学科分类
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20 个结果
  • 简介:有单音的补品连接功能的单个索引的模型被调查。第一,连接工作,这被显示出h(·)能被一个图形的方法看。也就是说有水平轴上的适合的反应的阴谋;垂直的轴上的观察y能被用来设想连接功能。甚至当连接功能不是单音的补品时,这条图形的途径也是适用的,这被指出。注意那许多存在非参量的光滑的ers能也被用来估计h(·)。因此,经由与惩罚功能最大化协变性功能的连接功能的我花键近似在现在的工作被调查。标准的一致性被构造。小模拟被执行证实在纸建议的途径的效率。

  • 标签: 单调 量纲 图解 图形
  • 简介:霍尔电场和网充电的产生与联系了磁性重新连接离子在血浆密度和磁场的不同起始的条件下面被学习。与大厅效果的包括,电子和离子运动的去耦沿着separatrix与强壮的电场和大网充电密度导致狭窄的层的形成。越过当前的表的血浆密度或磁场或两个的不对称现象将大部分增加电场和网充电的大小。结果显示磁场的不对称现象在生产更大的电场和费用密度是更有效的。电场和网费用比在高密度或/并且低磁场方面的那些在低密度或/并且高磁场方面总是是大得多的。电场和网费用密度线性地依赖于血浆密度的比率或越过当前的表的磁场的平方。为有磁场和密度的两起始的不对称现象的盒子,大霍尔电场和费用密度被产生。

  • 标签: 电子领域 分界线 不对称性 电子学
  • 简介:WeproposeanapplicationoftheelasticneuralnetforringrecognitioninRICHdetectors.Themethodhasbeendevelopedtofindringsdistortedduetomisalignmentofdetectorsandcontaminatedbynoise.ThealgorithmwastestedonsimulateddataofCOMPASSRICH-1detector.Reconstructionefficiencyis99.95%fortripleLEPTOeventstaking5msperevent.

  • 标签: 神经网络 环形识别方法 RICH
  • 简介:在这篇论文,我们为在NoC(薄片上的网络)降低通讯的潜伏建议一种技术。这种技术,能支持服务(QoS)的二质量,,保证产量(GT)和尽力销售(),基于把一个更宽的连接切成更狭窄的连接在NoC增加产量和减少潜伏。另外,减轻同步并且减少串音,我们使用为更小的公共汽车编码的1-of-4。更加编码为建议NoC建筑学的使用降低潜伏为并且GT包。另外,当连接的动力消耗量被减少时,带宽被增加。

  • 标签: 网络芯片 路由器 时滞 通过量 等待时间
  • 简介:[1]Ci,S.,Sharif,H.,2002.AVariableDataRateSchemetoEnhanceThroughputPerformanceofWirelessLANs.IEEECSNDSP.[2]Doufexi,A.,Armour,S.,Butler,M.,Nix,A.,Bull,D.,2001.AstudyoftheperformanceofHiperlan/2andIEEE802.11aphysicallayers.IEEEVTC,1:668-672.[doi:10.1109/VETECS.2001.944927][3]Doufexi,A.,Armour,S.,Karlsson,P.,Butler,M.,Nix,A.,Bull,D.,2002.AcomparisonoftheHiperlan/2andIEEE802.11aWirelessLANstandards.IEEECommunicationsMagazine,40(5):172-180.[doi:10.1109/35.1000232][4]Ferré,P.,Doufexi,A.,Chung-How,J.,Nix,A.,Bull,D.,2003.LinkAdaptationforVideoTransmissionoverCOFDMBasedWLANs.IEEESCVT.Eindhoven.[5]Girod,B.,Kalman,M.,Liang,Y.,Zhang,R.,2002.Advancesinchannel-adaptivevideostreaming.JournalofWirelessCommunicationsandMobileComputing,2(6):573-584.[doi:10.1002/wcm.87][6]Haratcherev,I.,Langendoen,K.,2004.HybridRateControlforIEEE802.11.ACMInternationalWorkshoponMobilityManagementandWirelessAccess(MobiWac),Philadelphia.[7]Haratcherev,I.,Langendoen,K.,Lagendijk,I.,Sips,H.,2002.D3.16:Application-directedAutomatic802.11RateControl.GigaMobileProject,TUDelf,Tech.Rep.[8]Haratcherev,I.,Langendoen,K.,Lagendijk,R.,Sips,H.,2004.SNR-basedRateControlinWaveLAN.ASCI2004Conference.PortZelande.[9]Haratcherev,I.,Taal,J.,Langendoen,K.,Lagendijk,R.,Sips,H.,2005.AutomaticIEEE802.11ratecontrolforstreamingapplications.WirelessCommunicationsandMobileComputing,5(4):421-437.[doi:10.1002/wcm.301][10]Hoffman,C.,Manshaie,M.H.,Turletti,T.,2005.CLARA:Closed-LoopAdaptiveRateAllocationforIEEE802.11WirelessLANs.IEEEWirelessCom'.Hawaii.[11]Holland,G.,Vaidya,N.,Bahl,P.,2001.ARate-AdaptiveMACProtocolforMulti-HopWirelessNetworks.Mobicom.Rome.[12]H264software,2005.H.264/AVCSoftwareCoordination.http://bs.hhi.de/~suehring/tml/.[13]IEEE802.11,1999.Part11:WirelessLANMediumAccessControl(MAC)andPhysicalLayer(PHY)Specifications.[14]IEEE802.11a,1999.Part11:WirelessLANMediumAccessControl(MAC)andPhysicalLayer(PHY)Specific

