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Ultimately Bounded Output Feedback Control for Networked Nonlinear Systems With Unreliable Communication Channel: A Buffer-Aided Strategy

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IEEE/CAA Journal of Automatica Sinica 2024年第7期11卷 1566-1578页

作者： Yuhan zhang Zidong Wang Lei Zou yun Chen Guoping Lu the College of Electrical Engineering and Automation Shandong University of Science and TechnologyQingdao 266590China IEEE the Department of Computer Science Brunel UniversityUB83PHUnited Kingdom the College of Information Science and Technology Donghua UniversityShanghai 201620 the Engineering Research Center of Digitalized Textile and Fashion Technology Ministry of EducationShanghai 201620China the School of Automation Hangzhou Dianzi UniversityHangzhou 310018China the School of Electrical Engineering Nantong UniversityNantong 226019China

This paper concerns ultimately bounded output-feedback control problems for networked systems with unknown nonlinear dynamics. Sensor-to-observer signal transmission is facilitated over networks that has communication *** transmissions are carried out over an unreliable communication channel. In order to enhance the utilization rate of measurement data, a buffer-aided strategy is novelly employed to store historical measurements when communication networks are inaccessible. Using the neural network technique, a novel observer-based controller is introduced to address effects of signal transmission behaviors and unknown nonlinear *** the application of stochastic analysis and Lyapunov stability, a joint framework is constructed for analyzing resultant system performance under the introduced controller. Subsequently, existence conditions for the desired output-feedback controller are delineated. The required parameters for the observerbased controller are then determined by resolving some specific matrix inequalities. Finally, a simulation example is showcased to confirm method efficacy.

关键词： Buffer-aided strategy neural networks nonlinear control output-feedback control unreliable communication channel

Organic Brønsted Acid-Catalyzed Stereoselective Cationic RAFT Polymerization:The Effect of RAFT Agents

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Chinese Journal of Polymer Science 2024年第6期42卷 711-717页

作者： Zheng-Yi zhang Zan Yang yun Liao Sai-Hu Liao Key Laboratory of Molecule Synthesis and Function Discovery(Fujian Province University) College of ChemistryFuzhou UniversityFuzhou350108China State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen361005China Beijing National Laboratory for Molecular Sciences Beijing100190China

The tacticity of vinyl polymers is a key factor affecting the properties of ***,organic Brønsted acids have been demonstrated as effective catalysts for the development of highly stereoselective cationic reversible addition-fragmentation chain transfer(RAFT)polymerizations of vinyl ethers,in which the use of RAFT agents could allow the control the molecular weight and tacticity of polymer products ***,the effect of RAFT agents on the tacticity-regulation remains elusive and lacks of *** this study,we synthesized four types of RAFT agents and evaluated their influence in the stereoselective cationic polymerization of isobutyl vinyl ether in the presence of PADI as a Brønsted acid catalyst,which unveils that the Z group of RAFT agents could not only affect the polydispersity of the products,but also exert a profound effect on the *** extensive screening of the RAFT agents,high stereoregularity(isotacticity,90%m)was obtained when using dithiocarbonate ester-type RAFT agents with a benzyloxy Z group.

关键词： Bronsted acid catalysis Stereoselective cationic polymerization RAFT polymerization Chain transfer agents Tacticity

Prospects for weighing neutrinos in interacting dark energy models using joint observations of gravitational waves andγ-ray bursts

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Chinese Physics C 2024年第9期48卷 225-233页

作者： Lu Feng Tao Han Jing-fei zhang Xin zhang College of Physical Science and Technology Shenyang Normal UniversityShenyang 110034China Key Laboratory of Cosmology and Astrophysics(Liaoning Province)&Department of Physics College of SciencesNortheastern UniversityShenyang 110819China Key Laboratory of Data Analytics and Optimization for Smart Industry(Ministry of Education) Northeastern UniversityShenyang 110819China National Frontiers Science Center for Industrial Intelligence and Systems Optimization Northeastern UniversityShenyang 110819China

