Digital Commons Network^™

Software For The Alpha Cubesat Mission: System Architecture, Development, And Testing Behind Successful Flight Operations, Eric Zhang, Jonathan Ma, Joshua Umansky-Castro, Lauren Greenhill, Duncan Mcdonald, Damian Hackett, Maria Boza, Cameron Goddard

Small Satellite Conference

Alpha CubeSat is a 1U CubeSat designed, built, and operated by a student-led team at Cornell University. Its primary mission is to deploy a free-flying lightsail in low Earth orbit, carrying gram-scale "ChipSat" flight computers as a demonstration of low-cost distributed sensing in space. The spacecraft was built around commercial, off-the-shelf hardware, including a Teensy 3.5 microcontroller as the primary flight computer and a RockBLOCK Iridium modem for communication, and was developed and flown under the constraints that define a student program: a small power budget, a rotating team, limited development time, and an intermittent operations radio link. The CubeSat …

Generalized Attitude Control For Small Spacecraft, Patrick Mckeen, Niclas Scheuer, Kerri Cahoy

Small Satellite Conference

Published controllers are derived for one actuator set, pointing goal, orbit, and disturbance model. Porting one means reproducing the paper, validating the implementation, then changing hardware and mission assumptions together.

Concept Of Operation Logic And Implementation Expectations For Multimode Propulsion Technology Demonstration Missions, Logan Thompson, Michael Harrigan, Theresa Sandborn, Victoria Coverstone, Joshua L. Rovey

Small Satellite Conference

Traditional single-mode propulsion systems are typically optimized for either high-thrust, short-duration maneuvers (chemical propulsion) or high-efficiency, low-thrust operations (electric propulsion). For CubeSats, which are limited by mass, volume, power, and system complexity, carrying separate propulsion systems for each mission phase is often impractical. Multimode propulsion systems overcome this limitation by combining chemical and electric propulsion within a shared architecture, allowing a single spacecraft to perform both rapid maneuvers and efficient long-duration orbit maintenance.

Demonstrating a multimode propulsion system requires more than operating two propulsion modes on the same spacecraft. Shared propellant, feed systems, thermal interactions, power usage, and transitions …

Ice Giant Watch Dog: Cubesat Concept To Monitor Weather On Neptune, Isabela Huckabee, Don Banfield, Nikole Lewis, Elijah Mullens, Abby Boehm

Small Satellite Conference

Why Neptune?

Neptune hosts one of the most dynamic weather systems in the solar system, yet it hasn't been closely observed since the Voyager-2 flyby. Existing observing programs [1,2] are too infrequent to capture the day-to-week timescales on which storms and clouds evolve, but a dedicated CubeSat could fill this gap.

The current project has two goals:

1. Explore the photometric precisions achievable by a CubeSat platform
2. Determine whether the presence of clouds will be detectable by a CubeSat platform

Lighting Up The Moon: A Scheduling Framework For Cislunar Space Based Solar Power Orchestration, Vaibhav Bhosale, Andrew Woo, Ada Gavrilovska, Christopher R. Valenta, Ketan Bhardwaj

Small Satellite Conference

Surviving the Lunar Night

• 14 Earth day lunar nights
• More batteries, more mass, higher cost

Sierasat: A 6u Cubesat Platform For Space-Based Solar Power, Sutharsan Indrakumar, Ahmed Guller, Leann Cwieka, Justin Parry, Minh Nguyen, Kaegan Lucas, Carson Bove, Chaitra Nulu, Myles Thomas, Sophia Jones, Deepak R. Mishra

Small Satellite Conference

Reliance on fossil fuels, combined with the physical limits of ground-based solar arrays, makes a strong case for collecting solar energy in orbit. Earth intercepts roughly 1.4 kW/m² at the top of the atmosphere, but absorption by carbon dioxide and water vapour and atmospheric scattering cut peak surface intensity to about 1.1 kW/m², this results in an over a 20% reduction. While inclination, time of day, and weather restrict that to a narrow band of land for a few hours each day.

