学科分类
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95 个结果
  • 简介:支持向量机器(SVM)方法能被用来建立一个非线性的功能预言模型。学习理论基于小样品。核功能能被使用SVM方法基于实际样品数据自动地构造。作为结果,功能不仅得到更高合适的精确而且也更好概括。频率光谱和地震波形由Fourier变换是相关的,因此他们是一样的物理现象的二种不同形式。波形特性的变化反映差别反映的stratigraphic差别和频率光谱岩性学,液体作文,和形成厚度的变化。它直接用地震波形预言沙岩厚度。这充分不仅利用地震信息而且极大地增加预言的精确性。模型例子和实际应用显示出这个方法的适用性。

  • 标签: SVM方法 扇体砂岩 厚度预测 支持向量机
  • 简介:一个空点指能在社会相互作用的记录被发现的一个空hard-to-fill空格,并且是在内在的社会网络的人的线索不出现在记录。这贡献处理一个问题在社会相互作用预言相关的空点。同类、不同类的网络作为位于社会相互作用下面的一个模型被学习。一个启发式的预言者功能方法表现为一个新方法处理这个问题。模拟实验在一个同类的网络上被表明。在市场篮子形式的一个测试数据集合从模仿的通讯被产生。预言空点的精确被计算表明介绍方法的表演。

  • 标签: 空斑 社会网络 信息技术 模拟实验
  • 简介:Thesimulationofthisprocessandtheeffectsofprotectionirojectslaysthefoundationofitseffectivecontrolanddefence.Themathematicalmodeloftheproblemandupwindsplittingalternatingdirectionmethodwerepresented.Usingthismethod,thenumericalsimulationofseawaterintrusioninLaizhouBayAreaofShandongProvivcewasfinished.Thenumericalresultsturnedouttobeidenticalwiththerealmeasurements,sothepredictionoftheconsequencesofprotectionprojectectsisreasonable.

  • 标签: seawater INTRUSION PREDICTIVE SIMULATION numerical SIMULATION
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  • 简介:一个适应neuro模糊的推理系统(ANFIS)被介绍预言横梁的动态行为。轴的力量和大排水量的效果在分析被考虑。为横梁的动态特征的测试的一个数据库从试验性的测试被开发。为单个、多重步的横梁的非线性的颤动力量的回答从有限元素方法被计算(女性),为比较的试验性的测试和neuro模糊的模型。neuro模糊的模型为神经网络和模糊逻辑的联合提供一个一般框架。它与合并真实世界的系统的模糊性质的更多的选择是更灵活的并且是为横梁的动态特征的一个有用评价工具。因此,ANFIS能是为受到轴的负担和大排水量的多重步的横梁的动态行为分析的一个有用工具。

  • 标签: 自适应神经模糊推理系统 动态特性分析 模糊预测模型 阶梯梁 神经模糊模型 ANFIS
  • 简介:Accuratepredictionofunsteadyseparatedturbulentflowsremainsoneofthetoughesttasksandapracticalchallengeforturbulencemodeling.Inthispaper,a2DflowpastacircularcylinderatReynoldsnumber3,900isnumericallyinvestigatedbyusingthetechniqueofunsteadyRANS(URANS).Sometypicallinearandnonlineareddyviscosityturbulencemodels(LEVMandNLEVM)andaquadraticexplicitalgebraicstressmodel(EASM)areevaluated.Numericalresultshaveshownthatahigh-performancecubicNLEVM,suchasCLS,aresuperiortotheothersinsimulatingturbulentseparatedflowswithunsteadyvortexshedding.

  • 标签: 非定常湍流 分离流动 预测 应用 代数应力模型 东亚夏季风
  • 简介:Functionalcharacterizationofeverysingleproteinisamajorchallengeofthepostgenomicera.Thelarge-scaleanalysisofacell'sproteins,proteomics,seekstoprovidetheseproteinswithreliableannotationsregardingtheirinteractionpartnersandfunctionsinthecellularmachinery.Animportantsteponthiswayistodeterminethesubcellularlocalizationofeachprotein.Eukaryoticcellsaredividedintosubcellularcompartments,ororganelles.Transportacrossthemembraneintotheorganellesisahighlyregulatedandcomplexcellularprocess.Predictingthesubcellularlocalizationbycomputationalmeanshasbeenanareaofvividactivityduringrecentyears.Thepubliclyavailablepredictionmethodsdiffermainlyinfouraspects:theunderlyingbiologicalmotivation,thecomputationalmethodused,localizationcoverage,andreliability,whichareofimportancetotheuser.Thisreviewprovidesashortdescriptionofthemaineventsintheproteinsortingprocessandanoverviewofthemostcommonlyusedmethodsinthisfield.

