Imposter Phenomenon In Psychology Students, Kelsey Braun

Electronic Theses and Dissertations

Social exclusion in higher education can occur at multiple levels (e.g., systemic, institutional, interpersonal, individual), and individuals simultaneously hold multiple social identities that could influence their perceptions of academic climate. The current study utilized a mixed-methods convergent parallel design to explore the impact of multiple social identities, perceptions of academic climate, and the imposter phenomenon among psychology students. In the quantitative portion, participants (N = 142) completed an online survey related to gender centrality, academic climate, and imposter phenomenon. Gender group comparisons revealed that cisgender men indicated poorer perceptions of climate than cisgender women and gender minorities, but imposter …

The Paleoecology Of High-Elevation Bison In The Greater Yellowstone Ecosystem And Implications For Modern Bison Conservation, Darian Bouvier

Electronic Theses and Dissertations

The national mammal of the United States, the American Bison (Bison bison) was once nearly extinct. Populations have recovered to the degree that thousands roam the Great Plains today. Due to their large numbers and body size, this species has an oversized impact on the ecological communities where it lives and is considered a keystone herbivore in modern North American grasslands. This study explores the detailed, seasonally resolved, paleoecology of seven bison from the Greater Yellowstone Ecosystem during the Late Holocene through stable isotope analyses and species niche modeling. Isotopic analyses of δ¹³C, δ¹⁵N, …

An Evaluation Of Castor Californicus And Implications For The Evolution And Distribution Of The Genus Castor (Rodentia: Castoridae) In North America, Kelly Lubbers

Electronic Theses and Dissertations

The genus Castor is represented in Eurasia by Castor fiber, North America by C. canadensis, and has been in North America since the late Miocene. This study aims to assess whether morphology of Miocene-Pliocene C. californicus and extant C. canadensis are distinctly different. Specimens of Castor were compared using geometric morphometrics on cranial material and linear measurements of postcranial material. Species occurrence data were compared with past and future climate data to assess Castor distribution in North America through time. Results show that C. canadensis is highly variable in both cranial and postcranial morphology and C. californicus falls …

An Investigation Of The Relationship Between Teachers’ Personal Epistemologies And Their Self-Efficacy About Culturally Responsive Classroom Management, Tahani Ahmed

Electronic Theses and Dissertations

Diversity is now an essential matter in US public schools. For the first time in America's history, students of color will constitute a majority of the public school enrollment; on the other hand, most early childhood and elementary teachers remain monolingual, white, middle-class females (Hussar & Bailey, 2019). The demographic mismatch between students and teachers presents a critical concern for teacher preparation programs (Banks et al., 2005; Gay, 2018; Muñiz, 2019). Therefore, this study proposed that understanding the relationship between pre-service teachers' epistemological beliefs and their culturally responsive classroom management self-efficacy illustrated factors that may improve their teaching concept toward …

Individual Characteristics Of Postsecondary Underachievement, Natasha Godkin

Electronic Theses and Dissertations

Underachievement in postsecondary education has been a growing concern for educators and researchers. Higher education institutions have implemented early alert systems to identify students performing below standards. This early warning system has major limitations that confine it to an identification only approach. The current study aimed to investigate the psychometric properties of the Student Attitude Assessment Survey-R (SAAS-R) in a postsecondary sample. First, a confirmatory factor analysis validated the SAAS-R in a postsecondary sample. Predictive validity was then investigated by identifying students as underachieving or achieving based on responses to the SAAS-R and via a regression-based discrepancy model (ability vs. …

The Effectiveness Of A Career And Technical Education Program Of Study On Preparing Students For Their Chosen Career, Rigoberto Vasquez

Electronic Theses and Dissertations

Attending a 4-year university is not a goal for all high school students. Some students, as early as their first year in high school, have chosen another direction by enrolling in a career and technical education (CTE) program of study (POS). The purpose of the study was to conduct a qualitative case study documenting the outcomes of past graduates of a CTE POS located on a public comprehensive high school campus in California. The participation of former graduates to share their insight and experience from being high school age students to working adults provided the real-life ramifications of the effectiveness …

