Digital Commons Network^™

Carbon Fiber Cv Tripod Axle Design: Husker Motorsports Formula Sae, Taylor D. Boudreaux

Honors Program: Senior Projects (Public)

The 2024–2025 HMS Formula SAE senior design team successfully reduced axle system weight, cost, and improved manufacturability using a bonded tripod joint and ±45° intermediate modulus carbon fiber tube. The final design was validated on HMS 25, with no failures under rigorous testing.

Budget:
/="/"> Total project cost was $1,165.64, exceeding the initial $1,000 target due to unanticipated test rig expenses. However, per-axle production cost was reduced from $525.31 to $383.37 through in-house manufacturing, use of on-hand epoxy (DP460), and switching to cost-effective 7068 aluminum. The axle-specific cost was $766.74.

Timeline:
/="/"> Despite early delays from building a torsional testing …

A Case Study On Readiness Of Engineers In Agricultural Technology Start-Ups, Katie Marie Mowat

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

This dissertation explores the perceptions of practicing engineers regarding the skills necessary to be workforce-ready at agricultural technology (ag-tech) start-ups in the Midwestern United States. A qualitative case study methodology is leveraged, combining both interview and job description data. Given their uniqueness, the study divides the ag-tech start-up industry into two subcases: livestock and cropping systems. The Work Readiness Integrated Competence Model (WRICM) is used as the theoretical framework for this study and informs the conceptual framework and analysis processes. The study identified skills that fit into thirteen distinct categories, which are further grouped into four overarching resource groups. Skills …

Optimizing Nitrogen Management: Assessing Nitrate Transport In The Deep Vadose Zone And Its Impact On Groundwater Quality In East-Central Nebraska, Muili O. Lawal

Department of Agricultural and Biological Systems Engineering: Dissertations, Theses, and Student Research

Groundwater contamination by nitrate (NO₃-N) is a growing environmental and public health concern driven largely by intensive agricultural fertilizer applications. The vadose zone plays an important role in NO₃-N transport, influencing groundwater quality and agricultural sustainability. This study investigated NO₃-N leaching dynamics in the deep vadose zone of Water Quality Sub-Area 30 (WQA30) within the Lower Loup Natural Resources District (LLNRD), northeast of Columbus, Nebraska (mean groundwater NO₃-N: 20.3 mg/L), using soil cores from 16 shallow (to 6.1 m) and four deep (down to 25.9 m) across four zones, two with inorganic fertilizer (Zones 1 and 4) and two with …

Modeling Degradation In Li-Ion Batteries: Analyzing Single-Cell Degradation And Applying It To Customized Pack-Level, Mohannad Y. Alkhalil

Durham School of Architectural Engineering and Construction: Dissertations, Theses, and Student Research

The rapid expansion of lithium-ion (Li-ion) battery applications in areas such as electric vehicles (EVs), renewable energy storage, and portable electronics has drawn attention to the need for improving their performance, safety, and longevity. As Li-ion batteries become essential across technologies, understanding degradation mechanisms is critical for optimizing design and ensuring reliable operation. This work provides a detailed overview of modeling degradation in Li-ion batteries, focusing on single-cell behavior and its implications for pack-level performance.

The PyBaMM (Python Battery Mathematical Modeling) package, an open-source battery simulation tool written in Python, is used for single-cell simulations. Liionpack, another Python-based library, is …

Queered Tradition: Disidentificatory Practices Of Queer-Affirming Religious Space, Amanda R. Peterson

Department of English: Dissertations, Theses, and Student Research

Responding to high rates of religious trauma in the United States, particularly for LGBTQ people, this study investigates the rhetorical moves made in protestant Christian spaces to consider what makes these spaces safe and affirming for queer people. Specifically, I consider the rhetorical impact these churches make through not only their space but also their liturgy and online presence, which informs the embodied experience of the space.

