Digital Commons Network^™

A Simplified Computational Fluid Dynamics Investigation Of Internal Duct As A Passive Aerodynamic Solution For Electric Trucks, Omar K. Omar, Ahmad Abu Shanab, Mohammad Tarawneh, Sara Hawarneh, Dr Hani Alkhatib

Research Outputs: 2025-Present

Aerodynamic drag is a dominant factor affecting the efficiency and driving range of electric trucks, especially at high speeds. Although previous studies have mainly focused on external drag-reduction devices, internal airflow control strategies such as integrated ducts have received limited attention. This study addresses that gap by analyzing how placing an internal duct in the truck body affects drag and power efficiency. A simplified two-dimensional computational fluid dynamics (CFD) approach was employed using ANSYS Fluent to evaluate and compare a baseline truck model and a modified configuration featuring a central internal duct. The simulations assessed the drag coefficient, drag force, …

Environmental Risk Modeling For Heavy Rainfall Events In Jeddah City Between The Years (2000-2025), Amina Atallah Al-Rehaili

University of Tabuk Journal for Humanities and Social Sciences

This study models the potential environmental risks associated with heavy rainfall events that affected Jeddah, Saudi Arabia, between 2000 and 2025. A descriptive-analytical approach based on Geographic Information Systems (GIS) was employed to analyze spatial patterns of rainfall and assess their environmental implications. The methodology included a literature review, collection of daily rainfall data, identification of extreme rainfall events, and spatial analysis of rainfall distribution across the city. A suitability model was then developed to determine areas most vulnerable to heavy rainfall hazards. Results indicate that heavy rainfall events and their environmental impacts on residents and property correspond to 70.37% …

The Effectiveness Of A Program Based On The Use Of Concept Maps In Improving Descriptive Text Among Female Students With Learning Disabilities, Bedour Ahmed Bahamam

University of Tabuk Journal for Humanities and Social Sciences

This study aimed to investigate the effectiveness of a program based on the use of concept maps in improving descriptive text writing among middle school female students with learning disabilities. The study employed a quasi-experimental methodology using a single-group pre-test and post-test design. The research instruments included a training program and descriptive writing tasks. The study sample consisted of 21 middle school female students with learning disabilities in Riyadh. The results revealed statistically significant differences between the pre-test and post-test in the number of words produced in the descriptive texts, with the post-test showing superior performance. Additionally, statistically significant differences …

The Reality Of Science Teachers' Possession Of Tpack Model Competencies In Intermediate Schools In Bisha Governorate From Their Perspective, Khaled Saleh Alrawili

University of Tabuk Journal for Humanities and Social Sciences

The study aimed to explore the reality of Science Teachers' Possession of TPACK model Competencies in Intermediate Schools in Bisha Governorate from their Perspective, and its relationship to certain variables (academic qualifications - years of experience). The study used a descriptive survey approach by applying a questionnaire consisting, in its final form, of 30 items distributed across four main axes representing the basic components of the TPACK model. The sample consisted of (85) Science teachers in the Bisha Governorate. The study reached a set of results, including: The third axis, "Pedagogical Knowledge" (PK), came in first place in terms of …

Level Of Cognitive Load Among Students With Learning Disabilities In The Middle Stage In Riyadh Region, Khalid Munahi Hudaib Alqahtani

University of Tabuk Journal for Humanities and Social Sciences

The study aimed to investigate the level of cognitive load among middle school students with learning disabilities in Riyadh and to identify differences in cognitive load levels according to gender (male-female) and grade level (first, second, third). The study adopted a descriptive approach and was conducted on a sample of (80) students with learning disabilities, whose ages ranged from 14 to 16 years. To achieve the study objectives, a Cognitive Load Scale consisting of (30) items distributed across three dimensions was developed: intrinsic load, extraneous load, and germane load. The results revealed that the overall level of cognitive load among …

The Extent Of Acquiring Scientific Concepts In Science Curricula In The Primary Stage For Hearing, Deaf, And Hard-Of-Hearing Students: Evaluating Achievement, Teaching Practices, Challenges, And Improvement Mechanisms, Rashdan Bin Humeed Bin Masoud Al-Mutarrfi

University of Tabuk Journal for Humanities and Social Sciences

This study aimed to investigate the level of acquisition of scientific concepts among hearing, deaf, and hard-of-hearing students in the fifth and sixth grades, and to identify the teaching practices used by science teachers when teaching scientific concepts to these students. Additionally, the study sought to uncover the challenges faced by science teachers in teaching scientific concepts to hearing, deaf, and hard-of-hearing students and to propose mechanisms to help science teachers in primary education increase the acquisition of scientific concepts among these students. The study sample consisted of 136 male and female students and 137 male and female teachers. The …

Consumer Rights In E-Commerce Contracts Under The Saudi Legal System: Reality And Challenges, Saeed Abdullah Badawi Al-Zahrani