Effects Of Excessive Soil Phosphorus Accumulation On Loblolly Pine (Pinus Taeda L.) Seedlings, Hannah C. Bays

Electronic Theses and Dissertations

Many landowners in East Texas apply poultry litter to pastures as a source of nitrogen (N) for forage crops. After many years of repeated poultry litter application, soils can accumulate extremely high extractable phosphorus (P) concentrations, sometimes over 1000 mg kg^-1 of plant available P. Landowners report the conversion of these pastures to loblolly pine (Pinus taeda L.) plantations is often problematic, with poor seedling survival and abnormal tree growth. This study was conducted to assess the effects of excessive soil phosphorus on loblolly pine seedlings. An outdoor pot study was conducted using bare root seedlings and triple …

Mock Jurors' Recommended Sentences For Perpetrators Who Have Traumatic Experiences, Katherine West

Electronic Theses and Dissertations

Experiencing trauma can result in neurological and biological changes, precipitating long-term damage to the brain and body. A considerable proportion of incarcerated persons have reported that they have experienced some type of trauma (Stensrud, Gilbride, & Bruinekool, 2018). Using scenarios of hypothetical crimes of varying degrees of seriousness, this study explores whether disclosure of the perpetrator’s traumatic childhood experiences has an influence on the severity of the sentence that mock jurors would recommend for that perpetrator. The mock jurors’ trait empathy, Belief in a Just World, and their own traumatic experiences were assessed to determine whether these characteristics could account …

An Investigation Into The Use Of Biomechanical And Performance Data From Vertical Jump Testing To Monitor Competitive Weightlifters, Dylan Suarez

Electronic Theses and Dissertations

This investigation aimed to employ novel analyses to longitudinal jump testing data gathered from competitive weightlifters to identify how certain biomechanical and performance characteristics obtained from the countermovement jump (CMJ) relate to changes in weightlifting performance over time and if they can differentiate higher and lower performers. A linear mixed-effect model was used to assess and compare the ability of countermovement jump height and net-impulse to predict Sinclair weightlifting total. CMJ force-time waveforms were compared in cross-sectional and repeated measures analyses to distinguish the force application patterns of higher-performing weightlifters and if they change over extended periods of training. It …

An Examination Of The Working Relationships Between General Education Teachers, Special Education Teachers, And Paraprofessionals In General Education Settings, Rita Page Hosay

Electronic Theses and Dissertations

The purpose of this study was to provide an examination of the relationships between general education teachers, special education teachers, and paraprofessionals and the influences of these relationships on students with disabilities. This study was conducted through the process of semi-structured interviews with general education teachers, special education teachers, and paraprofessionals working in two Tennessee school districts. The researcher found that communication practices, training, perspectives, time, role expectations, development of partnerships, and the creation of supportive environments affect the development of working relationships among special education teachers, paraprofessionals, and general education teachers. The researcher found that these relationships influence the …

Female Motivation In Engineering, Manufacturing, And Stem-Related Trades, Leaann Nichole Manz, Leaann Nichole Manz-Young, Leaann Nichole Young

Electronic Theses and Dissertations

Historically, female representation in engineering and manufacturing trades has been underrepresented compared to their male counterparts. Given this trend, the scope of this paper is to analyze the motivational factors among females who are currently working in Engineering and Manufacturing related trades in the surrounding lower East Appalachian area. Literature research will support an analysis of the following focus: Females in Engineering and Manufacturing Trades. The study focuses on analyzing questionaries from thirty-two females based on the Social Cognitive Career Theory and its three components: “outcome expectations, career interest, and career self-efficacy”. The major findings of this study …

A Study Of The Perceptions Of New North Texas Assistant Principals On Administrative Preparation Programs, Larry D. Croy

