简介：

简介：

简介：相配的曲线和表面是在CAD系统，不一致的合理B花键(NURBS)在被用作事实上的标准的重要操作。在本地角落相配，在那个角落交叉首先被做的二条曲线拆散，然后第三条相配的曲线是增加在里面的顺利与G1-orG2-continuity加入二条曲线。在这篇论文我们在场基于曲线扩展解决联合问题的研究。这个延期算法的下列好性质深入地被利用：(1)原来的形状的parameterization不变化；(2)没有另外的碎片被创造。各种各样的例子被举证明我们的答案简单、有效。

简介：Anovelmethodforpreparationofpolymer-basedmagneticmicrosphereswasproposedbyutilizingmeltreactiveblending,whichwasbasedonselectivelocationofFe_3O_4nanoparticlesinPA6domainsofpolystyrene(PS)/polyamide6(PA6)immiscibleblends.ThemorphologyofPA6/Fe_3O_4compositemagneticmicrosphereswasstudiedbyscanningelectronicmicroscopy(SEM).Thecompositemagneticmicrospheresweresphericalwithadiameterrangeof0.5-8μm;thediameterwassharplydecreasedwithaverynarrowdistributionbyaddingterminalmaleicanhydridefunctionalizedpolystyrenes(FPS)forreactiveblending.Transmissionelectronmicroscopy(TEM)andthermogravimetryanalysis(TGA)resultsshowedthatmostofFe_3O_4waslocatedinthePA6microspheres.MagnetizationdatarevealedthemagnetitecontentofPA6/Fe_3O_4microsphereswasabout32wt%andthesaturationmagnetizationcouldbeupto17.2Am~2/kg.

简介：Novelmetaphorisdifferentfromtheconventionalmetaphor.Thedistinctionbetweennovelmetaphorandconventionalmetaphorisnotclear-cutbutinadegreeofmetaphoricity.Inthesituation,whennovelmetaphorsarewidelyacceptedandgenerallyusedindailylife,theirmetaphoricalmeaningareneglectedbypeople,themetaphoricalcharactersdecreaseandtheybecomeconventionalmetaphors.ThetentativemodelBlendingRelevanceTheory(BRT)isanintegratedframeworkofthetwotheories:ConceptualBlendingTheory(CBT)andRelevanceTheory(RT),seekingtheoptimalrelevancefromthetwoinputspaces.

简介：Toimprovetheaccuracyofnowcasting,anewextrapolationtechniquecalledparticlefilterblendingwasconfiguredinthisstudyandappliedtoexperimentalnowcasting.Radarechoextrapolationwasperformedbyusingtheradarmosaicatanaltitudeof2.5kmobtainedfromtheradarimagesof12S-bandradarsinGuangdongProvince,China.Thefirstbilateralfilterwasappliedinthequalitycontroloftheradardata;anopticalflowmethodbasedontheLucas–KanadealgorithmandtheHarriscornerdetectionalgorithmwereusedtotrackradarechoesandretrievetheechomotionvectors;then,themotionvectorswereblendedwiththeparticlefilterblendingalgorithmtoestimatetheoptimalmotionvectorofthetrueechomotions;finally,semi-Lagrangianextrapolationwasusedforradarechoextrapolationbasedontheobtainedmotionvectorfield.Acomparativestudyoftheextrapolatedforecastsoffourprecipitationeventsin2016inGuangdongwasconducted.Theresultsindicatethattheparticlefilterblendingalgorithmcouldrealisticallyreproducethespatialpattern,echointensity,andecholocationat30-and60-minforecastleadtimes.Theforecastsagreedwellwithobservations,andtheresultswereofoperationalsignificance.Quantitativeevaluationoftheforecastsindicatesthattheparticlefilterblendingalgorithmperformedbetterthanthecross-correlationmethodandtheopticalflowmethod.Therefore,theparticlefilterblendingmethodisprovedtobesuperiortothetraditionalforecastingmethodsanditcanbeusedtoenhancetheabilityofnowcastinginoperationalweatherforecasts.

简介：OneofthecentralquestionsinCAGE^[1]isblendingsurfaceswhichprovidesthetheoreticalbasisforthedesigntechnologyofspacesurfaces.Wewilldiscussthegeneraltheoriesandalgorithmsformultivariatehyperfiniteinterpolationandtheirapplicationtotheblendingofimplicitalgebraicsurfaces,andinvestigatetheexistenceconditionsofhyperfiniteinterpolation.BasedonWu'stheoryonblendingimplicitalgebraicsurfaces,theproblemofblendingtwoquadricsurfacesisstudied.TheconditionsforthecoefficientofgiunderwhichthereexiststhecubicblendingsurfaceS(f)(thelowestdegree)areobtainedandtheconcreteexpressionsoffarepresentedistheyexist.TheseresultscanbeapplieddirectlytoCAGD.

简介：BoththeexpansiveNewton'sinterpolatingpolynomialandtheThiele-Werner'sin-terpolationareusedtoconstructakindofbivariateblendingThiele-Werner'soscula-toryrationalinterpolation.Arecursivealgorithmanditscharacteristicpropertiesaregiven.Anerrorestimationisobtainedandanumericalexampleisillustrated.

简介：Thispaperconstructsanewkindofblockbasedbivariateblendingrationalinterpolationviasymmetricbranchedcontinuedfractions.Theconstructionprocessmaybeoutlinedasfollows.Thefirststepistodividetheoriginalsetofsupportpointsintosomesubsets(blocks).Thenconstructeachblockbyusingsymmetricbranchedcontinuedfraction.FinallyassembletheseblocksbyNewton’smethodtoshapethewholeinterpolationscheme.OurnewmethodoffersmanyflexiblebivariateblendingrationalinterpolationschemeswhichincludetheclassicalbivariateNewton’spolynomialinterpolationandsymmetricbranchedcontinuedfractioninterpolationasitsspecialcases.Theblockbasedbivariateblendingrationalinterpolationisinfactakindoftradeoffbetweenthepurelylinearinterpolationandthepurelynonlinearinterpolation.Finally,numericalexamplesaregiventoshowtheeffectivenessoftheproposedmethod.

