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An Improved Repetitive-Control system Using a Complex-Coefficient Filter

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IEEE/CAA Journal of Automatica sinica 2025年第1期 282-284页

作者： Qicheng Mei Jinhua she Fei long Yanjun shen the College of Electrical Engineering and New Energy China Three Gorges University the Hubei Provincial Key laboratory for Operation and Control of Cascaded Hydropower station the school of Engineering Tokyo University of Technology

Dear Editor,This letter presents an improved repetitive controller(IRC) that uses a complex-coefficient filter to enhance the tracking performance of a system for periodic signals. Compared with the low-pass filter used in the conventional repetitive controller(CRC), the complex-coefficient filter causes less change in the phase and amplitude of a signal at the frequencies of the periodic signal, especially at the fundamental frequency, when the two filters have the same cutofffrequency.

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Emerging role of A-kinase anchoring protein 5 signaling in reward circuit function

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Neural Regeneration Research 2025年第10期20卷 2913-2914页

作者： William J.Flerlage Mark l.Dell’Acqua Brian M.Cox Fereshteh s.Nugent Uniformed services University of the Health sciences Department of Pharmacology and Molecular TherapeuticsBethesdaMDUSA Department of Pharmacology University of Colorado School of MedicineAnschutz Medical CampusAuroraCOUSA

There is a strong evidence supporting the hypothesis of synaptic dysfunction as a major contributor to neural circuit and network disruption underlying emotional and mood dysregulation in psychiatric disorders(simmons et al.,2024).Diverse sets of distinct molecular signaling pathways converge on the synapse to regulate synaptogenesis,synaptic function,and synaptic plasticity in brain regions and circuits through complex interactions organized by numerous multivalent protein scaffolds,including the family of proteins known as A-kinase anchoring proteins(AKAPs).

关键词： function supporting

Getting physical with medical education:Exercise based virtual anatomy review classes for medical students

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World Journal of Methodology 2025年第1期15卷 20-25页

作者： Nadeesha R samarasinghe Taniya s Nagpal Michele l Barbeau Charys M Martin Division of General surgery Faculty of MedicineUniversity of British ColumbiaVancouver V6T 1Z3BCCanada Faculty of Kinesiology Sport and RecreationUniversity of AlbertaEdmonton T6G 2R3ABCanada Anatomy and Cell Biology University of Western OntarioLondon N6A 3K7ONCanada Department of Anatomy and Cell Biology Schulich School of Medicine and DentistryThe University of Western OntarioLondon N6A 3K7ONCanada

The benefits of regular physical activity are well ***,few studies have examined the effectiveness of integrating physical activity(PA)into curricula within a post-secondary *** investigate the incorporation of PA into medical curriculum,we developed a series of optional exercise-based review sessions designed to reinforce musculoskeletal(MsK)anatomy course *** synchronous sessions were co-taught by a group fitness instructor and an anatomy *** fitness instructor would lead students through both strength and yoga style exercises,while the anatomy instructor asked questions about relevant anatomical structures related to course material previously *** the sessions,participants were asked to evaluate the classes on their self-reported exam preparedness in improving MsK anatomy knowledge,PA levels,and mental *** participants completed surveys;a majority agreed that the classes increased understanding of MsK concepts(90.0%)and activity levels(97.7%).Many(70.0%)felt that the classes helped reduce *** majority of respondents(90.0%)agreed that the classes contributed to increased feelings of social ***,medical students saw benefit in PA based interventions to supplement MsK course *** with increasing activity levels and promoting health behaviours,integrating PA into medical curriculum may improve comprehension of learning material,alleviate stress and foster social connectivity among medical students.

关键词： Medical education Musculoskeletal Anatomy Exercise Online learning

Tracking synchronization of Networked lagrangian systems via Impulsive Control and Its Applications

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Journal of systems science & Complexity 2019年第4期32卷 1093-1103页

作者： she Weiqiang MA Mihua Department of Public Teaching Zhangzhou Institute of TechnologyZhangzhou 363000China school of Mathematics and statistics Minnan Normal UniversityZhangzhou 363000China

An impulsive control scheme is proposed to investigate the tracking synchronization of ring and inline networked lagrangian *** a time-varying target trajectory,some algebraic synchronization criteria are derived to make the networked lagrangian systems synchronize to the target trajectory.A distinctive feature of the proposed work is that the impulsive control scheme is used to investigate the highly nonlinear lagrangian *** the impulsive control,each agent described by the lagrangian system instantaneously interacts with its neighbors only at some discrete ***,the proposed control strategy requires only local coupling feedback for global *** a direct application of the obtained theoretical results,the tracking synchronization of multiple 3-DOF mobile robots is discussed in detail and *** results verify the effectiveness of the proposed control strategy.

关键词： Impulsive control mobile robots networked lagrangian systems tracking synchronization

Kepler's third law of n-body system

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science China(Physics,Mechanics & Astronomy) 2018年第9期61卷 107-108页

作者： Zhen-su she Department of Mechanics and Engineering science Peking University

Newton＇s gravitational law and its derived Kapler＇s orbit of planetary motions are the very first triumph of science, which confirms that a purely human＇s invention of mathematics is able to accurately describe observations in nature. For the past three centuries, the frontier of science has moved to almost all areas of human experience, yet some basic problem in celestial mechanics has remained unsolved, despite the effort of many great minds like Newton （1687）, Euler （1760） and lagrange （1776）, among others.