  • 标签: 蛋白质 细胞定位 预测方法 染色体组 蛋白质组
  • 简介:Antheoreticalinvestigationwasconductedtodetectthegas-solidinterfaceeffectonlaminarflowcharacteristicsforgasflowingthroughmicropassages.Inthewall-adjacentregion,thechangeinviscosityoffluidvsthedistancefromthewallsurface,asderivedfromthedkinetictheoryofgasesresultinsignificantinfluenceontheflowcharacteristicsinmicropassages.Amodelwasproposedtoaccountforthewalleffect.Analyticalexpressionsforvelocityprofilesandpressuredropwerederived,respectively,forlaminarflowofgasesinmicrotubesandinextremelynarrowparallelplaes.TheKnudsennumber,Kn,asacriterion,thattheflowcanbetreatedreasonablyasflowinmacrochannels,isdiscussed.

  • 标签: 边界层流 微通道 气固接触面
  • 简介:Immunotherapyhasbecomeakeystrategyforcancertreatment,andtwoimmunecheckpoints,namely,programmedcelldeath1(PD-1)anditsligand(PD-L1),haverecentlyemergedasimportanttargets.TheinteractionblockadeofPD-1andPD-L1demonstratedpromisingactivityandantitumorefficacyinearlyphaseclinicaltrialsforadvancedsolidtumorssuchasnon-smallcelllungcancer(NSCLC).ManycelltypesinmultipletissuesexpressPD-L1aswellasseveraltumortypes,therebysuggestingthattheligandmayplayimportantrolesininhibitingimmuneresponsesthroughoutthebody.Therefore,PD-L1isacriticalimmunomodulatingcomponentwithinthelungmicroenvironment,butthecorrelationbetweenPD-L1expressionandprognosisiscontroversial.MoreevidenceisrequiredtosupporttheuseofPD-L1asapotentialpredictivebiomarker.ClinicaltrialshavemeasuredPD-L1intumortissuesbyimmunohistochemistry(IHC)withdifferentantibodies,buttheassessmentofPD-L1isnotyetstandardized.Somecommercialantibodieslackspecificityandtheirreproducibilityhasnotbeenfullyevaluated.FurtherstudiesarerequiredtoclarifytheoptimalIHCassayaswellastopredictandmonitortheimmuneresponsesofthePD-1/PD-L1pathway.

  • 标签: 非小细胞肺癌 免疫治疗 免疫反应 预测 监测 程序性细胞死亡
  • 简介:Inthispaperourstudiesaboutthesequentialtestingprogramforpredictingandidentificatingcarcinogens,sequentialdiscriminantmethodandcost-effectivenessanalysisaresummarized.Theanalysisofourdatabaseofcarcinogenicltyandgenotoxicityofchemicalsdemonstratestheuncertainty.ofshort-termtests(STTs)topredictcarcinogensandtheresultsofmostroutineSTTsarestatisticallydependent.WerecommendthesequentialtestingprogramcombiningSTTsandcarclnogenicityassay,theoptimalSTTbatteries,therulesofthesequentialdiscriminationandthepreferalchoicesofSTTstorspecificchemicalclass.Forillustrativepmposesthecarclnogenicitypredictionofseveralsamplechamicalsispresented.Theresultsofcost-effectivenessanalysissuggestthatthisprogramhasvastsocial-economiceffectiveness.

