简介：Therecursivestructureandquasi-recursivestructureofAdaptiveVolterraFil-ter(AVF)areputforward,theiralgorithmsaregiven,andtheircharacteristicsandapplicationsarediscussed.TheintroductionofrecursivestructurecanremarkablyreducetheparametersandcomputationalcostofAVF.

简介：Theelectroluminescencethinfilmsdopedwitherbium,fabricatedbythermalevaporationwithtwoboats,areanalyzedbyX-raydiffraction(XRD).Therelationshipbetweenelectroluminescencebrightnessandmicrostructureofthethinfilmsisobtained.Theresultsrevealthatthelargegrainsizeinhighindexplaneofdepositedmicrocrystallinefilmhasaneffectonelectroluminescencecharacteristicsofthefilmdevices.

简介：Theγ-rayradiationwillspeedupthedischargeofthestoredchargeinnonvolatileMNOSstructure.Theradiationabsorptionmechanismtoenhancethedischargeisdiscussed.Adirectradiationemissionmodelfromtheinterfacetrapsdistributingbothinenergylevelandinspaceisgiven.Thetheoreticalresultsbasedonthismodelareingoodagreementwithexperimentalmeasurement.

简介：ＵｎｉｖｅｒｓａｌＳｐｅｃｔｒａｌＭｏｄｕｌａｔｉｏｎＳｅｎｓｏｒｓ：（Ⅰ）ＴｈｅｏｒｙａｎｄＳｔｒｕｃｔｕｒｅ①ＳＨＩＹｏｎｇｊｉ（ＬｕｏｙａｎｇＴｅｃｈｎｏｌｏｇｙＣｏｌｅｇｅ，Ｌｕｏｙａｎｇ４７１００３，ＣＨＮ）Ａｂｓｔｒａｃｔ：Ａｕｎｉｖｅｒ...

简介：在大约431nm的蓝光在C+培植以后从取向附生的硅被获得，在顺序蚀刻的氢环境和化学药品退火。随化学蚀刻的增加，蓝山峰起初被一座红山峰最后提高，然后减少了并且代替。C=O混合物在C+培植期间被介绍并且在纳米Si的表面嵌入在退火期间形成了，并且最后被形成纳米硅与嵌入结构，它贡献蓝排放。介绍是光致发光的可能的机制。

简介：Thispaperanalyzesthepossibilitytodiscriminatebetweenconvectiveprecipitationandstratiformprecipitation.Thisstudyaimstoimprovethemeasurementofrainfallfromteledetectiondataobtainedbothonthegroundandinspace.Forthis,twoparameters,fractaldimensionandfractallacunarity,areconsidered.Tocalculatethefractaldimension,weusetheapproachofbox-countingandshowthatthefractaldimensiondiffersbetweenconvectivescellsandstratiformsones.Andthenthefractallacunarityparameteriscalculatedbyusingtheslidingboxesalgorithm.Thestudyforalltheregionsshowsthatprecipitationcellscanbedescribedbydifferentlacunaritieswhateverthescaleofanalysis.Wededucethatthetwoparameters,fractaldimensionandfractallacunarity,canbeusedtoclassifyprecipitationsinconvectiveregimeandstratiformregime.

简介：Anovelmethodfordesigningabeam-switchingantennawiththeplanedipoleispresented.Theantennaiscomposedofdoubledipolesplacedatthecenterofanactivesquarestructurethatisdividedinfourequalsectorsbymetallicsheets.Metallicpatchesattheoutsideofthestructureareusedtoenhancetheradiationperformanceoftheantenna.Ineachstep,thediodesinonesectorareon,whereasotherdiodesareoff.Thesectorwithoff-statediodesdefinesthedirectionoftheradiationpattern.AnantennamodelisdesignedonthesubstrateofFR4.Theproposedantennaoperatesfrom4.8GHzto5.5GHzwithgainof6.3dBiandF/B(fronttobackratio)of13.2dBiwhentheoperatingfrequencyis5.2GHz.Theantennaradiationpatterncanbesweptintheentireazimuthplaneinfourstepswitha3dBbeamwidthof90.Theresultsrevealthattheantennacouldbeusedinthebasestationofthewirelesscommunicationsystems.

简介：聚合Mach-Zehnder肋骨波导的系统的分析基于计算和优化被介绍。模拟与有效索引方法(EIM)被执行并且二维(2-D)有限差别横梁繁殖方法(FD-BPM)。在连续聚合物层之间的大折射索引步被使用EIM减少，因此，计算的精确被保证。象Y连接角度和分离差距那样的波导的重要参数被讨论，他们与光力量繁殖和损失特征的关系在这篇论文被调查。优化结构的全部的损失是0.258dB。CLC数字TN252这个工程被基础为武器设备的进展研究节目支持，中国(资助No.02040105DZ02)。

简介：AsimplephotoelasticopticalmodulatorwithaFabry-Perotcavitybasedonthesilicon-on-insulatorsystemwasfabricated.A50%modulationdepthhasbeenobtatinedatcurrentdensityofabout1.5×10^3A/cm^2.Theinsertionlosswasabout15dB.

