Digital Commons Network^™

Development Of The Moci Adcs-01 Verification Test, Rinisha Ramprakash, Wali Mian, Deepak R. Mishra

Small Satellite Conference

The members of the Guidance and Navigation Control team (GNC), whose primary goal is to calculate the commands needed to steer the Cubesat where it is desired to be, determine the CubeSat's orbital parameters such as the positions, and adjust the path of the CubeSat to meet mission requirements, will be conducting research at the University of Georgia Small Satellite Research Laboratory (SSRL). This research will be focused on helping test the Attitude Determination Control System (ADCS) of the Multiview Computational Onmoard Imager (MOCI) CubeSat, which is a system that is responsible for determining and maintaining the orientation of the …

A Hardware-In-The-Loop Star Tracker Testbed, Ashley Haraguchi

Small Satellite Conference

As the use of small satellites for advanced space missions continues to grow, the importance of low mass and cost three axis attitude stabilization systems is increasing as well, which means high accuracy attitude knowledge is required. Star trackers provide the most accurate attitude knowledge of any type of attitude sensor, but their high cost, size, and weight can be prohibitive to small satellite missions. Many simple star trackers have been developed using commercial-off-the-shelf camera sensors and processing hardware, but the challenge remains in testing and characterizing these devices. Common methods involve night sky tests, where the star tracker is …

Design And Development Of A Dual-Use Satellite Deployer, Qi Lim, James Helmich, Michael F. Lembeck, Dana Ruchti, Austin Bancroft, Michael Pica

Small Satellite Conference

The CubeSat standard has led to the widespread implementation of repeatable design, integration, and operations processes.¹ Following launch, the deployment of a satellite is one of the most critical aspects of any mission. Satellite deployers, also known as dispensers, are used to release satellites from on-orbit launchers and platforms. Dispensers have evolved into two competing, but not interchangeable, configurations using either rails or tabs on the CubeSat structure to guide the satellite smoothly out of the deployer. Rail deployment aligns CubeSats along a set of four rails, one in each corner of the dispenser. The satellite is then pushed …

Evaluation Of Spectral Cnnjpeg Adaptive Compression On The Stp-H7-Caspr Platform, Diego Wildenstein, Tyler Garrett, Evan Gretok, Seth Roffe, Alan D. George

Small Satellite Conference

Many space-sensing platforms are capable of producing vast amounts of sensor data. While having additional data can further science goals, it also introduces the problems of storage and transfer. Space platforms have limited storage resources and transmission bandwidth. As such, data compression is a vital step to make the most efficient use of onboard resources. Sensors such as multispectral imagers can capture many times the amount of data of traditional visual sensors, posing difficulties for onboard storage and processing of the data. Spectral CNNJPEG is a state-of-the-art adaptive compression algorithm for multispectral and hyperspectral-imaging sensors. This algorithm has been previously …

Commissioning Plans For The Pandora Smallsat: A Mission To Quantify Stellar Contamination Of Exoplanet Transmission Spectra, Lindsey Wiser, Jessie Dotson, Thomas Greene, Thomas Barclay, Knicole Colon, Christina Hedges, Ben Hord, Aishwarya Iyer, Elisa Quintana, Rae Holcomb, Trevor Foote, Jordan Karburn

Small Satellite Conference

Pandora is a SmallSat mission designed to observe exoplanet atmospheres and stellar activity. Funded by the NASA Science Mission Directorate (SMD) Astrophysics Division through the Pioneers program, Pandora is a collaboration between NASA centers Goddard and Ames, the Lawrence Livermore National Laboratory, the University of Arizona, and other scientific institutions. Pandora will survey at least 20 transiting exoplanets during one year of science operations, obtaining a long baseline of simultaneous visible-light photometric and near-IR spectroscopic observations. These observations will be used to quantify and correct for stellar contamination of exoplanet transmission spectra due to spots and faculae on host stars. …

Modulation Recognition Using Machine Learning Approaches In Cubesat Signals, Vidushi Jain, Regina Lee, Franz Newland

