学科分类
/ 25
497 个结果
  • 简介:Abstract:Languageteachersarefrequentlyconfrontedwithmultiplerolestheyhavetoplayinteachingwritingonundergraduatelevel:beinganadviser,aninstructor,asupervisor,areaderandagrader.Itisoftenhardforateachertoswitchfromoneroletoanotherandprovidestudentswithpracticable,applicableinstructions.Theconventionalpre-writingandafter-writinginstructionsareconvenientandhelpful.Oftenforstudents,concreteandspecificcommentscanhelpthemmorethanpost-writingcomments,whichleavesmoresuggestionsandhopetostudentsthanspecifichelp.Inmodeledcompositiontheteacherofferssuggestionsinthebeginning,attheend,andmosthelpfully,inthemargins.Thesespecificformsofsuggestionscancomeinbothcontentandform,andcaninvolvemacroandmicrolanguagepoints.Differentgenresofinstructionofwritingcanbemodeled.Themodelscanbegivenorally,inwriting,byelectronicandconventionalmeans.Keywords:instruction,composition,undergraduatewritingIntroductionInteachingcomposition,teacherssometimeslamentsforbeingunabletohelpwithcontentandform,withstructureaswellasexpression.Forlowerintermediatelearners,inparticular,veryfundamentalorgrammaticalaspectscanappearasveryurgentifthesemeanagoodstarting-pointtomakeprogress.Theymayexpecttheteachertoimparthisorherexperienceinplanning,formattingandoutliningthewholeprose.Theymayalsoexpecthimorhertogivetheexpertiseastotheapproachandattitudetospecialgenre,suchasEST.Tofulfillsuchademandingtasksuccessfully,itisindeednecessarytobreakthewholeprosewritingintosmallbitsandtomakeitmanageableandapproachable.Insuchcase,asingleparagraph,ratherthananentirelyessaymaybemoreusefulthanalongtextasthebasisonwhichtosetthemodels……

  • 标签:
  • 简介:Anovelpre-ionizationschemeofhelicaltransverse-pulsedpre-ionizationinalongitudinaldischargeCO2laserispresented.Thelasertubeismadeofglasswithinnerdiameterof7.5mmanddischargelengthof50cm.Thelaserperformancecharacteristicsasfunctionsofparameters,suchaspressure,chargingcapacitanceandappliedvoltage,areinvestigated.Comparedwiththesamelaserstructurewithoutpre-ionization,themaximumpulseenergyimprovesby23%,theoptimumelectro-opticalefficiencyincreasesby31%,andthespecificoutputenergyreaches26J/(L·atm).

  • 标签: 二氧化碳激光器 离子化 螺旋状 纵向放电 电光效应
  • 简介:Fora〈r〈b,theapproachofLiandZhou(2014)isadoptedtofindjointLaplacetransformsofoccupationtimesoverintervals(a,r)and(r,b)foratimehomogeneousdiffusionprocessbeforeitfirstexitsfromeitheraorb.Theresultsareexpressedintermsofsolutionstothedifferentialequationsassociatedwiththediffusionsgenerator.Applyingtheseresults,weobtainmoreexplicitex-pressionsonthejointLaplacetransformsofoccupationtimesforBrownianmotionwithdrift,BrownianmotionwithalternatingdriftandskewBrownianmotion,respectively.

  • 标签: Laplace transform OCCUPATION time time-homogeneous diffusion
  • 简介:Palm的粉丝们等待这一时刻已经有很长的时间了,这次借着推出全新的操作系统WebOS.PalmPre这款新机也成为大众关注的焦点。要知道该产品发布后.Palm的股价在两天内上涨了70%之多,从中自然可以看出业界对其前景的看好程度。

  • 标签: PRE PALM 操作系统 产品发布 WEB OS
  • 简介:Detainees’rightsinpre-trialdetentionhousesareameansofassessingacountry’shumanrightsprotection.Asalegalfacilityforcarryingoutcriminaldetention,apre-trialdetentionhouseshouldremainneutralandsafeguarddetainees’substantiveandproceduralrights.Itshouldbeanimportantbaseforthecountrytorespectandprotecthumanrights.Atthemacrolevel,protectingdetainees’rightscomprisestwoaspects:1)proceduralrights,regardingwhichtheprincipleofpresumptionofinnocenceshouldbeapplied;and2)detaineetreatment,regardingwhichtheprincipleofsocializationshouldbeapplied.AtthecurrentstageofChina’srightsprotectionsituation,Chinashouldimprovedetainees’rights,suchastherighttohaveanindividualbed,therightstohealthcareandreligiousfreedom,rulesregardingtheuseoflegirons,andtransparencyandindependentmonitoringmechanisms.

