Digital Commons Network^™

Synergies Of Microecology And Macroecology Elicit Insights For Creation Care, David Warners, John T. Wertz

University Faculty Publications and Creative Works

This article reports on a collection of microecological and macroecological insights that emerged from extended conversations between Calvin University professors David Warners, a botanist concentrating in restoration ecology, and John Wertz, a micro-biologist specializing in microbial ecology. Classic descriptions of ecology identify biological interactions as happening at the ecosystem, community, or population level. And yet, ecological interactions are very much occurring at the microbial level as well. Furthermore, microbial-level interactions frequently influence the quality and character of macroecological relationships and vice versa. Allowing ecological principles to be applied across all life forms broadens our comprehension of interactions that are happening …

Flight To The Margins: Harriet Jacobs And Liminal Fugitivity, Lucy Britt

All Faculty Scholarship

What would it look like to flee oppression and violence if you could not get very far away? Although enslaved people’s fugitivity in the United States is often understood through the story of complete escape, there were many more enslaved people who fled within slave states. This article defines liminal fugitivity as a type of flight in which enslaved people fled to peripheral spaces near sites of enslavement, such as crawl spaces, edges of forests, or borders of towns and plantations. It reads Harriet Jacobs’s Incidents in the Life of a Slave Girl as an illustration of liminal fugitivity. Jacobs …

C*-Extreme Quantum Instruments; Completion And Disintegration Of Completely Positive Maps, Arghya Chongdar

Doctoral Theses

This thesis develops a comprehensive operator-algebraic framework for the study of completely positive (CP) instruments, with contributions spanning convexity theory, integration theory, completion problems, and disintegration theory. We begin by laying the foundational groundwork in the theory of C*-algebras and von Neumann algebras, introducing key structures such as CP maps, positive operator-valued measures (POVMs), and CP instruments, along with their dilation-theoretic properties. Pure and decomposable instruments are characterized via minimal bi-dilations, and CP instruments are realized as bivariate maps, providing a rigorous quantum analogue of classical joint measures. The thesis then investigates convexity-theoretic aspects of instruments. A structural characterization of …

Dopamine-Endocannabinoid Crosstalk Drives Exercise-Induced Bidirectional Plasticity In Parkinson's Disease, Federica Campanelli, Gioia Marino, Giuseppina Natale, Maria De Carluccio, Tabitha N. Rodriguez, Michelle Smeyne, Richard Jay Smeyne, Veronica Ghiglieri, Paolo Calabresi

Department of Neuroscience Faculty Papers

Parkinson’s disease (PD) is a neurodegenerative disorder marked by loss of substantia nigra dopaminergic neurons. Epidemiological evidence indicates that lifelong physical activity reduces both PD incidence and slows disease progression. Here, we examine how voluntary exercise induces long-lasting neuroprotection of the corticostriatal function in a murine model of α-synuclein–driven nigrostriatal pathology. In preformed fibril (PFF)-injected mice, long-lasting voluntary wheel running prevents degeneration of nigrostriatal dopaminergic terminals and improves motor performances. Intensive exercise normalizes spontaneous glutamatergic transmission and preserves corticostriatal long-term potentiation (LTP) in striatal spiny projection neurons. Exercise-induced LTP is dependent on activation of dopamine (DA) DA1, GluN2B-expressing NMDA and …

Irwin, Raymond. The English Library: Sources And History. New York, Ny: Routledge, 2022., Randi K.J. Baltzer

The Christian Librarian

No abstract provided.

An Attachment Perspective For Help-Seeking Intentions Among Emerging Adult Women Child Sexual Abuse Survivors, Dominique Giroux

Dissertations

Child sexual abuse (CSA) is an adverse childhood experience and a global health issue. Approximately one in four girls encounter CSA per year. Research evidence suggests approximately 50% of CSA survivors encounter sexual revictimization during adulthood (Walker & Wamser-Nanney, 2023), but formal help and intervention can mitigate further psychosocial harm experienced by CSA survivors (Widom et al., 2008). Attachment theory has provided a theoretical framework for identifying individuals at risk for revictimization and help-seeking patterns, such that individuals who have insecure attachment styles report more revictimization frequency, but the literature is mixed about attachment styles and help-seeking (Brenner et al., …

Deployment-Aware Deep Learning For Computer Vision: Efficient Architectures From 3d Segmentation To Mixed Reality, Bahar Uddin Mahmud

Dissertations

Deep learning has become the dominant approach for solving vision-centric problems; however, its successful deployment in real-world applications remains limited by high computational cost, data dependency, and insufficient integration with practical and human-centered environments. While state-of-the art deep learning models often achieve impressive performance in controlled settings, they frequently fail to generalize or operate efficiently under deployment constraints such as limited resources, complex data modalities, and real-time interaction requirements. These limitations motivate the need for a deployment-oriented deep learning framework that balances accuracy, efficiency, and practical usability.

