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Hydrological Study Of Groundwater And Its Appropriateness For Irrigation, Karim B H, Hussein S Elsharkawy Oct 2023

Hydrological Study Of Groundwater And Its Appropriateness For Irrigation, Karim B H, Hussein S Elsharkawy

Journal of Engineering Research

Irrigation in most countries represents the largest share of all water use. Groundwater is the main water resource after the water of the Nile River in Egypt. The water situation in the future is not optimistic due to the economic development, the increase in population growth and the increase in the agricultural area, especially after the completion of the construction of Ethiopian Renaissance Dam, so suitable alternatives must be provided for irrigation water. This paper presents a hydrological study on groundwater for use in irrigation in Assiut, Upper Egypt, so that alternatives can be provided to the Nile River for …

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Multinomial Logit Utility Model For Tanta City Transportation System Considering Ridesharing Mode, Ahmed Mohamed Elkafoury, Akram Elsaied Mostafa, Hafez Abbas Afify, Islam Mahmoud Aboelnaga Oct 2023

Multinomial Logit Utility Model For Tanta City Transportation System Considering Ridesharing Mode, Ahmed Mohamed Elkafoury, Akram Elsaied Mostafa, Hafez Abbas Afify, Islam Mahmoud Aboelnaga

Journal of Engineering Research

Recently, ridesharing has been noticed as an effective and sustainable mode of transport. In which, each passenger carries out a journey that benefits travelers and society greatly, such as reducing travel costs, reducing journey times, relieving road traffic congestions, preserving fuel and reducing air pollution. While the importance and efficiency of ridesharing, ridesharing among travelers has not been commonly utilized. This paper introduces an upgraded disaggregated utility model for a mode choice step in the four-step traffic demand model for transport of passengers in Tanta city - Gharbiya governorate. For the first time, the analysis in this paper includes ridesharing …

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Study Of Unconventional Alternatives To Vertical Breakwater, Karim B H, Mohamed Ibrahim Oct 2023

Study Of Unconventional Alternatives To Vertical Breakwater, Karim B H, Mohamed Ibrahim

Journal of Engineering Research

The main objective of the breakwaters is to protect the port, the beach or the beach facilities from strong waves and storms, as they help to establish calm inside the port and thus achieve safety for ships, and ease of operation. This research aims to present study unconventional alternatives to vertical breakwater. In this study, two different models of vertical wave barriers implemented were chosen for their study and evaluation of the hydrodynamic performance. The first model is a vertical wall with circular slots and the second model is a vertical wall with square slots. A comparison was made between …

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Behaviour Of Laterally Anchored Retaining System In Loose Sand Soil, Aml Elbahkery, Mostafa Alsawwaf, Ashraf Nazir, Wasiem R. Azzam Oct 2023

Behaviour Of Laterally Anchored Retaining System In Loose Sand Soil, Aml Elbahkery, Mostafa Alsawwaf, Ashraf Nazir, Wasiem R. Azzam

Journal of Engineering Research

One of the earliest earth retention technologies used in civil engineering projects is sheet pile walls. Therefore, in this work, a numerical analysis using Plaxis 2D was performed to investigate the behaviour of laterally anchored retaining system in sandy soil, focusing on the anchor force, lateral displacement, and maximum bending moment. The effects of anchor location and number on wall and soil deformations were investigated for various wall heights. When anchored-sheet-piles were used instead of cantilever sheet piles, the results showed a significant reduction in both wall deformation and bending moment specially at high dredging levels. In addition, while having …

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Vibration Control For A Coupled Pitch- Roll Ship Model Via A Negative Cubic Velocity Feedback Control, Y. A. Amer, Taher A. Bahnasy, Ashraf M. Elmhalawy Oct 2023

Vibration Control For A Coupled Pitch- Roll Ship Model Via A Negative Cubic Velocity Feedback Control, Y. A. Amer, Taher A. Bahnasy, Ashraf M. Elmhalawy

