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6 个结果
  • 简介:扩大电子的一个模型是适合描述经由扫描掘显微镜获得的理论模拟和试验性的结果的更多,这被发现了,但是当动态性质容易被合并时,磁性,并且特别地电子旋转性质当测量不在时由于他们的构思的isotropy提出一个问题。一个电子的旋转与一个磁场反应并且因此有向量的性质。然而,电子纺纱也是各向同性的,建议它没有向量的性质。在对电子旋转的描述的这中央冲突,我们相信,矛盾的性质的许多的根为量旋转粒子被测量并且要求。利用电子旋转在真实三维的空间一致地在被描述的一个模型--一个扩大电子模型--我们证明纺纱可以被向量描述并且仍然维持它的isotropy。在这个框架,我们重新估计连续大小的Stern-Gerlach实验,Einstein-Podolsky-Rosen实验,和效果并且在所有情况中发现相当直觉的解释。

  • 标签: 电子模型 电子自旋 扫描隧道显微镜 各向同性 动态性能 自旋粒子
  • 简介:有一个动态航行领域的一个扩大社会力量模型被建议学习双向步行运动。动态航行领域被介绍描述步行运动源于行人的决策过程的需要的方向。用扩大模型获得的宏观的基本的图对基于照相机的观察被验证。数字结果证明这个扩大模型能在步行交通复制集体现象,例如动态多线道流动和稳定的分开小巷的流动。行人路径选择行为显著地影响拥挤的概率和自我组织的小巷的数字。

  • 标签: 动态导航 力模型 社会 交通流 行人交通 运动方向
  • 简介:Thereliabilityoftheproductsoldunderawarrantyisusuallymaintainedbythemanufacturerduringthewarrantyperiod.Aftertheexpiryofthewarranty,however,theconsumerconfrontsaproblemabouthowtomaintainthereliabilityoftheproduct.Thispaperproposes,fromtheconsumer’sperspective,areplacementpolicyaftertheextendedwarranty,undertheassumptionthattheproductissoldundertherenewablefreereplacementwarranty(RFRW)policyinwhichthereplacementisdependentontherepair-costthreshold.Theproposedreplacementpolicyisthereplacementaftertheextendedwarrantyisperformedbytheconsumerbasedontherepair-costthresholdorpreventivereplacement(PR)age,whicharedecisionvariables.Theexpectedcostratemodelisderivedfromtheconsumer’sperspective.Theexistenceanduniquenessoftheoptimalsolutionthatminimizestheexpectedcostrateperunittimeareoffered.Finally,anumericalexampleispresentedtoexemplifytheproposedmodel.

  • 标签: EXTENDED WARRANTY COST THRESHOLD minimal REPAIR
  • 简介:Thesurface-relatedmultipleelimination(SRME)methodisbasedonfeedbackformulationandhasbecomeoneofthemostpreferredmultiplesuppressionmethodsused.However,somedifferencesareapparentbetweenthepredictedmultiplesandthoseinthesourceseismicrecords,whichmayresultinconventionaladaptivemultiplesubtractionmethodsbeingbarelyabletoeffectivelysuppressmultiplesinactualproduction.ThispaperintroducesacombinedadaptivemultipleattenuationmethodbasedontheoptimizedeventtracingtechniqueandextendedWienerfiltering.ThemethodfirstlyusesmultiplerecordspredictedbySRMEtogenerateamultiplevelocityspectrum,thenseparatestheoriginalrecordtoanapproximateprimaryrecordandanapproximatemultiplerecordbyapplyingtheoptimizedeventtracingmethodandshort-timewindowFKfilteringmethod.AfterapplyingtheextendedWienerfilteringmethod,residualmultiplesintheapproximateprimaryrecordcanthenbeeliminatedandthedamagedprimarycanberestoredfromtheapproximatemultiplerecord.ThismethodcombinestheadvantagesofmultipleeliminationbasedontheoptimizedeventtracingmethodandtheextendedWienerfilteringtechnique.Itisanidealmethodforsuppressingtypicalhyperbolicandothertypesofmultiples,withtheadvantageofminimizingdamageoftheprimary.Syntheticandfielddatatestsshowthatthismethodproducesbettermultipleeliminationresultsthanthetraditionalmulti-channelWienerfiltermethodandismoresuitableformultipleeliminationincomplicatedgeologicalareas.

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  • 简介:Nyquistfoldingreceiver(NYFR)isatypicalwidebandanalog-to-informationarchitecture.Focusingonthenoncooperativereceiving,thepulseradarsignalinterceptedbytheNYFRintimedomainisanalyzed.TheNYFRoutputsunderdifferentinputconditionsareinvestigatedbasedontheextendedFouriertransform(EFT)andthesamplingtheorem.CombiningwiththecharacteristicoftheNYFRoutputintimedomain,anewtimeofarrival(TOA)estimationmethodbasedontheenergyenvelopeandthewavelettransformisproposed.Theproposedestimationmethodcanbeadaptedforthenon-cooperativesituation.Ithasnorequirementforpriorinformationtodeterminethethresholdandisnotnecessarytotransformthesignalintobaseband.SimulationresultsprovethecorrectnessoftheNYFRoutputexpressionsandshowtheefficacyoftheproposedestimationmethod.

  • 标签: NYQUIST folding receiver (NYFR) time of