Small Satellite Conference

• CubeSats make up a large subset of the small satellite industry. • Many CubeSat failure occur along the communication chain and failure to establish contact with the satellite • GNU radio is a platform commonly used for processing signal, with the help of GR-satellite • Establishing such decoding chains are a time-consuming task • Machine learning can be used as a tool to decode signal coming from spacecrafts • The focus is to target different layers of the OSI stack, and this poster demonstrates modulation detection layer

Engineering Model Development Of Lunacube: 6u Dual-Satellite Lunar Navigation And Communication System, Hirotaka Sekine, Kazuki Toma, Takeshi Matsumoto, Shinichi Nakasuka, Toshiki Tanaka, Takuji Ebinuma, Rion Sobukawa, Yoshihide Aoyanagi

Small Satellite Conference

Lunar navigation and communication satellite systems are now recognized as important infrastructure for more efficient lunar exploration. While establishing a full constellation system will take several more years, lunar surface explorations are already becoming more active. To address the immediate demand for positioning and communication relay, especially in the South Pole region, a nimble technology demonstration mission named Lunar Navigation CubeSat (LunaCube) has been proposed. Following the completion of preliminary design in 2021 and detailed design in 2022, the engineering model was developed in 2023. This paper presents updated orbit analysis that considers trade-off between orbit maintenance costs and positioning …

Performance Analysis Of A Pointing, Acquisition, And Tracking System For The Vision Laser Crosslink Mission, Yeji Kim, Pureum Kim, Han-Gyeol Ryu, Sang-Young Park

Small Satellite Conference

As the volume of space-borne data increases, laser communication techniques are being considered to achieve a fast transmission rate and high link security or privacy. The very-high-speed intersatellite link system using an infrared optical terminal and nanosatellite (VISION) mission comprises two 6U formation-flying nanosatellites, and its main objective is to achieve a Gbps-level inter-satellite data-transfer capacity by applying laser communication technology in free space. A pointing, acquisition, and tracking (PAT) system is required to establish and maintain a stable laser crosslink. In the CubeSat platform, the PAT system relies on a satellite attitude determination and control system (ADCS) for body …

A Systematic Review Of The Prevalence Of Late Identified Hearing Loss In Childhood, Karen Muñoz, Dylan Chan, Donald Goldberg, Diana Ortiz, Valerie James Abbott, Karl White

Communicative Disorders and Deaf Education Faculty Publications

Objectives

The objective of this systematic review was to assess the evidence about the prevalence of permanent hearing loss for children not identified from newborn hearing screening (NHS).

Design

Articles were grouped into three categories based on the methodological approach: (1) all participants received diagnostic testing, (2) otoacoustic emission (OAE) or pure tone screening was completed and those not passing were referred for a diagnostic test, and (3) data were retrieved from archival records. Study characteristics, prevalence, and contextual factors were synthesised and narratively described.

Study Sample

30 peer-reviewed articles.

Results

Prevalence of permanent hearing loss per 1,000 children ranged …

What Morgan County Leaders And Residents Can Do To Strengthen The Impact Of Girls And Women In Their Area, Amy Anderson, Deborah Lin, Susan R. Madsen

Marketing and Strategy Faculty Publications

This idea sheet is based on a 2024 gathering of 20 leaders in Morgan County. Girls and women face challenges unique to the area in which they live, and the goal of this gathering was to identify those barriers and determine strategies and initiatives that local leaders and residents can implement to address them. This document includes recommendations in the following areas: home and family, education, health and wellbeing, business and economics, and culture and community engagement.

The Perceived Community And Environmental Impacts Of Development Around Bear Lake, Alexander Theophilus, Jessica D. Ulrich-Schad

Publications

Bear Lake is a popular recreation and tourist destination split between the borders of northeastern Utah and southeastern Idaho. Bear Lake’s beaches, watersports, and other outdoor recreation opportunities have attracted tourists for decades. Communities around Bear Lake include Garden City and Laketown, Utah, as well as Paris, Montpelier, Fish Haven, St. Charles, and Bennington, Idaho. Additionally, Bear Lake lies in close proximity to larger metropolitan areas along the Wasatch Front of Utah, such as Salt Lake City and Logan.

