Digital Commons Network^™

Tennessee's Voluntary Prekindergarten (Vpk) Program And Kindergarten Achievement, Kindetta L. Thompson

Electronic Theses and Dissertations

The purpose of this quantitative study was to investigate whether there is a relationship between Tennessee's Voluntary Prekindergarten (VPK) program and kindergarten achievement. I compared the academic growth of who attended a VPK program to students in Title 1 schools who did not attend a VPK program. Kindergarten gives the first easyCBM assessment in the second semester of school. I compared the easyCBM scores of the students who attended a VPK program to the ones who did not attend a VPK program. This could reveal if attending the VPK program is related to the students’ academic growth and the amount …

Partially Oriented 6-Star Decomposition Of Some Complete Mixed Graphs, Kazeem A. Kosebinu

Electronic Theses and Dissertations

Let $M_v$ denotes a complete mixed graph on $v$ vertices, and let $S_6^i$ denotes the partial orientation of the 6-star with twice as many arcs as edges. In this work, we state and prove the necessary and sufficient conditions for the existence of $\lambda$-fold decomposition of a complete mixed graph into $S_6^i$ for $i\in\{1,2,3,4\}$. We used the difference method for our proof in some cases. We also give some general sufficient conditions for the existence of $S_6^i$-decomposition of the complete bipartite mixed graph for $i\in\{1,2,3,4\}$. Finally, this work introduces the decomposition of a complete mixed graph with a hole into …

Applying Deep Learning To The Ice Cream Vendor Problem: An Extension Of The Newsvendor Problem, Gaffar Solihu

Electronic Theses and Dissertations

The Newsvendor problem is a classical supply chain problem used to develop strategies for inventory optimization. The goal of the newsvendor problem is to predict the optimal order quantity of a product to meet an uncertain demand in the future, given that the demand distribution itself is known. The Ice Cream Vendor Problem extends the classical newsvendor problem to an uncertain demand with unknown distribution, albeit a distribution that is known to depend on exogenous features. The goal is thus to estimate the order quantity that minimizes the total cost when demand does not follow any known statistical distribution. The …

Using An Inventory Of Unstable Slopes To Prioritize Probabilistic Rockfall Modeling And Acid Base Accounting In Great Smoky Mountains National Park, Thomas A. O'Shea

Electronic Theses and Dissertations

An inventory of unstable slopes along transportation corridors and performance modeling are important components of geotechnical asset management in Great Smoky Mountains National Park (GRSM). Hazards and risk were assessed for 285 unstable slopes along 151 miles of roadway. A multi-criteria model was created to select fourteen sites for two-dimensional probabilistic rockfall simulations and Acid Base Accounting (ABA) tests. Simulations indicate that rock material would likely enter the roadway at all fourteen sites. ABA test results indicate that influence of significant acid-producing potential is generally confined to slaty rocks of the Anakeesta Formation and graphitic schist of the Wehutty Formation. …

Data Science And The Ice-Cream Vendor Problem, Makafui Azasoo

Electronic Theses and Dissertations

Newsvendor problems in Operations Research predict the optimal inventory levels necessary to meet uncertain demands. This thesis examines an extended version of a single period multi-product newsvendor problem known as the ice cream vendor problem. In the ice cream vendor problem, there are two products – ice cream and hot chocolate – which may be substituted for one another if the outside temperature is no too hot or not too cold. In particular, the ice cream vendor problem is a data-driven extension of the conventional newsvendor problem which does not require the assumption of a specific demand distribution, thus allowing …

Nitrogen-Doped Carbon Fiber Ultramicroelectrodes As Electrochemical Sensors For Detection Of Hydrogen Peroxide, Eric Wornyo

Electronic Theses and Dissertations

Carbon fiber ultramicroelectrodes (CF-UMEs) are commonly used as electrochemical probes and sensors due to their small size, fast response, and high signal-to-noise ratio. Surface modification strategies are often employed on CF-UMEs to improve their selectivity and sensitivity for desired applications. However, many modification methods are cumbersome and require expensive equipment. In this study, a simple approach known as soft nitriding is used to prepare nitrogen-doped CF-UMEs (N-CF-UMEs). Nitrogen groups introduced via soft nitriding act as electrocatalytic sites for the breakage of O-O bonds during the reduction of peroxides like H₂O₂, a common target of biosensing strategies. …