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  • 简介:Thedynamicsformulti-linkspatialflexiblemanipulatorarmsisinvestigated.ThesystemconsideredhereisanN-flexible-linkmanipulatordrivenbyNDC-motorsthroughNrevoluteflexiblejoints.Theflexibilityofeachflexiblejointismodeledasalinearlyelastictorsionalspring,andthemassofthejointisalsoconsidered.Fortheflexibilityofthelink,allofthestretchingdeformation,bendingdeformationandthetorsionaldeformationareincluded.ThecompletegoverningequationsofmotionofthesystemarederivedviatheLagrangeequations.Thenonlineardescriptionofthedeformationfieldoftheflexiblelinkisadoptedinthedynamicmodeling,andthusthedynamicstiffeningeffectsarecaptured.Basedonthismodel,ageneral-purposesoftwarepackagefordynamicsimulationofmulti-linkspatialflexiblemanipulatorarmsisdeveloped.Severalillustrativeexamplesaregiventovalidatethealgorithmpresentedinthispaperandtoindicatethatnotonlydynamicstiffeningeffectsbutalsotheflexibilityofthestructurehassignificantinfluenceonthedynamicperformanceofthemanipulator.

  • 标签: 柔性机械臂 动力刚化效应 多连杆 空间 动态仿真软件包 拉格朗日方程
  • 简介:利用ASP.NET语言编制了一个物理实验数据处理系统。该系统界面友好,通过最小二乘法能够自动处理输入的实验数据,拟合出曲线,分析误差,输出曲线图形,适合在实验教学中使用。

  • 标签: ASP.NET 最小二乘法 数据处理
  • 简介:‘Stent对stent’研究是被设计与以前同意的相比显示出新stent图案的优势的一种使随机化的试用。这些研究被规章的机构通常使用,例如美国食物药品管理局(食物及药品管理局),到表示同意到新stent图案。有这些临床的试用的问题是他们的高费用和困难。在这份报纸,为‘stent对stent’的一种数字选择复杂临床的研究被介绍。一个有限元素模型被开发在冠的stent放置以后在结果上调查stent设计的影响。二商业地可得到的stents(NIR和多连接stents)被建模,他们的行为以压力分发在推广期间被比较,光线的获得,外部直径变化并且节略。而且,狭窄率上的stent设计的效果被在动脉以内比较压力分发调查。在stented动脉的动脉的墙压力的分析显示多连接stent设计原因与slotted试管NIR设计相比与局部性的stenotic损害降低应力到一个动脉粥样硬化患者容器。有观察临床的狭窄的调查结果相互关联与多连接stent设计相比在NIR评估狭窄率,它更高报导了。

  • 标签: 支架设计 动脉狭窄 有限元法 NIR 应用 多杆
  • 简介:电报网支持了在点点的最先进的技术支持了的玻璃窗帘人玻璃窗帘墙,广泛地在中国被使用。因为它在风负担下面的大偏转和高非线性,电缆线网络的动态性能是极大地与常规线性结构的不同。连续的膜理论被用来构造非线性的颤动电报网的微分方程,和泛音平衡方法被用来解决非线性的频率的分析公式。为了验证上述分析公式,公式的结果和非线性的女性的时间历史方法的精确性,被比较并且发现了在好同意。而且,微分方程和非线性的频率在这篇论文获得了的非线性的颤动是在波动的风负担下面的一张电报网的wind-inducedresponse分析的基础。

  • 标签: 玻璃幕墙 索式结构 几何非线性 非线性振动 频率
  • 简介:Apolymericgelisanaggregateofpolymersandsolventmolecules,whichcanretainitsshapeafteralargedeformation.ThedeformationbehaviorofpolymericgelswasoftendescribedbasedontheFlory-Rehnerfreeenergyfunctionwithoutconsideringtheinfluenceofchainentanglementsonthemechanicalbehaviorofgels.Inthispaper,anewhybridfreeenergyfunctionforgelsisformulatedbycombiningtheEdwards-Vilgisslip-linkmodelandtheFlory-Hugginsmixingmodeltoquantifythetime-dependentconcurrentprocessoflargedeformationandmasstransport.Thefiniteelementmethodisdevelopedtoanalyzeexamplesofswelling-induceddeformation.Simulationresultsarecomparedwithavailableexperimentaldataandshowgoodagreement.Theinfluenceofentanglementsonthetime-dependentdeformationbehaviorofgelsisalsodemonstrated.Thestudyoflargedeformationkineticsofpolymericgelisusefulfordiverseapplications.

