Digital Commons Network^™

Salvaging Detection Of Early-Stage Ovarian Malignancies When Ca125 Is Not Informative, Charles J. Dunton, Megan L. Hutchcraft, Rowan G. Bullock, Lesley E. Northrop, Frederick R. Ueland

Markey Cancer Center Faculty Publications

Background: Ovarian cancer is the deadliest gynecologic cancer, with no recommended screening test to assist with early detection. Cancer antigen 125 (CA125) is a serum biomarker commonly used by clinicians to assess preoperative cancer risk, but it underperforms in premenopausal women, early-stage malignancies, and several histologic subtypes. OVA1 is a multivariate index assay that combines CA125 and four other serum proteins to assess the malignant risk of an adnexal mass. Objective: To evaluate the performance of OVA1 in a cohort of patients with low-risk serum CA125 values. Study Design: We analyzed patient data from previous collections (N = 2305, prevalence …

Mindsets In Legal Education, Victor D. Quintanilla, Sam Erman

Journal of Legal Education

No abstract provided.

Medical Device Artificial Intelligence: The New Tort Frontier, Charlotte A. Tschider

BYU Law Review

The medical device industry and new technology start-ups have dramatically increased investment in artificial intelligence (AI) applications, including diagnostic tools and AI-enabled devices. These technologies have been positioned to reduce climbing health costs while simultaneously improving health outcomes. Technologies like AI-enabled surgical robots, AI-enabled insulin pumps, and cancer detection applications hold tremendous promise, yet without appropriate oversight, they will likely pose major safety issues. While preventative safety measures may reduce risk to patients using these technologies, effective regulatory-tort regimes also permit recovery when preventative solutions are insufficient.

The Food and Drug Administration (FDA), the administrative agency responsible for overseeing the …

Strict Liability For The Information Age, Kevin Alden

BYU Law Review

No abstract provided.

The Challenges Of Implementing Action Research In A Divided Context: A Field Account, Olubunmi Damilola Akande

The Qualitative Report

Action research is mainly concerned with the entrenchment of social change through social interventions that involves the beneficiaries as key participators. The study documents the experience of the researcher in conducting action themed research in two adversarial communities in North-Central Nigeria. The core goals of the study are to draw attention to the usefulness of this approach for peacebuilding research and to also shed light on some of the complexities associated with this kind of research. A research diary was employed to document events and reflections as they unfolded during the fieldwork. A combination of a harsh social climate and …

Life Paths To Leading Systems-Level Change: Higher Education’S Pitfalls And Potential, Roslynn Brain Mccann, Kaitlyn Spangler, Andrew Millison

Environment and Society Faculty Publications

Global protests calling for accelerated climate change action, social justice, and racial equity have been shifting long- standing conversations and policies from local to national scales. Yet many activists can become psychologically drained by the frustration and loss of hope in fighting against structural oppression. This study was comprised of semi-structured qualitative interviews spanning across the United States with 25 leaders and practitioners in permaculture design, a solutions-based ecological design framework to enact positive, systems-level environmental and social change. The objective was to better understand their life paths toward such work. The research showed that higher education is not adequately …

