简介:Thedomainoflinearfunctionf(x)=ax+b(a≠0)isR,itsrangeisR.Thedomainofinverseproportionfunctionf(x)=(k/x)(k≠0)is{x|x≠0},itsrangeisB={y|y≠0}.Thedomainofquadraticfunction,f(x)=ax~2+bx+c(a≠0)isR,itsrangeisB.B={y|y≥(4ac-b~2)/4a},whena>0;B={y|y≤(4ac-b~2/4a)},
简介:Wehavelearnedtheconceptofthefunc-tioninthejuniorhighschool.Itiswhatde-scribeslikethis:Establishtohavetwovariablesxandyinavarietyofprocess.Ifyisauniqueelementassignedtoeveryx,sayingyisafunctionofx;xiscalledtheindependentvariable.
简介:Hereweexploresomefundamentalaspectsofwhatmaybetermedasanewarithmeticfunction(definednotionallyastheTfunction)togetherwithitspossibleinverse(TI),asitisnotinfrequentdiscussionamongthenumbertheorists.
简介:The11thFiveYearPlanhasdividednationalfunctionalzonesinthebasicunitofcounty-leveladministrativeregion.AfterimplementationofnationalMajorFunction-orientedZones(MFOZ)atprefectureandcountylevels,thespatialdevelopmentsequencemustbespecified,developmentintensitymustbelimited,orientedzonesmustbedesignatedand"redline"areasofspatialgovernancemustbedefined.Inviewoftheabove,choosingatypicalcountyareaandexploringitsfunctionalzoningafterorientingitsmajorfunctionswillsupplyreferenceforcarryingoutthenationalspatialplanninginthe12thFiveYearPeriod,anditwillalsoprovideexperienceforthestudyoffunctionregionalizationwhichisthethemeofMFOZinthepresentacademiccircles.Inthispaper,theauthorstakeShangyuCountyasanexampletostudythegeneralprinciples,trainofthoughtofcounty-levelfunctionalregionalizationindevelopment-optimizedareas,andtoexploreitsreasonablefunctionalzoningplan.Consequently,theauthorspresentfiveprinciplesandsuggestafunction-orientedzoningplanwith2levelsand4types.
简介:ACHANGEDNAMEWITHANEVOLVINGFUNCTION¥XieZhenmingOnSeptember20.1994,MianzhuCounty,SichuanProvincechangedthenameofitsFamilyPlanni...
简介:Forasystemofflexiblepolymermolecules,theconceptsoftwoconcentrations,namelythesegmentalandthemolecularconcentrations,havebeenproposedinthispaper.Theformerisequivalenttothevolumefraction.Thelattercanbedefinedasthenumberofthegravitycentersofmacromoleculesinaunitvolume.Thetwoconcentrationsshouldbecorrelatedwitheachotherbytheconformationalfunctionofthepolymerchainandshouldbediscussedindifferentthermodynamicequations.OnthebasisoftheseconceptsithasbeenprovedthattheFlory-Hugginsentropyofmixingshouldbetheresultofthemixing'idealgasesofthegravitycentersofmacromolecules'.Thegeneralcorrelationbetweenthefreeenergyofmixingandthescatteringfunction(structuralfactor)ofpolymerblendshasbeenstudiedbasedonthegeneralfluctuationtheory.WhentheFlory-Hugginsfreeenergyofmixingisadopted,thedeGennesscatteringfunctionofapolymerblendcanbederived.
简介:Inthispaper,therelationshipbetweenRiemann-Liouvillefractionalintegralandthebox-countingdimensionofgraphsoffractalfunctionsisdiscussed.
简介:ThispapergivesamethodofdescentforthelocallyLipschitzianfunction.Itisassumedthatthegeneralizedsubgradientsetofthedifferentiablepointisasingletonpoint.Weintroduceanimplementablealgorithmwhichisgloballyconvergent.Numericalexamplesshowtheimplementationandefficiencyofthealgorithm.
简介:Inordertoconstructestimatingfunctionsinsomeparametricmodels,thispaperintroducestwoclassesofinformationmatrices.Somenecessaryandsufficientconditionsfortheinformationmatricesachievingtheirupperboundsaregiven.Fortheproblemofestimatingthemedian,someoptimumestimatingfunctionsbasedontheinformationmatricesareacquired.Undersomeregularityconditions,anapproachtocarryingoutthebestbasisfunctionisintroduced.Innonlinearregressionmodels,anoptimumestimatingfunctionbasedontheinformationmatricesisobtained.Someexamplesaregiventoillustratetheresults.Finally,theconceptofoptimumestimatingfunctionandthemethodsofconstructingoptimumestimatingfunctionaredevelopedinmoregeneralstatisticalmodels.
简介:人的耳朵是为正常通讯的听觉的一台精细的感觉仪器,并且它的合适的工作高度依赖于mitochondrialoxidativephosphorylation。为nonsyndromic和aminoglycoside-inducedhearing损失的第一mitochondrial点突变在1993被识别。从那以后,很多个继承mitochondrial变化在听见损失被含有。大多数为联系mitochondrialdisorder的听觉损失负责的分子的缺点是在12SrRNA基因和tRNA基因的变化。在这评论,在对正常听觉机制和mitochondrial的短描述以后,我们构画出在联系聋的mitochondrialmutations的鉴定被做了的最近的进展,并且讨论mitochondrial机能障碍怎么贡献听觉损失。