Digital Commons Network^™

Experimental Investigation Of "Structured Radio Wave" Propagation Using A Deployable Parabolic Reflector With A Uniform Circular Array, Makoto Ito, Tsukasa Funane, Yosuke Tanabe, Miki Yonehara, Hisatoshi Kimura, Keigo Nakamura, Yasuyuki Miyazaki, Satoshi Ikari, Shinichi Nakasuka, Ayako Torisaka, Koichi Watanabe

Small Satellite Conference

Poster presented at the 2026 Small Satellite Conference

Feasibility Of Failure-Resilient Swarm Formation Flying And Multi-Beam Coherent Apertures In 10000+ High-Density Satellite Swarms, Sumio Morioka

Small Satellite Conference

Direct-to-Device (D2D) communication links satellites directly to ground terminals without large antennas, supporting future Cyber-Physical Systems (CPS) and IoT. Our earlier work [1] showed that a formation of 10,000+ ultra-small satellites, as a coherent phased-array aperture, closes the D2D link budget. This study asks whether the formation can be operated within each satellite’s available power.

Lego®-Based Cubesats For Space Outreach, Stefan Brandle, Joshua Brown, Evan Smith, Drew Nye, Sydney Reddy, Twidy Kwae, Kaiya Grzesiak, Matthew Roderer, John Hetz

Small Satellite Conference

Taylor University Computer Science and Engineering is building a satellite having a LEGO®-robotics-based payload.

Mission Goals

• Have university students build a novel ELEO satellite
• Demonstrate viability of LEGO robotics electronics in space for short-term low-altitude missions
• Enhance space awareness by capturing the public's imagination through integral use of LEGO in an actual satellite
• Identify partners willing to provide advice and promote this project
• Create additional pathways for K-12 and university student participation in building satellites and satellite-related projects
• Support other space-education organizations through a high-visibility satellite project
• Continue space outreach efforts in the spirit of the ThinSat project
• ThinSat was …

Magnetic Balancing For Microvibration Reduction In Passive Magnetic Bearings For Smallsat Reaction Wheels, Deckers Niel, Baekeland Mante, Cuypers Cedric, Seiler Rene, Vandepitte Dirk, Delabie Tjorven

Small Satellite Conference

Reduction and mitigation of microvibrations constitutes a crucial field of interest in the research of spacecraft reaction wheels. This applies all the more so in small satellites, where even minimal sources of vibrations lead to imprecision of onboard instruments. To address this, magnetic bearings offer contactless support, and thus prevent several sources of microvibrations that exist in classical ball bearings, for instance the mechanical imperfections in rolling elements. The inherently low stiffness of magnetic bearings also significantly reduces the transmitted forces in reaction wheels. Another advantage of contactless support is its potential longer lifetime because of the absence …

Manufacturing Advances For Cost Effective, Large Aperture Monolithic Telescopes, T. Suratwala, R. Steele, G. Tham, J. Ross, J. Johnson, O. Herrera, M. Cahill, D. Bechtold, R. Bechtold, F. Ravizza, J. Cortes

Small Satellite Conference

Space has become increasingly more contested over the last decade, with the proliferation of satellites and space assets that require new levels of Space Domain Awareness (SDA). Space is often described by the US Government as the next warfighting domain. Control, understanding and dominance over this vast domain requires exquisite and complex optomechanical systems.

Lawrence Livermore National Lab’s Space Science and Security Program (SSSP) has developed unique monolithic optics, which are ground-aligned during manufacturing and are nearly athermal. These qualities greatly reduce the complexity of the optical payload when compared to legacy telescope designs. Monolithic optics deliver excellent imaging capabilities, …

Reacquiring Satellites After Unknown Maneuvers In Sensor Blind Spots: A Physics-Informed Behavioral Framework For Closed-Loop Custody Recovery, Naushad Rahman, Niha Agarwalla, Hardik Patel

Small Satellite Conference

Operational problem

After a maneuver during a sensor blind spot, a pre­-gap catalog state may no longer be operationally sufficient. A null look at GS2 must become evidence for where the object could be­ – and where to task next – before access expires.

Recap: A Study Of Downlink Optimization Methods Using Mms As A Template, Connor Firth, Conrad Schiff, Stephen Kreisler, Alexander Barrie

Small Satellite Conference

Motivations: MMS as a paradigm for downlink optimization

• MMS is a multi-agent mission requiring downlink optimization. ReCAP (Remote Coordination, Actuation, and Planning) assigns ground contacts using auctions.
• Five realistic downlink optimization cases are studied, and the amount of data downlinked is tracked to illustrate ReCAP’s ability to optimize for different criteria.
• ReCAP demonstrates value as a real-time, onboard downlink optimization tool.

