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1st engineering and Science International Conference 2024, ESIC 2024

作者： Asy'ari, M.K. Dudayef, A.H. Musyafa, A. Mahardika, A.K. Department of Engineering Physics Faculty of Industrial Technology and System Engineering Institut Teknologi Sepuluh Nopember Indonesia

Electric power plays a very important role in people's lives and in the development of various sectors of the economy. Modern economies are very dependent on electrical energy as the main driving force for activities. This has led to an increase in the number and capacity of power plants. Solar power is a new renewable energy generator that is developed to increase the capacity of electricity generation in Indonesia. The instability of solar irradiance means that the resulting solar power generation must be stored in batteries before being transferred to the load. There is an inverter in the battery discharging system which functions to change the amount of DC to AC. Changes in battery capacity due to the use of loads result in an unstable inverter output voltage, so a control system is required. The battery discharging system also needs to be controlled to maintain battery performance. This study aims to design and implement fuzzy logic control (FLC) for controlling the inverter output voltage and a cyber physics system (CPS) based battery discharging system. Input FLC is in the form of error and delta error and the output is in the form of pulse width modulation (PWM). The control of battery discharging uses two batteries which can work automatically and manually via the CPS connected command. The response of the inverter output voltage control system has a rise time of 0.38 minutes, a maximum overshoot of 4.54 percent, and a steady-state error value of 0.1817 percent. Battery discharging control can work properly according to the built control mechanism. The uncertainty of UA1 for the inverter output voltage is 0.434, the output current is 0.002, and the output power is 0.408 Watt. © 2025 Institute of physics Publishing. All rights reserved.

关键词： Solar power generation

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Bio- colouration of nylon fabric using natural dyes and mordants

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Materials Research Innovations 2025年第2期29卷 108-116页

作者： Chowdhury, Tanvir Ahmed Khandaker, Jahirul Islam Gafur, Mohammad Abdul Repon, Md. Reazuddin Hossain, Alamgir Islam, Md. Kamrul Shanto, Nadim Khan Department of Physics Jahangirnagar University Savar Dhaka Bangladesh Department of Textile Engineering Daffodil International University Dhaka Bangladesh Pilot Plant & Process Development Centre Bangladesh Council of Scientific and Industrial Research Dhaka Bangladesh Department of Production Engineering Faculty of Mechanical Engineering and Design Kaunas University of Technology Kaunas Lithuania

Natural dyes offer a harmless alternative to synthetic counterparts, minimizing the release of toxic chemicals associated with synthetic dyes. In this investigation, nylon fabrics underwent dyeing with neem leaf extract under acidic, neutral and alkaline conditions along with lemon juice mordant. The study revealed that colour strength exhibited an increase with decreasing pH levels, with the mordanted fabric dyed in an acidic medium demonstrating the highest value. Analysis of colour coordinates indicated that the mordanted fabric dyed in an acidic medium exhibited superior colour pickup compared to the other samples. Enhanced fastness properties were achieved under acidic pH conditions when a mordant was used. The FTIR test result ensured the nylon-lemon juice-neem leaves extracted dye interaction. The EDX analysis also confirmed the elemental composition of neem leaves extracted dye in nylon assisted by lemon juice. The SEM test results validated the dyeing process empirically. © 2024 Informa UK Limited, trading as Taylor & Francis Group.

