Digital Commons Network^™

Can Whistleblowing Improve Organizational Effectiveness? Evidence From Financial Reporting Misconduct, Hong Kim Duong, Sadok El Ghoul, Omrane Guedhami, Emmanuel Sequeira, Zuobao Wei

Faculty Research, Scholarly, and Creative Activity

Background: While whistleblowing (WB) has attracted growing research interest in recent years, several critical WB-related issues remain underexplored. Purpose: This study examines the impact of external WB allegations on a firm’s organizational capital (OC). Such allegations often indicate management’s failure to address employee concerns internally, spotlighting potential deficiencies in internal reporting systems, employee communication, training, and trust in organizational fairness. To mitigate reputational damage, restore employee trust, and prevent future incidents, we posit that WB firms respond by increasing OC investment. Research Design: We employ a difference-in-differences approach, comparing OC changes in WB-targeted firms with those in a propensity score-matched …

From Disciplinary Enthusiasm To Soulless Tasks: Norms Behind Computing Educators' Emotion Display, Virginia Grande, Päivi Kinnunen, Matthew Barr, Anne Kathrin Peters, Mihaela Sabin, Matilde Sánchez-Peña, Ethel Tshukudu

Faculty Research, Scholarly, and Creative Activity

Computing educators' emotion display is regulated by various norms and conventions. These (unwritten) rules affect which emotions educators feel comfortable expressing to different extents when students can perceive such displays. We draw on emotions and norms literature to investigate higher education computing educators' perceptions of what kinds of norms they have as criteria when considering which emotions they are (not) comfortable showing when teaching. Based on the qualitative content analysis of 22 interviews with computing educators from seven countries, we present various–sometimes connected or conflicting–norms that influence emotion display. These norms comprise moral, national, societal, professional, and affiliation norms that …

Facility-Based Uptake Of Colorectal Cancer Screening In 45-49-Year-Olds After U.S. Guideline Changes, Alyssa H. Harris, Hannah Murphy, Madeleine Mcdowell, Margaret E. Wright, M. Courtney Hughes

Faculty Articles, Papers, and Other Scholarship

No abstract provided.

Examining The Professional Noticing Skills, Attitudes Toward Mathematics, And Elementary Math Content Knowledge Of Preservice Elementary School Teachers Through The Noticing Numeracy Now Intervention, Johnathan T. Rogers

Theses and Dissertations--Science, Technology, Engineering, and Mathematics (STEM) Education

Abstract: This quasi-experimental study examined the impact of the Noticing Numeracy Now intervention, an intervention focused on professional noticing of children’s conceptual development in whole number and arithmetic reasoning, on preservice elementary teachers’ professional noticing skills, attitudes toward mathematics, and elementary math content knowledge. This study was based off of a previous study and intervention created by Molly Fisher, Jonathan Thomas, Edna Schack, Cindy Jong and Janet Tassell. This study used a video-based professional noticing module, consisting of four lessons, situated in the pedagogies of practice framework. Within this study, 10 students (all preservice elementary teachers) at Kentucky State University …

Investigation Of Subsurface Thermal Radiation Phenomena In Fibrous Thermal Protection Systems, Colby L. Gore

Theses and Dissertations--Science, Technology, Engineering, and Mathematics (STEM) Education

Atmospheric re-entry induces intense thermal stress upon vehicles through a high-enthalpy boundary layer that encompasses the craft. To protect these vehicles, numerous insulative methods, known as thermal protection systems (TPS), are deployed to protect the craft during re-entry. The TPS materials insulate the craft from intense thermal transmission that would terminate a mission. In hypersonic environments, vast temperature gradients exist, enforcing the exponential effect of thermal radiation. However, TPS materials are commonly low-density fibrous materials that allow for the potential to be penetrated by thermal radiation. A series of arc-jet tests was completed to replicate enhanced radiative conditions in a …

A Close Look At Dissolved Silica Dynamics In Disko Bay, West Greenland, Mark J. Hopwood, Dustin Carroll, Yuanyuan Gu, Xin Huang, Jana Krause, Stefano Cozzi, Carolina Cantoni, María Fernanda Gastelu Barcena, Shandy Carroll, Arne Körtzinger