Through autoethnographic research, I look at three local churches—Metropolitan Community Church of Omaha, Urban Abbey, and Elevate Church–the first two queer-affirming and the third conservative. Findings show the various church elements negotiated with …

Investigating Students’ Proficiency Across Statistical Software And Preferences Of Statistical Software Design, Sabrina White

Honors College Theses

This paper investigated students’ perceptions of their proficiency with statistical software applications and their preferences regarding software features. Results indicated that students’ statistical and coding experience, as well as the specific application used, did not significantly influence their self-perceived proficiency. This suggests that it may be more effective to focus on building student skills within a chosen application, rather than tailoring the application to match existing student capabilities. While students showed clear preferences for certain features, favoring clarity over depth, flexibility over safeguards, and built-in checks over unrestricted freedom, these preferences generally leaned toward balanced design rather than extremes. This …

Simulations Of Magnetar Spin-Down Lifetimes Using Magnetic Braking Models, Sophie Wessel

Honors College Theses

The beginnings of magnetar lifetimes are not very well understood. It is important to improve our understanding of magnetar origins in order to investigate possible evolutionary connections to other classes of NS, such as X-ray dim isolated NSs (XDINSs). Here we follow in the steps of another paper1 in modeling the spin evolution of magnetars, utilizing two avenues of evolution: one involving exponential B-field decay, and the other involving suband super-exponential B-field decay. We replicate the results of the paper, utilizing Monte Carlo methods to generate and evolve synthetic populations of magnetars, which are then compared to the current known …

Integration Of Interprofessional Education Into Routine Resident Practice: 2 Cases Of Successful Implementation., Catherine C Skae, Victoria Gorski, Anna Flattau, Manaslu Gurung, Kalli Varaklis, Sarah Hallen

Department of Family & Community Medicine Faculty Papers

No abstract provided.

Course Insight Portfolio: Math 1060 Calculus Of One Variable I, Julianne Barnhart, Rayna Elizabeth Maleki, Antsa Rakotondrafara

Publications

We presented this Course Insight Portfolio project as a final assignment for the class Teaching Undergraduate Math MATH 9700 in Summer 2025. It covers the Clemson class MATH 1060 Calculus of One Variable I and is a fruit of the collaborative work of Julianne Barnhart, Rayna Maleki, and Antsa Rakotondrafara.

Libraries Facilitating Knowledge Creation Through Podcasting: Exploring Podcasts As A Form Of Scholarship, Annette Bochenek, Sarah Huber, Renusree Varma Mudduluru

Libraries Faculty and Staff Scholarship and Research

Students are increasingly expected to conduct research and scholarship. This paper explores podcast creation as a medium for students to deliver new knowledge and the elements of teaching and learning that support this outcome. Through focus groups, students at a large Midwestern university expressed the importance of contributing to the information landscape. The prospect of their podcasts contributing knowledge to academic communities held more interest to them than creating a podcast for an assignment. This paper addresses how librarians and libraries can support the information literacy standards and technical aspects of students creating new knowledge through a podcast assignment.

A Taste Of Rhetoric: Moves & Practices In The Decolonization & Restoration Of Historic Foodways, Abby A. Laforest

All NMU Master's Theses

Language and rhetoric are foundational influences on cultural practices, including culinary ones. The subdiscipline of food rhetoric studies communication about the processes of eating, cooking, transporting, and trading food, especially within the cultures of historically marginalized peoples. The past decades have seen a profusion of academic food research, but the role of language in understanding food, especially in a multicultural, globalized world, remains understudied. This paper examines how three rhetorical theories foundational to identity formation and layered understandings of meaning – (a) Dr. Karen Barad’s (they/them) theory of posthumanist performativity, (b) Dr. Maurice Charland’s theory of constitutive rhetoric, and (c) …

The Complete Message Is The Best Message: The Case For Standardizing Wireless Emergency Alerts, Jeannette Sutton, Micki Olson, Hugh Walpole, Lauren B. Cain, Nicholas Waugh, Michele M. Wood

Emergency Preparedness, Homeland Security, and Cybersecurity Faculty Scholarship

Standardized messaging for alerts and warnings has been made possible through the use of the Warning Lexicon and workflow. The effectiveness of this approach to motivate protective action behaviors, in comparison with the current standard of practice, has not yet been tested. Using an experimental design to test the effectiveness of the Warning Lexicon, we tested three message types for five hazards: blackouts, law enforcement incidents, infectious diseases, heavy snow, and chemical releases, and found that messages created using the Warning Lexicon contents and workflow produced better messaging outcomes than the current standard of practice. Specifically, participants who received the …

Hdwsa2: A Secure Hierarchical Deterministic Wallet Supporting Stealth Address And Signature Aggregation, Xin Yin, Zhen Liu, Guomin Yang, Guoxing Chen, Haojin Zhu

