{"title":"Functional Connectivity and Graph Embedding-Based Domain Adaptation for Autism Classification from Multi-site Data","authors":"Uday Singh, Shailendra Shukla, Manoj Madhava Gore","doi":"10.1007/s13369-024-09362-2","DOIUrl":"https://doi.org/10.1007/s13369-024-09362-2","url":null,"abstract":"<p>Many machine learning-based classification models for autism spectrum disorder (ASD) using neuroimaging data have been proposed. In recent developments, research has transitioned its focus to using extensive multi-site brain imaging datasets to increase the clinical applicability and statistical robustness of findings. However, the classification performance is hampered by the inherent heterogeneity of these combined datasets. This paper introduces a novel correlation-based functional connectivity method designed to extract improved Region of Interest (ROI) coupling features from the Autism Brain Imaging Data Exchange (ABIDE) dataset. We assess graph embedding domain adaptation (GEDA) to mitigate dataset heterogeneity, mapping data points from source and target domains into a common low-dimensional space while preserving their similarity relationships. We employ a novel dataset-splitting approach called the ’rectified environment’ to enhance classification accuracy. To validate our proposed model, we compared it with related works. Our result shows that the proposed model with support vector machine (SVM) has an accuracy of 78.1% and AUROC 83.9% in identifying ASD patients. Our model demonstrates a substantial improvement, increasing accuracy by 6.1% and AUROC by 5.3% compared to the maximum independence domain adaptation (MIDA) model. These findings reveal an anticorrelation in brain function and disruptions in brain connectivity between anterior and posterior brain regions in ASD.</p>","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"303 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141932895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Novel Method Based on Stepwise Variational Modal Decomposition and Gramian Angular Difference Field for Bearing Health Monitoring","authors":"Yong Li, Hongyao Zhang, Sencai Ma, Gang Cheng, Qiangling Yao, Chuanwei Zuo","doi":"10.1007/s13369-024-09320-y","DOIUrl":"https://doi.org/10.1007/s13369-024-09320-y","url":null,"abstract":"<p>The health status of bearings seriously affects the operational efficiency of equipment, and it is important to carry out bearing health status detection. A bearing fault diagnosis method based on stepwise variational modal decomposition (SVMD) with adaptive initialization center frequency and Gramian angular difference field is proposed. Firstly, a method of center frequency initialization base on frequency energy distribution characteristics is proposed to improve the decomposition speed and stability. Secondly, SVMD with single component decomposition and local decomposition is proposed to improve decomposition efficiency. It can effectively avoid inconsistency in different signal parameter settings and ensures consistency in the number of signal components, which is very suitable for batch processing of signals. Finally, Gramian angular field (GAF) and convolutional neural networks (CNNs) are combined to extract features of the reconstructed signal spectrum and enhance the differential characteristics between different signal spectrum. The experiment shows that the center frequency initialization method can shorten the single decomposition time from 11.13 to 6.71 s. The overall recognition rate can reach 95.2%, which is at least 1.9% higher than other decomposition methods.</p>","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"369 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141932898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Multi-objective Optimization of Process Parameters for Surface Quality and Geometric Tolerances of AlSi10Mg Samples Produced by Additive Manufacturing Method Using Taguchi-Based Gray Relational Analysis","authors":"Uğur Işik, Halil Demir, Barış Özlü","doi":"10.1007/s13369-024-09333-7","DOIUrl":"https://doi.org/10.1007/s13369-024-09333-7","url":null,"abstract":"<p>In this study, it has been focused on examining the effects of production parameters on quality parameters such as surface roughness and geometric tolerances in the production of AlSi10Mg samples by the additive manufacturing method. The experimental design has been prepared according to the Taguchi L<sub>27</sub> orthogonal array. As a result, in the production of samples, increasing laser power (<i>P</i>) contributed positively to surface roughness and diameter change, and increasing scanning distance (SD) negatively contributed to circularity change and concentricity. Further, it has been determined that increasing the scanning speed (SS) negatively affects the concentricity change of the produced samples. The optimum production parameters for surface roughness and diameter variation has been determined as A<sub>1</sub>B<sub>1</sub>C<sub>3</sub>. The optimum production parameters for circularity variation and concentricity have been determined as A<sub>3</sub>B<sub>3</sub>C<sub>1</sub> and A<sub>3</sub>B<sub>1</sub>C<sub>1</sub>, respectively. According to the ANOVA analysis results, the most effective parameters for surface roughness, diameter change, circularity change and concentricity have been 53.22% <i>P</i>, 62.45% SD, 37.23% SS and 40.41% SD, respectively. Furthermore, as a result of the gray relationship analysis (GRA) performed for the output parameters, the optimum production parameter has been determined as A<sub>2</sub>B<sub>1</sub>C<sub>3</sub>.