Synthesis Of The Diazonium Zwitterionic Polymer/Monomer For Use As The Electrolyte In Polymer Electrolyte Membrane (Pem) Fuel Cells, Josiah Marshall

Electronic Theses and Dissertations

My research goals are to synthesize new zwitterionic perfluorosulfonimide (PFSI) monomer/polymers. They are expected to replace traditionally used perfluorosulfonic acid (PFSA) polymers as the electrolyte in PEM fuel cells. For the PFSI monomer preparation, we designed a nine-step synthesis route. Thus far, I have successfully completed the synthesis of 4- (2-bromotetrafluoroethoxy)-benzenesulfonyl amide, 4-acetoxybenzenesulfonic acid sodium salt, and 4-chlorosulfonyl phenyl acetate. The coupling reaction of 4-(2-bromotetrafluoroethoxy)- benzenesulfonyl amide with 4-chlorosulfonyl phenyl acetate, was troublesome due to slow reaction kinetics and byproducts. Additionally, I did a methodology study for the homopolymerziation of the perfluoro 3(oxapent-4-ene) sulfonyl fluoride monomer. We compared the weight …

Synthesis Of Flagellin 22 As A Probe For Plant Signaling And Molecular Trafficking Towards Improved Crops, Edward Offei

Electronic Theses and Dissertations

Plant signaling involves the transport of information within and between plant cells from receptors to effectors. Plants are affected by biotic and abiotic stress conditions like insect attack and extreme temperatures, respectively, which cause disease, the induction of senescence and the reduction of crop yield. To improve plant traits for feed, fiber, and energy applications, it is critical to understand the short- and long-range signaling mechanisms plants use to control growth, biomass composition, senescence and responses to environmental stresses. It is known that many plant signaling molecules have profound effects on plants, through mechanisms that remain largely obscure. A key …

Economic And Sociological Factors Associate With First-Year African American Students' Enrollment In Historically Black Colleges And Universities., Vickie Gale Bridgeman

Electronic Theses and Dissertations

Despite the long struggle to gain access, African Americans always have valued education. Historically Black colleges and universities (HBCUs) were established to educate Blacks. The racial integration of predominately White institutions (non-HBCUs) in the 1960s led to decreased enrollments in HBCUs and challenged their relevance. The purpose of this study is to discover what factors influence African American students to choose an HBCU today. Quantitative, secondary survey data methods were used to conduct the study. African American students at HBCUs and non-HBCUs participated in the survey. Consistent with generally accepted approaches in analyzing student college choice, this study utilized logistic …

Predictive Modeling Of Clinical Outcomes For Hospitalized Covid-19 Patients Utilizing Cytof And Clinical Data., Onajia Stubblefield

Electronic Theses and Dissertations

In December 2019, an outbreak of a novel coronavirus initiated a global pandemic. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a virus that causes the disease coronavirus disease 2019 (COVID-19). Symptoms of infection with COVID-19 vary widely between individuals. While some infected individuals are asymptomatic, others need more extensive care and require hospitalization. Indeed, the COVID-19 pandemic was characterized by a shortage of hospital beds which presented additional complications in providing adequate care for patients. In this study, we used a combination of T cell population data collected from mass cytometry analysis and clinical markers to form a predictive …

Servant Leadership And Conflict Adaptivity In Local Government Leaders, June F. Mighty

Electronic Theses and Dissertations

Government organizations’ focus on public service provides a fertile ground for conflict due to competing interests and goals. Conflicts exist and persist because of workplace pressures such as unstable political climates, budget restrictions, technological advances, a diverse workforce, disruptive change, and organizational transformation. Although typically risk-averse, these organizations need flexible and adaptive leaders who exhibit the appropriate behaviors in the best interests of the organization and the community. Servant-leaders seem likely to demonstrate conflict adaptivity due to their focus on serving the needs of followers and other stakeholders, which may require different conflict styles at different times and in different …

Using Modified Cover-Copy-Compare To Increase Math Fact Fluency And Promote Generalization, Juan Chen

