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From Young To Old: The Effects Of Sedentary-Aging And Exercise Interventions On Structural Plasticity Of Lumbar Motor Neurons, Nmj, And Glial Cell Line-Derived Neurotrophic Factor Expression, Alberto Felipe Cintron-Colon

Dissertations

Neuromuscular weakness has been associated with age progression. A possible reason is a disconnection between muscle and neuron, causing components from both the central and peripheral nervous systems to deteriorate. Exercise, however, has beneficial effects for both muscle and nervous tissue, inducing neuroprotection. Neurotrophic factors are powerful regulators of neuronal maintenance and synaptic strength. Glial cell line-derived neurotrophic factor (GDNF) is a neurotrophic factor that has been shown to be a potent survival factor for somatic motor neurons that innervate skeletal muscle.

This study aims to evaluate changes in structural plasticity of motor neurons in the lumbar spinal cord and …

Development Of Flexible Hybrid Electronics For Sterilization And Structural Health Monitoring Applications, Arnesh Kumar Bose

Dissertations

No abstract provided.

The Experiences Of Undergraduate Saudi Students In The Stem Trajectory: A Closer Look At Major Choice And Persistence Intentions, Manal Almalki

Dissertations

STEM fields (Science, Technology, Engineering, and Mathematics) are a key source of economic progress in many countries. As the Kingdom of Saudi Arabia works toward an innovative and knowledgeable economy, more qualified national professionals in STEM are needed. Nevertheless, the problem of STEM attrition is still insufficiently explored in Saudi Arabia, which may indicate a gap between skills of the Saudi workforce and the country’s need for economic development. Therefore, this study attempts to provide more information about the STEM trajectory in Saudi Arabia, underline possible attrition points that require more attention, deliver a better understanding of the factors that …

The Use Of Racialized Preferential Language On Dating And Hookup Apps Among Men Who Have Sex With Men, Lorenz Angeles

Dissertations

The use of racialized preferential language (RPL) to advertise desire or lack thereof on dating and hookup apps among men who have sex with men (MSM) is a point of contention: might such statements be expressions of sexual liberty, or might they be manifestations of racism and discrimination in the online space? To address this issue, 561 MSM were surveyed regarding their dating/hookup app use; awareness of as well as sensitivity and receptivity to racial diversity and gender equality; and acceptance of racialized partner discrimination. Relationships among participant attitudes, RPL dis/use, experiences of in/exclusion, and demographic characteristics were elucidated, as …

Centering Culture And Relationships In Learning: Culturally Responsive Teaching In Higher Education, Valerie Vistain

Dissertations

In colleges and universities all across the United States, the amount of culturally and linguistically diverse students has increased significantly. Research has shown that when educators can develop educational practices and curricula that account for and incorporate students’ cultural frameworks, outcomes improve for culturally and linguistically diverse students. Culturally responsive teaching is a pedagogical approach that does just that. This research project aimed to bring to light the various ways that general education professors define and enact culturally responsive teaching practices. It further illustrates how students receive and interpret these culturally responsive approaches. Using the general education college within a …

Activities Negatively Influencing Retention Of African American College Students And Leadership Strategies To Increase Retention, Melvaughn Thompson

Dissertations

The purpose of this study was to recognize the decrease in retention of African American college students. What are some of the reasons for a decrease in retention and what do the leaders do about it? Leadership can develop and implement to recruit and increase retention of some of these African American academic students. The college dropout rates on college campuses overall are 40%, with 30% of these students being freshman and sophomores. The theoretical framework for this study is based on the expectancy theory of motivation which is a process theory of motivation (Vroom, 1964). An individual's motivation (Valence) …

Exploring The Development Process Of Innovative Graduate Programs For Adult Learners At A U.S. Midwestern Public University, Ibrahim Rustamov

Dissertations

This case study explores the development process of two innovative graduate programs designed to serve the needs of adult learners for programs at a U.S. Midwestern public university. This case study also explores how leaders addressed issues of allocating funding and other resources, contributed to improved processes, and addressed the problem of resistance to change during and after the development and implementation of such programs. Additionally, it also examines how they plan to support further development of graduate programs that integrate specific innovative and alternative approaches such as prior learning assessments and/or competency-based education.

