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2024 IEEE International Conference on Systems, Man, and Cybernetics, SMC 2024

作者： Riese, Sean Mirai Ota, Koichi Gu, Wen Hasegawa, Shinobu Japan Advanced Institute of Science and Technology Division of Advanced Science and Technology Asahidai Nomi Ishikawa9231292 Japan Center for Innovative Distance Education and Research Japan Advanced Institute of Science and Technology Asahidai Nomi Ishikawa9231292 Japan

ISBN: (纸本)9781665410205

Characteristics of Highly Sensitive Persons (HSPs), such as 'depth of processing,' 'overstimulation,' 'emotional reactivity and empathy,' and 'sensitivity to subtleties,' often present challenges due to their high Sensory Processing Sensitivity (SPS) to environmental stimuli. This study investigates the differences in SPS among learners and the impact of various avatars on video presentations, a medium that has seen increased use due to COVID-19. We surveyed 20 participants who engaged with SDG instructional videos featuring four different avatars. Using the HSPS-J19 self-assessment tool, analysis of their SPS responses revealed a normal distribution of SPS scores, indicating individual differences. Additionally, correlations were found between HSPS-J19 scores and participants' impressions and motivation regarding avatar presentations. Cluster analysis results suggested that the group with a higher tendency towards HSP traits benefited more from appropriate avatar use. Based on these findings, we designed an online lecture support environment that allows for the control of video stimuli. This research explores an underexamined area and aims to enhance online lectures for HSPs, who constitute approximately 15% to 20% of the population. Supporting high SPS learners is particularly significant in the post-COVID-19 era. © 2024 IEEE.

关键词： Adversarial machine learning

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Advance Warning Prior to Capacity Plunge of Liquid Metal Battery Using Data-Driven Methods

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IEEE Transactions on Industry Applications 2025年第3期61卷 4147-4154页

作者： Shi, Qionglin Zhou, Min Li, Haomiao Wang, Kangli Jiang, Kai Huazhong University of Science and Technology State Key Laboratory of Advanced Electromagnetic Technology Engineering Research Center of Power Safety and Efficiency Ministry of Education School of Electrical and Electronic Engineering Wuhan430074 China

The liquid metal battery (LMB) has gained attention as a novel energy storage technology due to its exceptional safety and long lifespan. Analyzing the aging trajectory, particularly capacity plunge process, is crucial for understanding its aging mechanism and enabling effective health diagnosis. However, it often lacks clear warning signs prior to the capacity plunge, hindering accurate capacity prediction and proactive measures in real-world applications. To address this challenge, this study proposes a data-driven method that effectively quantifies the capacity various in LMBs, enabling advance warning before the occurrence of a capacity plunge. Firstly, the Empirical Mode Decomposition method decomposes the capacity data into several components, representing different characteristics of LMBs. Subsequently, a Gaussian mixture model is applied to construct the feature distribution for each component, which exhibits a hump-shaped pattern. Finally, The Jensen-Shannon divergence is used to quantify the divergence of these humps, offering a concrete measure of LMB health and aging progression. The proposed method integrating both aging analysis and data-driven insights provides an advance warning of the capacity plunge, offering a reliable foundation for future lifespan prediction and fault diagnosis of LMBs. © 1972-2012 IEEE.

关键词： Network security

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Sensitivity analysis of a dense discrete phase model for 3D simulations of a tapered fluidized bed

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Particuology 2024年第11期94卷 59-83页

作者： Muhammad Adnan Nouman Ahmad Pornpote Piumsomboon Benjapon Chalermsinsuwan Fuel Research Center Department of Chemical TechnologyFaculty of ScienceChulalongkorn UniversityBangkok10330Thailand School of Chemical and Materials Engineering National University of Sciences and TechnologyIslamabad44000Pakistan Advanced Computational Fluid Dynamics Research Unit Chulalongkorn UniversityBangkok10330Thailand

This study aims to conduct a sensitivity analysis of closure models and modeling parameters for the Dense Discrete Phase Modeling(DDPM)approach in order to investigate the hydrodynamics of a 3D lab-scale Tapered Fluidized Bed(TFB).The closure models and model parameters under investigation include the gas-solid drag force,viscous models,particle-particle interaction models,restitution coefficient,specularity coefficient,and rebound *** primary objective of this sensitivity analysis is to optimize the numerical model's *** numerical results,in terms of axial and lateral Solid Volume Fraction(SVF)profiles obtained from the sensitivity analysis,indicate that the drag force and restitution coefficient significantly influence the hydrodynamics of the *** selecting these parameters could result in the improved performance of the numerical ***,the sensitivity of turbulence models,particle-particle interaction models,specularity coefficient,and rebound coefficient has a lesser impact on the hydrodynamics *** work concludes with the recommendation of a set of closure models and modeling parameters that offer the most accurate prediction of the hydrodynamics of the TFB.

