Examining The Effects Of A Curriculum-Based Professional Learning Community On Teacher Efficacy Toward Inquiry-Based Science Instruction, Samuel Joel Northern

Dissertations

Improving STEM education is pivotal to our country’s economic future and security. Unfortunately, most young students have limited access to standards-based science education. Science instruction is notoriously difficult to implement in the early grades. This dissertation explored the root causes for the lack of effective science instruction in elementary schools, including accountability testing, instructional time, historically weak standards, family factors, teacher efficacy, and professional development.

This study aimed to understand how elementary school teachers’ attitudes promote or hinder the implementation of science instruction. This study’s primary driver to improve science education in the early grades was a curriculum-based professional learning …

The Effect Of Pedagogical Agent Persona On Performance, Self-Efficacy, And Attitudes In Adult Learners In An Online Environment, Justin L. Mathews

Dissertations

Pedagogical agents, virtual avatars that are often included in online training or educational modules, have been studied in a variety of disciplines to determine the extent to which their inclusion in online or multimedia learning environments may influence both cognitive and affective outcomes in learners. The present study examined the effect of a peer-like pedagogical agent providing motivational messaging in an online English language learning environment to determine if the agent will positively affect college students’ performance, self-efficacy, and attitude in comparison to a control group. All participants studied an online, self-paced English grammar module, either with (treatment version) or …

Teacher Biases And Expectations: Impact On Self-Esteem, Self-Efficacy, Delinquent Behavior Among Black Grade School Students, Rhonda Lloyd

Dissertations

Black children and adolescents in today’s society face so many challenges that come about from the hands of authority figures in their life, their environment, the education system, and society as a whole. Through a critical review of literature, the author sought to answer three research questions: (1) What are the indications that teachers may be more biased toward Black students? (2) How do perceived teacher biases and discrimination impact the self-esteem and self-efficacy of Black students? (3) How are teacher bias and the school-to-prison pipeline connected? The literature review exposed a need for a teacher training model, which was …

Does The Input Equal The Outcome For Students With Emotional And Behavioral Disabilities?, Brigid Eileen Bright

Dissertations

Students with emotional and behavioral disabilities experience poor post-secondary outcomes despite the existence of research-based best practices to improve outcomes (Freeman et al., 2019; Mitchel et al., 2019). Research signifies this population as underserved and under-identified (Barnett, 2012). Additionally, funding best practices indicate student outcomes should be considered when allocating resources (Chartrand, 2019). The purpose of this mixed methods study was to consider both inputs and outcomes for graduates with emotional and behavioral disabilities (EBD) and graduates with significant cognitive impairments (SCI) in a rural northwest Arkansas district and the fiscal allocation for both populations. A comparison of quantitative post-secondary …

Social-Emotional Learning: Effects On Teacher Attrition, Retention, And Self-Efficacy, Shawna M. Olney

Dissertations

The rise in teacher attrition rates have been examined since the 1970s (Croasmun et al., 2000). Teachers have reported leaving the profession early due to many factors, including salaries, student discipline, administrative support, parental involvement, working conditions, and lack of professional respect (Cochran-Smith, 2004; Hughes, 2012). Teachers have felt unprepared in dealing with the high demands of teaching, especially in handling student discipline (Thibodeaux et al., 2015). Up to 35% of teachers have reported leaving the profession based on their difficulties with student discipline (Schonert-Reichl, 2017, para. 21; Schonert-Reichl et al., 2017, p. 18). The Collaboration for Academic, Social, and …

Analysis Of The Primary Volatile Compositions In The Oort Cloud And Jupiter-Family Comets Towards The Goal Of Understanding Their Origin And Diversity, Mohammad Saki

Dissertations

Knowledge of the initial conditions present in the early solar nebula is required to understand the evolution and its current volatile content. Comets were some of the first objects to accrete in the solar nebula. They are among the most pristine (primitive) remnants of the solar system formation, and their present-day volatile composition likely reflects the composition and conditions where (and when) they formed. Therefore, they are fossils of the solar system formation. High-resolution near-infrared spectroscopy is a valuable tool for sampling the parent volatile (i.e., ices subliming directly from the nucleus) composition of comets via analysis of fluorescence emission …