Discovery Of A New Gamma-Ray Source, Lhaaso J0341+5258, With Emission Up To 200 Tev, Zhen Cao, F. Aharonian, Q. An, Axikegu, L. X. Bai, Y. X. Bai, Y. W. Bao, D. Bastieri, X. J. Bi, Y. J. Bi, H. Cai, J. T. Cai, Zhe Cao, J. Chang, J. F. Chang, B. M. Chen, E. S. Chen, J. Chen, Liang Chen, Liang Chen, Long Chen, M. J. Chen, M. L. Chen, Q. H. Chen, S. H. Chen, S. Z. Chen, T. L. Chen, X. L. Chen, Y. Chen, N. Cheng, Y. D. Cheng, S. W. Cui, X. H. Cui, Y. D. Cui, B. D'Ettore Piazzoli, B. Z. Dai, H. L. Dai, Z. G. Dai, Danzen Gluobu, D. Della Volpe, X. J. Dong, K. K. Duan, J. H. Fan, Y. Z. Fan, Z. X. Fan, J. Fang, K. Fang, C. F. Feng, L. Feng, S. H. Feng, Y. L. Feng, B. Gao, C. D. Gao, L. Q. Gao, Q. Gao, W. Gao, M. M. Ge, L. S. Geng, G. H. Gong, Q. B. Gou, M. H. Gu, F. L. Guo, J. G. Guo, X. L. Guo, Y. Q. Guo, Y. Y. Guo, Y. A. Han, H. H. He, H. N. He, J. C. He, S. L. He, X. B. He, Y. He, M. Heller, Y. K. Hor, C. Hou, H. B. Hu, S. Hu, S. C. Hu, X. J. Hu, D. H. Huang, Q. L. Huang, W. H. Huang, X. T. Huang, X. Y. Huang, Z. C. Huang, F. Ji, X. L. Ji, H. Y. Jia, K. Jiang, Z. J. Jiang, C. Jin, T. Ke, D. Kuleshov, K. Levochkin, B. B. Li, Cheng Li, Cong Li, F. Li, H. B. Li, H. C. Li, H. Y. Li, J. Li, K. Li, W. L. Li, X. R. Li, Xin Li, Xin Li, Y. Li, Y. Z. Li, Zhe Li, Zhuo Li, E. W. Liang, Y. F. Liang, S. J. Lin, B. Liu, C. Liu, D. Liu, H. Liu, H. D. Liu, J. Liu, J. L. Liu, J. S. Liu, J. Y. Liu, M. Y. Liu, R. Y. Liu, S. M. Liu, W. Liu, Y. Liu, Y. N. Liu, Z. X. Liu, W. J. Long, R. Lu, H. K. Lv, B. Q. Ma, L. L. Ma, X. H. Ma, J. R. Mao, A. Masood, Z. Min, W. Mitthumsiri, T. Montaruli, Y. C. Nan, B. Y. Pang, P. Pattarakijwanich, Z. Y. Pei, M. Y. Qi, Y. Q. Qi, B. Q. Qiao, J. J. Qin, D. Ruffolo, V. Rulev, A. Saiz, L. Shao, O. Shchegolev, X. D. Sheng, J. Y. Shi, H. C. Song, Yu. V. Stenkin, V. Stepanov, Y. Su, Q. N. Sun, X. N. Sun, Z. B. Sun, P. H. T. Tam, Z. B. Tang, W. W. Tian, B. D. Wang, C. Wang, H. Wang, H. G. Wang, J. C. Wang, J. S. Wang, L. P. Wang, L. Y. Wang, R. N. Wang, W. Wang, W. Wang, X. G. Wang, Xiaojie Wang, X. Y. Wang, Y. Wang, Y. D. Wang, Y. J. Wang, Y. P. Wang, Z. H. Wang, Z. X. Wang, Zhen Wang, Zheng Wang, D. M. Wei, J. J. Wei, Y. J. Wei, T. Wen, C. Y. Wu, H. R. Wu, S. Wu, W. X. Wu, X. F. Wu, S. Q. Xi, J. Xia, J. J. Xia, G. M. Xiang, D. X. Xiao, G. Xiao, H. B. Xiao, G. G. Xin, Y. L. Xin, Y. Xing, D. L. Xu, R. X. Xu, L. Xue, D. H. Yan, J. Z. Yan, C. W. Yang, F. F. Yang, J. Y. Yang, L. L. Yang, M. J. Yang, R. Z. Yang, S. B. Yang, Y. H. Yao, Z. G. Yao, Y. M. Ye, L. Q. Yin, N. Yin, X. H. You, Z. Y. You, Y. H. Yu, Q. Yuan, H. D. Zeng, T. X. Zeng, W. Zeng, Z. K. Zeng, M. Zha, X. X. Zha, B. B. Zhang, H. M. Zhang, H. Y. Zhang, J. L. Zhang, J. W. Zhang, L. X. Zhang, Li Zhang, Lu Zhang, P. F. Zhang, P. P. Zhang, R. Zhang, S. R. Zhang, S. S. Zhang, X. Zhang, X. P. Zhang, Y. F. Zhang, Y. L. Zhang, Yi Zhang, Yong Zhang, B. Zhao, J. Zhao, L. Zhao, L. Z. Zhao, S. P. Zhao, F. Zheng, Y. Zheng, B. Zhou, H. Zhou, J. N. Zhou, P. Zhou, R. Zhou, X. X. Zhou, C. G. Zhu, F. R. Zhu, H. Zhu, K. J. Zhu, X. Zuo

