简介:IntegratedwithGISandremotesensing(RS)technology,asystematicanalysisanditsmethodologyforhuman-settlementssocialenvironmenthasbeenintroduced.Thismethodologyhasbeencalledspatialtrendfieldmodel(STFM).STFM'sapplicationhistoryinthefieldofhuman-settlementssocialenvironmenthasbeendiscussedatfirst.Then,someindexdatamodelshavebeencreatedthroughSTFM,whichincludepopulationdensitytrendfield,humanactivitystrengthtrendfield,city-townspatialdensitytrendfield,urbanizationratiotrendfield,roaddensitytrendfield,GDPspatialdensitytrendfieldandPER-GDPspatialdensitytrendfield.Withallabove-mentionedindexesasinputdata,throughIterativeSelf-OrganizingDataAnalysisTechniquesAlgorithm(ISODATA),thispapermakesaverificationstudyofChongqingmunicipality.TheresultofthecasestudyconfirmsthatSTFMmethodologyiscredibleandhashighefficiencyforregionalhuman-settlementsstudy.
简介:Inthisstudy,weexaminealong-termincreasingtrendinsubtropicalpotentialvorticity(PV)intrusioneventsoverthePacificOceaninrelationtotheglobalmeantemperaturerise,basedonmultiplereanalysisdatasets.ThefrequencyofthePVintrusionsiscloselyrelatedtotheupper-troposphericequatorialwesterlyductandthesubtropicaljet(STJ).AnoverallstrengtheningofthewesterlyductandweakeningoftheSTJarefoundtobedrivenbythewarming-inducedstrengtheningofWalkercirculationandregionalchangesinHadleycirculationonmulti-decadaltimescale,leadingtoanincreaseinthePVintrusionfrequencyoverthetropics.Theresultsarerobustinalldatasets.Themulti-decadalstrengtheninginthePacificWalkercirculationisconsistentwiththeglobalmeantemperaturerise.Inthisway,thePVintrusionsarecorrelatedwiththewarmingrelatedglobalmeantemperuaterise.WhentheinterannualvariabilityofENSOisremovedfromtheintrusiontimeseries,thelong-termtrendinPVintrusionsduetoexternalforcingassociatedwithanthropogenicwarming(globalmeantemperaturerise)becomesclearer.Thelinkbetweentheglobalmeantemperatureriseandintrusionfrequencyisfurtherverifiedbyperformingacorrelationanalysisbetweenthetwo.Thesignificant(>95%)correlationcoefficientis0.85,0.94,0.84,0.83,and0.84forERA-40,ERA-Interim,NCEP-NCAR,JRA-55,andJRA-25,respectively.Thisunequivocallyindicatesthattheglobalmeantemperaturerisecanexplainaround69%–88%ofthevariancerelatedtothelong-termincreaseinPVintrusionfrequencyoverthePacificOcean.
简介:基于三个全球年度吝啬的表面温度时间系列和三个中国年度平均数表面空气温度时间系列,多重timescales上的气候变化趋势被使用多滑动的时间窗户的趋势评价方法分析。结果被用来在1998-2012期间讨论所谓的全球温暖的中断。不同开始和结束时间在趋势评价的结果上有明显的效果,这被表明,并且当使用一扇短窗户时,含意特别地大。全球温暖的中断在1998-2012期间是在短timescales上看温度系列的结果;并且类似于它的事件,或有甚至冷的趋势的事件,实际上历史上多次发生了。因此,全球温暖的中断是可能的是长期的温度变化的一个期刊特征。它主要在短学期反映温度,和如此的现象的十的可变性不从长远的观点看改变全面温暖趋势。
简介:AsocialistlegalsystemwithdistinctChinesefeatureshastakenshapein2010asrequiredbythegeneralobjectiveofthe"ruleoflaw"strategyandlegislationworkputforwardbytheParty’s15thnationalcongress.Uptothepresent,Chinahasalreadymade237laws,includingtheConstitution,699administrativedecreesandregulationsandmorethan8,600locallawsandregulations.1Theycoversevenlegalregimes,threetiersoflaws.Lawsconcerninghumanrightsareanimportantcomponent