Journal of Engineering Research

One of the most essential ship reactions to waves is roll motion. Due to the intricacy of ship wave interactions and their sensitivity, predicting such a reaction is extremely challenging. Because vibration motion is an undesirable occurrence, it must be removed, decreased, or controlled. A coupled Pitch- roll ship model with negative cubic velocity feedback control subjected to parametric excitations is premeditated and solved in this paper. The method of multiple time scales is applied to scrutinize the response of the two modes of the system neighbouring the simultaneous sub-harmonic, and internal resonance situation. Besides, the steady-state solution is determined …

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Shear Strength Characteristics Of Cemented Clayey Sand Soil, Mona Hossien Bayoumy, Mostafa Alsawwaf, Ahmed Mohamed Nasr Oct 2023

Shear Strength Characteristics Of Cemented Clayey Sand Soil, Mona Hossien Bayoumy, Mostafa Alsawwaf, Ahmed Mohamed Nasr

Journal of Engineering Research

Several techniques of soil stabilization are available to improve the behavior of many types of soil. The addition of cement to soils have proved a significant effect on the geotechnical properties of treated soils. In this study, an artificial clayey sand soil samples were prepared by mixing 20% kaolin clay of fine sand. Initially, compaction tests were conducted on soil mixture to study the effect of kaolin addition on maximum dry density, optimum moisture content of mixed soil at a relative density of 55%. The mixed soils were improved by cement. Then ,a series of unconfined compression tests were performed …

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Technical And Economical Investigation Of Renewable Energy Sources For Supplying Offshore Oil Production Facilities At Gulf Of Suez Area, Mohamed K. El-Nemr, Belal S. Farrag, Samir Dawoud Oct 2023

Technical And Economical Investigation Of Renewable Energy Sources For Supplying Offshore Oil Production Facilities At Gulf Of Suez Area, Mohamed K. El-Nemr, Belal S. Farrag, Samir Dawoud

Journal of Engineering Research

The Gulf of Suez is highly susceptible to economic and energy security due to the heavy need for imported fossil fuels. The energy produced from fossil fuels causes serious environmental pollution. So, it is important to find other clean sources of energy for stabilizing the released amount of carbon dioxide. Gulf of Suez has the potential to develop clean Solar Photovoltaic (PV) and wind systems to improve economic and environmental performance. This paper proposes a combination of floating solar panels (FSP) and offshore wind turbines to solve the main critical issues, such as the land area required for a large …

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Nonrigid Medical Image Registration Using Adaptive Gradient Optimizer, Mohammed Abdel Rhman Abo Arab, Heba Ali El-Khobby, Amira S. Ashour Oct 2023

Nonrigid Medical Image Registration Using Adaptive Gradient Optimizer, Mohammed Abdel Rhman Abo Arab, Heba Ali El-Khobby, Amira S. Ashour

Journal of Engineering Research

Medical image registration has a significant role in several applications. It has sequential processes, including transformation, similarity metric calculation, diffusion regularization, and optimization of the transformation parameters (i.e., rotation, translation, and shear). The optimization process for determining the optimal set of the transformation vectors is considered the main stage affecting the performance of the registration process. Hence, medical image registration can be deliberated as an optimization problem for computing the geometric transformations to realize maximum similarity between the moving image and the fixed one. In this work, a mono-modal nonrigid image registration using B-spline is designed for the alignment of …

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Thermal Analysis Of A Hybrid Air Conditioning System With Geothermal Energy, Shaimaa Mohamed El-Hetamy, Alsaid Khalil, S. A. El-Agouz, Mohamed Samadony Oct 2023

Thermal Analysis Of A Hybrid Air Conditioning System With Geothermal Energy, Shaimaa Mohamed El-Hetamy, Alsaid Khalil, S. A. El-Agouz, Mohamed Samadony

