学科分类
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500 个结果
  • 简介:在二维的空间R2的bivariate插值在一维的空间R是比那更复杂的,因为没有在R2的连续功能的Haar空间。因此,bivariate插值没为一套任意的不同pairwise点有一个唯一的答案。在这个工作,我们建议取决于点的基础的一种类型以便bivariate插值为不同pairwise点的任何集合有唯一的答案。在这种情况中,bivariate插值的矩阵把半继承因式分解。

  • 标签: 二元插值 SEMI 连续函数空间 一维空间 二维空间 基础类型
  • 简介:基于的一个格子和Green-Ampt(Grid-GA)散布了hydrologic物理模型为洪水模拟被开发并且在半潮湿、半干旱的盆预报。基于从数字举起模型(DEM)和Green-Ampt渗入方法提取的每个格子房间的地形学的信息,Grid-GA模型考虑水内容的再分配,并且由植被和根拦截组成,土壤水分蒸发蒸腾损失总量,经由过量渗入机制的流量产生,流量集中,并且流动路由。土壤潮湿的下坡的再分配明确地在一个格子基础上被计算,并且沿着网络被考虑的河排水在流量路由以内在格子之中浇交换。建议模型和Xinanjiang模型在Luohe河里被用于上面的Lushi盆,黄河的一条支流,与为洪水模拟的4716km2的一个区域。结果证明两个模型在洪水模拟表演很好并且能被用于洪水在半潮湿、半干旱的区域预报。

  • 标签: 流域水文模型 分布式应用 半干旱地区 交流电网 半湿润 遗传算法
  • 简介:Themainresultsofthispaperarestatedasfollows.LetRbeanorderringinthesemi-primaryringQ.SupposethatRsatisfiesthemaximalconditionfornilrightidealsofR,Thenwehave(i)ifanidealIofRhasafinitelengthasrightR-module,thenIalsohasafinitelengthasleftR-module;(ii)denotebyA(R)theArtinianradicalofR,andNthenilradicalofR,thenA(R)+N/N=A(R/N),ifRsatisfiesthecommutativecondi-tiononthezeroproductofprimeidealsofB.

  • 标签: COMMUTATIVE MAXIMAL stated RINGS length finitely
  • 简介:Asemi-structureddocumenthasmorestructuredinformationcomparedtoanordinarydocument,andtherelationamongsemi-structureddocumentscanbefullyutilized.Inordertotakeadvantageofthestructureandlinkinformationinasemi-structureddocumentforbettermining,astructuredlinkvectormodel(SLVM)ispresentedinthispaper,whereavectorrepresentsadocument,andvectors'elementsaredeterminedbyterms,documentstructureandneighboringdocuments.TextminingbasedonSLVMisdescribedintheprocedureofK-meansforbriefnessandclarity:calculatingdocumentsimilarityandcalculatingclustercenter.TheclusteringbasedonSLVMperformssignificantlybetterthanthatbasedonaconventionalvectorspacemodelintheexperiments,anditsFvalueincreasesfrom0.65-0.73to0.82-0.86.

  • 标签: HTML语言 XML语言 半结构文件模型 版本开采 结构信息
  • 简介:ThemethodsforprotectingInPsurfaceagainstdegradationduringannealing,includingencapsulantandencpsulant-freetechniques;rapidthermalan-nealingofInPimplantedlayers;implantedionspeciesandsomeprofilesoftypicaldopants,etc.,theyareallthekeytechniquesconcerningionimplantationintose-mi-insulatingInP,andhavebeenreviewedsyntheticallyaswell.

  • 标签: 离子注入 退火 表面处理 半绝缘材料 磷化铟 半导体
  • 简介:Weathermodelsareessentialtoolsforcheckingoftheeffectoftheweatherelementsintermsoftheireffectontheproductionofthecrop.Thisresearchisanattempttoseetheeffectofonlytwovariablesi.e.,temperatureandrainfallforthedivisionFaisalabad(semitropicalregionofPakistan).Themodelfittedisofthelinearform:thevaluesofa,b,chavebeenfound.Theexpectedyieldhasbeencalculatedbyusingthearidityindices(X1andX2)andtheresultintheformofcoefficientofdeterminationR2hasbeenfoundequalto0.166.Thesignificanceoftheregressioncoefficienthasbeentested,whichshowsthatthecontributiontotheyieldfromaridityindexatgerminationandthatatripeningissignificant.Thewheatyieldsaretheresultsofawidevarietyofvariables,mostofwhichshowvaryingdegreeofrelationshipwithoneanother,somepositiveandsomenegativeintermsofoutput.Thesevariablesmaybetechnology,fertilizers,pesticides,epidemics,kindsofseedsused,market

