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Asia-Pacific Conference on Microwave

作者： Cheng-Chung Lin Ai-Jung Lee Wei-Chen Chiu Yi-Chan Lu Chemical Systems Research Division National Chung-Shan Institute of Science and Technology Taoyuan Taiwan System Development Center National Chung-Shan Institute of Science and Technology Taoyuan Taiwan

In our previous paper, we proposed a novel method of microwave tomography in which the target echo position in two dimensions can be achieved by combining time-domain signals generated by vector network analyzer and orderly variation of optical path contributed from microrotation (Lin, Chiu, and Lee (2022)). In this study, a correction approach based on group delay is proposed for dealing with the phase-wrapping problem if the rotational interval is not quite small. The approach has been verified with the three-target experiments, and the corrected image precisely showed the positions of the targets.

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Dynamic Inversion-Based Adaptive Fault Tolerant Control for Heavy Launch Vehicles with Non-lethal Actuator Faults

Dynamic Inversion-Based Adaptive Fault Tolerant Control for ...

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Fully Actuated system Theory and Applications (CFASTA), Conference on

作者： Ruitao Zhang Hang Guo Tian Yan Guangyu Yang Wenxing Fu Unmanned System Research Institute Northwestern Polytechnical University Xi’an China Research Center for Unmanned System Strategy Development Northwestern Polytechnical University Xi’an China School of Marine Science and Technology Northwestern Polytechnical University Xi’an China

This paper proposes the dynamic inversion-based adaptive fault tolerant control for heavy launch vehicles with non-lethal actuator faults. Firstly, the attitude dynamics model and fault model of heavy launch vehicles are formulated. Secondly, based on the dynamic inversion theory, the ideal controller is designed. Then, the controller and adaptive law are designed for actuator gain faults and bias faults. Meanwhile, the Lyapunov function is constructed to prove that all signals in the closed-loop system are uniformly convergent. Finally, numerical simulation results show the effectiveness and the satisfactory performance of the proposed control algorithm.

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Anomalous Sound Detection, Extraction, and Localization for Refrigerator Units Using a Microphone Array 48

Anomalous Sound Detection, Extraction, and Localization for ...

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48th Annual Conference of the IEEE Industrial Electronics Society, IECON 2022

作者： Nishikawa, Akihito Hattori, Kazuhiro Tanaka, Motomasa Muranami, Hiroaki Nishi, Hiroaki Keio University Graduate School of Science and Technology Yokohama Japan Mayekawa MFG. Co. Ltd. Research and Development Center R&d Division Tokyo Japan Keio University Faculty of Science and Technology Department of System Design Yokohama Japan

ISBN: (数字)9781665480253

ISBN: (纸本)9781665480253

Anomaly detection is one of the key applications of data utilization in smart factories, particularly in monitoring factory facilities. Early detection and resolution of anomalies, such as system failures, can lead to cost reduction and quality stabilization. One of the targets of abnormality detection applications in the industry section is a refrigerator unit used in food processing factories and warehouses. Anomalies in the early stages in refrigerator units appear in the operating sounds, which can enable their detection. In this study, we propose a method for detecting abnormal sound, extracting abnormal frequency components, and identifying the direction of the abnormal sound source. To identify the direction of the anomalous sound source, multi-channel sound recorded by a microphone array is used. To the best of our knowledge, no method has yet been proposed for anomaly sound detection using multi-channel acoustic data. In the proposed method, anomaly scores calculated in each channel of the microphone array are aggregated to determine whether the entire data is anomalous or not. Anomalous sounds were extracted from the anomaly data using a deep generative model. The extracted anomalous sounds were used to localize the sound source and the direction of the anomalous source was identified. The proposed method improved the precision of anomaly sound detection while maintaining the recall rate of a conservative comparison method. Using the proposed method, anomalous sounds were extracted from the anomaly data, and their arrival directions were identified. © 2022 IEEE.

