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艺术评论 2019年第3期 23-27页

作者：张杰四川美术学院

Practical Exponential Stability of Two Dimensional Nonlinear Switched Positive Systems in the Roesser Model

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Journal of Systems Science & Complexity 2023年第3期36卷 1103-1115页

作者： ZHANG Jie SUN Yuangong School of Mathematical Sciences University of JinanJinan 250022China

This paper deals with the practical exponential stability of two-dimensional(2-D)nonlinear switched positive systems with impulse,disturbance and all modes unstable.Under the mode-dependent interval dwell time switching,new criteria such that 2-D nonlinear switched positive systems achieve practical exponential stability are derived.Furthermore,the explicit upper bound and convergence rate of the system state are estimated explicitly.Numerical examples indicate the correctness and effectiveness of the obtained results.

关键词： Disturbance impulse mode-dependent interval dwell-time(MDIDT)switching practical exponential stability roesser model

Artificial intelligence for optical transport networks:architecture,application and challenges

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The Journal of China Universities of Posts and Telecommunications 2022年第6期29卷 3-17页

作者： Li Yajie ZHANG Jie State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and TelecommunicationsBeijing 100876China

Optical network plays an important role in telecommunication networks, which supports high-capacity and long-distance transmission of Internet traffic. However, as the scaling and evolving of optical networks, it faces great challenges in terms of network operation, optimization and maintenance. Artificial intelligence(AI) has been proved to have superiority on addressing complex problems, by mimicking cognitive skills similar with human mind. In this paper, we provide a comprehensive investigation of AI applications in optical transport network. First, we give a general AI-based control architecture for optical transport networks. Then, we discuss several typical applications of AI model and algorithms in optical networks. Different use cases are considered, including network planning, quality of transmission(QoT) estimation, network reconfiguration, traffic prediction, failure management and so on. In addition, we also present some potential technical challenges for AI application in optical network for the next years.

关键词： artificial intelligence(AI) optical network control architecture typical application

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张晓杰从肝经湿热潜证论治银屑病进行期经验

中华中医药杂志 2019年第11期34卷 5251-5253页

作者：张莉张晓杰山东中医药大学济南250355 山东省中医院济南250011

文章介绍张晓杰教授治疗银屑病进行期的经验。银屑病从血论治的治疗观点虽达成广泛共识,但由于本病缠绵难愈,不少医家根据自己的临床经验从其他角度开拓创新治疗银屑病。张教授从肝经湿热潜证论治银屑病进行期取得良好的临床疗效。

关键词：张晓杰肝经湿热潜证银屑病进行期经验

Flexible liquid metal electromagnetic shielding materials

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Science China(Technological Sciences) 2023年第10期66卷 2757-2774页

作者： BAI YunLong ZHANG Jie zhang MingKuan RAO Wei Key Laboratory of Cryogenics Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China Beijing Key Lab of CryoBiomedical Engineering and Key Lab of Cryogenics Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China School of Engineering Science University of Chinese Academy of SciencesBeijing 100039China School of Future Technology University of Chinese Academy of SciencesBeijing 100049China Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control School of Mechanical EngineeringTianjin University of TechnologyTianjin 300384China National Demonstration Center for Experimental Mechanical and Electrical Engineering Education Tianjin University of TechnologyTianjin 300384China

The demand for flexible shielding has been rapidly growing in recent years.Shielding materials using solid metals,carbon materials,or MXenes as shielding units usually have difficulty in combining high shielding and flexibility(stretching and bending characteristics),and thus they gradually fail to meet the shielding needs of flexible electronics.Therefore,shielding materials with both flexibility and high conductivity are urgent to fill this gap.Gallium-based room temperature liquid metal(LM)is an emerging functional material with a low melting point,low viscosity,low modulus,and easy modification.However,due to wettability and compatibility issues,it is difficult to apply bulk LMs directly in the field of electromagnetic shielding(EMS).The article reviews the fabrication methods,performance,and applications of LMs EMS materials from three perspectives:Macroscopic LMs,micro/nano-LMs,and LM-based composites.The gallium-based liquid EMS materials demonstrate the characteristics of high shielding performance with stretchability and a wide shielding band.In this review,different types of gallium-based LM materials are described from macroscopic to microscopic,from liquid to semi-solid,from high density to low density,from room temperature to ultra-low temperature,and from monolayer structure to multilayer structure.The prospect of LM materials as amorphous high-performance EMS materials is demonstrated in various applications,such as mobile communication,astronomical observation,radar,and medical detection,showing tremendous potential in the EMS field.

关键词： liquid metal electromagnetic shielding flexibility

Residual Stresses and Forming Quality of Metal Bipolar Plates for PEMFC During the Stamping Process

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China Petroleum Processing & Petrochemical Technology 2023年第2期25卷 51-64页

作者： ZHANG Jie Wang Ruichuan Wu Ningpan National Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu 610500China School of Mechatronic Engineering Southwest Petroleum UniversityChengdu 610500China

Stamping is a critical step in the manufacture of metallic bipolar plates.Typically,residual stress and a spring back effect appear on the bipolar plate after the stamping process,which impacts on the performance and lifetime of the proton exchange membrane fuel cell(PEMFC).The residual stress and spring back behavior which occur as a result of stamping a bipolar plate are investigated in this study.The effects of the punch radius,the die radius,the channel depth,and the clearance between the punch and the die on the residual stress and forming quality of the bipolar plate are examined.The stamping process can be divided into three stages.The high stress area and the middle section residual stress area were selected to study the formation process and to obtain the composition of the residual stress regions.Spring back was mainly related to the position of the fixed end of the sheet and the degree of plastic deformation,and the sheet thickness have increased by 2μm after spring back.Based on the results of finite element analysis,as described by the distribution of residual stress,the formation,the thickness of the middle cross section and the equivalent plastic strain,it was found that all the tool parameters affected the distribution of the residual stress.This research can provide a design reference for the manufacture of metallic bipolar plates based on the stamping process.

