学科分类
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11 个结果
  • 简介:WhosewoodstheseareIthinkIknow.Hishouseisinthevillagethough,HewillnotseemestoppinghereTowatchhiswoodsfillupwithsnow.MylittlehorsemustthinkitqueerTostopwithoutafarmhousenearBetweenthewoodsandfrozenlakeThedarkesteveningoftHeyear.

  • 标签: WOODS To THINK The
  • 简介:CRITICALSTOPPINGTIMESANDSEMIMARTINGALESOFSTOCHASTICPROCESSESHuBijin(胡必锦)(DepartmentofMathematicsHUSTWuhan,HubeiP.R.C.3.1992)A...

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  • 简介:SupposethatCisafinitecollectionofpatterns.ObserveaMarkovchainuntiloneofthepatternsinCoccursasarun.Thistimeisdenotedbyτ.Inthispaper,weaimtogiveaneasywaytocalculatethemeanwaitingtimeE(τ)andthestoppingprobabilitiesP(τ=τA)withA∈C,whereτAisthewaitingtimeuntilthepatternAappearsasarun.

  • 标签: pattern MARKOV CHAIN STOPPING PROBABILITY WAITING
  • 简介:Inthispaper,weprovetheexistenceanduniquenessforBackwardStochasticDifferentialEquationswithstoppingtimeastimehorizonunderthehypothesisthatthegeneratorisbounded.Wefirstproveforthestoppingtimewithfinitevaluesandforthegeneralstoppingtimeweprovetheresulttakinglimit.Wesuggestanewapproachtogeneralizetheresultsforthecaseofconstanttimehorizontothecaseofstoppingtimehorizon.

  • 标签: BSDE(Backward Stochastic Differential Equation) Random TIME
  • 简介:Inthispaperwestudytheone-dimensionalreflectedbackwardstochasticdifferentialequationswhicharedrivenbyBrownianmotionaswellasamutuallyindependentmartingaleappearinginadefaultablesetting.Usingapenalizationmethod,weprovetheexistenceanduniquenessofthesolutionstotheseequations.Asanapplication,weshowthatunderproperassumptionsthesolutionofthereflectedequationisthevalueoftherelatedmixedoptimalstopping-controlproblem.

  • 标签: 倒向随机微分方程 反射方程 混合控制 控制问题 违约 时间
  • 简介:Thestabilityofbuildingsonthesurfacewillbeinfluencedbyundergroundmining.Forthepurposesofsafeminingandbuildingsprotectingaroundminingarea,therockandsoildistortionshouldbeforecasted.Byusingtheresultsoftheelastic-finite-elementmethodsimulation,wecancalculatethetilting,horizontaldeformationandcurvatureofthesurfaceandthestrata.WushanCopperMinewastakenasanexampletoanalyzethereasonsofaccidentandbeyondstandardlimit,andtheinfluenceonthesafetyofthepackedvolumn.

  • 标签: SUBSIDENCE TILLING horizontal DEFORMATION CURVATURE finite
  • 简介:用isospin依赖的量分子的动态模型,我们系统地有或没有动量依赖者相互作用学习对称精力的角色在上全球原子停止。我们由在中央、半中央的几何学上从30~1000兆电子伏/核子在不同横梁精力从80~394改变系统的全部的团模仿反应。原子停止被发现在低事件精力向动量依赖者相互作用和对称精力敏感。动量依赖者相互作用被发现在原子停止削弱有限尺寸效果。[从作者抽象]

  • 标签: 相互作用 对称能 系统 动量 量子分子动力学模型 有限尺寸效应
  • 简介:Theslidinggateusedtostopslagduringconvertertappingissimilartothecontrolofslidegateinladle,withtheslidinggatedeviceinstalledoutsidetheBOFtappingholetip.Owingtothequickopeningandclosing(in0.5s)oftheslidinggate,itcannotonlyeffectivelystopthepre-slagandpost-slagduringconvertertappingbutalsoautomaticallyjudgeandstopslagwiththehelpofAMEPAslagdetectingandPLCcontroltechnology.Currentlyitisregardedasthebestprocesstostopslagduringconvertertapping.

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