Digital Commons Network^™

Thermal Management For Optimal Performance Of Unitized Regenerative Fuel Cells, Mythy T. Tran

Mechanical & Aerospace Engineering Theses & Dissertations

As the race to net zero energy intensifies around the world, hydrogen production and fuel cell technologies are attracting more attention, and the technologies are growing rapidly. Together, hydrogen production and fuel cell technologies hold potential for a reliable, green, and sustainable energy system. Hydrogen is an excellent energy carrier and can be produced from various sources, especially green and renewable sources. Fuel cells generate electricity and water from hydrogen and oxygen. In reverse mode, fuel cells operate as electrolyzers to produce hydrogen and oxygen from electricity and water. However, the major drawback that keeps hydrogen and fuel cells from …

Investigating The Effects Of Empathy On Implicit Race Bias, Macy Kisiel

Psychology Theses & Dissertations

Over the years there have been changes to social norms, which now discourage expressions of prejudice, and changes in many people’s self-reported attitudes, but prejudice is still a major issue in present-day American society. One important step toward addressing prejudice and social injustices is to understand the psychological processes that underlie and strengthen them. The current study aimed to use an empathy passage to positively prime the schema about a minority person of color and manipulate regulation of implicit bias. The study utilized a mixed 2 × 2 design. Sixty-four participants (Mage = 20.88 years, SD = 4.75 years) were …

A Self Consistent 2d Simulation Of Coherent Synchrotron Radiation Effects On Beam Dynamics, Dallan Duffin

Physics Theses & Dissertations

An increasing interest in high quality and high current electron beams necessitates a thorough understanding and prediction of coherent synchrotron radiation effects. The self-interaction of charged particles in a beam undergoing synchrotron motion is a physically significant process that is all too often computationally intensive with very little analytical results to rely on for the general case. The coherent spectrum of this interaction is of utmost importance to the design of free electron lasers (FELs) and an accurate assessment is imperative for their design. This work presents a novel implementation to the numerical simulation of charged particle beams. The simulation …

Self-Identifying Minoritized Doctoral Students’ Experiences Of Epistemic Injustice In Counselor Education And Supervision, Francisca Rivas

Counseling & Human Services Theses & Dissertations

The purpose of this qualitative study was to examine and understand how epistemic injustice (EI) is experienced by minoritized doctoral students in Counselor Education and Supervision programs. The primary researcher performed a phenomenological study examining the experiences of EI for minoritized CES students (n = 8). There were three female participants with an average age of 31, two male participants with an average age of 31, and three nonbinary/trans participants with the average age of 33. Five participants were BIPOC, one being an international student, and six participants were LGBTQPA+. Five participants held Ph.Ds. at time of their interview, having …

Competing In The Stress Olympics: Mid-Level Managers And Their Experiences Of Work Stress As Impacted By Their Supervisors And Organizational Climate, Melissa Jane Hecker Scott

Educational Leadership & Workforce Development Theses & Dissertations

Student affairs has a problem due to staff attrition (Rosser & Javinar, 2003). Most professionals leave the field due to job dissatisfaction, unhealthy work environments, high stress, and low morale (Marshall et al., 2016; Rosser & Javinar, 2003). Researchers have identified a relationship between job stress and burnout and intentions to leave the field of student affairs (Mullen et al., 2018). Turnover of positions is financially detrimental to the institution due to the cost of recruitment, hiring, and training the replacement employee (Agovino, 2019). In addition to the financial impact, when mid-level managers leave, there is a loss of institutional …

Examining The Effects Of Video Camera Angles On Interpersonal Impressions, Rachel Valerie Ball

Psychology Theses & Dissertations

The effect of different camera angles on the perceptions of the speaker formed over a virtual interaction, especially in the context of telehealth encounters, has not been systematically investigated. The present study explored how vertical and horizontal angles impact perceptions of a healthcare provider in a video encounter using a 2 (angle type: eye level vs. alternate angle) X 2 (video order: eye level presented first vs. alternate angle presented first) mixed design. Participants watched two different segments of an encounter where camera angle was examined within subjects and order of presentation was examined between subjects. It was hypothesized that …

