Digital Commons Network^™

Anthropology Of Enabling People With Hearing Difficulties In Pub-Lic Entertainment Spaces: "A Case Study Of The Nile Corniche In Minia City", Amna Waz Amgad

Journal of Engineering Research

God compensates a person who suffers from a hearing defect by allowing that sense to give way to the part of his perception that it was expected to occupy, stimulating another sense, or by requiring him to interact with his society in other ways to compensate for the effects of his defect. As a result, the research problem was the need to develop open public entertainment spaces that are more welcoming to people who have hearing difficulties. Each individual can enjoy the space in accordance with his or her own needs, thereby implementing the Egyptian Constitution's principle of equality among …

Experimental And Analytical Study On Shear Bond Behaviour Of Lightweight Concrete Composite Deck Slab With Shear Connectors, Mohaned Mohy El-Deen Hassan, Khaled Abdullah Gharib, Hanan Hussain Altobgy

Journal of Engineering Research

This study investigates the bond strength between lightweight concrete and steel elements in composite deck slabs, with a focus on enhancing bond performance through the use of shear connectors. The primary objective was to improve the interface behavior between lightweight concrete and steel corrugated sheets by introducing shear connectors between the composite slab and supporting steel beams. Both experimental and analytical methods were employed. Experimentally, twelve lightweight concrete specimens were fabricated and divided into two groups: one without shear connectors and the other with shear connectors. Each group was further classified into specimens with long and short spans. These specimens …

Effects Of Processing Parameters On Kerf Cutting Quality Following Abrasive Waterjet Slotting Of Ti-6al-4v/Cfrp/Al7075 Stacks, Abeer Eisa, Abdulaziz Elshinawi, Mohamed Fattouh

Journal of Engineering Research

Abrasive water jet machining (AWJM) presents a viable substitute to traditional machining methods for cutting straight kerfs in Ti-6Al-4V/CFRP/Al7075 composite stacks. This study investigated the influences of various process settings, namely the hydraulic pressure (P), traverse speed (V), and stand-off distance (SOD) on kerf characteristics, including the kerf geometry (W_k), taper angle (θ_K), roughness (R_a), and the material removal (MRR). The metal plates, including Ti-6Al-4V and Al7075, exhibited a positive taper angle, whereas the CFRP composite plate revealed a negative taper angle across …

Enhancing Efficiency In Cyclone Separators: Insights From Triangular Finned Structures And Fluid Dynamics Analysis, Ibrahim M. Mohamed, Yasser El-Shaer, Khairy Elsayed, Mohamed Aly Ibrahim

Journal of Engineering Research

Cyclone separators play a pivotal role in removing particulate matter from gas streams. These elegant devices find applications across diverse industries, including cement production, petroleum refineries, and food processing. This computational study focuses on the effects of adding fined surfaces to the cylindrical part of cyclone separators on the flow field and the performance parameters. Different fins are used at different depths, namely, 0.004 m, 0.008 m, 0.01 m, different pitches, namely, 0.025 m, 0.04 m, 0.05 m and different helix lengths, namely, 0.2 m, 0.25 m, 0.3 m. The results indicated that optimal fin adhesion reduces the pressure drop, …

Compact Dual-Band Semicircular Slot Mimo Antenna Design For 5g Sub-6 Ghz Applications, Reham Wageh Abd El Salam Reham W., Amr H. Hussein Prof.Dr., Mustafa M. Abd Elnaby Prof. Dr., Hussein E. Seleem

Journal of Engineering Research

This paper presents a novel compact semi-circular slot (SCS) 4 × 4 MIMO antenna specifically designed for 5G sub-6 GHz applications, achieving significant isolation without requiring extra decoupling components. The antenna features four symmetric, orthogonally arranged elements, each sized at 42×42 .It includes a U-shaped radiating patch, which is fed by a 50-ohm microstrip line on the top surface of the substrate. A semicircle-defected ground structure (DGS) is etched on the underside to improve bandwidth and reduce overall size. To enable dual-band functionality, a T-shaped stub is incorporated into the U-shaped patch, allowing for adjustable resonant frequencies. The higher frequency …

Simultaneous Optimal Sizing And Placement Of Electrical Vehicles Charging Stations And Distributed Generation Units In Electrical Distribution Networks Using Abc Technique, Abdelazim M. Salem Dr., Nora M. El-Ayaat, Ismail M. Hafez Prof., Adel Abou El Ela Prof.

