Digital Commons Network^™

Modeling Of Sub-Terahertz Wakefield Structures For Electron-Bunch Acceleration, Cassandra Phillips

Graduate Research Theses & Dissertations

Dielectric-lined waveguides have been extensively studied to potentially support high-gradient acceleration in beam-driven dielectric wakefield acceleration (DWFA) and for beam manipulations. In this thesis, we investigate the wakefield generated by a relativistic bunch passing through a dielectric waveguide with different transverse sections. I specifically consider the case of a structure consisting of two dielectric slabs, along with rectangular and square structures. Numerical simulations performed with the fine-difference time-domain WarpX program reveal interesting features of the transverse wake and possible experiments at the Argonne Wakefield Accelerator (AWA) are proposed.

The Effects Of Rater Training On Rater Effects And Validity Of Direct Behavior Ratings, Abigail E. Pruitt

Graduate Research Theses & Dissertations

Educators have a responsibility to accurately measure student behavior in order to identify students in need of additional behavioral support. Current behavior screening tools can be lengthy or difficult to complete, and Direct Behavior Ratings (DBRs) offer a solution. However, DBRs are rater-mediated assessments, prone to rater effects. Rater training methods can be used to mitigate these rater effects, but previous research has not investigated the best training method for reduction of rater effects. Additionally, Many Facet Rasch Measurement (MFRM) provides an opportunity to adjust student ratings in response to individual rater tendencies of severity and leniency. Therefore, the primary …

The Role Of Social Support In The Association Between Socioeconomic Status And Academic Outcomes For Early Adolescents, Yoonsun Pyun

Graduate Research Theses & Dissertations

Students’ experiences in school, specifically experiences of academic success, have a lasting impact on their future outcomes, such as future academic achievement, employment and financial stability, and reduced risk of substance use in adolescence and psychopathology in adulthood. However, there are a number of risk factors that affect students’ academic outcomes, such as low socioeconomic status (SES). The literature consistently demonstrates discrepancy in academic outcomes for students from different SES backgrounds, such as students from lower SES background entering high school with lower reading skills and having higher high school dropout rates in comparison to students from higher SES background. …

Climate Change Impacts On Baseflow Contributions In A Semi-Arid, Snowmelt-Dominated Basin Within The Upper Colorado River Basin, Kaelyn Quinlan

Graduate Research Theses & Dissertations

The Upper Colorado River Basin (UCRB) is a significant water resource in the southwestern United States, providing water to Colorado, New Mexico, Utah, and Wyoming. (Reclamation, 2012). Communities and industries within these states are dependent on the Colorado River’s water availability and accessibility. Growing population and development demands, in conjunction with climate change, can have drastic consequences for the ecosystems and municipalities dependent on these reservoirs. It is critical that as watersheds within this region are strained under increased demands and decreased inputs, water use practices use informed decision-making to manage the budget and quality of its water resources.

I …

Modeling And Visualization Of Long-Term Public Opinion On Covid-19 Vaccine, Ashiqur Rahman

Graduate Research Theses & Dissertations

The coronavirus pandemic created significant dependence on social media. While the social web was crucial in spreading timely information and informing the public, misinformation has also spread with little to no oversight. Several works have focused on identifying misinformation and topic analysis in COVID-19 (SARS-COV-2) tweets. While most of the previous studies focus on a shorter time frame, we analyzed a larger dataset starting from the beginning of the pandemic until the end of December 2021. Our work focuses on a novel area that identifies the motivating and demotivating topics of COVID-19 vaccination and analyzes these topics based on time, …

Conductors For Maximal Orders Of Group Rings Over Local Fields, Brooke Randazzo

Graduate Research Theses & Dissertations

This dissertation examines conductors for maximal orders of group rings, $FD$, contained in integral group rings, $\mathcal{O}_F D$, where $D$ is a finite group, $F$ a local field, and $\mathcal{O}_F$ its discrete valuation ring. (Given two rings $R \subseteq S$, the conductor of $S$ in $R$, if it exists, is the largest ideal of $S$ contained in $R$.) First, we use a theorem of Jacobinski to make this conductor explicit where $F$ is a particular extension of $\mathbb{Q}_p$ of varying ramification index and $D$ is any elementary abelian $p$-group. Next, we examine this conductor problem for this same $F$ within …

Investigation Of A Piezoelectric Pressure Sensing To Drive An Igbt Circuit, Sonali Rawat

Graduate Research Theses & Dissertations

In this thesis, piezoelectric pressure sensing element circuit has been proposed and designed to drive the IGBT. The idea behind this work is to integrate and develop the IGBT as pressure sensor. By the application of pressure on the sensing element, the output voltage can turn on the IGBT. The relationship between the force applied and generated voltage of the electromechanical model has been analyzed theoretically.The piezo material used for this work is PZT due its best-known properties. The PZT is also modeled in COMSOL, and its output voltage results are compared with the LT SPICE and theoretical calculation for …