For this study, I used a …

The Language-Dream Relationship In Multilinguals, Brittany Dishaun Burkes

Dissertations

According to the United States Census Bureau, the United States alone is host to around 350 languages. When it comes to investigating languages in dreams by multilinguals, some studies have focused heavily on only two languages—Spanish and English. The purpose of this study was to add to the understanding of how language use relates to the dream content of multilinguals. This study recruited the assistance of nine polylingual individuals. The participants were instructed to record their dreams in the languages in which they occurred for 2 weeks. After 2 weeks, the participants translated their dreams into English in order for …

The Elementary School Principal's Influence On Teacher Hiring Practice & Decision Making, Courtney Goodman

Dissertations

In the role of a building principal, the hiring process is among the most critical components of the job, particularly hiring the right people for the right positions. Yet, hiring approaches vary from principal to principal, building to building, district to district. This study surveyed and interviewed principals and administrators about their hiring processes to determine the most effective and evidence-based approaches to hiring. It identifies several strategies to streamline the hiring process, including using a common set of tools for hiring, adhering to a set timeline for the hiring process, and focusing on criteria for hiring decision-making. This research …

Narratives Of Black Female Elementary School Teachers: Navigating The Normative Discourse Of Whiteness, Thera Tilmon

Dissertations

This narrative research study illuminates the experiences of Black elementary school teachers as they navigate through whiteness on their identity journey. The purpose of this study was to examine the counter-narratives of identity by Black female elementary school teachers within the discourse of Whiteness that remains dominant in the U.S. culture and public school system. This study included semi-structured interviews with six participating teachers from several school districts in a large Midwestern metropolitan city. critical race theory, Black feminist theory, intersectionality, and transcendental theories comprised the theoretical underpinnings of the study. Narrative research design was employed for data analysis resulting …

A Case Study Examining How Students In An Elementary, Early Childhood, And Exceptional Child Educator Preparation Program Acquire Technology Skills, Jana L. Gerard

Dissertations

This qualitative case study examined two sections of an educational technology class that was part of an elementary, early childhood, and exceptional child educator preparation program, to determine how students acquired educational technology skills for future teaching. As the ability to integrate educational technology skills into teaching and learning is vital to preservice educators, this study aimed to address possible changes needed in educator preparation programs to ensure preservice educators are ready to effectively teach with educational technology in their field experiences, student teaching, and future classrooms. In order to examine how students acquired educational technology skills, the researcher observed …

Organizational Culture In Schools: The Impact Of Positive Culture On Staff Retention At Vista Charter Academy, Karrie Elizabeth Munster

Dissertations

No abstract provided.

Prevalence Of Lost Time Injuries And Fatalities Among Construction Workers In Al Ain, United Arab Emirates (Uae), Ghuwaya Humaid Alnuaimi

Dissertations

Migrants account for more than 80% of the total population of the United Arab Emirates (UAE). Few population-based data were available about the burden of lost time injuries (LTIs) and fatalities among migrant workers employed in the construction industry. The proposed study aimed to estimate the prevalence of LTIs and associated factors, and fatalities among construction workers in Al Ain, of Abu Dhabi Emirate in the UAE. A cross-sectional study design was used to estimate the prevalence of LTIs resulting in one or more than a day of sick leave in a random sample (n=1,626) of male construction workers in …

Diagnostics Of Dementia From Structural And Functional Markers Of Brain Atrophy With Machine Learning, Tetiana Habuza

Dissertations

Dementia is a condition in which higher mental functions are disrupted. It currently affects an estimated 57 million people throughout the world. A dementia diagnosis is difficult since neither anatomical indicators nor functional testing is currently sufficiently sensitive or specific. There remains a long list of outstanding issues that must be addressed. First, multimodal diagnosis has yet to be introduced into the early stages of dementia screening. Second, there is no accurate instrument for predicting the progression of pre-dementia. Third, non-invasive testing cannot be used to provide differential diagnoses. By creating ML models of normal and accelerated brain aging, we …

Effects Of A Workplace Exercise Intervention On Cardiometabolic Health: Randomized Controlled Trial, Ali Muneer Al Rahma

Dissertations

Brief Introduction: The worldwide rising levels of physical inactivity, especially in the United Arab Emirates (UAE) and the Eastern Mediterranean region, are alarming. The UAE reports one of the highest rates of mortality due to non-communicable diseases, and insufficient physical activity is a major underlying cause. Therefore, action is required to reduce physical inactivity using evidence-based strategies.
/="/">Aims: To evaluate the effect of a 12-week workplace structured exercise intervention on cardiometabolic risk factors and to determine whether the workplace exercise intervention improves physical activity levels four weeks post-intervention.
/="/">Methods: This is a pragmatic parallel, randomized controlled trial with …

A Case Study Of Secondary Students' Perspectives On Standards-Based Grading And The Development Of 21st Century Learner Attributes, Michelle Blackley

Dissertations

Implementation of standards-based grading (SBG) practices can be a high benefit, low-cost initiative that directly impacts student achievement and growth. This case study aimed to determine if the theoretical value of SBG outlined in research aligns to the students’ perspectives of its value on academic learning, growth and development of 21^st century skills. Secondary students were interviewed and responses were organized into three themes: development of 21st century learner attributes, strengths of SBG and areas to improve. Results revealed that SBG supports individualized learning pace, development of a growth mindset, emotional well-being, student to teacher collaboration and 21^{st …}

