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Earthquake engineering and engineering Vibration 2009年第1期8卷 95-101页

作者： li Ping tao Xiaxin School of Civil engineering Harbin Institute of Technology Harbin 150090 China Institute of engineering Mechanics China Earthquake Administration Harbin 150080 China

This paper presents a method to integrate remote sensing （RS） data processing, generation of isoseismal lines and human-computer interaction modules into an improved GIS-based disaster reduction system. Using the RS data processing module, a statistical sample gray value and the RS-intensity at each field survey point in the region are calculated from the probabilistic relationship between the RS-variable and earthquake intensity, and stored in the GIS-based system database. Then, isoseismal lines are generated by a trend surface model from RS-intensity. They are further improved via modification of the isoseismal lines based on the empirical attenuation relationship calculated by using the RS-variable in the human-computer interaction module. The field survey shows that the proposed method gives a good generation of isoseismic lines. As a result, the accuracy of the damage and loss evaluation and the efficiency of the emergency decision making capability are improved.

关键词： GIS image processing RS-variable isoseismal lines trend surface CoKriging

Achievable Secrecy Rate Region of Two-Way Communication with Secret Key Feedback

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Tsinghua Science and Technology 2018年第2期23卷 126-134页

作者： tao li Shidong Zhou Department of Electronic engineering State Key Laboratory on Microwave and Digital Communications and National Laboratory for Information Science and Technology Tsinghua University Beijing100084 China. Department of Electronic engineering and State Key Laboratory oil Microwave and Digital Communications Tsinghua University Beijing 100084 China.

This paper investigates the achievable secrecy rate region of the Gaussian two-way wiretap channel,which describes the simultaneous secure two-way transmission of a confidential message. Through adjusting the time-sharing factor and the rate at which the random secret key is fed back, the allocation and optimization for the secrecy rates of two-way communication are achieved. Under peak and average power constraints, the achievable secrecy rate regions of the two-way communication are derived respectively.

关键词： physical layer security two-way communication feed back one-time-pad random secret key secrecy rate region

Algorithm Design and Application of Laminar Cooling Feedback Control in Hot Strip Mill

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Journal of Iron and Steel Research International 2012年第4期19卷 39-42页

作者： liU en-yang ZHANG Dian-hua SUN Jie PenG liang-gui GAO Bai-hong SU li-tao State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110819 LiaoningChina Shenyang Machine Tool Co Ltd Shenyang 110004 Liaoning China Sales Company ofShougang Group Beijing 100043 China

Feedback control is one of the most important ways to improve coiling temperature control precision during laminar cooling *** cooling equipments of a hot strip mill and structure of the control system were *** control algorithm based on PI controller and that based on Smith predictor were designed and tested in a hot strip mill *** application shows that the feedback control system based on PI controller plays a limited role in improving coiling temperature control *** feedback control system based on Smith predictor runs stable and *** the measured coiling temperature deviates from the target value,it can be adjusted to the required range quickly and steadily by Smith predictor feedback control,which improves the coiling temperature control precision greatly,and qualities of hot rolled strips are improved significantly

关键词： hot strip mill laminar cooling feedback control Smith predictor PI controller

Degradation of organics using LaFeO_(3)as a persulfate activator under low-intensity ultra-violet-light irradiation:Catalytic performance and mechanism

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Journal of Rare Earths 2022年第7期40卷 1043-1052页

作者： Yumei li Jian Fan Xiaonan Feng tao tao School of environment Huazhong University of Science and TechnologyWuhan 430074China School of energy and environment Inner Mongolia University of Science and TechnologyBaotou 014010China

ABO_(3)-type perovskite oxides with abounding defect structures and diverse physical chemistry attributes have been extensively studied in heterogeneous *** LaFeO_(3)perovskites fabricated via the sol-gel method were used as peroxydisulfate(PDS)activators for methylene blue(MB)degradation under low-intensity ultra-violet(UV)-light to evaluate the degradation efficiency of organic pollutants and *** results indicate that under low-intensity UV irradiation,the developed UV/LaFeO_(3)/PDS system shows excellent degradation ability of organic pollutants in a wide pH *** spin resonance and radical quenching experiments verify that SO_(4)^(·-),·OH,h^(+)and ^(1)O_(2)are generated during the activation process,and ^(1)O_(2)plays a dominant role in MB *** of low oxidation state Fe(Ⅱ)and O_(2)^(2-)/O^(-)on the LaFeO_(3)surface shows that oxygen vacancy,as the electron transfer mediator,enhances the redox cycle efficiency of Fe(Ⅱ)/Fe(Ⅲ).Photogenerated electrons of LaFeO_(3)involved in the cyclic transformation of Fe(Ⅱ)/Fe(Ⅲ)and PDS activation further increase the number of active radicals and thus promote the synergistic effect of photocatalytic coupled with sulfate radicalbased advanced oxidation processes.

