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1、水华论文翻译终稿 （1）Assumingthatweignorethesuddenbadweatherlikehurricaneaffectiontowardswaterblooms （2）Assumingthatthechlorophyllaconcentrationistheonlystandardtomeasurethewaterlevel. （3）Assumingthatweuseoneweekastheunittimetopredictbloomsour.2.2Theprovisionsofthesymbol
2、sandinstructionsSymbolsProvisionsTNTotalnitrogenTPTotalPhosphorusSDWaterTransparencyWTWaterTemperatureDODissolvedOxygenCChlorophyllaJTransitionlayernodenumbermInputlayernodesnumbernOutputlayernodenumber()ixkKinputsample()idkKoutputsample()hhik、()hyikEachnodeinputtr
3、ansitionlayer()hhok、()hyokEachnodeoutputtransitionlayer()δokPartialderivativeoftheerrorfunctiontothenodeoftheoutputlayer()δhkTheoutputofthetransitionlayercalculationerrorfunctionforthepartialderivativeoftransitionlayerneurons()howkconnectingweightvalues.EGlobalErro
4、r3.Analysisandsolutionoftaskone3.1AnalysisoftaskoneWearerequestedtoestablishamodeltopredictthetimeofthebloomphenomenon,inordertogiveageneralpredictionforthefuturewaterblooms.Forhavingahigherforecastauracytowaterblooms,byparingsomestatistics,weselectsomefactorswhich
5、cancauseabiginfluenceinwaterblooms.WechooseXiangxiRiverwaterqualityinspectionreportasthedatasource,processthedatainanormalizingway,andbuildaworkmodel,wealsousetheMatlabsoftwaretoscreendatarepeatedlybyusingthemethodofcrosschecktodetermihestandardizationofwaterblooms
6、happening.3.2ThesolvingstepsfortaskoneStep1:Aordingtotheanalysis,themaininternalfactorofinfluencingwaterbloomsbreedingisnutritivesalt,suchasN,Pisnecessarynutritionelementstothegrowthofalgae,followedbythewater,theoptimumtemperatureofalgaebloomsinrapidbreedingis25~30
7、°C.Moreover,moderatelightconditionsarealsoconducivetotheproductionandagglomerationofalgaeblooms.Underthe500~1000lxlightintensityalgaegrowthismorequickly,andPHvalue,surfacewindspeedandgeography,watertemperaturearealsootherfactorstoeffectthegrowthofwaterbloom.Wecanbu
8、ildathree-tierworkmodel,andselecttwoperiodwhichnotbelongtothewaterbloomstimeandnottransitintothewaterbloomstimeyetunderthetotalnitrogen(TN),total