  • 标签: POLYMERIC GEL finite element method slip-link
  • 简介:Accordingtothebasicideaofclassicalyin-yangcomplementarityandmodemdual-complementarity,inasimpleandunifiednewwayproposedbyLuo,theunconven-tionalHamilton-typevariationalprinciplesforgeometricallynonlinearelastodynamicsoforthogonalcable-netstructuresareestablishedsystematically,whichcanfullycharac-terizetheinitial-boundary-valueproblemofthiskindofdynamics.Animportantin-tegralrelationismade,whichcanbeconsideredasthegeneralizedprincipleofvirtualworkforgeometricallynonlineardynamicsoforthogonalcable-netstructuresinmechan-ics.Basedonsuchrelationship,itispossiblenotonlytoobtaintheprincipleofvirtualworkforgeometricallynonlineardynamicsoforthogonalcable-netstructures,butalsotoderivesystematicallythecomplementaryfunctionaisforfive-field,four-field,three-fieldandtwo-fieldunconventionalHamilton-typevariationalprinciples,andthefunctionalfortheunconventionalHamilton-typevariationalprincipleinphasespaceandthepoten-tialenergyfunctionalforone-fieldunconventionalHamilton-typevariationalprincipleforgeometricallynonlinearelastodynamicsoforthogonalcable-netstructuresbythegeneral-izedLegendretransformationgiveninthispaper.Furthermore,theintrinsicrelationshipamongvariousprinciplescanbeexplainedclearlywiththisapproach.

  • 标签: 流体弹性动力学 非线性结构 正交圆 力学
  • 简介:Thisstudyperformsthequantitativeanalysisandcomparisontoacousticsignalcharact,eristicsofLargcyellowcroaker(Pseudosciaenacrocea)attwodifferentages.Thesoundswercrecordedfromthefishesinanet-cage.Twoexponentialoscillationfunctionsarebuilttofittheacousticsignalofthefishes.Thesignalcharacteristicoftheoscillationfrequencyandattcnuationcoefficientwasdescribedquantitatively.Simulationcurvesofthefunctioncouldfitwellacousticsignals.Boththeaverageoscillationfrequencyandattenuationcoefficientofthefittedsignalsfromthe13-15-month-oldfishesarclowerthanthosefromthe7-8-month-oldfishes.Theresultssuggestthattheoscillationfrequencyandattenuationcoefficientoftheacollsi.icsignalfunctionmayberelevanttothephysicalproccssofsoundproductionandagecharacteristicsofLargeyellowcroaker.Thisstudymaybevaluablefortheacousticapplicationtotheartificialcultureofthespecies.

  • 标签: 信号特征 声学信号 大黄鱼 网箱养殖 振荡频率 衰减系数
  • 简介:WithvonMisesyieldcriterion,theloadingrangeofNetSectionCollapse(NSC)Criteriaisextendedfromcombinedtensionandbendingloadingstocombinedbending,torsionandinternalpressureloadings.AnewtheoreticalanalyzingmethodofplasticlimitloadforpressurepipewithincompleteweldingdefectsbasedontheextendedNSCCriteriaispresentedandthecorrelativeformulasarededuced,theinfluencesofpipecurvature,circumferentiallengthanddepthofincompleteweldingdefectsontheplasticlimitloadofpressurepipeareconsideredaswellinthismethod.Meanwhile,accordingtotheorthogonalexperimentaldesignmethod,theplasticlimitloadsarecalculatedbythefiniteelementmethodandcomparedwiththetheoreticalvalues.Theresultsshowthattheexpressionsofplasticlimitloadofpressurepipewithincompleteweldingdefectsunderbending,torsionandinternalpressurebasedonextendedNSCcriteriaarereliable.Thestudyprovidesanimportanttheoreticalbasisfortheestablishmentofsafetyassessmentmeasuretowardspressurepipewithincompleteweldingdefects.

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  • 简介:Theeffectsofcarbon-ionirradiationoncancercelltelomerefunctionhavenotbeencomprehensivelystudied[1].Ourpreviousreportshowedthatcancercellswithtelomeredysfunctionweremoresensitivetocarbon-ionirradiation,butthemechanismthatlinktelomeredysfunctionandcancercellinactivationhasnotbeeninvestigated.

  • 标签: Telomere-mitochondrion LINK Contributed
  • 简介:Amode-lockedthulium-dopedfiberlaser(TDFL)basedonnonlinearpolarizationrotation(NPR)withdifferentnetanomalousdispersionisdemonstrated.Whenthecavitydispersionis-1.425ps~2,thenoise-like(NL)pulsewithcoherencespikewidthof406fsandpulseenergyof12.342nJisgeneratedatacenterwavelengthof2003.2nmwith3dBspectralbandwidthof23.20nm.Intheexperimentalperiodof400min,the3dBspectralbandwidthvariation,theoutputpowerfluctuation,andthecentralwavelengthshiftarelessthan0.06nm,0.04dB,and0.4nm,respectively,indicatingthattheNPR-basedTDFLoperatingintheNLregimeholdsgoodlong-termstability.

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