关键词： Alkalinity

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Biomordant assisted natural dyeing of cellulosic fibre: a greener approach

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Materials Research Innovations 2025年第1期29卷 27-34页

作者： Chowdhury, Tanvir Ahmed Khandaker, Jahirul Islam Gafur, Mohammad Abdul Repon, Md. Reazuddin Islam, Md. Kamrul Hossain, Alamgir Mollick, Swaraz Department of Physics Jahangirnagar University Dhaka Bangladesh Department of Textile Engineering Daffodil International University Dhaka Bangladesh Pilot Plant & Process Development Centre Bangladesh Council of Scientific and Industrial Research Dhaka Bangladesh Department of Bioproducts and Biosystems School of Chemical Engineering Aalto University Espoo Finland Department of Production Engineering Faculty of Mechanical Engineering and Design Kaunas University of Technology Kaunas Lithuania Department of Textile Engineering Jashore University of Science and Technology Jashore Bangladesh

Natural dyes serve as a benign alternative to their synthetic counterparts, offering a sustainable option that directly mitigates the release of toxic chemicals. In this study, cotton fabrics were dyed with neem leaf extract in acidic, neutral and alkaline condition where samples were mordanted with lemon juice. The findings revealed a direct correlation between colour strength (K/S) and pH levels, and optimal fastness properties were achieved under alkaline pH conditions when a mordant was employed. The Energy Dispersive X-ray (EDX) ensured the elemental composition of lemon juice assisted dyed fabric which indicates the effective binding of cotton fabric with neem leaves extracted dye. The Fourier Transform Infrared (FTIR) Spectroscopy analysis also confirmed the interaction of cotton fabric with dye particles. The results indicate that cotton fabric can be successfully dyed with neem leaf extract and lemon juice as the biomordant, presenting an eco-friendly and sustainable approach to dyeing practices. © 2024 Informa UK Limited, trading as Taylor & Francis Group.

关键词： Cotton fabrics

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Designing Sustainable Closed-Loop Supply Chain Network Based on a Circular Economy Approach: Under Uncertainty During the Post-COVID Era

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Circular Economy and Sustainability 2025年 1-43页

作者： Abbasi, Sina Rokhva, Shayan Farahmand, Kazem Ghasemi, Peiman Shahab, Erfan Department of Industrial Engineering Lahijan Branch Islamic Azad University Lahijan Iran Department of Information Technology Faculty of Industrial and System Engineering Tarbiat Modares University Tehran Iran Department of Economics Faculty of Economics and Administrative Sciences Ferdowsi University of Mashhad Mashhad Iran Department of Business Decisions and Analytics University of Vienna Kolingasse 14-16 Vienna 1090 Austria Department of Industrial Engineering Toronto Metropolitan University Toronto Canada

Sustainable closed-loop supply chain networks (SCLSCNs) are a key component of the circular economy and aim to reduce waste and increase resource efficiency. The multi-product SCLSCN under uncertainty during the post-COVID pandemic is presented in this study. After establishing a mathematical model for the design of a closed-loop network (CLN), a series of potential scenarios are used to account for parameter uncertainty. In this paper, a hybrid metaheuristic method is proposed to tackle this NP-hard problem for solving the multi-objective (MO) optimization. We refer to the hybrid algorithm as HWS (a hybrid method of WOA and SA). It is an optimizer that uses the relatively new whale optimization algorithm (WOA) and the widely used simulated annealing (SA) technique. Hybrid metaheuristics are one of the most interesting current trends in MO optimization. The aim of utilizing SA is to increase the yield by searching the most promising regions found by the WOA algorithm. Analytical and numerical data are given to illustrate the reliability and suitability of the proposed model using real case studies in the electronics industry. Finally, a sensitivity analysis is conducted to assess how consumer demand affects different aspects of sustainability. The results emphasize that the achievement of economic, environmental, and social goals is significantly affected by COVID-19. The scope of the economic aspect thus tends to increase with increasing changes in customer demand in the post-COVID-19. The bad social effects increased due to the number of days lost due to illness. These effects continue in the post-disaster period. On the other hand, carbon dioxide (CO₂) emissions have decreased due to lockdowns during the disaster, leading to greater health and it continues after COVID-19. © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2025.

