简介：Spacecraftsinperiodicorquasi-periodicorbitsnearthecollinearlibrationpointsareprovedtobeexcellentplatformsforscientificinvestigationsofvariousphenomena.Sincesuchperiodicorquasi-periodicorbitsareexponentiallyunstable,thestation-keepingmaneuverisneeded.Astation-keepingstrategywhichisfoundbyananalyticalmethodispresentedtoeradicatethedominantunstablecomponentofthelibrationpointtrajectories.Theinhibitforcetransformstheunstablecomponenttoastable...

简介：Anovelimagestabilizationsystemispresented,whichconsistsofaglobalfeaturepointtrackingbasedmotionestimation,aKalmanfilteringbasedmotionsmoothingandanimagemosaicbasedpanoramiccompensation.Theglobalmotionisestimatedusingfeaturepointmatchinganditerationwiththeleast-squaremethod.Then,theKalmanfilterisappliedtosmooththeoriginalmotionvectorstoeffectivelyalleviateunwantedcameravibrationsandfollowtheintentionalcamerascan.Lastly,thelossinformationofim...

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简介：Firstly,thispaperreviewsHall'stheoryofbootstrapcriticalpoints(Hall,1988)andtheEdgeworthexpansionforthemetrodirectionσ=μ(Fn)ofdirectionaldata(Wu&Deng,1996),andthenappliesHall'sresultstostudysixbootstrapconfidenceintervalsforcircularmeandirectionμ=μ(F).OurresultsshowthatSTUD-intervalandABC-intervalarebothsecond-ordercorrect.ForyonMisespopudationM(μ,k),wefindthatsixbootstrapconfidenceintervalsaxeseeond-ordercorrectliketheapproximatenormalconfidenceinterval,andSTUD-intervalisthird-ordercorrect.

简介：目的将加耳的点在对待melasma粘住观察针灸的临床的功效和安全。有melasma的43个合格题目被针灸加耳的点粘住干涉的方法，10作为一堂处理功课预定，与在每二堂功课之间的35d的间隔。治疗学的功效分别地在1，2和3堂处理功课以后被分析。有处理路线，显著地有效的率和全部的有效的率的增加的结果也正在增加。在3堂处理功课以后的43个题目，表皮的类型有最高的显著地有效的率和全部的有效的率，然后它的混合类型的子类型IV和真皮的类型，和混合类型的子类型III有最低的显著地有效的率和全部的有效的率。结论针灸正耳的点粘住在对待melasma有效、安全，但是不同类型有不同治疗学的功效。

简介：简单谎言点对称减小过程被用来无穷地获得许多对称到联合KdV方程的一个新integrable系统。用方程的某symmetrysubalgebra，重要类似减小的五种类型被谎言组途径的优点获得，并且获得联合KdV方程的丰富的答案，例如独居的波浪答案，指数的答案，合理答案，多项式答案，等等。

简介：6月7日，互联网安全解决方案供应商CheckPoint软件技术有限公司在美国宣布推出ConnectraNGX，这是其SSLVPN解决方案的增强版本。ConnectraNGX充分发挥了CheckPoint最近推出的NGX平台的全新连接功能，以及支持中央化安全监控及维护的SmartCenter。ConnectraNGX有下列特点：

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简介：ＶＡＰＯＲＩＺＡＴＩＯＮ　ＨＥＡＴ　ＡＴ　ＮＯＲＭＡＬ　ＢＯＩＬＩＮＧ　ＰＯＩＮＴ　ＡＮＤ　ＭＯＬＥＣＵＬＡＲ　ＴＯＰＯＬＯＧＹ　ＦＯＲ　ＰＡＲＡＦＦＩＮＳＶＡＰＯＲＩＺＡＴＩＯＮＨＥＡＴＡＴＮＯＲＭＡＬＢＯＩＬＩＮＧＰＯＩＮＴＡＮＤＭＯＬＥＣＵＬＡ...