Electronic Theses and Dissertations

The purpose of this qualitative descriptive study was to examine the perceptions of new K-12 assistant principals in suburban North Texas school districts related to their level of preparation upon obtaining their first assistant principal positions. A purposive sample of 16 new assistant principals participated in semistructured interviews and a focus group. The interviews and the focus group conversation were recorded and transcribed. In vivo coding and structural coding were used to analyze the data. The findings of the study confirmed that the participants of the study overwhelmingly believed that their principal preparation programs did not adequately prepare them for …

Personal Narratives Of English Language Learners With Learning Disabilities: Paving The Way To Success At A Private University In Central Texas, Oralia Guzman-Wheeler

Electronic Theses and Dissertations

© Copyright by Oralia Guzmán-Wheeler (2022) All Rights Reserved iv Abstract More than half of English language learners with learning disabilities who enroll in college to obtain an undergraduate degree drop out. This narrative study’s purpose was to examine the ways English language learners with disabilities navigate the system of higher education and overcome challenges along the path toward college graduation. The participants in this qualitative interview study included six undergraduate students attending a 4-year college in central Texas. The narrative design involved participants sharing their lived stories and experiences in semistructured interviews. The data analysis revealed the following four …

Leading Through Music: A Comparative Case Study On The Effects Of Military Band Performance, Jessica A. Williams

Electronic Theses and Dissertations

This study explored the emotional impacts of military band performance, as well as the result of military band support loss on individuals in surrounding communities. The primary objectives of this qualitative comparative case study were to discover the value of military bands perceived by audiences and musicians. A critical, qualitative examination was implemented to assess how the atmospheres created by military bands influence their audiences and how communities react to reduced opportunities to interact with military band members. Community members of the 329D and TRADOC Army Bands were surveyed and interviewed in this study to compare the morale and sense …

Differences Between African American And White Males In Grades 6-8: Comparative Evidence From Selected Texas Rural Schools, Sheenah Maria Hopkins-Johnson

Electronic Theses and Dissertations

The academic achievement gap among Black males in grades 6-8 across Texas is a growing concern. Based on the State of Texas Assessments of Academic Readiness (STAAR), secondary data from the Texas Education Agency (TEA) was used to evaluate scores from a sample of Texas rural schools. In this quantitative, non-experimental methods study, the dependent variable examined was the STAAR reading score at the “meets grade level,” and the independent dichotomous variables examined were: race, whether or not the student was classified in one of the following groups: ECD, at-risk, and special education. Academic trends from the 2017-2019 academic school …

Elementary Principals’ Instructional Leadership Role In International Schools: The Challenges And Perceptions Of Student Grouping, Hafida Belkacem Becker

Electronic Theses and Dissertations

Globally, elementary principals have similar responsibilities and duties. Some of their obligations include clerical tasks, other managerial assignments, and instructional leadership duties. All of these jobs require attention and can be time consuming. The researcher aimed to understand the perceptions which challenge elementary principals’ beliefs about student grouping strategies and the impact on reading achievement within a network of 35 schools located around the world. Principals at these schools have the challenge of creating student groups with limited numbers of students and a wide range of abilities. At most of the schools in this network, there are only enough enrolled …

Exploring Teachers' Perceptions On The Fidelity Of Implementing Teaching Strategies Gold, Shucrea Yamina Victor-Cameron

Electronic Theses and Dissertations

The purpose of this qualitative case study was to assess the fidelity of implementation of the school readiness/kindergarten preparedness program and the training being used, called the Teaching Strategies GOLD®, through the perceptions of preschool teachers from a Head Start program in southeastern Florida. This study addressed the crisis with the school readiness outcomes in the state of Florida. Specifically, children are entering school underprepared for kindergarten. The Florida Kindergarten Readiness Screener data revealed failing test scores at the selected study site during the 2017–2018, 2018–2019, 2019–2020, 2020–2021, and 2021– 2022 school years. Implementing and measuring the efficacy of this …

Leading For Sustainability In School-Community Partnerships, Kimberly Renee Benavides

