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Non-Destructive Characterization Of Peripheral Arteries Using Intravascular Ultrasound, Colman Isaac Freel, Courtney Keiser, Majid Jadidi, Sylvie Sim, Yury Salkovskiy, Kaspars Maleckis, Anastasia Desyatova, Alexey Kamenskiy, Jason Mactaggart

Posters: 2021 Summer Undergraduate Research Program

Peripheral Artery Disease (PAD) is the chronic obstruction of blood flow to the extremities caused by plaque buildup. Poor circulation results in exertional pain, numbness, and weakness, and in severe cases, can manifest critical conditions, including gangrene and limb loss. PAD affects approximately 8.5 million Americans and costs the United States $21 billion annually in direct medical expenses. High expenditures are attributed to operation and intervention failures resulting in frequent need for revascularization. Treatment of PAD typically involves lifestyle/diet adjustments, bypass surgery, or angioplasty/stenting. Unfortunately, repeated limb deformation during locomotion often results in adverse repair device-artery interactions, which hinder the …

Systematic Review Of Preclinical Surgical Meshes For Hernia Repair, Andrew Hedstrom, Nathan Bills, Cynthia M. Schmidt, Mark A. Carlson

Posters: 2021 Summer Undergraduate Research Program

Hernia repair is one of the most common procedures performed around the world. Surgical mesh materials are used to reinforce hernia repairs and improve surgical outcomes. However, current commercial mesh materials produce problems such as infection, rejection, shrinkage, adhesion, and mechanical failure. These problems contribute to a high rate of hernia recurrence and mesh removal. With the number of hernias expected to rise in the future due to increases in obesity and diabetes, the need for more effective mesh materials is critical. This review aims to identify, evaluate, and summarize experimental surgical mesh materials used in the preclinical stages of …

Large-Scale Preclinical Swine Study Using Engineered Hemostatic Nanofiber Objects For The Treatment Of Junctional Hemorrhage; Nanofiber Microspheres For Directing Cellular Growth And Response, Justin S. Dyke, Johnson Vitharikunnil John, Jingwei Xie

Posters: 2021 Summer Undergraduate Research Program

This poster explores the use hemostatic nanofiber objects for treatment of non-compressible junctional hemorrhages by creating internal compression. Building upon previous studies changes were made to the method of producing nanofiber objects that is convertible to large-scale production. This poster also explores the use of nanofiber microspheres for tissue repair and regenerative applications. Two methods were explored in the use of electrospraying with and without adding air to the solution to adjust porosity of the microspheres. Both studies contained the use of electrospinning nanofibers and crosslinking of materials to adjust desired properties.

The Role Of Occupational Therapy With People Living With Epilepsy: A Scoping Review, Paige Peeples, Steven M. Gerardi

Summer 2021 Virtual OTD Capstone Symposium

Objective: The aim of this scoping review is to systematically examine and organize current literature describing the current roles of occupational therapists with people living with epilepsy, including assessments, interventions, and other behaviors. This will help identify current gaps in the literature to facilitate future research.

Methods: Using scoping review methodology, an electronic database search was conducted using the search terms “occupational therapy and epilepsy”. Data was extracted and charted independently by the investigator by way of finding themes and codes through analysis.

Results: The total number of studies included was 12. The primary methodology noted were case studies. …

Formation Of Microcages From A Collagen Mimetic Peptide Via Metal-Ligand Interactions, Jeremy Gleaton, Ryan W. Curtis, Jean Chmielewski

Department of Chemistry Faculty Publications

Here, the hierarchical assembly of a collagen mimetic peptide (CMP) displaying four bipyridine moieties is described. The CMP was capable of forming triple helices followed by self-assembly into disks and domes. Treatment of these disks and domes with metal ions such as Fe(II), Cu(II), Zn(II), Co(II), and Ru(III) triggered the formation of microcages, and micron-sized cup-like structures. Mechanistic studies suggest that the formation of the microcages proceeds from the disks and domes in a metal-dependent fashion. Fluorescently-labeled dextrans were encapsulated within the cages and displayed a time-dependent release using thermal conditions.