  • 标签: DETENTION HOUSE DETAINEE HUMAN RIGHTS
  • 简介:Thedistributionofacetylcholinesterase(AChE)-positivestructuresinthedevelopingratspinalcordwasstudiedwithAChE-histochemistry.AChE-positiveperikaryawerefirstseenonembryonicday14(E14)intheventrolateralportionofthespinalcord.Fromthattimeonward.AChE=containingcellsappearedgraduallyintheintermediategray,dorsalhornandlateralspinalnucleusofthespinalcordinaventral-to-dorsal,andlateral-to-medialorder.Noobviousrostral-to-caudalsequencewasfound.Atbirth,thedistributionpatternofAChE-positiveperikaryawasbasicallysimilartothatinadults.AfterbirthadramaticincreaseintheAChEstainingintensityextendedfrompostnatalday5(P5)topostnatalday21(P21),Inaddition,twophasesoftransientAChEstainingwereobservedintheexternalsurfaceofthedorsalhornfromembryonicday15(E15)toembryonicday21(E21)andinthemarginallayerfromembryonicday21(E21)topostnatalday14(P14),respectively.

  • 标签: 大鼠脊髓 乙酰胆碱酯酶 组织化学 初生前发育 生后发育
  • 简介:Furnaceareaisregardedaslooperbetweencastingandhotrolling,whichisveryimportantformaterialflowbalanceandproductionorganizationaswellastemperatureregulationetc.Inparticular,whendealingwithenergysavingandemissionreductionandheatingqualityimproving,pre_heatingfurnaceispaidmoreattention.Theradicaltargetforpreheatingfurnaceistotransferheatingenergyattheleastcost.Asweknow,thepreheatingfurnaceisadissipationsystemtoobeyconservationofenergylaw,thatistosaythatinputenergyalwaysequalstooutputenergy,inthemeantime,thewholeenergyconsumingisnotreversible.Thereforeincreasingtheefficiencyofusingenergyisuppermost.Inthispaper,heatingtransferefficiencyisanalysedandmathematicalexpressionisgivenbasedonconservationofenergylaw.Typicaloptimalmethodstoimprovepreheatingfurnacetransferefficiencycomingfromforeignfactoriesarepresented.Accordingtothesemethods,everyfurnacezonetemperaturesascontrolvariable,targetdischargingtemperatureandtemperaturedifferenceinslabthicknessandthetemperaturebetweenneighbouringzonesaswellaszonetemporarytemperatureasrestrictions,minimalenergyconsumingasoptimizingtarget.Baosteelpreheatingfurnacemodelstructureandthecomplicatedmappingrelationofcontrolparametersetandstatesetandaimsetarepresented.Importantbasicmodelsinthepreheatingfurnacemodelsystemareanalysedincludingtemperaturetrackingmodelandtemperatureforecastingmodelanddischargingpacingmodelandslabheatingcurve.Firstslabtemperaturemodelstructureanditsperiphericparameterareintroduced;secondtwopacingmodelsaregivenincludingtimingpacingmodeusingfixeddischargingintervalandmillpacingcontrolmodeusingmillrollingpacingwhileBaosteelpacingforecastingmodelusinglongtermandshorttermforecastingmode)isgiven;thirdaheatingcurvemathematicalmodelconsideringheatingqualityandrollingpaceandenergyconsumingispresented;

