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Full-Text Articles in Entire DC Network
Long-Term Trends And Drivers Of Commercial Shrimp Fisheries Across The Southeastern U.S. Atlantic Coast, Trinity Assels
Long-Term Trends And Drivers Of Commercial Shrimp Fisheries Across The Southeastern U.S. Atlantic Coast, Trinity Assels
Electronic Theses and Dissertations
Long-term dynamics of southeastern U.S. Atlantic commercial shrimp fisheries reflect interacting environmental and socioeconomic processes rather than uniform regional decline. However, integrated, multi-state assessments linking these drivers to fishery-dependent indicators remain limited for the region. This study analyzed over four decades (1980–2023) of confidential fishery-dependent data from coastal South Carolina, Georgia, and northeastern Florida, focusing on the region where white and brown shrimp dominate commercial landings. Segmented regression analysis was used to identify structural shifts in long-term trends of landings, participation, and catch-per-unit-effort (CPUE), while multiple linear regression models identified seasonal temperature variables associated with interannual variation in shrimp CPUE. …
Presence And Impact Of Herbicides On Intertidal Benthic Communities, Marco Sanderson
Presence And Impact Of Herbicides On Intertidal Benthic Communities, Marco Sanderson
Electronic Theses and Dissertations
The growing reliance and widespread use of herbicides on a global scale is negatively affecting non-targeted biota and, consequently, their ecosystems. Herbicide levels and their impacts have been extensively researched around the world in riverine and lacustrine ecosystems. However, studies of the levels and effects of herbicides on coastal intertidal benthic communities have been lacking. This study focused on testing spectrophotometric methodologies for herbicides (atrazine and glyphosate) and documenting their presence and levels in sediment, water, and biotic tissue of intertidal coastal beaches and marshes of Waties Island and Singleton Swash, Horry County, South Carolina. A laboratory microcosm was employed …
Statistical Model Of Subsurface Scattering Bias In Icesat‐2'S Atl06 Product, Thilini Bamunu Arachchige, Kelly E. Gleason, Jonathan C. Ryan, Markus Allgaier
Statistical Model Of Subsurface Scattering Bias In Icesat‐2'S Atl06 Product, Thilini Bamunu Arachchige, Kelly E. Gleason, Jonathan C. Ryan, Markus Allgaier
Environmental Science and Management Faculty Publications and Presentations
ICESat‐2 uses visible laser pulses and photon‐counting detectors to range the Earth's surface, providing precision altimetry for measuring ice sheet elevation change. However, since water ice is transparent to visible light, the photon returns recorded by ICESat‐2's ATLAS instrument may originate from subsurface scattering inside the snow or glacier ice volume, making the surface appear lower than it is. Here, we develop a Monte Carlo Radiative Transfer model to characterize the potential bias caused by subsurface scattering in snow and ice. Our model allows us to study the subsurface scattering bias in relation to photon number, scattering coefficient, and slope …
What Can You Say When You Can't Say Everything?, Lori Dorfman, Liana B. Winett, Katherine Schaff, Pamela Mejia
What Can You Say When You Can't Say Everything?, Lori Dorfman, Liana B. Winett, Katherine Schaff, Pamela Mejia
OHSU-PSU School of Public Health Faculty Publications and Presentations
Today's decisions about what and how to communicate about population health occur amid very real fears and expectations of harsh reprisal that have had far-reaching impacts, both for people's health and for the health professions. It is in this context that health researchers must share their findings with the public and policy makers, prevent confusion, and avoid harming groups already facing systemic barriers to health. In every communication context-from research papers to quotes on the nightly news-people must make thoughtful choices about what to say. Communication, therefore, is always an act of selection that requires both a clear purpose and …
Mentor Evaluation Of A Black Male Youth Mentoring Program, Kenneth Brown
Mentor Evaluation Of A Black Male Youth Mentoring Program, Kenneth Brown
Walden Dissertations and Doctoral Studies
This study was an exploration of how Black male mentors perceived organizational practices, culturally responsive mentoring, relational safety, and systems level barriers shaping their effectiveness and continued participation. The purpose was to examine early mentor-mentee match dissolution and low mentor retention in a nonprofit youth mentoring through the lens of the ecological systems theory and program evaluation framework. The practice-focused research questions were: How do volunteer mentors and program staff perceive the organizational practices and culturally responsive strategies that influence mentor effectiveness and retention in youth mentoring programs, and what organizational and systemic challenges do Black male mentors encounter in …
