简介：图象质量评价(IQA)是在图象处理的一个基本问题。人的视觉是层次的，这是一个普通原则：我们首先察觉象轮廓那样的全球结构的信息然后如果必要集中于本地地区性的细节。跟随这个原则，我们由确定为IQA建议一个新奇框架结构的信息和区域的退化独立满足，并且印射两个获得客观分数。结构的信息能被轮廓察觉技术作为轮廓获得。实验被进行在二大规模数据集上与多重最先进的方法比较表明它的表演。

简介：CongestioncontrolforpacketssentonanetworkisimportantforDAQsystemsthatcontainaneventbuilderusingswitchingnetworktechnologies.QualityofService(QoS)isatechniqueforcongestioncontrol.RecentLinuxreleasesprovideQoSinthekerneltomanagenetworktraffic.Wehaveanalyzedthepacket-lossandpacketdistributionfortheeventbuilderprototypeoftheAtlasTDAQsystem.WeusedPC/LinuxwithGigabitEthernetnetworkasthetestbed.TheresultshowedthatQoSusingCBQandTBFeliminatedpacketlossonUDP/IPtransferwhiletheUDP/IPtransferinbesteffortmadelotsofpacketloss.TheresultalsoshowedthattheQoSoverheadwassmall.WeconcludedthatQoSonLinuxperformedefficientlyinTCP/IPandUDP/IPandwillhaveanimportantroleoftheAtlasTDAQsystem.

简介：Concreteinreinforcedconcretestructure(RC)isgenerallyundersignificantcompressivestressload.Toguaranteerequiredqualityandductility,varioustestshavetobeconductedtomeasuretheconcrete'scompressivestrengthbasedonACI(AmericanConcreteInstitute)code.Investigationsofrecentdevastatingcollapsesofstructuresaroundtheworldshowedthatsomeofthecollapsesdirectlyresultedfromthepoorqualityoftheconcrete.Thelessonlearnedfromthesetragediesisthatguaranteeinghighqualityofconcreteisoneofthemostimportantfactorsensuringthesafetyofthereinforcedconcretestructure.Inordertoensurehighqualityofconcrete,anewmethodforanalyzingandevaluatingtheconcreteproductionprocessiscalledfor.Inthispaper,theindicesoffitandstabledegreeareproposedasbasistoevaluatethefitnessandstabilityofconcrete'scompressivestrength.Thesetwoindicesarecombinedtodefineandevaluatethequalityindexofthecompressivestrengthofconcrete.Principlesofstatisticsareusedtoderivethebestestimatorsoftheseindices.Basedontheoutcomeofthestudy,aconcretecompressivestrengthqualitycontrolchartisproposedasatooltohelptheevaluationprocess.Finally,anewevaluationproceduretoassessthequalitycontrolcapabilityoftheindividualconcretemanufacturerisalsoproposed.

简介：Thecontrolofcoreplasmaandimpuritylevelofedgeplasmahasbeengreatlyimprovedwiththedevelopmentofcontrolledfusiontechnology.Refractorymetaltungstenoritsalloywaspaidmoreattentionsowingtoitshighmeltingtemperature,goodthermal

简介：MechanicalqualityfactorQmisakeycharacteristicparameterofHigh-overtonebulkacousticresonator(HBAR).Theeffectsofstructureparameter(thickness)andperfor?manceparameters(characteristicimpedanceandmechanicalattenuationfactor)ofsubstrate,piezoelectricfilmandelectrodeconstitutingHBARonQmarecarriedout.TherelationshipsbetweenQmandtheseparametersareobtainedbyalumpedparameterequivalentcircuitinsteadofdistributedparameterequivalentcircuitneartheresonancefrequency,andthean?alyticalexpressionsoiQmaregiven.TheresultsshowthatQmincreasesnon-monotonicallywiththecontinuousincreaseofthesubstratethicknessforHBARwithcertainpiezoelectricfilmthickness,anditapproachestothesubstratematerialmechanicalqualityfactorasthesubstratethicknessislarge.QmdecreaseswavilywiththecontinuousincreaseofthepiezoelectricfilmthicknessforHBARwithcertainsubstratethickness.SapphireandYAGwithlowmechanicallossareappropriateasthesubstratetogetalargerQm-TheelectrodelossmustbeconsideredsinceitcanreduceQm-ComparedwithAuelectrode,A1electrodewithlowerlosscanobtainhigherQmwhentheappropriateelectrodethicknessisselected.Inaddition,Qmdecreaseswiththeincreaseoffrequency.TheseresultsprovidethetheoreticalbasisforoptimizingtheparametersofHBARandshowthattrade-oflFsbetweenQmandmustbeconsideredinthedesignbecausetheirchangesareofteninconsistent.

