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

简介：针对传统分类方法精度不高、感兴趣目标分类不理想等缺陷，采用多特征组合的支持向量机影像分类方法，利用颜色矩、颜色集和灰度共生矩阵进行特征提取，总体精度、Kappa系数和混淆矩阵作为评价指标对单一特征、组合特征的不同分类结果进行分析。实验结果表明，该方法有效地解决了单数据源分类不完整、精度低等问题，对高维输入向量具有较高的推广力。

简介：2012年7.21特大暴雨期间,香山街道公主坟15号院边坡出现垮塌并造成了破坏,边坡亟需治理。本文介绍了该边坡的基本特征,分析了边坡的变形情况及影响因素并确定了边坡的破坏模式,并选用瑞典圆弧法评价了边坡的稳定性。根据边坡的实际情况,选择了适于土质边坡防治的新型支挡加固措施一格构锚固工程,并辅以挡土墙工程及绿化工程,作为边坡治理的工程措施。

简介：这篇论文论述一个新算法由改变形式的参数在结构预言损坏的地点和严厉。损坏察觉的一个存在算法被考察，新算法被提出改进损坏由在存在算法消除乖僻的假设和限制定位和严厉评价的精确性。当适用于为哪个预先损坏的two-dimensionalframe结构时，损坏预言精确性数字地为每个算法被估计，损坏以后的形式的参数为仅仅颤动的一些模式是可得到的。当时，分析结果说明新算法的改进精确性与存在算法相比。

简介：这份报纸证明一个环形的模式能从北方大西洋摆动(NAO)和Pacific/North美国人(PNA)的联合被构造模式。伪环状，南方的偶极子和构造环形的模式的垂直barotropy大西洋摆动(AO)模式类似于那些。它也以变化贡献是一个主导的模式。而且，它与AO的时间的关联是相当强壮的。这个新环形的模式优于AO因为它合并PNA的大部分并且做行动的中心在和平更强壮、比AO的更身体上相关。或，更通常，它可以被认为是不同于AO的一个物理模式。这研究的结果也显示NAO-PNA观点包含大多数AO的信息，而AO观点仅仅关于NAO-PNA的信息的一半包含。因而，NAO-PNA观点被作者考虑比AO的更全面。

简介：设计了基于资源三号卫星融合影像修测1∶5万地形图的方案。根据方案首先对试验区资源三号卫星影像进行正射纠正、影像融合等影像处理，然后将软件Mapstore用于资源三号卫星融合影像进行地形图修测，经过遥感影像目视解译、人机交互操作、后期编辑等处理，完成了1∶5万矢量地形图修测。试验结果表明，修测设计方案合理，资源三号卫星融合影像修测地图精度能达到国家成图规范要求，可用于1∶5万地形图修测。

简介：在北方亚洲气旋(NAC)之间的关系活动和南部的环形的模式(SAM)在这研究被记录。NAC索引(NACI)的定义在诺思亚洲基于大气的相对涡度。分析产出在以前的冬季之间的重要积极关联南部的环形的模式索引(SAMI)和春天NACI在内部年度可变性，与0.51的一个关联系数在期间19482000。NAC相关、SAM相关的大气的一般发行量可变性的分析表明如此的一种关系。学习进一步表明当冬季SAM变得强壮时，在热带西方的太平洋的大气的传送对流将加强的春季和本地哈德利发行量将被加强。作为结果，在华南上的反常减退运动使温度坡度在底层加强了并且在高水平加强喷气，哪个对NAC的发展有益活动。

