学科分类
/ 25
500 个结果
  • 简介:我们基于clocked传播门为一个布思编码器建议一个新式样计划断热的逻辑(CTGAL)。当时,在新式样,布思编码器的结构的复杂性被减少速度更多样地被改进。断热二是补充收益增殖率,乘法器,乘数蓄电池(MAC)而且一个图案基于CTGAL。计算机模拟结果显示设计电路让正确逻辑工作并且显著地与MAC的相比的更少的能源消耗基于互补金属氧化物半导体(互补金属氧化物半导体)逻辑。

  • 标签: 传输门绝热逻辑电路 乘法器-累加器 BOOTH算法 补码
  • 简介:ThestudiesundertakentopreparetheTechnicalDesignReportoftheATLAS3^rdLevelTrigger(EventFilter)areperformedondifferentprototypesbasedondifferenttechnologies.wepresentherethemostrecentresultsobtainedforthesupervisionoftheprototypebasedonconventional,off-the-shelfPCmachinesandJavaMoblieagenttechnology.

  • 标签: ATLAS实验 事件滤器 软件开发 控制软件
  • 简介:基于伴随的优化方法是在turbomachinery的一个热点。首先,这份报纸更多样地从Lagrange论述伴随方法的原则观点。第二,把一条连续线路与薄层RANS方程相结合,我们提出伴随方程和反物理的边界条件。由于在turbomachinery的多级式的环境,混合方法的伴随interrow被介绍。解决流动方程和伴随方程的数字技术是几乎一样,并且一旦他们分别地被集成,一个目的坡度工作设计变量能高效地用复杂方法被计算。第三,集成形状不安parameterization和一个简单最陡峭的降下方法,为多级式的turbomachinery的基于伴随的空气动力学的形状优化的一个框架被构造。最后,环形的串联的一个反的图案被采用验证一台Aachen1.5阶段汽轮机的上述途径,和伴随地表明伴随的保存和areflexiainterrow混合方法。然后1+1的直接重新设计相反旋转的汽轮机试图增加效率并且把限制用于集体流动率和压力比率被拿。

  • 标签: 伴随方法 叶轮机械 外形优化 多级 拉格朗日乘数 RANS方程
  • 简介:在这篇文章,我们设计了并且综合一系列5-(2,6-dimethyl-4H-pyran-4-ylidene)-1,3-diethyl-2-thioxodihydropyrimidine-4,6(1H,5H)联合起来的-dione(PD)第一次基于聚合物(PFTDT,CZTDT,PHTDT和THTDT)。在这些聚合物,fluorene,2,7-carbazole,phenothiazine和thiophene作为撤退电子的组作为捐赠电子的组和PD被采用。TGA大小证明这些聚合物拥有好热稳定性(都超过377吗??

  • 标签: 下线 服务 迁移
  • 简介:Ameshlessapproachbasedonthemovingleastsquaremethodisdevelopedforelasto-plasticityanalysis,inwhichtheincrementalformulationisused.Inthisapproach,thedisplacementshapefunctionsareconstructedbyusingthemovingleastsquareapproximation,andthediscretegoverningequationsforelasto-plasticmaterialareconstructedwiththedirectcollocationmethod.Theboundaryconditionsarealsoimposedbycollocation.Themethodestablishedisatrulymeshlessone,asitdoesnotneedanymesh,eitherforthepurposeofinterpolationofthesolutionvariables,orforthepurposeofconstructionofthediscreteequations.Itissimplyformulatedandveryefficient,andnopost-processingprocedureisrequiredtocomputethederivativesoftheunknownvariables,sincethesolutionfromthismethodbasedonthemovingleastsquareapproximationisalreadysmoothenough.Numericalexamplesaregiventoverifytheaccuracyofthemeshlessmethodproposedforelasto-rdasticityanalysis.

  • 标签: 网格方法 弹塑性 配置法 移动最小二乘方 增量公式
  • 简介:Thestudyofnucleonresonanceisanimportanttopicinhadronphysics.Themostimportantwaytostudythenucleonresonancesisthecollisionofthephotonandnucleon.Uptonow,theknowledgeaboutthenucleonresonancesaround2GeVisstillscarce.Recently,theCLASCollaborationatJeffersonNationalAcceleratorFacilityreleasedtheirexclusivephotoproductioncrosssectionsfortheΛ(1520),Σ0(1385)andΛ(1405)forenergiesfromnearthresholduptoacenterofmassenergyWof2.85GeVwithlargerangeoftheKproductionangle[1].SincethethresholdforthephotoproductionofΛ(1520)isabout2.01GeV,thenewexperimentaldatawithhighprecisionreleasedbytheCLASCollaborationprovideanopportunitytostudythenucleonresonancesabove2GeV.

