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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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Tunable bound states in the continuum with high Q factors

Tunable bound states in the continuum with high Q factors

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CLEO: QELS_Fundamental Science, QELS 2022

作者： Hu, Guiying Li, Zhixin Yang, Shuixian Xia, Di Wu, Jiayue Huang, Jianteng Zhang, Bin Xu, Yi Li, Zhaohui Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and Systems School of Electrical and Information Technology Sun Yat-sen University Guangzhou510275 China Key Laboratory of Optoelectronic Materials and Technologies Sun Yat-sen University Guangzhou510275 China Zhuhai519000 China Guangdong Provincial Key Laboratory of Information Photonics Technology Advanced Institute of Photonics Technology School of Information Engineering Guangdong University of Technology Guangzhou510006 China

We realized a chalcogenide glass (ChG) photonic crystal supporting bound states in the continuum (BIC) with a Q-factor of ca. 105. With large photosensitivity of ChG, a non-volatile and high precision resonant-wavelen... 详细信息

ISBN: (纸本)9781557528209

关键词： Q factor measurement

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Size Does Matter in Computer Collaboration: Heterogeneous Platform Effects on Human-Human Interaction

Size Does Matter in Computer Collaboration: Heterogeneous Pl...

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Annual Hawaii International Conference on System Sciences (HICSS)

作者： Marilyn Mantei” Tremaine A. Sarcevic Dezhi Wu M.C. Velez B. Dorohonceanu A. Krebs I. Marsic Department of Information Systems New Jersey Institute of Technology Newark NJ Center for Advanced Information Processing Rutgers The State University Piscataway NJ USA Department of Information Systems New Jersey Institute of Technology Newark NJ USA Center for Advanced Information Processing Rutgers The State University Piscataway NJ

Because today's workforce is highly mobile, small wireless devices are being used to support mobile work collaboration. However, do computer platform differences affect such collaborations? This question is investigated through a controlled experiment that examines collaborative problem solving on different combinations of small and large computers. Experiment participants in the study work together on solving 2- and 3-dimensional variations of the popular Tetris™ game. Gender is used as a moderating variable to ascertain if prior observed effects on groups of males would be found among females. The findings indicate that platform differences affect communication and social behavior among both groups. Unexpectedly, collaboration amongst partners using small handhelds was the most cooperative and friendly because of the difficulty of solving the problem with the small device.

关键词： Collaboration Collaborative work Mobile communication Rail transportation Personal digital assistants information systems information processing Portable computers Mobile handsets Electronic mail

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Walker detection in outdoor scenes using spatial-temporal feature analysis of variation regions

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systems and Computers in Japan 2006年第7期37卷 37-46页

作者： Haga, Tetsuji Sumi, Kazuhiko Yagi, Yasushi Advanced Technology R and D Center Mitsubishi Electric Corp. Amagasaki 661-8661 Japan Graduate School of Informatics University of Kyoto Kyoto 606-8501 Japan Institute of Scientific and Industrial Research Osaka University Ibaraki 567-0047 Japan Mitsubishi Electric Corp. Industrial Systems Research Group Advanced Technology R and D Center Information Processing Society of Japan Information Science Research Group Graduate School University of Kyoto Department of Industrial Science Research IEEE Society of Instrument and Control Engineers of Japan Robotics Society of Japan

We propose an image processing algorithm to detect walkers in outdoor images containing movement in the background such as swaying trees or irregular reflections from water. Previously proposed methods to detect walkers focus on the fact that locally distributed movement is reinforced along a spatial and temporal path marked out by an object such as a human that moves at approximately a constant speed and in a straight line while other background movement tends to cancel itself out. However, false alarms can occur with methods that are based on the time-averaged strength of movement due to mistaken associations between moving objects and the fact that temporary movement in high-contrast areas can significantly raise the average value. In our method we use features based on a spatially averaged strength of movement and the uniformity of movement over time in addition to the time-averaged strength of movement, attempting to distinguish walkers from background movement within a feature space made up of these three features. In experiments with real images we have confirmed that the proposed method can reduce the rate of both false positives and false negatives compared to a method that focuses only on the time-averaged strength of movement. In addition, we have constructed an on-line system to implement the proposed method and the results of evaluation experiments conducted in a real-life environ ment over a period of two weeks show that we were able to obtain a level of performances in which the failure rate was less than 1 percent and false alarms occurred less than three times per day. © 2006 Wiley Periodicals. Inc.

