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193 个结果
  • 简介:Thepaperpresentsthreeformalprovingmethodsforgeneralizedweaklygroundterminatingproperty,i.e.,weaklyterminatingpropertyinarestricteddomainofatermrewritingsystem,onewithstructuralinduction,onewithcover-setinduction,andthethirdwithoutinduction,anddescribestheirmechanizationbasedonameta-computationmodelfortermrewritingsystems-dynamictermrewritingcalculus.Themethodscanbeappliedtonon-terminating,nonconfluentand/ornon-left-lineartermrewritingsystems.Theycando"forwardproving"byapplyingpropositionsintheproof,aswellas"backwardproving"bydiscoveringlemmasduringtheproof.

  • 标签: 内存驱留程序 文件系统 TRS 计算机
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  • 简介:  某日,放下充斥生活的黑人音乐,突然渴望去触碰那些很少尝试的陌生音符.其中,有五张专辑,完全被封面所吸引,上面的女性,让我不自觉的产生聆听的冲动.她们风格不同,嗓音不同,却有着让人一见钟情的CDCover,我想,她们,正是CoverGirls吧.……

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  • 简介:Inthenearfutureandseveraltimesthroughoutyourlifetime,youwillbeapplyingforajob.ThecompetitionamonggraduatrsinChinaisincreasingeveryyearsothepersonwhoknowshowtogoaboutapplyingforajobwillbeatadistinctadvantage.One

  • 标签: 英语写作 求职信 写作技巧 主题思想
  • 简介:在高中英语教材中多次出现动词“COVER”一词,它的词义广泛,用法灵活,使许多同学深感不解。现将该词的用法作一简单的归纳,以飨读者。

  • 标签: 用法 高中英语 读者 动词 同学 教材
  • 简介:拍拍球杆的灰尘,振作疲惫的精神,远方也许尽是坎坷路,也许要和"高才绝学"走一程。THISMONTH让我们继续奔前程……"明星挥杆学校"迎来了MikeSkinner同学;RorySbbatini同学将为大家示范他的挥杆连贯动作;JeffRitter教练从"武士道"精神里领悟了一些高尔夫哲理……

  • 标签: 球杆 灰尘 精神 绝学 坎坷
  • 简介:紫外(紫外)放射穿上重要效果生态系统,环境,和人的健康,以及大气的过程和气候变化。二紫外放射数据集在这份报纸被描述。一个人时时包含从2005~2015在40个中国生态系统研究网络车站测量的紫外放射的观察。CUV3宽带辐射计被用来观察紫外放射,与5%的精确性,它满足世界气象学组织测量标准。极值方法被用来控制测量数据集的质量。另外的数据集包含用与一个混合模型相结合的一个所有天空评价模型是计算的每天累积的紫外放射估计。从1961~2014的重建的每天紫外的放射数据跨度。吝啬的绝对偏爱错误和root-mean-square错误至多比30%小吝啬的偏爱错误价值的车站,和大多数是否定的,它显示紫外放射紧张的低估。这些数据集能在紫外放射改进我们空间、时间的变化的基本知识。另外,这些数据集能在潜力的研究被使用臭氧形成和大气的氧化,以及生态的进程的模拟。

  • 标签: 紫外线辐射 辐射数据 中国 生态系统研究站 覆盖 世界气象组织
  • 简介:Thispaperaimstoachieveanalysisandexperimentresultsthatrelatetomechanicscapabilityandstructuralparameterofaspecialsaddleshellofrevolution.Theoreticallyspeaking,thesaddleshellofrevolutionconsistsofatoroidalshellandasphericalshell.Theshellssimultaneousequationscanbesolvedwithharmoniousterms.Where,thefundamentalequationscanbesolvedbyasymptoticexponentialperturbationmethod.TheequationsofspecialsolutioncanbesolvedbyHovozhilovsspecialsolution.Thisnewideaisfromastudyofsomeexistingsolutionsofthetoroidalshell.Theresultshavebeenprovedbycomparedwithsomeexperimentalresults.Theexperimentsaimstostudytheeffectcausedbychangeofmaterialparameter,orbychangeofdifferentgeometricdimensionsofthesaddleshell,whichincludethechangeofthickness,thechangeofradiusofshell,andthechangeofribs.Finally,theacceptedproductofthesaddleshellwerereinforcedbyatoroidalribhasbeensubmitted.

  • 标签: 潜艇结构 船舶外壳 环形壳 球形壳 微扰理论
  • 简介:Organizedby:BeijingNormalUniversity,NationalNaturalScienceFoundationofChinaHostedby:InstituteofResourcesScience,BeijingNormalUniversityKeyLaboratoryofEnvironmentalChangeandNaturalDisaster,MinistryofEducationofChinaTopics:1)DetectingandmonitoringLUCC2)Temporal-spatialcharacteristicsinLUCC3)DrivingmodelforLUCC4)ForecastingandmodelingLUCC5)PhenologicalandbiochemicalresponseonLUCC6)RegionalLUCCandmicroclimate7)LUCCinthecontextofglobalchange8)Impactofglobalchangeonthesustainableland-usemodelingAbstractsubmission:TheofficiallanguageofthisconferenceisEnglish.WeinvitepaperswritteninEnglishandanabstractoflessthanonepageofstandardA4sizetotheConferenceSecretariatbyApr15,2001.RegistrationFee:280US$(300US$afterJuly15,2001)Add:No.19,XinjiekouwaiStreet,100875,InstituteofResourcesScience,BeijingNormalUniversity,Beijing,ChinaTel:86-10-62207656or62209024Fax:010-62208178http://202.112.93.50/LUCCD2001/index.htmlE-mail:Pwang@bnu.edu.cnCyh@bnu.edu.cn

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  • 简介:Thispaperpresentsanewhybridgeneticalgorithmforthevertexcoverproblemsinwhichscan-repairandlocalimprovementtechniquesareusedforlocaloptimization.Withthehybridapproach,geneticalgorithmsareusedtoperformglobalexplorationinapopulation,whileneighborhoodsearchmethodsareusedtoperformlocalexploitationaroundthechromosomes.Theexperimentalresultsindicatethathybridgeneticalgorithmscanobtainsolutionsofexcellentqualitytotheprobleminstanceswithdifferentsizes.Thepuregeneticalgorithmsareoutperformedbytheneighborhoodsearchheuristicsprocedurescombinedwithgeneticalgorithms.

  • 标签: 混合遗传算法 局部改善 NP完全问题 图论 顶点覆盖问题
  • 简介:Thispaperbrieflysummarizestheworksintheprocessingofstronggroundmotiondata,thefactorsaffectingstronggroundmotion,themodelingofstronggroundmotionandthecalculatingofbroad-bandresponsespectrumwhichhavebeendonerecentyearsbyengineeringseismologistsandseismologistsofChina.Inaddition,wethinkbacktotheinternationalcooperationinstronggroundmotionoftherecentyearsandmakesomeexpectationsforthefuture.

  • 标签: 强地面运动 调查研究 地震观测结果 数据处理 地震学 中国
  • 简介:JinheHydropowerStation(Changdu,Tibet),thekeyprojectsetinthe10thFive-yearPlaninTibet,hasbegunconstructiononDecember6,2001.ThediversiontypestationissituatedontherightbankofLancangRiver,withintheboundariesofChangduCounty.Itisaninterbasindevelopedprojectwitha

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