Port Said University, Faculty of EngineeringPort-Said Engineering Research Journal1110-660326220220601Student Perception of Effective Online Learning: A Study of Practical Design Courses1920731010.21608/pserj.2021.66602.1097ENAsmaa RmadanElantaryAssistant Professor of Arch, Department of Interior Design, Jubail University College, KSA0000-0002-0002-3582Thara'aAl MindeelInterior Design Department, Jubail University College, Royal Commission, Kingdome of Saudi ArabiaRawan AbdullahAlghamdiInterior Design Department, Jubail University College, Royal Commission, Kingdome of Saudi ArabiaJournal Article20210307With academic online learning becoming an inevitable alternative to the traditional approach of learning for schools and colleges worldwide during the pandemic, there has been a greater need to investigate students’ perception of online learning in academia especially for curriculum courses of special nature such as practical courses. With a need to fill a research gap related to the effectiveness of academic online practical courses, this paper aims to get some insights into how students interact with those specific course modalities virtually. This will enable us not only to evaluate student’s learning outcomes but more importantly, facilitate and improve students’ learning experience in virtual practical classrooms.<br /><br />Interior Design major students from all levels of study at Jubail university college were surveyed. The students’ answers were analyzed using SPSS with relation to their experience in taking online practical courses during the suspension. With both satisfaction rates and effectiveness of learned courses being positive, attention was given to the most important factors that affected the quality of online teaching and learning of practical design courses. The students’ level and background were the most influential factors, while the course nature was affected by the course material availability and the instructors’ effective feedback. The paper has also shed light on the role of both the teacher and students in the learning process along with other factors such as time, technology, and environment that were also examined and analyzed.https://pserj.journals.ekb.eg/article_207310_7abaef5242453e753979e24a03d043b5.pdfPort Said University, Faculty of EngineeringPort-Said Engineering Research Journal1110-660326220220601Effect of different screen areas on the submerged hydraulic jump characteristics101719796310.21608/pserj.2021.77341.1113ENOsamaSalehWater and Water Structure department, Faculty of Engineering, Zagazig UniversitySuzanAbdallaWater and Water Structure department, Faculty of Engineering, Zagazig UniversityEmanElnikhelyWater and Water Structure department, Faculty of Engineering, Zagazig University0000-0003-1516-553xJournal Article20210524The hydraulic jump is a natural phenomenon occurs in steep waterways and behind the heading up structures. The main benefit of the hydraulic jump is dissipating the excessive kinetic energy. Tools such as sill, baffle blocks… etc. are used to maximize the energy loss through the hydraulic jump. In the present study, screens with a constant height and width are located downstream the gate at a constant relative distance and examined under the different conditions of submerged hydraulic jump. Screens with different relative holes area are tested to select the best screen relative area. Screen with relative holes area of 0.285 had a maximum energy loss and shortest length with a minimum tail water depth of the submerged hydraulic jump. The theoretical derived equation of the relative depth of the hydraulic jump had a higher asymmetric scatter with the experimental results around the line of equality; however an acceptable agreement was present when a correction factor was used.https://pserj.journals.ekb.eg/article_197963_45f8c46fbccc2452017129e0714c042c.pdfPort Said University, Faculty of EngineeringPort-Said Engineering Research Journal1110-660326220220601Impact of rubber waste in rigid pavement182519948410.21608/pserj.2021.89586.1134ENMohamedEisaCivil Engineering Department, Benha Faculty of Engineering, Benha University, Benha, Egypt0000-0002-6233-9347MostafaRabahCivil Engineering Department, Benha Faculty of Engineering, Benha University, Benha, EgyptEsraaAhmedCivil Engineering Department, Benha Faculty of Engineering, Benha University, Benha, EgyptJournal Article20210807The production of rubber tires is about tens of millions annually due to the increase in the production and development of cars every year. Rubber tires need hundreds of years to decompose because one of their components is sulfur. This indicates that there is a clear environmental and