Journal of Engineering Research

The continuous increment in the utilization of electric vehicles (EV’s) that represent new loads on the electrical distribution networks. The distributed generators (DG’s) have been used in the distribution networks as renewable energy sources (RES) with the main electrical distribution network for supplying significant amount of the total connected loads. The using of DG’s lead to reduce the electrical active power losses and improving the voltage profile on the distribution network. A well-planned and efficient EV’s charging infrastructure is required for effective electric mobility. This paper presents a planning study for supplying up to four EVCS’s, each one increases the …

Enhancement Of Punching Phear Strength Of Two-Way Slabs Using Headed Steel Shear Studs, Hazem Mohamed Farouk Elbakry Sr, Tareq Ibrahim Ebido Sr, Farid Mohamed Morgan Jr

Journal of Engineering Research

Abstract- Shear reinforcement systems contribute in enhancing the punching shear strength of reinforced concrete slab-column connections. An experimental study has been conducted to investigate the efficiency of using headed shear studs to improve the strength and ductility of slab-column connections subjected to punching shear. The study involved seven reinforced concrete two-way slab specimens having plan dimensions of 1100mm×1100mm, which were experimentally tested under square patch loading. The considered parameters were the spacing, orientation and layout arrangement of the shear studs. The study showed that the punching shear strength of specimens with headed shear studs was improved by up to 37.2% …

A Comparative Lca Of Light Gauge Steel And Traditional Masonry For Dwellings, Youssef Elkhayat

Journal of Engineering Research

Recently, it is evident that the light gauge steel modular dwellings are currently considered as a solution to enable mass home creation in Ireland. However, this type of structure is not considered for its sustainability or embodied carbon (EC) qualities. Life cycle assessment of this new method versus the traditional method of construction is a must with the aim of developing the innovation in construction methods. This paper compares the EC of a light gauge steel (LGS) modular dwelling against a traditional masonry (TM) dwelling to gain insight into the sustainability quality of this new structure typology and how low …

Preliminary Spectral Matching Analysis Of The Rod El-Farag Region In Cairo, Egypt, Ahmed F. Youssef, Amr Z. Elkady, Ayman A. Seleemah

Journal of Engineering Research

Abstract: Earthquake engineering assessments are essential for evaluating the seismic response of structures. Nonlinear dynamic analysis is a highly effective method for evaluating seismic re-sponse, considering the complex, three-dimensional, and dynamic behaviour of structures during earthquakes. The complexity of seismic damage assessment arises from ground motion and struc-tural modelling parameters. Spectral matching is a key method in seismic codes and aids in selecting earthquake accelerograms for performance- and force-based designs. Spectrum-matched data is increasingly used to estimate nonlinear structural responses. Spec-tral matching utilizes the wavelet adjustments introduced by Abra-hamson (1992) and refined by Hancock et al. (2006) to adjust earth-quake …

Dwellings Occupant Behaviour And Electric Heating Consumption: Sensitivity Analysis And Potential Savings, Youssef Elkhayat

Journal of Engineering Research

A building's heating consumption is affected by a lot of things, including the weather, the building's envelope, and the heating system. Furthermore, a crucial component impacting dwelling electrical consumption is the behaviour of occupants. Analysing the impact of occupant behaviour on electric heating consumption in dwellings located in temperate oceanic climates is the focus of this study. By surveying the existing literature on the topics of building energy simulation and occupant behaviour, this study was able to determine the strengths and weaknesses of earlier investigations, as well as the research technique. A case study of a semi-detached house in Galway, …

Using Nanotechnology To Achieve Sustainability In Interior Residential Spaces, Neveen Youssef Azmy, Esraa Tarek Abu-El Azm, Ahmed Ahmed Rizk, Walaa Abou El-Haggag Mehanna

