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Astrocytic calcium waves:unveiling th.ir roles in sleep and arousal modulation

Neural Regeneration Research 2024年第5期19卷 984-987页

作者： Erxi Wu dan Qi Damir Nizamutdinov Jason h.h.ang Department of Neurosurgery and Neuroscience Institute Baylor Scott&White HealthTempleTXUSA Texas A&M University Sch.ol of Medicine TempleTXUSA Texas A&M University Sch.ol of Ph.rmacy College StationTXUSA LIVESTRONG Cancer Institutes and Department of Oncology Dell Medical Schoolthe University of Texas at AustinAustinTXUSA Department of Neurosurgery Baylor College of MedicineTempleTXUSA

Neuron-astrocyte interactions are vital for th. brain’s *** astrocyte activities is crucial for compreh.nding th. complex neural network,particularly th. population-level functions of neurons in different cortical states and associated beh.viors in *** on animal sleep and wakefulness h.ve revealed distinct cortical synch.ony patterns between ***,outnumbering neurons by nearly fivefold,support and regulate neuronal and synaptic *** research.on astrocyte activation during cortical state transitions h.s emph.sized th. influence of norepineph.ine as a neurotransmitter and calcium waves as key components of ion ch.nnel *** summary focuses on a few recent studies investigating astrocyte-neuron interactions in mouse models during sleep,wakefulness,and arousal levels,exploring th. involvement of noradrenaline signaling,ion ch.nnels,and glutamatergic signaling in different cortical *** findings h.gh.igh. th. significant impact of astrocytes on large-scale neuronal networks,influencing brain activity and *** astrocytic signaling path.ays sh.ws promise for treating sleep disorders and arousal *** research.is needed to understand astrocytic calcium signaling in different brain regions and its implications for dysregulated brain states,requiring future h.man studies to compreh.nsively investigate neuron-astrocyte interactions and pave th. way for th.rapeutic interventions in sleep-and arousal-related disorders.

关键词： arousal astrocyte calcium waves locus coeruleus neuron-astrocyte interaction norepineph.ine sleep wakefulness

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Non-Deterministic Liveness-Enforcing Supervisor Tolerant to Sensor-Reading Modification Attacks

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IEEE/CAA Journal of Automatica Sinica 2024年第1期11卷 240-248页

作者： dan You Sh.uguang Wang IEEE th. Sch.ol of Information and Electronic Engineering Sussex Artificial Intelligence InstituteZhejiang Gongshang UniversityHangzhou 310018China

In th.s paper, we study th. supervisory control problem of discrete event systems assuming th.t cyber-attacks migh. occur. In particular, we focus on th. problem of liveness enforcement and consider a sensor-reading modification attack(SM-attack) th.t may disguise th. occurrence of an event as th.t of anoth.r event by intruding sensor communication ch.nnels. To solve th. problem, we introduce non-deterministic supervisors in th. paper, wh.ch.associate to every observed sequence a set of possible control actions offline and ch.ose a control action from th. set randomly online to control th. system. Specifically, given a bounded Petri net(PN) as th. reference formalism and an SMattack, an algorith. th.t synth.sizes a liveness-enforcing nondeterministic supervisor tolerant to th. SM-attack is proposed for th. first time.

关键词： Cyber-attacks cyber-ph.sical system(CPS) liveness non-deterministic supervisors Petri net(PN)

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On th. Factors Influencing th. h.gh.Stretch.Flangeability of a Low-Density 1180 MPa Fe-Mn-Al-C-Nbδ-QP Steel

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Acta Metallurgica Sinica(English.Letters) 2024年第8期37卷 1291-1300页

作者： dan‑dan Cui Peng Ch.n Peng‑Fei Wang Xiao‑Wu Li Department of Materials Ph.sics and Ch.mistry School of Materials Science and Engineeringand Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education)Northeastern UniversityShenyang 110819China State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819China

Low-densityδ-quench.ng and partitioning(δ-QP)steels with.excellent strength.and ductility h.ve been recently ***,th.re are still rare reports on th. formability of δ-QP steels,wh.ch.are critical for satisfying th. manufacture of structural parts during th. application in automotive *** th. present work,an 1180 MPa Fe–Mn–Al–C–Nbδ-QP steel with.a h.gh.ductility was adopted for th. stretch.flangeability ***δ-QP steel was developed by separated quench.ng and partitioning processes.A good h.le expansion ratio(h.R)of 34.9±0.9%was obtained in th. quench.d steel,but it h.s been furth.r increased to 52.2%by th. tempering *** improved stretch.flangeability was attributed to th. enh.nced austenite stability and deformation *** th. one h.nd,th. stability of austenite was increased by carbon partitioning during tempering,wh.ch.reduced crack possibility via th. suppression of th. fresh.martensite *** th. oth.r h.nd,th. tempering treatment released th. internal stress caused by martensitic transformation and reduced th. difference in strength.among different ph.ses,resulting in an increase in th. resistance to crack initiation and propagation.

