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71 个结果
  • 简介:Thinfilmsofpolymerblendscomposedofalternatingcopolymer,diblockcopolymerand/orhomopolymerarestudiedusingMonteCarlosimulation.Amultilayermorphologyisobservedinthefilm,thatis,theblendedpolymersassembleintoindividualdomainsarrangedfrominteriortothesurfacesofthefilm.Thecoexistingcomponentsresidingthroughouttheneighboringdomainsinthefilmmakenodistinguishableinterfacebetweenanyneighboringdomains.Bythismeans,itformsaverticalcompositiongradientinthepolymericfilm.Beingdifferentfromlayer-by-layerdepositionofpolyelectrolyteorhydrogenbondingapproachetc.,thelayeredstructureinthisstudyisformedbypolymerblendinginonestep.Alternatingcopolymersarefoundtobeessentialcomponentstoformverticalcompositiongradient(layeredstructure)inthinfilms.

  • 标签: 聚合物薄膜 蒙地卡罗模拟 交替共聚物 蒙特卡洛仿真 成分梯度 层状结构
  • 简介:J/psi放射的腐烂为glueballsearch作为有希望的模式被建议。J/psi的完整的蒙特卡罗模拟>基于BESIII察觉者的设计,鲸鱼群妈希腊语字母的第七字希腊语字母的第七字和鲸鱼群妈希腊语字母的第七字eta'被执行学习在BESIII寻找可能的tensorglueball的敏感。

  • 标签: 胶子偶素 BESIII 模拟实验 物理学
  • 简介:StdHepC++[1]isaCLHEP[2]MonteCarloeventclasslibrarywhichprovidesacommoninterfacetoMonteCarloEventGenerators,ThisworkisanextensiveredesignoftheStdHepFortraninterfacetousethefullpowerofobjectorienteddesign,AgeneratedeventmapsnaturallyontotheDirectedAcyclicGraphconceptandwehaveusedtheHepMCclassestoimplementthis.Thefullimplementationallowstheusertocombineeventstosimulatebeampileupandaccessthemtransparentlyasthoughtheywereasingleevent.

  • 标签: MONTE Carlo传感器 标准事件分类 StdHepC++
  • 简介:Basedonthepreparativeexperimentsofthelight-emittingdiode(LED)encapsulant,threetypesofmonomermodelswithdifferentfunctionalgroupsarecarriedouttostudythepolymerizationprocessbydynamicMonteCarlo(DMC)simulationandbondfluctuationmodel(BFM).Wecalculatethedegreeofpolymerization,theradiusofgyrationandthefrequencyofvoidspherestodiscussthepolymerizationprocess,themolecularsizeandthespatialdistributionatdifferentvolumefractionsandproportions.OurresultsareinagreementwithGrest'sdecayrateandFlory'sscalelaw.Simulationsshowthatthepolymerizationprocessdependsontheappropriatevolumefractionandproportionexceedingly,andthevolumecontractioninthepolymerizationprocesscanalsobeobservedinthisstudy.Theseinvestigationscouldprovidesomeinsightsintotheunderstandingofthepolymerizationprocessoftheencapsulantandhelpustoadjusttheparametersinlaterexperiments.

  • 标签: Dynamic MONTE Carlo(DMC)simulation BOND FLUCTUATION model(BFM)
  • 简介:在实际中,经常会碰到这样的问题:对于给足的有限区间〔α,b〕上的连续函数f(χ)需要计算定积分∫b/af(x)dx的值。利用牛顿——莱不尼慈公式:∫b/af(x)dx=F(b)-F(a)仅仅能解决被积函数f(x)的原函数F(x)以初等函数的形式存在且容易求出的问题。但是,在大量的实际问题中,有许多被讨论的被积函数f(x)的原函数不能用初等函数的闭合形式表示,

