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25 个结果
  • 简介:Thevolumesperoxygenofsomesilicatemeltshavebeencalculatedandthencomparedwiththoseofsilicateglasses.Itissuggestedthatthevolumeofasilicatemeltcanbedividedintotwoparts.Oneiscontributedbythesilicon-oxygennetworkandtheotherbythe“oxides”.VariationpatternsofVPOssuggestthatthevolumeoftheSi-Onetworkgenerallyremainsunchangedandtheexpansionofthemeltiscausedmainlybythelocatexpansionofthe“oxides”.ItisfurtherproposedthattheradiusofO^2-showslittlevariation,instrikingcontrasttotheradiusofcations.Themechanismgoverningtheexpansionisdiscussedindetail.

  • 标签: 熔融硅酸盐 金属化合物 二氧化硅 玻璃 氧化物 硅-氧键
  • 简介:Allpeopleareequalbeforelawandhumanrightsmustberespectedandguaranteed.ThisisanestablishedprincipleinChinainbringingaboutaharmonioussociety.Buthowshouldpolicerespectandensurehumanrightsinexercisingtheirpowers?Bounden-Duty

  • 标签: 警察 人权 中国 公民权利
  • 简介:让R是一枚恰好协调的戒指和Db(R-Mod)左R模块的围住的导出的范畴。由\表示({D^b}{\left({R-现代派}\right)_{\widehat{\left[{GF,C}\right]}}}\)与两种有限Gorenstein扁平的尺寸和cotorsion尺寸和Kb(FC由所有建筑群组成的Db(R-Mod)的子范畴)扁平的cotorsion的围住的homotopy范畴离开了R模块。我们证明商triangulated范畴\({D^b}{\left({R-现代派}\right)_{\widehat{\left[{GF,C}\right]}}}\)/Kb(FC)完全是到所有Gorenstein的Frobenius范畴的稳定的范畴GFC的三角等价物,cotorsion离开R模块。

  • 标签: 范畴 平坦模 FROBENIUS 奇点 左R-模 平坦维数
  • 简介:ThepreviouspaperreportedanewderivativeintheEuleriandescriptioninflatspace—thegeneralizedcovariantderivativeofgeneralizedEuleriancomponentwithrespecttotime.ThispaperextendsthethoughtfromtheEuleriandescriptiontotheLagrangiandescription:onthebasisofthepostulateofcovariantforminvariabilityintimefield,wedefineanewderivativeintheLagrangiandescriptioninflatspace—thegeneralizedcovariantderivativeofgeneralizedLagrangiancomponentwithrespecttotime.Besides,thecovariantdifferentialtransformationgroupissetup.ThecovariantforminvariabilityofLagrangianspace-timeisascertained.

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  • 简介:ThispaperreportsanewderivativeintheEuleriandescriptioninflatspace-thegeneralizedcovariantderivativewithrespecttotime.Thefollowingcontentsareincluded:(a)therestrictedcovariantderivativewithrespecttotimeforEuleriancomponentisdefined;(b)thepostulateofthecovariantforminvariabilityintimefieldissetup;(c)thegeneralizedcovariantderivativewithrespecttotimeforgeneralizedEuleriancomponentisdefined;(d)thealgebraicstructureofthegeneralizedcovariantderivativewithrespecttotimeismadeclear;(e)thecovariantdifferentialtransformationgroupintimefiledisderived.TheseprogressesrevealthecovariantforminvariabilityofEulerianspaceandtime.

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  • 简介:Thegeneralequationsofsecondaryinstabilitywithrespecttothree-dimensionalsubharmonicdisturbancesarederivedandappliedtoBlasiusboundarylayerinthepresentpaper.Thetheoreticalresultsofevolutionandspatialdistributionofsubharmonicdisturbancesarecomparedwithexperimentaldata.There-suitsshowtheimportantroleoftheprocessofroutetotransitioninlow-disturbanceenvironments,andindi-catethatspatialmodeismorerationalthantemporalmode.

  • 标签: secondary instability spatial MODE TEMPORAL MODE
  • 简介:由使用矩阵的向量方法,我们关于线性限制学习生长曲线模型。在矩阵损失功能和向量损失功能下面,我们在不同类的线性类上为参数的线性评估者的考虑获得必要、足够的条件。

  • 标签: 矩阵 矢量法 特征值 代数
  • 简介:Inthispaperbasicresultsforatheoryoforthogonalmatrixpolynomialswithrespecttoaconjugatebilinearmatrixmomentfunctionalareproposed.Propertiesoforthogonalmatrixpolynomialsequencesincludingathreetermmatrixrelationshiparegiven.PositivedefiniteconjugatebilinearmatrixmomentfunctionalsareintroducedandacharacterizationofpositivedefinitenessintermsofablockHaenkelmomentmatrixisestablished.Foreachpositivedefiniteconjugatebilinearmatrixmomentfunctionalanassociatedmatrixinnerproductisdefined.

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  • 简介:Inthecrucialperiodofbuildingamoderatelyprosperoussocietyanddeepeningreformandopeningup,andofacceleratingthetransformationofeconomicdevelopment,the18thNationalCongressoftheCommunistPartyofChina,whichwasheldinNovember2012,madecomprehensivearrangementsfortheundertakingsofboththePartyandtheState,furtherclarifiedthegoalsandgrandblueprintforfuturedevelopmentinthenextperiod,andleftanimportantandfarreachingimpactonthedevelopment

  • 标签: 中国共产党 人权 保障 解读 改革开放 经济发展
  • 简介:Currentproceduresformass-flowhopperdesignarebasedontheradialstresstheorydevelopedbyJenikeandinvolvethedeterminationofthecriticaloutletdimensionsforflowtobeinitiated.Theseproceduresignorethesurchargeloadsonthehopperandinvolveastudyofthepassiveorarchedstressfieldthatexistsunderflowconditions.Analternativeapproachasappliedtohopperwallloadanalysisistoemploythehorizontalslicemethod.Thearchedstressfieldandhorizontalslicemethodsofanalysisarecompared.Theinfluenceofsurchargeloadsinthedeterminationofhoppergeometryisinvestigated.

  • 标签: 料斗设计 应力场 人员流动 填料 水平切片 应力理论
  • 简介:MakinguseofWrightoperatorweintroduceanewclassofcomplex-valuedharmonicfunctionswithrespecttosymmetricpointswhichareorientationpreserving,univalentandstarlike.Weobtaincoefficientconditions,extremepoints,distortionbounds,andconvexcombination.

  • 标签: 对称点 超几何函数 星象函数 赖特 谐波 广义
  • 简介:Thinkingabilityofaman,whichisthecoreofwisdom,participatesinanddominatesalltheintellectualactivities.Thisstudy,pursuedontheontologicalandpracticallevel,isaimedatcultivatinglearners’thinkingabilitiesinforeignlanguageteaching(FLT)inbasiceducationofChina.RegardingEnglishteachingreforminbasiceducationofChinaasthebackground,thisthesisprobestobringittotheforefrontandputforwardapproachesandstrategiesofincorporatingthecultivationoflearners’thinkingabilitiesintoeveryaspectoftheteachingprocedures.

  • 标签: CULTIVATING learners’thinking ABILITIES REFORM in