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Control Theory and Technology 2024年第3期22卷 455-467页

作者： R.H.Harsha Nawarathna yuandan lin Yuan Wang Department of Mathematical Sciences Florida Atlantic UniversityBoca RatonFL 33431USA

We consider how small delays affect the integral-input-to-state stability(iss)property for a *** result is similar to the input-to-state stability(Iss)result obtained in[1]:the iss property will be preserved in a practical and semi-global manner if the delay interval is small ***,since the iss quantifies the robust stability in terms of a generalized Li norm of the inputs instead of a generalized Loo norm of the inputs for the Iss case,the techniques and proofs for the Iss case do not apply to the iss case *** the proofs in[1]are based on the Lyapunov-Razumikhin approach,our proofs are based on the iss-Lyapunov functions for the zero-delay *** addition to the interest by its own in showing how the iss property is affected by small delays,the result also serves to the study of the iss property for singularly perturbed systems.

关键词： Integral-input-to-state stability Nonlinear systems Small delays Lyapunov method

STABILIZATION OF NONlinEAR TIME-VARYING SYSTEMS:A CONTROL LYAPUNOV FUNCTION APPROACH

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Journal of Systems Science & Complexity 2009年第4期22卷 683-696页

作者： Zhongping JIANG yuandan lin Yuan WANG Department of Electrical and Computer Engineering Polytechnic Institute of New York University BrooklynNY 11201 USA. Department of Mathematical Sciences Florida Atlantic University Boca Raton FL 33431 USA.

This paper presents a control Lyapunov function approach to the global stabilizationproblem for general nonlinear and time-varying systems. Explicit stabilizing feedback control laws areproposed based on the method of... 详细信息

关键词： Control Lyapunov functions (clf) global stabilization nonlinear time-varying systems.

A Compact Dual-Band Quasi-Elliptic Filter Employing Meander-line-and CRLH-Based SIW Triplets

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Electromagnetic Science 2024年第3期2卷 79-85页

作者： Yilong Zhu yuandan Dong lin Gu Deisy Formiga Mamedes Jens Bornemann School of Electronic Science and Engineering University of Electronic Science and Technology of ChinaChengdu 611731China Aerospace Information Research Institute Chinese Academy of SciencesBeijing 100094China Department of Electrical and Computer Engineering University of VictoriaVictoriaBC V8W 2Y2Canada

A compact dual-band quasi-elliptic filter with high selectivity is developed and investigated in this *** employs two hybrid-structure substrate integrated waveguide(SIW)triplets,which show completely inverse transfer responses under the same conditions of inductive cross *** first meander-line-based triplet is able to produce a transmission zero(TZ)above the *** the second SIW triplet,which is composed by a composite right/left-handed(CRLH)resonator,creates a TZ below the *** utilizing these features,a dual-band quasi-elliptic filter based on SIW dual-mode resonances(TE101 and TE201),whose operating frequencies are allocated at 8 GHz and 10 GHz,is designed for *** design process,principles,and experiments are carefully described in this *** measured and simulated results are in good agreement,indicating excellent electrical performance with low loss,compact device size and high *** most notable point is that a dual-band quasi-elliptic filter on SIW platforms is obtained with all inductive couplings for the first time,which shows a unique benefit in eliminating negative-coupling structures while permitting miniaturization for SIW dual-band filter design.

关键词： Dual-band quasi-elliptic filter High selectivity Compact size Meander-line and CRLH resonators Substrate integrated waveguide

L1 DECONVOLUTION FOR A STATIONARY NON-MINIMUM PHASE AR（p） MODEL

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Systems Science and Mathematical Sciences 1988年第2期 148-158页

作者：许文源贾沛璋林元淡 Institute of Systems Science Academia Sinica Beijing China

This paper provides the theoretical fundamentals of L1 deconvolution for thestationary time series{yn}which satisfies a non-minimum phase AR（p）*** algorithmof the L1 deconvolution and its convergency are analyzed in *** theoretical analysisand numerical examples show that this kind of deconvolution is especially appropriate forthe case of P（xn=0）≠0,where{xn}is the system input resulting in{yn};and such a caseis just interesting in seismic signal processing.

关键词： MODEL L1 DECONVOLUTION FOR A STATIONARY NON-MINIMUM PHASE AR ARMA

Erratum to“A note on overshoot estimation in pole placements”

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控制理论与应用（英文版） 2005年第3期3卷 258-258页

作者： Daizhan CHENG Lei GUO yuandan lin Yuan WANG Institute of Systems Science Chinese Academy of Sciences Beijing 100080 China Deptarment of Mathematical Sciences Florida Atlantic University Boca Raton FL 33431 USA

There is a mild flaw in the statement of Proposition 2.1 in the above paper （cf. [1] ）. We restate it as follows.

关键词： A note on overshoot estimation in pole placements Erratum to

Recent Results on Stability Analysis and Synthesis of Discrete-Time Systems

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Recent Results on Stability Analysis and Synthesis of Discre...

2型糖尿病患者胰岛素敏感性与甲状腺激素相关性分析

第二十四届中国控制会议

作者： Zhongping Jiang~, yuandan lin Yuan Wang 1 Dept. of Electrical & Compu!er Engineering, Polytechnic University Six Metrotech Center, Brooklyn, NY 11201, USA 2 Dept. of Mathematical Sciences, Florida Atlantic University 777 Glades Road, Boca Raton, FL33431, USA

＜正＞ In this work we discuss some recent work on input-to-state stability for discrete time systems, including its extension to input-to-output stability applied to a more general context where only partial stability is considered. A small gain theorem is presented for interconnected systems in terms of input-to-output gain functions.

