Digital Commons Network^™

Log Off To Level Up: The Effect Of Social Media Hiatus On Goal Pursuit, Nekysha L. Y. Jalil, Yong Han Tan, Andree Hartanto, Eddie M. W. Tong

Research Collection School of Social Sciences

Concerns are growing that social media, with its constant notifications and attention-grabbing content, may distract individuals and hinder progress toward important goals. Despite its pervasive presence in our lives, the impact of social media on goal achievement has not been thoroughly studied. This within-subject experimental study aims to investigate the effects of social media hiatus (SMH), a short abstinence from social media usage, on goal pursuit processes. Participants (N= 107) completed daily diaries over three consecutive days of SMH and three days of regular social media use. SMH was manipulated by blocking participants’ access to multiple social media platforms. The …

The Effect Of A 14-Day Digital Nudge-Based Sleep Hygiene Intervention On Behavioural, Cognitive, And Emotional Well-Being In College Students: An Experimental Approach, Tracy X. Chen, Chi-Ying Cheng, Michelle Koay, Chin Boon Soh, Andree Hartanto

Research Collection School of Social Sciences

Sleep is essential for one's cognitive, psychological, and physical health. Yet, college students often face sleep deprivation due to academic demands, social obligations, and extracurricular commitments. This study implemented a 14-day Digital Nudge-Based Sleep Hygiene Intervention, delivered via a digital platform, to encourage healthier sleep practices among college students. Grounded in nudge theory, the digital intervention used subtle behavioural prompts to improve participants' sleep hygiene without imposing restrictions, demonstrating high adherence and scalability. Participants were guided through daily tasks to enhance autonomy and motivation, such as creating calming bedtime routines. The digital intervention led to positive outcomes across four domains: …

Brief Virtual Reality And Mixed Reality Mindfulness Breathing Exercise For Emotional Well-Being And Cognitive Functions In University Students: Within-Subjects Experimental Design Study, Zoey Khai Yee Eun, Charmaine Jiali Koh, Hwajin Yang, Adalia Yin Hui Goh, Meilan Hu, K Tennakoon Appuhamillage Sandeeshwara Kasturiratna, Andree Hartanto

Research Collection School of Social Sciences

Background: Mindfulness has been shown to enhance emotional well-being and cognitive performance, yet much of this evidence stems from interventions requiring prolonged practice, making them time-consuming and less accessible. Recent studies suggest that brief mindfulness sessions may also yield positive outcomes, but the effectiveness of such interventions in virtual reality (VR) and mixed reality (MR) remains underexplored. Objective: This study investigates the effects of brief mindfulness breathing exercises delivered through VR and MR on attentional and emotional restoration and self-control capacity. Methods: Using a within-subjects experimental design, 102 undergraduate participants (n=83, 81.4% female; mean age 20.87, SD 1.89) completed a …

Digital Grief Technology To Support Bereavement: A Systematic Review Of Potential Benefits And Risks, Xun Ci Soh, Adalia Yin Hui Goh, Paye Shin Koh, Andree Hartanto

Research Collection School of Social Sciences

Grief is a universal and inevitable experience. However, the way we support the bereaved is changing, especially in the digital era. This systematic review examines the potential benefits and risks associated with various digital grief technologies, including online grief support groups, generative AI chatbots, online memorials, online therapy interventions, virtual reality, and digitally reproduced visuals or audio of the deceased. A systematic search was conducted in seven databases, and 30 articles were included in the final review. Findings indicate that digital grief technologies offer several benefits, such as reductions in grief and depressive symptoms, enhanced social support, greater accessibility, and …

Understanding Critical Thinking In Generative Artificial Intelligence Use: Development, Validation, And Correlates Of The Critical Thinking In Ai Use Scale, Gabriel R. Lau, Wei Yan Low, Louis Tay, Ysabel Thereze Ang Guevarra, Dragon Gašević, Andree Hartanto

Research Collection School of Social Sciences

Generative AI tools are increasingly embedded in everyday work and learning, yet their fluency, opacity, and propensity to hallucinate mean that users must critically evaluate AI outputs rather than accept them at face value. The present research conceptualises critical thinking in AI use as a dispositional tendency to verify the source and content of AI-generated information, to understand how models work and where they fail, and to reflect on the broader implications of relying on AI. Across six studies ( N = 1341), we developed and validated the 13-item critical thinking in AI use scale and mapped its nomological network. …

Vehicle-Ramming Incidents At U.S. Event Venues: Rapid Review Of Cases From 1970-2026, Tin L. Nguyen, Erin M. Kearns

Reports, Projects, and Research

This research brief reviews 17 high-profile vehicle-ramming incidents targeting event venues, festivals, and public gatherings in the United States over the last 56 years. The data reveals an increase in frequency of vehicle-ramming incidents over time (with 41% of documented incidents occurring in the last decade), along with a shift from unintentional or spontaneous acts to deliberate, pre-planned attacks targeting "soft targets" during periods of peak pedestrian density.