Faculty Research, Scholarly, and Creative Activity

Discharge of calved ice, runoff and mixing driven by subglacial discharge plumes likely have consequences for marine biogeochemistry in Disko Bay, which hosts the largest glacier in the northern hemisphere, Sermeq Kujalleq. Glacier retreat and increasing runoff may impact the marine silica cycle because glaciers deliver elevated concentrations of dissolved silica (dSi) compared to other macronutrients. However, the annual flux of dSi delivered to the ocean from the Greenland Ice Sheet is poorly constrained because of difficulties distinguishing the overlapping influence of different dSi sources. Here we constrain silica dynamics around Disko Bay, including the Ilulissat Icefjord and four other …

Autoregressive Neural Quantum States Of Fermi Hubbard Models, Eduardo Ibarra-García-Padilla, Hannah Lange, Roger G. Melko, Richard T. Scalettar, Juan Carrasquilla, Annabelle Bohrdt, Ehsan Khatami

Faculty Research, Scholarly, and Creative Activity

Neural quantum states (NQSs) have emerged as a powerful ansatz for variational quantum Monte Carlo studies of strongly correlated systems. Here, we apply recurrent neural networks (RNNs) and autoregressive transformer neural networks to the Fermi-Hubbard and the (non-Hermitian) Hatano-Nelson-Hubbard models in one and two dimensions. In both cases, we observe that the convergence of the RNN ansatz is challenged when increasing the interaction strength. We present a physically motivated and easy-to-implement strategy for improving the optimization, namely, by ramping of the model parameters. Furthermore, we investigate the advantages and disadvantages of the autoregressive sampling property of both network architectures. For …

Gray Matter Volumetric Changes In Tinnitus: The Impact Of Hearing Loss And Severity, Gibbeum Kim, Rafay A. Khan, Yihsin Tai, Somayeh Shahsavarani, Fatima T. Husain

Faculty Research, Scholarly, and Creative Activity

Tinnitus is a phantom auditory sensation that commonly co-occurs with hearing loss. Both tinnitus and hearing loss can impact the quality of life, emotional well-being, and cognitive functioning of the affected individuals. While previous studies have highlighted structural alterations in hearing loss and/or tinnitus, the fundamental neural mechanisms underpinning tinnitus severity remain poorly understood. In this study, we conducted a voxel-based morphometry to investigate gray matter (GM) volume differences among groups of participants with varying tinnitus severity and hearing status, and controls within a large sample. We observed reduced GM volume in the left anterior insula and right planum polare …

Modeling Of Precipitation Over Africa: Progress, Challenges, And Prospects, A. A. Akinsanola, C. N. Wenhaji, R. Barimalala, P. A. Monerie, R. D. Dixon, A. T. Tamoffo, M. O. Adeniyi, V. Ongoma, I. Diallo, M. Gudoshava, C. M. Wainwright, R. James, K. C. Silverio, A. Faye, S. S. Nangombe, M. W. Pokam, D. A. Vondou, N. C.G. Hart, For Full Author List, See Comments Below

Faculty Research, Scholarly, and Creative Activity

In recent years, there has been an increasing need for climate information across diverse sectors of society. This demand has arisen from the necessity to adapt to and mitigate the impacts of climate variability and change. Likewise, this period has seen a significant increase in our understanding of the physical processes and mechanisms that drive precipitation and its variability across different regions of Africa. By leveraging a large volume of climate model outputs, numerous studies have investigated the model representation of African precipitation as well as underlying physical processes. These studies have assessed whether the physical processes are well depicted …

Towards Secure Runtime Auditing Of Remote Embedded System Software, Adam Ilyas Caulfield

Theses

Modern embedded systems are increasingly deployed in various settings to execute critical sensing/actuation tasks. At the lower end of the scale, they are designed with low-cost and energy-efficient microcontroller units (MCUs) that lack the common security features of general-purpose processors. To assess their state in a cost-effective manner, Control Flow Attestation (CFA) methods provide means for a trusted device operator (i.e., the Verifier -- Vrf) to detect attacks that compromise the integrity or runtime behavior of a remotely-deployed MCU (i.e., the Prover -- Prv). This is achieved by a root-of-trust (RoT) in Prv recording an authenticated trace (CFLog) of the …