Bear Lake Project Overview, Charlotte Williams, Alexander Theophilus

Publications

Bear Lake is a popular recreation and tourist destination split between the borders of northeastern Utah and southeastern Idaho. Bear Lake's beaches, watersports, and other outdoor recreation opportunities have attracted tourists for decades. Communities around Bear Lake include Garden City and Laketown, Utah, as well as Paris, Montpelier, Fish Haven, St. Charles, and Bennington, Idaho. Additionally, Bear Lake lies in close proximity to larger metropolitan areas along the Wasatch Front of Utah, such as Salt Lake City and Logan.

In Pursuit Of Eye Tracking For Visual Landscape Assessments, David Evans, Brent Chamberlain

Landscape Architecture and Environmental Planning Faculty Publications

Visual quality and impact assessments have historically relied on experts to formally evaluate the visual properties of a landscape. In contrast, environmental psychologists have studied subjective landscape preferences using ratings and surveys. These two approaches represent, respectively, the “objectivist” and “subjectivist” paradigms within visual landscape research. A gap, however, exists between these approaches: actual observation behaviors. In this paper, we argue for the inclusion of eye-tracking research in visual landscape assessments as a critical bridge between objective landscape qualities and subjective visual experiences. We describe the basics of eye-tracking methods and data types to introduce the role of eye movements …

Cutting Propagation Of 'Coy' Alder-Leaf Mountain Mahogany, Asmita Paudel, Youping Sun, Atanda Samuel Oladejo

Plants, Soils, and Climate Faculty Publications

‘Coy’ alder-leaf mountain mahogany (Cercocarpus montanus) is a new cultivar developed from a species native to the western United States with potential for use in xeriscaping, rock gardens, and water-efficient landscaping. However, efficient propagation methods are not well developed for it. In this study, cutting propagation of ‘Coy’ alder-leaf mountain mahogany was investigated over 3 years to evaluate the effects of wounding method, rooting hormone, type of cuttings collected, and time for cutting collection on rooting. In May, Jul, and Sep 2020, 2021, and 2022, nondormant hardwood subterminal cuttings and/or semihardwood terminal cuttings were collected for wounding studies. …

Tremblings, August 2024, Western Aspen Alliance

Tremblings

Function over form: the benefits of aspen for Greater Sage-grouse

Michel T. Kohl, Associate Professor of Wildlife Management and Wildlife Extension Specialist, University of Georgia

David Dahlgren, Associate Professor and Rangeland Wildlife Extension Specialist, Utah State University

Sage-grouse, and their elaborate springtime breeding displays, are an icon of Western landscapes. Yet, sage-grouse (a sagebrush obligate species) have been facing decades-long declines due to the loss of habitat. Historically, the species ranged across 13 western states and two Canadian provinces. Today, they occur across < 50% of that range, and abundance has declined 80% since 1965 and almost 40% since 2002. Despite this, it was determined in 2015 that the sage-grouse did not warrant Endangered Species protection due to the strength of wide-spread collaborative conservation actions.

Quality Of Life Domains For Students Living With A Severe Disability And Their Families, Eden Withers

All Graduate Reports and Creative Projects, Fall 2023 to Present

Background and Purpose

From the latter half of the 20th century to now, the United States has dramatically focused its efforts on increasing life longevity and quality of life for people with disabilities, including people with intellectual and developmental disabilities (IDD). Federal legislation has taken steps to increase quality of life for people with IDD. Quality of life can be assessed through a variety of questionnaires, including the familial perspective of quality of life. Although quality of life can be assessed and it is supported by federal legislation, people with IDD broadly have yet to experience an enviable quality of …

Advertising The West: The History Of La Fiesta De Los Vaqueros, Monique Davila

All Graduate Reports and Creative Projects, Fall 2023 to Present

In February 1925, Tucson celebrated the first La Fiesta de Los Vaqueros with a three-day rodeo that ended with a huge parade through the city center. Created by Philadelphia-born and new resident of Tucson Frederick Leighton Kramer and other Tucson city boosters, the event became an annual fiesta with the hopes of not only promoting Tucson and a fundraiser for the University of Arizona’s newly established polo team, but also a way to share Kramer’s newfound enthusiasm for Tucson’s beauty and history. However, the history the fiesta presented centered around the Anglo-American pioneers of southern Arizona. This approach ignored the …

Evaluating The Cost Of Gain And Financial Returns Of Cattle Fed Hydroponically Produced Barley Fodder, Lex Peterson

