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Improved stochastic synchronization criterion of delayed Markovian coupled neural networks with random coupling strengths and partial information on transition probabilities 36

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Improved stochastic synchronization criterion of delayed Mar...

第36届中国控制会议

作者： Deqiang Zeng Ruimei Zhang kaibo shi Shouming Zhong Data Recovery Key Laboratory of Sichuan Province College of Mathematics and Information ScienceNeijiang Normal University School of Mathematics Sciences University of Electronic Science and Technology of China School of Information Sciences and Engineering Chengdu University

ISBN: (纸本)9781538629185

This paper investigates the synchronization problem of delayed Markovian coupled neural networks with random coupling strengths and partial information on transition probabilities. In this coupled neural network model, each transition rate is only known partial information, and the coupling strengths are characterized by mutually independent random *** constructing a new augmented Lyapunov-Krasovskii functional（LKF） and reciprocal convex combination, synchronization criterion is derived. In comparison with existing results, the established criterion is not only less conservative but with less computational burden. Finally, a numerical example is provided to demonstrate the effectiveness of the proposed criterion.

关键词： Markovian coupled neural networks Stochastic synchronization Random coupling strengths Partial information on transition probabilities

Sliding Mode Control for Recurrent Neural Networks With Time-Varying Delays and Impulsive Effects

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IEEE/CAA Journal of Automatica Sinica 2023年第5期10卷 1319-1321页

作者： Lanfeng Hua kaibo shi Zheng-Guang Wu Soohee Han Shouming Zhong the School of Automation Engineering University of Electronic Science and Technology of ChinaChengdu 611731China the School of Electronic Information and Electrical Engineering Chengdu UniversityChengdu 610106China the Institute of Cyber-Systems and Control Zhejiang UniversityHangzhou 310027China the Department of Electrical Engineering and Convergence IT Engineering Pohang University of Science and TechnologyPohang 37673South Korea the School of Mathematics Sciences University of Electronic Science and Technology of ChinaChengdu 611731China

Dear Editor,This letter studies the problem of sliding mode control(SMC)design for recurrent neural networks(RNNs)with impulsive disturbances and time-varying transmission *** this end,an appropriate integral sliding ... 详细信息

关键词： impulsive letter delays

Novel mean square exponential stability criterion of uncertain stochastic interval type-2 fuzzy neural networks with multiple time-varying delays 36

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Novel mean square exponential stability criterion of uncerta...

第36届中国控制会议

作者： Deqiang Zeng kaibo shi Ruimei Zhang Shouming Zhong Data Recovery Key Laboratory of Sichuan Province College of Mathematics and Information ScienceNeijiang Normal University School of Information Sciences and Engineering Chengdu University School of Mathematics Sciences University of Electronic Science and Technology of China

ISBN: (纸本)9781538629185

This paper investigates the problem of mean square exponential stability for uncertain stochastic interval type-2(IT2)fuzzy neural networks with multiple time-varying delays. First, IT2 fuzzy neural network is introduced, which takes time delays and parameter uncertainties into account. Compared with the existing results, our model is more applicable since time delays and parameter uncertainties are very common due to environmental and artificial factors. Then, on the basis of a LyapunovKrasovskii functional(LKF), stochastic analysis approach, and It o?’s differential formula, a new sufficient condition is derived to guarantee the mean square exponential stability of the considered IT2 fuzzy neural network. Finally, a numerical example is provided to show the effectiveness of the proposed criterion.

关键词： Neural networks IT2 fuzzy systems Uncertain stochastic systems Mean square exponential stability

Novel delay-probability-distribution-dependent mean square stability analysis for stochastic neural networks 36

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Novel delay-probability-distribution-dependent mean square s...

第36届中国控制会议

作者： LUO Jinnan TIAN Wenhong ZHONG Shouming shi kaibo WANG Wenqin School of Information and Software Engineering University of Electronic Science and Technology of China School of Mathematical Sciences University of Electronic Science and Technology of China School of Information Science and Engineering Chengdu University School of Sciences Tianjin Polytechnic University

ISBN: (纸本)9781538629185

In this paper, the delay-probability-distribution-dependent stability problem for stochastic neural networks with various time-varying delays is investigated. By considering a new Lyapunov-Krasovskii functional（LKF） concluding more delaypartitioning term and combining free weight matrices and stochastic processing techniques, an improved delay-probabilitydistribution-dependent condition is built in terms of linear matrix inequality（LMI） so that the system is mean square ***, a numerical example is given to verify the effectiveness the proposed criterion.

