Thiseditioncontainsalargenumberofadditionsandcorrectionsscattered
throughoutthetext,includingtheincorporationofanewchapteronstate-spacemodels.ThecompaniondiskettefortheIBMPChasexpandedintothesoftwarepackageITSM:AnInteractiveTmeSeriesModellingPackageforth.ePC,whichincludesamanualandcanbeorderedfromSpringer-Vertag.*
Weareindebtedtomanyreaderswhohaveusedthebookandprogramsandmadesuggestionsforimprovements.Unfortunatelythereisnotenoughspacetoacknowledgeallwhohavecontributedinthisway;however,specialmentionmustbemadeofourprize-winningfault-finders,SidResnickand
F.Pukelsheim.SpecialmentionshouldalsobemadeofAnthonyBrockwell,whoseadviceandsupportoncomputingmatterswasinvaluableinthe
preparationofthenewdiskettes.WehavebeenfortunatetoworkontheneweditionintheexcellentenvironmentsprovidedbytheUniversityofMelbourneandColoradoStateUniversity.WethankDuaneBoesparticularlyforhissupportandencouragementthroughout,andtheAustralianResearchCouncilandNationalScienceFoundationfortheirsupportofresearchrelatedtothenewmaterial.WearealsoindebtedtoSpringer-Verlagfortheirconstantsupportandassistanceinpreparingthesecondedition.