economic catastrophe. The best solution is recycling rubber in different fields. The most important of which is concrete as the main backbone in the field of engineering and construction. In this study, the effect of rubber is discussed as coarse aggregate in the form of shredded rubber and as fine aggregate in the form of grinded rubber in concrete used for rigid pavement. Samples were prepared to conduct the necessary tests to study the behavior of rubberized concrete in terms of compressive, tensile strength, impact energy absorption and loading. The results showed that using ten percentage of grinded rubber was the optimal amount as the mixture had properties that were very similar to the properties of ordinary concrete regarding compressive strength, indirect tensile strength, and density. five percentage of shredded rubber caused a decrease in compressive strength, indirect tensile strength and density of sample C by about 85%, 96.5% and 97%, respectively. five percentage of grinded rubber caused a decrease in compressive strength, indirect tensile strength, and density of sample C by 69.57%, 59.6% and 93%, respectively.https://pserj.journals.ekb.eg/article_199484_3cf6ba9933240844a56d6b49701ccf0c.pdfPort Said University, Faculty of EngineeringPort-Said Engineering Research Journal1110-660326220220601Assessment of Uncertainties in Soil Parameters Using Finite Element Coupling Technique263520308910.21608/pserj.2021.93210.1139ENMohamed HamedMouradport said university- faculty of engineering- civil departmentMohamed MosaadElgendyCivil Engineering, Faculty of Engineering Port-Said UniversityEhabTolbaProfessor, Faculty of Engineering, Port Said University, Egypt,Said MGalalAssociate Professor, Faculty of Engineering, Port Said University,
EgyptJournal Article20210830Uncertainties are unavoidable in geotechnical engineering design. Quantifying uncertainties and the related risks are very important in the overall design. For problems involving complex soil-structure interactions, using a fixed partial or global safety factor may lead to unrealistic failure or conservative design. The probabilistic analysis could be used as a basis for handling various types of uncertainties. The reliability analysis for complex structures requires a coupling between two models. A finite element model (FEM) to evaluate the limit state function (LSF) and a reliability model to deal with the random variables and reliability methods. Since the coupling between FEM and reliability methods is considered a new field, there is a need to use a hybrid technique for coupling. In the present paper, a developed technique for coupling between PLAXIS 2D v20 and Probabilistic tool-kit (PTK) is illustrated and checked throughout verification examples. The main goal is to present an “easy to use” reliability analysis technique to identify the probability of failure, the reliability index, and the influence factors for complex geotechnical structures. The results show that the developed coupling technique has a good reliability analysis result compared with the previous studies and it can be used to optimize the current design procedure for geotechnical structures.https://pserj.journals.ekb.eg/article_203089_69216a978677b658c01b7853ff3d12b1.pdfPort Said University, Faculty of EngineeringPort-Said Engineering Research Journal1110-660326220220601Effect of Statistical Data in the Probabilistic Analysis for Port-Said East Port Diaphragm Quay Wall364620309010.21608/pserj.2021.93204.1138ENMohamed HamedMouradport said university- faculty of engineering- civil departmentMohamed MosaadElgendyCivil Engineering, Faculty of Engineering Port-Said UniversityEhabTolbaProfessor, Faculty of Engineering, Port Said University, Egypt,SaidGalalAssociate Professor, Faculty of Engineering, Port Said University,
EgyptJournal Article20210830Quay walls and deep excavations are typical applications of geotechnical retaining structures. These structures must be acceptable safe, and cost-effective. The design of retaining structures is usually carried out by using characteristic values for soil properties as a conservative estimation for Serviceability Limit State (SLS) and combined with safety factors for Ultimate Limit State (ULS). The soil parameters used in the design are uncertain values due to many reasons. Recently, probabilistic approaches started to take place in the engineering community. These approaches guaranty a reasonable level of reliability and reduces the risk and the investment cost. In the present paper, a developed technique for coupling between PLAXIS 2D V20 and Probabilistic Tool-Kit (PTK) will be employed to perform a reliability analysis for port-said east port