Novel Low Temperature Properties Of Filled And Unfilled Single Crystal Irsb3, Matthew Cook

Dissertations

The skutterudite family of materials has garnered a lot of attention in the condensed matter community and it persists to be an important system for exploring the fundamental physics of solids. The initial interest into compounds with this common structure was due to their promising thermoelectric properties giving the possibility of efficient energy harvesting. Since, there has been a huge effort to systematically synthesize new filled skutterudite compounds, as nearly every type of strongly correlated behavior has been found within this family. As the field of topological materials has gained momentum, these materials have also been given a renewed interest …

Dominating Functions In Graphs, Maria Talanda-Fisher

Dissertations

Domination in graphs has become one of the most popular areas of graph the- ory, no doubt due to its many fascinating problems and applications to modern society, as well as the sheer mathematical beauty of the subject. While this area evidently began with the work by the French mathematician Claude Berge in 1958 and the Norwegian-American mathematician Oystein Ore in 1962, domination did not become an active area of research until 1977 with the appearance of the survey paper by Ernest Cockayne and Stephen Hedetniemi. Since then a large number of variations of domination have surfaced and provided numerous …

Optimized Insulation Design Of Power Transformer Windings Under Fast Voltage Pulses, Juan Manuel Villanueva Ramirez

Dissertations

Power transformers are essential electrical power system devices. Using the principle of electromagnetic induction, they can transfer electric energy between two otherwise isolated circuits, as well as reduce or increase voltage levels without modifying the frequency. This allows reduction of power losses when electric energy is transferred between power plants and consumers. Because of their importance and widespread use, transformers failures can have a severe economic impact due to the temporary interruption of electric service.

The insulation design of power transformers is performed by considering the maximum values of voltage or current to which the device will be exposed during …

Institutional Factors That Prolong The New Degree Program Approval Lifecycle: Insights From Continuing And Professional Education Administrators In Higher Education, Erica Wilke Bova

Dissertations

Continuing or professional education administrators regularly participate in their university’s degree program approval process, as their schools serve adult learners who desire career-oriented education. Speed and efficiency to market are critical factors in ensuring high-quality, relevant, continuing or professional education programs; however, higher education decision making can be process laden and time consuming. There is limited scholarly research about the institutional factors that constrain and contribute to the efficiency and effectiveness of the new degree program approval process and its cycle time, even though it plays a critical role in institutional new product development. This phenomenological study foregrounds the perceptions, …

What Factors Support Degree Completion For African American Women Students At A Land-Grant Historically Black College University (Hbcu)?, Samantha Friar

Dissertations

There is minimal research conducted on African American women degree completion who attend a land-grant HBCU. This study investigated key factors that assisted 9 African American women and promoted their degree attainment. My research utilized the ethnography framework to observe a specific culture group, language, behaviors beliefs, and beliefs. The findings in this research identified 5 factors: culture environment, academic advising, student engagement, financial aid, and faculty mentoring. It was determined that cultural environment is a leading factor among the African American participants of this research, as connecting with peers that shared the same cultural beliefs as the participants do, …

Automated Algorithmic Machine-To-Machine Negotiation For Lane Changes Performed By Driverless Vehicles At The Edge Of The Internet Of Things, Ellie Lovellette

Dissertations

This dissertation creates and examines algorithmic models for automated machine-to-machine negotiation in localized multi-agent systems at the edge of the Internet of Things. It provides an implementation of two such models for unsupervised resource allocation for the application domain of autonomous vehicle traffic as it pertains to lane changing and speed setting selection. The first part concerns negotiation via abstract argumentation. A general model for the arbitration of conflict based on abstract argumentation is outlined and then applied to a scenario where autonomous vehicles on a multi-lane highway use expert systems in consultation with private objectives to form arguments and …

Data Mining Of Unstructured Textual Information In Transportation Safety Domain: Exploring Methods, Opportunities And Limitations, Keneth Morgan Kwayu