</p>","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"77 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141932892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Maneesh Kumar, Praveen K. Surolia, Saurav Mishra, Kanchan Guru, Govind Sethia, Hardik B. Bhatt, Anand G. Chakinala, Gayatri Prasad
{"title":"Sustainable Sunlight and UV-Driven Photocatalytic Degradation of Methylene Blue by Employing Cellulose/GO/TiO2–Bi Composite Material","authors":"Maneesh Kumar, Praveen K. Surolia, Saurav Mishra, Kanchan Guru, Govind Sethia, Hardik B. Bhatt, Anand G. Chakinala, Gayatri Prasad","doi":"10.1007/s13369-024-09297-8","DOIUrl":"https://doi.org/10.1007/s13369-024-09297-8","url":null,"abstract":"<p>In this work, cellulose was isolated from the waste leaves of the <i>Butia monosperma</i> plant was tailored into cellulose/GO/TiO<sub>2</sub>–Bi material via green and one-step method for photocatalytic degradation of methylene blue (MB) under the natural sunlight and UV light. The encroachment of TiO<sub>2</sub>–Bi within the cellulose matrix with someway decrement of agglomeration was examined by SEM analysis. The XRD and FTIR analysis suggested the interaction of cellulose, graphene oxide (GO), and TiO<sub>2</sub>–Bi, resulting in the formation of secondary bonding such as hydrogen bonds, and van der Waal bonds. The results suggested that the cellulose backbone has compatibility to anchor the GO and TiO<sub>2</sub>–Bi onto the surface; hence, they perform with synergetic approaches for degradation of MB. DRS and PL analysis infers to the synergetic interaction among GO and TiO<sub>2</sub>–Bi and the role of graphene oxide in photocatalytic performance of fabricated cellulose-based semiconductor. The photocatalytic activity of cellulose/GO/TiO<sub>2</sub>–Bi composite is discussed in form of charge transfer and electron/hole recombination stoppage by the synergetic effect of GO and TiO<sub>2</sub>–Bi anchored within cellulose backbone. The cellulose/GO/TiO<sub>2</sub>–Bi composite displayed noteworthy photocatalytic performance for the degradation of MB under solar light and UV light. This work will underpin the extension of research areas where the biotemplate-based promising materials are synthesized for photocatalytic applications.</p>","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"38 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141932891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Influencing Laws of Obliquities/Incident Angles on Ricochet and Trans-ricochet of Projectile-Target Impact for Armor Steel Plate Structural Design","authors":"Farah Siddique, Fuguo Li, Mirza Zahid Hussain, Qian Zhao, Jingchuan Yin, Jianwen Fan, Qinghua Li","doi":"10.1007/s13369-024-09397-5","DOIUrl":"https://doi.org/10.1007/s13369-024-09397-5","url":null,"abstract":"<p>The effectiveness of protective armor supports the projectile ricochet phenomenon as it clearly restrains projectile from penetration and can potentially form basis for design optimization of protective systems. The present numerical study has been carried out to find the most appropriate obliquity/incident angle which can effectively be used for design of protective armor. Although it is not possible to practically control the incident projectile angles, but numerical investigation can potentially provide solution for design and performance optimization of overall structure and surface geometry of target plate, or adaptive adjustment in terms of target obliquity angle. The projectile has been impacted with velocity of 700 ± 20 m/s at incident angles ranging from <span>(15^circ le theta le 75^circ)</span>. The experimental results at 0° has been taken as a reference to validate material model and simulation results. The verification parameters such as eroded mass and steady residual velocity have also been investigated. After all validations and calculations, the window of obliquities/incident angle, safe thickness limit as well as steady residual velocity was obtained. Based on the attained optimum angle 45°, the minimum target plate thickness calculated is 6.4 mm against the thickness of reference plate, 4 mm (UHSLA-XF1700) armor steel. The result was partial penetration at 0° incident angle. The numerical simulation for 6.4-mm-thick target plate under similar circumstances revealed that it has ability to defeat the incoming threat more effectively. For the respective cases of different incident angles, a modified analytical model has also been developed and results coincided with the findings of numerical simulations.</p>","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"27 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141932739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sampath Suranjan Salins, Shiva Kumar, Sawan Shetty, H. K. Sachidananda, Mohammad Shayan Asjad Khan