The Solar Incident Energy Relay Array (SIERA) is a proposed mission that will create a single 6U CubeSat …

Association Between Pain Catastrophising And Functional Limitation In Patients With Knee Osteoarthritis: A Cross-Sectional Study In A Tunisian Rehabilitation Setting, Soumaya Elarem, Ikram Haddada, Ameni Ameur, Ferdaous Blel, Nedra El Feni, Aymen Fekih, Aymen Haj Salah, Mouna Sghir, Wassia Kessomtini

Sultan Qaboos University Medical Journal

Objectives: Knee osteoarthritis (KOA) is a common reason for consultation in rehabilitation settings, responsible for pain and restricted autonomy. This study aimed to determine the association between catastrophising and functional limitation in patients followed for KOA in physical medicine and rehabilitation. Methods: This cross-sectional analytical study was conducted from June to August 2025 at the Department of Physical Medicine and Functional Rehabilitation in Taher Sfar University Hospital, Mahdia, Tunisia. Demographic data, the history of KOA as well as the radiographic stage of Kellgren and Lawrence were collected from patients with KOA. Functional impairment was assessed by the Lequesne knee index …

Business Educational Skills For Successful Aviation Fire Officers, Leo Sedlmeyer

All Faculty and Staff Scholarship

Purpose: This paper explored the business educational skills aviation fire officers use to manage airport fire departments.

Design/Methodology/Approach: The methodology was a qualitative phenomenological study design. The participants began with 10 aviation fire officers from airports throughout the USA who were at least 28 years old, in a leadership role, and had at least 10 years of experience as aviation fire officers (Buttenschon, 2016). Saturation was reached at seven during the interview phase. The limitations of this study were gaining participants' trust and obtaining comprehensive information from them.

Findings: Six themes emerged from this study, with the top three identified: …

``I Don't.. I Don't Remember The Answer'': A Psycholinguistics Study Of Language Processing Impairment Caused By Traumatic Brain Injury In Film ``The Vow'' (2012), Fathiya Rosyada, Emy Sudarwati, Lee Huan Yik, Putrie Rahayuningtyas

Bahasa dan Seni: Jurnal Bahasa, Sastra, Seni, dan Pengajarannya

There is substantial evidence of an association between traumatic brain injury (TBI) and language difficulties, particularly those related to cognitive impairment. Addressing an underexplored narrative perspective, this study examines the interaction between memory and language in the representation of cognitive-communication disorder (CCD) following TBI in the film The Vow (2012). Using a qualitative approach informed by Clinical Discourse Analysis (CDA), the study analyzes selected dialogues to identify post-traumatic cognitive-communication difficulties reflected in language comprehension and production. The findings reveal a dissociation between relatively preserved linguistic competence and impaired communicative performance. In language comprehension, this dissociation is reflected in pragmatic misinterpretation, …

The Experience Of Wellness And Self-Care For Graduating Bsn Students, Jenny Pappas, Terri A. Clark, Tasha Ruffin, Deborah Ellison, Adrienne Wilk, Debra Rose Wilson

Journal of Social, Behavioral, and Health Sciences

The aim of this study was to explore how graduating prelicensure bachelor of science in nursing (BSN) students experience self-care and wellness, with the goal of informing future curriculum development. Nursing students face significant academic, emotional, and sociocultural pressures that heighten vulnerability to burnout. Despite widespread agreement that self-care is a professional expectation, little is known about the students’ experience within demanding programs. Guided by Orem et al.’s (2001) self-care deficit theory, a qualitative study using interpretive hermeneutic phenomenology was used to examine lived experiences of self-care and wellness. Sixteen graduating BSN students participated in in-depth, semistructured interviews. Interviews were …

Cognitive Warfare And The Brain-As-Battlespace: Neuroscience, Artificial Intelligence, And The Emerging Domain Of Neurostrategic Competition, James Giordano, Robert Schmidle