diaphragm quay wall. This study aims to identify the probability of failure and the importance factors for each structural component using the First Order Reliability Method (FORM) and study the effect of varying the statistical data for the most significant soil parameters. The results show that the developed technique can perform the reliability analysis effectively. Also, it showed that the statistical data for soil parameters have a considerable effect on the probabilistic analysis results.https://pserj.journals.ekb.eg/article_203090_594c8eb568bb347086138aaf4938ffc9.pdfPort Said University, Faculty of EngineeringPort-Said Engineering Research Journal1110-660326220220601Impacts of reduced water flow on the riverside intakes475520459410.21608/pserj.2021.79663.1118ENFahmy SalahAbdelhaleemAssociate Professor, Civil Engineering Department, Benha Faculty of Engineering, Benha University, 13512, Benha, Qalubiya, Egypt0000-0002-3279-9668TarekNasrallaCivil Engineering Department, Benha Faculty of Engineering, Benha University, 13512, Benha, Qalubiya, EgyptAhmedAwaadCivil Engineering Department, Benha Faculty of Engineering, Benha University.Basma SayedAbdelrhmancivil, benha, benha university , egyptJournal Article20210703Water intakes are designed to carry water supply pipes to reach channel water specifically during periods of minimum water stages. If the water levels fall below expectations, it will cause some intakes out of service and negative impacts on the intakes. In this paper, the effects of flow reduction ratio values on the intakes along the River Nile from Esna Barrage to Naga Hammadi Barrage are studied numerically. Different scenarios were considered for this reduction and mathematical model (SOBEK-1D) was used to compute water level along River Nile. The results showed that the reduction in water levels produces negative impacts on the intakes and illustrated to assist the decision maker to solve the problems of affected intakes. These reductions are maximum with 8.9% at Naga Hammadi Barrage for the last scenario and minimum with 0.2% for the first scenario, the reduction in water levels decreases Nile water velocities and reduction water level up to 5% produces small influence on the safe navigation. The scenario of only 5% reduction the not working intakes will be more than 59%https://pserj.journals.ekb.eg/article_204594_1f68ca9ae3036a51d1f0492b694ad16f.pdfPort Said University, Faculty of EngineeringPort-Said Engineering Research Journal1110-660326220220601Analytic Hierarchy Process Framework for Water Security Management in Egypt566021673010.21608/pserj.2022.105522.1153ENMohamed HamedHamedCivil Engineering Department,
Canadian International Colleague (CIC), Giza, EgyptJournal Article20211118Water security is one of the main serious constraints for development in Egypt. Furthermore, it is essential to develop strategies for the water sector in an integrated way. However, this research develops a new integrated water security index (IWSI) based on the analytic hierarchy process (AHP) to highlight the evaluation of the water security situation in Egypt. The new proposed index is strongly correlated with fifteen indicators that selected to evaluate the five main key components (Availability Water Security (AWS), Economic Water Security (EWS), Water-Related Disasters Security (WDS), Environment Water Security (EVWS), and Governance and Water Management Security (GWMS)). The developed integrated water security index (IWSI) evaluates the status of water security in Egypt. The study concludes that IWSI is considered a good water management tool to help decision-makers prioritize future water development plans and improve resource management. Moreover, it is highly recommended to continue improvement in water security index assessment for monitoring the rapid variability in its integrated indicators.https://pserj.journals.ekb.eg/article_216730_a61d35f01d8dbdf23dca681986167015.pdfPort Said University, Faculty of EngineeringPort-Said Engineering Research Journal1110-660326220220601Watershed Delineation and Runoff Estimation of Wadi Tayyibah, South Sinai Using Arc-GIS And HEC-HMS Model617121673110.21608/pserj.2022.111930.1155ENMahmoudMaherCivil engineering, Benha faculty of engineering, Benha University, Benha, EgyptTarek H.NasrallahCivil engineering, Benha faculty of engineering, Benha University, Benha, EgyptMostafaRabahCivil Engineering Department, Benha Faculty of Engineering, Benha University, Benha, EgyptFahmy SAbdelhaleemCivil engineering, Benha faculty of engineering, Benha University, Benha, EgyptJournal Article20211220Sinai is a rigid region and one of the most important strategic areas in Egypt for its historical