Physics Faculty Research & Creative Works

We report the discovery of a new unidentified extended γ-ray source in the Galactic plane named LHAASO J0341+5258 with a pretrial significance of 8.2 standard deviations above 25 TeV. The best-fit position is R.A. = 55. 34 0. 11 and decl. = 52. 97 0. 07. The angular size of LHAASO J0341+5258 is 0. 29 0. 06stat 0. 02sys. The flux above 25 TeV is about 20% of the flux of the Crab Nebula. Although a power-law fit of the spectrum from 10 to 200 TeV with the photon index α = 2.98 0.19stat 0.02sys is not excluded, the LHAASO …

Gaiety, April 1976

Gaiety, 1975-1977

Editor-in-Chief: Gary Poe. News Editor: Fred Harris. Staff Writers: Martha Brummett, Buddy Haynes. Staff Artist: Mary Jo Cowart. Jackson (TN) Correspondent: Wayne Maness.

Special thanks to Rhodes College and the Paul Barret Jr. Library for providing initial scanning of this collection.

Bradley-Glenn Using Extra Year To His Advantage, Georgia Southern University

Athletics: News & Publications

• Bradley-Glenn Using Extra Year to his Advantage

A Single Cell Pair Mechanical Interrogation Platform To Study Cell–Cell Adhesion Mechanics, Amir Monemianesfahani

Department of Mechanical and Materials Engineering: Dissertations, Theses, and Student Research

Cell-cell adhesion complexes are macromolecular adhesive organelles that integrate cells into tissues. Perturbations of the cell-cell adhesion structure or relatedmechanotransduction pathways lead to pathological conditions such as skin and heart diseases, arthritis, and cancer. Mechanical stretching has been used to stimulate the mechanotransduction process originating from the cell-cell adhesion and cell-extracellular matrix (ECM) complexes. The current techniques, however, have limitations on their ability to measure the cell-cell adhesion force directly and quantitatively. These methods use a monolayer of cells, which makes it impossible to quantify the forces within a single cell-cell adhesion complex. Other methods using single cells or cell …

On A New Generalized Beta Function Defined By The Generalized Wright Function And Its Applications.Pdf, Umar Muhammad Abubakar, Saroj Patel

Malaysian Journal of Computing (MJoC)

Various extensions of classical gamma, beta, Gauss hypergeometric and confluent hypergeometric functions have been proposed recently by many researchers. In this paper, further generalized extended beta function with some of its properties like summation formulas, Integral representations, connections with other special functions such as incomplete gamma, classical beta, classical Wright, hypergeometric, error, Fox-H, Fox-Wright, Meijer-G functions are obtained. Beta distribution together with-it corresponding moment, mean, variance, moment generating function and cumulative distribution are also presented. Moreover, the generalized beta function is used to generalized classical and other related extended Gauss, Kumar confluent, Appell’s and Lauricella’s hypergeometric functions with their integral …

Machine Learning Techniques For Early Heart Failure Prediction.Pdf, Nur Shahellin Mansur Huang, Zaidah Ibrahim, Norizan Mat Diah

Malaysian Journal of Computing (MJoC)

This paper discusses the performance of four popular machine learning techniques for predicting heart failure using a publicly available dataset from kaggle.com, which are Random Forest (RF), Support Vector Machine (SVM), Naive Bayes (NB), and Logistic Regression (LR). They were selected due to their good performance in medical-related applications. Heart failure is a common public health problem, and there is a need to improve the management of heart failure cases to increase the survival rate. The vast amount of medical data related to heart failure and the availability of powerful computing devices allow researchers to conduct more experiments. The performance …