简介：-Accordingtobasicequationsoffluidmechanics,thispaperpresentsaunifiedvariationalprincipleoffluidmechanics(UVPFM)byusingtheoptimizationmethodofweightedresiduals(OMWR).Theadvantagesareasfollows,theestablishmentofthefunctionalandthevariationalprincipleiseasy,itcanchangevariousproblemsoffluidmechanicsderivedbybasicequationsintoaunifiedoptimizationproblem,andthesolutionistheoptimumoneinsomesense.AccordingtotheOMWRforthesolitarysubdomain,thispaperusesUVPFMontoanysolitarysubdomainandgivesthesolutionofthehydrodynamicsequationwhichissuitableonlyforthatsolitarysubdomain.AccordingtotheOMWRforsolitarypoint,thispaperusesUVPFMtoanysolitarypointandgivesthesolutionofthehydrodynamicsequation(pointsolution)whichissuitableonlyforthatsolitarypoint.Asthesolutionforthesolitarysubdomainorsolitarypointisdevelopedindependently,thecompatibilitywithothersubdomainorotherpoints,do

简介：Thispaperpresentsfatiguecharacteristicanalysisofadeepwatersteelcatenaryriser(SCR)underambientexcitations.TheSCRinvolvescomplexnonlineardynamicbehaviors,especiallyatthetouchdownpoint(TDP)wheretheriserfirsttouchestheseafloor.Owingtothesignificantinteractionwithsoil,thetouchdownzoneisdifficulttobemodeled.BasedonLumped-MassmethodandP-ycurve,nonlinearspringsareusedtosimulatetheSCR-seabedcoupledinteraction.Incasestudies,anSCR'sdynamicfeatureshavebeenobtainedbytransientanalysisandthestructurefatigueassessmenthasbeencarriedoutbyS-Napproach.ThecomparativeanalysisshowsthattheTDPisthekeylocationwheresoil-riserinteractionrisessteeplyandminimumfatiguelifeoccurs.Parameterssuchasoceanenvironmentloads,vesselmotions,risermaterialandgeometricparametersarediscussed.Theresultsindicatethatthevesselmotionistheprincipalfactorforthestructurefatiguelifedistribution.

简介：本文通过对理想点法进行分析，认为该法取不同的ｐ值代表决策者对不同目标的偏爱程度；但ｐ值过大模型求解比较困难，故实际应用时ｐ值取较大的值并不现实．为进一步突出决策人对不同目标的偏爱程度，作者对理想点法进行改进，引进了各目标的权重，提出了加权理想点法．与前者比较，它进一步突出了不同目标对决策结果的影响，使决策结果更符合决策者的愿望，便于在生产中实施．通过用该法对山西省千秋沟林场某经营类型进行收获调整，表明用该法进行森林收获调整，到调整期末龄级结构基本达到完全调整林状态，且可将决策者对不同目标的要求落实到合理水平上．

简介：Superconvergencestructuresforrectangularandtriangularfiniteelementsaresummarized.TwodebatableissuesinZhu''spaper[18]arediscussed.Asuperclosepolynomialtocubictriangularfiniteelementisconstructedbyareacoordinate.

简介：我们在场统一的一个多水平分区为能被设计或在一种含蓄的形式代表的表面重建的代数学的集合表面(MPU-APSS)。代数学的点集合表面(APSS)用本地移动从一套未组织起来的点定义光滑的表面最少平方(MLS)代数学的范围适合。由于本地性质，然而，APSS不为几何学编辑并且当模特儿工作很好。相反，我们的方法基于统一途径的分区为散布的点集合造一个含蓄的近似函数。由使用octree分策略，我们适应地首先为点集合构造本地代数学的范围，然后使用weighting功能一起混合这些本地形状功能。最后，我们从表面计算签署的距离功能的控制错误的近似。另外，我们在场为点使我们的表示合适的一个有效设计操作员设定过滤并且动态点采样。我们为表面重建并且几何学当模特儿例如表面结束表明我们的统一途径的有效性。

简介：在这篇论文，单调的存在下列秒顺序的积极答案三点的边界价值问题被学习：在哪儿η∈(0，1)，δ∈[0，∞)，f∈C([0，1]×[0，∞)，[0，∞))。在某些生长下面调节非线性的条款f并且由由于Avery，安德森和Krueger使用锥扩大的一条固定的点定理和功能的类型的压缩，为单调的存在的足够的条件积极答案被获得，答案的界限被给。最后，一个例子被给说明纸的结果。

