简介：摘要目的探讨U波倒置的临床意义。方法对156例心电图发现U波倒置患者的临床资料进行回顾性分析。结果U波倒置90.4%为某种器质性心脏病所致,最常见于冠心病(46.8%)及高血压(34%)患者。结论U波倒置是揭示心脏病存在的一种高度特异性指标,对心脏病的诊断及治疗具有重要的意义。

简介：NK7U芯片组采用nForce2U400+MCP．可以支持400MHzFSB，支持3条DIMM双通道DDR400内存插槽．最大可扩充至3GB，支持AGP8X，提供了一个AGP插槽，5条PCI插槽，一个S／PDIF同轴输出口，四个USB2．0接

简介：InordertodevelopChina-U.S.relations,wemustenhancestrategicmutualtrust.Butthestrengtheningofmutualtrustcannotbeachievedovernight.Besides,duetodifferencesinhistory,nationalinterestsanddevelopmentstrategy,theleveloftrustthatthetwocountriescanreachislimited.Then,underthepremisethatstrategicdifferencesexistbetweenChinaandthe

简介：<正>U-KISS是韩国目前很红的7人偶像组合,出道至今共出版了6张专辑,风格各具特色。而目前他们正处于定位变化阶段。经历了亚历山大和金起范退队,新成员Hoon和AJ加入的人事变动后,U-kiss推出了他们的正式二辑回归韩国舞台,专辑的销量和歌曲打榜的成绩都十分亮眼,经历了不少曲折的u-kiss,一直坚持着以他们的组合名字含义"成为韩国的乃至世界的无处不在的超级明星"为目标。出道初

简介：正AttheinvitationoftheUniversityofMississippi,FriendshipForceInternationalandtheNorthAmericaAssociationforInternationalExchanges,Mr.DuKening,DeputySecretary-GeneralofCAFIU,leadinga3-memberworkinggroupvisited

简介：SincethedisintegrationoftheformerSovietUnion,theUnitedStatesandRus-siahavegonethroughatortuousroadinforgingtheirpost-ColdWarrelation-ship.Atpresent,theyareneitherbipolarrivals,norstrategicpartnersasinitiatedinearly1990s.Theyhaveinsteadturnedfrommaintainingamicabilityintocopingwiththereality.Theirdiscrepanciesintermsofstrategiesandbilateralrelationshaveemergedoneafteranotherinrecentyearsandbecameintensifiedespeciallyaf-terOperationDesertFoxagainstIraqbytheUnitedStatesandBritainand

简介：在3月10日开幕的CeBIT2005德国汉诺威电脑展上，风传一段时日的搭载512MB超大容量显存的GeForce6800Ultra顶级显卡终于正式登场，以下就是nVIDIA一级合作厂商XFX调景给我们带来的惊喜，配备有512MB显存的GeForce6800Ultra是当今最快的3D显卡标志，也是最高画质下游戏流畅运行的保证，更是顶级发烧友最值得拥有和炫耀的设备。

简介：Analysisoftheissuecallsforsomequestionsofmethodology.First,thelawofhistoricaldevelopmentteachesthatallcountries,nomatterhowstrongtheymaybe,willeventuallydecline.SothepointisnotwhethertheUnitedStateswillbeanexception,butwhenandhowwillthedayofreckoningdescendontheworld'scurrentsolesuperpower.

简介：1.ThedevelopmentofChina-U.S.relationsin2007willbeinfluencedmainlybythefollowingfactors:(1)ThetrendofU.S.economicdevelopment;(2)ThechangesinU.S.domesticpolitics;(3)theIraqissue;(4)TheTaiwanquestion;(5)ThewayChinadealswithChina-U.S.relations.

简介：BarackObamabecamethefirstAfricanAmericanpresidentcallingforchange.Heisnotonlyfacedwithseriouschallengesontheeconomicandfinancialfronts,butalsohastodealwithavarietyofmajorsocialproblemswhichwillpotentiallyreshapeAmericansocietyinthe21stcentury:increasingeconomicinequality,complexracerelations,anunsustainablehealthcareburdenandaweakeningeducationsystem.TheseareissueswhichhaveexistedfordecadesintheU.S.,butnowitseemsthatPresidentObamahasabetteropportunitytomakea'realchange'happenthanhispredecessors,becauseAmericansocietyisgoingthroughafundamentalevolution.

