Digital Commons Network^™

Know Your Birth, Jasmine Mckelvey, Reagan L. Hunt, Michaela M. David

ELMSN E-Portfolio. A collection of Scholarly and Creative Works

Maternal mortality remains a significant public health concern in rural Kenya because of limited healthcare resources, inadequate emergency obstetric training, and barriers to accessing timely, high-quality maternal care. This quality improvement project evaluated the implementation of the Know Your Birth educational intervention, a culturally responsive, simulation-based training program designed to improve healthcare providers' knowledge, confidence, and competency in evidence-based maternal and newborn care. The project was conducted at Sega Dispensary in Sega, Siaya County, Kenya, and included 26 healthcare staff members. Guided by the Plan-Do-Study-Act framework, participants completed a brief educational presentation followed by three interactive skills stations focused on …

An Examination Of Leadership Approaches In Alcoholics Anonymous As Perceived By Its Members, Kelly J. Shaw

Masters Theses and Doctoral Dissertations

This research analyzed leadership dynamics within Alcoholics Anonymous (AA), a 12-step recovery group that operates without traditional organizational structures. Although AA's Ninth Tradition emphasizes minimal formal organization, it allows the formation of service boards and committees. This contradiction raises questions about how AA functions effectively without a clearly defined leadership model. Using a qualitative approach, this study aimed to identify the type of leadership present within AA and explore its impact on maintaining sobriety. Additionally, the study examined AA members' perceptions of leadership and how leadership is reflected in the organization's practices. Applying the six-phase reflexive thematic analysis by (2006), …

Sdrc Update (Volume 7, Issue 3), Dlsu Social Development Research Center

SDRC Publications

The August 2026 issue of SDRC Update highlights research that addresses emerging social and development challenges in the Philippines. This issue features the launch of the Towards Resilient Platform Work in the Philippines policy report, which presents recommendations on strengthening social protection and skills development for platform workers. It also showcases the Mind the Climate project, which examines the mental health impacts of climate change on Filipino youth living in climate-vulnerable communities. The issue concludes with a Researcher Spotlight on Ms. Ma. Angeles "Maeyet" G. Lapeña, recipient of the 2026 Evolutio Socialis Distinguished Researcher Award, recognizing her contributions to evidence-based …

A Word From The Writing Team (August 2026), Pam Walter, Mfa, Laura Deloretta, Phd

A Word From the Writing Team (Newsletter)

No abstract provided.

Positive Curvature And Discrete Abelian Symmetry, Lee Kennard, Elahe Khalili Samani, Catherine Searle

Mathematics

By replacing the torus with an elementary abelian two-group, we generalize Grove and Searle’s maximal symmetry result and Wilking’s half-maximal symmetry result for positively curved manifolds with an isometric torus action. © The Author(s) 2026.

Crystal Structure Of New Polar Rare Earth Borates Na2.62Ln2.12(Bo3)3 (Ln = Pr, Nd, Sm) Containing Isolated Bo3 Groups, Alevtina A. Maksimova, Mark D. Smith, Hans Conrad Zur Loye

Faculty Publications

Three new rare earth borates, Na2.62Ln2.12(BO3)3 (Ln = Pr, Nd, Sm), were synthesized via a high-temperature solution reaction using a BaCO3–H3BO3–NaF flux and structurally characterized by single-crystal X-ray diffraction analysis. The compounds crystallize in the orthorhombic space group Amm2 with lattice parameters a = 5.0985(10) Å, b = 11.180(2) Å, c = 7.1483(14) Å, and a unit cell volume of 407.48(14) ų (Z = 2) for Na2.62Pr2.12(BO3)3, a = 5.0983(10) Å, b = 11.181(2) Å, c = 7.1491(14) Å, and a unit cell volume of 407.51(14) ų (Z = 2) for Na2.62Nd2.12(BO3)3, and a = 5.08630(10) Å, b …

A Stabilized Weighted Interior Penalty Method For Thermal Convection Model In Heterogeneous Porous Media, Yuanyuan Hou, Qianqian Ding, Xiaoming He, Yanping Lin

