Digital Commons Network^™

Rapid Assessment Of Breast Tumor Margins Using Deep Ultraviolet Fluorescence Scanning Microscopy, Tongtong Lu, Julie M. Jorns, Mollie Patton, Renee Fisher, Amanda Emmerich, Todd Doehring, Taly Gilat-Schmidt, Dong Hye Ye, Tina Yen, Bing Yu

Biomedical Engineering Faculty Research and Publications

Significance: Re-excision rates for women with invasive breast cancer undergoing breast conserving surgery (or lumpectomy) have decreased in the past decade but remain substantial. This is mainly due to the inability to assess the entire surface of an excised lumpectomy specimen efficiently and accurately during surgery.

Aim: The goal of this study was to develop a deep-ultraviolet scanning fluorescence microscope (DUV-FSM) that can be used to accurately and rapidly detect cancer cells on the surface of excised breast tissue.

Approach: A DUV-FSM was used to image the surfaces of 47 (31 malignant and 16 normal/benign) fresh breast tissue samples stained …

A Size‐Modified Poisson–Boltzmann Ion Channel Model In A Solvent Of Multiple Ionic Species: Application To Voltage‐Dependent Anion Channel, Dexuan Xie, Said H. Audi, Ranjan K. Dash

Biomedical Engineering Faculty Research and Publications

We present a new size‐modified Poisson–Boltzmann ion channel (SMPBIC) model and use it to calculate the electrostatic potential, ionic concentrations, and electrostatic solvation free energy for a voltage‐dependent anion channel (VDAC) on a biological membrane in a solution mixture of multiple ionic species. In particular, the new SMPBIC model adopts a membrane surface charge density and a natural Neumann boundary condition to reflect the charge effect of the membrane on the electrostatics of VDAC. To avoid the singularity difficulties caused by the atomic charges of VDAC, the new SMPBIC model is split into three submodels such that the solution of …

Astro2020 Apc White Paper. 2020 Vision: Towards A Sustainable Oir System, Sally Oey, Terry D. Oswalt, Tom Maccarone, Fred Walter, Charles Bailyn, Jay Gallagher, Todd Henry, Derek Buzasi, J. Allyn Smith, Rachael Beaton, Jim Webb, Brad Barlow, Misty Bentz, Leslie Hebb, Patrick Kelly, Jedidah Isler, Michael Meyer, John Salzer, Simone Scaringi

Publications

Open-access telescopes of all apertures are needed to operate a competitive and efficient national science program. While larger facilities contribute light-gathering power and angular resolution, smaller ones dominate for field of view, time-resolution, and especially, total available observing time, thereby enabling our entire, diversely-expert community. Smaller aperture telescopes therefore play a critical and indispensable role in advancing science. Thus, the divestment of NSF support for modest-aperture (1 – 4 m) public telescopes poses a serious threat to U.S. scientific leadership, which is compounded by the unknown consequences of the shift from observations driven by individual investigators to survey-driven science. Given …

Infographic: Black Unicorns - Pre-College Access To Stem And Non-Revenue Sports, Kobe Reese, Leroy Long Iii, Morris R. Council Iii, Sharnnia Artis

Publications

This infographic was created to support the article titled Black Unicorns: STEM Access for Black Student-Athletes in Non-Revenue Sports. The article is for the 3rd Annual Conference of CoNECD - Collaborative Network for Engineering and Computing Diversity. The infographic covers Black students' pre-college access to non-revenue generating sports and STEM. Suggested recommendations are included.

Infographic: Division 1 - Power 5 Football Stars In Stem, Sydney Jones, Leroy Long Iii

Publications

In this infographic, football stars studying degrees in science, technology, engineering, and math (STEM) are showcased. The infographic focuses on racial/ethnic minoritized students who pursue STEM degrees and play football at a university in a National Collegiate Athletic Association (NCAA) Division 1 - Power 5 conference. For each football star, their name, university and major are included. While pursuing majors such as biology, engineering and psychology, these diverse individuals provide counterexamples of who can pursue rigorous majors and high-demand sports.