Journal of Engineering Research

Major scientific and technological developments characterize the present time. One notable achievement is the nano revolution, which has greatly influenced various areas of life Nanotechnology is characterized by using very small particles of materials, either alone or by processing them to create new materials with remarkable properties. Hence, nanotechnology offers promising economic solutions and products to achieve a reliable and sustainable environment. Architecture has great potential to benefit from this technology to achieve sustainability and improve indoor environment quality. Given the proliferation of residential buildings in urban areas, where people spend most of their time, it is necessary to integrate …

Indoor Localization With Ensemble Machine Learning Via Visible Light Communication Channels, Alzahraa M. Ghonim, Wessam M. Salama

Journal of Engineering Research

An indoor localization system based on received signal strength, visible light communication (VLC) and several machine learning approaches is proposed in this paper. Our proposed framework is divided into two strategies. The first one is consisting of gathering our dataset based on MATLAB software to create indoor VLC channel model. While the second phase is depending on training the gained dataset using ensemble machine learning models. Specifically, random forest, decision tree and gradient boosting models. In order to evaluate the robustness of the proposed framework, several evaluation metrics are applied, specifically, training time, testing time, classification accuracy (CA), area under …

Challenges Of Sustainable Infrastructure In Egypt For Contractors, Consultants, And Owners, Abdelrahman Ali Gaber Eng., Mohammed Elsayed Elsharkawy Assis. Prof., Adel Ibrahim Eldosouky Prof.

Journal of Engineering Research

This research investigates the multifaceted challenges and opportunities for implementing sustainable infrastructure in Egypt from the perspectives of key stakeholders—contractors, consultants, and owners. It uses structured questionnaires to draw on a comprehensive literature review and a field study. These questionnaires were distributed to experts across three vital sectors: roads and bridges, water and sewage networks, and ports and shore protection. A total of 95 participants completed the survey, surpassing the statistically required sample size of 61, calculated using Kish's 1965 formula, thereby enhancing the robustness of the findings. Key barriers identified include high initial costs, insufficient operational funding, lack of …

Evaluating Lidar Technology In Iphone Mobiles For 2d Mapping Applications, Nasr Mohammady Saba, Salem Salama Saleh

Journal of Engineering Research

Abstract- LiDAR (Light Detection and Ranging) technology has revolutionized mapping applications, offering enhanced precision and accuracy in spatial data collection. The integration of LiDAR technology in the latest iPhone models, beginning with the iPhone 12 Pro, has introduced new capabilities for 2D data measurement and plan creation directly on the mobile device. The iPhone 12 Pro and 12 Pro Max models support LiDAR techniques within their mobile phone cameras, enhancing the performance of various applications such as Measurements and Photos. LiDAR operates by emitting pulsed light waves into the surrounding space, which bounce off nearby objects and return to the …

A Value-Based Hbim Framework For Adaptive Reuse Of Heritage Buildings: A Case Study Of Bayt Yakan, Ayman Samy, Alaa E. El-Habashi, Al-Moatazbellah Al-Behiery

Journal of Engineering Research

This paper presents a value-based Heritage Building Information Modeling (HBIM) framework for assessing the adaptive reuse of heritage buildings. The framework integrates key heritage values criteria -authenticity, integrity, significance, and adaptability- into HBIM, allowing for structured decision-making that balances heritage preservation with contemporary operation. Using Multi-Criteria Decision Analysis (MCDA), different adaptive reuse scenarios are evaluated in HBIM Environment to ensure that interventions respect the building's authenticity, integrity, and significance while meeting sustainable operational needs. The case study focuses on Bayt Yakan, a 17th-century heritage building in Cairo, where three adaptive reuse scenarios—continued use as a library, conversion into a hotel …

Experimental And Numerical Investigation For Optimum Design Of Hydraulic Steel Gates, Basma Hassan Mohamed Eng, Ahmed Mohamed Anwer Dr, Hanan Eltobgy Prof., Gamal Helmy El-Saeed Prof