An Assessment Of Journal Quality Indicators: A Comparative Study Of Selected Medical Journals, Mamatha V, Dr Keshava

Library Philosophy and Practice (e-journal)

The purpose of the study was to assess the correlation between four bibliometric indicators (Impact Factor-IF, Eigenfactor Score-ES, SCImago Journal Rank-SJR, and H5 index) of typical online medical journals were selected from the medical group. Findings from the study evident that in accordance with Pearson’s (r) statistical correlation there is a high significance between four indicators and as per Spearman’s rho statistical correlation there is an association between the three indicators i.e. JIF, SJR, and H5. The above-mentioned indicators are correlated with one a different and it is chiefly true for medical journals when used as communal indicators to estimate …

Darkcarb: An Innovative Approach To Infrared Imaging, Andrew Haslehurst, Rachel Bird, Trevor Wood, Calem Whiting, Bena Mero, Harbinder Rana, Matt Price, Camilla Weiss, Diego Angarita-James, James Bell, Tasos Matheopoulos, John Gliby, Martin Sweeting

Small Satellite Conference

DarkCarb is a pioneering Earth observation (EO) satellite, under development at SSTL, designed to acquire high resolution Mid Wave Infrared (MWIR) imagery and video from low Earth orbit. The mission will set a precedent in IR performance from a small and capable satellite platform while maintaining the SSTL cost effective approach thereby enabling a spacecraft price which makes building constellations, capable of delivering rapid re-visit and wide area coverage, an attractive and worthwhile commercial investment. The DarkCarb satellite features an innovative low mass and volume MWIR imager which, when combined with the implementation of novel image enhancement algorithms, will achieve …

Dynamically Controlling Image Integration Onboard The Star-Planet Activity Research Cubesat (Sparcs), Tahina Ramiaramanantsoa, Judd Bowman, Evgenya Shkolnik, R.O. Parke Loyd, David R. Ardila, Travis Barman, Christophe Basset, Matthew Beasley, Samuel Cheng, Johnathan Gamaunt, Varoujan Gorjian, Daniel Jacobs, Logan Jensen, April Jewell, Mary Knapp, Joe Llama, Victoria Meadows, Shouleh Nikzad, Sarah Peacock, Paul Scowen, Mark Swain

Small Satellite Conference

The Star-Planet Activity Research CubeSat (SPARCS) is a 6U CubeSat astronomical observatory underdevelopment and will be entirely dedicated to the photometric monitoring of the flaring activity of M dwarfs at near-UV (258 nm – 308 nm) and far-UV (153 nm–171 nm) wavelengths. The SPARCS science pay load is composed of a 9-cm telescope that projects a 40’ field-of-view onto two UV-optimized delta-doped charge-coupled devices (CCDs), which are controlled by a dedicated payload processor board. Given that M dwarf flares in the UV are expected to be capable of reaching amplitudes ∼14,000 times above their quiescent flux, with durations that …

Mission Concept For Demonstrating Small-Spacecraft True Anomaly Estimation Using Millisecond X-Ray Pulsars, Anant Kandala, Aashka Oza, Bharath Saiguhan, Shreya Mishra, Priyadarshnam Hari, Samir Mandal, Harsh Simha

Small Satellite Conference

Navigation based on X-ray pulsars was first suggested in 1981 for deep space navigation as an alternative to the conventional Deep Space Network (DSN) which is inaccurate at large distances from the Earth. This idea was recently demonstrated using the NICER/SEXTANT instrument onboard the ISS. X-ray pulsar-based navigation is of of great interest as it eliminates the reliance on Earth-based systems, and is yet to be implemented as an autonomous navigation system for deep space missions. For the purpose of navigation, X-ray millisecond pulsars are the most appropriate celestial sources. They emit unique, stable and periodic radiation that exhibits high …

A Compact Five-Channel Vlf Wave Receiver For Cubesat Missions, Riley A. Reid, Robert A. Marshall, Scott E. Palo, David M. Malaspina

