Digital Commons Network^™

Robust Adaptive Model Predictive Control Of Nonlinear Sample-Data Systems, Lixing Yang

Theses and Dissertations

In the past decades, model predictive control (MPC) has been widely used as an efficient tool in areas such as process control, power grids, transportation systems, and manufacturing. It provides an approach that aims to design stabilizing feedback to the system so that the performance criterion gets minimized while the state and input constraints get satisfied. In many situations, MPC may outperform other approaches to design and implement feedback control systems. Furthermore, MPC may solve optimization problems with large and practically important sets of multiple-input multiple-output (MIMO) systems efficiently. A typical implementation of MPC predicts the optimal control inputs that …

Predictive Validity Of The Classroom Performance Survey, Asia Simone Thomas

Theses and Dissertations

The current study evaluated the concurrent associations between an adapted version of the Classroom Performance Survey (CPS) and academic and behavioral student outcomes. Participants were one cohort of kindergarten through 5th grade children enrolled in a public elementary school. Preliminary results suggested that the CPS was a significant predictor of academic student outcomes similar to previous research. Hierarchal regression analyses indicated that the Academic and Interpersonal Subdomains improved the prediction on students’ GPA, above and beyond MAP scores alone. Finally, descriptive statistics indicate similar student performance across ‘in person’, ’virtual’, and ‘hybrid’ learning settings. Educators using a Multi-Tiered System of …

Exploring Students’ Cosmopolitan Perspectives In An Undergraduate, Intermediate Spanish-Language Class, Erin Carlson

Theses and Dissertations

The purpose of this study was to explore how SPAN 121 might be designed to foster and support students’ development of cosmopolitan perspectives. Specifically, it explored how English-speaking students might demonstrate cosmopolitan perspectives in response to activities engaging them in Spanish with global Spanish speakers as part of their undergraduate, intermediate Spanish-language class. Theories of cosmopolitanism value responsible, global citizens engaged in open and respectful dialogue across geographic boundaries to learn about themselves and the world and may guide undergraduate college students in intercultural interactions. Through teacher action research utilizing qualitative case study, this study explored which activities might foster …

Effects Of Basketball Exercise Simulation Test (Best) On Landing Mechanics In Active Females, Madison Treece

Theses and Dissertations

Intro: In the United States, female basketball players have the second highest rate of ACL injury, following female soccer players. This injury rate is four times higher than their male counterparts. These injuries occur more frequently at the end of the first and second halves and may be associated with exercise-induced fatigue causing knee instability. The purpose of this pilot study was to determine the effects of a basketball simulation test on landing mechanics. Methods: Six subjects completed both the intervention and the control trial consisting of four 10-min quarter game simulations of the validated Basketball Exercise Simulation …

Applying The Comprehensive Evaluation Of Return-On-Talent-Investment Model (Certi) In Higher Education, Mazen Aziz

Theses and Dissertations

Economic turmoil has forced higher education institutions (HEI) to reduce expenditures in many areas, including human resource operations such as talent development. Before considering these cuts, HEI should conduct robust assessments of their efficacy, including whether they generate more revenue than they cost to administer. These assessments were critical contextually as state divestment in higher education and mounting public pressure against tuition hikes forced HEI to heavily rely on external funding sources, which became essential in these economically uncertain times. This three-article dissertation critically examined existing evaluation methodologies of a type of talent development initiative, faculty research development (FRD) programs, …

Scaffolding Teacher Candidates In Developing Discourse And Acquiring Praxis, Laura Potuto Kaufmann

Theses and Dissertations

This study examines what scaffolding practices impacted how teacher candidates assume teacher Discourse and develop teaching praxis. Vygotsky’s Zone of Proximal Development, Bruner’s Scaffolding, and Gee’s Discourse are used as a framework for this research. Using data from surveying and interviewing six new practicing teachers from two educator preparation programs, the qualitative analyses suggest that scaffolding through modeling, practice, and reflection have the strongest impact on how teacher candidates develop their Discourse and praxis.

