简介:Thispaperreportsonalaboratory-basedstudycarriedouttoevaluatetheeffectivenessofsurfacetreatmentsonthedurabilityofconcreteandsuggestsanumberofdifferentevaluationmethodologiesforassessingtheperformanceofvarioussurfacetreatments.Durabilityofuntreatedandtreatedconcretespecimenswasevaluatedbymeasuringchloridediffusion,chargepassingcapacity,airpermeabilityandwaterabsorption.Atotalofsixconcretesurfacetreatmentswereselectedtorepresentdifferentgenerictypes,includingcoating,penetrantandmixed-usetreatments.Resultsshowthattheconcretespecimenswithacoatingprocedurehaveabetterlong-termperformanceandeffectivenessthanthespecimenswiththepenetranttreatments.Thisworkalsoindicatesthatthewettinganddryingcyclestestcanbeusedtoassesstheweatherabilityofthesurfacetreatments.TheASTMC1202andtheAutoclamairpermeabilitytestcanbeusedtoevaluatetheeffectivenessofsurfacetreatmentsquantitatively.Furtherworkisneeded,however,toassessthelongevityofthevarioussurfacetreatments.
简介:TheMOSIXextensionstotheLinuxOperatingSystemallowthecreationofhigh-performanceLinuxFarmsandanexcellentintegrationoftheseveralCPUsoftheFarm,whosecomputationalpowercanbefurtherlyinereasedandmademoreeffectivebynetorkingthemwithintheGRIDenvironment.Followingthisstrategy,westartedtoperformcomputationaltestsusingtwoindependentfarrmswithintheGRIDenvironment.Inparticular,weperformedapreliminaryevaluationofthedistributedcomputingefficiencywithaMOSIXLinuxfarminthesimulationofgravitationalwavesdataanalysisfromcoalescingbinaries.Tothistask,twodifferenttechniqueswerecompared.theclassicalmatchedfilterstechniqueandoneofitspossibleevolutions,basedonaglobaloptimisationtechnique.
简介:
简介:采用恒星形成的观察分布在剩余的框架评估Lyman裂缝星系(LBG)的andhalf光半径紫外,我们以经验为主地为LBG调查预言的星的集体功能。一座山峰在1.5附近在质量存在,这被发现为他们的星的集体功能并且在那里的x10(10)M(圆点)是比10高的LBGswith星的群众(11)的重要数量在类似于3的z的M(圆点)。在那里,为LBG人口的二个家庭应该被红外线的数组照相机(IRAC)观察(它是在红外线的空间的一台关键仪器望远镜Spitzer),一个人是红的,其它是蓝的,它与最近的工作一致。而且,为有不同星的群众的LBG的预言的comoving关联长度,即,与不同8亩m大小,也被讨论。红LBG应该比蓝LBG更强烈在空间被聚类。这些预言能被IRAC的观察测试,并且将在当前的层次星系形成模型上提供强壮的限制。
简介:Thoughthemethodofcitizenparticipationinurbanplanningisquitewellestablished,foraspecificsegmentofresidentialenvironment,however,existingparticipationsystemhasnotcopedadequatelywiththeissue.Thespecificresidentialenvironmenthasdetailedaspectsthatneedpositiveandhighlevelinvolvementofthecitizensinparticipatinginallstagesandeveryfieldoftheplan.Oneofthebestandsystematicmethodstoobtainamoreinvolvedcitizenisthroughacitizenworkshop.Togetamore'educated'citizenwhoparticipatesintheworkshop,aspecialsessiontoinformthecitizenonwhatwaspreviouslygatheredthroughasurveywasrevealedtobeprerequisitebeforetheworkshop.Thecomputersupportsystemisoneofthebesttoolsforthispurpose.Thispaperdescribesthedevelopmentofthecomputersupportsystemforresidentialenvironmentevaluationsystem,whichisanessentialtooltogivemoreinformationtothecitizensbeforetheirparticipationinpublicworkshop.Thesignificantcontributionofthispaperistheeducationalsystemframeworkinvolvedintheworkshoponthepublicparticipationsystemthroughcomputersupport,especiallyforresidentialenvironment.Theframework,developmentandapplicationofthecomputersupportsystemaredescribed.Theapplicationofaworkshoponthecomputersupportsystemwascommentedonasveryvaluableandhelpfulbytheaudienceasitresultedingreaterbenefittohavewiderrangeofparticipation,anddeeperlevelofcitizenunderstanding.
简介:Concreteinreinforcedconcretestructure(RC)isgenerallyundersignificantcompressivestressload.Toguaranteerequiredqualityandductility,varioustestshavetobeconductedtomeasuretheconcrete'scompressivestrengthbasedonACI(AmericanConcreteInstitute)code.Investigationsofrecentdevastatingcollapsesofstructuresaroundtheworldshowedthatsomeofthecollapsesdirectlyresultedfromthepoorqualityoftheconcrete.Thelessonlearnedfromthesetragediesisthatguaranteeinghighqualityofconcreteisoneofthemostimportantfactorsensuringthesafetyofthereinforcedconcretestructure.Inordertoensurehighqualityofconcrete,anewmethodforanalyzingandevaluatingtheconcreteproductionprocessiscalledfor.Inthispaper,theindicesoffitandstabledegreeareproposedasbasistoevaluatethefitnessandstabilityofconcrete'scompressivestrength.Thesetwoindicesarecombinedtodefineandevaluatethequalityindexofthecompressivestrengthofconcrete.Principlesofstatisticsareusedtoderivethebestestimatorsoftheseindices.Basedontheoutcomeofthestudy,aconcretecompressivestrengthqualitycontrolchartisproposedasatooltohelptheevaluationprocess.Finally,anewevaluationproceduretoassessthequalitycontrolcapabilityoftheindividualconcretemanufacturerisalsoproposed.
简介:由使用修改印射的方法,我们发现Petviashvili方程的新准确答案。在这篇论文获得的解决方案包括Jacobian椭圆形的函数解决方案,联合Jacobian椭圆形的函数解决方案,soliton解决方案,三角形的函数解决方案。
简介:multiverse是创造在宇宙论解决某些问题的一个假设。当前,这个计划大部分仍然是特定的,而非源于基本法律和原则。因为这,这个理论的预兆的力量是相当有限的。而且,有担心,这个理论将使计算一些测量数量不可能,例如夸克和电子的群众。在这份报纸,我们将显示出那在字符串理论的新开发,字符串理论的通用波浪函数解释,提供一个方法导出multiverse的数学表达式。我们将证明在绳理论存在的Weyl不变性显示我们的观察宇宙是从一张全息图的设计。我们将介绍物理的法律怎么能从这个事实被导出。而且,我们建议计算象夸克和电子那样的基本粒子的群众可以也提供一个方法。
简介:Inthispaper,anewmodifiedextendedtanh-functionmethodispresentedforconstructingsoliton-like,periodicformsolutionsofnonlinearevolutionequation(NEEs).Thismethodismorepowerfulthantheextendedtanhfunctionmethod[Phys.Lett.A277(2000)212]andthemoditiedextendedtanh-functionmethod[Phys.Lett.A285(2001)355].AbundantnewsolutionsoftwophysicallyimportantNEEsareobtainedbyusingthismethodandsymboliccomputationsystemMaple.