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31 个结果
  • 简介:Aquantitativeschemeisputforwardinourworkofforecastingthestormrainfalloftyphoonsforspecificsites.Usingtheinitialparameters,weathersituationsandphysicalquantitiesaswellasnumericalweatherpredictionproducts,theschemeconstructsmultivariate,objectiveandsimilaritycriteriaforenvironmentalfactorsforthetimebetweenthecurrentandforthcomingmomentwithinthedomainofforecast.Throughdefininganon-linearsimilarityindex,thisworkpresentsacomprehensiveassessmentofthesimilaritybetweenhistoricalsamplesoftyphoonsandthosebeingforecastintermsofcontinuousdynamicstatesunderthemultivariatecriteriainordertoidentifysimilarsamples.Thehistoricalrainfallrecordsofthesimilarsamplesareusedtorunweightedsummarizationofthesimilarityindextodeterminesite-specificandquantitativeforecastsoffuturetyphoonrainfall.Samplesresemblingthetyphoonbeingforecastareselectedbydefininganon-linearsimilarityindexcomposedofmultiplecriteria.Trialtestshavedemonstratedthatthisschemehaspositivepredictionskill.

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  • 简介:Theinverserecursionoperator,threenewsetsofsymmetries,andinfinite-dimensionalLiealgebrasforthenonlineardiffusionequationaregiven.SomenonlocalsymmetriesrelatedtoeigenvectorsoftherecursionoperatorФwiththeeigenvalueλiarealsoobtainedwiththehelpoftherecursionoperatorФi=Ф-λi.Usingapartofthesesymmetrieswegettwelvetypesofnontrivialnewsimilarityreduction.

  • 标签: 相似简化 对称简化 非线性扩散方程 逆递推算符 数学物理方法
  • 简介:Themonoclonalantibodyagainstbovinerotavirus(BRV)receptor(BRV-R-mAb)wasusedtoexplorethesimilaritybetweenthereceptorsofBRVandhumanrotavirus(HRV).ELISA,dotimmunobindingassay,cellprotectionassay,solid-phaseassayandimmunohistochemistrymethodwereapplied.BRV-R-mAbboundbothanti-BRVIgGandanti-HRVIgGrespectivelyandcouldprotectMA104cellsagainstBRVandHRVchallenges.Immunohistochemistrytestshowedthattherewererotavirusreceptorsonthesurfacesoffoetalintestinal,trachealmucosaandMA104cellsmembrane.WepurifiedtherotavirusreceptorsonMA104ceils,whichcouldbindbothBRVandHRVinvitro.ItisconcludedthatBRVreceptorandHRVreceptorarehomogenousproteinsandcanberecognizedbybothBRVandHRV.

  • 标签: 轮状病毒受体 人类轮状病毒 病例报告 HRV 抗体
  • 简介:SimilarityforspatialdirectionsplaysanimportantroleinGIS.Inthispaper,theconventionalapproachesareanalyzed.Basedonrasterdataarealobjects,theauthorsproposetwonewmethodsformeasuringsimilarityamongspatialdirections.Oneistomeasurethesimilarityamongspatialdirectionsbasedonthefeaturesofrasterdataandthechangesofdistancesbetweenspatialobjects,theotheristomeasurethesimilarityamongspatialdirectionsaccordingtothevariationofeachrastercellcentroidangle.Thetwomethodsovercomethecomplexityofmeasuringsimilarityamongspatialdirectionswithdirectionmatrixmodelandsolvethelimitationofsmallchangesindirection.Thetwomethodsaresimpleandhavebroaderapplicability.