关键词： Circular closed-loop supply chain Multi-objective optimization Simulated annealing Uncertain programming Whale optimization algorithm

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PVC reinforced with Pb1/2Ni1/2Fe2O4 spinel ferrites nanoparticles: development of linear/nonlinear optical, dielectric characteristics and γ-rays buildup-factors of for optical and radiation safety applications

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Optical and Quantum Electronics 2025年第1期57卷 1-21页

作者： Alfryyan, Nada Alsaif, Norah A. M. Khattari, Z.Y. Al-Ghamdi, Hanan Elsad, R.A. Shams, M.S. El-Refaey, Adel M. Abouhaswa, A.S. Elamy, Mamdouh I. Rammah, Y.S. Department of Physics College of Science Princess Nourah Bint Abdulrahman University P.O. Box 84428 Riyadh11671 Saudi Arabia Department of Physics Faculty of Science The Hashemite University P. O. Box 330127 Zarqa13133 Jordan Basic Engineering Science Department Faculty of Engineering Menoufia University Shebin El-Koom32511 Egypt Department of Basic and Applied Science Collage of Engineering and Technology Arab Academy of Science Technology and Maritime Transport Smart Village Giza Egypt Physics and Mathematical Engineering Department Faculty of Electronic Engineering Menoufia University 32952 Menouf Egypt Department of Physics Faculty of Science Menoufia University Shebin El-Koom32511 Egypt Institute of Natural Science and Mathematics Ural Federal University Ekaterinburg620002 Russia Industrial Engineering Department College of Engineering Northern Border University Arar Saudi Arabia Department of Production Engineering and Mechanical Design Faculty of Engineering Menoufia University Shebin El‑Kom Egypt Pharos University in Alexandria Canal El Mahmoudia Street Beside Green Plaza Complex Alexandria21648 Egypt

Physical, linear/nonlinear optical, dielectric characteristics, and γ-ray-buildup factors of nanocomposites (NCs) sheets of PVC doped with x(Pb0.5Ni0.5Fe2O4) spinel nanoferrites: x = 0–10 wt% and named as PVC/PNF0-PVC/PNF10 have been tested. Density (ρ) changed from 1.405 g·cm−3 to 2.6130 g·cm−3 as x changed from 0.0 to 10 wt%. Optical-energy-gap (Eoptical) diminished from 5.207 to 2.753 eV, whereas the linear index of refraction of (nlinear) increased from 1.962 to 2.405 for PVC/PNF0 and PVC/PNF10 NCs sheets. The nonlinear optical susceptibility (χ3) and nonlinear refractive index (n2optical) of the investigated PVC/PNF-NCs sheets increased as (Pb0.5Ni0.5Fe2O4) content increased. Dielectric spectroscopy of fabricated PVC/PNF-NCs is investigated throughout frequencies from 50 Hz to 5 × 106 Hz at RT. The dielectric-constant was reduced by introduction of Pb0.5Ni0.5Fe2O4. Mass absorption coefficient (MAC) values of PVC/PNF-NCs sheets obeyed the fact that (PVC/PNF0)MAC MAC MAC MAC MAC. The γ-ray exposure, and absorption-buildup factors of the investigated PVC/PNF-NCs sheets followed as (PVC/PNF0)EBF/EABF > (PVC/PNF1)EBF/EABF > (PVC/PNF3)EBF/EABF > (PVC/PNF5)EBF/EABF > (PVC/PNF10)EBF/EABF. Results confirmed that the suggested PVC/PNF-NCs sheets with smallest dielectric constant may implement in electrical cable. Also, PVC/PNF-NCs sheets may implement optical, electrical devices and γ-ray attenuation field. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024.

