Digital Commons Network^™

Improving The Adelic Version Of The Minkowski-Hlawka Theorem, Fatmah Alnaser

Graduate Research Theses & Dissertations

In this dissertation we take a method developed by Schmidt to improve the classical version of the Minkowski-Hlawka Theorem and extend that to certain number fields. This leads to an analogous improvement to the adelic Minkowski-Hlawka Theorem in certain cases. We also demonstrate that the adelic version, even in the case where the number field is the field of rational numbers, is more general than the classical version.

Examining Early Word Recognition Instruction: Synthetic Phonics Vs. Analytic Phonics, Jenelle Gallagher-Mance

Graduate Research Theses & Dissertations

This single subject experimental design study used an adapted alternating treatment design to examine the effects of a synthetic phonics intervention and an analytic phonics intervention on oral reading accuracy, oral reading rate, and letter-sound correspondences among first grade students. Students who were reading at least two levels below guided reading level expectations and scored below the 25th percentile on the AIMSweb R-CBM (2017) fluency probe and the Words Their Way Primary Spelling Inventory (Baer et al., 2007) were selected to participate in the study. Five participants received daily instruction based on a synthetic phonics intervention (systematic directed phonics) or …

Christianity And Mental Health Counseling: Voices Of The Black-Negro American Experience, Kyle Preston Goodwin

Graduate Research Theses & Dissertations

The narration of the lived experiences of Black-Negro Christian Americans in relation to mental health counseling services is vital because opportunities for researchers and clinicians to hear their voices instead of a story written for them by the leading culture is created. Specifically, when it comes to Black-Negro spirituality and religion as part of Black-Negro culture, it is one of the most beautiful and intriguing experiences that exists. A critical theory paradigm is being used for how knowledge is created and disseminated for the purposes of social change. Narrative Qualitative research is used to capture the Black-Negro voice, along with …

Nigerian Media: A Comparative Media Analysis, Temilade Inumidun Adeeko

Graduate Research Theses & Dissertations

The comparative media analysis of Nigeria using Hallin and Mancini's model provides an insightful examination of the country's media system. Hallin and Mancini's model analyzes four dimensions: the degree of state intervention, the degree of political parallelism, the level of journalistic professionalism, and the role of the state. They offer three models of media and politics: The Liberal model, the Democratic Corporatist, and the Polarized Pluralist. Nigeria’s media system is characterized by high state intervention and political parallelism, significant control over media content by the state, a close relationship between the media and political parties, and a low level of …

The Relationship Between Campus Dining, Student Learning, And Student Success, John Boswell

Graduate Research Theses & Dissertations

Campus dining does more than provide sustenance to a campus community. Campus dining is an integral part of student success and learning. Limited research has looked at the impact of campus dining, particularly in the areas of student success and learning. The purpose of this qualitative case study was to explore how campus dining directors in the Mid-American Conference (MAC) perceived how themselves and their dining programs impact student learning and success. Data was collected through interviews with MAC campus dining directors and through observations made on their campus dining websites. Three themes emerged from the research on ways campus …

Herstory 101: Examining The Representation Gap Of Bipoc Women Educational Leaders, Kinasha Brown

Graduate Research Theses & Dissertations

Background/Purpose: The purpose of this study was to examine how lived experiences influenced perceptions of leadership self-efficacy amongst Black, Indigenous, or Person of Color (BIPOC) women educational leaders in order to minimize future representation gaps in educational leadership. Methods: Qualitative interviews were conducted with 14 BIPOC cis-gender female leaders who worked in a large school district in the southwestern region of the United States. Results: Examining the social constructs of race, gender, leadership makes clear how BIPOC women are socially constructed as inferior and how that played out in this educational leadership settings. The interconnectedness of both approaches contributes to …

Understanding The Impact Of Illinois’ Evidence-Based Funding Law: An Examination Of Spending For The First Three Years, Christopher T. Johnson

Graduate Research Theses & Dissertations

This dissertation comprises an examination of how school districts have allocated the resources they received as a result of the Illinois Evidenced-Based Funding (EBF) for Student Success law. The law was passed in 2017 with the rationale of providing additional resources to school districts based on evidenced-based approaches, with the vast majority of the funds to be allocated to districts in financial need. A brief history of school funding is extrapolated from the literature. An overview of the law and the resources that it brought to districts is then provided, followed by an analysis of how those resources were spent. …