Do Parents Know Best: The Impact Of Parental Sleep Knowledge And Related Factors On Sleep In Children With Neurodevelopmental Disorders, Rachel Nicole Chavez

Theses and Dissertations

Sleep problems are a common concern reported by parents of children with neurodevelopmental disorders (NDD). The prevalence of sleep disorders in those with NDD have been reported as high as 86% compared to 25% of typically developing children (Horwood et al., 2019, Robin-Shelton, 2016). These sleep problems can have detrimental effects on cognition, development, behavior, emotion regulation, and physical health. Existing research demonstrates a significant relationship between a child’s sleep disturbances and their parents’ sleep quality and level of parenting stress. This study aimed to identify the gaps in parental sleep knowledge and examined how parent sleep quality and parental …

Out Of Left Screen: Factors Impacting Well-Being In Digital And Physical Collegiate Athletes, Jessica Poskus

Theses and Dissertations

Competitive video gaming, or “esports,” has quickly become a popular college extracurricular. Its classification as a varsity sport on many campuses reflects a broader shift in cultural conceptualizations and perceptions of athleticism. As esports continue to evolve in today’s increasingly digital world, new professional leagues emerge, and viewership rivals that of traditional physical sports. Esports can be a gateway for unique opportunities for college students; however, it may also pose some challenges. This study explored differences between digital and physical athletes, who must balance their chosen activity with other collegiate responsibilities, including academic, social, and physical health. Physical sports and …

Vesicular Monoamine Transporter-2 Inhibitor Jpc-141 Prevents Methamphetamine-Induced Dopamine Toxicity And Blocks Methamphetamine Self-Administration In Rats, Cassie M. Chandler, Justin R. Nickell, A. George Wilson, John P. Culver, Peter A. Crooks, Michael T. Bardo, Linda P. Dwoskin

Psychology Faculty Publications

Previous research has demonstrated therapeutic potential for VMAT2 inhibitors in rat models of methamphetamine use disorder. Here, we report on the neurochemical and behavioral effects of 1-(2-methoxyphenethyl)-4-phenethypiperazine (JPC-141), a novel analog of lobelane. JPC-141 potently inhibited (Ki = 52 nM) [3H]dopamine uptake by VMAT2 in striatal vesicles with 50 to 250-fold greater selectivity for VMAT2 over dopamine, norepinephrine and serotonin plasmalemma transporters. Also, JPC-141 was 57-fold more selective for inhibiting VMAT2 over [3H]dofetilide binding to hERG channels expressed by HEK293, suggesting relatively low potential for cardiotoxicity. When administered in vivo to rats, JPC-141 prevented the METH-induced reduction in striatal dopamine …

Family-Building Desires Among Adopted Adolescents With Lesbian, Gay, And Heterosexual Parents, Abbie E. Goldberg, Lea Silvert, Rachel H. Farr

Psychology Faculty Publications

Objective: This study qualitatively examined family-building desires of diverse adopted adolescents. Background: Research on parenting aspirations has rarely included youth with LGBTQ+ parents and/or from adoptive families. Understanding diverse adopted adolescents' feelings about parenthood may yield insights regarding identity and ideas about family. Methods: We conducted a thematic analysis of interview data from 48 adopted adolescents (27 were LGBTQ+) in the United States, aged 13 to 18, from lesbian, gay, and heterosexual two-parent families. Results: Most adolescents desired future parenthood, after achieving other normative milestones, and they typically did not feel familial or societal pressure to become parents. LGBTQ+ participants …

Measuring Mind Wandering With Experience Sampling During Task Performance, Anthony P. Zanesco, Nicholas T. Van Dam, Ekaterina Denkova, Amishi P. Jha

Psychology Faculty Publications

The tendency for individuals to mind wander is often measured using experience sampling methods in which probe questions embedded within computerized cognitive tasks attempt to catch episodes of off-task thought at random intervals during task performance. However, mind-wandering probe questions and response options are often chosen ad hoc and vary between studies with extant little guidance as to the psychometric consequences of these methodological decisions. In the present study, we examined the psychometric properties of several common approaches for assessing mind wandering using methods from item response theory (IRT). IRT latent modeling demonstrated that measurement information was generally distributed across …

Classifying Open Access Business Models, Tasha Mellins-Cohen

Copyright, Fair Use, Scholarly Communication, etc.

