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arXiv 2023年

作者： Xu, Minrui Du, Hongyang Niyato, Dusit Kang, Jiawen Xiong, Zehui Mao, Shiwen Han, Zhu Jamalipour, Abbas Kim, Dong In Shen, Xuemin Leung, Victor C.M. Poor, H. Vincent The School of Computer Science and Engineering Nanyang Technological University Singapore639798 Singapore The School of Automation Guangdong University of Technology Key Laboratory of Intelligent Information Processing and System Integration of IoT Ministry of Education Guangzhou510006 China Guangdong-HongKong-Macao Joint Laboratory for Smart Discrete Manufacturing Guangzhou510006 China The Pillar of Information Systems Technology and Design Singapore University of Technology and Design Singapore487372 Singapore The Department of Electrical and Computer Engineering Auburn University AuburnAL36849-5201 United States The Department of Electrical and Computer Engineering University of Houston HoustonTX77004 United States The Department of Computer Science and Engineering Kyung Hee University Seoul446-701 Korea Republic of The School of Electrical and Information Engineering University of Sydney SydneyNSW2006 Australia The Department of Electrical and Computer Engineering Sungkyunkwan University Suwon16419 Korea Republic of The Department of Electrical and Computer Engineering University of Waterloo WaterlooONN2L 3G1 Canada The College of Computer Science and Software Engineering Shenzhen University Shenzhen518061 China The Department of Electrical and Computer Engineering The University of British Columbia VancouverBCV6T 1Z4 Canada The Department of Electrical and Computer Engineering Princeton University PrincetonNJ08544 United States

Artificial Intelligence-Generated Content (AIGC) is an automated method for generating, manipulating, and modifying valuable and diverse data using AI algorithms creatively. This survey paper focuses on the deployment of AIGC applications, e.g., ChatGPT and Dall-E, at mobile edge networks, namely mobile AIGC networks, that provide personalized and customized AIGC services in real time while maintaining user privacy. We begin by introducing the background and fundamentals of generative models and the lifecycle of AIGC services at mobile AIGC networks, which includes data collection, training, fine-tuning, inference, and product management. We then discuss the collaborative cloud-edge-mobile infrastructure and technologies required to support AIGC services and enable users to access AIGC at mobile edge networks. Furthermore, we explore AIGC-driven creative applications and use cases for mobile AIGC networks. Additionally, we discuss the implementation, security, and privacy challenges of deploying mobile AIGC networks. Finally, we highlight some future research directions and open issues for the full realization of mobile AIGC networks. © 2023, CC BY.

关键词： Life cycle

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船用反应堆冷却剂泵连续调速研究

船用反应堆冷却剂泵连续调速研究

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第八届(2012)北京核学会核应用技术学术交流会

作者： LI Feng-yu 李凤宇 LU Gu-bing 陆古兵 CHEN Zhi 陈智 College of Naval Architecture&Power Naval University of Engineering Wuhan 430033 China 海军工程大学船舶与动力学院湖北武汉 430033 Science and Technology on Reactor System Design Technology LaboratoryNuclear Power Institute of China Chendu 610041 China 中国核动力研究设计院核反应堆系统设计技术重点实验室四川成都 610041

采用船用核动力装置模拟程序，对反应堆冷却剂泵转速连续调节研究进行仿真试验研究。在相同的40％满功率工况下，进行冷却剂泵转速阶跃变化与连续变化两种试验。对比了反应堆进出口温度、反应堆功率、反应堆反应性、冷却剂流量、蒸发器... 详细信息

采用船用核动力装置模拟程序，对反应堆冷却剂泵转速连续调节研究进行仿真试验研究。在相同的40％满功率工况下，进行冷却剂泵转速阶跃变化与连续变化两种试验。对比了反应堆进出口温度、反应堆功率、反应堆反应性、冷却剂流量、蒸发器蒸汽压力等参数的变化情况，对开展船用反应堆冷却剂泵连续调速设计具有重要的指导意义。