  • 标签: SEQUENTIAL DISCRIMINANT DISCRIMINATION chemicals summarized ROUTINE
  • 简介:Inordertoconstructobjectiverelativelymappingrelationshipmodelbetweencustomerrequirementsandproducttechnicalcharacteristics,anovelapproachbasedoncustomersatisfactionsinformationdiggingfromcaseproductsandsatisfactioninformationofexperttechnicalcharacteristicswasputforwardinthispaper.Technicalcharacteristicsevaluationvalueswereexpressedbyroughnumber,andtechnicalcharacteristicstargetsequencewasdeterminedonthebasisofefficiency,costtypeandmiddletypeinthismethod.UseeachcalculatedsatisfactionsofcustomersandtechnicalcharacteristicsasinputandoutputelementstoconstructBPnetworkmodel.AndweuseMATLABsoftwaretosimulatethisBPnetworkmodelbasedonthecaseofelectricbicycles.

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  • 简介:一个近似方法被建立了计算沿着一张化学契约的在僵绳点的在一个分子的在一个电子上的潜在的行动的深度,由Dpb表示了。是新指示物能被用于预言一张化学契约的力量。在这个工作,作为为表明这个方法的实际应用,我们用方法沿着所有CH和NH化学药品契约计算了deoxyribonucleosides和ribonucleosides的Dpb。结果在对那些结果的公平同意以前报导了试验性、理论的观察。

  • 标签: 化学键 DPB 强度 预测 估测 原位
  • 简介:Soilswerecollectedfrom2-year(2-y)and3-year(3-y)oldred-pineseedlingplotsintwotreenurseries,HaywardinthenorthandWilsoninthesouthwesternpartofWisconsinStaterespectively,andequilibratedwith0.01MCa(NO3)2)forsoilsolutionZnandMn(solu-ZnandMn),andwith0.01MCa(NO3)2+0.005MEDTAforsoilabsorbedZnandMn(ad-ZnandMn).BufferingcapacityofsoilZnandMn(b-ZnandMn)wasobtainedfromtheratioofad-ZnandMntothesolu-ZnandMn.Theconcernedtracesinpineseedlingneedles(ndls),stems(sts)androots(rts)weresimultaneouslymeasured.Theresultsobtainedshowthat:About60%ofsolu-andad-Znrangedfrom0.2to0.4andfrom1to2μg/gsoilrespectively.About70%ofb-Znwaswithin3-10.Thehighestcontentofsolu-Zncomparedwiththelowestshowedadiscrepanceofmorethan10-fold.ThetwoformsofsoilZnwerecommonlyhigherinWilsonthaninHaywarkNursery.About80%ofsolu-,ad-andb-Mnwerewithin3-10,5-5.8μg/gsoiland1-2respectively.Influenceoflowbufferingcapacityonsolu-ZnandMnwasabout20timesstrongerthanthatofthehigh.TheE-value,aratioofaccumulatedZnandMninneedlestothoseinthesoilsolution,isprovedtobe:E-Zn>E-Mn;E-sts>E-ndlsorE-rts;andE-2y>E-3y.Curvilinearand/orlinearcorrelationsbetweensoilsolu-,ad-andb-ZnandMnandndls-,sts-,rts-ZnandMnwereatverysignificantorsignificantlevels.Forpredictingndls-ZnandMn,tworealizableandsimplemodelsfromtworegressionequationswereestablishedthroughtheselectionofrelatedparametersanddependentvariables.BinaryregressionanalysisbasicallyeliminatedtheinfluenceofsoilpHonthepredictionofZnandMninneedles.SoilpHwasthusthoughttobeexcludedfromthemodel.

  • 标签: 苗圃 红松苗 土壤 预测模式
  • 简介:与科技的进步,人与几千米秘密地探索精力。作为一个thermophysical参数,起始的形成温度(IFT)在深好的设计起一个必要作用。然而,在钻前精确地预言IFT不是容易的。这个工作使用一个新方法分析地下的温度地的效果因素,并且假定人工的表面在表面温度和热电导率上消除人的错误和设备错误的骚乱。认为形成的不同分布是热电导率和岩石放射产生的热生产,一个优化模型被建立。与这个模型一起,纸预言了中国大陆人的主要的洞的底部温度科学的钻(CCSD)作为132.80

  • 标签: 形成温度 深井 工程 中国大陆科学钻探 预计 测试模型