Ain Shams Engineering Journal最新文献

{"title":"Curvature sensitive model of isogeometric collocation for multiple nonlinear equilibria of reinforced porous curved microbeams","authors":"Saeid Sahmani ,&nbsp;Babak Safaei ,&nbsp;Kamila Kotrasova","doi":"10.1016/j.asej.2024.103042","DOIUrl":"10.1016/j.asej.2024.103042","url":null,"abstract":"<div><div>This research examination aims to demonstrate for the first time the multiple nonlinear equilibria attributed to the curvature sensitivity in thermomechanical stability characteristics of clamped porous curved microbeams. The modeled microstructures are reinforced by graphene nanoplatelet including the roles of couple and nonlocal stress tensors. In this regard, curved microbeams possessing different magnitudes of curvature are taken into account which classified as microbeams with small, medium, and large curvatures. Based upon a power law, the porosity is graded in thickness direction, along which the graphene nanoplatelet reinforcements are dispersed uniformly. Through implementation of the size dependencies within the formulations of the third-order shear flexibility, an efficient curvature sensitive model of isogeometric collocation is established. The employed numerical approach embodies the Greville abscissae associated with the employed spline space and knot vector. It comes to the conclusion that for a higher value of the porosity index, the prominence attributed to the both effects of the couple and nonlocal stress tensors diminishes on the lateral loads at the upper limit points for the reinforced porous microbeam with small curvature, while it intensifies on the lateral loads at the upper limit points for the reinforced porous microbeams with medium and large curvatures. This venture becomes opposite on the lateral loads at the lower limit points.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"15 11","pages":"Article 103042"},"PeriodicalIF":6.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fire prevention and mitigation technologies in high-rise buildings: A bibliometric analysis from 2010 to 2023","authors":"Saleh Abu Dabous ,&nbsp;Amir Shikhli ,&nbsp;Sundus Shareef ,&nbsp;Emad Mushtaha ,&nbsp;Khaled Obaideen ,&nbsp;Imad Alsyouf","doi":"10.1016/j.asej.2024.103010","DOIUrl":"10.1016/j.asej.2024.103010","url":null,"abstract":"<div><h3>Purpose</h3><div>This study provides a comprehensive bibliometric analysis for research in the area of fire prevention and mitigation in high-rise buildings, an emerging crucial subject. The analysis covers the period between 2010 and 2023, with the main goal of classifying and evaluating the efficacy of fire prevention and mitigation technologies.</div></div><div><h3>Methods</h3><div>The current study contributes a methodological approach for analyzing fire safety measures and highlighting the critical necessity for multidisciplinary approaches in enhancing fire safety protocols, with a special focus on the integration of advanced fire detection, suppression, and evacuation technologies. The investigation indicates a steady 10 % growth rate in scholarly production on this topic.</div></div><div><h3>Results</h3><div>Research on active fire prevention technologies has focused on the technologies including; 1) water mist suppression, 2) unmanned aerial vehicles, 3) Artificial Intelligence (AI) algorithms, and 4) Internet of Things (IoT) frameworks, while research on passive technologies has trended toward fire compartmentation and fire-resistant materials. The study identifies 6 passive technologies and 14 active technologies, with active technologies focusing on water mist suppression, AI algorithms, and IoT frameworks. On the other hand, passive technologies focus on risk assessment, fire protection, and management.</div></div><div><h3>Conclusions</h3><div>The current study analyzes the role of risk assessment, fire protection, and management in the development of the field of fire mitigation and prevention. The study highlights research collaboration toward reducing risk and fatalities by fire prevention and mitigation solutions. The US and China have the highest collaboration in these technologies, while the UK and the US have the highest publications.</div></div><div><h3>Research implications</h3><div>The provided analysis ultimately serves as guidance for stakeholders involved in the design, policy-making, and implementation of fire safety measures in urban high-rise environments, and can give insight on future research direction toward effective strategies and technologies for fire mitigation and prevention in high-rise buildings.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"15 11","pages":"Article 103010"},"PeriodicalIF":6.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Navigating challenges in the sustainable development of urban brownfields: A PLS path modeling perspective","authors":"Dan He ,&nbsp;Rosilawati Zainol ,&nbsp;Nor Shahida Azali","doi":"10.1016/j.asej.2024.103002","DOIUrl":"10.1016/j.asej.2024.103002","url":null,"abstract":"<div><div>The sustainable redevelopment of urban brownfields represents a complex interplay of socio-economic, environmental, and regulatory factors. This study addresses the research problem of quantifying the challenges inherent in the sustainable redevelopment process and hypothesizes that these challenges vary significantly across different domains such as governance, environmental impact, financial economics, technical operations, and legal regulations. Employing Partial Least Squares Structural Equation Modeling (PLS-SEM), the study aims to explore and quantify these challenges, providing actionable insights for policymakers and stakeholders. Focusing on brownfield projects within Chengdu’s five urban districts, a survey was conducted spanning from November 1, 2023, to March 1, 2024, with a total of 436 respondents participating. Drawing upon an extensive dataset encompassing governance, environmental impact, financial economics, technical operations, and legal regulations, we provide a comprehensive analysis of their influence on the sustainable development of urban brownfields. The results indicate that legal and regulatory challenges exert the most significant negative impact on sustainable development, necessitating policy reforms and strategic initiatives. This research contributes to the urban planning literature by offering a nuanced understanding of the obstacles faced in urban brownfield redevelopment and highlighting the potential pathways to navigate these challenges.