Digital Commons Network^™

Microcontroller Debugging Efficiency For Low Cost Cubesat Missions, Koowum Joshi, Tyler Nielson, Tyler Field, Aaron Bounias, Michael Goryll

Small Satellite Conference

This study evaluates the debugging efficiency of different microcontrollers for CubeSat applications by using a “debugging box” system that links two devices to detect faulty code. It compares latency, reliability, and cost to identify the most effective low-cost option. The goal is to improve accessibility to space technologies.

Multi-Phase Guidance And Control For Small Satellite Docking Via Deep Reinforcement Learning, Tanner Gill, Greg Furlich, Nisar Ahmed

Small Satellite Conference

As interest in small satellite Rendezvous, Proximity Operations, and Docking (RPOD) grows, so does the need for high-level autonomy in space systems. Current systems relying on constrained hardware and ground-in-the-loop decision-making are ill-equipped for the evolving, contested space domain. Recent research on autonomous spacecraft guidance and control has moved beyond established optimal control and trajectory optimization methods to incorporate Reinforcement Learning (RL), though these efforts have predominantly focused on a single operational phase. This research advances small satellite docking autonomy by formulating the reference scenario as a Hierarchical Markov Decision Process (H-MDP), expanding the scope of the learned guidance and …

Numerical Characterization Of Phase Coherence In Distributed Smallsat Sar Interferometry, Cameron Kaminski

Small Satellite Conference

Distributed SmallSat SAR requires independent spacecraft to maintain phase coherence over long integration times. This work presents a Monte Carlo simulation that combines manufacturer-derived oscillator phase noise, spacecraft thermal dynamics, and orbital perturbations to evaluate passive coherence limits. The results show that oscillator quality alone is insufficient; differential thermal-state evolution becomes a dominant driver of long-duration coherence performance.

Aggiesat6 University Cubesat Ops Prep And Leops, Avery G. Barriga, Garrett M. Stevenson, John F. Connolly

Small Satellite Conference

AggieSat6 (AGS6) is a 6U CubeSat designed and developed by students at Texas A&M University (TAMU) as part of the University Nanosatellite Program (UNP) NS-10 cycle. The mission will demonstrate a space-based radio frequency array for Space Domain Awareness (SDA) applications and collect low-energy electron radiation data to improve existing environmental models. Beginning in January 2025, students at TAMU established mission operations architecture, implemented operator training and certification, and prepared to assume sole responsibility for on-orbit operations. The AggieSat6 bus launched into Low Earth Orbit (LEO) in April of 2026. The AGS6 Mission was supported by the University Nanosatellite Program. …

Processor And Sensor Interfacing On Fpga For Stp-H12-Vantage Space Mission, Christopher Brubaker, Alan D. George

Small Satellite Conference

Previous SHREC Missions

• STP-H5-CSP – Demonstration of CSP and hybrid COTS + rad-hard architecture
• STP-H6-SSIVP – Parallel and distributed computing with multiple CSPs
• STP-H7-CASPR – Onboard processing with next-gen sensors and apps

STP-H12-VANTAGE

• Visual And Neuromorphic Tracking And Geosensing Experiment
• Correlation of neuromorphic and visual sensor data
• Advancing usage of COTS SoMs supplemented with rad-hard monitoring and watchdog circuitry

Promoting Assured Formation Flight Autonomy Onboard Resource Constrained Systems, Ryan Johnson, Maggie Michelsen, Jackson Gardner, Mario Harper, Charles Swenson, Jackson Kulik, Shawn Jones

Small Satellite Conference

Autonomously determining fuel-optimal, formation-keeping trajectories for small spacecraft operating in formation flight is often limited by available processing power. Because SmallSat missions are constrained by size, weight, and power (SWaP), field-programmable gate arrays (FPGAs) are an attractive option for onboard computing. Traditional formation-keeping relies on convex optimization to solve for fuel-optimal burns and burn times; however, implementing these solvers on FPGAs is challenging due to limited board resources.

To address the need for fast, reliable trajectory planning onboard space vehicles, we investigate leveraging machine learning to reduce computational cost for real-time, onboard execution. We propose using a deep neural network …

Pulse-Q: Space-To-Ground Quantum Key Distribution At The Cubesat Form Factor, Logan Hanssler, Stewart Kristiansen, Ellisian King, Neha Chandran, Unnathi Venkatesh, Selina Gao, Nelson Chan, Mika Sadikario, Joseph Sorel, Lexi Liu, Eleanor Gentry, Rohan Gupta, Juan Ignacio Prieto Asbun, Lauren Ayala, Vincent Redwine, Tian Zhong

Small Satellite Conference

Motivation 

• Quantum key distribution (QKD) offers provably secure communication regardless of the technology available to potential eavesdroppers.
• Space-to-ground QKD facilitates long-distance key distribution without costly terrestrial infrastructure.
• The Polarization-modUlated Laser Satellite Experiment – Quantum (PULSE-Q) is a 12U CubeSat mission to leverage recent innovations in compact quantum sources and optical communication to achieve space-to-ground QKD.

