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简介：Inthispaper,weconductedaregressionanalysisoftheintensitydistributiondataof146earthquakes(M≥5.0)whichoccurredintheperiodfrom1900to2014.Accordingtopreviousresearch,Yunnanisdividedinto3tectonicregions.Thenweusethedataoftheisoseismiclinesinthese3regionstofittheintensity-attenuationmodelofeachregion.SincetherewereafewM≥7.0earthquakesinthis114-yearperiod,thefittedintensity-attenuationmodelofthestrongearthquakeswouldberandomoruncertain.Tosolvethisproblem,weintroducetheRuptureScalerelationshiptolimitingourfittedintensity-attenuationmodelofstrongearthquakes.Wechoosetheempiricalrelationshipofmagnitudeandrupture-scale,whichwasproposedbyLiZhonghuaandQinJiazheng,tocorrectthesizeoftheinfluencefieldestimatedthroughourintensity-attenuationmodel.Comparingourintensity-attenuationmodelswiththepreviousones,wefindthatinacertaintectonicregion,theintensityisoseismalsestimatedthroughourmodelhaveaverageminimumerrorwiththerealintensityisoseismaldecidedthroughfieldinvestigation.Therefore,itismoreadvisabletochoosethesmall-scalezonefortheintensity-attenuationevaluation

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简介：Climaticcharacteristicsoftropicalstratosphericmethanehavebeenwellresearchedusingvarioussatellitedata,andnumericalsimulationshavefurtherlyconductedusingchemicalclimaticmodels,whiletheimpactoftropica1stratosphericmethaneoxidationontropicaldistributionofwatervaporisnotpaidenoughattentioningeneralcirculationmodels.Parameterizationofmethaneoxidationistakenintoaccounttodealwiththechemicalmoisturizingactionduetothemethaneoxidationinthispaper.NumericalsimulationandanalysisoftheinfluenceofstratosphericmethaneonthepredictionoftropicalstratosphericmoistureandtemperaturefieldsusinggeneralcirculationmodelisconductedusingheavystormcasesincludingaheavyraininSouthChinaandatyphooncausedtropicalstorm.Theresultsshowobviousimpactofmethaneoxidationontheforecastingprecipitation.Itisdemonstratedthatthestratosphericwatervaporinthetropicissignificantlyremediedbyintroducingofparameterizationofmethaneoxidation.Andpredictionofstratospherictemperatureisaccordinglymodified,especiallyinthelowerstratospherewithin30°N.Theverificationofmonthlymeanofforecastanomalycorrelation(ACC)androotmeansquare(RMS)errorsoverthetropicsindicatedthattheimpactofstratosphericmethaneisneutralastotheforecastofgeopotentialheight,andpositivetotheforecastoftemperatureandwindsoverthetropics.

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简介：WaterramjetsusingouterwaterasanoxidizerhavebeendemonstratedasapotentialpropulsionmodeforunderwaterHighSpeedSupercavitatingVehicles(HSSVs)becauseoftheirhigherenergydensity,powerdensity,andspecificimpulse,butwaterfluxchangestheshapesofsupercavity.TouncoverthecavitatordragcharacteristicsandthesupercavityshapeofHSSVswithwaterinflowforramjets,supercavitationflowsaroundadiskcavitatorwithinletholearestudiedusingthehomogenousmodel.Bychangingthewaterinflowintherangeof0-10L/sthroughcavitatorshavingdifferentwaterinletareas,aseriesofnumericalsimulationsofsupercavitationflowswasperformed.Thewaterinflowfluxoframjetssignificantlyinfluencesthedragfeaturesofdiskcavitatorsandthesupercavityshape,butithaslittleinfluenceontheslenderratioofsupercavitaty.Furthermore,asthewaterinletareaincreases,thedragcoefficientofthecavitators'frontfacedecreases,butthisincreasedoesnotinfluencethediameterofthesupercavity'smaximumcrosssectionandthedragcoefficientoftheentirecavitatorsignificantly.Inaddition,withincreasingwaterfluxoftheramjet,boththedragcoefficientofcavitatorsandthemaximumdiameterofsupercavitiesdecreasestably.ThisresearchwillbehelpfulforlayoutoptimizationandsupercavitatyschemedesignofHSSVswithwaterinflowforramjets.