  • 标签: 被积函数 Carlo MONTE 初等函数 数值积分 定积分
  • 简介:TheMonte-CarloArrayProcessor(MAP)hasbeendesignedusingcommodityofftheshelf(COTS)itemstoprovidetheCPUrequirementsoffulleventsimulationfortheLHCexperiments.Thesolutionishowevercompletelygeneral,soandCPUintensiveapplicationwithlimitedinputrequirementscanberunonthesystem.Operatingcontrolsoftwarehasbeenwrittentomanagethedataflowoiverthe100BaseTethernetconnectingthe300nodes(400MHzPII's)tothe6mastercontrolnodes700MHzPIII'seachwith500Gbofdisk),Upgradeto1000nodesisplkanned.Jobcontrolsoftwarethatallowstheusertorunthesamejobonallnodes,whilstallowingforsmalldifferencesininitialisationparametersbetweennodeshasalsobeenwritten.GMAPistheGRIDawareMAPcontrolsoftware,Thisallowsremotejobpreparationandsubmissionusingglobustoolkitforauthentificationandcommunication.ThesoftwarewillbeavailableandopensthepossibilityfordoingmassiveMonteCarloproductionoverseveralremoteMAPsitessimultaneously.

  • 标签: Monte-Carlo阵列 数据处理装置 GMAP
  • 简介:Tosharpentheimagingofstructures,itisvitaltodevelopaconvenientandefficientquantitativealgorithmoftheopticalcoherencetomography(OCT)sampling.InthispaperanewMonteCarlomodelissetupandhowlightpropagatesinbio-tissueisanalyzedinvirtueofmathematicsandphysicsequations.Therelations,inwhichlightintensityofClassIandClass2lightwithdifferentwavelengthschangeswiththeirpermeationdepth,andinwhichClassIlightintensity(signallightintensity)changeswiththeprobingdepth,andinwhichangularlyresolveddiffusereflectanceanddiffusetransmittancechangewiththeexitingangle,arestudied.TheresultsshowthatMonteCarlosimulationresultsareconsistentwiththetheorydata.

  • 标签: 光学 相干性 X射线层析成像 生物组织 数学物理方程 光子束
  • 简介:ThefundamentalelemetsoftheLHCbMonteCarloproductionsystemaredescribed,coveringsecurity,Jobsubmission,execution,datahandlingandbookkeeping,AnanalysisisgivenofthemainrequirementsforGRIDfacilities,togetherwithsomediscussionastohowtheGRIDcanenhancethissystem.AsummaryisgivenofthefirstexperiencesinmovingthesystemtoaGRIDenvironment.ThefirstplanningforinterfacingtheLHCbOOframeworktoGRIDservicesisoutlined.

  • 标签: 高能物理实验 LHCbMonteCarlo产生系统 GRID环境
  • 简介:Thispaperintroducestwokindsofmethodswithhighaccuracyforfi-niteelementprobabilitycomputingmethod,bywhichthefunctionvalueononeorafewnodescanbecalculatedwithoutformingthetotalstiffnessmatrix.

  • 标签: finite element mathematical EXPECTATION random WALK
  • 简介:顺序的蒙特卡罗模拟方法被介绍给对microgrid,和Weibuil分布的可靠性评价风速度模型被造模仿时时弯屈与一个二状态的可靠性模型相结合的一个特定的site.Wind汽轮机发电机模型的速度被用于蒙特卡罗模拟方法,并且结果证明风汽轮机可靠性与顺序的蒙特卡罗simulation.A为工作建模很好微煤气的汽轮机的二状态的可靠性模型和从IEEErelia的一个负担模型

  • 标签: 电网可靠性评估 蒙特卡罗仿真 蒙特卡罗模拟方法 序贯 WEIBULL分布 风力发电机组
  • 简介:Simulationmethodisanimportant-toolinfinancialriskmanagement.Itcansimulatefinancialvariableoreconomicwriableanddealwithnon-linearornon-nominalissue.Thispaperanalyzestheusageof"MonteCarlo"approachincommercialbankriskmanagement.