All Graduate Reports and Creative Projects, Fall 2023 to Present

Hydroponically produced fodder continues to garner attention as a feed source within livestock production. This attention in part is due to a belief that hydroponically produced fodder is more efficient in its use of inputs such as water when compared to conventional feeds. Water efficiency is especially appealing in areas like the Intermountain West region of the U.S where water availability is often constrained. This analysis looks to understand how using hydroponically produced barley fodder to finish steers compares economically to finishing steers on a nutritionally equivalent conventional finishing ration. To do so, a stochastic simulation model is constructed to …

The Community Connections Of St. John's Episcopal Church, Connor Murphy

All Graduate Reports and Creative Projects, Fall 2023 to Present

St. John's has been an institution that stands for service and community in Logan, Utah for the past 150 years. During this time, many things have changed, but some have stayed the same. The goals of this exhibit are to show both the changes and consistent features of St. John's in its history and to share the story of a church that has done so much for the community. The attached paper is meant to engage with the academic community and the linked exhibit and digital archive collection is meant to provide a resource to the public where they can …

Birds, Bees, And The Babies: Study Of The Influence Of Self-Efficacy On Parent-Child Sex Communication, Cassandra M. Craig

All Graduate Theses and Dissertations, Fall 2023 to Present

Previous studies show that parents tend to be uncomfortable discussing sexual topics with their children, such as menstruation, masturbation, and/or condom use. This study offers a look at the part confidence plays in a parent's intentions to talk to their kids about such topics. The results indicated that the confidence parents feel about discussing sexual topics is not related to how much their own parents talked with them about sex. However, the confidence they feel that could be coming from other models, like social media or peers, is related to how much parents intend to talk with their own children …

Gps-Denied Navigation Using Location Estimation And Texel Image Correction, Nikolas I. Jensen

All Graduate Theses and Dissertations, Fall 2023 to Present

In recent years, the use of small drones, also categorized as small Unmanned Aerial Vehicles (sUAV), has surged. They are used for tasks like surveying land, collecting data from a distance, and performing maneuvers for military operations. These drones are popular because they are affordable, small, easy to use, and can navigate well in complex areas. These factors make them a cheap and quick option for tasks like surveying and surveillance when compared to traditional methods.

This thesis introduces a system that uses algorithms to figure out where the drone is. Typically, this relies on sensors and GPS, but GPS …

Microbiome Assembly And Function In The Solitary Mason Bee, Osmia Lignaria (Megachilidae), Bailey Crowley

All Graduate Theses and Dissertations, Fall 2023 to Present

Animal-microbe interactions can influence host biology, ecology, and evolution. The assembly and function of microbes found within animal hosts oftentimes depends on which species are involved. Advances in sequencing technologies have permitted the exploration of host-microbe interactions in a variety of animals, including bees. Early research aimed at understanding the microbiomes of social bees, such as honey bees and bumble bees, found that microbes prevent the spoilage of stored pollen, breakdown indigestible nutrients into smaller molecules available for uptake by the host, and also protect the host from pathogens. When environmental stressors, such as increased temperatures, disrupt the microbiome, the …

Creating A Virtual Hierarchy From A Relational Database, Yucong Mo

All Graduate Theses and Dissertations, Fall 2023 to Present

In data management and modeling, the value of the hierarchical model is that it does not require expensive JOIN operations at runtime; once the hierarchy is built, the relationships among data are embedded in the tree-like hierarchical structure, and thus querying data could be much faster than using a relational database. Today most data is stored in relational databases, but if the data were stored in hierarchies, what would these hierarchies look like? And more importantly, would this transition lead to a more efficient database? This thesis explores these questions by introducing a set of algorithms to convert a relational …

A Theory Of Conditional Party Opposition, Samuel Nelson

All Graduate Theses and Dissertations, Fall 2023 to Present

This paper takes a critical look at executive power in the United States. Recent years have shown an increase of executive power that many people including: scholars, media, and the public have become skeptical of. The new norm has been for the executive to bypass Congress in order to accomplish policy goals. Traditionally the separation of powers between the executive, legislative, and judicial branches has been the remedy to executive power. This thesis, however, argues that scholarship has largely ignored the role of political parties in government. Due to this, scholarship has misunderstood the role parties play in the separation …

