Kazi Sajedur Rahman , Camellia Doroody , Puvaneswaran Chelvanathan , Norasikin Ahmad Ludin , Mohd Adib Ibrahim , Nowshad Amin
{"title":"Exploring the impact of deposition pressure in CdTe thin film solar cells fabrication","authors":"Kazi Sajedur Rahman , Camellia Doroody , Puvaneswaran Chelvanathan , Norasikin Ahmad Ludin , Mohd Adib Ibrahim , Nowshad Amin","doi":"10.1016/j.asej.2024.103255","DOIUrl":"10.1016/j.asej.2024.103255","url":null,"abstract":"<div><div>Cadmium Telluride (CdTe) is a potential material for thin-film solar cell fabrication due to its good optoelectronic characteristics, widespread availability, and inexpensive manufacturing costs. However, optimizing the deposition process to generate high-quality CdTe devices remains a challenge since deposition factors such as pressure have a substantial impact on the structural, optical, and electrical properties of the films, eventually influencing device performance. This study explores the effects of deposition pressure during the Close-Spaced Sublimation (CSS) process on the structural, morphological, optical and electrical characteristics of CdTe thin films, with an emphasis on pressures ranging from 1 to 10 Torr. High-quality CdTe films with large grain sizes (∼3 µm), cubic (111) preferential crystallite orientation, low dislocation density, and decreased strain are grown at deposition pressures ranging from 1.5 to 2 Torr, according to structural studies. These properties are appropriate for producing high-performance p-type CdTe absorber layers for solar cells. The optimized films has a band gap of 1.49 eV, a Voc of 0.64 V, a Jsc of over 18 mA/cm<sup>2</sup>, and solar cell efficiencies above 5 % under normal AM1.5 conditions. Films deposited at higher pressures (≥5 Torr) exhibit poor electrical performance, including poorer carrier mobility, higher recombination losses, and low Jsc due to carrier dispersion and grain boundary defects. This work emphasizes the importance of deposition pressure in managing the balance of crystallinity, grain size, and carrier concentration, all of which are required for optimal solar cell performance. The findings present a systematic approach for optimizing CSS deposition parameters in order to achieve higher-efficiency CdTe thin-film solar cells. Furthermore, this study provides the groundwork for future research focusing on pressure-dependent manufacturing processes and post-deposition treatments to increase the efficiency, stability, and scalability of CdTe-based solar cells.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"16 2","pages":"Article 103255"},"PeriodicalIF":6.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143177841","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":"The role of urban furniture in promoting gender equality and static social activities in public spaces","authors":"Reza Askarizad , Jinliao He","doi":"10.1016/j.asej.2024.103250","DOIUrl":"10.1016/j.asej.2024.103250","url":null,"abstract":"<div><div>Urban furniture plays a crucial role in shaping public spaces, influencing how people interact and engage in social activities. Its design may impact gender equality by either facilitating or hindering equal access to public amenities for both men and women. The entrenched constraints on equal opportunities for women in establishing social activities, particularly in ideologically traditional developing countries like Iran, create observable disparities in the usage of public amenities. This research aimed to develop a comprehensive framework fostering equal opportunities for both men and women in static social activities around street furniture. To achieve this, the research employed a mixed-methods approach. The study combined empirical field observations, space syntax analysis, and interviews with users of public spaces. The space syntax analysis was used to evaluate spatial integration and connectivity, while interviews provided qualitative insights into how men and women interact with urban furniture. Observational data helped identify patterns in the use of street furniture by different genders. The results indicated that street furniture positively influences the social logic of space by enhancing spatial integration and connectivity, thus improving overall accessibility to public spaces for social activities. However, a significant gender imbalance was observed, with men predominantly using street furniture more frequently than women. This disparity highlights conflicting perspectives on gender equality in public space usage. The findings suggest that achieving a more equitable gender distribution in public spaces requires designing street furniture that reduces visual integration and connection while increasing the visual clustering coefficient and entropy, thereby creating more inclusive environments.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"16 2","pages":"Article 103250"},"PeriodicalIF":6.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143178048","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}
