Digital Commons Network^™

Neural Network Supervised And Reinforcement Learning For Neurological, Diagnostic, And Modeling Problems, Donald Wunsch Iii

Masters Theses

“As the medical world becomes increasingly intertwined with the tech sphere, machine learning on medical datasets and mathematical models becomes an attractive application. This research looks at the predictive capabilities of neural networks and other machine learning algorithms, and assesses the validity of several feature selection strategies to reduce the negative effects of high dataset dimensionality. Our results indicate that several feature selection methods can maintain high validation and test accuracy on classification tasks, with neural networks performing best, for both single class and multi-class classification applications. This research also evaluates a proof-of-concept application of a deep-Q-learning network (DQN) to …

A Systematic Analysis Of Eye-Tracking Metrics For Sleepiness, Debasis Roy

Masters Theses

”Sleepiness or sleep deprivation is a serious hazard that can be life-threatening in carrying out certain tasks (e.g., when driving or executing attention-critical tasks). Eye movement can provide cues on sleepiness. Hence, eye-tracking metrics have the potential to detect sleepiness.

In this research, we used a systematic analysis approach to identify eye-tracking metrics for sleepiness. We used several databases to identify independent experimental studies that have used eye-tracking metrics to assess sleepiness. We identified 25 studies that included 674 participants where the participants’ data were captured both in an alert state and in a sleep-deprived state. In the analysis, we …

A Meta-Analysis: Gamification In Education, Yalin Wang

Masters Theses

“Gamification has been used in a variety of contexts including education. In order to understand the effects of gamification in education, a meta-analysis was conducted. A bottom-up approach was used to analyze the effects of game design elements on learning outcomes found in the literature search. The result suggests that gamification can enhance student learning outcomes. Elements such as points, leaderboards, competitions, progress bars, feedback, and collaboration have medium to large effect sizes. Gamification also has larger effects on young children in elementary education than learners at other education levels. The study offers suggestions and guidelines for educators on the …

A Comparative Visual Content Analysis Of The Cdc And Who Covid-19 Infographics, Manushri Pandya

Masters Theses

"In this study, I conducted a comparative visual content analysis of the CDC and WHO COVID-19 infographics. I considered infographics as an important genre of communication during such times because they not only provided sufficient information to the audience but did so in an engaging manner. The goal of my study was to think about the role of infographics in the context of health and risk communication during a pandemic, and to emphasize on the rhetorical elements that constitute the creation of infographics by major health organizations. I specifically focused on three elements: the kinds of information communicated through infographics, …

Projectile Generator Design For Underground Coal Mine Seal Testing, Ethan Allan Steward

Masters Theses

"Underground coal mines have several dangers, one of the most hazardous of which is the possibility of an explosion caused by the ignition of methane gas. To reduce ventilation costs, coal mines have the option to close off abandoned areas that are no longer active with structural seals to keep an explosion from propagating into working areas of the mine. Though seals have been designed to resist the overpressure, none have been evaluated for their resistance to the impact of heavy objects. Underground explosions produce high velocity gasses that, traveling through mine openings, may propel objects in the mine at …

Predator Scent And Presence Alter Mammal Assemblages In The Missouri Ozarks, Usa, Cara Jean Yocom-Russell

Masters Theses

"Species that are vulnerable to predation exhibit a host of behavioral and physiological adaptations toward the avoidance of this outcome: Heightened awareness of surroundings through visual, olfactory, and auditory senses are common ways in which these species avoid detection by predators. While links between direct predator-prey relationships are well established, less is known about how predators can shape overall community structure or the populations of secondary or less frequently consumed prey items. As humans expand into rural areas, the frequency of wildlife conflicts rises. In response, humans look to prevent these events with a variety of methods. One such method …

A Simple Background Elimination Method For Miniaturized Fiber-Optic Raman Probe, Bohong Zhang

Masters Theses

"Raman scattering is called a photonic - molecular interaction based on the kinetic model of the analytic. Due to the uniqueness of the Raman scattering technique, it can provide a unique fingerprint signal for molecular recognition. However, a serious challenge often encountered in Raman measurement comes from the requirements of fast, real-time remote sensing, background fluorescence suppression, and micro-environmental detection.

