Digital Commons Network^™

Cfd Modeling Of A 120 Kwth Chemical Looping Combustion System, Tabasat Ahmad, Fazl E Rabi, Muhammad Zaman, Atta Ullah

Platform: A Journal of Engineering

```python text = """Chemical looping combustion (CLC) has evolved as a promising technique for carbon capture. In view of the above, a computational fluid dynamics (CFD) study of the existing 120 kWth circulating fluidised bed (CFB) has been carried out. The fuel used in the existing reactor is CH4, and NiO supported by Al2O3 particles is employed as the oxygen carrier. Transient Two-dimensional CFD simulations have been conducted for the DCFB–CLC system. Eulerian –Eulerian method with heterogeneous reaction kinetics has been applied. The CFD simulation yielded results comparable to those obtained from the experimental data. The same approach was then …

Associations Between Health-Seeking Behaviors And Social Support For Adult Black Women In The United States, Patricia Saint Cyr-Hager

Walden Dissertations and Doctoral Studies

A persistent gap exists involving health outcomes for Black women in the United States, regardless of socioeconomic status when compared to Black men and White women. This qualitative case study involved exploring the influence of social support on health-seeking behaviors among Black women. Sixteen participants, between ages 22 to 49 from nine states, were recruited. Data was collected using semi-structured interviews based on the social support theory. An analysis of the network composition showed that family members (including mothers, fathers, sisters, and partners), friends, community support groups not connected to social media, and online community support groups were the most …

Roblox As Open Text: Identity, Meaning, And Ideology Through Eco’S Semiotics, Yuyus Rustandi, Nanang Sutisna

Paradigma: Jurnal Kajian Budaya

This study examines Roblox as a digital cultural space that constructs and represents adolescent identity through Umberto Eco's semiotic approach. Roblox functions not only as a game platform but also as an open text comprising visual signs, social symbols, and complex narratives. This studi is based on a literature review from nine prior empirical studies, this research analyzes how avatars, virtual environments, Robux economy, and user communities shape diverse systems of meaning. Findings show that Roblox serves as a site for identity construction, simulation of social values, and reproduction of dominant discourses such as capitalism and gender performance. The study …

Ai And Creativity, Herbert Midgley

Faculty Publications

This article argues that artificial intelligence is best understood as a tool in continuity with earlier technologies like digital cameras, non-linear editing, MIDI, and desktop publishing, rather than as a magical threat that will erase creativity or employment. Drawing on historical shifts from film to digital video, manual paste‑up to graphic design software, and acoustic instruments to synthesizers, the author shows that new tools disrupt workflows and certain jobs, yet ultimately broaden access and generate new creative opportunities. Concerns about AI’s resource use are contextualized by comparing its water footprint to bottled water, agriculture, beef production, and textiles, concluding that …

Pdf Of Full Issue: 17(6) 2025, Rosalind L. Raby

Journal of Comparative & International Higher Education

No abstract provided.

A Novel Rheological Technique To Measure The Yield Stress In Equibiaxial Elongation, Asher Segal

Theses

Yield stress measurement in non-Newtonian fluids, particularly under complex flow conditions such as equibiaxial elongation, remains a significant challenge in experimental rheology. This work presents the development of a novel method, Continuous Lubricated Squeezing Flow (CLSF), designed to quantify the normal yield stress of viscoelastic materials while minimizing boundary artifacts.