This dissertation investigates the design and deployment of efficient deep learning architectures for …

Nanosilica-Enhanced Concrete For Commercial Construction, Pavlik Gribanovsky, Angel Lozano, Sebastian Rico

Civil, Environmental and Sustainable Engineering Senior Theses

Concrete is the most widely used construction material in the world. In consequence, the production of Portland cement contributes significantly to global carbon dioxide emissions. As the construction industry seeks more sustainable materials, nanosilica emerges as a promising material capable of enhancing the performance of concrete which would in turn reduce the demand of cement. This project investigated the feasibility of using laboratory-synthesized nanosilica as a concrete admixture to improve the mechanical performance of self-consolidating concrete. Concrete specimens were prepared in accordance with applicable ACI and ASTM procedures, cast into cylindrical molds, cured, and tested for compressive strength at seven …

Breadquest: Enhancing Roguelike Accessibility Through Procedural Generation And Thematic Design, Hahns Pena

Computer Science and Software Engineering

BreadQuest is a top-down roguelike dungeon crawler with a whimsical dessert theme that aims to make the genre more accessible while preserving strategic depth and replayability. Players explore procedurally generated dungeons, fight pastry-themed enemies, and collect bakery-inspired items that support a flavor-elemental combat system, with each run offering unique layouts, encounters, and rewards. Built in Unity with a modular, data-driven architecture, the game uses procedural generation techniques like Binary Space Partitioning, Voronoi diagrams, and Perlin noise to create varied and replayable levels. The project emphasizes approachable gameplay, cultural dessert inspiration, and replayability, with success evaluated through playtesting and player feedback.

Active Galaxies In A New Light: The Broad Line Region In The Near-Infrared, Sky O'Donnell

Physics

At the center of most massive galaxies, there is a supermassive black hole with a mass millions to billions of times that of the Sun. In some of these galaxies, so-called Active Galactic Nuclei (AGNs), the supermassive black hole is converting the gas that falls toward it into radiation energy, creating large amounts of luminosity. AGNs are composed of the central supermassive black hole, its accretion disk, and a region just outside, composed of fast-moving ionized gas clouds called the Broad Line Region (BLR). Using spectra obtained with NASA’s Infrared Telescope Facility, we use a technique known as reverberation mapping …

Provost’S Scholarly Dissemination Report: Une Authored Publications February 1, 2026, Through May 1, 2026, Une Office Of The Provost

UNE Provost's Reports

Scholarly dissemination report of UNE-authored publications during the period of February 1, 2026, through May 1, 2026. Prepared for the Academic, Student, and Research Affairs Committee Provost’s Report, June 2026.

Enhancing Postsecondary Outcomes For Students With Emotional And Behavioral Disorders: A Design-Based Mixed Methods Approach To Transition Planning, Kate M. Schrum

Dissertations

Students with emotional and behavioral disorders (EBD) experienced significantly lower postsecondary outcomes when compared to same-aged peers. These outcomes included lower graduation rates, higher unemployment rates, and difficulty establishing independent living arrangements (Wagner & Newman, 2015). Following a human-centered, design-based approach, the scholar-practitioner found a lack of consistent and meaningful transition support specifically designed for students with EBD. Working with a stakeholder team of educational professionals directly involved in supporting transition for students with EBD at an alternative special education program, the scholar-practitioner developed a "Transition Toolkit". The toolkit contained scaffolded grade-level checklists (for grades 6–12) with self-advocacy and goal-setting …

Standardizing Tms Intensity Across Different Coils Using Individualized Electric Field Modeling, Evgenii Kim, Mohammad Daneshzand, Keren Zhu, Danyal Fareed Bhutto, Teresa Jacobson Kimberley, Dylan J. Edwards, Netri Pajankar, Parker Kotlarz, Tommi Raij, Sergey N. Makaroff, Aapo Nummenmaa