简介：利用POM海洋数值模式建立了中国近海（2°N-41°N，99°E～132°E）分辨率为5′×5′的潮汐模型，模式采用blending同化法同化了由10年TOPEX／Poseidon测高数据反演的潮汐参数与沿岸52个验潮站观测。精度分析表明建立的潮汐模型的8分潮RSS为12．5cm。

简介：Novelhierarchicalporouscarbonmembraneswerefabricatedthroughasimplecarbonizationprocedureofwell-definedblendingpolymermembraneprecursorscontainingthesourceofcarbonpolyacrylonitrile(PAN)andanadditiveofpolyvinylpyrrolidone(PVP),whichwaspreparedusingphaseinversionmethod.Theas-fabricatedmaterialswerefurtherusedastheactiveelectrodematerialsforsupercapacitors.TheeffectsofPVPconcentrationinthecastingsolutiononstructurefeatureandelectrochemicalcapacitiveperformanceoftheas-preparedcarbonmembraneswerealsostudiedindetail.Astheelectrodematerialforsupercapacitor,ahighspecificcapacitanceof278.0F/gcouldbeattainedatacurrentof5mA/cm2andabout92.90%capacityretentioncouldbemaintainedafter2000charge/dischargecyclesin2mol/LKOHsolutionwithaPVPconcentrationof0.3wt%inthecastingsolution.Thefacilehierarchicalporestructurepreparationmethodandthegoodelectrochemicalcapacitiveperformancemakethepreparedcarbonmembraneparticularlypromisingforuseinsupercapacitor.

简介：探讨将JiTT和BlendingLearning理念应用于第一门课＂计算机基础＂的教学方法,提出融合多种教学手段,设计两套学习资源,并根据学生的实际情况及时调整教学方法。两年的教学实践显示,使用本方法后,学生考试成绩和动手能力都有明显提高,地域间的差异显著缩小。

简介：Efficientdeep-redorganiclight-emittingdiodes(OLEDs)wereinvestigatedbasedontheblendofpoly[2-methoxy-5-(2'-ethyl-hexyloxy)-l,4-phenylenevinylene](MEH-PPV)with4,7-bis(5-(7-(9H-carbazol-9-yl)-9,9-dioctyl-9H-fluoren-2-yl)thiophen-2-yl)benzo[c][1,2,5]thiadiazole(compound1).Byoptimizingtheblendratio,theturn-onvoltageofthedeviceswassignificantlyreducedfrom4.9Vto2.4V.Ahighestexternalquantumefficiencyof2.56%wasachievedatablendratioof95:5(wt)forcompound1:MEH-PPV.TheCIEcoordinatewasmeasuredtobe(0.70,0.30),withtheluminescencepeakataround680nm.Basedonexperimentalobservationstheimprovementmechanismisdescribed.

简介：        摘 要：旨在探讨医学院校专业英语课堂混合式教学（blending leaning）的形式、课堂应用以及存在的问题及前景展望。

简介：ThisarticleaddressesthesynthesisoforganicallytailoredNi-Allayereddoublehydroxide(ONi-AlLDH)anditsuseinthefabricationofexfoliatedpoly(methylmethacrylate)(PMMA)nanocomposites.ThepristineNi-AlLDHwasinitiallysynthesizedbyco-precipitationmethodandsubsequentlymodifiedusingsodiumdodecylsulfatetoobtainONi-AlLDH.NanocompositesofPMMAcontainingvariousamountsofmodifiedNi-AlLDH(3wt%?7wt%)weresynthesizedviasolventblendingmethodtoinvestigatetheinfluenceofLDHcontentonthepropertiesofPMMAmatrix.SeveralcharacterizationmethodssuchasX-raydiffraction(XRD),transmissionelectronmicroscopy(TEM),Fouriertransforminfraredspectroscopy(FTIR),rheologicalanalysis,differentialscanningcalorimetry(DSC)andthermogravimetricanalysis(TGA),wereemployedtoexaminethestructural,viscoelasticandthermalpropertiesofPMMA/OLDHnanocomposites.TheresultsofXRDandTEMexaminationconfirmtheformationofpartiallyexfoliatedPMMA/OLDHnanocomposites.TheFTIRresultselucidatethatthecharacteristicbandsforbothpurePMMAandmodifiedLDHarepresentinthespectraofPMMA/OLDHnanocomposites.Rheologicalanalyseswerecarriedouttoexaminetheadhesionbetweenpolymermatrixandfillerspresentinthenanocompositesample.TheTGAdataindicatethatthePMMAnanocompositesexhibithigherthermalstabilitywhencomparedtopurePMMA.ThethermaldecompositiontemperatureofPMMA/OLDHnanocompositesincreasesby28KcomparedtothatofpurePMMAat15%weightlossasapointofreference.IncomparisonwithpurePMMA,thePMMAnanocompositecontaining7wt%LDHdemonstratesimprovedglasstransitiontemperature(Tg)ofaround3K.Theactivationenergy(Ea),reactionorders(n)andreactionmechanismofthermaldegradationofPMMA/OLDHnanocompositeswereevaluatedusingdifferentkineticmodels.WateruptakecapacityofthePMMA/OLDHnanocompositesislessthanthatofthepurePMMA.