Onboard Ai At The Orbital Edge: A Mission Debrief From Stp-H7-Caspr, Evan W. Gretok, Linus Silbernagel, Diego Wildenstein, Michael J. Cannizzaro, Seth Roffe, Alan D. George

Small Satellite Conference

Goals: Enable autonomous Earth observation and onboard sensor data processing with novel compute

Motivations: Growing numbers of spacecraft demand autonomy in operation and data collection

Challenges: Harsh radiation and thermal environment of space over four-year mission lifetime

Feedback Indices To Evaluate Llm Responses To Rebuttals For Multiple Choice Type Questions, Justin C. Dunlap, Anne-Simone Parent, Ralf Widenhorn

Physics Faculty Publications and Presentations

We present a set of indices designed to characterize Large Language Model (LLM) responses when challenged with rebuttals during a chat. Assessing how LLMs respond to user dissent is crucial for understanding their reliability and behavior patterns, yet the complexity of human-LLM interactions makes systematic evaluation challenging. Our approach employs a fictitious-response rebuttal method that quantifies LLM behavior when presented with multiple-choice questions followed by deliberate challenges to their fictitious previous response. The indices are specifically designed to detect and measure what could be characterized as sycophantic behavior (excessive agreement with user challenges) or stubborn responses (rigid adherence to the …

A Model Intercomparison Study Of Mixed-Phase Clouds In A Laboratory Chamber, Aaron Wang, Sisi Chen, Steven K. Krueger, Piotr Dziekan, Kotaro Enokido, Fabian Hoffmann, Agnieszka Makulska, Bernhard Mehlig, Gaetano Sardina, Grigory Sarnitsky, Silvio Schmalfuß, Shin Ichiro Shima, Fan Yang, Mikhail Ovchinnikov, Raymond Shaw

Michigan Tech Publications

Supercooled liquid water often persists in mixed-phase clouds for hours to days, even though a simple, well-mixed Wegener-Bergeron-Findeisen model predicts rapid depletion of liquid water in the presence of ice. The persistence is well documented, but the relative importance of the maintaining mechanisms remains uncertain. This model intercomparison study addresses this issue by comparing results from 10 model configurations against observations from the Pi Cloud Chamber at Michigan Technological University, which produces cloudy Rayleigh-Bénard convection. To simplify the problem, we exclude ice-nucleating particle processes and assume that the ice crystals are spherical. Each model was first tuned to reproduce the …

How To Blow Up An Ai Data Center, Tyler Rife

Journal of Communication Pedagogy

This essay advocates a critical pedagogical orientation to AI guided by a politics of refusal. I pursue this advocacy by, first, showing how the social and environmental harms of AI technology outweigh any promises to its social good and then, second, locating resonances between our contemporary technological situation and similar inflection points in the histories of labor organizing and environmental justice activism. Together, these material implications of the emergent technology help form a pedagogical framework for how communication educators can advance critical literacy about AI in the classroom as a constructive counterpoint to its uncritical adoption in the learning process. …

Ai And Agency: Policy As Problem Posing In The Introductory Communication Studies Classroom, Deanna L. Fassett, Nancy Park

Journal of Communication Pedagogy

This forum essay examines artificial-intelligence policy in introductory communication courses through the lens of critical communication pedagogy. It identifies a tension between institutional pressures for readily enforceable, surveillance-oriented AI policies and relational approaches that support instructors’ and students’ long-term agency. Drawing on problem-posing pedagogy, the authors argue that prepackaged policies can position teaching assistants as policy enforcers rather than reflective educators. They propose collaborative policy development as a means of fostering dialogue, ethical discernment, human connection, and critical engagement with AI’s role in communication education.