Moss-Magee Rehabilitation Papers

Quantitative measures for Transcranial Magnetic Stimulation (TMS) intensity are needed to ensure safe and consistent application in therapeutic and research settings. However, resting motor thresholds (rMTs), commonly used to determine stimulation intensity, depend on the coil used. Unless motor mapping and treatment coils are identical, re-thresholding is necessary, increasing patient discomfort and potentially introducing variability across studies. These considerations raise an unresolved fundamental question: does individual rMT reflect a consistent cortical electric field (E-field) magnitude independent of coil geometry? We tested the hypothesis that rMT corresponds to a coil-invariant cortical E-field magnitude and evaluated a computational method for predicting stimulator …

Reimagining The Possible: What True Medical-Dental Integration Would Actually Require, Brett Kessler

Metro Denver Dental Society Articulator Magazine

This article explores the structural, financial and educational barriers preventing true medical-dental integration despite the overwhelming evidence linking oral health to systemic disease. Drawing from clinical experience and current research, Dr. Brett Kessler argues that dentistry must move beyond procedure-based care toward a collaborative, outcomes-driven healthcare model. The article examines reimbursement reform, interoperability between medical and dental records, expanded preventive screening and integrated care delivery systems. It also challenges the dental profession to embrace a broader role in whole-body health and chronic disease prevention.

Still Can’T Kill My Vibe: A Critical Autoethnography Navigating Anti-Blackness As A Student And Teacher—A Black Queer Educator’S Toolkit Towards Joyful Resistance, Mischelle Brown

Social Justice in Educational Leadership EdD Dissertations

This critical autoethnography investigates the intersectional realities of navigating anti- Blackness, systemic racism, and heteronormativity within the American educational landscape. Moving chronologically through the dual lenses of student and teacher, this work unpacks the institutional erasure, surveillance, and microaggressions experienced by Black Queer bodies in academic spaces. Grounded in the theoretical framework of Black Queer Feminism (BQF), this study utilized Epistolary Letter Writing, Education Journey Mapping and Community Cultural Wealth to expose how the education system perpetuates anti-Blackness, white supremacist, heteronormative, patriarchal ideologies. Yet rather than centering trauma as the definitive narrative, this autoethnography elevates the concept of “Joy as …

Beyond High Fives And Yearbook Photos: From Attitudes To Inclusion, Adaptive Leadership, And Relationships In A Unified Champion School, Monique Andrea Paris

Social Justice in Educational Leadership EdD Dissertations

The goal of the Special Olympics Unified Partnership Program is to foster inclusive future leaders and to build social connections between students with and without cognitive or intellectual disabilities within a school community.

Existing research has focused on attitudinal outcomes. This dissertation addresses 3 research questions: (1) How do Unified Partners construct and articulate their understanding of inclusion and belonging for students with disabilities at a Unified Champion School?, (2) How do Unified Partners define their roles within Unified Programs or integrated settings, and maximize the potential of others within the space?, and (3) How do Unified Partners describe their …

Affection-Based Strategies And Their Impact On Latinx Male High School Students, Nohemy Sánchez Ortega

Social Justice in Educational Leadership EdD Dissertations

This qualitative research examined how high school teachers employ affection-based strategies and how male Latinx students perceive and make meaning of these practices within learning environments. Informed by attachment theory, culturally responsive teaching, and rehumanizing education frameworks, this research examines relational practices that foster engagement, a stronger sense of belonging, and academic growth.

Data was collected through research-created semi-structured interviews with high school educators and upperclassmen male Latinx students. Additionally, all participants completed educational journey maps that portrayed their lived educational experiences. The analysis identified four categories of affection-based strategies used by educators: material strategies (e.g., providing resources and tangible …

De Astronomiā: A Comparison Of Kepler’S Epitome Astronomiae Copernicanae And Ancient Astronomical Literature, Jillian Lees Darcy

