简介:Nonlinearmixedeffectsmodel(NLMEM)isbasedontherelationshipbetweenthefixedandrandomeffectsintheregressionfunction.TheNLMEMhasacompetitiveadvantageinanalyzingrepeatedmeasuresdata,thelongitudinaldataandmultileveldata.Thispaperchosetwokindsoftwo-levelnonlinearmixedmodeltoanalyzebasalareagrowthforChineseFir(Cunninghamialanceolata).Model1isageneraltwo-levelNLMEMandModel2isbasedonModel1tofurtherconsiderthefixedeffectsparameterschangeswithaspecificfactor.Firstly,throughtheanalysisofthesetwomodels,thispaperdefinedthebasicmodeltobuildthetwo-levelNLMEM.Secondly,665kindsofmodelsderivedfromModel1and2703kindsofmodelsderivedfromModel2werecalculatedandcompared.Theresultsshowedthat:forModel1,therewere57kindsofmodelsconverging,andwhentheformalparameterb0consideredtheblockeffectsandploteffects,b1andb4onlyconsideredtheblockeffects,themodelfittedthebest;andforModel2,therewere24kindsofmodelconverging,andwhentheformalparameterbsconsideredtheblockeffectsandploteffects,b1onlyconsideredblockeffectsandthefixedeffectsb0changedwithanylevelofblocklevel,Model2fittedthebest.Finally,bycomparingthetraditionalnonlinearregressionmodel,Model1andModel2,theresultsshowedthatModel1andModel2fittedbetterthanthetraditionalnonlinearregression,andModel2wasbestfittingmodel.
简介:Weexamineanenergyharvestingsystemoftwomagnetopiezoelasticoscillatorscoupledbyelectriccircuitanddrivenbyharmonicexcitation.Wefocusontheeffectsofsynchronizationandescapefromasinglepotentialwell.Inthesystemwithrelativemistuninginthestiffnessoftheharvestingoscillators,weshowthedependenceofthevoltageoutputfordifferentexcitationfrequencies.
简介:ThePianoLessonmainlyfocusesontheconflictcausedbytwooppositeattitudestowardstheheirloom-piano.ThesisterBernieceisdeterminedtokeepthepianoandguardit,forsheconsidersitasthe"sacredicon"ofthesacrificialhistoryofherfamily.WhilethebrotherBoyWillietrieseverywaytosellit,desiringtomakeafortunebybuyingafarmandworkonit.Bothattitudeshavetheirlimitationsrespectively,whichforcesthesiblingstoturntothetraditionalwaytosolvetheconflict.Theythenrealizehowtousethepiano-thesymbolofhistoryandculturallegacy.Thatistokeepitanduseit.
简介:Stereomatchingisafundamentalandcrucialproblemincomputervision.Inthelastdecades,manyresearchershavebeenworkingonitandmadegreatprogress.Generallystereoalgorithmscanbeclassifiedintolocalmethodsandglobalmethods.Inthispaper,thechallengesofstereomatchingarefirstintroduced,andthenwefocusonlocalapproacheswhichhavesimplerstructuresandhigherefficiencythanglobalones.Localalgorithmsgenerallyperformfoursteps:costcomputation,costaggregation,disparitycomputationanddisparityrefinement.Everystepisdeeplyinvestigated,andmostworkfocusesoncostaggregation.Westudiedmostoftheclassicallocalmethodsanddividethemintoseveralclasses.Theclassificationwellillustratesthedevelopmenthistoryoflocalstereocorrespondenceandshowstheessenceoflocalmatchingalongwithitsimportantanddifficultpoints.Attheendwegivethefuturedevelopmenttrendoflocalmethods.
简介:试图在安息香perkinsiae的bark学习化学成分。混合物与色析法的方法被孤立的方法,和他们的化学结构被阐明根据光谱数据。结果十混合物作为5-(2-propen-1-one)被孤立并且鉴别-7-methoxy-2-(3,4-methylenedioxyphenyl)benzofuran(1),1-hydryoxyegonolgentiobioside(2),obassiosideB(3),egonol(4),egonol配糖物(5),egonolgentiobioside(6),egonolgentiotrioside(7),styraxlignolideB(8),styraxjaponosideC(9),和masutakeside我(10)。结论混合物1和2是新2-phenylbenzofurans。
简介:Thispaperpresentsanewbasis,theWSBbasis,whichunifiestheBernsteinbasis,Wang-BallbasisandSaid-Ballbasis,andthereforetheBéziercurve,Wang-BallcurveandSaid-BallcurvearethespecialcasesoftheWSBcurvebasedontheWSBbasis.Inaddition,therelativedegreeelevationformula,recursivealgorithmandconversionformulabetweentheWSBbasisandtheBernsteinbasisaregiven.
简介:Inthispaper,weconsiderthegeneralizedtranslationsassociatedwiththeDunklandtheJacobi-Dunkldifferential-differenceoperatorsonthereallinewhichprovidethestructureofsignedhrpergroupsonR.Especially,westudytherepresentationofthegeneralizedtranslationsoftheproductoftwofunctionsforthesesignedhypergroups.