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96 个结果
  • 简介:为在上可辨的功能(0,1)有检验了某三角法的系列(1)的工具(2)。节2包含一些基本估计。在节3,作者介绍二条主要定理,它对应于提议1,中的2个[3]。

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  • 简介:称为介绍的加权的随机整修的meansare和不仅他们的一致性和asymptotic规度的柔韧的地点评估者的一个班被证明,但是theirinfluence工作asymptotic变化和故障点也被导出。他们拥有是的thesame故障点中部,并且他们中的一些拥有更高的asymptotic亲戚效率atthe重尾巴的分布比一些另外的著名地点评估者;而trimmedmeans,Winsorized工具和Huber“sM评估者拥有更高的asymptotic亲戚效率atthe跟踪光的分布,在哪个Huber”sM评估者是最柔韧的。

  • 标签: 加权随机平衡均数 渐进正态性 分布函数 崩溃点
  • 简介:Thetheocraticsystemofgovemment,apoliticalformfeaturingthemarriageofstatepowerandreligiousauthority,hasbeencastoffbyhistoryasitisinconflictwithsuchvaluesaspolitical

  • 标签: 西藏 政治权力 人权 自治权
  • 简介:Thenaturalworldspentbillionsofyearsinsolution-findingduringevolution,whichcouldbenefitTechnology.Howdoweputthatinanutshell?Biologicalsystemsaremorecomplexthanthemostcomplexcurrenttechnology.Anygivenfunctionandeffectaresimultaneouslycoordinatedandlinkedwithothersatmanylevelsofbiologicalorganisation-fromcellorganelletoorganism,topopulationandecosystem.Technologydoesnothavetoolstodealwiththecomplexityand"goalintendedness"oflivingsystems.Butlimitsforinteractionexistonbothsides-Biologicalscienceitselfisalsotooempiricalandnotmatureenoughtoprovideasolidbaseforcorrelatinglivingwithtechnicalsystems.Movingtowardsasynthesis,whereengineerscanutilizethevastamountofavailablebiologicaldata,wesuggestusingatoolcalled"TheoryofInventiveProblemSolving"(TRIZ)andclarifyingsomeimportantmethodologicalissues,whichhavenotpreviouslybeenrecognisedinbionicengineering:1)Requirenentformoreappropriatedefinitionsof"system","effect","function","law"and"rule".2)Requirementforunderstandingorevenmeasuringthedegreeofcontradictionoranalogybetweenfunctionsinbiologicalandartificialand/ornon-livingengineeringsystem-thereisnosimpledirectcorrelationbetweenwhatengineersfindusefulandwhatbiologydoes.

  • 标签: TRIZ 生物学 科学方法 生活体系
  • 简介:Theeffectofresinstructureondesalinationofligninsolutionwasinvestigated,theoptimalstructureofresinisasfollows;crosslinkingdegreeas4%,ratioofcationogentoanionogenisnear1.withsuchresinthedesalinationofligninwasproducedverywellbecausetheresinhasbothmoleculesievingandionretardationproperties.Thesulfonationdegressofligninandtotalsaltcontentofligninsolutionweredeterminredwithionexchangetechnique,therelativeerrorlessthan1%.Thesaltcontentofsmallmoleculeintheligninsolutionwascalculatedfromsulfonationdegreeofligninandtotalsalt.Amonggelandmacroporousresinsthebestseparationofligninfromreducingsugarwasachievedwithinterpenetratingsulfonatedresin2×1.5×1.Theseparationofligninwithinterpenetratingresinwascarriedoutsimultaneouslywithfractionationoflignin,theeffectoffractionationwithmacroporoussulfonatedresinisbetterthanthatwithinterpenetratingresin,buttheformerhasadefinitesorptionofligninwhichdecreasedtherecoveryoflignin.

  • 标签: 木质素分离 木质素提纯 离子交换过程
  • 简介:Dempster-Shaferevidencetheory(DStheory)iswidelyusedinbrainmagneticresonanceimaging(MRI)segmentation,duetoitsefficientcombinationoftheevidencefromdifferentsources.Inthispaper,animprovedMRIsegmentationmethod,whichisbasedonfuzzyc-means(FCM)andDStheory,isproposed.Firstly,theaveragefusionmethodisusedtoreducetheuncertaintyandtheconflictinformationinthepictures.Then,theneighborhoodinformationandthedifferentinfluencesofspatiallocationofneighborhoodpixelsaretakenintoconsiderationtohandlethespatialinformation.Finally,thesegmentationandthesensordatafusionareachievedbyusingtheDStheory.ThesimulatedimagesandtheMRIimagesillustratethatourproposedmethodismoreeffectiveinimagesegmentation.