Next-Generation Terrorism: Understanding Agentic Ai Systems And Potential For Malign Use, Alexis D'Amato, Ares Boira-Lopez, Emma Theobald, Meg Shercliffe, Jack Rygg, Samuel Hunter, Joel Elson

Reports, Projects, and Research

The call for an increased understanding of artificial intelligence in the U.S. AI Action Plan (The White House, 2025), in tandem with the growing use of AI by terrorist organizations (see Theobald et al., 2025), motivates our effort to provide clarity around the emerging technologies. In doing so, we define and distinguish the different types of agentic AI (e.g., reflex, goal-based, learning) and provide several case studies to illustrate the nefarious use of these tools. We use the malevolent innovation process as a framework to understand whether these tools are used for generating ideas, planning attacks, or executing them. Although …

A New Approach To Generate Combinatorial Patterns In Logical Analysis Of Data And Its Application To Predict College Retention, Salihah Ahmed E. Jaafari

Theses and Dissertations

Student retention and degree completion remain central challenges for higher-education institutions, with significant implications for student success, institutional effectiveness, and public accountability. While advances in predictive analytics have enabled earlier identification of students at risk of withdrawal, many commonly used machine learning approaches suffer from limited interpretability, constraining their practical usefulness for advising, intervention, and policy decision making. This dissertation addresses the problem of predicting student persistence by developing and evaluating optimization based, interpretable classification models within the Logical Analysis of Data (LAD) framework. Building on existing LAD formulations, this research introduces two novel pattern generation models, the Best Term …

How Ai Destroys Institutions, Woodrow Hartzog, Jessica Silbey

Faculty Scholarship

Civic institutions—the rule of law, universities, and a free press—are the backbone of democratic life. They are the mechanisms through which complex societies encourage cooperation and stability, while also adapting to changing circumstances. The real superpower of institutions is their ability to evolve and adapt within a hierarchy of authority and a framework for roles and rules, while maintaining legitimacy for the knowledge produced and the actions taken. Purpose-driven institutions built around transparency, cooperation, and accountability empower individuals to take intellectual risks and challenge the status quo. This happens through the machinations of interpersonal relationships within those institutions, which broaden …

Antidiscrimination, Not Anti-Dei: The Real Story Of The Supreme Court's Recent Title Vii Precedent, Madeline H. Meth

Faculty Scholarship

For several years, my colleague and I had been litigating employment discrimination cases with facts that shocked our friends and family. For example, we fought Dallas County over a women-work-the-weekend policy that required women detention officers to work weekends while male colleagues took the weekends off. Likewise, we challenged the City of Cleveland when it moved our client, an emergency medical services supervisor, from the day shift to the night shift explicitly because he is Black. Then, in April 2024, in one of our client’s cases, Muldrow v. City of St. Louis, the U.S. Supreme Court unanimously overruled the …

Latinos In Rural Areas Of Massachusetts, Phillip Granberry, Rodolfo R. Vega, Florita Coto Tristán, Rafael M. Pérez Medina

Gastón Institute Publications

In previous reports, the Gastón Institute has noted that the Latino population is dispersed across the state, but mainly to urban areas. In 2024, Latinos living in Massachusetts rural areas1 numbered 38,500, or 3.6% of the state's overall Latino population. Although Massachusetts is the third most densely populated among the fifty U.S. states, 52% of its land is classified as rural. These rural areas hold over 45% of the state's cities and towns and about 700,000 residents (9.9% of the total population). This report underscores the limited Latino presence in rural areas compared to urban areas and analyzes differences in …

Mechanism Of Formation Of Guanine-Guanine Crosslinks As Products Of One-Electron Oxidation Of 1-Methylguanosine In Acidic Medium, Ibrahim Braimah Mr

Electronic Theses and Dissertations

Reactive oxygen species (ROS) from normal metabolism and environmental exposure may cause oxidative DNA damage. Guanine (G) is the most oxidizable nucleobase. One-electron oxidation (OEO) of G in produces guanine radical cation (G•⁺), which deprotonates to form guanyl radical G(-H)•.This radical exists in two tautomeric forms: G(N1-H)• and G(N2-H)•. Dimerization of guanyl radical yields G-G cross-links (D1/D2); a tautomeric form for dimer formation remains elusive. This study presents the first characterization of G• dimerization products from the OEO of 1-MeGuo in acidic medium. Photolysis at 470 nm in the presence of S₂O₈²⁻ and Ru(II)(bpy)₃²⁺ generates two major stereoisomers (D1AW* and …