Carbon Storage Via Mineral Bonding In Subsoils A Review Of Soil Processes, Kiele Goins

Theses and Dissertations

Soil is an important but often poorly understood portion of the carbon cycle. Soil can store more carbon than twice today’s atmosphere, but the factors that control carbon storage are often unclear. Carbon enters the soil through input of organic matter, erosion, and aerosol deposition and is lost mostly via microbial decomposition. Carbon loss in soil is impacted by the chemical composition of organic compounds, environmental factors, and human activities. Furthermore, as climate changes soil, carbon storage may be vulnerable. Although carbon can be stored throughout soil, carbon storage varies with depth. In topsoil, carbon is stored for short periods …

The Impacts Of An Online Planning Tool On Online Co-Teaching Practices During A Pandemic, Jeffrey Todd Harrell

Theses and Dissertations

Co-teachers at three Atlanta area schools are not providing the appropriate instruction to students with disabilities in the co-teaching setting due to the lack of collaboration in planning and teaching. The purpose of this action research was to evaluate the impact of the use of Microsoft Teams (MS Teams) as an online planning tool on the practices and responsibilities of general and special education co-teachers in the online co-teaching setting along with exploring teachers’ perceptions of the use of this online planning tool during a pandemic at three Atlanta area schools to make recommendations for its future use.

The study …

Solvent Effect Modeling In Heterogenous Catalysis, Mehdi Zare

Theses and Dissertations

In recent years, the biorefining industry and biofuels have emerged as a major American energy sector. Biofuels are fuels produced from plant and animal material, also referred to as biomass. This includes wood products, manure, and corn, among other materials. Compared to fossil fuels, biofuels are significantly more environmentally friendly and thus pose less of a threat to environmental health. In 2019, the United States consumed around 14.54 billion gallons of ethanol and around 1.81 billion gallons of biodiesel. By 2030, the United States is expected to consume around 95 Mtoe of biofuels. In order to meet current demand and …

Neural Synchrony During Naturalistic Language Perception In Listeners With Aphasia, Lisa Johnson Norris

Theses and Dissertations

Neural synchrony across listeners during language processing has been found to be associated with successful comprehension in neurotypical adults. At initial presentation of auditory-visual stimuli, neural responses appear to oscillate in different rhythms across brain regions. As the stimulus progresses, the time course of neural activity synchronizes across listeners, particularly in primary auditory and visual processing regions. This phenomenon, which we refer to as ‘neural entrainment,’ has been observed in neurotypical individuals attending to the same stimulus. Neural synchrony occurs due to the inherent neural response elicited by a stimulus and has been shown to be consistent across participants in …

Student Perceptions Of Their Engagement With Online Writing As Influenced By Their Teacher’S Presence At A Virtual High School: A Mixed Methods Study, Adrienne Harvie

Theses and Dissertations

This convergent mixed-methods action study explored the virtual high school student perception of how their engagement on writing assignments is affected by the presence of their English teacher in an online class. Research questions specifically focused on how teacher presence in the virtual classroom affects student engagement in online writing assignments. Another question asked how students perceive teacher presence in the virtual classroom and the third question examined how students perceived their engagement in online writing assignments is affected by teacher presence.

In this study two English teachers at a virtual high school were mentored by the researcher to increase …

Simulation-Based And Data-Driven Approaches To Industrial Digital Twinning Towards Autonomous Smart Manufacturing Systems, Kaishu Xia

Theses and Dissertations

A manufacturing paradigm shift from conventional control pyramids to decentralized, service-oriented, and cyber-physical systems (CPSs) is taking place in today’s Industry 4.0 revolution. Generally accepted roles and implementation recipes of cyber systems are expected to be standardized in the future of manufacturing industry. Developing affordable and customizable cyber-physical production system (CPPS) and digital twin implementations infuses new vitality for current Industry 4.0 and Smart Manufacturing initiatives. Specially, Smart Manufacturing systems are currently looking for methods to connect factories to control processes in a more dynamic and open environment by filling the gaps between virtual and physical systems.

