简介:BasedontheDyson-Schwingerequationsofquarkpropagatorinrainbowtruncationwithaneffectivegluonpropagator,thetenunknownGasser-LeutwylercoefficientsofthechiralLagrangianforpseudoscalarGoldstonebosonsarepredicted.ThepredictedvaluesofL_iwithi=1,2,...,10areinareasonableagreementwithempiricalvaluesusedwidelyinliterature,andthevaluespredictedbymanyothertheoreticalmodelswithQCDcharacteristics.
简介:AnovelmodelingtechniquebasedonthecoupledEulerian-Lagrangian(CEL)methodisprovidedtosolvethegeotechnicalproblemswithlargedeformations.Thetechniqueisintendedtosolvetheupdateproblemofsoilmechanicalpropertiesduringspudcanpenetrationinnormallyconsolidatedclaysoil.IntheCELmodel,thenormalmethodofassigninganincreasingshearstrengthprofilewithdepth(NA)isdefectiveduetoitsEulerianframework.Inthispaper,anewtechniqueisproposedtoupdatesoilmaterialpropertiesbyintroducingthermo-mechanicalcoupledanalysis(TMCA)totheCELmodels.DuringestablishmentoftheCELmodels,theoptimalpenetrationvelocityandminimummeshsizearedeterminedthroughparametricstudies.Reasonabilityandaccuracyarethenverifiedthroughcomparisonofthepreliminaryresultswiththesoilflowconfigurationandpenetrationresistance(Fv)ofacentrifugetest,andtheresultsoftheproposedmethodarecomparedwiththoseoftheremeshingandinterpolationtechniquewithsmallstrain(RITSS)method.ToachieveaCELmodelwithsatisfactoryaccuracy,theNAandTMCAmethodsimplementedintheCELmodelsandtheRITSSmethodarefirstadoptedinweightlesssoil.ComparisonofthefindingswiththoseobtainedinpreviousstudiesshowsthattheTMCAmethodcanupdatematerialpropertiesandpredictFv.TheTMCAmethodisthenappliedtosoilswithself-weightanddifferentshearstrengthprofiles.Resultsshowthattheproposedmethodiscapableofaccuratelymodelingthelargedeformationproblemofspudcanpenetrationinnon-homogeneousclay.
简介:基于低精力QCDLagrangian质子上的理论和交叉对称关系,奇怪的介子相片生产和它的联系放射的俘获reinvestigated在[SU_(SF)(6)直接XO(3)]_(sym)。工具条的DirectXSU_C(3)夸克模型有一个仅仅一样的输入参数的那里的结构,唯一的强壮的联合常数α_M。为生气的节,γ+p→K~++Λ反应的p极化和为有Y=Λ的K~-+p→γ+Y的K~放射的俘获的分叉的比率的计算,Σ~0被执行。到数据的好协议被获得,结果证明与传统的现象学的模型相比,低energyQCDLagrangian理论提供对奇怪的mesonphoto生产和它的联系放射的俘获的成功的、统一描述。