Scaling Space Power For Small Satellites: Why Manufacturing Capacity Now Matters As Much As Efficiency, Mpower Technology

Small Satellite Conference

Poster presented at the 2026 Small Satellite Conference

Swap Optimized, Optical Communications Terminal Concepts For Lunar, Mars, Jupiter And Neptune Solar System Missions, Keith G. Petrillo, Mark Storm

Small Satellite Conference

Trinity: Fibertek's Lunar terminal

• Trinity provides a good basis for providing a low SWaP terminal for deep space communications
• Leveraging Trinity and high-power LiDAR lasers enables communications to 32AU
• Appropriate for deep space small satellites

University Ground-Station-As-A-Service: Promoting Space It Education And University Collaboration, Daniel Freburg, Will Lewis, Charles Edamala, Phoenix Alpine

Small Satellite Conference

Poster presented at the 2026 Small Satellite Conference

Validation Of Steering Law For A 4-Variable-Speed Single-Gimbal Control Moment Gyroscope Pyramid Cluster Via Spherical Air-Bearing Testbed, Kai Kuo Liao, Chih Ta Wu, Jen Hao Cheng, Po Hsun Yen, Shang Jung Lee

Small Satellite Conference

• VSCMG: wheel speed is commanded with gimbal rate — the extra DOF lets the cluster slide past singularities.
• HIL: a Helmholtz cage replays the on-orbit field and a solar simulator sets the Sun line.
• This work: HIL validation of a weighted-pseudoinverse steering law, 4-unit pyramid.

Reinventing The Reaction Wheel, I. Penchev, N. Andrada

Small Satellite Conference

Rapid growth of microsatellite missions and constellations in the 10–600 kg class is increasing the demand for scalable, high-performance attitude control solutions. Advanced payloads for Earth Observation, Synthetic Aperture Radar, complex science missions, and geolocation systems require:

• Low microvibration performance
• Precise pointing stability
• High angular momentum capacity
• Reliable across mission lifetimes

Space Inventor is qualifying a new generation of 1 Nms-class reaction wheels optimized for microsatellite platforms. The innovative mechanical design, combined with manufacturing-aware system design, unlocks expanded performance and mission opportunities for microsatellites and constellations.

Zerodur®: Tailoring Opportunities For Your Thermal Environment And Second-Order Optimum Factors, Jesse Bonfeld, Dustin Ruth, Florian Gollier, Janina Krieg, Thomas Westerhoff, Tony Hull, Jacqueline Caraballo

Small Satellite Conference

Poster Presented at the 2026 Small Satellite Conference

A Comprehensive Review Of Perovskite Materials For Electronic Device Applications, Md Abdul Kuddus Sheikh, Md Shazarul Islam, Daniel Drane, Hasina Huq

Electrical and Computer Engineering Faculty Publications

Perovskite materials have gained remarkable attention as promising candidates for next-generation electronic and optoelectronic devices owing to their outstanding optical absorption, high carrier mobility, tunable bandgap, and cost-effective fabrication. This review explores the recent progress and future potential of perovskite materials across different categories, including organic-inorganic hybrid perovskites, oxide perovskites, and all-inorganic perovskites, emphasizing their structural diversity and electronic tunability. Special consideration is given to various dimensional perovskites (3D, 2D, 1D, and 0D), where reduced dimensionality provides enhanced stability and unique quantum confinement effects advantageous for device performance. The rapid development of lead-free perovskites is also discussed as an environmentally …

Publication Analysis Of Aslib Journal Of Information Management From 2016 To 2025, Sumit Karmahapatra, Akshaya Kumar Nayak

Library Philosophy and Practice (e-journal)

The current study presents a bibliometric analysis of the ASLIB Journal of Information Management (AJIM) from 2016 to 2025. Bibliographic data sourced from Scopus and VOSviewer was used for network visualization. 599 documents published in AJIM over the period were identified, with contributions from 1,749 authors residing in 69 countries and citations totalling 8,606. The output rate increased dramatically during the specified period, rising from 40 publications in 2016 to a peak of 140 in 2025. At the same time, the average citations per document (ACPD) over the specified period was estimated at 14.37, varying from 26.37 in 2018 to …

Nasa’S Ecostress Satellite Reveals Widespread Midday Depression In Ecosystem Evapotranspiration, Jingyi Bu, Jingfeng Xiao, Joshua B. Fisher, Yiqi Luo