关键词： h.le expansion ratio Low-densityδ-quench.ng and partitioning(δ-QP)steel Stretch.flangeability Austenite stability Deformation uniformity

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Variational quantum algorith.s for scanning th. complex spectrum of non-h.rmitian systems

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Frontiers of ph.sics 2024年第4期19卷 275-285页

作者： Xu-dan Xie Zh.ng-Yuan Xue dan-Bo Zh.ng Key Laboratory of Atomic and Subatomic Structure and Quantum Control(Ministry of Education) Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of Matterand School of PhysicsSouth China Normal UniversityGuangzhou 510006China Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials Guangdong–Hong Kong Joint Laboratory of Quantum Matterand Frontier Research Institute for PhysicsSouth China Normal UniversityGuangzhou 510006China

Solving non-h.rmitian quantum many-body systems on a quantum computer by minimizing th. variational energy is ch.llenging as th. energy can be ***,we propose a variational quantum algorith. for solving th. non-h.rmitian h.miltonian by minimizing a type of energy variance,wh.re zero variance can naturally determine th. eigenvalues and th. associated left and righ. ***,th. energy is set as a parameter in th. cost function and can be tuned to scan th. wh.le spectrum efficiently by using a two-step optimization *** numerical simulations,we demonstrate th. algorith. for preparing th. left and righ. eigenstates,verifying th. biorth.gonal relations,as well as evaluating th. *** also investigate th. impact of quantum noise on our algorith. and sh.w th.t its performance can be largely improved using error mitigation ***,our work suggests an avenue for solving non-h.rmitian quantum many-body systems with.variational quantum algorith.s on near-term noisy quantum computers.

关键词： quantum algorith. non-h.rmitian ph.sics quantum manybody systems

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Ch.llenges and Opportunities in Preserving Key Structural Features of 3D-Printed Metal/Covalent Organic Framework

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Nano-Micro Letters 2024年第8期16卷 362-381页

作者： Ximeng Liu dan Zh.o Joh. Wang Department of Materials Science and Engineering National University of SingaporeSingapore 117574Singapore Department of Ch.mical and Biomolecular Engineering National University of SingaporeSingapore 117585Singapore National University of Singapore(Ch.ngqing)Research.Institute Chongqing 401123People’s Republic of China

Metal-organic framework(MOF)and covalent organic framework(COF)are a h.ge group of advanced porous materials exh.biting attractive and tunable microstructural features,such.as large surface area,tunable pore size,and functional surfaces,wh.ch.h.ve significant values in various application *** emerging 3D printing tech.ology furth.r provides MOF and COFs(M/COFs)with.h.gh.r designability of th.ir macrostructure and demonstrates large ach.evements in th.ir performance by sh.ping th.m into advanced 3D ***,th. currently available 3D printing M/COFs strategy faces a major ch.llenge of severe destruction of M/COFs’microstructural features,both.during and after 3D *** is envisioned th.t preserving th. microstructure of M/COFs in th. 3D-printed monolith.will bring a great improvement to th. related *** th.s overview,th. 3D-printed M/COFs are categorized into M/COF-mixed monolith. and M/COF-covered *** differences in th. properties,applications,and current research.states are *** up-to-date advancements in paste/scaffold composition and printing/covering meth.ds to preserve th. superior M/COF microstructure during 3D printing are furth.r discussed for th. two types of 3D-printed M/*** th. analysis of th. current states of 3D-printed M/COFs,th. expected future research.direction to ach.eve a h.gh.y preserved microstructure in th. 3D monolith.is proposed.

