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简介：Polymerizationofacrylonitrile(AN)inaqueousnitricacidinitiatedbypolypropylene-basedpolyamidoxime(PPAO)-thiourea(TU)combinationhasbeeninvestigated.Theoverallrateofpolymerization(R_p)undertheconditionsof[TU]/[PPAO]<0.5molarratioisThemolecularweightsofthepolymerswerefoundtobeinverselyproportionalto3/2-powerofnitricacidconcentrationand1-powerofthioureaconcentration.Inaddition,itisindependentwiththeconcentrationsofmonomerandPPAO,anddecreaseswithincreasingtemperature.Onthebasisoftheseexperimentalresults,acoordination-protontransfermechanismfortheinitiationwasproposedanddiscussed.

简介：Anapproachbasedoncontinuumdamagemechanicstofatiguelifepredictionforstructuresisproposed.Anewfatiguedamageevolutionequationisdeveloped,inwhichtheparametersareobtainedinasimplewaywithreferencetotheexperimentalresultsoffatiguetestsonstandardspecimens.WiththeutilizationofAPDLlanguageontheANSYSplatform,afiniteelementimplementationispresentedtoperformcouplingoperationondamageevolutionofmaterialandstressredistribution.ThefatiguelivesofsomenotchedspecimensandaPitch-change-linkarepredictedbyusingtheaboveapproach.Thecalculatedresultsarevalidatedwithexperimentaldata.

简介：Inthispaper,wepresentanefficientapproachforunsupervisedsegmentationofnaturalandtexturalimagesbasedontheextractionofimagefeaturesandafastactivecontoursegmentationmodel.Weaddresstheproblemoftextureswhereneitherthegray-levelinformationnortheboundaryinformationisadequateforobjectextraction.Thisisoftenthecaseofnaturalimagescomposedofbothhomogeneousandtexturedregions.Becausetheseimagescannotbeingeneraldirectlyprocessedbythegray-levelinformation,weproposeanewtexturedescriptorwhichintrinsicallydefinesthegeometryoftexturesusingsemi-localimageinformationandtoolsfromdifferentialgeometry.Then,weusethepopularKullback-Leiblerdistancetodesignanactivecontourmodelwhichdistinguishesthebackgroundandtexturesofinterest.Theexistenceofaminimizingsolutiontotheproposedsegmentationmodelisproven.Finally,atexturesegmentationalgorithmbasedontheSplit-Bregmanmethodisintroducedtoextractmeaningfulobjectsinafastway.Promisingsyntheticandreal-worldresultsforgray-scaleandcolorimagesarepresented.

简介：张肌正规分解(是的shortedCANDECOMP/PARAFAC或CP)作为等级一个张肌的和分解张肌，它在信号处理发现众多的应用，hypergraph分析，数据分析，等等。轮流出现最少平方(ALS)是为解决它的最流行的数字算法之一。当为提高它的效率有大量努力时，一般来说，它的集中不能被保证。在这份报纸，我们合作从优化的ALS和信任区域技术回答产生轮流出现的trust-region-based最少平方(TRALS)为CP的方法。在温和假设下面，我们证明TRALS产生的整个反复的顺序收敛到CP的一个静止的点。这因此提供一个合理方法减轻沼泽地，ALS的臭名昭著的现象减慢算法的速度。而且，信任区域本身，与轮流出现的规则化相对照最少平方(RALS)方法，在选择参数提供一个自我适应的方法，它为算法的效率是必要的。我们的理论结果因此是比RALS在的强壮的[26]，它仅仅证明RALS产生的反复的顺序的簇点是一个静止的点。以便加速新算法，我们采用一个推测计划。我们从chemometrics，BCM分解和等级把我们的算法用于氨基酸荧光数据分解--(Lr，Lr，1)分解从信号处理产生，并且把它与ALS和RALS作比较。数字结果证明TRALS比ALS和RALS优异，两个从重复和中央处理器的数字预定观点。

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简介：Inthispaper,ahigh-orderfinite-volumeschemeispresentedfortheone-dimensionalscalarandinviscidEulerconservationlaws.TheSimpson’squadratureruleisusedtoachievehigh-orderaccuracyintime.TogetthepointvalueoftheSimpson’squadrature,thecharacteristictheoryisusedtoobtainthepositionsofthegridpointsateachsub-timestagealongthecharacteristiccurves,andthethird-orderandfifth-ordercentralweightedessentiallynon-oscillatory(CWENO)reconstructionisadoptedtoestimatethecellpointvalues.Severalstandardone-dimensionalexamplesareusedtoverifythehigh-orderaccuracy,convergenceandcapabilityofcapturingshock.