简介：Thermalstabilizationisanimportantprocessincarbonfibers＇production,duringwhichthepolyacryloni-trilefibersareheatedfrom180℃to280℃inair.Inthisstudy,thesampleswerecharacterizedbyX-raydiffraction,Fourierinfraredspectroscopy,differentialscanningcalorimetry,smallangleX-rayScattering（SAXS）andmechanicaltensiletests.Anewrulewassuggestedbytheresultsofstructuralcharacterizationforthecyclization,dehydrogena-tionandoxidationreactionsthatwereobservedtobedrasticfrom200℃to220℃,from220℃to250℃,andinthelaterperiodofthethermalstabilizationreactions,respectively.Thesizes,shapesanddistributionsofthesealedmicroporeswereobtainedfromtheSAXSdata.Thebreakingelongationwassignificantlyaffectedbythedrasticcyclizationanddehydrogenationreactions.Thebreakingforcewasaffectedconsiderablybythebiggermicropores,especiallyfrom220℃to250℃,owingtothedrasticdehydrogenationreactions.

简介：Onthesocialnetworkplatform,complaintsaboutthepublicpolicyformulationandimplementationissuesariselargely.Throughtheinformationaggregation,frequentinteraction,word-of-mouthandemotionalresonanceononlinesocialnetwork,theseinformationwillleadtotheoutbreakofthenetworkcomplaints.Itbringsdifficultiesandchallengesinpublicmanagement.Chinaisunderaperiodofsocialtransformation,andtherearevariousproblemsandcontradictions.Emergencycaneasilyarousegroupcomplaintsononlinenetwork,anditwillleadtonetworkpublicopinionthroughinducingsocialemotionalresonance,whichisharmfultosocialsecurityandstability.Thispaperhasbuilttheevaluationindexsystemfromfourdimensionswithcomplainttext’squality,transmissiontimeliness,userinteractiondegreeandemotionalresonanceexcitedbyemergency.Then,weestablishthedynamicinfluencemeasuremodelofonlinenetizenscomplaintthemebasedonanentropyweightmodel.ThemeasuremodelisprovedtobereasonableandeffectivebytheempiricalresearchofSinaWeibodata.Themodelcaneffectivelysolvethemeasureproblemofgroupcomplaintsinfluencewhentheemergenciesarousesocialemotionalresonance.Ithasimportanttheoreticalsignificanceandpracticalvalueforpublicpolicydecision-makeronlisteningtoonlinegroupcomplaints,understandingpublicopinion,andmakingpublicpolicy.

简介：这篇论文在东北中国和它的连接上探讨冬季空气温度的interannual变化到前面的欧亚的雪盖子。结果证明在东北中国上在10月欧亚的雪盖子和后面冬季的空气温度之间有重要否定关联。位于东方西伯利亚并且到湖贝加尔湖的东北的雪盖子在冬季空气温度异例起一个重要作用。更多(更少)在10月的东方西伯利亚雪能引起气压是更高的一个大气的发行量异例在模式(更低)比在极的区域的正常并且更低(更高)在北中间高度的纬度。由于到下列冬季的从10月的东方西伯利亚雪的坚持，冬季大气的异例是有利的(相反)到寒冷的普遍运动，空气向北中间高度的纬度从极的区域集中并且因此，降低(更高)在东北中国上的温度。同时，当10月雪盖子是更多(更少)时，在西北的太平洋的SST连续地更低(更高)总体上；然后，低的阿留申群岛之土人和东亚马槽被增强(变弱)，赞成更低(更高)在东北中国上的温度。

