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简介：天体的跨matching是为聚集不同波长的观察数据的一个基本方法。由数据聚集，天体的目标的性质能包括地被理解。在减少瞄准时间在I/O上消费了操作，几个改进方法被介绍，基于养模特儿的边界包括处理流动，它能减少数据库询问操作；能改进任务分区的表演并且解决数据稀少的问题的最大的成长块和它的决心的一个概念；并且计算这个索引的一个快bitwise算法附近的块数，它是一条重要效率保证。实验证明方法能有效地在稀少的数据集和高密度的数据集上加快跨matching。

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简介：Background:Motorcompetenceandhealth-relatedfitnessareimportantcomponentsforthedevelopmentandmaintenanceofahealthylifestyleinchildren.Thisstudyexaminedcross-culturalperformancesonmotorcompetenceandhealth-relatedfitnessbetweenPortugueseandU.S.children.Methods:Portuguese(n=508;10.14±2.13years,mean±SD)andU.S.(n=710;9.48±1.62years)childrenperformedtestsofcardiorespiratoryfitness(ProgressiveAerobicCardiovascularEnduranceRun),upperbodystrength(handgrip),locomotorskillperformance(standinglongjump),andobjectprojectionskillperformance(throwingandkicking).PortugueseandU.S.childrenweredividedinto2agegroups(6à9and10à13years)fordataanalysispurposes.Atwoàfactoroneàwayanalysisofcovariance(ANOVA)wasconductedwiththeProgressiveAerobicCardiovascularEnduranceRun,handgrip,standinglongjumpscores,kicking,andthrowingspeed(km/h)asdependentvariables.Results:ResultsindicatedthatPortuguesechildren,irrespectiveofsex,presentedbetterperformancesinlocomotorandcardiorespiratoryperformance(standinglongjumpandProgressiveAerobicCardiovascularEnduranceRun)thanU.S.childreninbothagebands.U.S.childrenoutperformedPortuguesechildrenduringthrowingandhandgriptests.Kickingtestspresentedgenderdifferences:PortugueseboysandU.S.girlsoutperformedtheirinternationallymatchedcounterparts.Conclusion:Culturaldifferencesinphysicaleducationcurriculaandsportsparticipationmayimpactdifferencesinmotorcompetenceandfitnessdevelopmentinthesecountries.

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简介：便携式音乐播放器确实可以使我们享受美妙的音乐，但耳朵却要为此付出相当大的代价……

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简介：Thispaperpresentsaninvestigationonstrengthofcementdeepmixing(CDM)mixture.Fourtypicalworksofoffshoreorland-basedprojectsareintroduced.Withsamplesfromtheseprojectsandlaboratorytests,statisticalanalysisismadeontheincrementlawofthestrengthofcement-soilmixturewithdifferentamountofcement,andstrengthsunderdifferentworkingconditionsarecompared.Itisfoundthattheamountofcementinthecement-soilmixtureiscloselyrelatedtotheunconfinedcompressivestrengthofthemixture.Attheageof90d,theunconfinedcompressivestrengthofthecement-soilmixtureincreasedby0.054Mpa-0.124Mpawitheachcementincreasing10kg/m3inthecement-soilmixture,averagelyincreasedby0.085Mpa,whilethatattheageof120dincreasedby11%incomparison.Thequalityofthecement-soilmixtureshouldbecomprehensivelyevaluatedinaccordancewiththetrimmedaverageofstrength,coefficientofvariationandrockqualitydesignation(RQD)indicatorsofsamplingratio.

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简介：BasedonthedesiltingresearchofoneschedulingprojectinthesouthwestofChina,themethodofsettinggriddesiltinggallerybeforethedesiltingtunnelisputforwardtoexpandthescopeofthescouringfunnelbeforethedamandsolvetheproblemofsedimentdepositionatthepowerstationwaterintake.Theexperimentalresultsshowthat,inthedesignofagriddesiltinggallery,thewidthofthegridgalleryshouldnotbesmallerthanthatofthedesiltingbottomintake,thesizeofthegridorificeshouldbeintherangeof1.5,m—2.0,malongtheflowdirection,andthegridspacingshouldbe3—5timesthesizeofthegridorifice.Thedischargingabilityofthedesiltingbottomintakewilldecreaseafterthegriddesiltinggalleryisadded.Theaverageofthedecreaseratesisabout5%—10%.Thescouringfunneldrawsinthelongitudinaldirectionbeforethedamobviouslyaftertheconstructionofthegriddesiltinggallery.

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简介：OnceinterviewedbyafamousInternetreporter,ShangWenjie(尚雯婕)talkedofherexperienceinEnglish-learning."Infact,youneedn’tactintheordinarywaywhilelearning

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