importance, its location, Its touristic importance, and its natural resources. the lack of water sources in Sinai is the most important reason for the lack of development in it. so the study aims to estimate the runoff in wadi Tayyibah which located in south Sinai to benefit from it in different uses and avoid the hazards which occurred due to the floods through design protection structures that depend on the amount of runoff. The present study aims to evaluate the runoff, morphometric properties and delineate the watersheds in Wadi Tayyibah relying on The Soil Conservation Service Curve Number (SCS-CN) method besides Hydrologic Engineering Center-Hydrologic Modeling System (HEC-HMS) model which is a hydrological model that be used to estimate the runoff and produce the hydrographs for storms with different return period5,10,25,50and100 years, that model also be used in watershed delineation for the study area. The Arc-GIS is used in hydrological and topographical analysis and used to represent the characteristics of the case study in maps. The rainfall data which be used was for Abou Redus rainfall station in monthly data from1976 year to2018 year. The frequency analysis has been done using Microsoft Excel which produces storms with depths20.6,29.2,40.7,49.3,58mm of return periods5,10,25,50and100years, respectively. The runoff as a volume 0.18, 0.911, 2.53,3.89 and 5.89 Mm3 and as depth 0.5, 2.56, 7.10, 10.93 and16.54 mm of return periods respectivelyhttps://pserj.journals.ekb.eg/article_216731_3cbb58e6063833b961e87a50d7a497c3.pdfPort Said University, Faculty of EngineeringPort-Said Engineering Research Journal1110-660326220220601Prediction of Ultimate Tensile Strength of Shipbuilding Steel Plate LR Grade-A (S235JRG2) for One-Sided Butt-Welding Joint728019948310.21608/pserj.2021.99551.1148ENRanda RamadanAbdelaghnyLecturer, Naval Architecture, and Marine Engineering Department, Faculty of Engineering, Port Said University, Port Said, Egypt.0000-0003-0779-239XMohamedAbouelsayedB.Sc., Naval Architecture, and Marine Engineering, Department,
Faculty of Engineering, Port Said University, Port Said, Egypt,0000-0003-0406-4063Journal Article20211006This work presents an evaluation of the Ultimate Tensile Strength (UTS) of One-sided butt-welding joints in the marine field, using the technique of the rootArc® program. The study was conducted, using a semi-automatic welding machine model; EWM-Taurus 505 Basic S. In this study, due to the developments of welding technology and the improvements in welding machines, the one-sided welding technique was adopted to weld two (S235JRG2) steel plates of 8 mm, by means of Gas Metal Arc Welding (GMAW) process. Through the experiments, six samples were evaluated. All welding passes of welded joints were welded using a welding machine (EWM) with the same program rootArc®, using 100% commercial Carbon Dioxide (Co2) as shielding gas. In addition to implementing a range of current intensity from 90 to 180 Amp and voltages from 15 to 25 Volt were used. Two different types of welding consumables electrodes were used in this work, first flux-cored wire, AWS A5.20/ASME SFA5.20 E71T-1C, and second solid wire, AWS/ASME A-5.18 ER70S-6. The experimental results were verified by Destructive Tests (DT) in the International Pipe Industry Company (IPIC) laboratory as well as Non-destructive tests (NDT), magnetic particles, Ultrasonic and X-ray, done in Port-Said Shipyard. The results have shown that the accepted joint with selected parameters was able to predict the ultimate tensile strength. Moreover, the specimen shows that the rapture due to the transverse tensile test occurs in the base metal, not in the welding seam.https://pserj.journals.ekb.eg/article_199483_5696f41503a0ef24c17d6bb0651463ab.pdfPort Said University, Faculty of EngineeringPort-Said Engineering Research Journal1110-660326220220601Development of A Universal Journal Bearing Test Rig (UJBTR) and Experimental Setup for Oil Film Lubrication Enhancement Regarding Marine Applications.819320183610.21608/pserj.2021.100583.1149ENNourMareyArab Academy for Science, Technology and Maritime ‎Transport, Alexandria, Egypt0000-0003-4959-6506Elsayed HusseinHegazyProf., Naval Architecture, and Marine Engineering, Department,
