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简介：Nonlinearconsensusprotocolsfordynamicdirectednetworksofmulti-agentsystemswithfixedandswitchingtopologiesareinvestigatedseparatelyinthispaper.Basedonthecentremanifoldreductiontechnique,nonlinearconsensusprotocolsarepresented.Weprovethatagroupofagentscanreachaβ-consensus,thevalueofwhichisthegroupdecisionvaluevaryingfromtheminimumandthemaximumvaluesoftheinitialstatesoftheagents.Moreover,wederivetheconditionstoguaranteethatalltheagentsreachaβ-consensusonadesiredgroupdecisionvalue.Finally,asimulationstudyconcerningtheverticalalignmentmanoeuvereofateamofunmannedairvehiclesisperformed.Simulationresultsshowthatthenonlinearconsensusprotocolsproposedaremoreeffectivethanthelinearprotocolsfortheformationcontroloftheagentsandtheyareanimprovementoverexistingprotocols.

简介：由于在自动谈判中加入辩论成分能够允许Agent在谈判过程中通过辩论的形式交换和交流额外的信息,进而影响对方的信念、偏好、意向或目标,使谈判向着有利于达成协议方向发展,并提高谈判效率,降低交易成本,因此已经成为多Agent商务谈判领域的热点发展方向。本文针对如何产生辩论这一重要问题进行研究,提出了＂候选辩论集的产生策略＂和＂基于冲突分析的辩论目标产生模型＂,分析了基于辩论的多Agent商务谈判决策过程,并通过原型系统进行了验证。本文的研究成果将促使多Agent商务谈判系统向着更为实用方向发展。

简介：Aprototypesystemforagent-baseddistributeddynamicservicesthatwillbeappliedtothedevelopmentofDataGridsforhigh-energyphysicsispresented.Theagent-basedsystemswearedesigninganddevelogpinggather,disseminateandcoordinateconfiguration,time-dependentstateandotherinformationintheGridsystemasawhole.Thesesystemsarebeingdevelopedasanenablingtechnologyforworkflow-managementandotherformsofend-to-endGridsystemmonitoringandmanagement.ThisprototypeisbeingdevelopedinJavaandisbasedontheJINI,MobileAgents,Self-OrganizingNeuralNetworks.

简介：Polymercoatedquartzcrystalmicrobalance(QCM)sensorbasedonthefrequencyshiftsduetotheadsorptionofcompoundsatthesurfaceofmodifiedquartzcrystalelectrodeisaneffectivemethodfordetectionofsarin(GB)whichisahighlytoxicnervewarfareagent.Anewfluorosiloxanepolymerhasbeensynthesizedthrough6stepsfromtrifluoromethylbenzene.Thesynthesiswasachievedfromtrifluoromethylbenzenethroughnitration,hydrogenation.Theobtainedm-nitrotrifluoromethylanilinewastreatedwithNaNO2,andthenhydrolyzedtom-nitrotrifluoromethylphenol.m-nitrotrifluoromethylphenolwasreactedwithallylbromidetotheetherproduct.TheproductwasrearrangedbyClaisenrearrangement,andthenreactedwithpolymethylhydrosiloxaneundercatalystofPt/DVTMS.Thefluorosiloxanepolymercanbeobtained.ThepolymerhasbeensuccessfullyusedasQCMcoatingmaterial.

简介：在Biham等人提出的二维元胞自动机交通流模型基础上,建立了基于agent的二维元胞自动机城市交通流模型,该模型考虑了对外交通对城市交通流的影响。模拟了在存在对外交通概率情况下路网的结构对城市交通的影响.结果表明,较小的对外交通概率就会对城市交通状况产生较大的影响,在一定条件下适当增加中心车站的数量对城市交通状况有所改善。

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简介：NowadaysComputationalFluidDynamics(CFD)softwareisadoptedasadesignandanalysistoolinagreatnumberofengineeringfields.Wecansaythatsingle-physicsCFDhasbeensufficientlymaturedinthepracticalpointofview.ThemaintargetofexistingCFDsoftwareissingle-phaseflowssuchaswaterandair.However,manymulti-physicsproblemsexistinengineering.Mostofthemconsistofflowandotherphysics,andtheinteractionsbetweendifferentphysicsareveryimportant.Obviously,multi-physicsphenomenaarecriticalindevelopingmachinesandprocesses.Amulti-physicsphenomenonseemstobeverycomplex,anditissodifficulttobepredictedbyaddingotherphysicstoflowphenomenon.Therefore,multi-physicsCFDtechniquesarestillunderresearchanddevelopment.Thiswouldbecausedfromthefactsthatprocessingspeedofcurrentcomputersisnotfastenoughforconductingamulti-physicssimulation,andfurthermorephysicalmodelsexceptforflowphysicshavenotbeensuitablyestablished.Therefore,innearfuture,wehavetodevelopvariousphysicalmodelsandefficientCFDtechniques,inordertosuccessmulti-physicssimulationsinengineering.Inthepresentpaper,Iwilldescribethepresentstatesofmulti-physicsCFDsimulations,andthenshowsomenumericalresultssuchasiceaccretionandelectro-chemicalmachiningprocessofathree-dimensionalcompressorbladewhichwereobtainedinmylaboratory.Multi-physicsCFDsimulationswouldbeakeytechnologyinnearfuture.