关键词：船用反应堆冷却剂泵转速调节仿真分析

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Corrigendum to Model behavior regarding in- and below-cloud 137 Cs wet scavenging following the Fukushima accident using 1-km-resolution meteorological field data [Sci. Total Environ. 872 (2023) 162165]

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science of The Total Environment 2024年 922卷

作者： Shuhan Zhuang Sheng Fang Daisuke Goto Xinwen Dong Yuhan Xu Li Sheng Institute of Nuclear and New Energy Technology Collaborative Innovation Centre of Advanced Nuclear Energy Technology Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education Tsinghua University Beijing 100084 China National Institute for Environmental Studies 16-2 Onogawa Tsukuba Ibaraki 305-8506 Japan Earth System Modeling and Prediction Center China Meteorological Administration Beijing 100081 China

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SI-YOLO: A Deep Learning Algorithm Suitable for Surgical Instrument Detection

SSRN

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SSRN 2022年

作者： Liu, Zhenzhong Zhou, Yifan Sun, Qiyuan Wang, Yan Polat, Kemal Nour, Majid Alenezi, Fayadh Alhudhaif, Adi Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control School of Mechanical Engineering Tianjin University of Technology Tianjin300384 China Tianjin300384 China Department of Electrical and Electronics Engineering Bolu Abant Izzet Baysal University Bolu14280 Turkey Department of Electrical and Computer Engineering Faculty of Engineering King Abdulaziz University Jeddah21589 Saudi Arabia Department of Electrical Engineering College of Engineering Jouf University 72238 Saudi Arabia Department of Computer Science College of Computer Engineering and Sciences in Al-kharj Prince Sattam bin Abdulaziz University P.O. Box 151 Al-Kharj 11942 Saudi Arabia

Surgical instrument detection and tracking is one of the core technologies of surgical robots, which can assist clinicians in completing operations. However, existing methods need further improvement in terms of real-time performance and accuracy. We propose a deep learning algorithm, SI-YOLO, for detection of surgical instruments. SimAM attention mechanism is used to improve the feature extraction ability of YOLOv5. Replacing PANet with BiFPN in the neck network improves the feature fusion strategy. The α-IoU loss function is used to improve the regression accuracy of detection boxes. The mAP and FPS of the SI-YOLO reach 99.2% and 120 frames/sec, respectively. Aiming at the problem of ID transformation in the disappearance and occlusion of surgical instruments, the Inception-ResNet-v2 structure is added on the basis of the appearance feature extraction network Cosine of the DeepSort tracking algorithm. Combining SI-YOLO with the improved DeepSort implements the Tracking by Detection (TBD) algorithm. In the case of device disappearance or occlusion, the frequency of ID transitions is reduced by approximately 30%. Finally, we built a simulated surgery experimental platform, established our own data set, and realized the preliminary application of the proposed algorithm. © 2022, The Authors. All rights reserved.

关键词： Object detection

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Corrigendum to “Co-deposition characteristics of hydrates and sands in gas-salty water-sands flow system” [Fuel 346 (2023) 128276]

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Fuel 2023年 352卷

作者： Lihao Liu Bohui Shi Shangfei Song Yuchuan Chen Xinhao Luo Shijia Zhang Huirong Huang Haiyuan Yao Guangjin Chen Jing Gong National Engineering Laboratory for Pipeline Safety/ MOE Key Laboratory of Petroleum Engineering/Beijing Key Laboratory of Urban Oil and Gas Distribution Technology China University of Petroleum-Beijing Beijing 102200 China State Key Laboratory of Natural Gas Hydrates Beijing 100028 China China’s Oil and Gas Exploration and Development Company Beijing 100034 China CNOOC EnerTech Equipment Technology Research & Design Center Tianjin 300452 China School of Petroleum Engineering Chongqing University of Science & Technology Chongqing 401331 China CNOOC Research Institute Ltd. Beijing 100028 China