  • 标签: 商业银行 风险管理 蒙特卡罗模拟 管理体制
  • 简介:巴拿马内阁委员会批准了一项法律条例,允许美国德尔蒙食品有限公司(DelMonte)的跨国水果子公司——BanamoóadePanamaSA公司在Chiriqui和BocasdelToro省投资超过1亿美元用于香蕉生产。一旦投入运营,该公司将为巴拿马增加3100个直接就业岗位和12000个间接就业岗位。合同规定,公司将在7年内向Baru和Alanje地区、

  • 标签: 生产合同 香蕉生产 巴拿马 DEL 就业岗位 SA公司
  • 简介:根据基模高斯光场,运用MonteCarlo随机模拟方法,实现了基模高斯光场的模拟,直观地说明了基模高斯光束的横模.

  • 标签: MONTE Carlo 高斯光束 模拟
  • 简介:Reconstructionofabsorptioncoefficientμ_aandscatteringcoefficientμ_aisveryimportantforapplicationsofdiffuseopticaltomographyandnearinfraredspectroscopy.Aimingattheearlycancerdetectionofcervixandstomach,wepresentafastinverseMonte-Carloschemeforextractingμ_aandμ_sofatubulartissuefromthemeasurementonfrequencydomain.Resultsshowthatthecomputationtimeforreconstructingonesetofμ_aandμ_sislessthan1minandtherelativeerrorsinreconstructionarelessthan±10%fortheopticalpropertiesofnormalcervicaltissueandprecancerouslesions.

  • 标签: 蒙特卡洛反转 萃取 光学性质 管状组织
  • 简介:Thestochasticmodelsoftheusualjointsarefirstestablishedthroughintro-ducingtheconceptsof“clearancecharacteristicelement”and“clearancespace”.Afterde-rivingtheprobabilitydensityfunctionofthejointclearanceandmakingtheprobabilisticanalysisoftheresultedkinematicerrors,thesamplingformulasoftheindependentvaria-blesofthejointclearancesarefurtherdeduced.ThroughMonteCarlosimulation,thesta-tisticalcharacteristicsandfrequencyhistogramsofthekinematicerrorsarethenanalysedoncomputer.

  • 标签: PROBABILITY analysis simuiation/spatial LINKAGE ERROR joint
  • 简介:Inthispaperweproposedanovelexactfixed-nodequantumMonteCarlo(EFNQMC)algorithm,whichisaself-optimizingandself-improvingprocedure,IncontrasttothepreviousEFNQMCmethod,thetrialfunctionisoptimizedsynchronisticallyinthediffusionprocedure,butnotbeforethebeginningofEFNQMCcomputation.Inordertooptimizethetrialfunction,theimprovedsteepestdescenttechniqueisused,inwhichthestepsizeisautomaticallyadjustable.Theprocedureisquasi-Newtonandconvergessuperlinearly.Wealsouseanoveltrialfunction,whichhascorrectelectron-electronandelectron-nucleuscuspconditions.ThenovelEFNQMCalgorithmandthenoveltrialfunctionareemployedtocalculatetheenergiesof1^1A1stateofCH2,^1AgstateofC8andtheground-statesofH2,LiH,Li2,H2O,respectively.Thetestresultsshowthatboththenovelalgorithmandthetrialfunctionproposedinthepresentpaperareveryexcellent.

  • 标签: 自优化 蒙特卡洛算法 EFNQMC 固定节点量子 测试函数
  • 简介:对核参数敏感度和不确定性分析的理论方法进行了探讨,在敏感度系数的基础上所定义的积分指标Esum能定量地表示出两个不同核裂变装置的相似性,即可用于定量地比较一个基准核裂变实验装置与一个欲评估核裂变装置的相似程度。不确定性的分析提供了一个计算核裂变系统中由于截面数据方差而导致系统中七疆方差的方法,并且也提供了一个计算不同核裂变系统中Keff协方差的方法。不确定性的分析方法是将截面数据的方差信息通过与能量有关的敏感度系数传播给Keff行。某一材料截面数据的方差可以传播给所有含有该材料的临界装置。有着相同材料的临界装置将产生关联。

  • 标签: 参数敏感度 不确定性分析 实验装置 截面数据 KEFF 临界装置