Engineering Commons^™

Comparison Of Outlier Detection Approaches For Compressive Strength Of Cement-Based Mortars, Nara Cangussu, Paula Milheiro-Oliveira, Ana Mafalda Matos, Farhad Aslani, Lino Maia

Research outputs 2022 to 2026

EN 196-1 states that the compressive strength result of testing of standard mortar specimens corresponds to the average of the six individual measurements. If one of the six individual measurements varies more than ±10 % from the average, it must be excluded, and a new average is calculated with the five remaining values. This methodology might be interesting for quality control or characterization of cement; however, it may not be the best approach for research or scientific purposes. Applying EN 196-1 to non-standard cement-based mortars with multiple and even unconventional supplementary cementitious materials may induce even more variation in the …

A Method For Battlefield Situation Information Ontology Construction Based On Top-Down And Bottom-Up Integration, Cong Zhou, Sihang Zhou, Jian Huang, Dong Wang

Journal of System Simulation

Abstract: The construction of the unified expression model of battlefield situational information is challenging due to the complexity of data sources and the significant differences in data structures and expression methods. Ontologies, as semantic conceptual models, are often used to describe concepts, relationships, and attributes within knowledge domains. An ontology construction method for the battlefield situational information domain based on a top-down and bottom-top integration is proposed. The top-down method is used to construct the upper ontology, in which a conceptual hierarchy model with a clear top-down structure is designed to establish the hierarchical relationships and semantic associations. A bottom-up …

A Deep Autoencoder For Electric Double Layer Capacitance Prediction In Electrochemical Sensors, Mason Mcgarrity, Feng Zhao

Electrical and Computer Engineering Faculty Research & Creative Works

This study explores the application of a deep autoencoder neural network to accurately predict the electric double layer capacitance from real-world parameters in binary, asymmetric electrolytes under low concentration conditions. By utilizing a modest simulation-based dataset of just 250 samples, the deep autoencoder neural network model developed in this study effectively predicted the capacitance by learning the critical features and relationships of the electric double layer model and encoding this learned representation into a low-dimensional latent space. From the latent variables, the decoder block of the neural network learned to effectively recreate the high-dimensional input. To enhance the model's robustness, …

10.14.2024 Orsp Connect, Liz Williamson

ORED Newsletter

IBC Changes and Updates

ARPA-H Planning New Funding Opportunity

Equipment Purchasing Training Available

Cross-Track Seabed Imaging And Buried Object Detection With A Multibeam Sonar, Charles W. Holland, Samuel Pinson, Daniel L. Orange, Cody R. Henderson

Electrical and Computer Engineering Faculty Publications and Presentations

What lies underneath the ocean floor is of interest to a wide variety of disciplines. The focus here is imaging the upper tens of meters of material beneath the seafloor. The sub-bottom profiler is a valuable tool to that end, producing a 2-D image in depth below the seafloor and along the track of the ship. Geoscientists and engineers are frequently interested in not only the subseabed beneath the ship but also either side or cross-track of the ship. We show an approach to cross-track imaging using a low-frequency multibeam sub-bottom profiler. The main result is the detection of a …

Lifetimes Of Stable Solutions To The Planar Three-Body Problem, Revealed In Patterns Of Fractal Art, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Working Papers

This preliminary study explores statistical prediction of the lifetimes of apparently stable orbits of three particle masses, mutually attracted by gravity in the planar three body problem. Most orbits eventually break up, commonly in an end state with two of the bodies orbiting each other and moving together in one direction, with the third body moving in the opposite direction. Studies of such escape events led to a novel hypothesis, emerging from the intersection of probability, statistics, chaos, and fractal art. Statistical estimates of a constant probability of breakup per unit time allow prediction of the times of breakup of …

A Concept Of Controlling Grover Diffusion Operator: A New Approach To Solve Arbitrary Boolean-Based Problems, Ali Al-Bayaty, Marek A. Perkowski

Electrical and Computer Engineering Faculty Publications and Presentations

A controlled-diffusion operator for Boolean oracles is designed as a new approach for Grover’s algorithm to search for solutions for arbitrary logical structures of such oracles, since the Grover diffusion operator is not able to find correct solutions for some logical structures of Boolean oracles. We also show that the Phase oracles do not work sometimes correctly using the Grover diffusion operator. Our proposed controlled-diffusion operator relies on the states of output qubit, as the reflection of Boolean decisions from a Boolean oracle without relying on the phase kickback. We prove that on many examples of Boolean and Phase oracles …