Research Collection School Of Computing and Information Systems

Hierarchical Deterministic Wallet (HDW) and Stealth Address (SA) are widely used in cryptocurrency communities due to their functionality and security. In the preliminary version of this work (ESORICS 2022), we formally define the syntax and security models of Hierarchical Deterministic Wallet supporting Stealth Address (HDWSA), capturing the functionality and security requirements imposed by the practice in cryptocurrency. We propose a concrete HDWSA construction and prove its security in the random oracle model. Note that when applied in blockchain, in practice, signature aggregation could reduce the cost of computation, storage, and communication dramatically. In this full version, we develop HDWSA definition …

Enhancing Deliberativeness: Evaluating The Impact Of Multimodal Reflection Nudges, Shun Yi Yeo, Zhuoqun Jiang, Anthony Tang, Simon Tangi Perrault

Research Collection School Of Computing and Information Systems

Nudging participants with text-based reflective nudges enhances deliberation quality on online deliberation platforms. The effectiveness of multimodal reflective nudges, however, remains largely unexplored. Given the multi-sensory nature of human perception, incorporating diverse modalities into self-reflection mechanisms has the potential to better support various reflective styles. This paper explores how presenting reflective nudges of different types (direct: persona and indirect: storytelling) in different modalities (text, image, video and audio) affects deliberation quality. We conducted two user studies with 20 and 200 participants respectively. The first study identifies the preferred modality for each type of reflective nudges, revealing that text is most …

Cooperative And Bifunctional Ga-Ca-Cr2o3@Cao Structured Monoliths As Versatile Platform For Reactive Capture Of Co2 And Its Subsequent Conversion To Ethylene, Khaled Baamran, Ali A. Rownaghi

Chemical and Biochemical Engineering Faculty Research & Creative Works

Cooperative and bifunctional materials (BFMs) that integrate adsorbents and catalysts offer a promising strategy for the reactive capture of CO₂ to produce valuable fuels and chemicals. In this study, we developed structured BFMs via 3D printing that combine CaO as an adsorbent with Ga–Ca–Cr₂O₃ metal oxides as the catalyst for the reactive capture of CO₂ and its subsequent conversion to C₂H₄ via the oxidative dehydrogenation of C₂H₆ (CO₂-ODHE). Three different Ga–Ca compositions were used to modify the catalyst surface characteristics and enhance C₂H₄ selectivity. …

Influence Of Terrain Model Resolution On Rockfall Dispersion And Tortuosity Of Rockfall Paths, Lucas Jason Arsenith

Boise State University Theses and Dissertations

The geology of the Snake River Plain region of southwestern Idaho contains terraces formed from downcutting of the Boise River and columnar jointed basalt cliffs from lava flows. Within the city limits of Boise, Idaho, rockfall events originate from these columnar jointed basalt cliffs. Whitney Terrace, a rockfall-prone location in southwestern Boise, was chosen as the study site. Site-specific LiDAR data was used to create a bare earth terrain model, and rockfall boulders were geolocated and measured to be used as inputs into rockfall models. The slope below the cliff face was divided into four distinct slope zones, each with …

Circularity Within Service-Dominant Logic: The Role Of Perceived Ethics On Co-Creation In Sharing Economy Platforms, Saifeddin Alimamy, Waqar Nadeem

All Works

This study investigates circularity in service-dominant (SD) logic within sharing economy platforms (SEPs), focusing on how perceived ethics influence customer co-creation and commitment. It further explores the mediating roles of trust and reciprocity and the moderating effect of brand identification. Data from 365 SEP users were analyzed via partial least squares structural equation modeling (PLS-SEM). Results demonstrate that perceived ethics positively affect trust and reciprocity, which subsequently strengthen customers' willingness to co-create. Trust and reciprocity emerged as pivotal mediators, while brand identification significantly moderated their effects on co-creation. By emphasizing the role of ethical perceptions in fostering trust-based collaboration and …

Teaching Gender Equality: Shifting The Focus From Aspiration To Practice, Rawia Ahmed, M. Fernanda Garcia, Imran Taj, Laila Al Reqabi

All Works

Purpose: This study aims to inform management educators and students about how to identify, analyze, and sustain gender equality as a business practice in organizational settings. Design, Methodology, and Approach: Guided by practice theory and social learning theory we: a) offer a theoretical framework to help students recognize gender equality practices in real-world contexts, and b) provide educators with an applied example and pedagogical tool for teaching students how to identify and analyze gender equality practices in written and audio texts. We draw from two theoretical templates to analyze excerpts related to gender equality practices taken from an interview with …

