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Einstein Field Equations And The Solutions For Uncharged Black Holes, Yogesh Mahat

Masters Theses

The General Theory of Relativity, formulated by the brilliant mind of Albert Einstein, stands as one of the most fundamental and revolutionary pillars of modern physics. This elegant theory of gravity not only offers a comprehensive explanation of the workings of the universe on a large scale, but it has also paved the way for groundbreaking advancements in the field of mathematics. This thesis begins by providing a concise overview of the key mathematical principles that are crucial to understanding Einstein’s theory. These principles form the basis for deriving the field equations that Einstein introduced. From there, these equations are …

Environmental Fate And Transport Of Pfas In Wastewater Treatment Plant Effluent Discharged To Rapid Infiltration Basins, Kai M. Trobisch

Masters Theses

Fate and transport of per- and polyfluoroalkyl substances (PFAS) in wastewater treatment plant (WWTP) effluent discharged to rapid infiltration basins (RIBs) is investigated using data from 26 WWTPs in Michigan and numerical modeling to assess the role of air-water interface (AWI) sorption in modulating mass fluxes to the saturated zone. Analysis of RIB physical properties yields a median separation distance of 6.5 meters between land surface and the water table, and a continuum of area-normalized effluent fluxes ranging from 0.01 to 0.62 meters per day. A subset of WWTPs with RIBs indicate higher PFAS concentrations in groundwater than effluent with …

Moral Responsibility And Other Visceral Attitudes Of Western Michigan University Students Toward Food Waste, Quinn Heiser

Masters Theses

Despite the large number of people that go hungry on a regular basis in America, food waste remains a looming issue, globally and nationally. Both American college students and the universities themselves contribute a large portion to the national food waste totals. A dichotomy that is especially curious is the difference between students who live on-campus and whose main source of meals is the dining centers, versus students who live off campus and rely mainly on groceries to make meals independently. However, food waste has seldom been studied in the context of the fact that college is a major transition …

Echo Chambers And The Rise Of The Alt-Right, Ian Robert Mcdonald

Masters Theses

The uses of social media have expanded with the growing number of platforms and niches that these platforms seek to fulfill. One of the more common uses of many current social media platforms is to engage with politics. Social media platforms have become a political tool to some, with an enormous amount of news and information being shared throughout social media platforms. The increasing use of social media has coincided with an increase in political polarization, with some raising concerns over the ability for certain groups to operate in ideological isolation, referred to as echo chambers, and the role they …

The Effects Of Technology Based Self-Monitoring On Behaviors Related To Academic Engagement Of A University Student With A Disability, Rachel Mickelson

Masters Theses

College students with disabilities often experience difficulties with meeting the demands of university level courses due to challenges with time management and impulse control (Shmulsky & Gobbo, 2013). Self-monitoring has been proven effective for various populations and behaviors, although limited research has been conducted with college students with disabilities. I-Connect, a technology-based self-monitoring tool, is a digital application that utilizes momentary time sampling where users can select a behavior and interval of time to be prompted to self-monitor that behavior (University of Kansas, 2022). The app also collects real time data and automatically creates graphs to depict the responses collected …

Cocoa Production In The Era Of Crude Oil Economy: The Case Study Of Ondo State, Nigeria., Hakeem Shina Lamidi

Masters Theses

Nigeria's cocoa industry has been faced with obstacles that include a lack of adequate infrastructure, little or no research and development efforts for weather-related challenges and pest control, limited financial support for cocoa farming startups, absence of modern farming techniques, an aging agricultural workforce, and decrepit cocoa trees all of which have contributed to the decline in the production of cocoa by Nigeria. The Nigerian government's failure to prioritize agricultural policies and support farmers instead of relying on oil exports exacerbates these issues. While it is assumed that countries endowed with abundant natural resources, including oil, like Nigeria, would naturally …

Dietary Probiotic Supplement Attenuates Methamphetamine-Induced Conditioned Place Preference In Female Sprague-Dawley Rats, Kristen Powell