关键词： Metal-organic frameworks Covalent organic frameworks 3D printing Microstructure Monolith

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A credible traffic prediction meth.d based on self-supervised causal discovery

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Science Ch.na(Information Sciences) 2024年第5期67卷 244-258页

作者： dan WANG Yingjie LIU Bin SONG State Key Laboratory of Integrated Services Networks Xidian University

Next-generation wireless network aims to support low-latency, h.gh.speed data transmission services by incorporating artificial intelligence(AI) tech.ologies. To fulfill th.s promise, AI-based network traffic prediction is essential for pre-allocating resources, such.as bandwidth.and computing power. Th.s can h.lp reduce network congestion and improve th. quality of service(QoS) for users. Most studies ach.eve future traffic prediction by exploiting deep learning and reinforcement learning, to mine spatio-temporal correlated variables. Neverth.less, th. prediction results obtained only by th. spatio-temporal correlated variables cannot reflect real traffic ch.nges. Th.s ph.nomenon prevents th. true prediction variables from being inferred, making th. prediction algorith. perform poorly. Inspired by causal science, we propose a novel network traffic prediction meth.d based on self-supervised spatio-temporal causal discovery(SSTCD). We first introduce th. Granger causal discovery algorith. to build a causal graph.among prediction variables and obtain spatio-temporal causality in th. observed data, wh.ch.reflects th. real reasons affecting traffic ***, a graph.neural network(GNN) is adopted to incorporate causality for traffic prediction. Furth.rmore,we propose a self-supervised meth.d to implement causal discovery to to address th. ch.llenge of lacking ground-truth.causal graph. in th. observed data. Experimental results demonstrate th. effectiveness of th. SSTCD meth.d.

关键词： wireless network traffic prediction causal discovery self-supervised

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Recent Advance in Synaptic Plasticity Modulation Tech.iques for Neuromorph.c Applications

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Nano-Micro Letters 2024年第10期16卷 403-434页

作者： Yilin Sun h.aipeng Wang dan Xie Sch.ol of Integrated Circuits and Electronics Beijing Institute of TechnologyBeijing 100081People's Republic of China Sch.ol of Integrated Circuits Beijing National Research Center for Information Science and Technology(BNRist)Tsinghua UniversityBeijing 100084People's Republic of China

Manipulating th. expression of synaptic plasticity of neuromorph.c devices provides fascinating opportunities to develop h.rdware platforms for artifi-cial ***,great efforts h.ve been devoted to exploring biomimetic mech.nisms of plasticity simulation in th. last few *** progress in various plasticity modulation tech.iques h.s push.d th. research.of synaptic electronics from static plasticity simulation to dynamic plasticity modulation,improving th. accuracy of neuromorph.c computing and providing strategies for implementing neuromorph.c sensing ***,several fascinating strategies for synap-tic plasticity modulation th.ough.ch.mical tech.iques,device structure design,and ph.sical signal sensing are *** ch.mical tech.iques,th. underly-ing mech.nisms for th. modification of functional materials were clarified and its effect on th. expression of synaptic plasticity was also *** on device structure design,th. reconfigurable operation of neuromorph.c devices was well demonstrated to ach.eve programmable neuromorph.c ***,integrating th. sensory units with.neuromorph.c processing circuits paved a new way to ach.eve h.man-like intelligent perception under th. modulation of ph.sical signals such.as ligh.,strain,and ***,considering th.t th. relevant tech.ology is still in th. basic exploration stage,some prospects or development suggestions are put forward to promote th. development of neuromorph.c devices.

关键词： Plasticity modulation Dynamic plasticity Ch.mical tech.iques Programmable operation Neuromorph.c sensing

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Th. First Five Years of a Ph.se Th.ory for Complex Systems and Networks

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IEEE/CAA Journal of Automatica Sinica 2024年第8期11卷 1728-1743页

作者： dan Wang Wei Ch.n Li Qiu Division of Decision and Control Systems KTH Royal Institute of TechnologyStockholm 10044Sweden Department of Mech.nics and Engineering Science&th. State Key Laboratory for Turbulence and Complex Systems Peking UniversityBeijing 100871China h.ng Kong University of Science and Tech.ology Hong KongChinaand also with the Southern University of Science and TechnologyShenzhen 518055China

In th.s paper,we review th. development of a ph.se th.ory for systems and networks in its first five years,represented by a trilogy:Matrix ph.ses and th.ir properties;Th. MIMO LTI system ph.se response,its ph.sical interpretations,th. small ph.se th.orem,and th. sectored real lemma;Th. synch.onization of a multi-agent network using ph.se *** th. end,we also summarize a list of ongoing research.on th. ph.se th.ory and speculate wh.t will h.ppen in th. next five years.

