简介：根据国家有关标准规定，凡更新地形图，都必须以新的图幅编号方法表示。而第一代地形图一律以旧式图幅编号方法表示为了方便新旧图号的互相检索，本文介绍了有关互换的数学模型，列举了互换例子，并据此编制了互换程序软件，可供各有关生产单位和组织生产部门参考使用

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简介：TheaimoftheInternationalWorkshopwastodiscussandpromotebetterapplicationsofgeoscientificinformationforurbanplanninganddevelopment,andencourageinternationalgeoenvironmentalcooperation.

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简介：ThestudywasmadebyobservingtheannualchangeofthegonadaldevelopmentofamphioxusinXiamencohtinuouslyfortwoyearsfromNovember,1986toNovember,1988.Wedeterminedthegonadaldiameter,gonadosomaticindexofeachamphioxus,andobservedthehistologicalcharacteristicofthegonadaldevelopmentofthefemaleandmalebycutsection,whichprovidedthebasisfordividingthestagesgonadsandthedetermininglevelofthegonadaldevelopmentofamphioxusineachmonth.

简介：Landresourcesarefacingcrisesofbeingmisused,especiallyforanintersectionareabetweentownandcountry,andlandcontrolhastobeenforced.Thispaperpresentsadevelopmentofdataminingmethodforlandcontrol.Avector-matchmethodfortheprerequisiteofdataminingi.e.,datacleaningisproposed,whichdealswithbothcharacterandnumericdataviavectorizingcharacter-stringandmatchingnumber.Aminimaldecisionalgorithmofroughsetisusedtodiscovertheknowledgehiddeninthedatawarehouse.Inordertomonitorlandusedynamicallyandaccurately,itissuggestedtosetupareal-timelandcontrolsystembasedonGPS,digitalphotogrammetryandonlinedatamining.Finally,themeansisappliedintheintersectionareabetweentownandcountryofWuhancity,andasetofknowledgeaboutlandcontrolisdiscovered.

简介：TheBohai,thelargestinlandseainChina,isabundantinmarineresources.However,withthepapereconomicgrowthintheCricum-BohaiBayAreaintherecentyears,theenvironmentalpollutioninthisareahasbecomemoreandmoreserious,resultinginasubstantialdeclineanddeteriorationofmarineresources.Inviewofthiscriticalsituation,themethodforsustainabledevelopmentofmarineresourcesintheBohaiSeaisdiscussed.Practicalmeasuresandfeasiblesuggestionsareputforwardinthispaperwiththepurposeofpreventingandcontrollingenvironmentalpollutionaswellasnaturaldisasters,andeventuallyachievingtheaimofthesustainabledevelopmentofmarineresourcesinthisarea.

简介：ＩｎｔｒｏｄｕｃｔｉｏｎＡｌｏｎｇｗｉｔｈｉｎｔｅｇｒａｔｅｄｒｅｇｉｏｎａｌｃｏｏｐｅｒａｔｉｏｎ，ｉｎｔｅｒｅｇｉｏｎａｌａｓｏｃｉａｔｉｏｎｈａｓｂｅｎｔｈｅｍａｉｎｐａｒｔｏｆｒｅｇｉｏｎａｌｅｃｏｎｏｍｉｃｄｅｖｅｌｏｐｍｅｎｔｉｎｓｏｍｅ...

简介：DevelopmentofChinaDigitalSeismologicalObservationalSystemsduring1996～2000andtheCapitalCircleAreaSeismographNetworkduring1999～2001areintroduced,andthestationdistributions,instrumentsused,maintasksofNationalDigitalSeismographNetwork,RegionalDigitalSeismographNetworkandPortableDigitalSeismographNetworkareintroducedchiefly.

简介：Usingmeteorologicaldataoffieldobservationin1990～2000,especiallypolarorbithighresolutionNOAAsatellitecloudmapsreceivedfromtheAntarcticexpeditionvesselsince1997,theformationanddevelopmentofthePrydzBaycyclonearestudiedinthispaper.Somenewviewpointsaresuggestedsuchas:whensurround-polarcycloneentersthePrydzBay,itcanalsointensifyanddevelopinsummer;cyclonecanalsodevelopintheeasterliesinthisbay.TheseviewpointsreviseolduncompleteviewpointthatthePrydzBayisaburialgroundofcyclone,andalsofurtherconsummateformation-developmenttheoryofsurround-cycloneintheAntarcticwesterliesandcycloneintheAntarcticeasterlies.Inthispaper,themechanismofice-air-seainteractioninthePrydzBayisstudied,andthephysicalprocessofcycloneformation-developmentisexplained.Byuseofwhollydynamictransportationmethod,anenergyexchangecaseofacyclone,whichexplosivelydevelopedafterenteringthePrydzBay,iscalculated.Intheopenwaterarea,momentumfluxis-2.205N/m2,sensibleheatfluxis486.69W/m2,andlatentheatfluxis261.84W/m2.ItislargerthanvaluesofwesterliesburstoverthePacific.Theheattransferredfromoceantoatmosphereinformofsensibleandlatentheatpromotescyclonedevelopmentrapidly.Inthiscasewindforcewasasstrongas12grade,with10minutesaveragewindspeedof38m/s,andinstantaneouswindspeedof100m/swhichbrokethewindspeedrecordof96m/sintheAntarctic(WendlerandKodama).

简介：Thesoundraytracingmethodcanachievehigheraccuracyindeterminingdepthsandplanpositionswithmultibeamechosoundingsystem.Indataprocessing,actualsoundspeedprofilemustbeusedinthemethod.However,themethodistoocomplicated.Inordertoovercometheshortcoming,thispaperpresentsanewmethod,thepositioncorrectionmethod.Twosituationsareconsideredinthenewmethod,namely,changeofsoundvelocitykeepsconstantgradientinwholewatercolumn(includingNlayers)orindifferentwaterlayer.

