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Review of Mathematical Methodology for Electric Power Optimization Problems

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Journal of the Operations Research Society of China 2020年第2期8卷 295-309页

作者： Dong Han xiao-Jiao tong Department of Electrical Engineering University of Shanghai for Science and TechnologyShanghai 200093China School of Mathematics and Computational Science Hunan First Normal UniversityChangsha 410205China

Electric power system is a physical energy system consisting of power generation,substations,transmission,distribution,and *** objective of power system optimization is to improve power system security,economy,and *** paper summarizes the classical mathematical optimization methods and modeling techniques of power system optimization associated with system planning,operation,and *** with the development of electric power industry,the concept of Energy Internet is addressed,which consists of power network,gas network,and transportation *** such new environments,electric power optimization faces some challenging with respect to the cooperation of multi-energy *** to the design structure and operational characteristics of the Energy Internet,some research areas of electric power optimization are presented from the viewofmathematical optimization modeling and *** aim is to provide some optimization methodology to solve the optimal issues of power system under the background of Energy Internet.

关键词： Mathematical optimization Electric power system Energy Internet Modeling and algorithm

Solvothermal Route to Prepare the Metastable Phase 3c-Fe_7S_8 with Hexagonal Platelet Morphology

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Chinese Chemical Letters 2003年第1期14卷 83-86页

作者： Xian Yun XU xiao guang LI DepartmentofMatcrialsScienceandEngineering.UniversityofScienceandTechnologyofChina Hefei230026 DepartmentofMatcrialsScienceandEngineering.UniversityofScienceandTechnologyofChina

The metastable phase 3c-Fe7S8 with the hexagonal platelet morphology has been prepared by using solvothermal route. The product was characterized by means of X-ray powder diffraction (XRD) and transmission electron microscopy (TEM) and X-ray photoelectron spectra (XPS). The experiment results show that the as-prepared Fe7S8 is a metastable phase with the hexagonal platelet morphology.

关键词： c-Fe_7S_8 solvothermal route hexagonal platelet.

Quantum Dynamics of Bound Entangled States

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Communications in Theoretical Physics 2008年第2期49卷 343-346页

作者： ZHU Guo-Qiang WANG xiao-guang Zhejiang Institute of Modern Physics Zhejiang University Hangzhou 310027 China Department of Physics and Institute of Theoretical Physics The Chinese University of Hong Kong Hong Kong China

By using the partial transpose and realignment method, we study the time evolution of the bound entanglement under the bilinear-biquadratie Hamiltonian. For the initial Horodecki＇s bound entangled state, it keeps bound entangled for some time, while for the initial bound entangled states constructed from the unextendable product basis, they become free once the time evolution begins. The time evolution provides a new way to construct bound entangled states, and also gives a method to free bound entanglement.

关键词： entanglement quantum dynamics

Preparing Nano-ZnS by Solid State Reaction at Room Temperature

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Chinese Chemical Letters 2001年第2期12卷 187-188页

作者： xiao Lin SUN guang Yan HONG Laboratory of Rare Earth Chemistry and Physics Changchun Institute of Applied ChemistryChangchun 130022

ZnS nanoparticles were prepared by using solid-state reaction method at room temperature in agate mortar for the first time. The average particle size was about 20nm. This reaction is affected by the structure of reac... 详细信息

关键词： Zn nanoparticle solid-state reaction room temperature

Effect of Failure Mode of Taut Mooring System on the Dynamic Response of A Semi-Submersible Platform

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China Ocean Engineering 2021年第6期35卷 841-851页

作者： WANG Teng HAO jun-jie WU xiao-ni LI Ye WANG xiao-tong Department of Naval Architecture and Offshore Engineering China University of Petroleum(East China)Qingdao 266580China Shanghai Key Laboratory for Digital Maintenance of Buildings and Infrastructure Department of Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Ocean Engineering School of Naval ArchitectureOcean and Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China China National Oil and Gas Exploration and Development Co. Ltd.Beijing 100034China

Mooring system failure can lead to largely different dynamic response of floating structures when compared to the response under the condition of intact mooring *** a semi-submersible platform with taut mooring system under extreme environmental conditions,the typical mooring system failure includes anchor line breaking failure due to the broken anchor line,and the anchor dragging failure caused by the anchor failure in the seabed soil due to the shortage of the anchor bearing ***,study on the mooring failure caused by anchor failure is *** current work investigates the effect of three failure modes of taut mooring system on dynamic response of a semi-submersible platform,including one line breaking failure,two lines breaking failure,and one line breaking with one line attached anchor dragging *** nonlinear polynomial mooring line model in AQWA was used with integrating the load and displacement curve from the anchor pulling study to characterize the anchor dragging behavior for mooring system failure caused by the anchor *** offsets of the platform and the tension of mooring lines were analyzed for mooring system failure with 100-year return *** is found that the mooring failure of one line breaking with one line attached anchor dragging is a case between the other two mooring *** traditional mooring analysis considering only the damaged condition with one line breaking is not safe *** the simple way of mooring analysis of two lines breaking is too conservative for the costly offshore engineering.