Beyond The Checklist: Pilot Education, Aviation Resources, And Health Management Skills, Nancy Smith

Pacific Journal of Health

The research study investigates if pilots find aviation health-related materials provided from training or aviation associations to support their own health needs. A mixed methods convergent parallel design was conducted by sampling 27 pilots within general aviation to assess their utilization of aviation health-related materials, health management skills including self-efficacy and prioritization, as well as their views of implementing particular health topics into aviation training. Results of the study indicate that it is unclear if pilots find aviation health materials useful in managing their health, pilots have a relatively high level of self-efficacy and ability to prioritize one’s health and …

Novel Insights On The Setting Process, Hardened Properties, And Durability Of Sustainable Ultra-High-Performance Seawater Sea Sand Concrete, Wei Zhang, Dawei Ding, Jianxing Sun, Feng Guo, Haibao Feng, Hongyan Ma, Shuxian Hong, Biqin Dong, Dongshuai Hou

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Using seawater and sea sand to prepare concrete could effectively alleviate the shortage of freshwater and river sand resources and promote the sustainable development of concrete. However, the current research on the setting process, hardened properties, and sustainability of ultra-high-performance seawater sea sand concrete (UHPSSC) remain considerably limited. In this paper, the UHPSSC was designed to mitigate the autogenous shrinkage and enhance the sustainability, and the effect of seawater, untreated and desalinated sea sand on the setting process, mechanical properties, durability, and sustainability was explored by various tests. Results show that the abundant ions (e.g., Cl- and SO42-) in seawater …

Towards An Iot-Enabled Digital Earth For Sdgs: The Data Quality Challenge, Msb Syed, Paula Kelly, Paul Stacey, Damon Berry

Articles

Digital Earth (DE), a technology offering real-time visualisation of Earth's processes, has shown promising results in aiding decision-making for a sustainable world, raising awareness about individual impacts on our planet, and supporting the United Nations Sustainable Development Goals (UN SDGs) agenda. However, both DE and SDGs face a common obstacle: Data Quality (DQ). This review investigates the challenge of DQ in the context of DE for SDGs and explores how IoT can address this challenge and extend the reach of DE to support SDGs. Furthermore, the study discusses three core aspects; first, the potential of IoT as a data source …

Durability Investigation Of Ultra-Thin Polyurethane Wearing Course For Asphalt Pavement, Wenguang Wang, Baodong Liu, Dongzhao Jin, Miao Yu, Junsen Zeng

Michigan Tech Publications

In this study, a wear-resistant ultra-thin wear layer was fabricated with polyurethane as an adhesive to investigate its durability for pavement applications. Its road performance was investigated based on indoor tests. First, the abrasion test was performed using a tire–pavement dynamic friction analyzer (TDFA), and the surface elevation information of the wear layer was obtained by laser profile scanning. The relationship between the anti-skid properties of the wear layer and the macro-texture was analyzed. Second, a Fourier infrared spectrometer and scanning electron microscope were employed to analyze the evolution of polyurethane aging properties in the pull-out test and accelerated ultraviolet …

Monte Carlo Calculations Of Target Fragments From Helium And Carbon Ion Interactions With Water, Quazi Muhammad Rashed Nizam, Asif Ahmed, Iftekhar Ahmed, Lembit Sihver

Informatics and Engineering Systems Faculty Publications

When high energetic heavy ions interact with any target, short range, high linear energy transfer (LET) target fragments are produced. These target fragments (TFs) can give a significant dose to the healthy tissue during heavy ion cancer therapy, and when cosmic radiation interacts with astronauts. This paper presents Monte Carlo simulations, using the Particle and Heavy Ion Transport code System (PHITS), to characterize target fragments from reactions of helium and carbon ions with water. The calculated ranges, LET, doses, and production cross sections are presented. It is shown that protons, deuterons, tritons, alpha particles, 3He, 6He, …

Long-Distance Photon-Mediated And Short-Distance Entangling Gates In Three-Qubit Quantum Dot Spin Systems, Nooshin M. Estakhri, Ada Warren, Sophia E. Economou, Edwin Barnes

Engineering Faculty Articles and Research

Superconducting resonator couplers will likely become an essential component in modular semiconductor quantum dot (QD) spin qubit processors, as they help alleviate crosstalk and wiring issues as the number of qubits increases. Here, we focus on a three-qubit system composed of two modules: a two-electron triple QD resonator coupled to a single-electron double QD. Using a combination of analytical techniques and numerical results, we derive an effective Hamiltonian that describes the three-qubit logical subspace and show that it accurately captures the dynamics of the system. We examine the performance of short-range and long-range entangling gates, revealing the effect of a …