  • 标签: EXPERIMENTAL ACCELERATOR PHOTON RANGE MOST is
  • 简介:在连续语音识别的音调模型集成的一个歧视的框架被建议。放大隐藏的Markov模型的可能性基于的方法使用模型依赖者重量光谱特征和音调模型基于音调的features.The重量是有区别地由最小的电话错误标准的trahined。模型重量的更改方程基于扩大Baum-Welch算法被导出。模型重量联合的各种各样的计划被评估,一种变光滑的技术被介绍成为训练对柔韧在适合上。建议方法是音调的音节输出和字符输出语音识别任务上的ewluated。试验性的结果证明建议方法由于给定的模型的更好的插值在二项任务比全球重量获得了9.5%和4.7%相对错误减小。这为音调模型集成证明歧视的训练模型重量的有效性。

  • 标签: 托恩模型 积分 普通话 语言学习 发音
  • 简介:察觉到途径的nearfield错误,是在活跃声学的结构的实现遇到的关键问题之一,理论上被调查。基本想法包含一小部分PVDF电影对到为测量总数的主要面板和第二等的面板的表面的boned被散发健全力量。首先,在这份报纸,与活跃声学的结构联系的一个理论模型被建立。第二,为PVDF对的形状系数的公式基于察觉到的模式和PVDF建模的声学的放射被导出。最后,很多计算机模拟被执行,在散发的健全电源的PVDF对和相应减小的形状是结果表明的calculated.The察觉到的建议nearfield错误的可行性策略。

  • 标签: 误差 声音结构 声音位移 声学研究
  • 简介:Inthispaper,weconsidertheempiricallikelihood-basedinferencesforvaryingcoefficientmodelsY=X~τα(U)+εwhenXaresubjecttomissingatrandom.Basedontheinverseprobability-weightedidea,aclassofempiricallog-likelihoodratios,aswellastwomaximumempiricallikelihoodestimators,aredevelopedforα(u).Theresultingstatisticsareshowntohavestandardchi-squaredornormaldistributionsasymptotically.Simulationstudiesarealsoconstructedtoillustratethefinitesamplepropertiesoftheproposedstatistics.

  • 标签: 变系数模型 似然推理 缺失数据 经验似然估计 有限样本性质 对数似然比
  • 简介:药的效果的研究,kanamycin,在recombinantEscherichiacoli的生长新陈代谢上,B1被对待的细胞的新陈代谢的活动监视的microcalorimeter执行。种recombinantEscherichiacoli房间暂停的力量时间曲线,与不同kanamycin剂量对待,被记录。效果的程度被变化在microcalorimetric曲线的斜坡评估,药行动的动力学从这些变化在到达了他们的最大的价值并且维持了他们的最大的价值的时间被解释。试验性的剂量效果关系遵循集体行动的法律的中部效果的原则:fa/(1?fa)=(D/D50)m。y=lg的一个阴谋[(fa)1?1]?1对x=lgD给斜坡m,D50和R。试验性的结果表明kanamycin的高集中在lg阶段在recombinantEscherichiacoliB1的生长上有禁止的效果,并且在静止时期有支持的效果。而且,microcalorimetry是为在生物学的调节效果的察觉的一个可靠方法,这被表明。

  • 标签: 卡那霉素 微量热法 药效评价 重组大肠埃希氏菌 中效原理 剂量效应
  • 简介:Proteomicsisthestudyofproteinsandtheirinteractionsinacell.WiththesuccessfulcompletionoftheHumanGenomeProject,itcomesthepostgenomeerawhentheproteomicstechnologyisemerging.Thispaperstudiesproteinmoleculefromthealgebraicpointofview.Thealgebraicsystem(Σ,+,)isintroduced,whereΣisthesetof64codons.Accordingtothecharacteristicsof(Σ,+,),anovelquasi-aminoacidscodeclassificationmethodisintroducedandthecorrespondingalgebraicoperationtableoverthesetZUofthe16kindsofquasi-aminoacidsisestablished.Theinternalrelationisrevealedaboutquasi-aminoacids.Theresultsshowthatthereexistsomeveryclosecorrelationsbetweenthepropertiesofthequasi-aminoacidsandthecodon.Allthesecorrelationrelationshipsmayplayanimportantpartinestablishingthelogicrelationshipbetweencodonsandthequasi-aminoacidsduringthecourseoflifeorigination.AccordingtoMaFetal(2003J.AnhuiAgriculturalUniversity30439),thecorrespondingrelationandtheexcellentpropertiesaboutaminoacidscodeareverydifficulttoobserve.Thepresentpapershowsthat(ZU,⊕,)isafield.Furthermore,theoperationalresultsdisplaythatthecodontgahasdifferentpropertyfromotherstopcodons.Infact,inthemitochondrionfromhumanandoxgenomiccodon,tgaisjusttryptophane,isnotthestopcodonlikeinothergeneticcode,itisthecaseoftheChenWCetal(2002ActaBiophysicaSinica18(1)87).Thepresenttheoryavoidssomeinexplicableeventsofthe20kindsofaminoacidscode,inotherwordsitsolvestheproblemof'the64codonassignmentsofmRNAtoaminoacidsisprobablycompletelywrong'proposedbyYang(2006ProgressinModernBiomedicine63).

