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.

简介：ＧｅｏｓｔｒｏｐｈｉｃＷａｖｅＣｉｒｃｕｌａｔｉｏｎｓ（Ｅｎｇｌｉｓｈｅｄｉｔｉｏｎ）ＹｏｎｇＬ．ＭｃＨａｌｌ（Ｄｅｐｔ．ｏｆＥａｒｔｈ，ＡｔｍｏｓｐｈｅｒｉｃａｎｄＰｌａｎｅｔａｒｙＳｃｉｅｎｃｅｓ，ＭＩＴＰｕｂｌｉｓｈｅｄｂｙＣｈｉｎａＭｅｔｅｏ...

简介：Apreviouslydevelopedmodelofa2-dimensionalairflowwithconstanthorizontalshearisusedtoestimeatetheaccuracyofthegeostrophicmomentumapproximationbycomparisonofexactsolutionswhenexistwithapproximateones.

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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。

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简介：高度表并且在situ，数据被用来估计吝啬的表面在沿着115牲湥?潺慮l的节的带的因地球自转而引起的电流？？

简介：用有1.875X1-875的决定的T63L16分析数据，纬度和经度的度从国家气象学的中心(NMC)和热带气旋的真实中央位置信息获得了(此后叫作TC)由NMC数了，在在1996的25TC的126个次层次的基本环境因地球自转而引起的流动是计算的。流动的竖直分布特征被分析。而且，真实TC的偏差从流动追踪(作为也就是，此后驾驶偏差参考了在TC的真实中央位置和根据驾驶计算的位置之间的偏差流动)也被调查。如果领域过去常推测驾驶流动是不同的，结果证明驾驶偏差将是不同的。现在的纸获得最佳领域尺寸计算驾驶流动。驾驶偏差与自己驾驶TC的流动和起始的纬度和紧张的速度有关，这被发现，并且那个TC运动与vertical有关系砍环境因地球自转而引起的流动的结构。结果也证明驾驶流动的最佳是从1000hPa的深层的平均基本流动到200hPa。有原则和特征将帮助做TC运动的精确预报的这些的知识。

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。

简介：ThesecondauthorstudiedthenonlinearstabilityofN-layerquasi-geostrophicflowsubjecttoperturbationsofparametersandinitialdata,andestablishedthestabilitycriteriafortheflowinquestion,whichinvolvefindingoutthelowesteigenvalueofanellipticboundaryvalueproblem.Inthispaperwhenthedomainisaperiodiczonalchannel,aformulaofthelowesteigenvalueisestablished,whichisusefulforfurtherstudiesandpracticalapplications.

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.

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.

简介：ThemethodsforprotectingInPsurfaceagainstdegradationduringannealing,includingencapsulantandencpsulant-freetechniques;rapidthermalan-nealingofInPimplantedlayers;implantedionspeciesandsomeprofilesoftypicaldopants,etc.,theyareallthekeytechniquesconcerningionimplantationintose-mi-insulatingInP,andhavebeenreviewedsyntheticallyaswell.

简介：Byuseofgeostrophicmomentumapproximation,theanalyticalexpressionsofthewinddistributionwithintheplanetaryboundarylayerandtheverticalvelocityatthetopoftheboundarylayerareobtainedwhenthedistributionofeddytransfercoefficientkisdividedintothreesections:k1z（z0≤z

简介：FourobservedblockinganticyclonesindifferentregionsoftheNorthernHemispherearein-vestigated.Analysesshowthatthereexistdistinctdifferencesinthemaintenanceofthetime-meanquasi-geostrophicpotentialvorticity(PV)lowin300hPawithinblockingareas.IntwoPacificblockingcases,thePVadvectionbytime-meanflowtendstoflowthePVlowtonorthwesternpartoftheblockinghighs,andthusisbeneficialtothemaintenanceoftheblockings’strength.Thetransferbytransienteddiesactstobalancetheeffectofthetime-meanflow.IntheAtlanticandAlaskablockingcases,however,theadvectionofmeanflowtendstoflowthePVloweastward.ThePVtransferbytransienteddiesactstoflowpotentialvorticitylowtothewesternpartoftheblockingridgesandalsotobalancethetime-meanflow’seffect.Thus,inthelattertwocases,itisthetransferbythetransienteddiesthatactstomaintaintheblockings.

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

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。

简介：Fortheglobalandstructuralfatiguestrengthanalysisofasemi-submersibleplatform,waveloadsunderdesigncon-ditionsarecalculatedbyuseofthethree-dimensionalboundarydementmethod.Methodsforcalculatingtheforward-speedfree-surfaceGreenfunctionarediscussedandacomputerprogramwiththisGreenfunctionisdeveloped.Accordingtothespecialrules,thewaveloadsunderseveraltypicaldesignconditionsoftheplatformarecalculated.Themaximumverticalbendingmoment,torsionmomentandhorizontalsplitforcearedeterminedfromaseriesofcontourmapsofwaveloadsforthewaveperiodof5to18secondsatacertainintervalandthewavephaseofO°to360°atacertaininterval.Thewaveheightisdeterminedbythefunctionofwaveperiodwithagivenexceedanceprobability.Themaximumwaveloadsunderthecombinationofwaveparametersareusedastheinputofhydrodynamicpressureinthethree-dimensionalfiniteelementanalysisprocess.Thetransferfunctionsofwaveloadsontheplatformareusedforthefatiguestrengthanal-ysisoftheK-tubularjointandthesub-modelofthestructure.

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