关键词： Image processing

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Additive manufacturing of a Co-Cr-W alloy by selective laser melting:In-situ oxidation,precipitation and the corresponding strengthening effects

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Journal of Materials Science & technology 2022年第30期125卷 171-181页

作者： Kefeng Li Zhi Wang Kaikai Song Khashayar Khanlari Xu-Sheng Yang Qi Shi Xin Liu Xinhua Mao Institute of New Materials Guangdong Academy of SciencesGuangzhou 510650China National Engineering Research Center of Powder Metallurgy of Titanium and Rare Metals Guangzhou 510650China Guangdong Key Laboratory for Advanced Metallic Materials Processing South China University of TechnologyGuangzhou 510641China School of Mechanical Electrical and Information EngineeringShandong UniversityWeihai 264209China Advanced Manufacturing Technology Research Center Department of Industrial and Systems EngineeringThe Hong Kong Polytechnic UniversityHung HomKowloonHong KongChina Hong Kong Polytechnic University Shenzhen Research Institute Shenzhen 518000China

Additive manufacturing exhibits great potentials for the fabrication of novel materials due to its unique non-equilibrium solidification and heating *** this work,a novel nano-oxides dispersion strengthened Co28 Cr9 W1.5 Si(wt.%)alloy,fabricated by laser powder bed fusion(LPBF),was comprehensively *** the layer-by-layer featured process,in-situ formation of Si rich,amorphous,nano-oxide inclusions was observed,whose formation is ascribed to the high affinity of Si to ***,distinctive body-centered cubic(BCC)Co5 Cr3 Si2 nano-precipitates with an 8-fold symmetry were also confirmed to *** precipitates,rarely reported in previous studied Co-Cr alloys,were found to tightly bond with the in-situ ***,the morphologies,the size distributions as well as the microstructure of the interface between the matrix and the inclusions were investigated in detail and their influence on the tensile deformation was also *** existence of transition boundaries between these inclusions and the matrix strongly blocked the movement of dislocations,thereby increasing the strength of the *** was understood that when the plastic deformation proceeds,the fracture occurs in the vicinity of the oxide inclusions where dislocations accumulate.A quantitative analysis of the strengthening mechanism was also established,in which an additional important contribution to strength(~169 MPa)caused by the effects of in-situ formed oxide inclusions was calculated.

关键词： Co-Cr-W-Si alloy Selective laser melting Oxide inclusion Precipitation Strengthening mechanisms

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Photo-assisted technologies for environmental remediation

Nature Reviews Clean Technology

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Nature Reviews Clean technology 2025年第3期1卷 1-15页

作者： Bo Weng Jiangquan Lv Ning Han Bao-Lian Su Maarten Roeffaers Johan Hofkens Yongfa Zhu Shaobin Wang Wonyong Choi State Key Laboratory of Advanced Environmental Technology Institute of Urban Environment Chinese Academy of Sciences Xiamen China University of Chinese Academy of Sciences Beijing China College of Electronics and Information Science Fujian Jiangxia University Fuzhou China Department of Electrical and Computer Engineering University of Toronto Toronto Canada Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan China cMACS Department of Microbial and Molecular Systems KU Leuven Leuven Belgium Department of Chemistry KU Leuven Leuven Belgium Department of Chemistry Tsinghua University Beijing China School of Chemical Engineering University of Adelaide Adelaide South Australia Australia Department of Energy Engineering Korea Institute of Energy Technology (KENTECH) Naju South Korea

Industrial processes can lead to air and water pollution, particularly from organic contaminants such as toluene and antibiotics, posing threats to human health. Photo-assisted chemical oxidation technologies leverage light energy to mineralize these contaminants. In this Review, we discuss the mechanisms and efficiencies of photo-assisted advanced oxidation processes for wastewater treatment and photothermal technologies for air purification. The integration of solar energy enhances degradation efficiency and reduces energy consumption, enabling more efficient remediation methods. We evaluate the technological aspects of photo-assisted technologies, such as photo-Fenton, photo-persulfate activation, photo-ozonation and photoelectrochemical oxidation, emphasizing their potential for practical applications. Finally, we discuss the challenges in scaling up photo-assisted technologies for specific environmental remediation needs. Photo-assisted technologies have demonstrated effectiveness in environmental remediation, although large-scale applications remain constrained by high costs. Future potential applications of photo-assisted technologies will require that technology selection be tailored to specific pollution scenarios and engineering processes optimized to minimize costs.

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An Enhanced Lenient Merging Scheme for H.264 Variable Block Size Selection

An Enhanced Lenient Merging Scheme for H.264 Variable Block ...

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International Conference on Advances in Multimedia, MMEDIA

作者： Ihab Amer Rana Hamed Wael Badawy Graham Jullien James W. Haslett DMET Department German University in Cairo Cairo Egypt Advanced Technology Information Processing Systems Calgary AB Canada

The H.264 video coding standard supports the usage of Variable Block Size (VBS) Motion Estimation/ Compensation and Mode Decision (ME/MD). This tool clearly enhances the rate-distortion (R-D) capabilities of the encoder. However, it dramatically increases its computational requirements. This paper represents an extension to a recently proposed scheme for efficient block size mode selection. The proposed scheme enhances the R-D performance of at the expense of minor computational overhead. A dynamic version of the proposed scheme that requires reconfiguration of the encoder according to the target bitrate is also introduced. The dynamic solution exhibits better RD-performance than the static counterparts throughout the wide range of target bitrates.