关键词： PEMFC metallic bipolar plate stamping residual stress spring back

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张杰运用防风通圣散加减治疗皮肤病验案四则

浙江中医药大学学报 2023年第5期47卷 507-510页

作者：季阳张杰北京中医药大学东方医院北京100020 安徽中医药大学

[目的]总结张杰教授使用防风通圣散的经验,探讨本方临证应用的思路与方法。[方法]选取张杰教授使用防风通圣散治疗银屑病、结节性痒疹、接触性皮炎、荨麻疹的验案四则,并结合历代名医名家对本方的相关论述,从医理病机、治则治法、药物... 详细信息

[目的]总结张杰教授使用防风通圣散的经验,探讨本方临证应用的思路与方法。[方法]选取张杰教授使用防风通圣散治疗银屑病、结节性痒疹、接触性皮炎、荨麻疹的验案四则,并结合历代名医名家对本方的相关论述,从医理病机、治则治法、药物加减特色等方面对验案进行分析。[结果]张杰教授认为,皮肤病虽病位在肌表,然形诸外者,往往病诸内,其病因常在内外合邪,“表里交攻、血分瘀热、风热湿毒”是其常见病机,治疗上强调解表清里、疏风清热、凉血利湿,用防风通圣散加减最为合拍。文中所举四则医案虽病名各异,病因不离“风、热、湿、瘀”,证型总属“表里俱盛”,证同治亦同,故均以防风通圣散加减治疗,对证处理,卓有疗效。[结论]张杰教授辨证论治与辨病用药相结合,以防风通圣散改汤加减治疗多种皮肤病,丰富了防风通圣散的使用范围,见解独到、特色鲜明,值得临床学习参考。

关键词：防风通圣散银屑病结节性痒疹接触性皮炎荨麻疹名老中医经验张杰

A Fully Actuated System Approach for Stabilization of Discrete-Time Multiple-Input Nonlinear Systems with Distinct Input Delays

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Journal of Systems Science & Complexity 2022年第2期35卷 670-687页

作者： WU Ai-Guo ZHANG Jie JI Youzhou Harbin Institute of Technology(Shenzhen) Shenzhen 518055China HIT Wuhu Robot Technology Research Institute Wuhu 241008China

In this paper,the problem of stabilization is considered for discrete-time multiple-input nonlinear systems with distinct input delays law based on the fully actuated system approach.In order to compensate the input delays,a prediction scheme is presented to predict future states based on the closed-loop linear system.Then,a stabilizing law is constructed for nonlinear delayed systems by replacing the future states in the control law for the corresponding delay-free systems with their prediction.Finally,numerical examples are given to verify the effectiveness of the proposed approach.

关键词： Fully actuated system approach input delays nonlinear systems prediction scheme

Experimental Study of Heat Transfer and Film Cooling Performance of Upstream Ejected Coolant on a Turbine Endwall

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Journal of Thermal Science 2023年第2期32卷 718-728页

作者： ZHANG Jie LIU Cunliang zhang Li YAO Chunyi LI Lin School of Power and Energy Northwestern Polytechnical UniversityXi'an 710072China

An upstream coolant injection that is different from the known leakage flow was introduced to protect the turbine endwall.This coolant is ejected tangentially from a row of cylindrical holes situated at the side of a backward-facing step.In this experiment,the effects of mass flow ratio and leakage slot width on the endwall heat transfer characteristics were investigated.The dimensionless heat transfer coefficient(Nu)and adiabatic film cooling effectiveness(η)on an axisymmetric turbine endwall were measured by the stable-state thermochromic liquid crystal(TLC)technique and the pressure sensitive paint(PSP)technique,respectively.Three mass flow ratios(MFR)of 0.64%,0.85%,and 1.07%,as well as two leakage slot widths(W)of 3.93 mm,and 7.86 mm were considered.Results indicate that the injection film suppresses the strength of the passage vortex,which leads to the coolant covering almost the entire endwall.This result is more evident for the higher MFR cases,meanwhile,the corresponding averaged film cooling effectiveness is increased with the enhancement of the MFR.However,the case with a higher MFR produces a higher heat transfer coefficient distribution,especially in the region close to the leakage slot edge.Besides,when the W is lower,the endwall presents a higherηand a lower Nu for all the cases,which can guide the optimal design of the endwall.

关键词： axisymmetric turbine endwall film cooling effectiveness heat transfer coefficient coolant injection leakage slot

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Editorial

The Journal of China Universities of Posts and Telecommunications 2024年第2期31卷 1-2页

作者： ZHANG Jie Beijing University of Posts and Telecommunications Beijing 100876China

Integrated circuits(ICs)have become the cornerstone of the information age,driving scientific and technological revolutions and symbolizing strategic national competitiveness.With the continuous adjustment of economic structure and the changing of international relationships,the pivotal role of ICs and related sectors has become increasingly prominent.To address Chinese critical“bottleneck”challenges in this domain,it is necessary to strengthen the research on semiconductor devices,IC design,and manufacturing technologies.

关键词： corners driving symbol