简介：GeologictimeisfundamentaltotheEarthSciences,andprogressinmanydisciplinesdependscriticallyonourabilitytomeasuretimewithincreasingaccuracyandprecision.Isotopicgeochronologymakesuseofthedecayofradioactivenuclidesasahelptoquantifythehistoriesofrock,minerals,andothermaterials.Bothaccuracyandprecisionofradioisotopicagesare,atpresent,limitedbythoseofradioactivedecayconstants.Modemmassspectrometerscanmeasureisotoperatioswithaprecisionof10-4orbetter.Ontheotherhand,theuncertaintiesassociatedwithdirecthalf-lifedeterminationsare,inmostcases,stillatthepercentlevel.ThepresentshortnotebrieflysummarizesprogressandproblemsthathavebeenencounteredduringtheWorkingGroup'sactivity.

简介：Areal-valuedfunctionf(x)onЖbelongstoZygmundclassA.(Ж)ffitsZygmundnorm‖f‖x=inf,|f(x+t)-2f(x)+f(x-t)/t|isfinite.Itisprovedthatwhenf∈A*(Ж),thereexistsanextensionF(z)offtoH={Imz>0}suchthat‖Э^-F‖∞≤√—1+53^2/72‖f‖z.Itisalsoprovedthatiff(0)=f(1)=0,thenmax,x∈[0,1]|f(x)|≤1/3‖f‖x.

简介：Withthehelpofthedeclinemethod,acomputer-aidedanalysisprogramofChristoffelequationisdes-cribedwhichmakesitpossibletocalculateelasticandviscousconstantsofcrystalspreciselyandeasily.TheelasticconstantsofLiNbO3andBi12GeO20crystalsarecalculatedwithanApple-ⅡcomputerandtheFortranprogramsuggested,andthecalculateddataarecomparedwiththevaluesachievedbyothers.

简介：在这份报纸，我们为有限元素功能在反的不平等估计常数。而且，我们为低顺序的有限元素功能在反的不平等获得常数的最不上面的界限。常数的如此的明确的估计能为有限元素方法被用作可计算出来的错误界限。[从作者抽象]

简介：Elovich,parabolicdiffusion,powerfunctionandexponentialequationswereusedtodescribeKdesorptionkineticsof12soilsinaconstantelectricfieldofelectro-ultrafiltration(EUF),ResultsshowedthattheElovich,parabolicdiffusionandpowerfunctionequationscoulddescribeKdesorptionkineticswellowingtotheirhighcorrelationcoefficientsandlowstandarderrors;buttheexponentialequationwasnotsuitabletobeusedinthisstudyduetoitsrelativelylowcorrelationcoefficientsandrelativelyhighstandarderrors.Thisworkestablishedsuccessfullytherelationshipsbetweentheconstants(slopeorintercept)ofkineticequationsandthebarleyresponsestoKfertilizerinthemultiple-sitefieldexperimentsandK-supplyingstatusofsoilsk,theconstantsofElovich,parabolicdiffusionandpowerfunctionequationswereverysignificantlyorsignificantlycorrelatedtothesoilavailableK,relativeyieldofbarleyandKuptakeofbarleyinNPplot.ItwassuggestedthatthekineticequationconstantscouldbeusedtoestimateK-supplyingpowerofsoils.

简介：Inthispapertheelasticconstantsofgraphiteatelevatedtemperaturewereexperimentallyinvestigatedbyusingthevirtualfieldsmethod(VFM).Anewmethodwaspresentedforthecharacterizationofmechanicalpropertiesatelevatedtemperature.Thethree-pointbendingtestswereperformedongraphitematerialsbyanuniversaltestingmachineequippedwithheatingfurnace.Basedontheheterogeneousdeformationfieldsmeasuredbythedigitalimagecorrelation(DIC)technique,theelasticconstantswerethenextractedbyusingVFM.Themeasurementresultsoftheelasticconstantsat500℃wereobtained.Theeffectontheexperimentalresultswasalsoanalyzed.Thesuccessfulresultsverifythefeasibilityofusingtheproposedmethodtomeasurethepropertiesofgraphiteathightemperature,andtheproposedmethodisbelievedtohaveagoodpotentialforfurtherapplications.

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简介：为Madych和尼尔森在1992提出的Gaussians有很强大的错误界限，是著名的，，它具有form|/(jc)-在哪儿的s(x)\<(Cd)i||/||AC，c是常数，h是Gaussian功能，s是插入内推的功能，并且d被叫充满哪个的距离，粗略地说，测量插值在发生的点的间距，。这错误界限作为d->很快变得小0。常数C和c是很敏感的，他们的一个细微变化将导致错误界限的一个巨大的变化，。数字c能是出现在被计算[9]。然而，C不能被计算，或甚至接近了。这是在光线的基础功能的理论的一个著名问题。这篇论文的目的是回答这个问题，。

简介：ElasticconstantsofNaandLimetalsarecalculatedsuccessfullyfortemperaturesupto350Kandpressuresupto30GPausingaschemewithoutinvolvinganyadjustableparameter.Elasticconstantsareassumedtodependonlyonaneffectivepairpotentialthatisonlydeterminedbytheaverageinteratomicdistance.Temperaturehasaneffectonelasticconstantsbywayofchargingtheequilibrium.Theelasticconstantscanbeobtainedbyfittingtherelationshipbetweentotalenergyandstraintensorusingthenewsetoflatticeparametersobtainedbycalculatingdisplacementofatomsatthefinitetemperatureandatafixedpressure.Therelationshipbetweentheeffectivepairpotentialandtheinteratiomicdistanceisfittedbyusingaseriesofdataofcohesiveenergycorrespondingtolatticeparameters.