简介：Arapidandeffectivemethod,solidphaseextractioncoupledwithhighperformanceliquidchromatography(SPE-HPLC),wasappliedtotheseparationandanalysisofginsenosides.WatersOASISHLBwasusedforconcentratingandpurifyingsamplesandAlltimaC_(18)(53mm×7mm,3μm)chromatographycolumnwasusedforseparatingginsenosideRg_1,Re,Rb_1,Rc,Rb_2andRd.Theseginsenosideswereanalyzedwithin20mininourgradientelutionprocessandtheequilibriumtimeofthechromatographycolumncostonly5min.Moreover,therewasnoobviousbaselinedriftinourexperiment.Thismethodwasusedtoanalyzethecontentsofginsenosidesindifferentginsengproductsforqualitycontrol.Fourginsengproductswerestudied,includingtwokindsofcapsules,onekindoftabletandonekindofinjection.Theresultsshowthatthemethoddevelopedinthispaperhadgoodaccuracy,linearityandprecision.Therefore,thismethodcouldbeappliedinqualitycontrolofginsengproducts.

简介：我们数字地调查优秀因素二维(2D)用在有限差别的时间域(FDTD)的上下文的一种辅助微分方程(果汁饮料)技术的photonic水晶(PC)microcavities方法。microcavities被点缺点在在ZnO(锌氧化物)六角形地有图案的空气洞格子形成矩阵。这些microcavities的优秀因素首先被背景电介质的吸收限制。我们证明在在有损耗、无损失的背景电介质的microcavities的优秀因素之间的比率除了吸收的大小取决于在洞模式和吸收背景电介质的地之间的重叠。当设计并且优化在有损耗的媒介形成的photonic水晶microcavities时，这些结果将是有用的。[从作者抽象]

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简介：管理顾客是必要的多样的愿望并且在生产在竞争并且最后为幸存保持生产费用尽可能低。在为不同产品生产分享资源是完成这个目标的一个重要方法。在生产使用一个普通过程的优点在文学被说。然而，数学模型或概念的模型不是足够的。这份报纸的主要目的是在质量和故障无常下面为multiproduct和多级式的生产开发数学模型。过程公共的想法在建议模型被合并。模型被在稳定、完美的生产环境下面从更早的MRPII和建议模型的及时要求时间表的一个马来西亚公司和比较收集的主要数据验证。结果的可估计的集中被观察。然而，建议模型在一个时间框架关于部分的可得到的地点正在带另外的信息。在确认以后，在无常下面的费用，能力和要求时间表上的过程公共的效果被检验。在生产的普通过程的使用以生产费用总是比非公共情形好，这被观察。然而，当系统受不了故障和一个优秀问题时，为公共图案的能力要求的增加为一个理想的系统是更高的，当它是更少时。

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简介：Depositionofamorphousparticles,asaprevalentproblemparticularlyinthespraydryingoffruitandvegetablejuices,isduetolow-molecular-weightsugarsandisstronglydependentontheconditionoftheparticlesuponcollisionwiththedryerwall.Thispaperinvestigatestheconditionoftheamorphousparticlesimpactingthewallatdifferentdryingconditionswiththeaimofelucidatingthedepositionmechanismandphysicalphenomenainthedryingchamber.Amodelsucrose-maltodextrinsolutionwasusedtorepresentthelow-molecular-weightsugar.Particledepositswerecollectedonsamplingplatesplacedinsidethedryerforanalysesofmoisturecontent,particlerigidity(usingSEM)andsizedistribution.Moisturecontentwasadoptedasageneralindicatorofstickiness.Productparticlescollectedatthebottomoftheexperimentaldryerwerefoundtohavehighermoisturethanparticledepositsonsamplersinsidethedryer.Moisturecontentprofileinthedryershowsthatapartfromtheatomizerregion,whereparticlesarerelativelywet,particledepositsatotherregionsexhibitsimilarlowermoisturecontent.Atthehighesttemperatureadoptedintheexperiments,particlesbecamerubberysuggestingliquid-bridgeformationasthedominantdepositionmechanism.Furtheranalysisonparticlessizedistributionrevealsaparticlesegregationmechanismwherebysmallerparticlesfollowpreferentiallytothecentralairstreamwhilelargerparticlestendtore-circulateinthechamber,aspredictedinpastCFDsimulation.ThefindingsfromthisworkwillformthebasisandprovidevalidatingdataforfurthermodelingofwalldepositionofamorphousparticlesinspraydryingusingCFD.