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简介：Inthispaperthe0-1combinedBEMisadoptedtosubdividethecomputationaldomainboundary,andtodiscretizetheGreen’sintegralexpressionbasedonLaplaceequation.TheFEMisusedtosubdividethewavesurfaceanddeducethesurfaceequationwhichsatisfiesthenonlinearboundaryconditionsonthesurface.TheequationswithpotentialfunctionandwavesurfaceheightasanunknownquantitybyapplicationofTaylorexpansionapproachcanbesolvedbyiterationwithinthetimestep.Inm-timeiterationwithinthecomputationalprocessoftimestep(n-1)ΔttonΔt,theresultsofthepreviousiterationaretakenastheinitialvalueofthetwo-orderunknowntermsinthepresentiteration.Thus,animprovedtrackingmodeofnonlinearwavesurfaceisestablished,andnumericalresultsofwavetanktestindicatethatthismodeisimprovedobviouslyandismoreprecisethanthepreviousnumericalmodelwhichignoredthetwo-orderunknowntermsofwavesurfacelocationandvelocitypotentialfunctionincomparisonwiththetheoreticalvalues.

简介：Oceanicgeneralcirculationmodelshavebecomeanimportanttoolforthestudyofmarinestatusandchange.ThispaperreportsanumericalsimulationcarriedoutusingLICOM2.0andtheforcingfieldfromCORE.WhencomparedwithSODAreanalysisdataandERSST.v3bdata,thepatternsandvariabilityofthetropicalPacific–IndianOceanassociatedmode(PIOAM)arereproducedverywellinthisexperiment.Thisindicatesthat,whenthetropicalcentral–westernIndianOceanandcentral–easternPacificareabnormallywarmer/colder,thetropicaleasternIndianOceanandwesternPacificarecorrespondinglycolder/warmer.ThisfurtherconfirmsthatthetropicalPIOAMisanimportantmodethatisnotonlysignificantintheSSTanomalyfield,butalsomoreobviouslyinthesubsurfaceoceantemperatureanomalyfield.Thesurfaceassociatedmodeindex(SAMI)andthethermocline(i.e.,subsurface)associatedmodeindex(TAMI)calculatedusingthemodeloutputdataarebothconsistentwiththevaluesoftheseindicesderivedfromobservationandreanalysisdata.However,themodelSAMIandTAMIaremorecloselyandsynchronouslyrelatedtoeachother.

简介：这份报纸建议我们叫作鈥渟egregated预言鈥?预言是nonstationary的气候时间系列的一条新途径。这条途径基于实验模式分解方法(EMD)，它能分解一时间信号进基本摆动的部件的一个有限、通常小的数字。到这的能力接近的测试，一些预言实验为几个气候时间系列被执行。试验性的结果证明这条途径能分解气候时间系列的nonstationarity并且分离在不同模式部件之间的非线性的相互作用，它从而能改进这些原来的气候时间系列的预言精确性。关键词EMD-nonstationarity-非线性的系统-气候预言-时间系列预言

简介：TheIndianOcean(IO)seasurfacetemperature(SST)wasanalyzedbyusingempiricalorthogonalfunction(EOF),andtheleadingmodeofIndianOcean(LMIO)SSTwasextracted.ThemajorspatialandtemporalcharactersofLMIOwerediscussed,andtherelationshipsbetweenLMIOwithIndiansummermonsoon(ISM)andwithChinasummerrainfalls(CSR)wereinvestigated,thentheimpactsofLMIOonAsiansummermonsoon(ASM)circulationwereexplored.Somenotableresultsareobtained:ThesignificantevolutionalcharactersofLMIOaretheconsistentwarmingtrendofalmostthewholeIObasin,thedistinctivequasi-3-andquasi-11-yroscillationsandremarkablyinterdecadalwarmingin1976/1977and1997/1998,respectively.TheLMIOimpairedthelowerlevelcirculationofISMandwascloselyrelatedwiththeclimatetrendofCSR.ItwasassociatedwiththeweakeningofSouthAsianhigh,theeasterlywindssouthoftheTibetanPlateau,andthecross-equatorialflowsover10°-20°N,40°-110°Eattheupperlevel;withthestrengtheningofSomalicross-equatorialjetbuttheweakeningofthecirculationofISMinthesectorofIndia,thestrengtheningofsouthwindoverthemiddleandlowerreachesofYangtzeRiverandSouthChinabuttheweakeningofsouthwesterlywindsoverNorthChinaatlowerlevelandwiththeincreasingofsurfacepressureovertheAsianContinent.ChangesinthemoisturefluxtransportsintegratedverticallyoverthewholetroposphereassociatedwithLMIOaresimilartothoseinthelowerlevelcirculation.Tosumup,thesignificantSSTincreasingtrendofIObasinwasoneoftheimportantcausesforweakeningoftheASMcirculationandthesouthwardsshiftingofChinasummerrainband.

