简介：

简介：稳定性和机械系统的围住的海角是重要研究话题之一。在这糊一个干燥磨擦振荡器的最终的围住的海角，属于非光滑的机械系统，被建议一个控制器设计方法调查。第一，为有推迟的州的反馈的名字的系统的稳定性的一个足够的条件被构造LyapunovKrasovskii功能导出。推迟的反馈获得矩阵被使用线性矩阵不平等方法计算。第二根据推迟的州的反馈，一个连续函数被Lyapunov重新设计设计保证磨擦振荡器系统的解决方案最终在全面控制下面被围住。而且，最终的界限能被选择适当参数在实践调整。因此导致磨擦的颤动或不稳定性能有效地被控制。数字结果证明建议方法是有效的。

简介：ParticlebasedmodelsofcompositeanodesareusefultoolsforexploringthebehaviorofSOFCsystems.Aspartofoureffortstodevelopmodelsforunderstandingfuelcells,wehavebeenbuildingmodelsofNi-YSZcompositeanodesusingexperimentallymeasuredparticlesizedistributions.Theobjectivesofthisstudyweretocharacterizethepercolationthresholdandconductivityofthesemodelsincomparisontosimplermonodispersedandbiphasicparticlesizedistributionsfromtheliterature.Wefoundthattheaveragevaluesfortheonsetofpercolationandthemeasuredconductivityofthemodelswithexperimentallymeasuredparticlesizedistributionsaresimilartothoseforthesimpledistributionsandtheexperimentallymeasureddistributions.Foralloftheconfigurationsevaluated,theonsetofpercolationintheNickelphaseoccurredatasolidfractionofNickelbetween20%and25%.ThiscorrespondedalmostexactlytothepointatwhichthecoordinationnumberbetweenNickelphaseparticlesreached2.2.Thesignificantfindingwasthatthevariationinthevaluefortheconductivity,asmeasuredbythestandarddeviationoftheresults,wasseveralordersofmagnitudehigherthanforthesimplersystems.Weexploredthevalidityofourassumptions,specificallytheassumptionofrandomparticleplacement,bybuildingaparticlemodeldirectlyfromFIB-SEMdata.Inthisreconstruction,itwasclearthatthelocationofparticleswasnotrandom.Particlesofthesametypeandsizehadmuchlikelihoodofcontacthigherthanwouldindicatedbyrandomlocation.

简介：Electroactiveconductingcopolymersofaniline(ANI)anddiphenylamine(DPA)arepreparedonindiumtinoxide(ITO)surfacefrom1mol/LH2SO4aqueoussolutionwithdifferentfeedratiosofANItoDPAbyusingapotentiostaticmethod.FTIRspectraandSEMmeasurementsareusedtoconfirmtheformationofcopolymers.DuetothecombinationoftheN,N′-diphenylbenzidineandanilineunitsinthemolecularchain,thecopolymerfilmsexhibitimprovedelectrochemicalandelectrochromicproperties,comparedtoPANIandPDPA.Thecopolymer[markedasP(ANI9-co-DPA1)]filmpreparedataratioof9:1(ANI/DPA)exhibitsnoveltransmittancemodulationbothinvisibleandnear-infrared(NIR)regionbetween-0.8Vand0.8V(52%and67%respectively)andfastresponsetime(3.6sforcolorationand2.3sforbleachingat600nm).Anelectrochromicdevice(ECD)basedonP(ANI9-co-DPA1)andPEDOT:PSSisalsofabricatedandshowsamulticolorelectrochromicperformance,withagoodopticalcontrast(29%invisibleregionand40%inNIRregion),acceptableresponsetime(8.3sforcolorationand7.5sforbleachingat600nm)andlong-termstability.Clearcolorchangesfromtransparent(-0.8V),brightgreen(0V),seagreen(0.4V)todarkslategray(0.8V)aredemonstrated.

