Digital Commons Network^™

Turning Titan Photo And Social Media Recap: Welcoming The Class Of 2030 To The Titan Family, Emily Bollinger

Press Releases 2020-2029

No abstract provided.

The George-Anne Daily, Georgia Southern University

George-Anne Media Group: Newsletters & Magazines

No abstract provided.

Midterm Grade Policy

Academic Affairs Policies

Midterm Grades establish a mechanism for early academic intervention for pre-baccalaureate students.

Draft Final 2023 Reclamation Improvement Sites Sampling: Bres No. 31 – Waste Dump #5 Site Evaluation Summary Report, Pioneer Technical Services, Inc.

Silver Bow Creek/Butte Area Superfund Site

This Butte Priority Soils Operable Unit (BPSOU) Reclamation Improvement (RI) Site Evaluation Summary Report (SESR) presents results of soil sampling conducted on October 16, 2023, at the Butte Reclamation Evaluation System (BRES) No. 31 – Waste Dump #5 Site and adjacent areas (referred to herein as Site) within the BPSOU. The BPSOU Consent Decree (CD) (referred to herein as BPSOU CD; EPA, 2020) Appendix D, Attachment C Further Remedial Elements Scope of Work (FRESOW) prescribed further evaluation of sites reclaimed prior to establishment of the Butte Hill Revegetation Specifications (BHRS) (Appendix A to the BPSOU CD), which were initially established …

2026 Final Bpsou Backfill And Cover Material Quality Assurance Project Plan (Qapp), Pioneer Technical Services, Inc.

Silver Bow Creek/Butte Area Superfund Site

This Butte Priority Soils Operable Unit (BPSOU) Backfill and Cover Material Quality Assurance Project Plan (QAPP) provides the procedures and protocols necessary to conduct sampling and geotechnical characterization activities on import borrow and other externally sourced materials that will be used in backfill, cover soil, or engineered caps for upcoming BPSOU remediation activities described in the BPSOU Consent Decree (CD) (referred to as BPSOU CD; EPA, 2020a) Further Remedial Elements Scope of Work (FRESOW) (Attachment C of Appendix D to the BPSOU CD), the 2020 Residential Metals Abatement Program (RMAP) Unilateral Administrative Order (UAO) Amendment (EPA, 2020a), and ongoing maintenance …

Partnership With Otter Tail Power Company Brings Long-Duration Energy Storage Demonstration To University Of Minnesota Morris, Communications And Marketing

Campus News Archive

No abstract provided.

A New Reptile Search Algorithm For An Intelligent Video Retrieval System, Ansam Nazar Younis, Fawziya Mahmood Ramo

Baghdad Science Journal

The increasing volume of videos produced and shared via smart devices has made indexing and retrieving them a clear challenge. Current retrieval systems, such as specialized video retrieval systems, rely on text-based searches, which often misrepresent and frequently result in erroneous descriptions of the requested video, particularly when it comes to videos about certain specialities like security or medical procedures that are hard to describe. As a result, we developed a model that handles information-rich video queries, making it easier to find related videos that are specifically relevant to the user's needs. This paper proposes a new method for indexing …

Representations Of Cartel Leaders In Narcocorridos: A Reflexive Thematic Analysis, Gael Gamboa

Theses and Dissertations

Narcocorridos have become one of the most recognized expressions of narcoculture in Mexico. Despite growing scholarly interest in narcoculture, relatively few studies have examined how cartel leaders are represented across narcocorridos. This study addresses this gap by examining the symbolic representations of Joaquín “El Chapo” Guzmán, Miguel Ángel Félix Gallardo, and Amado Carrillo Fuentes in narcocorrido lyrics. The study is guided by cultural criminology and subculture theory; this study employed a qualitative research design using reflexive thematic analysis. A purposive sample of 25 narcocorridos was analyzed to identify recurring patterns in the representation of cartel leadership. As a result, six …

Personal Authenticity For Engagement And Transfer In Introductory Cybersecurity Education, Daniel T. Hickey, Ronald J. Kantor

Journal of Cybersecurity Education, Research and Practice

Abstract—This conceptual/theoretical paper explores how personal authenticity might promote generative learning in introductory cybersecurity courses. Generative learning transfers confidently to future educational, professional, personal, and testing situations. This cycle of design-based research addresses the concern that more typical professionally authentic contexts (e.g., hospitals, banks, etc.) may be alien and overwhelming to many students, particularly those in introductory courses and/or from non-professional families and communities. If so, this leads to “inert” knowledge that does not transfer. Personal authenticity is rooted in expansive framing, a modern theory of learning transfer. We reframe expansive framing as personal authenticity to make it …

Spot: A Cubesat Mission For High-Resolution Monitorig Of Anthropogenic Sulfur Emissions, Carla Roesch, Colleen Golja, James Custer, Catherine Ember, Jerome Woodwark, Andrew Matheson, Joshua Vande Hey, Sonymol Vk, Steven Heer, Zixuan Gao, Tim Trent

Small Satellite Conference

Resolving individual industrial sources of SO₂ to constrain aerosol forcing — one of the largest remaining uncertainties in Earth's energy budget.