关键词： LaFeO_(3) Peroxydisulfate Singlet oxygen Low-intensity UV-light Rare earths

Comparative Analysis of Hina Gene Sequences in Wild (Hordeum spontaneum) and Cultivated (H. vulgare) Barleys

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Agricultural Sciences in China 2011年第9期10卷 1313-1322页

作者： li Wei-tao JIANG Qian-tao CHen Guo-yue PU Zhi-en liU Ya-xi WANG Ji-rui ZHenG You-liang WEI Yu-ming Triticeae Research Institute Sichuan Agricultural University Wenjiang 611130 P.R.China Key Laboratory of Southwestern Crop Germplasm Utilization Ministry of Agriculture/College of Agriculture Sichuan Agricultural University Ya＇an 625014 P.R.China

The Hina gene is one of the two known Hin genes for hardness, and its RNA expression is correlated with grain hardness and dry matter digestibility variation. In this study, only one clone ofHina gene was obtained from one barley accession. A total of 121 Hina gene sequences were isolated from 121 wild barley （Hordeum spontaneum） accessions in Israel, Iran, and Turkey, and then their molecular characteristics were compared with 97 Hina gene sequences from 74 cultivated barley （H. vulgare） lines in Europe and 23 landrace （H. vulgare） with global distribution and other 26 Hina gene sequences from cultivated barleys （H. vulgare） with unknown global distribution. Cis-acting regulatory element （CARE） searching revealed that there were different types of regulatory element for the Hina gene in wild and landrace/cultivated barleys. There were six consistent cis-acting binding sites in wild and landrace/cultivated barleys, whereas 8 to 16 inconsistent TATA-boxes were observed. In addition, three special elements （E2Fb, Spl, and boxS） were only observed in wild barley, while one （AT1-motif） was only found in landrace/cultivated barley. Forty-four deduced amino acid sequences of HINA from wild and landrace/cultivated barleys were obtained by deleting repetitive amino acid sequences, and they were clustered into two groups on the basis of Neighbor-Joining analysis. However, there was no obvious difference in the amino acid sequences of HINA between wild and landrace/cultivated barleys. Comparing to protein secondary structure of wheat PINA, it was indicated that HINA also existed a signal peptide. In addition, HINA was a hydrophilic protein on the basis of the protein properties and composition.

关键词： Hina secondary structure regulatory element grain hardness barley

Radar high resolution range profile recognition via multi-SV method

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Journal of Systems engineering and Electronics 2017年第5期28卷 879-889页

作者： Long li Zheng liu tao li National Laboratory of Radar Signal Processing Xidian University

For radar high resolution range profile (HRRP) recognition, three aspects are of great importance to improve the performance, i.e. discrimination for outlier, classification for inner and an accurate description for feature space. To tackle these issues, a novel target recognition method is designed, denoted by the multiple support vectors (multi-SV) method. With the proposed method, a special framework is constructed by a treble correlate support vector model to segment the feature space to two regions with the distribution of density, and then the description and classification hyperplane for each region are achieved. Based on the support vector framework, this method needs less memory and computation complexity to fit practical radar HRRP recognition. Finally, the experiment based on the measured data verifies the excellent performance of this method.

关键词： radar target recognition high resolution range profile support vector discrimination classification

Demand response management of smart grid based on Stackelberg-evolutionary joint game

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Science China(Information Sciences) 2023年第8期66卷 169-186页

作者： Jun li tao li Daoyi DONG School of Mathematics-Physics and Finance Anhui Polytechnic University Key Laboratory of Pure Mathematics and Mathematical Practice School of Mathematical SciencesEast China Normal University School of engineering and Information Technology University of New South Wales

We investigated the real-time pricing demand response management system of multiple microgrids and multiple power users. Accordingly, we have proposed a Stackelberg-evolutionary joint game framework to examine the real-time pricing scheme of multiple microgrids and multiple power users so as to establish equilibrium strategies. Both a non-cooperative game among multiple microgrids and a multipopulation evolutionary game among multiple power users were considered. Furthermore, we constructed a Stackelberg game between microgrids and power users to reflect their sequential interaction, wherein the microgrids are leaders, and the power users are followers. We also proved the existence and uniqueness of the Stackelberg equilibrium. Furthermore, we proposed an iterative algorithm to compute the equilibrium strategy and demonstrate the convergence and effectiveness through numerical simulations, which demonstrated that the algorithm could achieve a balance between power supply and demand balance.