简介：Themultivariatestatisticalanalysisisprofitablyapplicabletothestudyofconodontmultielementtaxonomy.R-modeclusteranalysesofquantitativeand0-1dataarecarriedoutheretoclassifymorethan6000discreteLowerTriassicconodontspecimensbelongingto108kindsofconodontelementsfromWesternGuangxi.TheresultsofR—modeclusteranalysisrevealmoredirectlytherelationshipamongmanyisolatedconodontelements,andtheyalsoprovethatthere-sultsofthelogicalinferencearebasicallycorrect,i.e.108kindsofconodontelementscanbeidenti-fiedinto32speciesbelongingto11generaofconodonts.TheapplicationofR-modeclusteranalysismultielementtaxonomybythemethod,hasbroughtabout4significantconclusions,whichcanbeusedbyconodontresearchersasreference.

简介：在南方印度洋的年度subduction率被分析数据吸收(苏打)在19502008的时期输出的简单海洋计算。为潜在的密度班的subduction率普查在南方印度洋副热带的旋回的西南的部分显示出相应于印度洋副热带的模式水(IOSTMW)的一座山峰。混合层深度越深，在现在的气候学的混合层前面和联系相对更快的发行量越sharper导致了更大的侧面的正式就职，它首先dominantsIOSTMWsubduction率，当时与从垂直的抽的仅仅次要的贡献。没有概论的损失，通过在最小的垂直温度坡度(LMVTG)的层的水特征的小心的分析，作者建议IOSTMW作为thermostad被识别，与低潜在的涡度的侧面的最小(PV，吗不到200湯漠?敌????猯'T￣牯嘠污猼扵?????汁?桴獥??晲捡楴獮栠摡猠杩楮楦慣瑮愠瑣癩瑩?湡?瑳'L汩瑩?景攠畭獬晩捩瑡潩?湵敤?慶楲畯???牦浯??琠?㈱??琠浥数慲畴敲爠湡敧?牦浯㈠‰潴ㄠ?讬鶝??顟????醰??????颮鑈？？

简介：ToretrievewindfieldfromSARimages,thedevelopmentforsurfacewindfieldretrievalfromSARimagesbasedontheimprovementofnewinversionmodelispresent.GeophysicalModelFunctions(GMFs)havebeenwidelyappliedforwindfieldretrievalfromSARimages.AmongthemCMOD4hasagoodperformanceunderlowandmoderatewindconditions.AlthoughCMOD5isdevelopedrecentlywithamorefundamentalbasis,ithasambiguityofwindspeedandashapegradientofnormalizedradarcrosssectionunderlowwindspeedcondition.ThisstudyproposesamethodofwindfieldretrievalfromSARimagebycombiningCMOD5andCMOD4FiveVV-polarisationRADARSAT2SARimagesareimplementedforvalidationandtheretrievalresultsbyacombinationmethod(CMOD5andCMOD4)togetherwithCMOD4GMFarecomparedwithQuikSCATwinddata.Theroot-mean-squareerror(RMSE)ofwindspeedis0.75ms-1withcorrelationcoefficient0.84usingthecombinationmethodandtheRMSEofwindspeedis1.01ms-1withcorrelationcoefficient0.72usingCMOD4GMFaloneforthosecases.TheproposedmethodcanbeappliedtoSARimageforavoidingtheinternaldefectinCMOD5underlowwindspeedcondition.