Enhancing Human Aging Proteins Detection Based On Bio-Structural Deep Clustering Network, Sondos M. Hammad, Mohamed Talaat Saidahmed, Elsayed A. Sallam, Reda Elbasiony

Journal of Engineering Research

Aging is a major risk factor for numerous chronic diseases and declines in physical and cognitive functions, making it a critical focus of research. Identifying biomarkers that signify biological aging is crucial for developing interventions that can potentially delay age-related diseases. Among these biomarkers, human aging proteins are of significant interest. However, laboratory experiments to discover aging proteins are complex, costly, and time-consuming. Often focusing on single proteins at a time. To address this challenge, we used a clustering algorithm to detect potential human aging proteins. This approach aims to aid biologists in their experimental efforts. Deep clustering, particularly simultaneous …

The Path Of Al-Qanal Street (Al-Khashab Canal) In Maadi Area Between Preservation And Development, Kamal Mahmoud Elgabalawy

Journal of Engineering Research

Preserving and developing the main traffic routes within the areas of distinctive value is an important topic, as they contain buildings and villas with a distinctive architectural style in addition to the distinctive general character. The path of Al-Qanal Street, Al-Khashab Canal, was previously chosen due to its importance, as it is located in Al-Sarayat within the Maadi area of distinctive value. It is located in the heart of Maadi within a classified area with a protection zone (A), which means a maximum protection zone, in addition to the fear of turning the path of Al-Qanal Street into a fast …

Evaluation Of Virtual Distance Learning And Teaching In The Architectural Design Studio Experience Of Professors And Students Of The College Of Architecture And Planning - Qassim University - Kingdom Of Saudi Arabia., Abdulaziz Ibrahim Alhrabi

Journal of Engineering Research

The paper deals with the evaluation of distance learning of the architectural design studio during the Corona pandemic, and the extent to which distance learning and teaching were achieved between the professor and the student. The paper aims to share and evaluate the experience of distance learning and teaching of the architectural design studio, in the College of Architecture and Planning at Qassim University. The research problem is that the Corona virus crisis generates many ideas for educational programs and media, but there is a deficiency in knowledge of many programs that achieve the continuity of the educational process remotely, …

Designing Adaptive Facades Using Biomimicry For Improving Daylighting In Office Building: A Case Study Of Cairo, Egypt, Hosam Abd El-Aziz Amr, Nada Essam

Journal of Engineering Research

The paper explores the use of biomimicry to enhance façade design and improve daylighting performance in office buildings in Cairo, Egypt. By emulating natural processes, adaptive facades were developed to increase energy efficiency and occupant comfort. Initial studies examined biomimicry principles and international case studies of adaptive facades. Simulations of a façade inspired by the Gazania flower's nyctinasty movement showed significant improvements: the area achieving optimal illuminance (300-3000 lux) increased from 24.2% to 37.4%, and Spatial Daylight Autonomy (SDA) has decreased from 82% to 68%. These findings demonstrate biomimicry's effectiveness in addressing daylighting challenges in hot climates. The research underscores …

Mouasla: Integrating Iot And Ai For An Intelligent Trans-Portation Payment System, Hany El-Ghaish Dr., Haitham Darweesh

Journal of Engineering Research

Smart payment systems have emerged as vital components of global public transportation, offering passengers a more efficient and convenient fare payment method. The Mouasla system addresses traditional payment limitations through IoT devices and AI-backed backend services. Features of Mouasla It employs RFID smart card and IoT features from the device to ensure all components such as a card reader function, driver functions, charging units function, and payment are combined with this system alongside a mobile application for quick access backend services. Each passenger dataset is analyzed by an AI-powered backend service to provide insight that can be used to improve …

Mutual Seismic Interaction Between Rigid Pile Inclusions And Surrounding Soft Soil Formation, Mohamed Mohamed Ahmed Abdelmotaal Eng., Ayman Lotfy Fayed Prof., Tamer Mohamed Sorour Associate Prof.

Journal of Engineering Research

This study aims to investigate the mutual interaction between rigid Pile Inclusions (PI) and the surrounding soft formations, such as soft to medium stiff silty Clay. The studied area is located at New Mansoura City, Nile Delta, Egypt, where the soil formation consists of a surface silty Sand layer with a depth of 4m, followed by 15m-thick Soft Clay formation. The third layer is medium dense to dense sand extending to a depth of 40, followed by a deep layer of very dense sand.