Electronic Theses and Dissertations

Many elementary school students struggle with basic math fact fluency in the United States (Stickney et al., 2012). Cover-Copy-Compare (CCC) is a widely used intervention strategy that helps students who experience math fact fluency delays. This study aimed to modify CCC to improve four students’ math fact fluency. This study also aimed to modify CCC to generalize the target skill to more advanced skills. It was hypothesized that the intervention would increase participants’ target item fluency. It also hypothesized that the intervention would facilitate generalization to untrained target items and more difficult items. However, due to the impact of COVID-19, …

Analysis Of Disproportionality In Discipline And The Effects Of Positive Behavior Supports Within Special Education, Cutler T. Ruby

Electronic Theses and Dissertations

Nationwide, school districts are required (IDEA, 2004) to implement positive behavior interventions and supports (PBIS) for all students receiving special education services. These PBIS are reported to reduce problem behaviors and increase prosocial behaviors when implemented with fidelity (Crone et al., 2015). With a reduction of problem behaviors an expected reduction of discipline referrals should follow along with a reduction in days spent in exclusionary discipline for students in special education. Reducing days in exclusionary discipline is desired due to a strong research base linking the practice to several negative outcomes (Marchbanks et al., 2015) along with data demonstrating these …

Traditional And Alternative Certification Programs And Their Effect On Elementary School Teachers’ Efficacy Beliefs In Title I And Non-Title I Schools, Rita Gale Sullivan

Electronic Theses and Dissertations

School districts across the United States face the challenges of teacher shortages and rely heavily on alternative certification programs to fill teaching positions. Over the last decade, researchers question the quality of fast-track teacher preparation programs compared to traditional educational paths. This quantitative, causal-comparative study examined two methods of obtaining teacher certification (traditional and alternative) and their impact on novice teacher self-efficacy levels in Title I and non-Title I schools. Elementary teachers with five years or less of experience, traditionally and alternatively certified, were asked 24 questions using the Likert-type Teachers’ Sense of Efficacy Scale on student engagement, instructional practices, …

Mineralogical Restrictions On Porosity In The Taylor Sand Of The Cotton Valley Group, Northern Louisiana Salt Basin, Claiborne Parish, Louisiana, Kaleb C. Mcclain

Electronic Theses and Dissertations

The Cotton Valley Group has been targeted for hydrocarbons since the 1940s. However, the reservoir was initially considered uneconomical to drill due to its low permeability and porosity. Since then, recent technological advances in hydraulic fracturing have allowed the Cotton Valley Sandstone members to become prolific, profitable plays, renewing interest in drilling and exploration across the northwest/northern Louisiana region.

In this research, mineralogical restrictions on the porosity in the Lower Taylor Sand of the Cotton Valley Group were studied from core (10,035’ft/3,059m -10,150’ft/3,094m) from Blackburn Field, northwest Claiborne Parish. Twelve samples were taken at intervals throughout the Taylor Sand, starting …

Precambrian Basement Influence On The Deposition Of The Upper Ordovician Utica Shale Play In East Central Ohio, William Kaleb Kirk

Electronic Theses and Dissertations

The Ordovician Utica shale play is a major oil and gas producing interval in the Appalachian Basin. The Utica shale play can be found as far as New York and Canada and to the south into Indiana and Kentucky. The play consists of the Trenton/Lexington limestones, Point Pleasant Formation, and Utica shale. The shallow marine fossiliferous limestones of the Trenton and shallow marine shaley limestones of the Lexington are overlain by an interbedded shale and limestone of the Point Pleasant Formation, which grade into the deeper marine interbedded shales and limey shales of the Utica. These formations are highly heterogeneous, …

Deposition And Diagenesis Of The Blossom Sand, Panola County, Texas, Hannah Chambers

Electronic Theses and Dissertations

The Late Cretaceous Blossom Sand within the Austin Group is a historic gas reservoir in the East Texas basin, located at depths of approximately 2,000 ft below the surface. Since the discovery of the Carthage Field in 1918 in the East Texas Basin, the Blossom Sand has produced approximately 26 BCF of gas with minor amounts of oil. Despite its notoriety in the Carthage Field, there is very little research that has been conducted on this unit, although it crops out in northeast Texas and is found in the subsurface of southwest Arkansas, western Louisiana, and the East Texas Basin. …