{"title":"Characterization of the Aluminium-Based Metal Foam Properties for Automotive Applications","authors":"Sampath Suranjan Salins, Shiva Kumar, Sawan Shetty, H. K. Sachidananda, Mohammad Shayan Asjad Khan","doi":"10.1007/s13369-024-09399-3","DOIUrl":"https://doi.org/10.1007/s13369-024-09399-3","url":null,"abstract":"<p>Metal foams are solids where the gas is filled inside uniformly in the metal matrix. Blowing agent supplies air inside the parent metal, and metal foam has emerged to be a promising material because of its low density, high absorption capacity, low thermal conductivity and high strength which finds its huge applications in automobile components. The present work deals with the application of the aluminium metal foam with different densities 200 and 400 kg/m<sup>3</sup> in automobiles. Various tests such as toughness, hardness, bending and compression are carried out for four chosen densities, and the values are compared with the aluminium base metal. The result showed that the hardness value increased significantly by 24.48% with the rise in the density from 200 to 400 kg/m<sup>3</sup>. Maximum modulus of resilience for the low-density specimen is found to be 2.21 MJ/m<sup>3</sup>. Surface topography showed irregular pore shapes with discontinuity, resulting in a loss of cell integrity with the neighbouring cell walls. This affected the performance of the foam significantly. Thermal experiments were carried out to determine the thermal conductivity where thermal conductivity increased by 122% with the rise in the density from 200 to 400 kg/m<sup>3</sup>. Based on the results, it is concluded that aluminium foam with density 400 kg/m<sup>3</sup> can be recommended for use in automobile applications due to its lightweight properties, which contribute to improving fuel efficiency, impact absorption capacity and the vehicle’s speed. Additionally, the air trapped within the foam cells serves as a sound barrier and insulator in cars.</p>","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"38 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141932899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"3D Finite Element Analysis of Stone Column Behaviour in Layered Soil with Geosynthetic Reinforced Soil Beds","authors":"Soumen Naskar, Subhash Kumar Gupta, Awdhesh Kumar Choudhary, Keshav Kumar Sharma","doi":"10.1007/s13369-024-09322-w","DOIUrl":"https://doi.org/10.1007/s13369-024-09322-w","url":null,"abstract":"<p>In the present study, a series of three-dimensional numerical analysis has been performed to understand the behaviour of stone column in layered soil and the purpose of using geocell–geogrid as reinforcement in improving the overall performance of the composite system. Results indicate that the performance improvement visibly enhances with an increase in the depth of top layer (H/D) of clay beds. However, the performance improvement is found to be insignificant beyond the depth of top layer equal to 4D. With the provision of geocell–geogrid reinforcement over the top of stone column, the percentage increase in the bearing capacity of encased stone column in layered soil was found to be nearly 166%. Also, the overall increase in load carrying capacity of reinforced composite system was found to be more than 8 times than that of layered clay beds without stone column. Hence, it clearly indicates that the performance of layered clay beds can be improved very effectively with the provision of geocell–geogrid reinforced sand beds over the stone column placed in layered soil system. Further, the load carrying capacity of stone column is greatly influenced by the friction angle of stone aggregates, stiffness of geosynthetics material and the pocket size of geocell.</p>","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"57 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141932740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Analysis of Reduced Quantized Feedback-Based User-Antenna Scheduling Scheme for Multi-user Massive MIMO FDD Systems","authors":"Dukhishyam Sabat, Prabina Pattanayak, Akhilesh Kumar, Jyoti Mohanty, Ganesh Prasad","doi":"10.1007/s13369-024-09380-0","DOIUrl":"https://doi.org/10.1007/s13369-024-09380-0","url":null,"abstract":"<p>This article proposes an opportunistic quantized feedback-based user and antenna scheduling (OQFUAS) scheme for multi-user massive multiple-input and multiple-output frequency division duplexing (MU-mMIMO FDD) systems to circumvent feedback bottleneck. As in order to improve system throughput, channel