简介：Datacollectedonthesurfaceoftheearthoftenhasspatialinteraction.Inthispaper,anon-isotropicmixingspatialdataprocessisintroduced,andundersuchaspatialstructureanonparametrickernelmethodissuggestedtoestimateaspatialconditionalregression.Undermildregularities,sufficientconditionsarederivedtoensuretheweakconsistencyaswellastheconvergenceratesforthekernelestimator.Ofinterestarethefollowing:(1)Alltheconditionsimposedonthemixingcoefficientandthebandwidtharesimple;(2)Differentlyfromthetimeseriessetting,thebandwidthisfoundtobedependentonthedimensionofthesiteinspaceaswell;(3)Forweakconsistency,themixingcoefficientisallowedtobeunsummableandthetendencyofsamplesizetoinfinitymaybeindifferentmannersalongdifferentdirectioninspace;(4)However,tohaveanoptimalconvergencerate,fasterdecreasingratesofmixingcoefficientandthetendencyofsamplesizetoinfinityalongeachdirectiona

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简介：Assumethatm≥2,pisaprimenumber,(m,p(p-1))=1,-1(Z/mZ)~*and[(Z/mZ)~*:]=4.Inthispaper,wecalculatethevalueofGausssumG(X)=Σ_(x∈F_q~*)x(x)ζ_p~(T(x))overF_q,whereq=p~f,f=((m))/4xisamultiplicativecharacterofF_qandTisthetracemapfromF_qtoF_p.Underourassumptions,G(x)belongstothedecompositionfieldKofpinQ(ζm)andKisanimaginaryquarticabeliannumberfield.WhentheGaloisgroupGal(K/Q)iscyclic,wehavestudiedthiscycliceaseinanotherpaper:'Gausssumsofindexfour:(1)cycliccase'(acceptedbyActaMathematicaSinica,2003).Inthispaperwedealwiththenon-cycliccase.

简介：ThispaperdealswiththeapproximatesolutionoftheFredholmequationLu=fofthesecondkindwithf∈H’(Γ).First,wegivetheorderofthen-theoptimalradiusintheworstcasesetting.Then,weshowthattheGalerkinmethodusing2n+1innerproductsoffhasminimalerror.Finally,wegivetheestimateoftheε-complexityoftheFredholmproblemofthesecondkindandGalerkinmethodintheworstcasesetting.

简介：Generalizedcase-cohortdesignhasbeenprovedtobeacost-effectivewaytoenhancetheefficiencyoflargeepidemiologicalcohort.Inthisarticle,weproposeaninferenceprocedureforestimatingtheunknownparametersinCox’sproportionalhazardsmodelingeneralizedcase-cohortdesignandestablishanoptimalsamplesizeallocationtoachievethemaximumpoweratagivenbudget.Thefinitesampleperformanceoftheproposedmethodisevaluatedthroughsimulationstudies.TheproposedmethodisappliedtoarealdatasetfromtheNationalWilm’sTumorStudyGroup.

简介：Manualacupunctureiswidelyusedforpainreliefandstresscontrol.Previousstudiesonacupuncturehaveshownitsmodulatoryeffectsonthefunctionalconnectivityassociatedwithoneorafewpreselectedbrainregions.Toinvestigatehowmanualacupuncturemodulatestheorganizationoffunctionalnetworksatawhole-brainlevel,weacupunctureatST36ofarightlegtoobtainelectroencephalograph(EEG)signals.Bycoherenceestimation,wedeterminethesynchronizationsbetweenallpairwisecombinationsofEEGchannelsinthreeacupuncturestates.Theresultingsynchronizationmatricesareconvertedintofunctionalnetworksbyapplyingathreshold,andtheclusteringcoefficientsandpathlengthsarecomputedasafunctionofthreshold.Theresultsshowthatacupuncturecanincreasefunctionalconnectionsandsynchronizationsbetweendifferentbrainareas.Forawiderangeofthresholds,theclusteringcoefficientduringacupunctureandpostacupunctureperiodishigherthanthatduringthepre-acupuncturecontrolperiod,whereasthecharacteristicpathlengthisshorter.Weprovidefurthersupportforthepresenceof'small-world'networkcharacteristicsinfunctionalnetworksbyusingacupuncture.Thesepreliminaryresultshighlightthebeneficialmodulationsoffunctionalconnectivitybymanualacupuncture,whichcouldcontributetotheunderstandingoftheeffectsofacupunctureontheentirebrain,aswellastheneurophysiologicalmechanismsunderlyingacupuncture.Moreover,theproposedmethodmaybeausefulapproachtothefurtherinvestigationofthecomplexityofpatternsofinterrelationsbetweenEEGchannels.

