简介：Therecentrapiddevelopmentsintheautomobileindustryhavedemandedtheextensiveuseofgalvannealed(GA)steelsheets.Inparticular,thedevelopmentoflightweightautomobilesisputtingincreasinglyhigherrequirementsonthestrengthofGAsteelsheets.Thegalvannealfurnace,whichisusedforprocessinggalvannealedsteelsheets,istypicallycomposedoftheinductionheatingsection,holdingsectionandfogcoolingsection.Thispaperdescribedthestructuralcharacteristicsofeachcomponentofthegalvannealfurnace,andanalyzedtemperaturecontrolmethodsofthegalvannealfurnacethatareimportantforthesuccessfulproductionofhigh-strengthGAsteelsheetsforautomotiveapplications.

简介：Somewaysofmultilevelrelaxedpreconditioningmatricesforthestiffnessmatrixinthediscretizationofselfadjointsecondorderellipticboundaryvalueproblemsareproposed.Forreason-ableassumptionsoftherelaxedfactorω,smallerrelativeconditionnumbersaregiven.Theoptimalrelaxedfactorωisderived,too.

简介：InthispaperweprovethattheconvergencerateofthemodifiedGauss-Seidelmethodisamonotonicfunctionforsomepreconditionparameters.

简介：AconicNewtonmethodisattractivebecauseitconvergestoalocalminimizzerrapidlyfromanysufficientlygoodinitialguess.However,itmaybeexpensivetosolvetheconicNewtonequationateachiterate.InthispaperweconsideraninexactconicNewtonmethod,whichsolvesthecouicNewtonequationoldyapproximatelyandinsonmunspecifiedmanner.Furthermore,weshowthatsuchmethodislocallyconvergentandcharacterizestheorderofconvergenceintermsoftherateofconvergenceoftherelativeresiduals.

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简介：Thepricingoftelecommunicationservicesisquiteimportantaswellascomplicated.ThispaperstrengthenstheresearchoftheoriesandimplementationoftelecommunicationtariffinChina.Itishelpfulforthegovernmentauthoritiesandenterprisestounifyandstandardizetheregulatorymethods,toguidethedecidingofthestructureandleveloftelecommunicationtariffbyimplementingscientifictheories,tofurtherdevelopandoptimizethetariffsystem.Thispaperconductsasystematic,in-depthandcreativeresearchonsomeofthemostpopularandmostdifficultproblemsintheareaoftelecommunicationtariffresearch,suchastheregulationoftelecommunicationtariff,thetheoriesoftelecommunicationtariff,thesystematicpricingtheory,theinterconnectioncharge,themodelcostevaluationtheory,thelong-runincrementalcosttheory,andtheinternationaltelecommunicationtariff.Afterstudyingtheforeignmethodsontelecommunicationtariffregulation,basingonthecurrentsituationofChina'stariffregulation,thescopeandmethodsforChina'stelecommunicationtariffregulationaresuggested.Aimedattheweaknessofpricingtheoryforenterprisestosetuptelecommunicationtariffs,anoverallframeworkoftelecommunicationtarifftheoriesisproposed.Thesystematicpricingtheoryandmodelcostevaluationtheoryoftelecommunicationservicesareputforwardfromabrandnewperspective.Afronttopic,theLRICtheory,isprobed.Inaddition,thepricingpracticesofnetworkinterconnectionchargeandinternationaltelecommunicationtariff,whicharecurrentlyveryattractivetothetheorists,arediscussed.Basingonthesestudies,thispaperimprovesthestructureoftelecommunicationtarifftheory.ItprovidestheChinesegovernmentauthoritieswithpracticalmethodsandhelpfulsupportstoregulatethetelecommunicationtariffs;inthemeantime,italsoprovidestheenterpriseswithscientificpricingtheoriesandmethodstosetuptelecommunicationtariffs.Overall,thispaperhasnot

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简介：为Hamiltonian微分方程的数字处理，symplectic综合者是最合适的选择，并且方法thal是结合一样到symplectic综合者份额好长期的行为。这笔记描绘线性多，方法是其内在的一步舞的步方法结合到一个symplectic综合者。寄生答案部件的围住的海角没被探讨。

简介：Resolventmethodsarepresentedforgeneratingsystematicallyiterativenumericalalgorithmsforconstrainedproblemsinmechanics.Theabstractframeworkcorrespondstoageneralmixedfiniteelementsubdif-ferentialmodel,withdualandprimalevolutionversions,whichisshowntoapplytoproblemsoffluiddynamics,transportphenomenaandsolidmechanics,amongothers.Inthismanner,Uzawa’stypemethodsandpenalization-dualityschemes,aswellasmacro-hybridformulations,aregeneralizedtononnecessarilypotentialnanlinearmechanicalproblems.