Bridge Design Between Axi Lite And Ahb Bus Protocol, Jaymin Patel, Yash Shah, Lili He

Faculty Research, Scholarly, and Creative Activity

Architecture of bridge model between AXI Lite and AHB for this paper were simulated using Synopsys VCS and DC in Verilog HDL. Bridge structure mainly comprises of arbitration techniques, control signals, multiplexing techniques for writing data signals and Decoder for reading data section. In this work, bridge model between AHB and AXI lite was simulated and characterized. The proposed model of bridge design provides efficient communication between on chip bus protocols like AXI and AHB on chip in the era of deep sub-micron technology where channel side is reduced as much as 5 nm.

Exploring Non-Functional Coupling Between Subsystems, Matt Pope

Theses and Dissertations

Many software systems depend on other systems to function correctly or are themselves composed of interdependent subsystems. In that context, behavioral changes in a dependency may have consequences for a dependent subsystem. This includes changes to non-functional properties such as latency or availability. In this paper we use the term non-functional coupling to mean the extent to which a subsystem is affected by changes to non-functional properties in a dependency. We argue that non-functional coupling has implications for the maintainability, reliability and performance of an overall system. We also explore the extent to which various engineering techniques used in interaction …

Mechanical Engineering News, Georgia Southern University

Mechanical Engineering: News & Publications (2013-2023)

• Mechanics Course Sequence Review Sessions (Statics, Dynamics, Mechanics, Machine Design)

College Of Engineering News, Georgia Southern University

College of Engineering & Computing: News & Publications (2010-2023)

• GS Achieves Foundry Education Foundation Certification

A Moment Of Opportunity: Strategies For Inclusive Economic Growth, Michelle Miller-Adams, Timothy J. Bartik, Brad J. Hershbein

Upjohn Institute Technical Reports

No abstract provided.

An Empirical Comparative Study On The Two Methods Of Eliciting Singers’ Emotions In Singing: Self-Imagination And Vr Training, Jin Zhang, Ziming Xu, Yueying Zhou, Pengpai Wang, Ping Fu, Xijia Xu, Daoqiang Zhang

Library Scholarship

Emotional singing can affect vocal performance and the audience’s engagement. Chinese universities use traditional training techniques for teaching theoretical and applied knowledge. Self-imagination is the predominant training method for emotional singing. Recently, virtual reality (VR) technologies have been applied in several fields for training purposes. In this empirical comparative study, a VR training task was implemented to elicit emotions from singers and further assist them with improving their emotional singing performance. The VR training method was compared against the traditional self-imagination method. By conducting a two-stage experiment, the two methods were compared in terms of emotions’ elicitation and emotional singing …

Influence Of Academic Qualification On Librarians' Proficiency Of New Media Technologies In Selected University Libraries In North-Eastern Nigeria., Abbas Adamu Lamido Gora, Ahmed Baba Gombe, Zainab Mohammed Abdullahi, Ibrahim Mohammed

Library Philosophy and Practice (e-journal)

The study investigated the influence of academic qualification on librarians' proficiency of new media technologies in selected university libraries in North-Eastern Nigeria. The study was guided by two research questions and a null-hypothesis. Descriptive survey research design was adopted. The population of the study was 144 librarians from seven selected University libraries in North-Eastern Nigeria. Total enumeration was used in the study. Questionnaire was used as research instrument. Descriptive statistics of frequency counts, percentage, mean and standard deviation as well as inferential statistics of Pearson Chi-square (X2) were used in analysing the data. SPSS version 23.0 software was used for …

Mss0240. Smith-Buckingham Papers Finding Aid

Special Collections Finding Aids

The collection contains original and transcribed letters and fragments, essays, reminiscences, and other documents dating from the early 1800s to the 1970s. The nineteenth century items are predominately from the Neely and Pitser Miller families of Bolivar and Memphis, as well as the Jacob Smiths of Maine, Minnesota, and Tennessee. Twentieth century materials include an account by Hugh Evelyn Buckingham of his experiences as an artillery officer in France in 1918, and a few letters from Nash Buckingham, the well-known outdoorsman and writer.

