Digital Commons Network^™

Psychological Stress And Its Association With Bronchial Asthma In Saudi Arabia: A Cross-Sectional Study, Alaa A. Bugis, Faisal A. Turkestani, Mohammed E. Ahmed, Mohammed M. Alqahtani, Abdullah K. Alnafisi, Bassam O. Alamri, Alhasan M. Algobayshi

Saudi Medical Journal

ABSTRACT Objectives: To investigate the psychological stress and its association with bronchial asthma in Saudi Arabia, focusing on the mechanisms by which stress affects asthma. Methods: This cross-sectional study included 733 adults with asthma aged ≥18 years and was carried out between October 2022 and May 2023 in Saudi Arabia. Data were obtained using an online questionnaire assessing asthma severity and stress levels. Results: Cronbach’s alpha indicated that the reliability of the stress scale was 0.728 and the reliability of the asthma control tool was 0.819. Of the participants, 52% were women and 48% were men, with 48.7% aged 18-26 …

Giving Voice To The Youngest Patients: Rethinking Pediatric Communication In Pharmacy Practice, Haifa F. Alotaibi

Saudi Medical Journal

No abstract provided.

Does Cancer Treatment Affect Connections In The Brain?

Saudi Medical Journal

No abstract provided.

Do Disasters Delay Early Cancer Diagnoses?

Saudi Medical Journal

No abstract provided.

Who Launches First-Ever Guidelines On Meningitis Diagnosis, Treatment And Care

Saudi Medical Journal

No abstract provided.

Development Of Aczel-Alsina Aggregation Operators In Neutrosophic Cubic Sets For Multi-Expert And Multi-Criteria Weighting: Optimizing Alternative Fuel Technology Selection, Majid Khan, Muhammad Gulistan, Aitazaz A. Farooque, Mohammed M. Al-Shamiri, Witold Pedrycz

Neutrosophic Systems with Applications

Managing vague and uncertain data has long been a challenge in decision-making (DM), particularly in scenarios where criteria and expert assessments play a critical role. This paper introduces operational laws based on Aczel-Alsina (AA) norms within Neutrosophic Cubic Sets (NCS) to more effectively handle uncertainty. Leveraging these operational laws, we propose two aggregation operators: the Neutrosophic Cubic Aczel-Alsina Weighted Averaging (NCAAWA) and the Neutrosophic Cubic Aczel-Alsina Weighted Geometric (NCAAWG) operators. These provide a comprehensive approach to data aggregation, preserving both additive and multiplicative influences on outcomes in complex systems. In DM, the importance of weights is paramount, and we introduce …

Borderplex Business Barometer, Volume 9, Number 5, Thomas M. Fullerton Jr., Steven L. Fullerton, Alejandro Sandoval-Murillo

Border Region Modeling Project

No abstract provided.

Essays On Institutions And Human Capital, Xiaofan Zhu

Dissertations and Theses Collection (Open Access)

This dissertation investigates the critical role of political and culturally embedded institutions in shaping human capital investment and firm behavior, focusing on three distinct but related areas. Chapter 1 investigates how institutional quality influences educational choices in China, with a focus on behavioral responses to the anti-corruption campaign. The study finds that politically connected students from regions more a!ected by the campaign are significantly more likely to pursue further education – especially those with non-STEM majors, weaker academic performance, and stronger political ties. The analysis of underlying mechanisms suggests that as the employment environment became more equitable, connected individuals responded …

The Effects Of Income On Infant Health: Evidence From The Coal Boom And Bust, Chu Gek Chew

Dissertations and Theses Collection (Open Access)

An individual’s health at birth is an important component in human capital accumulation, posing significant implications both in the short- and long-run. I investigate how infant health outcomes were impacted during a period of successive positive and negative economic shocks led by the coal industry between the 1970s to 1990s. Using exogenous variation within counties’ pre-existing coal reserves, I instrument for the changes in economic opportunities during the coal boom and bust. I find some limited evidence that an increase in income improves infant health outcomes. The incidence of low birthweight is decreasing in earnings growth, and effects are stronger …

Does Moving From One-Story Building To Multi-Building Affect The Health Status Of The Elderly: Evidence From China’S Par Program, Lu Cao

Dissertations and Theses Collection (Open Access)

This study investigates the causal impact of relocating from single-story to multistory buildings on the health outcomes of elderly residents in China. Using China’s Poverty Alleviation Relocation (PAR) program as an exogenous policy shock, we employ instrumental variable and difference-in-differences approaches to establish causality. Our analysis of data from the China Health and Retirement Longitudinal Study (2011-2018) reveals a nuanced relationship between vertical living and elderly health. While relocation to multi-story buildings is associated with deterioration in self-reported physical health status, it significantly improves mental health conditions and life satisfaction among elderly movers. We identify two key mechanisms driving these …