Electronic Theses and Dissertations

Schools receive support in the form of partnerships with organizations such as businesses, churches, and non-profits for many reasons, and such partnerships are beneficial to students and the school community. The purpose of this participatory qualitative study was to determine behaviors of elementary school principals that result in the sustainability of school-community partnerships beyond the initial year of implementation. Elementary school principals in an urban public school district in North Texas were interviewed along with leaders from their corresponding community partners to determine the role of the principal in school-community partnership work. Through an in-depth analysis of interview transcripts, the …

Portraits Of Leadership In Higher Education: Directors Of Centers For Teaching And Learning Leadership Styles And Dei Practices At Four-Year Universities In The U.S., Angela K. Johnson

Electronic Theses and Dissertations

This study aimed to examine Directors of Centers for Teaching and Learning DEI practices and understanding of leadership style within their 4-year universities in the United States. Information indicates that student enrollment of students identifying as members of historically marginalized groups is increasing and that persistent descriptions of experiences related to educational barriers negatively impact learning experiences. Integrating this information into this narrative life span study and considerations of the components of leadership identity development provided themes regarding the critical practices among higher education institutional leaders. The study presented findings that described the impact of the life span factor on …

Schooling Black Males: Hegemonic Discourses, Structural Barriers, And Strategic Resistance, Cleo Wadley

Electronic Theses and Dissertations

Black males have scored at the lowest levels of academic achievement compared to other racial groups in many Texas school districts. The achievement gap for this population of students has been explained by both material constraints and oppressive hegemonic discourses. The purpose of this qualitative research study was to understand how such barriers and discourses affected these students and how the students negotiated their experiences in school. This study was designed to describe the problem, its background and to discuss a relevant theoretical framework. This study examined the academic achievement data for Black males and the current literature on adverse …

Loggerhead Shrike Detectability And Occurrence In Coastal South Carolina Urban Areas, Michelle Krauser

Electronic Theses and Dissertations

Grassland birds, such as the loggerhead shrike (Lanius ludovicianus), are threatened by extensive land-use change, including urbanization. Loggerhead shrikes have been declining since the early 1900s and are rare or extirpated in portions of their former range. Obtaining reliable population estimates of loggerhead shrikes is important to identify demographic trends and ensure conservation decisions are based on an accurate assessment of their current status. Imperfect detection, or the inability to detect every shrike during a survey, can result in biased population estimates. Estimating detection probability is labor-intensive and requires assumptions that are difficult to satisfy in most field studies. Understanding …

Steps Toward The Total Synthesis Of The Chrysosporazine Family, Katie Kaczynski

Electronic Theses and Dissertations

Cancer is one of the leading causes of death worldwide, with 19.3 million new cancer cases and 10 million deaths in 2020 alone. In the United States, cancer was the second leading cause of death after heart disease. One of the reasons that cancer is so frequently terminal is that cancerous cells frequently develop multidrug resistance (MDR) to frontline chemotherapeutical treatments, resulting in cancers cannot be treated and are inevitably fatal. This makes the discovery of ways to combat MDR so important in the treatment of cancer. The chrysosporazines are a family of recently discovered (2019) natural products that have …

A Review Of Current Methods In Avian Dietary Analysis And Their Integrated Application To Characterize The Trophic Niche Of Louisiana Waterthrush (Parkesia Motacilla)., Brandon Hoenig

Electronic Theses and Dissertations

Characterizing a species’ dietary composition presents an avenue to understand many facets of its ecological niche and can provide essential information for the species’ long-term conservation. To date, the vast majority of diet studies have relied on direct identification of prey during foraging observations or from diet samples to characterize the dietary habits of birds. However, advancements in laboratory-based approaches have revolutionized the field of trophic ecology by allowing researchers to indirectly infer dietary habits with higher resolution across greater time scales. Here, I apply two of these laboratory-based techniques, namely DNA metabarcoding and stable isotope analysis, to characterize the …

Exploration Of Young Children And Families Use Of Technology In A Rural School District, Kim Dickert-Wallace