The work presented …

Towards Understanding Therapy Response In Chronic Aphasia, Sigfus Kristinsson

Theses and Dissertations

It remains largely unclear what factors determine who responds to aphasia therapy and to what degree. The current study sought to ameliorate this issue by addressing three aims: 1) To identify baseline predictors that dissociate between therapy responders and nonresponders, 2) to identify predictors of degree of treated recovery in therapy responders, and 3) to examine the generalizability of predictors identified under Aims 1 and 2 in randomly selected subsamples of study participants.

Method: Stroke survivors (N = 102; 43 females; age = 60.5y +/- 11.0y) with chronic aphasia (>12m post-stroke) were recruited as part of a multisite trial. …

Using Graphic Organizers And Spreadsheets To Increase Quantitative Literacy Skills In High School History Students, Bruce Alexander Thames

Theses and Dissertations

Students are leaving high school and college with insufficient Quantitative Literacy (QL) skills to fully understand lifelong decisions about citizenship, personal finances, and healthcare. These quantitative skills are not taught consistently across the curriculum, which prevents students from making connections across multiple courses and correctly applying math skills beyond the classroom. The purpose of this action research was to evaluate the effectiveness of graphic organizers, spreadsheets, and authentic data on the QL skills of 11th grade students enrolled in an honors level United States History class enrolled at a suburban NJ high school (SHS).

This study focused on two overarching …

Genetic And Epigenetic Regulations Of Eds1-Mediated Plant Immunity And Identification Of Bacterial Type Iii Effectors Targeting De Novo Dna Methyltransferase Drm2 In Arabidopsis, Ming Zhao

Theses and Dissertations

In Arabidopsis thaliana, Enhanced Disease Susceptibility1 (EDS1) acts as an indispensable hub in plant immunity and is mainly responsible for plant basal defense, systemic acquired resistance (SAR), increase of endogenous content of salicylic acid (SA) and effector-triggered immunity (ETI). Epigenetic regulators play crucial roles in multiple important cellular processes. As one catalytic core of Polycomb Repressive Complex (PRC2), CURLY LEAF (CLF/SDG1) protein promotes H3K27me3 deposition at specific loci for genes repression. In this work, I found that EDS1 interacted with epigenetic regulators SDG1, SDG9, SDG15, SDG22 and SDG35 in yeast two-hybrid assays. The growth of the bacterial pathogen Pseudomonas …

Evaluation And Implementation Of The C-Pen On The Reading Level, Comprehension, And Oral Reading Fluency Of Third-Grade Students With Learning Disabilities: An Action Research Study, Kawanna Mckenzie

Theses and Dissertations

Third-grade students with learning disabilities struggle to meet reading proficiency levels at both the national and local levels. The appropriate support, services, and instruction of students with learning disabilities can help them achieve reading proficiency. Specific educational laws have been implemented to enable students with learning disabilities to use assistive technologies such as text-to-speech tools to support their reading. The purpose of this action research study was to evaluate the impact of a text-to-speech tool—the C-Pen—on the reading skills of third-grade students with learning disabilities at an elementary/middle school. The focus of this study was on three main research questions …

Does The Tendency Of Loss Aversion Depend On The Level Of Competition? Evidence From Multilevel Esports Tournaments, Zeqing Mao

Theses and Dissertations

This dissertation investigates the relationships between the level of experience, the magnitude of payoffs, and the significance of loss aversion within the context of esports. In the behavioral economics literature, loss aversion describes why individuals prefer avoiding losses to obtaining equivalent gains depending on a reference point. While previous studies predominantly capitalize on experimental methods to examine how the significance of loss aversion is affected by market experience and payoff magnitude, there is also a growing body of research that examines the behavioral properties of loss aversion outside laboratory environments, with sport being one of the most utilized settings. This …

The Impact Of Reading Intervention Supports On Adolescent Reader Identity, Erin Christine Doty

Theses and Dissertations

This case study research aimed to uncover how adolescent students describe their experiences with reading intervention and what aspects of their school experiences they see as contributing to their reader identity. Previous research done with or about adolescent students in reading intervention programs has demonstrated a need for a deeper understanding of students’ perspectives of reading intervention and its impact on reader identity as well as an understanding of how these interventions position students as learners. Using a case study approach, data was collected with three eighth grade students who have participated in reading intervention programs for more than three …