Decomposition And Spectral Characterization Of Unsteady Loads In Pulse-Jet Propulsion Testing, Cesar Benitez

Theses and Dissertations

Pulsed jet propulsion systems produce inherently unsteady forces whose time-resolved characterization is essential for performance assessment, yet the measured load signal conflates aerodynamic forcing with the dynamic response of the measurement balance itself. This thesis develops a load centered framework for the dynamic characterization of a pulsed jet system, treating the measured load fluctuation as the primary physical observable rather than attempting full true-thrust reconstruction. A single-degree-of-freedom balance model identified through ringdown testing provides the structural reference scale, yielding a natural frequency of 8.5 Hz and damping ratio of 18%. Power spectral density, phase-averaging, and synchronous–residual decomposition is applied uniformly …

Exploration Of Extended Chemical Reaction Networks, Ramiro Santos

Theses and Dissertations

Chemical Reaction Networks (CRNs) is a well-established model for analyzing distributed and concurrent systems. A central problem studied across CRNs is the reachability problem, which asks whether a target configuration can be obtained from a given initial configuration through a sequence of valid transitions. Classical CRNs are highly expressive but not Turing-universal; their reachability problem is Ackermann-complete, indicating extremely high computational complexity that nevertheless falls short of full universality.

In this thesis, we study Extended Models of Chemical Reaction Networks in which the dynamics of the system are modified. We analyze these models through two fundamental questions. First, simulation, we …

Examining Professional Self-Doubt And Professional Quality Of Life Among Licensed Professional Counselors In Texas, Celia A. Ramos

Theses and Dissertations

Licensed Professional Counselors (LPCs) in Texas frequently navigate emotionally demanding work, including high caseloads, complex client needs, and sustained exposure to client distress. Over time, these professional demands can contribute to stress, emotional fatigue, and job strain, increasing vulnerability to burnout and reducing professional quality of life (Bardhoshi & Um, 2021; Maor & Hemi, 2021; McCarthy et al., 2010; Thompson et al., 2014). This quantitative research study examined the professional quality of life of LPCs in Texas using the Professional Quality of Life Scale (ProQOL) based on gender, ethnicity, age, licensure type, years of experience, does work setting induce compassion …

From Clicking To Committing: Psychological Distance And Persuasion In Online Animal Adoption Platforms To Enhance Shelter Visitation, David Goodweather

Graduate Theses and Dissertations (2019 - present)

Online animal shelter platforms have become a primary channel through which potential adopters view and evaluate adoptable animals, yet many users do not progress from online engagement to visiting a physical shelter. The dissertation examines how online pet viewing translates into intention to book a shelter visit by focusing on the roles of psychological distance and persuasive influence cues within a high-involvement decision context. Drawing on Construal Level Theory and persuasion research, a sequential process is proposed in which sustained interaction with pet profiles reduces distance-related abstraction, increasing receptivity to influence cues that facilitate movement from initial assessment to action. …

Using Siamese Neural Networks To Effectively Detect Trojans In Fpgas When Trojans Manipulate Encryption Operations At The Bitstream Level, Kylie Arnett

Graduate Theses and Dissertations (2019 - present)

This research investigates security vulnerabilities in Field-Programmable Gate Arrays (FPGAs) at the bitstream level, focusing on hardware trojans (HTs) that manipulate encryption operations. This study addresses two critical questions: (1) The feasibility of exploiting FPGA bitstreams to selectively bypass encryption operations when a predefined input pattern is observed (all ones), thereby exposing sensitive data, and (2) the efficacy of Siamese Neural Networks (SNNs) in detecting such trojans with high accuracy. FPGAs are vulnerable to malicious modifications during manufacturing or deployment, posing risks to data integrity and system functionality. In this work, a trojan is inserted into a Xilinx series-7 FPGA …

Polyglot File Detection For Forensic Investigations, Chase Stevens

Graduate Theses and Dissertations (2019 - present)

As technology has become far more ubiquitous over the years, so too has the amount of digital evidence that can and needs to be collected and processed. Forensic tools are developed in response to the growing need, but are limited to what they are programmed to do. One such forensic tool is Autopsy, one of the most widely used open-source tools. Autopsy uses known file-type signatures (e.g., headers, trailers) to identify and recover files from forensic images. Polyglot files introduce a unique problem to both these forensic tools and investigators alike. In the context of the research conducted, polyglot files …

Exploring Clinical Reasoning In Occupational Therapy Students Using Think Aloud During Computerized Patient Simulation, Candra Selene Talylor

Graduate Theses and Dissertations (2019 - present)

The objective of this research was to explore the effects of the think aloud (TA) method on the development of clinical reasoning in occupational therapy students completing an online simulation assignment. The study aimed to determine if thinking aloud develops clinical reasoning in occupational therapy students as evidenced by a change in clinical reasoning skill scores and investigates the relationship between students' overall clinical simulation competency scores.