Infographic: Career Readiness Challenge (Crc) Summary, Melanie Canfield, Leroy Long Iii, James J. Pembridge, Matthew Verleger Dr.

Publications

This infographic summarizes the final report from a study titled, Gamified Online Platform to Support Student-Athlete Career Readiness, funded by the NCAA Innovations in Research and Practice Grant Program. The purpose of the study was to create a gamified online career readiness program to enhance attitudes towards career planning and support the translation of professional competencies. Over a span of seven weeks, 116 student-athletes from Embry-Riddle Aeronautical University (ERAU) - Daytona Beach participated in the study. The student-athletes competed in three different sports. Among ERAU student-athletes, the highest contribution of professional competencies involved: a) leadership, b) communication and c) collaboration. …

Book Review: High-Impact Practices In Online Education, Emily Faulconer

Publications

This document is Dr. Faulconer’s review of High-Impact Practices in Online Education, 2018. 221p ISBN 978-1-62036-847-3 (paperback), $35.00.

Examining The Qualities Of Online And Offline Friendships: A Comparison Between Groups, Christina M. Frederick, Tianxin Zhang

Publications

Online social technologies are now used by a majority of individuals in the U.S. (Pew, 2018a). Sending emails, texting, posting on social media sites, and connecting with others through online gaming open up our social networks to a wider range of individuals. As a result, it is not uncommon to develop friendships with others that are conducted primarily in an online environment. However, we know little about the qualities of online friendships and how they may, or may not, differ from traditional face to face friendships. The present study focused on exploring friendship quality in online and offline domains using …

Supporting Safety Culture In Academia: Giving A Voice To Faculty, Emily K. Faulconer, Chelsea A. Lenoble

Publications

In the words of Sir Winston Churchill, “The difference between mere management and true leadership is communication.” Department leaders have a vital role to play at all institutional levels when it comes to achieving an optimal safety culture that promotes safety voice behavior.

At the university level, this role is to help the university develop a solid foundation that will support a strong safety culture. At this level, it can be a challenge to mobilize and sustain the necessary resources to effectively develop and communicate a clear, consistent message that is aligned with implicit and explicit reward structures.

Leading The Charge To Implement Strategic Engagement Initiatives To Capture Enhanced Online Learning Opportunities, Peter O'Reilly

Publications

Presentation objectives:

• Making Online Courses Feel More Like In-Person Courses
• Discussion on Various Effective Engagement Activities
• Results of Engagement Activities Pilots
• Next Steps…

Suborbital Payload Testing Aboard Level 3 Rocket Research Platform, Pedro Llanos, Sathya Gangadharan, Nikita Amberkar, Isachi Halphen, Melisa Mastroliberti, Michelle Munasinghe

Publications

Embry-Riddle Aeronautical University (ERAU) has launched several suborbital scientific payloads aboard Blue Origin’s New Shepard in 2017 and 2019. Students continue gaining hands-on experience in rocket design and construction, and payload integration and testing of future and more mature payloads to be launched into space. A Level 3 Rocket is being designed and developed at ERAU to serve as a scaled-down model research platform for launching and testing of payloads that will be later flown in commercial suborbital platforms such as Blue Origin’s New Shepard and PLD space Miura 1 rockets. Computer simulations were conducted to calculate the key parameters …

Islam, Emad Hamdeh

Publications

Islam, the religion of 1.2 billion people around the world, provides its followers guidance on how to live according to God’s teachings. The word “Islam” means submission, and in this context, refers to voluntary submission to will and teachings of God. The word Islam stems from the same root word as “peace” salām, by submitting to God one finds inner peace in this world and eternal peace and happiness in the next.

Transitioning Out Of Leadership: Is There Life After Higher Administration?, Christina M. Frederick, Alvin Y. Wang, Jane S. Halonen

Publications

This article showcases the case histories of three former higher education administrators who stepped down from their responsibilities to rejoin the faculty. From their collective experiences, they extracted the variables that tend to influence the change in professional trajectory. The authors explain how an assortment of cognitive biases can influence the success or failure of downward transitions. We conclude the article with suggestions regarding how to make a successful transition from academic administration back to faculty status.