Masters Theses

Substance use disorders (SUD) represent a global public health crisis with limited effective treatment options. Recent findings implicate the gut microbiome and gut/brain axis in the pathophysiology of SUDs. Several preclinical studies have established that psychostimulants alter gut microbiome composition, but no published studies have assessed behavioral effects of dietary probiotic supplements on drug-induced behavioral changes. This study utilized rodent conditioned place preference (CPP) as a behavioral index of conditioned drug reward to determine if a dietary probiotic supplement alters the behavioral effects of (+)-methamphetamine (METH). Fifty-four adult female Sprague-Dawley rats were randomly assigned to receive either a standard rodent …

Brief Treatment For Ptsd: Promoting Trauma Recovery With A Five-Session Cognitive Processing Therapy Protocol, Sanela Kalakovic

Dissertations

Cognitive Processing Therapy (CPT) is a first-line treatment for trauma. CPT is traditionally administered over 12 sessions. This open clinical trial examined the feasibility and efficacy of a 5-session CPT protocol. The abbreviated protocol moves more quickly to the proposed therapeutic mechanism of action, cognitive restructuring, to alter unhelpful traumarelated thoughts and beliefs. The goal is to maintain efficacy while making therapy more efficient and thereby reducing barriers to trauma treatment. Using a repeated measures open clinical trial design (with embedded multiple baselines), 67 adults (M age = 43 years, 90% female, 79% White) with clinically significant post-traumatic stress disorder …

Estimating And Applying Parameters Necessary To Plan Cluster Randomized Trials (Crts) And Multisite Cluster Randomized Trials (Mscrts), Dea Mulolli

Dissertations

Cluster randomized trials (CRTs) are commonly used to study the effectiveness of educational interventions. During the design phase of a study, it is critical for researchers to ensure their studies are adequately powered to detect meaningful treatment effects, including both main and moderator effects. Designing CRTs with adequate power to detect main and moderator effects requires accurate estimates of design parameters. This research aims to advance the literature on design parameters for power analyses, specifically focusing on empirical estimates of intraclass correlations (ICCs). The work consists of three research papers that examine the role of including the teacher level in …

A Contingency Table Alternative To Poisson Regression In Comparing The Frequency Distributions Of Two Populations, Sandra Tay

Dissertations

When testing the conditional independence between a binary outcome and a binary treatment indicator, conditioned on a categorical variable with k levels, typically represented by a K × 2 frequency table, researchers often turn to Poisson regression and the Cochran-Mantel-Haenszel (CMH) test. However, a common challenge encountered in these analyses is the presence of treatment effect heterogeneity. Introducing an interaction term between treatment indicators and effect modifiers in log-linear regression offers potential solutions, yet the equidispersion assumption of Poisson regression remains problematic. On the other hand, the CMH test assumes similar treatment effects across all strata, disregarding potential variations among …

Creating Advanced Processes Through Utilizing Renewable Eutectics For Gas Capture And Separation, Ahmad Mohammad Rasheed Al-Bodour

Dissertations

Global efforts to reduce emissions of environmentally harmful gases have intensified, with carbon dioxide (CO2) being identified as the most significant greenhouse gas and a key target for reduction strategies. Carbon dioxide (CO2) has the highest potential of threatening the environment. It is recognized as one of the greenhouse gases which has the potential of negative effects on the human being, atmosphere, and the environment. Even though CO2 gas has negative effects but at the same time it has high potential to be exploited in beneficial ways. For instance, CO2 is used in the energy field to produce the so-called …

A Microgenetic Learning Analysis Of Contextuality In Reasoning About Exponential Modeling, Elahe Allahyari

Dissertations

This work explores the complex cognitive processes students engage in when addressing contextual tasks requiring linear and exponential models. Grounded within Piagetian constructivism and the Knowledge in Pieces (KiP) epistemological perspective (diSessa, 1993, 2018), this empirical study in a clinical setting develops a Microgenetic Learning Analysis (MLA) of the reasoning of 14 students from an Algebra II course. It reveals the critical role of cognitive disequilibrium as an essential cognitive state for conceptual development and the process of reorganizing knowledge systems. The study uncovers the fluctuations in students’ reasoning patterns and the significant impact on students’ reasoning patterns of task-specific …

Infusing Values Into Written Exposure Therapy: A Comparison Study, Maegan Campbell

