Digital Commons Network^™

Supporting Teaching With Primary Sources At Brigham Young University: An Ithaka S+R Local Report, J. Gordon Daines Iii, Matthew J. K. Hill, Maggie Kopp, Dainan Skeem

Faculty Publications

“Supporting Teaching with Primary Sources at Brigham Young University: An Ithaka S+R Local Report” is a research study that examines the pedagogical practices of humanities and social science faculty teaching with primary sources at the undergraduate level. The goal of the study is to understand faculty members’ undergraduate teaching processes for the purpose of developing resources and services at Brigham Young University (BYU) to support the faculty in their work. The study is part of a larger research project carried out from 2019-2020 by the Harold B. Lee Library (HBLL) in cooperation with Ithaka S+R, a not-for-profit organization whose aim …

Through-The-Wall Radar Detection Using Machine Learning, Aihua W. Wood, Ryan Wood, Matthew Charnley

Faculty Publications

This paper explores the through-the-wall inverse scattering problem via machine learning. The reconstruction method seeks to discover the shape, location, and type of hidden objects behind walls, as well as identifying certain material properties of the targets. We simulate RF sources and receivers placed outside the room to generate observation data with objects randomly placed inside the room. We experiment with two types of neural networks and use an 80-20 train-test split for reconstruction and classification.

The Invisible Message, Andrew S. Gibbons Iii, Elizabeth Boling

Faculty Publications

The number and variety of messages conveyed by an instructional experience is astonishing, but most designers are unaware of their number, subtlety, and impact. Many of those messages they would not choose to send if they recognized their existence in practice. The design of invisible and abstract message structures receives less attention from designers today than those parts of the design given to more vivid, colorful, and showy surface structures. Invisible message structures work behind the scenes to produce the smooth surface performances in front of the curtain; they are seldom seen directly, but their power is indisputable. The purpose …

Attosecond Synchronization Of Extreme Ultraviolet High Harmonics From Crystals, Giulio Vampa, Jian Lu, Yong Sing You, Denitsa R. Baykusheva, Mengxi Wu, Hanzhe Liu, Kenneth J. Schafer, Mette B. Gaarde, David A. Reis, Shambhu Ghimire

Faculty Publications

The interaction of strong near-infrared (NIR) laser pulses with wide-bandgap dielectrics produces high harmonics in the extreme ultraviolet (XUV) wavelength range. These observations have opened up the possibility of attosecond metrology in solids, which would benefit from a precise measurement of the emission times of individual harmonics with respect to the NIR laser field. Here we show that, when high-harmonics are detected from the input surface of a magnesium oxide crystal, a bichromatic probing of the XUV emission shows a clear synchronization largely consistent with a semiclassical model of electron-hole recollisions in bulk solids. On the other hand, the bichromatic …

Exploring Students’ Cultural Competence Development During A Short-Term International Experience: A Q-Sort Study, Shelli Rampold, Bradley Coleman, J. C. Bunch, Richie Roberts

Faculty Publications

No abstract provided.

Effect Of Dilution On Sedimentational Separation Of Bacteria From Blood, Clifton M. Anderson, William G. Pitt

Faculty Publications

Bacteria must be separated from septic whole blood in preparation for rapid antibiotic susceptibility tests. This work improves upon past work isolating bacteria from whole blood by exploring an important experimental factor: Whole blood dilution. Herein, we use the continuity equation to model red blood cell sedimentation and show that overall spinning time decreases as the blood is diluted. We found that the bacteria can also be captured more efficiently from diluted blood, up to approximately 68 ± 8% recovery (95% confidence interval). However, diluting blood both requires and creates extra fluid that end users must handle; an optimal dilution, …

Additive Manufacturing And Characterization Of Agi And Agi–Al2O3 Composite Electrolytes For Resistive Switching Devices, Benjamin J. Brownlee, Lok-Kun Tsui, Karthik Vempati, John B. Plumley, Brian D. Iverson, Thomas L. Peng, Fernando H. Garzon

Faculty Publications

This work investigates the electrochemical dynamics and performance of additively manufactured composite electrolytes for resistive switching. Devices are comprised of a Ag/AgI–Al₂O₃/Pt stack, where the solid state electrolyte is additively manufactured using extrusion techniques. AgI–Al₂O₃ composite electrolytes are characterized by x-ray diffraction and electrochemical impedance spectroscopy. The ionic conductivities of the electrolytes were measured for different concentrations of Al₂O₃, observing a maximum conductivity of 4.5 times the conductivity of pure AgI for composites with 20 mol. % Al₂O₃. There was little change in activation energy …