关键词： Sensitivity analysis Dense discrete phase model Sub-models Modeling parameters Tapered fluidized bed Hydrodynamics

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Multi-site anchoring lead-halide octahedral by benzylphosphonic acid to regulate phase distribution for efficient PeLEDs

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Nano research 2024年第11期17卷 10034-10041页

作者： Jiahao Tang Yifei Wang Hengyang Xiang Run Wang Kun Zhang Xinyi Lv Xinrui Chen Ziqing Xu Zhesheng Chen Lei Wang Aidi Zhang An Xie Haibo Zeng MIIT Key Laboratory of Advanced Display Materials and Devices Institute of Optoelectronics and Nanomaterials College of Materials Science and Engineering Nanjing University of Science and Technology Nanjing 210094 China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Wuhan 430074 China Engineering Research Center of Functional Polymer Membrane Materials of Jiangsu Province Nanjing Bready Advanced Materials Technology Co. Ltd. Nanjing 211103 China School of Materials Science and Engineering Xiamen University of Technology Xiamen 361024 China

Quasi-two-dimensional perovskite light-emitting diodes (quasi-2D PeLEDs) are emerging as high-potential candidates for new generation of wide-color gamut displays due to their simple, low-cost solution process, and high color purity. However, the luminescence performance of quasi-2D perovskite films is severely limited by dispersed phase distribution and excessive defect density, which are caused by excessive diffusion of nucleation sites during the perovskite growth stage. Here, the benzylphosphonic acid (BPA) molecule, owing to its strong P-O-Pb bond energy sites and strong electronegativity to PEA+, can aggregate lead-halide octahedron to grow high-dimensional phases, avoiding scattered low-dimensional phases (n = 1). The continuous gradient phase distribution will be beneficial to smooth carrier injection and effectively suppress the leakage current in PeLEDs. Meanwhile, the introduction of phosphonic acid groups will fill the vacancies of Pb ions and reduce non-radiative recombination. As a result, the maximum external quantum efficiency (EQE) of PeLEDs can be increased from 8% to 20.6% with a 514 nm light emission and a 21 nm full-width half maximum, and the device lifetime (T 50) is nearly 6-fold of the pristine sample. In addition, this strategy is also suitable for other wavelength. For example, in blue light, performance improvement is also realized that the maximum EQE of 8% and the luminance increased from 1045 to 5264 cd/m2. These results provide a feasible strategy to regulate the phase distribution and passivate the defects of quasi-2D perovskites.

关键词： quasi-2D perovskites light-emitting diodes benzylphosphonic acid phase distribution defect passivation

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CeO2 nanospheres incorporated with Bi2MoO6/g-C3N4 enhanced photocatalysis towards environmental pollutant Rhodamine B removal

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Environmental science and Pollution research 2024年第35期31卷 48103-48121页

作者： Gomathi, Abimannan Ramesh Kumar, Kandasamy Athiyanan Maadeswaran, Palanisamy Advanced Nanomaterials and Energy Research Laboratory Department of Energy Science and Technology Periyar University Salem636011 India Advanced Bioenergy and Biofuels Research Laboratory Department of Energy Science and Technology Periyar University Salem636011 India Center for Instrumentation and Maintenance Facility Periyar University Tamil Nadu Salem636011 India

We have adopted a novel CeO2/Bi2MoO6/g-C3N4-based ternary nanocomposite that was synthesized via hydrothermal technique. The physiochemical characterization of as-prepared samples was examined through various analytical techniques such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy TEM, photoluminescent spectra (PL), X-ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET), and ultraviolet diffuse reflectance spectroscopy (UV-DRS) technique. In addition, the photocatalytic performance was carried out by degradation of Rhodamine B dye under visible light irradiation using this nanocatalyst. The ternary nanocomposite achieved 94% of the degradation efficiency within 100 min which is higher than the pristine and binary composites under the predetermined condition pH = 7, Rhodamine B dye = 5 mg/L, and catalyst concentration = 150 mg/L. The experimental synergetic effect of CeO2/Bi2MoO6/g-C3N4 ternary nanocomposite has been ascribed to the interfacial charge carrier migration between CeO2, Bi2MoO6, and g-C3N4. The optical absorption range of CeO2/Bi2MoO6/g-C3N4 ternary nanocomposite was enhanced, and the band gap was reduced up to 2.2 eV. In addition, scavenger trapping experiment proves that the super oxide anions (O2−.) and photogenerated holes are the major active species. The reusability and stability experiment proved the CeO2/Bi2MoO6/g-C3N4 ternary nanocomposite keeps good durability during the photocatalytic degradation process after the five successive cycles. Furthermore, based on the results, the charge carrier transfer photocatalytic mechanism was also discussed. This CeO2/Bi2MoO6/g-C3N4 ternary nanocomposite may offer the cheapest material and extend the great opportunity for clean and environmental remediation approach under the visible light irradiation. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part