Journal of Engineering Research

Hybrid air conditioning systems can allow significant energy saving and emissions reductions with respect to conventional air-conditioning systems. Thermal analysis of a desiccant wheel, a heat exchanger, a ground source circulation system, and a solar collector for a hybrid air conditioning system is performed in this study. The effects of these parameters have been studied: Inlet air temperature, Inlet air humidity ratio, wheel speed, regeneration temperature, regeneration mass flowrate, heat exchanger effectiveness, ground source circulation effectiveness, and solar radiation on the behavior of the outlet air temperature and the outlet air humidity ratio from the desiccant wheel, the area of …

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Gaxin2-Xo3 Surface Pyramids Interaction With Formaldehyde: Thermodynamic And Sensing Analysis, Mudar Ahmed Abdulsattar Oct 2023

Gaxin2-Xo3 Surface Pyramids Interaction With Formaldehyde: Thermodynamic And Sensing Analysis, Mudar Ahmed Abdulsattar

Karbala International Journal of Modern Science

GaxIn2-xO3 surface pyramids' electronic structures are investigated using density functional theory, including dispersion corrections. Application of GaxIn2-xO3 surface pyramids as a gas sensor for formaldehyde is also performed and compared with experimental findings. These findings show that the energy gap of these pyramids follows closely with the bulk values. The energy gap increases between the two limits, In2O3 and Ga2O3. Applying GaxIn2-xO3 surface pyramids as a gas sensor uses transition state theory formalism. Thermodynamic quantities such as activation Gibbs energy, enthalpy, and entropy are needed for temperature-dependent calculations. A comparison of sensor response which is proportional to reaction rate as …

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Reducing Uncertainty In Sea-Level Rise Prediction: A Spatial-Variability-Aware Approach, Subhankar Ghosh, Shuai An, Arun Sharma, Jayant Gupta, Shashi Shekhar, Aneesh Subramanian Oct 2023

Reducing Uncertainty In Sea-Level Rise Prediction: A Spatial-Variability-Aware Approach, Subhankar Ghosh, Shuai An, Arun Sharma, Jayant Gupta, Shashi Shekhar, Aneesh Subramanian

I-GUIDE Forum

Given multi-model ensemble climate projections, the goal is to accurately and reliably predict future sea-level rise while lowering the uncertainty. This problem is important because sea-level rise affects millions of people in coastal communities and beyond due to climate change's impacts on polar ice sheets and the ocean. This problem is challenging due to spatial variability and unknowns such as possible tipping points (e.g., collapse of Greenland or West Antarctic ice-shelf), climate feedback loops (e.g., clouds, permafrost thawing), future policy decisions, and human actions. Most existing climate modeling approaches use the same set of weights globally, during either regression or …

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تأثير اللون والضوء على الفراغات السکنية الداخلية, Reem Mohamed Ashraf Elbeshkar, Mahmoud Zaki, Shahira Sharaf Eldin, عزة صبحى السقا Oct 2023

تأثير اللون والضوء على الفراغات السکنية الداخلية, Reem Mohamed Ashraf Elbeshkar, Mahmoud Zaki, Shahira Sharaf Eldin, عزة صبحى السقا

Journal of Engineering Research

إإن اللون و الضوء بينهما علاقة ارتباط قوية نراها من خلال البيئة التي حولنا . ويعتبران من أهم العناصر البصرية لما بهم من طاقة بصرية مؤثرة للإدراک العقلي والحسي ، ونحس من خلالهم بجمال التصميم الداخلي و عناصره المتکاملة . ونجاح التصميم الداخلي يعتمد علي مقدرة المصمم ومعرفته بمبادئ وأساسيات تصميم اللون و الضوء وإختياره للخامات وحساب معاملات الإمتصاص والإنعکاس للخامات والألوان ، ومعرفته أيضا بالعوامل التي تؤثر علي کل منهم . اهتم البحث بمناقشة ودراسة اللون والضوء وخصائص کل منهم ، وتحليل للعوامل المؤثرة علي اللون و الضوء في التصميمات الداخلية ومعايير استخدام کل منهم الجمالية والنفسية ، ودراسة …