简介：Anovelmethodfordesigningabeam-switchingantennawiththeplanedipoleispresented.Theantennaiscomposedofdoubledipolesplacedatthecenterofanactivesquarestructurethatisdividedinfourequalsectorsbymetallicsheets.Metallicpatchesattheoutsideofthestructureareusedtoenhancetheradiationperformanceoftheantenna.Ineachstep,thediodesinonesectorareon,whereasotherdiodesareoff.Thesectorwithoff-statediodesdefinesthedirectionoftheradiationpattern.AnantennamodelisdesignedonthesubstrateofFR4.Theproposedantennaoperatesfrom4.8GHzto5.5GHzwithgainof6.3dBiandF/B(fronttobackratio)of13.2dBiwhentheoperatingfrequencyis5.2GHz.Theantennaradiationpatterncanbesweptintheentireazimuthplaneinfourstepswitha3dBbeamwidthof90.Theresultsrevealthattheantennacouldbeusedinthebasestationofthewirelesscommunicationsystems.

简介：Superlatticesconsistingofalternatinglayersoforganic/polymericmaterialshavebeenfabricatedfromtris(8-hydroxyquinoline)aluminum(Alq3)andpoly(N-vinylcarbazole)(PVK)byamultisource-typehigh-vacuumorganicmoleculardeposition.ThecharacteristicsofsuperlatticestructuresaredeterminedbythesmallangleX-raydiffraction,opticaladsorptionandphotoluminescence.Theelectroluminescentdeviceswiththesuperlatticestructurehavealsobeenfabricatedandtheemissioncharacteristicsarediscussed.

简介：ＤｅｃｅｎｔｒａｌｉｚｅｄＶａｒｉａｂｌｅＳｔｒｕｃｔｕｒｅＣｏｎｔｒｏｌｏｆＣｏｍｐｌｅｘＧｉａｎｔＳｉｎｇｕｌａｒＵｎｃｅｒｔａｉｎｔｙＳｙｓｔｅｍｓ￥ＷｅｎＸｉａｎｇｃａｉ＆ＬｉｕＹｏｎｇｑｉｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＡｕｔｏｍａｔｉｏｎ，...

简介：Anovelcompactelectromagneticbandgap(EBG)structureconstructedbyetchingtworeversesplitrings(RSRs)andinsertinginterleavingedge(IE)onthepatchofconventionalmushroom-likeEBG(CML-EBG)isinvestigated.SimulateddispersiondiagramsshowthattheproposedEBGstructurepresentsa13.6%sizereductioninthecenterfrequencyofthebandgap.TwocomparisonshavebeencarriedoutfortheanalysisoftheeffectoftheRSRsandIEconfiguration.Then,asampleofthisnovelEBGisfabricatedandtested,furtherexperimentaldataagreewellwiththesimulatedresults.Thus,thisEBGstructuremakesagoodcandidatetodecreasemutualcouplingincompactmicrostrippatcharray.

简介：OrderingbasedsearchmethodshaveadvantagesovergraphbasedsearchmethodsforstructurelearningofBayesiannetworksintermsontheefficiency.Withtheaimoffurtherincreasingtheaccuracyoforderingbasedsearchmethods,wefirstproposetoincreasethesearchspace,whichcanfacilitateescapingfromthelocaloptima.Wepresentoursearchoperatorswithmajorizations,whichareeasytoimplement.Experimentsshowthattheproposedalgorithmcanobtainsignificantlymoreaccurateresults.Withregardtotheproblemofthedecreaseonefficiencyduetotheincreaseofthesearchspace,wethenproposetoaddpathpriorsasconstraintsintotheswapprocess.Weanalyzethecoefficientwhichmayinfluencetheperformanceoftheproposedalgorithm,theexperimentsshowthattheconstraintscanenhancetheefficiencygreatly,whilehaslittleeffectontheaccuracy.Thefinalexperimentsshowthat,comparedtoothercompetitivemethods,theproposedalgorithmcanfindbettersolutionswhileholdinghighefficiencyatthesametimeonbothsyntheticandrealdatasets.

