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Price-Based Residential Demand Response Management in Smart Grids:A Reinforcement learning-Based Approach

IEEE/CAA Journal of Automatica Sinica 2022年第1期9卷 123-134页

作者： Yanni Wan Jiahu Qin Xinghuo yu Tao Yang yu Kang Department of Automation University of Science and Technology of ChinaHefei 230027China Institute of Artificial Intelligence Hefei Comprehensive National Science CenterHefei 230088China School of Engineering RMIT UniversityVIC 3000Australia State Key Laboratory of Synthetical Automation for Process Industries Northeastern UniversityShenyang 110819China Department of Automation State Key Laboratory of Fire ScienceInstitute of Advanced TechnologyUniversity of Science and Technology of ChinaHefei 230027China Key Laboratory of Technology in Geo-Spatial Information Processing and Application Systems Chinese Academy of SciencesBeijing 100190China

This paper studies price-based residential demand response management(PB-RDRM)in smart grids,in which non-dispatchable and dispatchable loads(including general loads and plug-in electric vehicles(PEVs))are both *** PB-RDRM is composed of a bi-level optimization problem,in which the upper-level dynamic retail pricing problem aims to maximize the profit of a utility company(UC)by selecting optimal retail prices(RPs),while the lower-level demand response(DR)problem expects to minimize the comprehensive cost of loads by coordinating their energy consumption *** challenges here are mainly two-fold:1)the uncertainty of energy consumption and RPs;2)the flexible PEVs’temporally coupled constraints,which make it impossible to directly develop a model-based optimization algorithm to solve the *** address these challenges,we first model the dynamic retail pricing problem as a Markovian decision process(MDP),and then employ a model-free reinforcement learning(RL)algorithm to learn the optimal dynamic RPs of UC according to the loads’*** proposed RL-based DR algorithm is benchmarked against two model-based optimization approaches(i.e.,distributed dual decomposition-based(DDB)method and distributed primal-dual interior(PDI)-based method),which require exact load and electricity price *** comparison results show that,compared with the benchmark solutions,our proposed algorithm can not only adaptively decide the RPs through on-line learning processes,but also achieve larger social welfare within an unknown electricity market environment.

关键词： Demand response management(DRM) Markovian decision process(MDP) Monte Carlo simulation reinforcement learning(RL) smart grid

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Ignition processes and characteristics of charring conductive polymers with a cavity geometry in precombustion chamber for applications in micro/nano satellite hybrid rocket motors

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Defence Technology（防务技术） 2024年第2期32卷 55-66页

作者： Zhiyuan Zhang Hanyu Deng Wenhe Liao Bin yu Zai yu Nanjing University of Science and Technology Nanjing 210094China

The arc ignition system based on charring polymers has advantages of simple structure,low ignition power consumption and multiple ignitions,which bringing it broadly application prospect in hybrid propulsion system of micro/nano ***,charring polymers alone need a relatively high input voltage to achieve pyrolysis and ignition,which increases the burden and cost of the power system of micro/nano satellite in practical *** conductive substance into charring polymers can effectively decrease the conducting voltage which can realize low voltage and low power consumption repeated ignition of arc ignition *** this paper,a charring conductive polymer ignition grain with a cavity geometry in precombustion chamber,which is composed of PLA and multiwall carbon nanotubes(MWCNT)was *** detailed ignition processes were analyzed and two different ignition mechanisms in the cavity of charring conductive polymers were *** ignition characteristics of charring conductive polymers were also investigated at different input voltages,ignition grain structures,ignition locations and injection schemes in a visual ignition *** results demonstrated that the ignition delay and external energy required for ignition were inversely correlated with the voltages applied to ignition ***,the incremental depth of cavity shortened the ignition delay and external energy required for ignition while accelerated the propagation of *** the depth of cavity increased from 2 to 6 mm(at 50 V),the time of flame propagating out of ignition grain changed from 235.6 to 108 ms,and values of mean ignition delay time and mean external energy required for ignition decreased from 462.8 to 320 ms and 16.2 to 10.75 J,*** rear side of the cavity was the ideal ignition position which had a shorter ignition delay and a faster flame propagation speed in comparison to other ignition *** to direct injection scheme,swirlin

关键词： Micro/nano satellite hybrid propulsion Arc ignition Charring conductive polymer Ignition mechanism Ignition characteristic Repeated ignition

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Commuting Dual Toeplitz Operators on the Harmonic Dirichlet Space

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Acta Mathematica Sinica,English Series 2016年第9期32卷 1099-1105页

作者： Jing yu YANG Yin Yin HU yu Feng LU Tao yu School of Mathematical Statistics Chifeng University Chifeng 024000 P. R. China School of Mathematical Sciences Dalian University of Technology Dalian 116024 P. R. China

In this paper, we characterize the symbols for （semi-）commuting dual Toeplitz operators on the orthogonal complement of the harmonic Dirichlet space. We show that for φ ,ψ ∈ W1, ∞, SφSψ = SψSφ on （Dh）⊥ if and only if φ and ψ satisfy one of the following conditions：（1） Both φ and ψ are harmonic functions; （2） There exist complex constants α and β, not both O, such that φ = αφ＋β.

