Digital Commons Network^™

Evaluation Of Two-Group Iate Coupling With Pbe For Beyond Bubbly Flows In A Large Diameter Pipe, Sungje Hong, Joshua P. Schlegel, Subash L. Sharma

Nuclear Engineering and Radiation Science Faculty Research & Creative Works

This study evaluates the two-group interfacial area transport equation (2G IATE) coupled with the S-Gamma (Sγ) population balance equation (PBE) model for beyond bubbly flow regimes in a vertical large-diameter pipe. The 2G IATE framework incorporates intergroup mass transfer mechanisms and is implemented within the Sγ model, which assumes a log-normal bubble size distribution. The numerical approach is validated against experimental data from Schlegel et al. (2012), with a focus on the void fraction and interfacial area concentration (IAC) distributions. The results show that 2G IATE improves the predictions of the void fraction and IAC, although its accuracy varies with …

Teaching Digital Evangelism And Web Design As Redemptive Work For The Women Of The Northeastern Conference Of Seventh-Day Adventists, Brenda Michele Rhyne

Doctor of Ministry Projects

Problem.

The COVID-19 pandemic eliminated thousands of jobs, including positions held by women within the Northeastern Conference of Seventh-day Adventists. Unemployment and underemployment may contribute to diminished self-esteem and adverse mental-health outcomes. The problem of unemployment and underemployment is not simply economic—it is theological.

For women in the Northeastern Conference, the lack of an ordered pathway to explore technology-related fields as a career option represents both an economic and a spiritual loss. A course combining technical and evangelistic training may promote members' involvement in evangelistic initiatives (i.e., TMI) while simultaneously providing technological skills. Also, women who do not regularly use …

Dietary Intake And Predictors Of Healthy Eating In Midwestern American College Students: An Observational Study †, Anna Peluso Simonson, Jacquelyn N. Zera, Gregory S. Farnell

2026 Faculty Bibliography

College students often maintain poor dietary habits, notably low fruit and vegetable intake. Commonbarriers include limited time, cost, and lack of nutritional knowledge. This study examined dietary behaviors, barriers, and factors influencing Healthy Eating Scores (HES) amongcollege students. Participants (N = 224; age = 20.3 ± 2.5 years, BMI = 23.9 ± 4.1 kg/m2, 78.9% female, and 91.3% white) completed an online survey. Results indicate meat overconsumption with underconsumption of water, fruits, and vegetables. Limited time and healthy options were the primary perceived barriers. Tests of between-subject effects identified gender (F = 4.38, p = 0.04) and living situation (F …

The Effect Of Sleep Environment On Sleep Quality And Behavior In Firefighters: A Cross-Sectional Study, Jacquelyn N. Zera, Erica Esper, Anna Peluso Simonson, Ashley N. Clausen, Serena Paterno

2026 Faculty Bibliography

Firefighters face high-stress occupational demands and irregular shift work that negatively impact sleep quality, which is intrinsically linked to long-term physical and psychological health. This cross-sectional study examines how the physical sleep environment (home vs. work) and station sleeping arrangements (bunk-style vs. individual dorm-style quarters) influence subjective sleep quality in this population. Sixty-six career firefighters (Age = 40.89 ± 11.05 years), completed the Pittsburgh Sleep Quality Index (PSQI) to assess their sleep in both home and fire station environments, with data analyzed using Wilcoxon Signed Ranks and Mann–Whitney U tests. The results reveal significant differences (p < 0.001), with sleep duration, efficiency, subjective quality, and global PSQI scores all performing significantly better at home than at work. Notably, no significant differences were found between bunk-style and dorm-style sleeping quarters at the station. These findings suggest that firefighters experience poorer sleep while on duty regardless of room design, indicating that operational stressors like call volume and nocturnal arousal may be more influential on sleep quality than the physical arrangement of sleeping quarters, and could inform organizational policies and wellness programs aimed at reducing occupational fatigue.