简介：Inthispaper,anewmethodoftopologicalcleanupforquadrilateralmeshispresented.Themethodfirstselectsapatchofmesharoundanirregularnode.Itthenseeksthebestconnectionoftheselectedpatchaccordingtoitsirregularvalenceusinganewtopologicaloperation:smallpolygonreconnection(SPR).Byreplacingtheoriginalpatchwithanoptimalonethathaslessirregularvalence,meshqualitycanbeimproved.Threeapplicationsbasedontheproposedapproachareenumerated:(1)improvingthequalityofaquadrilateralmesh,(2)convertingatriangularmeshtoaquadrilateralone,and(3)adaptingatrianglegeneratortoaquadrilateralone.Thepresentedmethodishighlyeffectiveinallthreeapplications.

简介：Thispaperpresentsamethodusingsimplephysicalvapourdepositiontoformhigh-qualityhafniumsiliconoxyni-tride(HfSiON)onultrathinSiO2bufferlayer.Thegatedielectricwith10A(1A=0.1nm)equivalentoxidethicknessisobtained.TheexperimentalresultsindicatethatthepreparedHfSiONgatedielectricexhibitsgoodphysicalandelectricalcharacteristics,includingverygoodthermalstabilityupto1000C,excellentinterfaceproperties,highdielectricconstant(k=14)andlowgate-leakagecurrent(Ig=1.9×103A/cm2@Vg=Vfb1VforEOTof10A).TaNmetalgateelectrodeisintegratedwiththeHfSiONgatedielectric.TheeffectiveworkfunctionofTaNonHfSiONis4.3eV,meetingtherequirementsofNMOSforthemetalgate.And,theimpactsofsputteringambientandannealingtemperatureontheelectricalpropertiesofHfSiONgatedielectricareinvestigated.

简介：Ionization-inducedelectroninjectioninlaserwakefieldaccelerators,whichwasrecentlyproposedtolowerthelaserintensitythresholdforelectrontrappingintothewakewave,hasthedrawbackofgeneratingelectronbeamswithlargeandcontinuousenergyspreads,severelylimitingtheirfutureapplications.Complextargetdesignsbasedonseparatingtheelectrontrappingandaccelerationstageswereproposedastheonlywayforgettingsmallenergy-spreadelectronbeams.Here,basedontheself-truncatedionization-injectionconceptwhichrequirestheuseofunmatchedlaser–plasmaparametersandbyusingtensofTWlaserpulsesfocusedontoagasjetofheliummixedwithlowconcentrationsofnitrogen,wedemonstratesingle-stagelaserwakefieldaccelerationofmulti-hundredMeVelectronbuncheswithenergyspreadsofafewpercent.TheexperimentalresultsareverifiedbyPICsimulations.

简介：[1]Ci,S.,Sharif,H.,2002.AVariableDataRateSchemetoEnhanceThroughputPerformanceofWirelessLANs.IEEECSNDSP.[2]Doufexi,A.,Armour,S.,Butler,M.,Nix,A.,Bull,D.,2001.AstudyoftheperformanceofHiperlan/2andIEEE802.11aphysicallayers.IEEEVTC,1:668-672.[doi:10.1109/VETECS.2001.944927][3]Doufexi,A.,Armour,S.,Karlsson,P.,Butler,M.,Nix,A.,Bull,D.,2002.AcomparisonoftheHiperlan/2andIEEE802.11aWirelessLANstandards.IEEECommunicationsMagazine,40(5):172-180.[doi:10.1109/35.1000232][4]Ferré,P.,Doufexi,A.,Chung-How,J.,Nix,A.,Bull,D.,2003.LinkAdaptationforVideoTransmissionoverCOFDMBasedWLANs.IEEESCVT.Eindhoven.[5]Girod,B.,Kalman,M.,Liang,Y.,Zhang,R.,2002.Advancesinchannel-adaptivevideostreaming.JournalofWirelessCommunicationsandMobileComputing,2(6):573-584.[doi:10.1002/wcm.87][6]Haratcherev,I.,Langendoen,K.,2004.HybridRateControlforIEEE802.11.ACMInternationalWorkshoponMobilityManagementandWirelessAccess(MobiWac),Philadelphia.[7]Haratcherev,I.,Langendoen,K.,Lagendijk,I.,Sips,H.,2002.D3.16:Application-directedAutomatic802.11RateControl.GigaMobileProject,TUDelf,Tech.Rep.[8]Haratcherev,I.,Langendoen,K.,Lagendijk,R.,Sips,H.,2004.SNR-basedRateControlinWaveLAN.ASCI2004Conference.PortZelande.[9]Haratcherev,I.,Taal,J.,Langendoen,K.,Lagendijk,R.,Sips,H.,2005.AutomaticIEEE802.11ratecontrolforstreamingapplications.WirelessCommunicationsandMobileComputing,5(4):421-437.[doi:10.1002/wcm.301][10]Hoffman,C.,Manshaie,M.H.,Turletti,T.,2005.CLARA:Closed-LoopAdaptiveRateAllocationforIEEE802.11WirelessLANs.IEEEWirelessCom'.Hawaii.[11]Holland,G.,Vaidya,N.,Bahl,P.,2001.ARate-AdaptiveMACProtocolforMulti-HopWirelessNetworks.Mobicom.Rome.[12]H264software,2005.H.264/AVCSoftwareCoordination.http://bs.hhi.de/～suehring/tml/.[13]IEEE802.11,1999.Part11:WirelessLANMediumAccessControl(MAC)andPhysicalLayer(PHY)Specifications.[14]IEEE802.11a,1999.Part11:WirelessLANMediumAccessControl(MAC)andPhysicalLayer(PHY)Specific

