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49th European Conference on Optical Communications, ECOC 2023

作者： Okamura, Shuki Osawa, Kyogo Zhang, Chao Ito, Fumihiko Nakamura, Atsushi Koshikiya, Yusuke Graduate School of Natural Science and Technology Shimane University Japan Interdisciplinary Faculty of Science and Engineering Shimane University Japan Access Network Service Systems Laboratories NTT Corporation Japan

ISBN: (纸本)9781839539954

Two-dimensional linear optical sampling is presented for observing ultrafast spatiotemporal complex signals. By directly observing complex cross-sectional images, the technique is useful for spatial modes of multimode/multicore fibres. The intramodal delay differences in step-index and gradedindex fibres are analysed with a ps-level time resolution. © The Institution of engineering & technology 2023.

关键词： Multimode fibers

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Fundamental study on sway-free cabin for all aircrafts

Fundamental study on sway-free cabin for all aircrafts

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2024 International Conference on Control, Automation and Diagnosis, ICCAD 2024

作者： Ichikawa, Yukihiro Aso, Shigeru Yamamoto, Ikuo Katayama, Masayuki Uchihori, Hiroshi Nagasaki University Graduate School of Engineering Nagasaki Nagasaki Japan Kurume Institute of Technology Mobility Systems Engineering Fukuoka Kurume City Japan Nagasaki University Organization For Marine Science and Technology Nagasaki Nagasaki Japan

ISBN: (纸本)9798350361025

Generally aircraft cabin receives translational accelerations in 3 axes and rotational accelerations around 3 axes during flight. Those translational and rotational accelerations generate uncomfortable movements and vibrations of aircraft. The purpose of the present study is to realize a sway-free cabin inside the aircraft. In order to realize sway-free cabin, fundamental data of the commercial jet transport have been measured and analyzed. The results show that pitch angle of jet transport varies from -4 degrees to 30 degrees against to local horizon, maximum angular velocity is 0.25 rad/s in pitching motion, and maximum acceleration is 4.65 m/s2 in z axis. To realize sway-free cabin, motions of aircraft are divided into two motions of angular motions and translational motions. Angular motions can be solved by using gimbal mechanism. For translational motions horizontal and lateral motions can be dumped by just like air caster. However, vertical motion needs special treatment. In the present study to compensate vertical motion of sway-free cabin special equipment has been newly proposed. The equipment moves in order to compensate vertical motion of sway-free *** Mat lab analysis has been conducted to make sure the block diagram of the mechanism of compensation of vertical motion of sway-free cabin. The results show proposed special equipment and the mechanism of compensation of vertical motion of sway-free cabin can work well to realize sway-free cabin. © 2024 IEEE.

关键词： Cabins (aircraft)

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Single-to-Multi Music Track Composition Using Interactive Chaotic Evolution 13th

Single-to-Multi Music Track Composition Using Interactive Ch...

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13th International Conference on Frontier Computing, FC 2023

作者： Hung, Ying Kai Pei, Yan Li, Jianqiang Graduate School of Computer Science and Engineering University of Aizu Fukushima Aizuwakamatsu965-8580 Japan Faculty of Information Technology Beijing University of Technology Beijing100124 China

ISBN: (纸本)9789819993413

This research presents a new music generation model and a novel MIDI data format for MIDI music generation. This innovative data format allows us to process MIDI music in a manner analogous to video analysis. Initially, the model employs Convolutional Neural Networks (CNN) as an encoder to effectively capture local and global features within the musical data. Subsequently, we utilize a Transformer as a decoder, leveraging its self-attention mechanism to handle the long-term dependencies present in music data. In the training process, an interactive chaotic algorithm is introduced to update the model’s weights, assisting the model in avoiding entrapment in local optima. This enhances the learning efficiency of the model and improves the quality of the generated output, enabling the model to generate music, including accompaniment, that aligns with human aesthetics from any given melody. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd 2024.