Gene Mutation And Chemotherapy Response In Azoxymethane Induced Colorectal Tumors, Maya M. Vance

Biomedical Engineering Undergraduate Honors Theses

Colorectal cancer research is a field of increasing importance as disease prevalence continues to increase over time. In looking at the origin of the disease, a driver gene known as p53 is of particular interest for its role in the stimulation of the mutated Wnt pathway. Developing as a missense-type mutation, this gene that ordinarily functions as a tumor suppressor is investigated as a gene of interest for tumor development. In this study, a mouse model was used to examine the development of colorectal cancer with a total of n=34 samples, including n=9 tumors and n=25 colons. The concentration of …

Optimizing The Effects Of Yoda1 And Assessing The Effects Of Mrna Silencing Of Piezo1 Gene In Mesenchymal Stem Cells, Addison R. Mclaughlin

Biomedical Engineering Undergraduate Honors Theses

Mesenchymal stem cells (MSCs) are multipotent adult stem cells that are capable of differentiating into various skeletal tissues, making them promising candidates for regenerative medicine. A critical factor influencing their differentiation potential is mechanosensitivity, the ability to respond to mechanical stimuli. The mechanosensitive calcium ion channel PIEZO1 has emerged as a key regulator in this process, particularly in osteogenic differentiation. This study investigated the role of PIEZO1 in MSC osteogenesis through pharmacological activation using YODA1 and gene silencing via siRNA. Human bone marrow-derived MSCs were cultured and induced for osteogenic differentiation under varying concentrations and durations of YODA1 treatment. Alizarin …

Fabrication And In Vitro Biocompatibility Assessment Of Composite-Coated Magnesium Materials, Bryce Williams

Biomedical Engineering Undergraduate Honors Theses

This study provides a comparative assessment of the corrosion, morphology, and biological properties of four of the most promising coating methods for magnesium in biomedical applications, namely micro-arc oxidation (MAO), graphene oxide (GO)-containing MAO coating, MAO/sol-gel composite coating, and MAO/polycaprolactone (PCL) polymer dip coating approaches. Despite the abundance of research focused on these promising approaches, there is a notable lack of comparative studies evaluating their properties. To this end, the investigated composite coatings are ZK60+MAO, ZK60+MAO/GO, ZK60+MAO/Sol-gel, and ZK60+MAO/PCL composite coating. Several tests were used to assess various properties of the prepared groups such as in vitro corrosion characteristics, surface …

Insert Creation To Mimic Blood Vessels In Gel Phantoms, Courtney Bloom

Biomedical Engineering Undergraduate Honors Theses

Gel phantoms are commonly used in research settings due to their ability to mimic soft tissue. Creating these phantoms usually involves 3D printing an insert, embedding it in gel, and then washing the insert out. Polyvinyl alcohol (PVA) is typically used as the insert material, but it often swells and deforms the gel during the washout process. Aquapour, a water-soluble material, was investigated as a potential replacement for PVA. Unlike PVA, Aquapour comes in a powdered form that can be mixed with water to create a castable slurry. To create molds to cast Aquapour, SolidWorks was used to design two …

Assessment Of Nitrogen Source Utilization During Nitrogen Fixation And Nitrogenase Regulation By Methanosarcina Acetivorans, Avery Carter

Biological Sciences Undergraduate Honors Theses

Nitrogen is a crucial element in biomolecules such as proteins and DNA, essential for all cellular life. Biological nitrogen fixation, a process utilized by certain bacteria and archaea, reduces dinitrogen (N₂) to ammonia (NH₃), enabling growth in the absence of fixed nitrogen sources like NH₃. This process is driven by the metalloenzyme nitrogenase, which catalyzes the reaction: N₂ + 16ATP + 8e⁻ + 8H⁺ → 2NH₃ + H₂ + 16ADP + 16Pi. Due to its high energy demand, nitrogenase production and activity are tightly regulated. Among archaea, nitrogenase is found exclusively in methanogens, where its regulation remains poorly understood. We …

Environmental And Societal Impacts Of Agricultural Land Abandonment In Indonesia: A Bibliometric Review, Jane A. Landrum

