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CONSENSUS AND r-CONSENSUS PROBLEMS FOR SINGULAR SYSTEMS

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Journal of Systems Science & Complexity 2014年第2期27卷 252-262页

作者： ZHANG Lequn FENG Jun-e yao juan School of Mathematics Shandong University

In this paper, the problem of consensus for continuous time singular systems of multi-agent networks is considered. The definition of r-consensus is introduced for singular systems of multi-agent networks. Firstly, linear systems with algebraic constraints are considered, and the corresponding results about consensus and average-consensus are derived. Then r-consensus and consensus problems of singular systems are investigated. Sufficient conditions of r-consensus and consensus are obtained,respectively. Finally, an illustrative example is given to show the effectiveness of the proposed method.

关键词： Balanced graphs consensus r-consensus singular systems strong connected graphs.

Kinetic study on desulfurization and denitrification using microwave irradiation over activated carbon

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Science China(Technological Sciences) 2011年第9期54卷 2321-2326页

作者： MA ShuangChen yao juan juan JIN Xin ZHANG Bo School of Environment North China Electric Power University Baoding 071003 China

Sulfur dioxide （SO2） and nitrogen oxide （NOx） in flue gas can be removed by combining microwave induced catalysis and adsorption on activated carbon. The reaction mechanisms of desulfurization and denitrification by microwave irradiation were analyzed based on the measurement of reaction products. Thermodynamic parameters for desulfurization and denitrification by thermal-carbon reduction were predicted according to the principles of thermodynamics. The experimental results indicated that the desulfurization and denitrification reaction processes include three reaction stages： slow reaction zone, transitional zone and rapid reaction zone. In high temperature zone, activation energies for the reduction of SO2 and nitrogen monoxide （NO） are 30.69 and 24.06 kJ mo1-1, respectively. This study shows that microwave can effectively enhance the removal of pollutants through its heating effect and the induced catalysis.

关键词： microwave desulfurization denitrification kinetics

Singular Boolean networks:Semi-tensor product approach

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Science China(Information Sciences) 2013年第11期56卷 265-278页

作者： FENG JunE yao juan CUI Peng School of Mathematics Shandong University School of Control Science and Engineering Shandong University

Singular Boolean networks are introduced in this *** semi-tensor product of matrices and the matrix expression of logical functions,two kinds of the condensed algebraic expressions of singular Boolean networks are *** normalization problem of singular Boolean networks is addressed;that is,under what condition singular Boolean networks can be converted into normal Boolean networks with algebraic *** one sufcient condition and one necessary and sufcient condition are derived for the normalization ***,the solvability of singular Boolean networks is discussed and the concept of admissible initial values of singular Boolean networks is ***,fxed points and cycles of singular Boolean networks are also investigated.

关键词： admissible initial value normalization problem semi-tensor product singular Boolean network

Drinking water production by uitrafiltration of Songhuajiang River with PAC adsorption

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Journal of Environmental Sciences 2007年第5期19卷 536-539页

作者： XIA Sheng-ji LIU Ya-nane LI Xing yao juan-juan State Key laboratory of Pollution Control and Resources Reuse Tongji University Shanghai 200092 China School of Environmental Science and Engineering Dong Hua UniversityShanghai 201620China School of Architecture and Civil Engineering Beijing University of Technology Bejing 100083 China

In recent years, membrane ultrafiltration （UF） of surface water for drinking water treatment has become a more attractive technology worldwide as a possible alternative treatment to conventional clarification. To evaluate the performance of ultrafiltration membranes for treatment of surface water in North China, a 48-m^2 low pressure hollow fiber membrane ultrafiltration pilot plant was constructed. Ultrafiltration was operated in cross-flow and with powdered activated carbon （PAC） adsorption. Turbidity was almost completely removed to less than 0.2 NTU （below Chinese standard 1 NTU）. It was found that PAC addition enhanced organic matter removal. The combined process of PAC/UF allowed to 41% removal of CODMn, 46% removal of DOC and 57% decrease in UV254 absorbance. The elimination of particles, from average 12000/ml in the raw water to approximately 15/ml in the permeated, was observed. When PAC concentration was below 30 mg/L, backwashing could recovery the membrane flux with backwash interval/backwashing duration of 1/30.

关键词： surface water drinking water treatment ultrafiltration powdered activated carbon

Syntheses and Crystal Structures of Two New One-dimensional Double Hydrogen-bonding-chain Complexes [Ni(bipy)_2Cl]·ClO_4 and [Zn(bipy)_2Cl]·BF_4

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Chinese Journal of Structural Chemistry 2007年第5期26卷 541-546页

作者： yao Jing-Cai yao Feng-juan GUO Jin-Bo HUANG Wei GOU Shao-Hua Department of Chemistry Luoyang Normal University Luoyang Henan 471022 China Coordination Chemistry Institute State Key Laboratory of Coordination Chemistry Nanjing University Nanjing Jiangsu 210093 China

