Pub Date : 2025-01-01DOI: 10.1016/j.asej.2024.103173
Taki Eddine Seghier , Chavanont Khosakitchalert , Ziwen Liu , Chukwuka Christian Ohueri , Yaik-Wah Lim , Ahmad Fahmi Bin Zainazlan
The architecture, engineering, construction, and operation (AECO) industry has embraced the combination of building information modelling (BIM) and computational algorithms to advance digital transformations. Computational BIM has enabled the development and testing of various BIM-based solutions for the building industry. This study conducted a systematic review of the application of computational BIM through visual programming (VP) in building research. The study employed a hybrid approach of bibliometrics and content analyses using seventy-nine publications filtered from Scopus and Web of Science databases. The bibliometric analysis identified publication frequency trends, journal distributions, country distributions, eminent authors, co-authorship networks, and keyword co-occurrence networks. The content analysis identified six key research themes and four major methodological roles of computational BIM in building research. A research framework is proposed to summarize and articulate the state of the art of computational BIM application in building research, research gaps, and future research directions.
{"title":"From BIM to computational BIM: A systematic review of visual programming application in building research","authors":"Taki Eddine Seghier , Chavanont Khosakitchalert , Ziwen Liu , Chukwuka Christian Ohueri , Yaik-Wah Lim , Ahmad Fahmi Bin Zainazlan","doi":"10.1016/j.asej.2024.103173","DOIUrl":"10.1016/j.asej.2024.103173","url":null,"abstract":"<div><div>The architecture, engineering, construction, and operation (AECO) industry has embraced the combination of building information modelling (BIM) and computational algorithms to advance digital transformations. Computational BIM has enabled the development and testing of various BIM-based solutions for the building industry. This study conducted a systematic review of the application of computational BIM through visual programming (VP) in building research. The study employed a hybrid approach of bibliometrics and content analyses using seventy-nine publications filtered from Scopus and Web of Science databases. The bibliometric analysis identified publication frequency trends, journal distributions, country distributions, eminent authors, co-authorship networks, and keyword co-occurrence networks. The content analysis identified six key research themes and four major methodological roles of computational BIM in building research. A research framework is proposed to summarize and articulate the state of the art of computational BIM application in building research, research gaps, and future research directions.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"16 1","pages":"Article 103173"},"PeriodicalIF":6.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143174848","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}
Pub Date : 2025-01-01DOI: 10.1016/j.asej.2024.103176
Ibtehal Alazman , Manvendra Narayan Mishra , Badr Saad T. Alkahtani , Mati ur Rahman
In this research, we systematically examined the special solutions of the -dimensional evolution equation corresponding to nonclassical symmetries. By employing the identified symmetries, we developed invariant solutions that reveal the underlying structure of the equation and its solutions. Additionally, bifurcation analysis was conducted to understand the qualitative shifts in the system's behavior. We investigated sensitivity to initial conditions and the presence of unusual attractors to better comprehend the system's chaotic dynamics. While invariant solutions provide exact representations of certain dynamical states, bifurcation and chaos analyses offer insights into the system's intrinsic transitions and complexity. This study not only enhances the theoretical understanding of high-dimensional nonlinear evolution equations but also provides a foundation for future applications in various fields where complex processes are modeled by such equations.