Uruguayan Parents' Perceptions About Educational Segregation In Uruguayan Public Elementary Schools: A Case Study, Natalia Fernández

Graduate Research Theses & Dissertations

Educational segregation has been increasing across public elementary schools in Uruguay producing negative effects on students’ outcomes, performance, and opportunities. It also affects social cohesion. Previous studies detect the presence of educational segregation in Uruguay, identify the predominance of socioeconomic segregation in education in the country, and study the relationships between public and private institutions. A review of the extant literature demonstrates there is a gap in the exploration of the possible factors that contribute to the phenomenon. Moreover, there is a need to know the perceptions and experiences of Uruguayan families about the influence of these factors in their …

Evaluating The Impact Of Bitcoin On International Asset Allocation Using Mean-Variance, Conditional Value-At-Risk (Cvar), And Markov Regime Switching Approaches, Mohammadreza Mahmoudi

Graduate Research Theses & Dissertations

This paper aims to analyze the effect of Bitcoin on portfolio optimization using mean-variance, conditional value-at-risk (CVaR), and Markov regime switching approaches. I assessed each approach and developed the next based on the prior approach’s weaknesses until I ended with a high level of confidence in the final approach. Though the results of mean-variance and CVaR frameworks indicate that Bitcoin improves the diversification of a well-diversified international portfolio, they assume that assets’ returns are developed linearly and normally distributed. However, the Bitcoin return does not have both of these characteristics. Due to this, I developed a Markov regime switching approach …

Dynamic Overnight Effect On Next Day Stock Market Forecasting, Thomas J. Lee

Graduate Research Theses & Dissertations

Using a cross section of stocks that have high frequency trading data from 2007 to 2018, we document whether various intraday momentum patterns found in the financial literature over the years continue to hold over time. The first half hour return on the market is often seen as having predictive power over the last half hour of trading, or overnight returns are thought to reverse in the next day's first half hour of trading. We find that while there is some evidence for these patterns, especially in the earlier years, these patterns tend to weaken over time as investors take …

Coulomb Blockade-Mediated Field Emission Sources Using Ultra-Nanocrystalline Diamond, Jevin Jensen

Graduate Research Theses & Dissertations

Coulomb Blockade effects in field emission provide interesting means of achieving brighter electron sources for numerous applications, ranging from vacuum electronics to the next generation of electron beam technology. Microelectronics cleanroom methods are presented in this thesis for production of field emission sources moderated by the Coulomb Blockade. The use of common processes is an essential step toward widespread experimentation with Coulomb Blockade-mediated field emission apparatuses. The main feature to be explored is the use of nano-diamond films for their potential applicability for this desired outcome. Ultra-Nanocrystalline Diamond is used in two different ways to achieve this, both as a …

A Single-Case Alternating Treatments Design Utilzing Quantitative Electroencephalography To Observe And Measure Mental State Trends During Individual Participant Non-Nature-Based Small Initiative Adventure Therapy Experiences, Patrick Lane Robert Mcmillion

Graduate Research Theses & Dissertations

This single-case alternating-treatments design research study observed and measured mental state trends during the counseling approach known as Adventure Therapy (AT) using quantitative electroencephalography (qEEG). Participants wore a qEEG headset while participating in a multi-stage AT experience. Two problems were addressed in this study. The first was the lack of research in AT utilizing other empirical measures beyond subjective report surveys and the outcomes of specific programs. The second was the lack of neuroscientific measurement of counseling approaches and interventions within the field of counseling in general. There is a need for empirical evidence supporting AT to address access barriers …

Dietitians’ Self-Efficacy For Implementation Strategies And Evidence-Based Practice Guideline Implementation Behaviors: A Mixed Methods Study, Lisa Moloney

Graduate Research Theses & Dissertations

Background: Evidence-based practice (EBP) guidelines are valuable tools that can help promote the implementation of research into practice. Implementation of EBP guidelines can improve the standardization and quality of healthcare, but unfortunately, they are not routinely used in daily practice. Evidence-based practice is a core component of nutrition and dietetics practice, yet little is known about registered dietitian nutritionists’ (RDNs’) implementation of EBP guidelines. Purpose: The purpose of this study was to investigate RDNs’ reported self-efficacy for using implementation strategies and their reported implementation behaviors for EBP guidelines. Methods: An explanatory mixed methods study guided by the Theory of Planned …