简介：让n和k(n≥k>1)是二个非否定的整数。n顶点上的k-multi-hypertournament是对(V，一)，在V是有|V的一套顶点的地方|=n，和A是顶点的一套k元组，为V的任何k子集S叫了弧，A包含至少一个(至多k!)k！其条目属于S的k元组。为是某k-multi-hypertournament的外面度顺序(在里面度顺序)的非否定的整数的一个不减少的序列的必要、足够的条件被给。

简介：DNAcondensationisanimportantprocessinmanyfieldsincludinglifesciences,polymerphysics,andappliedtechnology.Inthenucleus,DNAiscondensedintochromosomes.Inpolymerphysics,DNAistreatedasasemi-flexiblemoleculeandapolyelectrolyte.Manyagents,includingmulti-valentcations,surfactants,andneutralpoorsolvents,cancauseDNAcondensation,alsoreferredtoascoil–globuletransition.Moreover,DNAcondensationhasbeenusedforextractionandgenedeliveryinappliedtechnology.ManyphysicaltheorieshavebeenpresentedtoelucidatethemechanismunderlyingDNAcondensation,includingthecounterioncorrelationtheory,theelectrostaticzippertheory,andthehydrationforcetheory.Recentlyseveralsingle-moleculestudieshavefocusedonDNAcondensation,sheddingnewlightonoldconcepts.Inthisdocument,themulti-fieldconceptsandtheoriesrelatedtoDNAcondensationareintroducedandclarifiedaswellastheadvancesandconsiderationsofsingle-moleculeDNAcondensationexperimentsareintroduced.

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简介：题目：一种多振子超声电机的设计目的：对超声电机而言，当多个压电振子并联时，由于以同一设计方案制作的电机振子往往具有不同的动态特性，因此会使得多振子电机的效率有所下降。即多振子电机工作的关键是如何使多个振子协同一致地驱动转子。为提高集成型多振子电机的效率和简化电机结构，提出一种构造贴片式多振子旋转超声电机的方法。创新点：1．提出圆周面内驱动的概念，发展已有的面内驱动概念（x-y面）；2．提出一种模态转换方法，通过多个振子弯曲振动的叠加形成设计电机的扭转振动；3．电机工作时，不仅各个振子处于共振状态，而且连接而成的定子同样处于共振状态，有利于提高电机的效率；4．验证多振子同步驱动的机理。方法：1．振子采用贴片式结构，由极化方向沿厚度方向的压电陶瓷和金属基体粘结而成；与使用兰杰文振子相比，使用贴片式振子易于简化电机的结构。2．各个振子首尾相连形成电机的定子，既可用于构造直线电机，又可转换成旋转电机。3．通过有限元方法对不同振子数构成的电机定子进行性能比较，并且分析设计电机的驱动机理；此外，通过仿真分析确定电机的最优尺寸。4．根据设计结果，加工原理样机，并且对加工的样机进行实验研究，探讨设计方法的可行性。结论：1．根据仿真分析结果，最终加工的电机定子包含5个振子。2．定子中各个振子的振动特性完全相同，振子同步工作。3．样机定子的内径为28mm，外径为35mm，高为30min；测得定子的纵振和扭转频率分别为44．42kHz和43．83kHz；当激励电压的频率为43．9kHz、峰值为100V时，电机的空载转速为45r／min，堵转力矩为0．3N·m，最大效率约为30％。4．本文所设计的电机，是一种多振子并行驱动的整体式电机，具有结构紧凑和多�

简介：在这份报纸，我们在存在上解决一个问题结合线性多步方法(LMSM)的symplecticity，否定结果被获得。[从作者抽象]

简介：Bymeansoffirst-principlesdensityfunctionaltheory(DFT)calculationsandmoleculardynamics(MD)simulations,aseriesofcoronalmulti-walledsiliconnanotubes(MWSiNTs)withoutorwithhydrogenterminationsaresystematicallyidentified.Notably,coronalMWSiNTs,wheretheinteractionbetweenthewallsispreferablethroughcovalentbondsratherthanweakinteraction,showbetterstabilitythanCNT-likeSiNTs.Moreover,theyexhibitgoodelasticitywithsmallYoung’smodulus.Theinvestigationoftheelectronicstructuredemonstratesthattheypresentmetalliccharacteristics,whichisinstrikingcontrasttobulksilicon.Thus,theMWSiNTsmayfindimportantapplicationsinelectronicdevices.

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简介：Amild,regioselective1,3-dipolarcycloadditionprotocolforthepreparationofphenylselenomethylisoxazolinesthroughsubstitutedallylphenylselenidesandnitrileoxideswasreported.

简介：Thehumancardiovascularsystemisaclosedloopandcomplexvascularnetworkwithmulti-scaledheterogeneoushemodynamicphenomena.Here,wegiveaselectivereviewofrecentprogressinmacro-hemodynamicmodeling,withafocusongeometricalmulti-scalemodelingofthevascularnetwork,micro-hemodynamicmodelingofmicrocirculation,aswellasbloodcellular,subcellular,endothelialbiomechanics,andtheirinteractionwitharterialvesselmechanics.Wedescribeindetailthemethodologyofhemodynamicmodelinganditspotentialapplicationsincardiovascularresearchandclinicalpractice.Inaddition,wepresentmajortopicsforfuturestudy:recentprogressofpatient-specifihemodynamicmodelinginclinicalapplications,micro-hemodynamicmodelingincapillariesandbloodcells,andtheimportanceandpotentialofthemulti-scalehemodynamicmodeling.

简介：Atheoreticalinvestigationiscarriedouttostudytheexistence,formationandbasicpropertiesofionacoustic(IA)doublelayers(DLs)inamagnetizedbi-ionplasmaconsistingofwarm/coldionsandBoltzmanndistributedelectrons.Basedonthereductiveperturbationtechnique,anextendedKortewegde-Vries(KdV)equationisderived.Thepropagationoftwopossiblemodes(fastandslow),andtheirevolutionareinvestigated.Theeffectsofobhqueness,magnitudeofthemagneticfield,ionconcentration,polarityofions,andiontemperatureontheIADLprofileareanalyzed,andthentherangesofparametersforwhichtheIADLsexistareinvestigatedindetails.