Classics Undergraduate Senior Theses

My thesis is part translation and part analysis. I chose to translate an early modern astronomical text written in Neo-Latin and analyze this text through ancient writing on astronomy and cosmology. I chose to translate Kepler’s Epitome Astronomiae Copernicanae because of the many ancient allusions he makes in the introduction. While this text is valued for its scientific content and contributions, but I was interested in Kepler’s literary strategies, specifically how he engages in authorial self-fashioning, and how classical strategies of knowledge construction are distorted or mirrored in their style and content.  After my translation, I will analyze Kepler’s literary …

Design And Parametric Testing Of A Transimpedance Amplifier For Low-Power Biomedical Applications, Stanlon Tan, William Chung, Brandon Wu

Electrical Engineering

This project developed and evaluated an optical sensing system for detecting changes associated with glucose concentration. The system combined a laser-diode, cuvette sample holder, photodiode, resistive-feedback transimpedance amplifier, high-resolution analog-to-digital converter, and microcontroller. Parametric testing evaluated the effects of input current and feedback resistance on transimpedance gain, output range, and linearity. Firmware was developed to configure the ADC, average repeated conversions, monitor measurement variation, convert raw digital counts into voltage using a source-meter calibration equation, and compare sample measurements with a water reference. A cuvette enclosure maintained alignment between the laser-diode, sample, and photodiode while reducing external optical interference. Testing …

Simulation Of Silicon Neurons With Memristive Synapses For Ai Accelerators, Marcus Ivey, Kelvin Shi

Electrical Engineering

This project seeks to design and simulate a neuromorphic spiking neural network (SNN) that implements the logical AND and logical OR operation through the interaction of a Leaky Integrate-and-Fire (LIF) output neuron and memristive synapses modeled using the Biolek formulation. Two pulsed inputs are transmitted through memristive devices whose conductance serves as the synaptic weights. A supervised Hebbian training strategy, implemented in MATLAB, is employed to adjust the synaptic conductance according to the Hebbian delta rule. The proposed framework demonstrates how elementary logical computation may arise from biologically motivated learning processes embedded in hardware-realistic neuromorphic circuits. The study provides a …

Wildlife Tracking Via Uav&Rf, Nam Ah Nguyen

Electrical Engineering

Animal tracking collars transmit very-high-frequency (VHF) beacon signals so researchers can locate tagged wildlife in terrain where direct visual tracking is difficult. This project develops a radio-frequency (RF) wildlife tracking prototype in which a UAV carries a receiving antenna and receiver over the search area to detect the collar signal and send measurements to a ground station. A transmitter test device was built to emulate a tracking collar. An STM32 microcontroller reads keypad input, controls a digital-to-analog converter (DAC), tunes a voltage-controlled oscillator (VCO) to the selected VHF frequency, and sends the RF signal through an amplifier and antenna. The …

Ugv-Based Vertebrate Pest Deterrence In Vineyards: Vision-Guided Row Patrol And Navigation, Candace Qualls, Karina Wilson, Ben Badhorn

Electrical Engineering

An increase in agricultural demands and the need to sustainably protect crops has created a need for autonomous navigation through a vineyard with a verified pest detection and deterrence system. Developing this solution revealed several challenges. First, the robot must reliably navigate through structured, repetitive vineyard rows. Second, pests must be detected accurately under changing environmental conditions. Lastly, the system must respond with a chosen deterrent within an appropriate time window, all while minimizing false triggers. To address these challenges, this project uses a Husky A200 unmanned ground vehicle equipped with a 2D LiDAR sensor, an Intel RealSense RGB camera, …

Uav Trio Formations For Aerial Pest Deterrence With Vision-Based Bird Monitoring, Benjamin Andrew Ly, Chris Kwon, Christian Joseph Macaranas

Electrical Engineering

No abstract provided.

Portable Food Pasteurization Using Pulsed Electric Fields (Pef), Thomas E. Mcmillan Iii

Electrical Engineering

Foodborne illnesses remain a significant public health concern, motivating continued development of alternative food pasteurization technologies. Pulsed electric field (PEF) treatment is a non-thermal pasteurization method that inactivates microorganisms through electroporation while minimizing thermal degradation of food products. The long-term objective of this project was development of a portable PEF food pasteurization system.

