Digital Commons Network^™

Investigating Community Of Inquiry And Cognitive Load, Emily K. Faulconer, Darryl Chamberlain, Beverly Wood

Publications

This project will design and research a pilot program for infusing best practices into online discussion forums in STEM courses to reduce extraneous load, improve instructional presence, instructor social presence, student social presence, and student cognitive presence.

Community Of Inquiry And Cognitive Load In Online Stem: Transferability Plan, Emily Faulconer, Darryl Chamberlain, Beverly Wood

Publications

This document presents evidence in support of the Community of Inquiry and Cognitive Load Framework (Supported by NSF #204430), with Guidance on translating this framework to additional contexts within the studied institution and beyond.

Gathering Nuanced Data For Understanding Student Withdrawals, Beverly Wood, Emily Faulconer, Darryl Chamberlain

Publications

This white paper argues that the current system for collecting data on student withdrawals at their university is inadequate. The current withdrawal form lacks detail and makes it difficult to understand the reasons why students leave courses. This is a problem because it hinders efforts to improve student persistence (completion of courses).

Key Points:

• The university's strategic plan emphasizes student experience, enrollment management, and academic excellence. High withdrawal rates undermine these goals.
• Researchers developed a research-based nuanced framework for understanding withdrawal reasons.
• The current withdrawal form offers limited options for students to explain why they are withdrawing; the current form …

Volumetric Reconstruction Of Ionospheric Electric Currents From Tri-Static Incoherent Scatter Radar Measurements, Jone Peter Reistad, Spencer Mark Hatch, Karl M. Laundal, Kjellmar Oksavik, Matthew David Zettergren, Heikki Vanhamaki, Ilkka I. Virtanen

Publications

We present a new technique for the upcoming tri-static incoherent scatter radar system EISCAT 3D (E3D) to perform a volumetric reconstruction of the 3D ionospheric electric current density vector field, focusing on the feasibility of the E3D system. The input to our volumetric reconstruction technique are estimates of the 3D current density perpendicular to the main magnetic field, $\mathbf{j} \perp$, and its co-variance, to be obtained from E3D observations based on two main assumptions: 1) Ions fully magnetised above the $E$ region, set to 200 km here. 2) Electrons fully magnetised above the base of our domain, set to 90 …

From Crossing Campus To Crossing Continents: Faculty, Chair, And Global Partner Perspectives On An International Sabbatical, Emily Faulconer, Beverly L. Wood, Stephen George-Williams

Publications

A sabbatical – a period of paid leave granted to faculty for research or study - is a construct in higher education that has experienced ebbs and flows in its favorability, though there are persistent arguments that it is important for research-active faculty (Pietsch, 2011). Early career faculty are focused on achieving tenure as this is high stakes at most institutions. Once tenure is achieved, the next goalpost is full professor. The day-to-day responsibilities of faculty can distract from and dilute efforts aimed at strategic planning, long-term planning, and reflection necessary to achieve this level of promotion. So it follows …

Interferometric Imaging With Eiscat_3d For Fine-Scale In-Beam Incoherent Scatter Spectra Measurements, M. Zettergren, Devin Huyghebaert, Björn Gustavsson, Juha Vierinen, Andreas Kvammen, John Swoboda, Ilkka Virtanen, Spencer Hatch, Karl M. Laundal

Publications

The 233 MHz EISCAT_3D radar system currently under construction in northern Fennoscandia will be able to resolve ionospheric structures smaller than the transmit beam dimensions through the use of interferometric imaging. This capability is made possible by the modular design and digitization of the 119 91-antenna panels located at the main Skibotn site. The main array consists of a cluster of 109 panels, with 10 outlier panels producing unique interferometry baselines. In the present study synthesized incoherent scatter radar signal measurements are used for interferometric imaging analysis with the EISCAT_3D system. The Geospace Environment Model of Ion-Neutral Interactions (GEMINI) model …

The Effects Of Social Media On Investment Decisions Within An Online Community, Hector Vasquez, David Cross

Publications

This case study examined the effects of social media on investment decisions within an online community. The problem was the use of misinformation by inexperienced investors to make investment decisions, with investors making investment decisions based on misinformation. Data was gathered through an online questionnaire administered through one-on-one interviews with members from an online financial community. Twenty participants were gathered; responses were analyzed for recurring themes. Results validated a relationship between social media and investment decisions exists. A strongly recurring theme was that individual investors use social media as a resource to seek out potential investment ideas and make investment …

Density And Magnetic Field Asymmetric Kelvin‐Helmholtz Instability, Xuanye Ma, Peter Delamere, Katariina Nykyri, Antonius Otto, Stefan Eriksson, Lihui Chai, Brandon Burkholder, Andrew Dimmock, Yu-Lun Liou, Shiva Kavosi