Examining Gender And Enjoyment: Do They Predict Job Satisfaction And Well-Being?, Christina M. Frederick, Elizabeth H. Lazzara

Publications

Within organizations, happiness of employees is of key importance, and researchers have theorized that work happiness is comprised of positive well-being and job satisfaction (Sgroi, 2015; Wright & Cropanzano, 2000). However, women experience the workplace differently than their male counterparts (Clark, 1997). In the present study, we examine how female leaders and non-leaders (compared to male leaders and non-leaders), experience well-being and job satisfaction, as well as how work enjoyment predicts well-being and job satisfaction. Participants (286 women and 255 men) completed a demographic measure, the Subjective Vitality Scale (Ryan & Frederick, 1997), the Job Satisfaction Survey (Macdonald & McIntyre, …

Pennsylvania’S Covid-19 Response Vs. Homeland Security Frameworks And Research: Masking The Whole Community, Alexander Siedschlag

Publications

This essay offers an intermediate discussion of select policy, strategic, operational, and tactical issues that demonstrate where and how the Commonwealth of Pennsylvania’s novel coronavirus response on the one hand, and homeland security frameworks and research on the other, converge or—more often so—diverge, and how to narrow this gap. Although typically framed as a pandemic owned by the public health sector, the COVID-19 response falls directly within the homeland security mission space, whose core missions include “Ensuring Resilience to Disasters.” In some respects, Pennsylvania’s response exemplifies best practices suggested by research. In other dimensions, it is neither in line with …

Monte Carlo Simulations Of Coupled Transient Seepage Flow And Compressive Stress In Levees, Fred Thomas Tracy, Ghada Ellithy, Jodi L. Ryder, Martin T. Schultz, Benjamin R. Breland, T. Chris Massey, Maureen K. Corcoran

Publications

The purpose of this research is to compare the results from two different computer programs of flow analyses of two levees at Port Arthur, Texas where rising water of a flood from Hurricane Ike occurred on the levees. The first program (Program 1) is a two-dimensional (2-D) transient finite element program that couples the conservation of mass flow equation with accompanying hydraulic boundary conditions with the conservation of force equations with accompanying x and y displacement and force boundary conditions, thus yielding total head, x displacement, and y displacement as unknowns at each finite element node. The second program (Program …

Meeting At The Crossroads: A Dialogue Navigating The Intersections Between International Education And Social Justice, Aaron D. Clevenger, Linwood Whitten

Publications

No abstract provided.

Set And Spike: Mentoring A Student-Athlete In Stem For Undergraduate Engineering Education Research, Leroy Long Iii, Mckenna D. Gooch

Publications

It is well known that student-athletes are more diverse and higher academic achievers, on average, than their collegiate peers. However, little research has explored the mentoring relationships of student-athletes who conduct undergraduate research. Unique challenges and opportunities exist for student-athletes and faculty when it comes to mentoring undergraduate research in fields like science, technology, engineering and math (STEM). Using a collaborative autoethnographic methodological approach and apprenticeship theory, our personal narratives detail how an engineering professor mentored a former engineering student-athlete for undergraduate engineering education research. We offer several findings and recommendations.

Remember To Color: How Coloring Impacts Elderly Mental Health And Working Memory, Griselda Alaves

UNF Graduate Theses and Dissertations

In the study of gerontology, mild cognitive impairment (MCI) has received much attention as it is the progressive stage before Alzheimer’s disease (AD). According to lifespan studies, people with MCI advance to AD at a much-accelerated pace than people without MCI. In this study, I am investigating whether art activities (coloring versus drawing) has any influence on the elderly’s levels of stress and anxiety. More specifically, current research in art therapy points to a significant reduction in participant’s stress and anxiety levels after being involved in coloring and drawing activities. In addition to mental health, I am also investigating how …

Cheater, Cheater: Examination Of Children's Lying For Different Motivations, Tessa Delaney Hendrix

