学科分类
/ 12
227 个结果
  • 简介:Amongthepresentthreetypesofelectricfield-inducedluminescencewenoticedsimilaritiesbetweentheinorganicandorganicmaterialsinelectricfieldintensity.InthishighelectricfieldrangeSiO2hasthreefunctions:acceleration,excitationandmultiplicationofelectrons.Basedontheaccelerationeffect,cathodoluminescence-likeemissionoforganicmoleculesandpolymerswasfound.ByusingthethreefunctionsofSiO2orII-VIcompoundsandtheheterojunctionofinorganicandorganicmaterialwerealizeddifferentvariantsofmixedexcitationinelectroluminescence.

  • 标签: Cathodoluminescence-like emission MIXED excitation INORGANIC-ORGANIC HETEROGENEOUS
  • 简介:Basedontheadvantagesofthemixedclarifierandtowerextractor,amulti-layerclarificationextractor---anewtypeofmixedclarifier,hasbeendeve-loped,andhasalreadybeenappliedtotheseparationofREelementsandgerma-

  • 标签: TOWER URANIUM PATENT
  • 简介:MACROMANAGEMENTOFTHEMIXEDECONOMYININDIAWenFudeThemixedeconomyis,notonlyanimportantsubjectforscholars.butalsoapracticalprob-le...

  • 标签:
  • 简介:A2-Dslab-symmetricmodelofmixedconvective-stratiformcloudisdevelopedbysuperimposingconvectivecloud-sizefieldontheconvergencefield,inordertosimulateandstudythemixedcloudsconsistingofstratiformcloudandconvectivecloud.Adeepconvective,anelasticandconservativesystemofequationswithbasicvariables(V,θ,π’)issolvedbyanewmethodtocalculatedynamicfield.Thewatersubstanceinthecloudisdividedinto6categoriesandthemicrophysicalprocessesaredescribedinspectrumwithtwovariableparametersandmorereasonableparticlenumber/sizedistributions.Tocomparewithmeasuredradarechointensityandstructure,themodelmaycalculateechointensityofthemodelcloudobservedbyradar.

  • 标签: convective-stratiform MIXED cloud NUMERICAL model particle
  • 简介:etRb,c(n)denotethenumberofrepresentationsofnasthesumofonesquare,fourcubes,oneb-thpowerandonec-thpowerofnaturalnumbers.Itisshownthatifb=4,4≤c≤35,orb=5,5≤c≤13,orb=6,6≤e≤9,orb=c=7,thenRb,c(n)>>n^5/6+1/b+1/cforallsufficientlylargen.

  • 标签: 混合幂 渐进公式 Warings问题 变量
  • 简介:Inthispaper,thedualmixedmethodforanunilateralproblem,whichisthesimplifiedmodellingofscalarfunctionforthefriction-freecontactproblem,isconsidered.Thedualmixedproblemisintroduced,theexistenceanduniqenessofthesolutionoftheproblemarepresented,anderrorboundsO(h^3/4)andO(h^3/2)areobtainedforthedualmixedfiniteelementapproximationsofRaviart-Thomaselementsfork=0andk=1respectively.

  • 标签: 单向问题 有限元逼近 纯量函数 接触问题
  • 简介:Linearmixedmodels(LMMs)havebecomeanimportantstatisticalmethodforanalyzingclusterorlongitudinaldata.Inmostcases,itisassumedthatthedistributionsoftherandomeffectsandtheerrorsarenormal.Thispaperremovesthisrestrictionsandreplacethembythemomentconditions.WeshowthattheleastsquareestimatorsoffixedeffectsareconsistentandasymptoticallynormalingeneralLMMs.Aclosed-formestimatorofthecovariancematrixfortherandomeffectisconstructedanditsconsistentisshown.Basedonthis,theconsistentestimatefortheerrorvarianceisalsoobtained.Asimulationstudyandarealdataanalysisshowthattheprocedureiseffective.

  • 标签: 线性混合模型 模型估计 性质 最小二乘估计 随机效应 协方差矩阵
  • 简介:ItiswellknownthatsplinesmoothingestimatorrelatestotheBayesianestimateunderpartiallyinformativenormalprior.Inthispaper,wederivetheconditionsfortheproprietyoftheposteriorinthenonparametricmixedefectsmodelunderthisclassofpartiallyinformativenormalpriorforfxedefectwithinversegammapriorsonthevariancecomponentsandhierarchicalpriorsforcovariancematrixofrandomefect,thenweexploretheGibbssamplingprocedure.