Publications

The Kelvin‐Helmholtz (KH) instability can transport mass, momentum, magnetic flux, and energy between the magnetosheath and magnetosphere, which plays an important role in the solar‐wind‐ magnetosphere coupling process for different planets. Meanwhile, strong density and magnetic field asymmetry are often present between the magnetosheath (MSH) and magnetosphere (MSP), which could affect the transport processes driven by the KH instability. Our magnetohydrodynamics simulation shows that the KH growth rate is insensitive to the density ratio between the MSP and the MSH in the compressible regime, which is different than the prediction from linear incompressible theory. When the interplanetary magnetic field (IMF) …

Farmer Perceptions Of Land Cover Classification Of Uas Imagery Of Coffee Agroecosystems In Puerto Rico, Jose Cabrera, Blake Neal, Kevin Adkins, Ronny Schroeder, Gwendolyn Klenke, Shannon Brines, Nayethzi Hernandez, Kevin Li, Riley Glancy, Ivette Perfecto

Publications

Highly diverse agroecosystems are increasingly of interest as the realization of farms’ invaluable ecosystem services grows. Simultaneously there has been an increased use of uncrewed aerial systems (UAS) in remote sensing as drones offer a finer spatial resolution and faster revisit rate than traditional satellites. With the combined utility of UAS and the attention on agroecosystems, there exists an opportunity to assess UAS practicality in highly biodiverse settings. In this study, we utilized UAS to collect fine-resolution 10-band multispectral imagery of coffee agroecosystems in Puerto Rico. We created land cover maps through a pixel-based supervised classification of each farm and …

Using Trees To See A Forest: Leveraging Machine Learning To Classify Student Thinking, Darryl Chamberlain, Patrick Mcguinness, Emily Faulconer, Beverly Wood

Publications

ChatGPT has caught the world’s attention and has researchers considering the ways artificial intelligence can be integrated into human endeavors (Kasneci et al., 2023). This methodological poster will present a systematic method to apply a particular machine learning classification model, Decision Tree (Song & Lu, 2015), to perform and extend the scale of qualitative analysis in mathematics education research.

Human Factors In Aviation Maintenance: Understanding Errors, Management, And Technological Trends, Rajee Olaganathan

Publications

Aircraft maintenance and inspection are complex systems that work on a time-based schedule and require teamwork of different professionals to maintain the airworthiness of aircraft. Errors in maintenance and inspection processes cause in-flight engine shutdowns, flight delays, flight cancellation, sometimes resulting in accidents and incidents that cause significant economic consequences. Due to the substantial impact on both safety and financial aspects of an air carrier, this paper focuses on hangar maintenance as the work is carried out across several shifts by different technicians, addressing various human factor issues that contribute to errors. The paper will also briefly discuss shift work …

Narrative World Building: Creative Applications For Gamification In Study Abroad, Ashley Lear

Publications

This study examined a cohort of 12 study abroad participants taking a course on video game topography and narrative in Salamanca, Spain, to determine how inhabiting and co-creating narrative worlds as part of the coursework might impact the experiences of the students inside and outside of the classroom as they engaged in mandated and optional cultural engagement activities, such as museum tours and excursions to historical sites. Students completed two gameful learning activities: 1) they co-created their own narrative game world in a group game proposal assignment drawing upon research from storytelling through game environments, and 2) they created independent …

Yoga’S Journey From East To West: A Tale Of Adaptation, Wellness, And Healing The Balancing Act, Christine D. Walck

Publications

Prepare for a unique journey through the world of yoga with an opinionated, funny twist. Join a devout Catholic, a PhD-toting engineering professor, and an extreme athlete as they navigate the intriguing yet mysterious realm of yoga. Their initial skepticism, rooted in Eastern philosophy, quickly dissolves as yoga seamlessly melds with their Catholic faith, offering a universal path to physical and mental well-being. Buckle up for a humorous takedown of common misconceptions about yoga’s compatibility with Western religious beliefs. It’s all about respecting the body, which conveniently aligns with their active (with a dash of clumsy adventures thrown in). Yoga …

Commentary: A Patient-Specific Lower Extremity Biomechanical Analysis Of A Knee Orthotic During A Deep Squat Movement, Christine Dailey Walck

Publications

The recent study by Walck et al., titled “A Patient-Specific Lower Extremity Biomechanical Analysis of a Knee Orthotic during a Deep Squat Movement,” provides a novel insight into the biomechanical impacts of knee orthotics, particularly the non-linear spring-loaded (NLSL) knee joint orthosis (KJO)1 . This commentary aims to delve into the implications, interpretations, and evaluations of the findings, contextualizing them within the broader discourse on knee orthotics.