Exploratory Study Of Practicum Counselor Strategies Of Connection And Disconnection, Ashley S. Roberts

Graduate Research Theses & Dissertations

There is an urge within professional counseling to provide socially just and multiculturally competent care. Relational Culture Theory (RCT) aligns with these goal as included its core components is theory about how people develop in stratified cultural contexts. Although there is increasing empirical support for RCT, there is a gap in understanding of how professional counselors implement RCT strategies of connection and disconnection. Therefore, the researcher in this study implemented instrumental case study design and directed content analysis to understand practicum counselor responses to clients. Findings of this study are applied to clinical practice, counseling education, and supervision.

Case Study Of Elementary Teacher Perceptions Regarding Technology Integration In The Writing Curriculum, Dana Marie Robinson

Graduate Research Theses & Dissertations

This qualitative study focused on the perceptions three elementary school teachers had regarding their ability to integrate technology into the writing curriculum as well as their understanding of how technology and multimodalities can actually be integrated. The three teachers were asked to reflect on their technology use in teaching writing for a 12-week period. Each was selected based on their self-reported Technological Pedagogical and Content Knowledge (TPACK) as measured by a screening survey. In addition to these reflections, they were interviewed at the beginning, middle, and end of the study period. Data collection methods also included weekly lesson plan reflections …

Qommunities: A Characterization Of Qanon Support In The Us, Alexa Rogalla

Graduate Research Theses & Dissertations

The far-right, pro-Trump conspiracy movement QAnon has gained popularity in recent years for their outlandish conspiratorial claims and has even been implicated in motivating some participants in the January 6th insurrection at the US Capitol as well as violent extremist events. The current state of research into conspiracy theories is lacking, especially within the field of sociology, where the social dimensions of conspiracy theories are poorly understood. This research contributes to the literature on conspiracy theories by addressing gaps in the literature through an analysis of internet searches related to QAnon, using geo-coded Google searches for QAnon related terms as …

Cathode Electron Sources For Cold Field Emission: Fabrication Methodology For Discretely Patterned High Aspect Ratio Silicon Nanotips, Austin Luke Rose

Graduate Research Theses & Dissertations

The development of high aspect ratio electron sources for use in Cold Field Emission (CFE) is an area of research interest with a wide range of potential applications from electron microscopy to CFE X-ray sources for computed tomography in the medical field. The development of cathode electron sources that are capable of electron emission at room temperature is attractive because of their ability to produce bright high current electron beams with less energy spread than their Thermionic or Schottky equivalents. These parameters are impacted by the sharpness of the emitter’s apex, creating the desire for high aspect ratio emitters. Additionally, …

Covidalert - A Wristwatch-Based System To Alert Users From Face Touching, Mrinmoy Roy

Graduate Research Theses & Dissertations

Worldwide 219 million people have been infected and 4.5 million have lost their lives in ongoing Covid-19 pandemic. Until vaccines became widely available, precautions and safety measures like wearing masks, physical distancing, avoiding face touching were some of the primary means to curb the spread of virus. Face touching is a compulsive human behavior that can not be prevented without constantly making a conscious effort, even then it is inevitable. To address this problem, we have designed a smartwatch-based solution, CovidAlert, that leverages Random Forest algorithm trained on accelerometer and gyroscope data from the smartwatch to detect hand transition to …

Quarantine And Isolation Experiences Of College Students: A Narrative, Brooke Gibson

Masters Theses

The COVID-19 pandemic was an unanticipated phenomenon, with a lack of information surrounding quarantine and isolation experiences in college students and how this impacts their sense of belonging. This qualitative narrative study utilized semi-structured interviews to understand the participants’ experience of isolation at a rural mid-sized university in the Midwest. The research shared the students experiences and showed that participants lacked some sense of belonging whether it was with friends, family, or their institution.

Q/A: A Semiotic Deconstruction Of Narrative Transportation On Episodic Television, Josh Grube

Masters Theses

Narrative transportation is a captivating phenomenon in which an audience member psychologically departs from material reality and immerses into the narrative world (Gerrig, 1993). Existing literature on narrative transportation mostly consists of audience-level studies, primarily focused on the phenomenon’s persuasive effects and audience attributes that mediate their ability to be transported. From a theoretical media perspective, transportation is conceived as an aspect of the larger audience cultivation process (Gerbner, 1998) due to its persuasive influence, revealing the importance of viewing it from the textual level. This thesis fills a significant gap in narrative transportation theory by examining television narratives through …

Crime, Crisis And Economic Growth: An Investigation Of Socio-Economic Determinants Of Crimes In The Indian States, Ankita Thapa

