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简介：Newtonian,QuemadaandCassonbloodviscositymodelsareimplementedinordertosimulatetherheologicalbehaviorofbloodunderpulsatingflowconditionsinapatientspecificiliacbifurcation.Theinfluenceoftheappliedbloodconstitutiveequationsismonitoredviathewallshearstress(WSS)distribution,magnitudeandoscillations,non-Newtonianimportancefactors,andviscosityvaluesaccordingtotheshearrate.ThedistributionofWSSonthevascularwallfollowsapatternwhichisindependentoftherheologicalmodelchosen.Ontheotherhand,theWSSmagnitudeandoscillationsaredirectlyrelatedtothebloodconstitutiveequationsappliedandtheshearrate.ItisconcludedthattheNewtonianapproximationissatisfactoryonlyinhighshearandflowrates.Moreover,theNewtonianmodelseemstooverestimatethepossibilityfortheformationofatheroscleroticlesionsoraneurysmsatsitesofthevascularwallwheretheWSSareoscillating.

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简介：Thegeneralizedautoregressiveconditionalheteroskedasticity(GARCH)typemodelsareusedtoinvestigatethevolatilityofBangladeshstockmarket.Thefindingsofthestudydemonstratethattheindexvolatilitycharacteristicschangesovertime.Thearticleshowsthatthedataaredividedintothreesub-periods:precrisis,crisis,andpostcrisis.Accordingly,theresultsofthefindingsindicatechangesintheGARCH-typemodelsparameter,riskpremiumandpersistenceofvolatilityindifferentperiods.Asignificant'low-yieldassociatedwithhigh-risk'phenomenonisdetectedinthecrisisperiodandthe'leverageeffect'occursineachperiods.Theinvestorsareirrationalwhichisbasedonassumptionofriskandreturncharacteristicsofassets.Consequently,themarketisnotasmatureasdevelopedmarket.Itisfoundinthearticlethatthethresholdgeneralizedautoregressiveconditionalheteroskedasticity(TGARCH)modelismoreaccurateforthemodelaccuracy.Additionally,statisticerrormeasurementsindicatethatGARCHmodelismoreefficientthanothersandithasalsomoreforecastingability.

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简介：Theaccuratemodelingandpredictionoftherotatingstallinacentrifugalpumpisasignificantchallenge.Oneofthemodelingtechniquesthatcanimprovetheaccuracyoftheflowpredictionsisthelargeeddysimulation(LES).ThequalityoftheLESpredictionsdependsonthesub-grid-scale(SGS)modelimplementedintheLES.ThispaperassessestheinfluenceofvariousSGSmodelsthataresuitableforpredictingrotatingstallinalow-specificspeedcentrifugalpumpimpeller.TheSGSmodelsconsideredinthepresentworkincludetheSmagorinskymodel(SM),thedynamicSmagorinskymodel(DSM),thedynamicnon-linearmodel(DNM),thedynamicmixedmodel(DMM)andthedynamicmixednon-linearmodel(DMNM).TheresultsobtainedfromthesemodelsarecomparedwiththePIVandLDVexperimentaldata.TheanalysisoftheresultsshowsthattheSGSmodelshavesignificantinfluencesontheflowfield.Amongthemodels,theDSM,theDMMandtheDMNMcansuccessfullypredictthe'two-channel'stallphenomenon,butnottheSMandtheDNM.Accordingtothesimulations,theDMNMgivesthebestpredictiononthemeanvelocityflowfieldandalsoindicatesimprovementsforthesimulationoftheturbulentflow.Moreover,thehighturbulentkineticenergypredictedbytheDMNMisinthebestagreementwiththeexperimentdata.

简介：Thispapercontinuesourrecentworkontherelationshipbetweendiscretecontactinteractionsatthemicroscopicscaleandcontinuumcontactinteractionsatthemacroscopicscale(Hulikaletal.,J.Mech.Phys.Solids76,144–161,2015).Thefocusofthisworkisonadhesion.Weshowthatacollectionofalargenumberofdiscreteelementsgovernedbyathreshold-forcebasedmodelatthemicroscopicscalecollectivelygivesrisetocontinuumfracturemechanicsatthemacroscopicscale.Akeystepistheintroductionofanefficientnumericalmethodthatenablesthecomputationofalargenumberofdiscretecontacts.Finally,whilethisworkfocusesonscalinglaws,themethodologyintroducedinthispapercanalsobeusedtostudyroughsurfaceadhesion.