Validating A Scale Of Psychological Flexibility And Inflexibility For Older Adolescents, Caleb Douglas Farley

All Graduate Theses and Dissertations, Fall 2023 to Present

Psychological flexibility (PF) is a skill that is related to various mental health experiences in adults. Higher levels of PF seem related to greater wellbeing. Given increases in mental health problems with youth, measuring PF and its inverse, psychological inflexibility (PI), might be useful for identifying those teenagers at risk for mental health challenges and referring them to appropriate interventions. To date, most measures of PF and PI are only available for adults older than 18, and, while theory suggests PF and PI are important for adolescent mental health, little research has examined the validity of these claims. This multipaper …

Online Multiplayer Video Game Play And College Adjustment, Salina M. Ochoa

All Graduate Theses and Dissertations, Fall 2023 to Present

There are an increasing number of individuals who participate in multiplayer video games and an increase in screen time overall. Due to the increase in online video game play, this study aimed to find possible positive impacts that online multiplayer video games had on freshmen who are adjusting to college, as this is a pivotal point in life. The data were collected at the beginning of the second semester and 99 freshman, 18 years or older, who regularly engaged in online multiplayer video games participated in the study. The study showed four important findings: First, students who receive support from …

Emerging Technologies And Advanced Analyses For Non-Invasive Near-Surface Site Characterization, Aser Abbas

All Graduate Theses and Dissertations, Fall 2023 to Present

This dissertation introduces novel techniques for estimating the soil small-strain shear modulus (G_max) and damping ratio (D), crucial for modeling soil behavior in various geotechnical engineering problems. For G_max estimation, a machine learning approach is proposed, capable of generating two-dimensional (2D) images of the subsurface shear wave velocity, which is directly related to G_max. The dissertation also presents a method for estimating frequency dependent attenuation coefficients from ambient vibrations collected using 2D arrays of seismic sensors deployed across the ground surface. These attenuation coefficients can then be used in an inversion process …

Federated Learning In Wireless Networks, Xiang Ma

All Graduate Theses and Dissertations, Fall 2023 to Present

Artificial intelligence (AI) is transitioning from a long development period into reality. Notable instances like AlphaGo, Tesla’s self-driving cars, and the recent innovation of ChatGPT stand as widely recognized exemplars of AI applications. These examples collectively enhance the quality of human life. An increasing number of AI applications are expected to integrate seamlessly into our daily lives, further enriching our experiences.

Although AI has demonstrated remarkable performance, it is accompanied by numerous challenges. At the forefront of AI’s advancement lies machine learning (ML), a cutting-edge technique that acquires knowledge by emulating the human brain’s cognitive processes. Like humans, ML requires …

Ensemble Machine Learning At The Edge Using The Codec Classifier Structure And Weak Learners Guided By Mutual Information, Aj Beckwith

All Graduate Theses and Dissertations, Fall 2023 to Present

The Codec Classifier is a low-computation, low-memory tree ensemble method that dramatically improves feasibility of image classification on resource-constrained edge devices. It achieves advantages over other tree ensemble methods due the separation of encoder and decoder tasks in the classifier. The encoder partitions feature space, and the decoder labels the regions in the partition. This functional separation of tasks enables the encoder design (partitioning) to be guided by maximizing the mutual information (MI) between class labels and the features (i.e. the encoded representation of the data) without regard to the error performance of the classifier. Experiments show maximizing MI leads …

The Interactions Between Drought Tolerant Corn Hybrids And Plant Water-Stress On Weeds And Their Host Capability For Spider Mites, Mercy Adhiambo Odemba

All Graduate Theses and Dissertations, Fall 2023 to Present

With climate change, it is predicted that more frequent high temperatures and drought severity will lead to an increase in damage caused by pests that thrive under these conditions. Spider mite outbreaks, for example, are associated with plant waterstress and there is evidence that some weeds are more resilient and adapted to drought than some crops, leading to major concerns for the management of these two pest types. Weeds directly compete with crops for limited resources, but what is unclear is which weeds harbor spider mites and whether they exacerbate the impact of spider mites on corn crops under water-stressed …