University of Tabuk Journal for Humanities and Social Sciences

E-commerce is rapidly evolving in the Kingdom of Saudi Arabia, which necessitates the intervention of the Saudi legislator to provide greater protection for consumers who face various challenges in e-commerce contracts. The central research problem lies in identifying the challenges facing consumer rights in e-commerce contracts under the Saudi legal system and exploring ways to enhance consumer protection in this field - a question this study seeks to answer. This study aims to clarify the concept of e-commerce and the notion of consumer rights in e-commerce, while also highlighting the most significant challenges consumers face in such contracts. Moreover, it …

Digital Aesthetics And Post-Internet Art: Transformations Of The Saudi Art Scene Between Global Discourse And Local Narrative, Lina M. Kattan

University of Tabuk Journal for Humanities and Social Sciences

This research investigates the evolution of artistic practices in Saudi Arabia, focusing on the impact of digital infrastructures and "post-Internet" aesthetics. Addressing the challenges within the Kingdom's 2030 Vision for cultural transformation, the study examines how digital technologies are reshaping art production and exhibition. The core problem lies in understanding Saudi artists' engagement with the global digital landscape while preserving their connection to Arab and Islamic cultural traditions. The research clarifies the dynamic interplay between global digital art discourse and local storytelling, exploring how artists utilize new technologies and addressing challenges like digital archiving, virtual exhibition sustainability, and technological access …

The Effectiveness Of Training On The Use Of Project-Based Learning Methods In Developing The Teaching Skills Of Middle School Science Teachers, Essa Dakheel Alrehaly

University of Tabuk Journal for Humanities and Social Sciences

The current research aimed to measure the effectiveness of training on using project-based learning methods in developing teaching skills among intermediate science teachers. To verify the research hypotheses, a cognitive test and an observation card were used. The experimental treatment materials included the training program in light of project-based learning methods to develop teaching skills among intermediate science teachers. The current research used the experimental method with a quasi-experimental design based on a single-group design with a pre-post application to determine the effect of an independent variable on a dependent variable. The research sample consisted of an experimental group of …

The Factorial Structure Of The Positive Thinking Scale Among Graduate Students (A Case Study Of Tabuk University), Mohammed Abdullah Asiri, Hissah Suliman Albalawi

University of Tabuk Journal for Humanities and Social Sciences

The aim of the research was to identify the factorial structure of the Positive Thinking Scale among graduate students, using confirmatory factor analysis, the level of positive thinking among graduate students, and the differences in the dimensions of positive thinking among graduate students, according to two variables: (gender and specialization). To achieve the research objectives, a descriptive analytical approach was used, and a scale was designed consisting of 36 items distributed across five dimensions (optimism and positive expectation, self-discipline and control of higher-level mental processes, mindfulness, critical thinking, and unconditional self-acceptance). The scale was applied to a stratified random sample …

Presupposition In Shaqraa Al-Madkhali's "I Almost See Me": A Pragmatic Study, Hadiah Faiz Monawer Alrashidy

University of Tabuk Journal for Humanities and Social Sciences

This research investigates the presuppositions inherent in the poetic collection (Diwan) titled "Akadu Arani" (I Almost See Myself) by the poetess, Shaqra al-Madkhali. The study aims to categorize these presuppositions and analyze their functional role in articulating the poetess's intentionality, ultimately facilitating the efficacy of the communicative process. Methodologically, the paper adopts a pragmatic framework complemented by a descriptive-analytical approach. The study is organized into an introduction, a theoretical preamble on the concept of presupposition, and five core analytical sections: (1) Existential, (2) Factive, (3) Lexical, (4) Structural, and (5) Non-factive presupposition. The investigation concludes with several key findings, most …

The Level Of Faculty Members' Awareness At The University Of Tabuk Of The Importance Of Using Artificial Intelligence Applications In Teaching According To Selected Demographic Variables, Mufleh Bin Qublan Bin Bajad Al Judea

University of Tabuk Journal for Humanities and Social Sciences

The present study investigates the level of awareness among faculty members at the University of Tabuk regarding the importance of employing artificial intelligence (AI) applications in teaching. To achieve this aim, the study examines the influence of several demographic and professional variables, including academic rank, gender, years of teaching experience, and the level of training in artificial intelligence. A descriptive-analytical approach was adopted, and data were collected through a questionnaire administered to a sample of faculty members in the College of Education. The results revealed no statistically significant differences in awareness levels attributable to academic rank, gender, or teaching experience. …

Evaluating The Quality Of Learning Disabilities Programs In Saudi Arabia From Teachers' Perspectives: Qualitative Study, Ahmed Lowiheg Aldousari