{"title":"Exploring the non-classical symmetry, bifurcation with sensitivity analysis of a (3 + 1)-dimensional nonlinear evolution equation","authors":"Ibtehal Alazman , Manvendra Narayan Mishra , Badr Saad T. Alkahtani , Mati ur Rahman","doi":"10.1016/j.asej.2024.103176","DOIUrl":"10.1016/j.asej.2024.103176","url":null,"abstract":"<div><div>In this research, we systematically examined the special solutions of the <span><math><mo>(</mo><mn>3</mn><mo>+</mo><mn>1</mn><mo>)</mo></math></span>-dimensional evolution equation corresponding to nonclassical symmetries. By employing the identified symmetries, we developed invariant solutions that reveal the underlying structure of the equation and its solutions. Additionally, bifurcation analysis was conducted to understand the qualitative shifts in the system's behavior. We investigated sensitivity to initial conditions and the presence of unusual attractors to better comprehend the system's chaotic dynamics. While invariant solutions provide exact representations of certain dynamical states, bifurcation and chaos analyses offer insights into the system's intrinsic transitions and complexity. This study not only enhances the theoretical understanding of high-dimensional nonlinear evolution equations but also provides a foundation for future applications in various fields where complex processes are modeled by such equations.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"16 1","pages":"Article 103176"},"PeriodicalIF":6.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143173965","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}
The novel T-shaped patch antenna with the superstrate approach is planned in the manuscript. The FR-4 dielectric material is used as a superstrate and substrate. The hexagonal-shaped rings are loaded in the superstrate to enable the metamaterial property in the structure. The copper-loaded metamaterial and liquid Sea water-loaded metamaterial are used in the planned antenna which increases the gain and BW of the planned antenna design. Different parametric analyses like the varying height of the superstrate and changing spacing among SRR rings are considered to achieve an optimum response. The analysis concerning S11, gain, and directivity is carried out among simple patch antenna, copper ring loaded structure and seawater loaded structure. The frequency span of 1 GHz to 12 GHz is considered for analysis. The planned designs provide a minimum S11 of −49.16 dB in CMRNGS, a Gain of 6.92 dB in SMRNGS, and a highest directivity of 8.56 dB for 8.83 GHz resonance. The planned design is compared with other papers to check the improvement of this planned antenna design. The Simulated and assessed responses were also compared and analysed. The planned design is suitable for 5G, WLAN, tracking and detection applications.
{"title":"Design and development of hexagonal-shaped copper and liquid metamaterial-loaded superstrate patch antenna for 5G, WLAN, tracking and detection applications","authors":"Meshari Alsharari , Raj Agravat , Sunil Lavadiya , Ammar Armghan , Khaled Aliqab , Shobhit K. Patel","doi":"10.1016/j.asej.2024.103236","DOIUrl":"10.1016/j.asej.2024.103236","url":null,"abstract":"<div><div>The novel T-shaped patch antenna with the superstrate approach is planned in the manuscript. The FR-4 dielectric material is used as a superstrate and substrate. The hexagonal-shaped rings are loaded in the superstrate to enable the metamaterial property in the structure. The copper-loaded metamaterial and liquid Sea water-loaded metamaterial are used in the planned antenna which increases the gain and BW of the planned antenna design. Different parametric analyses like the varying height of the superstrate and changing spacing among SRR rings are considered to achieve an optimum response. The analysis concerning S<sub>11</sub>, gain, and directivity is carried out among simple patch antenna, copper ring loaded structure and seawater loaded structure. The frequency span of 1 GHz to 12 GHz is considered for analysis. The planned designs provide a minimum S<sub>11</sub> of −49.16 dB in CMRNGS, a Gain of 6.92 dB in SMRNGS, and a highest directivity of 8.56 dB for 8.83 GHz resonance. The planned design is compared with other papers to check the improvement of this planned antenna design. The Simulated and assessed responses were also compared and analysed. The planned design is suitable for 5G, WLAN, tracking and detection applications.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"16 1","pages":"Article 103236"},"PeriodicalIF":6.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143175377","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}
Pub Date : 2025-01-01DOI: 10.1016/j.asej.2024.103185
Sirwan A. Aula , Tarik A. Rashid
In the dynamic field of optimisation, hybrid algorithms have garnered significant attention for their ability to combine the strengths of multiple methods. This study presents the Hybrid FOX-TSA algorithm, a novel optimisation technique that merges the exploratory capabilities of the FOX algorithm with the exploitative power of the TSA algorithm. The primary objective is to evaluate the efficiency, robustness, and scalability of this hybrid approach across multiple CEC benchmark suites, including CEC2014, CEC2017, CEC2019, CEC2020, and CEC2022, alongside real-world engineering design problems. The results demonstrate that the Hybrid FOX-TSA algorithm consistently outperforms established optimisation techniques, such as PSO, GWO, and the original FOX and TSA algorithms, in terms of convergence speed, solution quality, and computational efficiency. Notably, the hybrid approach avoids premature convergence and navigating complex search spaces, producing optimal or near-optimal solutions in various test cases. For instance, the algorithm achieved superior performance in minimizing design costs in the Pressure Vessel and Welded Beam Design problems, as well as effectively handling the complex landscapes of the CEC2020 and CEC2022 benchmarks. These results affirm the Hybrid FOX-TSA algorithm as a powerful and adaptable tool for tackling complex optimization problems, particularly in high-dimensional and multimodal landscapes. The integration of statistical analyses, such as t-tests and Wilcoxon signed-rank tests, further supports the statistical significance of its performance improvements.
