Archive of

Advanced Engineering Science

Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : AES-24-07-2023-599

Abstract : This article presents a comparison of two artificial intelligence techniques used for automatic and continuous vehicular parking control. The techniques employed are Artificial Vision and Convolutional Neural Networks (CNN). The first technique is based on the analysis of images and videos of parking lots using the OpenCV library for computer vision and the Python programming language. It involves identifying and defining the coordinates of the region of interest (ROI) for parking spaces. Using artificial vision, the detection of available or occupied parking spaces is carried out using the Gaussian blur technique, followed by converting the images from RGB to grayscale. Subsequently, the original ROIs and the converted image's ROI are evaluated, and the standard deviation and average are calculated to check if they are above or below a threshold. The second technique utilizes object detectors based on CNN, such as the YOLO (You Only Look Once) architecture, specifically YOLO V7. Each technique was evaluated through tests, yielding an accuracy of 0.88 and 0.82 for precision and sensitivity, respectively, with Convolutional Neural Networks. The results obtained with artificial vision were 0.80 and 0.79 for precision and sensitivity, respectively. Based on the obtained results, better outcomes were achieved with the use of Convolutional Neural Networks..
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : AES-24-07-2023-598

Abstract : With climate change and energy crises worldwide, the demand for energy-saving strategies has become imperative. According to the annual report of the Ministry of Electricity, the buildings sector in Egypt consumes more than 51% of total energy. The type of buildings with the highest consumption is residential buildings. Luxury housing, represented in gated communities, has spread in Egypt. This type of housing has very high rates of energy consumption. Egypt faces a challenge in improving energy strategies, especially after the recent multiple energy crises. Because there is still a lack of government programs to retrofit existing buildings, the owners of luxury houses should be encouraged to implement one or more energy-saving measures by showing them the economic benefits. This study aims to analyze the thermal performance of luxurious housing and investigate the optimal cost-effective retrofitting measures..
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : AES-24-07-2023-597

Abstract : In many ways, composite materials have been widely used in everyday life. However, most of the composite materials that have been successfully developed still use synthetic materials that are not environmentally friendly. In this study, it was intended to obtain environmentally friendly composite materials (GC) by utilizing unmodified and unmodified teak starch and arrowroot starch adhesives. Arrowroot starch modification was carried out using a solution of 1%, 3% and 5% Sodium Tripolyphosphate (STPP). GC material synthesis was done by mixing modified arrowroot starch and teak powder in a 50/50 (% weight) ratio and using hot press machines at 80oC, 3.0 MPa pressure for 10 minutes. An FTIR analysis clearly showed that the intensity of the phosphate (P=O) group in the wavenumber region of 1338 cm-1 for GC materials with modified teak sawdust. Based on the characterization results, it can be concluded that the modified arrowroot starch increased the values of density, strength and bending modulus and reduced the values of moisture content and thickness expansion. The highest increase in density, strength and bending modulus was experienced by GC material with arrowroot starch resin modified with STPP at a concentration of 3%, namely 7.3%, 11.9% and 30.06% respectively. The GC material also experiences the highest moisture content and thickness swelling decrease with arrowroot starch modified with STPP at a concentration of 3%, namely 21.9% and 8.0%, respectively. Although the use of modified arrowroot starch can improve the characteristics of the resulting GC material, the synthetic GC material does not fully meet the standards required by INS 03-2105-2006. Only the synthesized GC material's density value and moisture content can meet the INS 03-2105-2006 standard..
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : AES-23-07-2023-596

Abstract : The Nile River is regarded as one of Egypt's most important national assets, with over 800 urban settlements located along its banks. However, urban transformations and changes in riverfront land use in these settlements are occurring rapidly and in different forms. The riverfronts have not received sufficient study and analysis of the dynamics of their land-use changes, despite being the focus of conflict between many powers. The outcome of this conflict appears through a clear disparity in land use. Therefore, this research paper is a serious step toward understanding the dynamics of change in riverfront land use (spatially and temporally) and their correlation with the population sizes of their settlements. The population size was used as an indication of the temporal development of riverfront settlements. To develop this framework, this study conducts a critical review of the literature related to the processes of changing the uses of riverfront land and then uses a quantitative method and statistical analysis after monitoring all the Nile River settlements and the use of their Nile fronts and classifying them according to population sizes to determine the correlations between these uses and the sizes of the population of their settlements to assist decision-makers and planners in proposing practical methods when conducting development processes in Nile fronts..
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Gongcheng Kexue Yu Jishu/Advanced Engineering Science
Journal ID : AES-18-07-2023-594

Abstract : Structural reinforced concrete (RC) elements incorporating glass fibre-reinforced polymer (GFRP) bars have been claimed to exhibit notable deformability under seismic loading. In this research, an attempt has been made to evaluate the influence of retrofitting with GFRP bars on the behaviour of RC beam-column joints. To this end, eight full scale joints were fabricated and examined under cyclic loading. Eight specimens were cast, out of which two were based on control specimen and the remaining six based on GFRP bonding. The crack propagation and forceā€“displacement hysteresis curves are presented as the main test outputs. Moreover, seismic parameters namely displacement ductility, absorbed energy, stiffness and equivalent damping ratio are compared and discussed. Overall, the results demonstrated that incorporating GFRP retrofitting could enhance cyclic response of joints in terms of ductility, absorbed energy and equivalent damping ratio..
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