  • 标签: 空间相似性 光栅数据 空间方向 空间关系矩阵 地图绘制
  • 简介:在这份报纸,调用模糊散开地图(频分多路复用)的一个新奇方法被建议评估动画片类似,它对动画片识别,动画片聚类并且动画片再使用的应用批评。我们发现从异构的来源的特征在动画片类似评价上有不同影响。以便考虑所有特征,一种模糊一致关系被介绍把特征的偏爱顺序变换成偏爱度,重量从是计算的。基于特征和重量,摆平的差别(L2)的和能在任何动画片数据之间被计算。然而,它在一些研究工作被表明了动画片数据集躺在一低维歧管,在哪个L2距离不能直接评估类似。不同于在Isomap,在局部地线性的嵌入保存的本地附近的关系,和附近的点的类似在拉普拉斯算符Eigenmaps保存了的本地人保存的全球测地学的距离,我们采用的散开地图保存散开距离在连接二个数据的长度的所有路径上加。作为后果,这散开距离对噪音不安很柔韧。我们在使用接收装置操作弄弯的动画片分类的实验在重量赋值上显示出模糊一致关系的优秀表演。动画片类似评估上的频分多路复用表演在动画片识别的实验上被测试并且聚类。结果证明频分多路复用能与另外的方法相比更精确并且稳定地评估动画片类似。

  • 标签: 模糊一致关系 相似性评估 扩散距离 卡通 学习 权重计算
  • 简介:Thetheoryofflowsimilarityhasnotbeenwellestablishedforgranularflows,incontrasttothecaseforconventionalfluids,owingtoalackofreliableandgeneralconstitutivelawsfortheircontinuumdescription.Arigorousinvestigationofthesimilarityofvelocityfieldsindifferentgranularsystemswouldbevaluabletotheoreticalstudies.However,experimentalmeasurementsfacetechnologicalandphysicalproblems.Numericalsimulationsthatemploythediscreteelementmethod(DEM)maybeanalternativetoexperimentsbyprovidingsimilarresults,wherequantitativeanalysiscouldbeimplementedwithvirtuallynolimitation.Inthisstudy,thesimilarityofvelocityfieldsisinvestigatedfortherollingregimeofrotatingdrumsbyconductingsimulationsbasedontheDEMandusinggraphicsprocessingunits.ForaconstantFroudenumber,itisfoundthattheparticle-to-drumsizeratioplaysadominantroleinthedeterminationofthevelocityfield,whilethevelocityfieldismuchmoresensitivetosomematerialpropertiesthantoothers.Theimplicationsofthesefindingsarediscussedintermsofestablishingtheoreticalsimilaritylawsforgranularflows.

  • 标签: 旋转滚筒 相似性 颗粒流 数值研究 图形处理单元 数值模拟
  • 简介:Throughaseriesofmodeltestsoffivescalesfor2-Dfreehydraulicjump,theda-taoffluctuatingpressureactingonthefloorlevelwithinthehydraulicjumpwereobtained.Dur-ingtheexperiments,Froudenumbervariedfrom2.94to8.61,andReynoldsnumberrangedfrom2×10~4to6×10~5.Experimentresultsindicatethattheamplitudescaleoffluctuatingpres-sureisthelengthscaleofmodel,i.e.P’=L,whichagreeswithgravitysimilaritylaw:Thefrequencyscaleofthefluctuatingpressureisaunityi.e.,f=1,whichdoesnotsatisfythegravitysimilaritylaw.

  • 标签: SIMILARITY LAW fluctuating PRESSURE HYDRAULIC JUMP
  • 简介:Thesimilaritytheorywassystematicallyintroduced,bycombiningthetheoryandtheanalytichierarchyprocess(AHP),andtakingthedynamicchangesoftwo-stagegreenlandpatchesinShenzhenasanexample,thepatchessimilarityofeachdistrictandeachgreenlandtypewereestimated.Thelocation,shapeandareasofgreenlandunitwereusedasthesimilarityelements.Thenthesimilaritycoefficientscanbedefined.Theoverlappingnumberofgreenlandpatchesindicatedthelocationvariationofgreenland.Theratioofminimumandmaximumshapeindexofgreenlandindicatedtheshapevariationofgreenland.Withthesamemethod,theareasvariationcoefficientwasalsoobtained.Theresultsshowsthatbasedonsimilaritytheoryandmethodtheestimationofgreenlandvariationisfeasible,whichcanprovideeffectivemethodsandaccordanceforthefurtherassessmentofgreenlanddevelopmentinShenzhenSpecialEconomicZone.