University of Tabuk Journal for Humanities and Social Sciences

This study investigates the quality of learning disabilities (LD) programs in the Kingdom of Saudi Arabia (KSA) from the perspectives of teachers directly involved in their implementation. The study adopts a qualitative research design, utilizing semi-structured interviews conducted with ten teachers of learning disabilities, including five male and five female teachers. The aim of the study is to explore teachers' perceptions of the effectiveness of current LD programs, identify key challenges encountered in practice, and highlight areas for improvement. The findings reveal that while teachers demonstrate strong commitment and positive attitudes toward supporting students with learning disabilities, several challenges persist, …

Beyond Hereditary Xerocytosis: Chronic Hemolysis Due To A Non‑Classic Piezo1 Variant With Sickle Cell Trait As A Potential Modifier, Daniel Üblagger Md, Emily Jacobson, Beamon Agarwal Md, Phd, Jacob Troutman Do

Fellows and Residents

No abstract provided.

Developing A Portable Ultrasound Quick Guide To Enhance Point-Of-Care Training In Primary Care, Gurpreet Bharaj Md, Solomon Saul Do

Fellows and Residents

No abstract provided.

The Kidney Connection: Sepsis In Hospitalized Lupus, Muhammad Usman Zafar Md, Syeda Haris Mustafa Zaidi Md, Ansar Aziz Md, Sejal Lakhani Do, Courtney Hill Do

Fellows and Residents

No abstract provided.

Are Iowa Pk-12 Schools Prepared For A School Shooting? A Needs Assessment Of Iowa Superintendents, Kurt Mj Devore

Dissertations and Theses @ UNI

As school shootings remain a persistent threat to PK-12 education, this quantitative survey study examines the preparedness levels and beliefs of 75 out of 277 Iowa superintendents regarding active shooter events. In the wake of the 2024 tragedy in Perry, Iowa, results indicate a near-universal recognition of risk (97.3%), prompting a shift toward "muscle memory" training and the adoption of the Standard Response Protocol (SRP) to ensure a common language during a crisis. The data reveals a significant move away from high-intensity simulations in favor of trauma-informed tabletop exercises, alongside a definitive rejection of arming educators (0%) due to insurance …

An Exploratory Study In Sports Geography: The Interaction With The Environment And Sense Of Place In Endurance Running Events, Jackson Steffener

Dissertations and Theses @ UNI

This study examines how endurance running shapes runners' sense of place through interactions with physical environments, social dynamics, and embodied experience. With sports geography, it explores how participants form emotional and spatial connections to race settings while moving through varied landscapes under physical strain. A phenomenological multi-site case study design was used, focusing on four endurance events in Iowa that differed in terrain, setting, and structure.

Data were collected from 46 participants using mental mapping and semi structured field notes. Mental maps identified meaningful locations along race courses, while field notes captured emotional responses, environmental conditions, and social interactions. Thematic …

Rockingham County Advisory Council 2026 Meeting Minutes, Extension

Advisory Council

No abstract provided.

Strafford County Extension - Advisory Council Meeting Minutes 2026, Rebecca Hull

Advisory Council

No abstract provided.

Acute Correction Of Acquired Genu Valgum Secondary To Post-Traumatic Growth Arrest At The Time Of Distal Femur Fracture., Josiah Wolf, Nicholas Pelz, Adam Mansour, Christopher Iobst, Allen Kadado

Surgery Articles

A 14-year-old male patient sustained a distal femur fracture after a ground-level fall. His history was notable for severe acquired genu valgum secondary to a childhood lawnmower accident, which had required multiple limb salvage procedures including a Syme amputation and soft-tissue skin grafting. Acute correction of the limb deformity was performed concurrently with fracture fixation using a retrograde intramedullary nail and poller blocking screws. Retrograde intramedullary nailing represents a viable treatment option for simultaneous acute correction of acquired genu valgum and stabilization of distal femur fractures.

Serum Protein Signatures For Breast Cancer Detection In Treatment-Naïve African American Women Using Integrated Proteomics And Pattern Analysis, Padma Tadi Uppala, Elmer Rivera, Hyun J. Kwon, Sharon S. Lum

Faculty Publications

Breast cancer is the leading cause of cancer-related mortality in African American (AA) women. In this study we evaluated the serum proteomic profile of AA women with breast cancer using an integrated proteomic framework with multivariate pattern analysis. Using 2D-DIGE, thousands of serum protein spots were detected across 33 gels; 46 spots met criteria for presence, statistical significance, and differential expression. Proteins from the spots were identified by MALDI-TOF/TOF and matched in curated databases, highlighting serum biomarkers including ceruloplasmin, alpha-2-macroglobulin, complement component C3 and C6, alpha-1-antitrypsin, alpha-1B-glycoprotein, alpha-2-HS-glycoprotein and haptoglobin-related protein. LC-MS/MS analysis revealed 163 differentiating peptides after imputing and …

Faculty Fellowships: River Dolphins In Bangladesh., Daniel Gonzalez-Socoloske

Faculty Publications

No abstract provided.

