Digital Commons Network^™

Hydrochemical And Environmental Assessment Of Groundwater In Al-Yusufiyah District South-West Baghdad, Iraq, Rafal Abdulrazzaq, Tariq Hussain, Ghufran Jumaah

Engineering and Technology Journal

Groundwater in Yusufiyah  represents the main water source for drinking and irrigation purposes in the dry season, so this research was conducted to assess and evaluate the hydrochemistry of groundwater in this area. (15) wells were selected for sampling in this area with depth ranges between 10-20 meters. , Groundwater generally flows from east to west and from northeast to southwest.Physical parameters for water samples were measured included temperature, pH, electrical conductivity (EC), and total dissolved solids (TDS),where the chemical parameters included major cations (Ca+2, Mg+2, Na+2, and K+) and major anions (NO3-1, SO4-2,Cl-, and HCO3-).  The results indicated that …

Physical Properties Of Pure Gold Nanoparticles And Gold Doped Zno Nanoparticles Using Laser Ablation In Liquid For Sensor Applications, Nabaa Hassan, Makram Fakhri, Evan Salim

Engineering and Technology Journal

In this paper, the effect of using laser ablation of pure gold targets to obtain gold Nano rods and for pure zinc targets to obtain zinc oxide nanoparticles was studied separately in ethanol using an Nd:YAG laser tattoo removal (nanosecond pulses) and then mixing the resulting mixtures to obtain gold dopant with zinc oxide. Transmission electron microscopy (TEM), (XRD) X-Ray Diffraction and the optical properties were used to characterize the pure gold Nano rods, ZnO nanoparticles, and Au doped ZnO nanoparticles. Based on XRD and TEM, the results revealed the properties of the produced gold Nano roads. The obtained results …

A Comparative Study Of Perturb And Observe (P&O) And Incremental Conductance (Inc) Pv Mppt Techniques At Different Radiation And Temperature Conditions, Marwan Ahmad, Ali Numan, Dhari Mahmood

Engineering and Technology Journal

The biggest challenge in the solar system is to extract the maximum output powerfrom photovoltaic (PV) panels under different solar radiation and temperatureconditions. This paper presents a comparative study between perturb and observe(P & O) and incremental conduction (INC) algorithms. These are the most popularalgorithms for tracking solar PV panels and extracting the maximum power point(MPP) under different climate conditions. The studied PV system and the MPPTtechniques have been investigated by simulation using MATLAB/Simulink. Thesimulation includes a boost converter, which increases the PV panel voltage bycontrolling the duty cycle. The obtained results show that the P & O performanceclose to …

A Combining Two Ksvm Classifiers Based On True Pixel Values And Discrete Wavelet Transform For Mri-Based Brain Tumor Detection And Classification, Ali Mohammed, Mohammed Noaman, Hassan Azzawi

Engineering and Technology Journal

The studies on brain tumor detection and classification are continuing to improvethe specialists’ ability in diagnosis. Magnetic Resonance Imaging (MRI) is one ofthe most common techniques used to evaluate brain tumors diagnosis. However,brain tumors diagnosis is a difficult process due to congenital malformations andpossible errors in diagnosing benign from malignant tumors. Therefore, thisresearch aims to propose an integrated algorithm to classify brain tumors followingtwo stages using the Kernel Support Vector Machine (KSVM) classifier. Firststage classifies the tumors as normal and abnormal, and the second classifiesabnormal tumors as benign and malignant. The first KSVM employs extractionfeatures by considering the pixel values …

Preparation Of Metakaolin Based Geopolymer Foam Using A Combination Of Na And K Types Of Alkali Activators, Mohammed Radhi, Ahmed Al-Ghaban, Imad Disher

Engineering and Technology Journal

In this research, the ordinary Portland cement (OPC) was mixed with metakaolin, activator, hydrogen peroxide, and olive oil to synthesize hybrid geopolymer foam. The obtained results indicated internal heat release throughout OPC hydration in the combination. OPC was employed as a calcium source in geopolymers (Geopolymer-Portland cement (HGPF)) to explore the curing process of geopolymers at ambient temperature. The functionality of geopolymer components and (HGPF) mixture, the elemental composition, and proportion analyses have been compared. A principal aim of this research focuses on developing geopolymer foam and conducting many tests such as physical tests related to the surface area and …

Effect Of The Waste Rubber Tires Aggregate On Some Properties Of Normal Concrete, Abdul Kamel, Ahmed Ali, Nahedh Ali, Mohammed Kadhum

Engineering and Technology Journal

Waste rubber tires are considered to have substantial environmental and economic impacts, and they are non-biodegradable.  This study aims to get rid of waste tires as much as possible and study their benefits and effects on concrete using (chips and crumbs) as an aggregate substitution to fine and coarse aggregates together in making concrete (CRC) and at different percentages of (5, 10, 15, 20, and 25) % by volume. This use can reduce the risk and effect of waste tires. The tests reported a reduction in workability, compressive, and flexural values with the increase in the substitution rate of rubber. …