关键词： Gamma ray production

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Innovative metallization pattern and technique for industrial rear emitter p-type tunnel oxide passivated contact solar cells

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Journal of industrial and engineering Chemistry 2025年 147卷 628-635页

作者： Khokhar, Muhammad Quddamah Yousuf, Hasnain Rahman, Rafi Ur Aida, Maha Nur Madara, Polgampola Chamani Jony, Jaljalalul Abedin Dao, Vinh-Ai Pham, Duy Phong Yi, Junsin Department of Electrical and Computer Engineering Sungkyunkwan University Suwon16419 Korea Republic of Interdisciplinary Program in Photovoltaic System Engineering Sungkyunkwan University Suwon16419 Korea Republic of Department of Future Energy Engineering Sungkyunkwan University Suwon16419 Korea Republic of Department of Physics Faculty of Applied Sciences HCMC University of Technology and Education Ho Chi Minh City700000 Viet Nam College of Information and Communication Engineering Sungkyunkwan University Suwon16419 Korea Republic of

In this study, we aim to enhance the efficiency of p-type tunnel oxide passivated contact (p-TOPCon) solar cells by improving charge carrier extraction while achieving higher fill factor (FF) and open circuit voltage (Voc). We explore various potential methods for the photovoltaic industrial procedure, including optimizing metallization patterns and techniques, such as the utilization of a high efficiency grid pattern (HEGP) in place of the conventional straight finger-line pattern (SFLP). Co-firing conditions, peak firing temperature, and belt speed are investigated for their impact on FF enhancement, along with evaluating the effects of single and double print processes. Furthermore, we examine the efficacy of Nafion treatment as a surface modification technique to enhance FF. Experimental results indicate that optimizing co-firing conditions and employing Nafion treatment significantly increased FF to approximately 83.26% in p-TOPCon solar cells. Adjusting peak firing temperature and belt speed, as well as implementing the double print process, demonstrate superior FF enhancement compared to the single print process. Additionally, Nafion treatment contributes to FF improvement by passivating surface defects and enhancing charge carrier collection. Overall, this study provides valuable insights into optimizing co-firing conditions and surface treatment techniques to enhance p-TOPCon solar cell efficiency (Eff) up to 23.50%, thus advancing high-efficiency photovoltaic technology. © 2024 The Korean Society of industrial and engineering Chemistry

关键词： Metallizing

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Bibliometric and Content Analysis of Large Language Models Research in Software engineering: The Potential and Limitation in Software engineering

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International Journal of Advanced Computer Science and Applications 2025年第4期16卷 344-356页

作者： Damayanti, Annisa Dwi Gani, Hamdan Zhipeng, Feng Gani, Helmy Zuhriyah, Sitti Nurani Djabir, St. Nurhayati Wardani, Nur Ilmiyanti Department of Environmental Engineering Faculty of Engineering Hasanuddin University Makassar Indonesia Department of Machinery Automation System ATI Makassar Polytechnic Makassar Indonesia School of Culture Creativity and Media Hangzhou Normal University Zhejiang Hangzhou China Department of Industrial Hygiene Faculty of Public Health Occupational Health and Safety Makassar College of Health Sciences Indonesia Department of Computer System Universitas Handayani Makassar Makassar Indonesia Department of Information Systems and Technology Institut Teknologi dan Bisnis Nobel Indonesia Jl. Sultan Alauddin No.212 Makassar90221 Indonesia Department of Informatics Engineering Universitas Handayani Makassar Makassar Indonesia

Large Language Models (LLM) is a type of artificial neural network that excels at language-related tasks. The advantages and disadvantages of using LLM in software engineering are still being debated, but it is a tool that can be utilized in software engineering. This study aimed to analyze LLM studies in software engineering using bibliometric and content analysis. The study data were retrieved from Web of Science and Scopus. The data were analyzed using two popular bibliometric approaches: bibliometric and content analysis. VOS Viewer and Bibliometrix software were used to conduct the bibliometric analysis. The bibliometric analysis was performed using science mapping and performance analysis approaches. Various bibliometric data, including the most frequently referenced publications, journals, and nations, were evaluated and presented. Then, the synthetic knowledge method was utilized for content analysis. This study examined 235 papers, with 836 authors contributing. The publications were published in 123 different journals. The average number of citations per publication is 1.44. Most publications were published in Proceedings International Conference on Software engineering and ACM International Conference Proceeding Series, with China and the United States emerging as the leading countries. It was discovered that international collaboration on the issue was inadequate. The most often used keywords in the publications were "software design," "code (symbols)," and "code generation." Following the content analysis, three themes emerged: 1) Integration of LLM into software engineering education, 2) application of LLM in software engineering, and 3) potential and limitation of LLM in software engineering. The results of this study are expected to provide researchers and academics with insights into the current state of LLM in software engineering research, allowing them to develop future conclusions. © (2025), (Science and Information Organization). All Rights Res