简介：Purpose:Theaimofthisstudywastoanalyzeandcomparetheeffectsofdifferentsports(swimming,football,basketball,andhandball)onfatmassandleanmassinprepubertalandpubertalgirls.Methods:Twohundredgirls(10.6±1.5yearsold,TannerstagesI–III)participatedinthestudyandweredividedinto5groups:40swimmers,40footballplayers,40basketballplayers,40handballplayers,and40controls.Fatandleanmassesatwholebody,arms,trunk,andlegsweremeasuredusingdual-energyX-rayabsorptiometry(DXA).PubertalstatuswasdeterminedusingTannertest.Effectsofdifferentsportsonfatandleanmasseswereassessedthroughanalysisofcovariancewithheightascovariates.Analyseswereperformedseparatelyin2groupsdependingontheTannerstage(prepubertalandpubertal).Results:Thegirlsofthecontrolgrouphadlessleanmassandmorefatmasscomparedtothegirlswhoplaysports(p<0.05).Thereweredifferencesinbodyfatbetweensports.Theswimmersandfootballplayershadlessbodyfat(p<0.05).Ontheotherhand,handballplayersshowedthehighestvaluesinleanmass(p<0.05).Conclusion:Impactsports(football,basketball,andhandball)andlow-impactsports(swimming)provideanappropriatedevelopmentofleanmassingrowinggirls.Wecanconcludethatpeoplepracticingsportsatearlyagesensurealowerfatmassandhigherleanmasscomparedtothosewhodonotpractice.Theseresultsmaybeusefulasapreventivemethodofadultobesity.

简介：ObjectiveThedistributionofrearrangedhopanesinhydrocarbonsourcerocksisinfluencedbythermalmaturityandoriginalsourceinput,andisalsocontrolledbydepositionalconditions.Throughcomparisonoflacustrineandcoal-bearingsourcerocks,thisworkattemptedtoanalyzethecompositionandoriginofrearrangedhopanesinhydrocarbonsourcerocks.Takenthesourcerocksfrom

简介：Thispapernumericallystudiestheinfluenceofthedownwardspoilerdeflectionontheboundarylayerflowofahigh-lifttwo-elementairfoilconsistingofadroopnose,amainwing,adownwarddeflectingspoilerandasingleslottedflap.Bothoftheboundarylayeroftheuppersurfaceofthespoilerandtheconfluentboundarylayeroftheuppersurfaceoftheflapbecomethicker,asthedownwardspoilerdeflectionincreases.Comparedtotheattachedflowattheangleofattackof10°,theflowoftheuppersurfaceofthespoilerbecomesseparatedattheangleofattackof16°whenthespoilerdeflectionislargeenough,whichcorrespondstotheboundarylayerflowreversalinvelocityprofiles.

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简介：Thisstudyinvestigatesthemigrationanddistributionofthewarm-temperatefishNibeaalbiflora.TheirspawningmigrationandwinteringmigratoryrouteswithinintheYellowSeaaredescribedindetail.ConsideringthemainphysicalfeaturesandenvironmentoftheYellowSea,itappearstobehaveonewinteringgroundandthreemigratoryroutesfromthewinteringgroundtothespawninggrounds.ThefishbegintomigratefromthewinteringgroundtothespawninggroundsinthenorthwestregionoftheYellowSeainlateMarch.TheYellowSeahasthreespawninggrounds.ThefirstislocatedneartheYaluRiverontheLiaodongPeninsulaandthesecondoneislocatedinRushanBayofShandongPeninsula.ThethirdspawninggroundislocatedinHaizhouBayinthesouthernregionoftheYellowSea.ThisstudyfoundthatthetemperatureoftheYellowSeainfluencesthemigrationofN.albiflora,andthatthemigratoryroutescoincidewiththethermalfrontsinthesea.Nutrientsforjuvenilefisharetakenfromthecoastalupwellingarea.Chlorophyllisagoodenvironmentalindicatorofphytoplanktonbiomassandtherebyprovidesthestatusofbiologicalresources.Differenttypesofsedimentinnear-shorezonesarealsoofpracticalsignificanceforthegrowthoffish.Thestudyoftheeffectsofmarineenvironmentsonthemigrationofvariousfishesisnotonlysignificanttothefishingindustry,butcanalsoprovideascientificbasisfortheunderstandingoftheecologicalimplicationsoftherelevantphysicalprocesses.

