简介:阐述了传统GIS系统的不足及IntranetGIS系统的特点与组成内容,介绍了IntranetGIS系统建造时应注意的问题,同时提出了解决思路。
简介:Ageographicinformationsystem(GIS)isahardware/softwaretoolwhichisveryeffectiveincollecting,storing,searching,handling,andvisualizinggeographicdatatogetherwiththeirdescriptiveattributes.Suchatoolisveryhelpfultoapproachawiderangeofsituations,includingmanylogisticproblems.ENEA,astheagencyhavingthetaskofimplementingtheItalianAntarcticProgram(PNRA),hasdecidedtouseaGIS,inordertoincreasetheefficiencyinmanagingthehugeamountofdatacollectedinthecourseofItalianactivityinAntarctica,whichcountsfifteenexpeditionsuptonow.
简介:马汉曾说“当一个国家处于战争之中,它的全部边境和对方的全部边境都是进攻的对象”。如果我们的敌人象在南联盟一样炸毁沿海的化工厂、炼油厂、核电站,使大量有毒、有害、含辐射污染的物质泄露,造成广阔的海域、空域环境污染,那我们的非战斗减员将大大增加,对海上的卫勤救护、卫勤指挥工作将造成很大的难度,因而,如何获取实时的海上战场的伤病信息,
简介:Inordertosetupaconceptualdatamodelthatreflectstherealworldasaccuratelyaspossible,thispaperfirstlyreviewsandanalyzesthedisadvantagesofpreviousconceptualdatamodelsusedbytraditionalGISinsimulatinggeographicspace,givesanewexplanationtogeographicspaceandanalyzesitsvariousessentialcharacteristics.Finally,thispaperproposesseveraldetailedkeypointsfordesigninganewtypeofGISdatamodelandgivesasimpleholisticGISdatamodel.
简介:ThedevelopmentofInternetprovidesconvenientenvironmentforinformationsearchingandbrowsing.Italsoofferssanewplatformforgeographicinformationprocessingandanalysis.ThispaperdiscussesorganizationandprocessingapproachtoInternetgeographicinformation,andprovidesanewmethodtocross-platformanddistributedgeographicinformationanditssoftwareimplementation.Theexampieisusedtoshowthepracticalityandsuperiorityofthismethod