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简介：TheISMbandat2.4GHzhasmostlybeenusedorplannedforindoorsystems.Thisbandisalsoattractiveforoutdoorsystemsowingtotheeaseofthesystemdeployment,asnofrequencylicensesarerequired.Inthispaper,amultiplesuccessiveinternalmultireflectionmodelisusedtoestimatethecomplexelectricpermittivityat2.4GHzband.Toobtainthedata,measurementsareperformedat160MHzbandwidthcenteredabout2.4GHzusingavectornetworkanalyzer,whichprovidesinformationabouttheamplitudeandphaseoftransmissioncoefficient.Severalsamplesofeachmaterialaremeasuredandtheresultsvaryfromsampletosample.Ithasalsobeenfoundthatsomeobstacleshavepolarizationbehaviour.

简介：在这个工作，我们试着为Mumford-Shah分割模型使用所谓的Piecewise经常的水平集合方法(PCLSM)。为图象分割，Mumford-Shah模型需要为分割发现这些区域和在内的经常的价值这些区域。以便为这个目的使用PCLSM，我们需要作为最小化变量用水平集合函数和经常的值解决一个最小化问题。在这个工作，我们在一个模型上测试以便我们仅仅需要关于水平集合功能最小化，即，我们不需要关于经常的价值最小化。坡度降下方法和牛顿方法被用来为最小化问题解决theEuler-Lagrange方程。数字实验被给显示出新模型和算法的效率和优点。

简介：Thispaperpresentsanexactsolutionofthecracktipfieldinfunctionallygradientmaterialwithexponentialvariationofelasticconstants.ThedimensionlessPoisson'sratiosv0oftheengineeringmaterials(iron,glass...)arefarlessthanone;therefore,neglectingthem,onecansimplifythebasicequationandtheexactsolutioniseasytoobtain.Althoughtheexactsolutionforthecasev0≠0isalsoobtained,itisverycomplicatedandthemainresultisthesamewiththecasev0=0(itwillbedealtwithinAppendixⅦ).Ithasbeenfoundthattheexponentialtermexp(ax+by)intheconstitutiveequationsbecomesexp(ax/2+by/2-kr/2)intheexactsolution.

简介：Thepolymerizationof1-octeneinitiatedbymethylalumoxane(MAO)-activatedNi(Ⅱ)-based-α-diiminecomplexes[(2,6-i-Pr)_2C_6H_3-DAB(An)]NiBr_2wasinvestigated.Usingthiscatalyst,poly(1-octene)swithmolecularweightbetween100×10~3and400×10~3andpolydispersity(M_w/M_n)between1.3and1.5weresynthesizedsuccessfullybyvaryingreactiontimeatroomtemperature.Thepoly(1-octene)swereamorphouspolymersandcouldbewellsolubleintetrahydrofuran(THF).Afterfractionalprecipitation,poly(1-octene)swithnarrowmolecularweightdistributions(M_w/M_n≤1.12)wereobtained.Theirweight-averagemolecularweightsweremeasuredbygelpermeationchromatography(GPC)inconjunctionwithonlinemodelBI-MwAmultianglelaserlightscattering(MALLS),andtheirintrinsicviscositiesweremeasuredbyMaron'ssingle-pointmethod.ThekandavaluesinMark-Houwinkequation[η]=KM~αinTHFat40℃were0.089mL/gand0.61respectively.

简介：Theopticalparametersforthreesamplesofintrinsic,dopedSianddopedMg（AlxGa1-x)yIn1-yPpreparedbytheMOCVDonGaAssubstrateweremeasuredbyusingellipsometryandwerecalculatedbythetwo-layerabsorptionfilmmodel.Theresultsobtainedwerediscussed.Thegrownratesandthicknessofoxidiclayerontheintrinsic（AlxGa1-x)yIn1-yPsurfaceexposedintheatmospherewerestudied.Alineardependenceofoxidiclayerthicknessonthetimewasobtained.

简介：我们介绍自发的对称碎在Pati之间的acouplingbetween的顺序—Salam和电镀物品弱对称苏(4)_(PS)直接X苏(4)_(EW)可伸缩以便在宏大统一精力在联合常数之中建立一种算术地一致的关系。与减已知的夸克和雷普顿的雷普顿量数字那里的酒吧的价值，由传递includingright的中微子，我们能在直到电磁的U(1)_(他们)的层次放大的不同精力发现混合角度关系。

简介：Thegeneralprocedurebasedonthepotentiometrictitrationhasdeveloped.Accordingtotheprocedure,therationalequilibriumconstantsoftheionexchangereactionsRH/Na,RH/Ca,RH/Sr,RH/BafortheweakacidcationexchangeresinD725andROH/ClfortheweakbaseanionexchangeresinD705havebeendetermined.

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简介：Anewapproachtodeterminealltheelectro-elasticconstantsofthepiezoelectriccrystalsinclass4mmhasbeenputforward.Asanexample,alltheconstantsofLithiumTetraborate（Li2B4O7）crystalhavebeenmeasuredbymeansoftheapproach.Theoutstandingadvantageoftheapproachisthatiton-lyneedstoemployinmeasurementthreecrystalplatesdifferentlyoriented.

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