  • 标签: TROPICAL WEATHER Pakistan fertilizers wheat PESTICIDES
  • 简介:精确水动力学计算为半能沉入水中是批评的支持海洋资源的现代快速的探索和抽取。以便加速水动力学计算,线建模结构被分开成结构的部分然后适合到不一致的合理B花键(NURBS)。这样,鞠躬和严厉的节线被产生。部分的交叉当模特儿然后与通用建模工具MSC.Patran被做。网孔是模型上的gererated以便在关节上获得交叉的点,然后这些点被适合到NURBS。下次,补丁表示方法被采用产生弄湿的表面和内部免费表面的网孔。表面上的速度潜力独立是计算的,在不规则的频率效果在水动力学系数的计算被处理的基础上。最后,运动反应半能沉入水中被计算,并且以便改进垂直运动的计算,一个抑制术语在垂直方向被加。结果证明上述方法能产生精确地代表弄湿的表面的好网孔一半能沉入水中并且因此改进水动力学计算的精确性。

  • 标签: 流体力学 花键 表面拟合 半潜水器 不规则频率
  • 简介:Fortheglobalandstructuralfatiguestrengthanalysisofasemi-submersibleplatform,waveloadsunderdesigncon-ditionsarecalculatedbyuseofthethree-dimensionalboundarydementmethod.Methodsforcalculatingtheforward-speedfree-surfaceGreenfunctionarediscussedandacomputerprogramwiththisGreenfunctionisdeveloped.Accordingtothespecialrules,thewaveloadsunderseveraltypicaldesignconditionsoftheplatformarecalculated.Themaximumverticalbendingmoment,torsionmomentandhorizontalsplitforcearedeterminedfromaseriesofcontourmapsofwaveloadsforthewaveperiodof5to18secondsatacertainintervalandthewavephaseofO°to360°atacertaininterval.Thewaveheightisdeterminedbythefunctionofwaveperiodwithagivenexceedanceprobability.Themaximumwaveloadsunderthecombinationofwaveparametersareusedastheinputofhydrodynamicpressureinthethree-dimensionalfiniteelementanalysisprocess.Thetransferfunctionsofwaveloadsontheplatformareusedforthefatiguestrengthanal-ysisoftheK-tubularjointandthesub-modelofthestructure.

  • 标签: WAVE and WAVE load boundary ELEMENT
  • 简介:Thebreakdownandfoundationofgeostrophicbalanceisoneoftheimportantmovementsinthemid-andhigh-latitudeatmosphereandoceans.Inthetropicalarea,thevalueofCoriolispa-rameterissosmallthatitisdifficulttosatisfythebi-geostrophicequilibriumbetweenthepressureandvelocityfields.However,inthetropicalarea,thezonalvelocityofsomemotionsintheatmo-sphereandoceansislarge,sotheCoriolisforceisnotsmall,geostrophicbalancecanexistinzonaldirection,i.e.semi-geostrophicbalance.Furthermore,inthedominantareaofHadleycirculationintheatmosphereortheareaneartheoceanmeridionalboundary,themeridionalvelocityislarge,sogeostrophicbalancecanalsoexistinmeridionaldirection.Inthispaper,theprocessofthedis-persionofinertialgravitywaveandthefoundationofsemi-geostrophicbalancearefirstdiscussed.Second,theadjustmentprocessbetweenthevelocityandpressurefieldsafteradaptationisalsoviewed,andthescalecriterionofthesemi-geostrophicadaptationisdiscussed,i.e.forthemotionwithmeridionalscalegreaterthantheequatorialRossbyradiusofdeformation,thevelocityandpressurefieldsafteradaptationchangetofittheinitialpressurefield;onthecontrary,thefieldschangetofittheinitialzonalvelocityfield,andthestrengthofthefieldsafteradaptationdependsonthezonalscale.