关键词： Stochastic neural networks Probability-distribution Multiple delays

Hydrocarbon migration in fracture-cave systems of carbonate reservoirs under tectonic stresses: A mechanism study

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Petroleum Research 2020年第2期5卷 124-130页

作者： Chenjun Huang Geyun Liu kaibo shi Jinyin Yin Jinrui Guo Chongzhi Tao Petroleum Exploration and Production Research Institute SINOPECBeijing100083China Center of Journals&Annals Hebei GEO UniversityShijiazhuang050031China School of Earth and Space Sciences Peking UniversityBeijing100871China

The fracture-cave systems of carbonate reservoirs have almost stored 30% of recoverable oil and gasaround the world. However, it is still doubtful about the mechanism of hydrocarbon migration in thefracture-cave systems. In this work, deducing from the Eshelby’ solution, we derived the equation tocalculate the bulk strain of elliptic cylinder caves applied by stresses. Calculated results indicate that thebulk strain of caves negatively increases with the radius ratio of the elliptic cave axials under fixedstresses. In the case of the effective horizontal stress increasing from 30 MPa to 80 MPa, the bulk straindifference of a cave could be up to 0.5%. It may result in 0.4% of the total cave volume of fluid transportingthrough the fracture-cave systems within such a stress cycle. Since the tectonic stresses transform in acyclic way, the volumetric ratio of new-to-old fluid in a cave would increase with the number of stresscycles. As a result, we proposed that the periodic fluid flow induced by cyclic tectonic stresses could be animportant mechanism for hydrocarbon migration in the fracture-cave systems of carbonate reservoirs.

关键词： Eshelby’solution Bulk strain Cyclic tectonic stress Periodic fluid flow Fracture-cave system Carbonate reservoir

Sedimentary and evolutionary characteristics of Sinian in the Tarim Basin

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Petroleum Research 2017年第3期2卷 264-280页

作者： kaibo shi Bo Liu Weimin Jiang Xiaoqiao Gao shiqi Liu Yingchu Shen School of Earth and Space Science Peking UniversityBeijing 100871China Institute of Oil and Gas Peking UniversityBeijing 100871China School of Earth Sciences and Resources China University of GeosciencesBeijing 100083China

Analysis of Sinian outcrops in the peripheral regions of the Tarim Basin,drilling and seismic data within the Tarim Basin,and combined with previous studies,distribution of Sinian strata,tectonic setting,sedimentary system and lithofacies palaeogeography were well *** showed that three sedimentary systems were developed in the Sinian System of the Tarim Basin,*** clastic sedimentary system,the clastic-carbonate mixed sedimentary system,and the carbonate sedimentary system,vertical sedimentary characteristics evolved from the clastic sedimentary system to the carbonate sedimentary *** three sedimentary systems were corresponded to three transgression-regression cycles in the *** marine transgression during the initial period of the Early Sinian(ZSQI)resulted in development of the clastic sedimentary system in the lower part of the Lower Sinian;the transgression during the late period of the Early Sinian(ZSQII)led to formation of the clastic-carbonate mixed sedimentary system in the upper part of the Lower Sinian;the transgression during the initial period of the Late Sinian(ZSQIII)resulted in development of carbonate sedimentary system in the Upper *** regressions resulted in formation of three unconformities,which were on the middle part of the Lower Sinian,the top of the Lower Sinian and the top of the Upper Sinian *** to breakup of Rodinia supercontinent in the Neoproterozoic,the Tarim Basin was in the continental rifting evolutionary *** the Sinian,the basin experienced evolutionary processes of intra-cratonic depression and passive continental margin,thus characteristic of the lithofacies palaeogeography was characterized by uplifts in the south and depressions in the *** the Early Sinian,the Tarim Basin developed the Bachu-Tazhong-Tadongnan uplift and the Tabei residual ancient land,and the shore-shelf sedimentary environment in the north as well as the shore-shelf-bathyal sedimentary environme

关键词： Sinian Sequence Clastic sedimentary system Clastic-carbonate mixed sedimentary system Carbonate sedimentary system Lithofacies palaeogeography Tarim Basin

New Insights into the Depositional Environments of Ordovician Carbonate Formations in the Yubei Area of Tarim Basin Based on Standard Microfacies Types

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Acta Geologica Sinica(English Edition) 2017年第2期91卷 755-756页

作者： HUANG Chenjun LIU Geyun MA Yongsheng LIU Bo LIU Hongguang shi kaibo School of Earth and Space Sciences Peking UniversityBeijing 100871China Institute of Oil&Gas Peking UniversityBeijing 100871China School of Earth Sciences and Resources China University of GeosciencesBeijing 100083China China Petroleum&Chemical Corporation Beijing 100728China

Objective The Yubei area is located in the mid-east Maigaiti slope of southwestern Tarim Basin, China, with an exploration history of several years. Recent exploration has preliminarily indicated that the Ordovician carbonate formations in this area have some oil and gas potential. Carbonate microfacies provides material basis for reservoir development, seal formation and hydrocarbon generation. Therefore, this work utilized the standard microfacies （SMF） types to study the microfacies of the Ordovician formations in the Yubei area in order to provide theoretical basis for the next exploration.

