什么是软件项目管理.pptgenericphasesofsoftwareengineeringLayeredSoftwareEngineeringSoftwareProcessModelsToolsandtechniquesforprocessmodeling:Staticmodeling(Lainotation)anddynamicmodeling(systemdynamics)??,?1995年SEI统计,美国共取消了810亿美元的商业软件项目,其中31%的项目未做完就被取消,53%的软件项目进度通常要延长50%的时间,只有9%的软件项目能够及时交付并且费用也控制在预算之内。2000年Tech Republic公司发表了有关IT项目的调查结果。该调查是以北美的1375个IT专家为对象实施问卷调查进行的。根据此调查,IT项目中有40%失败,这些项目的平均成本每年花费100万美元。……,ifapostmortemweretobeconductedforeveryproject,itisverylikelythataconsistentthemewouldbeencountered:,customershaveseveralquestionstobeanswered:Doyouunderstandmyproblemsandmyneeds?Canyoudesignasystemthatwillsolvemyproblemorsatisfymyneeds?Howlongwillittakeyoutodevelopsuchasystem?Howmuchwillitcosttohaveyoudevelopsuchasystem?:someevents,:Aactivityisapartoftheprojectthattakesplaceoveraperiodoftime;:::::::PlantingshrubsandtreesPhase1::::::::::::AnchorthetreesandmulcharoundthemPhase2:BuildingtheHouseStep2
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