学科分类
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68 个结果
  • 简介:GrowingevidenceindicatesthattheAsianmonsoonplaysanimportantroleinaffectingtheweatherandclimateoutsideofAsia.However,thisactiveroleofthemonsoonhasnotbeendemonstratedasthoroughlyashasthevariabilityofthemonsooncausedbyvariousimpactingfactorssuchasseasurfacetemperatureandlandsurface.ThisstudyinvestigatestherelationshipbetweentheAsianmonsoonandtheclimateanomaliesintheAsian-Pacific-American(APA)sector.Ahypothesisistestedthatthevariabilityoftheupper-troposphericSouthAsianhigh(SAH),whichiscloselyassociatedwiththeoverallheatingofthelarge-scaleAsianmonsoon,islinkedtochangesinthesubtropicalwesternPacifichigh(SWPH),themidPacifictrough,andtheMexicanhigh.ThechangesinthesecirculationsystemscausevariabilityinsurfacetemperatureandprecipitationintheAPAregion.AstrongerSAHisaccompaniedbyastrongerandmoreextensiveSWPH.TheenlargementoftheSWPHweakensthemid-Pacifictrough.Asaresult,thesouthernportionoftheMexicanhighbecomesstronger.Thesechangesareassociatedwithchangesinatmosphericteleconnections,precipitation,andsurfacetemperaturethroughouttheAPAregion.WhentheSAHisstronger,precipitationincreasesinsouthernAsia,decreasesoverthePacificOcean,andincreasesovertheCentralAmerica.PrecipitationalsoincreasesoverAustraliaandcentralAfricaanddecreasesintheMediterraneanregion.Whilethesignalsinsurfacetemperatureareweakoverthetropicallandportion,theyareapparentinthemidlatitudesandovertheeasternPacificOcean.

  • 标签: 南亚地区 气候变化 太平洋 季候风
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  • 简介:Inthispaper,thecharacteristicsofeasternAsianduststormareexaminedwithemphasisonthesatellitemeasurementsofaerosolopticalthickness.Thereflectivityofsolarradiationfromtheearth’satmospheredependsontheopticalthickness.Thesatellitemeasurementofradianceofsunlight,scatteredbytheearthanditsatmosphere,isusedtoderivethepropertiesofaerosolonoceanicsurfaces.Thispaperinvolvesthefollowing:(1)investigationofthemeasurementofduststormovertheoceanicsurfacebyGMSsatellite;(2)investigationofthemeasurementofduststormoverthelandsurfacebyground-basedinstrumentssuchasactinometer,lidar,etc.;(3)forcomparison,derivinganatmosphericaerosolsizedistributionovertheoceanicsurfaceofcalmweatherthroughmeasurementsofNOAAsatellite;and(4)theweatherprocessanditsmassloadofeasternAsianduststorm.

  • 标签: AEROSOL STORM AEROSOL OCEANIC weather instruments
  • 简介:NotesOntheTwelfthAsianGamesBystaffreporterCHAIRUIKANG''PhysicalculturedevlopsfasterinAsia,andatmostoftheOlympiceventsAsianath...

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  • 简介:GENERALTheAsianJournalofAndrologyistheofficialpublicationoftheAsianSocietyofAndrology,andissponsoredbytheShanghaiInstituteofMateriaMedica.ChineseAcademyofSciences.TheJournalhasbeenincludedin11internationalindexingsystems,includingBIOSIS,CABAbstracts,CABHealth,ChemicalAbstracts,CurrentContents/ClinicalMedicine,EMBASE,IndexMedicus,MEDLINE,PASCAL,ResearchAlert,andSCIExpanded.TheImpactFactoris1.302andtheJournalranksthirdamonginternationalandrologyjournals.TheJournalinvitesconcisereportsoforiginalresearchinallareasofandrology,bothexperimentalandclinical,includingmodern,traditionalandepidemiologicalstudies,fromanypartoftheworld.ReviewarticleswillbepublishedbyinvitationfromtheEditor-in-Chief,butmini-reviews(nomorethan4printedpages)basedprimarilyonauthors'ownresearchoninternationallyimportanttopicsareaccepted.Shortcommunicationsandletterstotheeditorarealsowelcome.Authorsarerequestedtosubmitacoveringletterindicatingthattheirmanuscriptrepresentsoriginalunpublishedmaterialthathasnotbeenandwillnotbepublishedelsewhere(ifaccepted).Thisrestrictiondoesnotapplytoresultspublishedasabstractsofcommunications,letterstotheeditororaspreliminaryreports.Bysubmittingamanuscripttheauthorswarrantthattheyhaveobtainedpermissiontouseanycopyrightedorpreviouslypublishedmaterial.Authorsmustdeclareanyfinancialsupportorrelationshipsthatmayposeconflictofinterest.Copyright