  • 标签: SIMILARITY theory green LAND PATCH dynamic
  • 简介:压缩(ZRT/IRT-like蛋白质)和CDF(阳离子散开Facilitator)是主要搬运锌进并且从cytosol的二个大金属transporter家庭。几快速做,CDF运输ers在哺乳动物和各种各样的模型有机体被描绘了,并且许多候选人基因被染色体工程识别了,例如酵母,线虫,水果苍蝇,和斑马鱼。压缩和CDF运输ers的意外功能最近在一些模型有机体被报导了,导致在我们哺乳动物的对应物的功能的理解的主要进展。这里,我们在从代表性的模型有机体获得的真核细胞的压缩和CDF运输ers之中在顺序类似和功能的关系上考察最近的信息。

  • 标签: 基因序列 真核细胞 锌元素 转运机制
  • 简介:Anionomer类型水运的聚氨酯分散(手)被获得从poly(丙烯乙二醇)(PPG),isophoronediisocyanate(IPDI)和通过修改prepolymerisocyanate的dimethylolpropionic酸(DMPA)处理。聚氨酯的二个系列被准备(组A和B)并且一个新预言模型基于灰关系分析被介绍在几个性质上预言原料的影响顺序例如固体内容,粘性,酸数字和聚氨酯的电解稳定性。模型罐头成功地通过设计示范实验在性质上预言原料的影响,这被发现。而且,预言模型的结果证明DMPA在粘性,部分酸价值和电解稳定性起一个关键作用。

  • 标签: 水性聚氨酯分散体 原材料 相似性分析 异佛尔酮二异氰酸酯 性能 预测模型
  • 简介:AsimilarityequationforheattransferonheatsourceelementssituatedintheentranceregioninelectronicequipmentisdevelopedbasedontheexperimentaldataobtainedbySparrowetal.^[4].ThecharacteristicofthesimilarityequationisthattheratiooftheheattransfercoefficientattheentranceregiontothatatthefullydevelopedregionisindependentoftheReynoldsnumber.Itdependsonlyontherownumberoftheelementssituatedintheentranceregion.Anexampleoftheusefulnessofthesimilarityequationispresentedthatdeterminestheheattransferonheatsourceelementsinapowerunitthatcontainsonlyasmallnumberoftheheatsourceelements.

  • 标签: 传热 电子设备 热源元件
  • 简介:Modifiedrefractivity(M)profileisanimportantparametertodescribetheatmosphericrefractionenvironment,aswellasakeyfactorinuniquelyevaluatingelectromagneticpropagationeffects.Inordertoimprovethemodel-derivedMprofileinstable(especiallyverystable)conditions,threenonlinearsimilarityfunctions,namelyBH91,CB05,SHEBA07,areintroducedinthispapertoimprovetheoriginalBabin_V25model,andtheperformancesofthesemodifiedmodelsareverifiedbasedonthehydrometeorologicalobservationsfromtowerplatforms,whicharefinallycomparedwiththeoriginalBabin_V25modelandLocal_HYQ92model.Resultsshowthatintroducingnonlinearsimilarityfunctionscansignificantlyimprovethemodel-derivedMprofile;especially,thenewlydevelopedSHEBA07functionsmanagetoreducethepredictedrootmeansquare(rms)differencesofMandMslope(forboth0-5mand5-40m)by64.5%,16.6%,and60.4%,respectivelyinstableconditions.Unfortunately,thisimprovedmethodreactslittleontheevaporationductheight;incontrast,Local_HYQ92modeliscapableofreducingthepredictedrmsdifferencesofM,Mslope(forboth0-5mand5-40m),andevaporationductheightby76.7%,40.2%,83.7%,and58.0%respectively.Finally,anewrecommendationismadetoapplyLocal_HYQ92andBabin_SHEBA07inverystableconditionsconsideringthatMslopeismoreimportantthanevaporationductheightandabsoluteMvalueinuniquelydeterminingelectromagneticpropagationeffects.

