简介：Inthispaper,weconsiderthepartialdifferentialequationofanelasticbeamwithstructuraldampingbyboundaryfeedbackcontrol.First,weprovethisclosedsystemiswell--posed;thenweestablishtbeexponentialstabilityforthiselasticsystembyusingatheoremwhichbelongstoF.L.Huang;finally,wediscussthedistributionandmultiplicityofthespectrumofthissystem.Theseresultsareveryimportantandusefulinpracticalapplications.

简介：InthispapertheexistenceandmultiplicitiesofpositivesolutionsforaclassofquasilieardifferentialsystemswithsingularnonlinearitiesviaLeray-Schaudetdegreetheoryareestablished.

简介：Earthmediumisnotcompletelyelastic,withitsviscosityresultinginattenuationanddispersionofseismicwaves.Mostviscoelasticnumericalsimulationsarebasedonthefinite-differenceandfinite-elementmethods.Targetedatviscoelasticnumericalmodelingformultilayeredmedia,theconstant-QacousticwaveequationistransformedintothecorrespondingwaveintegralrepresentationwithitsGreen'sfunctionaccountingforviscoelasticcoefficients.Anefficientalternativeforfull-waveformsolutiontotheintegralequationisproposedinthisarticlebyextendingconventionalfrequency-domainboundaryelementmethodstoviscoelasticmedia.Theviscoelasticboundaryelementmethodenjoysadistinctcharacteristicoftheexplicituseofboundarycontinuityconditionsofdisplacementandtraction,leadingtoasemi-analyticalsolutionwithsufficientaccuracyforsimulatingtheviscoelasticeffectacrossirregularinterfaces.NumericalexperimentstostudytheviscoelasticabsorptionofdifferentQvaluesdemonstratetheaccuracyandapplicabilityofthemethod.

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简介：如果在上游的边界条件仅仅基于事件波浪被规定，时间依赖者当物理或假的反映的波浪变得重要时，数字模型不能有效地模仿波浪地。这份报纸小心地描述一条途径到指定条件与集合海绵层相结合向事件边界吸收反映的波浪的事件波浪边界。把数字模型合并了到一个时间依赖者，谁的管理方程是Boussinesq类型，途径的有效性详细被学习。一般边界调节，描述下面波浪边界条件也被概括到随机的波浪的盒子。数字模特儿详细被检查。测试用例包括常规的正常一个维的事件和二维的倾斜的事件常规波浪。计算结果证明现在的途径在向事件波浪边界抑制反映的波浪上是有效的。

简介：LetR0,nbetherealCliffordalgebrageneratedbye1,e2,···,ensatisfyingeiej+ejei=-2δij,i,j=1,2,···,n.e0istheunitelement.Letbeanopenset.AfunctionfiscalledleftgeneralizedanalyticiniffsatisfiestheequationLf=0,(0.1)whereL=q0e0θx0+q1e1θx1+···+qnenθxn,qi>0,i=0,1,···,n.Inthisarticle,wefirstgivethekernelfunctionforthegeneralizedanalyticfunction.Further,theHilbertboundaryvalueproblemforgeneralizedanalyticfunctionsinRn+1+willbeinvestigated.

简介：Inthiswork,aSignoriniproblemwithCoulombfrictionintwodimensionalelasticityisconsidered.Basedonanewrepresentationofthederivativeofthedouble-layerpotential,theoriginalproblemisreducedtoasystemofvariationalinequalitiesontheboundaryofthegivendomain.Theexistenceanduniqueessofthissystemareestablishedforasmallfrictionalcoefficient.Theboundaryelementapproximationofthissystemispresentedandanerrorestimateisgiven.

简介：Thispaperisasequeltoapreviouspaper(Yang,Y.andZhang,J.H.Existenceofsolutionsforsomefourth-orderboundaryvalueproblemswithparameters.NonlinearAnal.69(2),1364–1375(2008))inwhichthenontrivialsolutionstothefourthorderboundaryvalueproblemswerestudied.Inthecurrentworkwiththesameconditionsnearinfinitybutdifferentnearzero,thepositive,negative,andsign-changingsolutionsareobtainedbythecriticalpointtheory,retractingproperty,andinvariantsets.

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简介：阶段地水晶(陆军)模型被用来模仿premelting脱臼运动对称当系统温度在时，在紧张行动下面倾斜谷物边界(STGB)远非，到融化的融化的点和结束分别地指。结果证明当premelting温度被接近到，本地premelting发生包围脱臼从在温度下面。STGB的premelting脱臼能在紧张行动下面滑行，并且premelting区域是为脱臼滑行的一个同伴。STGB腐烂的过程以二个高温度条件是很类似的。当premelting介绍，它减少为脱臼的滑行抵抗并且导致脱臼的一个更快的运动，并且也在STGB的腐烂过程期间引起系统的更多的精力减小。尽管有把紧张用于这些，premelting在STGB的整个腐烂过程取样，premelting脱臼区域显然不发展并且延长。这显示外部紧张行动不在高温度支持premelting，并且不能导致更多的premelting脱臼，它能在脱臼展览附近被欠到premelting阶段像液体的性质并且到容易滑行并且放松紧张精力的premelting脱臼；这与实验和分子的动力学的结果一致。