Mathematics and Statistics Faculty Research & Creative Works

In this article, we propose and analyze a stabilized weighted interior penalty method for solving the thermal convection problems in heterogeneous porous media. We first transform the thermal convection model into the pressure primal form with homogeneous Neumann boundary condition and develop a symmetric weighted interior penalty method to handle the discontinuous Darcy number and automatically adjust the penalty coefficient corresponding to the varying permeability. Then we recover the velocity by a stabilized method and incorporate it into the energy equation to obtain the temperature. The stability and convergence rates of the numerical solutions are rigorously proved and verified by …

Single Crystal Growth Of The Orthoborate Nabalu(Bo3)2 And Optical Investigation Of Eu3+ And Tb3+ Doped Nabalu(Bo3)2, Alevtina A. Maksimova, Mark D. Smith, Lakshani W. Masachchi, Hans Conrad Zur Loye

Faculty Publications

Sodium barium lutetium borate NaBaLu(BO₃)₂ crystals were synthesized using a high-temperature solution method. The crystal structure of this layered orthoborate is described and corresponds to that of an extensive orthoborates family, NaBaR(BO₃)₂ (R = Sc, Y, Yb, Tb – Lu). NaBaLu(BO₃)₂ was doped by Eu³⁺ and Tb³⁺ to explore its performance as a host material and to investigate the luminescent properties of the Eu³⁺ and Tb³⁺ doped materials. The emission spectra of the NaBaLu(BO₃)₂:Ln (Ln = Eu, Tb) crystals are presented. The most …

The True Scope Of Trusting Your Gut: A Study Into The Enteric Nervous System And The Relationship Between The Gut-Brain Axis And The Mind, Bryan Pham

Theses & ETDs

Since the early days of medicine, the “gut” had been associated as a seat of emotions and intuition, but as modern science marched forward, the brain itself was given complete dominion over mental health. But thanks to research into the enteric nervous system (ENS), which innervates the digestive tract and bilaterally communicates with the brain as a secondary function, we now know that, in a sense, the gut does indeed have a substantial impact on mental health outside of its primary functions. This profound discovery could potentially cause a massive rewrite for decades of modern neuroscience-based medicine. Overall, the study …

Student Study Teams For Child Find: Identifying Barriers In A Rural School District, Malynda Ivory

All Graduate Reports and Creative Projects, Fall 2023 to Present

This project explores the challenges associated with the teacher referral process for students at risk of academic and behavior difficulties in a rural school. The Student Study Team (SST) plays an important role in identifying and supporting students; yet, teacher engagement with the referral process is inconsistent in my K-4 school. Teacher participation in our school is low.  Referrals mostly occur after parent-teacher conferences, and teacher participation in the lower grades (K-2) is noticeably lower than referrals from our 3^rd and 4^th grade teachers. Many factors, including limited understanding of the SST’s purpose, time constraints, and perceived effectiveness …

Graph-Based Machine Learning For Multivariate Time Series Prediction In Scientific Domains: Streamflow Forecasting And Solar Flare Prediction, Kishore Ragul Alagarsamy

All Graduate Reports and Creative Projects, Fall 2023 to Present

Machine learning methods applied to multivariate time series data have emerged as powerful tools across a range of scientific domains. This report examines two distinct application areas in which such methods yield actionable predictive insights: hydrological streamflow forecasting and solar flare prediction in space weather.