The proliferation of open access (OA) business models has been rapid, presenting challenges for stakeholders in communicating and working effectively with one another. This article aims to clarify terminologies and address the inconsistencies and gaps in previous attempts to categorize OA models, supporting informed decision-making. It presents five core types, each with distinct characteristics and implications for funding, equity, and implementation. Operating at the level of individual pieces of content, transactional models expose authors to the financial implications of their decisions to make content OA; they often must pay out of their own funds. Driven by negotiations between libraries or …

Voltage-Controlled Spintronics And Fundamentals Of Magnetoelectricity In Magnetoelectric Antiferromagnetic Chromia, Syed Qamar Abbas Shah

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

Spintronics, which exploits both the spin and charge of electrons, offers a path to more energy-efficient and functionally enhanced devices compared to traditional CMOS electronics. A significant development in this field is voltage-controlled spintronics, where electric fields manipulate magnetic and spin states without the large power dissipation seen in current-based technologies. Among the materials explored for this purpose, magnetoelectric (ME) antiferromagnetic (AFM) materials show promise for energy-efficient, non-volatile memory technologies. Controlling AFM ordering via voltage application is essential for realizing these devices.

This dissertation focuses on ME AFM materials, specifically chromia (Cr₂O₃), to advance voltage-controlled spintronics. …

2024-10-01, Board Of Regents, Murray State University

Board of Regents Meeting Minutes

No abstract provided.

Irian Christie's Art399 Portfolio, Irian Christie

Professional Practices (ART 399)

My art weaves together personal experiences and cultural heritage through drawings, paintings, and sculptures. Each piece tells a story about family, identity, and Indonesian roots, inviting viewers to engage with moments of joy, growth, and reflection. I draw inspiration from childhood memories, family traditions, and cultural symbolism, using bright colors and playful imagery to evoke emotions ranging from happiness to introspection. By sharing these personal narratives, I hope to encourage others to reflect on their own stories and connections.

Texture and pattern are essential to my work. I incorporate traditional Indonesian techniques, such as Batik—a wax-resist dyeing process—and woodworking, to …

An Overview Of Dermestid Beetles In Forensic Entomology, Annelyn Bateman

Department of Entomology: Distance Master of Science Projects

No abstract provided.

Invasive Forest Pest Education Through Identification, Reporting, And Children’S Introduction Brochures, Lauren E. Keefe

Department of Entomology: Distance Master of Science Projects

Forest pest insects, whether native or non-native, can be extremely detrimental to the health of a landscape, and can contribute to massive ecological, economic, and cultural losses. Unless directly exposed to the damage these pests cause, many people do not seek to become informed on the insects. A series of brochures was thus created as a collaboration between the online UNL M.S. in Entomology requirements and a need for updated Nebraska Forest Service Forest Health brochures. These brochures focus on invasive forest insect identification and reporting, as well as introducing the concepts of the invasives to children.

Five invasive insects …

A Teaching Resource Guidebook: Insect Edition, Autumn Greer

Department of Entomology: Distance Master of Science Projects

Welcome to A Teaching Resource Guidebook: Insect Edition. This book was created with an aim to help educators develop lesson plans for children of all ages. This book contains a list of books and other activities for the developmental understanding of insects, as well as helpful information for you, the educator. This section of the book was designed to help you, the educator, understand the layout of this resource guide and provide you with an example of how to navigate this guidebook.

Exploring The Radical Potential Of Queer Azn And Pasifika Crt For Clinical Social Work Praxis, Antonia R. G. Alvarez, Gita R. Mehrotra, Sameena Azhar, Anne S. J. Farina, Alma M. Ouanesisouk Trinidad

School of Social Work Faculty Publications and Presentations

In the wake of the COVID-19 pandemic, the crisis in Palestine, and the continued rise in hate crimes against Asian American and Pacific Islander (AAPI) communities, clinical social work praxis centering on the intersectional identities of queer and transgender AAPI communities has never been more vital. Through the visioning of an approach that addresses these intersecting identities and our own experiences with racism, cisheterosexism, and transphobia, we propose a theoretical framework, Queer AZN and Pasifika Critical Race Theory (CRT), for clinical social work praxis. Specifically, we describe six tenets of a Queer AZN and Pasifika CRT approach, which include (1) …

