Digital Commons Network^™

Recycling Ndfeb Magnets I: Production Of Ree Fluorides By A Novel Lpc Process, Isaac Joseph Cobbinah

Graduate Theses & Non-Theses

Neodymium-iron-boron (NdFeB) magnets account for over 60% of global magnet sales and are widely used in high-tech, military, and clean-energy applications (Ormerod, 2022). However, they contain critical rare earth elements such as Nd, Pr, and Dy which poses supply chain and geopolitical risks for country like the United States, which rely extensively on foreign sources. Recycling end-of-life NdFeB magnets provides a sustainable solution that diminishes environmental impact, strengthens supply security, and supports stable domestic production of important rare earth elements. A three-stage process has been developed for recycling the REE-content of NdFeB magnets. While the focus is on neodymium (Nd), …

Labram Ii Power Equation And Application To Model A Powder System, Layton Bertrand Bahnmiller

Graduate Theses & Non-Theses

This thesis validates equations that predict power input with machine data for the LabRAM II resonant acoustic mixer (RAM), an industrial tool for mixing powders used in advanced manufacturing and other applications. While RAM offers unique advantages such as gentle mixing and adaptability for sensitive or heterogeneous blends, the manufacturer’s power equation lacked published experimental validation. To address this gap, a custom constantvolume calorimeter was designed to directly measure the energy imparted during RAM operation under controlled conditions. Finite element analysis and analytical heat transfer models ensured calorimeter assumptions were valid. Calorimetric experiments revealed that the vendor’s power input equation …

Aqueous Geochemistry Drives Microbial Cu, Fe, And Zn Uptake Rates In Yellowstone, A Continental Hydrothermal System, Eva Carolina Andrade-Barahona

Graduate Theses & Non-Theses

Microbial uptake of trace metal cofactors such as copper (Cu), iron (Fe), and zinc (Zn) is governed by biogeochemical processes in hydrothermal systems where metal bioavailability varies widely. In situ microbial metal uptake rates were quantified by applying metal stable isotope probing (MSIP) in the Yellowstone hydrothermal system across diverse geochemical conditions in hydrothermal springs. The findings in these studies revealed that pH exerts a dominant influence on microbial copper uptake rate, also enhanced by increased Cu²⁺ ion availability and dissolved oxygen. Microbial iron uptake, in contrast, displayed a broad tolerance to environmental variability, occurring across a pH range of …

Growth Of Porang (Amorphopallus Muelleri) Seedlings As Influenced By Seed Maturity And The Presence Of Sarcotesta, Indri Fariroh, Restiani Sih Harsanti, Aminatun Nisa, Didik Pudji Restanto, Rizky Anugerah Putra

Jurnal Kultivasi

Porang seed maturity based its position on spadix position significantly impacts germination. The presence of the seed coat (sarcotesta) also influenced germination and initial seedling growth. This study aimed to explore the effect of seed maturity and the presence of sarcotesta to the seedling growth. The experiment was conducted from January to June 2023. A two factor Randomized Complete Block Design was employed, examining three maturity levels based on spadix position (physiological maturity seed from the tip spadix (red colour), half physiological maturity seed from the middle spadix (orange colour), and immature seed from the base spadix (green colour)), and …

Factors Influencing The Re-Emergence Of Vaccine-Preventable Diseases Using The Social Ecological Model: A Scoping Review, Glenda Dorina Rodriguez Lenarduzzi

Master's Projects and Capstones

Abstract

Background.

Several factors contribute to the resurgence of vaccine-preventable diseases, affecting coverage rates and vaccine uptake during recent outbreaks. The pandemic has underscored how crucial it is to comprehend vaccine literacy, as this understanding influences people's perspectives and behaviors toward vaccination, particularly in their approaches to problem-solving and decision-making.

Objective.

The present study conducts a scoping review of research on the impact of vaccine literacy and vaccine uptake on the re-emergence of vaccine-preventable diseases in the United States, framed by the social ecological model (SEM).

Design.