简介：Inthispaper,weanalyzethe180stockswhichhavethepotentialinfluenceontheShanghaiStockExchange(SSE).First,weusethestockclosingpricesfromJanuary1,2005toJune19,2015tocalculatelogarithmicthecorrelationcoefficientandthenbuildthestockmarketmodelbythresholdmethod.Secondly,accordingtodifferentnetworksunderdifferentthresholds,wefindoutthepotentialinfluencestocksonthebasisoflocalstructuralcentrality.Finally,bycomparingtheaccuracyofsimilarityindexofthelocalinformationandpathinthelinkpredictionmethod,wedemonstratethattherearebestsimilarityindextopredicttheprobabilityfornodesconnectioninthedifferentstocknetworks.

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简介：Representingtheappealsofitsindustry,thehigh-techinterestgrouphasrecentlybecomeanemergingpoliticalforceintheUnitedStates.Withabundantfinancialresourcesandproficiencyinpoliticalcommunication,thegrouprapidlygrowstobeasignificantforceintheAmericanpoliticalsphere.IthasstartedtoaffecttheinternalandforeignaffairsoftheU.S.andplayedaproactiveroleinthelatestpresidentialelection.Sincethehigh-techinterestgrouphasalreadybecomeandwillcontinuetobeabigplayerinSino-U.S.relations,Chinashouldcarefullydealwithitsappealsandconflictofinterests,andtrytodevelopthisgroupintoastabilizerbetweenthetwocountries.

简介：Background:Understoryplantsrepresentsthelargestcomponentofbiodiversityinmostforestecosystemsandplaysakeyroleinforestfunctioning.Despitetheirimportance,theinfluenceofoverstory-layercompositiononunderstoryplantdiversityisrelativelypoorlyunderstoodwithindeciduous-evergreenbroadleavedmixedforests.Theaimofthisworkwastoevaluatehowtreeoverstory-layercompositioninfluencesonunderstory-layerdiversityinthreeforesttypes(monospecificdeciduousNothofaguspumilio(Np),monospecificevergreenNothofagusbetuloides(Nb),andmixedN.pumilio-N.betuloides(M)forests),comparingalsobetweentwogeographicallocations(coastandmountain)toestimatedifferencesatlandscapelevel.Results:Werecorded46plantspecies:4ferns,12monocots,and30dicots.Canopy-layercompositioninfluencestheherb-layerstructureanddiversityintwodifferentways:whilemixedforestshavegreatersimilaritytoevergreenforestsintheunderstorystructuralfeatures,deciduousandmixedweresimilarintermsofthespecificcompositionofplantassemblage.Deciduouspurestandswerethemostdiverse,meanwhileevergreenstandswereleastdiverse.Lackofexclusivespeciesofmixedforestcouldrepresentatransitionwhereevergreenanddeciduouscommunitiesmeetandintegrate.Moreover,landscapehasamajorinfluenceonthestructure,diversityandrichnessofunderstoryvegetationofpureandmixedforestslikelyassociatedtothemagnitudeandfrequencyofnaturaldisturbances,wheremountainforestnotonlyhadhighestherb-layerdiversitybutalsomoreexclusivespecies.Conclusions:OurstudysuggeststhatmixedNothofagusforestsupportscoexistenceofbothpuredeciduousandpureevergreenunderstoryplantspeciesanddifferentassemblagesincoastalandmountainsites.Maintainingthemixtureofcanopypatchtypeswithinmixedstandswillbeimportantforconservingthenaturalpatternsofunderstoryplantcompositioninsouthernbeechmixedforests.