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"15 11","pages":"Article 103002"},"PeriodicalIF":6.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Retraction Notice to “Effect of tailwater depth on non-cohesive earth dam failure due to overtopping” [Ain Shams Eng. J. 14(8) (2023) 102034]","authors":"Shaimaa Aman ,&nbsp;Mohamed Abdelrazek Rezk ,&nbsp;Rabiea Nasr","doi":"10.1016/j.asej.2024.103004","DOIUrl":"10.1016/j.asej.2024.103004","url":null,"abstract":"","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"15 11","pages":"Article 103004"},"PeriodicalIF":6.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamic channel estimation in large-scale massive MIMO systems with intelligent reflecting surfaces: Leveraging Khatri-Rao factorization and bilinear alternating least squares","authors":"E. Elakkiyachelvan ,&nbsp;R.J. Kavitha","doi":"10.1016/j.asej.2024.103043","DOIUrl":"10.1016/j.asej.2024.103043","url":null,"abstract":"<div><div>In large-scale massive MIMO systems with intelligent reflecting surfaces (IRS), dynamic channel estimation (CE) is essential for optimizing the system performance and ensuring reliable communication. Traditional channel estimation techniques are not suitable for IRS-assisted systems due to the unique characteristics of Intelligent Reflecting Surfaces channels. To address the channel estimation problem in such dynamic environments, this paper introduces two novel channel estimation methods: Khatri-Rao Factorization (KRF) and Bilinear Alternating Least Squares (BALS). The first method uses KRF to efficiently solve rank-1 matrix approximation problems with a closed-form solution. The second method employs an iterative alternating estimation scheme. By disentangling these key channel matrices’ estimates, both methods provide more accurate and robust channel estimation, essential for optimizing communication system performance in challenging environments. The proposed CE-KRF-BALS-MIMO method is evaluated under performance metrics like Bit error rate (BER), Signal Noise Ratio (SNR), Normalized Mean Square Error (NMSE) Spectral Efficiency (SE), and Computational Complexity.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"15 11","pages":"Article 103043"},"PeriodicalIF":6.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance evaluation of reinforced concrete culvert under monotonic loading","authors":"Ajibola Ibrahim Quadri ,&nbsp;Adebisi Lateef Oyedeji ,&nbsp;Williams Kehinde Kupolati ,&nbsp;Chris Ackerman ,&nbsp;Jacque Snyman ,&nbsp;Julius Musyoka Ndambuki","doi":"10.1016/j.asej.2024.103001","DOIUrl":"10.1016/j.asej.2024.103001","url":null,"abstract":"<div><div>Reinforced concrete culverts frequently fail nowadays owing to the increase in demand for their use in traffic, rapid urban population growth, and economic activities that connect urban and rural life. Although culverts may appear to be simple structures, the applied load during their service life is often complex. Thus, an experimental investigation has been built to understand the failure of reinforced concrete culverts of different shapes under increasing monotonic loadings. The corrosion effect of reinforcement in concrete culverts was also considered using Sodium Chloride (NaCl) as a corrosion agent. A total of twelve (12) specimens were considered. Applicability of FEM using reinforced concrete Model of 3-dimension software was also adopted to understand the failure of the culverts. Compression and tension damage are common to all the shapes of culverts considered resulting in quasi-brittle failure. Moreover, the arch concrete culvert resisted more applied load due to the arch action developed with an enhanced capacity than the other shapes, with failure capacity of 28% and 87%, more than the rectangular and circular culvert, respectively. Inadequate shear link led to shear brittle failure at the corner of the rectangular culvert. Corrosion effect has also been observed to reduce the capacity of the culvert resulting in sudden damage under the applied load. Furthermore, there is a good concordance between the experiment and the FEM analysis under increasing loading. The conditions of the traffic of the areas to install culverts should be evaluated, while the vehicular speed of crossing the existing culvert in service should be checked to avoid variable-induced stresses which could reduce the service life of the culvert.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"15 11","pages":"Article 103001"},"PeriodicalIF":6.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimizing power system efficiency and costs in smart buildings with renewable resources","authors":"Ge Sun","doi":"10.1016/j.asej.2024.103014","DOIUrl":"10.1016/j.asej.2024.103014","url":null,"abstract":"<div><div>The increasing industrial development and energy demand have necessitated the maximization of available energy use and the deployment of renewable resources. Effective energy management, optimal modeling, and efficient planning are essential to transform the power system into a high-efficiency, optimal model. This study focuses on the initial step of modeling smart buildings (SBs) equipped with non-responsive devices and renewable photovoltaic sources. A comprehensive energy management (EM) plan is formulated for these buildings, incorporating the KNX protocol for solar energy system management. Batteries are integrated into the building model to store energy during periods of low consumption and serve as generators during peak load conditions, with the primary goal of minimizing power system losses and related costs. To address the complexity of this model, whale optimization algorithm (WOA) is employed for optimization. Optimal candidate buses are selected for interconnected building management based on a suggested sensitivity analysis to minimize losses. Cost performance is then assessed, considering energy production and sales. The findings indicate that substantial control of operating costs can be achieved through strategic management of battery charging and discharging, as well as the utilization of photovoltaic units. The proposed model is evaluated across various scenarios using a test system comprising 30 modified system, demonstrating its effectiveness in enhancing energy efficiency and management.