关键词： Music

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VIETNAMESE-FOCUSED COLOR-BASED MODELS FOR DYADS EXPRESSING FOR ROBOTS

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International Journal of Innovative Computing, Information and Control 2025年第2期21卷 287-305页

作者： Huyen, Dao Thanh Mai, Nghia Thi Tanaka, Suzuka Hashikura, Kotaro Kamal, Md Abdus Samad Murakami, Iwanori Yamada, Kou Graduate School of Science and Technology Gunma University 1-5-1 Tenjincho Kiryu376-8515 Japan Faculty of Electronics Engineering 1 Posts and Telecommunications Institute of Technology 122 Hoang Quoc Viet Road Cau Giay District Hanoi11355 Viet Nam

Robots capable of human communication play crucial roles in various daily tasks, particularly in nursing and mental healthcare. Effective emotion expression is essential for robots to perform these tasks proficiently. However, prior methods for robot emotion expression often involve complex designs, making them costly and impractical for widespread application. Additionally, color-based methods for emotional expression have not been thoroughly explored within the Vietnamese cultural context, where nuances in color interpretation are significant. This study is the first to specifically investigate cultural differences in emotional expression for robots using colors and gradients tailored to Vietnamese demographics. Moreover, we propose a simple, cost-effective design for robot emotion expression that addresses the shortcomings of previous approaches, which rely on complex and expensive designs, while still being capable of expressing complicated emotions such as dyads. Experimental results demonstrate the effectiveness of these models in conveying extended emotional states and dyads, independent of traditional human-like expressions. These findings underscore the practical potential of such models, particularly within Vietnamese nursing and mental healthcare sectors. © 2025 ICIC International.

关键词： Nursing

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Development of deep neural network model to predict the compressive strength of FRCM confined columns

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Frontiers of Structural and Civil engineering 2022年第10期16卷 1213-1232页

作者： Khuong LE-NGUYEN Quyen Cao MINH Afaq AHMAD Lanh Si HO Department of Civil Engineering University of Transport TechnologyHanoi 100000Vietnam Faculty of Arts and Design University of CanberraBruce ACT 2617Australia Department of Civil Engineering University of Engineering and TechnologyTaxila 47080Pakistan Graduate School of Advanced Science and Engineering Hiroshima UniversityHiroshima 739-8527Japan

The present study describes a reliability analysis of the strength model for predicting concrete columns confinement influence with Fabric-Reinforced Cementitious Matrix(FRCM).through both physical models and Deep Neural Network model(artificial neural network(ANN)with double and triple hidden layers).The database of 330 samples collected for the training model contains many important parameters,i.e.,section type(circle or square),corner radius rc,unconfined concrete strength fco,thickness nt,the elastic modulus of fiber Ef,the elastic modulus of mortar *** results revealed that the proposed ANN models well predicted the compressive strength of FRCM with high prediction *** ANN model with double hidden layers(APDL-1)was shown to be the best to predict the compressive strength of FRCM confined columns compared with the ACI design code and five physical ***,the results also reveal that the unconfined compressive strength of concrete,type of fiber mesh for FRCM,type of section,and the corner radius ratio,are the most significant input variables in the efficiency of FRCM confinement *** performance of the proposed ANN models(including double and triple hidden layers)had high precision with R higher than 0.93 and RMSE smaller than 0.13,as compared with other models from the literature available.

关键词： FRCM deep neural networks confinement effect strength model confined concrete

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Predictive modeling of flexible EHD pumps using Kolmogorov-Arnold Networks

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Biomimetic Intelligence & Robotics 2024年第4期4卷 109-111页

作者： Yanhong Peng Yuxin Wang Fangchao Hu Miao He Zebing Mao Xia Huang Jun Ding College of Mechanical Engineering Chongqing University of TechnologyChongqing 400054China Department of Mechanical Systems Engineering Nagoya UniversityTokai National Higher Education and ResearchNagoya 464-8603Japan School of Energy and Power Jjiangsu University of Science and TechnologyZhenjiang 212100China Faculty of Engineering Yamaguchi UniversityYamaguchi 755-8611Japan