简介：WoodsfromKoreanLarch,ChineseFir,Aspens,Manchumian,andFortunesPaulowniawerechosenforinvestigation.Specimenscutfromtheair-driedwoodshadacubicshapewithnominalair-driedsizeof17.0mmand8.5mm.Oven-diedspecimenswereputincontainersfilledwithwaterandwatersorptionwasimplementedatatmosphericpressureandroomtemperature.ResultsfromtheexperimentcouldnotdescribedexactlybythemodelofsteadystateflowfromDarcy'law.Anempiricalequationisputforwardfo...

简介：在这，切开的纸，放松的Hermitian和skew-Hermitian(RHSS)preconditioner从没有元素的Galerkin(EFG)discretization方法为僵绳点问题被建议。EFG方法是为解决部分微分方程的最广泛地使用的meshfree方法之一。RHSSpreconditioner比著名HSSpreconditioner更近很被构造到系数矩阵，导致一次RHSS定点重复。RHSS重复的集中被分析并且一个最佳的参数，它最小化光谱重复矩阵的半径被描述。使用RHSSpreconditioner加速一些Krylovsubspace方法(相似GMRES)的集中也被学习。理论分析证明RHSSpreconditioned矩阵的特征值在积极间隔真实、定位。特徵向量分发和preconditioned矩阵的最小的多项式的度的上面的界限被获得。一个实际参数在实现RHSSpreconditioner被建议。最后，一些数字实验被说明显示出新preconditioner的有效性。[从作者抽象]

简介：Thestatusofagriculturalnon-pointsource(NPS)pollutioninChinaisquiteaustereowingtolotsoffactors,thecharacteristicsofwhichincludesevereN,Peutrophicationsinwaterbodies,unsuitablestructureofagricultureandthelackofreasonablemanagement.Itwaswellknownthatforestcouldplayanimportantroletocontrolsoil&watererosion,uptakeextrasoilnutrientsaswell.Howeverforestcoverageisratherlowintheheadwatersregion.TheresearchonthecausesofNSPpollutionandthesignificancebydevelopingagroforestrytodealwiththeproblemispresentedinthepaper,aswellasthefunctionofagroforestryandtherelatedmeasuresofpollutioncontrolling,e.g.,riparianforestbufferzonesbuilding.Asaconclusion,controllingthelossofsoilandwaterisregardedasanimportantcrucialactionandmajorresearchdirectioninthefield.TherebythebenefitsofpushingupagroforestryinslopstocombatwatereutrophicationandpreventNSPpollutionfromworseningaresignificant.

简介：Thepurposeofthispaperistopresentaniterativeschemeforfindingacommonelementofthesetofsolutionstothevariationalinclusionproblemwithmulti-valuedmaximalmonotonemappingandinverse-stronglymonotonemappingsandthesetoffixedpointsofnonexpansivemappingsinHilbertspace.Undersuitableconditions,somestrongconvergencetheoremsforapproximatingthiscommonelementsareproved.TheresultspresentedinthepapernotonlyimproveandextendthemainresultsinKo-rpelevich(EkonomikaiMatematicheskieMetody,1976,12(4):747-756),butalsoextendandreplenishthecorrespondingresultsobtainedbyIidukaandTakahashi(NonlinearAnalTMA,2005,61(3):341-350),TakahashiandToyoda(JOptimTheoryAppl,2003,118(2):417-428),NadezhkinaandTakahashi(JOptimTheoryAppl,2006,128(1):191-201),andZengandYao(TaiwaneseJournalofMathematics,2006,10(5):1293-1303).

简介：Thedistributedopticalfibersensingtechnologyisoverviewed,whichisbasedonRamanscatteringlighttheory.Basicoperationprinciple,structure,systemcharacteristicsandsignalprocessingarediscussed.Thisstructureandmethodofthesignalprocessingpossessofcertainspatialresolution,hencewillensurethepracticabilityofsystem.