Blind Assistive System Based On Real Time Object Recognition Using Machine Learning, Mais Kadhim, Bushra Oleiwi

Engineering and Technology Journal

Healthy people carry out their daily lives normally, but the visually impaired and the blind face difficulties in practicing their daily activities safely because they are ignorant of the organisms surrounding them.  Smart systems come as solutions to help this segment of people in a way that enables them to practice their daily activities safely as possible.  Blind assistive system using deep learning based You Only Look Once algorithm (YOLO) and Open CV library for detecting and recognizing objects in images and video streams quickly. This work implemented using python. The results gave a satisfactory performance in detecting and recognizing …

Design And Implementation Of Remote Real-Time Monitor System For Prosthetic Limbs, Hussein Mansoure, Hadeel Abdullah

Engineering and Technology Journal

Persons with Lower-limb amputations experience movement restrictions resulting in worsening their life quality. Wearable sensors are often utilized to evaluate spatial and temporal qualities and kinetic parameters that provide the mechanism to create interactive monitoring of the amputee prosthesis system. Gait events and detection of the gait phase of amputee movement are essential to control the prosthetic devices of lower limbs.  This paper presents real-time monitoring to individuals with lower limb amputation by using a medical wireless sensor. However,  the proposed system used four medical sensor nodes (such as gait, temperature, the pressure of blood, blood oxygenation (SpO2) )for transmitted …

Optimization Process For Biodiesel Production From Waste Cooking Of Vegetable Oil By Microwave Irradiation, Raheek Ibrahim, Ahmed Reja, Abeer Kadhim

Engineering and Technology Journal

Biodiesel is the main alternative to diesel fuel today. The waste cooking vegetable oil can be used as a basic material in its preparation. Microwave irradiation is used in its production and it is considered one of the effective methods that do not consume much power. In this study, biodiesel is produce and determine the factors affecting the quality and quantity of production also investigated using experimental design technique. The effecting of operating variables power, time, and oil-to-ethanol molar ratio were studied, as well as the effect of interaction between operating variables on the quality of production. The optimum conditions …

Corn Oil Performance’S A Bio Cooling Fluid In Electric Distribution Transformer, Ahmed Khudhair, Mohammed Jabal, Samar Ismail

Engineering and Technology Journal

Biodegradable (Vegetable) fluids are considered as environmentally friendly fluids and possess an abundant benefit, they are wildly available by means of renewable sources compared to different kinds of mineral-oil.  Given the occurrence of environmental pollution and health problems from mineral oils.  This paper investigates the effect of utilizing the corn oil for the cooling performing features of distribution electric transformer, and making a comparison with the cooling performance of the electric transformer whith cooling by the commercial mineral fluid. This investigation is done by using the four- ball machine and electric transformers. Each experiment that was executed complies with ASTM …

Full Issue

Newsletter of the Jussi Björling Societies of the USA & UK

No abstract provided.

He Sings In The Spirit Of His Father, Calle Friedner

Newsletter of the Jussi Björling Societies of the USA & UK

It’s a beautiful summer’s day. We are in Jussi Björling’s and his family’s summer paradise on Siarö in the archipelago north of Stockholm, now divided between the two siblings, Ann- Charlotte and Lars. He has built a house of his own and couple of out-buildings in the part of the site where Jussi’s singing studio is situated. Lars is happy: this day he and his wife Leila have been married for exactly seven weeks. We’ll come back to that.

The outdoor temperature is 77 degrees F, but we are sitting talking in the shadow of the trees. Lars says it …

Full Issue

Newsletter of the Jussi Björling Societies of the USA & UK

No abstract provided.

Jussi’S Return To The Metropolitan Opera In 1959, Don Goldberg

Newsletter of the Jussi Björling Societies of the USA & UK

The spring of 1957 was a difficult time for me. I had planned to attend every Bjoerling performance during the 1957-58 season not knowing in the spring of ’57 that those Met performances would be his last ones for two seasons. So the announcement of Jussi’s return to the Met on November 16, 1959 in Cavalleria Rusticana was to begin a special season for me. Getting tickets for that performance involved standing on a long line that stretched down Thirty-ninth Street down to Broadway.