关键词： taut mooring system failure semi-submersible platform dynamic response anchor dragging line breaking

A novel block encryption scheme based on chaos and an S-box for wireless sensor networks

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Chinese Physics B 2012年第2期21卷 163-174页

作者： tong xiao-Jun Wang Zhu Zuo Ke School of Computer Science and Technology Harbin Institute of TechnologyWeihai 264209China School of Information Technology and Engineering Harbin Institute of TechnologyWeihai 264209China

The wireless sensor network （WSN） has been widely used in various fields, but it still remains in the preliminary discovery and research phase with a lack of various related mature technologies. Traditional encryption schemes are not suitable for wireless sensor networks due to intrinsic features of the nodes such as low energy, limited computation capability, and lack of storage resources. In this paper, we present a novel block encryption scheme based on the integer discretization of a chaotic map, the Feistel network structure, and an S-box. The novel scheme is fast, secure, has low resource consumption and is suitable for wireless sensor network node encryption schemes. The experimental tests are carried out with detailed analysis, showing that the novel block algorithm has a large key space, very good diffusion and disruptive performances, a strict avalanche effect, excellent statistical balance, and fast encryption speed. These features enable the encryption scheme to pass the SP800-22 test. Meanwhile, the analysis and the testing of speed, time, and storage space on the simulator platform show that this new encryption scheme is well able to hide data information in wireless sensor networks.

关键词： wireless sensor networks chaos encryption discretization of chaotic equations S-box

Hydraulic metal structure health diagnosis based on data mining technology

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Water Science and Engineering 2015年第2期8卷 158-163页

作者： guang-ming Yang xiao Feng Kun Yang College of Energy and Electrical Engineering Hohai University Research Center for Renewable Energy Generation Engineering Ministry of Education Hohai University Dayu College Hohai University

In conjunction with association rules for data mining, the connections between testing indices and strong and weak association rules were determined, and new derivative rules were obtained by further reasoning. Association rules were used to analyze correlation and check consistency between indices. This study shows that the judgment obtained by weak association rules or non-association rules is more accurate and more credible than that obtained by strong association rules. When the testing grades of two indices in the weak association rules are inconsistent, the testing grades of indices are more likely to be erroneous, and the mistakes are often caused by human factors. Clustering data mining technology was used to analyze the reliability of a diagnosis, or to perform health diagnosis directly. Analysis showed that the clustering results are related to the indices selected, and that if the indices selected are more significant, the characteristics of clustering results are also more significant, and the analysis or diagnosis is more credible. The indices and diagnosis analysis function produced by this study provide a necessary theoretical foundation and new ideas for the development of hydraulic metal structure health diagnosis technology.

关键词： Hydraulic metal structure Health diagnosis Data mining technology Clustering model Association rule

Application of neutrosophic minimum spanning tree in electrical power distribution network

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CAAI Transactions on Intelligence Technology 2020年第2期5卷 99-105页

作者： xiao Qun Liao tong Su Li Ma Information&Network Center Xi’an University of Science and TechnologyXi’anShaanxi 710054People’s Republic of China

The problem of finding the minimum spanning tree(MST)is one of the most studied and important combinatorial optimisation problems in graph *** types of uncertainties exist in real-life problems,which make it very hard to find the exact length of the *** neutrosophic set is an efficient tool to model and deal with the uncertainties in information due to inconsistent and *** this study,the authors use triangular neutrosophic numbers to represent the edge weights of a neutrosophic graph for the MST problem in the neutrosophic *** call this problem a neutrosophic MST(NMST)*** formulate the NMST problem in terms of the linear programming ***,they introduce an algorithmic method based on a genetic algorithm for solving the NMST *** present the utility of triangular neutrosophic numbers as edge weights and their application in the electrical distribution network.

关键词： theory. spanning weights

Autonomic discovery of subgoals in hierarchical reinforcement learning

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The Journal of China Universities of Posts and Telecommunications 2014年第5期21卷 94-104页

作者： xiao Ding LI Yi-tong SHI Chuan School of Computer Science Beijing University of Posts and Telecommunications

Option is a promising method to discover the hierarchical structure in reinforcement learning （RL） for learning acceleration. The key to option discovery is about how an agent can find useful subgoals autonomically among the passing trails. By analyzing the agent＇s actions in the trails, useful heuristics can be found. Not only does the agent pass subgoals more frequently, but also its effective actions are restricted in subgoals. As a consequence, the subgoals can be deemed as the most matching action-restricted states in the paths. In the grid-world environment, the concept of the unique-direction value reflecting the action-restricted property was introduced to find the most matching action-restricted states. The unique-direction-value （UDV） approach is chosen to form options offline and online autonomically. Experiments show that the approach can find subgoals correctly. Thus the Q-learning with options found on both offline and online process can accelerate learning significantly.

关键词： hierarchical reinforcement learning option Q-learning subgoal UDV