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"15 11","pages":"Article 103014"},"PeriodicalIF":6.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evolving dynamics of home renovation in Dubai: A case study of The Springs community","authors":"Chuloh Jung ,&nbsp;Gamal El Samanoudy ,&nbsp;Naglaa Sami Abdelaziz Mahmoud","doi":"10.1016/j.asej.2024.103018","DOIUrl":"10.1016/j.asej.2024.103018","url":null,"abstract":"<div><div>This study focuses on the evolving dynamics of home renovation in Dubai, particularly in The Springs community. It explores the transition from new constructions to renovations in the construction sector, motivated by economic, environmental, and market factors. The Analytic Hierarchy Process (AHP) was utilized to assess user preferences in renovations. A survey conducted among residents of The Springs gauged renovation priorities, examining cost, performance, design, and planning aspects. Results indicated cost as a significant factor in renovation decisions. Still, combined elements of building performance (13.49% for Building Envelope Performance and 15.21% for MEP Performance), planning (11.27% for Space Optimization), and design (5.16% for Interior Design) also proved crucial. The study found a strong preference for optimizing space (48.8% importance in architectural planning) and interior design (66.2% importance in design aspects). Economic factors like construction cost and building value enhancement were also highlighted, with construction cost accounting for 32.9% and an increase in building value for 31.7% in cost considerations. The findings emphasize the need for a user-centric approach in renovations, integrating economic viability with performance, planning, and design enhancements. The study suggests architects and developers should consider these diverse user preferences and sustainable practices in renovation planning. The research advocates for comprehensive renovation strategies that balance economic, functional, and aesthetic aspects. The insights from this study are pertinent for guiding future renovation strategies in Dubai, ensuring renovations meet user needs and market trends.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"15 11","pages":"Article 103018"},"PeriodicalIF":6.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Different approaches for sustainable recovery of precious metals from electronic wastes: Techno-economic evaluation and future perspectives","authors":"Lei Ji ,&nbsp;Yanlei Song ,&nbsp;Ali Taghvaie Nakhjiri","doi":"10.1016/j.asej.2024.103005","DOIUrl":"10.1016/j.asej.2024.103005","url":null,"abstract":"<div><div>Nowadays, it is estimated that approximately 50–60 million metric tons of electronic waste (e-waste) is produced all around the world, in which modern countries are responsible for the generation of almost half of them. Therefore, finding novel, green and environmentally-benign techniques for the sustainable recovery of precious metals (PMs) from e-waste has been an interesting topic of research in many industries. Ionic liquids (ILs) and deep eutectic solvents (DESs) have recently been considered as green solvents that can overcome the detrimental effects of traditional organic solvents on environment. This review study intends to exhaustively discuss the current advancements toward the use of various types of ILs and DESs on the recovery of PMs for overcoming the challenges of sustainable supplement. As another highlight of this review paper, a detailed techno-economic analysis has been done and then after, the operational privileges and environmental effects of the PMS recovery techniques using ILs and DESs were discussed comprehensively. At the end, future perspectives and considerations to enhance the sustainability of PMs recovery technologies have been proposed.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"15 11","pages":"Article 103005"},"PeriodicalIF":6.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A starting framework for urban AI applications","authors":"Mennatullah Hendawy ,&nbsp;Lamiaa Ghoz","doi":"10.1016/j.asej.2024.102987","DOIUrl":"10.1016/j.asej.2024.102987","url":null,"abstract":"<div><div>There has been a growing concern about the ethical implications of Artificial Intelligence (AI) in urban environments. Scholars have highlighted the dual nature of AI, which can both enhance urban sustainability and pose significant privacy risks. The literature acknowledges that AI introduces specific challenges in urban contexts. However, there remains a gap in comprehensive sector-specific ethical frameworks tailored to the unique challenges posed by AI applications in cities. This study aims to fill this gap by proposing a starting framework for the ethics of Urban AI applications, providing principles to guide responsible AI development and deployment in urban settings. The study employed a two-phase methodology: a content analysis of 100 AI ethics documents to develop a preliminary framework, followed by a survey of experts and stakeholders to validate and expand this framework by identifying urban-specific risks and ethical considerations. The developed ethical framework for Urban AI applications provides a starting point to pave the way for ethical and sustainable urban AI systems that enhance the quality of life for all city residents.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"15 11","pages":"Article 102987"},"PeriodicalIF":6.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}