简介：

简介：

简介：Yinshananticlineistheproductoftectono-dynamicdeformation-metamorphism.Alongtheaxisoftheanticlineexistsabrittle-ductileshearingzonewhichobviouslycontrolstheore-formation.Mineralizationoccursalongtheaxisoftheanticlineinawidthofabout1000m.Intheminingarea,volca-no-subvolcanicrocksofEarlyYanshanperiodaredividedintothreecycles:Iintermediateacidicdacitelavaanddaciteporphyry;Ⅱacidicamphibolelipariteandquartzporphyry;Ⅲintermediateandesiteporphyrite.AmongthemactivitiesofⅠandⅡcyclesaremoreintensiveandareintimatelyrelatedtothemineralization.Yinshanoredepositistheresultofcombinativeprocessesoftectono-dynamicandvolcano—magmatichydrothermalfluids,sothattherearetwocentersofmetallogeniczoning,onebeingtheaxialstrainzoneofYinshananticlinewhichisthecenteroffirstorder,andtheotherbeingporphyrystock,2ndorder.

简介：Asemi-implicitandEulerian-Lagrangianfinitedifferencemethodforthree-dimensionalshallowflowhasbeenextendedtoamorecompletesystemofequationsincorporatingsecond-momentturbulenceclosuremodelandtransportequationsofsalinityandtemperature.Thesimulationforfloodinganddryingofmudflatshasbeenimproved.ThemodelisappliedtoXiamenwaters.Basedonextensivesurveydata,waterlevelelevation,temperatureandsalinityfieldalongtheeasternopenboundaryandattheJiulongRiverinletsandrunoffsareanalyzed,specifiedandcalibrated.Thecomputedresultsshowgoodagreementwiththemeasureddata,reproduceflooding,emergenceoflargeandcomplexmudflatregion.

简介：ThecurrentGIScanonlydealwith2-Dor2.5-Dinformationontheearthsurface.Anew3-Ddatastructureanddatamodelneedtobedesignedforthe3-DGIS.Thispaperanalyzesdiverse3-Dspatialphenomenafromminetogeologyandtheircomplicatedrelations,andproposesseveralnewkindsofspatialobjectsincludingcross-section,columnbodyanddigitalsurfacemodeltorepresentsomespecialspatialphenomenaliketunnelsandirregularsurfacesofanorebody.Anintegrateddatastructureincludingvector,rasterandobject-orienteddatamodelsisusedtorepresentvarious3-Dspatialobjectsandtheirrelations.Theintegrateddatastructureandobject-orienteddatamodelcanbeusedasbasestodesignandrealizea3-Dgeographicinformationsystem.

简介：Thispaperpresentsthebasicconceptsandprinciples,datastructureandhighefficientspatialindexformulti-resolutionimagedatabase.Thedatabaseischaracterizedbyarrangementofmulti-resourceimagedataandseamlessmosaic,distribution-basedstorageandmanagement,integrationwithotherspatialdatabasesoftwaresuchasGeoStarandGeoGriddevelopedbyWuhanTechnicalUniversityofSurveyingandMapping.

简介：Adetailthree-dimensionalPwavevelocitystructureofBeijing,TianjinandTangshanarea(BTTarea)wasdeterminedbyinvertinglocalearthquakedata.Intotal16048Pwavefirstarrivaltimesfrom16048shallowandmid-depthcrustalearthquakes,whichoccurredinandaroundtheBTTareafrom1992to1999wereused.ThefirstarrivaltimesarerecordedbyNorthernChinaUnitedTelemetrySeismicNetworkandYanqing-HuailaiDigitalSeismicNetwork.Hypocentralparametersof1132earthquakeswithmagnitudeML=1.7~6.2andthethree-dimensionalPwavevelocitystructurewereobtainedsimultaneously.TheinversionresultrevealsthecomplicatedlateralheterogeneityofPwavevelocitystructurearoundBTTarea.Thetomographicimagesobtainedarealsofoundtoexplainotherseismologicalobservationswell.