简介：Whencondensationoccursinsupersonicflowfields,theflowisaffectedbythelatentheatreleased.Inthepresentstudy,Navier-Stokesequationsweresolvednumericallyusinga3rd-orderMUSCLtypeTVDinite-differenceschemewithasecond-orderfractional-stepfortimeintegration,Baldwin-Lomaxmodel,thatisthealgebraicmodel,calledthezeroequationmodelwasusedinthecomputations.Theeffectsofinitialconditions(initialdegreeofsupersaturationandtotaltemperatureinthereservoir)oncondensingflowofmoistairinasupersoniccircularhalfnozzlewereinvestigated.Inthiscase,theeffectofcondensationontheboundarylayerwasalsodiscussedindetail.Asaresultthesimulatedflowfieldswerecomparedwithexperimentaldataingoodagreement,andthevelocityandtemperatureprofileswerelargelychangedbycondensation.

简介：Crossflowinstabilityplaysveryimportantroleinthetransitionoftheboundarylayeronasweptwing,typicalintheengineeringapplications.Experi-mentsrevealedthatthelinearstabilitytheorywellpredictedtheformofthecrossflowvortices,butusuallymuchoverpredictedtheirgrowthrate.Usingnonlineartheoryofhydrodynamicstability,combinedwithsomeotherconsiderations,wewereabletoobtainthegrowthrateingoodagreementwithexperimentalobservations.

简介：Thecharacteristicsofavaporbubblewithinthethermalboundarylayerweretheoreticallyanalyzed.ThePhysicalmodelsaccountingforthevariationofinterfacialtensionandfluiddensitywithtemperaturewerepropsedtoinvestigatebubbleinterfaceaspectsandthefluidflowaroundthebubble.Theanalysesdemonstratedthatthevariationininterfacialtensionresultsinveriationsintheliquid-vaporinterfaceshpaeandbubbledynamics,whichmayplayssignificantroleinthedepartureprocessofavaporbubblefromaheatedwallsurface,Increasingtemperaturegradientsintheboundarylayerandthegravitationalfieldinduceacontactlinecontractionandcorrespondinglypromotesbubbledeparture.Thesimulationofliquidflowaroundthebubbleshowsthatnaturalconvectiondominatestheflowforearthconditions;however,thethermocapillaryforcesprovidetheprincipalcatalystforbubbledepartureinamicrogravityenvironment.TheresultsindicatethatboththevaporbubblecontractionandtheMarangoniflowmayincreasetheheattransferaroundthevaporbubbleandmaycausethebubbletomoveawayfromtheheatingsurface,furtherincreasingheattransfer.

简介：在一个双性人上认为时间泛音是电磁的飞机波浪事件在R3的周期的结构。周期的结构分开二个同类的区域。在结构内的medimn是chiral并且非同类。在这篇论文，在周期的接口上与一个方法或不可分的方程在chiral媒介联合有限元素方法的变化明确的表达被学习。well-posedness连续并且discretized问题被建立。为联合的一致集中模型问题的变化近似被获得。

简介：作者用锐角原则讨论W1，p解决方案和Keldys-Fichera边界值问题的弱解决方案的内部整齐，颠倒的H?lder不平等和概括poincar茅不平等。

简介：精力流动，底部边界层(BBL)精力驱散，表面举起振幅和在Bering海的主要半天的潮汐的成分的当前的大小的空间分发详细被检验。这些分布从一个三维的数字模拟模型(POM)的结果被获得。与来自七个车站的观察数据相比，潮汐的高度的根均方差分别地为M2和N2是2.6厘米和1.2厘米，并且阶段落后的那些是21.8景吗？

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简介：ThesingularlyperturbedRobinboundaryvalueproblemsforthesemilinearellipticequationareconsidered.Undersuitableconditionsandbyusingthefixedpointtheoremtheexistence,uniquenessandasymptoticbehaviorofsolutionfortheboundaryvalueproblemsarestudied.

简介：由二块橡皮组成的矩形的围场的结构的声学的联合特征支持了灵活盘子，四个僵硬盘子被分析。就在盘子和洞之间的完整的联合而言的一般明确的表达被使用Hamiltonian功能和Rayleigh夸耀方法开发。借助于沿着灵活盘子的边界的人工的弹簧的连续分布，许多边界条件和结构关节条件被考虑。为了表明分析模型，的有效性，在洞和板速度的健全压力的回答被得出。分析结果与Kim的试验性的结果与一致很好。结果是令人满意的。最后，结构颤动上的分析结果和在洞内的健全的地是presented.These结果显示联合联合结构是相对弱的因此内部洞声音被控制旁边直接激动的板，和翻译僵硬多于旋转僵硬影响声音。