简介:在自然、社会的科学的许多实际系统能被动态网络描述。一天一天地,我们测量了并且从这些网络积累了数据的巨大的数量,它能被我们使用推进我们世界的理解。生产这些数据的网络的结构经常是未知的。因而,从可得到的数据理解这些网络的结构转弯是学科交差的域里的中央问题之一,它被称为网络重建问题。在这份报纸,我们用数据可获得性不为常规网络重建是足够的部分可得到的数据和一些状况考虑了网络重建的问题。而且,我们建议与仅仅可得到的子网和隐藏的全部网络的另外的节点的数据推断子网;与一些可得到的节点变量的一般水准在网络描绘组组相互作用;并且网络被未知内部快变化的噪音和未知外部慢慢地变化的信号驾驶仅仅,与节点变量的已知的数据执行网络重建。所有这些状况被期望在实际系统和方法普通,结果可能为真实世界应用是有用的。
简介:联锁钉的Intramedullary是为胫骨的柄破裂的治疗的一个标准答案。对损伤第二等的一根钉子弯曲是稀罕复杂并发症,它可以被遇到在愈合或unhealed胫骨的柄破裂。如此的弄弯的钉子的移动总是是挑战。我们报导了这个案例为弄弯的钉子的移动讨论各种各样的技术并且在在被同意进入我们的部门与的一个30岁的人移开一根弄弯的胫骨的intramedullary钉子分享我们的经验由于一个路边事故恰好胫骨的柄重新断裂在起始的外科的治疗以后的二年。intramedullary钉子,由30度的偏好并且在anterioposterior上以及在侧面的拍上可见,被部分切凸的墙第一削弱,然后由使用外部力量弄直,并且最后由使用标准钉子移动方法搬迁了。
简介:Inthispaperweprovideamethodtotesttheexistenceofthechangepointsinthenonparametricregressionfunctionofpartiallylinearmodelswithconditionalheteroscedasticvariance.Weproposetheteststatisticandestablishitsasymptoticpropertiesundersomeregularconditions.Somesimulationstudiesaregiventoinvestigatetheperformanceoftheproposedmethodinfinitesamples.Finally,theproposedmethodisappliedtoarealdataforillustration.
简介:冠的stents是通过导管送到堵住的容器的金属卷或网孔试管,它被汽球扩展再开并且支架目标容器。最近,特殊的药被stents(drug-elutingstents)带进一步在stenting过程以后减少in-stent狭窄率。然而,stents的biomechanical特征上的不断的学习为在stents和织物之间的更好的相互作用是必要的,或提供为drug-elutingstents装载站台的更合适的药。这份报纸的目的是显示出有限元素方法怎么能被用来学习弄弯的冠的stents的房间区域和神气分发变化。一样的弯曲变丑被用于冠的stent由一个僵硬弄弯的容器建模的二个广告。结果证明stent设计在把状况弄弯下面影响了房间区域和神气分发的变化。有连接的stent与山峰山峰在外部弯曲,和stent有更多的房间区域变化()神气设计能有神气接触并且在内部弯曲重叠。在结论,这个有限元素方法能被用来学习并且比较弄弯的stents的房间区域和神气分发变化,并且在新stents的严峻、改进的biomechanical特征为设计者提供一个方便工具。
简介:ANOTEONTHESTRONGCONSISTENCYOFESTEMATESIN PARTIALLY LINEAR MODELSZhuLixing;(朱力行)AnHongzhi(安鸿志)(InstituteofAppliedMathematics,C...
简介:ThispaperdevelopsanewlowerboundmethodforPOMDPsthatapproximatestheupdateofabeliefbytheupdateofitsnon-zerostates.ItusestheunderlyingMDPtoexploretheoptimalreachablestatespacefrominitialbeliefandselectactionsduringvalueiterations,whichsignificantlyacceleratestheconvergencespeed.Also,analgorithmwhichcollectsandprunesbeliefpointsbasedontheupperandlowerboundsispresented,andexperimentalresultsshowthatitoutperformssomeofthestate-of-artpoint-basedalgorithms.