Small Satellite Conference

Very low frequency (VLF) waves play an important role in controlling the evolution of energetic electron distributions in near-Earth space. This paper describes the design of a VLF receiver for the Climatology of Anthropogenic and Natural VLF Wave Activity in Space (CANVAS) CubeSat mission, designed to make continuous observations of VLF waves in low-Earth orbit originating from lightning and ground-based transmitters. The CANVAS VLF receiver will observe five components of VLF waves in the 0.3–40 kHz frequency range, using three orthogonal magnetic search coils deployed on the end of a 1-meter carbon fiber boom and four deployable electric field antennas …

The Pandora Smallsat: Multiwavelength Characterization Of Exoplanets And Their Host Stars, Elisa V. Quintana, Knicole D. Colón, Greg Mosby, Joshua E. Schlieder, Pete Supsinskas, Jordan Karburn, Jessie L. Dotson, Thomas P. Greene, Christina Hedges, Dániel Apai, Thomas Barclay, Jessie L. Christiansen, Néctor Espinoza, Susan E. Mullally, Emily A. Gilbert, Kelsey Hoffman, Veselin B. Kostov, Nikole K. Lewis, Trevor O. Foote, James Mason, Allison Youngblood, Brett Morris, Elizabeth R. Newton, Joshua Pepper, Benjamin V. Rackham, Jason F. Rowe, Kevin Stevenson

Small Satellite Conference

Pandora is a SmallSat mission concept, selected as part of NASA’s Astrophysics Pioneers Program, designed to study the atmospheres of exoplanets using transmission spectroscopy. Transmission spectroscopy of transiting exoplanets provides our best opportunity to identify the makeup of planetary atmospheres in the coming decade. Stellar brightness variations due to star spots, however, can seep into these measurements and contaminate the observed spectra. Pandora is designed to disentangle star and planet signals in transmission spectra and reliably characterize the planetary atmospheres. Pandora will collect long-duration photometric observations with a visible-light channel, and simultaneous spectra with a near-IR channel, where water is …

Technical Challenges For Small Sar Satellites With High Performance, Hirobumi Saito, Kosei Ishimura, Jiro Hirokawa, Takashi Tomura, Koichi Ijichi, Koji Tanaka

Small Satellite Conference

We have developed a small SAR sensor, Micro X-SAR, compatible with 130 kg small satellite. It is capable of 3-meter resolution SAR image acquisition in strip-map mode and 1-meter resolution SAR image acquisition in sliding spotlight mode. This small SAR sensor was successfully demonstrated in orbit by a private company in 2021, Feb. This paper describes the next technical challenge of small SAR satellite with higher performance. We discuss on several types of SAR mission such as high resolution missions, wide swath missions, and constellation missions. Then we describe the present status of technical challenges to wideband, high power, and …

The Ezie Way To Measure The Ionospheric Electrojets With A Three-Cubesat Constellation, Jeng-Hwa Yee, Jesper Gjerloev, Rafael Perez, William H. Swartz, Sidharth Misra, Olagappan Chidambaram, Christopher Ruf

Small Satellite Conference

A recently selected NASA heliophysics mission of opportunity, the Electrojet Zeeman Imaging Explorer (EZIE), will study the electric currents that play a crucial role in the interactions between Earth and the surrounding magnetosphere. The aurora is a spectacular manifestation of these interactions. EZIE consists of three 6U CubeSats flying in a pearls-on-a-string orbit configuration, each carrying a Microwave Electrojet Magnetogram (MEM) instrument. Four beams on each satellite measure polarimetric radiances that contain the magnetic signatures of the intense currents in ionospheric plasmas (electrojets) based on the Zeeman splitting of molecular oxygen thermal emissions. This novel measurement technique allows for the …

Liciacube Mission: The Fastest Fly-By Ever Done By A Cubesat, V. Marchese, N. R. Benigno, S. Simonetti, E. Fazzoletto, F. Miglioretti, V. Di Tana, Simone Pirrotta, Marilena Amoroso, Elizabetta Dotto, Vincenzo Della Corte

