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11th International Symposium on Computing and Networking Workshops, CANDARW 2023

作者： Diana, Mery Kiyama, Masato Amagasaki, Motoki Ito, Masayoshi Morishita, Yuki Kumamoto University Graduate School of Science and Technology Kumamoto Japan Kumamoto University Faculty of Advanced Science and Technology Kumamoto Japan Mitsubishi Electric Engineering Tokyo Japan

ISBN: (纸本)9798350306941

Implementing deep learning models (DNN) on edge sites remains challenging. Besides the high complexity of DNN models in their architecture, programming directly in hardware languages requires high-level verification to render these models run on edge devices. By utilizing High-Level Synthesis or HLS technology to generate HDL (Hardware Description Language) containing the DNN model, in this study, we built a DNN translator. DNN translator translates the model and its weights from the Pytorch-based DNN model to C++. The generated C++ files can be synthesized using HLS tools such as Vitis HLS or Vivado HLS. HDLs resulting from the synthesis of generated C++ are provided with HLS Pragmas to optimize the design. This DNN translator provides a solution to expand the application of the DNN model to edge devices, especially FPGA, as one of the potential edge devices. In the implementation, our DNN translator successfully generated C++ files for synthesizing the Multi-layer Perceptron (MLP) and LeNet5 and implemented them in an FPGA, Arty A7-100. © 2023 IEEE.

关键词： Deep neural networks

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Correction to: Concurrent multi-scale optimization of macro- and micro-shapes of laminated porous shell structure

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Structural and multidisciplinary Optimization 2024年第5期67卷 1-7页

作者： Hikasa, Motomu Shimoda, Masatoshi Al Ali, Musaddiq Department of Advanced Science and Technology Graduate School of Engineering Toyota Technological Institute Nagoya Japan Department of Advanced Science and Technology Toyota Technological Institute Nagoya Japan

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Application of CFRTP with braided structure to heavy lift drone frame

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Journal of Textile engineering 2024年第5期70卷 86-91页

作者： Rai, Shinichi Higashi, Koshiro Takachi, Mao Tatsuno, Daichi Wakako, Lina Kinari, Toshiyasu Graduate School of Natural Science and Technology Kanazawa University Kakumamachi Ishikawa Kanazawa920-1192 Japan College of Science and Engineering Kanazawa University Kakumamachi Ishikawa Kanazawa920-1192 Japan Advanced Manufacturing Technology Institute Kanazawa University Kakumamachi Ishikawa Kanazawa920-1192 Japan Institute of Science and Engineering Kanazawa University Kakumamachi Ishikawa Kanazawa920-1192 Japan

Carbon Fiber Reinforced Plastics (CFRP) is used for various mechanical structures such as sporting goods, automobiles, and aircrafts because of its lightweight and high strength. Our research group focused on thermoplastic CFRP (CFRTP) with braided structures. We have conducted research to improve the productivity and strength design of hollow cylindrical pipes by combining CFRTP and braided structures. Applications of CFRTP with a braided structure, this report aims to apply CFRTP to heavy lift drone frames. If metals such as aluminum alloys, which are the main materials of drone frames, can be replaced with CFRTP, weight reduction and payload increase can be expected. However, with the hollow cylindrical CFRTP pipe proposed in previous research, it was not possible to achieve sufficient weight reduction due to the vibration caused by propellers attached to the free end of the frame. In this report, we aimed to improve the rigidity of the CFRTP pipe by changing its design, taking advantage of its tailor-made characteristics, which is an advantage of the CFRTP braid and press molding method. Furthermore, we report on our attempts to improve the dimensional accuracy of the mating parts. © 2024 The Textile Machinery Society of Japan.

关键词： Aluminum alloys

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Evacuation from various types of finite two-dimensional square grid fields by a metamorphic robotic system

Evacuation from various types of finite two-dimensional squa...