Strategic Insights

The human brain is becoming a consequential arena of strategic competition. This commentary looks at how cognitive warfare draws on the neural processes underlying perception, emotion, trust, identity, judgment, and decision-making to influence individual and collective behavior. It describes how existing beliefs, biases, social affiliations, and information environments shape the way people interpret and respond to competing narratives, making natural cognitive processes potential targets for exploitation. Dr. Giordano and Dr. Schmidle trace how advances in neuroscience, artificial intelligence, big-data analytics, neurotechnology, and behavioral modeling are expanding the ability to assess and potentially influence cognition. Particular attention is given to population …

Analyzing The Relationship Between Ai-Enhanced Accounting Disclosure And Financial Reporting Quality: Digital Transparency As A Mediating Variable, Mawj Abbas Jasim Al-Hchaimi, Hasan Talib Hashim, Mohammed Adhab Jassim

Muthanna Journal of Administrative and Economics Sciences

The current research aims to study the relationship between AI-enhanced accounting disclosure and the quality of financial reports in the Iraqi banking sector, while also examining the role of digital transparency as a mediating variable in explaining this relationship. The research was conducted on a sample of 180 financial managers, accountants, internal auditors, and IT specialists from three Iraqi banks: Bank of Baghdad, Al-Rasheed Bank, and the Commercial Bank of Iraq. The research employed a descriptive, analytical, and field-based methodology, using a structured questionnaire, personal interviews, and objective system-performance indicators as the main tools of data collection. Data were analyzed …

The George-Anne Daily, Georgia Southern University

George-Anne Media Group: Newsletters & Magazines

No abstract provided.

Redo-Transcatheter Aortic Valve Replacement With Self-Expanding Valves: A U.S. Registry Analysis., Toby Rogers, Vinayak N Bapat, Stanley J Chetcuti, Harold L Dauerman, John K Forrest, Sachin S Goel, Kendra J Grubb, Wah Wah Htun, Rishi Puri, Michael J Reardon, Gilbert H L Tang, Amit N Vora, Steven J Yakubov, Ruth Eisenberg, Guilherme F Attizzani

Heart and Vascular Articles

BACKGROUND: Redo-transcatheter aortic valve replacement (TAVR) for failed transcatheter heart valves is expected to increase, but data on outcomes with self-expanding valves remain limited.

OBJECTIVES: The aims of this study were to evaluate procedural, clinical, and quality-of-life outcomes following redo-TAVR using self-expanding Evolut valves and to compare these outcomes with those among a contemporary native TAVR cohort.

METHODS: Outcomes after redo-TAVR with Evolut R, Evolut PRO, and Evolut PRO+ valves in the Society of Thoracic Surgeons/American College of Cardiology TVT (Transcatheter Valve Therapy) Registry were analyzed and compared with outcomes after native-valve TAVR using the same valve platform during the …

From Awareness To Engagement: University Students’ Perceptions Of The Sustainable Development Goals And The Role Of Higher Education Institutions, Ajda Fosner

Higher Learning Research Communications

Objectives: This study examines how university students perceive the Sustainable Development Goals (SDGs), with a focus on their self-reported knowledge, attitudes, and views on the role of institutions in promoting sustainability.

Methods: An online survey was conducted among students in Slovenia.

Results: The results show that most students are aware of the SDGs and support their integration into education, although their personal engagement with sustainability practices is more reserved. Statistical analysis revealed that both the level and field of study significantly influence students’ SDG awareness, with advanced and social science students reporting higher familiarity. Regarding institutional roles, students placed the …

Wildfires And Adolescent Mental Health: A Call To Action, Troy Allan

All Current Publications

Although wildfires affect people across the lifespan, adolescents warrant focused attention because wildfires can disrupt several systems that are especially important during this developmental period, including family relationships, peer networks, schools, routines, housing stability, and a developing sense of safety and identity. This fact sheet provides an overview of current research and a practical response pathway for professionals and families.

