简介:摘要介绍了最新的基于MVCModel2的Struts2框架,分析了Spring框架的容器特性,研究了Struts2和Spring的整合开发策略,最后结合实例详细介绍了利用整合框架进行Web应用开发的具体流程和关键技术。
简介:摘要当前,在城市建设发展的过程中,对于建筑质量的要求越来越高。给排水工程作为建筑工程的一个重要组成部分,其施工水平直接关系到建筑工程的整体质量。然而,在实际的施工过程当中,仍然会有一些问题出现,如管道堵塞、管道渗漏等问题。所以,对于给排水施工应当加强管理,使得工程的质量得到充分的保证。基于此,文章就建筑工程给排水施工常见问题与优化对策进行简要的分析,希望可以提供一个借鉴。
简介:Embodiedcarbonintradehasattractedtheattentionofresearchers,developers,andindustryleadersworldwide,asithasbecomeaconsiderablesourceoftradeconflict.BecauseChinaistheworld’sleadingcarbon-emittingcountry,itisimportanttostudythechangetrendsofembodiedCO2inChinesetradetoidentifykeyinfluencingfactors.ThispaperinvestigatesthetradeembodiedCO2inChina,withspecialfocusontheproductionprocessandmaterialsofeachindustrialsectorfrom1990to2013.Thisstudywasconductedbyusinganinput-outputmodel,whichanalyzesthespecificcausesofperiodicwaves.Ourfindingssuggestthatthemachinemanufacturingsectorproducedthelargestshareofemissions,whereasthemetalandnon-metalsectorhasthehighestemissionintensity.Moreover,thetotalemissionquantitiesintradeincreasedfrom612to3331milliontonsin1990to2013,aperiodcharacterizedbydecentralizedtrendsinemissionsexportedtotradepartners.Wealsoemployedthelog-meanDivisiaindex(LMDI)modeltodecomposethecarbonemissionschangesintoexportstructure,exportscale,energystructure,andenergyintensity,andestimatetheinfluenceofthesefactorsatanumberoftimepoints.Wefoundthatenergyintensitycurbsemissionsincrease,andthatexportscaleexpansionisthestrongestdrivingforce.