关键词： Discrete time system nonlinear robust stability input-to-state stability Lyapunov method.

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重庆医学 2015年第15期44卷 2055-2056,2059页

作者：应元旦林日可杨宁浙江省平阳县中医院检验科 325401 浙江省平阳县中医院内分泌科 325401

目的探讨2型糖尿病患者胰岛素敏感性与甲状腺激素水平的关系,分析甲状腺激素与2型糖尿病病理关系。方法选择86例2型糖尿病患者列为观察组,选取同期健康体检者72例为对照组。所有患者实施空腹血浆葡萄糖(FPG)、餐后2h血糖(2hPG)及甲状腺... 详细信息

目的探讨2型糖尿病患者胰岛素敏感性与甲状腺激素水平的关系,分析甲状腺激素与2型糖尿病病理关系。方法选择86例2型糖尿病患者列为观察组,选取同期健康体检者72例为对照组。所有患者实施空腹血浆葡萄糖(FPG)、餐后2h血糖(2hPG)及甲状腺激素检测,包括游离四碘甲状腺原氨酸(FT4)、游离三碘甲状腺原氨酸(FT3)、促甲状腺激素(TSH),计算胰岛素敏感性指数(ISI),分析胰岛素敏感性与甲状腺激素水平的关系。结果观察组FT3、FT4、FT3/FT4、HOMA-IR、ISI分别为(4.82±1.13)pmol/L、(13.12±4.36)pmol/L、0.39±0.08、2.94±0.37、-5.18±0.82,与对照组比较差异有统计学意义(P0.05);整体指标HOMA-IR与FT3呈负相关(r=-0.543,P=0.000),与FT4呈正相关(r=0.611,P=0.000),ISI与FT3呈正相关(r=0.551,P=0.001),与FT4呈负相关(r=-0.599,P=0.000)。结论甲状腺激素水平与胰岛素敏感性关系密切,甲状腺激素水平可能是2型糖尿病发病机制的部分病理原因。

关键词：糖尿病,2型胰岛素敏感性甲状腺激素

Topological states switching and group velocity control in two-dimensional non-reciprocal Hermitian photonic lattice

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Chinese Physics B 2023年第11期32卷 56-62页

作者：林宇王元旦杨俊豪符艺萱齐新元 School of Physics Northwest UniversityXi’an 710127China

We proposed a model with non reciprocal coupling coefficients, in which the imaginary parts γ indicate the phase delay or exceed term. The distributions of band structure and the group velocity are both characterized as a function of the coupling. we studied the system’s topological states and group velocity control. The results show that the movement and breaking of Dirac points exist in the energy band of the system. By changing the coupling coefficients, the conversion between any topological states corresponds to different Chern number. Topological edge states exist in topological nontrivial systems that correspond to the two different Chern numbers. Besides, it is also found that both the coupling coefficient and the wave vector can cause the oscillation of the pulse group velocity. At the same time, the topological state can suppress the amplitude of the group velocity profiles. Our findings enrich the theory of light wave manipulation in high-dimensional photonic lattices and provide a novel view for realizing linear localization and group velocity regulation of light waves,which has potential application in high-speed optical communication and quantum information fields.

关键词： Dirac point imaginary coupling Chern number group velocity

天目山国家级自然保护区毛竹林扩张对生物多样性的影响

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东北林业大学学报 2014年第9期42卷 43-47,71页

作者：林倩倩王彬马元丹吴呈昱赵明水浙江农林大学亚热带森林培育国家重点实验室培育基地临安311300 浙江天目山国家级自然保护区管理局

为研究毛竹林扩张对植物多样性的影响,在浙江天目山国家级自然保护区内,采用样方调查法对毛竹林、常绿阔叶林、毛竹-常绿阔叶林、针叶林、毛竹-针叶林、针阔混交林、毛竹-针阔混交林等7种群落进行调查,分析毛竹扩张对自然保护区植物群... 详细信息

为研究毛竹林扩张对植物多样性的影响,在浙江天目山国家级自然保护区内,采用样方调查法对毛竹林、常绿阔叶林、毛竹-常绿阔叶林、针叶林、毛竹-针叶林、针阔混交林、毛竹-针阔混交林等7种群落进行调查,分析毛竹扩张对自然保护区植物群落立木数、不同类型不同层次的物种丰富度、多样性指数及均匀度指数的影响。结果表明:毛竹林的立竹度为3700株·hm-2,毛竹扩散到其他森林类型,均造成其他树种立木数的降低。受毛竹扩张的影响,常绿阔叶林、针叶林、针阔混交林植物群落的乔木层物种丰富度、多样性指数及均匀度有减小的趋势。灌木层中,由于受毛竹扩张的影响,常绿阔叶林和针叶林的物种丰富度、多样性指数及均匀度增大。草本层中,常绿阔叶林和针叶林的物种丰富度、多样性指数及均匀度基本未受毛竹扩张的影响。

关键词：自然保护区毛竹扩张生物多样性

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滚装货船薄板焊接变形及对策分析

机械制造文摘（焊接分册） 2019年第2期 29-33页

作者：谭安全林虹兆刘元丹中国船级社重庆分社重庆401121 中船黄埔文冲船舶有限公司广东广州510715

基于多艘大型滚装货船建造检验实际情况,梳理了薄板焊接变形的部位和类型,针对不同变形采取了相应的控制方案和纠正措施,包括对船舶设计图纸的优化和现场施工工艺的控制。结果表明,薄板变形得到有效控制,船舶质量水平进一步提升。

关键词：船舶薄板焊接变形