简介:Theopticalparametersforthreesamplesofintrinsic,dopedSianddopedMg(AlxGa1-x)yIn1-yPpreparedbytheMOCVDonGaAssubstrateweremeasuredbyusingellipsometryandwerecalculatedbythetwo-layerabsorptionfilmmodel.Theresultsobtainedwerediscussed.Thegrownratesandthicknessofoxidiclayerontheintrinsic(AlxGa1-x)yIn1-yPsurfaceexposedintheatmospherewerestudied.Alineardependenceofoxidiclayerthicknessonthetimewasobtained.
简介:Lithium-aluminum-cobalt-nickeloxideLiAlxCoyNi1xyO2particles,generallyusedascathodeoflithiumbattery,werepreparedbychemicalcoprecipitationfromanaqueoussolutionofLiOH,Al(NO3)3,Co(NO3)2andNi(NO3)2withNH4OH.XRD,SEMandFTIRwereusedtoexaminetheeffectofnickelcontentontheproduct.FTIRpatternsshowedthatincreaseinnickelcontentdecreasedtheabsorptionstrengthofthepeakofspinelstructureoftheproduct,attributedtotheoccupationbynickelinthealuminumsites.Particlesizeandelectricalpropertiesofthelithium-aluminum-cobalt-nickeloxide(abbreviatedasLACNO)particleswerealsodetermined.
简介:设D是无平方因子正整数.本文证明了:当D不能被形如6k+1之形素数整除时,方程,-1=Dyn仅当D=17时有正整数解(x,y,n)=(18,7,3)适合n>2.
简介:摘要:高等职业教育实施“双证书”制度的目的是建立一个适应我国经济和社会发展要求的 ,以职业标准为导向 ,以职业能力为培养核心的,职业资格证书和学历证书沟通与衔接的 ,具有高等职业教育职业特色的培训体系 ,为我国经济持续发展提供强有力的人才支撑。高职教育实施“ 1+x”证书制度是对高职教育一个有力的促进,也是一个考验。
简介:SomecharacterizationsoftheconditionalexpectationoperatorsonLebesgue-BochnerspacesL_p(μ,X)aregiven,where1≤p<∞,p≠2.AlsoanexampleisgiventoshowthatthecharacterizationsoftheconditionalexpectationoperatorsonL_p(μ,X)aredifferentfromthatonL_p(μ)_zFinally,arepresentationoftheconstant-preservingcontractiveprojectiononspacesL_p(μ,X)isgotwhen0
1.
简介:Inthispaper,weanalyzeabulkinputM[X]/M/1queuewithmultipleworkingvacations.Aquasiuppertriangletransitionprobabilitymatrixoftwo-dimensionalMarkovchaininthismodelisobtained,andwiththematrixanalysismethod,highlycomplicatedprobabilitygeneratingfunction(PGF)ofthestationaryqueuelengthisfirstlyderived,fromwhichwegotthestochasticdecompositionresultforthestationaryqueuelengthwhichindicatestheevidentrelationshipwiththatoftheclassicalM[X]/M/1queuewithoutvacation.ItisimportantthatwefindtheupperandthelowerboundsofthestationarywaitingtimeintheLaplacetransformorderusingthepropertiesoftheconditionalErlangdistribution.Furthermore,wegainthemeanqueuelengthandtheupperandthelowerboundsofthemeanwaitingtime.
简介:[摘要]:温儒敏教授指出:语文教学要采取“1+X”的办法,即讲一篇课文,附加若干篇课外阅读的文章。这也是目前在语文教学活动中,老师们经常采用的教学指导模式,在文言文教学中,“1+X”的教学模式,既能引导学生举一反三,迁移运用,助力学生提高学习能力,提升思维能力,丰厚学生的文化底蕴。
简介:摘要:国务院印发《国家职业教育改革实施方案》以来,各试点院校按照“1+X”证书制度开展考证。本院校也响应国家政策组织了多次的“X”证书考证。在组织的过程中不断总结,发现了此方面很多的不足之处和需完善的地方,在此把问题列举出来,以便在今后的实施过程中不断进行过程改善,以求对今后工作提供便利。