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Superparamagnetic Reduced Graphene Oxide with Large Magnetoresistance: A Surface Modulation Strategy

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Angewandte Chemie 2016年第9期128卷

作者： Jing Peng Yuqiao Guo Haifeng Lv Xinyu Dou Qi Chen Jiyin Zhao Changzheng Wu Xiaojiao Zhu Yue Lin Wei Lu Xiaojun Wu Yi Xie Hefei National Laboratory for Physical Sciences at the Microscale iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Hefei Science Center (CAS) and CAS Key Laboratory of Mechanical Behavior and Design of Materials University of Science & Technology of China Hefei 230026 PR China CAS Key Lab of Materials for Energy Conversion Department of Materials Science and Engineering University of Science & Technology of China Hefei 230026 PR China i-Lab Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences Suzhou 215123 PR China

The graphene system is actively pursued in spintronics for its nontrivial sp electron magnetism and its potential for the flexible surface chemical tuning of magnetoelectronic functionality. The magnetoresistance (MR) of graphene can be effectively tuned under high magnetic fields at cryogenic temperatures, but it remains a challenge to achieve sensitive magnetoelectric response under ambient conditions. We report the use of surface modulation to realize superparamagnetism in reduced graphene oxide (rGO) with sensitive magnetic field response. The superparamagnetic rGO was obtained by a mild oxidation process to partially remove the thiol groups covalently bound to the carbon framework, which brings about large low‐field negative MR at room temperature (−8.6 %, 500 Oe, 300 K). This strategy provides a new approach for optimizing the intrinsic magnetoelectric properties of two‐dimensional materials.

关键词： Magnetische Eigenschaften Magnetwiderstand Oberflächenmodulierung Reduziertes Graphenoxid Superparamagnetismus

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Anionic Chemistry Modulation Enabled Environmental Self-Charging Aqueous Zinc Batteries: The Case of Carbonate Ions

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Angewandte Chemie 2024年第39期136卷

作者： Guangmeng Qu Lu Wang Yongzheng Zhao Dedong Wang Xixi Zhang Bin Wang Fengbo Wang Zhongxin Jing Xijin Xu Liqiang Xu Hongfei Li Key Laboratory of Colloid and Interface Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shandong University Jinan Shandong 250100 P. R. China School of Physics and Technology University of Jinan Jinan Shandong 250022 P. R. China School of System Design and Intelligent Manufacturing Southern University of Science and Technology Shenzhen Guangdong 518055 China

Anionic chemistry modulation represents a promising avenue to enhance the electrochemical performance and unlock versatile applications in cutting-edge energy storage devices. Herein, we propose a methodology that involves anionic chemistry of carbonate anions to tailor the electrochemical oxidation-reduction reactions of bismuth (Bi) electrodes, where the conversion energy barrier for Bi (0) to Bi (III) has been significantly reduced, endowing anionic full batteries with enhanced electrochemical kinetics and chemical self-charging property. The elaborately designed batteries with an air-switch demonstrate rapid self-recharging capabilities, recovering over 80 % of the electrochemical full charging capacity within a remarkably short timeframe of 1 hour and achieving a cumulative self-charging capacity of 5 Ah g −1 . The aqueous self-charging battery strategy induced by carbonate anion, as proposed in this study, holds the potential for extending to various anionic systems, including seawater-based Cl − ion batteries. This work offers a universal framework for advancing next-generation multi-functional power sources.