简介：这份报纸为基于F统计数值在高维的部分线性的模型测试回归系数建议一个测试过程。在部分线性的模型，作者首先由一些nonparametric方法估计未知非线性的部件然后概括F统计数值在一些常规条件下面测试回归系数。在这个过程期间，非线性的部件的评价带许多挑战探索概括F-test的性质。作者在更一般的盒子中获得概括F-test的一些asymptotic性质，包括asymptotic规度和有p/n的这测试的力量(0，1)没有规度假设。asymptotic结果是一般的，由增加一些限制条件，我们能在高维的线性模型获得类似的结论。通过模拟研究，作者与理论结果比较表明建议测试的好有限样品的性能。我们的方法的实际用途被一个真实数据例子说明。

简介：In3Dmodelsretrieval,featuredescriptionandretrievalofnon-rigidmodelfacemorecomplexproblemsduetotheisometrytransformationofitself.Weintroducethehierarchicalcombinationmatchingintothefeaturecomparison,andbuildamapbetweenthedividedregionsoftwomodels,andthenachieveaccuratefeaturematchingbasedonpatch-by-patch,whichsuccessfullyintroducesthespatialinformationintofeaturematching.Verifiedbyexperiment,the3Dmodelretrievalmethodproposedinthispaperbasedonhierarchicalcombinationmatchingcanmakesuremoreaccuratefeaturematching,soastoenhancetheprecisionofretrieval.

简介：用32，CMIP5(联合模型Intercomparison工程阶段5)当模特儿，这研究在为1850-2005的观察外部放射的强迫驾驶的历史的跑在云数量和他们的放射的效果(CRE)的模拟检验诚实，并且他们的未来在4.5情形竞选的RCP(代表性的集中小径)改变2006-2100。为历史的跑的确认度量标准被设计为climatological在空间模式的表示检验精确性吝啬、年度并且云和CRE的interannual变化。模型在云数量的模拟显示出大传播，明确地在低云总计。大规模环境也是的在云数量并且控制之间的观察关系由各种各样的模型不同地复制了。基于作为四个模型的最好的模型，和一般水准选择的确认度量标准，四modelsACCESS1.0，ACCESS1.3，HadGEM2-CC，和HadGEM2-ESare比multimodel整体一般水准更熟练地表现。模型投射全球平均数的SST在温室气体的增加温暖的所有，而是大小越过在1和2K之间的模拟变化，它对在云数量和分发的变化的差别大部分可归因。模仿温暖的更多的SST的模型由于减少的低云和增加的到来的短波放射在网CRE显示出更大的增加，特别地在在画热带的海洋的边界层的区域上。选择最好执行的模型在大约0.99%K1的全球平均数的云数量投射重要减小并且捕捞建议积极反馈的一个角色到全球温暖的0.46Wm2K1,的放射的温暖。

简介：这份报纸建议贝叶斯的semiparametric与errors-in-covariates为二倍地审查的数据加速了失败时间模型。作者经由Dirichlet过程为未被遵守的covariates和回归错误的分布建模。而且，作者为可变选择把贝叶斯的套索途径递我们的semiparametric模型。作者为以后的计算开发Markov链蒙特卡罗策略。模拟研究被进行显示出建议方法的表演。作者也用PBC数据和ACTG175数据的分析表明方法的实现。

简介：Consideringtheimportanceofblackcarbon(BC),thisstudybeganbycomparingthe20thcenturysimulationofSouthAsiansummerclimateinIPCCCMIP3,basedonthescenarioofmodelswithandwithoutBC.Generally,themulti-modelmeanofthemodelsthatincludeBCreproducedtheobservedclimaterelativelybetterthanthosethatdidnot.Then,the21stcenturySouthAsiansummerprecipitationwasprojectedbasedontheIPCCCMIP3projectionsimulations.Theprojectedprecipitationinthepresentapproachexhibitedaconsiderabledifferencefromthemultimodelensemblemean(MME)ofIPCCAR4projectionsimulations,andalsofromtheMMEofthemodelsthatignoretheeffectofBC.Inparticular,thepresentprojectionexhibitedadryanomalyoverthecentralIndianPeninsula,sandwichedbetweenwetconditionsonthesouthernandnorthernsidesofPakistanandIndia,ratherthanhomogeneouswetconditionsasseenintheMMEofIPCCAR4.Thus,thespatialpatternofSouthAsiansummerrainfallinthefuturemaybemorecomplicatedthanpreviouslythought.

简介：桥的以前的失败分析典型地独立集中于基础失败或上层建筑失败。在一座实际的桥，然而，地震导致的基础失败和上层建筑失败可以影响对方。而且，以前的研究典型地使用简化模型分析桥失败；然而，与使用相比在计算精确性有固有的缺点一详细说明三维(3D)有限元素(FE)模型。相反地，一个详细3DFE模型要求更计算的费用，和3D元素的一个合适的侵蚀标准是必要的。在这份报纸，包括一个相应侵蚀标准，一个多尺度的FE模型显著地被求婚并且验证那个罐头由建模与高精确减少计算费用增强的水泥(RC)的伪dynamic测试墩。一座连续RC桥的地震失败的数字模拟基于用LS-DYNA为方法建模的多尺度的FE被执行。桥，各种各样的连接力量和双向刺激的非线性的性质被考虑。数字结果证明连接的失败将导致girders的大跳的回答。墩的非线性的变丑将加重跳的损坏。而且，双向地震将导致怪癖的跳到girders和不同失败模式到邻近的墩。