简介：Immobilizingbiocomponentsonsolidsurfacesisacriticalstepinthedevelopmentofnewdevicesforfuturebiological,medical,andelectronicapplications.Therefore,numerousintegratedfilmswererecentlydevelopedbyimmobilizingdifferentproteinsorenzymesonelectrodesurfaces.Inthiswork,hemeproteinsweresafelyimmobilizedontomacroporousnickel-basedelectrodeswhilemaintainingtheirfunctionality.Suchmodifiedelectrodesshowedinterestingpseudo-capacitivebehavior.Amonghemeproteins,hemoglobin(Hb)filmhasahigherelectrochemicalperformanceandgreatercharge/dischargecyclingstabilitythanmyoglobin(Mb)andcytochromeC(CytC).Thehemegroupinanalkalinemediumcouldinducetheformationofsuperoxidesontheelectrodesurface.Thesecapacitivefeaturesofhemeprotein-NielectrodewererelatedtostrongbindingsitesbetweenhemeproteinsandporousNielectrode,theaccumulationofsuperoxideorradicalsontheNisurface,andfacileelectrontransferandelectrolytediffusionthroughthethree-dimensionalmacroporousnetwork.Thus,thesenewprotein-basedsupercapacitorshavepotentialuseinfree-standingplatformtechnologyforthedevelopmentofimplantableenergy-storagedevices.

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简介：器官的多微孔的材料通过在pentaerythritol或pentaerythritoltetrathiol和cyclohexa-1,4-dione衍生物的不同类型之间的1,3-dioxol-forming聚合反应基于spiroketal和spirothioketal聚合物被综合。准备聚合物的结构被NMR光谱学和分子的集体大小证实。准备聚合物的氮吸附/解吸附作用等温线显示出在显示microporosity的低相对压力吸附的大量氮。这些聚合物从492在范围有BrunauerEmmitt和出纳(赌注)表面区域(m2g?1)到685(m2g?1)。准备聚合物被发现为有直到12.5的一个分离因素的甲醇甲苯混合的pervaporation分离有用，在6.7之间变化并且流动#

简介：ZrO2nanopowdersbasedstearicacidphasechangematerials(PCMs)werepreparedbyhigh-energymilling.Theconceptofheatcapacityfactor(HCF)wasusedtoanalyzethethermalpropertiesofthematerials.TheheatstoragepropertyofPCMs,containingthesamecontentofstearicacid(23%bymass)inthestartingmaterialsbutsynthesizedbydifferenttechnicalprocesses,wasinvestigatedbyusingHCF.Itwasfoundthattherewerevastinfluencesofdifferentdispersantsontheheatcapacity.Thesamplespreparedwithchloroformprovidedthebestheatstorageabilityinallsamplestested.

简介：Thesyntheticroutesofporouscarbonsandtheapplicationsofthefunctionalporouscarbon-basedcompositeelectrodematerialsforlithiumsecondarybatteriesarereviewed.Thesyntheticmethodshavemadegreatbreakthroughstocontroltheporesizeandvolume,wallthickness,surfacearea,andconnectivityofporouscarbons,whichresultinthedevelopmentoffunctionalporouscarbon-basedcompositeelectrodematerials.Theeffectsofporouscarbonsontheelectrochemicalpropertiesarefurtherdiscussed.Theporouscarbonsasidealmatrixestoincorporateactivematerialsmakeagreatimprovementontheelectrochemicalpropertiesbecauseofhighsurfaceareaandporevolume,excellentelectronicconductivity,andstrongadsorptioncapacity.Largenumbersofthecompositeelectrodematerialshavebeenusedforthedevicesofelectrochemicalenergyconversionandstorage,suchaslithium-ionbatteries(LIBs),Li-Sbatteries,andLi-O2batteries.Itisbelievedthatfunctionalporouscarbon-basedcompositeelectrodematerialswillcontinuouslycontributetothefieldoflithiumsecondarybatteries.