{"title":"FOX-TSA: Navigating Complex Search Spaces and Superior Performance in Benchmark and Real-World Optimization Problems","authors":"Sirwan A. Aula , Tarik A. Rashid","doi":"10.1016/j.asej.2024.103185","DOIUrl":"10.1016/j.asej.2024.103185","url":null,"abstract":"<div><div>In the dynamic field of optimisation, hybrid algorithms have garnered significant attention for their ability to combine the strengths of multiple methods. This study presents the Hybrid FOX-TSA algorithm, a novel optimisation technique that merges the exploratory capabilities of the FOX algorithm with the exploitative power of the TSA algorithm. The primary objective is to evaluate the efficiency, robustness, and scalability of this hybrid approach across multiple CEC benchmark suites, including CEC2014, CEC2017, CEC2019, CEC2020, and CEC2022, alongside real-world engineering design problems. The results demonstrate that the Hybrid FOX-TSA algorithm consistently outperforms established optimisation techniques, such as PSO, GWO, and the original FOX and TSA algorithms, in terms of convergence speed, solution quality, and computational efficiency. Notably, the hybrid approach avoids premature convergence and navigating complex search spaces, producing optimal or near-optimal solutions in various test cases. For instance, the algorithm achieved superior performance in minimizing design costs in the Pressure Vessel and Welded Beam Design problems, as well as effectively handling the complex landscapes of the CEC2020 and CEC2022 benchmarks. These results affirm the Hybrid FOX-TSA algorithm as a powerful and adaptable tool for tackling complex optimization problems, particularly in high-dimensional and multimodal landscapes. The integration of statistical analyses, such as t-tests and Wilcoxon signed-rank tests, further supports the statistical significance of its performance improvements.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"16 1","pages":"Article 103185"},"PeriodicalIF":6.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143173947","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}
Pub Date : 2025-01-01DOI: 10.1016/j.asej.2024.103198
Paul Wanjoli , Nabil H. Abbasy , Mohamed M. Zakaria Moustafa
Modern power systems are shifting toward decarbonization and incorporation of distributed energy resources (DERs) to replace fossil fuel generators. Although promising, DERs introduce uncertainty because of their intermittent nature. This study provides a comprehensive survey of current approaches for modeling system uncertainties and methods of analysis, particularly in the context of static voltage stability studies within modern power systems. Emphasis is placed on evaluating various models applied to different system random variables (RVs), focusing on their suitability for those particular RVs. Additionally, the study examines the characteristics and frameworks of prominent probabilistic methods (PM), evaluates their efficacy, and discusses static voltage stability analysis approaches, emphasizing solution structures and appropriate applications. It concludes by thoroughly reviewing both numerical and analytical PM methods and offering insights into their strengths and limitations. The provided comprehensive survey reveals that, considering system uncertainties, voltage stability studies have gained the most share, followed by small-signal stability studies, whereas the frequency stability studies have gained the least share.
{"title":"A state-of-the-art review on the modeling and probabilistic approaches to analysis of power systems integrated with distributed energy resources","authors":"Paul Wanjoli , Nabil H. Abbasy , Mohamed M. Zakaria Moustafa","doi":"10.1016/j.asej.2024.103198","DOIUrl":"10.1016/j.asej.2024.103198","url":null,"abstract":"<div><div>Modern power systems are shifting toward decarbonization and incorporation of distributed energy resources (DERs) to replace fossil fuel generators. Although promising, DERs introduce uncertainty because of their intermittent nature. This study provides a comprehensive survey of current approaches for modeling system uncertainties and methods of analysis, particularly in the context of static voltage stability studies within modern power systems. Emphasis is placed on evaluating various models applied to different system random variables (RVs), focusing on their suitability for those particular RVs. Additionally, the study examines the characteristics and frameworks of prominent probabilistic methods (PM), evaluates their efficacy, and discusses static voltage stability analysis approaches, emphasizing solution structures and appropriate applications. It concludes by thoroughly reviewing both numerical and analytical PM methods and offering insights into their strengths and limitations. The provided comprehensive survey reveals that, considering system uncertainties, voltage stability studies have gained the most share, followed by small-signal stability studies, whereas the frequency stability studies have gained the least share.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"16 1","pages":"Article 103198"},"PeriodicalIF":6.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143174415","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}
This research investigates the interplay of spatial arrangement and pedestrian behaviour in Toowoomba City Centre, a low-density city in Australia, using a combination of quantitative and qualitative analysis through Space Syntax. In contrast to high-density and medium-density areas where street connectivity typically drives movement patterns, this study emphasises the significant roles of both syntactical factors and land-use mapping in low-density contexts. The study identifies a correlation between pedestrian activity and land-use mapping and compatibility in low-density areas, advocating for strategic land-use planning within a 150–320-metre radius. It demonstrates that while traditional syntactic metrics are relevant, pedestrian movement in low-density areas is more significantly influenced by land-use diversity and compatibility during daytime hours (1–3 PM). Both syntactical factors and land-use are also crucial for attracting pedestrians during evening and night hours (6–8 PM). These findings highlight the importance of place-making strategies to foster vibrant, pedestrian-friendly environments.