Building Competence And Confidence Through Experiential Learning: A Case Study Of The Bengal Triathlon, Caroline E. Faure Edd; Atc

The COSMA Journal

This descriptive case study examines the perceived effectiveness of the Bengal Triathlon, an experiential learning (EL) activity integrated into a sport management course at Idaho State University. Drawing on student reflections over three years, the study highlights how this experience enhanced students’ confidence and skills in planning and managing sport events, particularly in high-pressure areas such as risk management, event logistics, and customer service. Despite participation being a course requirement, a noticeable shift in student attitudes was observed. Students moved from seeing the event as a mandatory task to taking full ownership, driven by increased motivation and enjoyment. This case …

Hsb Model Comprising Health Literacy, Self-Efficacy, And Blood Sugar Control Behaviors To Empower Older Patients With Type 2 Diabetes In Phetchaburi Province, Thailand, Phasit Sirited, Pattama Suphunnakul

Journal of Health Research

Background: This research aimed to develop an empowerment model (HSB model) to effectively control blood sugar levels and glycosylated hemoglobin (HbA1c) among older patients with uncontrolled type 2 diabetes in Phetchaburi Province, Thailand.

Methods: The study utilized a mixed-methods approach comprising two phases. Phase 1 involved quantitative research on 300 participants using questionnaires to investigate the causal factors related to blood sugar control behavior (α = 0.85). Data analysis was conducted using descriptive statistics and Structural Equation Modeling (SEM). Phase 2 used qualitative research methods, specifically focus group discussions and brainstorming with relevant parties, to develop the HSB empowerment model …

Building Capacity, Changing Teaching Practices: Insights From A Professional Development Program For Educators In A Low-Income Country, Caroline Havery, Mary Kililo, Julie Dopsie, Mary Roroi, Di Brown, Ali Moloney, Lisa Townsend, Amanda Neill, Michele Rumsey, Chris Rossiter, Thelma Ali

Pacific Journal of Health

Background

Building capacity of health professional educators in low- and middle-income countries can improve population health outcomes through upskilling the health workforce. However, education programs must respond to local contexts and challenges including participants’ needs and expectations, language difficulties, and resource limitations. This paper evaluates a program for nursing and community health worker educators in Papua New Guinea.

Methods

This qualitative descriptive study was designed and implemented using a collaborative partnership approach. It comprised six focus groups with 26 educators who were program participants. Thematic analysis examined participants’ perceptions of the program and their implementation of change projects.

Results

Four …

Arachne V8.7: Multi‑Modal Energy‑Harvesting Smart‑Skin With Hierarchical Fractal Morphology, Distributed Mis Interface, And Integrated Structural‑Health Monitoring, Michael Victor Caldwell Mr.

Defensive Publications Series

Arachne v8.7 is a multi‑modal “Smart‑Skin” substrate designed for distributed, durable energy harvesting. The system integrates a triboelectric nanogenerator (TENG) layer, a thermoelectric SnSe layer, and a ZnO nanowire kinetic layer beneath a hierarchical fractal surface engineered to enhance boundary‑layer turbulence. A separated NS‑DBD plasma‑electrode PCB provides surface‑conditioning and environmental robustness. A 6‑pin Magnetic‑Inductive Snap (MIS) interface enables modular power routing, environmental telemetry, and activation of a UV‑curable DCPD‑PDMS self‑healing layer. Embedded fiber‑optic strain sensors provide real‑time structural‑health data for the APR AI predictive‑maintenance engine. This disclosure defines the system architecture, materials, electrical interface, sensing logic, and functional principles required …

Integration Of Live Network Knowledge Graphs With Rag For Enhanced Ai-Driven Network Operations, Robert Barton, Vishal S Desai

Defensive Publications Series

Proposed herein are techniques to enhance an agentic Artificial Intelligence (AI) platform by integrating a dynamic, on-premises network topology knowledge graph with a Retrieval Augmented Generation (RAG) system through graph-based techniques. Unlike traditional text-based RAG, the approach segments the network topology into semantically meaningful subgraphs called topology chunks, which are embedded into a vector space for efficient similarity search and retrieval based on user queries. These retrieved topology chunks then augment the prompts that can be sent to an agentic AI platform's large language model (LLM), enabling precise, context-aware reasoning about complex network environments.

Retrocardiac Innominate Vein: A Rare Vascular Anomaly Associated With Congenital Heart Disease, Ali Alakhfash, Osama Alrusaini, Fahad Alhabshan, Khaled Alhawri, Abdulrahman Almesned

Journal of the Saudi Heart Association

Atrial septal defects are common congenital heart anomalies and may coexist with rare systemic venous abnormalities. We describe a one-year-old female with a large secundum atrial septal defect and an unusual retrocardiac innominate vein. Transthoracic echocardiography suggested a persistent left superior vena cava, but the innominate vein was absent from its usual location and the coronary sinus was not dilated. Cardiac CT angiography demonstrated a retrocardiac innominate vein draining into the azygos system and subsequently to the right atrium. Surgical atrial septal defect closure was successful. Recognition of this anomaly is essential for accurate diagnosis and procedural planning.