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Inclusive Math And Science Spaces Through Professional Development: A Qualitative Study Focusing On Educator Views Of Multilingual Learners And Educator Identity, Helen Dick Brandon

Theses and Dissertations

This action research qualitative study focused on the role that targeted professional development has on shifting the ways in which middle school math and science educators view their culturally and linguistically diverse (CLD) students; in addition, this study focused on the role that professional development plays on shifting teacher identity. Through this study, four middle level math and science educators took part in a four month professional development opportunity that included interviews, questionnaires, video lessons, and focus groups. Through this experience, the educators shifted their views of CLD students to be more asset-based. When looking at the shifts in their …

Ground Testing Of A Chip-Scale Atomic Clock For Maxwell Cubesat Flight Experiment, Luciana Schement, Caroline Dixon

Small Satellite Conference

This paper provides an overview of a flight experiment to observe the performance of a chip-scale atomic clock (CSAC) on a LEO cubesat. The results of this experiment will provide the basis for a realistic evaluation of the utility of the CSAC to support onboard position, navigation, and timing (PNT) applications for small satellites. The paper focuses on the goals and outcomes of ground testing performed on a CSAC in preparation for flight onboard the UNP-9 cubesat mission MAXWELL. The ground testing includes live sky testing, RF/GNSS simulator testing, and electromagnetic field testing.

An Analytical Approach To Modeling Spacecraft Potentials In Spice, Jason Powell

Small Satellite Conference

As the use of Langmuir probes on small satellites increases, so does the need to understand how spacecraft charging affects Langmuir Probe measurements. This paper explores the important relationship between probe and spacecraft surface area, and how it relates to the floating potential (or charge) on the spacecraft. Further, this paper discusses how a charged body’s interaction with the ionosphere can be modeled using custom circuit elements designed in SPICE. The SPICE models introduced are demonstrated with the SPORT spacecraft, a 6U mission that makes Langmuir probe measurements in concert with two electric field probes used to account for the …

A Versatile And Open-Source Radio Framework For The D3 Cubesat Mission, Carlos Carrasquillo

Small Satellite Conference

This paper details the design and implementation of the communications system for the Drag De-OrbitDevice (D3) CubeSat mission. The D3 mission aims to validate the effectiveness of a novel approach to aerodynamically-based orbital maneuvering and controlled re-entry. Using four deployable tape-spring booms that can be retracted to any intermediate length, the D3 can accurately modulate the ballistic coefficient profile of the CubeSat in low Earth orbit (LEO). To compute the necessary boom deployment and reproduce a desired trajectory, the guidance profile of the CubeSat must be actively generated, which itself is a very computationally intensive process. The guidance will therefore …

A Cubesat Power System Implementing A Zero Voltage Switching Resonant Buck Converter Design With Low Electronic & Radio Frequency Noise, Christine L. Page

Small Satellite Conference

Noise from power systems can be a limiting factor in how well scientific instruments on CubeSats can perform. Instruments such as microwave radiometers which are on TROPICS, TEMPEST-D, and IceCube, or wide-band software defined radios such as those used on AERO/VISTA for Earth auroral hiss observations, or precipitation instruments used on RainCube are all affected by electronic and radio frequency (RF) noise. Current hybrid DC/DC converter technologies can also be prone to failure and anomalies during flight. The GRACE mission had the converter fail due to high temperatures, which caused a reduction in switching frequency. This research project will provide …

A Paleoseismic Study Of The Twin Lakes Fault, Mount Hood Fault Zone, Oregon, Charlie Carr, Ashley R. Streig

McNair Symposium

Recent geologic mapping on high-resolution topography from lidar has led to the discovery of a zone of active faults on Mount Hood. The Mt. Hood Fault Zone consists of four separate faults, and stretches ~55 km from south to north, and crosses the summit of Mount Hood. The focus of this study is the northern section of Twin Lakes Fault, which lies directly south of Mount Hood and adjacent to OR35 and the White River. Lidar topography reveals the west side down normal displacement on the Twin Lakes fault. The highest tectonic seismicity rates in the Mount Hood area occur …

