Gongcheng Kexue Yu Jishu/Advanced Engineering Science

Abstract : Designing an optimal surfactant polymer design is very crucial and requires numerous laboratory tests that require infinite time, higher financial statements, and probably lack accuracy. Consequently, AI techniques have taken over, proving excellent accuracy levels with less time and lower cost. This paperwork is objectified to eliminate any laboratory work when it comes to generating an optimal surfactant-polymer design with the freedom to do multiple adjustments across the factors affecting the process and their responses in minutes and with financial ease. Consequently, a comparative study is done throughout this paper in order to have an optimum prediction for either factor affecting EOR recovery or their outcomes. However, this paper has traced the footprints of the previous experimental study by considering the critical-micelle-concentration of 1.25wt.% is the optimum alongside depending on the laboratory observations at evaluating the surfactant, the values of each factor, and its respective result under specific conditions i.e.: high-salinity. Nonetheless, the computerized observations have slightly deviated when it comes to the polymer concentration which altered everything afterward analytically and statistically, however it is realistic. The Design-Expert software was used to initiate this comparative study, it has shown promising outcomes as another XG concentration was predicted at 1871.61 ppm rather than the former 2000 ppm. This caused a difference between both the previous and present study. For instance, experimentally IFT chosen was 3.1 mN/m, contact angles chosen were 50.1° and 60.52°, viscosity chosen was 11.78 cp and the oil recovery factor percentage was 53% after SP flooding. Oppositely, the AI design shows an IFT of 3.0072 mN/m, contact angles of 49.75° and 59.53°, a viscosity of 11.99 cp, and an oil recovery factor of 51.41%. The model has shown high accuracy with the observation of R^2 reaching 0.9988 and standard deviation as low as 0.1121. The success of the proposed AI model would be a plot twist if applied to Egyptian oil fields due to the minor role of EOR in such regions..
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Abstract : Bedono Village of Sayung District belongs to Demak Regency and is situated on the northern coast of Central Java Province. This area has many rivers and other important habitats: mangrove forests and silty-clay beaches. These rivers transport sediment to the waters of Bedono. With the development, the construction of the Port of Semarang causes changes in current and sediment transportation patterns, leading to erosion and deposition of sediments in various areas in the waters of Demak. Therefore, it is crucial to study hydrodynamics and sedimentation characteristics in managing coastal resources in the region. The present research aims to model the hydrodynamics characteristics (current speed and directions) using oceanographic data on waves, tides, and bathymetry. The study was conducted between May and December 2017. The results showed that the wave height was between 0.5 - 1.25 m with an average wave height of 0.5 -0.79 m and the direction of the wave blowing west-east following the current season. The average current speed in the western season is 5-15 cm s-1, and the average current speed in the east season is 5.9-8.8 cm s-1 with the direction of the current following the wind and the prevailing current. The average tidal height that occurs in the waters of Bedono Demak is an average tidal height of 0.6 m, with the highest tide of 0.9 m and the lowest of 0.3 m. The dominant sediment characteristic is dominated by silt and clay..
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Abstract : Many lightweight materials are required to improve many advancements such as the travel distance of vehicles. Composites are required to be light, strong and if possible, economical so it may be used to increase the lightweight properties of vehicles and other lightweight applications. Indonesia has a variety of natural fibers such as rice straw and Ijuk palm fibers that are abundant and relatively cheap. This study aims to understand the character of the fibers when utilized in composites. Composites are made from resin with different contents of carbon fibers, rice straw fibers and Ijuk fibers. The products are then tested using load, tensile, impact, density and porosity tests. Samples showed that composites are able to withstand a maximum load of 680.79 kgf and tensile test of 12.90 N/mm² from straw fiber composite and 768.24 kgf and tensile test 14.47 N/mm² from Ijuk composites. Impact tests have also shown a maximum impact of 0.189 J/mm² and 0.132 J/mm² for rice straw and Ijuk fibers respectively. There are different variations in density and porosity due to the size of the fibers. The values indicate that it is possible to manufacture the natural fibers and carbon fibers into composites..
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Abstract : Graduation project architectural jury is the most crucial event in the life of the architecture student. Therefore, students are keen to perform on this day as optimally as possible. In line with this, this study is concerned with the development of architectural design learning and aims to present a framework for teaching jury and design skills via remote communication using minicourses, as well as to investigate its impact on students’ performance. This empirical study was conducted in the summer vacation of 2020 during the COVID-19 lockdown and was examined through a structured questionnaire directed to students’ study content and a structured rubric of faculty jurors. The data garnered was analysed using descriptive and inferential statistics, the findings of which having the potential to develop the design teaching policies for Egyptian schools of architecture..
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Abstract : Architectural education needs to incorporate the available means to acquire the necessary skills for the practical field and develop them. Architectural criticism is a significant skill that could help the student to learn the architectural design. Most of architectural criticism courses relay on the theoretical teaching in isolation from the practical application and the architectural design process. This study is concerned with integrating the teaching of architectural criticism with the development of architectural design skills an assess the effect of this in improve the students’ design skills. In this regard, the paper develops an effective framework to teach architectural criticism. The presented framework integrates several strategies such as introducing theoretical background, group discussion, teamwork and competition-based project. The proposed framework has been implemented on the third-year students in the architectural department in Nile higher institute of engineering and technology, Mansoura, Egypt. The conducted experiment reveals that the practicing of criticism in the classroom could increase students’ capabilities in architectural design. The evaluation of the experiment based on students’ assessment questionnaire covering different stages of the framework. Based on this evaluation some amendments have been recommended to improve the framework and formulate the final version of the course framework. The evaluation and discussion of the results could improve a cohesive architectural criticism curriculum and teaching framework..
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