简介：新奇的肼单体，pyridine-2，6二度((4-aminophenyl)thioureido)羰基(PATC)高效地被综合并且有各种各样的芳香的dianhydrides的polymerized。因而，(pyridinethiourea-imide)poly，有好热性质的s(PPTI)和火焰retardancy被制作。PATC和PPTI的结构被FTIR描绘，<啜class=“a-plus-plus”>1H-NMR，<啜class=“a-plus-plus”>13与元素的分析，crystallinity，organosolubility，固有的粘性和胶化浸透一起的C-NMR光谱学色析法的大小。包含C=S，CONH和元的PPTI在聚合物脊梁代替了pyridine一半显示出非结晶的自然并且在高度极的器官的溶剂并且甚至在象tetrahydrofuran(THF)那样的不太极的溶剂是容易地可溶的。聚合物在0.911.16dL/g的范围有固有的粘性，分子的重量在6800077000g/mol之间被发现。PPTI的电的性质以在频率的一个范围上经常的电介质被估计。他们的热稳定性被在范围发现的10%重量损失温度决定519563在组之中未改变。1/1-sGC子单元的蛋白质层次从中年的比较w相?盼?盼在RCC被减少吗？？

简介：Anewtypeofβ-diketonebasedsidechainliquidcrystallinepolysiloxanes(DKLCP)withdifferentlengthofflexiblespacersandendgroupshavebeensynthesizedbyhydrosilationreaction.Thisisliquidcrystalpolymers(LCP)usingcoordinatingβ-diketoneligandasmesogens.ThephasebehaviourofDKLCPpolymerswasstudiedbydifferentialscanningcalorimetryandpolarizingmicroscopy.X-raydiffractioninvestigationsdemonstratedthatthepolysiloxaneswithsufficientlylongflexiblespacersweresmecticliquidcrystalpolymers,whilethosewithmuchshorterspacerswerenematicones.

简介：基于数字听觉的信号的批评乐队小浪变换嵌入算法的水位标在这份报纸被建议。为每个听觉的信号片断的掩盖的阀值被计算在上psychoacoustic基本模型。根据人的听觉的系统和批评乐队小浪变换的批评乐队的类似，水位标被嵌进低乐队并且数字小浪的中等带宽系数。嵌入的力量被掩盖的阀值适应地控制。嵌入的水位标信号是听不见的实验结果表演，和watermarked声音信号对象压缩那样的许多攻击有好坚韧性，噪音，重新采样，低通行证的过滤。

简介：Wesystematicallyinvestigatedthetunabledynamiccharacteristicsofabroadbandsurfaceplasmonpolariton(SPP)waveonasilicon-gradedgratingstructureintherangeof10–40THzwiththeaidofsingle-layergraphene.ThetheoreticalandnumericalsimulatedresultsdemonstratethattheSPPsatdifferentfrequencieswithinabroadbandrangecanbetrappedatdifferentpositionsonthegraphenesurface,whichcanbeusedasabroadbandspectrometerandopticalswitch.Meanwhile,thegroupvelocityoftheSPPscanbemodulatedtobeseveralhundredtimessmallerthanlightvelocityinvacuum.Basedonthetheoreticalanalyses,wehavepredictedthetrappingpositionsandcorrespondinggroupvelocitiesoftheSPPwaveswithdifferentfrequencies.Byappropriatelytuningthegatevoltages,thetrappedSPPwavescanbereleasedtopropagatealongthesurfaceofgrapheneoroutofthegradedgratingzone.Thus,wehavealsoinvestigatedtheswitchingcharacteristicsoftheslowlightsystem,wheretheopticalswitchingcanbecontrolledasan'off'or'on'modebyactivelyadjustingthegatevoltage.Theslowlightsystemoffersadvantages,includingbroadbandoperation,ultracompactfootprint,andtunableabilitysimultaneously,whichholdsgreatpromiseforapplicationsinopticalswitches.

简介：TheDAQhardwareoftheISTRA+experimentconsistsoftheVMEsystemcratethatcontainstwoPCI-VMEbridgesinterfacingtwoPC'swithVME,externalinterruptsreceiver,thereadoutcontrollerfordedicatedfront-endelectronics,theread-outcontrollerbuffermemorymodule,theVME-CAMACinterface,andadditionalcontrolmodules,TheDAQcomputingconsistof6PC'srunningtheLinuxoperatingsystemandlinkedintoLAN.ThefirstPCservestheexternalinterruptsandacquiresthedatafromfront-endelectronics,Thesecondoneistheslowcontrolcomputer.TheremainingPC'shostthemonitoringanddataanalysissoftware.TheLinuxbasedDAQsoftwareprovidestheexternalinterruptsprocssing,thedataacquisition,recording,anddistributionbetweenmonitoringanddataanalysistasksrunningatDAQPC's.Themonitoringprogramsarebasedontwopackagesfordatavisualization:home-writtenonandtheROOTsystem.MySQlisusedasaDAQdatabase.