Creating Safe(R) Classrooms: Trauma-Informed Teaching Practices In Higher Education, Shannon Pappas, Nolan Bowers, Lili R. Romann

Journal of Communication Pedagogy

Trauma is a public health issue, with effects being increasingly harmful for adolescents. While instructors cannot control how students respond to trauma, they can work to create traumainformed teaching practices to support student learning and safety. Based on the principles of trauma-informed pedagogy, this manuscript details how safety, trustworthiness and transparency, choice, collaboration, and empowerment can be implemented in higher education communication courses. Additionally, a sixth principle, responding to the current climate, is introduced. Currently, instructors are grappling with supporting vulnerable students and answering to those in power. These practices offer insights into classroom adaptations to assist instructors in these …

Community Problems Need Community Solutions: Feminist Collaboration Across Campuses To Create Transformative Outcomes Through Community Engaged Learning, Elizabeth Wilhoit Larson, Jasmine R. Linabary, Ziyu Long, Kylie J. Johnson

Journal of Communication Pedagogy

This study presents a multi-institutional engaged pedagogy project responding to college food insecurity that involved partnerships among students, instructors, and campus food pantries from three U.S. universities. Through analysis of pre- and post-class surveys, class assignments, and instructor and community partner reflections, we argue that our feminist collaborative approach resulted in transformative outcomes in three areas: (a) heads, as the collaboration enabled critical understandings of food insecurity and how to combat it; (b) hearts, as the collaboration fostered a culture of care and (re)ignited shared passion in doing change work, and (c) hands, as the collaboration inspired actions to address …

Decolonizing Communication Pedagogy: Toward An Afro-Rhetorical Framework, Lionnell Smith

Journal of Communication Pedagogy

This essay introduces Afro-rhetorical pedagogy as a decolonial framework for communication pedagogy. Building on Adam Key’s 2022 call for an Applied Africana Studies framework for public speaking pedagogy, this essay conceptualizes Afro-rhetorical pedagogy grounded in Afrocentric thought and African communication theory. Through a close reading of Molefi Kete Asante’s 2011 address on African curriculum, this essay establishes three foundational principles for Afro-rhetorical pedagogy: (a) epistemological agency, (b) decolonized knowledge production, and (c) institutional reconstruction. This pedagogical framework addresses communication education’s reproduction of white cultural hegemony by promoting African-centered principles, practices, and precepts that reposition communication pedagogy as a more liberatory …

Meeting Rhetorical And Relational Goals In Online Higher Education: Insights From A South African Case Study, Rentia Du Plessis, Diana Breshears, Luzelle Naudé Prof

Journal of Communication Pedagogy

This qualitative study examines the degree to which synchronous and asynchronous online learning platforms both supported and constrained the achievement of rhetorical and relational goals in a resource-constrained South African higher education context. As online teaching practices persist in the post-COVID era, understanding how to design pedagogically sound online environments is increasingly important, particularly in the Global South where cost, access, and connectivity pose significant constraints. Drawing on the Rhetorical and Relational Goals Theory (RRGT; Mottet et al., 2006) and Kaufmann et al.’s (2016) online learning climate dimensions, the study analyzes undergraduate students’ perceptions of Blackboard Collaborate, PowerPoint voice-overs, WhatsApp, …

Caveats For The Forensic Use Of The Pcl-R With Antisocial And Psychopathic Women, Carl B. Gacono, Ted B. Cunliffe, Jason M. Smith, Enna E. Taylor

Archives of Assessment Psychology

Special considerations are necessary when assessing antisocial and psychopathic women.  Evident throughout the evaluation process (Cunliffe et al., 2016; Gacono, 2016; Gacono & Meloy, 1994; Gacono & Smith, 2021; Smith et al., 2014, 2021; Taylor, 2015), gender differences suggest the need for modified approaches, shape the transference/countertransference between examinee and examiner, and affect the administration, scoring, and interpretation of psychological tests. In this article we summarize Rorschach findings that support the underlying dynamics in antisocial and psychopathic women, discuss the unique aspects of evaluating the female psychopath, and present eight PCL-R items in need of modification for assessing women.

Experimental Investigation On Nanocellulose And Aluminium-Oxide Hybrid Nanofluid As A New Coolant For Radiator, D. Ramasamy, Sivaraos Sivaraos, K. Kadirgama

The Nexus of Sustainability and Energy Technology Journal

Improved efficiency leads to more compact design of the radiator. The research is conducted to prove that addition of Aluminium Oxide and nanocellulose originating from plant base with varying concentration provides a better thermal efficiency compared to usage of distilled water as radiator coolant. The objective of the research is to improve a new radiator coolant based on combination of aluminium oxide and nanocellulose with readily available coolants which is Ethylene Glycol and to investigate the erosion of nanocellulose coolant on automotive radiator. The scope of the research are the nanocellulose dispersed in base fluid which is from 60:40, (EG:W). …

Implementation Of 4-Ir In Scm Of Woven Apparel Industry – A Case Study In Bangladesh For Prosperity And Sustainability, Kaniz Farhana, Nazibah Nowreen Onadee, Farhana Mabia Mim, Fuzail Ahmed Khan Rajit, Md. Fahad Faruk Pavel, S.M. Farhana Iqbal, Abu Shadate Faisal Mahamude