20th Annual Research In The Capitol [Program], March 9, 2026, University Of Northern Iowa. University Honors Program. Iowa State University. Honors Program. University Of Iowa. Honors Program.

Research in the Capitol Programs

Program of research presentations given at the Capitol by students from the University of Northern Iowa, Iowa State University, and the University of Iowa.

Synthesis And Characterization Of Transition Metal Carbide (Max) And Mxene Nanoflakes For Energy Storage And [email protected], Srikanth Ragunath B Mr

Theses and Dissertations

Rapid growth in population and industrialization created a huge demand for superior energy storage devices. Thus, the researchers are in constant search of developing exotic materials towards energy harvesting and storage devices. Batteries, supercapacitors, and fuel cells received a great attention to meet the global demand for energy storage. Among them, supercapacitors are widely preferred as energy storage devices due to higher power density, longer cycle life, and fast charging. The performance of the supercapacitors highly depends on the choice of electrode materials and electrolyte.

Recently, “MXenes”  a new class of layered a new class of layered a new …

2026 March 9 - Staff Senate Agenda And Minutes, Staff Senate, East Tennessee State University

Staff Senate Agendas and Minutes

No abstract provided.

Perceived Black Maternal Narcissism And Their Daughters’ Delinquency: Chronicles From A Daughter’S Interpretation, Nzinga Cates

Walden Dissertations and Doctoral Studies

This qualitative study examined the intricate dynamics between perceived Black narcissistic mothers and their daughters, particularly regarding potential delinquent behaviors exhibited by the daughters. By utilizing in-depth interviews with seven participants, I sought to uncover the psychological and relational factors contributing to these behaviors’ development. Thematic analysis indicated that daughters of narcissistic mothers often endure emotional neglect, manipulation, and lack of healthy role modeling. This can result in feelings of inadequacy and rebellion. Themes of identity confusion, low self-esteem, and desire for autonomy surfaced as significant contributors to the daughters’ engagement in delinquent activities. The study underscored the importance of …

Moderating Effects Of Leadership Style And Organizational Culture On Information Technology Involvement, Erick Dyson

Walden Dissertations and Doctoral Studies

This quantitative correlational study investigated the relationships among leadership styles, organizational culture, information technology involvement (INV), IT adoption intention (ITA), and knowledge-sharing intention (KSI) among managerial staff in educational institutions in the northeastern United States. Grounded in the technology acceptance model (TAM) and knowledge management theory, the study utilized survey responses from 141 participants in supervisory roles. Regression analyses revealed that INV significantly predicted ITA (F = 31.725, p < .001), accounting for 17.7% of the variance. However, ITA demonstrated a statistically significant but inverse relationship with KSI (F = 7.995, p < .001), indicating that greater ITA was associated with lower KSI. Hierarchical regression showed that the inclusion of leadership styles and organizational cultures improved model fit, with the final model explaining 53.3% of the variance in KSI. Charismatic, transformational, and transactional leadership styles moderated the ITA and KSI relationship, while servant and transactional leadership directly predicted KSI. Among cultural types, hierarchy and market cultures moderated the ITA and KSI relationship, while adhocracy, hierarchy, and market cultures directly predicted KSI. Seventeen significant two-factor interactions were identified, highlighting the complex interplay of leadership and culture. Reliability analyses confirmed acceptable internal consistency (α = .71 -.85), and regression diagnostics indicted no assumption violations. These findings challenge traditional TAM assumptions and emphasize the need for context-aware strategies integrating leadership and culture to enhance knowledge sharing in digitally transforming institutions.

Strategies For Bridging The Broadband Gap For An Inclusive Digital Economy, Hassana Asuku

Walden Dissertations and Doctoral Studies

Broadband access remains a critical driver of digital participation and economic inclusion; however, many rural communities continue to lack adequate connectivity and remain excluded from the digital economy. Although Information and Communication Technology (ICT) policymakers, regulators, and operators prioritize expanding broadband infrastructure, limited research exists on the strategies these stakeholders use to successfully bridge rural broadband gaps. Drawing on Jan van Dijk’s resources and appropriation theory, the purpose of this qualitative pragmatic inquiry was to explore the strategies employed by ICT policymakers, regulators, and operators to bridge the broadband gap in rural areas. Eight telecommunications industry players who had successfully …

Civic Engagement And Faith Perspectives, William O'Brochta

Intersections

No abstract provided.

Cv: Jennifer Reft (Physical Therapy), Jennifer Reft

Rehabilitation Sciences Department Curricula Vitae

No abstract provided.

Cv: Carly Jones (Physical Therapy), Carly Jones

Rehabilitation Sciences Department Curricula Vitae

No abstract provided.

Cv: Michael Maninang (Physical Therapy), Michael Maninang

Rehabilitation Sciences Department Curricula Vitae

No abstract provided.