Dissertations

Written Exposure Therapy is a brief, efficacious intervention for the treatment of PTSD symptoms. The WET protocol calls for the infusion of values into therapeutic work, however, does not detail how to incorporate these values work into the highly scripted treatment. This study compared the standard WET protocol with WET infused with values. The study examined differences across the two conditions on seven variables (PTSD scores, depression scores, value importance and consistency, quality of life, psychological flexibility, customer satisfaction, and therapeutic alliance). The sample was largely homogenous in gender, ethnicity, sexuality, and reported index trauma. The sample was largely white …

An Experimental Study Of Supervised Machine Learning Techniques For Minor Class Prediction Utilizing Kernel Density Estimation: Factors Impacting Model Performance, Abdullah Mana Alfarwan

Dissertations

This dissertation examined classification outcome differences among four popular individual supervised machine learning (ISML) models (logistic regression, decision tree, support vector machine, and multilayer perceptron) when predicting minor class membership within imbalanced datasets. The study context and the theoretical population sampled focus on one aspect of the larger problem of student retention and dropout prediction in higher education (HE): identification.

This study differs from current literature by implementing an experimental design approach with simulated student data that closely mirrors HE situational and student data. Specifically, this study tested the predictive ability of the four ISML classification models (CLS) under experimentally …

Macroevolution Meets Community Ecology: Does Species Interaction Influence Tempo And Mode Of Diversification In Fishes That Cross The Marine/Freshwater Boundary?, Victor De Brito

Dissertations

Evolutionary transitions between marine and freshwater ecosystems are an extreme ecological shift and expose fish lineages to novel abiotic and biotic settings. Yet, it remains unclear how those habitat transitions and the interaction with the newly invaded communities have altered the macroevolutionary dynamics of fish clades. The theory of ecological opportunity predicts that lineages that colonize species-poor regions will have greater potential for phenotypic diversification and speciation than lineages invading species-rich regions. Thus, transitions between marine and freshwaters in depauperate regions may promote adaptive radiation. While most major fish clades are restricted to either marine or freshwaters, so called transmarine/ …

The Role Of Evaluation Terms In The Quality Of Final Evaluation Reports In International Development Cooperation: A Multi-Phase Mixed Methods Study, Fanny J. Hernandez De Alvarez

Dissertations

In international development cooperation there is constant discussion about how to improve evaluation practices. Too little is known about where and which factors influence the quality of evaluation reports. Arguably, one influential factor is the quality of the terms of reference (TORs), which, in many sectors, are referred to as Requests for Proposals (RFPs). This study examines the role of the quality of TORs in positively affecting the design and conduct of evaluations, as well as the overall quality of final evaluation reports. This study also examines other factors that may contribute to the quality of final evaluation reports.

The …

Alternative Adjacency Matrices And Spatial Analysis, Jaeseong Hwang

Dissertations

Spatial analysis is essential for comprehending the spatial distribution of diseases and various phenomena across geographic regions. This study investigates the utilization of alternative adjacency matrices in spatial analysis, with a specific focus on implementing Poisson regression models. This study intricately explores the methodology behind constructing alternative weight matrices, specifying weight matrices, and comparing the performance of Poisson models using five different weight matrices.

The popular Poisson model model is described, and five different definitions of weight matrices are defined, which are the following: binary weight matrix, inverse distance weight matrix using Euclidean distance, Graph distance matrix, Path matrix, and …

A Brief Self-Compassion Intervention For Survivors Of Sexual Trauma With Psychological Distress, Natalie Marie Hogue

Dissertations

Individuals who have experienced sexual trauma are at an increased risk of psychological disorders and psychological distress (Dworkin, 2020; Dworkin et al., 2017; Dworkin & Schumacher, 2018). Sexual trauma has one of the highest conditional risks for the development of posttraumatic stress disorder (Domino et al., 2020; Perrin et al., 2014). Experiential avoidance, shame, and posttraumatic cognitions are associated with psychological distress after experiencing sexual trauma (Bhuptani et al., 2019; Domino et al., 2020; Foa et al., 1999; Merwin et al., 2009). Established research suggests that self-compassion-based therapies can be effective in reducing psychological distress and treating a wide range …