Intraday Volatility In Financial Markets: Evidence From High-Frequency Data, Haolin Wang

Dissertations and Theses Collection (Open Access)

In this study, we conduct an analysis of intraday spot volatility using high-frequency data from the SPDR S&P 500 ETF (SPY). We begin with the assumption that the intraday volatility of asset prices exhibits time-variation. To capture this dynamic behavior, we construct proxies for the unobserved spot volatility by applying appropriate estimators to the high-frequency price data. Following the estimation procedure, we employ various forecasting models to generate volatility forecasts. Finally, we evaluate and compare the predictive performance of these models using established forecast evaluation metrics, and analyze the results.

Determinants Of Trading Prices In State-Owned Asset And Equity Transactions: An Empirical Analysis From China, Lixiao Chen

Dissertations and Theses Collection (Open Access)

This thesis examines the determinants of pricing outcomes in state-owned asset transactions using a comprehensive dataset of 3,638 transactions from a major transitional economy. Contrary to conventional expectations, we find that fixed assets consistently receive less favorable pricing compared to equity assets, with significantly lower odds of trading above professional valuation and higher odds of trading below valuation. This pattern persists across multiple specifications and remains robust to propensity score matching approaches that address selection concerns. I further demonstrate that state-owned buyers secure significant advantages in transaction pricing, with dramatically lower odds of paying premiums over valuation or listing prices …

Nature Of Smartphone Use: The Underlying Mechanisms Between Nature Exposure And Urge To Use Social Media, Jia Yi Aw

Dissertations and Theses Collection (Open Access)

The urge to use social media is prevalent and costly in modern society. However, little has been researched on how nature exposure can manage urge to use social media to combat its negative consequences. It was hypothesized that nature exposure through Instagram posts in Study 1 and nature park in Study 2 reduces urge to use social media. The underlying mechanisms were tested in a theory-driven serial mediation model, in which positive emotions, attention restoration and self-regulation served as serial mediators. Study 1 employed Instagram experimental manipulation in a laboratory setting by randomly assigning 206 undergraduates to view Instagram accounts …

Disentangling User Preferences Towards Self-Interpretable Recommender Systems, Nhu Thuat Tran

Dissertations and Theses Collection (Open Access)

Understanding user preferences remains a central challenge in recommender systems due to their inherently complex, unstructured, and multi-faceted nature, exacerbated by the sparsity of user interaction data. Traditional approaches often compress user interests into a single latent vector, overlooking the fact that user preferences are typically shaped by multiple underlying factors that differ across individuals. These latent drivers are not directly observable and must be discovered through unsupervised modeling, further complicated by limited historical interactions per user.

This dissertation addresses these challenges by introducing a principled framework for multiinterest modeling, which disentangles user behaviors into multiple latent factors to better …

Tailoring Transformer-Based Deep Learning For Code Generation And Translation, Imam Nur Bani Yusuf

Dissertations and Theses Collection (Open Access)

Software is increasingly pervasive in modern society, making the effective translation of human intent into code essential. Novice programmers often struggle with domain-specific code due to limited background knowledge, while experienced developers face challenges in maintaining evolving largescale codebases. Traditional pattern-based approaches address these issues, but such approaches are task-specific and require significant adaptation for different tasks. Transformer-based models offer a more flexible alternative, as the same architecture can be tailored for diverse programming tasks.

This dissertation investigates how Transformer-based models can be customized for various code generation and translation tasks. First, it introduces Transformer-based approaches that assist end-users with …

Empirical Program Evaluation In Operations Management, Kai Tian

Dissertations and Theses Collection (Open Access)

This dissertation focuses on advancing and applying empirical program evaluation methodologies in Operations Management (OM), defining it not as mere prediction but as rigorously establishing causal effects of interventions. Chapter 2 lays the theoretical groundwork, defining empirical program evaluation within OM, detailing its alignment with causal inference, and outlining both classical econometric techniques and emerging Causal Machine Learning (CML) approaches for mitigating endogeneity. Building on this foundation, Chapter 3 presents an empirical application, evaluating the causal impact of a customer targeting strategy using live-streaming advertisements, employing Propensity Score Matching (PSM) in conjunction with linear regression models to derive actionable insights …

Rewriting The Rules: Impact Of Covid-19 On Norms In Science, The International Order, And China, Jacob Kissling '25

