简介:SustainableeconomicrecoveryintheU.S.hascreatedafavorableenvironmentfortheFederalReserve(Fed)’staperingpolicy,butthisoperationfacesmanydifferenttypesofrisk.ChinashouldseizethecurrentopportunitywhiletheFedtapersoperationstocarveoutcountermeasuresinordertowithstandeconomicriskandenhanceitscapacitytowardofffinancialshock.
简介:大、复杂的建设从各种各样的来源投射脸风险,如此的工程的成功的结束取决于有效风险管理。这研究调查参予在中国构造AP1000核电厂的中国公司面对的风险。AP1000核反应堆是新的,产生III+反应堆由Westinghouse并且到设计了在中国首先被造。半结构化的会见途径被用来从在中国涉及AP1000工程的专家得到信息。基于会见,风险的各种各样的来源被识别。通常除了将军冒险那megaprojects脸,有唯一的风险,从象工艺、政治、组织上、单个的人员风险那样的各种各样的来源产生。风险管理策略被建议管理在学习识别的一般、唯一的风险。这研究的调查结果将对涉及AP1000核电厂的构造减轻与工程联系的风险的中国公司有用。
简介:Thispapersummarizesthelatestdevelopments,futureprospects,andproposedcountermeasuresofreservoirsedimentationandchannelscourdownstreamoftheThreeGorgesReservoir(TGR)ontheYangtzeRiverinChina.Threekeyresultshavebeenfound.(1)TheincomingsedimentloadtotheTGRhasbeensignificantlylowerthanexpected.(2)TheaccumulatedvolumeofsedimentdepositionintheTGRissmallerthanexpectedbecausetheoverallsedimentdeliveryratioisrelativelylow,andthedepositioninthenear-damareaoftheTGRisstilldeveloping.(3)RiverbedscourintheriverreachesdownstreamoftheGezhoubaDamisstilloccurringandchannelscourhasextendedtoreachesasfardownstreamastheHukoureach.Significantly,sedimentationoftheTGRislessproblematicthanexpectedsincethestartofoperationoftheTGRontheonehand;ontheotherhand,thepossibleincreasesinsedimentrisksfromdependenceonupstreamsedimentcontrol,depositioninthereservoir,andscouralongmiddleYangtzeRivershouldbepaidmoreattention.(1)SedimenttrappedbydamsbuiltalongtheupperYangtzeRiverandbilliontonsofloosematerialsonunstableslopesproducedbytheWenchuanEarthquakecouldbenewsedimentsourcesfortheupperYangtzeRiver.Moreseriously,possiblereleaseofthissedimentintotheupperYangtzeRiverduetonewearthquakesorextremeclimateeventscouldoverwhelmtheriversystem,andproducecatastrophicconsequences.(2)IncreasingsedimentdepositionintheTGRisharmfultothesafetyandefficiencyofprojectoperationandnavigation.(3)ThedrasticscouralongthemiddleYangtzeRiverhasintensifiedthedown-cuttingoftheriverbedanderosionofrevetment,ithasalreadyledtoincreasingrisktofloodcontrolstructuresandecologicalsafety.ItissuggestedtocontinuetheFieldObservationProgram,toinitiateresearchprogramsandtofocusonrisksofsedimentation.
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简介: [摘要]文章基于冯胜利教授的语体语法理论,探索了非正式语体的表达方式“V一V”,使学生浸染在温柔、轻快、具有语境靶向的课堂环境教学氛围当中,可以有效体会编者所用的语言特性,从而积极运用编者的语言思维来改善和提高语言教学的课堂效率。