Naveen Dhandapani , Karthik Arul , Ganapathy Kalyanasundaram , Laxana Sourirajan , Beena Stanislaus Arputharaj , Qasem M. Al-Mdallal , Mohammad Mukhtar Alam , Balaji Ganesan , Vijayanandh Raja
{"title":"A Hybrid Troposkein Wind Turbine with Piezoelectric Energy Harvesting Patches and Solar Panels : Design and Performance Evaluations","authors":"Naveen Dhandapani , Karthik Arul , Ganapathy Kalyanasundaram , Laxana Sourirajan , Beena Stanislaus Arputharaj , Qasem M. Al-Mdallal , Mohammad Mukhtar Alam , Balaji Ganesan , Vijayanandh Raja","doi":"10.1016/j.asej.2025.103277","DOIUrl":"10.1016/j.asej.2025.103277","url":null,"abstract":"<div><div>The Troposkein wind turbine (TWT) is analyzed and developed from its inception. Classic aerofoils are investigated for wind turbines because of their low sensitivity to Reynolds Number. This study aims to determine the most efficient design for a TWT by adjusting the blade profile, number of blades, and aerofoils. Three comprehensive investigations have demonstrated that aerofoils based on the National Advisory Committee for Aeronautics (NACA)-633108 have a higher energy extraction capacity compared to other surfaces. In addition to these enhancements, the “Hybrid Concept” utilizes piezo-electric patches and solar panels to enhance the generation of electricity from TWT. The TWT model requires the use of substantial hybrid energy extraction procedures for energy results with an average power of 2 kW. The hybrid energy extraction functions are structurally facilitated by the combination of S-glass fibre composite and GY-70-based carbon fibre composite. Therefore, the utilization of hybrid energy extraction renders TWT a highly effective energy harvester.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"16 2","pages":"Article 103277"},"PeriodicalIF":6.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143234240","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}
Abdullah Al Mahfazur Rahman , Mohammad Tariqul Islam , Md. Moniruzzaman , Haitham Alsaif , Abdulwadoud A. Maash , Mohamed S. Soliman
{"title":"A highly absorptive ultra-wideband nanoscale metamaterial absorber for solar energy harvesting from ultraviolet to Infrared spectrum","authors":"Abdullah Al Mahfazur Rahman , Mohammad Tariqul Islam , Md. Moniruzzaman , Haitham Alsaif , Abdulwadoud A. Maash , Mohamed S. Soliman","doi":"10.1016/j.asej.2024.103229","DOIUrl":"10.1016/j.asej.2024.103229","url":null,"abstract":"<div><div>This paper introduces a metamaterial absorber (MMA) with a unique design, exhibiting exceptional absorption capabilities across a wide range of wavelengths including ultraviolet, visible, and infrared. The MMA unit cell, measuring 1000 × 1000 × 165 nm<sup>3</sup>, utilizes tungsten for resonating patch and ground layers, while Quartz performs as the substrate. The design enables absorption peaks of 99.80 %, 95.26 %, and 94 % at 423 nm, 666 nm, and 835 nm wavelengths correspondingly. The study delves into the absorption mechanism by examining the electric field, magnetic field, surface current, and effective parameter analysis. The MMA exhibits polarization insensitivity from 0° to 60° in both transverse electric and magnetic modes with minimal cross-polarization effects verified through polarization conversion ratio analysis. Including 90.08 % average absorption for a bandwidth of 516 nm spanning from ultraviolet to infrared spectra and a solar absorption efficiency of 90.05 %, this MMA holds promise for applications in solar energy harvesting.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"16 2","pages":"Article 103229"},"PeriodicalIF":6.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143178726","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":"Thin wire and circular disk resonator MXene solar absorber optimized using Machine learning for renewable energy applications","authors":"Ammar Armghan , Raj Agravat , Shobhit K. Patel , Khaled Aliqab , Meshari Alsharari","doi":"10.1016/j.asej.2025.103284","DOIUrl":"10.1016/j.asej.2025.103284","url":null,"abstract":"<div><div>Investigated a range of solar absorber configurations made from different materials in an effort to maximize energy output and reduce energy losses in the context of renewable energy sources, especially solar energy. In this study, two-dimensional MXene was used as a resonator based on the Tungsten (W) substrate in thin wire and circular disk integration resonator MXene-based solar absorber (TWCDIRMSA). The design of the