简介：Inthispaper,westudyoptimalrecovery(reconstruction)offunctionsonthesphereintheaveragecasesetting.WeobtaintheasymptoticordersofaveragesamplingnumbersofaSobolevspaceonthespherewithaGaussianmeasureintheLd-1q(S)metricfor1≤q≤∞,andshowthatsomeworst-caseasymptoticallyoptimalalgorithmsarealsoasymptoticallyoptimalintheaveragecasesettingintheLdq(S-1)metricfor1≤q≤∞.

简介：旋转货摊房间的结构和行为试验性地在一把斜流动扇子被澄清。扇子特定速度是1140(r/min，m3/min，m)，并且在设计流动率的全部的压力上升系数是0.345。外部casing墙上的静态的压力和在转子入口和插头的全部的压力用一个高反应压力变换器被测量。测量数据被DPLA技术，和结构的使用处理，旋转货摊房间的行为被获得。作为结果，货摊房间程度为环绕并且在货摊房间内的spanwise方向和压力分布被澄清。货摊房间繁殖的细节也被显示出。关键词斜流动扇子-旋转货摊房间-不稳定的流动-DPLA技术CLC数字TH432.2

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简介：AFeynmandiagramtheoryforacousto-optic(AO)interactionsisestablished,whichprovidesageneralmethodtocalculatethescatteringamplitudesandintensitiesforbothsingle-frequencyandmultifrequcncyAOinteractions.ThemethodisbasedoncountingthenumberofallowableFeynmandiagrams.Thefollowingimportantassertionhasbeenprovedrigorouslyinthispaper.TheratiosofthenumbersofFeynmandiagramsallowableinvariousBraggdiffractions(isotropie,nondegeneratcbirefringent,anddegeneratebirefringent)tothatinRaman-Nathdiffractionareindependentofthenumberofdifferentacousticfrequencies,beingafunctiononlyoftheorderoftheFeynmandiagramandthediffractionorderofthefinalstate.Generalexpressionsfortheseratiosarcobtained.Basedonthis,completeperturbationsolutionsforthescatteringamplitudesandintensitiesareobtainedforanykindofAOinteractions,anynumberofacousticfrcquencies,andanyfinalstate.Thistheorygivesallresultsobtain

简介：ＯＰＴＩＭＡＬＭＯＤＥＬＳＦＯＲＴＨＥＦＩＲＳＴＡＲＲＩＶＡＬＴＩＭＥＤＩＳＴＲＩＢＵＴＩＯＮＦＵＮＣＴＩＯＮＩＮＣＯＮＴＩＮＵＯＵＳＴＩＭＥ－ＷＩＴＨＡＳＰＥＣＩＡＬＣＡＳＥＬＩＮＹＵＡＮＬＩＥ（林元烈）（ＤｅｐａｒｔｍｅｎｔｏｆＡｐｐｌｉｅｄＭａ...

简介：Theeffectsofturbulenceontheaerodynamicproperties,especiallysurface-pressurespectraandvortex-inducedvibrations,oftwo-dimensionalrectangularprismswithslendernessratiosof2and4areinvestigatedexperimentally.Particularattentionisgiventoturbulenceintegralscaleef-fectsfromtheview-pointofenergydistributioninfrequencydomain.

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简介：介绍计算了Lsup2错误估计的研究因为为秒的混合有限元素方法订非线性的夸张方程。到一个连续时间的盒子的计算结果的申请；为分级的函数和流动的值的集中的示范；技术在计算使用了。

简介：Remainingusefullife(RUL)estimationisatopicthathasgainedmoreandmoreattentioninthefieldoffluidpowersystems,thankstothetremendouspotentialsshownforimprovingsafetyandreducedproductionlosses.However,manychallengesrelatedtoRULestimationarenotsolvedyet,mainlyconnectedtothedefinitionofthehealthstatusofeachcomponent.Aprognosticmethodbasedonadata-drivenmethodologyforhydraulicsystemsishereproposedtoestimatethepercentageoflifealreadyspentbythemonitoredcomponents.Thepotentialsofthemethodologyareshownconsideringthecaseofatruck-mountedhydrauliccrane,forwhichasimulationmodelwasavailable.

简介：ＡＮＨＡＲＭＯＮＩＣＡＮＡＬＹＳＩＳＦＯＲＯＰＥＲＡＴＯＲＳＩＮＴＨＥＣＡＳＥＯＦＡＬＯＣＡＬＬＹＣＯＭＰＡＣＴＡＢＥＬＩＡＮＧＲＯＵＰ：Ｆ．ＡＮＤＭ．ＲＩＥＳＺ　ＴＨＥＯＲＥＭＳＹｕＳｈｕｍｏ（于树模）（Ｄｅｐｔ．ｏｆＭａｔｈ．，ＦｕｄａｎＵｎｉｖ...