关键词：法律开普勒 lagrange 系统身体 Euler 牛顿科学

Thermal stability of AlD lanthanum Aluminate Thin Films on si(100)

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Journal of Materials science & Technology 2014年第4期30卷 347-352页

作者： Xiaofeng she Hongtao Wang Institute of Applied Mechanics Zhejiang University

The thermal stability of high-K dielectrics on si is critical in avoiding the malfunction of metal oxide field effect transistors （MOsFET） in devices. series of annealing experiments have been performed to investigate the thermal stability of atomic layer deposited （AlD） lanthanum aluminate （lAO） thin films, a promising amorphous high-K candidate. The abrupt interface between lAO and si remains intact at temperatures below 600 ℃. Above this temperature, a siO2-rich interfacial layer begins to appear and thickens at higher temperatures. At 900 ℃, the interface is roughened due to the formation of nano sized crystal nuclei above the interfacial layer, which indicates the interfacial reactions with the si substrate. The thermal stability of AlD AI203 thin films on si have also been studied under similar conditions. The AI203/si interface retains its smoothness even after full crystallization. This comparison suggests that the rare earth element may catalyze the interfacial reactions. Further annealing experiments on lAO films with different thickness end with a capping layer show that the oxygen source of the interfacial layer mainly comes from the AlD oxide films.

关键词： Thermal stability High-K dielectric Atomic layer deposition lanthanum aluminate

Mechanism of methanol decomposition on the Pd/WC(0001) surface unveiled by first-principles calculations

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Frontiers of Chemical science and Engineering 2020年第6期14卷 1052-1064页

作者： Jinhua Zhang Yuanbin she College of Chemical Engineering Zhejiang University of TechnologyHangzhou 310014China school of Materials and Environmental Engineering Chizhou UniversityChizhou 247000China

In this study,the decomposition of methanol into the CO and H species on the Pd/tungsten carbide(WC)(0001)surface is systematically investigated using periodic density functional theory(DFT)*** possible reaction pathways and intermediates are *** results reveal that saturated molecules,i.e.,methanol and formaldehyde,adsorb weakly on the Pd/WC(0001)*** CO and H prefer three-fold sites,with adsorption energies of-1.51 and-2.67 eV,*** the other hand,CH30 stably binds at three-fold and bridge sites,with an adsorption energy of-2.58 ***,most of the other intermediates tend to adsorb to the surface with the carbon and oxygen atoms in their sp3 and hydroxyl-like configurations,***,the Catom of CH2OH preferentially attaches to the top sites,CHOH and CH2O adsorb at the bridge sites,while COH and CHO occupy the three-fold *** DFT calculations indicate that the rupture of the initial C-H bond promotes the decomposition of CH3OH and CH2OH,whereas in the case of CHOH,O-H bond scission is favored over the C-H bond ***,the most probable methanol decomposition pathway on the Pd/WC(0001)surface is CH3OH→ CH2OH→trans-CUOH→CHO→*** present study demonstrates that the synergistic effect of WC(as carrier)and Pd(as catalyst)alters the CH3OH decomposition pathway and reduces the noble metal utilization.

关键词： density functional theory methanol direct methanol fuel cells WC(0001)-supported Pd monolayer decomposition mechanism

Fast consensus seeking for multi-agent systems

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Journal of systems Engineering and Electronics 2011年第3期22卷 534-539页

作者： Yingying she Huajing Fang Department of Control science and Engineering Huazhong University of Science and TechnologyWuhan 430074P.R.China

For multi-agent systems based on the local information,the agents automatically converge to a common consensus state and the convergence speed is determined by the algebraic connectivity of the communication *** study fast consensus seeking problems of multi-agent systems in undirected networks,a consensus protocol is proposed which considers the average information of the agents＇ states in a certain time interval,and a consensus convergence criterion for the system is *** on the frequency-domain analysis and algebra graph theory,it is shown that if the time interval is chosen properly,then requiring the same maximum control effort the proposed protocol reaches consensus faster than the standard consensus *** are provided to demonstrate the effectiveness of these theoretical results.

关键词： multi-agent systems consensus cooperative control convergence rate.

Analytic derivation of Monin-Obukhov similarity function for open atmospheric surface layer

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science China(Physics,Mechanics & Astronomy) 2021年第3期64卷 73-83页

作者： Yong Ji Zhen-su she state Key laboratory for Turbulence and Complex systems and Department of Mechanics and Engineering science College of EngineeringPeking UniversityBeijing100871China

The Monin-Obukhov(MO)similarity functionφm of the atmospheric surface layer(Asl)describing the deviation from the log law of the canonical turbulent boundary layer because of thermal stratification has been traditionally determined *** study presents a unified analytic expression derived from a symmetry-based theory of wall turbulence,called structural ensemble dynamics(sED),which postulates a generalized dilation symmetry principle expressing the effect of the wall on turbulence,leading to an analytic multi-regimes expression for the mixing *** Asl in unstable and stable conditions(i.e.,UC and sC),a unified two-regime formula of the mixing length is proposed,leading to aφm,similar to the Businger-Dyer(BD)formula;with a simplified model energy balance equation,φm is completely specified with no free ***,the theory allows the study of the open Asl’s underlying additional physical processes such as bottom-up or top-down flux due to pressure variations *** that Tp is decomposed into shear-like and buoyancy-like components,we propose new explanations for two important features of typical Asl:a significantly smaller Karman constant of 0.36 and a varyingφm for sC mean speed *** theory is validated by the data obtained at Kansas and also at Qingtu lake Observation Array in Northern China for a variety of heat flux *** conclusion,due to pressure variations,we assert that Asl is intrinsically open and that the current theory offers a new basis for its quantification.

关键词： Monin-Obukhov similarity theory open atmospheric surface layer boundary layer turbulence symmetry-based analysis