简介：Basedupontheformationandevolutionofoasisandthefactorsrestrictingthecoordinateddevelopmentofoasiseconomyandenvironment,thispaperpresentsagoalofthedevelopmentincoordination.Itsuggeststhatthesustainablesurvivalanddevelopmentofoasiscouldbeensuredonlyiftheoasis-desertandwatersourceecologyaremanagedinacombinedwaytoformamacrosystem.Inlightwiththeabovementioned,theapproachtothedevelopmentofeconomyandenvironmentofoasisinaridareashoulddependupontheestablishmentofanoasisecologicalandeconomicsystem,whichsuitsthearidenvironmentandpromotestheefficiencyofresourceconfiguration,stabilizeseconomicincrementandbenefitsecologicaldevelopment.

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简介：Ｏｎｔｈｅｂａｓｉｓｏｆｐｒｅｖｉｏｕｓｒｅｓｅａｒｃｈａｎｄｐｒａｃｔｉｃｅ，ａｎｅｗｍｏｄｅｌｓａｎｄＢＺＹｈａｓｂｅｅｎｓｕｃｃｅｓｓｆｕｌｌｙｄｅｖｅｌｏｐｅｄ．Ｅｘｐｅｒｉｍｅｎｔｓｈａｖｅｂｅｅｎｃａｒｒｉｅｄｏｕｔｏｎｉｔｓｐｒｏｐｅｒｔｉｅｓ，ｉｎｃｌｕｄｉｎｇｕｎｉｔｗｅｉｇｈｔ，ｉｎｉｔｉａｔｉｏｎｖｅｌｏｃｉｔｙ，ｓｅｔｔｌｉｎｇｖｅｌｏｃｉｔｙ，ｒｅｐｏｓｅａｎｇｌｅ，ｅｔｃ．ＴｈｅｅｘｐｅｒｉｍｅｎｔｓｓｈｏｗｔｈａｔｔｈｅＢＺＹｍｏｄｅｌｓａｎｄｈａｓｍａｎｙｍｅｒｉｔｓｏｖｅｒｏｔｈｅｒｓ，ｓｕｃｈａｓａｄｊｕｓｔａｂｌｅｕｎｉｔｗｅｉｇｈｔ，ｗｉｄｅｒａｎｇｅｏｆｐａｒｔｉｃｌｅｓｉｚｅ，ｐａｒｔｉｃｌｅｓｈａｐｅｓｉｍｉｌａｒｔｏｎａｔｕｒａｌｓａｎｄａｎｄｓｔａｂｌｅｐｈｙｓｉｃａｌａｎｄｃｈｅｍｉｃａｌｐｒｏｐｅｒｔｉｅｓ．Ｔｈｕｓｉｔｈａｓｈｉｇｈｖａｌｕｅｆｏｒｓｔｕｄｙ，ｄｅｖｅｌｏｐｍｅｎｔａｎｄｅｘｔｅｎｓｉｏｎｆｏｒａｐｐｌｉｃａｔｉｏｎ．Ｓｔｉｌｌｓｏｍｅｏｆｉｔｓｐｒｏｐｅｒｔｉｅｓｎｅｅｄｔｏｂｅｆｕｒｔｈｅｒｓｔｕｄｉｅｄ

简介：ＰｒｏｇｒｅｓｉｎＯｂｓｅｒｖａｔｉｏｎＴｅｃｈｎｉｑｕｅｓｏｆＧｅｏｓｃｉｅｎｃｅｓａｎｄＳｐａｃｅＳｃｉｅｎｃｅｓ——Ｃｏｎｇｒａｔｕｌａｔｉｏｎｏｎｔｈｅ８０ｔｈＢｉｒｔｈｄａｙｏｆＡｃａｄｅｍｉｃｉａｎＸｉｎ┐ＬｉｎｇＱＩＮｅｄｉｔｅｄｂｙＹ...

简介：高光谱影像包含有丰富的地物类别信息,但由于受分类方法等因素的限制,这些信息并不能得到充分的挖掘.组合分类器由于可以实现各分类结果信息的互补,因而总有着较各单分类器效果更好的分类性能.将组合分类方法引入到高光谱影像的分类实践中,并对组合的关键问题一组合规则进行探讨,提出了混合组合规则的概念.实验表明,利用该组合分类方法对高光谱影像进行分类,可以得到良好的处理结果.

简介：ThetheoreticalconditionsforthebenddevelopmentorattenuationhavebeenreviewedandtestedforastudyreachoftheMeghnariver.Thefieldobservationsinthenaturalalluvialmeanderdonotsupportthetheoriesdevelopedforbenddevelopment.Thelimitationsofthetheorytoapplyinthenaturalmeanderingriverarediscussed.

简介：1.Tcetonicandmagmaticactivizationproeesscs(tcetonicandthermalregenerationofancientbasc-mentordiwa)occurrcdinPhancrozoicanda1soil1Prccan1briantimc.Activizationrcgin1csbccamcap-parcntalrcadyinArchcantimcandthcirimportanccsignificantlyincrcascdduringLatcProtcrozoicpcri-odwhcnmanypartsofArchcancrustwcrc

简介：TheprocessesofCcnozolctectonic-magmaticactivatjonarodistrjbutedthroughoutthewholeterri-toryofthcEast-Manchzburianmcgaswcllwhichi8pcnctratedbyabyssalfracturcsofTan-LuSpetcm.Ncvcrtbc1css,thcriftingandit8rclatcdblockmovcmcntsandmagmatismwcrecharacteriscdbydiffcr-ont8ignsandintcnsitybothintimcandinspacc