Design And Cold Test Of A Metamaterial Accelerating Structure For Two-Beam Acceleration, Dillon Christopher Merenich

Graduate Research Theses & Dissertations

Structure-based wakefield acceleration (SWFA) is an advanced accelerator concept that can achieve higher accelerating gradients than conventional accelerators. Advanced structures are required for SWFA, with metamaterial (MTM) structures as a promising candidate. MTMs are periodic sub-wavelength structures engineered to exhibit exotic electromagnetic properties, such as simultaneously negative permittivity and permeability. Because of their unique electromagnetic properties, MTMs are particularly interesting to SWFA. Previous studies at the Argonne Wakefield Accelerator have demonstrated efficient wakefield power extraction using MTM structures. This thesis presents the design, fabrication, and cold test of an X-band MTM accelerating structure for two-beam acceleration. An MTM structure was …

Family Routines And Parental Warmth As Potential Protective Factors On The Relation Between Housing Instability And Child Outcomes, Joanna Keane

Graduate Research Theses & Dissertations

Housing instability is associated with numerous poor child outcomes in domains such as behavioral problems, emotional problems, and academic achievement. The impacts of housing instability on child outcomes are typically investigated in the context of sociodemographic risk; however, exploring the role of protective factors (e.g., family routines, parental warmth) in these contexts allows for a more thorough understanding of the effect of housing instability and how potential negative outcomes might be mitigated. The present study further explored the relation between early housing instability and child behavioral, emotional, and academic outcomes in middle-childhood in addition to the potential moderating role of …

Convection Allowing Simulations Of Hail In Historical And Future Climate Epochs, Jillian Rose Goodin

Graduate Research Theses & Dissertations

This thesis investigates the potential impact of anthropogenic climate change on hail frequency and intensity, which poses a significant threat to life and property, accounting for annual insured losses of around $30 billion in the U.S. This approach uses convection-allowing dynamically-downscaled regional climate simulations using input data from NCAR's bias-corrected Community Earth System Model to simulate historical and projected future climate regimes under two greenhouse gas emission scenarios. A column maximum diameter hail diagnostic is simulated by the Weather Research and Forecasting regional climate model to identify instances of hail days and size to quantify changes in large hail frequency …

Vanadium Partitioning Between Magnetite, Hematite, And A Hydrothermal Fluid: Implications For Iocg And Ioa Deposits, Jeremy Raymond Nederbo

Graduate Research Theses & Dissertations

Iron oxide-copper-gold (IOCG) and iron oxide-apatite (IOA) deposits are major sources of iron contained within magnetite and/or hematite as well as copper contained within copper-iron sulfides and gold as a native metal. Their formations have been attributed to magmatic, hydrothermal, or a mixture of magmatic-hydrothermal processes. Vanadium can readily substitute into magnetite via ion exchange due to similar atomic radii and charges as iron and has thus been hypothesized to be an effective tracer of hydrothermal or magmatic inputs. To evaluate the mobility of vanadium in a magnetite-hematite-fluid system, experiments on the partitioning of vanadium between magnetite, hematite and a …

Computational Studies Of The Effects Of Substitutions On Silatranes And Ring Strain Energies, As Well As Determination Of Aromaticity And Complexation In Polypnictogen Analogues Of The Cyclooctatetraenyl Dianion, Alexander Stuart Pixler

Graduate Research Theses & Dissertations

The work in this dissertation computationally examines four areas involving variations on archetype molecules and how they affect reactivity and physical properties. Studies in Chapters 2 and 3 assess substituent effects on cyclic systems, while those in Chapters 4 and 5 explore both partial and complete substitution of ring component atoms as well as the chemical implications of the substitution.The effect of substituents on molecular reactivity is a critical concept that affects every branch of chemistry. Previous work within our group showed that 1-hydridosilatrane was an effective and selective reducing agent for a variety of compounds. Fully 3,3,7,7,10,10-substituted silatranes have …