Journal of Engineering Research

Conventionally, steel gates are widely used in hydraulic structures for their superior mechanical properties in sustaining hydrostatic pressure. Maintenance and operational costs should be considered while studying the feasibility of these gates. In the current research, three prototype steel gates with different configurations were prepared and examined experimentally. The three gates have the same surface dimensions of (width x height) equal to (1.0 x 1.25 m). The first steel gate represents a typical traditional gate made of skin plate and stiffened laterally using standard steel channels and will be kept for comparison. The second gate represents a standard thicker plate …

Performance And Emissions Characteristics Of Multi-Cylinder Direct Injection Diesel Engine Fuelled With Diesel/Biodiesel And Toluene Additives, Hagar Alm-Eldin Bastawissi, Medhat Elkelawy Prof. Dr. Eng., Mohammed Osama Elsamadony Dr. Eng., Moustafa Ghazaly Eng.

Journal of Engineering Research

This study explores the impact of using a diesel, biodiesel, and toluene additive fuel blend in a multi-cylinder direct injection diesel engine, focusing on both performance and emissions characteristics. Biodiesel, made from renewable sources like vegetable oils, is often added to diesel to reduce reliance on fossil fuels and improve combustion due to its higher oxygen content. In this work, a 45% biodiesel blend (B45) led to significant reductions in particulate matter (PM) emissions by up to 40% compared to conventional diesel. Additionally, carbon monoxide (CO) and hydrocarbon (HC) emissions decreased by up to 30% and 25%, respectively, due to …

Effect Of Dual-Fuelled Cng And Gasoline On Spark Ignition Engine Performance And Emissions Behaviors At Different Loads, Medhat Elkelawy Prof. Dr, Eng., M.M. Bassuoni Prof. Dr., Hagar Alm-Eldin Bastawissi, Saied I. Haiba Eng.

Journal of Engineering Research

Engine emissions are one of numerous factors that have detrimentally affected the environment, such as global warming, which is the result of growing exhaust gases, practically carbon dioxide (CO2). These emissions have substantially influenced researchers to develop strategic initiatives to minimize the carbon contents of fuels. The purpose of this research is to investigate the characteristics of internal combustion (SI) engines fueled by gasoline and compressed natural gas (CNG) blends. The experiments are performed using a HONDA 4-stroke, single-cylinder, and air-cooled SI engine. Five CNG concentrations are evaluated, the concentrations range from 0.5 to 2.5 L/min with a 0.5 L/min …

A Quantitative Analysis Of The Commercial-Additive Effects On Diesel Engine Combustion And Emissions Characteristics, Medhat Elkelawy Prof. Dr. Eng., Hagar Alm-Eldin Bastawissi Prof. Dr. Eng., E. A. El Shenawy Prof. Dr., Mahmoud Mohamed Soliman Mahmoud Mohamed Mahmoud Soliman

Journal of Engineering Research

Petroleum fuel prices fluctuate in response to global political and economic issues. Government regulations should be followed when it comes to engine emissions, as these dangerous pollutants have a negative impact on the environment. One such effect is global warming, which raises global temperatures. The purpose of this study is to develop the additives for use as a fuel mix with diesel fuel, which will be used to feed the diesel engine of a single cylinder, four strokes. The engine will be tested experimentally with varying loads at fixed speed of 1500 rpm, using blends of [(5% PRETSONE additive + …

Design And Implementation Of A Low-Cost Educa-Tional Robot For Engineering Curriculums, Diana Refaat Henry Jacob, Ashraf Mohamed Hafez, Mohamed Tarek Elawa

Journal of Engineering Research

The role of educational robots is becoming increasingly important. Many commercial educational robots differ in their abilities and price. In general, the cost of these robots presents the main cause of their limited use in the teaching process, especially in countries with limited financial resources. This work attempts to solve this problem by designing and implementing an educational robot with a limited budget. The robot was initially intended to serve higher education students' needs, especially in engineering curriculums but can be extended to other application areas. This work presents robot hardware functional blocks, mechanical struc-ture design, and 3D printing implementation. …

A Standardized Approach For Measuring The Quality Of Urban Life In New Urban Communities Case Study: New Damietta City, Egypt, Raghda Abdelkader Mahmoud, Sherif Ahmed Sheta, Esraa Mohamed El-Azab, Ahmed Mohamed Thabet Alieldin