Preliminary Outcomes And Feasibility Of A Brief Online Teacher Training In Culturally Responsive Practices (Crp) To Reduce Disproportionate Discipline In Prek-3rd Grade Classrooms, Samantha Noelle Hartley

Theses and Dissertations

School discipline policies that rely on exclusionary discipline practices, such as office discipline referrals, suspensions, and expulsions, negatively and disproportionately impact racial minority students, beginning in preschool. Disproportionate discipline persists even when schools implement schoolwide interventions that reduce overall rates of exclusionary discipline, suggesting that schools must do more to address other likely causes of the discipline gap, including implicit racial bias, insufficient teacher training in classroom management, and a cultural mismatch between schools and minority students. There has been an increased call for teacher professional development in culturally responsive behavior management practices, but such interventions are often poorly evaluated …

Models In Scientific Inquiry, Justin Price

Theses and Dissertations

This dissertation studies how models become useful for scientific inquiry. Towards this study, I develop a theory on the cross-discipline transfer of mathematical models. The first part of this theory characterizes the way in which scientists must respond to the constraints in making a transferable model useable in their discipline. I invent the notion of a landing zone to identify the aspects of their domain that scientists prepare for the use of a transferrable model. The second part connects this response-to-constraints to cases of conceptual progress resulting from model transfer in biology and chemistry. The last part of this dissertation …

Influential Factors Of School Culture On Teacher Self-Efficacy And Motivation: An Ethnographic Case Study, Katrina Washington Rouse

Theses and Dissertations

The goal of this qualitative study was to determine the influence of teacher perception of ownership and empowerment on teacher self-efficacy and motivation. Tools of ethnography were used to create a descriptive narrative of teacher perceptions. Data was collected through focus group and individual interviews.

Results show that teacher perception of ownership and empowerment can influence teacher self-efficacy and motivation. Even though most teachers are intrinsically motivated, teachers still wanted to feel valued. Other factors that influence teacher perceptions of ownership and empowerment included relationships with colleagues and opportunities for shared leadership

This study concludes that teacher perception of ownership …

Mix It Up: Blended Collaborative Professional Development To Impact High School Teacher Efficacy, Briana Ghan

Theses and Dissertations

The purpose of this action research was to explore how a blended collaborative approach to professional development can influence teachers’ efficacy, collective efficacy, and collaboration in high school teachers. Three questions guided this study: (a) How and to what extent does teacher efficacy change with participation in a blended collaborative form of professional development?, (b) How and to what extent does collective teacher efficacy change with participation in a blended and collaborative form of professional development?, and (c) How does participation in a blended collaborative form of professional development affect sharing amongst participants?

Bandura’s sources of efficacy and the characteristics …

Exploring Adult Basic Education Student Satisfaction: Influencing Factors And Programmatic Responses, Carol Current Hill

Theses and Dissertations

With the goal of improving student satisfaction, one local program, the Frances County Adult Education (FCAE) system, chose to create a systemic initiative named Honoring Adult Behaviors and Influencing Thinking Skills. This dissertation in practice explored two questions: 1) What benefits do students expect to receive as a result of student participation in the Frances County Adult Education program? and 2) How does implementation of the Honoring Adult Behaviors and Influencing Thinking Skills (HABITS) initiatives, inclusive of Habits of Mind curriculum and Integrated Educational Training, impact student satisfaction with Frances County Adult Education? Based on two theories, three-factor satisfaction and …

The Impact Of A Professional Learning Community (Plc) On 10 Early Career Teachers Who Seek To Understand The Meaning And Practice Of Teacher Leadership, Laura Alsbrooks Goldzung

Theses and Dissertations

Early career teachers are eager to engage in leadership given supportive cultural conditions, relevant training and development, and school structures encourage all members to contribute to the teaching process. The aim of this action research study was to explore the meaning and practice of teacher leadership with 10 early career teachers through participation in an eight-week professional learning community (PLC) book study. Selected readings informed group discussion topics and reflections in journal entries. Qualitative data analysis revealed three themes that work in concert to create conditions that support teacher leadership at ABC Elementary School (ABCES): communication, professional trust, and a …