Experiences That Support Persistence And Retention Of Latinx First-Generation College Students (Fgcs) At Community Colleges, Veronica Rios

Electronic Theses and Dissertations

The purpose of this instrumental case study was to describe experiences of successful Latinx first-generation college students that support persistence and retention toward graduation for Latinx first-generation college students at California community colleges. The study was framed using Tinto’s retention theory. Successful Latinx first-generation college students were defined as those who have attained graduation from a California community college. This study focused on Latinx first-generation college students not persisting toward graduation at California community colleges, a situation that extends to the national level. This case study included nine Latinx first-generation college students, and the researcher collected data through virtual semistructured …

Best Practices For Instructional Coaching Feedback Strategies As Perceived By Effective Principals Of High At-Risk Schools, Angela P. Steward

Electronic Theses and Dissertations

High-poverty schools have historically been low-performing schools. However, with the right strategies and leadership, these schools can have improved student achievement. The purpose of this qualitative instrumental case study was to describe best practice instructional coaching feedback strategies as perceived by effective principals of high at-risk schools in Louisiana. This study was framed around the transformational leadership theory by principals who utilize instructional leadership methods in their respective schools. Participants in this case study included eight high school principals. All the principals had been on their respective campuses for a minimum of two years, including the last years that data …

Eastward-Propagating Planetary Waves In The Middle Atmosphere During Major Sudden Stratospheric Warming Events, Christian Todd Rhodes

Electronic Theses and Dissertations

No abstract provided.

Radiosonde High Altitude Measurements Of Radiation Levels And Cosmic Ray Events, Ayodeji Opeyemi Akinuliola

Electronic Theses and Dissertations

Just above us, cosmic rays are hurtling in from space. These fast moving particles crash uncontrollably into molecules in the atmosphere, causing spontaneous decays of these particles. Despite the fact that we are broadly shielded from this radiation on earth, these particles can still disturb humans and electronics alike. Therefore, this research focuses on expanding the use of long-range radio transmitters such as radiosondes to transmit valuable data such as cosmic ray flux, geographical position, atmospheric temperature, pressure, etc. This can improve real-time radiation monitoring for aviation industry crew and passengers working in potentially higher radiation environments. On March 11, …

Get Ready For Future Education: A Phenomenological Study On Artificial Intelligence, Son T. H. Pham

Electronic Theses and Dissertations

Artificial intelligence (A.I.) brings new opportunities for social construction. This phenomenological research attempted to analyze the phenomenon of artificial intelligence in education, grounding in American philosophy, with a review of the history of A.I. in education, its promise, and possible futures. The primary purpose of the study was to share voices and lived experiences of educators, philosophers, industrialists and politicians toward the coming high-tech society. Fundamental to this philosophical inquiry was Heideggerian interpretive phenomenology. The findings from eight intellectuals participating in this study elucidated five themes of the investigated phenomenon. Together these empirical indicators, and an outline of philosophy of …

The Phenomenology Of Conversion, Paul Digeorgio

Electronic Theses and Dissertations

The goal of this dissertation is to offer a systematic phenomenology of the conversion experience based primarily on the transcendental method of Husserl. Conversion is an empirical phenomenon that, when phenomenologically analyzed, is revealed to have several eidetic or essential features that shape any conversion in general. After reviewing the secondary literature on conversion, I construct a synthetic account of the empirical experience. I then sketch the transcendental phenomenological method and proceed to evaluate conversion as a firsthand experience in the “natural attitude” which is necessary in order to ensure that I can exclude or bracket all of the assumptions …

Rhetoric And Philosophy Of Communication In Jorge Luis Borges' Metaphysical Obsession With Time, Aurora M. Pinto

Electronic Theses and Dissertations

This project begins with the assumption that through storytelling we humans make sense of the world around us. Language and communication are powerful in defining who we are and allowing individuals to “become a self” (Taylor The Language 318). Drawing from Schrag, I argue that rhetoric is inextricably linked to discourse but is also situated beyond its classical persuasive function. Rhetoric evokes a response from the other, based on reflection and deliberation. Since that other might be a reader of texts of fiction, there is a rhetorical connection to interpretation that situates literature as an exemplar of communicative engagement.