Journal of Engineering Research

New urban communities aim to achieve a clear societal vision through the promotion of urban development and improving their efficiency to suit human life with its various requirements. Therefore, the quality of life standards can be adopted to reflect their indicators positively on individuals and communities under their organizational, development strategies, and development plans that are leading to the Egyptian society’s prosperity. In this context, the aim of the research is to investigate and analyse the quality of urban life with the identification of its effective and efficient indicators for the study area. Furthermore, the research intends to provide …

The Design Studio Dilemma The “Slicing Method”, Yasser Osman El Gammal Associate Professor Dr.

Journal of Engineering Research

The design studio presents a multifaceted challenge due to the absence of a direct teaching approach, relying heavily on the teacher's expertise, design acumen, and pace. Furthermore, much of the existing literature on design studio methods tends to be philosophical or opinion-based, lacking practical solutions for ongoing challenges in this domain. While it's easy for scholars to theorize, offering comprehensive procedures to address design studio issues proves considerably more difficult. There's no unanimous agreement on the topic; most design studio models are based on individual opinions as scholars and practitioners view the topic from different angles, developing their own perspectives. …

A Greening The Diesel: Vegetable Oil Biodiesel Blends For Cleaner Emissions And Improved Direct Injection Diesel Engine Performance, Medhat Elkelawy Prof. Dr, Eng., Hagar Alm-Eldin Bastawissi, E. A. El Shenawy Prof. Dr., Mustafa Mohamed Ouda

Journal of Engineering Research

In this study, we conducted comprehensive experiments to assess and compare the performance of pure diesel fuel against biodiesel produced from corn oil in various blend ratios (15/85, 30/70, 45/55, and 60/40) in a conventional four-stroke, direct-injection diesel engine, fuel is injected directly into the combustion chamber at the end of the compression stroke, allowing for efficient combustion and power generation over four distinct phases: intake, compression, power, and exhaust. Each fuel blend was tested at an engine speed of 16,000 rpm across different load conditions (low, medium, and high). Key performance metrics, including volumetric fuel consumption, exhaust smoke, and …

Optimizing And Validation Of Sustainable Uhpc With Waste Glass Powder Utilizing Modified Particle Packing Approach And Response Surface Methodology, Mohamed Taman, Elsaid Maaty, Alaa Mehrez, Ahmed Kamal Isaac

Journal of Engineering Research

The current study explores the potential of utilizing Waste glass powder (WGP) as an alternative to cement in the development of sustainable eco-friendly Ultra-high-performance concrete (UHPC). UHPC mixtures underwent optimization through the application of a Modified Andreasen and Andersen (MAA) particle packing model, resulting in a reduction of cement content from 900 to 800 kg/m³. Six mixes were cast, with varying levels of cement replacement ratios with WGP up to 50%. The evaluation focuses on the flowability, dry density, and mechanical properties of UHPC at different ages using normal curing. A statistical model utilizing response surface methodology (RSM) …

Techniques For Controlling Saltwater Intrusion In Coastal Aquifers, Mohamed Elsayed Thabet, Ibrahim Mohamed Rashwan, Asaad Matter Armanuos, Walaa Abdullah Asaar

Journal of Engineering Research

Groundwater is a significant freshwater source due to rising water demand for agriculture, industry, rapid population growth, and home usage; however, coastal groundwater is at risk of pollution from seawater intrusion due to intensive pumping.