Modeling Blue Mondays: A Preclinical Evaluation Of 3,4-Methylenedioxymethamphetamine Binge Dosing On Responding Maintained By A Progressive Ratio Schedule Of Food Reinforcement In Male Sprague-Dawley Rats, Candace Brenda Johnson

Dissertations

3,4-Methylenedioxymethamphetamine (MDMA) has been abused recreationally in the rave scene for decades. As pharmacotherapy research has progressed to develop alternative medications to treat trauma-related psychiatric symptoms, MDMA has become a prime candidate for medication-assisted psychotherapy in the treatment of PTSD and will soon be FDA approved for medicinal use. Despite convincing evidence for favorable clinical outcomes, this substance has been known to contribute to acute depressive states following excessive use. The sharp decrease in mood and cognitive impairment following MDMA use is colloquially termed Blue Mondays. Measuring lack of motivation or more broadly anhedonia through withdrawal of acute and chronic …

Long Covid Patients: A Phenomenology Study Exploring Mental Health And Psychosocial Adaptation To Disability, Tonia Joy Lans

Dissertations

In the United States, approximately 1 in 13 long COVID patients experience adverse complications two to three years post-recovery (Centers for Disease Control and Prevention, 2022), including physical, psychological, and cognitive impairment, issues with daily functioning, and difficulties returning to work (del Rio et al., 2020; Greenhalgh et al., 2020; Ladds et al., 2020; Logue et al., 2021). Moreover, collective research has indicated the debilitating complications of long COVID often result in impaired mental health, chronic illness, and disability. While significant research efforts have started to accumulate data to understand and treat the physical and neuro-logical manifestations of this chronic …

On Near-Linear Cellular Automata Over Near Spaces, Abdul-Rahman M. Nasser

Dissertations

Cellular Automata can be considered as examples of massively parallel machines. They are computational mathematical objects consisting of a grid of cells, each of which can exist in a finite number of states. These cells evolve over discrete time steps according to a set of predefined rules based on the states of neighboring cells. The notion of cellular automata was first introduced by Ulam and von Neumann and then popularized by John H. Conway in the 1970s with one of the most famous examples being The Game of Life.

This research builds on and generalizes the work of Tullio Ceccherini-Silberstein …

Using Video Prompting To Teach Daily Living Skills To Young Adults With Disabilities, Melissa Anne Rajter

Dissertations

Young adults with disabilities may experience difficulties with the daily living skill of meal preparation. Such skills are significant for independent living, employment, and overall quality of life. Previous research has identified video prompting daily living skills as an effective practice that supports independent living. Furthermore, research on young adults with disabilities and video prompting daily living skills has shown an increase in the percentage of correct responses for meal preparation, compared to no use of video prompting. The purpose of the present study was to teach and assess three cooking recipes as a daily living skill for seven young …

3d Automated Surgeon’S Hand Motion Assessment Using A Cascade Fuzzy Supervisor During Intelligent Box-Trainer System Skills Training In A Multi-Thread Video Processing, Fatemeh Rashidi Fathabadi

Dissertations

For certain surgical procedures, Minimally Invasive Surgery (MIS) has become more advantageous than traditional open surgery. Therefore, mastery of laparoscopic skills is an essential component of surgical training and requires considerable time and effort. The Fundamentals of Laparoscopic Surgery (FLS) program has been developed as a tool to improve and assess fundamental surgical skills. In fact, using a low-cost Box-Trainer or a simulator, laparoscopic surgeons are required to train using a set of structured tasks that can be objectively used to assess their laparoscopic skills, which must be mastered before carrying out real-life laparoscopic procedures. These tasks include peg transfer, …

Quasi-Monte Carlo Estimation For Functional Generalized Linear Mixed Models., Ruvini Kumari Jayamaha Hitihamilage

Dissertations

Functional Data Analysis (FDA) is a topic of growing interest in the statistics community and is applied in a wide range of fields such as Anthropology, Epidemiology, Meteorology, Neurology and Engineering. The data in FDA are smooth curves or surfaces in time or space which can be conceptualized as functions. Because of the smooth nature of the data and the measurements are highly correlated, making the classical methods such as univariate or multivariate analysis are infeasible for such data. Functional data Analysis (FDA) deals with these kinds of more detailed, complex, and structured data.

