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ID:36569739
大小:2.65 MB
页数:59页
时间:2019-05-12
《基于粒子群算法的湖泊富营养普适指数公式的研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、西南交通大学硕士学位论文基于粒子群算法的湖泊富营养普适指数公式的研究姓名:芦垒申请学位级别:硕士专业:环境工程指导教师:欧阳峰20080901西南交通大学硕士研究生学位论文第Ⅱ页ABSTRACTNowadaysthelakeeutrophicationhasbecomeaworldwideproblemintheareaofwaterpollutioncontrol,anditisalsoagJobelenvironmentalproblem.MostoftheInlandfreshwaterinEuropeand.NorthAmericaareEutrophicnowor
2、later.Atpresent,theproblemoflakeeutrophicationcausedbyWaterpollutionisveryprominentinOurCOUQtly,whichimpedethedevelopmentofenconomy.InOurcolInt呵,"NinthFive-YearPlan”,wehavelaidaemphsisonthetreatmentofTaihuLake,Dianchiand.Chaohu.Thisarticlediscusstheresearchsignificanceofthecomprehensiveind
3、exformulabasedonapowerfunctionofweightedsumsandthestatusquoofevaluationmodelshomeandabroadatfirst.Italsointroduceanddescribethecurrentstatesofthelakeeutrophication,thecharacten'istics,theharmofthelakeeutrophicationandthebasicprincipleofparticleswarmoptimizationwhichisalsoillustratedindetai
4、l.AprogrambasedOBthebasicprincipleofparticlesw&rmhasbeendesignedtooptimizetheparametersoftheuniversalindexformula.Optimizationofparametersinformulaiscarriedoutusingparticleswarmoptimizationtoderiveauniversalformulaofevaluationoflakeeutrophicationsuitedtomulti-index.Inordertotesttheeffectof
5、theuniversalindexformula,thisarticlecomparestheevaluationresultsofthirtyrepresentative1akesinChinawiththeresultswhicharerespectivelyfromRandomizedevaluationofthelaw,FuzzyevaluationandGrayevaluationmethod.Theresultsshowthesimplicityforcalculation,practicality,generality,comparabilityandobje
6、ctiveness.Atlast,takeShengzhongReservoirasanexample,thisarticletestifiestheapplicabilityoftheuniversalindexformula.Atthesametime,thisarticlehasgivensomepiecesofadviceforthephenomenonoflakeeutrophicationofShengzhongReservoir.Keywords:Eutrophication,Particleswarmoptimization,Optimalalgorithm
7、西南交通大学四南父迥大罕学位论文版权使用授权书本学位论文作者完全了解学校有关保留、使用学位论文的规定,同意学校保留并向国家有关部门或机构送交论文的复印件和电子版,允许论文被查阅和借阅。本人授权西南交通大学可以将本论文的全部或部分内容编入有关数据库进行检索,可以采用影印、缩印或扫描等复印手段保存和汇编本学位论文。本学位论文属于保密口,在年解密后适用本授权书;不保密日,使用本授权书。(请在以上方框内打材√’’).学位论文作者签名:罗-兰日期:常年/2月指导老师签名日期:护少年,西南交通大学四甯父逋大罕学位论文创新性声明
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