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……
简介:Anovelpre-ionizationschemeofhelicaltransverse-pulsedpre-ionizationinalongitudinaldischargeCO2laserispresented.Thelasertubeismadeofglasswithinnerdiameterof7.5mmanddischargelengthof50cm.Thelaserperformancecharacteristicsasfunctionsofparameters,suchaspressure,chargingcapacitanceandappliedvoltage,areinvestigated.Comparedwiththesamelaserstructurewithoutpre-ionization,themaximumpulseenergyimprovesby23%,theoptimumelectro-opticalefficiencyincreasesby31%,andthespecificoutputenergyreaches26J/(L·atm).
简介:Fora〈r〈b,theapproachofLiandZhou(2014)isadoptedtofindjointLaplacetransformsofoccupationtimesoverintervals(a,r)and(r,b)foratimehomogeneousdiffusionprocessbeforeitfirstexitsfromeitheraorb.Theresultsareexpressedintermsofsolutionstothedifferentialequationsassociatedwiththediffusionsgenerator.Applyingtheseresults,weobtainmoreexplicitex-pressionsonthejointLaplacetransformsofoccupationtimesforBrownianmotionwithdrift,BrownianmotionwithalternatingdriftandskewBrownianmotion,respectively.
简介:
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.
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.
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;
简介:AsinterestinlearningEnglishisbecomingmoreandmoreintense,manykindergartensregardchildren,sEnglisheducationasacompulsorycourse.ButthetraditionalteachingmethodisdifficultforchildrenwhoarejustgettingstartedwithEnglish.Thetraditionalteachingmethoddoesn’tworkeffectivelybecauseitcan’tstimulatechildren’interestofEnglishlearning.ThispapertriestoapplyTPRapproachtoEnglishteaching.Inthispaper,theauthortakesDandelionkindergarteninShaanxiUniversityofscienceandtechnologyasanexample,usesobservationalmethod,communicativeapproachandavarietyofEnglishTeachingMethods.ItrevealsthattheTPRapproachwillbeofgreatvalueinteachingpreschoolchildrenEnglish.Hopefully,thisstudywillprovidesomeinspirationforteacher'schoiceofteachingmethodsandhelpusetheTPRapproachmoreeffectively.
简介:Gapinducedpie-pulseinhibition(Gap-PPI)ofacousticstartlereflexhasbeenusedasameasurementoftinnitusinanimalmodels.However,whetherthistestissensitivetodetecttinnitusinhumansisstillunclear.Basedonthetestingprocedureusedinanimalstudies,ahumansubjecttestingmethodwasformulatedandconductedtoinvestigateifasimilarresultcouldbefoundintinnituspatients.Audiologicandtinnitusassessmentsandacousticstartlereflexmeasurementswereperformedonseventinnitussubjectsandnineagematchedsubjectswithouttinnitus.TherewasnosignificantdifferencefoundbetweenthecontrolandtinnitusgroupontheGap-PPlacrossthefrequenciesevaluated.Theamplitudeofthestartleresponseinthetinnitusgroupwithnormalhearingthresholdswassignificantlyhigherthanthecontrolgroupandthosewithtinnitusandhearingloss.Thispreliminaryresultsuggeststhathyperexcitabilityinthecentralauditorysystemmaybeinvolvedintinnitus.Therewasnocorrelationbetweenhearingthresholdsandtheincreasedamplitudeofstartleresponse.
简介:ThesynchrodoublepulsesignalmodeisfreuqentlyusedinShortBaseLine(SBL)underwaterpositioningsystemsoastoobtaintheinforma-tionofbothdistanceanddepthofatargetsimultaneously.Howerer,thissignalmodealsobringsaboutrangingindistinctnessresultinginashorterpositioningdistancemuchlessthanthatlimitedbytheperiodofthesynchrosignal.Thispaperpresentsahardwaredistance-gatedataacquiringscheme.Itputstheoriginaldatasenttothecomputerinorderof"directfirstpulse—depthinformationpulse(orfirstpulsereflectedbywatersurface)…"toguaranteetheeffectivepositioningdistanceofthesystem.Ithastheadvan-tageofreducingtheprocessingtimeofthecomputerthusensuringtherealtimefunctioningofthesystem.Afigureoftheorbitofanunderwatermovingtargetmeasuredinpracticeisattachedtotheendofthepaper.
简介:Objective:Toreportasurgicalmethodforthetreatmentofpre-auricularfistulatolowerpost-operativerecurrencerate.Methods:Clinicaldataof187patientswithpre-auricularfistulawhounderwentenblocresectionattheAffiliatedHospitalofLuzhouMedicalCollegefromAugust2006toNovember2012wereretrospectivelyreviewed.FactorsthatmightaffecttheprognosisfollowingEnblocfistularesectionborderedbythesuperficialtemporalisfascia,helixperichondriumandauriculocephalicsulcuswereinvestigated.Results:Ofthe187patients,181achievedprimaryhealingand6endedupwithdelayedhealing.Duringthefollow-upperiod(onetosevenyears),therewere4casesofrecurrence(2.1%).Conclusions:Cleardemarcationofsurgicalresectioncanfacilitateeasyandthoroughresectionofpreauricularfistulaandleadtolowrecurrencerate.Propertimingandcarefulsearchforpotentialfistulabranchesarethetwocrucialfactorsaffectingprognosis.