{"title":"The influence of spatial configuration on pedestrian movement behaviour in commercial streets of low-density cities","authors":"Elham Mehrinejad Khotbehsara , Kathirgamalingam Somasundaraswaran , Tracy Kolbe-Alexander , Rongrong Yu","doi":"10.1016/j.asej.2024.103184","DOIUrl":"10.1016/j.asej.2024.103184","url":null,"abstract":"<div><div>This research investigates the interplay of spatial arrangement and pedestrian behaviour in Toowoomba City Centre, a low-density city in Australia, using a combination of quantitative and qualitative analysis through Space Syntax. In contrast to high-density and medium-density areas where street connectivity typically drives movement patterns, this study emphasises the significant roles of both syntactical factors and land-use mapping in low-density contexts. The study identifies a correlation between pedestrian activity and land-use mapping and compatibility in low-density areas, advocating for strategic land-use planning within a 150–320-metre radius. It demonstrates that while traditional syntactic metrics are relevant, pedestrian movement in low-density areas is more significantly influenced by land-use diversity and compatibility during daytime hours (1–3 PM). Both syntactical factors and land-use are also crucial for attracting pedestrians during evening and night hours (6–8 PM). These findings highlight the importance of place-making strategies to foster vibrant, pedestrian-friendly environments.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"16 1","pages":"Article 103184"},"PeriodicalIF":6.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143174844","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}
Pub Date : 2025-01-01DOI: 10.1016/j.asej.2024.103193
Aqsa Zafar Abbasi , Ayesha Rafiq , Badr M. Alshammari
The parametrization of the action of the modular group for the triangle groups is extended for to the finite generalised triangle groups where . Also, based on the resulting parametric equations, the authors have presented an audio encryption approach in this study. The extremely secure S-Box, which is then utilised to encrypt audio signals, is built using parametric equations. Utilising several audio sources, the effectiveness of the current approach is assessed. According to the simulation specially differential analysis average NSCR 99.96% and average UACI 33.33% as well as comparison results, the recommended method might prevent cryptographic vulnerabilities and produce reliable encryption results.
{"title":"A digital audio data protection method using parametric action of generalised triangle group on GF(28)","authors":"Aqsa Zafar Abbasi , Ayesha Rafiq , Badr M. Alshammari","doi":"10.1016/j.asej.2024.103193","DOIUrl":"10.1016/j.asej.2024.103193","url":null,"abstract":"<div><div>The parametrization of the action of the modular group <span><math><mi>P</mi><mi>S</mi><mi>L</mi><mo>(</mo><mn>2</mn><mo>,</mo><mi>Z</mi><mo>)</mo></math></span> for the triangle groups is extended for <span><math><mi>Δ</mi><mrow><mo>(</mo><mn>2</mn><mo>,</mo><mn>3</mn><mo>,</mo><mi>k</mi><mo>)</mo></mrow></math></span> to the finite generalised triangle groups <span><math><mo>〈</mo><mi>u</mi><mo>,</mo><mi>v</mi><mo>|</mo><msup><mrow><mi>u</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>=</mo><msup><mrow><mi>v</mi></mrow><mrow><mn>3</mn></mrow></msup><mo>=</mo><msup><mrow><mi>w</mi></mrow><mrow><mi>k</mi></mrow></msup><mo>=</mo><mn>1</mn><mo>〉</mo></math></span> where <span><math><mi>w</mi><mo>=</mo><mi>u</mi><mi>v</mi><mi>u</mi><mi>v</mi><mi>u</mi><msup><mrow><mi>v</mi></mrow><mrow><mn>2</mn></mrow></msup><mi>u</mi><mi>v</mi><mi>u</mi><msup><mrow><mi>v</mi></mrow><mrow><mn>2</mn></mrow></msup></math></span>. Also, based on the resulting parametric equations, the authors have presented an audio encryption approach in this study. The extremely secure S-Box, which is then utilised to encrypt audio signals, is built using parametric equations. Utilising several audio sources, the effectiveness of the current approach is assessed. According to the simulation specially differential analysis average NSCR 99.96% and average UACI 33.33% as well as comparison results, the recommended method might prevent cryptographic vulnerabilities and produce reliable encryption results.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"16 1","pages":"Article 103193"},"PeriodicalIF":6.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143175375","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}