resonator combines a thin wire with a circular disk. The TWCDIRMSA has 90 % absorption with a 1750 nm wideband and 96 % absorption with a 930 nm wideband. The solar absorber structure analyzed AM 1.5 irradiation and 91.9 % achieved absorption. This solar absorber achieved absorption rates of 88.35 % at UV, 92.66 % at VIS, 89.56 % at NIR, 96.29 % at MIR, and 97.76 % at FIR spectra respectively. A variation in electric and magnetic intensity with colour-changing was also investigated and 94.37 % absorption by design in the 200–3000 nm wavelength region. The implementation of machine learning (ML) aims to reduce simulation time by one-fourth when compared to traditional methods while also reducing other simulation requirements, with the investigation demonstrating the ML model’s highest achieved R<sup>2</sup> value of 0.94594 and a mean squared error of 1.294 × 10<sup>-4</sup> under parameter variation. This proposed solar absorber polarization is insensitive to an incident angle of up to 70 degrees and a comparison with previous work is also presented in the table. With these remarkable abilities, this TWCDIRMSA has particular uses in solar inductions.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"16 2","pages":"Article 103284"},"PeriodicalIF":6.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143177013","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":"Enhancing virtual indoor environment and energy efficiency with real-time BIM and Unreal Engine integration in building lighting design","authors":"Mert İzmirlioğlu, Hatice Sözer","doi":"10.1016/j.asej.2024.103249","DOIUrl":"10.1016/j.asej.2024.103249","url":null,"abstract":"<div><div>The lighting system is one of the fundamental energy systems for buildings. In the traditional approach, designers simulate their predesign on computer-aided software to create a convenient lighting environment, in which users cannot feel the lighting effects and experience the lighting scenarios until the design setup stage.</div><div>Recently, with the help of the BIM platform and 3D modeling, both design teams and users can evaluate and visually experiment with the project. Users can more easily grasp the details of the project through the 3D model. In this way, the design development process is carried out more efficiently by design teams and users. However, some BIM-based lighting simulation software can only provide static outputs without any interaction between the users and the environment.</div><div>Further, real-time lighting design with dynamic results will make the design development process efficient, where users will visually feel daylight and artificial light, and experience lighting scenarios with various shading and light control options. This decreases the risk of redesign and revision, which is extremely time-consuming and reduces the efficiency of the lighting design. Therefore, this article proposes a lighting design approach on the integration of BIM and a game engine called Unreal Engine (UE4) for dynamic and user experience- based lighting design.</div><div>The process flow involves creating a BIM model in Autodesk Revit and exporting it in IFC file format. The IFC file is imported into the Dialux EVO software. At the same time, the BIM Model is converted to the appropriate file format via the Datasmith converter that enables data transformation and is imported into UE4. Once the IES data of the luminaires are imported into UE4, the arrangement of lighting luminaries is done in the model. Illuminance level measurements are carried out with the help of HDR mode. For the verification of the calculation results, the lighting design in UE4 is manually transferred to DialuxEVO and the lighting calculation is carried out for validation of UE4 measurements. Subsequently, the effect of daylight on the illuminance level during sunrise and sunset hours is measured in UE4 for three different days predetermined throughout the year, and the measurements are recorded in a table.</div><div>In the research, artificial lighting is utilized as a secondary source only when natural daylight is insufficient to achieve maximum daylight utilization. The daylight simulation was conducted under Clear Sky conditions, utilizing a historic building located in the Datça district of the Southern Aegean region of Turkey as a reference. The analysis focused on the sunrise and sunset hours, which are known to have relatively lower levels of available daylight, in order to maximize the use of natural daylight. Results show that between 20% and 24% improvements could be achieved by utilizing real-time evaluation technics.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"16 2","pages":"Article 103249"},"PeriodicalIF":6.