Capstone Demonstration Of Real-Time Autonomous Navigation Using One-Way Radiometric Measurements, Benjamin Leser, Sun Hur-Diaz, Anne Long, Carl De Vries, Nathan Esantsi, Liam Greenlee, Michael Romeo, Nathan Stacey

Small Satellite Conference

autoNGC performed the first ever onboard, real-time spacecraft navigation using one-way forward direct-with-Earth (DWE) radiometric measurements at the Moon

Comparative Analysis Of Reaction Wheels And Control Moment Gyroscopes For High-Capacity Orbital Data Centers In Sun-Pointing Mission Profiles, Chih Ta Wu, Po Hsun Yen, Jen Hao Cheng, Kai Kuo Liao, Shang Jung Lee

Small Satellite Conference

• Orbital data centers (ODCs) are moving from concept to near-term engineering: Starcloud (5 GW), Meta / Overview Energy (1 GW SSP), SpaceX (up to 1M-satellite FCC filing).
• Multi-kW to GW-class compute demands solar arrays of unprecedented scale → extreme inertia and disturbance torques.
• Can Reaction Wheels (RWs) vs Control Moment Gyroscopes (CMGs) hold an ODC in a sun-nadir pointing profile?

Robust Learning-Based Guidance For Close Proximity Operation Scenarios, Luis Sanchez, Charlotte Crawshaw, Reuben Lynch, Natalia Bajnokova, Murray Ireland, Hazel Quibell, Callum Wilson, Lucy Donnell, Maura Allan, Kevin Worral, Matteo Ceriotti

Small Satellite Conference

ROC-ML is a European Space Agency (ESA) funded project led by Craft Prospect in collaboration with University of Glasgow. The project leverages Machine Learning (ML) approaches to augment the performance of robust motion planning in space applications. The developed method of spacecraft motion planning must be suitably computationally efficient to be deployed on low SWAP space hardware.

Toward Public Access To On-Orbit Propulsion Data From Equuleus: Preparing Real Flight Data For Community Use, Hiroyuki Koizumi, Isamu Moriai, Hokuto Sekine, Keita Nishii, Mariko Akiyama, Shintaro Nakajima, Yosuke Kawabata, Yasuho Ataka, Shunichiro Nomura, Ryota Fuse, Ryu Funase

Small Satellite Conference

EQUULEUS is a 6U lunar exploration CubeSat, jointly developed and operated by the University of Tokyo and the Japan Aerospace Exploration Agency (JAXA). It was launched in November 2022 by the Space Launch System (SLS) into a lunar transfer orbit and achieved insertion into a trajectory toward the Earth–Moon Lagrange region through multiple lunar flybys using its onboard water resistojet propulsion system AQUARIUS. The EQUULEUS primary mission is the demonstration of trajectory control technology in the Sun-Earth-Moon region for the first time by a nano-spacecraft.

Zerodur®: Comprehensive Data Enables The Reliability Of Evidence-Based Design, Dustin Ruth, Florian Gollier, Jesse Bonfeld, Dustin Ruth, Janina Krieg, Thomas Westerhoff, Tony Hull, Jacqueline Caraballo

Small Satellite Conference

ZERODUR® is a glass-ceramic formulated for high-performance optics under imperfect temperature control. Crystallites in a glass matrix balance expansion: crystals shrink while residual glass expands, preserving geometry at fine scale.

This yields the lowest passive thermal response of any optical material-enabling high-contrast, high-resolution, low-scatter imaging and minimal transmission leakage for SmallSat telescopes.

To Love, Or Be Loved?, The Philosophical Discussion Group

The Philosopher's Stone

To love, or be loved? By Chris Homer

Advancements In The Ma61c-Smallsat Hardware Board: Elevating Modular Adcs From Trl 5 To Trl 6, Saish Sridharan

Small Satellite Conference

LESSONS LEARNT AND DESIGN JUSTIFICATION

Output from previous phase

• RS422/RS485 Tranceiver: The LCT2865-based interface failed testing and should be redesigned for the next phase.
• Shielded Cabling: Properly grounded shielded cables eliminated JTAG communication instability.

Experimental Leo Cubesat Mission With Pnt And Communication Payloads, Chung-Sheng Lin, Chi-Kuang Chao, Yu-Xiang Lin

Small Satellite Conference

Background: The deployment of Low Earth Orbit (LEO) mega-constellations (e.g., Starlink, OneWeb, Pulsar, IRIS) has driven interest in LEO-based Positioning, Navigation, and Timing (PNT) solutions [1], either through dedicated payloads or signals-of-opportunity.