Discovery Of Exosomes From Tick Saliva And Salivary Glands Reveals Therapeutic Roles For Cxcl12 And Il-8 In Wound Healing At The Tick–Human Skin Interface, Wenshuo Zhou, Faizan Tahir, Joseph Che Yen Wang, Michael Woodson, Michael B. Sherman, Shahid Karim, Girish Neelakanta, Hameeda Sultana

Faculty Publications

© Copyright © 2020 Zhou, Tahir, Wang, Woodson, Sherman, Karim, Neelakanta and Sultana.Ticks secrete various anti-coagulatory, anti-vasoconstrictory, anti-inflammatory, and anti-platelet aggregation factors in their saliva at the bite site during feeding to evade host immunological surveillance and responses. For the first time, we report successful isolation of exosomes (small membrane-bound extracellular signaling vesicles) from saliva and salivary glands of partially fed or unfed ixodid ticks. Our data showed a novel role of these in vivo exosomes in the inhibition of wound healing via downregulation of C-X-C motif chemokine ligand 12 (CXCL12) and upregulation of interleukin-8 (IL-8). Cryo-electron microscopy (cryo-EM) analysis …

Implicit And Explicit Childhood Financial Socialization: Protective Factors For Marital Financial Disagreements, Ashley Larsen Gibby, Logan Pettit, E. Jeffrey Hill, Jeremy Yorgason, Erin Kramer Holmes

Faculty Publications

Research to date has shown that childhood financial socialization is significantly associated with the financial attitudes and behaviors of children, youth, and adults. However, the extent to which childhood financial socialization is connected to marital outcomes remains largely unknown. Using data from 1,473 newly married couples who participated in a nationally representative study, we examined the relationship between childhood financial socialization and reported marital financial disagreements by utilizing actor-partner interdependence structural equation models (APIM SEM). Our results suggest that implicit (i.e. parental modeling) and explicit (i.e. direct conversations or experiential learning) financial socialization significantly and negatively relate to marital financial …

Struggling To Breathe: Covid-19, Protest, And The Lis Response, Amelia N. Gibson, Renate Chancellor, Nicole A. Cooke, Sarah Park Dahlen, Beth Patin, Yasmeen Shorish

Faculty Publications

The purpose of this article is to provide a follow up to “Libraries on the Frontlines: Neutrality and Social Justice,” which was published in 2017. It addresses institutional responses to protests and uprising in the spring and summer of 2020 after the deaths of Ahmaud Arbery, Breonna Taylor, and George Floyd—all of which occurred in the context of the global COVID-19 pandemic. The article expands the previous call for libraries to take a stand for Black Lives. We describe the events of 2020 (a global pandemic, multiple murders of unarmed Black people, and the consequent global protests) and responses from …

To Share Or Not To Share: The Optimal Advertising Effort With Asymmetric Advertising Effectiveness, Qingying Li, Hao Ding, Tianqin Shi, Yanli Tang

Faculty Publications

In this paper, we study a two-stage model in which a manufacturer expands to a new market through a local retailer and has private information on the advertising effectiveness. The manufacturer chooses the information sharing format with the retailer, either no information sharing or mandatory information sharing. Under no information sharing format, the manufacturer and the retailer play a signaling game. We derive both separating and pooling equilibria and conduct equilibrium refinements for the signaling game. Under mandatory information sharing format, the manufacturer simply informs the retailer the advertising effectiveness. We also establish the stylized model and derive the optimal …

Variation In Masculinities And Fathering Behaviors: A Cross-National Comparison Of The United States And Canada, Kevin Shafer, Richard J. Petts, Casey Scheibling

Faculty Publications

Research continues to examine the barriers to and facilitators of positive fathering behaviors. One area recently addressed by researchers focuses on the relationship between masculine norm adherence and father involvement. Yet, little work has examined cross-national variability in this relationship—despite differences in gender norms, fathering expectations, and social policies across countries. The present study considers possible differences in the relationship between masculine norm adherence and fathering behaviors in the United States and Canada—two rich, multiethnic countries with many similarities but some distinct policy and family support differences. Using data from fathers in Canada (n = 2057) and the United …

Applications Of Open Innovation To The Supply Chain System In The Smes, Taeho Park, Tianqin Shi, Ming Zhou, Shu Zhou

Faculty Publications

The close-knitted structure of a supply chain seems to leave no room for the word 'open'. Closeness builds trust, enables information sharing, benefits transportation and more. Somehow, openness started to benefit supply chain management recently, through a trend called 'open innovation'. Based on gathered anecdotes and our interviews of industry professionals, we attempted to present a more complete picture of open innovation in supply chain management, including its potential benefits, major concerns, adoption hurdles, and future solutions. Our findings identified current perceptions of supply chain practitioners on open innovation and major hurdles and difficulties of implementing open innovation in supply …

Library Orientation Practices In Special Libraries, Melissa Fraser-Arnott

Faculty Publications

Purpose The library orientation session is an important marketing tool because it offers the first opportunity for library staff to connect with new clients (Craft and Ballard-Thrower, 2011; Rhoades and Hartsell, 2008). This paper aims to explore library orientation practices in special libraries and information centers with the goal of surveying current practices and identifying guidance for successful orientation program design and delivery.

