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  • 简介:<正>Thepaper"Acomparativestudyonthetransplantationofdifferentconcentrationsofhumanumbilicalmesenchymalcellsintodiabeticrat"DOI:10.3980/j.issn.2222-3959.2015.02.08waspublishedinNo.2issueofIJOon18thApril.Jia-HuiKong,DanZheng,SongChen,Hong-TaoDuan,Yue-XinWang,MengDong,JianSongClinicalCollegeofOphthalmology,TianjinMedicalUniversity,TianjinEyeHospital,TianjinInstituteofOphthalmology,

  • 标签: TIANJIN UMBILICAL COMPARATIVE corrected
  • 简介:IntheMay1989issueofCREI,the70%intheninthlineofthesecondpara-graph,firstcolumn,firstpageshouldbe23%.

  • 标签: hasbeen DYEING MARKED
  • 简介:CorrectionInthearticle"Publishingfor400MillionKids,"appearinginourDecember1994issue,twofactswereincorrectlystated:-TheChinese...

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  • 简介:IntroductionErrorsareunavoidableinlanguagelearning,however,toagreatextent,teachersinmostmiddleschoolsinChinaregarderrorsasundesirable,asignoffailureinlanguagelearning.Mostmiddleschoolsarestillusingthegrammar-translationmethodwhichaimsatencouragingstudentstoreadscientificworksandenjoyliteraryworks.Theothergoalsofthismethodaretogainagreaterunderstandingofthefirstlanguageandtoimprovethestudents’abilitytocopewithdifficultsubjectsandmaterials,i.e.todevelopthestudents’minds.Thepracticalpurposeofusingthismethodistohelplearnerspasstheannualentranceexamination."Toachievethesegoals,thestudentsmustfirstlearngrammarandvocabulary,...Grammaristaughtdeductivelybymeansoflongandelaborateexplanations...studentslearntherulesofthelanguageratherthanitsuse."(TangLixing,1983:11-12)

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  • 简介:分阶段执行多样的点缀是成像技术的一种新奇类型并且能被用来从未知阶段错误克服图象降级,例如大气的骚乱。在Zernike多项式上扩展的波前阶段从一双图象被估计(在里面焦点并且从焦点飞机)。在这份报纸,PDS的原则被分析,并且基因算法被用作反复的算法模仿一些特征,例如Zernike多项式鈥?模式的影响,阶段评价上的骚乱的振幅。因此,为图象的恢复的一个新方法被探索。CLC数字TN911.74

  • 标签: 斑点 相位变化 修正 光学信号处理
  • 简介:IntroductionDigitalstronggroundacelerationobservationinstrument,suchasPDR1,SSA1andSSR1producedbyKinemetricsInc.,USAandSCQ?..

  • 标签: successive FORMULA method\ FORCE BALANCED accelerometer\
  • 简介:·AIM:Toevaluateandcompareaspherictoricintraocularlens(IOL)implantationandasphericmonofocalIOLimplantationwithlimbalrelaxingincisions(LRI)tomanagelowcornealastigmatism(1.0-2.0D)incataractsurgery.·METHODS:Aprospectiverandomizedcomparativeclinicalstudywasperformed.Therewererandomlyrecruited102eyes(102patients)withcataractsassociatedwithcornealastigmatismanddividedintotwogroups.ThefirstgroupreceivedtoricIOLimplantationandthesecondonemonofocalIOLimplantationwithperipheralcornealrelaxingincisions.Outcomesconsideredwere:visualacuity,postoperativeresidualastigmatism,endothelialcellcount,theneedforspectacles,andpatientsatisfaction.Todeterminethepostoperativetoricaxis,allpatientswhounderwentthetoricIOLimplantationwerefurtherevaluatedusinganOPDScanIII(NidekCo,Japan).Follow-uplasted6mo.·RESULTS:Themeanuncorrecteddistancevisualacuity(UCVA)andthebestcorrectedvisualacuity(BCVA)demonstratedstatisticallysignificantimprovementaftersurgeryinbothgroups.Attheendofthefollow-uptheUCVAwasstatisticallybetterinthepatientswithtoricIOLimplantscomparedtothosepatientswhounderwentimplantationofmonofocalIOLplusLRI.Themeanresidualrefractiveastigmatismwasof0.4DforthetoricIOLgroupand1.1DfortheLRIgroup(P<0.01).Nodifferencewasobservedinthepostoperativeendothelialcellcountbetweenthetwogroups.·CONCLUSION:Thetwosurgicalproceduresdemonstratedasignificantdecreaseinrefractiveastigmatism.ToricIOLimplantationwasmoreeffectiveandpredictablecomparedtothelimbalrelaxingincision.

  • 标签: LOW corneal ASTIGMATISM TORIC intraocular lenses
  • 简介:为了更好吸收,推进了初学者运作垂直更健全(ATOVS)发光数据并且为一个数字模型,提供更精确的起始的领域二个偏爱修正计划被采用改正ATOVS发光数据。在二个计划的差别在空气团偏爱修正躺在预言者使用。在计划1使用的预言者都从模型被获得第一猜测,当在计划2的那些来自第一猜测的模型和发光观察时。从二个计划的结果证明在偏爱修正以后,观察剩余变得对Gaussian分布更小、更靠近。为土地和海洋数据集合,从计划1获得的结果类似于从计划2的那些,它显示预言者能在ATOVS数据的偏爱修正被使用。

  • 标签: ATOVS 发光数据 偏导修正计划 当模特儿第一猜测
  • 简介:Inthecontextoftowermeasuredradiationdatasets.followingthecorrectionprinciplemeetingadiagnosticequationindataqualitycontrolandintermsofatechniqueformodelconstructionondataandANN(artificialneuralnetwork)retrievalforBPcorrectionofradiationmeasurementswithrougherrorsavailable,aBPmodelispresented.Evidencesuggeststhatthedevelopedmodelworkswellandissuperiortoaconvenientmultivariatelinearregressionmodel,indicatingitswideapplications.