A Field Test Of The Role Of Biofluorescence In Territorial Salamanders, Kasey Watterson, Cari-Ann M. Hickerson, Carl Anthony

2026 Faculty Bibliography

Biofluorescence is recognized as an important form of visual communication, yet its function remains largely untested in many terrestrial species. In Eastern Red-Backed Salamanders (Plethodon cinereus), fluorescence of the postcloacal gland is a sexually dimorphic trait most strongly expressed in males. Because fluorescence can be displayed during territorial contests, we hypothesized that fluorescence in male P. cinereus would be positively related to resource holding potential (RHP) of territorial residents in the field. To test this hypothesis, we examined the relationship between fluorescence and two separate variables: body condition (as a proxy for RHP) and territory quality (the expected payoff from …

The Red Hands Of Ulster, Philip Metres

2026 Faculty Bibliography

No abstract provided.

Interfaith Transposed: Interfaithlessness In The Age Of Religious Exit, Kristen Tobey

2026 Faculty Bibliography

This article examines so-called interfaithless initiatives in the United States, in which exes from different high-demand religious groups participate together as they navigate the difficult process of religious exit. Sustained attention is focused on an Interfaithless Beach Party held regularly between 2014 and 2022. I argue that associating interfaithlessness with interfaith becomes legible by thinking of interfaithlessness not as peripheral to but rather as a transposition of interfaith. Indeed, these are examples of interfaith encounter at its best, showing not just proximity between exes from different religions, but meaningful interreligious exchange that complicates assumptions about the growing nonreligious population in …

Exploratory Data Analysis On Stress In America: The Impact Of Health, Age, And Employment, Liv E. Bookhammer, Olivia Turkal, Rebecca Fang

2026 Faculty Bibliography

Over the past few decades, stress levels in America have increased significantly. This study explores the relationship between stress and key demographic and health-related variables using the 2018 Stress in America survey data. The research aims to examine how age, employment status, physical health, mental health, and mental health treatment influence average stress levels in the U.S. Previous studies have highlighted that younger adults, particularly those aged 18-34, experience higher levels of stress, while individuals with employment tend to report greater stress than those without. Furthermore, stress is known to be linked to physical and mental health, with severe stress …

Ben-Porath Dd, Mekhel V, Mekhel R, Ghanem M, Akouri C, Yost Jh. A Cross-Temporal Comparison Of Depression Stigma Among College Students: Gen X Versus Gen Z. J Am Coll Health. 2026, Denise Ben-Porath, Veronica Mekhel, Rebecca Mekhel, Mohammed Ghanem, Celine Akouri, John H. Yost

2026 Faculty Bibliography

Objective: The purpose of this study was to determine whether undergraduate students today (i.e., Gen Z; born: 1997–2012), exhibited the same level of mental health related stigma when compared with college students, studied approximately two decades ago (i.e., Gen X [born 1965–1980]).

Participants: 379 undergraduate students from a private midwestern university participated in the experiment.

Method: Participants were randomly assigned to read one of four vignettes about a fictitious student, “Tom” who either (a) was depressed and sought treatment, (b) was depressed and did not seek treatment, (c) suffered a back injury and sought treatment, or (d) suffered a back …

Comprehensive Psychometric Evaluation Of The Child/Adult And Family Quality Of Life Scale : Third Edition, Thomas Frazier, Nissa Van Etten, Richard M. Kubina Jr, Ben Knaebel, Allison Frazier, Yagnesh Vadgama, Lacey Chetcuti, Mirko Uljarevic

2026 Faculty Bibliography

Purpose Quality of life (QoL) has become a key concept for understanding the impact of neurodevelopmental conditions and for monitoring intervention progress. Existing QoL measures often focus on health-related QoL in neurotypical populations or were developed specifically for autism. The CFQL was designed to bridge this gap. The present study describes evaluation of the second revision of the CFQL - the CFQL-3/AFQL-3.

Methods Psychometric evaluation was conducted in two samples: a large validation sample and a clinical intervention sample.

Results Results indicated a clear factor structure, measurement invariance across demographic and clinical factors, good scale and conditional reliability, adequate or …

Fundamentals Of Speech, Steelman Library, David Yates

Syllabus Repository

No abstract provided.

