Digital Commons Network^™

Scope Of Utilizing Waste Marble Dust In Concrete: Statistical And Surface Response Approach, Khatib Zada Farhan

Journal of King Abdulaziz University: Engineering Sciences

The sludge produced from marble processing has become a significant environmental hazard in major marble mining and processing countries. Utilizing marble dust (MD) as a partial replacement for cement offers benefits: it reduces the need for landfill disposal, which can lead to air and water pollution, and it decreases the consumption of cement, which contributes to the global carbon footprint. This study examines the key properties of concrete incorporated with MD and develops a composite mix with the optimal MD content using response surface methodology. The influence of MD/Cement ratio, Water/Cementitious material ratio, and parameters indicating important constitutive elements in …

Neutronic Assessment Of Advanced Fuels And Moderators For Enhanced Light Water Reactor (Lwr) Safety And Performance, Abdululmajeed M. Al-Asiri, Mohammed M. Damoom, Khurram Mehboob, Sam H. Al-Lawdhaeai

Journal of King Abdulaziz University: Engineering Sciences

The development of Accident Tolerant Fuels (ATF) is critical for enhancing the safety and economic performance of next-generation nuclear reactors. This study presents a comprehensive, high-fidelity neutronic assessment of five leading fuel candidates: Uranium Dioxide (UO₂), Uranium Carbide (UC), Uranium Nitride (UN), Mixed Oxide (MOX), and Thorium Dioxide (ThO₂) to resolve fundamental trade-offs between intrinsic safety and neutronic efficiency. Utilizing the OpenMC Monte Carlo code, a systematic parametric analysis was performed to quantify key safety and performance parameters, including the effective multiplication factor (K_eff), Fuel Temperature Coefficient (FTC), Moderator Temperature Coefficient (MTC), and Void Reactivity Coefficient …

Comparative Neutronic Analysis Of Advanced Tolerant And Conventional Fuels In The Vver-1200 Reactor Using The Openmc Monte Carlo Code, Sam H. Al-Lawdhaeai, Yahya A. Al-Zahrani, Khurram Mehboob, Daud Mohamad

Journal of King Abdulaziz University: Engineering Sciences

This study performs a comprehensive comparative neutronic analysis of uranium nitride (UN) and uranium monocarbide (UC) as high-density, high-thermal-conductivity, accident-tolerant fuel candidates against conventional uranium dioxide (UO₂) fuel for the VVER-1200 reactor, using OpenMC Monte Carlo simulations with ENDF/B-VIII.1 nuclear data. A detailed model was developed, accounting for varying fuel assembly enrichments and burnable absorber configurations. The analysis encompassed the burnup-induced fission product, including uranium and plutonium actinides and neutron poisons. In addition, the study investigated the reactivity response to key operational parameters such as fuel and moderator temperatures, boron concentration, and void fraction, and evaluated the key …

Meteorological Influence On Site Selection For A Hypothetical Nuclear Power Plant Near Yanbu, Saudi Arabia, Abdulwahab Albesher, Daud Bin Mohamad, Mohammed M. Damoom, Othman A. Fallatah

Journal of King Abdulaziz University: Engineering Sciences

Kingdom of Saudi Arabia (KSA) is known as a heavy reliant oil country particularly for economic and energy sectors. KSA seeks to diversify their economy and energy sources and gradually phase out oil dependance to achieve net zero emission by 2060. Nuclear energy is a reliable energy source that can replace oil. KSA had declared previously on multiple occasions that they wish to enrich their nuclear fuel from their uranium reserve. There are numbered studies regarding suitability of Nuclear Power Plant (NPP) sites in KSA mainly focused on geological and geographic aspects. One of these sites was Yanbu city. The …

Radiation Exposure And Safety Practices In Dental Radiology: A Literature Review, Abdullah Awn Alsubaie, Majdi Rashed Alnowaimi, Nada Othman Bamashmous, Afnan Darwesh, Abdu Mohammed Saeed, Essam Mohammed Banoqitah