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Plants often exhibit a midday depression in water use (i.e., transpiration), reflecting a constraint on their ability to sustain maximum water transport, which may occur at the cost of reduced photosynthesis. Eddy covariance observations and geostationary satellites cannot quantify this widespread phenomenon globally while resolving fine-scale spatial variability. Using evapotranspiration measurements from the ECOsystem Spaceborne Thermal Radiometer Experiment on Space Station (ECOSTRESS) and machine learning, we quantify the global distribution of midday depression in evapotranspiration. Midday depression primarily occurs during peak-growing seasons in temperate zones and dry periods in the tropics, with a morning shift of the peak evapotranspiration time …

Studying What Matters: South Texas Community-Driven Dementia Research Priorities, Sara S. Masoud, Juana Escareño, Belinda Flores, Byeong Yeob Choi, Karla Daniela Lopez Lorenzo, Shanae L. Rhodes, Quetzaly Zenil, Carole L. White

School of Medicine Publications

South Texas has among the highest dementia prevalence rates in the United States, yet communities in the region remain consistently underrepresented in dementia research. Aligning research studies with what matters to communities most impacted by dementia is critical in addressing the crisis of research exclusion. This participatory study sought to identify community-driven dementia research priorities grounded in the experiences and needs of South Texas residents impacted by dementia. A two-year community-engaged study was conducted in partnership with a Community Council composed of individuals living with dementia, family caregivers, community health workers, and community-serving professionals. A plática program model was co-developed …

Effects Of Infill Pattern And Infill Density On The Flexural Properties Of Markforged Onyx, Jonathon Tran, Rachel Shubella, Alexander Hunt

Mechanical and Materials Engineering Faculty Publications and Presentations

Fused Filament Fabrication (FFF) enables the production of lightweight polymer composite components with complex geometries; however, the effects of infill geometry on printing accuracy and mechanical behavior of unreinforced Markforged Onyx remains insufficiently understood. This parametric study investigates the influence of four infill patterns (gyroid, hexagonal, rectangular, and triangular) and three infill densities (30%, 40%, and 50%) on the post-print mass, dimensional accuracy, microstructure and flexural properties of Onyx specimens fabricated using a Markforged Mark Two printer. Experimental measurements were compared with Eiger slicing software predictions, and geometry- and mass-based area moment of inertia correction methods were evaluated. The results …

Timofey V V. Usa

2026 Decisions

USDC for the Eastern District of Pennsylvania

Eric Harnett V. Cdc

2026 Decisions

USDC for the District of New Jersey

Jose Mejia-Henriquez V. Attorney General United States Of America

2026 Decisions

Agency

Optimizing Heart Failure-Specific Disease Management Programs And Patient Care In Saudi Arabia: A Saudi Heart Association Position Statement, Abeer Bakhsh, Fakhr Al Ayoubi, Fayez Elshaer, Hanan B. Albackr, Hanin A. Bogari, Ibrahim Jelaidan, Ismail Raslan, Kamal Al Ghalayini, Maryam Alqaseer, Waleed Alhabeeb

Journal of the Saudi Heart Association

Background: Heart failure (HF) represents a major and growing health burden in Saudi Arabia, with high morbidity, frequent hospitalizations, and substantial system-level costs. Despite advances in guideline-directed medical therapy, gaps in diagnosis, care coordination, and longitudinal management persist. Structured, multidisciplinary heart failure–specific disease management programs (HF-DMPs) have been shown to improve outcomes and healthcare efficiency, yet their implementation remains inconsistent across the Kingdom.

Methods: The Saudi Heart Association (SHA) convened a multidisciplinary expert panel to develop a national position statement on HF-DMPs. Recommendations were formulated through structured consensus, informed by a comprehensive review of international guidelines, clinical trials, real-world evidence, …

Administrative Appeal Decision - Turcsan, Andras (2026-08-04)

Parole Administrative Appeal Decisions

No abstract provided.

Administrative Appeal Decision - Gibson, Gee (2026-08-18)

Parole Administrative Appeal Decisions

No abstract provided.