This study used a mixed methods design, combining quantitative and qualitative data to explore and measure the use of the TA strategy on the development of clinical reasoning skills. The sample from this …

Detecting Sophisticated Cyberattacks On Public Water Infrastructure, Ayrton Purdy

Graduate Theses and Dissertations (2019 - present)

In recent years there has been an increasing number of cyberattacks on public water generation and distribution systems. Advanced persistent attackers could usurp sensors and control systems to contaminate public drinking water. In order to conceal their malicious activity, they can manipulate sensor data flows to give the appearance of normal activity. The compromised sensors would report normal chemical levels even though unsafe water is entering the distribution system. In response, this research proposes a multi-sensor, cross-comparison approach to anomaly detection. The proposed approach is designed to detect sophisticated cyberattacks which are not easily detectable using traditional cyber tools. The …

Developing A Framework For Microchip Design Recovery, Eric Diep

Graduate Theses and Dissertations (2019 - present)

Due to the increase in diverse chip production over the past decade, reverse engineering has become a difficult and daunting task. This research develops a methodology for microchip design recovery, seeking to validate and reproduce prior approaches to physical reverse engineering using low-cost tools and techniques. We used mechanical hardware abrasion tools and techniques to delayer and capture silicon integrated chip (IC) layout. We focused on the Mifare Classic EVl microchip, commonly implemented in public transit/transportation cards, to extract information for design recovery. The research explores limitations and advantages of mechanical abrasion and optical microscopy in context to modem chip …

Manufacturing Systems: Characteristics And Dynamics, Alan J. Fitzmorris

Graduate Theses and Dissertations (2019 - present)

This research answers three basic questions. First, what are the behaviors (dynamics) of a manufacturing system in the context of system performance? Are these dynamics best described as linear deterministic, periodic, nonlinear deterministic, or stochastic? Second, what are the complexity (chaotic) characteristics of a manufacturing system, namely the maximal Lyapunov exponent, correlation dimension, and Kolmogorov-Sinai entropy? Third, is there a relationship between complexity characteristics and manufacturing system performance? This research involves four high level steps: data analysis, system dynamics analysis, system complexity analysis, and correlation analysis. The data analyzed consists of concrete plant and shipbuilding shop time series performance data. …

Meikyu, Diana D. Dyer

Graduate Theses and Dissertations (2019 - present)

This thesis explores the relationship between digital and physical practices through the integration of traditional glassworking techniques and digital media. The project combines glass fusing and glass blowing with woodworking, screen printing, vinyl cutting, animation, and augmented reality (AR) technologies to create dialogue between physical and digital forms. This thesis documents the full creative process, beginning with conceptual sketches and progressing through the fabrication and assembly of glass components into finished sculptural pieces. Digital technologies are then incorporated to augment and extend the physical artwork. Three-dimensional (3D) assets were created using Maya, a 3D modeling software, and implemented within Snapchat's …

Perceptions Of The Teacher Excellence And Accountability For Mathematics And Science Act On Rural Secondary Math Teachers' Practices, Motivation For Professional Development, Collaboration, And Job Satisfaction, Katina Stallworth

Graduate Theses and Dissertations (2019 - present)

The persistent shortage of qualified secondary mathematics and science teachers in rural schools has prompted states to adopt incentive-based policies aimed at improving teacher recruitment and retention. In Alabama, the Teacher Excellence and Accountability for Mathematics and Science (TEAMS) Act was enacted in 2021 to address these shortages through substantial salary supplements tied to professional development requirements and the relinquishment of tenure protections. While early reports indicate that the TEAMS program has increased the number of credentialed STEM teachers in classrooms, less is known about how participation in the program influences teachers' instructional practices, motivation for professional development, collaboration, and …

Narcissism And Eyewitness Identification, Haley M. Hearn

Graduate Theses and Dissertations (2019 - present)