UNF Graduate Theses and Dissertations

The current study examined children’s lie-telling behavior across three motivational contexts. There were 32 children (M = 5.08 years, SD = 0.53) who participated in four experimental paradigms to examine the differences among antisocial and prosocial lying during preschool age years. Children were assessed on overall peer relations and working memory cognitive measures to gain a better understanding of how our social worlds and developmental trajectories affect the types of lies told. Results revealed children’s lie-telling was not uniform across the sequential motivational contexts. Children utilized both lie types depending on the perceived severity or social influence, but at …

Investigation Of Vapor Deposited Conduction Seed Layer For Electrodeposition On Polymers, Olivia Bray

UNF Graduate Theses and Dissertations

The use of three-dimensional printing (3d printing) technologies are becoming increasingly popular in today’s society due to the time and cost advantages associated with these processes. In industries with a high demand for customizable and one-of-a-kind parts at a low volume, these additive manufacturing processes offer a promising solution. Surgical devices are a great example of this demand. Despite the advantages offered by 3d printing, the mechanical integrity of these 3d printed parts are often not comparable to the solid metal parts that have historically been used. In an effort to create a superior part and reach operational requirements, reinforcement …

Diabetes Risk Status And Physical Activity In Pregnant Women: U.S. Brfss 2011, 2013, 2015, 2017, Bethany Rand

UNF Graduate Theses and Dissertations

Objective: We sought to examine differences in aerobic activity (AA) and muscle-strengthening activity (MSA) by diabetes risk status (DRS) among pregnant women in the United States.

Background: Pregnant women without complications are advised to engage in physical activity (PA) to mitigate adverse outcomes. Differences may exist among pregnant women of diverging diabetes status in meeting national PA recommendations.

Methods: The sample (n=9,597) included pregnant women ages 18-44, who participated in 2011, 2013, 2015, and 2017 Behavioral Risk Factor Surveillance System. Levels of DRS were: no diabetes (ND), high risk for diabetes (HRD) due to self-reported gestational diabetes or …

Basigin As An Immune Mediator In The Cns, Alicia Gonzalez

UNF Graduate Theses and Dissertations

Chronic inflammation is a hallmark of many neurodegenerative disorders. Although the central nervous system (CNS) can stave peripheral pathogens from crossing the blood-brain barrier (BBB) through a network of continuous endothelia, astrocytes, and pericytes, prolonged exposure to a pathogen can comprise this barrier. Basigin, a cell adhesion molecule, is found on the surface of endothelial cells and has been demonstrated to interact with toll-like receptor 4 (TLR4). TLR4 recognizes lipopolysaccharide (LPS), found on the outer membrane of Gram-negative bacteria. The activation of TLR4 produces pro-inflammatory cytokines, like IL-6. The present study aims to address the expression pattern of Basigin gene …

Implementing Welfare Science: Case Studies In Evidence-Based Zoo Management, Marisa Suzanne Spain

UNF Graduate Theses and Dissertations

Animal welfare science is a field that focuses on how we can improve the lives and well-being of animals in human care. Modern welfare science has moved away from simply preventing suffering and on to promoting positive welfare states, a concept that has been coined animal “wellness”. A process called evidence-based zoo management has been implemented in many zoos as a way to promote and ensure wellness. This is the idea that husbandry and housing standards should be evaluated and tested for their efficacy using data rather than relying on traditional best practices. In this manuscript we discuss an informal …

Fggy Carbohydrate Kinase Domain Containing Is Induced During Skeletal Muscle Atrophy And Modulates Map Kinase And Akt Signaling, Anastasia L. Smith

UNF Graduate Theses and Dissertations

Skeletal muscle atrophy can result from a range of physiological conditions, including denervation, immobilization, hindlimb unweighting, and aging. To better characterize the molecular genetic events of atrophy, a microarray was performed using skeletal muscle isolated from mice after 3 and 14 days of denervation and compared to control muscle to identify novel atrophy-induced genes. The microarray revealed that FGGY carbohydrate kinase domain containing (Fggy) is expressed in skeletal muscle and is induced in response to denervation. Bioinformatic analysis of the Fggy gene locus revealed two validated alternative isoforms, that we have termed Fggy-L-552 and Fggy-S-387, which have distinct transcription initiation …

