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Numerical study on two-phase flow through fractured porous media

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Science China(Technological Sciences) 2011年第9期54卷 2412-2420页

作者： HUANG ZhaoQin YAO Jun wang yueying TAO Ke School of Petroleum Engineering China University of Petroleum (Huadong) Qingdao 266555 China

Based on the flux equivalent principle of a single fracture, the discrete fracture concept was developed, in which the macroscopic fractures are explicitly described as （n-l） dimensional geometry element. On the fundamental of this simplification, the discrete-fractured model was developed which is suitable for all types of fractured porous media. The principle of discrete-fractured model was introduced in detail, and the general mathematical model was expressed subsequently. The fully coupling discrete-fractured mathematical model was implemented using Galerkin finite element method. The validity and accuracy of the model were shown through the Buckley-Leverett problem in a single fracture. Then the discrete-fractured model was applied to the two different type fractured porous media. The effect of fractures on the water flooding in fractured reservoirs was investigated. The numerical results showed that the fractures made the porous media more heterogeneous and anisotropic, and that the orientation, size, type of fracture and the connectivity of fractures network have important impacts on the two-phase flow.

关键词： fractured porous media two-phase flow discrete fracture numerical simulation

Leading High-Quality Development of Service Industry with Institutional Innovation

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China Finance and Economic Review 2023年第2期12卷 113-128,F0003页

作者： yueying wang Jiechang Xia University of Chinese Academy of Social Sciences National Academy of Economic Strategy Chinese Academy of Social Sciences(CASS)

To realize the transition from high-speed growth to high-quality development,it is necessary not only to change the way and path of economic growth,but also to speed up the improvement of the institutional system that is compatible with highquality *** has unique institutional advantages in promoting the high-quality development of the service industry(HQDSI),but the service industry is a typical institution-intensive industry that faces higher institutional barriers than the manufacturing ***,institutional reform and business environment optimization are particularly important to the promotion of HQDSI,and the effect is also very *** the future,we should lead HQDSI by building a high-standard socialist market economy,promote the high-quality and efficient development of the service industry by standardizing it,and encourage the innovation and entrepreneurship of the industry by improving the institutional environment,thus steadily boosting HQDSI in the new era of reform and opening up.

关键词： service industry high quality development institutional barrier institutional innovation

Adaptive coupled-sliding-variable-based finite-time control of composite formation for multi-robot systems

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Science China(Information Sciences) 2024年第10期67卷 244-260页

作者： Xinru MA Hengyu LI Jun LIU yueying wang Shaorong XIE Jun LUO School of Mechatronic Engineering and Automation Shanghai University School of Mathematics and Computer Application Technology Jining University School of Computer Science Shanghai University College of Mechanical and Vehicle Engineering Chongqing University

This paper focuses on the finite-time control(FTC) of the composite formation consensus(CFC)problems for multi-robot systems(MRSs). The CFC problems are firstly proposed for MRSs under the complex network topology of cooperative or cooperative-competitive networks. Regarding the problems of FTC and CFC on multiple Lagrange systems(MLSs), coupled sliding variables are introduced to deal with the robustness and consistent convergence. Then, the adaptive finite-time protocols are given based on the displacement approaches. With the premised FTC, tender-tracking methods are further developed for the problems of tracking information disparity. Stability analyses of those MLSs mentioned above are clarified with Lyapunov candidates considering the coupled sliding vectors, which provide new verification for tender-tracking systems. Under the given coupled-sliding-variable-based finite-time protocols, MLSs distributively adjust the local formation error to achieve global CFC and perform uniform convergence in time-varying tracking. Finally, simulation experiments are conducted while providing practical solutions for the theoretical results.