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简介:Geepilayersofdifferentthicknessesaregrownbymolecular-beamepitaxywithSbasasurfactantonSI(100)substrates,X-raydiffractionillustratesthattheseGethinfilmsarepartiallystrained.andthestrainsdecreasegraduallywithincreasingepilayerthickness,RamanspectrarevealadownwardshiftoftheGe-Gemodepeakastheepilayerthicknessincreases.Intheregionsofhighstrain,therelationshipbetweentheRamanshiftofthismodeandthestraininthepartiallyrelaxedsamplesisconsiderablydifferentfromthelinearrelationshipreportedbefore,whichismainlyattributedtothespatialconfinementeffectofphononsinananocrystal.
简介:WeprovideconvergenceresultsanderrorestimatesforNewton-likemethodsingeneralizedBanachspaces.TheideaofageneralizednormisusedwhichisdefinedtobeamapfromalinearspaceintoapartiallyorderedBanachspace.Convergenceresultsanderrorestimatesareimprovedcomparedwiththerealnormtheory.
简介:Thereflectionofobliqueincidentwavesfrombreakwaterswithapartially-perforatedfrontwallisinvestigated.Thefluiddomainisdividedintotwosub-domainsandtheeigenfunctionexpansionmethodisappliedtoexpandvelocitypoten-tialsineachdomain.Intheeigen-expansionofthevelocitypotential,evanescentwavesareincluded.Numericalresultsofthepresentmodelarecomparedwithexperimentaldata.Theeffectofporosity,therelativechamberwidth,therelativewaterdepthinthewaveabsorbingchamberandthewaterdepthinfrontofthestructurearediscussed.
简介:ThispaperpresentsacanonicalHamiltonianmodelofliquidsloshingforthecontainercoupledwithspacecraft.Ellipticalshapeofrigidbodyisconsideredasspacecraftstructure.Hamiltoniansystemisanimportantformofmechanicalsystem.Itmostlyusedtostabilizethepotentialshapingofdynamicalsystem.Freesurfacemovementofliquidinsidethecontaineriscalledsloshing.Ifthereisuncontrolledresonancebetweenthemotionoftankandliquid-frequencyinsidethetankthensuchsloshingcanbeareasonofattitudedisturbanceorstructuraldamageofspacecraft.Equivalentmechanicalmodelofsimplependulumormassattachedwithspringforsloshingisusedbymanyresearchers.MassattachedwithspringisusedasanequivalentmodelofsloshingtoderivethemathematicalequationsintermsofHamiltonianmodel.AnalyticalmethodofLyapunovfunctionwithCasimirenergyfunctionisusedtofindthestabilityforspacecraftdynamics.Verticalaxialrotationistakenasthemajoraxialsteadyrotationforthemovingrigidbody.
简介:Thispaperproposesanewapproachforvariableselectioninpartiallylinearerrors-in-variables(EV)modelsforlongitudinaldatabypenalizingappropriateestimatingfunctions.WeapplytheSCADpenaltytosimultaneouslyselectsignificantvariablesandestimateunknownparameters.Therateofconvergenceandtheasymptoticnormalityoftheresultingestimatorsareestablished.Furthermore,withproperchoiceofregularizationparameters,weshowthattheproposedestimatorsperformaswellastheoracleprocedure.Anewalgorithmisproposedforsolvingpenalizedestimatingequation.Theasymptoticresultsareaugmentedbyasimulationstudy.
简介:Thenaturalfrequencies,complexmodesandcriticalspeedsofanaxiallymovingrectangularplate,whichispartiallyimmersedinafluidandsubjectedtoapretension,areinvestigated.Theeffectsoffreesurfacewaves,compressibilityandviscidityofthefluidareneglectedintheanalysis.Thesubsectionfunctionsareusedtodescribethediscontinuouscharacteristicsofthesystemduetopartialimmersion.Theclassicalthinplatetheoryisadoptedtoformulatetheequationsofmotionofavibratingplate.ThevelocitypotentialandBernoulli’sequationareusedtodescribethefluidpressureactingonthemovingplate.Theeffectoffluidonthevibrationsoftheplatemaybeequivalenttotheaddedmassontheplate.Theeffectsofdistanceratio,movingspeed,immersed-depthratio,boundaryconditions,stiffnessratioandaspectratiooftheplateaswellasthefluid-platedensityratiosonthefreevibrationsofthemovingplate-fluidsystemareinvestigated.