PubMed and Google Scholar were utilized as online databases to identify papers published …

Texas Black Maternal Mortality Crisis: A Spotlight On The Texas Legislature’S Alternatives To Abortion Program, Camille Tealer-Misage

The Scholar: St. Mary's Law Review on Race and Social Justice

Texas leads the nation in maternal mortality and morbidity which intersects with high uninsured rates, abortion bans, and legislative policies promoting medical misinformation. Texas’ legislatively codified Alternatives to Abortion Program allocates tens of millions of dollars per year to crisis pregnancy centers and non-profits with the goal of deterring women from seeking abortions. These clinics do not have to hire medical professionals or obtain licensing for the pregnancy-related services provided to clients. Crisis pregnancy centers do not have to provide accurate medical information or social services to the thousands of people who seek care in a state with increasingly limited …

The Evil Historical Twin: How The Requirement Of A Historical Analogy Could Result In Further Discrimination In The Law, Bryanna Mall

The Scholar: St. Mary's Law Review on Race and Social Justice

In 2024, the Supreme Court decided the case of United States v. Rahimi. The Court, unpersuaded by Rahimi’s objection regarding federal law which prohibited an individual subject to a domestic violence restraining order from possessing a firearm, decided the restriction was constitutional. While the holding of this case represents a win for survivors of domestic violence, the legal reasoning plants itself of flimsy concepts of history. The Court utilized a historical analysis test and looked to precedent rooted in social customs, legislation, and court holdings. The first major issue of this test is the dueling interpretation between a historical …

Loneliness And Support For Political Violence Within The United States, Kellen Downey

Political Science Student Papers and Posters

Although loneliness is a growing public health issue in the United States, its political effects remain understudied. This paper seeks to understand the relationship between loneliness and the support of political violence by utilizing the Chapman Survey of American Fears (CSAF Wave 11). This survey, which is a component of the 2025 Chapman Survey of American Fears, includes the three-item UCLA Loneliness Scale, as well as two separate items specifically measuring political violence. Using a national survey (N=1,015), I address the following questions: (1) Are lonely individuals more likely to support violence on political grounds? (2) Does strongly identifying with …

Drinking Water Treatment Using Microbial Cellulose Membranes, Benjamin Schreiber

Graduate Theses & Non-Theses

Access to clean drinking water is a global concern. Existing water filtration technologies require high energy and chemical inputs. They generate a large volume of waste and are not always readily available. This limitation has given rise to the development of sustainable water filtration technologies. This study focused on developing a biodegradable Microbial Cellulose Membrane (MCM) made of bacterial cellulose that is capable of treating a wide variety of pollutants present in environmental water sources. To improve MCM properties for high flux and contaminants removal, they were pre-treated with NaOH (0.25 M). The effect of transmembrane pressure and membrane thickness …

Process Intensification For Rare Earth Elements Adsorption By Resonant Vibratory Mixing (Rvm), Mehran Saddat

Graduate Theses & Non-Theses

Rare earth elements (REE) are crucial to the advancement of modern technologies. REE applications include electronics, defense systems, wind turbines, catalysts, magnets, and aircraft. Bastnasite, monazite, and xenotime are the primary resources, while the secondary resources, including coal ash, E-waste, and acid mine drainage, are for REE extraction. The primary processing techniques are chemical leaching, ion exchange, chemical precipitation, pyrometallurgy, solvent exchange, biosorption, and adsorption. Adsorption technique is simple, cost-effective, and environmentally friendly, with higher efficiency but at the cost of a longer mixing time. Therefore, there is a pressing need for an optimized mixing technique to improve the adsorption …

RutopíA, Shivani Glynn, Emma Hardie

Miller Center Fellowship

To maximize the benefits of ecotourism and ensure its impacts are positive and sustainable over the long term, it is essential to have tools that accurately and transparently measure and evaluate these impacts. To maximize the benefits of ecotourism and ensure its impacts are positive and sustainable over the long term, it is essential to have tools that accurately and transparently measure and evaluate these impacts. Rutopía, a sustainable ecotourism company based in Mexico City, has developed an “Impact Score” tool intended to assess the social, environmental, and cultural effects of its community-based tourism experiences. During our time working onsite …

Misconceptions About Nursing In High School Students Of Color: Promoting Diversity In Nursing, Veronnica D. Pham

Doctor of Nursing Practice (DNP) Projects

Background: Equitable and culturally competent care can reduce health disparities among underserved populations; yet the nursing shortage the US faces does not allow for better patient outcomes. One barrier is how the profession can be negatively viewed among high school students of color.

Methods: A comprehensive literature search was performed to identify how perception of nursing affects a student’s career choice and what influences these perspectives. Three databases were utilized for this search: The Cumulative Index to Nursing and Allied Health Literature (CINAHL), PubMed, and Scopus. Six articles were selected for this review. The following themes have been identified: misconceptions, …

Love Culture, R. J. Mcdonald Jr.

Undergraduate B.F.A. Theses in Studio Art

No abstract provided.

The Writing On The Wall, Haley Chiles

Undergraduate B.F.A. Theses in Studio Art

No abstract provided.

The Parables Of Gammalot, Celique Williams

Undergraduate B.F.A. Theses in Studio Art

No abstract provided.