关键词： composite formation time-vary tracking information disparity tender-tracking finite-time control nonlinear robots complex networks symmetry consensus

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Molecular bases of morphologically diffused tumors across multiple cancer types

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National Science Review 2022年第11期9卷 65-67页

作者： Dingyun Liu Feiyang Xing yueying wang Jun Xiao Zheng An Ying Xu College of Computer Science and Technology Jilin University Center for Cancer Systems Biology China-Japan Union Hospital of Jilin University School of Life Sciences Jilin University China Computational Systems Biology Lab Department of Biochemistry and Molecular Biology and Institute of BioinformaticsUniversity of Georgia

Diffuse gastric cancer (DGC) and intestinal gastric cancer (IGC) are the two main gastric cancer subtypes [1]. Morphologically, DGC consists of numerous disjoint tiny tumors while IGC forms one or a few solid tumors (Supplementary Supplementary Fig. S1)[1,2]. In-depth studies have discovered that DGCs generally have an ill-defined or missing glandular structure and reduced cell–cell adhesion,

关键词： identification enantioselective semisynthesis (−)-anisomelic acid oral agent anti-SARS-CoV-2

P-wave fracture prediction algorithm using pre-stack data with limited azimuth distribution:A case study in the TZ45 area,Tarim Basin,China

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Petroleum Science 2011年第4期8卷 422-432页

作者： Sam Zandong Sun wang Zhaoming Yang Haijun Xiao Xi wang yueying Chen Lei Yang Pei Laboratory for Integration of Geology and Geophysics China University of Petroleum Beijing 102249 China Research Institute of Exploration ＆ Development PetroChina Tarim Oilfield Company Korla Xingjiang 841000 China

Fractured reservoirs always show anisotropic amplitude features,*** reflection amplitude of seismic waves varies with offset and azimuth （AVOZ）.A noise attenuation fracture inversion algorithm is presented for fracture detection based on P-wave *** conventional inversion method always fails when applied to limited azimuth data because of the existence of *** our inversion algorithm,special attention is paid to suppressing the noise during inversion,to overcome the limitation of the conventional inversion method on limited azimuth *** models are employed to illustrate the effectiveness of the *** inversion algorithm is then applied to Tazhong 45 area field data which is acquired under limited azimuth *** with cores and fullbore formation microimage （FMI）,the inverted results （fracture density and orientation） are reasonable,suggesting that the inversion algorithm is feasible for fracture prediction in the Tarim Basin.

关键词： Tarim Basin azimuthal anisotropy AVOZ inversion fracture detection

LMI-based Saturated Control of a Multi-vectored Propeller Airship 36

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LMI-based Saturated Control of a Multi-vectored Propeller Ai...

Fractured reservoir modeling by discrete fracture network and seismic modeling in the Tarim Basin,China

第36届中国控制会议

作者： Li Chen Dengping Duan yueying wang School of Aeronautics and Astronautics Shanghai Jiao Tong University

ISBN: (纸本)9781538629185

The problem of the design of a controller for a multi-vectored propeller airship is *** controller includes anti-windup that takes into account unsymmetrical actuator *** controller design methods were applied:one-step and two-step anti-windup controller design（AWC）.The one-step method obtains the controller and the anti-windup compensator in one step while the two-step method separates this process into separate stages for the linear controller design and the compensator *** results showed that both controllers enlarge the stability zone of the saturation system and have good tracking *** is shown that two-step design method not only has a larger region of stability,but the demanded actuator output exceeds the constraints less and has a smaller anti-windup coefficient matrix compared to the one-step method.