The Finite Element Method (FEM) is utilized to simulate this sophisticated seismic geotechnical problem, using PLAXIS-2D …

A Review Of Effective Urban Strategies For Enhancing Pedestrian Thermal Comfort In High-Temperature Urban Environments, Norhan Mahmoud Mohamed Ibrahim Ali, Ahmed H. Aboulsaadat, Ingy I. El-Darwish, Ayman Gamal Eldin Ahmed Abdel Tawab

Journal of Engineering Research

Abstract- Pedestrian well-being is significantly influenced by the feeling of being thermally comfortable, and enhancing this comfort level contributes to the overall walkability. This study extensively compares the impact of different approaches in enhancing thermal comfort for pedestrians. The evaluation encompasses both fieldwork observations and computer simulations results. The investigated strategies include the urban geometry (arrangement, orientation and shape of urban structures), vegetation, solar-reflective materials, and water features. These strategies are considered the most effective means for improving outdoor thermal comfort. The findings reveal that the key climatic factors influencing outdoor thermal comfort in a microclimate are mean radiant temperature, …

Investigating The Influence Of Confinement Stress And Concrete Type On The Performance Of Precast Segmental Dry Shear-Keyed Joints, Khaled Ramzy, Mahmoud Ahmed Abdel Aziz Mohammed

Journal of Engineering Research

This investigative research delves into the correlation between dry joint ultimate load and varied applied confinement stress levels – low at 2 MPa, moderate at 4 MPa, and high at 6 MPa – within structural joints. The focus is on diverse configurations of shear key quantities (single, dual, and triple shear keys) within these joints. Additionally, an examination was conducted on the influence of concrete types –Normal Strength Concrete (NSC) rated at 30 MPa, High Strength Concrete (HSC) at 60 MPa, and Ultra-High Strength Concrete (UHSC) at 120 MPa – alongside the aforementioned confinement stress levels on load capacity. The …

Joining Wood Plastic Composites Using A New Self-Reacting Friction Stir Toolset – A Comparative Study, Mohamed Moustafa Elmeligy Mr, Ahmed Elkassas, Ammar H. Elsheikh

Journal of Engineering Research

Wood-plastic composite (WPC) is an environmentally friendly material that promotes the recycling of wood and plastic waste. However, there is a notable lack of research on methods for joining these materials. This study introduces an innovative approach using a uniquely designed self-reacting friction stir toolset specifically for WPC joining. The performance of this new toolset is evaluated against prior research that employed a hot-shoe friction stir welding toolset on a WPC with a different composition. The study focuses on key parameters such as revolutions per welding line (RPWL), rotational speed, and welding speed, emphasizing their critical impact on the quality …

Optimal Site Layout Planning For Construction Projects Over Waterways, Rana M. Azzam, Nashwa Mohamed Yossef Prof, Adel I. Eldosouky Prof

Journal of Engineering Research

Construction site layout planning is an important part of a project's success. An effective construction layout plan can enhance the performance of the construction process by improving productivity, ensuring safety, and reducing costs. Given the importance of bridges over a waterway and the lack of interest in previous research for planning a construction site over a waterway. This paper concentrates on the problems of site planning for such projects, including the problem of limited site space. The study indicated that constructing an offshore terminal is one of the primary requirements for projects with limited space being carried out on a …

Decision-Making In Diagnosing Heart Failure Problems Using Dual Hesitant Fuzzy Sets, Manar Mohamed Omran, Reham Abdel-Aziz Abo-Khadra

Journal of Engineering Research

In recent decades, several types of sets, such as fuzzy sets, interval-valued fuzzy sets, intuitionistic fuzzy sets, interval-valued intuitionistic fuzzy sets, type 2 fuzzy sets, type n fuzzy sets, and hesitant fuzzy sets, have been introduced and investigated widely. In this paper, we propose dual hesitant fuzzy sets (DHFSs), which encompass fuzzy sets, intuitionistic fuzzy sets, hesitant fuzzy sets, and fuzzy multi-sets as special cases. Then we investigate the basic operations and properties of DHFSs. We also discuss the relationships among the sets mentioned above, and then propose an extension principle of DHFSs. Additionally, we give an example to illustrate …

Influence Of Concrete Jacketing On The Performance Of Steel Columns Under Blast Induced Progressive Collapse, Hanan Eltobgy Prof., Mohamed Saeed Refaey Dr., Mohamed Ahmed Aboshok Dr., Ahmed Emadel-Din Abdel-Aal Eng.