关键词： Software design

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Insights into the role of metal dopant on ammonia decomposition over graphene-supported Ni6, Ni5Pt, and Ni5Rh clusters

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International Journal of Hydrogen Energy 2025年 130卷 168-175页

作者： Yusuf, Alfani Budiantono, Reva Juangsa, Firman Bagja Aziz, Muhammad Budiyanto, Muhammad Arif Saputro, Adhitya Gandaryus Mahyuddin, Muhammad Haris Graduate Program of Engineering Physics Faculty of Industrial Technology Institut Teknologi Bandung Jl. Ganesha 10 Bandung40132 Indonesia PLN Nusantara Power UMRO Jl. Pluit Karang Ayu Barat No. 1 Jakarta14450 Indonesia Thermal Science and Engineering Research Group Faculty of Mechanical and Aerospace Engineering Institut Teknologi Bandung Jl Ganesha 10 Bandung40132 Indonesia Institute of Industrial Science The University of Tokyo 4-6-1 Komaba Meguro-ku Tokyo153-8505 Japan Department of Mechanical Engineering Universitas Indonesia Depok16424 Indonesia Quantum and Nano Technology Research Group Faculty of Industrial Technology Institut Teknologi Bandung Jl. Ganesha 10 Bandung40132 Indonesia Research Center for Nanoscience and Nanotechnology Institut Teknologi Bandung Jl. Ganesha 10 Bandung40132 Indonesia

Ammonia (NH3) is a promising hydrogen (H2) carrier, owing to its high hydrogen content and ease of storage. However, efficient catalytic decomposition of NH3 to H2 remains challenging. This study investigates the catalytic activity of graphene-supported Ni6, Ni5Pt, and Ni5Rh clusters for NH3 decomposition to N2 and H2 using density functional theory (DFT) calculations. The results show that the addition of Pt and Rh dopants weakens the adsorption of intermediates formed during the NH3 dehydrogenation step and slightly increases the activation energies. Interestingly, however, this drawback becomes a key factor in enhancing the activity of the subsequent N–N association and H–H recombination steps, which are critical for the reaction to cycle. Our electronic structure analysis reveals that the decreased activity in the NH3 dehydrogenation step but increased activity in the N2 and H2 formation steps are due to the ligand effect exerted by Pt and Rh. Specifically, since the metal dopants have higher electronegativities than Ni, the number of electrons at the preferred Ni-edge site decreases and eventually weakens the adsorption. Furthermore, the spatially broad nature of the Pt-5d and Rh-4d orbitals delocalizes the cluster's electron distribution, which weakens the 2N and 2H adsorption and thus eases the N2 and H2 formation. This study provides insights into the role of noble metal dopants in optimizing Ni-based catalysts for NH3 decomposition, paving the way for efficient H2 utility technologies. © 2025 Hydrogen Energy Publications LLC

关键词： Dehydrogenation

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Experimental implementation of chaos-based video encryption using visible light communication technology

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Applied Optics 2025年第9期64卷 C101-C118页