关键词： Dual Toeplitz operator harmonic Dirichlet space commutativity

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Synthesis and Properties of Cerium Oxide Nanometer Powders by Pyrolysis of Amorphous Citrate

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Journal of Materials Science & Technology 1997年第2期13卷 113-116页

作者： Dong, XT Hong, GY yu, DC yu, DS CHINESE ACAD SCI CHANGCHUN INST APPL CHEMCHANGCHUN 130022PEOPLES R CHINA

CeO2 nanometer powders of different sizes were prepared at low temperature by pyrolysis of amorphous citrate. XRD patterns show that CeO2 is cubic in structure, space group O-h(5)-F-M3M. TEM indicates that the prepared CeO2 is spherical in shape, and the particle size distribution is in narrow range. It was found that calcination temperature is a more important factor affecting the crystallite size of CeO2 than calcining time, the smaller the particle, the bigger the crystal lattice distortion, the worse the crystal growth. Solubility test of CeO2 in nitric acid reveals that the surface activity of CeO2 decreases with the increasing particle sizes. IR spectra analysis shows that the absorption of Ce-O bond is shifted to higher energy with the decrease of CeO2 particle sizes.

关键词： Cerium compounds

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Hetero-phase MoC-Mo_(2)C nanoparticles for enhanced photocatalytic H_(2)-production activity of TiO_(2)

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Nano Research 2021年第4期14卷 1095-1102页

作者： Jinfeng Liu Ping Wang Jiajie Fan Huogen yu Jiaguo yu School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China School of Chemistry Chemical Engineering and Life SciencesWuhan University of TechnologyWuhan 430070China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450002China State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Hexagonal molybdenum carbide(Mo_(2)C)as an effective non-noble cocatalyst is intensively researched in the photocatalytic H_(2)-evolution field owing to its Pt-like H^(+)-adsorption ability and good ***,hexagonal Mo_(2)C-modified photocatalysts possess a limited H_(2)-evolution rate because of the weak H-desorption *** improve the activity,cubic MoC was introduced into Mo_(2)C toform the carbon-modified MoC-Mo_(2)C nanoparticles(MoC-Mo_(2)C@C)by a calcination *** resultant MoC-Mo_(2)C@C(ca.5 nm)was eventually coupled with Ti0_(2)to acquire high-efficiency Ti0_(2)/MoC-Mo_(2)C@C by electrostatic *** highest H_(2)-generation rate of Ti0_(2)/MoC-Mo_(2)C@C reached of 918μmol·h^(-1)·g^(-1)which was 91.8,2.7,and 1.5 times than that of the Ti0_(2),TiO_(2)/MoC@C,and Ti0_(2)/Mo_(2)C@C,*** enhanced rate of Ti0_(2)attributes to the carbon layer as cocatalyst to transmit electrons and the hetero-phase MoC-Mo_(2)C as H_(2)-generation active sites to boost H_(2)-evolution *** research offers a novel insight to design photocatalytic materials for energy applications.

关键词： TiO_(2) MoC-MO_(2)C@C cocatalyst H_(2)evolution photocatalysis

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Blue band nonlinear optics and photodarkening in silica microdevices

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Photonics Research 2022年第9期10卷 2073-2080页

作者： KE TIAN JIBO yu FUCHUAN leI JONATHAN WARD ANGZHEN LI PENGFEI WANG SÍle NIC CHORMAIC Okinawa Institute of Science and Technology Graduate University OnnaOkinawa 904-0495Japan Key Laboratory of In-Fiber Integrated Optics of Ministry of Education College of Physics and Optoelectronic EngineeringHarbin Engineering UniversityHarbin 150001China Department of Microtechnology and Nanoscience Chalmers University of TechnologySE-41296 GothenburgSweden Physics Department University College CorkCorkIreland Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China

There are extensive studies to date on optical nonlinearities in microcavities at the near and mid-IR *** this research into the visible region is equally ***,we demonstrate a directly pumped,blue band Kerr frequency comb and stimulated Raman scattering(SRS)at 462 nm in a silica nanofiber-coupled whispering gallery microcavity ***,due to the high optical intensities achieved,photodarkening is unavoidable and can quickly degrade the optical quality of both the coupling optical nanofiber and the microcavity,even at very low pump ***,stable hyperparametric oscillation and SRS are demonstrated in the presence of photodarkening by taking advantage of in-situ thermal *** work highlights the challenges of silica-based,short wavelength nonlinear optics in high-quality,small mode volume devices and gives an effective method to overcome this apparent limitation,thus providing a baseline for optics research in the blue region for any optical devices fabricated from silica.

