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CSEE Journal of Power and Energy Systems 2022年第5期8卷 1338-1351页

作者： hongsheng xu Jinyu Wen Qinran Hu Jiao Shu Jixiang Lu Zhihong Yang State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical Electronic Engineering Huazhong University of Science and TechnologyWuhan 430074China NARI Group Corporation Nanjing 211106China School of Electrical Engineering Southeast UniversityNanjing 210096China State Key Laboratory of Smart Grid Protection and Control Nanjing 211106China

The joint optimization problem of energy procurement and retail pricing for an electricity retailer is converted into separately determining the optimal procurement strategy and optimal pricing strategy,under the“price-taker”*** aggregate energy consumption of end use customers(EUCs)is predicted to solve for the optimal procurement strategy vis a long short-term memory(LSTM)-based supervised learning *** optimal retail pricing problem is formulated as a Markov decision process(MDP),which can be solved by using deep reinforcement learning(DRL)***,the performance of existing DRL approaches may deteriorate due to their insufficient ability to extract discriminative features from the time-series vectors in the environmental *** propose a novel deep deterministic policy gradient(DDPG)network structure with a shared LSTM-based representation network that fully exploits the Actor’s and Critic’s *** designed shared representation network and the joint loss function can enhance the environment perception capability of the proposed approach and further improve the optimization performance,resulting in a more profitable pricing *** simulations demonstrate the effectiveness of the proposed approach.

关键词： Deep reinforcement learning electricity market energy procurement long short-term memory retail pricing

Weakly supervised temporal action localization with proxy metric modeling

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Frontiers of Computer Science 2023年第2期17卷 63-72页

作者： hongsheng xu Zihan CHEN Yu ZHANG Xin GENG Siya MI Zhihong YANG NARI Group Corporation(State Grid Electric Power Research Institute) Nanjing 211106China School of Computer Science and Engineering and the Key Lab of Computer Network and Information Integration(Ministry of Education)Southeast UniversityNanjing 211189China School of Cyber Science and Engineering Southeast UniversityNanjing 211189China Purple Mountain Laboratories Nanjing 211111China

Temporal localization is crucial for action video *** the manual annotations are expensive and time-consuming in videos,temporal localization with weak video-level labels is challenging but *** this paper,we propose a weakly-supervised temporal action localization approach in untrimmed *** settle this issue,we train the model based on the proxies of each action *** proxies are used to measure the distances between action segments and different original action *** use a proxy-based metric to cluster the same actions together and separate actions from *** with state-of-the-art methods,our method achieved competitive results on the THUMOS14 and ActivityNet1.2 datasets.

关键词： temporal action localization weakly supervised videos proxy metric

Growth and Characteristics of Tunable Laser Crystals β-Ga2O3∶Cr

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Journal of Rare Earths 2006年第z1期24卷 156-158页

作者： Zhang Jungang Xia Changtai Deng Qun xu Wusheng Shi hongsheng Wu Feng xu Jun Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 China Graduate School of the Chinese Academy of Sciences Beijing 100039 China Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 China GE (China) Research and Development Center Co. Ltd. Shanghai 201203 China GE (China) Research and Development Center Co. Ltd. Shanghai 201203 China GE (China) Research and Development Center Co. Ltd. Shanghai 201203 China Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 China Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 China

β-Ga2O3∶Cr single crystals have potential applications for tunable laser. In β-Ga2O3 crystal structure Cr3+ ions are in octahedron other than tetrahedron. So the Cr3+ ions are influenced by low field of β-Ga2O3 that results the 4T2 to 4A2 transition and show broad emission around 690 nm. β-Ga2O3 single crystals doped with different Cr3+ concentrations were grown by floating zone technique. Their absorption spectra and fluorescence spectra were measured at room temperature. The values of field splitting parameter Dq and Racah parameter B were calculated based on the absorption spectra.

关键词： β-Ga2O3 Cr floating zone technique tunable laser

Dissolution kinetics and thermodynamic analysis of vanadium trioxide during pressure oxidation

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Rare Metals 2012年第3期31卷 296-302页

作者： Zhou, xuejiao Wei, Chang Xia, Wentang Li, Minting Li, Cunxiong Deng, Zhigan xu, hongsheng Faculty of Metallurgical and Energy Engineering Kunming University of Science and Technology Kunming 650093 China School of Metallurgical and Materials Engineering Chongqing University of Science and Technology Chongqing 401331 China

The dissolution kinetics of vanadium trioxide in sulphuric acid-oxygen medium was examined. It was determined that the concentration of sulphuric acid and stirring speed above 800 r min 1 did not significantly affect vanadium extraction. The dissolution rate increased with increasing temperature and oxygen partial pressure, but decreased with increasing particle size. The dissolution kinetics was controlled by the chemical reaction at the surface with the estimated activation energy of 43.46 kJ·mol-1. The leaching mechanism was confirmed by characterizing vanadium trioxide and the dissolution residue using SEM-EDS analysis. Combined with thermodynamic calculation, the pressure leaching of vanadium trioxide in the temperature range (100 to 140 ℃) studied occurs as follows: V2O3 + O2 + H2SO4 = (VO2)2SO4 + H2O.

