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  • 简介:Withthepopulationgrowing,alotofproblemshavecomeout,Nowadaysalotoftallbuildingshavebeenbuilt,butthehousesarestillveryshort;Alotofcarsandbuseshaveincreased,buttheyarestillcrowdedwithpeople;Alotofschoolshavebeenbuilt,

  • 标签: 高中 英语 学生习作 书面表达
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  • 简介:Inthispaperweinvestigateseveralsolutionalgorithmsfortheconvexfea-sibilityproblem(CFP)andthebestapproximationproblem(BAP)respectively.Thealgorithmsanalyzedarealreadyknownbefore,butbyadequatelyreformulatingtheCFPortheBAPwenaturallydeducethegeneralprojectionmethodfortheCFPfromwell-knownsteepestdecentmethodforunconstrainedoptimizationandwealsogiveanaturalstrategyofupdatingweightparameters.Inthelinearcaseweshowtheconnec-tionofthetwoprojectionalgorithmsfortheCFPandtheBAPrespectively.Inaddition,weestablishtheconvergenceofamethodfortheBAPundermilderassumptionsinthelinearcase.WealsoshowbyexamplesaBauschke'sconjectureisonlypartiallycorrect.

  • 标签: 可行性问题 近似值 投射方法 收敛函数
  • 简介:Thislooperdiscussesonelastoplasticproblemwithfrictionsgivenonapartoftheboundary.AssumingthatfrictionfollowssimplifiedCoulom’slaw,theauthorgivesanexplicitrelaxationofenergyandprovesthatthesolutionexists.

  • 标签: RELAXATION simplified ADMISSIBLE friction HOUGH EMBEDDING
  • 简介:在这份报纸,我们调查夸张Yamabe问题的答案为(1+n)维的Minkowski时空。更精确说,为n=的案例1,我们导出夸张Yamabe问题的一个一般答案;为n=的案例2,3,我们学习夸张Yamabe问题的光滑的答案的全球存在和发作现象;当时为一般多维的案例n2,我们为夸张Yamabe问题的一种准确答案讨论全球存在和不存在。

  • 标签: 夸张 Yamabe 问题 Minkowski 时空 波浪方程 光滑的答案 全球存在
  • 简介:现在的大学生是越来越多,找工作也越来越难,一些好一点儿的公司在招聘的时候除了必备中文简历之外,还要求提供英文简历和英文求职信。就在我愁眉苦脸的时候,真是天助我也,我从网上下载了一款专门制作英文求职材料的软件——All-PurposeResumes!有了它的帮助,英文简历和求职信?Noproblem!

  • 标签: 网上下载 软件 英文 中文 制作 帮助
  • 简介:Basedupontheresearchtotheeconomicequilibriumproblems,wepresentakindofnewmathematicalprogrammingproblem-interactionprogrammingproblem(abbreviatedbyIPP).TheIPPiscomposedoftwoormultipleparametricprogrammingproblemswhichisinterrelatedwitheachother.TheIPPreflectstheequalityandmutualbenefitrelationshipbetweentwo(oramongmultiple)economicplannersinaneconomicsystem.Inessence,theIPPissimilartothegeneralizedNashequilibria(GNE)gamewhichhasbeengivenseveralnamesintheliterature:socialequilibriagames,pseudo-Nashequilibriagames,andequilibriumprogrammingproblems.Inthispaper,weestablishthemathematicalmodelandsomebasicconceptstotheIPP.WeinvestigatethestructureandthepropertiesoftheIPP.WealsogiveanecessaryandsufficientconditionsfortheexistenceoftheequilibriumpointstoakindoflinearIPP.

  • 标签: Interaction PROGRAMMING problem EQUILIBRIUM POINTS PARTIAL
  • 简介:可扩展的标注语言(XML)为在基于万维网的应用代表并且互换数据成为了事实上的标准。并且XML看法,为指定用户的一扇虚拟窗户,广泛地被使用了。在实际系统,当他们需要通过看法更新来源数据时,用户们遇到所谓的看法更改问题。很长时间,看法更改问题是在数据库社区的一个待研究的问题。与各种各样的数据模型的开发,相应看法更改问题广泛地被研究了。在这篇论文,我们介绍看法更改问题的概念。我们调查并且比较以前的途径。特别,我们强调语义的角色。在XML上下文集中于这个问题,我们给讨论并且建议一个框架,它在看法定义时间收集语义信息。为实现这个框架的一些相关技术进一步被介绍。

  • 标签: XML视图 可扩展标记语言 视图更新 应用程序 语义信息 虚拟窗口
  • 简介:ONSTEFANPROBLEMWITHPRESCRIBEDCONVECTIONFahuakYi(易法槐)(SuzhouUniversity,DepartmentofMathematics,Suzhou,Jiangsu,215006China)Yipi...

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  • 简介:FormerlyagreatempirebuthavingsufferedalongperiodofoppressionbyWesternimperialistsafter1840,Chinaisverysensitiveaboutitsautonomy.CurrentlyseparatedfromthemodernworldorderdominatedbytheWest,Chinaneedstointegrateitselfintothis.So,thecoreproblemofChinesediplomacyisfindingabalancebetweenintegratingChinaintothemodernworldorderandmaintainingitsautonomy.Withinthisframework,IputforwardanewinterpretationofChineseforeignpolicysince1949.

  • 标签: 国外 对中 外交政策 中国 自主性 西方
  • 简介:Theobjectinthispaperistoconsidertheproblemofexistence,uniqueness,explicilrepresentationof(0,2)-interpolationonthezerosof(1-x2)Pn-1(x)/xwhennisodd,wherePn-1denotesLegendrepolynomialofdegreen-1,andtheproblemofconvergenceofinterpolatorypolynomials.

  • 标签: INTERPOLATION CONST UNIQUENESS details polynomial arbitrary
  • 简介:Inthepaperwediscusssomepropertiesofthestateoperatorsoftheoptimalobstaclecontrolproblemforellipticvariationalinequality.Existence,uniquenessandregularityoftheoptimalcontrol,problemareestablished.Inaddition,theapproximationoftheoptimalobstacleproblemisalsostudied.

  • 标签: 阻挡问题 处罚法 最优系统 近似问题
  • 简介:ThispaperpresentsadiscussiononaproblemsuggestedbyN.Salinas(J.OperatorTheory,Vol.10,1983),i.e.,ifT=(T1,T2,…,Tn)isacommutingn-tupleofhyponormaloperatorsonacomplexHilbertspace,dowehave(1)(2)δ(T-μ)=dist(μ,σl(T)),μ∈Cn?Itisprovedthattheproblems(1)and(2)arebothtrueforsomecommutingn-tuplesofsemihyponormaloperators.Ingeneralcase,problem(1)hasanegativeanswer.Asanap-plication,wepointoutthatthereexistsacommutingn-tupleofhyponormaloperatorsT(n≥2),suchthat|λ|<,whereσT(T)denotesJ.L.Taylor’sjointspectraofT,eveniftheconditionofTaylor’sjointspectraofTisgiven.

  • 标签: COMMUTING n-tuples of(semi)hyponormal OPERATORS Taylor’s JOINT