Pub Date : 2025-01-01DOI: 10.1016/j.asej.2024.103205
Mahmoud E. Farfoura , Ibrahim Mashal , Ahmad Alkhatib , Radwan M. Batyha , Didi Rosiyadi
In recent years, the number of smart objects connected through the Internet of Things (IoT) has increased significantly. These smart objects are susceptible to cybersecurity threats and are easily affected by IoT malware. Malwares, if not detected, can harm different components of the IoT: smart objects, communication network, and the applications, leading to data theft and privacy breach. Despite that machine learning is incredibly successful at detecting malware, it cannot be deployed in IoT environment due to its computation complexity and high processing resources it demands. This paper proposes a lightweight machine learning framework for real-time IoT malware detection with limited computing burden. The framework is based on novel feature extraction technique; the Matrix Block Mean Downsampling (MBMD), and various machine learning algorithms are implemented. The experiments carried out on BODMAS dataset show the superiority of the proposed approach in detecting IoT malware with an F1-score of more than 99%.
{"title":"A novel lightweight Machine Learning framework for IoT malware classification based on matrix block mean Downsampling","authors":"Mahmoud E. Farfoura , Ibrahim Mashal , Ahmad Alkhatib , Radwan M. Batyha , Didi Rosiyadi","doi":"10.1016/j.asej.2024.103205","DOIUrl":"10.1016/j.asej.2024.103205","url":null,"abstract":"<div><div>In recent years, the number of smart objects connected through the Internet of Things (IoT) has increased significantly. These smart objects are susceptible to cybersecurity threats and are easily affected by IoT malware. Malwares, if not detected, can harm different components of the IoT: smart objects, communication network, and the applications, leading to data theft and privacy breach. Despite that machine learning is incredibly successful at detecting malware, it cannot be deployed in IoT environment due to its computation complexity and high processing resources it demands. This paper proposes a lightweight machine learning framework for real-time IoT malware detection with limited computing burden. The framework is based on novel feature extraction technique; the Matrix Block Mean Downsampling (MBMD), and various machine learning algorithms are implemented. The experiments carried out on BODMAS dataset show the superiority of the proposed approach in detecting IoT malware with an F1-score of more than 99%.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"16 1","pages":"Article 103205"},"PeriodicalIF":6.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143175675","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}
Pub Date : 2025-01-01DOI: 10.1016/j.asej.2024.103178
Adil Jhangeer , Beenish , Lubomír Říha
The study aims to analyze conservation laws and dynamics of the dual-mode Gardner equation for ideal fluid models. Lie symmetry analysis is applied to find symmetry generators, which in turn describe translation symmetries and abelian algebra. Lie theory converts the equation into a nonlinear ordinary differential equation using similarity variables. The model is transformed into a planar dynamical system via Galilean transformation, with phase portraits generated using bifurcation parameters. Runge–Kutta method is utilized to compute both super nonlinear and nonlinear wave solutions, with all solutions illustrated in the phase plane. Sensitivity and multistability analysis are conducted to examine chaotic behavior, quasiperiodic dynamics, and time series. Lyapunov characteristic exponents are discussed for chaos assessment. Numerical simulations reveal significant dynamical changes with alterations in frequencies and amplitude values. Explicit solutions are constructed via the power series method. Exploration of phase velocity and dispersion effects on the equation is done through modulation instability criteria. The multiplier scheme characterizes conserved vectors.