简介：网络熵的一个定义被介绍，并且作为一个例子，在网络熵的值之间的关系嗯象全部的节点N一样的网络模型和connect概率p被讨论。理论结果和模拟基于ER网络的熵与对方一起在同意很好的网络结果。结果显示了那与熵以前报导了的另外的网络不同，这里定义的网络熵从有不同全部的节点的随机的网络或网络的不同类型有明显的差别。因此，这网络熵可以更好描绘复杂网络的人物。在定义的网络熵的帮助下，平衡网络的概念和非平衡网络的概念可以被介绍，这也被指出，并且描述偏差到一个复杂网络的平衡状态的量的大小被执行。

简介：Wetheoreticallydesignandexperimentallyrealizeabroadbandultrasmallmicrocavityforsensingavaryingnumberofmicroparticleswhosediameteris2μminafreelysuspendedmicrofiber.Theperformanceofthemicrocavityispredictedbythetheoryofone-dimensionalphotoniccrystalsandverifiedbythenumericalsimulationoffinite-differencetimedomainandtheexperimentalcharacterizationofreflectionandtransmissionspectra.Apenetratinglengthintothereflectorsassmallasaboutfourperiodsisdemonstratedinthenumericalsimulation,givingrisetoanultrasmalleffectivemodevolumethatcanincreasethesensitivityandspatialresolutionofsensing.Moreover,areflectionbandaslargeas150nmfromthereflectorsofthemicrocavityhasbeenrealizedinsilicaopticalmicrofiberintheexperiment,whichhighlyexpandsthewavelengthrangeofsensing.Ourproposedmicrocavityintegratedintoafreelysuspendedopticalfiberoffersaconvenientandstablemethodforlong-distancesensingofmicroparticleswithouttheneedforcomplicatedcouplingsystemsandisfreefromtheinfluenceofsubstrates.

简介：Aspeakermodelcalledcompletefeaturecorpus(CFC)anaanevaluationofmutualinformation(MIE)areproposedfortext-independentspeakeridentification.TheCFCmodelrepresentsthespeechandpronunciationcharacteristicsofspeakerbyafeaturevectorcorpuswhichwastrainedfromsometypicalspeechsamples.Ithiresmulti-stepmini-maxsearchmatchingschemeforMIEalgorithmtoevaluatethesimilarityofspeechfeaturesbetweeninputspeechandthemodelsilldistanceandinformationspace.Maximummutualinformation(MMI)decisioncriterionisusedtodecidetheidentityofspeaker.ExperimentsonperformanceanalysiswithcomparisontoGMMmethodshowthatproposedmodelandevaluationalgorithmarequiteeffectiveandpresentedahigherperformancethanordinaryGMMmethod.

简介：

简介：Combiningtheinhibitedaptazymeandmolecularbeacon(MB),wedevelopedaversatilesensingstrategyforamplifieddetectionofadenosine.Inthisstrategy,theadenosineaptamerlinkstothe8-17DNAzymetoformanaptazyme.Ashortsequence,denotedasinhibitor,isdesignedtoformaduplexspanningtheaptamer–DNAzymejunction,whichblocksthecatalyticfunctionoftheDNAzyme.Onlyinthepresenceoftargetadenosine,theaptamerbindstoadenosine,thustheinhibitordissociatesfromtheaptamerportionoftheaptazymeandcannolongerformthestableduplexrequiredtoinhibitthecatalyticactivityoftheaptazyme.ThereleasedDNAzymedomainwillhybridizetotheMBandcatalyzethecleavageinthepresenceofZn2+,makingthefluorophoreseparatefromthequencherandresultinginfluorescencesignal.Theresultsshowedthatthedetectionmethodhasadynamicrangefrom10nmol/Lto1nmol/L,withadetectionlimitof10nmol/L.

