简介:摘要: 预制箱梁在桥梁工程中扮演着重要的角色,然而传统箱梁施工技术在一些方面存在着局限性,如施工效率低、施工质量难以保证等问题,为了解决这些问题,近年来,抽拉式内模技术逐渐被引入到预制箱梁的施工中,其可以有效提高施工效率、降低施工难度,从而提高预制箱梁施工质量和效率。传统箱梁施工中的一个主要问题是模板的拆除困难,容易导致施工周期延长和施工质量下降,传统方法中采用人工拆模的方式,不仅劳动强度大而且容易出现模板拆除不均匀、损坏等情况,影响施工质量,因此有必要探索新的施工技术,提高模板拆除的效率和质量。
简介:<正>SupposeXisasuperdiffusioninRdwithgeneralbranchingmechanism¢.andYDdenotesthetotalweightedoccupationtimeofXinaboundedsmoothdomainD.WediscusstheconditionsonψtoguaranteethatYDhasabsoluteycontinuousstates.Andforparticularψ(z)=z(l+,0DisabsolutelycontinuouswithrespecttotheLebesguemeasureinD.whereasinthecased>2+2/B.itissingular.AsweknowtheabsolutecontinuityandsingularityofY(Dhavenotbeendiscussedbefore.
简介:Thetopicof"China’sforeignpolicyundernewcircumstances"fordiscussionraisedbyExpertsForumofContemporaryInternationalRelationsisveryimportant,becausesituationdeterminestasks,tasksproducepoliciesandforeignpolicyisthecontinuationofdomesticpolicy.
简介:<正>ChinesePresidentXiJinpingpaidstatevisitstofourCentralAsiancountriesnamelyKazakhstan,Kyrgyzstan,Turkmenistan,UzbekistanandattendedtheShanghaiCooperationOrganizationSummitinBishkek,KyrgyzstaninSeptember,2013.OnSeptember7,PresidentXideliveredaspeechatNazarbayevUniversity,duringwhichheputforwardtheimportantinitiativeofjointly
简介:CRITICALSTOPPINGTIMESANDSEMIMARTINGALESOFSTOCHASTICPROCESSESHuBijin(胡必锦)(DepartmentofMathematicsHUSTWuhan,HubeiP.R.C.3.1992)A...