简介：

简介：在这篇论文，一个转变模型说出SARC(有限制状况的静态过滤器的调整)被介绍，它在理论和试穿更实际、更严密任何旋转角参数。转变过程被划分成4步：①t他原版和目标坐标能与错误被认为是观察；②严密公式第一被推出以便由四个普通的点的使用计算转变参数的第一近似，转变方程被线性化；③由SARC模型④计算七个转变参数的最可能的值和变化表明SARC的有效性，一个例子被给。

简介：Inthispaperareviewoncurrentresearchon3DCMispresented,andanalternativeapproachbyintegratingtheconceptsandtechniquesofobject-orientedmethodandComputerAidedDesign(CAD)issuggested.Throughtheapproachurbanspatialentitiesasobjectsareextracted,whicharerepresentedwithprimary3Delements(node,edge,faceandbody)andtheircombinations.Inthelightoftheconceptofobject,themethodsupportsthemultiplerepresentationofLevelofDetails(LOD).Moreimportantly,topologicalrelationshipsbetweenobjectsaredescribedsothat3Dtopologicaloperationscanbeimplemented.

简介：

简介：Inthispaper,twoalgorithmsarepresentedforgeneratingtwocodescanlistsofanN-dimensionalHilbertcell,andaformalproofofthebackwardencodingalgorithmisgiven.Onthebasisoftheself-simi-laritypropertiesofaHilbertcurve,thispapergivesanovelalgorithmforgeneratingastaticevolvementruletablethroughanalyzingaHilbertcell.Bylookingupthestaticevolvementruletable,theN-dimensionalHilbertmappingsareefficientlyimplemented.

简介：多种的技术广泛地作为提高有用信号并且压制噪音干扰极大地增加信号到噪音比率(S/N)的一个方法在地震探索被使用。作者把它介绍给渗透地面的雷达(GPR)调查并且把试验性的结果比作常规介绍方法为GPR表明这种技术的可行性和优点探索。基于试验性的数据，作者总结GPR波浪繁殖规则和多种的获得的参数并且处理。是一次有用尝试充实GPR调查技术被证明。

简介：Thispaperpresentsadatafusionmethodindistributedmulti-sensorsystemincludingGPSandINSsensors'dataprocessing.First,aresidualχ2-teststrategywiththecorrespondingalgorithmisdesigned.Thenacoefficientmatricescalculationmethodoftheinformationsharingprincipleisderived.Finally,thefederatedKalmanfilterisusedtocombinetheseindependent,parallel,real-timedata.Apseudolite(PL)simulationexampleisgiven.

简介：Thispaperdevelopsawide-bandmulti-spectralspaceforcolorrepresentationwithAitkenPCAalgorithm.Thisnovelmathematicalspaceusingthebroad-bandspectramatchingmethodaimsatimprovingtheaccuracyofcolorrepresentationaswellasreducingcostsforprocessingandstoringmulti-spectralimages.Theresultsshowthatthespacecanpresentourexperimentaloriginalspectralspaces(i.e.MunsellcolormattandDIN-6164colorchips)withhighefficiency,andthatthespanningspacewiththreeeigenvectorscanpresenttheoriginalspaceatmorethan98%CSCR,andwhen5eigenvectorsareuseditcancoveralmostthewholeoriginalspaces.

简介：Multi-directionalirregularwavesaresimulatedonthebasisofthegivendirectionalspectrumusingadoublesummationmodel,asingledirectionperfrequencymodelandasinglesummationmodel.Theirresultsarecompared.Itisshownthatthesingledirectionperfrequencymodelproposedinthispapercangeneratearealisticwavefield.Theeffectsofthemodelparametersonthesimulatedresultsarealsostudiedinthispaperandcorrespondingsuggestionsaregiven.

简介：ＴｈｒｅＤｉｍｅｎｓｉｏｎａｌＭｏｄｅｌｉｎｇｏｆＥｆｅｃｔｏｆＩｎｄｉａ┐ＥｕｒａｓｉａＣｏｌｉｓｉｏｎ＊ＺｅｎｇＺｕｏｘｕｎＦａｃｕｌｔｙｏｆＥａｒｔｈＳｃｉｅｎｃｅｓ，ＣｈｉｎａＵｎｉｖｅｒｓｉｔｙｏｆＧｅｏｓｃｉｅｎｃｅｓ，Ｗｕｈａｎ４３００...