Society Of Tennessee Archivists Annual Meeting Program, 2024, Society Of Tennessee Archivists, Carolyn Runyon, Melissa Barker, Carol Roberts, Brigitte Billeaudeaux, Lori Lockhart, Noah Lasley, Sarah Coffman

Society of Tennessee Archivists Annual Meeting programs

Program of the Annual Meeting of the Society of Tennessee Archivists held in Chattanooga, Tennessee on 2024 October 14-15.

Customers Choice Towards Aftersales Serviceability Of Counterfeit Spare Parts A Case Study, Syahrul Nizam Samsudin, Bulan Abdullah, Noriah Yusoff

Malaysian Journal of Computing (MJoC)

A case study was conducted to examine Malaysian perceptions of product origin in connection to counterfeit components of Perusahaan Otomobil Nasional Sdn Bhd (PROTON). Some consumers regard the price of spare parts at service centres as costly, while others find it affordable. This view is formed based on individuals' prior experience with original equipment manufacturer (OEM) components and the imitation parts found at non-certified service centres. The study evaluates the customers’ perception levels and the correlations of customer choice characteristics (CCC) with country of origin (COO) image towards countries that produce counterfeit spare parts, such as China, Taiwan, and Thailand. …

Technology Readiness Level Advancing Locally Made Unmanned Vehicles, Azlin Abd Jamil, Mohd. Adib Sarijari, Rozeha A. Rashid, Jaysuman Pusppanathan, Kamarulafizam Ismail, Mohd Shahir Shamsir

Malaysian Journal of Computing (MJoC)

Effective technology commercialization is critical for successful product delivery in the current environment of intense innovation competition. Although market acceptance is a crucial factor in the commercialization process, it is equally imperative to attain the suitable Technology Readiness Level (TRL). Given a lack of research on TRL of locally produced unmanned vehicles, this study aims to address the gap by proposing a comprehensive framework for the TRL of its locally developed products. To construct this framework, the research employed a qualitative approach via two rounds of Semi-Structured Interviews (SSI) and the Delphi Method. The interviews engaged expert inventors in evaluating …

A New Framework For Deploying Virtual Desktop Infrastructure Using Containerization Approach, Nukman Samsuddin, Mohamad Yusof Darus, Muhammad Azizi Mohd Ariffin

Malaysian Journal of Computing (MJoC)

The COVID-19 pandemic accelerated the shift to virtual learning, pushing educational institutions to adopt innovative solutions like Virtual Desktop Infrastructure (VDI). However, traditional VDI faces performance issues due to resource limitations. This research aims to enhance VDI performance and scalability by proposing a new framework based on containerization to address performance degradation issues such as unutilized CPU and memory usage in VDI. Four key performance metrics—CPU performance, memory performance, boot time, and latency—were evaluated. This research employed a qualitative method involving five phases: problem identification, planning, design and development, testing, and result analysis. The results show that the proposed containerization …

Methodological Concerns In Developing Malaysian Adolescent's Profile On Mental Health, Hairulliza Mohamad Judi, Hazura Mohamed

Malaysian Journal of Computing (MJoC)

Adolescence is a crucial period for mental and social development, and the profile of Malaysian adolescents in terms of their mental health has significant implications for their education and social outcomes. Mental health issues such as anxiety, depression, and stress are prevalent among Malaysian adolescents; and these issues can negatively impact their academic performance and overall well-being. Poor mental health may influence social interactions and relationships, which can impact their ability to form healthy friendships and family relationships, communicate effectively, and function in society. The development of mental health profile of Malaysian adolescents is critical to their success in education …

Process Simulator For Manual Handling Pesticide Packaging Assembly Line, Siti Norhazlinda Roslan, Bulan Abdullah, Nor Hayati Saad, Razali Hassan, Siti Khadijah Alias

Malaysian Journal of Computing (MJoC)