Cosmological observations can be used to weigh neutrinos,but this method is model-dependent,with results relying on the cosmological model *** we consider interactions between dark energy and dark matter,the neutrino mass constraints differ from those derived under the standard *** the contrary,gravitational wave(GW)standard siren observations can measure absolute cosmological distances,helping to break parameter degeneracies inherent in traditional cosmological observations,thereby improving constraints on neutrino *** paper examines the constraints on neutrino mass within interacting dark energy(IDE)models and explores how future GW standard siren observations could enhance these *** multi-messenger GW observations,we consider the joint observations of binary neutron star mergers by third-generation ground-based GW detectors and shortγ-ray burst observations by missions similar to the THESEUS satellite *** current cosmological observations(CMB+BAO+SN),we obtain an upper limit on the neutrino mass in the IDE models of 0.15(or 0.16)*** the inclusion of GW data,the upper limit on the neutrino mass improves to 0.14 *** indicates that in the context of IDE models,the improvement in neutrino mass constraints from GW observations is relatively ***,GW observations significantly enhance the constraints on other cosmological parameters,such as matter density parameter,the Hubble constant,and coupling strength between dark energy and dark matter.

关键词： interacting dark energy neutrino mass gravitational wave standard siren cosmology

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东道国禀赋条件、制度安排与FDI区位选择

华东经济管理 2015年第1期29卷 175-179页

作者：张云飞西安交通大学经济与金融学院陕西西安710061

文章研究发现:东道国的经济规模、双边贸易距离对FDI的区位选择具有普遍影响;东道国的禀赋条件和制度安排对FDI的区位选择具有不可忽视的作用,并在不同组别表现出差异性;流入高、中收入组的FDI更多的受"市场"因素驱动,而流入低收入组的... 详细信息

文章研究发现:东道国的经济规模、双边贸易距离对FDI的区位选择具有普遍影响;东道国的禀赋条件和制度安排对FDI的区位选择具有不可忽视的作用,并在不同组别表现出差异性;流入高、中收入组的FDI更多的受"市场"因素驱动,而流入低收入组的FDI更多地受到"非市场"因素影响。同时,无论全样本还是细分组,FDI的区位选择都表现出明显的"制度接近性"特征。

关键词： FDI区位选择引力模型制度安排禀赋差异

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试论社会建设的生态方向

北京行政学院学报 2010年第4期 46-49页

作者：张云飞中国人民大学马克思主义学院北京100872

生态需要是人的基本需要,生态福利是人的基本福利,因此,必须将人与自然的和谐(生态和谐)作为社会建设的基本方向。目前,重点是要保障人民群众的生态权益,实施生态式开发脱贫致富战略,推进生态住区建设,倡导和践行生态化的消费模式。为此... 详细信息

生态需要是人的基本需要,生态福利是人的基本福利,因此,必须将人与自然的和谐(生态和谐)作为社会建设的基本方向。目前,重点是要保障人民群众的生态权益,实施生态式开发脱贫致富战略,推进生态住区建设,倡导和践行生态化的消费模式。为此,必须充分发挥环境运动和环境团体在生态治理和社会治理中的作用,要努力提高其组织化和规范化水平。这样,才能为人民群众的幸福安康提供持续的自然物质条件。

关键词：社会建设生态需要生态福利生态和谐生态治理

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高血压病中医证型与血脂紊乱的相关性

中医杂志 2007年第7期48卷 626-628页

作者：张云飞四川省中医药研究院附属医院成都市人民南路四段51号610041

目的探讨高血压病不同中医证型与血脂紊乱的相关性以探索高血压病中医辨证的客观化指标。方法收集111例住院高血压病患者,设计调查表,准确填写临床资料,并以20名健康人作为对照组。由两名中级以上职称的医师根据有关高血压病的中医证候... 详细信息

目的探讨高血压病不同中医证型与血脂紊乱的相关性以探索高血压病中医辨证的客观化指标。方法收集111例住院高血压病患者,设计调查表,准确填写临床资料,并以20名健康人作为对照组。由两名中级以上职称的医师根据有关高血压病的中医证候标准进行辨证,得出辨证结论。对试验组不同证型之间及试验组与对照组进行比较。结果试验组与对照组比较,存在明显的血脂紊乱,尤以胆固醇(TC)升高和高密度脂蛋白胆固醇(HDL-C)降低最明显(P<0.05或P<0.01)。在试验组各证型的比较中,痰湿壅盛型HDL-C降低最明显。阴阳两虚型低密度脂蛋白胆固醇(LDL-C)升高明显。结论血清甘油三酯(TG)升高和HDL-C降低可以作为痰湿壅盛证辨证的客观化指标;LDL-C升高可以作为阴阳两虚证辨证的客观化指标。