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Point Load Index Of Rocks Exposed To High Thermal Effect, Mohamed Sobhey Labeeb, Marwan Shahin, Mostafa Alsawwaf, Ahmed Farouk Oct 2023

Point Load Index Of Rocks Exposed To High Thermal Effect, Mohamed Sobhey Labeeb, Marwan Shahin, Mostafa Alsawwaf, Ahmed Farouk

Journal of Engineering Research

High thermal effects on Point Load Index (P.L.I) of rocks tolerate in mind an essential issue for numerous geotechnical engineering purposes. Many engineering relevancies interact with it as Geothermal power reserve extraction, Fires that occur in tunnels, Underground coal gasification (UCG), and numerous ancient monuments that were made from these rocks and exposed to different thermal impacts. This research aims to carry out Point Load Index (P.L.I) experimental studies of intact rocks as Granite, Sandstone, Marble and, Limestone rocks. In this study, the rock samples are subjected to thermal effects (from room temperature degree 25 oC to a high temperature …

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Using The Brink Depth In Discharge Measurement For Inverted Semicircular Open Channels, Riham Mosaad Zeidan, Mohamed Elshemy, Ibrahim Rashwan Oct 2023

Using The Brink Depth In Discharge Measurement For Inverted Semicircular Open Channels, Riham Mosaad Zeidan, Mohamed Elshemy, Ibrahim Rashwan

Journal of Engineering Research

A free overfall at the end of an open channel provides a simple means for measuring flow discharge. The semicircular open channel plays a significant role in various applications, and it is of interest to calculate its discharge. This paper presents the application of the momentum equation to evaluate the use of a smooth inverted semicircular channel end as devised to calculate the discharge if the end depth is known. The experiments were performed in three separate semicircular inverted channels, with diameters of 15.0 cm, 18.4 cm, and 24.2 cm. The experimental data used to develop equations for calculating the …

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A Computational Fluid Dynamics Study On Different Solar Chimney Designs On Solar Radiation, Mohamed Tarek Ramon, Hagar Alm Eldin Mohamad, Mohamed Samadony Oct 2023

A Computational Fluid Dynamics Study On Different Solar Chimney Designs On Solar Radiation, Mohamed Tarek Ramon, Hagar Alm Eldin Mohamad, Mohamed Samadony

Journal of Engineering Research

The solar chimney power plant (SCPP) is a hopeful solution to produce electrical power from solar energy. In this paper, a 2D numerical study is presented to estimate the performance of the SCPPs while varying the collector angle, chimney diverging angle, variable solar radiation and ambient temperature and some geometrical designs. Numerical models run with solar load discrete ordinates (DO) and realizable k-ɛ turbulence models. System is defined by the collector height =50 mm, the chimney diameter =160 mm, the collector diameter =2750 mm and the chimney height =3000 mm. its investigated for each case the profile of magnitude velocity, …

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تحقيق الأصالة في مشروعات إعادة الاعمار لمواقع التراث العالمي الثقافي المتضررة من الحروب والنزاعات Achieving Originality In The Reconstruction Projects Of The Cultural World Heritage Sites Affected By Wars And Conflicts, Fifi Abd Allah Mohamed, Nermin Ali Omar, Ayman Gamal El Dine Abd El Tawab Oct 2023

تحقيق الأصالة في مشروعات إعادة الاعمار لمواقع التراث العالمي الثقافي المتضررة من الحروب والنزاعات Achieving Originality In The Reconstruction Projects Of The Cultural World Heritage Sites Affected By Wars And Conflicts, Fifi Abd Allah Mohamed, Nermin Ali Omar, Ayman Gamal El Dine Abd El Tawab