Dissertations

The unprecedented increase in volume and influx of structured and unstructured data has overwhelmed conventional data management system capabilities in organizing, analyzing, and procuring useful information in a timely fashion. Structured data sources have a pre-defined pattern that makes data preprocessing and information retrieval tasks relatively easy for the current technologies that have been designed to handle structured and repeatable data. Unlike structured data, unstructured data usually exists in an unorganized format that offers no or little insight unless indexed and stored in an organized fashion. The inherent format of unstructured data exacerbates difficulties in data preprocessing and information extraction. …

The Social Support Networks Of Students Who Identify As Black And Latino/A/X In Stem And Sbe Graduate Programs At Predominantly White Institutions, Kristi A. Tullis

Dissertations

Graduate students from historically underrepresented minority (URM) groups (those who identify as Black/African-American, Hispanic/Latino/a/x, Native American, Native Hawaiians/Pacific Islanders and/or Alaska Natives) encounter systemic and institutional hindrances to degree completion when enrolled in STEM doctoral programs at predominantly white institutions (Guiffrida & Douthit, 2010). Support networks have been identified as an important component for retention and success for graduate students from URM groups (Carlone & Johnson, 2007; Clewell, 1987; Johnson-Bailey, Valentine, Cervero, & Bowles, 2008; Joseph, 2012; Sweitzer, 2009). This study investigates the composition and structure of URM graduate students’ support networks, where their support comes from, in what capacity, …

Characterizing Undergraduate Students’ Proving Processes Around “Stuck Points”, Yaomingxin Lu

Dissertations

Learning to prove mathematical propositions is a cornerstone of mathematics as a discipline (de Villiers, 1990). However, since proving is a different mathematical activity as compared to students’ prior experience, research has also shown that many undergraduate students struggle to learn to prove, including those who major in mathematics (Moore, 1994; Selden, 2012). While the field has generated research that has analyzed the final products of proof (Selden & Selden, 2009) and there are frameworks for analyzing problem-solving processes (e.g., Carlson & Bloom, 2005; Schoenfeld, 1985, 2010), much remains to be known about analyzing undergraduate students’ proving processes. With a …

Investigating The Connection Between Teacher Professional Development And The Lesson Planning Process, Kyle B. Corlett

Dissertations

School districts across the country are facing increasing pressure to raise student achievement, specifically on state standardized tests (Buzick & Jones, 2015; Marsh & Farrell, 2015). Many states, including Michigan, connect teacher and administrator evaluations to student achievement (Revised School Code Act 451, 2003). The primary strategy school districts use to improve student achievement is professional development for its staff (Guskey, 2009). Professional development can consist of a variety of strategies to support educators in increasing their knowledge and skills, resulting in improved instruction and ultimately improved student achievement. This instrumental case study sought to explore how teachers experience the …

Real-Time Congestion Management In Modern Distribution Systems, Meisam Ansari

Dissertations

In this research, the problem of real-time congestion management in a modern distribution system with massive active elements such as electric vehicles (EVs), distributed energy resources (DERs), and demand response (DR) is investigated. A novel hierarchical operation and management framework is proposed that can take advantage of the demand side contribution to manage the real-time congestion. There are five main steps in this framework as 1) the aggregators send their demand to the microgrid operators (MGOs), 2) the MGOs send their demand to the distribution system operator (DSO), 3) the DSO detects the congestions and calls the engaged MGOs to …

Development Of A Decision Support System For Sustainable Water Planning In Abu Dhabi, Uae, Mohamed Ibrahim Kizhisseri

Dissertations

One of the main challenges for water managers is to foresee the future accurately; then, design appropriate policies and infrastructure plans accordingly. The use of decision support systems in the field of water resource management and planning is now widely implemented, but its use in sustainable water planning of a nation or state in arid and semi-arid areas, such as Middle East countries, remains limited. The main objective of this dissertation is to present a graphical software tool that can assist water planners and decision-makers in long-term water management and planning. Sustainable planning for Abu Dhabi’s future water supply is …

Insights Into The Packaging Of Mouse Mammary Tumor Virus (Mmtv) Genomic Rna By Identifying Pr77ᴳᴬᴳ Binding Sites Involved During Its Selective Encapsidation, Akhil Chameettachal