Well-Being In Graduate Health Professions Education: Exploration Of Programmatic Interventions, The Student Experience, And Students’ Support Preferences, Katherine Schultz

Graduate Research Theses & Dissertations

Healthcare provider well-being is a growing area of professional concern. Beyond the negative impacts on the clinicians’ health, stress, burnout, and other manifestations of decreased clinician well-being can directly affect the quality of patient care. Research suggests that well-being concerns begin in graduate health professions education programs, during which students undergo rigorous academic and clinical training for future careers as clinicians. The aim of this study was to explore programmatic interventions to promote well-being in graduate health professions education and the students’ experiences of well-being while enrolled in graduate health professions programs.

This study was conducted across three phases. Phase …

Investigating Changes In Permeability Caused By The Transport And Retention Of Microplastics In Saturated Sand Columns, Iliansherry Santiago

Graduate Research Theses & Dissertations

Microplastics (MPs), plastic particles present and continuously moving in our environment, represent a contaminant of global concern to the scientific community and society. MPs are particles less than 5 mm and are ubiquitous in our surroundings and the environment. MPs have been detected in oceans, soils, freshwater, drinking water and groundwater. MPs are considered contaminants of emerging concern (CEC), as they contain toxic components and serve as carriers for other contaminants that may affect the ecology and human health. Limited laboratory and field experiments demonstrate that MPs are transported and retained in porous media of a groundwater aquifer. A research …

Self-Reported Tea Consumption And Age-Related Macular Degeneration In U.S. Adults, Lindsey Halasz Shaffer

Graduate Research Theses & Dissertations

Background: Age-related Macular degeneration (AMD) is a multifaceted disease of aging that is currently one of the leading causes of blindness in the US. As aging populations continue to turn to alternatives to prevent age-related diseases, the use of tea antioxidants has been suggested as potential protectors against cellular degradation and oxidation within the retina. To date, no epidemiologic or cross-sectional studies have been conducted regarding the correlation between tea intake and AMD, as it has for other diseases of with antioxidant mitigation potential, such as cancer. Objective: The purpose of this cross-sectional study was to examine the correlation between …

Physical Therapy And Caregiver Burden: A Mixed Methods Design, Jamie S. Way

Graduate Research Theses & Dissertations

This dissertation explores the value and impact of physical therapists working with caregiver-care recipient dyads. A convergent mixed methods design was used to assess the impact physical therapy can have on burden experienced by the primary caregiver, caring for a loved one with a chronic neurological condition. The purpose of this study was to examine the role of physical therapy on caregiver burden by answering the following research questions: 1) Does caregiver burden as measured by the Zarit Burden Interview change over time when the care recipient receives physical therapy services? 2) Does patient function improve over time in individuals …

Covid-19 Online Learning: Characteristics And Perceptions Of Newly Struggling High School Students, Kristine Webster

Graduate Research Theses & Dissertations

The COVID-19 pandemic caused worldwide closures of schools resulting in a sudden shift to online instruction for a large population of students. For many students, this shift caused a decrease in academic performance. This four-paper dissertation explores the impact of this shift on newly struggling high school students. These students earned a D or F as their final course grade in two or more classes during the first semester of 2020 online learning but earned zero or one D or F final course grade during the first semester of 2019 with in person instruction.Using a correlational research design, the first …

An Experimental Investigation Of Gold Incorporated Into Bornite, Intermediate Solid Solution (Iss), And Pyrrhotite: Implications For Porphyry Ore Deposits, Carli Lynn Schmidt

Graduate Research Theses & Dissertations

Magmatic-hydrothermal ore deposits contain metals sourced from a melt and transported to shallower levels by a magmatic volatile phase (MVP) where they can be deposited as native elements or structurally bound in sulfide or oxide minerals. Porphyry ore deposits are a major subclass of such and contain plentiful concentrations of societally significant metals including copper and gold. These deposits include the Grasberg porphyry Cu-Au-(Mo) deposit in Indonesia, the Bingham Canyon porphyry Cu-Mo-Au deposit in Utah, USA, and the Far Southeast porphyry Cu-Au deposit in the Philippines. In these systems gold is often found associated with bornite, intermediate solid solution (ISS, …

