简介:Inthispaper,themultiplestochasticintegralwithrespecttoaWienerD’-processisdefined.AndalsoitisshownthatforaD’-valuednonlinearrandomfunctionalthereexistsasequenceofmultipleintegralkernelssuchthatthenonlinearfunctionalcanbeexpandedbyseriesofmultipleWienerintegralsoftheintegralkernelswithrespecttotheWienerD’-process.
简介:这份报纸主要担心联合由一个主要僵硬平台,多重充满液体的圆柱的坦克,和很多个灵活附器组成的一只复杂太空船的动态分析。第一,在坦克的液体的搬运人潜力功能方程根据墙边界条件被推出。通过采用FourierBessel系列扩大方法,动态边界条件在上一弯在低严肃的环境下面免费表面被转变到一般简单微分方程和僵硬液体的联合sloshing在坦克的液体的动态州的方程被获得。僵硬液体的联合方程的州的向量与相对潜在的功能的形式的坐标和波浪高度的形式的坐标被填写。基于BernoulliEuler横梁理论和DAlemberts原则,灵活附器的僵硬灵活的联合动态州的方程直接被导出,并且调遣灵活附器的并列变换矩阵精确作为变化时间被计算。然后,太空船的全面系统的联合动力学状态方程模块化地以伪坐标借助于Lagranges方程被造。最后,联合一只典型复杂太空船的动态表演被学习。介绍方法的可获得性和可靠性也被证实。图形的摘要
简介:活跃多重调节集体水坝pers(叫作AMTMD),它与相同僵硬和抑制系数由几活跃调节集体水坝pers(ATMD)组成但是变化质量和控制力量,最近被建议了在地面加速下面压制结构的不受欢迎的摆动。AMTMD能显著地改进多重调节集体水坝pers(MTMD)的表演并且在比单个ATMD减少结构摆动也是更有效的,这被显示出。尽管有这,AMTMD的好性能(包括从频率域分析说明的singleATMD)不能必然在时间域翻译成好地震减小行为。调查这些现象,AMTMD与三ATMD控制的一个三故事的钢结构模型在SIMULINK被实现并且使遭到了到几历史的地震。同样,在考虑下面的结构被假定有僵硬的不确定性,例如±15%它的起始的僵硬,在数字模拟。AMTMD的最佳设计参数被与AMTMD实现一般结构的最大的动态放大倍数(DMF)的最小的值的最小化在频率域获得。为比较目的,一样的反应分析组织与作为壁炉,ATMD也被执行。当与一个单身者相比为结构的ATMD使遭到了到历史的地震时,数值分析和比较证明AMTMD通常显示更好的有效性。特别地,AMTMD能与±1的僵硬的不确定性为结构改进单个ATMD的有效性5%它的起始的僵硬。
简介:Weproposeaphotonicstructurestackedsequentiallybyone-dimensionalphotoniccrystalsandcavities.Thewholestructureiscomposedofsingle-negativeanddouble-negativematerials.TheopticalWannier–Starkladder(WSL)canbeobtainedinalowfrequencyregionbymodulatingthewidthsofthecavitiesinorder.Wesimulatethedynamicalbehavioroftheelectromagneticwavepassingthroughtheproposedphotonicstructure.Duetothedispersivecharacteristicsofthemetamaterials,averynarrowWSLcanbeobtained.Thelong-periodelectromagneticBlochoscillationisdemonstratedtheoreticallytohaveaperiodonamicrosecondtimescale.
简介:AgeopulseseismicsystemwasimplementedtoobtainnewinformationonunderlyingstratabeneaththeYellowRiverDelta.However,owingtotheslippingofseafloorandshallowwater(<25m),freesurface-relatedmultiplesareconflictedwiththeflatprimaries,whichmayinstructtheinterpretersinawrongwayandmakewrongconclusions.Owingtothevariationofmultipleperiods,standardanti-multipletechniquesmaylosetheirpower,suchaspredictivedeconvolution.Surface-relatedmultipleeliminationmethodsareintroducedtoattenuatethemultiplesbasedontheunderlyingwave-equationprinciples.Theresultsjustifiedthemethodonthesingle-channelgeopulseprofile,revealingtherealnatureofthesubsurface.