  • 标签: 混合效应模型 非参数 贝叶斯估计 Gamma 吉布斯抽样 平滑估计
  • 简介:Inthispaper,weproposeaprotocoltodeterministicallyteleportanunknownmixedstateofqubitbyutilizingamaximallybipartiteentangledstateofqubitsasquantumchannel.Ifanon-maximallyentangledbipartitepurestateisemployedasquantumchannel,theunknownmixedquantumstateofqubitcanbeteleportedwith1-(1-C~2)~(1/2)probability,whereCistheconcurrenceofthequantumchannel.Theprotocolcanalsobegeneralizedtoteleportamixedstateofquditoramultipartitemixedstate.Moreimportantpurposeisthat,onthebasisoftheprotocol,theteleportationofanarbitrarymultipartite(pureormixed)quantumstatecanbedecomposedintotheteleportationofeachsubsystembyemployingseparateentangledstatesasquantumchannels.Inthecaseofdeterministicteleportation,Bobonlyneedstoperformunitarytransformationsonhissingleparticlesinordertorecovertheinitialteleportedmultipartitequantumstate.

  • 标签: 混合态 多粒子量子态 量子隐形传态 双粒子纠缠态 量子信道协议
  • 简介:Thispaperexaminestheimpactofforeignpenetrationonthepublicfirminamixedoligopolisticmarket.Throughtheestablishmentofamixeddoubleoligopolymarket,thispaperanalyzeshowtheshareofforeigninvestmentaffectstheenvironmentalpolicy,thepollutantemission,andthesocialwelfareundertheconditionofthestatetax.Theresultsshowthat:first,theintroductionofforeigninvestmenthassomecrowding-outeffectsonthesociallevelofoutput.Second,theentryofforeigninvestmentincreasestheprofitofthepublicfirmbyalargemargin,andthemaximumprofitoftheprivatefirmhasbeenreduced.Third,theincreaseofforeigninvestmentinpublicfirmdoesnotnecessarilyimprovetheenvironment.

  • 标签:
  • 简介:Inthespringof2013,ChinesePresidentXiJinpingissuedanimportantorderon'buildingnewthinktankswithChinesecharacteristics'.Subsequently,headsofcentralministriesandcommissionsandprovincialgovernorsallappliedtolaunchtheirownthinktanks;numerousplansandpapersonthereformandbuildingofthinktankshavebeenpublished;and

  • 标签: 中国特色 坦克 非政府组织 混合 研究机构 私营部门
  • 简介:压缩的质量对热混合沥青(高端内存区)的表演重要人行道。沥青人行道的最早熟的失败涉及差的压缩。高端内存区混合物特征的压缩被学习。压缩测试用完了典型广泛地使用的高端内存区混合物,包括有不同名字的最大的总数尺寸的稠密的阶段沥青混合物(AC13,AC20,AC25),并且有不同阶段(AC13,SMA13,Sup13和OGFC13)的混合物。高端内存区混合物在不同压缩温度和马歇尔打击数字被取样,在60和175栠杩?汥獡楴?潭畤畬?湡?楨桧琠浥数慲畴敲猠慴楢楬祴之间变化。

  • 标签: 热拌沥青混合料 压实特性 压实性能 最大公称粒径 沥青路面 压实温度
  • 简介:为了与僵硬学习负担转移机制和混合堆积的适用的能力,核心(MPSC)被插入预制增强的具体堆积(PRCP)形成,在原处测试与不同长度,直径,水水泥比率和PRCP包含MPSC,水泥混合了堆积,并且钻洞堆积,被执行。限制适用的能力,负担解决曲线和MPSC的压力分发,混合堆积被获得。在水泥土壤和PRCP之间的负担转移被有限元素方法分析(女性)。测试结果和女性的分析证明MPSC充分从从外部顶装进转移内部水泥的PRCP的混合堆积和高压缩强度玷污的水泥利用了大磨擦,并且那插入进混合堆积的PRCP改变混合堆积的压力分发并且改进在混合堆积和土壤之间的摩擦抵抗。长度和MPSC的节区域onPRCP两个都有最佳价值。采用MPSC在改进软土壤地面的适用的能力是有效的。

  • 标签: 刚性核 MPSC 混合堆 土木工程 挤压土壤效应 承载能力
  • 简介:Mostoftheearlierworkonclusteringmainlyfocusedonnumericdatawhoseinherentgeometricpropertiescanbeexploitedtonaturallydefinedistancefunctionsbetweendatapoints.However,dataminingapplicationsfrequentlyinvolvemanydatasetsthatalsoconsistsofmixednumericandcategoricalattributes.Inthispaperwepresentaclusteringalgorithmwhichisbasedonthek-meansalgorithm.Thealgorithmclustersobjectswithnumericandcategoricalattributesinawaysimilartok-means.Theobjectsimilaritymeasureisderivedfrombothnumericandcategoricalattributes.Whenappliedtonumericdata,thealgorithmisidenticaltothek-means.Themainresultofthispaperistoprovideamethodtoupdatethe'clustercenters'ofclusteringobjectsdescribedbymixednumericandcategoricalattributesintheclusteringprocesstominimisetheclusteringcostfunction.Theclusteringperformanceofthealgorithmisdemonstratedwiththetwowellknowndatasets,namelycreditapprovalandabalonedatabases.