Study Of An Evolutionary Sequence Of Nearby, High-Excitation Bipolar Planetary Nebulae With Alma And Hst, Paula M. Moraga Baez

Theses

Planetary nebulae (PNe) reveal the near-final stages of the evolution of intermediate-mass (1-8 solar mass) stars, immediately after such stars shed their envelopes through copious asymptotic giant branch (AGB) mass loss. PNe reveal products of intermediate-mass stellar nucleosynthesis just before they enrich the interstellar medium, and their central stars provide subjects for studying the origins of white dwarfs and interacting binary systems involving compact objects. The processes that shape planetary nebulae and determine their chemistries can be unveiled through multiwavelength observational studies of molecule-rich PNe ranging from young and rapidly evolving nebulae, such as NGC 7027, NGC 6302, and NGC …

Neuro-Evolution For Multivariate Time Series Anomaly Detection, Aryan Jha

Theses

Given the exponential growth of data in various sectors, the timely identification of anomalies has become crucial in mitigating risks such as financial losses and data breaches. This research focuses on advancing multivariate time series anomaly detection through the innovative application of neuro-evolutionary methods. Utilizing the Evolutionary eXploration of Augmenting Memory Models (EXAMM) algorithm, the study automates the design and optimization of Long Short-Term Memory (LSTM) autoencoder networks, enabling enhanced forecasting capabilities in recurrent neural network architectures. Leveraging these networks along with a One-Class Support Vector Machine (OCSVM) to generate boundary thresholds, this project delivers a robust and scalable procedure …

Predicting Airbnb Prices In Dubai Using Machine Learning, Hamad Younus Altamimi

Theses

The Airbnb rental market in Dubai is dynamic and full of varying factors like location, equipment, and demand time shortages, which makes it challenging to have fair pricing for the different levels of Airbnb properties in Dubai. The goal of the project was to construct a powerful machine-learning model for the forecast of the Airbnb rental price in Dubai The method used by the project was systematic from the beginning to the end stages, which included the data collection from Kaggle, the data preprocessing which involved the handling of missing values, outlier elimination, data type conversion, and exploratory data analysis …

Resilient Power System Load Frequency Control, Ghadeer Ahmed Almahri

Theses

Standard frequency and voltage levels need to be maintained when the electric power system is running in order to keep it in a satisfactory state of operation. Between AC power generation and use, there should be a balance between active and reactive power. However, due to variations in active and reactive power requirements, the frequency and voltage provided may fluctuate from their rated values. Any unwelcome change in frequency or voltage can have an immediate effect on how the power system operates and may even cause harm to linked devices. These parts are intended to operate at certain rated frequencies …

Drip Hoses And Discipleship: Rethinking The Future Of Theological Education With Justo González, Benjamin D. Wayman Ph.D.

Apuntes: Reflexiones teológicas desde el margen hispano

In early February 2020 I spent a day with Justo González at his home in Decatur, Georgia, to discuss the future of theological education. The following piece showcases the disciplined imagination of one of the greatest church historians of our generation as he explains how drip hoses, worship, baptism, online learning, and more could guide the next generation of theological educators. In what follows, the reader will get a sense for why González thinks theological education is in a place of promise rather than peril.

A principios de febrero de 2020, pasé un día con Justo González en su casa …

Domain-Specific Customization For Improving Speech To Text, Zubin Mario Tobias

Theses

The advent of transformer-based models has revolutionized natural language processing, bringing remarkable improvements in tasks like automatic speech recognition (ASR). Inspired by these advancements, this thesis explores the optimization of a transformer-based ASR model to improve transcription accuracy in educational settings, particularly for lecture content. The goal of this research is to provide real-time, high-accuracy captions that enhance accessibility for all students, while offering a cost-effective solution for educators. To assess the potential of domain-specific fine-tuning, Whisper-small underwent two phases of fine-tuning. In the first phase, it was finetuned on care- fully selected, publicly available datasets: SpeechColab’s Gigaspeech-XS [39], AMI …

