Digital Commons Network^™

Entropic Forces Near Fluctuating Surfaces, Rubayet Hassan

Dissertations

Nanoscale structures are inherently dynamic due to persistent thermal fluctuations. Even in solid materials, these random deformations, driven by ambient thermal energy, can become significant when their characteristic scale approaches that of the structure itself and strongly influence their overall mechanical behavior. Examples of such structures include crystalline membranes, appearing in diverse forms such as nanotubes, nanoribbons, and kirigami/origami structures. Similarly, biological nanostructures, including lipid membranes, microtubules, actin filaments, and DNA, exhibit extreme flexibility and responsiveness due to their low bending rigidity. Numerous physiological processes are intrinsically linked to these thermal fluctuations, including exocytosis and endocytosis, membrane fusion, pore formation, …

Computational Methods For Single-Cell And Multi-Omic Data Integration And Regulatory Network Inference, Jianlan Ren

Dissertations

Single-cell and multi-omic technologies have transformed the dissection of cellular heterogeneity and regulatory dynamics in health and disease. However, the high dimensionality, technical variability, and biological complexity of these datasets present significant challenges for integration, annotation, and interpretation. In this dissertation, a suite of computational approaches is introduced to address key problems in single-cell and multi-omic data analysis through model-based innovations and applied statistical frameworks.

First, a constrained deep learning framework for single-cell data integration, label transfer, and clustering is proposed. By incorporating biologically motivated constraints into the training process, robust performance is achieved across simulated and benchmark datasets spanning …

Material Degradation And Analysis Of N-Doped Graphene/Mof Nanocatalysts For Orr In Electrochemical Energy Systems, Niladri Talukder

Dissertations

The development of advanced electrochemical energy conversion and storage systems is crucial for achieving sustainable energy security. As alternatives to precious metal-based catalysts in electrochemical systems, especially for the oxygen reduction reaction (ORR), Nitrogen-doped Graphene with Metal-organic Frameworks (N-G/MOF) nanocatalysts have shown exceptional promise in recent years. This research advances the understanding of N-G/MOF nanocatalysts by systematically examining their structural features, degradation traits, correlated performance losses, and other aspects related to catalytic activities.

First, nitrogen-doped graphene (N-G) nanocatalysts were thoroughly investigated, resolving their physical properties, the influence of synthesis parameters, molecular-level material structures, and chemical and electronic structural details of …

Data-Driven Analysis And Atomistic Simulations Of Next-Generation Materials For Energy Conversion And Storage, Yuliang Shi

Dissertations

Metal-organic frameworks (MOFs), with their modular architectures and tunable properties, represent an especially rich domain for accelerated material design and discovery for a range of diverse applications. Within this class of multifunctional materials, two-dimensional (2D) electrically conductive MOFs (EC MOFs) are of particular interest, as their 7r-stacked layered structures combine permanent porosity with electronic conductivity, enabling potential breakthroughs in energy storage, energy conversion, and quantum sensing. But the discovery and design of new EC MOFs based on expensive experimental screening is increasingly impractical due to the infinite chemical space. Furthermore, the practical implementation of EC MOFs for specific tasks depends …

Effect Of Local Steel Slag Incorporation On The Mechanical Properties Of Concrete, Ahmed Safaa Tariq Karmah, Wissam Khadum Alsaraj, Luma A. Zghair

Al-Esraa University College Journal for Engineering Sciences

The increasing interest in the production of concrete through the utilization of inexpensive materials has caused a rise in the number of studies concerning the use of materials with cementitious properties, such as Silica Fume, Slag, Fly Ash and other pozzolanic materials. Moreover, the increasing amounts of Steel Slag being produced from local factories that are being deposited without an available method of disposal provides an opportunity to harness the Slag in the production of an inexpensive, and possibly better concrete. Slag has been used as both an addition and substitution of the cement and fine aggregate. The mixtures included …

Optimal Power Flow Control In The Iraqi Power Grid Using Artificial Intelligence Algorithms For Carbon Emission Reduction, Mohammed Shakir Juber

Al-Esraa University College Journal for Engineering Sciences

Iraq’s power sector remains in a protracted and severe crisis characterized by a significant mismatch between supply and demand, high levels of losses during transmission and distribution, as well as an increasing challenge to the resources base being largely unfavourably. These inefficiencies impose heavy costs on the national economy in excess of 40 billion annually and they also reinforce greenhouse gas emissions, and exacerbate environmental issues. To deal with these problems, we proposed in this paper that a new hybrid AI tool should be developed for the solution of multi-objective optimization problem based on purpose Genetic Algorithm (GA) merger with …