Analytical Study Of Transient Mixed Convective Radiative Jeffrey Fluid Flow With Diffusion–Thermo And Chemical Reaction, V. Sathiya, R. Vijayaragavan, B. Rushi Kumar

Mansoura Engineering Journal

This research examines the behavior of unsteady mixed convective radiative Jeffrey fluid flow over a permeable moving plate with a diffusion thermo effect. The study incorporates multiple factors, including aligned magnetic fields, heat generation, radiation, and chemical reactions. The behavior of Jeffrey fluid under these combined conditions is particularly relevant to the design of efficient heat exchangers, MHD generators, and cooling systems for electronic components. A regular perturbation technique was employed to solve the governing equations, yielding distributions for velocity, temperature, and species concentration. These solutions enabled the derivation of expressions for skin friction, Nusselt number, and Sherwood number. Through …

The Effect Of Second-Order Slip In Hydromagnetic Eyring-Powell Flow: A Bvp4c Study, Ch. Maheswari, B. Naga Lakshmi, G. Dharmaiah, R. Mohana Ramana, B. Reddappa

Mansoura Engineering Journal

The steady-state Eyring–Powell boundary layer fluid flow past a moving surface is examined, considering various parameter implications. These include the wall mass transfer parameter (0.5  C   2.0), the magnetic field parameter (5  Mn 20), the velocity ratio parameter (0.1  λ1  0.7), Eyring-Powell fluid parameters (0.5 K 2 & 0.1 E 0.4), as well as the first-order velocity slip (0.1 γ 1.1) and second-order velocity slip (0.1 δ  0.4). By employing appropriate similarity transformations, the PDEs are reduced to a set of non-linear ODEs, which are subsequently solved using the bvp4c numerical technique and, an implication of key factors on shear …

Hall Current And Nth Order Chemical Reaction Effects On Unsteady 3d Mhd Williamson Nanofluid Flow With Thermophoresis And Brownian Motion Over An Inclined Stretching Sheet, Polavarapu Sudheer, Ramachandra Reddy Vaddemani, Raghunath Kodi

Mansoura Engineering Journal

This study examines the influence of Hall current and nth-order chemical reaction on unsteady three-dimensional magnetohydrodynamic (MHD) Williamson nanofluid flow over an inclined stretching sheet. The model incorporates thermal radiation, heat source, Brownian motion, and thermophoresis effects. The governing nonlinear partial differential equations are transformed into a system of ordinary differential equations using similarity transformations and solved numerically using the shooting method with a fourth-order Runge–Kutta scheme. The results indicate that an increase in the magnetic parameter significantly reduces velocity profiles while enhancing temperature and concentration distributions. The Hall parameter reduces surface drag and improves heat transfer, while decreasing mass …

Preserving The Identity Of Historic Coptic Orthodox Monasteries In Egypt Under Contemporary Pressures: Case Studies Of St. Bishoy And St. Anthony Monasteries, George Medhat Adeeb, Mohamed Khairy Amin, Mohamed Ahmed Al-Sherbiny

Mansoura Engineering Journal

Historic Coptic Orthodox monasteries in Egypt (HCOMEs) represent an important component of Christian heritage, integrating architectural value with enduring spiritual traditions that reflect both tangible and intangible dimensions. However, contemporary development and changing functional demands are generating transformations that may affect their identity if not carefully managed. Despite extensive scholarship, limited research has systematically examined these transformations through a structured evaluative approach. This study addresses this gap by developing and applying an analytical and evaluation framework to examine how contemporary pressures influence the historical, architectural-spatial, and spiritual identity of HCOMEs, and to assess the effectiveness of monastic responses. The framework …

The Multiwalled Carbon Nanotube-Incorporated Cfrp Laminates Interlaminar Fracture Toughness, Nikhil Janardan Rathod, Markala Karthik, Harshvardhan P. Ghongade, Javed Sikandar Shaikh, Rahul Soma Deshmukh

Mansoura Engineering Journal

The structural integrity of carbon fibre reinforced polymers (CFRPs) suffers from damage caused by interlaminar cracking and delamination which diminishes their performance capabilities. This study provides an experimental analysis of the impact of carboxyl-functionalized multi-walled carbon nanotubes (MWCNTs) on the Mode I interlaminar fracture toughness of CFRP laminates. The researchers created composite specimens by using epoxy systems which included MWCNT loadings of 0.1 wt% 0.2 wt% and 0.3 wt% together with an unmodified control. The researchers conducted Double Cantilever Beam (DCB) testing according to ASTM standards to ascertain the rate of critical strain energy release (G_IC) of the material. The …