Journal of Engineering Research

تستند الأمم عبر الزمن على تاريخها الأصيل، فمن ليس له ماضي ليس له حاضر. ويعتبر التراث الثقافي من أوضح الصور المادية للتراث والتي تصنع تاريخاً للإنسان وتصنع له الهوية الحضرية التي ستتکلم عنه في المستقبل. وعلى النقيض يعتبر محو التاريخ المادي أحد مداخل محو الأمم، وهذا ما يتعرض له التراث العالمي الثقافي أحياناً في هذه الأيام، فاستهدافه وتدميره يؤدي الى محو تاريخ الأمم. حيث تتعرض مواقع التراث العالمي الثقافي الى تدمير کبير ومستمر بسبب الحروب والنزاعات المسلحة؛ التي أصبحت تؤثر على مختلف جوانب الحياة وتتسبب في آثار کارثية کبيرة کإرهاق الأرواح وتشريد السکان الذين هم بمثابة الذاکرة الاجتماعية، فضلاً عن …

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Utilization Of Industrial Wastes For Improving Geotechnical Properties Of Collapsible Soil, Mariem Magdy Abbas, Ashraf Nazir, Ahmed Nasr, Mona Darweish Oct 2023

Utilization Of Industrial Wastes For Improving Geotechnical Properties Of Collapsible Soil, Mariem Magdy Abbas, Ashraf Nazir, Ahmed Nasr, Mona Darweish

Journal of Engineering Research

At the present time the disposal of industrial wastes has become a challenge for most countries. This research aims to study the effect of mixing the industrial textile sludge on geotechnical properties of collapsible soil. The experimental program studies the effect of textile wastes on Atterberg limits, collapse potential, compaction, CBR, and shear strength parameters. The percentages of textile wastes mixed with soil are 4, 8, 12, 16, 20, and 24 %. The results indicated that the collapse potential of untreated soil is significantly decreased from about 11% to 2.6% at 24% of textile sludge. Shear test results show an …

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Effect Of Operational And Design Parameters On Desiccant-Assisted Hybrid Air-Conditioning Systems Performance, Shaimaa Mohamed El-Hetamy, Alsaid Khalil, El-Sayed Abdelazim El-Agouz, Mohamed Samadony Oct 2023

Effect Of Operational And Design Parameters On Desiccant-Assisted Hybrid Air-Conditioning Systems Performance, Shaimaa Mohamed El-Hetamy, Alsaid Khalil, El-Sayed Abdelazim El-Agouz, Mohamed Samadony

Journal of Engineering Research

Energy savings are a major goal in our lives because energy consumption is continuously increasing. We have studied in this paper four air conditioning systems, so that each system mainly consists of a vapor compression cycle and a rotating desiccant wheel. The thermodynamic analysis for air conditioning system, the heat exchanger, the ground heat exchanger and the evaporative water spray cooler were presented. Design and operating parameters including outlet air temperature, outlet air humidity, regeneration air temperature, and desiccant wheel speed are studied to assess its effect on the performance of the systems considered. This hybrid system significantly decreases the …

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Simplified Analysis Of Pure Conical Water Vessels Under Hydrostatic Loading, Maryam Ayman Seleemah, Ahmed Elansary, Saher Ibrahim Oct 2023

Simplified Analysis Of Pure Conical Water Vessels Under Hydrostatic Loading, Maryam Ayman Seleemah, Ahmed Elansary, Saher Ibrahim

Journal of Engineering Research

Liquid storage structures represent an important component of modern infrastructure. They can take variety of shapes of which the conical shape is one of the most common configurations. Conical tanks are preferred by both architects and structural engineers because of their appealing look and structural efficiency in addition to their large capacities with relatively small footprint area. The state of stresses in these tanks is rather complicated and needs powerful computational tools. However, in the preliminary design phase, it is important to have a simplified analysis method for selection of economic design parameters including tank height, inclination angle, and footprint …

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Data Mining In Internet Of Things Systems: A Literature Review, Amany M. Sarhan Oct 2023