Design/methodology/approach This study explored library orientation practices in special libraries and information services through an electronic survey. The survey questions were developed based on themes that emerged from case studies on library orientations from the academic …

Pursuit Of Harmony: Relational And Individual Predictors Of Sexual Passion Expression, Nathan D. Leonhardt, Dean M. Busby, Chanae Valdez

Faculty Publications

Harmonious, obsessive, and inhibited sexual passion comprise the Triadic Model of Sexual Passion. Research has shown that together they play an important role in sexual and relationship satisfaction. Little is known, however, about the factors that predict the likelihood of having these types of passion expression. Using a Mechanical Turk sample of 1414 individuals, we estimated structural equation models to evaluate how relationship factors (i.e., relationship length, sexual desire, sexual drive) and individual factors (i.e., attachment style, childhood abuse, personality) predict the three constructs from the Triadic Model of Sexual Passion. In general, those with higher sexual desire, secure attachment, …

Do You Feel In Control? Sexual Desire, Sexual Passion Expression, And Associations With Perceived Compulsivity To Pornography And Pornography Use Frequency, Nathan D. Leonhardt, Dean M. Busby, Brian J. Willoughby

Faculty Publications

Previous scholars have found that when individuals feel that pornography use is uncontrollable, it is linked to more extreme negative outcomes than frequency of use. With a Mechanical Turk sample of 1421 individuals, we used structural equation modeling to evaluate how multiple aspects of sexual desire (sexual drive and dyadic desire) and multiple aspects of sexual passion expression (harmonious, obsessive, and inhibited) were associated with both pornography use frequency and perceived compulsivity to pornography. In general, sexual desire was more connected to pornography use and sexual passion was more connected to perceived compulsivity. Specifically, sexual drive was associated with higher …

Lipocalin 2 Induces Neuroinflammation And Blood-Brain Barrier Dysfunction Through Liver-Brain Axis In Murine Model Of Nonalcoholic Steatohepatitis, Ayan Mondal, Dipro Bose, Punnag Saha, Sutapa Sarkar, Ratanesh K. Seth, Diana Kimono, Muayad Albadrani, Mitzi Nagarkatti, Prakash Nagarkatti, Saurabh Chatterjee

Faculty Publications

BACKGROUND:

Recent clinical and basic research implicated a strong correlation between NAFLD/NASH phenotypes with ectopic manifestations including neuroinflammation and neurodegeneration, but the mediators and critical pathways involved are not well understood. Lipocalin 2 (Lcn2) is one of the important mediators exclusively produced in the liver and circulation during NASH pathology.

METHODS:

Using murine model of NASH, we studied the role of Lcn2 as a potent mediator of neuroinflammation and neurodegeneration in NASH pathology via the liver-brain axis. RESULTS: Results showed that high circulatory Lcn2 activated 24p3R (Lipocalin2 receptor) in the brain and induced the release of high mobility group box …

Terrorism And Right-Wing Extremism: History And Comparative Definitions, Kwame B. Antwi-Boasiako, Caleb Grant Hill

Faculty Publications

Recent narratives on terrorism have focused on the definitions. Terrorism is not a new phenomenon, but the problem resides in its definition and who is defining it. Conceptualizing terrorism depends on which framework one utilizes. The use of different lenses to define the term has contributed to the lack of global acceptance of what constitutes terrorism, hence the difficulty of gathering data for analysis. It is also a conundrum when powerful nations legitimize their terrorist activities against weaker ones. This, unfortunately, has led to the subjectiveness of every attempt in the literature to objectively provide a globally acceptable definition. Using …

Post-Traumatic Stress And Marijuana Outcomes: The Mediating Role Of Marijuana Protective Behavioral Strategies, Hallie R. Jordan, Michael B. Madson, Adrian J. Bravo, Matthew R. Pearson

Faculty Publications

Background: The present study investigated the mediating role of protective behavioral strategies for marijuana (PBSM) on the relationship between posttraumatic stress disorder (PTSD) and marijuana outcomes (i.e. marijuana use frequency, marijuana use quantity, cannabis use disorder (CUD) symptoms, and marijuana-related problems).