The CLSF method was implemented and validated using Carbopol 940, a model yield-stress gel, at concentrations of 1 wt% and 2 wt%. Comparative shear rheology was first performed to establish baseline yield stresses and verify sample integrity. CLSF experiments were then conducted over controlled flow rate increments and gap distances …

Forecasting Inland Waterway Container On Barge Volume: A Machine Learning Approach Using Economic Features, Fan Bu, Heather Nachtmann

Industrial Engineering Faculty Publications and Presentations

This study presents a machine learning approach to predict Container-on-Barge (COB) volume in Inland Waterway Transportation (IWT) systems, focusing exclusively on using economic features as predictors. Five machine learning models were trained using European economic features to forecast COB volume, while historical COB volume was used solely for validation and hyperparameter tuning. Among these models, the convolutional neural network combined with long short-term memory (CNN-LSTM) exhibited superior performance, achieving a mean absolute percentage error (MAPE) of 1.08% when forecasting eight consecutive quarters of COB volume in Europe. The results demonstrate the feasibility of accurately forecasting COB volume using economic features. …

Health Risk Assessment (Hra) In Home-Based Ironing Businesses: Risk Identification, Intervention, And Evaluation In Johar Baru District, Central Jakarta, Heru Alfares, Irawadi Darmaputra, Marsen Isbayuputra, Muhammad Ilyas

Occupational and Environmental Medicine Journal of Indonesia

Background Home-based ironing businesses in Johar Baru District, Central Jakarta, are part of the informal sector, vulnerable to health risks due to suboptimal working conditions. This study aims to identify, assess, and control health risks through a Health Risk Assessment (HRA) approach.

Methods Research methods include direct observation, interviews, environmental measurements, health screenings, and ergonomic surveys using the BRIEF (Baseline Risk Identification of Ergonomic Factor) instrument.

Results The results indicate that the temperature in the ironing area reaches 33°C, exceeding the comfort standard, and that 80% of workers have dark yellow urine, indicating a high risk of dehydration. Risk assessment …

Burden Of Musculoskeletal Disorders, Associated Risk Factors And Perceptions On Prevention Among Airport Baggage Handlers, Ashish A. Trivedi Md, Alice Lai, Mahmud Tasim, Nik Tuah

Occupational and Environmental Medicine Journal of Indonesia

Background Airport baggage handlers are involved in manual handling of heavy loads, predisposing them to the risk of developing work-related musculoskeletal disorders (MSDs). This study aimed to determine the burden of self-reported MSDs and their associated factors among airport baggage handlers in Brunei Darussalam.

Methods In this cross-sectional study, we used a self-administered questionnaire to collect demographic and work profile data. We also incorporated the Nordic Musculoskeletal Questionnaire to assess body-part MSD symptoms over a 12-month period. Baggage handlers’ perceptions of the likelihood of specific work tasks related to MSDs and of preventative measures were also sought.  The data were …

Comparative Analysis Of Groundwater Quality Based On Chemical Parameters Around Final Disposal Sites Using Open Dumping And Sanitary Landfill Methods, Shiesil Rizqia Amadia, Mika Vernicia Humairo

Preventia: The Indonesian Journal of Public Health

The main environmental issue at landfill sites is the seepage of leachate into the ground, which contaminates surrounding aquifers. Communities residing within one kilometer of landfill sites are at high risk of environmental pollution. This study aimed to analyze differences in groundwater quality around landfills applying open dumping and sanitary landfill methods, and to compare groundwater quality at safe and unsafe distances from these sites. The research was conducted around the Cipayung landfill in Depok (open dumping) and the Talangagung landfill in Kepanjen (sanitary landfill). The study adopted an analytical observational approach using a cross-sectional design. The independent variables included …

Analysis Of Demand And Supply Of Radiotherapy Services At Dr.M.Djamil General Hospital Padang, Viola Shinta Dewi, Catur Suharinto, Zarni Zamzahar, Yulhaini Yulhaini

Preventia: The Indonesian Journal of Public Health