  • 标签: AVERAGE fusion spatial information DEMPSTER-SHAFER evidence
  • 简介:与小铁磁性或顺磁的粒子的低集中清洗气体是为常规过滤的一项困难的任务。一个新其他的过程,磁性的过滤,在这个工作被使用。氧化铁喷雾器被氧化铁粒子的elutriation从由Geldart-C氧化铁粉末和大球形的Geldart-B沙粒子的混合物组成的一张使流体化的床产生。喷雾器借助于由一,二或三个熨斗组成了的一个磁性的过滤器被过滤刺激蹒跚到对方。试验性的安装也包含了一个isokinetic采样系统和一个MicrotracSRA150粒子分析器。为过滤效率的理论表情从考虑对氧化铁粒子起作用的不同力量的一个以前的模型被推出。试验性的过滤效率匹配相当好计算了理论效率。粒子的增加缩放,这被发现,在数字刺激或在更高生产的应用磁场过滤效率直到在一些情况中的100%。在通过磁性的过滤器的所有过滤实验压力落下是很小的。

  • 标签: 氧化铁气溶胶 磁力过滤 磁化炉篦 气体净制 钢铁工业
  • 简介:在在癌症的发展和前进考虑genomic混乱的关键事件,在genomic不稳定性和carcinogenesis之间的关联当前在调查下面。在这个工作,我们建议一条引入的逻辑编程途径到为乳癌为进化模式建模的问题。用这条途径,提取能被使用以便开发并且交付最足够的治疗到病人的疾病的阶段的指纹是可能的。而且,如此的一个模型能在位于错误瀑布下面的分子的动力学的说明帮助医生和生物学家在carcinogenesis后面当模特儿。由显示出在真实世界的数据集上获得的结果,我们试着关于如此的假设的知识驱动的确认的进一步的途径给一些提示。

  • 标签: 染色体杂交 乳腺癌 癌症进化模式 基因选择
  • 简介:Fibrestressofglassfibrereinforcedpolymericcopmositesonloadisdeterminedbyusingopticalfibreasmodelfiberandbymeansoflaserinterferencemethod.Inaddition,theoriginationoffibrestressduringmouldingprocessofcompositesandtherelationbetweenfiberstressofloadedcompositesandexternalstressareexamined.Theexperimentsshowthatfibrestressisrelatedtomolecularstructureofinterfacialmaterialsandstructureofinterfaciallayers.Whenstressistransferredfrommatrixtofibre,eachinterfaciallayerhasdifferentstressgradientanddeformability.Thispropertycanbecharacterizedbyintroducinganinterfacialstresstransfercoefficientktothetwo-phasemodel.

  • 标签: interface COMPOSITES stress transfer optical FIBRE
  • 简介:Theseparating/reattachingflowoveranaxisymmetricbackward-facingstepisanalyzedexperimentallybymeansofparticleimagevelocimetry(PIV).ThemainpurposeofthemeasurementsistheinvestigationofthemeanflowfieldaswellasoftheReynoldsstressdistributionsataMachnumberof0.7andataReynoldsnumberof3.3x10~5basedonthestepheight.Duetothestrongprogressofopticalflowmeasurementsinthelastyearsitwaspossibletoresolveallflowscalesdownto180μm(≈1%ofthestepheight)withhighprecision.ThankstothehighspatialresolutionitwasfoundforthefirsttimethattheReynoldsstressdistributionfeaturesalocalminimumbetweenthefirstpartoftheshearlayerandaregioninsidetherecirculationregion.Thisimpliesamorecomplexwakedynamicsthanassumedbefore.

  • 标签: PIV 剪切层 分离 跨音速 粒子图像测速仪 高空间分辨率
  • 简介:这篇论文学习产品连续地被生产的一个生产系统;其说明限制为屏蔽检查被指定。在这篇论文,我们考虑双优秀特征;与在一个更低的说明下面掉落的每个优秀特征联系的不同费用限制一个上面的说明限制的以上。由于这些不同费用,期望的全部的利润将极大地取决于过程参数,一个特别过程平均数。这篇论文为在一个单个阶段的系统与双优秀特征的考虑决定最佳进程工具开发一个基于Markovian的模型。建议模型然后通过一个数字例子被说明;敏感分析被执行验证模型。结果证明最佳为两个优秀特征处理平均数在系统的性能上有重要效果。自从处理多质量特征是极其有限的文学调查表演,建议模型,结合了Markovian途径,提供唯一的贡献给这个领域。

  • 标签: 单一品种 最佳过程均值 马尔可夫链 品质
  • 简介:Microporoustitaniumcarbidecoatingwassuccessfullysynthesizedonmedicalgradetitaniumalloybyusingsequentialcarburization.Changesinthesurfacemorphologyoftitaniumalloyoccasionedbysequentialcarburizationwerecharacterizedandthewettabilitycharacteristicswerequantified.Furthermore,thedispersionforceswerecalculatedanddiscussed.Theresultsindicatethatsequentialcarburizationisaneffectivewaytomodifythewettabilityoftitaniumalloy.Afterthecarburizationthesurfacedispersionforceoftitaniumalloyincreasedfrom76.5×10-3J·m-2to105.5×10-3J·m-2,withanenhancementof37.9%.Meanwhilethecontactangleoftitaniumalloydecreasedfrom83°to71.5°,indicatingasignificantimprovementofwettability,whichismuchclosertotheoptimalwatercontactangleforcelladhesionof70°.

  • 标签: BIOTRIBOLOGY WETTABILITY titanium alloy SEQUENTIAL CARBURIZATION