Subculture And Identity As An Escape From The Societal Norms Of Power Imbalance And Authoritative Abuse, Sarah Goldberg

Master's Theses

By definition, a “bolthole” is an animal’s escape or burrow; or, a person’s escape or place of refuge. It also connotes construction, building, even sculpture - relating proletarian materials to themes of working-class labor and the need for escape. Through sculpture, installation, drawing, and oil painting, Bolthole as a body of work examines power imbalance as a societal norm, and identity and subculture as a rejection of the influence of capitalist institutions. Animal symbolism is used in combination with figurative work and portraiture, directly comparing power imbalances between humans to those in nature; such as predator and prey, parent and …

Reflect: Glmc Building On 10-Years Of Global Leadership Mentoring Experience, Ellen B. Buckner, Tanya F. Lott, Brenda Owusu, Karen Morin, Khalilah M. Mccants

Biennial Convention (CONV)

Introduction: Sigma members reflect a caring culture to show desired change. Following Sigma’s initiation of Global Regions in 2011, a group of visionary Sigma leaders established the Global Leadership Mentoring Community (GLMC).¹

Purpose: The GLMC mentor-mentee relationships broaden nurses ability to reflect on personal and professional leadership growth. The vision of the GLMC is through successful mentoring, participants will enhance their confidence in their global nursing leadership, gaining greater cultural awareness of the issues challenging professional nursing and be personally enriched. This unique mentoring opportunity has demonstrated that global leadership mentoring can strengthen nurses in all settings and help …

Cv: Vesna Markovic (Criminal Justice), Vesna Markovic

Justice, Law, and Public Safety Studies Department Faculty Curricula Vitae

No abstract provided.

Showcasing Student Artwork In An Academic Library, Holly Gabriel, Jan Juliani

Collaborative Librarianship

In this paper, the collaborative efforts of a Government Documents Librarian, an Art Librarian, and an Emerging Media and Digital Arts Professor at a regional public university with a liberal arts focus are detailed. The collaborative project began as a way to celebrate the 70th anniversary of the university library's membership in the Federal Library Depository Program. The authors asked students in a graphic design class to each create a poster featuring a randomly assigned government agency to display in the library as part of the anniversary celebration. The professor and librarians framed the poster project as a real-world design …

How To Describe A Massacre? A Collaborative Metadata Justice Project, Bailey Hoffner, Eugene Albin, Jennifer Watson, Jay Shorten, Jacquelyn Slater Reese, Todd Fuller, Karie Antell

Collaborative Librarianship

Throughout the summer of 2020 and into the following fall, a cross-unit working group at the University of Oklahoma Libraries (OU Libraries) collaborated to compile and submit a proposal to change the Library of Congress Subject Heading (LCSH) Tulsa Race Riot, Tulsa, Okla., 1921 to Tulsa Race Massacre, Tulsa, Okla., 1921. The working group members situated this project in the context of the metadata justice movement, which seeks to correct problematic descriptions. They also see this proposal as part of the broader work undertaken over many decades by Tulsa activists and community leaders. This successful proposal required working group …

Ud In The News Dec. 6-12, University Of Dayton

News Releases

Faculty contributed expertise to The Academic Minute, The National Desk, Catholic World Report and Democracy Without Borders. Local media highlighted UD's graduation, Nativities exhibit, and initiatives to strengthen student success and well-being.

A Rodent Model Of Enhanced Anticipation Of Positive Events: Sex-Specific Modifications In Cognitive Bias And Emotional Resilience, Sarah C. Hartvigsen, Megan Hooper, Olivia Harding, Evelyn Barringer, Aditya Narayanan, Brendan Crockett, Yulia Shatalov, Paean Luby, Braden Wixted, Molly Kent, Kelly Lambert

Psychology Faculty Publications

While it is known that chronic unpredictable stress and negative events adversely affect neurobiological outcomes, much less is known regarding the neurobiological impact of positive emotions such as chronic anticipation of appetitive events. From a translational perspective, an enhanced understanding of the impact of extended exposure to positive emotions may provide novel insights into effective non-pharmacological, behavior-based approaches to enhance mental resilience. Here, we investigate a novel rodent model of chronic Unpredictable Positive Event Response (UPER) training in male and female Long Evans rats to examine behavioral, neural, and endocrine effects of enhanced anticipation of positive events. Rats were exposed …

Jmu Libraries Magazine: Volume 3, Jenne M. Klotz, Emily D. Blake, Kristen S. Shuyler

Faculty Scholarship

Volume 3 of the biennial JMU Libraries magazine, highlighting services, events, awards of the JMU Libraries.