Applying Machine Learning Techniques For Early Detection Of Cyber Attacks On Iot Devices, Noor Adnan Allamy

Al-Esraa University College Journal for Engineering Sciences

This research designs, implements, and evaluates a machine learning-based framework for the early detection of cyber attacks targeting Internet of Things (IoT) devices, with a specific focus on the context and challenges present in Iraq. The study conducts a comparative analysis of three supervised learning algorithms—Support Vector Machine (SVM), Random Forest (RF), and Deep Neural Networks (DNN)—using a combination of benchmark datasets (NSL-KDD, CIC-IDS-2017, Bot-IoT) and a synthesized dataset adapted to simulate the Iraqi threat landscape. Key performance metrics, including accuracy, precision, recall, and F1-score, were used for evaluation. The proposed Random Forest model demonstrated superior performance, achieving an accuracy …

Ai-Enhanced Heat Transfer Optimization In Magnetic Bio-Nanofluids, Hasan Attyah Shaboot

Al-Esraa University College Journal for Engineering Sciences

This study presents a hybrid Artificial Intelligence–Computational Fluid Dynamics (AI-CFD) framework for optimizing heat transfer in magnetic bio-nanofluids subjected to external magnetic fields. Magnetic bio-nanofluids, composed of biocompatible base fluids containing superparamagnetic nanoparticles, exhibit tunable thermal and flow behavior, making them promising for biomedical and micro-cooling applications. Conventional optimization methods based on experiments or brute-force CFD are computationally expensive and limited in exploring the full design space. To overcome these challenges, an Artificial Neural Network (ANN) surrogate model was developed to predict two key performance indicators, the Nusselt number and the friction factor, with high accuracy (R² > 0.997). The surrogate …

Hybrid Experimental–Computational Study On The Energy Absorption Of Graphene Nanoplatelet-Reinforced Sandwich Structures, Hamdan Yousif Hamdan

Al-Esraa University College Journal for Engineering Sciences

Background: Sandwich composites are widely used in aerospace, automotive, and marine applications because of their lightweight, stiffness, and strength, but they remain prone to out-of-plane impacts and barely visible impact damage (BVID). Graphene Nanoplatelets (GNPs) have shown strong potential to improve fracture toughness and impact resistance. However, hybrid experimental–computational studies applying such reinforcement are still lacking in developing contexts like Iraq, where practical and accessible solutions are essential. Aims: The study investigates the effect of GNP reinforcement on the low-velocity impact behavior and energy absorption of glass fiber/epoxy sandwich panels with PVC foam and balsa wood cores. Objectives include fabricating …

Effect Of Thick Closed Walls Of West And South Elevations Of Iraqi Middle And South Territory Housing Building On Reducing Energy Use, Abeer Qasim Jbur, Shaimaa M. Hamza, Mayyadah Lutfi Abdulwahhab

Al-Esraa University College Journal for Engineering Sciences

Thermal insulation is one of the most important factors in achieving sustainability, increasing efficiency, and reducing energy consumption, but modern insulation materials are expensive, in addition to their availability. Therefore, through our research, we resorted to investigating the issue of reducing thermal load in buildings through the use of thick-walled facades in the southern and western facades, where we studied a building with two windows with windows on the southern and western facades and another without these windows and with thick walls, for two locations, the first in central Iraq, which is the city of Baghdad, and the second in …

The Impact Of Ethyl Levulinate Additive On Diesel Engine Performance And Emissions: An Experimental Study, Maha Ali Ghadbaan

Al-Esraa University College Journal for Engineering Sciences

This study explores the environmental and operational impact of adding Ethyl Levulinate—a biodegradable ester derived from biomass—to diesel fuel. A fuel blend known as B5El6 (comprising 5% biodiesel and 6% Ethyl Levulinate) was prepared and tested experimentally using a single-cylinder diesel engine operating at a constant speed of 1500 rpm under full load conditions. Performance metrics and emission data were recorded, and a Life Cycle Assessment (LCA) was conducted using the IMPACT2002+ methodology.

The results revealed that B5El6 significantly reduced greenhouse gas emissions (100 kg CO2 eq) and improved ecosystem quality. However, it presented challenges in terms of human health …

Review: Photo Archives And The Place Of Photography, Alex Brinson

Provenance, Journal of the Society of Georgia Archivists

Review: Photo Archives and the Place of Photography, Routledge History of Photography. Edited by Geraldine A. Johnson and Deborah Schultz. (New York: Routledge, 2025), 228 pp. Reviewed by Alex Brinson.