关键词： hydrometallurgy kinetics oxygen pressure acid leaching thermodynamics vanadium

A broadband metamaterial cylindrical lens antenna

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Chinese Science Bulletin 2010年第19期55卷 2066-2070页

作者： MA HuiFeng CHEN Xi YANG XinMi xu hongsheng CHENG Qiang CUI TieJun State Key laboratory of MiUimeter Waves School of lnformation Science and Engineering Southeast University Nanjing 210096 China

We present a Luneberg-like cylindrical lens antenna experimentally using *** cylindrical lens antenna with a broad bandwidth is made up of the non-resonant I-shaped metamaterial *** near-field distributions of the metamaterial lens antenna are measured using a two-dimensional near-field microwave scanning apparatus,and agree well with the simulation *** far-field radiation patterns of the antenna are also presented to show the high-gain performance in the broad bandwidth.

关键词：透镜天线圆柱材料宽带介质结构带宽性能二维近场近场分布

Asymmetric Synthesis of Dihydrospirotryprostatin B via a Silica Gel-Mediated Cyclization of Tryptamine-Ynamide

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Chinese Journal of Chemistry 2024年第12期42卷 1355-1359页

作者： Changhong Han Lu Yang Kaizong Yao Sen Zhang Jiayue Fu Hanyang Sun hongsheng xu Bin Lin Maosheng Cheng Yongxiang Liu Key Laboratory of Structure:Based Drug Design and Discovery of Ministry of Education Shenyang Pharmaceutical UniversityShenyangLiaoning 110016China Wuya College of Innovation Shenyang Pharmaceutical UniversityShenyangLiaoning 110016China Institute of Drug Research in Medicine Capital of China BenxiLiaoning 117000China Zhejiang Shapuaisi Pharmaceutical Co. LtdPinghuZhejiang 314299China

Comprehensive Summary An asymmetric synthesis of dihydrospirotryprostatin B was achieved in 15 steps(8 purifications)from *** main feature of our synthetic strategy is the efficient construction of spirocyclic oxindole intermediate containing a chiral quaternary carbon center,involving the silica gel-mediated cyclization of tryptamine-ynamide and oxidation under neat conditions.

关键词： Asymmetric synthesis Alkaloids Dihydrospirotryprostatin B Tryptamine-ynamide Cross-coupling Silica gel-mediated cyclization Oxidation

A Scene Detection Based Scheme for Supporting VCR Functions

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通讯和计算机（中英文版） 2011年第11期8卷 964-970页

作者： Jun Li Shubin xu hongsheng Xi Department of Automation University of Science and Technology of China Hefei 210003 China

Curriculums Reform of E-commerce and Advanced Language Program Design Based on Heuristic CDIO model

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Curriculums Reform of E-commerce and Advanced Language Progr...

Design and Implementation of an ASON Management System

2013教育技术与信息系统国际会议

作者： hongsheng xu Ruiling Zhang College of Information Technology Luoyang Normal University

Heuristic teaching is to use a variety of teaching methods, and fully mobilize the students’ motivation to learn, the enthusiasm a teaching type. The purpose of CDIO model is to build a set of curriculum system to train students to conceive, design, implementation, and operation of engineering systems, mainly students of complex system application ability, teamwork skills, the ability to control the complete life cycle of the project. The paper proposes the application of Heuristic CDIO model in E-commerce and advanced language program design curriculum reform. The practice of the method shows that the method has achieved good teaching results.

关键词： Heuristic teaching CDIO E-commerce curriculum reform

来源： cnki会议评论

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光学学报 2003年第S1期23卷 693-694页

作者： xuan Gui, Yunbin xu, hongsheng Song, Jie Zhang, Wanyi Gu Telecommunication Engineering School, Beijing University of Posts and Telecommunications, P. R. China Telecommunication Engineering School Beijing University of Posts and Telecommunications P. R. China

According to current management requirements, an ASON management information model and system architecture using CORBA and Java are proposed. A test platform is implemented to demonstrate multi-domain, connection and ... 详细信息

关键词： ASON on for in Design and Implementation of an ASON Management System of

Trophic Importance of Kelp-derived Particulate Materials to Scallop Chlamys farreri in a Polycuiture Farm in Sanggou Bay(Weihai,China)

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Trophic Importance of Kelp-derived Particulate Materials to ...