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143178047","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":"Sustainable Reimagining of urban Habitats: Navigating Iraq’s housing crisis through Socio-Technological and Environmental approaches","authors":"Amjad Almusaed , Asaad Almssad , Asaad Alasadi , Fatima Al-Asadi","doi":"10.1016/j.asej.2025.103280","DOIUrl":"10.1016/j.asej.2025.103280","url":null,"abstract":"<div><div>The article rigorously analyzes Iraq’s housing dilemma using an interdisciplinary framework combining socio-technological advancements and environmental initiatives. The article promotes sustainable urban development by tackling increasing urbanization, infrastructural deficiencies, and ecological deterioration. The novelty is in the empirical assessment of innovative sustainable building methods, community-focused urban planning, and the implementation of renewable energy, specifically adapted to Iraq’s distinct socio-political and environmental circumstances. The article presents an innovative framework integrating smart city technology with sustainable construction practices, providing a holistic approach to improving housing quality and fostering ecological resilience. The findings substantially enhance the discussion on sustainable urbanization by offering policymakers practical insights to alleviate housing crises and promote enduring urban sustainability. The implications are worldwide since the proposed approaches and frameworks function as scalable models for tackling urban development issues in increasingly urbanizing areas.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"16 2","pages":"Article 103280"},"PeriodicalIF":6.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143177014","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 real–time distributed optimization control for power sharing and voltage restoration in inverter–based microgrids","authors":"Asad Khan , Muhammad Mansoor Khan , Jiang Chuanwen , Danish Khan","doi":"10.1016/j.asej.2025.103288","DOIUrl":"10.1016/j.asej.2025.103288","url":null,"abstract":"<div><div>This paper presents a distributed control framework for grid–forming (GFM) distributed generations (DGs), considering the objectives of active/reactive power sharing and load feeder voltage regulation in inverter–based microgrids (MGs). Battery energy storage systems (BESSs) are controlled GFM sources while solar–powered DGs are working in grid–following (GFL) mode to provide active power support. The proposed method simplifies the global optimization problem into multiple sub–optimal problems by virtually segregating each GFM source into two decoupled sources. Each sub–problem, containing at most two GFM sources and multiple GFL sources with a single distributed agent, is solvable independently using local and neighboring node information. This feature substantially minimizes computational and communication resources, allowing for solutions using low–cost digital signal processors (DSPs). Moreover, the highly distributed nature of the proposed search algorithm ensures fast solution convergence and real–time implementation in multi–agent systems (MAS). Compared to existing segregation methods like Alternating Direction Method of Multipliers (ADMM) and Augmented Lagrangian Alternating Direction Inexact Newton (ALADIN) schemes, which segregate the network into complex sub–networks involving several GFM sources, the proposed approach is more suitable for small–scale inverter–based MGs. The framework’s effectiveness is validated through analytical formulation, MATLAB simulations, and realistic experimental results within a multi–feeder test MG system, which includes numerous load feeders and sparsely available GFM DGs, a scenario that has received limited attention in existing literature.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"16 2","pages":"Article 103288"},"PeriodicalIF":6.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143177015","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}
Maryam F. Abdulateef , Firas A Majeed , Hoda A.S. Al-Alwan , Mohammed B. Qasim