Journal of King Abdulaziz University: Engineering Sciences

Background: Although exposure to even low doses of ionizing radiation can cause cell damage and increase the risk of cancer, dental radiography remains an essential tool for making the correct diagnosis and planning treatment. Despite the advancements in dental radiography, significant global variations in the knowledge, attitudes, and practices (KAP) of dental professionals persist, including those practicing in the Middle East and Saudi Arabia. Its continued necessity highlights the importance of continuously and thoroughly evaluating the compliance to safety standards according to international guidelines. Aim: This review aims to ascertain prevailing occupational radiation exposure levels, evaluate the knowledge and awareness, …

A Comparative Study Of Ore Reserve Estimation Methods: Traditional Triangulation Vs. Geovia Surpac & Maptek Vulcan At The Al Khabra Phosphate Deposit, Saudi Arabia, Hussein A. Saleem, Mostafa A-B Ebrahim, Gamal S. Abdelhaffez, Abdul Majeed Al Aenezi

Journal of King Abdulaziz University: Engineering Sciences

Ore reserve estimation drives mining's economic viability. Reserve estimation in mining involves determining the amount of economically extractable minerals in a given deposit. This study, using 63 boreholes, conducts a comparison of triangulation, Geovia Surpac, and Maptek Vulcan for Al Khabra's phosphate reserves, Saudi Arabia. It computes grade, volume, and tonnage, revealing a 2.05% difference in Surpac and 0.68% in Vulcan. Specifically, the traditional triangulation method yielded a reserve of 278.6 million tonnes (Mt) at an average grade of 21.75% P₂O₅. In comparison, Geovia Surpac estimated 284.3 Mt, and Maptek Vulcan estimated 280.5 Mt at a …

Goodness-Of-Fit Test For The Kumaraswamy Distribution Via Energy Distance Approach With Applications To Real Data, Joseph Njuki, Thomas Gilbert

Mathematics and Statistics

In this article, we develop a goodness-of-fit test for the Kumaraswamy distribution based on energy statistics. Due to the availability of its quantile (inverse) function, the Kumaraswamy distribution has been shown to be the preferred alternative to the Beta distribution, since both have bounded support in the (0,1) interval. The proposed test procedure is simple and more powerful against general alternatives. Under different settings, simulations show that the proposed test is capable of being well controlled for any given significance (nominal) levels. In terms of power comparisons, the proposed test outperforms other existing methods in different settings. We then apply …

An Exploration Of Audio-Score Techniques And Practices, Lindsay Vickery

Research outputs 2022 to 2026

This paper discusses the emergence of the Audio Score as a distinct compositional practice in which auditory communication, rather than visual notation, is the primary medium through which compositional information is conveyed to performers. Drawing on recent theoretical writing by Bhagwati, Sdraulig and Lortie, Schimana, and d’Heudières, the study situates Audio Scores within the evolution of technological, aesthetic, and ideological developments. The discussion proposes a framework distinguishing three core roles of auditory material in Audio Scores— orientation, emulation, and instruction—and seeks to clarify the boundaries between Audio Scores and adjacent practices. The analysis foregrounds performer experience as a critical site …

Modification Patents Across Multiple Ndas In Pharmaceutical Protections, Robin C. Feldman, Ramy Alsaffar, Tanziuzzaman Sakib

Faculty Scholarship

Introduction Our study examines modification patents across multiple New Drug Applications (NDAs), employed by pharmaceutical companies to extend patent protections. Ours is the only comprehensive study of modification patents by Active Pharmaceutical Ingredient (API) across multiple NDAs, the approach of current regulatory initiatives, investigating how these patents extend drug protections and impede generic entry.

Methods We examine 1028 modification patents, categorizing them as chemical variations, formulation changes, treatment methods, or device/agent. We tabulated additional granted protection time, correlations with new NDAs, and litigation from potential generics.

Results On average, 5 modification patents protected each drug, extending granted protection periods by …

From Strategic Commitment To Practical Action: A Selection Of Projects To Advance Inclusive Collections, Anne E. Rauh, Winn W. Wasson, Rebecca G. Johnston, Hannah Marosi

Librarian Publications

No abstract provided.