简介：Aformulationofadifferentialequationasprojectionandfixedpointpi-Memalloivsapproximationsusinggeneralpiecnvisefunctions.Weproneexistenceanduniquenessoftheupproximatesolution*convergenceintheL2normandnodalsupercnnvergence.TheseresultsgeneralizethoseobtainedearlierbyHulmeforcontinuouspiecevjisepolynomialsandbyDelfour-Dubeaufordiscontinuouspieceuiisepolynomials.Adualityrelationshipforthetwotypesofapproximationsisalsogiven.

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简介：Aclassofnonconformingfiniteelementsisconsideredinthispaper,whichiscontinuousonlyatthenodesofthequasi-uniformmesh.Weshowthatthereex-istsanessentialestimatewhichindicatestheequivalencerelation,independentofthemeshparameter,betweentheenergiesofthenonconformingdiscreteharmonicextensionsindifferentsubdomains.Theessentialestimateisofgreatimportanceintheanalysisofthenonoverlappingdomaindecompositionmethodsappliedtosecondorderpartialdifferentialequationsdiscretizedbynonconformingfiniteele-ments.

简介：Usingrole-plays/dramaTask1Whataretheadvantagesofusingroleplays/dramainlanguageteaching?Haveyouevertriedthem?Whathaveyoufoundaboutthem?Dis-cusswithanotherteacher.OurcommentsRole-plays/dramacanprovidechildrenwiththeopportunitytouseEnglishinaquitenaturalandmeaningfulcontext.Theoutcomeofsuchactivitiesisusuallymorethanjustthepracticeofthelanguage.Theseactivitiesrequirethelearnerstoparticipatebothphysicallyandemotionally.Al-mond(2002)regardsthiskindofapproachasa

简介：Inthispaper,thesemi-discreteandfullydiscreteFourierspectralschemesfortheGinzburg-LandaucoupledwithBBMequationswithperiodicinitialvalueproblemareproposed,andtheconvergenceandstabilitiesfortheschemesareproved.

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简介：切开的修改Hermitian和skew-Hermitian(MHSS)重复方法和preconditionedMHSS(PMHSS)重复方法分别地被介绍。在纸，根据MHSS重复方法，我们在场为与non-Hermitian和复杂对称的积极definite/semi-definite解决大稀少的连续Sylvester方程的一个PMHSS重复方法矩阵。在合适的条件下面，我们证明PMHSS重复方法的集中并且讨论光谱preconditioned矩阵的性质。而且到计算花费了的还原剂，我们建立PMHSS重复方法的不精确的变体并且详细分析它的集中性质。数字结果证明PMHSS重复方法和它的不精确的变体是为连续Sylvester方程的这个类的有效、柔韧的解答者。

简介：1.IntroductionConsidertheboundaryvalueproblemofthePoissonequationwherefiisaconvexpolygonregon;r~OfftheboundaryofOandf(x,y)aknownfunctiononfi.Thegeneralizeddifferencemethodsonquadrilateralnetworksforellipticequationsareproposedin[11],’wheretheconverge...

简介：在井之间的阶层的分析在油和煤气的水库的学习是基本的。基于井木头的stratigraphic分割，在井之间的阶层的自动分析用计算机技术被认识到。我们使用匹配明智的线适合，日志字符抽取，匹配费用计算，和等等造跨井的stratigraphic关联关系并且自动地通过片拉跨井的stratigraphic对比的一张路径图的动态波形的一种技术……在分析在井之间的许多结构路径图以后，为正常差错的30个路径模式，反向的差错，不顺从，synsedimentary差错，listric差错，拧外面，等等被总结，路径图模式和关联概念被介绍。在这个方法是有效的Dagang油领域表演的申请分析。

简介：Inthispaper,wesetupageneralframeworkofparallelmatrixmullisplittingrelaxationmethodsforsolvinglargescalesystemoflinearequations.Weinvestigatetheconvergencepropertiesofthisframeworkandgiveseveralsufficientconditionsensuringittoconvergeaswellasdiverge.Atlast,weconcludeanecessaryandsufficientconditionfortheconvergenceofthisframeworkwhenthecoefficientmatrixisanL-matrix.