简介:Puttingforwardbillsandproposalsistherightofpeople’sdeputiesendowedbylawandtheConstitutionandoneoftheimportantwaysforthemtoparticipateinthemanagementofstateaffairsonbehalfofthepeople.Itisalsooneofthemajorchannelstovoicethepopularfeelingsandwills.Withthedeepeningofdemocracyandlegalconstructioninrecentyears,people’sdeputieshavebecomemoreconsciousofparticipatinginstatemanage-
简介:Thisarticlereviewsthebackgroundandproblemsintheteachingofintensivereading(IR)tothestudentswithnon-EnglishmajorsandproposessomeactivitiesforimprovingtheteachingandlearningprocessoftheIRclassroom.Itisexpectedthatwithsomeapplicableandeffectiveactivities,theteachercanhelpstudentsreadactivelyandgrowintoeffectiveandindependentreaders.
简介:Differentfrombirdsandinsects,batshavecomplexwing-deformationcapacitytogeneratehighaerodynamicforces.Inflight,theactivelymorphingofbatwingincludesthetwistingfromwingroottowingtip,thecamberingalongthechordwisedirection,thebendingalongthespanwisedirectionandthewingarea-changingcausedbythestretchandretractionofthewingspan.Itwasfoundthatthehighthrustandliftrequiredinbatflightaredependentonthewingtwistingandcamberingrespectively.Moreover,theintegratedwing-morphinggeneratestheaerodynamicliftandthrustmainlyduringthedownstrokeandalmostnegligibleforcesduringtheupstroke.Thewingarea-changingandbendingcanbeusedtoamplifythepositiveforcesinthedownstrokedurationandreducethenegativeforcesintheupstrokeduration.
简介:1.ApplicationProcedureof2010WorldFairOnMay2,2001,China,thefirstcountry,submittedformallyanapplicationforholding2010ShanghaiWorldFairtotheBureauofInternationalExhibition(BIE).TherewereChina,Russia,ROK,Poland,MexicoandArgentina(AfterwardsArgentinaWithdrew)formallysubmittingapplications.Thedeadlineforapplicationissixmonthsaftertheapplicationwasformallysubmittedbythefirstcountry.ThenBIEsentinvestigationdelegationtoinvestigatevariouscountriesthatmadeapplications,andsubmittedreportstotheExecutiveCommissionandGeneralAssembly.ChinastatedreportsatBIE129th,130thand131stGeneralAssembliesinJuneandNovember2001andJuly2002respectively.InDecember2002,ChinastatedthelastreportatBIE132ndGeneralAssembly.
简介:TheSouthwestUniversityofPoliticalScienceandLawisoneoftheearliesthigher-learninginstitutionsthatconductedhumanrightseducationandresearch,withalonghistoryandrichexperienceinhumanrightseducationandresearchandagreatnumberofprofessionals.Aftermanyyears’efforts,theHumanRightsEducationandResearchCenterattheuniversityhascultivatedanexcellentacademicteam,consistingoffour
简介:Eitherfromtheperspectiveofthefinitesupplycapacityofglobalresourcesandenergy,orfromtheperspectiveofglobalenvironmentrestrictiveconditions,developingcountriescannotrepeattheolddevelopmentroadofdevelopedcountries,eitherinviewoftheinternationalpressureChinaiscurrentlyfacing,orinviewofChina'sownresourcesendowmentandstagesofdevelopment,wemustactivelyfacesuchachallengeofclimatechange.Wemustrecognizethattheissueofclimatechangemaybeagreatrestrainttothepresentandfutureeco-socialdevelopment,andmayalsobeanimportantdrivingforceandnewopportunitytopushforwardthetransformationofdevelopmentpattern,totakeanewroadofindustrializationandtorealizesustainabledevelopment.Thisdemandsus,ontheonehand,totaketheScientificOutlookofDevelopmentastheguidetomakeeffortstocontroltheemissionofgreenhousegasesandcontinuouslyincreasethecapabilityofadaptingtoclimaticchange,andsetuptheoverallplantorespondtoclimatechangeofourcountry,andontheotherhand,weshouldunswervinglytaketheroadofsustainabledevelopment,saveenergy,optimizeenergystructureandstrengthenbiologicalprotectioninslowingandadaptingtoclimatechange.
简介:Wesystematicallyinvestigatedthetunabledynamiccharacteristicsofabroadbandsurfaceplasmonpolariton(SPP)waveonasilicon-gradedgratingstructureintherangeof10–40THzwiththeaidofsingle-layergraphene.ThetheoreticalandnumericalsimulatedresultsdemonstratethattheSPPsatdifferentfrequencieswithinabroadbandrangecanbetrappedatdifferentpositionsonthegraphenesurface,whichcanbeusedasabroadbandspectrometerandopticalswitch.Meanwhile,thegroupvelocityoftheSPPscanbemodulatedtobeseveralhundredtimessmallerthanlightvelocityinvacuum.Basedonthetheoreticalanalyses,wehavepredictedthetrappingpositionsandcorrespondinggroupvelocitiesoftheSPPwaveswithdifferentfrequencies.Byappropriatelytuningthegatevoltages,thetrappedSPPwavescanbereleasedtopropagatealongthesurfaceofgrapheneoroutofthegradedgratingzone.Thus,wehavealsoinvestigatedtheswitchingcharacteristicsoftheslowlightsystem,wheretheopticalswitchingcanbecontrolledasan'off'or'on'modebyactivelyadjustingthegatevoltage.Theslowlightsystemoffersadvantages,includingbroadbandoperation,ultracompactfootprint,andtunableabilitysimultaneously,whichholdsgreatpromiseforapplicationsinopticalswitches.
简介:Thesupercontinuum(SC)generationattherepetitionrateof10GHzispresented.TheSCisgeneratedina4.2kmconventionaldispersion-shiftedfiber(DSF),whichisproducedwithnonlineareffectsandgroupvelocitydispersion.TheDSFispumpedbyanactivelymode-lockedEr3+-dopedfiberlaserwithpulsewidthof7.97ps.AnovelSCpulsesourcewithabandwidthupto125nmisobtained,whichcoversthewholeC,LbandsandpartofSband.Thestable,narrowpulseswithmeanpulse-widthof9.7psandtime-bandwidthproductof0.48arefilteredoutacrossthewholeSCbandwidth.Thissupercontinuumpulsesourceissuitableforfuturehigh-speedopticalcommunications.
简介:TimedomainABCDmatrixformalismisausefulmodelforanalyzingthecharacteristicsofactivelymodelockedfiberlaser.Basedonthismodelandgivenmoreconsiderationontheinfluencesofopticalfiberdispersionandopticalfibernonlinearity,thelasercharacteristicofactivelymodelockedfiberlaserisanalyzed,andthecomparisionofthetheoreticalanalysisresultswithexperimentalonesisgiven.
简介:Awavelengthtunable,highrepetitionratemode-lockedfiberringlaserwasdemonstrated.Intheexperiment,photoniccrystalfiber(PCF)isusedasanintracavitycompressionmedium.ThehighnonlinearityandanomalousdispersionofPCFcancauseintracavitycompressionandresultinsignificantreductioninthepulsewidth.Thepulsesdurationattherepetitionrateof9.99GHzwaslessthan10psovertherangeof1532-1565nm.