简介：Amulti-functionalsolarandskylightspectrophotometerhasbeendevelopedforthestudyofatmosphericconstituentsandaerosols.Theinstrumentanditsperformancearedescribed.Duetotelescopestructureandlock-inamplificationtechniqueadopted,thesensitivityoftheinstrumentishighenoughtoconductdirectsunmoonandtwilightmeasurementforseveralatmosphericspeciesandthedegreeofpolarizationandintensityobservationforskylight.Frommeasuredresults,thetotalcolumnabundanceofatmosphericspeciesandtheopticalcharacteristicsofaerosolcanberetrieved.Inthispaper,thedailyaveragedcolumnabundanceofO3measuredinBeijingbydirectsunwascomparedwithDobsonspectrophotometernearby.Thetwodidnotshowsignificantdifference.

简介：ＴＨＥＥＦＦＥＣＴＯＦＴＨＥＩＮＴＥＲＡＣＴＩＯＮＡＭＯＮＧＭＵＬＴＩ－ＳＣＡＬＥＳＹＳＴＥＭＳＡＮＤＴＨＥＡＳＹＭＭＥＴＲＩＣＤＹＮＡＭＩＣＡＮＤＴＨＥＲＭＯＤＹＮＡＭＩＣＳＴＲＵＣＴＵＲＥＯＦＴＲＯＰＩＣＡＬＣＹＣＬＯＮＥＯＮＩＴＳＴＲＡＣＫＸｕ...

简介：1.ＩｎｔｒｏｄｕｃｔｉｏｎＤｕｒｉｎｇｔｈｅｐａｓｔ15ｙｅａｒｓｔｈｅｃａｐａｂｉｌｉｔｙｔｏｍａｋｅｍｕｌｔｉ-λλｏｂｓｅｒｖａｔｉｏｎｓｏｆｔｈｅｍａｊｏｒｅｎｅｒｇｙｓｏｕｒｃｅｓｉｎｔｈｅｃｅｎｔｅｒｓｏｆＡｃｔｉｖｅＧａｌａｘｉｅｓｈａｓｓｕｐｐｌｉｅｄＡｓｔｒｏｐｈｙｓｉｃｓｗｉｔｈａｖｅｒｙｐｏｗｅｒｆｕｌｎｅｗｔｏｏｌｆｏｒｔｈｅｓｔｕｄｙｏｆｔｈｅｓｅｏｂｊｅｃｔｓ.ＭｏｓｔｏｆｔｈｅｓｅａｐｐｌｉｃａｔｉｏｎｓｈａｖｅｂｅｅｎｄｒｉｖｅｎｂｙｔｈｅｓｉｍｕｌｔａｎｅｏｕｓａｖａｉｌａｂｉｌｉｔｙｏｆＳｐａｃｅｍｉｓｓｉｏｎｓｉｎｔｈｅγ-ｒａｙ,Ｘ-ｒａｙ,ＵｌｔｒａｖｉｏｌｅｔａｎｄＩｎｆｒａｒｅｄｄｏｍａｉｎ.Ａｌｔｈｏｕｇｈｔｈｅｃｏｎｃｅｐｔｏｆｍｕｌｔｉ-λλｏｂｓｅｒｖａｔｉｏｎｓｈａｓｂｅｅｎｏｂｖｉｏｕｓｌｙａｒｏｕｎｄｆｏｒａｌｏｎｇｔｉｍｅ,ｔｈｅｒｅａｌｐｏｗｅｒｏｆｔｈｉｓｏｂｓｅｒｖａｔｉｏｎａｌｔｏｏｌｈａｓｎｏｔｂｅｅｎｆｕｌｌｙｒｅａｌｉｚｅｄｕｎｔｉｌｉｔｂｅｃａｍｅｃｌｅａｒｔｈａｔｍｏｓｔｏｂｊｅｃｔｓ(ａｌｓｏｏｆｃｏｓ...