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2nd International Conference on Smart Technologies for Smart Nation, SmartTechCon 2023

作者： Mustare, Narendra B. Nisha, B. Bala Sundara Ganapathy, N. Whitin, Priscilla Galande, Bhagwati G. Londhe, Aoudumber d. Department Of Electronics and Instrumentation Engineering CVR College of Engineering Hyderabad India Department of Computer Applications Noorul Islam Center for Higher Education K K. District Kumaracoil India Department of Information Technology Panimalar Engineering College Nazarethpet Poonamallee Chennai India Department of EEE Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology Avadi Chennai India Department of Information Technology Smt. Kashibai Navale College of Engineering Pune India

ISBN: (纸本)9798350305418

The life activities of earthworms, such as feeding, burrowing and excreting metabolites, may have direct or indirect effects on soil properties and chemical behavior of heavy metals in soil. By studying the growth and changes of plant roots, we can get the ecological parameters of plant growth environment, such as temperature, humidity, wind speed, precipitation and evapotranspiration, and help us study various meteorological conditions. Based on digital image processing technology and knowledge of plant root structure, this paper designs a simulation model of earthworm ecological restoration of soil plant system based on image segmentation algorithm. In this paper, the automatic segmentation method of plant root system image is mainly divided into three steps, that is, firstly, the green component image of root system image is enhanced by Gaussian matched filter, then the center line of root system is extracted by Hessian matrix method from the processed image, and finally the root system pixels are detected. The results show that the error rate of this algorithm is reduced by 2.36% and 4.88% respectively compared with the comparison algorithm, which further demonstrates the effectiveness of this algorithm, and completely realizes the segmentation of plant roots. © 2023 IEEE.

关键词： Earthworm Ecological restoration Image segmentation Soil plants

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Low-Profile 5G mmWave Antenna-in-Package with dual-Polarization Operation

Low-Profile 5G mmWave Antenna-in-Package with Dual-Polarizat...

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Asia-Pacific Conference on Microwave

作者： M. Idrees Magray Saou-Wen Su Peng-Hao Juan Jui-Han Lu Antenna Design Department Advanced EM and Wireless Communication R&D R&D Center ASUSTek Computer Inc Taipei Taiwan Department of Electronic Communication Engineering National Kaohsiung University of Science and Technology Kaohsiung Taiwan

A compact 5G mmWave antenna-in-package (AiP) with a low-profile 5-layered substrate is proposed in this conference paper. A very thin liquid crystal polymer (LCP) substrate topology is utilized with an overall thickness of 0.5 mm (around $0.05\lambda_{\mathbfr}$ at 28 GHz) only. The proposed antenna is dual-polarized and with a shorted patch radiator and a magnetic dipole radiator, which respectively contribute to the horizontal polarization (H-pol) and the vertical polarization (V-pol). For H-pol, the shorted patch radiator is excited by aperture coupled feeding via dual slots present in the ground plane. Additionally, two resonant $TM_{1/2,0,0}^{z}$ and $TM_{1,0,0}^{z}$ modes are excited in the patch that aids in the wideband coverage. For V-pol, the microstrip magnetic dipole radiator is fed by the coaxial feedline and loaded with a reflector behind the dipole to improve the front-to-back ratio. Both the orthogonal antenna ports cover the n257 5G mmWave frequency band (26.5-29.5 GHz). An optimal peak gain of more than 7.5 dBi is achieved for both antenna ports.

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Wireless, Multifunctional System-Integrated Programmable Soft robot

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Nano-Micro Letters 2025年第7期 20-33页

作者： Sungkeun Han Jeong-Woong Shin Joong Hoon Lee Bowen Li Gwan-Jin Ko Tae-Min Jang Ankan dutta Won Bae Han Seung Min Yang dong-Je Kim Heeseok Kang Jun Hyeon Lim Chan-Hwi Eom So Jeong Choi Huanyu Cheng Suk-Won Hwang KU-KIST Graduate School of Converging Science and Technology Korea University Semiconductor R&D Center Samsung Electronics Co.Ltd. SK Hynix Department of Engineering Science and Mechanics The Pennsylvania State UniversityUniversity Park Center for Neural Engineering The Pennsylvania State UniversityState CollegeUniversity Park Department of Integrative Energy Engineering Korea University Hanwha Systems Co. Ltd. Department of Materials Science and Engineering The Pennsylvania State UniversityState CollegeUniversity Park Materials Research Institute The Pennsylvania State UniversityState CollegeUniversity Park Center for Biomaterials Biomedical Research InstituteKorea Institute of Science and Technology (KIST) Department of Mechanical Engineering The Pennsylvania State UniversityUniversity Park

