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简介:Thisworkproposesamethodtoconcurrentlycalibratemultipleacousticspeedsindifferentmediumswithaphotoacoustic(PA)andultrasound(US)dual-modalityimagingsystem.First,physicalinfrastructureinformationofthetargetisacquiredthroughaUSimage.Then,werepeatedlybuildPAimagesaroundaspecialtargettoyieldthebestfocusedresultbydynamicallyupdatingtheacousticspeedsinadifferentmediumofthetarget.Withthesecorrectacousticpropagationvelocitiesintheaccordingmediums,wecaneffectivelyoptimizethePAimagequalityastheexperimentsproved,whichmightbenefitfutureresearchinbiomedicalimagingscience.
简介:Inordertobetterunderstandthereasonswhyeucalyptveneercheckseasilyandseverely,woodsamplesofthreeeucalyptspecieswereselected,andtheiranatomicalandphysicalpropertieswereexaminedaccordingtoconventionalmethodsandthenationalstandards.Theeffectsofvariancesincellwallthicknessofwoodfibreandvessel,anddiameterofthecelllumenaswellasthetissueratioonthequalityofplywoodveneerwereanalysed.Theresultsshowthat:1)ThereisagreatdifferenceinfibrecellwallthicknessanddiameterofthecelllumenbetweenearlywoodandlatewoodofEucalyptusdelegatensis.2)E.obliquahasahighwoodfibretissueratioandthethickestfibrecellwall,butthedifferenceinthefibrecellwallthicknessbetweenearlywoodandlatewoodisthesmallest.3)ThewoodfibretissueratioofE.regnansissmallerthanthatofE.obliqua,anditswoodfibrecellwallisthethinnestandthereisonlyaverysmalldifferenceinfibrecellwallthicknessbetweenearlywoodandlatewood.Thedifferenceinthediameterofwoodfibrecelllumenamongearlywood,transitionareaandlatewoodisalsosmall.4)E.delegatensishasthehighesttangentialshrinkagerateandradial-tangentialshrinkagerate,andE.obliquahasthelowest.Itisthevariabilityofwoodanatomicalpropertiesofthesespeciesthatcausethedifferenceintheveneershrinkage,andthenaffectsplywoodveneerquality.
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简介:摘要:素质教育开启了我国教育改革之路,也成为我国教学改革工作的重要原动力,促使我国的传统教学理念发生了颠覆性的改变,由以知识教授为本的教学模式逐步转变为以提升学生核心素养为基础的全新教学模式。英语作为小学教学中一门重要的学科内容,其阅读课程的开展如同语文的阅读教学课程,其阅读质量的提升与学生阅读习惯的培养有着紧密的联系,同时也是促进学生阅读能力提升的重要法宝。为此,如何强化学生的英语阅读能力,对于学生的个性化成长起到了事半功倍的功效。本文以人教版小学英语的《Then and now》一课作为切入点,着重分析了核心素养指导下的小学英语阅读教学的提升策略。
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。
简介:Inthedemocraticandconstitutionalsystemthepowerofthewordofthelaworiginatesfrompeople'ssovereignty.Thelegalpaper,basedonademocraticmandate,mustbeclearlyunderstandablebytheaddressee.Whenthevirtuouscommunicativeprocessbreaksup,thedemocraticprocess,thatis,itssamefoundation,comestoanend.ThelegislativeItaliantextsaremainlyincomprehensibleandcontorted.Thebadqualityoflegislation,derivingfrommanysocialandculturalfactors,hasprovokedacrisisintherelationbetweeninstitutionsandcitizensandbadconsequencesontheefficiencyoftheadministrativeapparatusandtheeconomiclifeofthecountrv.Onthecontrary.