Around 10 million cases of cancer are discovered in the world per year, and it will continue to increase. Half of cancer cases require radiotherapy as treatment therapy. Dr. M. Djamil General Hospital, Padang, in 2021, has only 1 Cobalt radiotherapy. This study aimed to analyze the demand and supply of radiotherapy services at Dr. M. Djamil General Hospital, Padang. This descriptive study was conducted at Dr. M. Djamil General Hospital, Padang from May to December 2022. Data were analyzed using univariate analysis to describe the variables studied. This study reported that 241 patients were registered and received radiotherapy services. …

Asadh: A Meta Learning-Based Auto-Selective System For Anomaly Detection In Healthcare, Nadia Rashid, Rashid Mehmood, Fahad Alqurashi, Turki Alghamdi

Journal of King Abdulaziz University: Computing and Information Technology Sciences

Anomaly detection plays a crucial role in healthcare, supporting early disease identification, process improvement, and the reliability of medical equipment. Traditional machine learning (ML) and deep learning (DL) models often fail to generalize across heterogeneous medical datasets due to variations in feature distributions, class imbalance, and high dimensionality. To address this, we extend our earlier ASAD framework and propose ASADH (Auto-Selective Anomaly Detection in Healthcare), designed specifically for medical anomaly detection. ASADH applies meta-learning over a unified set of cross-modal meta-features spanning tabular, time-series, and medical image data to characterize each dataset and automatically recommend the most suitable anomaly detection …

Deep Learning Approaches For License Plate Detection In Saudi Arabia, Reemah M. Alhebshi, Abeer Almakky, Lujain Waleed Aljahdali, Raghad Bakr Hawsawi

Journal of King Abdulaziz University: Computing and Information Technology Sciences

The most important and challenging tasks in an intelligent traffic monitoring system are vehicle detection and classification. Conventional approaches are significantly computationally intensive and create limitations when the data-collecting modality alters. This study evaluates the effectiveness of deep learning models in extracting and classifying key vehicle attributes, such as license plates, models, and colors, through four AI-driven components for vehicle analysis. The YOLOv8m model was used for detecting the vehicle license plate and character recognition, achieving accuracy ranging from 95.10% to 99.24%. For vehicle model recognition, the Xception model also showed high performance with a precision of 96.79%. The EfficientNetB3 …

Hybrid Intelligent Architecture For Context-Driven Code Clone Detection, Afnan A. Almatrafi, Fathy A. Eassa, Sanaa A. Sharaf

Journal of King Abdulaziz University: Computing and Information Technology Sciences

Code clone detection is a critical task in software engineering, directly influencing code maintainability, quality, and technical debt management. Despite advancements in both static analysis techniques and AI-driven approaches, existing solutions remain fragmented, either relying on deterministic syntactic analysis for syntactic clone detection or employing machine learning, deep learning, and LLM-based methods for semantic clone detection. This separation leads to inefficiencies, scalability challenges, and missed optimization opportunities. This paper introduces a Hybrid Intelligent Clone Detection Architecture (HICDA), a context-driven delegation framework that routes clone detection tasks based on syntactic or semantic characteristics. Central to this architecture is the conceptualization of …

Vision-Based Triage Model For Fall Detection, Reem Alshalawi, Jamilah Alharbi, Mohammed Qadrouh

Journal of King Abdulaziz University: Computing and Information Technology Sciences

Artificial Intelligent (AI)has different methods to utilize technology in various scenarios. AI also has major impacts and values over emergency services. It can take actions and provide the ability to handle and support emergency cases that take place within a proper time to reduce the effect on the human lives. The paper addresses an AI model that forecasts and estimates syncope scenarios and incidents that may occur ahead of time or on the fly which results in immediate interventions and support to those cases to reduce complication. In this study, we have built a model using TensorFlow (TF) and Posenet …

Floating Nuclear Power Plants On The Horizon. Do We Need A Revised Brussels Convention On The Liability Of The Operators Of Nuclear Ships?, Jakub Handrlica

Indonesia Law Review