关键词： Merging Video coding Motion estimation Bit rate Automatic voltage control Degradation Standards development Switches Costs Proposals

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Efficient and secure elliptic curve point multiplication using double-base chains

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11th International Conference on the Theory and Application of Cryptology and information Security, ASIACRYPT 2005

作者： Dimitrov, Vassil Imbert, Laurent Mishra, Pradeep Kumar Advanced Technology Information Processing Systems Laboratory University of Calgary Canada Centre for Informations Security and Cryptography University of Calgary Canada Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier CNRS UMR 5506 Montpellier France

ISBN: (纸本)3540306846

In this paper, we propose a efficient and secure point multiplication algorithm, based on double-base chains. This is achieved by taking advantage of the sparseness and the ternary nature of the socalled double-base number system (DBNS). The speed-ups are the results of fewer point additions and improved formulae for point triplings and quadruplings in both even and odd characteristic. Our algorithms can be protected against simple and differential side-channel analysis by using side-channel atomicity and classical randomization techniques. Our numerical experiments show that our approach leads to speed-ups compared to windowing methods, even with window size equal to 4, and other SCA resistant algorithms. © International Association for Cryptologic Research 2005.

关键词： Algorithms

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Four-dimensional direct detection receiver enabling Jones-space field recovery with phase and polarization diversity

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Photonics Research 2024年第3期12卷 399-410页

作者： QI WU YIXIAO ZHU XUEYANG LI HEXUN JIANG CHEN CHENG MENGFAN FU YIKUN ZHANG QUNBI ZHUGE ZHAOHUI LI WEISHENG HU Peng Cheng Laboratory Shenzhen 518055China State Key Laboratory of Advanced Communication Systems and Networks Department of Electronic EngineeringShanghai Jiao Tong UniversityShanghai 200240China School of Electronics and Information Technology and Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and Systems Sun Yat-sen UniversityGuangzhou 510006China

Data centers,the engines of the global Internet,rely on powerful high-speed optical *** optical fiber communication,classic direct detection captures only the intensity of the optical field,while the coherent detection counterpart utilizes both phase and polarization diversities at the expense of requiring a narrow-linewidth and high-stability local oscillator(LO).Herein,we propose and demonstrate a four-dimensional Jones-space optical field recovery(4-D JSFR)scheme without an *** polarization-diverse full-field receiver structure captures information encoded in the intensity and phase of both polarizations,which can be subsequently extracted *** our knowledge,our proposed receiver achieves the highest electrical spectral efficiency among existing direct detection systems and potentially provides similar electrical spectral efficiency as standard intradyne coherent detection *** fully recovered optical field extends the transmission distance beyond the limitations imposed by fiber chromatic ***,the LO-free advantage makes 4-D JSFR suitable for photonic integration,offering a spectrally efficient and cost-effective solution for massively parallel data center *** results may contribute to the ongoing developments in the theory of optical field recovery and the potential design considerations for future high-speed optical transceivers.

关键词： polarization receiver phase

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Formulation of Optimization Problems with Radiation Field Phases as Design Variables for Pattern Synthesis of Linear Antenna Arrays

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China Communications 2022年第12期19卷 86-100页

作者： Fei Zhao Jun He Sanyou Zeng Changhe Li Qinghui Xu Zhigao Zeng School of Mechanical Engineering and Electronic Information China University of GeosciencesWuhan 430074China Science and Technology on Blind Signal Processing Laboratory Southwest Electronics and Telecommunication Technology Research InstituteChengdu 610041China School of Automation China University of GeosciencesWuhan 430074China Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Wuhan 430074China College of Computer Hunan University of TechnologyZhuzhou CityHunan Province412007China

Pattern synthesise of antenna arrays is usually complicated optimization problems,while evolutionary algorithms(EAs)are promising in solving these *** paper does not propose a new EA,but does construct a new form of optimization *** new optimization formulation has two differences from the common *** is the objective function is the field error between the desired and the designed,not the usual amplitude error between the desired and the *** difference is beneficial to decrease complexity in some *** second difference is that the design variables are changed as phases of desired radiation field within shaped-region,instead of excitation *** difference leads to the reduction of the number of design variables.A series of synthesis experiments including equally and unequally spaced linear arrays with different pattern shape requirements are applied,and the effectiveness and advantages of the proposed new optimization problems are *** results show that the proposing a new optimization formulation with less complexity is as significant as proposing a new algorithm.

关键词： pattern synthesis evolutionary algorithms linear antenna arrays

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