简介：ThisstudyproposesaGreen’sfunction,anessentialrepresentationofwater-saturatedgroundundermovingexcitation,tosimulategroundbornevibrationfromtrains.First,generalsolutionstothegoverningequationsofporoelasticmediumarederivedbymeansofintegraltransform.Secondly,thetransmissionandreflectionmatrixapproachisusedtoformulatetherelationshipbetweendisplacementandstressofthestratifiedground,whichresultsinthematrixoftheGreen’sfunction.ThentheGreen’sfunctioniscombinedintoatrain-track-groundmodel,andisverifiedbytypicalexamplesandafieldtest.Additionalsimulationsshowthatthecomputedgroundvibrationattenuatesfasterintheimmediatevicinityofthetrackthaninthesurroundingarea.Thewavelengthofwheel-railunevennesshasanotableeffectoncomputeddisplacementandporepressure.Thevariationofvibrationintensitywiththedepthofgroundissignificantlyinfluencedbythelayeringofthestratasoil.WhenthetrainspeedisequaltothevelocityoftheRayleighwave,theMachconeappearsinthesimulatedwavefield.TheproposedGreen’sfunctionisanappropriaterepresentationforalayeredgroundwithshallowgroundwatertable,andwillbehelpfultounderstandthedynamicresponsesofthegroundtocomplicatedmovingexcitation.

简介：Anew3Dvelocitymodelofthecrustanduppermantleinthesoutheastern(SE)marginoftheTibetanplateauwasobtainedbyjointinversionofbody-andsurface-wavedata.Forthebody-wavedata,weused7190eventsrecordedby102stationsintheSEmarginoftheTibetanplateau.Thesurface-wavedataconsistofRayleighwavephasevelocitydispersioncurvesobtainedfromambientnoisecross-correlationanalysisrecordedbyadensearrayintheSEmarginoftheTibetanplateau.ThejointinversionclearlyimprovesthevSmodelbecauseitisconstrainedbybothdatatypes.Theresultsshowthatataround10kmdepththerearetwolow-velocityanomaliesembeddedwithinthreehigh-velocitybodiesalongtheLongmenshanfaultsystem.Thesehigh-velocitybodiescorrespondwellwiththePrecambrianmassifs,andthetwolocatedtothenortheastof2013MS7.0Lushanearthquakeareassociatedwithhighfaultslipareasduringthe2008Wenchuanearthquake.Theaftershockgapbetween2013Lushanearthquakeand2008Wenchuanearthquakeisassociatedwithlow-velocityanomalies,whichalsoactsasabarrierzoneforrupturesoftwoearthquakes.Generallylargeearthquakes(M≥5)intheregionoccurringfrom2008to2015arelocatedaroundthehigh-velocityzones,indicatingthattheymayactasasperitiesfortheselargeearthquakes.Jointinversionresultsalsoclearlyshowthatthereexistlow-velocityorweakzonesinthemid-lowercrust,whicharenotevenlydistributedbeneaththeSEmarginofTibetanplateau.

简介：Tobreakthroughthebottle-neckofquantumyieldinupconversion(UC)core-shellsystem,weelucidatedthattheenergytransferefficiencyincore-shellsystemhadanevidentcontributionfromthechargetransferofinterfacewithrelatedtotwofactors:(1)bandoffsetsand(2)bindingenergyareadensity.Thesetwovariablesweredeterminedbymaterialintrinsicpropertiesandcore-shellthicknessratio.Wefurtherunraveledthemechanismofnon-radiativeenergytransferbychargetransferinduceddipoleattheinterface,basedonaquasi-classicalderivationfromF?rstertyperesonantenergytransfer(FRET)model.Withstablebondingacrosstheinterface,thecontributionsonenergytransferinbothradiativeandnon-radiativeenergytransfershouldalsobeaccountedtogetherinAuzel'senergytransfer(ETU)modelincore-shellsystem.Basedonthediscussionaboutinterfacebonding,bandoffsets,andformationenergies,wefiguredoutthesignificanceofinterfacebondinginducedgapstates(IBIGS)thatplayedasignificantroleforinfluencingthechargetransferandradiativetypeenergytransfer.Theinterfacebandoffsetswereakeyfactorindominatingthenon-radiativeenergytransfer,whichwasalsocorrelatedtocore-shellthicknessratio.Wefoundthattheenergyareadensitywithrelatedtocore/shellthicknessratiofollowedthetrendofBoltzmansigmoidalgrowthfunction.Bythephysicaltrend,thisworkcontributedareferencehowthemulti-layeredcore-shellstructurewasformedstartingfromtheverybeginningwithinminimumsize.Aroutewaspavedtowardsasystematicstudyoftheinterfacetounveiltheenergytransfermechanismincore-shellsystems.