Journal of Engineering Research

This study investigates the influence of concrete jacketing on the performance of steel columns subjected to blast loading, which can lead to progressive collapse. Using Finite Element Method (FEM) simulations, the research evaluates concrete-encased steel columns with different concrete cover thicknesses to measure their resistance to lateral displacements induced by blasts. Findings reveal that increasing the thickness of the concrete cover markedly improves the column's ability to withstand such loads. The study also highlights that steel has better energy dissipation properties than concrete. It examines how the combined challenges of progressive collapse and blast loading influence the overall structural response …

Numerical Study Of Flow Control On An Asymmetric Beveled Trailing Edge, M. M. Mosallem, Zienab A. Ahmed

Journal of Engineering Research

The current research aims to numerically study the effect of inserting a small rod into the wake of an asymmetric beveled trailing edge on the hydrodynamic forces and wake structure. The test model used in this study is a blunt-faced flat plate of thickness H and having an asymmetrical 60° beveled trailing edge. A control rod with diameter d = 0.2 H was inserted into two different locations (Location (1); x/H = 0.18, y/H = 1.0) and (Location (2); x/H = 0.28, y/H = 0.9) behind the trailing edge. Unsteady 2D numerical simulation was performed at Reynolds number, …

Characterization Of Wood Plastic Composites Made Of Rice Straw And Recycled Low-Density Polyethylene, Waleed Mohamed Hassona Dr., Ahmed Elkassas, Nader Zaafarani

Journal of Engineering Research

In this work, the physical and mechanical properties of a fabricated wood-plastic composite (WPC) in accordance with the internationally recognized standard are investigated. The wood-plastic composite is made from recycled low-density polyethylene and mechanically processed rice straw fibers by using a specially designed extrusion machine. From the physical test, it was found that the newly developed WPC has low water absorption and thickness swelling compared to the standard limits. The mechanical tests revealed an improvement of the modulus of rupture and modulus of elasticity by the increase of fiber content to 65%. The highest recorded values of the modulus of …

Numerical Study On Enhancing The Geotechnical Behavior Of Strip Footings On Oil-Contaminated Sand Using Stone Columns, Ahmad Nasr, Waseim Azzam, Mohamed Ahmed Mahmoud Abdelrehem

Journal of Engineering Research

Ground improvement techniques are frequently employed in construction sites characterized by weak soil conditions that may result in suboptimal performance. The use of ordinary and encased stone columns aims to enhance endurance, shear strength, and soil hardness, thereby mitigating settlement issues and expediting the consolidation of contaminated sand soils. In this research, a comprehensive investigation involving 74 cases was conducted to assess the behavior of both ordinary stone columns and encased stone columns under strip footing in contaminated sand subgrade. The objective was to discern the impact and characteristics of encapsulation in comparison to encapsulated stone columns, employing a Finite …

A Parallel Methodology For Early Fake News Detection Based On Hybrid Features On Social Media, Asmaa Mohemed Elsaieed Dr

Journal of Engineering Research

The increased use of social media platforms has made it easier to publish and distribute news items, but it has also opened up new opportunities for distributing fake news. Fake news is information that has been written with the goal of misleading or deceiving readers. As a result, there is a need for efficient false news identification tools where the information can be gathered from the text of posts or from publicly available social data (such as user information or feedback on articles or the social network). The detection of fake news in its early stages is a major challenge. …

The Effect Of Road Profile On The Performance Of A Full Car Suspension Model Ride Comfort., Bassem Nashaat Zakher Assistant Professor, Ibrahim Mahmoud El Fahham Professor, Mostafa Mohamed Mohamed Associated Professor, Mohamed Abdelfattah Elgohary Associated Professor

Journal of Engineering Research

A full-car eight-degrees of freedom model is used to investigate the dynamic response of vehicles subjected to different road profiles on ride comfort. Two road profiles are used in this study, which include the effect of the vehicle mass and moment of inertia on the vehicle ride comfort. In the proposed vehicle model, the masses of the tires, damping, and stiffness are variables. Also, the suspension parameters and the location of the centre of gravity of the vehicle body can be changed. The Lumped Mechanical System interface of COMSOL Multiphysics is used to model the tires, the suspension system, and …