Psychosis Among Justice-Involved Youth, Muhubo Y. Alinur
Psychosis Among Justice-Involved Youth, Muhubo Y. Alinur
Master of Arts in Human Services
Abstract
Justice-involved youth face considerable mental health challenges, yet psychotic symptoms are frequently overlooked or misclassified as behavioral problems. This capstone critically reviews peer-reviewed literature on the prevalence, risk factors, assessment strategies, clinical needs, and systemic responses related to psychosis in justice-involved adolescents. Literature was sourced from Concordia University, St. Paul Library, Google Scholar, and PubMed. Research indicates that these youth often experience complex, overlapping issues such as trauma, substance use, mood disorders, neurodevelopmental difficulties, and barriers to accessing appropriate mental health care. Unaddressed, these co-occurring needs can result in punitive or unsuitable responses from justice and related systems when …
Supporting Children's Mental Health Through Early Prevention: The Role Of Human Service Professionals, Antwan Kimmons
Supporting Children's Mental Health Through Early Prevention: The Role Of Human Service Professionals, Antwan Kimmons
Master of Arts in Human Services
The mental health of children is a growing concern around the world. According to the World Health Organization (2025), mental health conditions affect approximately one in seven adolescents aged 10–19 years; however, many of these young people do not get the help they need. Mental health problems can affect a child’s ability to learn, manage emotions, develop relationships and cope with stress at home, school and in the community. This review of the literature speaks to the promise of early prevention, early intervention, and trauma-informed care to support children’s mental health before issues develop into more serious levels. It also …
The Cost Of Caring: Understanding Compassion Fatigue In First Responders, Jonathon O. Santiago
The Cost Of Caring: Understanding Compassion Fatigue In First Responders, Jonathon O. Santiago
Master of Arts in Human Services
First responders are regularly exposed to trauma, crisis, death, injury, and human suffering, which may contribute to compassion fatigue. This capstone examined compassion fatigue among law enforcement officers, emergency medical services personnel, firefighters, and other emergency-service professionals. The paper reviewed peer-reviewed research on symptomatology, occupational risk factors, protective factors, compassion satisfaction, emotional labor, stigma, help-seeking barriers, and organizational influences. Attention was given to the overlap between compassion fatigue, burnout, secondary traumatic stress, and vicarious trauma, as inconsistent definitions may make the issue harder to identify, measure, and address. The research also explored how repeated trauma exposure, confidentiality concerns, workplace culture, …
The Underlying Connections Between Drug Abuse And Criminal Involvement, Jessica Sedor
The Underlying Connections Between Drug Abuse And Criminal Involvement, Jessica Sedor
Master of Arts in Human Services
In this composition, an analysis about the relationship between substance abuse and criminal engagement within specific types of crimes is explored. While examining this relationship, the importance of forensic rehabilitation within the criminal justice system is approached through advocacy of identifying risk factors and intergenerational patterns amongst the youth to reduce the abusive cycle of crime and addiction. This paper reflects the evident significance that it is imperative that human services professionals are aware of this relationship and how it can influence and impact one’s judgment, personality, decision making, and other criminogenic behaviors and attitudes. It is critical that the …
Breaking The Cycle: From Victimization To Offending Through The Lens Of Human Services, Colette R. Penalosa
Breaking The Cycle: From Victimization To Offending Through The Lens Of Human Services, Colette R. Penalosa
Master of Arts in Human Services
The victim-offender overlap challenges the common view that victims and offenders are separately labeled by recognizing that both groups have experienced significant childhood trauma, physical, emotional, and psychological abuse, neglect, and other adverse childhood experiences (ACEs). Current research implies these experiences can increase the risk of offending as they all influence cognitive and behavioral development while leaving criminal behavior undetermined. The purpose of this capstone is to analyze the relationship between childhood victimization and offending from a human service perspective; analyzing the pathways a victim takes on the road to offending. Research conducted will focus on exploring the victim-offender overlap, …