Data Mining In Internet Of Things Systems: A Literature Review, Amany M. Sarhan

Journal of Engineering Research

The Internet of Things (IoT) and cloud technologies have been the main focus of recent research, allowing for the accumulation of a vast amount of data generated from this diverse environment. These data include without any doubt priceless knowledge if could correctly discovered and correlated in an efficient manner. Data mining algorithms can be applied to the Internet of Things (IoT) to extract hidden information from the massive amounts of data that are generated by IoT and are thought to have high business value. In this paper, the most important data mining approaches covering classification, clustering, association analysis, time series …

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An Overview Of The Effect Of Using Hho On Spark Ignition And Direct Injection Engines Combustion, Performances, And Emissions Characteristics, Hagar Alm Eldin Mohamad, Elshenawy Abd Elhamid, Medhat Elkelawy, Osama Ali Ismail Hendawi Oct 2023

An Overview Of The Effect Of Using Hho On Spark Ignition And Direct Injection Engines Combustion, Performances, And Emissions Characteristics, Hagar Alm Eldin Mohamad, Elshenawy Abd Elhamid, Medhat Elkelawy, Osama Ali Ismail Hendawi

Journal of Engineering Research

Abstract: One of the major issues, the energy crisis, makes the globe dangerous and violent [1]. Every day, there is an increase in energy demand. Resources of energy are running out swiftly, and all indicators point to their impending demise. In such cases, renewable energy sources must be given more consideration. The widespread use of fossil fuels renders them unsustainable because they increase CO2 levels and emit greenhouse gases that harm the environment [2]. With several trials of usage of HHO gas or compressed natural gas as a fuel performance improver on both internal combustion engines powered by gasoline or …

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The Performance Of Cold-Formed Steel Members With Stiffened Perforations, Nasam Shokry Khater, Mahmoud H. El-Boghdadi, Nashwa Mohamed Yossef Oct 2023

The Performance Of Cold-Formed Steel Members With Stiffened Perforations, Nasam Shokry Khater, Mahmoud H. El-Boghdadi, Nashwa Mohamed Yossef

Journal of Engineering Research

CFS sections are usually supplied with openings to adapt construction services. Nevertheless, the area lowering in the web influences their strengths. If stiffeners are provided near the web openings, the reduction in flexural capacity could be recovered. Therefore, this paper introduces a study on the CFS section with stiffened perforations. A finite element (FE) analysis was accomplished. The numerical model was verified versus experimental and numerical tests from prior research and then utilized in performing parametric studies. The influence of circular openings with various sizes and various stiffener lengths on the flexural capacity was examined in the nonlinear analysis. Depending …

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مدخل االرتباط الحضري البيئي لتحقيق اإلدارة المستدامة للعمران المصري Urban-Environmental Nexus Approach To Achieve Sustainable Management Of Egyptian Urbanization, Marwa Sebawy Hamed, Mohamed Fareed Mohamed Abd-Elaziz Oct 2023

مدخل االرتباط الحضري البيئي لتحقيق اإلدارة المستدامة للعمران المصري Urban-Environmental Nexus Approach To Achieve Sustainable Management Of Egyptian Urbanization, Marwa Sebawy Hamed, Mohamed Fareed Mohamed Abd-Elaziz

Journal of Engineering Research

نظراً لما تشهده التجمعات العمرانية من ارتفاع معدلات النمو السكاني، وما ينتج عنه من تزايد الضغوطات على موارد المياه والطاقة والغذاء بشكل مستمر، الامر الذي يتولد من خلاله بعض القضايا التي تواجه المجتمعات مثل الاضطراب الاقتصادي والقضايا المتعلقة بتغيير المناخ وغيرها من القضايا الملحة التي تحتاج الى تدخل وذلك لمحاولة تحقيق مبادئ وأهداف التنمية المستدامة لتلك التجمعات حيث يعتبر من أهم أسباب تلك القضايا هي القرارات والخطط القطاعية ذات التوجه الأحادي للتعامل مع تلك القضايا وعدم وجود خطط متكاملة تعمل الحفاظ على الموارد بشكل عام وتحقيق اهداف التنمية المستدامة. لذا يهدف البحث الى صياغة إطار منهجي لتحقيق الإدارة المستدامة للعمران …