Reducing production costs without sacrificing product quality is essential for the global market survival. The problem of line balancing, especially assembly line balancing, plays an important role for industry in achieving the highest quality and lowest cost. This project presents the simulation of line balancing the pesticide packaging assembly line in pesticidebased company. This study aims to develop a productive and effective way of assembling the product to meet customer demands. Line balancing is about arranging a production line so that the production flow from one workstation to the next is even. Line balancing also provides a successful tool to …

Event Planner Contractor Selection Based On Consistent Fuzzy Linguistic Preference Relations Method, Noratika Nordin, Daud Mohamad

Malaysian Journal of Computing (MJoC)

Event planning, handled by the event planner, involves organizing and coordinating events. The growing number of event planning companies has created a competitive environment where all strive to be the top choice for event managers. Ranking event planners can be subjective, as it depends on specific event requirements. Therefore, it is a crucial stage in selecting the best event planner since many criteria need to be considered. This study aims to identify event planner contractors and rank the alternatives by applying Consistent Fuzzy Linguistic Preference Relations (CFLPR). CFLPR is chosen because it reduces the number of comparisons, streamlines the process, …

Design And Fabrication Of Iot Smart Farm, Hazim Sharudin, Ab Aziz Mohd Yusof, Haszeme Abu Kasim, Noor Hafiz Noordin, Aiman Muqhriz Usuloudin

Malaysian Journal of Computing (MJoC)

This project will help farmers stay connected with their farm from anywhere. It can help to observe the temperature, humidity, and potential of hydrogen (pH) in the land. Most farmers will have difficulty keeping watch on the farm when traveling far away for work. The constant hot weather in Malaysia supports this. So, this project aims to design and fabricate an automatic plant watering system that helps farmers keep the farm in check at any place and time. The project will use a few sensors such as a temperature, pH, and soil humidity sensor to get the information needed and …

Drowsy Driver Detection System Via Facial Recognition And Driving Data, Nur Iman Kamila Azharudin, Hafizah Mansor, Shaila Sharmin

Malaysian Journal of Computing (MJoC)

According to the National Highway Traffic Safety Administration, an estimated 17.6% of all fatal crashes in the years 2017–2021 involved a drowsy driver. This study proposes a drowsy driver detection system that uses both facial recognition and vehicular data to detect if a driver is feeling sleepy behind the wheel. We aim to address a lack of works in the literature that combine data measured from the driver (image or biological data) and vehicular data for drowsy driver detection. Our primary data was collected from simulated driving sessions in which a camera was used to record test drivers’ faces while …

Decision Tree And Rule Based Classification For Predicting Online Purchase Behavior In Malaysia, Maslina Abdul Aziz, Nurul Ain Mustakim, Shuzlina Abdul Rahman

Malaysian Journal of Computing (MJoC)

In Malaysia, fast growth in e-commerce speeds a business need to understand and predict consumer online behavior in order to be more competitive. While the whole world is embracing big data analytics, many businesses in Malaysia, particularly those in the ecommerce sector, find it hard to harness these technologies to their benefit. The absence of specific predictive models and the complexity of socio-cultural diversity further complicate the efforts toward understanding consumer preferences. Therefore, this research tries to fill in some of the gaps by applying decision tree and rule-based algorithms to classify online purchasing behavior amongst Malaysian consumers. The study …

Prediction Of Diabetic Retinopathy Among Diabetic Neuropathy In T2dm Patients Using Data Mining Algorithm, Nur Balqis Oon, Zuraida Khairudin, Hezlin Aryani Abd Rahman, Norbaizura Kamarudin, Nur Syamimi Haji Abu Bakar, Nor Azimah Abd Aziz

Malaysian Journal of Computing (MJoC)

Diabetic retinopathy (DR) and diabetic neuropathy (DN) are the most common complications among diabetes mellitus (DM) patients. Despite the widespread awareness, the implications of these serious diabetes complications remain poorly understood. Hence, this study aims to determine the association between DR and DN, predict DR and identify the significant risk factors associated with DR among DN patients based on the best predictive model obtained. Three models are employed in this study; Logistic Regression (LR) (Forward, Backward, Enter and Optimize), Decision Tree (Information Gain, Gini Index and Gain Ratio) and Artificial Neural Network with a splitting of 70-30. This study involved …