Digital Commons Network^™

Reframing And [Re]Presenting Evangelism In Oral Cultures : A Case Study Of The Harare West (Mumc) Vabvuwi Choir In Zimbabwe, Irene M. Kabete

ATS Dissertations

No abstract provided.

1990-2020 University Administrative Regulations (Uar), Morehead State University. Office Of The Provost.

Faculty Senate Records

The University Administrative Regulations (UAR) of Morehead State University from 1990 to 2020 that was kept in the Office of the Provost in three-ring binders prior to 2021.

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 …

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.

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 …

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, …

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

Publications

No abstract provided.

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 …

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 …

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 …

Self-Similar Pcosecond Pulse Compression For Supercontinuum Generation At Mid-Infrared Wavelength In Silicon Strip Waveguides, Yujun Cheng, Jinhui Yuan, Chao Mei, Feng Li, Zhe Kang, Binbin Yan, Xian Zhou, Qiang Wu, Kuiru Wang, Xinzhu Sang, Keping Long, Chongxiu Yu, Gerald Farrell

Articles

Self-similar pulse compression has important application in highly coherent supercontinuum (SC) generation. In this paper, we numerically present the mid-infrared self-similar picosecond pulse compression in a tapered suspended silicon strip waveguide, which is designed with exponentially decreasing dispersion profile along the direction of propagation. When the variation of the Kerr nonlinear coefficient ��(z), linear and nonlinear losses, higher-order nonlinearity, and higher-order dispersion are taken into consideration, the simulation result shows that a 1 ps input pulse centered at wavelength 2.8 μm could be self-similarly compressed to 47.06 fs in a 3.9-cm waveguide taper, along with a compression factor ��c of …

Applications Of Artificial Intelligence To Cryptography, Jonathan Blackledge, Napo Mosola

Articles

This paper considers some recent advances in the field of Cryptography using Artificial Intelligence (AI). It specifically considers the applications of Machine Learning (ML) and Evolutionary Computing (EC) to analyze and encrypt data. A short overview is given on Artificial Neural Networks (ANNs) and the principles of Deep Learning using Deep ANNs. In this context, the paper considers: (i) the implementation of EC and ANNs for generating unique and unclonable ciphers; (ii) ML strategies for detecting the genuine randomness (or otherwise) of finite binary strings for applications in Cryptanalysis. The aim of the paper is to provide an overview on …

A Conceptual Model To Explain Dark Matter And Dark Energy, Jonathan Blackledge

Articles

t This paper considers a conceptual model that attempts to explain ‘Dark Matter’ and ‘Dark Energy’. The model is based on considering a gravitational field to be the result of a mass (a Higgs field) scattering pre-existing cosmic background space-time waves or ‘Uber-waves’. The term ‘Uber’ is used to denote an outstanding or supreme example of a particular kind of gravitational wave with cosmic-scale wavelengths that are far in excess of those associated with the gravitational waves generated by accelerating masses. Such waves are taken to be the very lowest frequency components associated with the spectrum of space-time waves generated …

Reformulating The Binary Masking Approach Of Adress As Soft Masking, Ruairí De Fréin

Articles

Binary masking forms the basis for a number of source separation approaches that havebeen successfully applied to the problem of de-mixing music sources from a stereo recording.A well-known problem with binary masking is that, when music sources overlap in the time-frequencydomain, only one of the overlapping sources can be assigned the energy in a particulartime-frequency bin. To overcome this problem, we reformulate the classical pan-pot source separationproblem for music sources as a non-negative quadratic program. This reformulation gives rise toan algorithm, called Redress, which extends the popular Adress algorithm. It works by definingan azimuth trajectory for each source based on …

A Wide Frequency Scanning Printed Bruce Array Antenna With Bowtie And Semi-Circular Elements, Zeeshan Ahmed, Patrick Mcevoy, Max Ammann

Articles

A printed edge-fed counterpart of the wire Bruce array antenna, for frequency scanning applications, is presented in this paper. The unit-cell of the proposed antenna consists of bowtie and semi-circular elements to achieve wide bandwidth from below 22 GHz to above 38 GHz with open-stopband suppression. The open-stopband suppression enables a wide seamless scanning range from backward, through broadside, to forward endfire. A sidelobe threshold level of −10 dB is maintained to evaluate efficient scanning performance of the antenna. The antenna peak realized gain is 15.30 dBi, and, due to its compact size, has the ability to scan from −64° …

Spectral Dependence Of Transmission Losses In High-Index Polymer Coated No-Core Fibers, Xiaokang Lian, Gerald Farrell, Qiang Wu, Wei Han, Changyu Shen, Youqiao Ma, Yuliya Semenova

Articles

A high-index polymer coated no-core fiber (PC-NCF) is effectively a depressed core fiber, where the light is guided by the anti-resonant, inhibited coupling and total internal reflection effects and the dispersion diagram shows periodic resonant and anti-resonant bands. In this paper, the transmission spectra of the straight and bent PC-NCFs (length > 5 cm) are measured and analyzed from a modal dispersion perspective. For the purpose of the study, the PC-NCFs are contained within a fiber hetero-structure using two single-mode fiber (SMF) pigtails forming a SMF-PC-NCF-SMF structure. The anti-resonance spectral characteristics are suppressed by the multimode interference in the PC-NCF with …