The Role Of The Scenario In Formulating The Contemporary Architectural Text, Rounaq Arif Mohsin, Abbas Ali Hamza, Bashar Shamil Alkhafaji

Al-Esraa University College Journal for Engineering Sciences

In order to create an integrated architectural text, which is a complicated art that blends beauty and practical elements, a rigorous design procedure is necessary. In this situation, the scenario’s role becomes crucial in developing the current architectural text and directing architectural approaches. In order to better understand how the scenario influences the design process and the interactions between various architectural aspects, this project intends to explore and analyze the impact of the scenario in developing and refining architectural text formulation approaches.

The study looks at the idea of a scenario and how it has been used in architecture, as …

Investigation Of Some Physical Properties Of Slurry Infiltrated Fibrous Concrete (Sifcon) Under Different Curing Times, Rand Kh. Mahmoud, Mohmmed Juad Khadhim, Fayq Hasan Jabbar

Al-Esraa University College Journal for Engineering Sciences

This research studied the effects of different types fibers (Basalt, Carbon and Basalt-Carbon hybrid mix) and curing ages (7, 14, 28 and 56 days) on some physical properties of - Slurry infiltrated fibrous concrete (SIFCON). Density, ultrasonic pulse velocity UPV, Poisson’s ratio and water absorption were measured for the experimental study with 30% cement replacement by Class F fly ash to increase sustainability. It was found that properties were significantly affected by the type and dosage of fiber admixture. The UPV was enhanced by basalt fibers and the absorption reduced up to an optimal range of 3–5% after which agglomeration …

Role Of Primary Healthcare Centers In The Prevention Of Overweight And Obesity, Safanah Ghassan Al-Chalabi, Eman Adnan Al-Kaseer

Hilla University College Journal For Medical Science

Background: About two-thirds of the population worldwide are obese or overweight, and if the current trajectory continues, 50% of the population will be obese by 2030. Community health centers and primary care providers are leading the charge against this epidemic.

Objectives: To report on sharing primary healthcare centers in the prevention of obesity via the knowledge, attitude, and practice of primary healthcare physicians.

Methods: A cross-sectional study, including analytical components was performed, involving a total of 224 primary healthcare physicians for the period 1^st Nov. 2024 to 1^st April 2025. In addition to demographic data, knowledge, attitude, and …

Prediction Of Maximum Local Scour Depth Due To Horizontal Jets Of Flushing Gate Using Artificial Neural Network, Adhy Kurniawan, Muhammad Sulaiman, Agus Maryono, Bambang Agus Kironoto, Amalia Ula Hazhiyah

Makara Journal of Technology

Local scour is a serious concern for hydraulic engineers. To maintain the reservoir capacity, flushing accumulated sediment is necessary, resulting in a turbulent and scouring jet from the flushing gate. Predicting the maximum scour depth from these water jets is crucial for civil engineers. Despite many proposed equations, one have shown consistent applicability due to the complex nature of the process. Ensuring accurate prediction between hydraulic parameters and the geometry of the scour hole in prototype experiments remains a key issue. To address this issue, this paper examines the use of artificial neural network (ANN) analysis as a computing device …

Smart Building Rating System: A Comparative Analysis Of National And International Rating Systems, Amanah Hamidah, Mohammed Ali Berawi, Mustika Sari, Gunawan Saroji

CSID Journal of Infrastructure Development

Smart buildings have become a key part of the Fourth Industrial Revolution, driven by the need for efficient, sustainable, and adaptive built environments. Their importance is growing alongside Indonesia’s effort to develop smart cities. This study compares Indonesia’s national smart building certification system, established under Ministerial Regulation No. 10 of 2023, with two international systems: the European Union’s Smart Readiness Indicator (SRI) and the SmartScore certification. The analysis uses a literature review and comparative method to examine each system’s assessment criteria, scoring method, and certification tier. The findings show that Indonesia’s regulation includes six parameters, such as cybersecurity and operational …

“Do We Play By The Same Rules?”: Exploring The Involvement Of The Magic Circle In Navigating Relationships In Popular Multiplayer Video Games, Nathan Toshihiro A. Villanueva, Julianne Margaret M. Lao, Thea Juliana Alvarez Jocom, Liezl R. Astudillo