New Frontiers In Diagnosing Equine Lameness, Hyrum Hoopes, Karl Hoopes

All Current Publications

Lameness is one of the most common and expensive health problems seen in horses. Modern technology allows veterinarians to look beneath the surface. Tools such as artificial intelligence (AI), computed tomography (CT), magnetic resonance imaging (MRI), digital radiography (X-rays), nuclear scintigraphy, ultrasound, and positron emission tomography (PET) give clearer, more detailed pictures of what’s happening inside the horse’s leg. Each technology offers different advantages, from identifying uneven movement to revealing hidden damage within bones, joints, or soft tissues. When combined with veterinary visual evaluation, they help pinpoint the cause of lameness faster and more accurately than ever before.

Mackay Props. Llc V. Hernandez

All Decisions

Court grants tenant's pro se OSC for stay of execution of warrant of eviction based on HRA one-shot-deal approval covering substantial arrears. Court orders entire proceeding stayed until landlord corrects HPD violations including Class C immediately hazardous violations, citing Park West Management Corp v Mitchell warranty of habitability mandate. Landlord further enjoined from starting a new nonpayment proceeding during the stay.

Spatial Reconstructability Analysis: Information-Theoretic Modeling Of Categorical Raster Data, David Percy

Dissertations and Theses

This research focuses on the application of Reconstructability Analysis (RA), an information-theoretic machine learning (ML) methodology, to categorical spatial data in Geographic Information Systems (GIS). RA was developed in the systems community with applications including classification, prediction, pattern recognition, and decision analysis. RA is implemented in OCCAM (Organizational Complexity Computation and Modeling), a software suite developed at Portland State University that analyzes discrete data in tabular form, with observations in rows and variables in columns. While RA has been successfully applied to a variety of domains, no systematic application to georeferenced raster data arranged in regular grids has been previously …

Compbio And Miras-A Multi-Omic Analysis Platform Built On A Memory-Based Intelligence Engine, Ruteja A Barve, Chad E Storer, Wayne D Hoxsie, Curtis Marcum, Joshua F Mcmichael, Jared M Lalmansingh, Brittany K Smith, Mark R Johnson, Daniel J Kuster, Richard D Head

2020-Current year OA Pubs

As molecular and cellular technologies have advanced, the need to analyze and interpret the resulting vast and multi-modal data into actionable intelligence has become a rate-limiting factor in scientific advancement. While traditional knowledgebase-pathway tools and LLM-based AI tools provide a degree of support in data interpretation, both exhibit known limitations. Presented here is the CompBio multi-omic analysis platform built upon Memory-based Intelligent Reasoning System (MIRaS), an associative reasoning engine grounded in episodic and semantic memory, capable of inferring biological relationships directly from stored knowledge rather than from model training. The MIRaS system is not dependent on human-curated pathway knowledgebases, provides …

India's New Urban Development Regime And The Mirage Of Inclusion: The Urban Challenge Fund And City Economic Regions, Mathew Idiculla

Journal of Law and Public Policy

This paper examines two recent additions to India’s urban development paradigm—the Urban Challenge Fund (UCF) and City Economic Regions (CERs). The Union Budget 2025–26 introduced the UCF, with a ₹1 lakh crore corpus to position cities as growth hubs, followed by CER, offering seven city clusters ₹5,000 crore each over five years through a reform and results-based ‘challenge mode’ financing mechanism. This paper examines the policy frameworks of the UCF and CER and evaluates how they fit into broader trends in India’s urban development policy and engage with questions of social and democratic inclusion. It traces UCF and CER against …

Predictive Validity Of Basc-3 Anxiety And Working Memory Scores For Clinically Significant Test Anxiety: Including Case-Level Examination Of Misclassified Profiles, Des'tiana Williams, Luis E. Aguerrevere, Nina Harness

Archives of Assessment Psychology

High school and college students can struggle with test anxiety, which may result in test scores below the capacity of the student. Previous literature suggests that test anxiety is related to general anxiety and limited working memory (WM), yet the extent to which these factors predict test anxiety in commonly used clinical psychoeducational assessments has not been thoroughly examined. In this study, we examined how well scores on the Behavior Assessment System for Children- 3rd edition (BASC-3) Self-Report Anxiety scale and Working Memory Index (WMI) on the Wechsler Adult Intelligence Scale – Fourth Edition (WAIS-IV), Wechsler Intelligence Scale for Children …