A new Miniaturized Fiber-Optic Raman Probe (MFORP) for Raman spectroscopy, used especially for eliminating background fluorescence and enhancing sampling, is presented. Its main purpose is to provide an overview of excellent research on the detection of very small substances and …

Method Of Optimal Battery Scheduling With Optimal Battery And Photovoltaic Sizing, Gideon Hallman

Masters Theses

“Renewable energy generation is on the rise. One of the best ways to capitalize on this intermittent power supply is by using the renewable energy source in tandem with batteries. A joint photovoltaic (PV) and battery system model was created that implemented battery degradation and optimized battery usage using a Markov Decision Process (MDP). This system was then subjected to a series of tests to do a sensitivity analysis while optimizing the battery and PV sizing for the system at hand. Parametric sweeps of solar power and battery capital costs, the cost of energy taken from the grid, the cost …

The Effects Of Rigid Polyurethane Foam As A Confinement Material On Breaching Charge Detonations, Nathan Franz Paerschke-O'Brien

Masters Theses

"The effects of a rigid polyurethane foam used as a confinement material on four types of breaching explosives were tested, focusing on the changes in shockwave peak pressures, detonation load compression forces, and brisance cratering abilities. The Plate Dent testing procedure was modified to incorporate a load cell force sensor, and two air overpressure sensors were included adjacent to the blast to quantify each test result. The testing variables focused on the polyurethane foam cure times and thickness volumes around the breaching explosives to determine the breaching charges' optimal energy output capabilities when confined by the foam material. The rigid …

Fabrication Of Silicon Nitride Parts By Ceramic On-Demand Extrusion Process, Sachin Choudhary

Masters Theses

“Ceramic On-Demand Extrusion (CODE) is a patented solid freeform fabrication method for manufacturing high-density monolithic ceramic parts. In the past 5-6 years, the technology has been successfully implemented to fabricate alumina and zirconia parts. The mechanical characterizations also show CODE’s high potential in achieving desired structural properties. The present study covers the fabrication of silicon nitride parts by CODE process, which entailed the design of paste formulation for achieving rheology suitable for dimensional control in fabricated parts and determining firing temperature and the content of sintering additives for silicon nitride green bodies fabricated by CODE. The density, hardness, and fracture …

Biochemical Assay Invariant Attestation For The Security Of Cyber-Physical Digital Microfluidic Biochips, Fredrick Eugene Love Ii

Masters Theses

“Due to the devastating global impact that infectious diseases have had, especially in developing countries, the demand for access to adequate resources to combat sickness continues to be a heavy burden. Reliable and affordable diagnostics is a vital first line of defense in fighting outbreaks and providing accurate treatment. Digital microfluidics biochips capable of running multiple diagnostic tests on a single platform are an emerging technology that are increasingly being evaluated as a viable platform for rapid diagnosis and point-of-care field deployment. Although these systems offer many benefits, processing errors are inherent. Therefore, cyber-physical digital biochips are being investigated that …

Physics-Based Modeling Of Lithium-Ion Batteries For Control And Estimation Applications, Brody J. C. Riemann

Masters Theses

“Lithium-ion batteries are extensively used in many application areas like consumer electronics, electric vehicles, and microgrids. As the world moves towards further electrification of vehicles and more widespread use of renewable energy sources, the need for large-scale battery storage systems will grow. To effectively replace conventional methods, batteries will need to be charged quickly while accounting for degradation to maximize lifetime. Further, larger batteries require more detailed safety monitoring, which is implemented using a battery management system (BMS). A BMS is responsible for state of charge (SOC) estimation, state of health (SOH) estimation, cell balancing, regulating voltage and current according …

Factors Affecting Covid-19 Pandemic, Linrui Han

Masters Theses

“COVID-19 has affected our daily lives in many aspects, such as work, healthcare, education, business, and social. With the quick spread of this new coronavirus, many countries quickly fell into a pandemic control and management mode. It has been more than one year since the discovery of COVID-19, but until now, COVID-19 is still affecting our lives and our daily operations. The research consists of two papers focusing on different factors affecting the COVID-19 pandemic. The first paper studies the effect of ICT and healthcare expenditures on the COVID-19 management and control. The second paper focuses on the impact of …

An Examination Of The Integration Of Augmented Reality In Science Curriculum, Cathleen A. Bierman

Masters Theses

This study examines students’ success rate and level of engagement in a science classroom by using augmented reality (AR) specifically merge cube. Students’ success rate is measured by their grades, which can determine if the student understands the material. Engagement is measured by observing whether or not the students are asking questions, volunteering information, working well with others, paying attention in class, and participates actively in discussions. The two research questions guided the study:1. Does the use of a merge cube in the science classroom improve participants’ success rate in learning science? and 2. Does using a merge cube increase …

Listening To Their Voices: A Narrative On Campus Climate For Trans* Students, Cloe Bourdages

Masters Theses

The purpose of this study was to examine the impact that campus climate has on trans* student academic and personal success. This qualitative study was explored through individual interviews by four participants. Participants discussed practices which enabled and inhibited their success; which lead to the finding of four themes: identity and validation, academic climate, climate outside of the classroom, and resources and services. Overall, a positive correlation in trans* student success was found when institutions use inclusive practices within their work. Lastly, the study provided implications for higher education recommended by both the participants and the researcher.