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Corrigendum to “Load-bearing behaviors of sandwich plates with non-uniformly distributed grid cores: Dynamic impact and blast” [Mater. Today Commun., vol. 40, (2024), 110163]

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Materials Today Communications 2024年 41卷

作者： Youlong Wang Haixia Yang Jie Chen Quanjin Ma Yiheng Song Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education School of Civil Engineering Southeast University Nanjing 211189 PR China School of System Design and Intelligent Manufacturing Southern University of Science and Technology Shenzhen 518055 PR China School of Engineering The University of Tokyo Tokyo 113-8656 Japan

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INTEGRATED SHIP MACHINERY systemS REVISITED

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NAVAL ENGINEERS JOURNAL 1989年第3期101卷 93-101页

作者： LEVEDAHL, WJ The author:is the assistant for technology in the Propulsion and Auxiliary Systems Department of the David Taylor Research Center (DTRC) Annapolis Md. After a World War II combat tour as a 15th AAF P-51 fighter pilot he received a B.S. in general engineering from MIT and was elected to Sigma Xi. He subsequently studied gas turbines and aeronautical engineering at ETH in Zurich and as a National Science Foundation Fellow he received his Doktor Ingenieur in applied thermodynamics at the TH Aachen Germany. He conducted basic research in combustion at the National Bureau of Standards and was head of advanced submarine reactor core design at the Knolls Atomic Power Laboratory (General Electric) during the 1950s. He then joined Combustion Engineering as chief project physicist in the design of central-station reactors. Subsequently he become manager of research at Martin Marietta involved largely in direct energy conversion for outer space. In 1970 he joined DTRC to establish the Superconductive Electric Propulsion Program and in 1974 assumed his present position. He has received the Distinguished Flying Cross and the Meritorious Civilian Service Award. Dr. Levedahl joined ASNE in 1978.

In the late 1980s, the world of U.S. Navy surface combatants is confronted with three new needs: to reduce ship signatures by factors of 10 to 1000; to provide ten-gigawatt power pulses to new combat systems; and to reduce the high cost of hull, mechanical and electrical (HM&E) systems by taking advantage of newly-available technology. These needs have caused an active response of the surface-ship community to the many apparent benefits of integrated machinery systems. The acoustic signature problem accelerated interest in integrated machinery systems. A substantial reduction in noise at cruise speeds requires the elimination of propeller cavitation and requires reductions in machinery noise. The use of contrarotating tractor propellers driven by bicoupled epicyclic gears and an alternating-current electric motor in a pod which faces directly into the flow stream is potentially capable of such performance; even better would be a contrarotating superconductive electric motor in the pod. No other concept seems even remotely competitive with these. The major reductions in installed power, fuel consumption, and reduced displacement reported in the April 1980 Naval Engineers Journal are retained. Large reductions in infrared signature and further reductions in fuel consumption are provided by intercooled recuperated gas turbines. An integrated electric propulsion system provides the opportunity to temporarily “borrow” power from the propulsion system and transform it into pulses for advanced combat systems. Not only the power of the turbines, but also the kinetic energy of the ship are available.

关键词： Ship Equipment

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Corrigendum to “Oscillation-free source term inversion of atmospheric radionuclide releases with joint model bias corrections and non-smooth competing priors” [J. Hazard. Mater. 440 (2022) 129806]

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Journal of Hazardous Materials 2023年 445卷

作者： Sheng Fang Xinwen Dong Shuhan Zhuang Zhijie Tian Tianfeng Chai Yuhan Xu Yungang Zhao Li Sheng Xuan Ye Wei Xiong Institute of Nuclear and New Energy Technology Collaborative Innovation Centre of Advanced Nuclear Energy Technology Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education Tsinghua University Beijing 100084 China China Institute for Radiation Protection Taiyuan 030006 China NOAA Air Resources Laboratory (ARL) NOAA Center for Weather and Climate Prediction 5830 University Research Court College Park MD 20740 USA Cooperative Institute for Climate and Satellites University of Maryland College Park MD 20740 USA Key Laboratory of Beam Technology of Ministry of Education College of Nuclear Science and Technology Beijing Normal University Beijing 100875 China CTBT Beijing National Data Centre and Beijing Radionuclide Laboratory Beijing 100085 China CMA Earth System Modeling and Prediction Center (CEMC) Beijing 100081 China

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