  • 标签: 分子物理学 结构 性质 测定 蛋白质
  • 简介:Weexperimentallydemonstratea4×4nonblockingsiliconthermo-optic(TO)switchfabricconsistingofthreestagesoftunablegeneralizedMach–Zehnderinterferometers.All24routingstatesfornonblockingswitchingarecharacterized.Thedevice’sfootprintis4.6mm×1.0mm.Measurementsshowthattheworstcrosstalkofallswitchingstatesis-7.2dB.Theon-chipinsertionlossisintherangeof3.7–13.1dB.TheaverageTOswitchingpowerconsumptionis104.8mW.

  • 标签:
  • 简介:Anintegralanalyticprocessfromquantificationtopropagationbasedonlimiteduncertainparametersisinvestigatedtodealwithpracticalengineeringproblems.Anewmethodbyuseofthesmallestinterval-set/hyper-rectanglecontainingallexperimentaldataisproposedtoquantifytheparameteruncertainties.Withthesmallestparameterinterval-set,theuncertaintypropagationevaluationofthemostfavorableresponseandtheleastfavorableresponseofthestructuresisstudiedbasedontheintervalanalysis.Therelationshipbetweentheproposedintervalanalysismethod(IAM)andtheclassicalIAMisdiscussed.Twonumericalexamplesarepresentedtodemonstratethefeasibilityandvalidityoftheproposedmethod.

  • 标签: 参数不确定性 结构响应 基础 设置 区间分析方法 量化分析
  • 简介:Toefficientlydecreasethesizeofparametersandimprovetherobustnessofparameterstraining,afuzzyclusteringbasedphonetictied-mixturemodel,FPTM,ispresented.TheGaussiancodebookofFPTMissynthesizedfromGaussiancomponentsbelongingtothesamerootnodeinphoneticdecisiontree.FuzzyclusteringmethodisfurtherusedforFPTMcovariancesharing.ExperimentalresultsshowthatcomparedwiththeconventionalPTMwithapproximatelythesameparameterssize,FPTMdecreasethesizeofGaussianweightsby77.59%andincreaseswordaccuracyby7.92%,whichprovesGaussianfuzzyclusteringisefficient.ComparedwithFPTM,covariance-sharedFPTMdecreasesworderrorrateby1.14%,whichprovesthecombinedfuzzyclusteringforbothGaussianandcovarianceissuperiortoGaussianfuzzyclusteringalone.

  • 标签: 失真-偏聚分析 语音矩阵 HMM 鲁棒性
  • 简介:Inthesymplecticspacecomposedoftheoriginalvariables,displacements,andtheirdualvariables,stresses,thesymplecticsolutionforthecompositelaminatesbasedonthePipes-Paganomodelisestablishedinthispaper.Incontrasttothetraditionaltechniqueusingonlyonekindofvariables,thesymplecticdualvariablesincludedisplacementcomponentsaswellasstresscomponents.Therefore,thecompatibilityconditionsofdisplacementandstressatinterfacescanbeformulatedsimultaneously.Afterbeingintroducedintothesymplecticdualsystem,theuniformschemes,suchastheseparationofvariablesandsymplecticeigenfunctionexpansionmethod,canbeimplementedconvenientlytoanalyzecompositelaminateproblems.Ananalyticalsolutionforthefreeedgeeffectofcompositelaminatesisobtained,showingtheeffectivenessofthesymplecticdualmethodinanalyzingcompositelaminates.

  • 标签: 复合材料层压板 双系统 效果分析 基础 本征函数展开法 层板
  • 简介:Thispaperinvestigatesthedamagedetectionbasedonthepropagationofguidedwaveinbimetalcompositepipes,whichcanidentifydamagelocationsinbothaxialandcircumferentialdirections.ThefeasibilityofthemethodisshowedbynumericalsimulationsusingFEMcodeANSYS.Modeanalysisisusedtoevaluatetheguidedwavemodeanditsstructure,whichcanprovidethebasisofthemodeselectioninmeasurementsscheme.Theguidedwavepropagationinadamagedpipeiscomputedbytransientanalysis.16...

  • 标签:
  • 简介:Basedonthethermodynamictheory,anorthotropicdamageconstitutivemodelwasdevelopedtodescribethenonlinearmechanicalbehaviorofC/SiCcomposites.Thediferentnonlinearkinematicandisotropichardeningfunctionswereadoptedtodescribeaccuratelythedamageevolutionprocesses.Thedamagevariablesweredefinedwiththedamagedmodulusandtheinitialundamagedmodulusonenergyequivalenceprinciple.Theinitialorthotropyanddamagecouplingwerepresentedinthedamageyieldfunction.Tensileandin-planeshearloadingandunloadingtestswereperformed,andagoodagreementbetweenthemodelandtheexperimentalresultswasachieved.

  • 标签: 连续损伤力学 复合材料 SIC 分析基 损伤本构模型 正交各向异性