Honor Scholar Theses

The Covid-19 pandemic exposed both strengths and vulnerabilities in global responses, many of which were shaped by underlying norms and behavioral expectations within key institutions. Understanding how these norms influenced decision-making, collaboration, and communication—and how they were themselves challenged or reshaped by the crisis—can provide valuable insights for improving future responses. While some norms adapted in response to the evolving crisis, others remained stagnant or were inconsistently enforced, contributing to fragmented and, at times, ineffective responses. This paper investigates the role of norms in three critical sectors: the scientific community, the international order, and China. Within the scientific community, norms …

Those Magnificent Men In Their Fighting Machines: An Investigation Into The Lives Of Wwi Tankmen, Lucas C. Campbell

Master's Theses

This thesis will look at the immense backlog of war diaries, journals, personal letters, government documentation, and oral histories left behind by British tank crewmen of the First World War. The purpose of this investigation is mainly to uncover the reasons that individuals were chosen for transferal into the Royal Tank Regiment, where they were transferred from, what their training consisted of before their deployment, and their combat history once they were sent into the battlefields on the Western Front. The goal of this project is to gauge the reaction to the emergence of this crucially important technology on a …

Empowering Narratives Or Marketing Strategy? Nigerian Audience Reactions To Femvertising In The “Joy Soap ‘My Life, My Script’ Campaign”, Oare Danielle Addeh

Master's Theses

Guided by Feminist Theory, this thesis examines how audience responses to Joy Soap’s ‘My Life, My Script’ campaign reflect, reinforce, or resist dominant gender norms in Nigerian society. Positioned as a form of femvertising, the campaign aims to challenge traditional expectations placed on women and promote narratives of empowerment. However, audience reactions reveal a complex negotiation of cultural values, personal experiences, and shifting gender ideologies.

This study uses Critical Discourse Analysis to examine purposively sampled comments from the campaign’s Instagram comment section, focusing on four selected episodes. The analysis identifies discursive patterns that reveal key themes, including the reinforcement and …

Doin' Time: Entertainment And Exploitation At Decommissioned Prison Museums In The United States, Jessi Robbins

Master's Theses

This thesis aims to explore how decommissioned prison museums in the US, such as Brushy Mountain State Penitentiary (BMSP), shape societal attitudes and understanding of the carceral system as a whole and the presence of systemic racism within by addressing three questions: (1) What histories do prison museums tell, and which are erased?, (2) How do objects displayed in prison museums reflect past and present racial attitudes toward the incarcerated?, and (3) Does visiting or working at a prison museum affect individual attitudes regarding the US carceral system? Grounded in James Scott’s (1992) concept of “hidden transcripts” and Michel Foucault’s …

Assessing Chatgpt's Capability As A New Age Standardized Patient: Qualitative Study, Joseph Cross, Tarron Kayalackakom, Raymond E. Robinson, Andrea Vaughans, Roopa Sebastian, Ricardo Hood, Courtney Lewis, Sumanth Devaraju, Prasanna Honnavar, Nikhilesh Anand

School of Medicine Publications

Background: Standardized patients (SPs) have been crucial in medical education, offering realistic patient interactions to students. Despite their benefits, SP training is resource-intensive and access can be limited. Advances in artificial intelligence (AI), particularly with large language models such as ChatGPT, present new opportunities for virtual SPs, potentially addressing these limitations.

Objectives: This study aims to assess medical students' perceptions and experiences of using ChatGPT as an SP and to evaluate ChatGPT's effectiveness in performing as a virtual SP in a medical school setting.

Methods: This qualitative study, approved by the American University of Antigua Institutional Review Board, involved 9 …

Measles, Children's Mercy Kansas City

Clinical Pathways

No abstract provided.

Making Tabby, Making Place: Examining A Gullah Geechee Wattle And Tabby Daub Dwelling Through Thin Section Analysis, Jacob E. Hamill

Graduate Masters Theses

Tabby is a building material made from lime, sand, oyster shell, and water that is geographically associated with the Sea Islands of South Carolina, Georgia, and Florida. This material was used from the early 18^th century to end of the American Civil War to construct all-manner of buildings in the Sea Islands region. Enslaved African descendant communities constructed wattle and tabby daub dwellings within plantation landscapes, and these settlements are interpreted as spaces where enslaved people exercised greater spatial autonomy.