Objectives: This work proposes a CubeSat mission aimed at verifying integrated LEO communication and positioning capabilities over Taiwan.

Methodology & Mission Plan:

- Constellation: One to four CubeSats will be deployed. Real-time positioning will be tested during simultaneous four-satellite visibility over Taiwan, while recorded-signal positioning will be used for partial constellations.

- Experiments: Dual-mode testing includes concurrent communication and positioning experiments, alongside communication-signal-based …

Revisit Performance Analysis Of Narsha Microsatellite Constellation For Point-Source Ghg Monitoring, Jinyoung Shin, Geuk-Nam Kim, Taemin Kim, Jaemin Hong, Joohee Lee, Marcin Badowski, Seongwhan Lee

Small Satellite Conference

Although microsatellite missions under 100 kg have demonstrated advanced capabilities in detecting localized CO2 and CH4 emissions, the effectiveness of these systems hinges on their spatial and temporal coverage and observation validity under diverse environmental conditions.

Factors such as solar zenith angle (SZA), viewing zenith angle (VZA), surface albedo, weather, and source persistence influence their performance.

Against this background, this study evaluates the spatial and temporal coverage performance of microsatellite-based GHG observation systems through numerical simulations incorporating environmental and instrumental conditions.

Water-Floating Experimental Validation Of Magnetic Decoupling Strategies For Electromagnetic Formation Flight Using Palm-Sized Satellites, Hideki Yoshikado, Atsushi Noda, Daisuke Wakao, Takuya Koiso, Masaru Ishida, Shogo Saito, Korehito Suzaki, Juichi Takahashi, Yuta Yamaguchi

Small Satellite Conference

Goal: a distributed space antenna built from 10,000+ palm-sized satellites, operating together as a single phased-array antenna for direct-to-device communication from orbit [1, 2].

Electromagnetic Formation Flight (EMFF) generates magnetic forces and torques between satellites by controlling their coil currents, enabling propellant-free control of relative position and attitude [3, 4, 5].

However, every coil interacts with every other coil, so unwanted pairs must be magnetically decoupled. Multi-satellite ground validation is also difficult: air-bearing facilities limit the number of units and the test area [6, 7].

This work presents a water-floating testbed and a ten-satellite experiment comparing two magnetic decoupling strategies.

Autongc: One Small High-Fidelity Testbed, One Giant Leap For Autonomous Gn&C At The Moon, Sean Semper, Justin Clavette, Katherine Fowee Gasaway, Hossein Mohammadkhan, Nickalas Cason, Liam Greenlee, Joseph Patton, Grant Ryden, Behnam Azimi, Michael Romeo, Sun Hur Diaz

Small Satellite Conference

Objective:  

• Sustained human presence at Moon/Mars requires autonomous navigation  
• Reduce dependency on human-in-the-loop ground control  
• Enable onboard rapid GN&C in cislunar environment  
• Support multiple measurement types for robust navigation 

A Comparative Analysis Of Sensing Methodologies During Rendezvous & Proximity Operations, Tyler Ritz, Ian Silverberg, Axel Garcia, Giovanni Lavezzi

Small Satellite Conference

The result: Actionable state estimates in seconds not hours

Fusing a small passive imager with a state-of-the-art ranging payload, such as Peregrine Space Corp’s CORVID 12U and 3U variants, collapses the time to a 10 m relative-navigation gate (1σ RSS uncertainty in 3-axes) by two to three orders of magnitude versus angles-only navigation. While ingested measurement types differ across scenarios, the CONOPS remains unchanged. Active ranging replaces hours of parallax inference with direct measurements.

From Model To Mission: A Model-Based Method For Managing Spacecraft Ai&T Activities, Andy Young, Dan Christensen

Small Satellite Conference

Assembly, Integration, and Test (AI&T) is one of the most complex phases of spacecraft development, requiring engineers to coordinate interconnected procedures, specialized equipment, personnel, and evolving schedules. Traditional AI&T planning relies on separate diagrams, schedules, spreadsheets, and documents that must be manually synchronized, increasing engineering effort and the risk of inconsistencies. Meanwhile, many Model-Based Systems Engineering (MBSE) methodologies effectively end before design implementation. We present a methodology that addresses these challenges by extending MBSE practices to provide a single source of truth for AI&T information.

A Stackable Multi-Mppt Power Architecture With Paralleled Inputs For Scalable Cubesat Solar Energy Harvesting, Muhammed Syedali N., Anamika A. Kamath, Nithin Krishnan S. S., Ashfaque K. P., Sijo George, Arun P., Jr-Chiun Roger Tsai, Tensae Ali, Jesmin Jose, Athira B. S.

