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简介：Tohaveaclearerpictureofmechanismsresponsibleforthedeviationoftropicalcyclone(tobesimplifiedasTChereafter)tracks,thecurrentworkassumestheTCasacircularvortexwitharadiusofR.AgeneralmotionequationofTCisthendeterminedbyaveragingitshorizontalmotionequationoverthesentireregionofTC.Inthemeantime,withthemovingtrackofTCassumedasacharacteristicarc,thecurvatureequationisderivedforthetrackofmovementandpatternsofitsdeviationduetoTCstructureandvariationarediscussed.Theresultshowsthatthescale,size,maximumwindspeedandradiusarefactorscausingthedeviationofTCtracks.Inaddition,asymmetricstructureofTCisalsoimportantforthedeviationoftracks.Theresults,achievedwithhypothesis,agreewithfactsinsomecasesbutdisagreewiththeminothers,whicharetobeverifiedwithmoreobservationsornumericalsimulations.

简介：1.IntroductionMotiffedbysomelargedeviationresultsforbranchingparticlesystem,thelargedeviationresultsforsuperprocesseshavebeeninvestigatedrecently.CoxandGffeathll]startedtheinvestigationofthelargedevistionforcriticalbranchingBrochanmotion.IscoeIZIcarr...

简介：Regularizationmethodisaneffectivemethodforsolvingill-posedequation.Inthispapertheunbiasedestimationformulaofunitweightstandarddeviationintheregularizationsolutionisderivedandtheformulaisverifiedwithnumericalcaseof1000sampledatabyuseofthetypicalill-posedequation,i.e.theFredholmintegrationequationofthefirstkind.

简介：在这篇论文，我们为随机的变量的随机的和扩大并且改善大偏差的一些结果。让{Xn；n≥1}是有普通重尾巴的分发功能F和有限吝啬的μ∈的非否定、独立、相等分布式的随机的变量的一个序列R+,{N(n)；n≥0}是有参数p∈的否定二项式的分布式的随机的变量的一个序列(0，1)，n≥0，让{M(n)；n≥0}是有紧张λ>的一个泊松过程0。想{N(n)；n≥0}，{Xn；n≥1}并且{M(n)；n≥0}是互相独立的。给S(n)写=。在假设F∈下面C，我们证明一些是大偏差结果。这些结果能在保险和金融被用于某些问题。

简介：Small-angleX-rayscattering(SAXS)usingsynchrotronradiationasX-raysourcehasbeenemployedtocharactcizcthemicroscopicstructrureoforgano-modifiedmesoporousmolecularsieves(organo-MSU-X)preparedbyaone-pottemplate-directedsynthesis.ItisshownthattheSAXSprofileishardlyconstantwithPorod’slawshowinganegativeslope,i.e.,negativedeviation.Thissuggeststhatthereisdiffuseinterfaciallayerlocatedbetweentheporesandthematrix.Thissuggeststhattheorganicgroupsremaincovalentlylinkedtothematrix,asindicatedby^29SiCPMASNMRandFT-IR.Theaveragethicknessoftheinterfaciallayerwasfoundtobeabout1nmforeachofthethreesampleswithdifferentkindsandthesameamounts(20?oforganicgroups.Thiskindofmaterialhasalsobeenprovedtopossessbothsurfaceandmassfractalstructureoftheamophousporoussilicamaterials.2001ElsevierScienceB.V.Allrightsreserved.

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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。