  • 标签: 数据挖掘 数字数据 分类数据 聚类算法 数据库 数据集
  • 简介:Vesiclecanbepreparedfromaqueousmixturesofsimplecommerciallyavailable,single-tailedcanonicandanionicsurfactants.Inthiswork,theI3/I1value,Ie/Imvalue,andfluorescencelifetimeofpyreneindifferentsystems(seethepreparationofsamples)weredetermined.Hieessentialaffectingfactorsintheformationofvesiclecanbededucedfromtheobtainedresults.Itshowedthatlargevesiclemustformnaturallybeforesonicationin0.082MoctyltrimethylammoniumbromideandsodiumlauratepH=9.2aqueoussolution.Whileaftersonication,onlysmallvesicleexists,whichcanbeprovedfurtherthroughelectronmicroscope.

  • 标签: VESICLE FLUORESCENCE PROBE PYRENE
  • 简介:Anewbilevelgeneralizedmixedequilibriumproblem(BGMEP)involvinggeneralizedmixedvariational-likeinequalityproblems(GMVLIPs)isintroducedandstudiedinthereflexiveBanachspaces.First,anauxiliarygeneralizedmixedequilibriumproblem(AGMEP)isintroducedtocomputetheapproximatesolutionsoftheBGMEPinvolvingtheGMVLIPs.Byusingaminimaxinequality,theexistenceandtheuniquenessofsolutionsoftheAGMEPareprovedundermildconditionswithoutanycoerciveassumptions.Byusinganauxiliaryprincipletechnique,thenewiterativealgorithmsareproposedandanalyzed,withwhichtheapproximatesolutionsoftheBGMEParecomputed.Thestrongconvergenceoftheiterativesequencegeneratedbythealgorithmsisshownundermildconditionswithoutanycoerciveassumptions.Thesenewresultscangeneralizesomerecentresultsinthisfield.

  • 标签: bilevel GENERALIZED MIXED equilibrium problem(BGMEP) GENERALIZED
  • 简介:Inthisstudy,thesampledatawasbasedon2790samplesof9treesfromdahurianlarch(Larixgmelinii)plantationslocatedinQitaiheForestBureauinHeilongjiangProvince.ThemodifiedLogisticmodely=b1/[1+exp(b2x)]+b3wasselectedtomodelingmicrofibrilanglefromsixmodelsbasedonnonlinearregression.Then,thelogisticmodelwasfittedusingnonlinearmixed-effectmodelingapproachbasedonNLMEofS-PLUSsoftware.Evaluationstatistics,suchasAIC,BIC,LogLikelihoodandLikelihoodratiotestwereusedformodelcomparisons.TheresultsshowedthattheLogisticmodelwithparametersb1,b2,b3asmixedeffectsshowedthebestperformance.Correlationstructuresincludedcompound-symmetrystructure(CS),first-orderautoregressivecorrelationstructureAR(1),movingaveragecorrelationstructureMA(1)andautoregressive-movingaveragecorrelationstructure[ARMA(1,1)]wereincorpratedintothebestmicrofibrilanglemixedmodel.[ARMA(1,1)]significantlyimprovedtheprecisionofmixedmodel.Validationconfirmedthatthemixedmodelwithcalibrationofrandomparameterscouldprovidemoreaccurateandpreciseprediction.Therefore,theapplicationofmixedmodelnotonlyshowedthemeantrendsofmicrofibrilangle,butalsoshowedtheindividualdifferencebasedonvariance-covariancestructureandcorrelationstructure.

  • 标签: MICROFIBRIL angle(MFA) nonlinear MIXED model dahurian
  • 简介:WeconsiderthenumericalsolutionfortheHelmholtzequationinR~2withmixedboundaryconditions.Thesolvabilityofthismixedboundaryvalueproblemisestab-lishedbytheboundaryintegralequationmethod.BasedontheGreenformula,weexpressthesolutionintermsoftheboundarydata.Thekeytothenumericalreal-izationofthismethodisthecomputationofweaklysingularintegrals.Numericalperformancesshowthevalidityandfeasibilityofourmethod.Thenumericalschemesproposedinthispaperhavebeenappliedintherealizationofprobemethodforinversescatteringproblems.

  • 标签: 赫尔姆霍茨方程 格林公式 位势理论 边界积分方程 数值解 混合边界条件