Methods: Participants were 1,107 traditional age college students (M_age = 20.26, SD = 3.32; 66.5% White, non-Hispanic; 68.8% female), who reported consuming marijuana at least once in the last 30 days and completed measures of PTSD symptoms, PBSM, and marijuana-related outcomes.

Results: PBSM significantly mediated the positive relationships between PTSD symptoms and both CUD symptoms and marijuana-related …

A Discrete Hidden Markov Model For Sms Spam Detection, Tian Xia, Xuemin Chen

Faculty Publications

Many machine learning methods have been applied for short messaging service (SMS) spam detection, including traditional methods such as naive Bayes (NB), vector space model (VSM), and support vector machine (SVM), and novel methods such as long short-term memory (LSTM) and the convolutional neural network (CNN). These methods are based on the well-known bag of words (BoW) model, which assumes documents are unordered collection of words. This assumption overlooks an important piece of information, i.e., word order. Moreover, the term frequency, which counts the number of occurrences of each word in SMS, is unable to distinguish the importance of words, …

Greenwashing No More: The Case For Stronger Regulation Of Environmental Marketing, Robin M. Rotman, Chloe J. Gossett, Hope D. Goldman

Faculty Publications

Fraudulent and deceptive environmental claims in marketing (sometimes called “greenwashing”) are a persistent problem in the United States, despite nearly thirty years of efforts by the Federal Trade Commission (FTC) to prevent it. This Essay focuses on a recent trend in greenwashing - fraudulent “organic” claims for nonagricultural products, such as home goods and personal care products. We offer three recommendations. First, we suggest ways that the FTC can strengthen its oversight of “organic” claims for nonagricultural products and improve coordination with the USDA. Second, we argue for inclusion of guidelines for “organic” claims in the next revision of the …

Comparison Of Chemotherapeutic Activities Of Rhodamine-Based Gumbos And Nanogumbos, Nimisha Bhattarai, Mi Chen, Rocío L. Pérez, Sudhir Ravula, Robert M. Strongin, Karen Mcdonough, Isiah M. Warner

Faculty Publications

© 2020 by the authors. Rhodamine derivatives have been widely investigated for their mitochondrial targeting and chemotherapeutic properties that result from their lipophilic cationic structures. In previous research, we have found that conversion of Rhodamine 6G into nanoGUMBOS, i.e., nanomaterials derived from a group of uniform materials based on organic salts (GUMBOS), led to selective chemotherapeutic toxicity for cancer cells over normal cells. Herein, we investigate the chemotherapeutic activity of GUMBOS derived from four different rhodamine derivatives, two bearing an ester group, i.e., Rhodamine 123 (R123) and SNAFR-5, and two bearing a carboxylic acid group, i.e., rhodamine 110 (R110) and …

Fully Automated Pipeline For Body Composition Estimation From 3d Optical Scans Using Principal Component Analysis: A Shape Up Study, Sima Sobhiyeh, Nathan Borel, Marcelline Dechenaud, Clinten A. Graham, Michael Wong, Peter Wolenski, John Shepherd, Steven B. Heymsfield

Faculty Publications

The increasing prevalence and adaptability of 3D optical scan (3DO) technology has invoked many recent studies which use 3DO scanning as a convenient and inexpensive means for predicting body composition and health risks. The Shape Up studies seek a device-agnostic solution for body composition estimation based on principal component analysis (PCA). This paper reports a progress made on Shape Up's previous work which served as a criterion analysis for PCA-based body composition and health risk prediction. This study presents proof-of-concept for a novel automated landmark detection step that allows for a fully automated PCA-based approach to body composition estimation that …

Implications Of Four-Dimensional Weather Cubes For Improved Cloud-Free Line-Of-Sight Assessments Of Free-Space Optical Communications Link Performance, Steven T. Fiorino, Santasri Bose-Pillai, Jaclyn Schmidt, Brannon Elmore, Kevin J. Keefer

Faculty Publications

We advance the benefits of previously reported four-dimensional (4-D) weather cubes toward the creation of high-fidelity cloud-free line-of-sight (CFLOS) beam propagation for realistic assessment of autotracked/dynamically routed free-space optical (FSO) communication datalink concepts. The weather cubes accrue parameterization of optical effects and custom atmospheric resolution through implementation of numerical weather prediction data in the Laser Environmental Effects Definition and Reference atmospheric characterization and radiative transfer code. 4-D weather cube analyses have recently been expanded to accurately assess system performance (probabilistic climatologies and performance forecasts) at any wavelength/frequency or spectral band in the absence of field tests and employment data. The …