Immersive Framework For Designing Trajectories Using Augmented Reality, Joseph Anderson, Leo Materne, Karis Cooks, Michelle Aros, Jaia Huggins, Jesika Geliga-Torres, Kamden Kuykendall, David Canales, Barbara Chaparro

Publications

The intuitive interaction capabilities of augmented reality make it ideal for solving complex 3D problems that require complex spatial representations, which is key for astrodynamics and space mission planning. By implementing common and complex orbital mechanics algorithms in augmented reality, a hands-on method for designing orbit solutions and spacecraft missions is created. This effort explores the aforementioned implementation with the Microsoft Hololens 2 as well as its applications in industry and academia. Furthermore, a human-centered design process and study are utilized to ensure the tool is user-friendly while maintaining accuracy and applicability to higher-fidelity problems.

Experimental Environmental Profiles And Sloshing Dynamics Aboard Zero-G Aircraft, Pedro J. Llanos, Sathya Gangadharan, Kevin Crosby

Publications

This study presents the results of a parabolic flight experiment to study the sloshing dynamics of the magneto-active propellant management device experiment. This device utilizes a magnetoactive membrane and magnets located external to the tank to effectively damp the liquid free surface motion. This research work establishes a benchmark with sloshing analytical formulation and sensor calibration methods that can be used to characterize future research parabolic flights while providing important environmental profiles measured during flight, such as accelerations, pitch angle, velocity, temperature, total volatile content, carbon dioxide, relative humidity, magnetic field, and radiation. Correlation between these flight variables and the …

Experimental Analysis Of The Integrated High-Lift Propulsor, Robert W. Deters, Byron Ward, Shreyas Narsipur

Publications

Wind tunnel testing was conducted to evaluate the performance of the Integrated High Lift Propulsor (IHLP), a novel Distributed Electric Propulsion (DEP) system. The IHLP integrates traditional Krueger flap/slat elements with a Distributed Electric Propulsion design, enhancing high lift performance and cruise efficiency compared to conventional pylon-mounted DEP configurations. Starting from a baseline configuration determined from pretest Computational Fluid Dynamics (CFD) analyses, a parametric study was performed to determine the influence on the aerodynamic characteristics (���� , ����, and ����). The study involved variations in flap settings, slat angles, overlap, propeller tilt, and propeller position. The impact of Reynolds number, …

On Progress In Exploring Controlled Viscous Limit-Cycle Oscillations In Modified Glauert Airfoil, Ethan Deweese, Lap Nguyen, Erik Vataker, William Mackunis, Vladimir Golubev, Ron Efrati, Oksana Stalnov

Publications

The paper reports on the progress in the development of a novel robust, nonlinear flow control technology that employs an array of synthetic-jet actuators (SJAs) embedded in 2-DOF, elastically mounted, optimized Modified Glauert (MG) airfoil design in order to control limit cycle oscillations (LCO) at low subsonic flow regimes. The focus here is on the conceptual design of the wind energy harvesting system that employs, e.g., a piezoelectric device to extract energy from plunging LCO, with the closed-loop controller being capable to sustain the required LCO amplitudes over a wide range of wind speeds. The current high-fidelity studies first include …

Guiding Undergraduate Researchers In The Virtual World: Mentoring Experiences Of Globally Distributed Students, Emily Faulconer, Brent Terwilliger, Robert Deters, Kelly George

Publications

The advancement of technology has led to an increase in undergraduate students pursuing degrees online. The translation of undergraduate research to the online environment is relatively new, though gaining momentum, partly due to the COVID-19 pandemic. Mentoring is a key undergraduate research support, particularly for those engaged online, as it fosters a supportive environment for online students to develop their skills and knowledge in their field of study. This study aims to explore the positive impacts of mentoring undergraduate research for fully online students. A single case study methodology was used, with interview data collected from four research mentees completing …

Coming To Your Library Soon: Make All The Things Accessible!, James M. Day, Cody Michaels

Publications

Web accessibility refers to the practice of ensuring that websites, tools, and technologies are designed and developed in a way that allows people with disabilities to use them effectively.

Toward The Unified Theory Of Said-Linked Subauroral Arcs, Evgeny V. Mishin, Anatoly V. Streltsov

Publications

We present a unified approach to subauroral arcs within intense subauroral ion drifts (SAID), which explains the observed transition of a precursor Stable Auroral Red (SAR) arc into Strong Thermal Emission Velocity Enhancement (STEVE). This approach is based on the short-circuiting concept of fasttime SAID as an integral part of a magnetospheric voltage generator between the innermost boundaries of the freshly injected plasma sheet electrons and ring current ions. Here, enhanced plasma turbulence rapidly heats the bulk plasma and accelerates suprathermal non-Maxwellian “tails.” Heat and suprathermal electron transport rapidly elevate the ionospheric electron temperature—the source of a bright SAR arc. …

Bridging Biomedical Research With Aerospace Engineering In The Lab Of Tomorrow, Christine Walck

Publications

“My goal with this lab is to take biomedical research and tie it into a school that is grounded in aerospace and aeronautical engineering,” says Assistant Professor of Mechanical Engineering at Embry-Riddle Aeronautical University’s Daytona Beach Campus, Christine Walck. “How do I make that connection? That’s the question I’ve been working on for the past couple of years with Vicon.”