  • 标签: 蒸发管 类似理论 流动侧面关系 nondimensional 类似功能 稳定的边界层 电磁波繁殖
  • 简介:Aimingattheproblemssuchasmorerepeatedlydesignandlongerdesigncycle,inthispaper,thesimilaritytheorywasintroducedtothedesignprocessofthekeystructuresofflotationmachine.TheimpellerandU-shapedtankofflotationmachinesystemwereanalyzedassimilarityunit.Meanwhile,thelevelofsimilarityoftheunitsandthesimilarityofthesystemwerecalculated.BasedontheanalysisoftheimpellerandthesizeofU-shapedtank,thesimilaritycriteriawerederived.Thederivedconclusionsare:(1)Therelationshipbetweenthediameteroftheimpellerandthevolumeofthetankwaspowerfunctionandcalculatedasthesimilaritycriteriaoftheimpeller;(2)TherelationshipbetweentheratiobetweentheU-shapedtank’scross-sectionalareaandimpeller’sdiameterandthevolumeofthetankwaspowerfunctionandcalculatedasthesimilaritycriterionsoftheU-shapedtank.Usingthesimilaritycriterioncombinedwithcomputertechnologyanddatabasetechnologytorealizepartandsystemserializationdesign.Theresultsshowthattheresearchcanavoidrepeatedlydesign,shortendesigncycle,andraisethedesignefficiency.

  • 标签: 相似性准则 设计周期 浮选机 结构 序列化 计算单元
  • 简介:Asthepaceofurbanizationisaccelerating,increasingamountoffloodplainhasbeenprojectedasthefuturecities.Subsequently,urbanfloodingisbeingstudiedbyglobalemergencymanagementexportsduetoitsincreasinglysignificantimpactonus.Someexistingresearchonfloodingemergencymanagementbasedonthecase-basedreasoning(CBR)methodhavemadetremendousprogress,buttheurbanfloodingcasewithitsstratifieddatacharacteristicsisrequiredanewmethodologywhichisdifferentfromtheonesappliedtoflashfloods.So,basedonthecase-basedreasoning(CBR)method,thispaperproposedaCPIE-CBRmodelwithfourlayers,classificationfiltration,punctiformsimilarity,intervalsimilarityandentropyweightmethod,tocalculatethecasesimilarityamongtheurbanfloodingcasewithstratifieddatacharacteristics.ThenwecarryoutthenumericalsimulationwiththerealdataaboutChinaandconductsomecomparisonwithoriginalwayssothatweobservethevalidityandefficiencyofourmodelintheend.

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  • 简介:在这篇文章,为聚集模糊单个意见进一条组一致意见的一个新方法被建议。获得每条单个意见的聚集重量,与另外的专家一起的每位专家的一个一致性索引基于类似和距离被介绍。每位专家的重要性也在聚集的过程被考虑。最后,一个数字例子被举说明过程的效率。

  • 标签: 一致度 模糊个体评价 模糊数 集体舆论评价 集体决定制造 相似性
  • 简介:Wefirstproposeaseriesofsimilaritymeasuresforintuitionisticfuzzyvalues(IFVs)basedontheintuitionisticfuzzyoperators(Atanassov1995).Theparametersintheproposedsimilaritymeasurescancontrolthedegreeofmembershipandthedegreeofnon-membershipofanIFV,whichcanreflectthedecisionmaker’sriskpreference.Moreover,wecanobtainsomeknownsimilaritymeasureswhensomefixedvaluesareassignedtotheparameters.Furthermore,weapplythesimilaritymeasurestoaggregateIFVsanddevelopsomeaggregationoperators,suchastheintuitionisticfuzzydependentaveragingoperatorandtheintuitionisticfuzzydependentgeometricoperator,whoseprominentcharacteristicisthattheassociatedweightsonlydependontheaggregatedintuitionisticfuzzyargumentsandcanrelievetheinfluenceofunfairargumentsontheaggregatedresults.Basedontheseaggregationoperators,wedevelopsomegroupdecisionmakingmethods,andfinallyextendourresultstointerval-valuedintuitionisticfuzzyenvironment.

  • 标签: 群体决策 相似性 模糊值 直觉 应用 步兵战车