关键词：高血压中医证型血脂辨证客观化

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基于压缩感知的跳频信号参数盲估计算法

通信学报 2017年第12期38卷 48-56页

作者：付卫红张云飞韦娟刘乃安西安电子科技大学通信工程学院陕西西安710071

针对现有的跳频信号参数估计算法没有充分考虑跳频信号频域稀疏特性的问题,提出一种基于压缩感知的跳频信号参数盲估计算法。该算法首先采用最大余弦法对经过压缩采样的跳频信号进行分段处理,估计出各段信号的跳频频率,然后,利用原子匹... 详细信息

针对现有的跳频信号参数估计算法没有充分考虑跳频信号频域稀疏特性的问题,提出一种基于压缩感知的跳频信号参数盲估计算法。该算法首先采用最大余弦法对经过压缩采样的跳频信号进行分段处理,估计出各段信号的跳频频率,然后,利用原子匹配的方法对含有跳变点的各段信号进行处理,精确估计出各个频率跳变时刻,进而估计跳速和起跳时刻。实验结果表明该算法在显著降低信号采样数据量和计算复杂度的同时,提高了参数估计精度。

关键词：跳频信号压缩采样参数估计原子匹配

Boosting Li-ion storage kinetics via constructing layered TiO_(2) anode

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Particuology 2024年第10期93卷 22-29页

作者： Jiyue Hou fei Wang Enfeng zhang Ying Wang Peng Dong yunxiao Wang Yiyong zhang Xue Li Yingjie zhang National and Local Joint Engineering Research Center of Lithium-ion Batteries and Materials Preparation Technology Faculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunming650093China College of Electrical Information Engineering Panzhihua UniversityPanzhihua617000China University Wollongong Australian Inst Innovat MatInst Superconducting&Elect MatInnovat Campus Squires WayWollongongNSW2500Australia

Due to the typical intercalation-deintercalation mechanism,TiO_(2) holds great promise as a sustainable anode for next-generation lithium-ion batteries(LIBs).However,commercial TiO_(2)(C–TiO_(2))is granular and shows slow ionic conductivity,which greatly hinders its development due to sluggish kinetics,leading to low reversible capacity and inferior rate *** this study,a two-dimensional layered TiO_(2)(L-TiO_(2))anode is prepared via a one-step calcination process,which can effectively shorten the lithium ions diffusion path and improve its lithium ions *** elucidated the enhanced electrochemical performance of L-TiO_(2) as an anode in LIBs through pseudocapacitive acceleration of lithium ions intercalation and deintercalation using various characterization techniques,including different scan rate cyclic voltammetry tests,in situ electrochemical impedance spectroscopy,in situ Raman spectroscopy,and in situ X-ray *** comparison to C–TiO_(2) material,L-TiO_(2) material showcases remarkable electrochemical performance,achieving a capacity of 166 mAh/g after 100 cycles at 0.1 ***,the lithium-ion diffusion coefficient calculated for the L-TiO_(2) is two orders of magnitude greater,underscoring its potential as a negative electrode material for LIBs.

关键词： Lithium-ionbatteries Anode MXene Layered TiO_(2)

新型城镇化背景下蒙古族游牧文化的传承与发展——以内蒙古牧区旗县为例

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云南民族大学学报（哲学社会科学版） 2015年第2期32卷 45-49页

作者：张云霏中央民族大学中国民族理论与民族政策研究院北京100081

游牧文化是蒙古族文化传统的根基,随着社会的发展,自然环境与社会环境发生了剧烈变迁,内蒙古牧区无法回避地卷入了如火如荼的城镇化进程中,蒙古族传统游牧社会正经历着前所未有的文化变迁。在新型城镇化建设进程中,必须坚持"以人为本,... 详细信息

游牧文化是蒙古族文化传统的根基,随着社会的发展,自然环境与社会环境发生了剧烈变迁,内蒙古牧区无法回避地卷入了如火如荼的城镇化进程中,蒙古族传统游牧社会正经历着前所未有的文化变迁。在新型城镇化建设进程中,必须坚持"以人为本,四化同步,优化布局,生态文明,文化传承"要义,充分发挥游牧文化在内蒙古牧区新型城镇化建设中的内在能动性,走一条将游牧文化镶嵌于内蒙古牧区的新型城镇化之路。

关键词：新型城镇化蒙古族游牧文化传承发展