Faculty of Engineering, Port Said University, Port Said, Egypt,HassanEl-GamalMechanical Engineering, Faculty of Engineering, ‎Alexandria University, EgyptAmman AliAliArab Academy for Science, Technology and Maritime ‎Transport, Alexandria, Egypt.Randa RamadanAbd-El-GhanyNaval Architecture &amp; Marine Engineering Dept., Port Said University, Port Said, Egypt.0000-0003-0779-239XJournal Article20211011In fact, attaining the final most beneficial target of improving the oil film lubrication for marine purposes can be said to have passed through several main stages up till now. The first stage has involved the initial design and construction of the journal bearing test rig marked by sufficient validity for embracing the potential experimental studies. Those studies were concerned with the lubricating oil within the journal bearing [1]. Notwithstanding, the need has then arisen for the second stage which involved carrying out a comprehensive modification and conversion in regard to the journal bearing test rig, aiming at enlarging its capacity and range to endure more sophisticated experiments. The modification has involved adding a hydraulic loading system as well as full monitoring process via SCADA system, for the sake of facilitating conducting all potential experiments relating the critical operating factors that might otherwise affect the journal bearing performance. This paper is representing the second step in the long uninterrupted series of efforts seeking to outline the results of a proposed research program for marine applications under the title of “Theoretical and Experimental Analysis of the Performance of Journal Bearing”. The program will deal with different design and construction aspects of journal bearing, with special reference to marine applications. https://pserj.journals.ekb.eg/article_201836_1c8a2258b96847f95b33a9eedb7056f9.pdfPort Said University, Faculty of EngineeringPort-Said Engineering Research Journal1110-660326220220601Optimal Size and Location of DG in The Distribution System for Power Loss and Voltage Deviation Minimization9410119920910.21608/pserj.2021.87406.1130ENRabab RedaEiadaelectrical power -engineeringJournal Article20210727Allocation of the distribution generator (DG) in distribution system faces many challenges. The selection of the best location and capacity of the DG must be carefully selected as this affects the performance and stability of the system. This paper proposes the application of particle swarm optimization technique to find the optimum allocation of DG in the distribution network for active and reactive power compensation to reducing power losses and enhancement the voltage profile. The main objective of the paper is to determine an appropriate location and size for different types of DG and investigate the impact of battery energy storage system (BESS) in the distribution systems. Proposed technique is tested standard IEEE 33-bus is simulated in MATLAB to indicate the effectiveness of the PSO algorithm in solving the optimization problems of placement and sizing of multi-type DGs. and the obtained results are compared without distributed generation. The simulation results ensure the ability of the proposed algorithm for achieving the goals.https://pserj.journals.ekb.eg/article_199209_5a4dde6fcd63cbf69f96013c22a2670b.pdfPort Said University, Faculty of EngineeringPort-Said Engineering Research Journal1110-660326220220601Weldability of Dissimilar Aluminum Alloys AA7075-AA5083 Using FSW Technique10211120086710.21608/pserj.2021.94331.1140ENHassan MohamedAbdelhafezProduction Engineering and Mechanical design Department, Port Said University, Egypt0000-0003-3777-5806Journal Article20210905The influence of the friction stir welding conditions on weldability of two very popular aluminum alloys, in welding construction, is analyzed in this study. Non-heat-treatable (AA5083-H111) and a heat-treatable aluminum (AA7075-T651) alloy, are characterized by markedly different strengthening mechanisms and microstructural evolution at increasing temperatures. Dissimilar weldments were produced by the friction stir welding process under different welding conditions. The welding parameters were rotational speed, welding speed, tool geometryو material location and tool position. Their metallographic and mechanical properties were analyzed and compared using metallographic examination, hardness test and tensile test. <br />Dissimilar joints show some defects that differ due to the welding conditions. Higher rotational and welding combination speeds achieve sound joint associated with higher strength compared to the other welding joints. Moreover, when the soft material is located at the retreating side the weldment performance is improved.<br />Due to the relationship between metal formability and temperature, the heat distribution under various welding parameters was studied. The temperature analysis indicates that increasing the rotational speed increases the produced heat and consequently, the mixing efficiency of the welded alloys.https://pserj.journals.ekb.eg/article_200867_6fc6e4fae02c23878ef8e5f481ba922e.pdf