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  • 简介:Aim:TopresentapersonalaccountoftheinvolvementoftheWorldHealthOrganization(WHO)inthecollaborativedevelopmentinAsiaofthoseareasofandmlogyconcernedwithmalecontraceptionandreproductivehealth.Methods:TheandrologytrainingthroughworkshopsandinstitutionsupportundertakenbytheWHOHumanReproductionProgramme(HRP)andhowtheycontributedtothestrengtheningofaudrologyresearchinAsiaaresummadsed.Results:Theauthor'sexperienceandtheAsianscientificcontributionstotheglobalresearchinthefollowingareasarereviewed:thesafetyofvasectomyandthedevelopmentofnewmethodsofvasocclusion;gossypolanditsfailuretobecomeasafe,reversiblemaleantifeltilitydrug;Tripterygiumandwhetheritspuleextractswillpassypolthroughtheappropriatetoxicologyandphasedclinicalstudiestobecomeacceptablecontraceptivedrugs;hormonalmethodsofcontraceptionformen.Conclusion:TheWHOpolicyofresearchcapacitybuildingthroughtrainingandinstitutionstrengthening,togetherwiththecollaborationofAsianandrologists,hascreatedstrongNationalinstitutionsnowabletodirecttheirownprogrammesofresearchinclinicalandscientificandrology.(AsianJAndrol1999Jun;1:7-12)

  • 标签: 亚洲 男科学 血管吻合 雷公藤 荷尔蒙
  • 简介:I.Post-ColdWarSecuritySituationintheAsia-PacificAstheColdWarwitheredaway,thebi-polarconfrontationintheAsia-Pacificfinallycametoanend.Militaryconfrontation,thepreviousdominatingfac-torintheregion’sinternationalrelations,hasgivenplacetoeconomiccompetitionandcooperation.Forthatreason,countriesintheregionnowdisplayunprecedent-edinterestintheAsian-Pacificmulti-lateralsecuritydialogues(APMSD),hopingthattheymightcreateanenvironmentfavorabletotheireconomicdevelopment.Takingasawhole,theAsian-Pacificsecuritysituationhasbeenremarkably

  • 标签: cooperation favorable BILATERAL MILITARY Russia POLAR
  • 简介:Thecross-fertilizationbetweenartificialintelligenceandcomputationalfinancehasresultedinsomeofthemostactiveresearchareasinfinancialengineering.Onedirectionistheapplicationofmachinelearningtechniquestopricingfinancialproducts,whichiscertainlyoneofthemostcomplexissuesinfinance.Intheliterature,whentheinterestrate,themeanrateofreturnandthevolatilityoftheunderlyingassetfollowgeneralstochasticprocesses,theexactsolutionisusuallynotavailable.Inthispaper,weshallillustratehowgeneticalgorithms(GAs),asanumericalapproach,canbepotentiallyhelpfulindealingwithpricing.Inparticular,wetesttheperformanceofbasicgeneticalgorithmsbyusingittothedeterminationofpricesofAsianoptions,whoseexactsolutionsisknownfromBlack-Scholesoptionpricingtheory.Thesolutionsfoundbybasicgeneticalgorithmsarecomparedwiththeexactsolution,andtheperformanceofGAsisewluatedaccordingly.Basedontheseewluations,somelimitationsofGAsinoptionpricingareexaminedandpossibleextensionstofutureworksarealsoproposed.