简介：Cr-dopedZnOthinfilmsarepreparedonglasssubstratesbythemagnetronsputteringtechnique.AnX-raydiffraction(XRD)isusedtoanalyzethestructuralpropertiesofthethinfilms.Itindicatesthatallthethinfilmshaveapreferentialc-axisorientation.Thepeakpositionofthe(002)planeshiftstothehigher2θvalue,andthepeakintensitydecreaseswiththeincreaseofCrdoping.Theresultsofthescanningelectronmicroscopy(SEM)showthatthesurfacemorphologybecomesloosewiththeincreaseofCrdoping.Besides,itisfoundfromthephotoluminescence(PL)measurementatroomtemperaturethattheultravioletemissionpeakandgreenemissionbandarelocatedat375nmand520nm,respectively,andbothintensitiesofthemdecreasewiththeincreaseoftheCrdopingconcentration,whilethebandgapoftheultravioletemissionshiftstothelowerwavelength.TheexperimentalresultsconfirmthattheoptimalCrdopingconcentrationis2at.%.

简介：Thispaperproposesalanedetectionalgorithmbasedonmulti-structureelementmodelofmorphological.Theinnovativepointofthealgorithmliesinthefactsthattheflexiblestructurehasthemulti-structureelementsthatlanemodelfeatureshave,andthatthealgorithmadoptsthemorphologicalfilteringprincipletoextractthepixelsintheimage,whichissimilartothelanemodel.Inthealgorithm,theinterestedareaisextractedbyamodeloftrapeziumfromoriginalimage,whichisdetectedbytheoperatorofCanny,andthelanesareextractedbythestructureelements,whichhavesimilarcharacteristicstothatoflanemodel.SeverallinesaredetectedbyHoughtransformation,thenthetrafficlanesarereconstructed.Experimentsshowthatthisalgorithmissimpleandrobust,andcanefficientlydetectthelanemaskaccuratelyandquickly.

简介：Thedielectricpropertiesofceramicswithcompositionof(Sr1-xBix)TiO3+x/2(wherex=0.05～0.70)weremeasuredatfrequencyof1MHz.Theexperimentalresultsindicatethatthedielectricpropertiesof(Sr1-xBix)TiO3+x/2systemaregreatlyvariedwithanincreaseofthestoichiometricamountsofBi2O3.Therelativepermittivityofthesolidsolutionsishigh,andthedissipationfactorislow.Thepositronannihilationtechnique(PAT)wasadoptedtostudythedefectstructure.AnexplanationofthedielectricpropertiesofBi-dopedSrTiO3ceramicshasbeensuggestedintermsofelectron-compensationandvacancyordefect-compensationmechanismsandspace-chargepolarizationmechanism.

简介：Organicsemiconductoe3,4,9,10-perylenetetracarboxylicdianhydride(PTCDA)hasbeensynthetizedwith1,8-naphthalicanhydrideusingchemicalmethod.X-raydiffractionspectrumshowsthatitismonoclinic.Visibleabsorptionspectrumshowsthatitsgapbandis2.2eVwithsingletexcitonbandwidthof0.9eV.

简介：ＧｒａｔｉｎｇＡｎｇｕｌａｒ－ｍｏｖｅｍｅｎｔＴｒａｎｓｄｕｃｅｒＵｓｉｎｇａＦａｂｒｙ－ＰｅｒｏｔＳｔｒｕｃｔｕｒｅ①ＬＩＺｈｉｑｕａｎ（ＹａｎｓｈａｎＵｎｉｖｅｒｓｉｔｙ，Ｑｉｎｇｈｕａｎｇｄａｏ０６６００４，ＣＨＮ）Ａｂｓｔｒａｃｔ：Ａｎｏｖｅ...

简介：Inrecentyears,thepotentialofrenewablegreenenergysourceshasbeenextensivelystudied.Theproventechnologywhichisphotovoltaicsolarcellsstrictlydependsondaylightandproduceslow-efficiently.Toovercometherestrictions,onetechnologystudiedisthroughharvestingthethermalradiationenergywhichcanprovidea24-hourenergysource.Thecontinuityofenergysourcespromisesverygoodenergyconversionespeciallyformilitaryapplications.Thisarticlepresentsanewstructurethatcanharvesttheabundantthermalradiationenergyintousableenergyatthewavelengthof10μm.Arectangularstructurewithaperturbationslitwasdesignedtointegratewitharectifiercircuitforgreenenergyconversion.Theslittunneljunctionguidedtheelectromagneticfieldintoajunctionwheretheenergycouldbecollectedandconverted.Anenhancementfactorofapproximately110.6canbeachievedbyaperturbationslitlengthof1.0μm.Theresultsextractedfromtheproposeddesignpromiseabettercandidatetoovercomethedisadvantagesofphotovoltaicsolarcellsforenergyharvestingdevices.