关键词： multi-vectored propeller airship unsymmetrical saturation anti-windup controller LMI

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cnki会议

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Petroleum Science 2011年第4期8卷 433-445页

作者： Sam Zandong Sun Zhou Xinyuan Yang Haijun wang yueying wangDi Liu Zhishui Laboratory for Integration of Geology ＆ Geophysics China University of Petroleum Beijing 102249 China Research Institute of Exploration ＆ Development PetroChina Tarim Oilfield Company Korla 841000 China

Fractured reservoirs are an important target for oil and gas exploration in the Tarim Basin and the prediction of this type of reservoir is *** to the complicated fracture system in the Tarim Basin,the conventional AVO inversion method based on HTI theory to predict fracture development will result in some ***,an integrated research concept for fractured reservoir prediction is put forward in this *** modeling plays a bridging role in this concept,and the establishment of an anisotropic fracture model by Discrete Fracture Network （DFN） is the key *** the fracture system in the Tarim Basin shows complex anisotropic characteristics,it is vital to build an effective anisotropic *** on geological,well logging and seismic data,an effective anisotropic model of complex fracture systems can be set up with the DFN *** effective elastic coefficients,and the input data for seismic modeling can be *** seismic modeling based on this model is performed,and the seismic response characteristics are *** modeling results can be used in the following AVO inversion for fracture detection.

关键词： Fractured reservoir Discrete Fracture Network (DFN) equivalent medium seismic modeling azimuth-angle gathers

Event-triggered adaptive finite-time control for nonlinear systems under asymmetric time-varying state constraints

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Frontiers of Information Technology & Electronic Engineering 2021年第12期22卷 1610-1624页

作者： Yan WEI Jun LUO Huaicheng YAN yueying wang School of Aeronautics and Astronautics Shanghai Jiao Tong UniversityShanghai 200240China School of Mechatronic Engineering and Automation Shanghai UniversityShanghai 200444China School of Information Science and Engineering East China University of Science and TechnologyShanghai 200237China

This paper investigates the issue of event-triggered adaptive finite-time state-constrained control for multi-input multi-output uncertain nonlinear *** prevent asymmetric time-varying state constraints from being violated,a tan-type nonlinear mapping is established to transform the considered system into an equivalent“non-constrained”*** employing a smooth switch function in the virtual control signals,the singularity in the traditional finite-time dynamic surface control can be *** logic systems are used to compensate for the unknown functions.A suitable event-triggering rule is introduced to determine when to transmit the control *** Lyapunov analysis,the closed-loop system is proved to be semi-globally practical finite-time stable,and the state constraints are never *** are provided to evaluate the effectiveness of the proposed approach.

关键词： Event-triggered control Nonlinear mapping Adaptive fuzzy control Finite-time State constraints

Homoharringtonine synergy with oridonin in treatment of t(8;21) acute myeloid leukemia

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Frontiers of Medicine 2019年第3期13卷 388-397页

作者： Weina Zhang Ying Lu Tao Zhen Xinjie Chen Ming Zhang Ping Liu Xiangqin Weng Bing Chen yueying wang State Key Laboratory of Medical Genomics Shanghai Institute of HematologyRuijin Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai 200025China

Collaboration of c-KIT mutations with AML1-ETO (AE) has been demonstrated to induce t(8;21) acute myeloid leukemia (AML).Targeted therapies designed to eliminate AE and c-KIT oncoproteins may facilitate effective treatment of t(8;21) *** (HHT) features activity against tumor cells harboring c-KIT mutations,whereas oridonin can induce t(8;21) AML cell apoptosis and AE ***,studies should explore the efficacy of combination therapy with oridonin and HHT in t(8;21) *** this study,we investigated the synergistic effects and mechanism of oridonin combined with HHT in t(8;21) AML cell line and mouse *** two drugs synergistically inhibited cell viability and induced significant mitochondrial membrane potential loss and *** and HHT induced significant downregulation of c-KIT and its downstream signaling pathways and promoted AE *** increased intracellular oridonin concentration by modulating the expressions of MRP1 and MDR1,thus enhancing the effects of *** combination of oridonin and HHT prolonged t(8;21) leukemia mouse *** conclusion,oridonin and HHT exert synergistic effects against t(8;21) leukemia in vivo and in vitro,thereby indicating that their combination may be an effective therapy for t(8;21) leukemia.

关键词： AML1-ETO c-KIT homoharringtonine oridonin t(8 21) AML synergistic effect