Using Blended Learning And Writing Conferences To Develop High Schoolers’ Writing Skills And Self-Regulated Learning, Ashley Nicole Galloway-Speight

Theses and Dissertations

Strong writing skills are an essential element in all areas of life. Written communication is pervasive in both daily life and the workplace. Yet nationwide studies reveal that many students in America graduate from high school with insufficient writing skills. Studies on writing instruction suggest that a shift to teaching writing as a process rather than a product, presentation of quality individualized, focused feedback, and teaching of metacognitive writing skills can help improve writing skills in high school students. The purpose of this mixed methods action research was to determine how the supplemental use of face-to-face writing conferences combined with …

Factors To Integrate Technology For Student Collaboration In The Elementary School: An Action Research Study, Lisa Roseanne Goldey

Theses and Dissertations

The problem of practice in this research study focused on the inconsistent use of Google Workspace for Education Fundamentals (formerly G Suite for Education) for student collaboration. The purpose of this action research was to investigate how elementary teachers used Google Workspace for Education Fundamentals for student collaboration during the COVID-19 pandemic. The goal was to make recommendations for technology integration in Grades 3 through 5 in a school in central New Jersey.

The focus of this study was on three overarching research questions: 1. How do elementary teachers at a school in central New Jersey integrate technology using Google …

Impact Of Flipped Learning On High School Students’ Motivation, Cognitive Load, And Perceptions Of Flipped Approach For Learning Science, Lucas Charles Conner

Theses and Dissertations

The purpose of this action research was to evaluate the impact of flipped learning using self-paced video on students’ motivation, cognitive load, and science content learning in an Earth Science course at a small rural high school in southwestern Virginia. Scientific interest and proficiency among students in the United States have been low. This has significant implications for students’ future career prospects. At the same time, the predominant method of science instruction, the single-paced lecture, presents its own limitations for student learning and motivation. Single-paced methods can limit the accessibility of instruction for students, limiting the development of critical scientific …

Differentiated Experiential Learning Through Play As Supplemental Support For Prekindergarten Students, Charles S. Reed

Theses and Dissertations

This mixed methods action research study examined prekindergarten students in a Title I program and the impact of differentiated experiential learning though play on their attitudes and learning of mathematical skills as measured by a standardized test. The identified problem of practice involved students not being given enough differentiated experiential learning through play opportunities. The research questions that guided this study are as follows: 1) What are the attitudes/perspectives of the parents, educators, and administrators on the value of play in early childhood education? 2) How does providing experiential learning through play impact students’ attitudes toward math? 3) How does …

Views Of Substance Use During Pregnancy: Social Responses To The Issue, Taylor Ruddy

Theses and Dissertations

Ever since the emergence of the crack cocaine epidemic and “crack babies”, our society has been concerned with women using substances during their pregnancy. The most appropriate response to this social issue has been heavily debated. Some think that the use of criminal justice initiatives and criminalization is the most effective method in deterring women from using while pregnant, and some promote utilizing public health methods to rehabilitate addicted women. There is a wealth of research and literature around this debate, however, there has not yet been any research examining public opinion on the most appropriate ways to handle this …

The Impact Of A Four-Station Blended Learning Model Of Differentiating Instruction On Student Engagement In A Middle School Chinese I Class In A Southeastern State, Junlan Li

Theses and Dissertations

The purpose of this action research was to examine the impact of the proposed Four-Station Blended Learning Model (FSBLM) on the engagement level of four middle school students in a Chinese as a foreign language class. For the purposes of the study, student engagement is defined by three aspects: (1) participation in class activities, (2) classwork completion, and (3) student perceptions of Chinese class. Incorporating an action research design, data was collected through utilizing Likert-scale pre- and post-surveys, pre- and post-interviews, observations and the taking of field notes, students’ work samples, and classwork grades. Both qualitative and quantitative data were …