关键词： Cost reduction

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Automatic Ray-Sum Panoramic Synthesis from Cone-Beam CT Data

Automatic Ray-Sum Panoramic Synthesis from Cone-Beam CT Data

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Biomedical Engineering International Conference (BMEiCON)

作者： Duangkamol Banarsarn Walita Narkbuakaew Kongyot Wangkaoom Saowanee Iamsiri Saowapak S. Thongvigitmanee Medical Imaging System Research Team Assistive Technology and Medical Devices Research Center National Science and Technology Development Agency Pathumthani Thailand

ISBN: (纸本)9781665489041

A panoramic image can be reconstructed from a cone-beam CT (CBCT) dataset to manifest anatomical structures of all teeth in a patient’s mouth in one image. This research proposed a new automatic method to synthesize a ray-sum panoramic image from a dental CBCT dataset. The objective of the proposed method was to create the curve segment over the whole dental arch to instantly generate a ray-sum panoramic image. We applied the proposed algorithm to eighteen datasets, and all processes were computed under the web browser’s environment. From the results, the curve segments were consistently generated for all datasets. The edges of anatomical structures in the panoramic image were enhanced. On average, the computational time was under 5 seconds to compute the large volumetric data sized 500x500x450 voxels. In conclusion, the proposed method was functional for the web application. A raysum panoramic was quickly synthesized, and anatomical structures were clearly displayed in a web browser.

关键词： Image segmentation Computed tomography Image edge detection Anatomical structure Teeth Dentistry Browsers

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A Combination of a 3D Surface Model and CBCT Images for Dental Applications Using VTK Library

A Combination of a 3D Surface Model and CBCT Images for Dent...

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Biomedical Engineering International Conference (BMEiCON)

作者： Walita Narkbuakaew Kongyot Wangkaoom Duangkamol Banarsarn Chalinee Thanasupsombat Saowanee Iamsiri Saowapak S. Thongvigitmanee Medical Imaging System Research Team Assistive Technology and Medical Devices Research Center National Science and Technology Development Agency Pathumthani Thailand

ISBN: (纸本)9781665489041

In dental applications, information of the soft-and-hard tissues’ surfaces from an intraoral scan or a dental cast helps a user to enhance visualization of anatomical structures in cone-beam computed tomography (CBCT) images. This paper presents a combination process based on the Visualization Toolkit (VTK) library. The proposed process consisted of three main steps: landmark identification, 3D surface registration, and visualization of alignment’s quality. In experiments, the tissue’s surfaces were acquired from intraoral scans and dental casts, and these surfaces were combined with several CBCT data. The results showed that all three parts of the proposed process performed smoothly. A combination of CBCT data and tissue’s surfaces obviously presented good quality of alignment and improved visualization of anatomical structures although qualities of CBCT data were dropped by image noises and some artifacts.

关键词： Solid modeling Three-dimensional displays Shape Data visualization Metals Teeth Anatomical structure

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Anti-swing Coordinated Control of the UAV Wing Folding During the Aerial Recovery Process

Anti-swing Coordinated Control of the UAV Wing Folding Durin...

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International Conference on Guidance, Navigation and Control, ICGNC 2022

作者： Liu, Yiheng Wang, Honglun Wang, Yanxiang Fan, Jiaxuan School of Automation Science and Electrical Engineering Beihang University Beijing100191 China Beijing Institute of Astronautical System Engineering Beijing100076 China Shenyuan Honors College of Beihang University Beijing100191 China The Science and Technology On Aircraft Control Laboratory Beihang University Beijing100191 China Research and Development Center of China Academy of Launch Vehicle Technology Beijing100071 China

ISBN: (纸本)9789811966125

In the process of UAV aerial recovery, the UAV needs to fold its wings, which will lead to a sharp drop in the lift and cause the cable to sway. Aiming at this problem, an anti-swing coordinated control method of wing folding based on quadratic programming control allocation is proposed. It can make full use of the grid rudder of the drogue to compensate the lift lost caused by wing folding and use quadratic programming to allocate the rudder deflection angle that can not only satisfy the moment balance, but also satisfy the force balance, so as to realize the coordinated control of the drogue grid rudder and the UAV rudder surface. simulations are conducted to verify the effectiveness of the proposed control method. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Unmanned aerial vehicles (UAV)

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The neural basis of sharing information through goal-directed conversation: A hyperscanning functional magnetic resonance imaging study