Examining The Impacts Of Virtual Mentoring On College Students' Leadership Efficacy A Quantitative Study Of C.A.M.P Osprey, Justin Michael Lerman

UNF Graduate Theses and Dissertations

Mentoring involves a collaborative and reciprocal sharing of knowledge for professional development. In leadership, a mentor is an individual who currently serves as a leader while guiding someone who aspires to be a leader in the future. This study evaluated how virtual mentoring compares to face-to-face mentoring on the development of leadership self-efficacy for college students. This study undertook a comparative analysis of face-to-face mentoring sessions and virtual mentoring sessions to explore the research question and hypotheses. The mentoring process involved a dyadic relationship where personalities create a positive and effective learning experience. A comparative analysis permitted the study to …

Pbis Implementation And Sustainability: Primary Educators’ Perspectives Of Success, Melissa S. Ley

UNF Graduate Theses and Dissertations

Today the school-wide behavior management program, Positive Behavioral Interventions and Supports, or PBIS, follows the Multi-Tiered Systems of Support (MTSS) framework when addressing students with behavior challenges in general education classrooms. PBIS provides a collaborative framework of problem solving and evidence-based strategies, thus proactively meeting students’ overall needs. The purpose of this study is to fill a gap in the literature pertaining to teacher perspectives of using PBIS practices in their classroom across this framework. This dissertation further details implications for training and professional development concerning school-wide PBIS as well as the organizational structures necessary for success in the classroom. …

Accounting For The Local Field When Determining The Dielectric Loss Spectra Of Metals In The Region Of The Frequencies Of Volume, Surface And Localized Plasmon Oscillations, Tatiana Perova, Igor Shaganove, Kevin Berwick

Articles

The optical constant of bulk metal is used to determine the dispersion of the local field under one-dimensional (1D), two-dimensional (2D) and three-dimensional (3D) confinement. 3D confinement, expressed as ε mic 2 (ω3D), corresponds to the dielectric loss spectra of spherical particles with a diameter, d, much less than the wavelength of the beam used to measure the spectrum (d << λ). Excellent agreement with the results of Mie theory and experimental data for solid colloids within alkali halide crystals was observed. The function expressed as ε mic 2 (ω1D) allows the measurement of spectral micro-characteristics in the frequency range of the longitudinal collective motion of the free electrons. This corresponds to the spectrum of dielectric losses of bulk plasma oscillations. The function ε mic 2 (ω2D) describes the spectra of the dielectric losses of surface plasma oscillations in thin metal films. It is shown that the peak positions of ε mic 2 (ω3D), ε mic 2 (ω2D) and ε mic 2 (ω1D) spectra for simple metals, viz. alkali metals as well as Al, Be, Mg, Ga, In, Sn and Si, are in agreement with experimental results from electron-energy-loss spectroscopy and various optical techniques.

Covid-19: A Simple Curve Approximation Tool, Jane Courtney

Articles

In the current COVID-19 pandemic, much focus is put on ‘flattening the curve’. This ‘curve’ refers to the cases versus time graph, which shows the rise of a disease to its peak before descending. The aim in a pandemic is to flatten this curve by reducing the peak and spreading out the timeline. However, the models used to predict this curve are often not clearly outlined, no model parameters are given, and models are not tested against real data. This lack of detail makes it difficult to recreate the curve from these models. What is much needed is a simple …

Performance Investigation Of Peak Shrinking And Interpolating The Papr Reduction Technique For Lte-Advance And 5g Signals, Somayeh Mohammady, Ronan Farrell, David Malone, John Dooley

Articles

Orthogonal frequency division multiplexing (OFDM) has become an indispensable part of waveform generation in wideband digital communication since its first appearance in digital audio broadcasting (DAB) in Europe in 1980s, and it is indeed in use. As has been seen, the OFDM based waveforms work well with time division duplex operation in new radio (NR) systems in 5G systems, supporting delay-sensitive applications, high spectral efficiency, massive multiple input multiple output (MIMO) compatibility, and ever-larger bandwidth signals, which has demonstrated successful commercial implementation for 5G downlinks and uplinks up to 256-QAM modulation schemes. However, the OFDM waveforms suffer from high peak …