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简介：Inthispaper,weproposeaghostimagingschemewithfastWalsh–Hadamardtransform,namedGIFWHT.Inthescheme,Walsh–Hadamardpatternpairsareusedtoilluminateanobjecttogeneratepairsofdetectionresults,andthecorrespondingdifferentialdetectionresultisusedastheresultasthatfromtheconventionalbucketdetector.ByperformingthefastWalsh–Hadamardtransformon2~k(kisapositiveinteger)differentialdetectionresults,theimageoftheobjectcanberecovered.TheexperimentalandnumericalsimulationresultsshowthatthereconstructiontimeofGIFWHTisgreatlyreduced,andthequalityoftherecoveredimageisnoticeablyimproved.Inaddition,GIFWHTisrobustagainstinterferencefromenvironmentalilluminationandcouldsavememory.

简介：Potassiumdihydrogenphosphate(KDP)singlecrystalsaretheonlynonlinearcrystalscurrentlyusedforelectro-opticswitchesandfrequencyconvertersininertialconfinementfusionresearch,duetotheirlargedimensionandexclusivephysicalproperties.Basedonthetraditionalsolution-growthprocess,largebulkKDPcrystals,usuallywithsizesupto600×600mm2soastomakeafrequencydoublerforthefacilityrequirementloadinghighlyfluxofpowerlaser,canbegrowninstandardHolden-typecrystallizers,withoutspontaneousnucleationandvisibledefects,onetotwoordersofmagnitudefasterthanbyconventionalmethods.PurewaterandKDPrawmaterialwithafewionimpuritiessuchasFe,Cr,andAl(lessthan0.1ppm)wereused.Therapid-growthmethodincludesextremeconditionssuchastemperaturerangefrom60to35℃,overcoolingupto5℃,growthratesexceeding10mm/day,andcrystalsizeupto600mm.TheopticalparametersofKDPcrystalsweredetermined.Theopticalpropertiesofcrystalsdeterminedindicatethattheyareoffavorablequalityforapplicationinthefacility.

简介：DistributedBraggreflectors(DBRs)areessentialcomponentsforthedevelopmentofoptoelectronicdevices.Inthispaper,wefirstreporttheuseofthenanoporousGaN(NP-GaN)DBRasatemplateforregrowthofInGaN-basedlight-emittingdiodes(LEDs).Thewafer-scaleNP-GaNDBR,whichisfabricatedbyelectrochemicaletchinginaneutralsolution,hasasmoothsurface,highreflectivity(>99.5%),andwidespectralstopbandwidth(>70nm).ThechemicalcompositionoftheregrownLEDthinfilmissimilartothatofthereferenceLED,butthephotoluminescence(PL)lifetime,PLintensity,andelectroluminescenceintensityoftheLEDwiththeDBRareenhancedseveraltimescomparedtothoseofthereferenceLED.TheintensityenhancementisattributedtothelightreflectioneffectoftheNP-GaNDBRandimprovedcrystallinequalityasaresultoftheetchingscheme,whereastheenhancementofPLlifetimeisattributabletothelatter.