Preparing For Life After College: The Career Skills Learned By Resident Assistant Alumni, Kala Cousineau

Masters Theses

According to the National Association of Colleges and Employers (NACE), there is a high value placed on college graduates who acquire skills that can be utilized to attain their professional goals (2015). On college campuses, the resident assistant (RA) role is one of the many opportunities the residence life department has that can help develop students and their career readiness (Peck, 2017). There is a lack of research looking at what transferable skills students in the resident assistant position acquire and then use in their careers post-graduation. This qualitative study utilized semi-structured interviews to explore what skills former RAs learned …

Five In 20: An Exploratory Study To Develop And Pilot An Observation Tool Used To Assess The Five Features Critical To Effective Classroom Management, Alexandria Cardot

Masters Theses

The present study aimed to develop and pilot a standardized classroom observation tool intended to assess teachers’ current use of the five features critical to effective classroom management. Thirty-nine observers who regularly conducted classroom observations (e.g., school psychologists) were recruited to complete 39, 20-min observations in kindergarten through twelfth grade classrooms. Due to COVID-19, observers could either complete a live observation or think of a previously completed observation. Of the 39 observations, 13 were live and 26 were recalled. To complete the observation, observers indicated whether the teacher was observed to use each of the 21 evidence-based strategies and if …

Teacher Perceptions And Use Of Evidence-Based Discipline Practices, Taylor Robinson

Masters Theses

School discipline has been linked to significant positive and negative outcomes for both students and teachers. The current study examined the predictive power of Illinois, public school teacher variables on the use of specific discipline strategies in the classroom. One hundred eleven teachers completed a survey with vignette developed by the primary researcher which was used to assess teachers’ confidence in implementing discipline strategies, perceived effectiveness of discipline strategies, and perceptions of peer use and peer beliefs about discipline strategies. The study used descriptive statistics to identify patterns of reporting and multiple linear regressions to determine the predictive power of …

Speaking To Power: An Exploration Of College Students’ Experiences With Student Lobbying, Catie Witt

Masters Theses

The United States is currently experiencing an increase in student activism compared to recent years (Jason, 2018). While research on student activism is vast, there is little research that has examined student activism through student-run lobby groups. Research seems to be non-existent when it comes to exploring the experiences of students involved in student lobbying as a form of activism. Studies also often focus on the outcomes of student activism, rather than the student activists themselves. This qualitative study utilized semi-structured interviews to explore the experiences of students who had been involved in a student-run lobby group at a rural …

Female Student Service Member’S Experiences With Higher Education And Military Transitions, Sophie Cieslicki

Masters Theses

This study explored the experiences of female student service members when transitioning between military-related and higher education responsibilities as well as their motivations for degree completion and campus resources they utilized. While the number of studies on female student service members is growing, research on this population is scarce. This study utilized a narrative qualitative approach to give female student service members a voice and platform to share their experiences and truths. Participants in this study have served at least one year in the United States Armed Forces and have completed at least one semester of college coursework. Participants were …

Examining The Relationship Between Acculturative Stress And Religion/Spirituality Among International Students, Ly'jerrick Ward

Masters Theses

The purpose of this study was to explore the relationship between acculturative stress and religion/spirituality of international students. This study utilized Sandhu and Asrabadi’s (1994) Acculturative Stress Scale for International Students (ASSIS) as well as the Santa Clara Strength of Religious Faith Questionnaire (SCSORF) created by Plante and Boccaccini (1997). Much research exists on how international students adapt and acculturate to a host country. This research will add to the body of literature that exists regarding how international students use their religion/spirituality to deal with acculturative stress. Students in this study were asked a number of questions from the ASSIS …

The Impact Of Mentoring African Americans Males During Their Undergraduate Experience At Predominantly White Institutions, Michael D. Miller

Masters Theses

Mentoring is often described as a positively effective relationship socialized by a professor or faculty member that assists the student with academic and interpersonal endeavors (Lavant, Anderson, & Tiggs, 1997). Black males face many obstacles in higher education that limit their abilities to obtain resources such as mentorship. The purpose of the present qualitative study was to examine the impact of mentoring relationships for African American males enrolled at a predominately White university. This study sought to explore if mentoring had an impact on Black males, what effects does mentorship have, how they describe their mentoring relationships, and how satisfied …

The Effect Of Mortality Salience On Compromising Mate Selection Standards In Homosexual And Heterosexual Individuals, Sydney Rohmann

Masters Theses

Terror management theory (TMT), proposed by Greenberg, Pyszcynski, and Solomon (1986), suggests that humans cope with terror resulting from the knowledge of their own mortality. The need for coping mechanisms arises when individuals are reminded of their own inevitable death; that is, when they experience mortality salience (MS). Hirschberger, Florian, and Mikulincer (2002) found that when primed with death reminders, heterosexual individuals tend to compromise their ideal mate selection to form close relationships. There has also been extensive research on the differences between homosexual and heterosexual mating preferences. This study examined the effect mortality salience has on an individuals’ mate …