Constellation Forecasting Tools For Autonomous Operations, Alexander Dunn, Joe Miceli, Michael Reher

Small Satellite Conference

Large constellations are quickly becoming the norm in small satellite missions. These constellations are being designed and developed faster than ever before through the utilization of smaller, heterogeneous spacecraft. Often, these constellations provide increased resiliency and capabilities over their heritage, highly tailored counterparts. The ability to replace on-orbit assets quickly and with lower costs is an advantageous feature of these large smallsat constellations. With the advent of these new architectures, though, come increased complexity in mission operations. The management and monitoring of potentially hundreds of heterogeneous space assets can be extremely challenging and negate much of the cost savings using …

Automated Fleet Commissioning Workflows At Planet, Jose Angel Gutierrez Ahumada, Kelsey Doerksen, Stefan Zeller

Small Satellite Conference

In order to maintain the world’s largest Earth Observation satellite constellation and its goal of providing daily Earth coverage, Planet procures regular launch opportunities, each including up to several dozens of new satellites. Commissioning these batches of satellites, known at Planet as “flocks”, from deployment until imaging is done by a small team of operators and depends heavily on a number of automated workflows developed at Planet. Bringing all satellites to production in a safe and timely manner has a direct link to the productivity of the entire fleet. The main bottleneck during commissioning is ground station access time with …

The Autonomous System Architecture Of The Small Sar Satellite Operation System And On-Orbit Autonomous Operation Experiences, Toshihiro Obata, Motoyuki Arai, Shoichiro Asada, Tomoyuki Imaizumi, Yutaka Suzuki

Small Satellite Conference

We are developing a small SAR (Synthetic Aperture Radar) satellite for our commercial solution business. Our goal is to deploy at least 30 small SAR satellites in orbit and enable frequent and persistent observations until the Mid 2020s. We launched the satellite on 15th December 2020 by Rocket Lab's Electron. We waited for a month until we took the first image to confirm the complete evacuation of the residual air and contaminations to prevent any hazardous electrical discharge. We took the first image on 8th February. The satellite is now operating in a fine state and acquiring images requested by …

Satellite Constellations - 2021 Industry Survey And Trends, Erik Kulu

Small Satellite Conference

Large satellite constellations are becoming reality. Starlink has launched over 1600 spacecraft in 2 years since the launch of the first batch, Planet has launched over 450 in total, OneWeb over 200 and counting. Every month new constellation projects are announced, some for novel applications.

First part of the paper focuses on the industry survey of 251 commercial satellite constellations. Statistical overview of applications, form factors, statuses, manufacturers, founding years is presented including early stage and cancelled projects. Large number of commercial entities have launched at least one demonstrator satellite, but operational constellations have been much slower to follow than …

Method, System, And Computer Program Product For Dispute Resolution Using Customized Batch Files, Prasad Neelakantam, Venugopala Medahalli, Thaison Chu

Defensive Publications Series

The present disclosure related to method for dispute resolution using customized batch files is disclosed. A method may include receiving a customized batch file including disputed transaction data and metadata. The disputed transaction data may have a customized format. The customized batch file may be communicated to a repository and/or retrieved by a processing engine. The metadata associated may be detected. A mapping from the customized format to a universal format may be determined based on the metadata. The disputed transaction data may be translated from the customized format to the universal format based on the mapping. A plurality of …

Motivational Factors And Opportunities To Science, Technology, Engineering, And Mathematics (Stem) Majors Among Native Hawaiian And Other Pacific Islanders (Nhpi), Shanthia Espinosa, Alma M. O. Trinidad