1-D And 2-D Hadamard Transformations For Protein Sequence Analysis, Esraa A. Ahmed, Abed M. Nasr, Marwa A. Abd Elwahaab

Mansoura Engineering Journal

Similarity/dissimilarity studies follow alignment-based or alignment-free methods. Many alignment-free methods involve selecting physicochemical properties. Most previous articles don’t explain their criteria for choosing the properties used. These heuristic approaches have, by definition, undeterministic and unreliable performance. Hence, there is a need for a powerful proxy for similarity/dissimilarity by a deterministic, reliable approach.

In this study, a physicochemical property is selected by a multi-criteria sequential selection process. The amino acids composing any protein sequence are replaced with their values of the chosen property to produce a discrete signal in the time domain.  The one-dimensional discrete Hadamard transforms our signal from the …

Recycling Of Plastic Into Fibers Using A Novel Machine Design And Analysis Of Fiber Characteristics, Mahmoud Khamees, Nasser Ayoub, Sabreen Addullah Abdelwahab, M. M. Maghawry

Mansoura Engineering Journal

This study presents a modified extrusion-based recycling system with an improved nozzle design and controlled fiber production capability. The machine was conceptualized and fabricated to efficiently process waste plastic and extrude it into fibers of varying diameters. The study focuses on evaluating how fiber diameter influences critical material properties. Microstructural analysis by scanning electron microscopy (SEM) was conducted to investigate the morphology and fiber diameters, while tensile testing provided insights into mechanical performance, including strength and elongation. Moisture absorption tests were also performed to assess durability and environmental resistance. The results demonstrate clear correlations between fiber diameter and the examined …

Effectiveness Of Talcum Powder In Reducing Swelling Potential And Enhancing Strength Of Expansive Soil, Hesham E. Eleraky, Ashraf K. Nazir, Wasiem R. Azzam, Mohamed A. Sakr

Mansoura Engineering Journal

Expansive soils are clayey soils that undergo large volume changes as a result of moisture content variations. These soils have the potential to make foundations and other structures unstable and require costly repairs. This study examined the impact of adding talcum powder as a new stabilizing component to the matrix of an expansive soil in order to enhance the swelling pressure, Atterberg limits, modified Proctor, unconfined compressive strength at different periods of curing, X-ray diffraction and scanning electron microscopy were all used in a series of laboratory tests to examine how adding talcum powder to expansive soil affected the soil's …

A Comparative Review Of Roller Compacted And Conventional Concrete: Performance, Economics, And Environmental Sustainability, Masood Abu-Bakr, Hersh F Mahmood, Soran Abdrahman Ahmad

Mansoura Engineering Journal

Roller Compacted Concrete (RCC), distinguished by its zero-slump consistency and high density achieved through heavy roller compaction, has gained recognition as an effective alternative to conventional concrete in applications such as pavements, industrial flooring, and dam construction. This paper reviews the evolution, material composition, and common uses of RCC in comparison with Conventional Concrete (CC), emphasizing the advantages and limitations of each. Key performance aspects, including mechanical strength, durability, workability, construction efficiency, and maintenance demands, are examined. The findings indicate that RCC can reduce construction time by up to 25% and lower maintenance costs by approximately 30–40%. Additionally, life-cycle cost …

Design, Optimization, And Techno-Economic Analysis Of A Standalone Pv-Wind-Battery Microgrid For A Remote Load In Kurdistan Region Of Iraq, Harwan Mohammed Taha, Laith Akram Mohammed

