简介：七月雅思考试日历,英孚教育最新事件,新托业考试登陆中国,S．H．E全新“玩乐”专辑《PLAY》在京召开发布会,法国LEPHIL时尚羽绒服2007年秋冬流行趋势发布.

简介：英孚教育最新事件；九月雅思考试日历；沪江6岁生日到，沪友纷纷献贺礼；柏林——越来越多的中国游客向往的城市；INTHEMOODFORLOVE——斯贝瑞[享受]2周年庆典.

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简介：Amega-eventwhichattractsattentionfromallovertheworldmighthavebothpositiveandnegativeeffectonthehostingcity(Symeetal.1989).Theaimofthispaperistoevaluatethecostsandbenefitsofbiddingforthehostingofmegaevents.Itidentifiedlegaciesofbiddingforthehostingofmegaeventsfromfollowingfouraspects,whichareeconomics,publiclife,infrastructure,andimageofthehostingcity,withthemethodsofliteraturereview,logicanalysis,examples,andcontrastanalysis.Theresultofthisstudyunveiledthatwhenacitybidsforhostingamega-eventforthepurposeofstimulatingitslocaleconomic,improvingcivicpride,developingbasicpublicinfrastructures,andenhanceitscityimagetotheworldwide,italsoneedstopayattentiontopotentialdrawbacksofhostingtheevent,suchasdebtcrisis,interferingthedailylifeofthepublic.

简介：Asecond-ordermixingdifferenceschemewithalimitingfactorisdeducedwiththereconstructiongradientmethodandappliedtodiscretizingtheNavier-Stokesequationinanunstructuredgrid.Thetransformofnonorthogonaldiffusionitemsgeneratedbytheschemeindiscreteequationsisprovided.TheDelaunaytriangulationmethodisimprovedtogeneratetheunstructuredgrid.ThecomputingprogrambasedontheSIMPLEalgorithminanunstructuredgridiscompiledandusedtosolvethediscreteequationsoftwotypesofincompressibleviscousflow.Thenumericalsimulationresultsofthelaminarflowdrivenbylidincavityandflowbehindacylinderarecomparedwiththetheoreticalsolutionandexperimentaldatarespectively.Intheformercase,agoodagreementisachievedinthemainvelocityanddragcoefficientcurve.Inthelattercase,thenumericalstructureanddevelopmentofvortexunderseveralReynoldsnumbersmatchwellwiththatoftheexperiment.Itisindicatedthatthefactordifferenceschemeisofhigheraccuracy,andfeasibletobeappliedtoNavier-Stokesequation.