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作者： Nakamura, Junya Kamei, Sayaka Yamauchi, Yukiko Information and Media Center Toyohashi University of Technology Aichi Japan Graduate School of Advanced Science and Engineering Hiroshima University Hiroshima Japan Graduate School of Information Science and Electrical Engineering Kyushu University Fukuoka Japan

A metamorphic robotic system (MRS) is composed of anonymous, memoryless, and autonomous modules that execute an identical distributed algorithm to move while keeping the connectivity of the modules. For an MRS, the number of modules required to solve a given task is an important complexity measure. Here, we consider evacuation from a finite two-dimensional square grid field by an MRS. This study aims to establish the minimum number of modules required to solve the evacuation problem under several conditions. We consider a rectangular field surrounded by walls with at least one exit. Our results show that two modules are necessary and sufficient for evacuation from any rectangular field if equipped with a global compass, which provides the modules with a common sense of direction. After that, we focus on the case of modules without a global compass and show that four (resp. seven) modules are necessary and sufficient for restricted (resp. any) initial shapes of an MRS. We also show that two modules are sufficient when an MRS is touching a wall in an initial configuration. Then, we clarify the condition to stop an MRS after evacuation of a rectangular field. Finally, we extend these results to mazes and convex fields. © 2021 John Wiley & Sons Ltd.

关键词： Robotics

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Efficient and stable hybrid perovskite-organic light-emitting diodes with external quantum efficiency exceeding 40 per cent

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Light(science & Applications) 2024年第7期13卷 1364-1371页

作者： Lingmei Kong Yun Luo Qianqian Wu Xiangtian Xiao Yuanzhi Wang Guo Chen Jianhua Zhang Kai Wang Wallace CHChoy Yong-Biao Zhao Hongbo Li Takayuki Chiba Junji Kido Xuyong Yang Key Laboratory of Advanced Display and System Applications of Ministry of Education Shanghai UniversityShanghai 200072China. Institute of Nanoscience and Applications Department of Electrical and Electronic EngineeringSouthern University of Science and TechnologyShenzhen 518055China. Department of Electrical and Electronic Engineering The University of Hong KongHong KongChina. Department of Physics and Lakeside AR/VR Laboratory International Joint Research Center for Optoelectronic and Engineering ResearchYunnan UniversityKunming 650091China. Experimental Center of Advanced Materials School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China. Graduate School of Organic Materials Science Frontier Center for Organic MaterialsYamagata University4-3-16 JonanYonezawa 992–8510Japan

Light-emitting diodes(LEDs)based on perovskite semiconductor materials with tunable emission wavelength in visible light range as well as narrow linewidth are potential competitors among current light-emitting display technologies,but still suffer from severe instability driven by electric ***,we develop a stable,efficient and highcolor purity hybrid LED with a tandem structure by combining the perovskite LED and the commercial organic LED technologies to accelerate the practical application of *** LED and organic LED with close photoluminescence peak are selected to maximize photon emission without photon reabsorption and to achieve the narrowed emission *** designing an efficient interconnecting layer with p-type interface doping that provides good opto-electric coupling and reduces Joule heating,the resulting green emitting hybrid LED shows a narrow linewidth of around 30 nm,a peak luminance of over 176,000 cd m^(−2),a maximum external quantum efficiency of over 40%,and an operational half-lifetime of over 42,000 h.

关键词： diodes narrow quantum

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Developing a Framework for Natural Human Movement Mimicry of Low-Dynamic Motions in Mobile-Based Humanoids

Developing a Framework for Natural Human Movement Mimicry of...

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2025 IEEE/SICE International Symposium on System Integration, SII 2025

作者： Gormuzov, Simon Wang, Yushi Yang, Pinchu Miyake, Tamon Ogata, Tetsuya Sugano, Shigeki Waseda University Graduate School of Creative Science and Engineering Tokyo Japan Waseda University Future Robotics Organization Tokyo Japan Waseda University Faculty of Science and Engineering Tokyo Japan The National Institute of Advanced Science and Technology Tokyo Japan

ISBN: (纸本)9798331531614

In this work, we propose a framework that facilitates natural whole-body movements for a mobile-based humanoid. The framework takes bipedal human motion animation as input. After re-targeting the motion to the robot rig, the joint space data is applied to a physics-enabled robot model for balance confirmation and then deployed one-shot to the real robot. This method is beneficial for: 1) mapping expressive and low-dynamic whole-body motions, such as walking, to mobile-based robots;and 2) serving as a basis for training more complex control policies for more dynamic motions. Experiments were conducted by deploying human walking animations to the robot, assessing its ability to mirror the movements, and evaluating the subjective feelings of humans observing the robot performing the motions generated by both the proposed method and the traditional method. The results indicated that the proposed method is effective for mimicking human movements and consistently delivered a better overall impression in the natural appearance of the motion, the human-like factor, and friendliness. © 2025 IEEE.