Teacher Perceptions Of Gender Differences In An Elementary Pbis System, Meggan Buchanan

Dissertations

This research project examined teacher perceptions of gender differences in an elementary Positive Behavior Intervention and Supports (PBIS) System. The purpose of the project was to understand why male students were referred to the office at a higher rate than female students. The research was conducted through a staff survey and disaggregating seven years of Office Discipline Referral (ODR) data through School-wide Information System (SWIS). The critical issues explored are the number of referrals, the types of referrals received, and teachers' perception of gender differences in the PBIS system. It is my hope that this research will help provide the …

Utility Of The Motivation To Change Lifestyle And Health Behaviors For Dementia Risk Reduction Scale (Mclhb-Drr) Based On A North American Sample, Angelina E. Witbeck

Dissertations

As the population ages, the prevalence rates of dementia continue to increase. Without a cure or promising treatment for dementia, the best course of lowering the prevalence rates of dementia is through preventative measures. Through an electronic survey, the study utilized the MCLHB-DRR scale to determine whether (1) gender, age, educational background, and socioeconomic status will impact the motivational factors to change lifestyle and health behaviors to reduce the risk of developing dementia and (2) direct experiences with individuals that have a dementia diagnosis are likely to impact one's motivational factors to change lifestyle and health behaviors to reduce the …

The Life Story Analysis Of Those Suffering From Autoimmune Thyroiditis, Azalea Di Nardi

Dissertations

The purpose of this study was to understand the pervasive impacts of autoimmune thyroiditis, specifically Hashimoto’s and Graves’ disease. To accomplish this, the life story methodology was utilized to gather individual experiences from 11 participants diagnosed with Hashimoto’s or Graves’ disease. The participants completed a background and general health questionnaire and 45- to-100-minute virtual interview disclosing their journey from the onset of symptoms, through diagnosis, to their most recent state. Themes were compiled from the interviews, which allowed identification of the largest areas of impact, needs, and future implications for practitioners and providers. Major themes identified were decreased quality of …

The Relationship Between Adolescent Exposure To Community Violence, Depression, And Resilience, Nieves A. Esquivel

Dissertations

The present study experimentally investigated the development of depressive symptoms in adolescents who have been exposed to community violence. Participants (N=334) were asked to take a survey of 81 questions addressing one’s exposure to neighborhood violence, resilience, and depressive symptoms. Participants exposed to community violence reported more depressive symptoms in every category except Ineffectiveness. Participants who were exposed to community violence also reported higher resilience levels. Given the results, more research is needed to understand the specific factors of resilience that may prevent adolescents exposed to community violence from developing depressive symptoms.

Uniting African Philosophy With Traditional African Dance Rituals To Help Heal Mental Health Symptoms From The Impact Of The African Diaspora, Brittnea Jones

Dissertations

The mental health challenges of members of the African diaspora have been a worldwide occurrence for centuries, initially beginning with the transatlantic slave trade. Africans were scattered abroad to different countries and subjected to the severe psychological impact of enslavement. Despite the considerable financial systemic pressure of profit in the slave trade, it caused significant harm to the enslaved Africans and their descendants by erasing Africa's memory and their healing traditions from the hearts and minds of the population. Severe mental health symptoms can arise from oppression and the impact of the African diaspora. This dispersion has left many African …

The Impact Of Psychological Abuse On A Female’S Engagement In Subsequent Relationships And How They Heal From The Abuse, Nicole Kratimenos

Dissertations

ABSTRACT

Objective: This study examined (a) the impact of psychological abuse on a female’s subsequent intimate relationships, and (b) what assisted the female victims of such abuse to heal and build subsequent healthy relationships. Psychological intimate partner abuse is connected to various long-term negative consequences, such as anxiety, posttraumatic stress disorder, self-esteem struggles and trust issues. However, no studies have investigated how these negative consequences affect the female victim’s subsequent intimate relationships, nor what helps the victim heal enough to move on to engaging in healthy subsequent relationships. This study is the first to examine both of these aspects of …

Categorizing Reentry And Reintegration Efforts Across Five States, Modena Stinnette

Dissertations

An average of 12,500 individuals are released from correctional control institutions in America each week. The reentry and reintegration of formerly incarcerated individuals into communities has become a relevant concern. This collateral damage caused by mass incarceration continues to challenge correctional institutions and community-based service providers to create better pathways for individuals returning home. Ending the collateral damage caused by mass incarceration will require a change in the way reentry and reintegration are defined, policies are created, recidivism is defined, and services are provided to individuals affected by mass incarceration. This research explores reentry and reintegration practices across five states. …