Mansoura Engineering Journal

Standalone microgrids play a crucial role in rural areas where grid electricity delivery is difficult and expensive. This research verifies the effectiveness of a standalone microgrid in a rugged area, Pers Mountain in Akre district, Duhok governorate, Iraqi Kurdistan. A first hybrid renewable energy system (HRES)-based standalone microgrid is presented to supply a remote load. Solar and wind energy are employed for their reliability, sustainability, and abundance, with battery storage ensuring continuous power when solar and wind are unavailable. Simulation results demonstrate reliable power supply during summer months (loss of power supply probability < 5%), with the system operating across three modes — PV-dominant daytime, combined wind-battery evening, and battery-discharge nighttime. The inverter achieved minimum total harmonic distortion of 1.53% for both current and voltage outputs, below the IEEE 519 limit. A full-year hourly particle swarm optimization (PSO) sizing analysis assessed annual reliability and each source's economic contribution: the original fixed sizing yields an annual loss of power supply probability (LPSP) of 26.80% (expected energy not served ~1,471 kWh/year), motivating a PSO-optimized PV-battery configuration achieving annual LPSP of 5% (~274 kWh/year unserved) at comparable cost. The site's wind resource is reasonable (13.8% capacity factor), but the fixed tower and controller cost outweighs its contribution at this small scale. The proposed HRES totals $11,960–$16,317 depending on configuration, approximately 28–38 times lower than grid extension ($455,600) to the site, while producing zero CO₂ emissions and avoiding approximately 4,189 kg/year versus an equivalent HOMER Pro-simulated diesel generator.

Secondhand Books Industry Between Extinction And Challenges Of The New Millennium: Insights Urban And Architectural Considerations From Al-Azbakeya Book Market., Ahmed M. Selim, Heba M. Gaber, Nehal M. Elmahdy

Mansoura Engineering Journal

At the beginning of the 21st century, the printed and secondhand book industry has faced enormous challenges, particularly after the COVID-19 pandemic, when book consumers sought to engage directly with e-books. The Azbakeya Book Market in Egypt is one of the markets that confronts this challenge, while maintaining its distinctive historical character. This study aims to rehabilitate the secondhand book market in Al-Azbakeya district as a model that simulates the potential urban and sustainable architectural design strategies for reviving this industry. The study framework was comprised into four sections. First, "desk-based research" was conducted to discuss the secondhand book industry …

Framing Inclusive Heritage Urbanism Reconfiguring Publicness In Mosque-Centered Precincts In Historic Cairo, Ghada Sayed Ghazala

Mansoura Engineering Journal

Mosque-centered precincts in historical cities face a continuous tension between touristic-led redevelopments, security management policies and urban life of commons. Recently in Historic Cairo state-led interventions occur in major mosque-centered settings with upgrading intent by enhancing visual order, crowd control and visitors’ experience, yet socio-spatial inclusivity stayed insufficiently incorporated in those implications. This study discourses this gap by initiating the Heritage Socio-spatial Inclusivity Framework (HSIF) to assess inclusivity across major mosque-centered realms – AL-Hussein Mosque & Al-Sayida Zeinab Mosque precincts -

HSIF synthesized urban design & heritage conservation concepts through indicators covering aspects like communal livability, users experience, governance & …

Advancing Ultrahigh Carbon Steel Characterization: A Metaheuristic-Tuned Deep Learning Approach, Walaa Omar El-Farouk Badr, Hossam El-Din Mostafa, Rania Elbana

Mansoura Engineering Journal

Accurate classification of ultrahigh carbon steel (UHCS) microstructures is essential for elucidating processing-structure-property relationships and enhancing material performance. While convolutional neural networks (CNNs) offer powerful automated classification, navigating their complex, high-dimensional hyperparameter spaces present a significant computational bottleneck. To advance automated materials characterization, this study proposes a metaheuristic-tuned deep learning approach for robust and efficient microstructure classification. Two architectures, VGG16 and MobileNetV2, were evaluated under both pretrained and fine-tuned configurations, with Particle Swarm Optimization (PSO), Genetic Algorithm (GA), and Ant Colony Optimization (ACO) applied for systematic hyperparameter tuning. Results show that GA substantially improves the performance of fine-tuned VGG16, achieving …

Evaluating The Effectiveness Of Hard Coastal Protection Structures For Long-Term Erosion Mitigation, Case Study: Eastern Rosetta Shoreline, Nile Delta, Egypt, Basma Sayed, Ayman Sabry Koraim, Tarek Hemdan Nassrallah, Ahmed Abouelfetouh Abdelaziz, Nada Mansour, Fahmy Salah Fahmy Abdelhaleem