McNair Symposium

Higher education is a contentious space that poses challenges and barriers to the science, technology, engineering, and math (STEM) fields. This study explores the motivational factors and opportunities to STEM fields among Native Hawaiian Pacific Islanders (NHPI). A qualitative method was used in this study, examining public archival data (e.g., videos, recordings, digital information, etc.) of self-identified NHPI scientists, scholar-activists, leaders, and their narratives of entering the STEM fields. Specifically, the portrayal of needs and promotion of NHPI representation and access were examined, including messages that inspire and encourage STEM interest among NHPI youth. This study explores motivation, opportunities, and …

Poster Awards Ceremony, Hongyan Ma

INSPIRE-UTC Annual Meetings

• 1st Place: Dongbin Kim, Missouri S&T, A Human-Embodied Drone for Dexterous Aerial Manipulation
• 2nd Place: Yu Otsuki, Georgia Tech, Autonomous ultrasonic thickness measurement using Martlet wireless sensing system integrated with a steel climbing mobile robot
• 3rd Place: Pu Jiao, Missouri S&T, INSPIRE UTC Bridge Inspection Field Campaign Update, 2021

On The Automation, Optimization, And In-Orbit Validation Of Intelligent Satellite Constellation Operations, Gregory Stock, Juan A. Fraire, Holger Hermanns, Eduardo Cruz, Alastair Isaacs, Zhana Imbrosh

Small Satellite Conference

Recent breakthroughs in technology have led to a thriving “new space” culture in low-Earth orbit (LEO) in which performance and cost considerations dominate over resilience and reliability as mission goals. These advances create a manifold of opportunities for new research and business models but come with a number of striking new challenges. In particular, the size and weight limitations of low-Earth orbit small satellites make their successful operation rest on a fine balance between solar power infeed and the power demands of the mission payload and supporting platform technologies, buffered by on-board battery storage. At the same time, these satellites …

A Novel Approach To An Autonomous And Dynamic Satellite Control System Using On-Orbit Machine Learning, Maximum Wilder-Smith, Michael Pham, Matteo Gironda, Kevin Kwik, Michael Gee, Ryan Toomer, Samuel Bennett, Nicholas Shewchuk, Ashley Mcbean, Tarek Elsharhawy

Small Satellite Conference

Classical control methods require deep analytical understanding of the system to be successfully controlled. This can be particularly difficult to accomplish in space systems where it is difficult, if not impossible, to truly replicate the operational environment in a laboratory. As a result, many missions, especially in the CubeSat form factor, fly with control systems that regularly fail to meet their operational requirements. Failure of a control system might result in diminished science collection or even a total loss of mission in severe circumstances. Additionally, future SmallSat use cases (such as for orbital debris collection, repair missions, or deep space …

The Flare Network: Vicarious Cal/Val For Earth Observation Satellites, Brandon Russell, Jeff Holt, Christopher Durrell, Will Arnold, David Conran, Arin Jumpasut, Colm Lynch, Stephen Schiller

Small Satellite Conference

Calibration and characterization of radiometric and geospatial performance is necessary for the accurate retrieval of information from Earth Observation platforms. For small satellite constellations, this is especially true to ensure data quality and consistency among multiple craft that lack on-board calibration equipment. The Field Line-of-sight Automate Radiance Exposure (FLARE) Network provides an automated, on-demand calibration solution designed to meet the requirements of both agency and commercial operators by providing NIST traceable data without the need for expensive campaigns o r on-board calibration sources. FLARE radiometric performance has been verified with Landsat 8 – OLI. FLARE was successfully utilized with Planet …

Autonomous Systems Validation (Sysval) Environment For Advancing Mission Operations, Kelsey Doerksen, Karl Fischer

Small Satellite Conference

In order to maintain the health and productivity of satellites, it is crucial to develop a system that can swiftly, accurately, and effectively reproduce the on-orbit workflow and behavior a spacecraft experiences. To achieve this, Planet created the Systems Validation (SysVal) ecosystem; originally developed to validate individual spacecraft subsystem design requirements, and has evolved to encompass satellite concept of operation workflows, innovating test processes while mitigating risks through the ability to rapidly mimic on-orbit activities in a lab environment. SysVal is a fully integrated hardware and software system composed of a ground station network and a mission operations center with …