Soft robots have partially or entirely provided versatile opportunities for issues or roles that cannot be addressed by conventional machine robots, although most studies are limited to designs, controls, or physical/mechanical motions. Here, we present a transformable, reconfigurable robotic platform created by the integration of magnetically responsive soft composite matrices with deformable multifunctional electronics. Magnetic compounds engineered to undergo phase transition at a low temperature can readily achieve reversible magnetization and conduct various changes of motions and shapes. Thin and flexible electronic system designed with mechanical dynamics does not interfere with movements of the soft electronic robot, and the performances of wireless circuit, sensors, and devices are independent of a variety of activities, all of which are verified by theoretical studies. demonstration of navigations and electronic operations in an artificial track highlights the potential of the integrated soft robot for on-demand, environments-responsive movements/metamorphoses, and optoelectrical detection and stimulation. Further improvements to a miniaturized, sophisticated system with material options enable in situ monitoring and treatment in envisioned areas such as biomedical implants.

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IAM-ACGAN: A High-Accuracy Approach for SAr Image Augmentation

IAM-ACGAN: A High-Accuracy Approach for SAR Image Augmentati...

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IEEE International Symposium on Geoscience and remote Sensing (IGArSS)

作者： Jiahui Li Shunjun Wei Yifei Hu Mou Wang Xiaoling Zhang Yuanyuan Zhou School of Information and Communication Engineering University of Electronic Science and Technology of China Chengdu P.R.China Multisensor Intelligent Detection and Recognition Technologies R&D Center of CASC Chengdu China

ISBN: (数字)9798350360325

ISBN: (纸本)9798350360332

Limited by the scarcity of synthetic aperture radar (SAr) systems, image augmentation is of great significance to SAr image detection, target recognition, and other application fields. However, traditional image augmentation methods rarely consider the SAr imaging mechanism, resulting in the inability to accurately reflect the anisotropic characteristics of target scattering. This paper introduces a novel SAr image augmentation method based on rebooting auxiliary classifier generative adversarial networks (re-ACGAN), named IAM-ACGAN (Integrating Attention Mechanism with ACGAN). In this scheme, IAM-ACGAN integrates two attention mechanisms, channel attention (CA) and spatial attention (SA), into the discriminator of the GAN backbone to enhance classification accuracy. These two mechanisms can enhance the channel and spatial features of the input SAr images respectively. A self-constructed simulation ship dataset and a MSTAr real dataset both demonstrate the effectiveness of IAM-ACGAN. Compared with ACGAN and re-ACGAN augmentation methods, IAM-ACGAN can provide higher image generation accuracy.

关键词： Measurement Attention mechanisms Accuracy Target recognition Scattering Generative adversarial networks radar polarimetry

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decision-Making Based on reinforcement Learning and Model Predictive Control Considering Space Generation for Highway On-ramp Merging

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IFAC-PapersOnLine 2022年第27期55卷 241-246页

作者： Hikaru Kimura Masaki Takahashi Kazuhiro Nishiwaki Masahiro Iezawa Department of System Design Engineering Keio University Yokohama Japan Advanced Technology R&D Center Mitsubishi Electric Corporation

reducing traffic accidents pertaining to autonomous vehicles has garnered attention. Merging on a highway is one of the most challenging problems that must be addressed for the realization of autonomous vehicles. It is difficult because an agent must decide where to merge in a complex and ever-changing environment. Merging with congested highway traffic involves significant interaction with vehicles in the main lane. If there is no space for the autonomous vehicle to merge, it needs to work on vehicles in the main lane to create space and subsequently decide to merge or not. reinforcement learning (rL) is a promising method for solving decision-making problems. However, it is difficult to guarantee the safety of the controller obtained using rL. Therefore, we propose a combined method in which decision-making is performed by rL and vehicle control by model predictive control (MPC) to ensure safety. The performance of the proposed system is tested by simulations. The proposed system made appropriate decisions according to the situation, and by controlling the vehicle in consideration of collision avoidance constraints, it showed a high merge success rate evenin a crowded situation.