Electronic Theses and Dissertations

This dissertation explores the use of mobile technology with young children ages 2 to 5 in a small rural school district in southwestern Pennsylvania. Grounded in an understanding that family-child relationships are central to children’s development and school readiness, this study seeks to understand the ways families engage with children around technology use, how young children use technology, and how these habits compare to national data. The data also led to ways the school district might support families and young children using mobile technology in developmentally appropriate ways. Thirteen families that live in the Mountain Valley School district completed the …

A Program Evaluation Of Teacher And Administrator Perceptions Of Technology Integration At The K-6 Level In The Seneca Valley School District And The Impact Of Covid-19, Bria Koch

Electronic Theses and Dissertations

Education and learning were upended in 2020 due to the COVID-19 pandemic. Approximately 1.6 billion learners in more than 190 countries were impacted by the pandemic with 90 percent of countries adopting digital or remote learning policies (United States Department of Education, 2021). This program evaluation of teachers’ and administrators’ perspectives examined how well technology integration was taking place in K-6 grade classrooms in the Seneca Valley School District. Due to the interruption of traditional learning because of the COVID-19 pandemic, it was an opportune time to examine both teachers’ and administrators’ perceptions about the district’s level of success at …

Investigating Student Self-Beliefs And Learning Metrics In Online Courseware: A Quantitative Inquiry, Rachel Van Campenhout

Electronic Theses and Dissertations

Online courseware is an emerging educational technology that has the potential to reach students at scale. Designed with cognitive and learning science principles, courseware utilizes effective methods to maximize learning outcomes for students. Mindset (implicit theories of ability) and self-efficacy are two widely researched self-belief topics which have been shown to influence student learning outcomes and self-concepts. These self-belief theories are not specific to a domain and therefore could be measured and analyzed in relation to student learning metrics from any subject. The purpose of this nonexperimental correlational research study is to investigate the relationships between student self-beliefs and key …

Perceived Levels Of Teaching Self-Efficacy Among Advanced Ces Doctoral Students Engaging In External Pedagogical Experiences, Erika Williams

Electronic Theses and Dissertations

This quantitative study examined factors of internal preparation practices (i.e., coursework in college teaching, fieldwork in college teaching, and frequency of supervision) and external pedagogical experiences (i.e., holding a bachelor’s or master’s degree in teaching and adjunct faculty experiences in higher education) and their potential effects on teaching self-efficacy among counselor education and supervision doctoral students. This study identified both significant and non-significant relationships between the stated variables. Contrary to previous research (Suddeath et al., 2020), internal preparation practices did not significantly predict scores of teaching self-efficacy among this population. However, the findings suggest that participants holding a bachelor’s or …

On Your Marks, Handset, Go: An Illustrative Case Study Of A Professional Development Initiative About Mobile Learning, Nichole A. Scarlett

Electronic Theses and Dissertations

Technology is shaping our personal and professional lives every day, yet many educators struggle with its implementation and therefore are not using it to the fullest potential. The purpose of this single-case study was to analyze how a teacher’s participation in a Professional Development (PD) initiative influenced the implementation of mobile technology in teaching and learning mathematics. Using the Teaching for Robust Understanding (TRU) framework (Schoenfeld et al., 2016a) and the Substitution, Augmentation, Modification, Redefinition (SAMR) model (Puentedura, 2006) in this qualitative research, I employed a case study approach to understand the challenges faced by a teacher and ways of …

Rooted In The Earth: An Igbo Sacramental Nature Of The Universe, A Model For Igbo Christian Ecological Ethics, Kenneth Oguzie

Electronic Theses and Dissertations

The contemporary Igbo society faces a lot of challenges. These include political, religious, and moral crises. These crises affect the environment in many ways. They threaten the peace and harmony of the Igbo society. As a result, it touches on faith. The Igbo society holds a holistic view of life. Whatever affects one aspect of life affects the other areas. Ecologically, various factors are responsible for the crises. These include changes in lifestyle from the traditional way of living to modern style of life with its penchant on consumerism. Also, colonialism and its lingering residues, civil unrests, politics, population growth, …