关键词： smart grid real-time pricing demand response management Stackelberg game multi-population evolutionary game

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Integrating Inventory Monitoring and Capacity Changes in Dynamic Supply Chains With Bi-Directional Cascading Propagation Effects

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IEEE/CAA Journal of Automatica Sinica 2024年第12期11卷 2515-2518页

作者： en-Zhi Cao Chen Peng Qing-Kui li the School of Mechatronic engineering and Automation Shanghai University IEEE the School of Automation Beijing Information Science and Technology University

Dear Editor,This letter focuses on the integration of inventory monitoring and capacity changes in dynamic supply chains(SCs) with the bullwhip effect(BE) and the ripple effect(RE). First, a new inventory monitoring model with stochastic switched topologies is proposed for SCs, potentially showing merits in incorporating the BE and the RE,and allowing control-theoretic approaches to identify their interrelations. Then, sufficient conditions on the existence of inventory controllers are derived such that the monitoring system is stabilizable with mitigation of the BE in the presence of the RE.

关键词： Monitoring Fluctuations Control theory Switches Topology Raw materials Markov processes

Joining mechanism of Mg alloy/steel butt joints with Cu-Zn interlayer by hybrid laser-TIG welding source

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Journal of Iron and Steel Research International 2018年第2期25卷 221-227页

作者： Gang Song Hong-yang Wang tao-tao li li-ming liu Key Laboratory of liaoning Advanced Welding and JoiningTechnology School of Materials Science and EngineeringDalian University of Technology Dalian 116024 LiaoningChina

Hybrid laser-TIG （tungsten inert gas） welding technology was used to join the Mg to steel with Cu-Zn interlayer. The effect of Al content in Mg alloy on the interface bonding of AZ31BMg/Q235 steel dissimilar butt joints was investigated. For comparison, ZK60 Mg alloy with no Al addition and AZ31 Mg alloy were utilized. The results showed that AZ31/Q235 butt joints with Cu-Zn interlayer, of which the fractures occurred in the Mg weld seam, showed quite sound and reliable interface bonding. The obvious concentration of element Al occurred along the Mg/steel interface. The results indicated that the addition of Cu-Zn interlayer, especially Zn, could significantly decrease the reaction temperature of Fe-Al at the Mg/ steel interface and promote the formation of reaction layer along the interface. The diffusion of Al element on the Mg-Fe interface was increased by the Cu-Zn interlayer. For ZK60 Mg alloy, Mg and Zn approaching the Mg-Fe interface were evaporated. The intense vaporizing could inhibit the direct contact between steel and Mg weld pool, even destroying the possible formation of reaction layer. The intimate interface bonding of AZ31/Q235 butt joints was attributed to the synergistic effect of element AI and Cu.

关键词： Hybrid laser-TIG welding Cu-Zn interlayer Aluminum Magnesium Steel

COFs-based Porous Materials for Photocatalytic Applications

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Chinese Journal of Polymer Science 2020年第7期38卷 673-684,I0004页

作者： Xun-liang Hua He-Guo li Bi-en Tan Key Laboratory of Material Chemistry for energy Conversion and Storage Ministry of EducationHubei Key Laboratory of Material Chemistry and Service FailureSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of NBC Protection for Civilian Research Institution of Chemical DefenseBeijing 100191China

Covalent organic frameworks(COFs)are an emerging class of photoactive materials,solely composed of light *** ordered structure,crystallinity,and high porosity led to enormous worldwide attention in many research *** extensiveπ-electron conjugation,light-harvesting and charge transport characteristics make them a fascinating polymer for photocatalytic *** selection of building blocks and innumerable synthetic methodologies enable them to be a robust platform for solar energy *** this mini-review,we summarized recent progress and challenges of the design,construction,and applications of COFs-based photocatalysts,and also presented some perspectives on challenges.

关键词： Covalent organic frameworks(COF) Covalent triazine frameworks(CTF) Photocatalysis