关键词： Autonomous Vehicles reinforcement learning Model predictive control Merging decision making Advanced driver assistance system

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Comprehensive Study on the Slat Noise of 30P30N High-Lift Airfoil Basd on High-Order Wall-resolved Large-Eddy Simulation

arXiv

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arXiv 2024年

作者： Zhang, Keli Lin, Shizhi Liu, Peiqing Liu, Shihao Liu, Kai Beihang University Beijing100191 China Rankyee Technology Beijing Beijing100097 China School of Aeronautic Science and Engineering China Solver R&D and Development Center CTO

This study presents wall-resolved large-eddy simulations (WrLES) of a high-lift airfoil, based on high-order flux reconstruction (Fr) commercial software dimaxer, which runs on consumer level GPUs. A series of independence tests are conducted, including various Ffowcs Williams-Hawkings sampling surfaces, different mesh densities, simulations at 4tℎ and 5tℎ order accuracies, and varying spanwise lengths, to establish best practice for predicting slat noise through high-order WrLES. The results show excellent agreement with experimental data while requiring significantly fewer computational resources than traditional second-order methods. An investigation on the effects of reynolds number (re) is performed by scaling the airfoil size, with reynolds numbers ranging from 8.55 × 105 to a real aircraft level of 1.71 × 107. By applying simple scaling through Strouhal number (St), spanwise correction, and distance from the receiver, the far-field noise spectra for different reynolds numbers can be coincided. Additionally, simulations are performed at four angles of attack: 3◦, 5.5◦, 9.5◦, and 14◦. The results indicate that higher angles of attack lead to a less intense feedback loop, resulting in lower tonal noise frequencies and reduced noise amplitude. The maximum noise reduction observed is over 14dB when comparing 14◦ to 3◦. Furthermore, an improved formula is proposed to enhance the prediction of slat noise tonal frequencies and to better elucidate the mechanism behind tonal noise generation. Copyright © 2024, The Authors. All rights reserved.

关键词： reynolds number

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超薄锡掺杂氧化镓结合高k栅介质:硅基兼容的4英寸功率场效应晶体管阵列

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Science Bulletin 2024年第12期69卷 1848-1851页

作者：刘子淳李佳诚杨惠霞杨涵黄元张逸韵黎沛涛马远骁王业亮 School of Integrated Circuits and Electronics and Yangtze Delta Region Academy Beijing Institute of TechnologyBeijing 100081China Department of Electrical and Electronic Engineering The University of Hong KongHong Kong 999077China R&D Center for Solid-state Lighting Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China

Gallium oxide(Ga_(2)O_(3)),a novel ultrawide-bandgap(UWBG)semiconductor,has attracted considerable attention owing to its large bandgap of up to 4.9 eV,a high breakdown electric field of 8 MV/cm,and a high Baliga's figure of merit exceeding 3000[1,2].These remarkable properties strongly support its potential applications in power electronics,extreme environmentresistance devices,and solar-blind detectors[1–3].

关键词：功率场效应晶体管高k栅介质氧化镓

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A New Pixel Circuit for Active Matrix Mini&Micro Light Emitting diodes 5

A New Pixel Circuit for Active Matrix Mini&Micro Light Emitt...

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5th IEEE International Conference on Electronics technology, ICET 2022

作者： Huo, Wenxue Xiao, Juncheng Xu, Fengchao Zhou, Hang Peking University Shenzhen Graduate School School of Electronic and Computer Engineering Guangdong Shenzhen China Tcl China Star Optoelectronics Technology Co. Ltd. R&d Center Guangdong Shenzhen China