Heavy extraction of groundwater to meet rising demands has resulted in lower groundwater tables and less seaward freshwater flow. As a result, saltwater spreads further inland, threatening fresh groundwater supplies. Saltwater intrusion refers to the introduction of saltwater into an aquifer system. Around the world, there are several coastal and deltaic regions in which seawater intrusion occurs. Underground water supplies are made worthless when seawater …

Preserving Sunken Granite With Olive Oil For Sustainable Underwater Museums, Ahmed Gelany, Asmaa Ibrahim, Omnia Mohamed, Somaya Mabrouk, Rahma Alaraby, Shahd Abdalmajeed, Wessam Turkey, Nada Shokr, Usama Konbr

Journal of Engineering Research

This study addresses the crucial role of heritage preservation in sustainable urban development, as emphasized by the Egyptian National Agenda 2030. Focusing on the challenges of preserving sunken ancient Egyptian granite monuments in Aboukir Bay, this study investigates the potential of olive oil, a natural, bio-based material, as a sustainable in-situ preservative. Granite samples treated with olive oil were subjected to simulated marine conditions and evaluated using compression teas sts, X-ray diffraction (XRD), and scanning electron microscopy (SEM). Results demonstrated that olive oil effectively inhibited water absorption and biocolonization, mimicking the lotus effect, and increased the fracture loading of granite …

Evaluating Energy Efficiency And Thermal Performance In Egypt’S Social Housing: Climate-Responsive Design And Material Impact In Hot Desert Environments, Ahmed M. Hanafi, Mohamed A. Moawed, Osama E. Abdullatif

Journal of Engineering Research

As Egypt's urban areas expand rapidly, the demand for energy-efficient, affordable housing in extreme hot desert climates has become increasingly urgent. This study investigates the energy efficiency and thermal performance of Egypt’s Social Housing Project, with a focus on residential building in New Aswan City, where summer temperatures frequently exceed 45°C. Employing a validated energy model, this research simulates annual energy consumption for the building, which comprises 24 residential units, each approximately 86 m². The model integrates realistic occupancy schedules, region-specific weather data, and common household behavior patterns to closely reflect actual energy usage. Findings indicate a high alignment between …

Gps External Load Metric Data And Game Performance In Ncaa Division I Women’S Lacrosse Athletes: A Longitudinal Study, Rachel M. Lifson, Xavier Smith, Ernest Rimer, Andreas Stamatis

International Journal of Exercise Science

International Journal of Exercise Science 18(8): 130-146, 2025. This study investigates the relationship between GPS-derived external load metrics and game performance (win/loss) in NCAA Division I women’s lacrosse athletes. Utilizing data from three seasons (2022-2024), the study analyzed 1,687 observations from 54 players to identify key performance indicators correlating with game outcomes. GPS metrics including Total Distance (TD), High-Speed Distance (HSD), Very High-Speed Efforts (VHSE), Total Player Load (TPL), High Inertial Movement Analysis (High IMAs), and Total Acceleration Load (TAL) were assessed. Multivariate logistic regression results indicate that VHSE is the most significant predictor of game success, with VHSE showing …

A Comparison Of External Loads In Division Iii Men's Lacrosse Between High Competition Matches And Low Competition Matches, Patrick M. Moore, Thomas G. Bowman, Yasmine I. Jones, Price Blair, Sean M. Collins

International Journal of Exercise Science

International Journal of Exercise Science 18(3): 158-169, 2025. Lacrosse is an open-field, invasion sport with limited knowledge of the physiological demands of gameplay at the Division III level. This study aimed to investigate the external loads of Division III men’s lacrosse players during NCAA season games. Comparisons were made between the external loads placed on the athletes in high competition versus those placed on the athletes in low competition matches. High competition matches were defined as matches against teams that qualified for the NCAA tournament whereas low competition matches included teams that did not meet high competition requirements. The dependent …

Comparison Of Virtual Vs. Traditional Cycling Exercise On Perceived Duration And Exercise Enjoyment: A Pilot Study, Kyle W. Reason, Lauren G. Killen, T. Scott Lyons, Jean A. Helm Allen, Matt Green

International Journal of Exercise Science

International Journal of Exercise Science 18(2): 147-157, 2025. Participating in regular physical activity has been shown to increases one’s quality of life. Individuals may choose not to participate in regular physical activity because of a perceived lack of time and enjoyment. With the potential of these barriers to decrease exercise adherence, the purpose of this study was to compare perceived exercise duration and enjoyment between a virtually interactive stationary bike and a clamped workload on a standard non-interactive stationary bike. Thirteen active participants completed a VO₂ peak test and four counterbalanced trials (two 20-min, two 40-min) with one trial …