Dissertations

Selective encapsidation and/or packaging of retroviral genomic RNA (gRNA) by Gag during retrovirus assembly is a crucial step for generating infectious virus particles. Despite having been studied extensively, the mechanism by which the retroviral Gag precursor selects and packages the retroviral genome remains largely unclear. Therefore, to understand the molecular mechanism(s) of mouse mammary tumor virus (MMTV) gRNA packaging, as a first step, expression of full-length recombinant Pr77^Gag -His6-tag fusion protein in bacteria was done. The recombinant Gag protein was then purified from the soluble fractions of bacterial cultures using immobilized metal affinity chromatography (IMAC) and size exclusion chromatography …

Increasing Strategies And Programs For The Retention And Graduation Of Black Undergraduate Students At The University Of Central Florida, Carla Sorrells Morris

Dissertations

Abstract of Dissertation

Increasing Strategies and Programs for the Retention and Graduation of Black Undergraduate Students at the University of Central Florida

This study aims to expand the knowledge and understanding of retention and persistence opportunities for Black students at the University of Central Florida. Qualitative research and data were collected and analyzed on six minority students at UCF. The study discovered academic, social, and cultural factors that affect Black undergraduate students' retention, persistence, and graduation at the University of Central Florida.

Analysis of the data revealed the need for minority students to access academic strategies and participate in intervention …

Implementation Of Social Emotional Learning To Service The Whole Child, Willard Willette

Dissertations

ABSTRACT

Today’s students are facing an overwhelming number of obstacles that hinder their emotional, social, and academic growth. As a principal, I recognized this growing burden my students were carrying. Such hindrances as a rise in gun violence, continued socioeconomic disadvantages, and countless other more personal obstacles and their effects on students were evident inside the school setting. Many of our students were traumatized by these life changing circumstances and then left clueless as to how to handle them or the challenges life may bring next. The adults in our school and many of the families did not have the …

A Case Study Of A Math Teacher Of Black Students: Examining Instruction That Addresses The Content Knowledge Gap Through Culturally Relevant Instruction, Theartris Childress Iii

Dissertations

This program evaluation focuses on the teaching practices of one Chicago Public School math teacher who has demonstrated success over time in the achievement of African American students. The primary research question explored how educators and leaders can learn from best practice research and case studies of exemplary math instruction the instructional and pedagogical skills needed to work effectively with African American students. Employing a qualitative research methodology, with data gathered from teacher interviews and other stakeholders, and observations, this study identified key components to improve mathematics instruction and culturally proficient practices. Policy recommendations and implications illustrate the need for …

Selective Neural Stimulation By Leveraging Electrophysiological Diversity And Using Alternative Stimulus Waveforms, Bemin Ghobreal

Dissertations

Efforts on finding the principle mechanism for selective neural stimulation have concentrated on segregating the neurons based on their size and other geometric factors. However, neuronal subtypes found in different parts of the nervous system also differ in their electrophysiological properties. The primary objective of this study is to investigate the feasibility of selective activation of neurons by leveraging the diversity seen in passive and active membrane properties.

Using both a local membrane model and an axon model based on the CRRSS, the diversity of electrophysiological properties is simulated by varying four model parameters (membrane leakage-Gleak and capacitance-Cm, temperature coefficient-Ktemp, …

Methods For Extending Biomedical Reference Ontologies And Interface Terminologies For Ehrr Text Annotation, Vipina Kuttichi Keloth

Dissertations

Biomedical ontologies and terminologies are a cornerstone in various electronic health record systems (EHRs) for encoding information related to diseases, diagnoses, treatments, etc. Ontologies in general represent entities (concepts) and events along with all interdependent properties and relationships in an efficient way to facilitate easy access, retrieval and sharing. With the landscape of medicine rapidly changing, biomedical ontologies and terminologies need to rapidly evolve to support interoperability, medical coding, record keeping, and healthcare activities in general, and to facilitate interdisciplinary research. Extending ontologies by identifying new and missing concepts plays a vital role in the maintenance of ontologies to keep …