简介：Applyingtheempiricalorthogonalfunction(EOF)analysistotheseasurfacetemperature(SST)fieldofthetropicalPacificandIndianOceansfordeterminationofthefirsteigenvectorfield,thecurrentworkrevealsthattherearesignificantzonalgradientsofSSTinallseasonsoftheyearinthenorthwesternandeasternIndianOceanandequatorialcentralandeasternPacificandwesternPacific.ItisalsofoundthatthevariancecontributionratesofthefirstEOFmodeofeveryseasonismorethan33%.ThisshowsthatthiskindofspatialdistributionoftheSSTisstable.ThispatternisnamedPacific-IndianOceansSSTAmode.Throughcarefulanalysisandcomparison,anindexofthemodewasdefined.

简介：Weanalyzethedecadalvariationofthestratospheretropospherecoupledsystemaroundtheyear2000byusingtheNCEPreanalysis-2data.Specifically,therelationshipbetweentheNorthernHemisphereAnnularMode(NAM)andthetroposphericEastAsiantroughisinvestigatedinordertofindtheeffectivestratosphericsignalsduringcoldairoutbreaksinChina.Statisticalanalysesanddynamicdiagnosesbothindicatethatafter2000,increasedstratosphericpolarvortexdisturbancesoccurandtheNAMismainlyinnegativephase.Thetroposphericpolarareasaredirectlyaffectedbythepolarvortex,andinthemidlatitudes,theUralblockinghighandEastAsiantrougharemoreactive,whichleadtoenhancedcoldairactivitiesineasternandnorthernChina.Furtherinvestigationrevealsthatunderthiscirculationpattern,downwardpropagationsofnegativeNAMindexarecloselyrelatedtotheintensityvariationoftheEastAsiantrough.WhennegativeNAManomaliespropagatedowntotheuppertroposphereandreachacertainintensity(standardizedNAMindexlessthan1),theyresultinapparentreinforcementoftheEastAsiantrough,whichreachesitsmaximumintensityaboutoneweeklater.Thenortherlywindbehindthetroughtransportscoldairsouthwardandeastward,andtherangeofinfluenceandtheintensityarecloselyassociatedwiththetroughlocation.Therefore,theNAMindexcanbeusedasameasureofthesignalsfromthedisturbedstratospheretogivesomeindicationofcoldairactivitiesinChina.

简介：Anoptimalactiveslidingmodecontrollerwithspecifieddecayratedesignisproposedtocontrolthewave-inducedoffshorejacket-typeplatformwithactivemassdamper(AMD).IrregularwaveloadingisapproximatedbyfinitesumsofFourierseries,anditsdynamiccharacteristicsaregovernedbyanexosystemderivedfromthelinearizedMorisonequation.Theoffshoreplatformsystemisfirstdecomposedintotwovirtualsubsystemsbasedonalineartransformation.ByconsideringthevelocityofAMDasavirtualcontrolforceforthefirstsubsystem,theoptimalvirtualcontrollerisderived.Furthermore,anoptimalslidingmodesurfacewithspecifieddecayrateisproposed.Then,theactiveslidingmodecontrollerisdesignedtoensurethatthestatetrajectoriesreachtheslidingsurfaceinfinitetimeandremainonitthereafter.Numericalsimulationisemployedtoverifytheeffectivenessoftheproposedapproach.

简介：这研究在Jiaoshiba区域和煤气的累积模式的Longmaxi形成基于沉积条件，器官的地球化学，存储空格，物理性质，岩性学和页岩气体水库的煤气的内容被总结然后与那相比在北美洲。在在Jiaoshiba的Longmaxi形成的页岩气体水库有好地质的条件，优秀页岩的大厚度，高器官的满意的、高煤气的内容，好物理性质，合适的深度，好保藏条件和好水库类型。在深架的底部的优秀页岩是为页岩气体探索和开发的主要目标间隔。在Longmaxi形成的页岩气体经历了三个主要reservoiring阶段：烃产生和压缩的早阶段页岩气体水库是什么时候，首先形成了；深埋葬和大规模烃产生的中间的阶段，它与页岩气体引起了水库的丰富；迟了的阶段高举，侵蚀和破裂开发当页岩气体水库最后被形成时。

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