简介：SinceGeorgeW.Bushassumedthepresidencyinearly2001,atensesituationhadoccurredintherelationshipsamongworldbigpowers.IntheaftermathofSeptember11,significantimprovementhasbeenmadeinSino-U.S.andRussia-U.S.relations.Inthemeantime,correspondingchangeshavetakenplaceinEU-U.S.andRussia-Chinarelations.

简介：这款手机采用3.2英寸HVGA高分辨率显示屏，虽然不是智能平台，但功能配置比较全面，尤其是多媒体方面支持不错，它带有300万像素摄像头，采用了3．5mm耳机接口，可以播放RMVB格式的影片。

简介：WhilethepresidentialelectionalreadydrewtoacloseinRussiaonMarch2,2008,theelectionsinAmericahavenotkickedoffforrealyetwithpresidentialcandidatesstillvyingwitheachotherintheprimaries.Ontheonehand,VladimirPutinandthe

简介：Aconvergingpointhasemergedonthehorizon,withanincreasingnumberofcallsforbuildingChina-U.S.+XmechanismsamongChinesescholars,andaveritablezealforinitiatingaROK-U.S.-ChinadialoguefromPresidentParkGeun-hyeofSouthKorea.Thispaperintendstoexplorethepossibilityofsuchatrilateraldialogueandcooperationarrangement,byanalyzingthebackgroundtothetrilateralrelations,theirrespectivestanceandconsiderations,aswellasanyhurdlesinvolvedintheprocess.

简介：

简介：Modelinglog-mortalityratesonO-UtypeprocessesandforecastinglifeexpectanciesareexploredusingU.S.data.IntheclassicLee-Cartermodelofmortality,thetimetrendandtheage-specificpatternofmortalityoveragegrouparelinear,thisisnotthefeatureofmortalitmodel.Toavoidthisdisadvantage,O-Utypeprocesseswillbeusedtomodelthelog-mortalityinthispaper.Infact,thismodelisanAR(1)process,butwithanonlineartimedriftterm.BasedonthemortalitydataofAmericafromHumanMortalitydatabase(HMD),mortalityprojectionconsistentlyindicatesapreferenceformortalitywithO-UtypeprocessesoverthosewiththeclassicalLee-Cartermodel.Bymeansofthismodel,thelowboundsofmortalityratesateveryagearegiven.Therefore,lengtheningofmaximumlifeexpectanciesspanisestimatedinthispaper.

简介：摘要：“创新是一个民族的灵魂”，随着人工智能的不断发展和深化，小学信息技术课程标准中添加了程序设计模块，目标是为了让孩子理解编程的基本思想，培养学生发现问题、分析问题、解决问题和学生的创造能力。

简介：OriginDublin,IrelandGenresAlbumRock(专辑摇滚)AlternativePop/Rock(另类流行/摇滚)CollegeRock(学院摇滚)Pop/Rock(流行/摇滚)Post-Punk(后朋克)MembersPaulHewson(laternicknamed"BonoVox"andeventuallyjust"Bono",bornMay10,1960)DaveEvans(laternicknamed"TheEdge",b.August8,1961)AdamClayton(b.March13,1960)LarryMullen,Jr.(b.October31,1961)能够在20多年里不断取得商业上的成功同时又受到乐评人认可的乐队,全世界并没有几个,而U2正是这少数中的一员。U2将自己的音乐理念和商业因素结合,在音乐界取得了非凡的成就。从乐队创建之初一直到现在,U2打破了摇滚乐队和摇滚乐的固有界限,他们用原创音乐配以诚恳的歌词,探讨敏感的社会话题,赢得了同行和乐评人的尊敬,在全世界拥有无数狂热的支持者。下面就是他们的故事。

简介：AheateddebatearoseonthenatureofChina-U.S.relationsamongscholarsinthetwocountries.Arethetwo"strategicpartners"?"Competitors"?"Neitherfriendsnorenemies"?Oreven"Potentialenemies"?Butlargelysince1997,alongwiththeestablishmentoftheframeworkfor"aconstructivestrategicpartnership",thedefinitionseemstohasbeenacceptedbythemainstreamintheChineseacadem-iccircle.Bycontrast,GovernorGeorge.W.Bush,theRepublicanpresidential

简介：WhentheU.S.militarybrassassertedinmid-2014thattheproposeddefensecutbackswereunacceptable,theysignaledtheObamaadministrationthattheywouldnotrolloverandplaydeadwhilemilitaryspendingwascutbybillionsofdollarsinthecoming10years.Theterms"sequestration"and"OCO"wereusedrepeatedlyintheirspeechesand