Geosciences Undergraduate Honors Theses

In the past decades, Southeast Asia has faced one of the highest urbanization rates globally, with land conversion, agricultural land abandonment, and deforestation occurring simultaneously. High population growth rates and migration away from rural areas have also led to increased food insecurity, which has increased the need for agricultural production. In Indonesia, high rates of urbanization on the island of Java have historically prompted governmental policy solutions aimed at population redistribution and agricultural extensification (rather than intensification). The cost of this conversion of lands to agriculture often falls on the environment, with peatlands and forested lands being converted to large-scale …

Building Neocolonial Foundations: The British Government And The Decolonization Of The Gold Coast, 1948-1957, Simon H. Michener

History Undergraduate Honors Theses

In this thesis, I examine the ways that the government of Great Britain attempted to create a pro-Western state in Ghana during the decolonization process, which spanned from the Accra Riots in 1948 to the finalization of independence in 1957, with Kwame Nkrumah’s election as president. Since Ghana became the first sub-Saharan African nation to gain its independence, it provides the initial example illustrating how the British government during the decolonization process in sub-Saharan Africa tried to cultivate states that would align with their interests following independence. To achieve this goal, I will rely on primary sources from the British …

Relationship Between Nutritional Knowledge And Eating Disorder Risk Levels, Valeria Fernandez

Human Nutrition and Hospitality Management Undergraduate Honors Theses

The prevalence of disordered eating is a critical public health concern that often progresses towards the development of a diagnosable eating disorder (ED). This, in turn, has detrimental physical and psychological consequences for individuals. Organizations such as the American Society of Parenteral and Enteral Nutrition (ASPEN) and the Academy of Nutrition and Dietetics (AND) have recognized nutrition education as a crucial component of prevention and recovery. Determining the extent to which nutrition knowledge is related to risk factors for EDs is worth investigating due to its implications for healthcare approaches – especially among adolescent and young adult populations. The goal …

Exploring The Status Of Women In Collegiate Sports Leadership Positions: A Qualitative Phenomenological Study, Danielle Tucker

Education Doctoral

Despite an active legislation that mandates impartiality on the basis of sex under any educational program, many schools still have discriminatory policies (Fabrikant, 2018). Many times, the policies benefit the dominance of men as coaches and athletic administrators, which displays an unequal representation on the leadership side of college sports (Belkoff, 2020). The purpose of this transcendental phenomenological study was to explore the status of women in collegiate sports leadership positions within an athletic program in the National Collegiate Athletic Association (NCAA) at the Division I level. Through interviews with six to 10 women who were women executive leaders currently …

Strength Over Specificity: Building The Athlete, Not The Skill In Strength And Conditioning, Jack E R Krueger

Leadership Education Capstones

This mixed-methods study explored how athletes, sport coaches, and strength and conditioning coaches perceive the role of general strength training versus sport-specific training in athletic performance. The research was guided by two questions: (1) To what extent can foundational strength and power gains achieved in the weight room influence sport-specific skills? and (2) How do key stakeholders perceive the benefits of general strength versus sport-specific training in the context of sport performance? Data were collected through an anonymous online survey distributed via the Strength Coach Job Network Discord server, Instagram stories, and word of mouth. The final sample consisted of …

Bullet Ricochet And Tunnelling Of Wood Substrates, Abdelrahman Khalifa

Student Theses

With the overall rise in shooting incidents throughout the country, most notably in urban areas, the capabilities and limitations of current forensic examinations of firearms-related incidents have become more apparent. An underappreciated aspect of shooting incidents is the phenomenon of bullet ricochet, which has led to ricochet-related injuries, with some cases proving fatal. Although there are processes and generally accepted standards for bullet trajectory analysis, ricochet analysis typically requires outside input from firearm examiners. Additionally, current research regarding ricochet on wood surfaces remains less thoroughly investigated than ricochet analysis on other yielding surfaces. The goal of this research was to …

Aspiring Leaders And Future Visions About Leadership Communications, Conner Haggerty, Dylan A. Sawicki, Jared Gerke, John Langan, Kaitlyn Mj Calabrese, Kyle Borske, Mattie Schimenz, Barbara Holmes

Leadership Education Books

The spring 2025 Leadership Education LDRS 615 graduate course student writing project focuses on the leadership communications and the future. Graduate students enrolled in this class chose as a topic: Aspiring Leaders and Future Visions about Leadership Communications. Interest in this topic emerges from discussions regarding the new digital tools and mediums implemented in the 21st century.

Upon completion of the Organizational Leaders program, new leaders will add voice and expertise to creating new visions for the workplaces of tomorrow. These graduate students point out that the future is here and the requirement to send clear communications to others remains …