Bartender Rescue: Sex Discrimination, Nepotism, And The Legacy Of Goesaert V. Cleary, Michael E. Solimine, Michelle Brodersen

Penn State Law Review (2003 - Present)

No abstract provided.

Growing Together: Building Communities Of Practice For Mlis Students And Librarian Instructors, Amanda Crego-Emley, Alicia G. Vaandering, Mary Allbee, Lily Hobin, Hannah E. Olson

Public Services Faculty Presentations

Reflective teaching as a community of practice can offer critical support in honing both teacher-librarian identity and classroom management skills.  In this session, we will outline how university librarians and MLIS students collaborated to develop a community of practice around reflective teaching. Attendees will hear firsthand from MLIS students about how participating in this community of practice shaped their development and confidence as emerging instructors. Our practice included pre- and post-semester reflections, structured goal setting, regular reflection on one-shot instruction, and periodic cohort meetings to share how reflection shapes future practice. We aimed to create a non-hierarchical approach to reflection …

``Evaluation Of Molybdenum Content In 99Mo/99mTc Generators Eluate'', Sunnia Shafiq, Hafiz Khush Naseeb Ahmad, Hina Manzoor, Sadiqullah Sadiqullah, Hashir Saeed, Muhammad Sadiq, Shehla Iftikhar

Journal of King Abdulaziz University: Engineering Sciences

Objective This study aimed to assess the reliability and purity of technetium-99m (^99mTc) generators produced by the Pakistan Institute of Nuclear Science and Technology (PINSTECH), known as PAKGEN, by evaluating the molybdenum (⁹⁹Mo) breakthrough levels over five years. Maintaining low ⁹⁹Mo levels is crucial for patient safety and high-quality diagnostic imaging in nuclear medicine. Methods: 189 PAKGEN ^99m Tc generators were tested at the Centre for Nuclear Medicine and Radiotherapy (CENAR) in Quetta, Pakistan, from December 2019 to December 2023. Each generator was eluated daily from Monday to Saturday, and the molybdenum content in the …

The Joy Of Shopping: Thrill Of The Treasure Hunt, Jane Gu, Cristina Nistor, Matthew Selove

Business Faculty Articles and Research

People sometimes enjoy the thrill of the hunt, which implies search can generate joy in addition to costs. Some customers say they enjoy searching for unique items such as vintage T-shirts and luxury handbags, and managers at warehouse stores, thrift stores, and many online selling platforms say they design their store format to offer a treasure hunt experience. We develop a model in which customers enjoy searching for a treasure. Our model’s search utility function includes a term based on the treasure’s net value, a term based on the instantaneous likelihood of discovering treasure, and a constant term reflecting other …

Staff Education To Standardize Suicide Risk Assessment Across All Patients, Ebiere Erukanure

Walden Dissertations and Doctoral Studies

No abstract provided.

The Lived Experience Of African Immigrants Receiving Mental Health Services In The U.S., Ori Adure Onazi

Walden Dissertations and Doctoral Studies

No abstract provided.

Evaluating The Effect Of Implicit Bias Training On Healthcare Staff In An Outpatient Mental Health Clinic, Mah Awoh

Walden Dissertations and Doctoral Studies

No abstract provided.

The Impact Of Policing On The Mental Health Of Black Communities, Roishetta Sibley Ozane

Walden Dissertations and Doctoral Studies

No abstract provided.

Exploring The Social Structures Developed By The Internally Displaced Persons (Idps) To Govern Their Lives During Displacement, A Burkina Faso Case Study, Abdou-Salam Savadogo

Walden Dissertations and Doctoral Studies

No abstract provided.

Exploring Coping Mechanisms For Colorism Among African American Women: A Focus On Social Support And Resilience, Zelina Marie Chinwoh

Walden Dissertations and Doctoral Studies

No abstract provided.

Exploring The Impact Of Mental Health On Childhood Obesity In Southern African American Youth Ages 12-18, Shari Scott Robinson

Walden Dissertations and Doctoral Studies

No abstract provided.

Experiences Of Recent High School Graduates In Missouri Regarding Stress Management And Coping Skills Within Their Health Education Curriculum, Courtney Faye Thomas

Walden Dissertations and Doctoral Studies

No abstract provided.