The Nexus of Sustainability and Energy Technology Journal

The significance of the Fourth Industrial Revolution (4-IR) for supply chain management (SCM) in the woven clothing industry is emphasized by this survey study. The implementation of cutting-edge technologies that can improve these aspects, like IoT, RFID, blockchain, big data analysis, cybersecurity, and automation, is examined from the viewpoints of woven clothing manufacturers. This investigation seeks to determine Bangladesh's key technological barriers as well as the primary motivator for the weaving RMG's adoption of cutting-edge technologies. Here, a combination of methods, including fieldwork and data collection, has been performed for thorough analysis. The research outlines the current state of affairs …

Evaluation Of Graphene Cathode And Aluminum Ion Ev Battery Performance: A State-Of-The-Art Analysis For Future, Abu Shadate Faisal Mahamude, Kaniz Farhana

The Nexus of Sustainability and Energy Technology Journal

Lithium-ion batteries may eventually be replaced with rechargeable aluminum-ion batteries (AIBs) due to their high energy density, increased safety, and plentiful supply of raw materials. The development of appropriate cathode materials for AIBs is a major priority these days. As a result of their better quality, graphene-based cathodes have a great chance of success. Graphene is a relatively new and promising material with a unique set of chemical and physical characteristics. Graphene's high electron conductivity and large specific surface area make it seem like one of the best electron-conducting additions, but there are several other ways to increase the cathode …

Atomistic Insights Into The Interfacial Properties And Thermal Transport Of Mxene–Copper Nanocomposites: A Molecular Dynamics Study, Navid Aslfattahi, Maryam Sadat Kiai, K. Kadirgama, L. Samylingam, Chee Kuang Kok, Mohd A.F. Rosli, Thong Leng Lim

The Nexus of Sustainability and Energy Technology Journal

Understanding the interfacial heat transport mechanisms in Ti₃C₂T_x–copper nanocomposites is essential for developing advanced Thermal Interface Materials (TIM) for electronic and energy systems. This study provides atomistic insights into how MXene surface terminations (–O, –OH, –F), copper crystallographic orientations ((111), (100), (110)), and MXene layer thickness influence thermal conductivity and interfacial thermal resistance. O-terminated MXene exhibited the strongest interfacial adhesion (∼0.45 J/m²) and the highest thermal conductivity (∼68 W/m· K), while F-terminated MXene showed the weakest interfacial bonding and poorest heat transfer (∼45 W/m· K). Increasing the MXene thickness introduced additional phonon …

Initial Pilot Test Of A Single-Session Social Support Program For Increasing Social Approach Behavior And Social Support In Emerging Adults, Emily L. Jones

Electronic Theses and Dissertations

Emerging adulthood, the developmental stage between adolescence and young adulthood (Arnett, 2000), is marked by increases in autonomy, changes in social dynamics, and identity exploration (Arnett, 2015). During this stage, social stressors may trigger or exacerbate preexisting mental health problems (Slavich & Auerbach, 2018), though few emerging adults seek or receive mental health support (Zhao et al., 2025). Single-session interventions, or “specific, structured programs that intentionally involve just one visit or encounter” (Schleider et al., 2019), may present an opportunity to provide some support to those who face barriers to participation in traditional forms of treatment (Janota et al., 2022). …

Norman H. Cromwell, Unl Chemistry; Nu System Dean; Eppley Cancer Center Director, Norman H. Cromwell, Pete Boughn, Mark A. Griep

UNL ORCA Interview Series

This 1980 interview of Normal Cromwell was done by Pete Boughn at the University of Nebraska Medical Center in Omaha. He asked about Cromwell’s history but mostly about his time as director of the Eppley Cancer Center. The interview is reproduced with permission from the UNMC McGoogan Library.

Cromwell was born in 1913 in Terre Haute, Indiana. In 1935, he earned a bachelor’s degree in chemical engineering from the Rose-Hulman Institute of Technology in his hometown. In 1939, three things happened: he earned a doctorate in organic chemistry from the University of Minnesota, he got married, and he was hired …

Msw Portfolio, Liam A. Sienko

Graduate Student Portfolios, Professional Papers, and Capstone Projects

No abstract provided.