The Diamond, December 12, 2025, Dordt University

Dordt Diamond

• Front Page: Dordt TPUSA Chapter Stuck in Approval Process; The Future of Christian Colleges in Light of Trinity's Closure; Hoyt Reinalda - A Life of Dedication and Improbability
• Feature: "Rivers in the Desert" - Dordt Student Releases Creation Care Podcast; The Dordt Barber Boom - Student Hair Cuts Surge; Dordt Places Second in Esteemed National Finance Competition; The Church and the Crescent - Understanding Islam; Student Visas - How Proposed Legislation May Affect International Students at Dordt; The Word Became Flesh - Music Department Presents "Historic" Choral Christmas Concert
• News: Celebrating the Retirement of Librarian Tricia Kok; …

Media Disparity? Analyzing The Media Coverage Of Violent Vs. Non-Violent Crimes In Central Arkansas, Alicia Dorn

Theses and Dissertations

The media's disproportionate coverage of violent crimes compared to non-violent crimes may create a skewed public perception of crime rates and safety in Central Arkansas, potentially influencing policy decisions and community relations. This research examines whether news outlets in Central Arkansas cover violent crimes more frequently than non-violent crimes and compares this coverage to actual crime statistics from law enforcement agencies. The study aims to understand the potential impact of media representation on public perception of crime. The study employed a mixed-methods content analysis of three major Central Arkansas newspapers (Arkansas Democrat-Gazette, Pine Bluff Commercial, and Hot Springs Sentinel Record) …

Trust, Influence, And The Two-Step Flow Of Communication: How Msu Jmc Freshmen Navigate Information Networks In The Digital Age, Caroline Blakeman

Honors College Theses

This study examines how Murray State University students in the Journalism and Mass Communications department engage with information and interpersonal trust through the lens of the Two-Step Flow of Communication. Using a quantitative survey, participants reported how they receive and evaluate information across six domains: politics, healthcare, education, international conflict, religion, and campus news. The survey also explored participants’ own perceptions as “opinion leaders” within their social networks. Findings reveal that coworkers, family members, and religious associates were consistently rated as high-trust sources of information. In particular, trust in religious associates showed a notable pattern: participants who expressed higher levels …

Spec Ops Tools Point Of Sale (Pos) Data Insights, Liam Mcgovern

Business Analytics Student Projects and Publications

No abstract provided.

Space Utilization Optimization, Troy D. Rockwood

Theses and Dissertations

Outer space is a crucial and increasingly leveraged resource for advancing human quality of life; however, its utility is constrained by inherent physical and spectral limitations. This thesis examines two distinct resource optimization problems critical to the sustainable development of space. The first part of this work addresses the optimization of physical orbital space. Unlike a terrestrial resource, mismanagement of this orbital space can lead to a runaway cascade of collisions, destroying the utility of entire orbital regimes. This thesis proposes a conjunction metric to quantify orbital capacity based on Keplerian parameters. We develop a computational tool to measure and …

The Adverse Digital Childhood Experiences (Adces) Framework: A Transformative Paradigm For Decoding Digital Adversity And Safeguarding Human Agency In Child Development And Lifespan Trajectories, Asrat G. Amnie

Publications and Research

Childhood is no longer confined to physical spaces; It increasingly unfolds within digitally saturated environments where algorithmically mediated technologies shape attention, learning, and identity formation from the earliest years. Traditional adversity frameworks, particularly the Adverse Childhood Experiences (ACEs) model, do not capture the distinctive, persistent, and often invisible risks of digital life. To address this gap, this study advances the Adverse Digital Childhood Experiences (ADCEs) framework, an empirically informed and theory-driven extension of ACEs that systematizes ten interrelated domains of digital adversity encompassing social, cognitive, and environmental stressors. These include cyberbullying and exploitation, commercial surveillance and privacy harms, technoference and …

Rekonstruksi Mekanisme Seleksi Hakim Konstitusi Di Indonesia, Indah Sri Pangestu, Dwi Yuliani, Hertaty Dorothy Dewi Siburian

Jurnal Konstitusi & Demokrasi

The mechanism for selection and election of constitutional judges in Indonesia currently still shows a diversity of procedures in each proposing institution, namely the Supreme Court, DPR and President. The process implemented does not fully reflect the principles of transparency, participation, objectivity and accountability as mandated in the Law on the Constitutional Court. Therefore, it is necessary to standardize the procedures for selection and selection of constitutional judges to ensure a more professional system and integrity. One of the solutions offered is the establishment of an independent institution responsible for the selection and recruitment of constitutional judges with a system …