They Don'y Expect You To Know Much: Black African International Students Encountering And Countering The Afropessimistic Attitude Within Academic Spaces, Margaret Sergon

Dissertations

Black African international students in the United States are vulnerable to increased microaggressions because of their minority statuses. In addition to being Black and speaking with non-native accents, African students must contend with Afropessimism which in this study refers to the Western world’s negative perception of Africa. The study is a mixed methods study that seeks to understand how the Afropessimistic attitude impacts the way Black African international students are perceived and interacted with, within the academic spaces. The findings indicate that African international students consistently encounter the Afropessimistic attitude, and it impacts their academic engagement. The findings also suggest …

One-Stage Blind Source Separation Via A Sparse Autoencoder Framework, Jason Anthony Dabin

Dissertations

Blind source separation (BSS) is the process of recovering individual source transmissions from a received mixture of co-channel signals without a priori knowledge of the channel mixing matrix or transmitted source signals. The received co-channel composite signal is considered to be captured across an antenna array or sensor network and is assumed to contain sparse transmissions, as users are active and inactive aperiodically over time. An unsupervised machine learning approach using an artificial feedforward neural network sparse autoencoder with one hidden layer is formulated for blindly recovering the channel matrix and source activity of co-channel transmissions. The BSS sparse autoencoder …

Optimizing Speed Profiles For Sustainable Train Operation With Wayside Energy Storage Systems, Leon A. Allen

Dissertations

Large hauling capability and low rolling resistance has put rail transit at the forefront of mass transportation mode sustainability in terms of congestion mitigation and energy conservation. As such, rail vehicles are one of the least energy-intensive modes of transportation and least environmentally polluting. Despite, these positives, improper driving habits and wastage of the braking energy through dissipation in braking resistors result in unnecessary consumption, extra costs to the operator and increased atmospheric greenhouse gas emissions.

This study presents an intelligent method for the optimization of the number and locations of wayside energy storage system (WESS) units that maximize the …

Understanding The Voluntary Moderation Practices In Live Streaming Communities, Jie Cai

Dissertations

Harmful content, such as hate speech, online abuses, harassment, and cyberbullying, proliferates across various online communities. Live streaming as a novel online community provides ways for thousands of users (viewers) to entertain and engage with a broadcaster (streamer) in real-time in the chatroom. While the streamer has the camera on and the screen shared, tens of thousands of viewers are watching and messaging in real-time, resulting in concerns about harassment and cyberbullying. To regulate harmful content—toxic messages in the chatroom, streamers rely on a combination of automated tools and volunteer human moderators (mods) to block users or remove content, which …

A Self-Learning Intersection Control System For Connected And Automated Vehicles, Ardeshir Mirbakhsh

Dissertations

This study proposes a Decentralized Sparse Coordination Learning System (DSCLS) based on Deep Reinforcement Learning (DRL) to control intersections under the Connected and Automated Vehicles (CAVs) environment. In this approach, roadway sections are divided into small areas; vehicles try to reserve their desired area ahead of time, based on having a common desired area with other CAVs; the vehicles would be in an independent or coordinated state. Individual CAVs are set accountable for decision-making at each step in both coordinated and independent states. In the training process, CAVs learn to minimize the overall delay at the intersection. Due to the …

Local Learning Algorithms For Stochastic Spiking Neural Networks, Bleema Rosenfeld

Dissertations

This dissertation focuses on the development of machine learning algorithms for spiking neural networks, with an emphasis on local three-factor learning rules that are in keeping with the constraints imposed by current neuromorphic hardware. Spiking neural networks (SNNs) are an alternative to artificial neural networks (ANNs) that follow a similar graphical structure but use a processing paradigm more closely modeled after the biological brain in an effort to harness its low power processing capability. SNNs use an event based processing scheme which leads to significant power savings when implemented in dedicated neuromorphic hardware such as Intel’s Loihi chip.

This work …

Optimization Opportunities In Human In The Loop Computational Paradigm, Dong Wei

Dissertations

An emerging trend is to leverage human capabilities in the computational loop at different capacities, ranging from tapping knowledge from a richly heterogeneous pool of knowledge resident in the general population to soliciting expert opinions. These practices are, in general, termed human-in-the-loop (HITL) computations.

A HITL process requires holistic treatment and optimization from multiple standpoints considering all stakeholders: a. applications, b. platforms, c. humans. In application-centric optimization, the factors of interest usually are latency (how long it takes for a set of tasks to finish), cost (the monetary or computational expenses incurred in the process), and quality of the completed …