关键词： In New Insights into the Depositional Environments of Ordovician Carbonate Formations in the Yubei Area of Tarim Basin Based on Standard Microfacies Types

Petrology and geochemical characteristics of dolomite in the Middle Permian Maoukou Formation,central Sichuan

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Petroleum Research 2017年第4期2卷 366-377页

作者： Jianqiang Liu Haofu Zheng Bo Liu Hongguang Liu kaibo shi Rongtao Guo Xuefeng Zhang School of Earth and Space Sciences Peking UniversityBeijing 100871China Institute of Oil&Gas Peking UniversityBeijing 100871China

Dolomites of the Maokou Formation in the central Sichuan were mainly developed in the middle-upper part of Member 2 and the lower part of Member 3 of Maokou Formation,it could be divided into fine-to medium-grained calcareous dolomite,fine-to medium-grained dolomite and breccia dolomite according to petrology characteristic,and the latter two were *** contrast of geochemical characteristic between micritic limestone and different types of dolomite,the dolomite was characterized by low Fe content,high Mn content and low Sr content relative to the micritc *** micritic limestone and different types of dolomite had similar rare earth element(REE)distribution patterns which were characterized by depletion of light REE,weak positive anomaly of La and negative anomaly of Ce,and the dolomite also had weak positive anomaly of *** with the micritic limestone,the fine-to medium-grained dolomite and breccia dolomite had low values of δ^(18)O and obvious high ratios of^(87)Sr/^(86)*** distribution patterns of different types of dolomite indicated that some geochemical characteristics of primitive limestone were preserved during the dolomitization process in the Maokou Formation,while weak Eu positive anomaly of dolomite and isotopic difference in dolomite and limestone might be caused by high-temperature thermal fluids during the dolomitization *** dolomitization of the Maokou Formation was controlled by some factors:(1)strata residual seawater and hydrothermal fluids derived from magmatism were major sources of Mg during the dolomitization process;(2)heating effect of Emeishan large igneous province provided abnormal high paleogeotemperature for dolomitization;(3)fault systems offered rapid migration channels for abnormal geothermal convection and dolomitization fluid;(4)limestone of grain-shoal facies with good porosity and permeability was more prone to dolomitization than micritic *** geotemperature and abundant Mg sup

关键词： Dolomite Geochemistry Dolomitization Emeishan Large Igneous Province Maokou Formation Central Sichuan

Non-fragile memory sampled-data LFC for semi-Markov jump interconnected multi-area power systems: A looped functional approach

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Non-fragile memory sampled-data LFC for semi-Markov jump int...

第43届中国控制会议

作者： Yulong Li Xiaoqing Li Zhinan Peng kaibo shi School of Electrical Engineering and Automation Hefei University of Technology School of Automation Engineering University of Electronic Science and Technology of China School of Information Science and Engineering Chengdu University

The problem of memory sampled-data load frequency control(LFC) for semi-Markov jump interconnected multi-area power systems(IMAPSs) has been elaborately presented in this work. Firstly, the semi-Markov jump process(MJP) is introduced to model the dynamical random mutations of the IMAPSs. Subsequently, a memory sampled-data LFC method concerning signal transmission delay caused by geographical isolation for the semi-Markov jump IMPASs is accordingly delivered. By considering the parameter fluctuations in practical operation, the non-fragile issue for the proportional-integral(PI) controller is included to meet the actual operation scenario. After that, a mode-dependent two-side looped Lyapunov–Krasovskii functional is properly adopted to acquire enhanced flexibility of the derived sufficient condition in the shape of linear matrix inequalities(LMIs), which guarantees the stochastic stability with prescribed H∞ performance. Finally, a numerical example is exhibited to validate the effectiveness of the developed control strategy.

关键词： Semi-Markov jump interconnected multi-area power systems(IMAPSs) memory sampled-data load frequency control(LFC) non-fragile proportional-integral(PI) strategy