Small Satellite Conference

As SmallSats are gathering an ever-increasing importance for all types of space missions, they are asked more often to operate in harshest environments and to complete the most complex tasks. One of these demanding technical challenges arises in the frame of the planetary defense. Space missions towards asteroids have garnered the due attention in recent years and, in this regard, NASA has developed the Double Asteroid Redirection Test (DART) mission, in which the Italy will lend its contribution. While DART acts as a kinetic impactor deflecting the orbit of the asteroid Dimorphos, the moon of the targeted binary system Didymos, …

The Methanesat Mission, Reuben R. Rohrschneider, Steven Wofsy, Jonathan E. Franklin, Joshua Benmergui, Juancarlos Soto, Spencer B. Davis

Small Satellite Conference

The MethaneSAT mission is expected to launch in Q4 of 2022 with a primary goal of providing systematic monitoring of methane emissions from regions accounting for more than 80% of global oil and gas production. High precision measurements from the sensor will allow quantification and mapping of essentially all methane emissions from these regions and identify the location of major point sources and quantify those methane emissions. MethaneSAT has a wide observing swath (~200km), high spatial resolution (~100m x400m), low detection threshold (~2pbb @ 1.5 km²), and targeting capability up to 40° off nadir, enabling it to fill …

Imaging X-Ray Polarimeter Explorer Systems Engineering Approach And Implementation, William D. Deininger, William Kalinowski, Grant Hibbard, Christopher Boree, Kevin Ferrant, Tyler Maddox, Colin Peterson, Benjamin Garelick, William Painter, Scott Mitchell, Spencer Antoniak, Ron Mize, Allyn Tennant, Brian Ramsey, Amy Walden, Alessio Trois, Michele Pinchera, Ettore Del Monte, Darren Osborne

Small Satellite Conference

The Imaging X-ray Polarimetry Explorer (IXPE) is a NASA Small Explorer x-ray astrophysics mission being implemented by a geographically dispersed team. Each IXPE partner provides unique capabilities and experience which are utilized to design, build and launch the IXPE observator. A rigorous and iterative systems engineering approach is essential to ensuring the successful realization of reliable and cost effective IXPE mission system. The IXPE collaboration and observatory complexity provide both unique challenges and advantages for project systems engineering. The project uses established and tailored systems engineering (SE) methods and teaming approaches to achieve the IXPE mission goals. The IXPE systems …

The World’S First Commercial Debris Removal Demonstration Mission, Gene Fujii, Seita Iizuka, Carolyn Belle, Mark Muktoyuk

Small Satellite Conference

Since the launch of Sputnik in 1957, the orbital environment has become increasingly congested. Of the 5,550 satellites currently orbiting the Earth, only 2,700 are operational, and they are joined in orbit by millions of objects of space debris. Astroscale has developed a robotic servicing spacecraft and suite of technology to address this challenge by removing debris and defunct satellites from orbit; the smallsat servicer mission End-of-Life Services by Astroscale-demonstration (ELSA-d) launched on March 22, 2021, will demonstrate these new and innovative space debris docking and removal technologies on orbit. The ELSA-d mission includes both a smallsat servicer …

Hyti: Thermal Infrared Spectroscopy From A 6u Platform, Robert Wright, Paul Lucey, Luke Flynn, Chiara Ferrari-Wong, Andrea Gabrieli, Miguel Nunes, Sarath Gunapala, David Ting, Sir Rafol, Alexander Soibel, Thomas George

Small Satellite Conference

The HyTI (Hyperspectral Thermal Imager) mission, funded by NASA’s Earth Science Technology Office InVEST (In-Space Validation of Earth Science Technologies) program, will demonstrate how high spectral and spatial long-wave infrared image data can be acquired from a 6U CubeSat platform. The mission will use a spatially modulated interferometric imaging technique to produce spectro-radiometrically calibrated image cubes, with 25 channels between 8-10.7 μm, at 13 cm^-1 resolution), at a ground sample distance of ~60 m. The HyTI performance model indicates narrow band NE∆Ts of < 0.3 K. The small form factor of HyTI is made possible via the use of a no-moving-parts Fabry-Perot interferometer, and JPL’s cryogenically-cooled HOT-BIRD FPA technology. Launch is scheduled for no earlier than Fall 2021. The value of HyTI to Earth scientists will be demonstrated via on-board processing of the raw instrument data to generate L1 and L2 products, with a focus on rapid delivery of data regarding volcanic degassing, land surface temperature, and precision agriculture metrics.