In the domain of streamflow forecasting, a Two-Graph Spatio-Temporal Graph Neural Network (Two-Graph STGNN) was developed to predict river discharge across a 20-station network in the Upper Colorado River Basin. The architecture separates hydrological and meteorological feature streams into two complementary graph representations and fuses them through a learned attention mechanism. Systematic evaluation across 23 …

Criticality In A Heterogeneous Neutron Transport Rod Model, Samuel Kaleb Crowford

All Graduate Reports and Creative Projects, Fall 2023 to Present

This work studies the stochastic behavior of neutron populations in a one-dimensional rod model using Monte Carlo simulation. The first part of this project reproduces the computational results of Dumonteil, Horton, Kyprianou, and Zoia (2025) by independently implementing the Monte Carlo algorithm described in their article, with the asymptotic behavior of the first moment analyzed in relation to the dominant eigenvalue and adjoint eigenfunction of the neutron transport operator. The model is then extended to a heterogeneous setting by introducing a central region where fission is suppressed. A global expectation over initial positions and directions is used to estimate the …

What Drives Schoolchildren's Food Choices? Insights From A Gamified Stated-Preference Choice Experiment In Tunisia, Ali Chalak, Christelle Akl, Joanne Haddad, Nehmat El Helou, Sonia Sassi, Houda Ben Gharbia, Rawan Traboulsi, Marc Haber, Jalila El Ati, Hala Ghattas Ph.D.

Faculty Publications

This paper models the drivers of schoolchildren's food choices in urban Tunisia using a gamified Stated-Preference Choice Experiment (SPCE), which includes scenario attributes (food placement, preparation, and price) and contextual factors (parental/peer modeling eating behaviors). A representative sample of 2465 schoolchildren aged 8 to 12 years in Greater Tunis participated in a SPCE, which simulates real-life food choice scenarios on a typical school day. The game includes six nodes (breakfast, recess, lunch, snack on the road to/from school, afternoon snack, dinner) in various locations (home, school, neighborhood). Each choice task includes nine items to choose from (3 beverages, 3 side-meals, …

Molecular Refinement Of The Taxonomy Of Pyrgulopsis Springsnails In Western North America, Michael K. Young, Kristine L. Pilgrim, Eric S. Miskow, Chante L. Lundskog, Kathryn E. Perez, Michael K. Schwartz

School of Integrative Biological & Chemical Sciences Faculty Publications

Springsnails in the genus Pyrgulopsis in western North America have long been a dilemma for taxonomists. Defining species boundaries has been complicated by the presence of undiscovered or cryptic taxa, range over- or underestimation, species complexes representing an unknown number of species, and named species synonymous with other taxa. To address these issues, we conducted an array of molecular species delimitation analyses using sequences from up to 2 mitochondrial and 2 nuclear genes from over 5000 specimens representing 140 of the 151 currently recognized taxa. These analyses reaffirmed most species hypotheses, favored synonymy for some taxa and redrawing of species …

The Extension Of The Arbitration Clause To Non-Signatories In Qatar's Construction Arbitration: A Study Under Law No. 2 Of 2017, Nazir Hasen Ikhlayel

Maurer Theses and Dissertations

This dissertation examines whether an arbitration clause in a construction contract governed by Qatar Arbitration Law No. 2 of 2017 can be extended to a non-signatory party. The study addresses a problem that arises in major construction projects, in which employers, main contractors, subcontractors, consultants, and suppliers are linked by separate yet interdependent contracts. At the same time, arbitration remains structured around bilateral consent.

The importance of the study lies in its relevance to Qatar’s legal and economic development. Qatar’s major infrastructure projects, including those accelerated by the 2022 FIFA World Cup and those continuing under Qatar National Vision 2030, …

Automated Guided Wave Characterization Of Marcelling: In-Plane Fiber Waviness In Thermoplastic Composites, Sourav Banerjee, Ana Tudor, Corey Leydig, Thomas Ferguson, Tally Bovender, Darun Barazanchy, Josh Widosky, Paul Ziehl

Faculty Publications

Thermoplastic composite (TPC) materials often develop in-plane fiber waviness during manufacturing, a defect known as marcelling. Marcelling negatively impacts the strength and overall performance of the composite and are hard to control. While it may appear as a surface imperfection, it can also extend partially through the thickness of the material. Currently, there is no established nondestructive evaluation (NDE) method to reliably detect and quantify marcelling in composites after manufacturing. As marcelling is not a local defect but spans across the surface in in-plane dimensions of the structure, traditional pulse-echo and phased-array ultrasonic NDE are ineffective. Automated multi-directional guided …

