简介:In1997,IGCPProjectNo.410wasestablishedtoappraiseknownrecordsofOrdovicianbiotas,inordertoevaluateoneofthegreatest-everdiversificationsoflifeonEarth,between489and443millionyearsago.Datacollectionandanalysisofbiodiversitywerecoordinatedthroughsevenregionalteams,andaglobal“clade”team.
简介:Astudyontheagent-basedword-recognitionlearningsystemforpupilswithmoderatementalretardation.AsystemforlearningXQueryqueriesbasedonexampleoperations.AWeb-BasedLanguageLearningSystem.AWWW-basedcooperativelearningsystemanditseffectsonstudents'achievement,Anadaptivereal-timemultimediadistancelearningsystembasedoncomputersupportedcollaborativework.