Two new transition metal complexes, [Ni（bipy）2Cl]·ClO4 （bipy = 2,2＇-bipyridine） 1 and [Zn（bipy）2Cl]·BF4 2, have been synthesized and characterized by single-crystal X-ray diffraction analysis. Both 1 and 2 crystallize in monoclinic space group P21/n with Z = 4. For 1, a = 10.776（1）, b = 12.067（1）, c = 16.146（2）A, β = 93.021（2）o, V = 2031.9（4） A^3, Mr = 505.98, Dc = 1.654 g/cm^3, μ = 1.255 mm^–1, F（000） = 1032, the final R = 0.0406 and wR = 0.1002 for 3983 observed reflections with Ⅰ 〉 2σ（Ⅰ）. For 2, a = 10.758（4）, b = 12.058（4）, c = 16.135（5） A, β = 104.57（1）o, V = 2025.7（12） A^3, Mr = 500.00, Dc = 1.639 g/cm^3, μ = 1.396 mm^–1, F（000） = 1008, the final R = 0.0470 and wR = 0.1237 for 3759 observed reflections with Ⅰ 〉 2σ（Ⅰ）. The crystal structures of 1 and 2 are isostructural with very similar supramolecular structures. A one-dimen-sional zigzag double hydrogen-bonding-chain is generated by the intermolecular M-bipy ···anion···bipy- M hydrogen bonding interactions between the chelating ligands of bipy and anion.

关键词： double hydrogen-bonding-chain 2,2'-bipyridine transition metal

A Study on Finite-time Stability of Switched Linear System with Finitetime Unstable Subsystems 36

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A Study on Finite-time Stability of Switched Linear System w...

Analysis of blade vibration response induced by rotating stall in axial compressor

第36届中国控制会议

作者： Jialin Tan Weiqun Wang juan yao School of Science Najing University of Science and Technology School of Automatic Najing University of Science and Technology

ISBN: (纸本)9781538629185

In this paper, the problems of stability and stabilization for switched linear systems with finite-time unstable subsystems are revisited. Differ from the previous work, switching signal are designed with mode-dependent average dwell time（MDADT） property. Sufficient conditions are given to guarantee the switched linear systems with subsystems that are finitetime unstable being finite-time stability. Then, based on the results obtained, stabilization conditions for switched linear systems are presented to guarantee the underlying systems to be finite-time stability. A numerical example is employed to verify the efficiency of the preceding method.

关键词： switched linear system finite-time stability MDADT

来源： cnki会议评论

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航空动力学报 2012年第10期27卷 2269-2277页

作者： Zhang, Ming-Ming Hou, An-Ping Li, Jian-Xiong yao, juan Chen, Ying-Xiu School of Jet Propulsion Beijing University of Aeronautics and Astronautics Beijing 100191 China

An experimental and numerical study was conducted to investigate the forced response of blade vibration induced by rotating stall in a low speed axial *** have been made of the transient stalling process in a low speed axial compressor *** CFD study was performed using solution of 3-dimensional Navier-Stokes equations,coupled with structure finite element models for the blades to identify modal shapes and structural deformations *** between fluid and structure were managed in a coupled manner,based on the interface information exchange until convergence in each time *** on the rotating stall measurement data obtained from a low speed axial compressor,the blade aeroelastic response induced by the rotating stall flow field was analyzed to study the vibration characteristics and the correlation between the *** this approach,good agreement between the numerical results and the experimental data was *** flow phenomena were well captured,and the results indicate that the rotating field stall plays a significant role in the blade vibration and stress affected by the flow excitation.

关键词： compressor rotating stall blade forced response CFD fluid-structure interaction

Analysis and simulation of the tune ripple effect on beam spill ripple in RF-KO slow extraction

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Nuclear Science and Techniques 2022年第5期33卷 91-101页

作者： Wen-Bo Ye Hong-juan yao Shu-Xin Zheng Xia-Ling Guan Xue-Wu Wang Key Laboratory of Particle and Radiation Imaging(Tsinghua University) Ministry of EducationBeijing 100084China Laboratory for Advanced Radiation Sources and Application Tsinghua UniversityBeijing 100084China Department of Engineering Physics Tsinghua UniversityBeijing 100084China

Tune ripple has a significant influence on beam spill ripple in RF-knockout(RF-KO)slow *** this study,a model was proposed to explain how the tune ripple affects the beam spill in RF-KO slow extraction;consequently,a simulation was performed using the lattice of the Xi’an Proton Application Facility(XiPAF)synchrotron to verify the *** simulation demonstrates that the tune ripple influences the beam spill in two *** the one hand,the tune ripple causes a direct fluctuation in the separatrix area,which induces beam spill *** the other hand,the tune ripple influences the emittance growth rate in RF-knockout slow *** two aspects simultaneously contribute to the beam spill ripple.

关键词： RF-knockout slow extraction Synchrotron Tune ripple Power supply ripple Beam spillripple

Should we open or close the suction port of bronchial blocker during one-lung ventilation?

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The Journal of Biomedical Research 2022年第2期36卷 145-146页

作者： juan yao Xiao-Xiang Tan Jie Sun Department of Anesthesiology Zhongda HospitalSoutheast UniversityNanjingJiangsu 210009China Department of Anesthesiology Zhongda HospitalMedical School of Southeast UniversityNanjingJiangsu 210009China

Dear Editor,With the development of video-assisted thoracoscopic surgery(VATS),one-lung ventilation(OLV)technique has become a fundamental component of thoracic anesthesia as it facilitates surgical field *** blocker(BB)functions as one of the frequently used equipment for *** tends to bring less stress response and less postoperative airway complications than a traditional double-lumen endotracheal tube[1].But to anesthesiologists and surgeons,it takes more time to collapse the in-dependent *** anesthesiologists often open the suction port of BB to accelerate non-ventilated lung collapse during OLV[1].Our two cases here may challenge the feasibility of opening the suction port of BB during OLV.

关键词： lung blocker anesthesia