简介:Intheanalysisofhowenvironmentalregulationaffectsthecomparativeadvantageoftrade,existingliteratureignoresindustry’sinherentheterogeneity,whichdrawsremarkablydifferentconclusions.Inviewofthis,thepaperanalyzedthemechanismofenvironmentalregulationontheexportqualityofdifferentindustriesfromtheperspectiveoffactorinputstructureheterogeneity.BasedonthepaneldataofChina’smanufacturingindustry,thepaperusedthesystemgeneralizedmethodofmomentsmethodtoexaminetheheterogeneityinfluenceofenvironmentalregulationonmanufacturingexportquality.Thestudyfoundthat,first,environmentalregulationaffectedtheexportqualityupgradeofthemanufacturingsectorthroughoffseteffectandcompensationeffect,andthedirectionoftheimpactwouldmainlydependontheindustry’sfactorinputstructure.Second,forindustrieswithlargerfixed-assetinvestment(FAI)ratiointhefactorinputstructure,thecurrentenvironmentalregulationpolicywasnotconducivetotheexportqualityupgradingoftheindustries.However,therewasasignificantU-shapeddynamicrelationshipbetweenthem.Asenvironmentalregulationsbecamestricter,whenregulatorystringencywentbeyondtheinflectionpoint,thepolicywouldpromotetheupgradingofexportquality.ButforindustrieswithsmallerproportionofFAI,environmentalregulationexertedafavorableimpactontheexportqualityupgrade,followingaJ-shapedmarginalgrowthcurve.Third,forindustrieswithdifferentfactorinputstructure,theirexportqualityhadbeeneffectivelyupgradedasexpectedbyfactorslikehumancapitalinvestment,independentR&D,technologyintroduction,andforeigndirectinvestment;butraisingpercapitacapitalstockandexpandingenterprisesizedidnotproducesignificantdirectimpactonexportqualityupgrade.Theseconclusionsremainedrobustafterusingdifferentmeasurementmethodsandreplacingwithothervariables.Therefore,thispapersuggeststhatgovernmentsshouldt
简介:Basedonauditoryperipheralsimulationmodel,anewSoundQualityObjectiveEvaluation(SQOE)methodispresented,whichcanbeusedtomodelandanalyzetheimpactsofhead,shoulderandotherpartsofhumanbodyonsoundwavetrans-mission.Thismethodemploystheartificialheadtechnique,inwhichtheheadrelatedtransferfunctionwastakenintoaccounttotheouterearsimulationphase.First,abionicartificialheadwasdesignedastheouterearmodelwithconsideringtheoutersoundfieldinviewoftheoryandphysicalexplanations.Thentheauditoryperipheralsimulationmodelwasbuilt,whichmimicsthephysiologicalfunctionsofthehumanhearing,simulatingtheacousticsignaltransferprocessandconversionmechanismsfromthefreefieldtotheperipheralauditorysystem.Finally,performancecomparisonwasmadebetweentheproposedSQOEmethodandArtemiSsoftware,andtheverificationsofsubjectiveandobjectiverelatedanalysisweremade.Resultsshowthattheproposedmethodwaseconomical,simple,andwithgoodevaluationquality.
简介:ByimplementingtheARGOprogram,alargenumberofT-Sprofilescanbeobservedintheworldocean.However,itisverydifficulttoexaminechangesofthesensitivityofthesensorsequippedattheARGOfloats,becauseitisdifficulttounderstandtheirconditionintheseaandthereliabilityofthedata.Qualitycontrolmustbedoneinordertoavoidthewrongconclusiondeducedfromthewrongdata.OneoftherealisticmethodsforqualitycontroloftheARGOdataisthecomparisonwiththelocalclimatology.HighqualityclimatologicalT-SmodelsinnorthwestPacifichavebeenbuiltbasedontheNansenbottledataandCTDdataforthequalitycontrolinNMDIS.ThemodelsareusedtochecktheARGOdatainthisareaandhavegotgoodresult.
简介:gamma-LiAlO2单身者水晶是有希望的底层为轧了heteroepitaxy.In这篇论文,我们在场由修改Czochralski的大尺寸的LiAlO2水晶的生长方法。水晶质量被高分辨率的X光检查衍射并且化学蚀刻描绘。结果证明成长得当的水晶在17.7-22.6弧秒的半最大值(FWHM)与完整的宽度有完美的质量并且蚀刻坑密度(0.3-2.2)x10~4cm~(在整个水晶boule的水晶boule.The底部的-2)显示出最好的质量。光传播系列从对水晶从0.2~5.5亩m是透明的并且完全变得在6.7亩m波长附近吸收的红外展览紫外。在近紫外的区域的光吸收边是大约191nm。