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

Just like leveling up in a game, dating has transcended the physical world into the realm of multiplayer games where individuals are able to communicate and interact with one another within the virtual third space, the magic circle–the boundary that separates life from play. Within these immersive environments, players create shared experiences that often extend beyond the screen, blurring the line between in-game interactions and real-life emotions. This blurring can lead to emotional spillovers and identity challenges as players navigate the complexities of digital intimacy in world and relationship formation. To define the fluidity of the magic circle, the study …

Green Bonds As A Green Investment To Prevent Greenwashing And Green Financial Crime In Indonesia, Cita Yustisia Serfiyani

Indonesia Law Review

Overcoming the climate crisis should not only be pursued from the aspect of technological invention but also from the financial aspect through issuing securities instruments that align with the green economy mission. Unfortunately, irresponsible parties such as corporations still use the green economy concept for personal gain through greenwashing and green financial crime. The presence of green bonds as green instruments shows a positive trend towards improving the quality of environmentally friendly technological innovations, building green infrastructure, and increasing income in line with increasing public participation in climate issues. However, its application in Indonesia is constrained by the complexity of …

Reconstruction Of Competition Law: Preventing Monopolization Through Data Exploitation In E-Commerce, Diana Fitriana

Indonesia Law Review

Tujuan penelitian ini adalah menganalisis nilai big data dan implikasinya terhadap monopoli usaha, mengkaji perbandingan hukum persaingan usaha dan mengkaji kelemahan hukum persaingan usaha Indonesia, serta menganalisis rekonstruksi hukum Undang-Undang Larangan Monopoli dan Persaingan Usaha Tidak Sehat di masa mendatang. Penelitian ini menggunakan penelitian yuridis normatif (doktrinal) dengan pendekatan perundang-undangan dan konseptual dengan teknik pengumpulan data melalui kajian pustaka, analisis isi, dan studi kasus. Data tersebut kemudian dianalisis secara kualitatif untuk menghasilkan informasi yang komprehensif dan menarik simpulan yang relevan. Big data memiliki kapasitas untuk memicu perilaku monopoli karena mencerminkan permintaan pasar konsumen. Namun, regulasi persaingan di Indonesia kurang dalam …

The Indonesian Guardianship And Indonesian Private International Law, Tiurma Mangihut Pitta Allagan, Dinda R. Himmah, Amirah Hisana

Indonesia Law Review

The increasing of number of cross-border legal relationships, especially family legal relationships, is inevitable. For instance, it is also commonly accepted for a foreign national to have a legal-bond with children from another country, which is also known as intercountry adoption, guardianship and fostership. This paper aims to analyze and classify guardianship involving international dimension within the jurisdiction of Indonesia. The examination of this legal question would be on the basis of Indonesian Private International Law (PIL). The choice of law and the choice of jurisdiction are the basic analysis, further, as to whether the guardianships are in line with …

Combined Effects Of Physical Activity And Uv-B Light On Bdnf In Brain And Oral Function: A Wistar Rat Model Study, Zahreni Hamzah, Tantin Ermawati, I-Dar. Dewanti, Sari Setyaningsih, Yohana M. Penga, Julia Yp. Ariyo

Journal of Dentomaxillofacial Science

Objective: To evaluate the combination effects of physical activity (structured training) and UV-B exposure on serum brain-derived neurotrophic factor (BDNF) levels and assess their association with oral health and cognitive function.
Materials and methods: This study utilized male Wistar rats (3-4 months old, average body weight 250-350 g). The rats were divided into three groups: (K) control group and (P) exercise groups with or without ultraviolet B (UV-B) exposure. The exercise-treated groups underwent treadmill running for 30 minutes per session, divided into three sessions. Following the intervention, the rats were euthanized, and intracardiac blood samples (5 mL serum per rat) …

The Influence Of Parenting Style On The Severity Of Early Childhood Caries In School-Aged Children In Bintaro Village, South Jakarta, Roosje R. Oewen, Witriana Latifa, Tri Damayanti, Marhamah

Journal of Dentomaxillofacial Science

Background: Early Childhood Caries affects the quality of life of children and is still a problem in Indonesia. Early Childhood Caries (ECC) is strongly connected to parenting style (PS), which is how parents guide their kids and help them develop their character. There are three parenting styles: authoritative, authoritarian, and permissive. Purpose: The impact of PS on the severity of ECC. Methods: 30 students from South Jakarta's Tat Twam Asi Kindergarten and Kalpataru Kindergarten were selected through purposive sampling for this analytical observational study using a cross-sectional design. Collection of ECC data utilizing the def-t index by intraoral examination and …

Rheological Characterisation Of An Optimised Epoxy–Pdadmac Integrated Chemical System For Sand Consolidation, Afif Izwan Abd Hamid, Ismail Mohd Saaid, Nur Asyraf Md Akhir, Latief Riyanto