We present a novel approach to predicting the pressure and flow rate of flexible electrohydrodynamic pumps using the Kolmogorov-Arnold *** by the Kolmogorov-Arnold representation theorem,KAN replaces fixed activation functions with learnable spline-based activation functions,enabling it to approximate complex nonlinear functions more effectively than traditional models like Multi-Layer Perceptron and Random *** evaluated KAN on a dataset of flexible EHD pump parameters and compared its performance against RF,and MLP *** achieved superior predictive accuracy,with Mean Squared Errors of 12.186 and 0.012 for pressure and flow rate predic-tions,*** symbolic formulas extracted from KAN provided insights into the nonlinear relationships between input parameters and pump *** findings demonstrate that KAN offers exceptional accuracy and interpretability,making it a promising alternative for predictive modeling in electrohydrodynamic pumping.

关键词： Kolmogorov-Arnold Networks Electrohydrodynamic pumps Neural network

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Basis Sequence Reconfiguration in the Union of Matroids 35

Basis Sequence Reconfiguration in the Union of Matroids

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35th International Symposium on Algorithms and Computation, ISAAC 2024

作者： Hanaka, Tesshu Iwamasa, Yuni Kobayashi, Yasuaki Okada, Yuto Saito, Rin Faculty of Information Science and Electrical Engineering Kyushu University Fukuoka Japan Graduate School of Informatics Kyoto University Japan Faculty of Information Science and Technology Hokkaido University Sapporo Japan Graduate School of Informatics Nagoya University Japan Graduate School of Information Sciences Tohoku University Sendai Japan

ISBN: (纸本)9783959773546

Given a graph G and two spanning trees T and T′ in G, Spanning Tree Reconfiguration asks whether there is a step-by-step transformation from T to T′ such that all intermediates are also spanning trees of G, by exchanging an edge in T with an edge outside T at a single step. This problem is naturally related to matroid theory, which shows that there always exists such a transformation for any pair of T and T′. Motivated by this example, we study the problem of transforming a sequence of spanning trees into another sequence of spanning trees. We formulate this problem in the language of matroid theory: Given two sequences of bases of matroids, the goal is to decide whether there is a transformation between these sequences. We design a polynomial-time algorithm for this problem, even if the matroids are given as basis oracles. To complement this algorithmic result, we show that the problem of finding a shortest transformation is NP-hard to approximate within a factor of clog n for some constant c > 0, where n is the total size of the ground sets of the input matroids. © Tesshu Hanaka, Yuni Iwamasa, Yasuaki Kobayashi, Yuto Okada, and Rin Saito.

关键词： Polynomial approximation

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Finite-time robust performance improvement for non-linear systems in the presence of input non-linearity and external disturbance

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IET Control Theory and Applications 2023年第6期17卷 672-682页

作者： Wang, Haoping Ghaffari, Valiollah Mobayen, Saleh Bartoszewicz, Andrzej Fekih, Afef Assawinchaichote, Wudhichai School of Automation Nanjing University of Science and Technology Nanjing China Department of Electrical Engineering Persian Gulf University Bushehr Iran Graduate School of Intelligent Data Science National Yunlin University of Science and Technology Yunlin Douliou Taiwan Institute of Automatic Control Lodz University of Technology Lodz Poland Department of Electrical and Computer Engineering University of Louisiana at Lafayette LafayetteLA United States Department of Electronic and Telecommunication Engineering Faculty of Engineering King Mongkut's University of Technology Thonburi Bangkok Thailand

The main focus of this research is on improving the performance of dynamic systems with actuator non-linearities and time-varying disturbances. To this end, using the concept of finite-time stability, a novel observer is presented to estimate the disturbances in systems with input non-linearities. Then, introducing an innovative sliding manifold, a robust observer-based technique is derived to guarantee the finite-time stability of the sliding surface. Hence, the closed-loop system would be stable in the presence of hard non-linearities and time-varying disturbances. The performance of the proposed approach was assessed in using a simulation study of two numerical examples. The obtained results and comparison with a conventional method confirmed the benefits of the suggested approach. © 2022 The Authors. IET Control Theory & Applications published by John Wiley & Sons Ltd on behalf of The Institution of engineering and technology.