{"title":"Symmetry analysis, dynamical behavior, and conservation laws of the dual-mode nonlinear fluid model","authors":"Adil Jhangeer , Beenish , Lubomír Říha","doi":"10.1016/j.asej.2024.103178","DOIUrl":"10.1016/j.asej.2024.103178","url":null,"abstract":"<div><div>The study aims to analyze conservation laws and dynamics of the dual-mode Gardner equation for ideal fluid models. Lie symmetry analysis is applied to find symmetry generators, which in turn describe translation symmetries and abelian algebra. Lie theory converts the equation into a nonlinear ordinary differential equation using similarity variables. The model is transformed into a planar dynamical system via Galilean transformation, with phase portraits generated using bifurcation parameters. Runge–Kutta method is utilized to compute both super nonlinear and nonlinear wave solutions, with all solutions illustrated in the phase plane. Sensitivity and multistability analysis are conducted to examine chaotic behavior, quasiperiodic dynamics, and time series. Lyapunov characteristic exponents are discussed for chaos assessment. Numerical simulations reveal significant dynamical changes with alterations in frequencies and amplitude values. Explicit solutions are constructed via the power series method. Exploration of phase velocity and dispersion effects on the equation is done through modulation instability criteria. The multiplier scheme characterizes conserved vectors.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"16 1","pages":"Article 103178"},"PeriodicalIF":6.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143173949","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}
Pub Date : 2025-01-01DOI: 10.1016/j.asej.2024.103182
Khairul Habib Alam , Yumnam Rohen , Anita Tomar , Mohammad Sajid
In this work, we introduce novel postulates to establish fixed figure theorems with a focus on their extension to the domain of metric spaces. Consequently, we define conditions ensuring the existence and uniqueness of fixed circles, fixed ellipses, fixed Apollonius circles, fixed Cassini curves, fixed hyperbola, and so on for self mapping. We also partially address an open problem demonstrating that a contraction possesses a fixed elliptic disc. This property extends to smaller discs and ellipses within a complete metric space. By challenging the conventional assumption of zero self-distance, we pave the way for more accurate mathematical models applicable to real-world scenarios. Consequently, our research contributes not only to a deeper comprehension of mathematical concepts but also to practical utility across various scientific domains. Our findings are supported by illustrative examples. Additionally, we explore the concept of fixed figures in the context of Rectified Linear Unit (ReLU), a widely-used activation function in neural networks and machine learning models. Our exploration of fixed figures in the context of Rectified Linear Units (ReLU) further deepens our understanding of nonlinear systems and their relationship to neural network behavior.
{"title":"On geometry of fixed figures via φ−interpolative contractions and application of activation functions in neural networks and machine learning models","authors":"Khairul Habib Alam , Yumnam Rohen , Anita Tomar , Mohammad Sajid","doi":"10.1016/j.asej.2024.103182","DOIUrl":"10.1016/j.asej.2024.103182","url":null,"abstract":"<div><div>In this work, we introduce novel postulates to establish fixed figure theorems with a focus on their extension to the domain of <span><math><msubsup><mrow><mi>m</mi></mrow><mrow><mi>v</mi></mrow><mrow><mi>b</mi></mrow></msubsup><mo>−</mo></math></span>metric spaces. Consequently, we define conditions ensuring the existence and uniqueness of fixed circles, fixed ellipses, fixed Apollonius circles, fixed Cassini curves, fixed hyperbola, and so on for self mapping. We also partially address an open problem demonstrating that a <span><math><mi>J</mi><mi>S</mi><mo>−</mo></math></span>contraction possesses a fixed elliptic disc. This property extends to smaller discs and ellipses within a complete <span><math><msubsup><mrow><mi>m</mi></mrow><mrow><mi>v</mi></mrow><mrow><mi>b</mi></mrow></msubsup><mo>−</mo></math></span>metric space. By challenging the conventional assumption of zero self-distance, we pave the way for more accurate mathematical models applicable to real-world scenarios. Consequently, our research contributes not only to a deeper comprehension of mathematical concepts but also to practical utility across various scientific domains. Our findings are supported by illustrative examples. Additionally, we explore the concept of fixed figures in the context of Rectified Linear Unit (ReLU), a widely-used activation function in neural networks and machine learning models. Our exploration of fixed figures in the context of Rectified Linear Units (ReLU) further deepens our understanding of nonlinear systems and their relationship to neural network behavior.</div></div>","PeriodicalId":48648,"journal":{"name":"Ain Shams Engineering Journal","volume":"16 1","pages":"Article 103182"},"PeriodicalIF":6.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143173968","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}
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