关键词： Animation

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Application of three-dimensional MHD equilibrium calculation coupled with plasma response to island divertor experiments on J-TEXT

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Plasma science and technology 2024年第11期26卷 71-86页

作者： Wei XIE Yunfeng LIANG Zhonghe JIANG Yasuhiro SUZUKI Li LI Jiankun HUA Jie HUANG Alexander KNIEPS Song ZHOU Feiyue MAO Xin XU Keze LI Yutong YANG Ziyang JIN Cunkai LI the J-TEXT Team State Key Laboratory of Advanced Electromagnetic Technology International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma PhysicsSchool of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074People’s Republic of China Forschungszentrum Jülich GmbH Institut für Energie-und Klimaforschung-PlasmaphysikPartner of the Trilateral Euregio Cluster(TEC)Jülich 52425Germany Graduate School of Advanced Science and Engineering Hiroshima UniversityHigashi-Hiroshima 739-8527Japan College of Science Donghua UniversityShanghai 201620People’s Republic of China Southwestern Institute of Physics Chengdu 610041People’s Republic of China 不详

Three-dimensional(3D) equilibrium calculations, including the plasma rotation shielding effect to resonant magnetic perturbations(RMPs) produced by the island divertor(ID) coils, were carried out using the HINT and MARS-F codes on J-TEXT. Validation of 3D equilibrium calculations with experimental observations demonstrates that the shielding effect will prevent the penetration of the edge m/n = 3/1 mode component when the ID coil current is 4 k A, while change the size of magnetic islands once the current exceeds the penetration threshold. This indicates that equilibrium calculations including the plasma rotation shielding effect to RMPs can lead to better agreements with experimental observations compared to the vacuum approximation method. Additionally, the magnetic topology at the boundary undergoes changes,impacting the interaction between the plasma and the target plate. These results may be important in understanding RMP effects on edge transport and magnetohydrodynamic(MHD)instability control, as well as divertor heat and particle flux distribution control.

关键词： magnetic topology resonant magnetic perturbation 3D equilibrium shielding effect

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Gradient Boosting Approach to Predict Zero Carbon Achievement of Households in Kitakyushu 9

Gradient Boosting Approach to Predict Zero Carbon Achievemen...

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9th International Conference on Control, Decision and Information Technologies, CoDIT 2023

作者： Singh, Nitin Kumar Fukushima, Takuya Nagahara, Masaaki Graduate School of Advanced Science and Engineering Hiroshima University Higashi Hiroshima739-8527 Japan Graduate School of Science and Technology Nara Institute of Science and Technology 8916-5 Takayama-cho Ikoma Nara630-0192 Japan

ISBN: (纸本)9798350311402

The objective of this paper is to develop a gradient-boosting algorithm based machine-learning model that predicts the zero-carbon achievement of households using 11 months of energy data and questionnaire survey results, obtained from 198 smart houses located in Kitakyushu, Japan. In order to predict the zero-carbon achievement of households, we use LightGBM (light gradient boosting machine) classifier for feature selection and demonstrate that the most important features are the mean absolute error (MAE) of housing type, floor heating, average monthly electricity bill, and average monthly gas bill. This light GBM-based model can also predict the zero carbon achievement of households that did not participate in the questionnaire survey. This model helps us determine households with low carbon emissions and factors that influence zero carbon achievement. The work is currently ongoing, and the results presented in this paper are encouraging and provide valuable insights for developing effective household energy policies, which is a big step towards achieving nearly zero-carbon houses. © 2023 IEEE.