Adopted in 1962, the Brussels Convention on the Liability of the Operators of Nuclear Ships has been considered an obsolete instrument for the last 60 years. In light of renewed interest in floating nuclear power plants (FNPPs), this article revisits the regime of this half-forgotten Convention and calls for its modernisation. The fact is that a robust legal framework for liability and compensation must accompany any prospective deployment of FNPPs. This article argues that adopting a Revised Brussels Convention will help address these challenges. This article aims to identify the reasons for this modernisation and to outline its significant features. …

Gut Microbiome Metagenomics In Clinical Practice: Bridging The Gap Between Research And Precision Medicine, Henok Ayalew Tegegne, Tor C Savidge

Faculty, Staff and Students Publications

Gut microbiome metagenomics is emerging as a cornerstone of precision medicine, offering exceptional opportunities for improved diagnostics, risk stratification, and therapeutic development. Advances in high-throughput sequencing have uncovered robust microbial signatures linked to infectious, inflammatory, metabolic, and neoplastic diseases. Clinical applications now include pathogen detection, antimicrobial resistance profiling, microbiota-based therapies, and enterotype-guided patient stratification. However, translation into routine care is hindered by significant barriers including methodological variability, limited functional annotation, lack of bioinformatics standardization, and underrepresentation of global populations. This review synthesizes current translational strategies, emphasizing the need for hypothesis-driven designs, multi-omic integration, longitudinal and multi-center cohorts, and mechanistic validation. …

Laughter In Adversity: Exploring The Meaning, Motivations, And Social Uses Of Dark Humor Among Filipino College Students, Jermilen S. Murillo, Criztine A. Capin, Monica R. Mesa, Robyn Nicole A. Torres, Chrizelle M. Villanueva

Sinaya: A Philippine Journal for Senior High School Teachers and Students

This study explores how Filipino Generation Z college students in Metro Manila utilize dark humor as a coping mechanism for stress management, mental health resilience, and navigating social dynamics. Drawing on a descriptive phenomenological approach, in-depth interviews with nine students aged 21 to 23 years old revealed that dark humor operates as both an emotional outlet and a cultural expression rooted in Filipino values. Themes showed that its use is mindful and context-sensitive, shaped by pakikiramdam (emotional sensitivity) and pakikipagkapwa (relational empathy), allowing participants to reframe grief, ease emotional burdens, and build intimacy within trusted circles. These practices reflect pantawang …

Coolies Of Shimla: Modern Slavery As Relic Of The British Raj, Priya Kapoor

Politics and Global Affairs Faculty Publications and Presentations

Coolie labor needs to be understood as a contemporary transnational practice rooted in local practices of feudal kings and the British Empire. When the British Raj established Shimla as its summer capital in 1864, they did not eliminate archaic labor practices; instead, they cleverly modified them to serve the Empire’s infrastructural needs. Under the guise of reform, the British introduced nominal pay to bypass anti-slavery laws, effectively rebranding the forced laborer as the "coolie"—a racialized linguistic construct that signified a state of permanent subalternity. This labor force was the veritable backbone of the Raj, manually carving the treacherous Hindustan-Tibet Road …

Heathammer: Effects Of Thermal Stress On Dram Technology Reliability Using Rowpress And Rowhammer, Filip Roth Tronnes-Christensen

Theses

Modern DRAM scaling has reduced cell capacitance and increased thermal sensitivity, making disturbance-based faults such as RowHammer and RowPress increasingly significant reliability and security concerns. RowHammer induces bit flips through repeated row activations, while RowPress does so by holding a wordline open for an extended duration; both exploit inherent capacitive coupling and leakage mechanisms in dense DRAM arrays. This thesis introduces HeatHammer, a thermally assisted disturbance exploit that interleaves RowPress and RowHammer operations to amplify charge leakage and trigger row-traversing bit flips. Using the FPGA-based DRAM-Bender test platform, HeatHammer is evaluated on four commercially available DDR4 modules from different manufacturers …

Optimal Sizing Of Pv Water Pumping System For Off-Grid Rural Communities, Basma Abulkheir, Eid Gouda, A. A. Hegazi, Amir Abdel Menaem