Reliability Generalization Of The Learning Transfer System Inventory, Ashlee Tolliver

Human Resource Development Theses and Dissertations

The purpose of this dissertation research was to examine variability in coefficient alpha estimates across the 16 Learning Transfer System Inventory (LTSI) constructs and evaluate reliability-reporting practices within the literature using a reliability generalization meta-analysis. Studies published between 1997 and 2025 were identified through database searches and a review of Academy of Human Resource Development conference proceedings. Following screening and listwise deletion, 118 studies were included in the final analyses. Unweighted mean coefficient alpha estimates were calculated, and ordinary least squares regression and commonality analyses examined the influence of instrument version, translation status, and full or partial use. Reliability estimates …

Juvenile Lifers: Adapting To Life While Doing Life, Tristin Faust

Theses, Dissertations and Culminating Projects

This qualitative study examined psychosocial maturation among individuals sentenced to life imprisonment for offenses committed during adolescence. Archival interview and survey data were analyzed for 30 men who had been resentenced and released after serving an average of 31 years in prison. Findings revealed a developmental progression across four stages: pre-incarceration, initial incarceration, catalysts for change, and later incarceration. Participants described entering prison with developmental immaturity compounded by trauma, unstable home environments, educational disruption, and antisocial peer influence. Their early years of incarceration were marked by anger, fear, misconduct, and survival-oriented behavior. Over time, participants identified discrete events and ongoing …

Examining Social Anxiety And Barriers To Engagement In School-Based Mental Health Services Among Black American Adolescents, Taylor Walls

Theses, Dissertations and Culminating Projects

Social anxiety is common among Black American adolescents, though research examining the experience of social anxiety among this population is very limited. Furthermore, few studies have explored how sociocultural factors, such as racial discrimination and mental health stigma, may shape Black American adolescents’ perceptions of social anxiety and school-based mental health services. Using qualitative methods, the present study explored Black American adolescents’ perceptions of social anxiety, barriers to help-seeking, and views regarding school-based mental health services. A total of 15 Black American high school students in the northeastern United States (ages 14-15 years; M=16.0, SD=1.2) participated in focus groups and …

Cognitive Flexibility In Broader Autism Phenotype: Does Bilingualism Benefit And Emotion Hinder?, Nardin M. Yacoub

Theses, Dissertations and Culminating Projects

The broader autism phenotype (BAP) is a milder manifestation of autistic traits just below the clinical threshold for Autism Spectrum Disorder (ASD), and provides a framework for studying and defining these traits in individuals related to autistic people. Cognitive flexibility (CF) is an executive functioning (EF) skill characterized by the ability to switch between tasks or thoughts based on environmental demands. The current study examined whether BAP was associated with CF and how bilingualism and emotion influenced this relationship across development. Previous research has found that bilinguals show enhanced task-switching abilities. Individuals with BAP may show differences in emotional processing, …

Development And Validation Of A Multidimensional Measure Of Role Ambiguity: Integrating Nlp-Based Factor Analytic Techniques With Traditional Psychometrics, Md Allama Ikbal Sijan

Theses, Dissertations and Culminating Projects

This dissertation developed and validated the Multidimensional Role Ambiguity Scale (MRAS), a measure that separates role ambiguity into five subdimensions: goal/expectation/responsibility ambiguity, process ambiguity, priority ambiguity, behavior ambiguity, and performance criterion ambiguity. Although role ambiguity is one of the most studied role stressors in organizational research, it has been measured largely as a single global score, a practice that masks differences among its facets and may explain the inconsistent criterion relationships reported in prior work. Scale development followed the three-step framework of Singh and Rhoads (1991). Thirty items were generated from working definitions grounded in role theory, and fifteen research …

Predictors Of The Mother-Infant Bond: The Role Of Maternal Attachment Style, Parity, Race, And Motherhood Expectations, Samia Qadri