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Cortex 2025年 187卷 74-97页

作者： Koike, Takahiko Okazaki, Shuntaro Sumiya, Motofumi Nakagawa, Eri Hirotani, Masako Sadato, Norihiro Department of System Neuroscience Division of Cerebral Integration National Institute for Physiological Sciences (NIPS) Aichi Okazaki Japan Department of Physiological Sciences School of Life Science SOKENDAI (The Graduate University for Advanced Studies) Kanagawa Hayama Japan Inter-Individual Brain Dynamics Collaboration Unit RIKEN CBS-TOYOTA Collaboration Center Center for Brain Science RIKEN Saitama Wako Japan Research Center for Child Mental Development Hamamatsu University School of Medicine Hamamatsu Japan Department of Socio-Information Studies Faculty of Informatics Shizuoka University Hamamatsu Japan School of Linguistics and Language Studies Carleton University Ottawa ON Canada Research Organization of Science and Technology Ritsumeikan University Kusatsu Japan

The human brain maintains internal models of physical and social environments, representing an individual's “subjectivity”. Through conversation, two or more individuals share their models and modify them based on the exchange, a process that represents and is referred to as “intersubjectivity.” To investigate the neural substrates of this dynamic process, hyperscanning functional magnetic resonance imaging was conducted to test the hypothesis that Inter-Brain Synchronization (IBS) in the default mode network (DMN) is involved in representing intersubjectivity. Twenty-four Japanese-speaking participant pairs played maze games over a two-day period. Each participant pair received a different maze, i.e., a maze with a different pathway to its goal. Although pairs shared a maze, each participant in a pair had only partial knowledge of the maze layout and what they knew about the layout differed. Taking turns, participants moved their pieces to their goals. Since each had only partial information about the pathway, effective communication between partners was important. Behavioral data showed participants' conversation about potential maze piece moves significantly increased as the game proceeded, implying that the exchange for such information was critical. Correspondingly, the DMN increased task-related activation, including the dorsomedial prefrontal cortex (dmPFC) and the bilateral temporoparietal junction (TPJ), extending through the superior temporal sulcus to the temporal pole and the right middle frontal gyrus. Within these areas, the dmPFC and the right TPJ showed task- and partner-specific IBS throughout all games. Thus, the DMN is likely required for representing intersubjectivity, based on internal models shared through real-time conversations. © 2025 The Author(s)

关键词： Default mode network Dorsomedial prefrontal cortex Functional magnetic resonance imaging Intersubjectivity Temporoparietal junction

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Evaluaton on Configuration and Economic Performances of Large-Scale Wind Power to Ammonia system with Different Installation Locations and Operation Strategies

Evaluaton on Configuration and Economic Performances of Larg...

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China International Electrical and Energy Conference (CIEEC)

作者： Weipeng Tao Meiqin Mao Jixun Wu Haining Wang Shaokun Zou Research Center for Photovoltaic System Engineering Ministry of Education Hefei University of Technology Hefei Anhui China Hefei Sungrow New Energy Development Co. Ltd. Hefei Anhui China

ISBN: (数字)9798350359558

ISBN: (纸本)9798350359565

The green ammonia system powered with wind energy generators not only improves the utilization of installed wind power systems, but also reduces ammonia plant carbon emissions. However, due to the fluctuation of renewable energy in wind turbine (WT) generation systems, the operating points of the wind power to ammonia (WPtA) system fluctuate in a wide range, which greatly reduces the overall operation efficiency and reliability of the system. To this end, this paper proposes a capacity optimization configuration model of WPtA system for GW-scale. By the proposed model, the minimum unit ammonia cost is adopted as the objective function considering the operation constraints and strategies of different system configuration and different installation sites to optimize the configurations of main components such as the capacity of electrolysis hydrogen production system, chemical energy storage system, hydrogen storage system and synthetic ammonia system. Taking the GW-scale WPtA system as an example, the impact of five different installation sites on the optimal configuration and economic performances of the system is discussed and compared with different strategies of the system configuration and operation.