This …

A Theoretical Framework For Effective Education In Rural High-Poverty Schools, Harley Ramsey

Electronic Theses and Dissertations

This study investigated “why” some educational leaders are effective in serving rural high-poverty populations and to better understand “how” to enact effective leadership in similar spaces. Core principles of Critical Social Theory, Systems Leadership Theory, and Emotional Intelligence informed this work. Using a Grounded Theory methodology, a theoretical framework for effective educational leadership in rural high-poverty schools emerged. This framework suggests that effective educational leaders take a systems leadership approach to guiding their organizations to more equitable and socially just ends. Such leaders honor student and family voices and actively seek to understand and respond to their lived realities. They …

Diagnosis Of Melanoma Disease State From Patient Blood Samples Using Photoacoustic Flow Cytometry, Jacob Salvatore

Electronic Theses and Dissertations

Approximately 1 in 50 Americans develop melanoma in their lifetime. Early detection of melanoma is pivotal to the survival of the patient, with a 99% survival rate for 5 or more years after an early diagnosis. Metastasis, or the spread of cancer, increases the chances of cancerous growth in other parts of the body. In this study, we propose the use of photoacoustic flow cytometry as a diagnostic of patient disease state, by closely monitoring the amount of circulating melanoma cells (CMCs) in a patient’s blood before and after chemotherapy treatments. Using this patient data, we were able to make …

Rural Elementary Teacher Beliefs Regarding The Effectiveness Of Their Homework Practices During The Pandemic, Daniel Clara

Electronic Theses and Dissertations

Through the lenses of C.S. Peirce’s Belief and Genuine Doubt, Albert Bandura’s Self Efficacy and Collective Efficacy, Bernard Weiner’s Attribution Theory, and Critical Race Theory, this dissertation captured and codified rural elementary teacher beliefs regarding homework and its effectiveness related to learning, and in particular, the effects brought on by the 2020 COVID 19 school closure. Rural school systems are under-researched and present notable differences in homework challenges, including access to libraries, technology and distance from home to school. Using qualitative research, this study identified themes regarding teacher perceptions of homework. The author explained that many of the long-held tenants …

Computational And Experimental Studies Of Functionalized Phenolic Tertiary Phosphine Oxides As Organocatalysts For The Redox-Neutral Mitsunobu Reaction, Sadie Brown

Electronic Theses and Dissertations

The purpose of this thesis was the identification of a more efficient catalyst analog that could perform the redox-neutral Mitsunobu reaction, which was achieved via two synthetic pathways: elimination-addition and addition-rearrangement. Furthermore, a computational investigation was conducted on the conflicting interpretations of the catalytic cycle. Our research group replicated Houk et al. work, as well as expanded the computations to examine the influence different functional groups had on the ground state and transition state structures. Important ground state and transition state structures were determined, which provided a more energetically favorable pathway of the catalytic cycle. Experimental work demonstrated that both …

Quantification Of Persistent Organic Pollutants In Various Matrices Using Stir Bar Sorptive Extraction And Isotope Dilution Mass Spectrometry, Weier Hao

Electronic Theses and Dissertations

A method was developed to quantify persistent organic pollutants (POPs) in a wide range of matrices including wastewater, dietary supplements, and human whole blood using stir-bar sorptive extraction, GC-MS/MS, and isotope dilution mass spectrometry (IDMS). The method enabled accurate, precise, sensitive, and efficient quantification of POPs in these matrices. Compared with calibration curves, IDMS provided measurements with a higher level of accuracy and precision, especially at lower measured concentrations. The use of GC-MS/MS enabled a lower limit of quantification compared with GC-MS. A reverse-IDMS method was performed to further eliminate biases from the labelled concentrations of the commercially available standards. …

Civil Religion And The Second Amendment, Shivaun Corry

Electronic Theses and Dissertations

The American approach to legal hermeneutics emerged from the covenant theology of the Puritans. American civil religion understands the Constitution to be based in natural laws: a secularized conception of God-given rights. To change the text would collapse the epistemological framework of the nation. When a nation sees its constitution as a sacred text, then the answer to contemporary problems cannot be to change that text; rather, it must be to return to the text with an even more fundamentalist hermeneutic. Both gun rights advocate Charlton Heston, and gun control advocate Barak Obama, argued their cases using a fundamentalist hermeneutic, …