Small Satellite Conference

In traditional CubeSat configurations, the Maximum Power Point Tracking (MPPT) circuit acts as a critical single point of failure because all harvested solar energy is funneled through a single, non-redundant conversion stage. Consequently, the failure of this individual component completely blocks power delivery to the system, permanently stranding otherwise healthy solar arrays and batteries and causing catastrophic mission termination.

This work introduces a modular, stackable solar energy architecture that distributes power conditioning across multiple identical, autonomous modules connected to shared PV and battery buses. By relying purely on analog input-voltage regulation at a common operating point, it eliminates radiation-vulnerable digital …

Autongc Flight Opnav Experiment Results On Capstone, Andrew J. Liounis, Sun Hur-Diaz, Behnam Azimi, Nichalas L. Cason, Chris R. Gnam, Grant Hecht, Steven Z. Queen, Michael J. Romeo, Sean R. Semper, Nathan Stacey, Andrew Tennenbaum, Daniel G. Berdugo, Carl J. De Vries, Benjamin Leser, Anne Long, Liam A. Greenlee, Joseph W. Patton, Steven B. Slegel, Isaac R. Witte

Small Satellite Conference

Summary: We successfully demonstrated on-board automated optical navigation (OpNav) in a lunar near rectilinear halo orbit (NRHO) using images of the Moon, the Earth, and other solar system bodies, advancing the technology readiness level (TRL) of the autonomous guidance navigation and control (autoNGC) OpNav capabilities from 5 to 7.

Development Of Spacecraft Digital Twins For Flight Software Maintenance, Robert Klar

Small Satellite Conference

This research project developed a digital twin—a virtual representation of a physical spacecraft, including its components, interfaces, and communications. By leveraging the digital twin’s ability to be replicated, modified, and distributed efficiently, the project enhances capabilities in design, analysis, and optimization. It significantly reduces risk, cost, and development schedules for flight software by minimizing dependencies on hardware resources. The project was executed as a collaborative effort between the Intelligent Systems Division (10) and Space Systems Division (05).

Development Of The Optical Components For Leo Satellite Communication Equipment, Tomoaki Toriya, Masaki Ogura, Yoshiriho Kamihama, Tomoaki Kiriyama, Katsuhiro Iwasaki, Takashi Kato

Small Satellite Conference

We supply highly reliable optical components such as Optical Isolators, Circulators, and Filters used in optical submarine repeaters. The Faraday rotator, a key device in optical Isolators, is manufactured from crystals, which also enhances the reliability of our products.

Last year we reported that our standard optical isolator YD-460 withstands the LEO satellite environment (radiation exposure, thermal vacuum cycling) and showed no laser-induced degradation up to 4.8 W at 1.48 µm (Raman pump).

In this work, the laser durability was evaluated with a high-power 1.55 µm source (max. 10 W), the wavelength actually used in satellite optical communication. Optical Isolator …

Optical Advantages In Using Extremely Stable Materials In Small Satellite Telescopes, Tony Hull, Jesse Bonfeld, Dustin Ruth, Florian Gollier, Janina Krieg, Thomas Westerhoff, Jacqueline Caraballo

Small Satellite Conference

Small-satellite telescopes experience continuous thermal transients from changing Sun and Earth view factors plus CONOPS → temperature gradients T(xi) → distort mirrors/metering if the material is sensitive to temperature.

Transients are partially mitigated by diffusivity, but only with uniform temperature changes. Orbital and CONOPS transients are not uniform → The architect must examine the material response to realistic transients and gradients.

Optimal optical performance is supported by appropriate passive material attributes!

Resilient Positioning And Resident Space Object Identification Using Miniaturized Star Tracker Hardware, Justin Kruger, Aviad Golan, Simone D’Amico

Small Satellite Conference

Robust alternative positioning, navigation, and timing (APNT) is a critical enabling capability in orbits where GNSS availability is degraded or denied.

Timely, accurate space situational awareness (SSA) knowledge is necessary for autonomy and safety in dynamic space environments.

Semi-Autonomous Reconnaissance Satellite: A Laboratory Demonstration Of End-To-End On-Board Mission Autonomy, Eran Shtoyerman, Raphael Cohen, Rafi Cohen, Oshri Fatkiev, Guy Zaidman, Gal Pinchas, Doron Shterman

Small Satellite Conference

Real-time satellite responsiveness to user requests from the field remains largely unavailable in current space systems. Such capabilities are typically restricted to low-altitude airborne platforms, primarily due to limited satellite communication bandwidth, intermittent ground contact, and the reliance on ground-based mission planning. Enabling true responsiveness requires a paradigm shift toward highly autonomous satellites, in which target selection, task execution, and mission planning are performed on board.

For example, a user may request a satellite to perform the following task in real-time: detect a ceiling tanker ship in a specified area, estimate its velocity from video data, and autonomously track the …