关键词： Ammonia Wind Renewable energy sources Hydrogen storage Costs Wind energy Hydrogen

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Decreased panicle N application alleviates the negative effects of shading on rice grain yield and grain quality

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Journal of Integrative Agriculture 2023年第7期22卷 2041-2053页

作者： WEI Huan-he GE Jia-lin ZHANG Xu-bin ZHU Wang DENG Fei REN Wan-jun CHEN Ying-long MENG Tian-yao DAI Qi-gen Jiangsu Key Laboratory of Crop Cultivation and Physiology/Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Research Institute of Rice Industrial Engineering Technology/College of Agriculture Yangzhou UniversityYangzhou 225009P.R.China Institutes of Agricultural Sciences and Technology Development/Joint International Research Laboratory of Agriculture and Agri-Product Safety Ministry of Education/College of AgricultureYangzhou UniversityYangzhou 225009P.R.China Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province/Key Laboratory of Crop Ecophysiology and Farming System in Southwest China Ministry of Agriculture and Rural Affairs/College of AgronomySichuan Agricultural UniversityChengdu 611130P.R.China

Light deficiency is a growing abiotic stress in rice ***,few studies focus on shading effects on grain yield and quality of rice in East *** is also essential to investigate proper nitrogen(N)application strategies that can effectively alleviate the negative impacts of light deficiency on grain yield and quality in rice.A two-year field experiment was conducted to explore the effects of shading(non-shading and shading from heading to maturity)and panicle N application(NDP,decreased panicle N rate;NMP,medium panicle N rate;NIP,increased panicle N rate)treatments on rice yield-and quality-related *** with non-shading,shading resulted in a 9.5-14.8%yield loss(P<0.05),mainly due to lower filled-grain percentage and grain *** and NIP had higher(P<0.05)grain yield than NDP under non-shading,and no significant difference was observed in rice grain yield among NDP,NMP,and NIP under *** with NMP and NIP,NDP achieved less yield loss under shading because of the increased filled-grain percentage and grain *** reduced leaf photosynthetic rate after heading,as well as shoot biomass weight at maturity,shoot biomass accumulation from heading to maturity,and nonstructural carbohydrate(NSC)content in the stem at maturity(P<0.05).The harvest index and NSC remobilization reserve of NDP were increased under *** decreased(P<0.05)percentages of brown rice,milled rice,head rice,and amylose content while increasing(P<0.05)chalky rice percentage,chalky area,chalky degree,and grain *** demonstrated a better milling quality under non-shading,while NDP demonstrated under *** exhibited both lower chalky rice percentage,chalky area,and chalky degree under non-shading and shading,compared with NMP and *** under shading decreased amylose content and breakdown but increased grain protein content and setback,contributing to similar overall palatability to *** results suggested severe g

关键词： rice grain yield grain quality shading panicle N application

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华北农村清洁取暖成本收益的空间不均衡

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Science Bulletin 2024年第12期69卷 1852-1856页

作者：张伟张鹏飞赵静汪峰尚昱竹方培薛文博张鹏岩宋玲玲蒋洪强王金南李佳硕 State Environmental Protection Key Laboratory of Environmental Planning and Policy Simulation Chinese Academy of Environmental PlanningBeijing 100041China The Center for Beijing-Tianjin-Hebei Regional Environment and Ecology Chinese Academy of Environmental PlanningBeijing 100041China Institute of Blue and Green Development Shandong UniversityWeihai 264209China School of Business Nanjing University of Information Science&TechnologyNanjing 210044China Institute of Climate Economy and Low-carbon Industry Nanjing University of Information Science&TechnologyNanjing 210044China Center of Air Quality Simulation and System Analysis Chinese Academy of Environmental PlanningBeijing 100041China School of Urban Economics and Public Administration Capital University of Economics and BusinessBeijing 100070China

Bulk coal combustion in rural households is a major contributor to PM_(2.5)pollution in Northern China[1,2].To promote the energy transition and reduce bulk coal combustion for heating in rural areas,China initiated the Winter Clean Heating Action Plan in Rural Northern China in 2017,hereinafter referred to as rural clean heating(RCH)[3].The 2+26 region,comprising Beijing,Tianjin,and 26 other municipalities in the surrounding area(Fig.S1 online),is the key implementation area for the RCH.

关键词：华北农村 Rural 成本收益

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