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简介：Theresultsofasimplecomputationalmodelfordifferentialsettlingarepresentedillustratingthesignificantrolethatparticlesizedistributionplaysincollisionfrequencyandsedimentationrateofparticlesinaquiescentenvironment.Themodeltracksalargenumberofparticles(order10~5)withlog-normallydistributeddiameters,astheysettleattheirStokessettlingvelocities.Particlecollisionsaredetectedandresultinlargerparticlesthatfallmorerapidly.Anumberofsimplifyingassumptionsaremadeinthemodelinordertoavoidempiricalcorrelationsforphenomenasuchascollisionefficiencyandparticleshape.Thesesimplifyingassumptionswereneededtoisolateandquantifytheroleoftheparticlesizedistribution.Simulatedconcentrationprofilesindicatethat,evenintheabsenceofcollisions,thestandarddeviation(σ_D)oftheparticlesizestronglyinfluencesthebulkmasssettlingrateas,forlargerσ_D,moremassisconcentratedinlarger,fasterfallingparticles.Thecollisionfrequencyisalsoastrongfunctionofσ_D.Foragivenmassconcentrationthecollisionfrequencyfirstincreaseslinearlywithincreasingσ_Dasgreatervariationinparticlesizeleadstogreatervariationinparticlevelocity,andshortertimesforparticlestocatcheachother.Forlargerσ_Dmoremassisconcentratedinlargerparticles,so,foragivenmassconcentration,therearefewerparticlesperunitvolume,increasingthemeandistancebetweentheparticlesandreducingthecollisionfrequency.Theimplicationsoftheseresultsforsedimentationmeasurementusingopticalattenuationtechniquesarediscussed.

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简介：AIM:Toevaluatewhetherglaucomatousvisualfielddefectparticularlythepatternstandarddeviation(PSD)ofHumphreyvisualfieldcouldbeassociatedwithvisualevokedpotential(VEP)parametersofpatientshavingprimaryopenangleglaucoma(POAG).METHODS:VisualfieldbyHumphreyperimetryandsimultaneousrecordingsofpatternreversalvisualevokedpotential(PRVEP)wereassessedin100patientswithPOAG.ThestimulusconfigurationforVEPrecordingsconsistedofthetransientpatternreversalmethodinwhichablackandwhitecheckerboardpatternwasgenerated(fullfield)anddisplayedonVEPmonitor(colour14')byanelectronicpatternregeneratorinbuiltinanevokedpotentialrecorder(RMSEMGEPMARKII).RESULTS:Theresultsofourstudyindicatethatthereisahighlysignificant(P<0.001)negativecorrelationofP100amplitudeandastatisticallysignificant(P<0.05)positivecorrelationofN70latency,P100latencyandN155latencywiththePSDofHumphreyvisualfieldinthesubjectsofPOAGinvariousagegroupsasevaluatedbyStudent’st-test.CONCLUSION:ProlongationofVEPlatenciesweremirroredbyacorrespondingincreaseofPSDvalues.Conversely,asPSDincreasesthemagnitudeofVEPexcursionswerefoundtobediminished.

简介：三个功能的模特儿，多项式，光谱分析，和修改AR当模特儿，基于从双向卫星时间和频率转移导出的数据顺序在恰当、预言的钟偏差被学习并且比较。柔韧的当量被使用，它控制无关的观察的重要影响。一些结论证明柔韧的评价的预言精确比LS的好。从弄平的观察计算的预言精确比从采样观察计算了高。作为在钟偏差顺序的明显的时期变化的一个计数，多项式模型的预言的价值是难以置信的。光谱分析模型的预言精确是很低的，但是主要时期能是坚定的。6小时的推测间隔的预言RMS是1ns左右，当修改AR模型被使用时。

简介：决定RNA干扰(RNAi)是否能堵住细胞毒素的T淋巴细胞抗原4(CTLA4)在在vitro的人的淋巴细胞并且支持IFN-2和IL-2分泌物，三小介入RNA(siRNAs)基于人的CTLA4和transfected的目标特性序列被选择进长期的HBV病人的人的淋巴细胞。作为结果，人的CTLA4mRNA的表示被所有三siRNAs高效地压制。与否定控制(siRNA-co)相比，siRNA-1最高效地禁止了CTLA4的表达式并且在进一步的学习被使用。IFN-2和IL-2的表情是upregulated，IL-4的水平与空白的控制相比在有siRNA-1的淋巴细胞transfected是几乎未改变的。这些结果显示siRNA-1导致了IFN-2和IL-2分泌物，它是Th1/Th2的主要回答。在一个结论，RNAi显著地在vitro在人的淋巴细胞压制了人的CTLA4mRNA的表示，并且能导致Th1/Th2反应。它能是为长期的HBV感染的新治疗学的策略。