Does The Degree Matter? Understanding Employer Hiring Perspectives On Community College Health Information Technology Program Graduates, Tricia L. Broughton

Graduate Research Theses & Dissertations

Health Information Technology (HIT) is an in-demand occupation across Illinois and as such community colleges offer related preparation programs in the form of one-two semester Career and Technical Education (CTE) Certificates and Associate of Applied Science (A.A.S.) degrees. Community college applied programs aim to meet the needs of local employers and the interest of students to obtain employment within their communities. Research suggests that employability as perceived by employers goes beyond the technical skill requirements of the job. This dissertation project aimed to better understand employer’s hiring perspectives on community college health information technology (HIT) program graduates and ultimately whether …

Efficacy Of A Brief Mindfulness Intervention For Not-Just-Right Experiences, Samuel Richard Cares

Graduate Research Theses & Dissertations

The obsessions and compulsions that define the diagnosis of Obsessive-Compulsive Disorder (OCD) traditionally have been characterized by harm avoidance. However, harm avoidance is neither specific to OCD nor does it comprehensively explain all symptoms with which individuals with OCD present. Emerging research has focused on incompleteness—and its manifestation through the phenomenon of not just right experiences (NJREs)—as a potential motivating factor for OCD symptoms. Whereas Exposure and Response Prevention (ERP) is conceptually relevant to—and empirically supported for treating—symptoms characterized by harm avoidance, there is an unclear connection between ERP and symptoms characterized by incompleteness. Research has begun to explore ways …

Artificial Intelligence And Multi-Physics Approach For Electrocoagulation Parameter Selection, Adam Cotton

Graduate Research Theses & Dissertations

Proper treatment of wastewater is crucial to maintain the health of the public and avoid pollution of the environment. Methods like filtering and chemical coagulation have been utilized to treat wastewater, but they have significant limitations such as inefficient treatment of micro-size pollutants, generation of secondary contaminants, and high operation and maintenance costs. The electro-coagulation system which generates coagulants from low-cost aluminum electrodes under the application of a current has received strong attention as a promising water treatment system. However, the EC system has not been fully utilized yet due to lack of understanding and operation guidelines.

In this study, …

Fourth And Fifth Grade Reading Teachers' Perceptions Of Differentiated Reading Instruction, Amanda Lee Clark

Graduate Research Theses & Dissertations

Teacher accountability and test scores currently drive many practices within the field of education. At the same time, student populations have become increasingly diverse, causing classroom teachers to feel pressured to teach to the test. Differentiated instruction has emerged as a best practice to help maximize learning for all students. However, the definition and implementation of the instructional approach remains inconsistent. Guided by the concepts of Vygotsky’s zone of proximal development and Tomlinson’s differentiated instruction, this study examined the connection between these two concepts as they relate to teachers’ perceptions of differentiated instruction in the content area of reading. This …

Diagram Affordances And Their Impact On Students’ Answers About Rivers And Groundwater, Daniel R. Curtis

Graduate Research Theses & Dissertations

Diagrams are important tools for conveying information in geoscience education. Choosing what imagery to use and assessing its effectiveness is not straightforward. A diagram needs sufficient affordances (i.e., details, dimension) for the viewers to comprehend the intended message without adding too many details that will confuse and distract the viewer. Prior research suggests that the viewer’s knowledge and experience impact how diagram affordances are interpreted. Understanding this interaction between knowledge, context, and diagram affordance is critical for education and assessment.To investigate how changes in affordances affect student interpretation of images, we surveyed undergraduate students (N = 201) in introductory Earth …

Structural Analysis Of Polar Aggregates And Inter-Ionic Distances In Room Temperature Ionic Liquids, Emily Elizabeth Dalbey

Graduate Research Theses & Dissertations

Ionic liquids have a wide variety of applications in chemistry due to their unique properties such as low flammability, low volatility, and high thermal and chemical stability. These properties make them great solvents, electrolytes for lithium-ion batteries, and more. Ionic liquids are salts whose components are mis-matched in size and shape leading to low melting points. To design an ionic liquid with a desired property it is key to first understand their structure. Lineshape analysis of the charge alternation peak from the experimentally measured or computationally calculated X-ray scattering data can give information about the size of the polar aggregates …