University Counselors' Experiences With Providing Services To Students Of Color, Kim Ridley

Walden Dissertations and Doctoral Studies

No abstract provided.

Standardized Pediatric Obesity Screening Guideline For Children Ages 5–17 Years, Jennifer Nacius

Walden Dissertations and Doctoral Studies

No abstract provided.

Evidence-Based Approaches To Managing Adolescent Aggression, April Dade

Walden Dissertations and Doctoral Studies

No abstract provided.

Beyond A Corrective Experience: Reimagining Liberation In Special Education, Erin Elise Macnabb

Doctoral Dissertations

This qualitative study establishes a critical bridge between special education and liberatory pedagogy, positioning these historically siloed fields as interdependent for systemic justice. While Special Education Teachers (SETs) daily work involves resisting systemic oppression, special education has been historically excluded from liberatory pedagogy and instead focused on medicalized models and deficit based assumptions. The separation of liberatory pedagogy and special education contributes to professional siloing and a culture of compliance that prioritizes bureaucratic processes over the meaningful and radical work of SETs.

The research utilizes a qualitative design rooted in Collaborative Critical Inquiry (CCI) where an intentional sample of veteran, …

Electronic Research Notebooks And Partnership Checklists: Fostering Cultured Collaboration In Evidence Synthesis Projects Using Labarchives And Swirl-Sr, Gary Kaplan, Mslis, Ahip, Abby Adamczyk, Mlis, Ahip, Emmett Booth, Mlis, Ahip, Stephanie Roth, Mlis, Ahip

Academic Commons and Scott Memorial Library Staff Papers and Presentations

Background

Librarians providing evidence synthesis services often face project management challenges, from tracking progress on search strategy development to clarifying team roles. Librarians have a variety of tools to address these challenges.¹ We propose using electronic lab notebooks (ELNs), which standardize how scientists record research progress. Institutions have adapted ELNs to protect intellectual property and improve rigor and reproducibility.

Although many published systematic reviews report following guidelines such as PRISMA, they still lack rigor and reproducibility.² Therefore, one of the authors developed the Standards for Working with Research Librarians-on Systematic Reviews (SWiRL-SR) checklist to facilitate collaboration and improve …

Astrocytic Contributions To The Pathogenesis Of Chronic Traumatic Encephalopathy: A Scoping Review, Alex Kubiak, Kameron Hahn, Nicholas Powers, Ethan Arroyo, Carson Vandello, Joseph Martins, Ling He

Student Publications

Background: Chronic traumatic encephalopathy (CTE) is classically defined as a neuroglial tauopathy characterized by perivascular accumulation of hyperphosphorylated tau within neurons and astrocytes. Defining lesions localize to the depths of cortical sulci, implicating vascular and glial elements in early pathogenesis. This systematic scoping review evaluates the extent to which astrocytic dysfunction contributes to CTE pathogenesis, specifically whether astrocytic alterations precede or potentiate neuronal tauopathy.

Methods: A structured search of PubMed, Embase, Web of Science, and Scopus was conducted from inception through December 2025 in accordance with PRISMA 2020 guidelines. Due to substantial heterogeneity in study design, including postmortem analyses, experimental …

The Status Of The 2025 U.S.-Ukraine Minerals Agreement Under International Law And Why It Is Unsustainable

Washington International Law Journal

No abstract provided.

Automatic Speed Guidance Method And Simulation Evaluation For Trams At Intersections, Jing Teng, Wencong Tong, Zhongjie Zhang, Xing Yao, Junxian Li

Journal of System Simulation

To address the lack of speed regulation mechanism and the high dispersion of operational time in the current manual driving mode, this paper proposes an automatic speed guidance method for trams at intersections. Considering the speed disturbances caused by potential traffic conflicts at intersections, an initial decision point for safe passage speed at an intersection is established, dividing the operational curve into deterministic segments and disturbance-response segments.To verify the effectiveness of the method, a case study of Songjiang Tram Line 1 is conducted.Driving simulation experiments are performed to obtain manual driving trajectories, and a dynamic trajectory simulation model …