Reconstituting The Cyanobacterial Circadian Clock In Vitro, Pyong Hwa Kim

Dissertations

Cyanobacteria are photosynthetic organisms that are known to be responsible for oxygenating Earth’s early atmosphere. Having evolved to ensure optimal survival in the periodic light/dark cycle on this planet, their genetic codes are packed with various tools, including a sophisticated biological timekeeping system. Among the cyanobacteria is Synechococcus elongatus PCC 7942, the simplest clock-harboring organism with a powerful genetic tool that enabled the identification of its intricate timekeeping mechanism. The three central oscillator proteins—KaiA, KaiB, and KaiC—drive the 24 h cyclic gene expression rhythm of cyanobacteria, and the "ticking" of the oscillator can be reconstituted inside a test tube just …

Intermittent Dynamics Of Dense Particulate Matter, Chao Cheng

Dissertations

Granular particle systems are scattered around the universe, and they can behave like solids when there exist strong force-bearing networks, so that the granular system can resist certain stress without deformation. When such a network is not present, particles yield to small stress and behave like a fluid. A wide range of systems exhibit intermittent dynamics as they are slowly loaded, with different dynamical regimes governing many industrial and natural phenomena. While a significant amount of research on exploring intermittent dynamics of granular systems has been carried out, not much is known about the connection between particle-scale response and the …

Radio Diagnostics Of Particles And Plasma In The Solar Corona, Sherry Chhabra

Dissertations

Radio diagnostics, in addition to their capabilities in exploring intense, impulsive bursts, also provide a high sensitivity to much weaker events, which may not show any substantial signature in other wavelengths.

The initial case study examines a complex event consisting of multiple radio sources/bursts associated with a fast coronal mass ejection (CME) and an M 2.1 class solar flare (SOL2015-09-20). ‘First-light’ data from the Owens Valley Radio Observatory–Long Wavelength Array is put in context with observations from Large Angle and Spectrometric Coronagraph onboard the Solar and Heliospheric Observatory, along with the WAVES radio spectrograph onboard WIND, the Expanded Owens Valley …

Development Of Deep Learning Neural Network For Ecological And Medical Images, Shaobo Liu

Dissertations

Deep learning in computer vision and image processing has attracted attentions from various fields including ecology and medical image. Ecologists are interested in finding an effective model structure to classify different species. Tradition deep learning model use a convolutional neural network, such as LeNet, AlexNet, VGG models, residual neural network, and inception models, are first used on classifying bee wing and butterfly datasets. However, insufficient data sample and unbalanced samples in each class have caused a poor accuracy. To make improvement the test accuracy, data augmentation and transfer learning are applied. Recently developed deep learning framework based on mathematical morphology …

Safe Yield Comparisons For The 1960’S And 2000’S Drought In The Passaic River Basin, Stephanie R. Santos

Dissertations

The Passaic River Basin is a complex system of rivers, tributaries, reservoirs, and some of the largest water purveyors in the State of New Jersey. Located in the northeastern part of the State, it drains approximately 800 square miles of water that is used for distribution to the five major purveyors: North Jersey District Water Supply Commission, Passaic Valley Water Commission, Jersey City, Newark, and New Jersey American Water. These purveyors operate under a safe yield, which is defined by the New Jersey Department of Environmental Protection (NJDEP) as the amount of water that should be continuously available should the …

First-Principles Density Functional Theory Studies On Perovskite Materials, Aneer Lamichhane

Dissertations

Perovskites are a family of materials with a diverse combination of different elements. As a consequence, they exhibit numerous functionalities such as pyroelectric, piezoelectric, ferroelectric, and ferromagnetic with applications in photovoltaic cells, LEDs, superconductivity, colossal magneto-resistance, and topological insulators. After 2009, perovskites have gained notoriety as suitable materials for solar cells and alternative candidates to silicon-based conventional solar cells. Generally, oxide perovskites exhibit good dielectric properties, halide perovskites display good photonic qualities, and chalcogenide perovskites are used in applications in solid-state lighting, sensing, and energy harvesting. In this dissertation, various types of perovskites ranging from oxide to halide are investigated …