Predictive Policing - Leveraging Cctv Data And Ai For Crime Hotspots, Maitha Ahmad

Theses

This thesis explores fine-grained sentiment analysis in the context of police social media posts, leveraging hybrid approaches to manage the rapid flow of big data and mitigate its negative impact on youth. As social media becomes a primary medium for public interaction, understanding sentiment within police-related posts is crucial for law enforcement agencies to gauge public opinion and address community concerns effectively. The rapid dissemination of information and the potential for negative sentiments to spread swiftly pose significant challenges, particularly for young audiences. The research begins with a comprehensive review of existing sentiment analysis techniques and their applicability to large-scale …

Determinants Of Profitability In Uae Banks (2019-2023): An Analysis And Forecast For The Next Five Years, Rashed Aljanahi

Theses

This study aims to analyze the factors that led to the banks' profitability in UAE from 2019 to 2023 based on factors such as capital adequacy, asset quality, and liquidity. With these factors and Return on Assets, the study seeks to determine the link between the variables affecting financial performance in the banking sector. The study relies on quantitative data from UAE banks to include statistical analysis and construct predictive models. The relationships between the variables are established using Multiple Linear Regression. At the same time, Random Forest Algorithms explore Non-Linear Interactions and Time Series Analysis using ARIMA models to …

Accuracy And Reliability Of Video-Based Range-Of-Motion Assessments In Postreconstruction Brachial Plexus Patients, Christopher J. Dy, Stephen J. Demartini, Eshan Sane, David M. Brogan, Planet Study Group

2020-Current year OA Pubs

PURPOSE: Following surgical reconstructions considered successful, many patients with brachial plexus injuries (BPI) have limited limb motion. In addition to manual muscle testing, clinicians typically measure active range of motion (AROM). AROM measurement relies on in-person examination and manual goniometers or visual estimation, both of which are subject to interobserver variability. The purpose of this proof-of-concept study was to evaluate reliability of video-based AROM assessments. We hypothesized that video-based assessment of AROM would have high inter-rater reliability (IRR) among surgeons who perform BPI reconstruction.

METHODS: We video recorded a standardized examination in a convenience sample of 8 postreconstruction BPI patients …

Preliminary Investigation Of Obstructive Sleep Apnea And Alzheimer's Disease In Down Syndrome, Dasoo M Yoon, David T Plante, Victoria Fleming, Benjamin Handen, Patrick Lao, Jamie Peven, Bradley Christian, Ozioma Okonkwo, Charles Laymon, Beau Ances, Christy Hom, Brian Helsel, Sigan L Hartley

2020-Current year OA Pubs

This study provided a preliminary examination of indices of obstructive sleep apsnea (OSA) and sleep disruptions in adults with Down syndrome (DS), and their associations with Alzheimer's disease (AD) pathology and symptomatology. A total of 93 adults with DS (aged 25-61 years) from the Alzheimer Biomarker Consortium-DS completed cognitive assessments, MRI and positron emission tomography (PET) scans (assessing amyloid-beta [Aβ] and tau), and a one-night home sleep study using the WatchPAT-300 device. Study partners also reported on depressive symptoms and diagnoses. Correlational analyses examined relationships between sleep variables, PET biomarkers, and AD symptomatology (cognitive functioning and depressive mood), controlling for …

The Multiple Classes Of Ultra-Diffuse Galaxies: Can We Tell Them Apart?, Maria Luisa Buzzo, Duncan A. Forbes, Thomas H. Jarrett, Francine R. Marleau, Pierre Alain Duc, Jean P. Brodie, Aaron J. Romanowsky, Anna Ferré-Mateu, Michael Hilker, Jonah S. Gannon, Joel Pfeffer, Lydia Haacke

Faculty Research, Scholarly, and Creative Activity

This study compiles stellar populations and internal properties of ultra-diffuse galaxies (UDGs) to highlight correlations with their local environment, globular cluster (GC) richness, and star formation histories. Complementing our sample of 88 UDGs, we include 36 low surface brightness dwarf galaxies with UDG-like properties, referred to as NUDGes (nearly UDGs). All galaxies were studied using the same spectral energy distribution fitting methodology to explore what sets UDGs apart from other galaxies. We show that NUDGes are similar to UDGs in all properties except for being, by definition, smaller and having higher surface brightness. We find that UDGs and NUDGes show …