An iterative design approach was used to investigate generation of the high-voltage pulses required for PEF treatment. Multiple pulse forming network topologies were evaluated through simulation, leading to selection of a solid-state Marx generator architecture. A low-voltage five-stage prototype was designed, constructed, and tested to validate the …

A Broadband, Dual Polarized Antenna For The Radio Neutrino Observatory In Greenland, Laken Baker

Electrical Engineering

Neutrinos contain information necessary to determine the origins of the universe and cosmic events because they can travel long distances with minimal interaction, preserving information about their cosmic origins. Since neutrinos interact with ice sheets resulting in RF radiation, antennas have been developed to detect RF transmissions.

A compact 'vane structure' (see Fig. 1a) dual-polarized broadband antenna model has been developed, constructed, and characterized according to input reflection coefficient, and co and cross-pol E and H plane radiation patterns using HFSS and Cal Poly San Luis Obispo’s anechoic chamber for the Radio Neutrino Observatory in Greenland (RNO-G) [1]. Its design …

Wireless Communication In Autonomous Vehicles, Kaylie Bao, Nicholas Andrews, Mark Negus

Electrical Engineering

This project focuses on developing and testing a vehicle-to-everything (V2X) communication system using Dedicated Short Range Communications (DSRC) based on the IEEE 802.11p standard. The system uses the NXP i.MX 8XLite V2X Evaluation Kit, which includes the SAF5400 modem for wireless communication in the 5.9 GHz band.

The main goal of this project was to establish reliable communication between two V2X evaluation boards and to verify that custom, user-defined data could be transmitted between them. Through iterative testing, we were able to successfully send and receive custom 802.11 frames using the provided command-line tools and achieve consistent communication between nodes. …

Vlsi Spike Encoder For Spiking Neural Networks With 4-Bit Sar Adc, Jack Marshall, Wyatt Tack, Cameron Young, Ryken Thompson

Electrical Engineering

A spike encoder forms the interface between sampled data, such as image data or a sensor signal, and a spiking neural network by converting numerical input samples into discrete spike events. Unlike conventional artificial neural networks, spiking neural networks use spare, even-driven computation instead of continuous-valued activations. This makes them attractive for low-power embedded systems, biomedical electronics, and other edge applications where energy consumption, physical area, and thermal limits are important design constraints.

This project develops a modular spike encoder architecture for spiking neural networks with selectable support for temporal, rate, multi-spike, and delta encoding. Prior work has shown that …

Lora Radio Propagation & Antenna Design For Freight Trains, Cesar Chavez, Marlon Jennson Hernandez

Electrical Engineering

Freight-train environments present significant challenges for wireless communication due to large metallic structures, varying cargo types, and changing antenna orientations that can degrade radio-frequency propagation. This project evaluated the performance of LoRa-based communication links intended for End-of-Train (EOT) and Head-of-Train (HOT) systems operating at 915 MHz. Field testing was conducted to characterize antenna performance using metrics including received signal strength indicator (RSSI), signal-to-noise ratio (SNR), and communication range. Experimental results showed that antenna polarization and directivity significantly affect communication performance in freight-train environments. Directional antennas provided improved signal strength when properly aligned but experienced performance degradation as antenna orientation changed. …

Cal Poly Mars Rover Battery Management System, Lawrence Nichols, Caleb Michael King, Thomas Anh Khoa To, Angel Soto

Electrical Engineering

The exploration of space has consistently been one of the most expensive endeavors humanities has undertaken in its journey to expand ever further. The PolyRover project aims to not only cheapen that expense through student-based research but also provide a better bang for buck as more unmanned ground vehicles (UGVs) can be utilized on planets in concert. In order to do so, the rovers need a robust, yet compact battery management system that can fit within the wheel well. Our system will consist of six commercially-available 18650 batteries in series, organized in a hexagonal fashion around the motor. The BMS …

Articulator Volume 32, Issue 2

Metro Denver Dental Society Articulator Magazine

The 2nd Quarter 2026 issue of The Articulator explores the growing intersection between oral health and whole-body wellness, with a focus on oral-systemic health, interdisciplinary collaboration and the role of dentistry in preventive medicine. Articles include:

• A perspective from Dr. Brett Kessler examining what true medical-dental integration would require, including reimbursement reform, collaborative care models and expanded recognition of dentistry’s role in systemic health.
• An evidence-based article from Ms. Anne O. Rice exploring the connection between periodontal disease, inflammation and Alzheimer’s disease, including the role of dentistry in dementia risk reduction and preventive healthcare.
• Insights from Ms. Lani McBeth on …