Adaptation Of A Seismic Outreach Program: Collaboration Between University Students And Seaoc Mos, Paul Quinter, Ryan Lovejoy, Kristin Potterton, Anahid A. Behrouzi, Lelli Van Den Einde
Adaptation Of A Seismic Outreach Program: Collaboration Between University Students And Seaoc Mos, Paul Quinter, Ryan Lovejoy, Kristin Potterton, Anahid A. Behrouzi, Lelli Van Den Einde
Architectural Engineering
For nearly two decades, students in University of California, San Diego’s Society of Civil and Structural Engineers (UCSD SCSE) chapter have conducted a Seismic Outreach program that reaches around a thousand 4th and 6th grade students annually. This success motivated an effort to share and deploy the curriculum through other universities. To achieve this, the Structural Engineers Association of San Diego (SEAOSD) sought and received a 2024 National Council of Structural Engineers Associations (NCSEA) grant that supported collaboration between UCSD SCSE, the Structural Engineers Association of Southern California (SEAOSC), and California Polytechnic State University, San Luis Obispo (Cal Poly). This …
A Vision For The Future Of Academic Publishing In Sports Analytics, Ryan Elmore, B. Baumer, Brian Macdonald, Gregory J. Matthews, Michael E. Schuckers
A Vision For The Future Of Academic Publishing In Sports Analytics, Ryan Elmore, B. Baumer, Brian Macdonald, Gregory J. Matthews, Michael E. Schuckers
Statistical and Data Sciences: Faculty Publications
This article introduces the Journal of Statistics and Data Science in Sports (JSDSS), a Diamond Open Access, peer-reviewed journal. The journal is founded on three core principles. First, our commitment to open access is absolute. Second, reproducibility is critical and fundamental to the journal. Third, we believe sport is a rich and underutilized laboratory for statistical and data science innovation. The aim of the Journal of Statistics and Data Science in Sports is to provide an outlet for original, rigorous, practical, state-of-the-art, reproducible, and peer-reviewed analysis of sports data as well as the data science tools (software, applications, data, etc.) …
Who Decides The Dead? Interpreting Washington’S Disposition Of Remains Statute, Wyatt Young
Who Decides The Dead? Interpreting Washington’S Disposition Of Remains Statute, Wyatt Young
Seattle University Law Review
Washington’s disposition-of-remains statute, RCW 68.50.160, is designed to honor a decedent’s expressed wishes regarding the control and disposition of their body after death. Yet recent litigation reveals a critical gap between the statute’s intent-centered design and its practical enforceability. In Larotonda v. Blackburn, a trial court acknowledged that irreparable harm would occur if a decedent’s burial wishes were ignored but nonetheless denied relief on the grounds that the individual designated to carry out those wishes lacked standing. The result was a legal paradox: a statute that recognizes decedent autonomy in theory but withholds any meaningful mechanism for its enforcement …
Are Individual Mental Health Issues Treated Fairly By The Criminal Justice System?, Taylor Anderson
Are Individual Mental Health Issues Treated Fairly By The Criminal Justice System?, Taylor Anderson
Master of Arts in Human Services
The intersection of mental health and the criminal justice system is a critical area of inquiry that highlights the complexities of addressing psychological disorders within our legal frameworks. This paper explores the prevalence of mental health issues among incarcerated individuals and examines how systemic deficiencies contribute to a cycle of recidivism and inadequate treatment. By analyzing the existing literature, the research aims to illuminate the pressing need for a reform in the handling of mentally ill offenders, advocating for a shift towards more rehabilitative approaches rather than punitive measures. The implications of those findings extend beyond individual cases to societal …
An Exceptional Model At Sea: Functionalist Targeting And The Legal Vulnerability Of Maritime Civil Defense In Japan, Kentaro Furuya
An Exceptional Model At Sea: Functionalist Targeting And The Legal Vulnerability Of Maritime Civil Defense In Japan, Kentaro Furuya
International Law Studies
The intensifying security competition in East Asia, characterized by persistent territorial disputes and the potential for major regional contingencies, has placed the Japan Coast Guard (JCG) at a strategic crossroads. The 2023 Control Guideline, which outlines the JCG’s role during armed attacks, has further heightened interest in the agency’s legal status. This article examines the critical gap between Japan’s domestic legal framework and the international law of naval warfare, specifically addressing how the potential classification of JCG assets as military objectives undermines the safety of maritime civil defense operations.