  • 标签: artificial neural network(ANN) BP(backward propagation)net ROUGH
  • 简介:Anoptimizationmethodisbasedtodesignasnowfallestimatemethodbyradarforoperationalsnowwarning,anderrorestimationisanalyzedthroughacaseofheavysnowonMarch4,2007.Threemodifiedschemesaredevelopedforerrorscausedbytemperaturechanges,snowflaketerminalvelocity,thedistancefromtheradarandcalculationmethods.Duetotheimprovements,thecorrelationcoefficientbetweentheestimatedsnowfallandtheobservationis0.66(exceedingthe99%confidencelevel),theaveragerelativeerrorisreducedto48.74%,andthemethodisabletoestimateweaksnowfallof0.3mm/handheavysnowfallabove5mm/h.Thecorrelationcoefficientis0.82betweentheestimatedsnowfallfromthestations50to100kmfromtheradarandtheobservation.Theimprovedeffectisweakwhentheinfluenceofthesnowflaketerminalvelocityisconsideredinthosethreeimprovementprograms,whichmayberelatedtotheuniformecho.Theradarestimateofsnow,whichisclassifiedbythedistancebetweenthesampleandtheradar,hasthemostobviouseffect:itcannotonlyincreasethedegreeofsimilarity,butalsoreducetheoverestimateandtheundervaluationoftheerrorcausedbythedistancebetweenthesampleandtheradar.Theimprovedalgorithmfurtherimprovestheaccuracyoftheestimate.Theaveragerelativeerrorsare31%and27%fortheheavysnowfallof1.6to2.5mm/handabove2.6mm/h,respectively,buttheradaroverestimatesthesnowfallunder1.5mm/handunderestimatesthesnowfallabove2.6mm/h.Radarechomaynotbesensitivetotheintensityofsnowfall,andtheconsistencyshownbytheerrorcanbeexploitedtoreviseandimprovetheestimationaccuracyofsnowforecastintheoperationalwork.

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  • 简介:在这篇论文,我们学习保存的强壮的稳定性(SSP)推迟的修正时间discretization方法的一个班的性质,为解决,method-of-fines策划接近夸张部分微分方程。

  • 标签: 稳定性 离散化 校正时间 微分等式
  • 简介:Inadaptiveoptics(AO)system,thephasecompensationcapabilityislimitedgreatlybytheactuatornum-berofthedeformablemirror(DM).TheactuatornumberofDMismainlyrestrictedbythemanufacturetechniques.ThespatialcorrectioncapabilityofAOsystemcanbeimprovedbytwoormorecombinational-DMs(CDMs)withconjugationrelationship.TheCDMAOsystemforwavefrontcorrectionisbuilt,whichconsistsoftwo32-elementDMs.Theexperimentalresultsareinagreementwiththenumericalsimulationresults.ItisindicatedthattheCDMAOsystemprovidesbettercorrectionperformancethanthesingle32-elementDMAOsystem.

  • 标签: 自适应光学系统 镜像 相位校正 相位补偿
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  • 简介:BackgroundAlthoughalotofstudieshavebeenperformedonthelongtermoutcomeinadultswithrepairedtetralogyofFallot(TOF)indevelopedcountries,butrareinformationforprimarycorrectionofadultTOFisavailable.Theresearchfocusingontheeffectoftransanularpatch(TAP)forprimarycorrectionofTOFinadulthoodisstillabsent.Viaretrogradeanalysisof7-yearfollow-up,thisstudywasdesignedtoexploretheeffectofthetransanularpatchforprimarycorrectioninadultTOFonthesurgicaloutcome,postoperativecardiacfunctionandmorbidity,aswellastoaddressthemanagementofthecomplication.MethodsAtotalof151consecutiveadultpatients(age≥18)whounderwentprimaryradicalcorrectionofTOFform2007-2014wereselectedanddividedintoTAPandnon-TAPgroupsbasedontheEACTSdatabase.Resultsofdemographicstatisticcharacteristics,echocardiography,color-Dopplerechocardiography,cardiovascularenhancedcontrastcomputedtomography(CT),and/orcardiaccatheterization;intraoperativeinformation,postoperativeresultsandoutcomeswerereported.Duringfollow-up,shorttermwasdefinedwithin3monthsafterdischarge,andmidtermwasdefinedas6-12monthsafterdischarge.ResultsTotalpostoperativemortalitywas5.96%inallthecases,6.96%inTAPgroup,and2.78%(1/36)innon-TAPgroup.Therewasnosignificantdifferencebetweentwogroups.Follow-upperiodrangedfrom3monthsto62months.Readmissionoccurredandwasfollowedbymedicaltreatmentwithoutre-dosurgeryin6cases(3.97%).TheshorttermechocardiographydemonstratedthatpulmonaryregurgitationandshorttermtricuspidregurgitationafterdischargeinTAPgroupweremoresevere(P<0.001).Theshorttermresidualpulmonarystenosis(RVOTO)severityafterdischargeinTAPgroupwaslesssevere(P=0.018).MidtermechocardiographyafterdischargedemonstratedpulmonaryregurgitationandtricuspidregurgitationinTAPgroupwerestillmoresevere(P=0.003).TheseverityofresidualpulmonarystenosisinT

  • 标签: 成人 Logistic回归分析 超声心动图 校正死亡率 计算机断层扫描 补丁