Working With Similarities And Differences: Relational Processes In Transdisciplinary Qualitative Research With Diverse Teams, Michael S. Dao, Soma De Bourbon, Melissa Mcclure Fuller, Miranda Worthen

Faculty Research, Scholarly, and Creative Activity

Transdisciplinary research and research teams are becoming increasingly valued in academic spaces. The potential of transdisciplinary research is that the diversity of thought and experience can create robust research processes from project inception, methodological protocol, data collection, data analysis and reporting output. Yet, transdisciplinary research teams can also bring about complications pertaining to conflicting epistemological perspectives, areas of expertise, and objectives for applied impact. In noting the benefits and downsides of transdisciplinary research, this article aims to detail how a transdisciplinary research team navigated a qualitative and participatory longitudinal research project. Drawing from a larger community-based participatory research project, the …

“I Bet Being Trans In The Netherlands Is Like Living In The Future”: Could The Netherlands Serve As An Imperfect “Gold Standard” Comparator For Transgender Youth Research In The United States?, Anna I.R. Van Der Miesen, Sharanya Rao, Abigail L. Fischbach, Alex C. Bakker, Marjolein Van Den Brink, Renata A. Sanders, Caitlin Ryan, Stephen M. Rosenthal, Joep Roeffen, Asaf Orr Esq, Heather Newby, Kathie Moehlig, Richard Mocarski, Kim Horsnell, Thijs De Greeff, Annelou L.C. De Vries, Aisa Burgwal, Owen Wilson, Annika Kooke

Faculty Research, Scholarly, and Creative Activity

Background: In available comparative studies, Dutch transgender youth have consistently shown better psychosocial well-being compared to those in other countries. Therefore, the Netherlands (N.L.) could be considered a gold-standard—though imperfect—comparator for transgender youth research. The United States (U.S.) is heterogeneous in its policies and practices impacting transgender youth, and policies are in flux. This study examines similarities and differences between U.S. and Dutch policies, practices, and contexts relevant to the well-being of transgender adolescents. Methods: A three-stage Delphi procedure was conducted with expert panels in the N.L. and U.S. Results: This process identified candidate mechanisms driving differences in outcomes for …

Empowering Customer Service With Generative Ai: Enhancing Agent Performance While Navigating Challenges, Charles Costa, Souvick Ghosh

Faculty Research, Scholarly, and Creative Activity

Introduction. As large language models (LLMs), such as GPTs, become more intelligent, a key area of exploration is how these technologies can improve the customer experience. Contrary to common belief, many consumers, including Gen Z, prefer human-provided customer service, illustrating the importance of human-AI collaboration in the space. Method. By leveraging the author’s real-world knowledge of enterprise knowledge management and customer service delivery, we reviewed numerous literature about AI, knowledge management, and service design and synthesised practical insights for industry professionals to build a successful AI strategy. Analysis. We examined the gap between academic research on generative AI and how …

Label-Free Visualization And Segmentation Of Endothelial Cell Mitochondria Using Holotomographic Microscopy And U-Net, Raul Michael, Tallah Modirzadeh, Tahir Bachar Issa, Patrick Jurney

Faculty Research, Scholarly, and Creative Activity

Understanding the physiological processes underlying cardiovascular disease (CVD) requires examination of endothelial cell (EC) mitochondrial networks, because mitochondrial function and adenosine triphosphate production are crucial in EC metabolism, and consequently influence CVD progression. Although current biochemical assays and immunofluorescence microscopy can reveal how mitochondrial function influences cellular metabolism, they cannot achieve live observation and tracking changes in mitochondrial networks through fusion and fission events. Holotomographic microscopy (HTM) has emerged as a promising technique for real-time, label-free visualization of ECs and their organelles, such as mitochondria. This nondestructive, noninterfering live cell imaging method offers unprecedented opportunities to observe mitochondrial network dynamics. …