This thesis analyzes the remains of a wattle and tabby daub structure located on what was once Old Fort …

Advancing Marine Animal Movement Studies Using An Open Innovation Framework, Jacob Levenson

Graduate Doctoral Dissertations

This dissertation investigates the application of open innovation to migratory marine animal movement studies, addressing critical challenges in understanding, managing and ultimately conserving highly mobile and migratory species (HMMS). The species examined herein, including manta rays, sea turtles, and marine mammals, face threats including habitat disruption and behavioral changes to adapt to anthropogenic stressors. Traditional monitoring techniques, while valuable, are often costly, limited in scale, and protected by proprietary intellectual property, all of which decrease accessibility. Ambitious conservation goals, such as protecting 30% of the ocean by 2030, require more data that are indubitably sharable and thus will need to …

A Worker-Centered Study Exploring Trust, Dependency, And Worker Identity In Digital Platform-Mediated Labor, Wael Altali

Graduate Doctoral Dissertations

Digital gig platforms have transformed labor markets globally. This dissertation critically examines the intersections of platform design and worker experiences through four interrelated studies. The research identifies how differences between on-demand and cloud work platforms shape identity, trust, and autonomy.

Drawing on Cultural Domain Analysis, the first study proposes a practical classification system for digital gig platforms. Experts categorize platforms as on-demand or cloud work, avoiding theoretical subtypes like skill level. This framework supports targeted analyses of platform design and regulatory implications.

The second and third studies examine the paradoxes of worker identity in platform-mediated environments. A survey of 268 …

“From The Synagogue To The Streets”: Outsider Rabbis, Mississippi, And The Civil Rights Movement, Holli Elaine Parker

Master's Theses

The historiography of Jews in the Civil Rights Movement is extensive, and recent scholarship has reevaluated the relationships between Jews and civil rights organizations. The role of southern Jews in critical states, such as Mississippi, is often amalgamated into one category: supportive but scared. The focus on two rabbis known for their outspokenness regarding racial equality, Charles Mantinband of Hattiesburg and Perry Nussbaum of Jackson, is central to most southern Jewish studies. However, it neglects aspects of their background. Neither rabbi was a native Mississippian nor accepted as truly Southern due to the stances they took regarding racial equality. Charles …

Key-Based Authentication Scheme For Evtol Drones Using Chebyshev Chaotic Maps, Eduardo A. Hernandez Escobar

Master's Theses

The development of electric Vertical Take-Off and Landing (eVTOL) drones signifies a substantial advancement in urban air mobility, ready to transform transportation models in densely populated regions. These advanced drones, distinguished by their capacity to function in limited spaces and their minimized environmental impact, are set to transform individual, shipping, emergency services, and public safety activities. Nonetheless, like any transformational technology, the implementation of eVTOL systems presents many challenges, especially in the realm of cybersecurity. Adding many devices and entities to an eVTOL network increases the risk of privacy and security attacks. This paper proposes a key-based authentication scheme that …

Ghana’S Shift From Non-Alignment To Alignment: A Comparative Case Study Of Foreign Policy Under Geopolitical Pressures, Bernice Owusu

Master's Theses

With the geopolitical landscape experiencing significant dynamic shifts, the rise of global powers like China and Russia is putting pressure on non-aligned countries to adjust to the new realities. This thesis examines the evolving nature of Ghana’s foreign policy from non-alignment to alignment due to geopolitical pressures. Using a comparative case study of Ghana and Zambia, the thesis analyzes how economic dependency, military cooperation, and diplomatic behavior— especially with the United States—have influenced Ghana’s foreign policy trajectory between the Cold War and the post-2010 period. Through analysis of policy documents, defense agreements, and United Nations General Assembly voting records, the …

A Herpetofaunal Inventory Study Of Two National Wildlife Refuges In The Mississippi Delta And Associated Evaluation Of Trapping Efficacy, Andrew Holzinger

Master's Theses

The objectives of this project were to record the diversity and distribution of amphibian and reptile species present at Panther Swamp and Hillside National Wildlife Refuges (NWR) and to quantify trapping efficacy as a result of various methodologies under different habitat variables. The primary methods employed were two varieties of drift fence trap arrays consisting of 100-foot sections of silt fencing with buried 2.5-gallon buckets as pitfall traps and box traps placed at the end of each fence to capture larger organisms. When conditions permitted, aquatic trapping was also employed across the Refuges. A total of 55 species were documented, …

Population Estimates, Demography, And Habitat Assessment Of The Pearl River Map Turtle (Graptemys Pearlensis) In The Pearl River Drainage Of Mississippi, Noah Devros

Master's Theses

The Pearl River map turtle (Graptemys pearlensis) is a highly riverine Emydid endemic to the Pearl River drainage of central and southern Mississippi and southern Louisiana. First described in 2010, G. pearlensis was listed as federally Threatened in 2024. . Due to its relative novelty as a species, no rigorous site-specific population estimates of G. pearlensis in Mississippi have been conducted. The primary goal of this study was to implement a replicable method of assessing the population of G. pearlensis throughout the Pearl River drainage system of Mississippi. A secondary goal was to describe habitat associated with G. …