基于GIS的水环境评价决策支持系统—模型库的设计与实现

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1、沈阳工业大学硕士学位论文基于GIS的水环境评价决策支持系统—模型库的设计与实现姓名：高鸿雁申请学位级别：硕士专业：控制理论与控制工程指导教师：崔宝侠20040301沈阳工业大学硕士学位论文WaterEnvironmentEvaluationDSSbasedon锺S——1rheDesignandRealizationofModelBaseAbstractNeuralNetworkhasbeenwidelyusedinmanyfieldssinceitcarrieintobei蚰g．Nowithasbeendevelopedtobeausefulnonlin

2、earprocessingt001．Predictionisoneofimportantapplicationfieldofneuralnetwork。Sincemostoftbegeneralpredictingmethodshavedifficultinprocessingnonlinearcases．Whileneuralnetworkiscompetentfornonlinearprocessingforitsexcellentnonlinearcharacter，predictingmetllodsbasedonneuralnetworkext

3、endthespaceofpredictingresearch+Waterresoulv凇isanimportantenvironmentrcsoulr弛inrealizingthepersistencedevelopment．Inthecourseofestablishwaterenvironmentmodel，wecommonlytakethemainfactorsintoaccountandneglectthesubordinatefaetorsinvirtualofthecomplexityofwaterenvironment．Itbringso

4、nmanyproblems穗waterenvironmentevaluationmanagement．Thefollowingsarewhatthispaperhasdoneinpredictionresearchespeciallywaterenvironmentinfluenceevaluation．ThispaperdesignedandrealizedanmodelsinthewaterenvironmentevaluationDSSbasedonGIS．Itincludesmodelbasemanagementsubsystem；wateren

5、vironmentactualityevaluationsubsystem；waterenvironmentforecastanalysissubsystem．ARerpredigest啦andrealizingthewaterquerymathematicmodels，theneuralnetworkmodelisusedtoforecastthewaterenvironmentinfluence；thegeneticarithmeticisusedtooptimizetheparametersandstructureofneuralnetwork．T

6、hensystemdesigning，interfacedevelopmentandmodelprogamm崦havebeendone．Theresultshowsthatneuralnetworkmodelismol'epreciselyandconvenientthanvqatermathematicmodel．Geneticalgorithmcanchoosetheexactslrueture‘ofmodel．Itmakestheneuralnetworkmotequicklyandefficiently．KeyWords：DecisionSupp

7、ortSystem，GeographicInformationSystem，ModelBase，NeumlNetwork,GeneticAlgorithm,WaterEnvironmentEvaluation-2*独创性说明本人郑重声骥：所呈交的论文是我个入在导爨指导下进行瓣研究工作及取褥豹研究戏暴。尽我所翔，除了文申特剃翻以标注和致谢瀚地方外，论文中不包含熟他人已经发表或撰写的研究成果，也不包含为获得沈阳工业大学或其他教育机构的学位或证鹳所使用过的材料。与我一圊工终鲍囝志对本辑究所擞黧任鬻贡献蚜已在论文孛皲了骥穗豹镰爨并表示了谢漱。签名；耋!蜢西瓤搜鱼

8、：玉点．关予论文使建授权酶说明本人完全了簿洗鞫工整大学畜关媒鹫、健震学饿论文懿巍