Masters Theses

This paper investigates the impact of socio-economic conditions on five major crime heads from 2001-2019 using a panel data set for the Indian states. The paper focus on the great recession of 2008-09, economic growth of the states, and deterrence variables. The paper employed two estimation procedures: panel Fixed-Effect and two-stage least square-fixed effect (2SLS-FE). The 2SLS-FE is preferred over the fixed effect method, where poverty is treated as an endogenous variable with higher education and social sector expenditure as instrumental variables. A dummy variable is used for the period of the great recession. A square of state GDP per …

The Influence Of Institutional Social Media And College Students' Choice, Anna Fishbein

Masters Theses

Social media has become a way of personal communication as well as a way for brands and businesses to connect with consumers. In the past twenty years, the expansion of technology into everyday life has impacted the way we interact and communication. There is a lack of information surrounding how social media is influencing prospective students’ college choice. There are studies focused on student college choice, and studies focused on how social media impacts consumers, but there is limited research focused on bridging the two concepts. This quantitative study utilized a causal-comparative survey to explore the influence of institutional social …

Development Of Phase Change Thermal Storage Medium: Cooking With More Power And Versatility, Martin Osei

Masters Theses

With an Insulated Solar Electric Cooker (ISEC), a 100 W solar panel directly cooks food while providing 5W off-grid electricity access; but it cooks slowly. Storing the day’s energy with phase change thermal storage allows ISEC to cook more rapidly as well as cook after sunset. The ISEC is made by sticking a 3ohm resistive to an aluminum pot (inner phase change assembly PCA) where another cooking pot fits. The resistive heater is surrounded by a bigger pot (outer PCA) that contains the PCM and is tightly sealed. The solar panel is connected to the resistive heater with a thermal …

Low-Head Dam Removal Increases Functional Diversity Of Stream Fish Assemblages, Adam Christopher Jones

Masters Theses

Despite the growing number of dam removals to date, very few have been studied to understand their impacts on stream fish communities. Despite being the most common type of dam in the U.S., an even smaller proportion of studies focus on the impacts of low-head dam removals, instead, focusing on the impacts of removal of larger dams. In this study, two previously impounded Illinois rivers were monitored to assess the impacts of low-head dam removal on the functional assemblage of stream fishes. This was accomplished by aggregating fishes into habitat and reproductive guilds, relating community changes to habitat, environmental metrics, …

Faculty Perceptions On Working With Students With Learning Disabilities, Ashley Jezik

Masters Theses

Students with specific learning disabilities in higher education have been rapidly increasing. Legislation has been a large factor in the equality in education for individuals with disabilities making it easier to attend higher education. College students with disabilities have the hard and important choice of self-disclosing their disability, with many choosing not to. A main role for faculty is to support their students. This qualitative study aims to identify the knowledge faculty have about this student population and how they work with their disability services office. The research shows that faculty's knowledge on students with disabilities are solely based on …

David Lindsay's A Voyage To Arcturus: An Anti-Fantasy, Bryan Wysopal

Masters Theses

This is a study of David Lindsay’s A Voyage to Arcturus (1920) in which I argue that the novel is an anti-fantasy, that is, a fantasy that negates certain tropes common to the genre as part of the author’s wider intentions for writing. I contextualize Lindsay by comparing him to several authors of his time who also worked in the mode of fantasy, then explain how the generic traits of the novel are handled unconventionally to promote Lindsay’s personal philosophy. I explore Lindsay’s treatment of the basic generic traits of the hero and his quest, the imaginary world, and …

Conduct Professionals' Experiences With Student Misconduct And Mental Health, Robyn Bauer

Masters Theses

Over the years, mental health concerns have continued to rise in college students and is compounded by the natural stressors associated with navigating unfamiliar territory, increased social and academic pressures, as well as added responsibilities and obligations (Pedrelli et al., 2015). Mental illnesses have been linked to misconduct, disruptive behavior, or violent behavior among students (Center for Parent Information and Resources, 2017; Johnson et al., 2018; Semenza & Grosholz, 2019; Taylor & Smith, 2019). There is limited research focused on the intersection of mental health and misconduct. This qualitative study utilized semi-structured questions to explore how conduct professionals manage mental …

Social Validity And Feasibility Of The Five In 20 Classroom Management Observation Tool, Kaylee Hampton

Masters Theses

The present study aimed to assess the social validity and feasibility of a standardized classroom observation tool intended to assess teachers’ current use of the five features critical to effective classroom management. Forty-three observers who regularly conducted classroom observations (e.g., school psychologists) were recruited to complete 20-min observations in kindergarten through twelfth grade classrooms, and then complete an adapted behavior intervention rating scale to assess their social validity ratings of the tool. Due to COVID-19, observers could either complete a live observation or recall a previously completed observation. Of the 43 observations, 15 were live and 28 were recalled. To …