简介:Weexperimentallyreportonthegenerationofsingleandmultipledissipativesolitonvianonlinearpolarizationrotationtechnique.Thespectrumofthemode-lockeddissipativesolitonexhibitstypicalsteepedgeswithaflattop;thepulsedurationis10.07ps.Itisfoundthatwiththepumppowerincreasingfrom110mWto161mW,thetopofthemode-lockedspectrumbecomesflaterandthe3-dBspectralbandwidthisbroadened,whichindicatesthatthegain-dispersioneffectisloweredunderstrongerpump.However,thefullbandwidthofthespectrumisnarrowed,whichprovesthatthespectralfiltereffectincreasesandovercomestheeffectofself-phasemodulationinducedspectralbroadening.Suchaphenomenonwasnotnoticednorreportedbefore.Ourexperimentalsodemonstratesthatthepulseintervalishighlydependentontheinputpumppower:withpumppowerincreasing,thepulseintervaltendstowardsmoreuniform.Soourobservationqualitativelyanalyzestherelationshipbetweenmode-lockedpulsecharacteristicsandinputpumppower.
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简介:Spacecraftsciencemissionstoplanetsorasteroidshavehistoricallyvisitedonlyoneorseveralcelestialbodiespermission.Theresearchgoalofthispaperistocreateatrajectorydesignalgorithmthatgeneratestrajectoryallowingaspacecrafttovisitasignificantnumberofasteroidsduringasinglemission.Fortheproblemofglobaltrajectoryoptimization,evenwithrecentadvancesinlow-thrusttrajectoryoptimization,afullenumerationofthisproblemisnotpossible.Thisworkpresentsanalgorith...
简介:AbstractAn increasing body of evidence supports the hypothesis that atherosclerosis is caused by multiple factors and mechanisms. A better understanding of the contribution of hypertriglyceridemia or oleic acid to the pathogenesis of atherosclerosis would significantly increase our ability to successfully treat these diseases. We propose that oleic acid promotes atherosclerosis via multiple pathophysiological mechanisms. Here we suggest that (1) atherosclerosis may develop through multiple pathophysiological mechanisms and that this may be a common feature of human diseases; (2) diseases may be the consequence of natural selection or the interaction of internal and external factors; (3) diseases should be recognized with "biological diversity," and that this concept should be introduced into medical education, clinical treatment, drug research and development, and medical research. The work reported here will benefit a new generation of medical trainees and promote the development of the relevant medical fields.
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简介:在在多重线性回归(MLR)之间的季节的降水预报技巧的差别的调查整体并且简单多,模型整体平均数(他们)基于单个模型的预报质量。在以前的研究的差别的可能的原因被分析。以便做学习区域的模拟能力相对一致,有不同时间的关联系数的三个区域为这研究被选择。结果证明导致MLR途径的无能力的原因在不同区域之中变化。在Niño3.4区域,在单个模型以内的强壮的合作线性通常是主要原因。在高纬度区域,然而,没有重要合作线性能在单身的模型的单个模型,而是能力被发现是那么差的它在这个区域为超级整体预报使MLR来临不恰当。另外,当我们比较源于的结果时,注意各种各样的分数大小的使用能导致一些差异是重要的不同多为整体途径建模。
简介:寓言的氡变换广泛地在多重变细被使用了。为了进一步改进氡的精确性和效率,转变,我们开发了高分辨率的氡变换由Abbad基于快、修改的寓言的氡变换介绍了的-f领域。一个新变量的介绍使变换操作员频率无关。因此,我们需要计算变换操作员和它的反的操作员仅仅一次,它极大地改进计算效率。而且,因为primaries和multiples在有在-f域的不同斜坡的直线上是分布式的,我们容易装选择过滤操作符压制multiples。同时,建议方法提供高分辨率的氡变换的优点,它能极大地改进attenuating的精确multiples。数字实验建议multiples很好被压制,primaries的振幅对偏移量特征是维持的井。真实数据处理结果进一步验证方法的有效性和可行性。