In this dissertation, we propose a …

The Synthesis, Characterization, And Application Of Polysaccharide-Based Additive To Improve Wet And Dry Strength And High-Barrier Properties Of Paper Products, Cornellius Marcello

Dissertations

Paper products play an essential role in our daily lives owing to their low cost, environment-friendly character, renewability, and recyclability. Paper manufacturers have been using petroleum-based strength additives (cPAM, GPAM, PAE) to meet the perceived needs of customers. On the other hand, paper produced from cellulose is hydrophilic and porous, leading to shallow water and grease resistance, causing paper manufacturers to use many kinds of coating materials such as poly-fluoroalkyl substances (PFAS) and synthetic plastic to improve water resistance, especially for food packaging paper products like cups, plates, food boxes, and packaging. However, PFAS are identified as likely carcinogenic to …

Printed Graphite Electrodes For Fast-Charging Lithium-Ion Batteries, Guanyi Wang

Dissertations

The rapid growth of the electric vehicle (EV) market has demanded lithium-ion batteries (LIBs) with high energy density and fast charging capability. However, charging energy-dense LIBs with thick graphite electrodes at high current densities is typically facing challenges and leading to adverse performance, such as low energy density, short cycle life, rapid temperature rises and safety issues. The root cause is the onset of Li plating. During fast charging application, the sluggish lithium ions accumulated at the surface of graphite due to kinetic limitation and formed Li plating, especially when lithiated to a high state of charge (SOC). It has …

A Model For Spacecraft Relative Motion Using Continuous Periodic Thrust, Philip Alan Hittepole

Dissertations

A model for modifying the relative orbit of a deputy satellite with respect to a chief satellite in a near-circular orbit using continuous periodic thrust is presented. This model is built on the Lovell-Spencer relative orbital elements (ROEs). The four linear ROEs (xr, yr, ar, and Az) can be linearly modified. The two angular ROEs (Er and ) can be set to advance at a desired, constant rate. Each ROE can be modified individually but may cause intra-orbit variations in other ROEs which return to their original values at the end of a thrust cycle. A method to easily calculate …

Master Narrative Of College Access Belies Reality For Today’S Students, Jonathan S. Lewis, René A. Hernandez

Journal of College Access

Master and alternative narratives offer a useful framework through which to consider contemporary issues in college access. Implicit and ubiquitous, the master narrative of a linear progression from high school through a residential college toward a fulfilling career has long been dominant. Meanwhile, alternative narratives of fluid, dynamic, alternate pathways are ascendant, having received a boost from the Covid-19 pandemic and the stubborn lack of affordable postsecondary options. Observing a decline in a shared cultural narrative about college, the authors recommend that advisors help students to sort through possible storylines and then write their own.

From Pre-College Grads To Undergrads: Encouraging Full-Time Enrollment After Summer Programs, Meghan Buckley Ph.D.

Journal of College Access

This guest perspective argues that converting in-person summer pre-college program participants into matriculated, degree-seeking undergraduate students at that same institution is a multi-step process that involves: 1) strategic pre-college program recruitment, 2) a curated and well-rounded summer pre-college experience that is both academically rigorous and socially dynamic, and 3) continued and consistent post-program engagement. It also argues that summer pre-college programs should work intentionally with Admissions departments during pre- and post-program development to create the most effective recruiting and enrollment pipelines from pre-college to eventual matriculation

Navigating Improvement For A Master Of Occupational Therapy Program: Enhancing Content For A Mental Health Course, Emily Markovicz

Capstone Projects

Education is the forefront to the field of occupational therapy. As occupational therapists advocate for the significance of their profession, it is expected to grow further. In recent decades, the research of many health professions have increasingly explored the impact of trauma. As occupational therapy evolves to address this public health concern, more research, increased integration into occupational therapy curriculum, and clear practical guidelines are necessary. Considering the mental health risks stemming from adverse life events, the complexities of mental health conditions should remain a crucial part of occupational therapy education, ensuring that students are well-prepared to deliver optimal care …