Effects Of Density Turbulence On Helicon Wave Propagation In The Core Plasmas, Eun-Hwa Kim, Syun'ichi Shiraiwa, Seung-Hoe Ku, A. Bortolon, Masayuki Ono, Nicola Bertelli, Robert I. Pinsker

Faculty Publications

No abstract provided.

Timothy M. Mulvaney, Timothy M. Mulvaney

Faculty CVs

No abstract provided.

Approximate Decryption In Homomorphic Division And Privacy Impact, Ameerah Alsulami, Marius Silaghi

Electrical Engineering and Computer Science Faculty Publications

The result of a computation over secret inputs inherently reveals some information about those inputs; such semantic leakage is unavoidable. The challenge is to ensure that the computation method does not introduce additional, avoidable disclosure beyond what is implied by the output itself. This issue is particularly critical in privacy-preserving machine learning and cloud-based data processing, where homomorphic encryption enables computation over encrypted data but often relies on practical approximations. Division-enabled homomorphic encryption schemes based on rational encodings preserve arithmetic correctness, but their decrypted outputs may retain sufficient algebraic structure to enable inference of the original operands, creating representation-induced leakage. …

A Systematic Review Of Artificial Intelligence For Software Requirements In Open-Source Software, Amal Alharbi, Khaled Slhoub

Electrical Engineering and Computer Science Faculty Publications

Software stakeholders have seamlessly integrated artificial intelligence technologies into the requirements engineering processes for open-source software, which presents both opportunities and challenges. This systematic literature review examines the current state of artificial intelligence application in requirements engineering for open-source software and emphasizes the opportunities and challenges faced by practitioners. Based on the reviewed literature, artificial intelligence technologies, such as machine learning, natural language processing, large language models, and deep learning techniques, have been increasingly applied to support key requirements engineering activities, particularly requirements elicitation, classification, prioritization, and stakeholder analysis. However, the lack of structured data in open-source software directly challenges …

Botox Detection And Face Analytics Using Deep Learning, Audison Beaubrun, Gabriella Pangelinan, Michael King

Electrical Engineering and Computer Science Faculty Publications

Non-surgical cosmetic procedures like Botox are increasingly common, yet their impact on facial analytics systems remains unexplored. We curate a novel dataset of 1,990 before-and-after images from 390 individuals who received cosmetic injectables. Using this dataset, we demonstrate that these subtle facial modifications measurably affect age estimation: FairFace and FaceXFormer show statistically significant shifts toward younger age estimates (-1.43 and-3.27 years, p <0.05), while MiVOLO remains stable. We also show these modifications are detectable: training deep learning models (ResNet-50, DenseNet-121, ConvNeXt-Tiny) to classify cosmetically-altered faces achieves up to 89% accuracy. Our findings reveal that even minor, non-surgical facial changes can bias age-based analytics and are algorithmically detectable-raising critical concerns for privacy, fairness, and robustness as facial analytics expand into high-stakes domains like insurance, hiring, and health assessment. © 2026, Florida Online Journals, University of Florida. All rights reserved.

Collaboration On Waltz Labels Can Achieve Qualitative Stereo Vision, Ben Mathew, Majed Alotaibi, Debasis Mitra, Marius Silaghi

Electrical Engineering and Computer Science Faculty Publications

Stereo vision requires calibration that can be hard to achieve or guarantee, so we propose a Qualitative Stereo Vision approach based on logical reasoning about edges detected from cameras/robots having different points of view. The proposed technique builds upon the qualitative reasoning of Waltz filtering on edges of a 2D image, which is extended to reasoning about edges from multiple images with different points of view. An assumption is that edges and vertexes that appear in different images can be identified based on their features. We find that a consistent spatial interpretation of a scene, classifying occluding, convex, and concave …

Cladding-Engineered Hollow-Core Fiber For Polarization Control And Optical Sensing Applications, M.M. Shoaib Hasan, Md Shah Alam, Md Selim Habib, Md Asiful Islam

Electrical Engineering and Computer Science Faculty Publications

A polarization-selective hollow-core antiresonant fiber (HC-ARF) is proposed and numerically investigated for single-polarization guidance in the telecom band. Finite-element simulations across the 1.50–1.60 μm range show that the optimized design achieves a high polarization extinction ratio of 1.73x 104 at 1.55 μm, with low loss for the y–polarized mode (0.72 dB/km) and strongly suppressed x–polarized loss (12531 dB/km). The fiber also provides a modal birefringence of 0.21x 10-4, enabling strong polarization selectivity and stable single-polarization guidance. These results indicate that the proposed PM-HC-ARF is well-suited for polarization-sensitive applications such as interferometry, sensing, and coherent communication. © 2009-2012 IEEE.