Mansoura Engineering Journal

A large population worldwide lives in remote rural communities without access to electricity due to the limited reach of national transmission networks. This creates significant challenges in accessing water, hindering improvements in living conditions for off-grid communities. Photovoltaic water pumping systems (PVWPSs) offer a viable solution to this issue, but their sustainability must be examined due to the unpredictable nature of solar radiation. This paper presents a practical techno-economic approach to optimally size a PVWPS. A Particle Swarm Optimization (PSO) algorithm is employed, considering technical and economic indicators like life cycle cost, loss of load probability and PV curtailment rate. …

Attending To Present Others: A Framework For Supporting Multilingual Graduate Writers, María P. Carvajal Regidor, Allison Kranek

The Writing Center Journal

Extending prior work on present others, individuals who are not physically present in writing center sessions—such as advisors, colleagues, and peers—but who directly or indirectly impact what happens during consultations (Kranek & Carvajal Regidor, 2021), we argue that attending to present others is one way to more holistically support multilingual graduate writers. Based on data from session recordings, we contend that present others can be used as a framework to train consultants to better address the specific needs of this student population by acknowledging their socialization processes, feedback networks, language needs, and emotions. Then, we share two approaches to consultant …

Implementation Of Machine Learning And Large Language Models For High Entropy Alloys, Ruth E. Mellin

Mechanical Engineering and Materials Science Independent Study

High-entropy alloys (HEAs) are a relatively recent class of materials formed by alloying five or more elements in near-equimolar ratios. Their promising mechanical and thermal properties make them promising for a wide range of applications, however, the vast compositional space presents a challenge for efficient exploration. As a result, robust and structured databases are critical for guiding HEA research and accelerating materials discovery. In this project, a computational pipeline was developed to leverage large language models (LLMs) for extraction of compositional data and relevant properties from existing HEA literature. The program integrates structured prompt design, parallel execution, and deterministic post-processing …

Economic Resilience As A Mediator: Assessing The Impact Of China’S Grazing Withdrawal Project On Herders’ Well-Being In The Yellow River Source Region, Lihua Zhou

Double Helix Methodology

Investigating how China’s most extensive grassland conservation program, the Grazing Withdrawal Project, impacts herders’ resilience and welfare levels is crucial for promoting sustainable grassland protection and enabling herders to withstand external shocks. However, few empirical studies have linked policy measures, economic resilience, and subjective well-being. Based on 266 questionnaires from the Yellow River Source Region, we constructed an indicator system for evaluating economic resilience and employed multiple linear regression to explore the key variables affecting herders’ economic resilience and subjective well-being under the context of the project and to clarify the mediating effect of resilience in translating government interventions into …

Toward An Orderly And Efficient Post-Disaster Humanitarian Material Donation System: A Case Study Of The ‘9·5’ Luding Earthquake, An Chen

Double Helix Methodology

Purpose – This study aims to assess the orderliness of the humanitarian material donation system (HMDS) following the 2022 “9·5” Luding Earthquake in China, providing insights into improving disaster relief efficiency and promoting postdisaster recovery. Design/methodology/approach – The orderliness of the HMDS is evaluated across three dimensions: donation input, donation output and donation environment. Correlation entropy and running entropy models are used to assess the system’s dynamics and to compare the performance of four donor types: government, enterprises, organizations and individuals. Findings – The early emergency phase (the first 12 days after the earthquake) is characterized by disorder and repeated …

The Concept, Dimensions, And Measurement Of Innovative Competitive Behavior Of Chinese Scientific And Technological Personnel, Rui Li

Double Helix Methodology