In this presentation we will provide an overview of the HyTI measurement approach, the onboard data …

Pathfinding Ussf Mosa Adoption Utilizing Ring-Based And Small Spacecraft, Heather B. Bogstie, Stanley D. Straight

Small Satellite Conference

The U.S. Space Force’s Space and Missile Systems Center’s (SMC) Directorate of Innovation and Prototyping is evolving the concept of medium and small class combat bus to provide on-orbit warfighter and systems support and advance the open systems architecture. We begin with a Long-Duration Propulsive ESPA ring with six ports for multiple small hosted and/or separable satellites and prototypes (aka SMC’s “Freight Train to Space”). By adding communication, open processing, maneuverability, and refueling options, a ring that was once “just hardware” becomes an outpost in GEO and an integral part of a hybrid architecture. Envision adding more outposts along the …

Small Satellite Regulation In 2021, Lynne M. Montgomery, Christopher D. Bair

Small Satellite Conference

Small satellite innovation has advanced rapidly over the past decade, and regulators are working hard to keep up. In August 2020, a new streamlined licensing process became available at the Federal Communications Commission (FCC) for certain small satellite missions to bring satellite licensing procedures up to date with technological innovation. This new optional licensing process applies to small satellites meeting certain criteria, such as a constellation of ten or fewer satellites, a wet mass of 180 kg or less, a shorter in-orbit lifetime, and a low orbital debris risk. The streamlined licensing process provides for reduced fees and decreased regulatory …

The Nasa Advanced Composite Solar Sail System (Acs3) Flight Demonstration: A Technology Pathfinder For Practical Smallsat Solar Sailing, Keats Wilkie

Small Satellite Conference

NASA’s Space Technology Mission Directorate (STMD) is developing a new generation of compactly packageable composite booms designed specifically for small spacecraft applications where volumes for deployable structures are limited. NASA’s Advanced Composite Solar Sail System (ACS3) will be the first spaceflight application of this boom technology. ACS3 will also be NASA’s first practical solar sail. Objectives of the ACS3 project are to deploy an 80 m² composite boom solar sail in low Earth orbit, and as an extended goal, demonstrate controlled solar sailing flight, including orbit raising and lowering. An overview of the ACS3 project and objectives, including descriptions …

Mats - The Second Innosat Spacecraft To Launch In 2021, Nils Pokrupa, Ronnie Lindberg

Small Satellite Conference

In 2014 the Swedish National Space Agency (SNSA) initiated the development of a generic microsat platform by Swedish space industry with the ambition to give science and academic institutes recurring launch opportunities every 3-4 years. The program is called the Innovative Research Satellites Programme and the platform is called "Innosat". The program has two overarching goals. The first is to conduct viable, high quality science, and the second is to be able to do this at a relatively low cost to be able to support a recurring programme. The first mission, “Mesospheric Airglow/aerosol Tomography and Spectroscopy” (MATS), has suffered some …

Design And Testing Of Autonomous Distributed Space Systems, Nicholas Cramer, Daniel Cellucci, Caleb Adams, Adam Sweet, Mohammad Hejase, Jeremy Frank, Richard Levinson, Sergei Gridnev, Lara Brown

Small Satellite Conference

Distributed Space Systems (DSS) are an emerging class of mission designs that enable new scientific and commercial opportunities. In order to enable those new opportunities, these systems will need to have significantly expanded autonomous capabilities compared to their single-spacecraft predecessors. In this paper, we present Distributed Spacecraft Autonomy (DSA) project, a payload on NASA’s Starling spacecraft experiment. We first describe a step-by-step process for characterizing what features are needed in an autonomous DSS, and show how this process applied to DSA. We then describe the Starling mission, a four-spacecraft swarm hosting multiple DSS payloads. We then describe DSA, which will …