ISBN: (纸本)9781665485081

A novel pixel circuit with indium gallium zinc oxide thin-film transistors (IGZO-TFTs) for driving active-matrix Mini& Micro light-emitting diode (AM-MLEd) display is proposed. The pixel circuit is built with seven n-type IGZO-TFTs and two capacitors. It can be conducted both under Pulse Amplitude Modulation (PAM) mode and Pulse Width Modulation (PWM) mode, bringing about more gray levels and a better picture quality. The pixel circuit can compensate for the threshold voltage (VTH) deviation of the driving TFT(T2) in the PAM mode through external compensation method. It also can compensate for the threshold voltage (Vth) deviation of the driving TFT (T4) in the PWM mode through the internal compensation circuit. The simulation results show that the pixel circuit under the T2 detecting timing can accurately detect the Vth of T2. On this basis, correct compensation can function well through adjusting data input value by external IC. The simulation results also demonstrate that when the deviation of the T4 threshold voltage occurs ± 1V, the average bit error rate of the light-emitting time is 2%. Therefore, the circuit can effectively compensate the VTH of T4. As a result, the proposed pixel circuit with hybrid driving mode exhibits high immunity to the threshold voltage deviation of T2 and T4, and good brightness uniformity of AM-MLEd display can be obtained. © 2022 IEEE.

关键词： Pulse amplitude modulation

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A Method for determining Optimal Parameters in Aggregation of distributed Energy resources

A Method for Determining Optimal Parameters in Aggregation o...

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Consumer technology (ICCT-Pacific), International Conference on

作者： Hirotaka Takano Takahisa Fukuda Hiroshi Asano Nguyen duc Tuyen Tatsuya Oyama Hisashi Kato Kiyotaka Matsuura Takashi Honma Department of Electrical Electronic and Computer Engineering Gifu University Gifu Japan Department of Electrical Engineering Hanoi University of Science and Technology Hanoi Vietnum R&D Center Tohoku Electric Power Co. Inc. Sendai Japan R&D Department Hokkaido Electric Power Co. Inc. Ebetsu Japan

ISBN: (数字)9798331504120

ISBN: (纸本)9798331504137

This paper presents a method to calculate parameters for aggregating distributed energy resources (dErs), especially electricity consumption of customers. In dEr aggregation, energy resource aggregators reward customers complying with requests of demand response. On the other hand, the aggregators need to financially offset opportunity losses of retail electricity suppliers caused by the dEr aggregation. This is the negawatt compensation. In the authors' proposal, electricity trading is expressed as a problem of social welfare maximization, allowing changes in the profits of aggregators, retailers, and customers to be measured. As a result, the unit prices of monetary rebate to customers and negawatt compensation to retailers can be calculated mathematically.

关键词： Hands Energy resources Electricity Electric variables measurement Pricing Numerical simulation Power markets demand response distributed power generation Proposals

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resource control of access networks responding to a dynamic change in application requirements

Resource control of access networks responding to a dynamic ...

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International Conference on Information Networking

作者： Seiji Kozaki Hiroshi Mineno Yuta Tachikawa ryo Murakami Yuki Hatanaka Tetsuya Yokotani Takeshi Suehiro Kenichi Nakura Satoshi Shirai The Graduate School of Science and Technology Shizuoka University Hamamatsu Japan College of Engineering Kanazawa Institute of Technology Nonoichi Japan Graduate School of Engineering Kanazawa Institute of Technology Nonoichi Japan Information Technology R&D Center Mitsubishi Electric Corporation Kamakura Japan

ISBN: (数字)9798350330946

ISBN: (纸本)9798350330953

Access network systems are studied to accommodate a variety of services and applications using next-generation communication systems, e.g., 5th Generation Mobile Communication System (5G) and Beyond5G. These communication systems have architectures and mechanisms designed to ensure communication quality other than mere traffic capacity, i.e., high reliability and low latency. However, in terms of the usage of network systems for various applications, it is necessary to consider a wide range of usage conditions, such as time and location of network connection. In this case, the important network requirements are establishing control methods that span different networks and control schemes that can respond to dynamic changes in the usage ***’ previous research focused on controlling optical access networks that can be controlled in common for different networks, generating traffic models focused on 5G, and studying resource control schemes for optical access networks designed to carry 5G *** this study, authors take on the challenge of responding to the dynamic requirements changes at the service and application level. In particular, the authors propose a new resource control method and a system configuration that enables integrated control of wireless and wired networks. One of purposes of the proposal is achievement of network resource allocation function that can follow traffic fluctuations caused by the movement of mobile entity carrying terminals. The authors evaluate the effect of adding terminal mobility information to the resource control of the optical access network to improve the responsiveness to the traffic fluctuations.

关键词： Wireless communication Integrated optics Fluctuations 5G mobile communication Optical design Optical fiber networks dynamic scheduling

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