Molecular Interactions Of The Gas–Solid Interface: Svocs On Swelling Clays And San Joaquin Soil Surfaces, Liesl T. Jensen

Electronic Theses and Dissertations

Soil-derived mineral dust plays an important role in atmospheric chemistry by acting as a reactive interface for gas–particle interactions that influence the fate and transport of organic contaminants. Among soil components, clay minerals dominate surface reactivity due to their high surface area, structural complexity, and the presence of chemically active sites arising from cation exchange capacity and surface acidity. Environmental conditions, particularly relative humidity, further regulate these interactions by altering surface accessibility and competitive adsorption processes.

Despite the recognized importance of mineral dust, gas-phase interactions between organic compounds and clay minerals remain insufficiently understood, particularly under atmospherically relevant conditions. This …

Adolescent Depressive Symptoms And Adult Functioning Within Major U.S. Racial Groups, Summer N. A. Millwood

Electronic Theses and Dissertations

Depression is the leading cause of disability among adults in the U.S and is associated with negative short- and long-term social, emotional, economic, and physical health outcomes. Notably, rates of depression among children and adolescents are rapidly increasing across the globe. Depression in youth disrupts crucial developmental processes that can adversely affect concurrent and longitudinal socioeconomic and health outcomes. Although extant research delineates the consequences of adolescent depression for adult functioning (e.g., lower educational attainment, fewer economic resources, worse physical health), studies that examine these associations within racially minoritized populations are scarce. This gap in the literature is especially striking …

Designing Inclusive Stem Curricula: A Design-Based Study Of Teacher Learning And A Queer Inclusive Framework, Kyle Nolting

Electronic Theses and Dissertations

STEM (Science, Technology, Engineering, and Mathematics) education has historically marginalized queer identities, shaping inaccurate curricula and fostering unwelcoming classroom environments. To address this, my research uses design-based research to investigate the design of queer-inclusive STEM curricular resources. I partnered with in-service secondary STEM teachers amidst a series of professional development courses to co-create curricular resources. My research is grounded in queer theory, using a Gender Inclusive Framework to collaboratively develop inclusive design principles. My findings revealed a strong desire by teachers for more authentic and fluid representations of gender and sexuality in STEM curricula, particularly beyond the biological science discipline. …

Community Perspectives On The Health And Well-Being Of Adults With Serious Mental Illness, Joy Maddigan, Ahmad Deeb, Jill Bruneau, Chantille Isler

International Nursing Research Congress (INRC)

Background: Worldwide, individuals with serious mental illness (SMI) face challenges in caring for their physical and mental health (Firth et al., 2019). Illness symptoms, medication effects, poverty, and lack of attention by health professionals jeopardize their wellbeing and result in the early development of long-term diseases leading to early death (Hallyburton & Alison-Jones, 2022). The situation continues to worsen in spite of decades of awareness and recognition (Chan et al., 2023).

Objectives: To explore the perspectives of members of the mental health community about the context, barriers, and best practices for engaging individuals in wellness activities and healthy behaviors.

Methods: …

Nurses’ Attitudes Towards Complementary And Alternative Medicine In Cancer Care – A Narrative Review, Saphir Davies, Patricia Eyres, Matt Carey, Kevin Hambridge

School of Nursing and Midwifery

Aims: This narrative review explored nurses’ attitudes towards complementary and alternative medicine (CAM) use in cancer care. Design: The study design was a qualitative narrative review with meta-aggregation. Data sources: Published studies were identified via searching the following databases: Medline, CINAHL, Pubmed and AMED.Review methods: Four papers that met the inclusion criteria were appraised using the Critical Appraisal Skills Program Tool. The qualitative data was extracted and meta-aggregated into three synthesised findings. Results: Four papers were included exploring nurses’ attitudes towards CAM in cancer contexts in four different countries. From these papers, 20 findings were extracted and formed into eight …

Synergistic Reinforcement Of Lignin–Chitosan Hydrogels Using Vanillin As A Sustainable Green Crosslinker, Moses Ayitey-Adjin Jr., Mohammad Jahid Hasan, Jeremy Erb, Kishore Chand, Garry S. Crosson, Kenya Crosson, Esteban Ureña-Benavides, Erick Salvador Vasquez-Guardado

Chemical and Materials Engineering Faculty Publications

While bio-based hydrogels derived from lignin and chitosan are promising sustainable adsorbents, their practical application is hindered by poor mechanical stability. This study addresses this limitation by synthesizing lignin-chitosan hydrogels using vanillin as a green, bio-derived crosslinker via a facile solution-casting method. The formation of imine (Schiff base) linkages between the aldehyde groups of vanillin and the primary amines of chitosan was confirmed by FTIR spectroscopy (C = N stretching at ~ 1602 cm^− 1). SEM and TGA results demonstrated a reduction in the pore size of the crosslinked hydrogel and an enhanced residual thermal mass. Rheological and …