关键词： Bismuth compounds

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Atomistic origin of high grain boundary resistance in solid electrolyte lanthanum lithium titanate

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Journal of Materiomics 2024年第6期10卷 1214-1221页

作者： Shang Peng Yongjin Chen Xuefeng Zhou Mingxue Tang Jianbo Wang Hua Wang Lin Guo Lujun Huang Wenge Yang Xiang Gao Center for High Pressure Science and Technology Advanced Research(HPSTAR) Beijing100094China School of Physics and Technology Center for Electron MicroscopyMOE Key Laboratory of Artificial Micro-and Nano-structuresand Institute for Advanced StudiesWuhan UniversityWuhan430072China School of Chemistry Beijing Advanced Innovation Center for Biomedical EngineeringBeihang UniversityBeijing100191China School of Materials Science and Engineering Harbin Institute of TechnologyP.O.Box 433Harbin150001China

Lanthanum lithium titanate is one of the promising electrolytes for solid-state lithium-ion batteries due to its high bulk ionic conductivity up to∼10^(−3) S/***,the practical application of this material has been bottlenecked by high grain boundary(GB)resistance,while the underlying mechanism is still under *** we report a comprehensive study with direct evidence to reveal the origin of high GB resistance in La_(2/3)–xLi_(3x)TiO_(3)(LLTO).Atomic-scale observations via advanced scanning transmission electron microscopy show that the GBs are uniformly subject to subsurface segregation of La atoms to compensate for the excess surface *** La segregation leads to an abrupt decrease of charge carrier concentration neighboring GBs and hence is supposed to have deleterious effect on GB *** findings suggest a novel mechanism of space-charge-induced cation segregation,which shed lights on the intrinsic origin of low GB ionic conductivity in LLTO.

关键词： Space-charge layer Cation segregation Intergranullar glassy film Solid-state electrolyte Ionic conductivity

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The growth behavior and performance of microarc oxidation coating on AZ91/Ti composite: Influence of Ti-reinforcement phase and electrolyte

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Journal of Magnesium and Alloys 2025年第3期13卷 1160-1175页

作者： Jinchao Jiao Yongrui Gu Jin Zhang Yong Lian Xintao Li Kaihong Zheng Fusheng Pan Institute for Advanced Materials and Technology University of Science and Technology BeijingBeijing 100083China Beijing Key Laboratory of Corrosion Erosion and Surface TechnologyUniversity of Science and Technology BeijingBeijing 100083China Institute of New Materials Guangdong Academy of SciencesGuangzhou 510650China National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing 404100China

Magnesium matrix composites with both high strength and ductility have been achieved by introducing pure Ti ***,the properties of the surfaces of the composites need to be improved by surface technology,such as micro-arc oxidation(MAO).In this study,we investigated the inﬂuence of the Ti-reinforcement phase on coating growth and evolution by subjecting both AZ91 alloy and AZ91/Ti composite to MAO treatment using silicate-based and phosphate-based *** revealed that the Ti-reinforcement phase inﬂuenced the MAO process,altering discharge behavior,and leading to a decreased cell *** vigorous discharge of the Ti-reinforcement phase induced the formation of coating discharge channels,concurrently dissolving and oxidizing Ti-reinforcement to produce a composite ceramic coating with *** MAO coating on the AZ91/Ti composite exhibited a dark blue macromorphology and distinctive local micromorphological *** silicate electrolyte,a“volcano-like”localized morphology centered on the discharge channel *** contrast,treatment in phosphate-based electrolyte resulted in a coating morphology similar to typical porous ceramic coatings,with visible radial discharge micropores at the reinforcement phase *** to the AZ91 alloy,the coating on the AZ91/Ti composite exhibited lower thickness and higher *** treatment reduced the self-corrosion current density of the AZ91/Ti surface by two orders of *** silicate coating demonstrated better corrosion resistance than the phosphate coating,attributed to its lower *** formation mechanism of MAO coatings on AZ91/Ti composites in phosphate-based and silicate-based electrolytes was proposed.