Investigating The Impacts Of Monetary Policy On Income Inequality In Developed Nations: Case Study Of The Euro Area, Japan And The United States, Hector Martinez Garcia

Masters Theses

This paper tries to evaluate the effect that unconventional monetary policy has had on income inequality for the set of Eurozone countries, the United States and Japan using an unbalanced panel data model over the period from 1980 to 2021, first jointly and then individually, using different regressions for each case. Based on the regression model analyzed, the study attempts to analyze the relationship between money supply and income inequality as measured by the Gini index using fixed effects and random effects for our panel data model. The study reveals the importance of the money supply variable in reducing inequality …

Staff Perception Of Pbis Implementation In Illinois School Districts, Dominique Starling

Masters Theses

Behavioral management is a top priority in the educational setting. Historically, schools have implemented a variety of different methods to manage behaviors in schools. One of these methods is punitive punishment, which has led to the school-to-prison pipeline phenomena. The school-to-prison pipeline is a practice in the U.S. public schools that removes students with behavioral issues from educational institutions often resulting in placement in juvenile and criminal justice systems. Through zero tolerance and other punitive disciplinary policies, many youths find themselves dropping out or being expelled from school and eventually in juvenile detention centers and prisons. Research evidence shows that …

Interfacial Electrochemistry In Metallic Film Fabrication, Eric S. Tuala

Masters Theses

An experimental determination of RC constant at the edge and the center of a disk electrode was done using in situ reflectance spectroscopy on a Au electrode immersed in HClO₄ as electrolyte. The RC constant at the edge of the disk electrode was found much smaller than that at the center. Such differences contribute to the selective removal of the deposited Cu on an Au disk electrode.

Furthermore, the electrochemical corrosion of Cu²⁺ towards Co electrode (called cementation reaction) was investigated using a Co/Pt rotating disk electrode. The Open Circuit Potential of Co electrode in CuSO₄ electrolyte …

Cloning Of Root-Specific Promoters In Helianthus Annuus And Populus Trichocarpa, Jacob Murphy

Masters Theses

Tissue-specific promoters are a valuable tool in plant biotechnology because they allow for precise spatial control of transgene expression. To identify root-specific promoters in sunflower (Helianthus annuus), sunflower RNA sequence (RNA-seq) data were screened in silico by Pavlidis Template Matching (PTM) with a root-specific template. Eight root-specific genes were identified in sunflower. The 2.5kbp promoter regions of six of these root-specific sunflower genes (HaTOR1L3, HaGOXL3A, HaGOXL3B, HaAPA1, HaPOE1, and HaMOP10) were successfully cloned as well as the 3kbp promoter regions of four root-specific genes previously identified in poplar (Populus trichocarpa …

School-Based Mental Health Professionals’ Perceptions Of And Role In Disciplinary Practices Related To The School-To-Prison Pipeline, Ashlyn Wingate

Masters Theses

The school-to-prison pipeline is a process in which school children are funneled out of the school system and into the criminal justice system through suspension and expulsion, both forms of exclusionary discipline. Suspension and expulsion are ineffective disciplinary policies that have harmful effects on school children, contributing to grade retention, drop-out, involvement in the juvenile justice system, and higher unemployment and incarceration rates as adults. These damaging practices occur in the presence of school-based mental health professionals (school psychologists, school social workers, and school counselors) who are trained to promote the overall wellbeing and success of school children. In the …

Self-Compassion And Emotion Regulation As Predictors Of Disordered Eating, Mandira Srivastava

Masters Theses

Disordered eating attitudes and behaviors are becoming widespread, with individuals employing maladaptive compensatory strategies to cope with the distress and dissatisfaction with themselves that they face. Emotion regulation and self-compassion, both are well-researched areas, with their relationships with disordered eating also being an emerging area of interest. However, there is limited literature that has examined the relationships among the three constructs, wherein it has been reported that self-compassion and emotion regulation serve as predictors of disordered eating in individuals. The goal of this study was to look at the connections between emotion regulation and disordered eating, self-compassion and disordered eating, …

Beetle Diversity In Temperate Deciduous Forests With Different Management History In Central Illinois, Syue Ru Chien

Masters Theses

No abstract provided.

Problematic Social Media Use And Depression In College Students: A Mediation Study, Morgan Hummel

Masters Theses

Recent research has shown a relationship between problematic social media use and depression symptoms in adults in the United States. Social comparison has been identified as a mediator in this relationship in previous studies. Little research has explored the underlying mechanisms in social media use and the onset of depression symptoms in college aged students. The present study examines whether social comparison mediates the relationship between problematic social media use and depression symptoms in 102 college students in the US. The participants completed measures of problematic social media use, social comparison, and depression symptoms. The results indicated a positive relationship …