An Exploration Of The Perception Of Faith Development At A Midwestern Public Institution, Zachary Sandoval

Masters Theses

Despite research indicating benefits to religious or faith involvement, there is an increase in individuals that claim to have no religious affiliation. Additionally, most research that has investigated faith development of college students has been conducted at private religious institutions. This qualitative study utilized semi-structured interviews to examine students’ perceptions of various interactions on their faith development at a public, rural Midwestern institution. Moreover, this study investigated how the institution of interest can better support spirituality on campus and the role student affairs can have on spiritual development. Thematic material was developed through Parks’s (2000) theory of faith development. Results …

Development Of Fluorescence Microscopy Approaches To Study Subcellular Protein Transport And Enzymatic Activity, Anchal Singh

Masters Theses

Understanding the subcellular localization of proteins and their activity is important in understanding their normal function in eukaryotic cells. Fluorescence cellular imaging techniques can selectively and sensitively visualize subcellular biochemistry. Using this approach, two different methods were employed in this thesis. The first focused on studying protein import into peroxisome and the other on monitoring the activity of an endoplasmic reticulum (ER)-localized enzyme, human carboxylesterase 1 (CES1).

Peroxisomes are mainly known as the center for long chain fatty acid b-oxidation as well as the production and detoxification of hydrogen peroxide. Proteins which are needed in the peroxisomes are encoded in …

Self-Reported Multicultural Teaching Knowledge And Skills Of School Professionals, Julia Kedzior

Masters Theses

Diverse learners face a variety of challenges, such as achievement gaps, behavior problems, and absenteeism. Therefore, it is important for their educators to have both multicultural teaching knowledge and skills to address these challenges and work towards a successful school experience for all students. Although research has sought to measure the cultural competence of teachers, not many studies have examined cultural competence in other school professionals (administrators, school psychologists, social workers, interventionists, instructional assistants, and other individuals who directly work with students in the school environment). In the current study, 185 teachers and other school professionals completed an adapted version …

Convergent And Discriminant Validity Of The Conners 3 Teacher Rating Scale: Comparisons With The Adjustment Scales For Children And Adolescents, Stephanie G. Buhrow

Masters Theses

The Conners 3-Teacher Rating Scale (Conners 3-T) and the Adjustment Scales for Children and Adolescents (ASCA) are both teacher report rating scales used for school system evaluations to assess youth and adolescent psychopathology. The Conners 3-T has limited research available independent from the Conners 3 Manual assessing its validity and diagnostic utility. The purpose of the present study was to compare correlations between the Conners 3-T and the ASCA to determine convergent and discriminant validity in support of the Conners 3-T. The present study included 118 students either randomly selected by teachers (n = 111) or referred for a special …

Relationships Between Parent-Child Interactions And Sexual Attitudes, Behaviors And Online Activity In Young Adulthood, Emily Donar

Masters Theses

The current study examined correlations between parent-child relationships and its relationship with the sexual attitudes and behaviors of young adults. Participants were asked to report on their perception of communication and quality relations with their parents. The findings indicate there was a relationship between the perception of high-quality parent-child relationships, likelihood of having extensive sexual experience, tendency to hold specific sexual attitudes and the frequency of online sexual behaviors. Explanations regarding the discrepancy between previous findings and the current study were discussed, including the sexual fluency of those with conservative attitudes. The consideration of gaps in literature incorporating online sexual …

The Efficacy Of Peer-Assisted Learning Strategies (Pals) With Hispanic English Language Learners In The 2nd Grade, Sonia Duran

Masters Theses

The present study examined the efficacy of a reading instruction, Peer Assisted Learning Strategies (PALS), for Hispanic English Language Learners (ELL). Currently, the literature indicates that there is a surge in ELL students, most commonly Spanish-speaking ELL students, in the United States. This increase in ELL population created a need for academic support as many of these students are historically academically behind their non-ELL peers due to the negative impact of lack of exposure to the English language and cultural differences. The PALS program is a class-wide reading intervention where students engage in reading activities to promote reading skills; and …

Flexibility: The Forgotten Component Of Fitness: Eccentric Exercise Vs. Static Stretching To Improve Flexibility, Zach Cox

Masters Theses

The purpose of this research is to assess the effects of eccentric exercise as well as static stretching on flexibility following a six-week training intervention. It also compared the effects to those of a static stretching program. The hypothesis is that eccentric training will show larger enhancements in flexibility in sagittal plane movements of the hips and knees in comparison to a static stretching program. Training sessions were done three days per week and had a 24-hour rest period minimum between them. The exercises for the eccentric group were as follows: standing hip extension, standing split, straight leg lowering, and …