According to the Innocence Project, 69% of individuals exonerated by DNA evidence were initially found guilty due to an eyewitness misidentification (Innocence Project, n.d.-a). A way that investigators attempt to prevent misidentification is by assessing how confident eyewitnesses are in their identifications. There is a large body of research suggesting that these confidence estimates can, in many instances, operate as reliable barometers of accuracy. However, what if an eyewitness is overconfident? Narcissism is a personality trait characterized by overconfidence. If a narcissistic eyewitness reports confidence in their identification of a suspect, should this report be trusted? Two studies were conducted …

Career Aspirations Of Generation Alpha In A Changing World: Perspectives Of Students, Parents, And Educators In Religiously Affiliated Private Schools, Cynthia Susan Grace

Graduate Theses and Dissertations (2019 - present)

This qualitative case study served as a needs assessment to examine how students, parents, and educators perceived and influenced career development within a contemporary high school context, with particular attention to Generation Alpha as its oldest members entered secondary education. To contextualize the study, research on prior generations and evolving career trajectories was reviewed to better understand the shifting landscape shaping this cohort's development. The study was grounded in Social Cognitive Career Theory (SCCT; Lent et al., 1994) and informed by a values-based perspective of purpose, examining the interaction between individual beliefs, contextual influences, and emerging career pathways. Data were …

Big Feelings, Fast Decisions: Emotion Regulation As A Moderator Of Impulsivity In Binge And Emotional Eating, Emma G. Folk

Graduate Theses and Dissertations (2019 - present)

Emotion-driven impulsivity and difficulties with emotion regulation are both associated with maladaptive eating behaviors, including binge eating and emotional eating. However, it remains unclear whether broader emotion regulation difficulties intensify the influence of impulsive responses to emotional states on these behaviors. This study examined whether emotion dysregulation moderates the relationship between emotion-driven impulsivity and maladaptive eating behaviors. Participants were 266 adults (ages 18–65) who completed measures of impulsivity, emotion regulation difficulties, binge eating, and emotional eating. Moderation analyses were conducted using PROCESS in SPSS, controlling for body mass index (BMI) and gender. Negative and positive urgency were significantly associated with …

Transition Experiences Of Early Middle College Completers: A Grounded Theory Study, Sarah Louise Drabik Cheatham

Dissertations

Early middle college (EMC) students arrive at universities academically prepared yet institutionally undefined, occupying a space between traditional first-year and transfer student identities. Emerging through the Early College High School Initiative, EMC programs were structured to expand college access by embedding college coursework within the high school experience (Edmunds et al., 2012; Edmunds et al., 2017a; Haxton et al., 2016; Miller et al., 2013). Students frequently graduate from EMC with significant college credit, up to an associate’s degree, and demonstrate strong rates of post-secondary credential attainment and accelerated progress toward a bachelor’s degree (Edmunds et al., 2012; Edmunds et al., …

Passive Microwave Remote Sensing Of Flash Drought Impacts On Vegetation, Quinton R. Deppert

School of Natural Resources: Dissertations, Theses, and Student Research

In 2002, Dr. Mark Svoboda characterized a new form of drought known as flash drought. Flash drought was defined as a rapid decline in vegetation health caused by severe heat and drought. In recent years, attempts to quantify the impacts of flash drought via precipitation, soil moisture, evapotranspiration, and temperature indicators have proliferated. What has rarely been quantified is what the rapid decline in vegetation health amid flash drought looks like through remote sensing. This is because vegetation health indices like the Normalized Difference Vegetation Index (NDVI) are derived from the visible and infrared regions of the electromagnetic spectrum and …

Associations Of Blood Biomarkers Of Glial Cell Dysfunction And Neuronal Injury With Future Cognitive Decline And Incident Dementia, Srishti Shrestha, Xiaoqian Zhu, B Gwen Windham, Kevin J Sullivan, Priya Palta, Rebecca F Gottesman, Russell P Tracy, Clifford R Jack, Petrice M Cogswell, Prashanthi Vemuri, Sudha Seshadri, Thomas H Mosley, Michael E Griswold, Myriam Fornage

Faculty, Staff and Student Publications

Introduction: Prospective studies of blood-based biomarkers reflecting pathogenic processes, other than Alzheimer-specific pathologies, that contribute to dementia in diverse cohorts are lacking.

Methods: We jointly fitted linear mixed-effect models and proportional hazards models to examine associations of midlife glial fibrillary acidic protein (GFAP), chitinase-3-like protein 1 (YKL-40), soluble cluster of differentiation-14 (sCD14), neurofilament light chain (NfL), total tau (t-tau), and ubiquitin C-terminal hydrolase L1 (UCHL1) levels in serum (collected in 1993 to 1995) with cognitive decline and incident dementia (ascertained over 29 years through 2022) in the community-based Atherosclerosis Risk in Communities Study. sCD14 and YKL-40 were measured in 3082 …