简介：人的那个听觉的系统有自动语音识别ASR系统斜面火柴，和部分Fourier变换FrFT在非静止的信号处理有唯一的优点的优秀性能，是众所周知的。在这份报纸，Gammatonefilterbank为前端被用于讲话信号时间的过滤，然后产量subband信号的声学的特征基于部分Fourier被提取变换。就为FrFT的变换顺序的批评效果而言，一个顺序改编方法基于即时频率被建议，并且它的表演基于歧义功能与方法相比。ASR实验在干净、吵闹的Putonghua位上被进行，并且结果证明建议特征基于即时频率比MFCC基线，和顺序改编方法完成显著地更高的识别率基于歧义比那有低得多的复杂性函数。进一步更，基于FrFT的特征用建议顺序改编方法完成最高的识别率。

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简介：基于模型的聚类流行地在统计文学被使用，它经常与一个Gaussian混合模型一起为数据建模。作为后果，它要求大量参数的评价，特别当数据尺寸相对大时。在这份报纸，还原剂等级模型和组稀少规则化被建议与基于模型的聚类装备，它实质地减少参数的数字并且因此便于同时的高度维的聚类和可变选择。我们为这项任务，M步用轮流出现的最小化在被解决建议一个他们算法。轮流出现的步之一包含nonsmooth功能和nonconvex限制，并且因此，我们为解决它建议multipliers(ADMM)的一个线性化的轮流出现的方向方法。这导致其subproblems都容易解决的一个有效算法。另外，一个模型选择标准为调节聚类的模型基于聚类稳定性的概念被开发。建议方法的有效性被支持在许多模仿并且真实例子，以及它的asymptotic评价和选择一致性。

简介：Consideringtheuncertaineffectsoftemporalandspatialchangesinthemarineenvironmentontheunderwateracousticenvironment,weestablishedanocean-acousticcouplednumericalmodelandperformedaparallelcalculation.Thismodelincorporatedacousticcalculationsintothedynamicocean,therebyachievingadynamicforecastingandassessmentoftheacousticenvironment.Furthermore,weadoptedtheensemblepredictionmethodtopredicttheverticalstructureoftemperatureinaclassiccross-section,thesoundspeedofthecross-sectionoftheinvestigatedseaarea,andtransmissionlosses.Wegavethepredictionerrorsofthesoundspeedprofileaswellasthe90%probabilityintervaloftransmissionlossesandtheuncertaintyhistogramsofthesoundspeeds,transmissionlosses,andsonarrangesatdifferentdepthsandfrequencies.Theresultsreflectedtheinfluenceofmarinetemporalandspacialvariationsontheuncertaintiesoftheunderwateracousticenvironment,andtheresultsalsoquantifiedtheuncertaintiesoftheunderwateracousticenvironmentparameters.Theexperimentalresultsindicatethatthemethodusedinthisstudyisabletodelineateandquantifytheuncertaintiesoftheunderwateracousticenvironmentcausedbymarinedynamicchanges.

简介：Generalizedsimplexvariantsbasedonsuccessivelinearsubprogrammingapproach(SLS)aredescribedinthispaper.Insteadofinversematrix,thesevariantsemployMoore-Penroseinverse.Theyarerespectivelycharacterizedbydifferentpivotingrules,Numericalresultsoflimitedtestsshowencouragingperformanceofthesevariants.

简介：Fieldmeasurementofstrongwindcharacteristicsisofgreatsignificanceforthedevelopmentofbridgewindengineering.LocatedineastChina,theRunyangSuspensionBridge(RSB)withamainspanof1490misthelongestbridgeinChinaandthethirdlongestintheworld.Duringthelastfouryears,theRSBhassufferedfromtyphoonsandstrongnorthernwindsonmorethantenoccasions.TodeterminethestrongwindcharacteristicsoftheRSB,windmeasurementdataobtainedfromfieldtestsduringstrongwindsanddatafromthewindenvironmentmonitoringsubsystemofthestructuralhealthmonitoringsystem(SHMS)oftheRSBwerecombinedtoanalyzethewindspeedanddirection,variationinwindspeedwithheight,turbulenceintensity,turbulenceintegrallength,windfrictionspeedandthepowerspectrum.Comparativestudiesonthecharacteristicsofthesedifferentstrongwindswerecarriedoutbasedonthecurrentwind-resistantdesignspecificationforhighwaybridges.ResultsshowedthatsomeregularityinwindcharacteristicscanbefoundinthesedifferenttyphoonspassingthroughtheRSB.Thedifferencebetweenastrongnorthernwindandatyphoonisrelativelyclear,andinsummerthetyphoonisthedominantwindloadactingontheRSB.Inaddition,thereweresomedifferencesbetweenthemeasuredstrongwindcharacteristicsandthevaluessuggestedbythespecification,especiallyinrespecttoturbulenceintensityandturbulenceintegrallength.ResultsprovidemeasurementdataforestablishingastrongwindcharacteristicdatabasefortheRSBandfordeterminingthestrongwindcharacteristicparametervaluesofthiscoastalareaineastChina.