Mansoura Engineering Journal

Coastal erosion threatens densely populated shorelines worldwide. At the Rosetta Promontory (Nile Delta), shoreline retreat has accelerated since the construction of the Aswan High Dam due to reduced fluvial sediment supply. This case study numerically evaluates shoreline response to six hard-protection scenarios along the eastern promontory, combining groins and detached breakwaters, over a 20-year forecast (2022–2042). Offshore wave conditions were transformed to nearshore hydrodynamics using MIKE21 Spectral Wave, and long-term shoreline evolution was simulated with DHI-LITPACK. The numerical models were forced using a 40-year wave dataset derived from the ECMWF ERA5 reanalysis. Results indicate that the configuration with eight detached …

Principles Of Geographic Information Science (Gep 205 And Gep 505), Fall 2026 Syllabus, Shokran Rahiminezhad

Open Educational Resources

This syllabus is for Principles of Geographic Information Science (GEP 205 and GEP 505) at Lehman College. The course introduces geographic information science, spatial data management, cartography, coordinate systems and projections, tabular and spatial queries, vector and raster analysis, geoprocessing, and introductory geospatial programming using ArcGIS Pro. Students complete laboratory activities and a semester-long project addressing a real-world geographic problem. The syllabus includes differentiated expectations for undergraduate and graduate students and incorporates open and freely available instructional materials.

The Global Onboard Training Programme (Gobt) : A Comprehensive Review, World Maritime University

Reports

A stable supply of qualified seafarers is a critical component of the global maritime logistics industry, which relies heavily on maritime transportation. According to the 2021 BIMCO Manpower Report, an additional 89,510 officers will be needed by 2026. In 2021 alone, there was already a deficit of 26,240 STCW-certified officers, clearly indicating that demand continues to outpace supply. The report also noted a 45.8% increase in the number of female seafarers since 2015, although they still represent only a small share of the overall workforce. Maritime Education and Training (MET) institutions around the world continue to provide training to develop …

From Classroom To Career: Use Of Digital Collaboration Tools To Bridge Theory & Practice, Della Clark, Kristina Kaufman, Sphurti Sewak, Peter Kaufman, Rick Valentin, Hulda Black

Faculty Publications – Marketing

Teamwork and project management skills, from in-person to remote interactions, remain central to marketing graduates’ career readiness, yet students often complete team projects with limited guidance on how to organize work, especially in hybrid and technology‑mediated environments. This study explores a pilot of integrating Miro, a widely used digital collaboration whiteboard, into classroom student projects. A pre- and post-survey design was implemented across two undergraduate marketing courses at a large Midwestern U.S. university to explore if Miro can improve students’ team‑project experience and perceived preparedness for working with emerging technologies. Students completed a questionnaire at the beginning of the semester …

Herbivore Offense In Plant–Herbivore Coevolution, Xosé López-Goldar

Faculty Publications – Biological Sciences

Coevolution between plants and herbivores has been proposed as a major evolutionary force that resulted in their radiation and diversification. Plants have evolved a broad array of strategies that directly or indirectly avoid, repel, deter, or kill herbivore attackers. These include (but not limited to) tolerance to damage through compensatory growth of tissue lost from herbivory, resistance via physical and chemical defenses, induced responses, and avoidance through reduced apparency or phenological mismatch. In response, herbivores have evolved adaptations to circumvent, resist, detoxify, and even use plant defenses for their own benefit (e.g. sequestration). These include anatomical, physiological, and behavioral adaptations, …

Conceptualizing The Receipt Of Unfair School Discipline Through A Betrayal Trauma Lens, Charles Bell, Alexia Angton, Sarah Franklin, Michayla Mack, Pavel Ahmed

Faculty Publications - Criminal Justice Sciences

We contribute to the literature on school discipline by investigating why some Black students, parents, and advocates perceived particular punishments as unfair. Using Betrayal Trauma Theory (BTT) as a framework, we conducted qualitative interviews with twelve Black parents and five community activists who assisted Black children throughout the school discipline process and perceived such punishments as unfair. We also interviewed four Black children who received punishments at school that they perceived as unfair. Participants reported that instances of unfair school punishment created barriers to graduation, criminalized Black students, and permitted victimization to occur on school grounds.