作者： Fotso, Sorel Bagio Nono Mbé, Jimmi Hervé Talla Takotue, Jean Ernest Takougang, Armand Cyrille Nzeukou Ndjiongue, Alain Richard Research Unit of Condensed Matter Electronics and Signal Processing Department of Physics University of Dschang P.O. Box 67 Dschang Cameroon Research Unit of Automation and Applied Computer Department of Electrical Engineering IUT-FV Bandjoun University of Dschang P.O. Box: 134 Bandjoun Cameroon Laboratory of Industrial Systems and Environmental Engineering Fotso Victor University Institute of Technology University of Dschang P.O. Box 134 Bandjoun Cameroon School of Electrical and Information Engineering Faculty of Engineering and the Built Environment University of the Witwatersrand Johannesburg South Africa

Simulations are commonly used to develop and evaluate video encryption algorithms. Although these approaches are useful for demonstrating theoretical feasibility and algorithm performance, they neglect practical challenges and real-world communication conditions. This oversight creates a critical gap in evaluating their effectiveness and security in practical applications. In this paper, we describe a novel, to the best of our knowledge, video encryption scheme that employs a modified chaotic Colpitts oscillator, a customized Josephus problem, and ribonucleic acid (RNA) operations, and is implemented in visible light communication (VLC) environment. The modified Colpitts oscillator reveals significant phenomena, the most prominent for this study being chaos. The encryption scheme involves block scrambling and pixel-level permutation employing a customized Josephus problem and a column and row shifting technique. Diffusion is then achieved through a custom Josephus problem-oriented RNA operation combined with basic RNA operations and cipher block chaining (CBC). Based on the results, we found that the customized Josephus problem-based permutation performed more efficiently than traditional methods, whereas the column and row shifting permutation was more robust. By eliminating key sequence coding and item-to-item operations, the proposed RNA operation reduces computational overhead. This video encryption scheme is proven to be effective and resilient at securing video data transmitted over the VLC channel, and it constitutes a significant advancement in areas such as surveillance, medical imaging, and military communication requiring robust secured video data. © 2025 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.

关键词： Medical imaging

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Bioconvection Cross nanofluid flow with Cattaneo-Christov heat and mass fluxes past plate, wedge and cone

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Multiscale and Multidisciplinary Modeling, Experiments and Design 2025年第6期8卷 1-20页

作者： Shah, Muhammad Zameer Khan, Noor Saeed Khan, Waris Boukhris, Imed Kouki, Marouan Agha, Afnan Al Garalleh, Hakim Al Al-Buriahi, M.S. Division of Science and Technology Department of Mathematics University of Education Lahore54000 Pakistan Department of Mathematics and Statistics Hazara University Mansehra Pakistan Central Labs King Khalid University Abha AlQura’aP.O. Box 960 Saudi Arabia Department of Information System Faculty of Computing and Information Technology Northern Border University Rafha Saudi Arabia Department of Mathematical Science College of Engineering University of Business and Technology Jeddah21361 Saudi Arabia Department of Physics Sakarya University Sakarya Turkey

This study examines the bioconvection flow of a Cross nanofluid containing gyrotactic microorganisms over three geometrical configurations: a flat plate, a wedge, and a cone. The significance of this research lies in its incorporation of the Cattaneo-Christov heat and mass flux theory, which accounts for thermal relaxation effects-critical in optimizing heat and mass transfer processes in bioengineering and industrial applications. The study aims to analyze the combined effects of radiative heat transfer, thermophoresis, heat generation/absorption, magnetic field strength and other embedded parameters on fluid behavior. The research employs the Homotopy Analysis Method (HAM) to obtain analytical solution for velocity, temperature, nanoparticle concentration, and gyrotactic microorganism density distribution. The key findings indicate that heat transfer is most efficient over the cone, whereas the wedge exhibits the highest mass transfer rate and microbial concentration. The study further highlights the influence of governing parameters such as buoyancy ratio, relaxation time, and external forces on fluid behavior. These results contribute to a deeper understanding of nanofluid dynamics in biomedical and industrial applications, including microbial-enhanced oil recovery and nanofluid-based drug delivery systems. © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2025.

关键词： SARS

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