Introduction: While competitive behavior in innovation activities is increasingly prevalent in practice and actively promoted by policymakers, it remains an under explored area in academic research. To bridge this gap, we introduce the concept of “innovative competitive behavior,” providing a conceptual definition and clarifying its theoretical boundaries, rooted in social comparison theory from psychology. Methods: A mixed-methods approach was employed to systematically examine this construct. First, a qualitative study guided by grounded theory was conducted to explore the core dimensions of the construct. Subsequently, a quantitative phase involved the development and validation of a psychological scale through questionnaire surveys and …

Mechanical And Durability Properties Of Cement Panels Reinforced With Hybrid And Pva Fibers, Shukran H. Faraj, Mohammed J. Kadhim

Al-Esraa University College Journal for Engineering Sciences

This study examines the synergistic effects of hybrid fibers (HF) and polyvinyl alcohol (PVA) fibers on the structural and thermal properties of silica-fume cement panels. Scanning electron microscopy (SEM) was employed to examine mortar mixtures with varying fiber content to assess their enhancement of microstructure. We conducted several experiments on compressive, flexural, and splitting tensile strength, in addition to water absorption and thermal conductivity. The results indicate that 1% HF exhibits superior mechanical qualities, with a compressive strength of 46.89 MPa, a flexural strength of 8.56 MPa, and a reduced thermal conductivity of 0.83 W/m•K. PVA fibers at 2% enhance …

Characterization And Biocompatibility Test Of Chitosan-Alginate-Fucoidan Hydrogel As Potential Socket Preservation Material: In Vitro Study, Ainiyyah F. Zaizafun, Nurlindah Hamrun, Erni Marlina, Lenni Indriani, Nurhayaty Natsir, Asdar Gani, Arifin

Journal of Dentomaxillofacial Science

Objective: This study aimed to characterize and evaluate the in vitro biocompatibility of chitosan-alginate-fucoidan hydrogel at different concentrations as a potential socket preservation material.

Material and Methods: Hydrogels were prepared using various concentrations of chitosan-alginate-fucoidan formulas. Alginate and fucoidan which were extracted from brown algae, were dissolved in purified water with stirring, then mixed with chitosan from white shrimp skin, which was prepared in 2% acetic acid. The hydrogels were characterized using scanning electron microscopy (SEM) and Fourier transform-infrared spectroscopy (FTIR). Biocompatibility was assessed using KUSA cells through cell viability, cytotoxicity, and cell adhesion. Data were analyzed using a one-way …

Helical Coil Compression Spring Retrofit Design Of Wheelbarrow For Optimal Load Carrying Effectiveness, Cornelius Ogbodo Anayo Agbo

Makara Journal of Technology

Wheelbarrows are essential multipurpose and dual-function materials handling equipment for many industries and homes. They find exclusive use in the movement of finished goods and raw materials where no other form of transportation works. However, the traditional wheelbarrows require enormous human effort to accomplish the task of conveying a reasonable amount of load from one place to another. During the process, shock loads from road irregularities are transmitted directly to the Barrow pusher. Therefore, this study investigated a retrofitted helical coil, compression spring, wheelbarrow design for effective load transportation. A wheelbarrow with a trapezoidal bucket capacity of 50 l was …

Aerodynamics And Heat Transfer In Polymer Blown Film Processing: Experimental And Numerical Investigation, Mohammad Luqman Zulbakri, Nur Atiqah Mat. Rautin, Raa Khimi Shuib, Ku Marsilla Ku Ishak, Auratus Zuratul Ain Abdul Hamid, Mohamad Danial Shafiq, Mohamad Yusof Idroas, Muhammad Khalil Abdullah

Makara Journal of Technology

The effects of airflow dynamics, heat transfer, and mechanical properties on the HDPE blown film extrusion process were examined using a single-lip air ring with a fixed compressed-air valve opening angle of 10°. Reynolds numbers ranging from 9175 to 25911 were analyzed to understand their impact on cooling efficiency, bubble morphology, and film properties. Numerical simulations employing the Standard k−ω turbulence model in ANSYS FLUENT v2023, with mesh refinement achieving y+ ≈ 1, captured detailed flow and heat transfer behavior. Results showed that higher Reynolds numbers significantly enhanced the heat transfer coefficient, with values increasing from 1096 W/m²·K at Reynold …