  • 标签: dispersion of INERTIAL GRAVITY wave semi-geostrophic
  • 简介:Thispapersetupaclassofnonlinearsemi-discreteage-structuredmodelofpopulationevolutionsystem,byusingtheconceptofcriticalproliferationrate,itdiscussedthestabilityoflinearandnonlinearpopulationsystem,anditobtainthesufficiencyconditionsofthestablefornonlinearsemi-discretesystem.

  • 标签: 非线性 半离散 人口演变 稳定性 年龄结构
  • 简介:Wepresentasemi-customdesignmethodologybasedontransistortuningtooptimizethedesignperformance.Comparedwithothertransistortuningapproaches,ourtuningprocesstakesthecross-talkeffectintoaccountandprominentlyreducesthecomplexityforcircuitsimulationandanalysisbydecomposingthecircuitnetworkutilizinggraphtheory.Furthermore,theincrementalplacementandroutingforthecorrespondingtransistortuninginconventionalapproachesisnotrequiredinourmethodology,whichmightinducetiminggraphvariationandadditionaliterationsfordesignconvergence.Thismethodologycombinestheflexibleautomatedcircuittuningandphysicaldesigntoolstoprovidemoreopportunitiesfordesignoptimizationthroughoutthedesigncycle.

  • 标签: 微电子学 晶体管 回路分解 最佳化设计
  • 简介:—Thepresentstudyinvestigatestheinteractionofsteepwaveswithsemi-circularbreakwaterwiththecomplexplane'sCauchyboundaryintegraltheorem.Theboundaryintegralmethodisusedtotransformthecalculationinfluiddomainintoitsboundaryalone.Inthecalculationthecomputationdo-mainismovedwiththepropagationofwaves.AnumericalsolutionisobtainedforincidentStokeswavespassingthesubmergedobstacles.Thismethodhasbeenextendedtothecalculationofwaverun-uponaslopeforestimatingwaveovertopping.

  • 标签: SEMI-CIRCULAR BREAKWATER water WAVES interaction CAUCHY
  • 简介:减少形成的负担,springback的删除,象生产高力量一样增加表的formability分开是主要原因使用热踩过程。热踩过程和22MnB5钢分别地是现状过程和等级;然而新奇的过程和钢等级在考虑下面。在当前的研究,在半和充分热的踩过程下面的钢等级MSW1200空白的行为被描绘。在半热的踩的过程期间,空白第一被加热到大约650的温度

  • 标签: 烫金工艺 烫印 淬火处理 机械性能 成形性 成形载荷
  • 简介:Forasemi-supervisedclassificationsystem,withtheincreaseofthetrainingsamplesnumber,thesystemneedstobecontinuallyupdated.Asthesizeofsamplessetisincreasing,manyunreliablesampleswillalsobeincreased.Inthispaper,weusefuzzyc-means(FCM)clusteringtotakeoutsomesamplesthatareuseless,andextracttheintersectionbetweentheoriginaltrainingsetandtheclusterafterusingFCMclustering.Theintersectionbetweeneveryclassandclusterisreliablesampleswhichwearelookingfor.Theexperimentresultdemonstratesthatthesuperiorityoftheproposedalgorithmisremarkable.

  • 标签: FCM聚类 监督分类 样品 模糊C-均值 分类系统 样本数
  • 简介:Inthispaper,wehavesuggestedseveralinterpolatingformulaewhichareconvinientforvectorcom-puterstoperformvectorcalculation.Analysisshowsthatforasimpleadvectiveproblem,thesemi-Lagrangianschemesconstructedwiththeseformulaearelinearlyunconditionallystable.Moreover,wehavediscussedthenonlinearcomputationalchaosinthesemi-Lagrangianschemes.Itisfoundthatforasimplenonlinearadvectiveproblem,wecanintroducephysicallyunrealanddirectinteractionofthreeormorewaves.Nu-mericaltestsindicatethatthisphenomenonhascertaininfluenceonthesimulatedresultsoftwo-dimensionalBenardconvection.

  • 标签: FORMULAE physically CHAOS convection absolutely LAGRANGIAN