简介：students＇mathematicalunderstanding,theyarenotableyettomastertothenextdegree.Thedecreasingofstudents＇MathqualitycanbeseenonthesurveydataonProgramforInternationalStudentAssessment（PISA）thatconductedeachofthreeyears.On2003,Indonesiawasinthe38^thfrom40stateswiththescore360.On2006,itwasin50thfrom57stateswiththescore391.

简介：Biologicalmaterialssuchasbone,tooth,andnacreareload-bearingnanocompositescomposedofmineralandprotein.Sincethemineralcrystalsoftenhaveslendergeometry,thenanocompositesaresusceptibletobuckleunderthecompressiveload.Inthispaper,weanalyzethelocalbucklingbehaviorsofthenanocompositestructureofthebiologicalmaterialsusingabeam-springmodelbywhichwecanconsiderplentyofmineralcrystalsandtheirinteractioninouranalysiscomparedwithexistingstudies.Weshowthatthereisatransitionofthebucklingbehaviorsfromalocalbucklingmodetoaglobalonewhenwecontinuouslyincreasetheaspectratioofmineral,leadingtoanincreaseofthebucklingstrengthwhichlevelsofftothestrengthofthecompositesreinforcedwithcontinuouscrystals.Wefindthatthecontactconditionatthemineraltipshasastrikingeffectonthelocalbucklingmodeatsmallaspectratio,buttheeffectdiminisheswhentheaspectratioislarge.Ouranalysesalsoshowthatthestaggeredarrangementofmineralplaysacentralroleinthestabilityofthebiologicalnanocomposites.

简介：Weconsiderthecomputationofthe.Cauchyprincipalvaluemtegralbyquadratureformulaeofcompoundtype,whichareobtainedbyreplacingfbyapiecewisedefinedfunctionF,[_f].Thebehaviouroftheconstantsmtheestimateswherequadratureerror)isdeterminedforfixediandwhichmeansthatnotonlythe.order,butalsothecoefficientofthemaintermofisdetermined.Thebehaviouroftheseerrorconstantsiscompared-withthecorrespondingonesobtainedforthe.methodofsubtractionofthesingularity.Asitturnsout,theseerrorconstantshave,ingeneral,thesameasymptoticbehaviour.

简介：Inaclassicallayoutprocessofafanthequantityoflossesisestimatedasasumandexpressedintheoverallefficiencyrateη.Howeverthecharacteristicofthepressurerise,thelossesandtheefficiencyratebesidethedesignpointisnotknown.Againstthisbackgroundanumericalmodelwasdevelopedtocalculatequantitativevaluesofoccurringlossesatradialfanimpellersatanearlystageinthedesignprocess.Itallowstoestimatethepressureriseandefficiencyrateofagivenfangeometryatandbesidethedesignpoint.Thephysicsoflossesaredescribedinliterature,butobtainingquantitativevaluesisstillachallenge.Ascommoninhydraulictheorythelossesarecalculatedwithanalyticformulassupportedbycoefficientsandefficiencyrates,whichhavetobedeterminedempirically.Thispapershowsthemethodhowtodeterminethecoefficientsforagivenradialfan.Thereforearepresentativeradialfanwithbackwardcurvedbladeswasdesignedinreferencetoclassicaldesignguidelines.PerformancemeasuringwasdoneconformtoISO5801.Theflowwascalculatedat8differentoperationpointsusingCFDmethods.TheRANSequationsaresolvedbyusingtheSST-k-omegaturbulencemodel.Theflowdomainconsistsofonebladesectionincludinginletchannelandoutflowchamber.Spatialdiscretizationisdonebyablock-structuredmeshofapprox.1.8millioncells.Performancedatashowaverygoodagreementbetweenmeasurementandcalculation.

简介：

简介：Letfnbeanon-parametrickerneldensityestimatorbasedonakernelfunctionK.andasequenceofindependentandidenticallydistributedrandomvariablestakingvaluesinR.Thegoalofthisarticleistoprovemoderatedeviationsandlargedeviationsforthestatisticsupx∈R|fn(x)-fn(-x)|.