文档介绍：DiagramRepresentation:******@,sincethesubmissionofthisthesis,,,forwhomIhadthedeepestrespect,,Iwouldliketothankmysupervisor,MikeScaife,whohasinspiredmyinterestsandprovidedperceptiveguidanceofmyresearch,bothfacilitatingthedevelopmentandevolutionofmythesis,,Mikehasalwaysbeencontinuallyunderstanding;supportiveandencouraging,,DavidWeir,forhisdevotedsupportandencouragement,andhissustainedfaithinme,,HighPrice,:YvonneRogers,JohnHalloran,HarryBrignull,:AndyFieldforstatisticsadvice,TonyStubbens,ClaireBrewer,,munityCollege,WardenParkSchool,PatchamHighSchool,,,HughPriceandTheRayneFoundation,,theresearchwassupportedbytheEconomicandSocialResearchCouncil,UK(),:putertechnologyprovideexciting,innovativewaysofrepresentingandinteractingwithinformation,