简介：ThedevelopmentofInternetprovidesconvenientenvironmentforinformationsearchingandbrowsing.Italsoofferssanewplatformforgeographicinformationprocessingandanalysis.ThispaperdiscussesorganizationandprocessingapproachtoInternetgeographicinformation,andprovidesanewmethodtocross-platformanddistributedgeographicinformationanditssoftwareimplementation.Theexampieisusedtoshowthepracticalityandsuperiorityofthismethod

简介：Inthefirstpartofthepresentpaperwehaveexplainedwhywemanagetoformulateanotherwavepredictionmodelwhensomanyofthem,includingtheso-calledthirdgenerationmodel,havealreadybeeninuse.Thewind-wavepartoftheproposedmodelhasalsobeengiven.Nowweproceedtodiscusstheswellpart,theimplementationofthemodelasapredictionmethod,mumericalexperimentsdonewithidealwindfieldsandhindcastsmadeintheBohaiSea,intheneighboringseasadjacenttoChinaandintheNorthwestPacific.

简介：ManyInternet-GIShavebeenimplementedonthewebandtheyareincreasinglybecominganimportantpartofmultimediacartographythathasmuchmoreusersascomparedtotraditionalGISproductionmedia.InternetGIStechnologyhasprovidedtheGISdynamicinformationacquisitionwithtechnicalsupport.Also,thevisualizationtechnologyofelectronicmaphasprovidedtoolsforGISsymbolswithdynamiccharacteristics.OnthebasisofGISdynamicinformationacquisition,thedesignideaandimplementationmethodsofdynamicsymbolsindynamicGISarepresentedinthisarticle.

简介：OGCWebMapServiceisonekindofOGCPortrayalServicesbelongstoOGCWebServicemodelanditprovidesmulti-platforminteroperabilityofspatialdataset.ThispaperpresentsamethodforimplementingOGCWebMapServicebasedonWebServicetechniqueandintroducesthedetailedprocess.

简介：ThispaperdevelopsaWebGIS-basedGPSvehiclemonitoringsystemwithtypicalthree-tierapplicationarchitectureofB/Spattern.Itprovidesordinaryregistereduserswithavalidandconvenientmeanstogetaccesstoreal-timeGPSlocationinformationofcertainmovingvehiclesatanyplace,andfurtheroffersapowerfultoolforsuperuserstomanageuserinformationandremotelymonitorthosevehiclesandprovidecorrespondingservicestimelyifnecessary.Thesystemarchitecture,functionmodules,keytechnologiesandapplicationinterfacesaregiven.Finally,thevalidityofoursystemisdemonstratedinpracticalcases.

简介：AnestednumericalstormsurgeforecastmodelfortheEastChinaSeaisdeveloped.Aone-wayrelaxingnestmethodisusedtoexchangetheinformationbetweencoarsegridandfinegrid.Intheinnerboundaryofthefinegridmodelatransitionareaissetuptorelaxtheforecastvariables.Thisensuresthattheforecastvariablesofthecoarsemodelmaytransittothoseoffinegridgradually,whichenhancesthemodelstability.Byusingthismodel,anumberofhindcastsandforecastareperformedforsixseverestormsurgescausedbytropicalcyclonesintheEastChinaSea.Theresultsshowgoodagreementwiththeobservations.

简介：Theauthorsmakeanendeavortoexplainwhyanewhybridwavemodelishereproposedwhenseveralsuchmodelshavealreadybeeninoperationandtheso-calledthirdgenerationwavemodejisprovingattractive.Thispartofthepaperisdevotedtothewindwavemodel.Bothdeepandshallowwatermodelshavebeendeveloped,theformerbeingactuallyaspecialcaseofthelatterwhenwaterdepthisgreat.Thedeepwatermodelisexceptionallysimpleinform.Significantwaveheightistheonlyprognosticvariable.Incomparisonwiththeusualmethodstocomputetheenergyinputanddissipationsempiricallyorby"tuning",theproposedmodelhasthemeritthattheeffectsofallsourcetermsarecombinedintoonetermwhichiscomputedthroughempiricalgrowthrelationsforsignificantwaves,theserelationsbeing,relativelyspeaking,easierandmorereliabletoobtainthanthoseforthesourcetermsinthespectralenergybalanceequation.Thediscretepartofthemodelandtheimplementationofthemode

简介：这是主要讨论CRNM的实现问题的论文的一个三部分的系列的期末考试。在系列的开始的二篇论文分别地介绍了当模特儿的背景和方法论。CRNM的全面体系结构在最后纸被建议了。根据上面讨论，为为一条轨道的地点点提供空间参考书的一个线性参考书方法(LRM)被开发。案例研究被介绍说明CRNM的应用程序因为在真实世界上为一个道路网络建模被给。Acomprehensive结论为报纸的系列被给。

简介：TheprimarygoalofthedemonstrationprojectendorsedbytheScientificandTechnicalCommitteeforIDNDRin1992istoensurethatnationalagenciesareabletoassessseismichazardinaregionallycoordinatedfashionbyusingadvancedmethods.China,asaRegionalCenterofCentralSouthernAsia,hascontactedwithcountriesoftheregiontorealisticallypracticeseismichazardassessmentsofContinentalAsia.AtestarealocatedinthecollisionboundarybetweentheIndianandEurasianplateswaschosentoexaminetheseismichazardassessmentapproachintheregionalcoordinates.TheseismotectonicsandthreeversionsofseismicsourcesofthetestareaaredescribedinthispaperandundertheGlobalSeismicHazardAssessmentProgram(GSHAP),guidelinesanearthquakecatalogueofthetestareawasassembled.Becauseoftheincompletenessofearthquakedataindifferentcountries,weadoptdifferenttimewindowsfordifferentmagnitudeintervalsinordertoobtaintheseismicityparametersofsources.Byu