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Effect Of Cuo Nanoparticles On Performance And Emissions Behaviors Of Ci Engine Fueled With Biodiesel-Diesel Fuel Blends, Medhat Elkelawy, Elshenawy Abd Elhamid, Hagar Alm Eldin Mohamad, Ibham Abd-Elhay Elshennawy Oct 2023

Effect Of Cuo Nanoparticles On Performance And Emissions Behaviors Of Ci Engine Fueled With Biodiesel-Diesel Fuel Blends, Medhat Elkelawy, Elshenawy Abd Elhamid, Hagar Alm Eldin Mohamad, Ibham Abd-Elhay Elshennawy

Journal of Engineering Research

Recently the world has a very important need for replacement fossil fuel with renewable sources of energy. Greenhouse effect is considered one of bad effects of fossil fuels. In this study diesel fuel will be replaced with blends of diesel and biodiesel produced from waste cooking oil(WCO) is created using a catalytic transesterification reaction (CTR). With the addition of a low concentration of alcohol over the period of an hour at a reaction temperature of 65 °C, (CTR) converts (WCO) to methyl esters. Blends consisting of (40 % diesel, 60 % biodiesel and CuO nano- martial with different concentration) will …

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نحو تصميم مسار دراجات آمن فى المدن دراسة الحالة مشروع كايرو بايك (المرحلة الأولى وسط البلد) Towards Designing A Safe Bike Path In Cities, Case Study: Cairo Bike Project (1st Phase Down Town), Kareem M Ali Oct 2023

نحو تصميم مسار دراجات آمن فى المدن دراسة الحالة مشروع كايرو بايك (المرحلة الأولى وسط البلد) Towards Designing A Safe Bike Path In Cities, Case Study: Cairo Bike Project (1st Phase Down Town), Kareem M Ali

Journal of Engineering Research

يواجه العالم تحديات تهدد أستقراره فى الوقت الحالى متمثلة في التغيرات المناخية وأهمية التكاتف بين دول العالم فى عدم زيادة درجة حرارة الأرض عن 1.5درجة مئوية ، ومشاكل أقتصادية متعلقة بالتضخم وغلاء المعيشة وأرتفاع أسعار الوقود، مما تتطلب زيادة الإهتمام بوسائل نقل غير آلية مثل الدراجات الهوائية كونها وسيلة نقل مستدامة ، على المستوى المحلى دعمت القيادة السياسية ركوب الدراجات من إنشاء حديقة الدراجات وتوفير مسارات بالمدن الجديدة مثل مدينتى 6أكتوبر والشروق، وتبني محافظة القاهرة لمشروع كايرو بايك،.وبناءا على ذلك يتناول البحث كيفية تصميم بيئة آمنة تشجع المجتمع على ركوب الدراجات من خلال دراسة نظرية للمباديء التصميمية الأساسية لمسارات الدراجات …

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Life Cycle Costing Of Structures Fabricated From Carbon And Stainless Steel, Mohamed Hamed Abdel_Ghany, Omnia Kharoup, Nashwa Mohamed Yossef Oct 2023

Life Cycle Costing Of Structures Fabricated From Carbon And Stainless Steel, Mohamed Hamed Abdel_Ghany, Omnia Kharoup, Nashwa Mohamed Yossef

Journal of Engineering Research

Historically, structural material selection has been dependent on initial material cost. However, increasing pressure on the construction industry to examine projects' long-term financial and environmental effects is pushing a more holistic approach. As a result, materials with higher starting costs but lower expenses over the life cycle of a construction project are gaining popularity. In this study, the life cycle costs of structures made of two such metallic materials (stainless steel and carbon steel) were investigated. Two structural applications are studied: a typical office structure and a bridge. The initial material cost per ton ratio (stainless steel: carbon steel) was …