关键词： Closed loop systems

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Consensus Building using Deep Reinforcement Learning for Energy Management

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IEIE Transactions on Smart Processing and Computing 2022年第4期11卷 284-291页

作者： Tarutani, Yuya Oishi, Isato Fukushima, Yukinobu Yokohira, Tokumi Faculty of Interdisciplinary Science and Engineering in Health Systems Okayama University Okayama Prefecture Okayama Japan Graduate School of Natural Science and Technology Okayama University Okayama Prefecture Okayama Japan Faculty of Natural Science and Technology Okayama University Okayama Prefecture Okayama Japan

A variety of information is collected from IoT devices. As those devices become more familiar to users, network services must consider the influence of the user. We propose a method to maximize the value from power consumption and minimize the cost incurred to ensure user satisfaction. However, one problem is that user satisfaction cannot increase because it is considered a constraint on power consumption. In this paper, we propose a consensus building method to minimize power consumption and maximize user satisfaction. An exhaustive search incurs a large calculation overhead to determine device parameters. Thus, the proposed method uses reinforcement learning to solve this problem. From its evaluation, we clarify that the proposed method attains about 1.5 times the total reward compared with the conventional method. Moreover, we also clarify that 99.9% of the total reward can be achieved, compared to the exhaustive search. © 2022 Institute of Electronics and Information Engineers. All rights reserved.

关键词： Reinforcement learning

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Regulating the inner Helmholtz plane structure at the electrolyte-electrode interface for highly reversible aqueous Zn batteries

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Journal of Energy Chemistry 2024年第8期95卷 57-67,I0002页

作者： Jianghe Liu Sanlue Hu Hexin Guo Guobin Zhang Wen Liu Jianwei Zhao Shenhua Song Cuiping Han Baohua Li Shenzhen Key Laboratory on Power Battery Safety and Shenzhen Geim Graphene Center Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055GuangdongChina Shenzhen Key Laboratory of Advanced Materials School of Materials Science and EngineeringHarbin Institute of TechnologyShenzhen 518055GuangdongChina Faculty of Materials Science and Energy Engineering/Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055GuangdongChina Shenzhen HUASUAN Technology Co. Ltd.Shenzhen 518055GuangdongChina

The development of aqueous Zn batteries is limited by parasitic water reactions,corrosion,and dendrite *** address these challenges,an inner Helmholtz plane(IHP)regulation method is proposed by employing low-cost,non-toxic maltitol as the electrolyte *** preferential adsorption behavior of maltitol can expel the water from the inner Helmholtz plane,and thus hinder the immediate contact between Zn metal and H_(2)***,strong interaction between maltitol and H_(2)O molecules can restrain the activity of H_(2)***,the"IHP adsorption effect"along with the low LUMO energy level of maltitol-CF_(3)SO_(3)^(-)can promote the in-situ formation of an organic-inorganic complex solid electrolyte interface(SEI)*** a result,the hydrogen/oxygen evolution side reaction,corrosion,and dendrites issues are effectively suppressed,thereby leading to highly reversible and dendrite-free Zn plating/*** Zn‖I_(2)battery with hybrid electrolytes also demonstrates high electrochemical performance and ultralong cycling stability,showing a capacity retention of 75%over 20000 charge-discharge cycles at a large current density of 5 A g^(-1).In addition,the capacity of the device has almost no obvious decay over20000 cycles even at-30℃.This work offers a successful electrolyte regulation strategy via the IHP adsorption effect to design electrolytes for high-performance rechargeable Zn-ion batteries.

关键词： Inner Helmholtz plane Adsorption effect Dendrite suppression SEI layer Zn||I_(2)battery

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