Theses, Dissertations and Culminating Projects

This study examined how maternal attachment style, parity, race, and motherhood expectations, individually and in interaction, predicted the quality of the mother-infant bond during the postpartum period. Grounded in a maternal feminist framework, the study used a quantitative, cross-sectional correlational design. Postpartum mothers aged 20–39 (N = 87) completed validated measures of maternal attachment style, motherhood expectations, mother-infant bonding, and depressive symptoms. Multiple regression compared a Primary Model containing the four focal predictors and planned interaction terms with a Secondary Model that added maternal depressive symptoms as a covariate. Depressive symptoms emerged as the strongest single predictor of bonding, and …

Validating The Expression Of Genes Potentially Involved In The Development Of Aggressive Melanoma Tumor In The Zebrafish Melanoma Model, Mayra Matos Diaz

Theses, Dissertations and Culminating Projects

Melanoma is an aggressive form of skin cancer characterized by rapid progression, metastatic potential, and the frequent development of resistance to targeted therapies. Although the Inducible cAMP Early Repressor (ICER) has been identified as a potential tumor suppressor in melanoma, the molecular mechanisms underlying its role in tumor progression remain poorly understood. Building upon the transcriptomic findings of Wheelan et al. (2025), this study investigates the relationship between ICER and ten candidate genes (gdf6a, pdgfra, col4a4, fgfr2, pdgfrb, cdkn1a, fgf5, akt1, met, and notch3) associated with BMP signaling. Quantitative polymerase chain reaction (qPCR) was used to compare gene expression between …

Temperature And Salinity Effects On The Physiology Of Bullfrog Tadpoles (Lithobates Catesbeianus) From A Suburban Temperate Wetland, Angela Brown

Theses, Dissertations and Culminating Projects

One of the most robust amphibians is the American Bullfrog, Lithobates catesbeianus, which is a widespread species that is invasive worldwide, and is broadly tolerant of a range of environmental conditions. Despite this tolerance, survival and performance of adult L. catesbeianus can be negatively affected by increasing temperatures and salinity resulting from anthropogenic impacts, such as climate change and road salts. This study focuses on the effects of acute salinity exposure (mimicking road salt influx into a pond) on L. catesbeianus tadpoles at different larval stages. Increased salinity was predicted to negatively affect two physiological performance measures. Critical maximum temperature …

2026-08-18 Executive Council Minutes, Susie Salazar

Executive Council Minutes

No abstract provided.

2026-08-06 Executive Council Minutes, Susie Salazar

Executive Council Minutes

No abstract provided.

2026-07-21 Executive Council Minutes, Susie Salazar

Executive Council Minutes

No abstract provided.

2026-05-28 Executive Council Minutes, Susie Salazar

Executive Council Minutes

No abstract provided.

Exploring The Democracy And Climate Policy Nexus, Democracy Mechanisms, And Policy Volatility, Brenna Magliacane

Theses & ETDs

A growing area of climate research explores the forms of government best equipped to confront the climate crisis and shape long-term environmental policy. The theories amongst this research seem to advocate for polar solutions: authoritarianism or democracy. Climate change and related ecological challenges increasingly test the capacity of existing political systems to deliver timely and effective responses. This research project aims to answer the questions: To what extent does democracy influence the adoption and implementation of national climate policy? How do democracies and autocracies differ in the strength and durability of their climate policies? Investigating this relationship can inform future …

The Startup: Critical Perspectives On Technology Entrepreneurship And Digital Labor, Kochav Koren

All Duquesne Faculty Scholarship

Communication and media studies are rapidly reshaped by socio-technological forces within the framework of informational capitalism, where startups emerge as key drivers of the global creative economy. This study critically examines the global startup movement through political economy, classical sociology, and Southern perspectives to assess whether digital entrepreneurship fosters genuine, decentralized innovation or perpetuates speculative financialization and labor precarity. Employing a multi-layered theoretical framework—including Schumpeterian creative destruction, Marxist commodity fetishism, and Weberian charismatic authority—and qualitative fieldwork across North and Latin American tech hubs, the analysis reveals startups as network enterprises that both disrupt markets and reproduce structural inequalities. The findings …