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Deeplab V3+ Based Semantic Segmentation Of Covid -19 Lesions In Computed Tomography Images, Merihan Mohamed Abdalwahab Eissa Abdalwahab, Sameh Napoleon, Amira S. Ashour Oct 2023

Deeplab V3+ Based Semantic Segmentation Of Covid -19 Lesions In Computed Tomography Images, Merihan Mohamed Abdalwahab Eissa Abdalwahab, Sameh Napoleon, Amira S. Ashour

Journal of Engineering Research

Abstract- Coronavirus 2019 spreads rapidly worldwide causing a global epidemic. Early detection and diagnosis of COVID-19 is critical for treatment as it causes respiratory syndrome appears in the chest medical images, such as computed tomography (CT) images, and X-ray images. The CT images are more sensitive and have more details compared to the X-ray images. Thus, automated segmentation plays an imperative role in detecting, diagnosing, and determining the spreading of COVID-19. In this paper, the DeepLabV3+ combined with MobileNet-V2 model was implemented. To validate this combination, we conducted a comparative study between the DeepLabV3+ variants by its combination with MobileNet-V2 …

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Study Of The Effect Of Geomembranes On The Interaction Between The Soil And Underground Structures, Ahmed Samir Rashed, Tamer M. ‎ Sorour, Ahmed N. Elsayed Oct 2023

Study Of The Effect Of Geomembranes On The Interaction Between The Soil And Underground Structures, Ahmed Samir Rashed, Tamer M. ‎ Sorour, Ahmed N. Elsayed

Journal of Engineering Research

Geomembranes are one of the most widely used insulation materials in various civil engineering applications. Failure due to the slippage between geomembranes and the interfacing soils was detected at some cases. This paper presents the results of a series of laboratory tests carried out to investigate the factors controlling the developed interface stresses strength between the soil and geomembranes. In order to quantify the effect of different commonly used isolation membranes on the behavior and stability of buried concrete structures, laboratory studies by using modified direct shear apparatus is performed and integrated and the reduction in the shear resistance between …

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Optimized Adaptive Frangi-Based Coronary Artery Segmentation Using Genetic Algorithm, Ahmed Hawas, Mohamed Elsayed Elsetiha, Heba El-Khobby, Amira Ashour Oct 2023

Optimized Adaptive Frangi-Based Coronary Artery Segmentation Using Genetic Algorithm, Ahmed Hawas, Mohamed Elsayed Elsetiha, Heba El-Khobby, Amira Ashour

Journal of Engineering Research

Diseases of coronary artery are deliberated as one of the most common heart diseases leading to death worldwide. For early detection of such disease, the X-ray angiography is a benchmark imaging modality for diagnosing such illness. The acquired X-ray angiography images usually suffer from low quality and the presence of noise. Therefore, for developing a computer-aided diagnosis (CAD) system, vessel enhancement and segmentation play significant role. In this paper, an optimized adapter filter based on Frangi filter was proposed for superior segmentation of the angiography images using genetic algorithm (GA). The original angiography image is initially preprocessed to enhance its …

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Examining The Adoption Of Prefabricated Construction Methods For Building Housing In Egypt, Nermeen Maher El-Nemr, Fatma Agrama Oct 2023

Examining The Adoption Of Prefabricated Construction Methods For Building Housing In Egypt, Nermeen Maher El-Nemr, Fatma Agrama

Journal of Engineering Research

Prefabricated construction methods have become a key strategy to achieve sustainable development in building housing around the world. However, these methods are still used in a narrow context in building Egyptian housing. This research aims to examine the adoption of prefabricated construction methods for building Egyptian housing. To achieve the aim of the research, 28 performance criteria under economic, social, environmental, and technical categories were used to evaluate the performance of prefabricated and traditional on-site frame construction methods in building Egyptian housing. Multi-criteria decision-making techniques (MCDM): the Technique for Order of Preference by Similarity to Ideal Solution technique (TOPSIS) and …

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