简介:AnapproachisproposedforpredictingturningandaccelerationmotiontrendofthetropicalcyclonesovertheSouthChinaSeafor72hintheextrapolatedtrackcoordinates.Cross-track(CT)andalong-track(AT)componentsaredefinedaccordingtothepersistentlyextrapolatedtrackcoodinatesbasedonobservedpositionsattheinitialandpast24htimes.Akindofstraight-forwardmeasuremaybeprovidedwithCTandATcomponentsfortyphoonturningmotionandac-celerationmotion.Canonicalcorrelationanalysis(CCA)isperformedtorevealthecorrelaotionsbe-tweentropicalcyclonetracksandenvironmental500hPageopotentialheightfields.Astepwisedis-criminateanalysistechniqueisadoptedtoderivetheclassificationfunctionsoftherespectivethreecategoriesforATandCTcomponents.Especially,categoricalcombinationsofCTandATcompo-nentsaredividedintopossible9regionscorrespondingwithtropicalcyclonebehaviors.Notonlycan9motiontrendsofatropicalcyclonebepredicted,butalsothelocationanditsmaximumerroratleastincertaindirectionareavailable.Theperfectprediction(PP)verificationsindicatethatthepercentcorrectsfortheCTandATcategoriesare67%and69%intheindependentsamples,73%and53%inthedependentsamples,respectively,higherthanthatof33.3%forrandomchance;moreover,therateforsuccessfullyforecastingthatinwhichoneofthenineregionsthetropicalcy-cloneswillfallat72hisabout40%,alsohigherthanthestochasticprobabilityof11%.Themethodhasbeenprovedtobeskillfulandpromising.
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简介:<正>The10thNortheastAsiaYouthForum,withthethemeofChina-ROK-JapanYouthEmploymentGuidance,sponsoredbyMoralRe-Armament/InitiativesofChange(MRA/IC)-KoreawasheldinSeoulandCheonanfromAugust12to17.Seventyfivecollegestudentsfrom37universitiessentbyChinaInternationalYouthExchangeCenter,MoralRe-Armament/InitiativesofChange(MRA/IC)-KoreaandJapanSocietyattendedtheForum.LeeBoksil,Vice-MinisterofMinistryofGender
简介:Researchingthedynamicdistributioncharacteristicsandtrendevolutionofagriculturalcarbonemissionsisofconsiderablesignificanceinformulatinganeffectiveagriculturalcarbonreductionpolicy.Basedonmeasurementofagriculturalcarbonemissionsof31provincesovertheperiod2002-2011,thestudyobservedregionaldifferencesandthedynamicevolutionofdistributionofagriculturalcarbonemissionsusingagriculturalcarbonintensityastheindicator,accompaniedbyGinicoefficientsandthekerneldensityestimationmethod.TheresultsdemonstratefirstthatagriculturalcarbonemissionsforChinashowanobviousnonequilibriumnatureinregardtospatialdistribution.Accordingtothedifferencesinagriculturalcarbonemissionsdynamictrends,wedividedthe31regionsintofourtypes-continuousdecline,fluctuatingdecline,continuousincrease,andfluctuatingincrease.Further,agriculturalcarbonemissionsintensityshowedadownwardtrendwithsignificantdifferencesintheresearchareas.Second,thegapinspatialdistributionofnationalagriculturalcarbonemissionsisgraduallyexpandingbasedontheresultscalculatedbyGinicoefficient.Fromtheperceptionofregionaldifferencesinagriculturalcarbonemissions,theeasternregionshowedanaveragelevel,thegapwasmoreobviousinthecentralregion,whilewesternregionshowedatrendoffluctuatingdownward.Third,accordingtoestimationbykerneldensity,theregionaldisparityinagriculturalcarbonemissionshadadownward,butlimited,trend.Inregardtoagriculturalcarbonemissionsoverthethreeareas,theregionalgapnotonlytendedtodecreasebutalsoshoweda"fourway"differentiationphenomenonintheeasternregion.Thedifferenceinthecentralregiondifferencewasnarrower.Onthewhole,thegapforthewesternregionreducedsteadilyoverasmallrange.
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