关键词： pumped pump scattering

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无模型SISO时滞系统的PID参数稳定域研究

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控制理论与应用 2009年第4期26卷 443-445页

作者：林示麟欧林林俞立浙江工业大学信息工程学院浙江杭州310032

针对无精确模型的单输入单输出(SISO)时滞系统,利用频率响应数据,给出确定PID参数稳定域的解析方法.首先通过继电反馈频域辨识法得到系统的频率响应数据,然后基于该数据确定控制参数的奇异边界线和非奇异边界线,并判断边界线的哪一侧具... 详细信息

针对无精确模型的单输入单输出(SISO)时滞系统,利用频率响应数据,给出确定PID参数稳定域的解析方法.首先通过继电反馈频域辨识法得到系统的频率响应数据,然后基于该数据确定控制参数的奇异边界线和非奇异边界线,并判断边界线的哪一侧具有更少的不稳定极点,从而给出能使闭环系统稳定的控制参数区域.该方法避免了模型辨识的复杂计算过程,为无模型SISO时滞系统的PID控制器设计和调节提供了一条简单有效的途径.仿真结果验证了方法的有效性。

关键词：单输入单输出系统时滞频率响应 PID参数稳定域

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Synthesis and Antioxidant Properties of Novel Silybin Analogues

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Chinese Chemical letters 2006年第4期17卷 465-468页

作者： Jing Xu GONG lin Jia WENG Feng WANG yu Bin FENG Chang Xin ZHOU Hai Bo LI Yi Hang WU Xiao Jiang HAO Xiu Mei WU Hua BAI Joachim STOECKIGT yu ZHAO Department of Traditional Chinese Medicine and Natural Drug Research College of Pharmaceutical Sciences Zhejiang University Hangzhou 310031 The Key Laboratory of Chemistry of Natural Products of Guizhou Province Chinese Academy of Sciences Guiyang 550022 Zhejiang Hisun Naturelite Pharmaceutical R＆D Co. Ltd. Hangzhou 310007 lehrstuhl für Pharmazeutische Biologie Institut für Pharmazie Johannes-Gutenberg Universitaet Mainz D-55099 Mainz Germany

Eight novel silybin analogues （7a-h） were synthesized and their antioxidant properties including the capability of scavenging superoxide anion free radicals and the inhibitory effect on DPPH free radicals were dete... 详细信息

关键词： Silybin analogues synthesis antioxidant DPPH inhibition superoxide anion free radical scavenging.

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Role of the gut microbiota in anticancer therapy:from molecular mechanisms to clinical applications

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Signal Transduction and Targeted Therapy 2023年第6期8卷 2687-2713页

作者： lin-Yong Zhao Jia-Xin Mei Gang yu lei lei Wei-Han Zhang Kai Liu Xiao-Long Chen Damian Kołat Kun Yang Jian-Kun Hu Department of General Surgery&Laboratory of Gastric Cancer State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy and Cancer CenterWest China HospitalSichuan UniversityChengduChina Gastric Cancer Center West China HospitalSichuan UniversityChengduChina State Key Laboratory of Oral Diseases West China Hospital of StomatologySichuan UniversityFrontier Innovation Center for Dental Medicine PlusSichuan UniversityChengduChina Department of Experimental Surgery Medical University of LodzLodzPoland

In the past period,due to the rapid development of next-generation sequencing technology,accumulating evidence has clarified the complex role of the human microbiota in the development of cancer and the therapeutic *** importantly,available evidence seems to indicate that modulating the composition of the gut microbiota to improve the efficacy of anti-cancer drugs may be ***,intricate complexities exist,and a deep and comprehensive understanding of how the human microbiota interacts with cancer is critical to realize its full potential in cancer *** purpose of this review is to summarize the initial clues on molecular mechanisms regarding the mutual effects between the gut microbiota and cancer development,and to highlight the relationship between gut microbes and the efficacy of immunotherapy,chemotherapy,radiation therapy and cancer surgery,which may provide insights into the formulation of individualized therapeutic strategies for cancer *** addition,the current and emerging microbial interventions for cancer therapy as well as their clinical applications are *** many challenges remain for now,the great importance and full potential of the gut microbiota cannot be overstated for the development of individualized anti-cancer strategies,and it is necessary to explore a holistic approach that incorporates microbial modulation therapy in cancer.

关键词： clinical mechanisms stated

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A Fiber Optic Sensor for the Simultaneous Measurement of Dual-parameter Based on Hydrogel-immobilized Enzyme Complex

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Journal of Wuhan University of Technology(Materials Science) 2023年第6期38卷 1311-1318页

作者： TONG Yilin ZHANG yu HAN Xuecai yu Kan BAO Jiaqi Faculty of Information Science and Technology Wenhua CollegeWuhan 430074China Hubei Institute of Measurement and Testing Technology Wuhan 430223China

A novel fiber optic sensor based on hydrogel-immobilized enzyme complex was developed for the simultaneous measurement of dual-parameter,the leap from a single parameter detecting fiber optic sensor to a fiber optic sensor that can continuously detect two kinds of parameters was *** controlling the temperature from high to low,the function of fiber sulfide sensor and fiber DCP sensor can be realized,so as to realize the continuous detection of *** different variables affecting the sensor performance were evaluated and *** the optimal conditions,the response curves,linear detection ranges,detection limits and response times of the dual-parameter sensor for testing sulfide and DCP were obtained,*** sensor displays high selectivity,good repeatability and stability,which have good potentials in analyzing sulfide and DCP concentration of practical water samples.

关键词： hydrogel-immobilized enzyme complex dual-parameter simultaneous measurement fiber optic sensor

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