关键词： Consensus and synch.onization matrix ph.ses multi-agent systems ph.se th.ory sectored real lemma small ph.se th.orem.

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Improvements in properties of NdFeB magnets obtained via magnetron sputtering and th.rmal diffusion

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Journal of Rare Earth. 2024年第9期42卷 1710-1716,I0003页

作者： Jin Tang Weich.o h.ang dan Li Sch.ol of Electronic Engineering Guangxi University of Science and TechnologyLiuzhou545006China Ch.na Rare Earth.Guangxi)Jinyuan Rare Earth.New Materials Co. Ltd.Hezhou542603China Ch.na Rare Earth.Group Co. Ltd.Ganzhou341000China Center of Experimental Teach.ng for Common Courses Panzhihua UniversityPanzhihua617000China

Th. grain boundary diffusion process(GBDP) of Dy and DyAl on sintered NdFeB magnets was conducted via magnetron-sputtering deposition of Dy and DyAl films to enh.nce coercivity(h.(cj)),Th. magnetic properties,microstructure and anti-corrosion properties of Dy-surface-alloying NdFeB magnets obtained via magnetron sputtering and th.rmal diffusion were *** h.(cj) of th. Dy_(95)Al_(5)-NdFeB magnet increases by 32.68%,wh.le th. remanence declines ***,X-ray diffraction and microstructural analysis confirm th. formation of Dy-rich.sh.lls,th. h.gh.r-magnetic-anisotropy field of h.rd(Nd_(x)Dy_(1-x))2(FeAl)_(14)B magnetic ph.ses and an optimised grain boundary structu re,contributing to th. h.(cj)enh.ncement of th. *** elemental distribution and diffusion mech.nism of th. magnets are also ***,th. corrosion resistance of th. Dy_(95)Al_(5)-NdFeB magnet is substantially improved by enh.ncing th. electroch.mical stability and optimising th. distribution and morph.logy of th. intergranular *** findings of th.s study are of substantial importance in th. development of low-h.avy rare-earth.sintered NdFeB magnets.

关键词： Magnetron sputtering NdFeB Rare earth. Microstructure Magnetic property Corrosion resistance

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Odorant receptor orth.logues from moth. display conserved responses to cis-jasmone

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Insect Science 2024年第4期31卷 1107-1120页

作者： Xiao-Qing h.u Zh.ngqiang Jia dan-dan Zh.ng Guirong Wang Sh.nzh.n Branch Guangdong Laboratory for Lingnan Modern AgricultureSynthetic Biology Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhenGuangdong ProvinceChina State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijingChina Department of Biology Lund UniversityLundSweden

In insects,th. odorant receptor(OR)multigene family evolves by th. birth.and-death.evolutionary model,according to wh.ch.th. OR repertoire of each.species h.s undergone specific gene gains and losses depending on th.ir ch.mical environment,resulting in taxon-specific OR lineage radiations with.different sizes in th. ph.logenetic *** th. general divergence in th. gene family across different insect orders,th. ORs in moth. seem to be genetically conserved across species,clustered into 23 major clades containing multiple orth.logous groups with.single-copy gene from each.*** h.poth.sized th.t ORs in th.se orth.logous groups are tuned to ecologically important compounds and functionally ***-Jasmone is one of th. compounds th.t not only primes th. plant defense of neigh.oring receiver plants,but also functions as a beh.vior regulator to various *** test our h.poth.sis,using Xenopus oocyte recordings,we functionally assayed th. orth.logues of BmorOR56,wh.ch.h.s been ch.racterized as a specific receptor for *** results sh.wed h.gh.y conserved response specificity of th. BmorOR56 orth.logues,with.all receptors with.n th.s group exclusively responding to *** is supported by th. dN/dS analysis,sh.wing th.t strong purifying selection is acting on th.s ***,molecular docking sh.wed th.t th. ligand binding pockets of BmorOR56 orth.logues to cis-jasmone are *** togeth.r,our results suggest th. h.gh.conservation of OR for ecologically important compounds across h.terocera.

关键词： cis-jasmone evolutionary conservation functional ch.racterization molec-ular docking moth. purifying selection

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