关键词： Magnesium matrix composites Ti-reinforcement Micro-arc oxidation Growth behavior

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Mixed-dimensional stacked nanocomposite structures for a specific wavelength-selectable ambipolar photoresponse

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Nano research 2024年第6期17卷 5549-5558页

作者： Young Jae Park Jaeho Shim Joo Song Lee Kyu Seung Lee Ji-Yeon Kim Kang Bok Ko Sang-Youp Yim Seongjun Kim Hoon-Kyu Shin Donghee Park Yong Ju Yun Dong Ick Son Institute of Advanced Composite Materials Korea Institute of Science and TechnologyJeollabuk-do 55324Republic of Korea National Institute for Nanomaterials Technology Pohang University of Science and TechnologyGyeongsangbuk-do 37673Republic of Korea Department of Semiconductor Science and Technology Semiconductor Physics Research CenterJeonbuk National UniversityJeonju 54896Republic of Korea Advanced Photonics Research Institute Gwangju Institute of Science and TechnologyGwangju 61005Republic of Korea Center for Opto-Electronic Materials and Devices Post-Silicon Semiconductor InstituteKorea Institute of Science and TechnologySeoul 02792Republic of Korea Graduate School of Energy and Environment(KU-KIST Green School) Korea UniversitySeoul 02841Republic of Korea KIST School Department of Nanomaterials and Nano ScienceUniversity of Science and Technology(UST)Daejeon 34113Republic of Korea

Mixed-dimensional composite structures using zero-dimensional(0D)quantum dots(QDs)and two-dimensional(2D)transition metal dichalcogenides(TMDs)materials are expected to attract great interest in optoelectronics due to the potential to generate new optical ***,we report on the unique optical characteristics of a devices with mixed dimensional vertically stacked structures based on tungsten diselenide(WSe_(2))/CdSeS QDs monolayer/molybdenum disulfide(MoS_(2))(2D/0D/2D).Specifically,it exhibits an ambipolar photoresponse characteristic,with a negative photoresponse observed in the 400-600 nm wavelength range and a positive photoresponse appeared at 700 nm *** resulted in the high negative responsivity of up to 52.22 mA·W^(−1)under 400 nm,which is 163 times higher than that of the photodetector without CdSeS *** also demonstrated the negative photoresponse,which could be due to increased carrier collision probability and non-radiative *** modeling and simulation reveal that Auger recombination among the types of non-radiative recombination is the main cause of negative photocurrent ***,we discovered ambipolar photoresponse near a specific wavelength corresponding to the energy of quantum *** study revealed interesting phenomenon in the mixed low-dimensional stacked structure and paved the way to exploit it for the development of innovative photodetection materials as well as for optoelectronic applications.

关键词： mixed-dimension quantum dot heterostructure photodetector ambipolar photoresponse

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Object-Centric Representation Learning with Attention Mechanism 18

Object-Centric Representation Learning with Attention Mechan...

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18th International Conference on Ubiquitous Information Management and Communication, IMCOM 2024

作者： Nakada, Hidemoto Asoh, Hideki Artificial Intelligence Research Center National Institute of Advanced Industrial Science and Technology Tukuba Japan

ISBN: (纸本)9798350331011

For object-centric representation learning, several slot-based methods, that separate objects using masks and learn the objects separately, are proposed. While these methods are proved to be useful on various downstream tasks, it is known that they require a significant amount of computation for training. We propose the introduction of attention mechanisms into slot-based method to simplify and speed up the computation. We pick ViMON as the base structure and propose two methods, named AttnViMON and SFA. We evaluate them in terms of reconstruction error and computation time, and a downstream task. The proposed methods demonstrate that they achieve significant speed-up while showing even better performance. © 2024 IEEE.

关键词： Computer vision

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Kernel-Level Dropout for the Convolution Process in Deep Learning 17

Kernel-Level Dropout for the Convolution Process in Deep Lea...

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17th IEEE International Symposium on Embedded Multicore/Many-core Systems-on-Chip, MCSoC 2024

作者： Kim, Wonjik National Institute of Advanced Industrial Science and Technology Artificial Intelligence Research Center Tsukuba Japan

ISBN: (纸本)9798331530471

This paper proposes a novel kernel-level dropout method for regularizing convolutional neural networks (CNNs). Unlike traditional dropout, which operates at the level of neurons or entire feature maps, kernel-level dropout selectively deactivates individual kernels that connect specific input and output channels. This finer-grained regularization method ensures that the spatial structure of the input data is better preserved while still preventing overfitting by distributing the learning across multiple kernels. The proposed approach is computationally efficient and integrates seamlessly into existing CNN architectures without requiring significant architectural changes. Experimental evaluations on image classification tasks demonstrate the potential of kernel-level dropout to improve generalization compared to traditional methods such as spatial dropout. Introducing selective kernel deactivation offers a promising alternative for enhancing the robustness and performance of CNNs. © 2024 IEEE.

关键词： Deep learning

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