Layover Start Timing Predicts Layover Sleep Quantity And Timing On Long-Range And Ultra-Long-Range Trips, Michael J. Rempe, Ian Rasmussen, Kevin Gregory, Cheyenne Johnson, Matthew Hsin, Erin Flynn-Evans, Amanda Lamp, Cassie J. Hilditch

Faculty Research, Scholarly, and Creative Activity

Study Objectives: Airline transport pilot sleep during layover is an important factor for alertness on subsequent flights. Assessing pilots' sleep on layover is an important first step in helping them obtain the most recuperative sleep possible on layover. Here, we investigate the quantity and timing of sleep during layovers and determine predictors for layover sleep. Methods: Sleep was assessed in 256 pilots flying a total of 473 long-range (LR; flight time 12-16 hours) or ultra-long-range (ULR; flight time > 16 hours) trips. Sleep was assessed using actigraphy. We employed linear mixed-effects models with layover sleep characteristics as the outcomes. The predictor …

Measurement Resolution Enhanced Coherence For Lattice Fermions, Hilary M. Hurst, Yik Haw Teoh, I. B. Spielman

Faculty Research, Scholarly, and Creative Activity

Weak measurement enables the extraction of targeted information from a quantum system while minimizing decoherence due to measurement backaction. However, in many-body quantum systems, backaction can have unexpected effects on wave-function collapse. We theoretically study a minimal many-particle model consisting of weakly measured noninteracting fermions in a one-dimensional lattice. Repeated measurement of the on-site occupation number with single-site resolution stochastically drives the system toward a Fock state, regardless of the initial state. This need not be the case for measurements that do not, even in principle, have single-site spatial resolution. We numerically show for systems with up to 16 sites …

The Chatgpt Fact-Check: Exploiting The Limitations Of Generative Ai To Develop Evidence-Based Reasoning Skills In College Science Courses, Ursula Holzmann, Sulekha Anand, Alexander Y. Payumo

Faculty Research, Scholarly, and Creative Activity

Generative large language models (LLMs) like ChatGPT can quickly produce informative essays on various topics. However, the information generated cannot be fully trusted, as artificial intelligence (AI) can make factual mistakes. This poses challenges for using such tools in college classrooms. To address this, an adaptable assignment called the ChatGPT Fact-Check was developed to teach students in college science courses the benefits of using LLMs for topic exploration while emphasizing the importance of validating their claims based on evidence. The assignment requires students to use ChatGPT to generate essays, evaluate AI-generated sources, and assess the validity of AI-generated scientific claims …

Using A Sober Curious Framework To Explore Barriers And Facilitators To Helping Sexual Minority Women Reduce Alcohol-Related Harms: Protocol For A Descriptive Study, Tonda L. Hughes, Lauren Bochicchio, Laurie A. Drabble, Belinda Lunnay, David Whiteley, Jillian R. Scheer, Beth Meadows, Paul Ward, Carol Emslie

Faculty Research, Scholarly, and Creative Activity

Background: Globally, women consume less alcohol than men, but alcohol consumption among women has declined less in recent years than among men. Drinking rates and alcohol-related harms vary substantially across population groups of women, and sexual minority women (eg, lesbian, bisexual, and queer) are at notably high risk. An emerging body of literature suggests that in addition to minority stress (eg, stigma, discrimination), drinking norms and drinking cultures likely influence sexual minority women’s drinking. Almost no research has explored these factors as possible targets of interventions. Sober curiosity is a rapidly growing wellness movement that may be particularly salient for …

On Entityness And Takeovers: Acquisition Valuation, Theory Of The Firm, And Coase’S Error, Robert J. Rhee

Vanderbilt Law Review

This Article advances a theory of entityness that theorizes the firm and its relationship to the acquisition premium. This theory is the first scholarly analysis to construct a general model of takeover valuation by integrating the modern finance theory of asset value and a corrected Coasean theory of the firm. The acquisition premium is an enigma. Acquirers must pay it. But why? Isn’t the market price tethered to fundamental value through an efficient market? This enigma reveals a key insight about firms. The theory of entityness postulates that the acquisition premium is compensation for a capitalized asset intrinsic in the …