Wave-Optics Investigation Of Turbulence Thermal Blooming Interaction: I. Using Steady-State Simulations, Mark F. Spencer

Faculty Publications

Part I of this two-part paper uses wave-optics simulations to look at the Monte Carlo averages associated with turbulence and steady-state thermal blooming (SSTB). The goal is to investigate turbulence thermal blooming interaction (TTBI). At wavelengths near 1 μm, TTBI increases the amount of constructive and destructive interference (i.e., scintillation) that results from high-power laser beam propagation through distributed-volume atmospheric aberrations. As a result, we use the spherical-wave Rytov number and the distortion number to gauge the strength of the simulated turbulence and SSTB. These parameters simplify greatly given propagation paths with constant atmospheric conditions. In addition, we use the …

Wave-Optics Investigation Of Turbulence Thermal Blooming Interaction: Ii. Using Time-Dependent Simulations, Mark F. Spencer

Faculty Publications

Part II of this two-part paper uses wave-optics simulations to look at the Monte Carlo averages associated with turbulence and time-dependent thermal blooming (TDTB). The goal is to investigate turbulence thermal blooming interaction (TTBI). At wavelengths near 1 μm, TTBI increases the amount of constructive and destructive interference (i.e., scintillation) that results from high-power laser beam propagation through distributed-volume atmospheric aberrations. As a result, we use the spherical-wave Rytov number, the number of wind-clearing periods, and the distortion number to gauge the strength of the simulated turbulence and TDTB. These parameters simply greatly given propagation paths with constant atmospheric conditions. …

Turbulence Profiling Using Pupil Plane Wavefront Data Derived Fried Parameter Values For A Dynamically Ranged Rayleigh Beacon, Steven M. Zuraski, Elizabeth Beecher, Jack E. Mccrae, Steven T. Fiorino

Faculty Publications

Long-range optical imaging applications are typically hindered by atmospheric turbulence. The effect of turbulence on an imaging system can manifest itself as an image blur effect usually quantified by the phase distortions present in the system. The blurring effect can be understood on the basis of the measured strength of atmospheric optical turbulence along the propagation path and its impacts on phase perturbation statistics within the imaging system. One method for obtaining these measurements is by the use of a dynamically ranged Rayleigh beacon system that exploits strategically varied beacon ranges along the propagation path, effectively obtaining estimates of the …

Recommendations For Online Teaching, St. John's University School Of Law Online & Hybrid Teaching Task Force, Renee Nicole Allen, Jennifer Baum, Catherine Baylin Duryea, Robert Ruescher, Courtney Selby, Eric Shannon, Rachel Smith, Jeff Sovern

Faculty Publications

This is a collection of recommendations drawn from a variety of sources, including our colleagues, students, webinars, books, articles, podcasts, and our own experimentation. It is not our expectation that any individual professor would adopt all of these suggestions and indeed no one of us intends to. Instead, we hope that some of these are helpful to you. Some suggestions deal with the nuts and bolts of teaching online while others with how to accomplish broader goals.

The general recommendations are broadly applicable to all courses taught online, while the individual class-type recommendations are intended to complement and augment the …

Relationships And Retaliation In The #Metoo Era, Nicole Buonocore Porter

Faculty Publications

In this #MeToo era, so much important work is being done (and so many stories are being told and listened to), but very little of the work focuses on retaliation. And none of the work focuses on situations where the fear of retaliation is not necessarily job loss (although that certainly happens) but rather, it is the fear of harming workplace relationships. This Article will use a real-life story of harassment to demonstrate how much workplace relationships matter-especially to women-and how the fear of harming those relationships often affects an employee's willingness to report harassment. Thus, this Article argues for …

Family Behaviors As Unchanging Obstacles In End-Of-Life Care: 16-Year Comparative Data, Renea L. Beckstrand, Jasmine B. Jenkins, Karlen E. Luthy, Janelle L. B. Macintosh

Faculty Publications

Background Critical care nurses routinely care for dying patients. Research on obstacles in providing end-of-life care has been conducted for more than 20 years, but change in such obstacles over time has not been examined.

Objective To determine whether the magnitude scores of obstacles and helpful behaviors regarding end-of-life care have changed over time.

Methods In this cross-sectional survey study, questionnaires were sent to 2000 randomly selected members of the American Association of Critical-Care Nurses. Obstacle and helpful behavior items were analyzed using mean magnitude scores. Current data were compared with data gathered in 1999.

Results Of the 2000 questionnaires …