Design Improvement And Performance Demonstration Of A Six-Degree-Of-Freedom Thrust Measurement System For High-Precision Formation Flying Missions, Daigo Takasaki, Isamu Moriai, Ten Arai, Kenshin Yamakawa, Keisuke Yorita, Hiroyuki Koizumi, Kimiya Komurasaki

Small Satellite Conference

A six-degree-of-freedom (6-DoF) elastic pendulum thrust stand has been developed for comprehensive measurement of thrust and torque generated by micro-propulsion systems for future formation flying missions. This paper presents ongoing design improvements to the thrust stand, including the introduction of laser-scale displacement sensors and a supported mass design analysis. The analysis considered suspension spring stiffness, spring extension, and vacuum-chamber dimensional constraints. The results indicate that the proposed sensor configuration provides sufficient measurement resolution throughout the investigated design space, while the primary design constraints arise from suspension spring extension and equilibrium spring length. The analysis also provides design guidelines for supporting …

Design And Validation Of A Modular Cubesat Framework For In-Space Assembly, Michael Kuhl, Jonah Goldstein, Kerri Cahoy

Small Satellite Conference

On-orbit assembly enables modular, adaptable satellite architectures that bypass traditional launch volume and deployment response-time constraints. The Orbital Locker (ORLO) project at the Massachusetts Institute of Technology explores this shift in space operations with a prototype-scale demonstration. Standardized satellite sub-U modules are stored within a free-flying mothercraft and assembled on demand by an onboard Cartesian gantry robot, which electrically and mechanically mates the modules into complete 1U and 2U CubeSats as a prototype-scale demonstration. Once assembled, the CubeSat is electrically verified and deployed from the mothercraft into its target orbit.

The ORLO prototype integrates a locker frame, Cartesian gantry robot, …

Design Of A Passive Magnetic Bearing Reaction Wheel For Smallsats And Its Micro-Vibration Performance, Mante Baekeland, Konstantinos Gryllias, Dirk Vandepitte, Cedric Cuypers, Niel Deckers, Tjorven Delabie, René Seiler

Small Satellite Conference

Reaction wheels are a primary source of micro-vibrations aboard satellite platforms, limiting the fine-pointing capability of spacecraft. This paper presents a novel passive magnetic bearing reaction wheel featuring a magnetic–mechanical suspension to reduce operational vibration emissions compared with conventional ball bearing systems. The proposed suspension architecture combines radial permanent magnetic bearings with an axial single-point-contact ball pivot bearing, resulting in a compact, fully passive solution tailored for the SmallSat market. To demonstrate the feasibility of the concept, a hardware prototype was manufactured and tested. Stable operation is achieved across the full operational range up to 4800 rpm. The experimental campaign …

Development Of 4.5 M2 Two-Layer Textile Deployable C-Band Reflectarray Antennas For 100 Kg Satellites, Takuma Komaba, Kodai Suzuki, Kosei Kikuchi, Sonoka Kawashima, Takashi Tomura, Hiraku Sakamoto, Shunsuke Inagaki, Tomoya Takeuchi, Toshiyuki Takahashi

Small Satellite Conference

This paper presents the structural development, fabrication, and broadband design of a 5.8 GHz two-layer textile deployable reflectarray antenna for small satellite applications. Conductive patterns are directly formed on woven textile membranes using printing and plating technologies, enabling the textile surface to function as reflectarray elements while maintaining high stowage efficiency and low mass. For the structural design, an updated configuration incorporating crossbars and multiple catenary segments is proposed to improve robustness against fabrication imperfections and reduce boom loads. A full-scale 4.5 m² prototype is fabricated and successfully deployed, achieving a root-mean-square (RMS) surface error of 0.7 mm under …

Analysis Of Satellite Drag, Orbit Tracking, And Associated Operational Impacts In Very Low Earth Orbit (Vleo), Angela Crews, Adrian Bryant, Nicholas Ratajczyk, Alec Yenawine, Conor Benson, Chris Roseman, Sara Swenson, Greg Furlich, Rick Marcusen, Sierra Flynn, Chris Pankratz, Scott Palo, Iain Boyd, Marcin Pilinski