  • 标签:
  • 简介:AsinterestinlearningEnglishisbecomingmoreandmoreintense,manykindergartensregardchildren,sEnglisheducationasacompulsorycourse.ButthetraditionalteachingmethodisdifficultforchildrenwhoarejustgettingstartedwithEnglish.Thetraditionalteachingmethoddoesn’tworkeffectivelybecauseitcan’tstimulatechildren’interestofEnglishlearning.ThispapertriestoapplyTPRapproachtoEnglishteaching.Inthispaper,theauthortakesDandelionkindergarteninShaanxiUniversityofscienceandtechnologyasanexample,usesobservationalmethod,communicativeapproachandavarietyofEnglishTeachingMethods.ItrevealsthattheTPRapproachwillbeofgreatvalueinteachingpreschoolchildrenEnglish.Hopefully,thisstudywillprovidesomeinspirationforteacher'schoiceofteachingmethodsandhelpusetheTPRapproachmoreeffectively.

  • 标签: KINDERGARTEN TPR TEACHING method CHILDREN English
  • 简介:Gapinducedpie-pulseinhibition(Gap-PPI)ofacousticstartlereflexhasbeenusedasameasurementoftinnitusinanimalmodels.However,whetherthistestissensitivetodetecttinnitusinhumansisstillunclear.Basedonthetestingprocedureusedinanimalstudies,ahumansubjecttestingmethodwasformulatedandconductedtoinvestigateifasimilarresultcouldbefoundintinnituspatients.Audiologicandtinnitusassessmentsandacousticstartlereflexmeasurementswereperformedonseventinnitussubjectsandnineagematchedsubjectswithouttinnitus.TherewasnosignificantdifferencefoundbetweenthecontrolandtinnitusgroupontheGap-PPlacrossthefrequenciesevaluated.Theamplitudeofthestartleresponseinthetinnitusgroupwithnormalhearingthresholdswassignificantlyhigherthanthecontrolgroupandthosewithtinnitusandhearingloss.Thispreliminaryresultsuggeststhathyperexcitabilityinthecentralauditorysystemmaybeinvolvedintinnitus.Therewasnocorrelationbetweenhearingthresholdsandtheincreasedamplitudeofstartleresponse.

  • 标签:
  • 简介:ThesynchrodoublepulsesignalmodeisfreuqentlyusedinShortBaseLine(SBL)underwaterpositioningsystemsoastoobtaintheinforma-tionofbothdistanceanddepthofatargetsimultaneously.Howerer,thissignalmodealsobringsaboutrangingindistinctnessresultinginashorterpositioningdistancemuchlessthanthatlimitedbytheperiodofthesynchrosignal.Thispaperpresentsahardwaredistance-gatedataacquiringscheme.Itputstheoriginaldatasenttothecomputerinorderof"directfirstpulse—depthinformationpulse(orfirstpulsereflectedbywatersurface)…"toguaranteetheeffectivepositioningdistanceofthesystem.Ithastheadvan-tageofreducingtheprocessingtimeofthecomputerthusensuringtherealtimefunctioningofthesystem.Afigureoftheorbitofanunderwatermovingtargetmeasuredinpracticeisattachedtotheendofthepaper.

  • 标签: positioning underwater reflected GUARANTEE FIGURE acquiring
  • 简介:Objective:Toreportasurgicalmethodforthetreatmentofpre-auricularfistulatolowerpost-operativerecurrencerate.Methods:Clinicaldataof187patientswithpre-auricularfistulawhounderwentenblocresectionattheAffiliatedHospitalofLuzhouMedicalCollegefromAugust2006toNovember2012wereretrospectivelyreviewed.FactorsthatmightaffecttheprognosisfollowingEnblocfistularesectionborderedbythesuperficialtemporalisfascia,helixperichondriumandauriculocephalicsulcuswereinvestigated.Results:Ofthe187patients,181achievedprimaryhealingand6endedupwithdelayedhealing.Duringthefollow-upperiod(onetosevenyears),therewere4casesofrecurrence(2.1%).Conclusions:Cleardemarcationofsurgicalresectioncanfacilitateeasyandthoroughresectionofpreauricularfistulaandleadtolowrecurrencerate.Propertimingandcarefulsearchforpotentialfistulabranchesarethetwocrucialfactorsaffectingprognosis.

  • 标签: Pre-auricular FISTULA TEMPORALIS FASCIA Helix PERICHONDRIUM