While the Japanese government firmly maintains the JCG’s status as a …
Llm-Integrated Anomaly Detection For Iot Networks: Framework Structure, Mamoon M. Saeed, Rashid A. Saeed, Salah Hagahmoodi, Rania A. Mokhtar, Khalid Hamid
Llm-Integrated Anomaly Detection For Iot Networks: Framework Structure, Mamoon M. Saeed, Rashid A. Saeed, Salah Hagahmoodi, Rania A. Mokhtar, Khalid Hamid
Baghdad Science Journal
Internet of Things (IoT) devices are vulnerable to zero-day attacks because most of them have weak or no inherent security due to the resource constraints of the devices. This weakness underscores the growing need for anomaly-based intrusion detection systems tailored to IoT networks. Nevertheless, general anomaly detection traditionally has a high number of false positives that drain analysts' time. Also, a semantic difference exists between the system's results and the operators' interpretations. We introduce a machine learning-based framework to tackle these issues in traditional systems in this paper by combining large language models (LLMs). Our model is effective in identifying …
Neuronal Expression Of Bromodomain Proteins Alters Neuronal Health And Peripheral Protein Homeostasis To Promote Longevity, Naibedya Dutta, Daniel Hicks, Edgar Esparza, Anna Entin, Priyadharshini Vijayakumar, Caitlin M Lange, Tripti Nair, Elijah A Roditi, Athena Alcala, Maxim Averbukh, Matthew Vega, Rebecca Aviles Barahona, Caitlin Mctygue, Veronica Kuo, Juri Kim, Herbert Anson, Aeowynn J Coakley, George Wang, Steven E Pilley, Max A Thorwald, Whitaker Cohn, Sean P Curran, Nicolas Brouilly, Caroline Kumsta, Rachel N Arey, Peter J Mullen, Gilberto Garcia, Ryo Higuchi-Sanabria
Neuronal Expression Of Bromodomain Proteins Alters Neuronal Health And Peripheral Protein Homeostasis To Promote Longevity, Naibedya Dutta, Daniel Hicks, Edgar Esparza, Anna Entin, Priyadharshini Vijayakumar, Caitlin M Lange, Tripti Nair, Elijah A Roditi, Athena Alcala, Maxim Averbukh, Matthew Vega, Rebecca Aviles Barahona, Caitlin Mctygue, Veronica Kuo, Juri Kim, Herbert Anson, Aeowynn J Coakley, George Wang, Steven E Pilley, Max A Thorwald, Whitaker Cohn, Sean P Curran, Nicolas Brouilly, Caroline Kumsta, Rachel N Arey, Peter J Mullen, Gilberto Garcia, Ryo Higuchi-Sanabria
Faculty, Staff and Students Publications
Longevity and stress resilience require precise coordination of gene expression programs across tissues. Here, we demonstrate that overexpression of the chromatin reader bet-1 specifically in neurons of Caenorhabditis elegans promotes organismal longevity and stress resistance via cell-nonautonomous signaling. Neuronal bet-1 elicits a neurotransmitter-dependent signal that activates the conserved stress-responsive transcription factor HSF-1 in the intestine, enhancing proteostasis, oxidative stress resistance, metabolic remodeling, and immune defense. Life span extension by neuronal bet-1 requires both hsf-1 and daf-16 in neurons but only requires hsf-1 in peripheral tissues. Using bulk RNA sequencing, we reveal distinct prolongevity pathways that include enhanced heat-shock response, proteostasis, …
Allograft Tendon Pretensioning Technique Guide., Joseph R Brown, Robert W Mendicino
Allograft Tendon Pretensioning Technique Guide., Joseph R Brown, Robert W Mendicino
Surgery Articles
In foot and ankle surgery, allograft tendons are frequently used in both primary and revision cases to enhance stability and function. However, postoperative complications, such as creep, can compromise the intended correction and stability over time. This paper presents a practical guide on pretensioning techniques prior to implantation, aiming to reduce creep and improve long-term outcomes. Using two common allograft specimens, we demonstrate pretensioning methods with specific focus on tendon stitching, techniques for securing the allograft to the graft board, optimal tensioning and time parameters. We recommend pretensioning at 80 N for approximately 30 min to effectively decrease creep and …
Draft Final 2023 Reclamation Improvement Sites Sampling: Bres No. 31 – Waste Dump #5 Site Evaluation Summary Report, Pioneer Technical Services, Inc.
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.
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 …
Representations Of Cartel Leaders In Narcocorridos: A Reflexive Thematic Analysis, Gael Gamboa
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
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
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.
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
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
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
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.
Fabrication Of Objectives For Imaging Ultracold Lithium, Danelle Akanova
Fabrication Of Objectives For Imaging Ultracold Lithium, Danelle Akanova
Dartmouth College Master’s Theses
This thesis develops a documented, reproducible procedure for building diffraction-limited microscope objectives entirely from catalog singlets, for imaging ultracold 6Li atoms in a ring-trap experiment. The objectives must resolve micron-scale features through a 5 mm fused-silica vacuum window, operate at multiple wavelengths, fit inside a 48 mm magnet bore, and contain no conductive or magnetic material, because the surrounding coils switch 0.1 T fields on microsecond timescales. Commercial long-working-distance objectives are universally housed in metal, which the eddy-current constraint rules out, and custom fabrication of a suitable non-conductive matched pair is estimated at nearly $200k.
The procedure is developed and …
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
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.
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.
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
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.