Platform: A Journal of Engineering

Excessive sand production poses a persistent challenge to the integrity and productivity of oil and gas wells. Previous work demonstrated the effectiveness of an integrated chemical formulation in improving sand consolidation through optimised gelation time, compressive strength, and clay swelling control. The optimised integrated formulation consisted of an epoxy-to-hardener ratio of 2.5:1, 10 wt.% loading of a 3 wt.% aqueous poly(diallyldimethylammonium chloride) (PDADMAC) solution as the clay inhibitor, and 29.55 wt.% xylene. Thus, this study extends the investigation to the rheological behaviour of the optimised formulation, focusing on its injectability, flow properties, and gelation kinetics under reservoir-like conditions. Time-sweep analysis …

Gender Representation In Automotive Safety: The Role Of Female Crash Test Dummies, Gökçe Hilal Yavuz, Emre Arabaci, Ajab Khan Kasi

Platform: A Journal of Engineering

Vehicle testing is conducted to evaluate safety, durability, environmental compliance, and performance. Various tests, such as crash, performance, durability, environmental impact, and chemical safety, are conducted to ensure that vehicles meet regulatory and quality standards. In crash testing, anthropomorphic test devices (ATDs), commonly referred to as dummies, are used to simulate the effects of collisions on the human body and to assess injury risks. These dummies differ in terms of gender representation and design; for example, the Hybrid III model represents an average male, EvaRID represents a female, and WorldSID is used for side-impact evaluations. Anatomical and biomechanical differences between …

A Hybrid Reliability Framework For Spare Part Optimisation Under Uncertainty Of Marine Vessel Systems, Ahmad Fauzi Sagap, Ainul Akmar Mokhtar

Platform: A Journal of Engineering

Effective spare part management relies heavily on accurate reliability assessment. However, in new or complex systems, historical failure data are often limited, making traditional probabilistic reliability models inadequate. This paper proposes a hybrid reliability framework that integrates conventional reliability theory with fuzzy logic to address both aleatory (random)and epistemic (lack of knowledge) uncertainties. The approach combines crisp failure rate estimation using exponential distributions with fuzzy reliability modelling using the triangular fuzzy number (TFN) methodology and fuzzy logic to support dynamic decision-making for a maintenance plan. The degree of membership functions is derived from the TFN and provides the operator with …

Computer Applications In Electrical Engineering: Recent Trends, Future Requirements, And An Educational Review, Hemant Mehar

Platform: A Journal of Engineering

The integration of programming languages into electrical engineering has become increasingly pivotal as the field evolves with technological advancements. This paper explores recent trends in the application of programming languages in electrical engineering, emphasising how they enhance design, simulation, and automation. The main focus is on the use of high-level programming languages for modelling and simulation, and on various algorithm-based ML approaches for optimisation. Additionally, the paper examines future requirements for programming skills in electrical engineering, highlighting the need for continuous adaptation to emerging technologies and interdisciplinary approaches. An educational review is provided to assess current curricula and suggest improvements, …

Examination Of Triple-Pass V-Groove And Parallel-Pass V-Groove, And Finned Absorber Plates Solar Air Heater: A Numerical Study, Arafat Esam Abdullah Abdulmajeed, Afşin Güngör

Platform: A Journal of Engineering

```python text = """The adoption of solar energy and associated large-scale projects is on the rise to address the escalating global energy demand, owing to their cost-effectiveness, environmental friendliness, and status as clean energy sources. The primary objective of the present study is to investigate the performance of parallel-pass solar air heaters (SAHs) equipped with grooved and finned absorbers, as well as the performance of a triple-pass SAH with a grooved absorber plate, through numerical modelling. The absorber in the finned SAH had longitudinal fins on both the top and bottom surfaces. The heat and fluid properties of a parallel-pass …

Social Construction Of Female-Headed Households Participating In Hud Public Housing Programs, Emma Forks

Walden Dissertations and Doctoral Studies

The problem this study addressed involved factors associated with long-term program involvement of female-headed households living in public and vouchered housing. The literature indicated a significant gap regarding the reasons women who received federal housing assistance stayed in government housing. The purpose of this generic qualitative study was to examine the experiences of female-headed households living in public housing and Housing Choice Voucher (HCV) housing in a Central Texas region, specifically to identify the factors that limited their ability to leave these programs. Using Schneider and Ingram’s social construction of target populations theory, the data was collected from eight participants …

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 …