The Effect Of High Background And Dead Time Of An Ingaas/Inp Single-Photon Avalanche Photodiode On The Registration Of Microsecond Range Near-Infrared Luminescence, P. S. Parfenov, A. P. Litvin, D. A. Onishchuk, K. A. Gonchar, Kevin Berwick, A. V. Fedorov, A. V. Baranov

Articles

The effects of a high background count and a microsecond dead time interval on a gated InGaAs/InP single-photon avalanche photodiode (SPAD) during microsecond luminescence decay registration are discussed. It is shown that the background count rate of the SPAD limits its use for time-resolved and steady-spectral measurements, and that a “pile-up” effect appears in the microsecond range.

Carbon-Based Interlayers In Perovskite Solar Cells, Aleksandr P. Litvin, Xiaoyu Zhang, Kevin Berwick, Anatoly V. Fedorov, Weitao Zheng, Alexander V. Baranov

Articles

Perovskites are solution-processed, high-performance semiconductors of interest in low-cost photovoltaics. The interfaces between the perovskite photoactive layers and the top and bottom contacts are crucial for efficient charge transport and minimizing trapping. Control of the collection of charge carriers at these interfaces is decisive to device performance. Here, we review recent progress in the realization of efficient perovskite solar cells using cheap, easily processed, stable, carbon-based interlayers. Interface materials including graphene, carbon nanotubes, fullerenes, graphene quantum dots and carbon dots are introduced and their influence on device performance is discussed.

Application Of Demand Response To Improve Voltage Regulation With High Dg Penetration, Chittesh Veni Chandran, Malabika Basu, Keith Sunderland, Shivananda Pukhrem, João Catalão

Articles

The ability of a consumer friendly demand response based voltage control (DR-VC) program to improve the voltage regulation in a low voltage distribution network (LVDN) with high penetration of DG is investigated. The use of active and reactive power management to regulate the nodal voltage in a distribution network with simple incremental reduction algorithm, in conjunction with DR, is proposed as a solution for over voltage and undervoltage issues in the LVDN. The algorithm micromanages the load and generation in the network enabling the operator to utilize grid resources economically and efficiently while maintaining fairness between consumers with minimum inconvenience. …

Towards A Rapid Screening Of Liver Grafts At The Operating Room Using Mid-Infrared Spectroscopy, David Perezguaita, Marta Moreno Torres, Ramiro Jover, Eugenia Pareja, Bernard Lendl, Julia Kuligowsky, Guillermo Quintas

Articles

The estimation of steatosis in a liver graft is mandatory prior to liver transplantation, as the risk of graft failure increases with the level of infiltrated fat. However, the assessment of liver steatosis before transplantation is typically based on a qualitative or semiquantitative characterization by visual inspection and palpation and histological analysis. Thus, there is an unmet need for transplantation surgeons to have access to a diagnostic tool enabling an in situ fast classification of grafts prior to extraction. In this study, we have assessed an attenuated total reflection−Fourier transform infrared (ATR−FTIR) spectroscopic method compatible with the requirements of an …

In-Situ Ellipsometric Study Of The Optical Properties Of Ltl-Doped Thin Film Sensors For Copper(Ii) Ion Detection, Dervil Cody, Tsvetanka Babeva, Violeta Madjarova, Anastasia Kharchenko, Sabad-E- Gul, Svetlana Mintova, Christopher J. Barrett, Izabela Naydenova

Articles

Optical sensors fabricated in zeolite nanoparticle composite films rely on changes in their optical properties (refractive index, n, and thickness, d) to produce a measurable response in the presence of a target analyte. Here, ellipsometry is used to characterize the changes in optical properties of Linde Type L (LTL) zeolite thin films in the presence of Cu2+ ions in solution, with a
view to improving the design of optical sensors that involve the change of n and/or d due to the adsorption of Cu2+ ions. The suitability of two different ellipsometry techniques (single wavelength and spectroscopic) for the evaluation of …

Herpes Simplex Virus 1 Targets Irf7 Via Icp0 To Limit Type I Ifn Induction, David Shahnazaryan, Rana Khalil, Claire Wynne, Caroline A Jefferies, Joan Ní Gabhann-Dromgoole, Conor C Murphy

Articles

Herpes simplex keratitis (HSK), caused by herpes simplex virus type 1 (HSV‑1) infection, is the commonest cause of infectious blindness in the developed world. Following infection the virus is initially suspended in the tear film, where it encounters a multi‑pronged immune response comprising enzymes, complement, immunoglobulins and crucially, a range of anti‑viral and pro‑inflammatory cytokines. However, given that HSV‑1 can overcome innate immune responses to establish lifelong latency throughout a susceptible individual’s lifetime, there is significant interest in understanding the mechanisms employed by HSV‑1 to downregulate the anti‑viral type I interferon (IFN) mediated immune responses. This study aimed to investigate …