Small Satellite Conference

Large constellations of SmallSats in Low Earth Orbit (LEO) are now delivering critical capabilities for missions in Earth observation, navigation, and communications. Very Low Earth Orbit (VLEO), defined here as below 400 km altitude, is emerging as a new frontier for SmallSat constellations due to its unique advantages. VLEO offers improved spatial resolution for Earth observations, reduced latency, increased signal power, and a naturally self-cleaning orbital environment. However, operating spacecraft in VLEO is non-trivial as the spacecraft must overcome the residual atmosphere at these altitudes and the resulting increase in aerodynamic drag and atomic oxygen fluence. As interest grows in …

Development, Verification And Operations Of The Technology Demonstration Payloads On The Source-2 Education Mission At The University Of Stuttgart, Marlin Kanzow, Manfred Ehresmann, Daniel Galla, Sabine Klinkner, Aaron Schmidt, Max Bode, Saulius Juodkazis

Small Satellite Conference

The Stuttgart Operated University Research Cubesat for Evaluation and Education 2 (SOURCE-2) mission serves as a student-led hands-on education project at the University of Stuttgart. Developed jointly by the Institute of Space Systems (IRS), and the Student Small Satellite Association (KSat e.V.) at the University of Stuttgart, the mission enables students to apply theoretical knowledge within an interdisciplinary 6U+ CubeSat project while simultaneously serving as a technology demonstration platform for sustainable space technologies. The payload suite targets future On-Orbit Servicing (OOS), Active Debris Removal (ADR), and next-generation small satellite missions. This paper presents the development, verification strategy, and planned in-orbit …

Korucusat-2: Optimizing The Satellite Communication System And Attitude Determination And Control System For Very-Low Earth Orbit, Gianna Goldstein, Carson Burnside-Wheeler, Omer Eski, Ramin Adams

Small Satellite Conference

The KorucuSAT-2 CubeSatellite mission, scheduled for launch in 2027 into a 230-km orbit, is designed around a brief orbital lifetime. This motivates the clear goal of early communication and rapid collection of experimental data within the mission’s limited operational window. CubeSatellites operating in Very Low Earth Orbit (VLEO) can face strong aerodynamic torques and longer detumbling periods. In order to establish early communications and extend the mission’s timeline, a resilient communications system that can operate during the detumbling phase of the mission is needed. The communications system aboard KorucuSAT-2 accomplishes this by using a near-omnidirectional antenna pattern and packet interleaving …

Engineering Model Development Of The Micro Solar Sail Pieris: Single-Motor External-Torque Control And High-Accuracy Sail-Shape Realization, Yusuke Arai, Yusei Kawaguchi, Toshihiro Chujo, Kei Watanabe, Yuki Amaki, Kenichiro Takahashi, Eima Zamami, Kota Saito, Kotaro Yamauchi, Yuya Shiraishi, Shoma Abe, Kenshi Hatada, Moe Yasuda, Sota Sato, Shohei Yamasaki, Matsukawa Ohma, Yota Nakazaki, Hiroki Tanaka, Hisanobu Nomura, Katei Fu, Sora Masaki, Naoya Yamada, Hideo Yoshida, Gen Nakayama, Soma Mori, Takehisa Wada, Takashi Tomura, Hiroki Nakanishi, Yoichi Yatsu, Yasuyuki Miyazaki, Omura Soma, Go Morita, Momoko Fukunaga, Hiroyuki Ono, Takeru Nakamura

Small Satellite Conference

The 40-kg class micro solar sail “PIERIS,” equipped with a 25 m² reflective membrane, will be launched in 2027. This paper explains PIERIS’s mission design, the unique challenges of this satellite system and their solutions, and the current development status. PIERIS will be launched into LEO at approximately 600 km altitude to demonstrate two novel technologies for addressing significant disturbance torques acting on its large membrane surface.

First, it will demonstrate a technology that actively adjusts the offset between the center of action of external torques and the satellite's center of mass to control these torques. PIERIS connects the bus …