{"title":"Assessing canyon geometry effect on the thermal comfort in a hot semi-arid climate: Baghdad city as case study","authors":"Maryam F. Abdulateef , Firas A Majeed , Hoda A.S. Al-Alwan , Mohammed B. Qasim","doi":"10.1016/j.asej.2024.103247","DOIUrl":"10.1016/j.asej.2024.103247","url":null,"abstract":"<div><div>To establish a new urban area, a wide and a multi-discipline knowledge concerning the direct relationship between urban geometry parameters and the resulted outdoor thermal environment, should be provided. This can prevent designers and users, especially in extreme climates, from serious consequences such as external environmental discomfort and increased energy consumption outside and inside the buildings. The review of related studies reveals that there is limited data concerning the reciprocal relationship between canyon geometry parameters and the thermal comfort in a hot semi-arid climate. Accordingly, the paper seeks to provide the required knowledge concerning this aspect by testing and comparing the effect of canyon geometry parameters on some outdoor thermal indexes, using ENVI-met microclimate simulation software. The selected indexes of the outdoor thermal comfort include physiological equivalent temperature (PET), and façade temperature (Tf). The effect of modifying canyon aspect ratio (high and low), and orientation (north–south, east–west, northeast-southwest, and northwest-southeast) on these indexes have been tracked. The paper investigates the aspect ratio effect on PET, the orientation effect on PET, and the aspect ratio effect on Tf. The research concluded that the deep canyon (Dc) witnessed lower PET values than the wide canyon (Wc) during the daytime. East-west oriented canyons are excluded from this result as no significant effect on PET was recorded. The most noticeable difference (about 12.8 °C) was recorded at 8:00 between NE-SW deep and wide canyons. During the night hours, the opposite case happens as PET in (Wc) becomes lower than (Dc) in all orientations. Measuring the second parameter reveals the minimal effect of canyon orientation on PET in wide canyons (Wc). Deep canyons witness more obvious thermal differences. The lowest and highest PET values were recorded in NE-SW and EW-oriented deep canyons (differences about 15 °C at 8:00). Concerning the effect of aspect ratio on facade temperature (Tf), the results reveal that increasing the aspect ratio (Dc) can significantly decline this parameter. The most significant role of this at PET was recorded at the southeast façade of deep canons (Dc) which was about 30 °C lower than those of Wc in the late morning. Adopting such results in the urban planning and design process would lead to have more sustainable canyons which successfully interact with their local environment and professionally avoid its disadvantages.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"16 2","pages":"Article 103247"},"PeriodicalIF":6.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143177017","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 cash flow in construction portfolios: A metaheuristic approach from the organization’s perspective","authors":"Reza Rajabi , Siamak Haji Yakhchali","doi":"10.1016/j.asej.2024.103259","DOIUrl":"10.1016/j.asej.2024.103259","url":null,"abstract":"<div><div>The construction industry faces significant financial risks due to inflationary pressures and economic boom-and-bust cycles, which can result in negative cash flow and reduced profitability for project portfolios. Although various cash flow optimization models exist, many do not adequately address the combined effects of inflation, economic boom-and-bust cycles, and capital injection strategies. This gap limits their effectiveness in real-world conditions, particularly for organizations managing large construction portfolios.</div><div>This study aims to bridge this gap by developing a comprehensive model for optimizing cash flow in construction project portfolios from the organization’s perspective. The model integrates key factors such as construction cost inflation, house price inflation, and multi-stage capital injections, ensuring that cumulative negative cash flow does not exceed the available capital. Metaheuristic algorithms—including Differential Evolution (DE), Particle Swarm Optimization (PSO), and Genetic Algorithm (GA), Water Cycle Algorithm (WCA), and Teaching-Learning-Based Optimization (TLBO)—are employed to solve this NP-complete problem and maximize profitability by determining the optimal start and sale times for projects.</div><div>The model was tested on real-world construction portfolios, demonstrating a substantial improvement in cash flow management compared to traditional methods. The DE algorithm improved the objective function by up to 17.2% for larger portfolios. Sensitivity analyses revealed that portfolio performance is strongly influenced by the magnitude of capital injections and the timing of portfolio initiation within economic cycles.</div><div>Overall, this study provides a robust decision-support tool for managing financial risks, offering practical insights into optimizing cash flow and maximizing profitability in the face of inflation and market volatility.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"16 2","pages":"Article 103259"},"PeriodicalIF":6.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143177020","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}