  • 标签: 遗传算法 选择定价 金融学 机器学习
  • 简介:卢佩生EvolutionofAsianSummerMonsoonandtheSlowlyVaryingDisturbances¥LuPeisheng(InstituteofAtmosphericPhysics,ChineseAcademyofScie...

  • 标签: ASIAN SUMMER MONSOON Slowly VARYING disturbances
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  • 简介:Theobjectivesofthisresearchweretocharacterisetheclaymineralscompositionofsoil-deriveddustinNorthernChinaandtosetupamineralogicalsignaturetotracetheirorigin.MineralcompositionofaerosolparticleswasinvestigatedatAksu,Dunhuang,Yulin,TongliaoandChangwuduringanintensivefieldcampaignperiodofACE-Asia.Theresultsshowthatthekaolinite(K)tochlorite(C)ratioissensitivetotheregionaloriginofAsiandust.Westernsourceareas(representedbyAksu)displayedthelowestK/Cratioof0.3(average),whileitwasfoundtoincreaseupto0.70(average)uponmovingtowardsnorthernsourceareas(representedbyYulin).BystudyingtransporteddustinadepositionarearepresentativeoftheChineseLoessPlateau,theusefulnessoftheK/Cratio,whenassociatedwithbackair-masstrajectories,wasfoundtolieinrevealingtheoriginofthedust.ComparisonofthemineralogicaldatabetweenAsiandustandSaharadust,showsthattheK/Cratioisalsoaneffectivesignaturetoidentifythesourceareasonahemispherescale.

  • 标签: 粘土矿物 土壤灰尘 泥土率 来源分析 悬浮颗粒
  • 简介:WaterResourcesoftheSouthAsianRegioninaWarmerAtmosphere¥M.Lal(CentreforAtmosphericSciences,IndianInstituteofTechnology,NewDelh...

  • 标签: Global warming Climate change Regional impacts
  • 简介:在这篇论文,我们使用插件并且切基于的方法光谱在12亚洲人/美元的每日的汇率为长记忆性质测试的回归分析。结果根据插件方法证明与中国人民币的例外,所有系列可以有长记忆性质。在另一方面,结果基于Whittle方法证明那仅仅日本的日元和马来西亚ringgit可以有长记忆性质。它是著名的关于differencing参数的那推论,d,在在一个系列的结构的裂缝的存在必要可观的困难。因此,在亚洲给1997-1998的金融危机,为记忆性质的unravelling和在汇率系列的结构的裂缝的存在的进一步的测试被要求。

  • 标签: 汇兑行情 插入式方法 削成形方法 实验研究 记忆
  • 简介:RegionalinternationalcooperationinseismicdataexchangeandjointseismologicalanalysisintheAsian-Pacificregionsplaysanimportantroleinthereductionofearthquakedisastersintheseregionsaswellasthedevelopmentofglobalseismology.Basedontheup-to-datedevelopmentofnewtechnologyanddigitalbroadbandseismology,wediscussedtheAsianseismologicalCommission(ASC)Proposal"Asian-PacificSeismologicalDataCenter",Weappliedtheconceptofvirtualseismologicalnetwork(OttemoellerandHavskov,1999)totheproposedASCdataexchangeprogram.Basedonthedevelopmentofdigitalseismology,weintroducedaconceptof"modernearthquakecatalogues"whichincludenotonlylocationparametersandmagnitudesasintheconventionalearthquakecataloguesbutalsonewparametersofearthquakessuchasCMT,radiatedenergy,STF,andearthquakeruptureprocess,WerecommendedawebbasedregionalinternationaldataexchangeprogrambetweentheASCmemberswiththepurposeofformingavirtualAsian-Pacificseismologicalnetwork,andtheinterpretationandanalysisofbroadbanddigitalseismicwaveformsconductedatdistributed"datacenters".

  • 标签: 数字地震学 数据处理 地震遥测台网 地震观测