关键词： Forecasting

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Residual alkali-evoked cross-linked polymer layer for anti-air-sensitivity LiNi_(0.89)Co_(0.06)Mn_(0.05)O_(2)cathode

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Journal of Energy Chemistry 2024年第5期92卷 450-458页

作者： Chao Zhao Xuebao Li Yun Zhao Jingjing He Yuanpeng Cao Wei Luo Ding Wang Jianguo Duan Xianshu Wang Baohua Li National and Local Joint Engineering Research Center of Lithium-ion Batteries and Materials Preparation Technology Key Laboratory of Advanced Battery Materials of Yunnan ProvinceFaculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunming 650093YunnanChina School of Materials Science and Engineering Central South UniversityChangsha 410083HunanChina Institute of Materials Research Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055Guangdong China City College Kunming University of Science and TechnologyKunming 650051YunnanChina

High-energy density lithium-ion batteries(LIBs)with layered high-nickel oxide cathodes(LiNi_(x)Co_(y)Mn_(1-x-y)O_(2),x≥0.8)show great promise in consumer electronics and vehicular ***,LiNi_(x)Co_(y)Mn_(1-x-y)O_(2)faces challenges related to capacity decay caused by residual alkalis owing to high sensitivity to *** address this issue,we propose a hazardous substances upcycling method that fundamentally mitigates alkali content and concurrently induces the emergence of an anti-air-sensitive layer on the cathode *** the neutralization of polyacrylic acid(PAA)with residual alkalis and then coupling it with 3-aminopropyl triethoxysilane(KH550),a stable and ion-conductive cross-linked polymer layer is in situ integrated into the LiNi_(0.89)Co_(0.06)Mn_(0.05)O_(2)(NCM)*** characterization and measurements demonstrate its *** NCM material exhibits impressive cycling performance,retaining 88.4%of its capacity after 200 cycles at 5 C and achieving an extraordinary specific capacity of 170.0 mA h g^(-1) at 10 ***,this layer on the NCM efficiently suppresses unfavorable phase transitions,severe electrolyte degradation,and CO_(2)gas evolution,while maintaining commendable resistance to air *** surface modification strategy shows widespread potential for creating air-stable LiNi_(x)Co_(y)Mn_(1-x-y)O_(2)cathodes,thereby advancing high-performance LIBs.

关键词： Lithium-ion batteries Nickel-rich layered cathode Residual alkalis Cross-linked polyme rmodification Airsensitivity

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An Evaluation of IoT Device Performance in Ethereum-Based IoT System

An Evaluation of IoT Device Performance in Ethereum-Based Io...

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2023 RIVF International Conference on Computing and Communication Technologies, RIVF 2023

作者： Kurisaka, Haruki Nguyen, Phi Le Nguyen, Kien Sekiya, Hiroo School of Information and Communications Technology Hanoi University of Science and Technology Viet Nam Graduate School of Science and Engineering Chiba University Japan Institute for Advanced Academic Research Chiba University Japan

ISBN: (纸本)9798350315844

In recent years, there have been an increasing number of IoT applications, such as smart cities, which benefit human lives. The IoT applications face security and privacy protection challenges since they usually adopt a centralized structure (i.e., client-server architecture). The blockchain technology, with decentralized and trustworthy guarantee characteristics, has the potential to solve such IoT challenges. Hence, there are efforts to integrate IoT and blockchain into IoT-Blockchain systems, where the IoT devices are normally battery-powered and low-resource. Therefore, it is essential to understand the performance of IoT devices in cooperating with blockchain, which generally requires significant resources (e.g., computing for consensus). In this paper, we first build a private IoT. Blockchain system using the Ethereum framework and Raspberry Pi4 (RPi4) as IoT devices. We then evaluate the system with two consensus algorithms (i.e., Proof of Work (PoW) and Proof of Authority (PoA)), considering CPU, memory, disk, and power consumption of the IoT devices. The evaluation results show that the power consumption of PoW is double PoA's. Using the mining time data from running PoW on the RPi4, we calculated the expected mining time through curve fitting. © 2023 IEEE.

关键词： Blockchain

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