state information (CSI) is mandatory at base stations (BSs). However, with increase in number of antennas as well as users, uplink feedback overhead increases drastically. Hence, user-antenna joint scheduling with limited feedback is essential for MU-mMIMO FDD systems. In this article, we propose the OQFUAS scheme that jointly considers antenna selection and user scheduling (US) utilizing the limited feedback information from users, i.e., antenna indexing and multi-bit signal-to-interference-plus-noise ratio (SINR) quantized information. Particularly in this scheme, the opportunistic users selectively feedback the antenna indexing information, four-bit quantized CSI utilizing the optimal quantization levels and selection thresholds. Furthermore, the closed-form solutions to find the optimal quantization levels and selection thresholds are not tractable (also not discussed in literature) for such networks which depends on a variety of system parameters. This article also presents the mathematical analysis of multi-bit quantization strategy. Moreover, the analytical expressions for achievable system throughput are derived for both heterogeneous and homogeneous MU-mMIMO FDD systems. Interestingly, the analytical results mimic and in accord with simulation results with insignificant gap.\u0000</p>","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"9 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141932741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Multi-dimensional Information Multimedia Big Data Mining Analysis Relying on Association Rule Mapping Model","authors":"Pengfei He","doi":"10.1007/s13369-024-09257-2","DOIUrl":"https://doi.org/10.1007/s13369-024-09257-2","url":null,"abstract":"<p>Multi-factor information multimedia big data mining analysis is a thorough method for generating valuable insights from large, diversified datasets containing multimedia material. Exploration and interpretation of multi-dimensional data, including text, photos, videos, and audio, are part of this sophisticated analytical process. Conventional multi-dimensional information multimedia big data mining analysis suffers from increased processing complexity and has trouble managing high-dimensional data. With parallel processing and a novel pruning strategy, our proposed modified Apriori algorithm effectively addresses these issues, greatly decreasing computational overhead and enhancing scalability for high-dimensional datasets. The data was collected using modern light and electron microscopy techniques. To enhance both the signal's quality and the network's general efficiency, a Wiener filter was used to pre-process the acquired data for noise reduction. Principal component analysis was used to extract pre-processed data (PCA). Multimedia big data mining uses PCA to minimize high-dimensional data while maintaining important information and reducing redundancy. This allows for more effective analysis and feature extraction for improved insights and resource optimization. The proposed approach was tested in a simulated environment, yielding the following performance metrics: accuracy performance (89%), precision (86%) at the level for mining speed (5.37%), mining time (51.4%), acceleration ratio (16.7%), and recall ratio (40.5%). A comparison analysis demonstrates how well the suggested method resolves complexity of networks and data accessibility concerns.</p>","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"182 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141882560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alireza Fayazi Khanigi, Sina Kooshamanesh, Amirreza Farnia, Hamidreza Najafi
{"title":"Effect of Pulse Duration on Surface Characters and Wear Behavior of Laser-Hardened AISI O1 Tool Steel","authors":"Alireza Fayazi Khanigi, Sina Kooshamanesh, Amirreza Farnia, Hamidreza Najafi","doi":"10.1007/s13369-024-09378-8","DOIUrl":"https://doi.org/10.1007/s13369-024-09378-8","url":null,"abstract":"<p>AISI O1 steel, valued for its exceptional wear resistance as tool steel, undergoes laser surface hardening using a pulsed Nd:YAG laser in this investigation. The study investigates the influence of pulse duration on the wear mechanism. Scanning electron microscopy is utilized for microstructure examination, coupled with a microhardness test. The retained austenite in laser-hardened samples is quantified through X-ray diffraction analysis. The efficiency of laser surface hardening on the wear mechanism was assessed by comparing the results with a conventional bulk hardened sample. Wear tests and microstructure analysis revealed that pulse duration significantly influences the depth and diameter of the laser-hardened area, as well as the wear mechanism. Moreover, longer pulse durations resulted in enhanced wear mechanism performance.</p>","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"186 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141882561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}