Dynaband: Context-Aware Dynamic Band Selection For Onboard Hyperspectral Processing In Small Satellites, Rishigesh Jayananth, Brasen Sheeh

Small Satellite Conference

Hyperspectral small satellites now collect far more data than they can return to the ground. A single acquisition spans tens to hundreds of spectral bands, yet the downlink window on one pass carries only a fraction of it, so operators are forced to drop scenes, bin bands coarsely, or store data that never reaches the ground. Much of this waste is avoidable. When the task is known before the spacecraft images, whether to map water, monitor vegetation, or pick out a mineral signature, only a handful of bands actually carry the answer; the rest is paid for in downlink and …

Leveraging Persistent L-Band Leo-To-Geo Relays For The Orchestration Of High-Bandwidth Optical Inter-Satellite Links, Jonathan Maier, Skylar A. Cox

Small Satellite Conference

As the already tremendous demand for data transfer in Low Earth Orbit (LEO) grows, Free-Space Optical (FSO) communication has emerged as a critical capability due to high data rates and inherent resilience attributes. However, the operational complexity of FSO, specifically the Pointing, Acquisition, and Tracking (PAT) process, requires significant operational planning. The narrow beamwidth of optical terminals requires precise spatial coordination, resulting in latency during link establishment, heavy reliance on scheduled ground-based commanding, and an impediment to agile, responsive, and ad hoc operations.

This paper presents a novel orchestration architecture utilizing Viasat’s L-band space relay network as a persistent, always-on …

Evaluating Performance Of Hardware-Accelerated Vessel Detection Algorithms, Michael Tietz, John Warner, Quinton Davidson, Douglas Carssow

Small Satellite Conference

Earth observing satellites contribute to the monitoring of maritime activity by enabling large-scale coverage of open water. For example, spacecraft data can be used to monitor and combat Illegal, Unreported, and Unregulated (IUU) fishing that occurs in coastal and international waters across the globe. However, information latencies limit the utility of space-based sensors for operational users who need real-time situational awareness. These limitations are especially pronounced for small spacecraft with limited power generation and downlink capabilities. In recent years, the devices and tools that enable edge computing and near real-time downlink from small spacecraft have improved substantially. Equipped with these …

Metadata-Conditioned Dark-Frame Modelling And Hsdr-Scanfusion Denoising: A Physics-Informed Independent Tool For Low-Cost Hyperspectral Small-Satellite Calibration, Nooh Adnan, Kyaw Thiha, Raffael Gil Dela Cruz, Li Cheng Zheng, Faijul Amin, Areeba Khan, Sameha Tasnim, Sung Jegal, Yunhan Bao, Iliya Shofman

Small Satellite Conference

Hyperspectral imaging in the shortwave-infrared spectrum is valuable for orbital Earth observation, but its use on low-cost, resource-constrained small satellites is limited by thermally dependent dark current, fixed-pattern noise, and intermittent access to matched calibration frames. Traditional mitigation through active cooling, shutters, or frequent dark-frame acquisition can be difficult to accommodate within small-satellite mass, power, volume, and operations budgets. This paper presents a physics-informed independent calibration tool that reconstructs condition-matched dark response from acquisition metadata rather than relying on hardware-heavy calibration at every operating point. The framework combines a stochastic dark-noise simulator, a metadata-conditioned neural dark operator that predicts spectral-spatial …

Design And Performance Of The Active Thermal Architecture Technology For The Upcoming Acmes Mission, Lucas Anderson, Charles Swenson, Miguel Nunes, Robert Wright

Small Satellite Conference

This paper will discuss the basic design, fabrication, and experimental validation plan of the Active Thermal Architecture (ATA), a novel Active Thermal Control (ATC) technology that will be demonstrated on the upcoming Active Cooling for Multispectral Earth Sensors (ACMES) mission. The ATA is an integrated single-phase mechanically pumped fluid-loop (MPFL) thermal control system developed for high-power small-satellite applications. The ATA is constructed using 3D Ultrasonic Additive Manufacturing to co-fabricate the internal thermal transport channels and structural members, enabling direct integration of heat exchangers and fluid pathways within primary spacecraft components. The resulting architecture reduces mechanical interfaces, improves thermal transfer, and …

Development Of Wavelength-Division-Multiplexed All-Optical Relays For Low-Earth Orbit Free-Space Optical Communication Networks, Travis Jones, Justin Cook, Chris Krush, Doruk Engin, Keith G. Petrillo

Small Satellite Conference

In this work, we designed, built, and tested an all-optical relay amplifier to enable a space-based all-optical backbone for laser communications networks. The design sought to optimize links for LEO-based networks incorporating appropriate span lengths and optical terminal specifications. We incorporate an add-drop multiplexer for rerouting signals and designed the system to be flexible over span lengths with a nominal range of 1,800 km. We performed several tests of the nominally 60 dB gain amplifier to assess link dynamics unique to free space optical communications (FSOC) including the impact of pointing jitter, nonlinearities, gain flattening, and wide-band filters on an …