Notification mechanism enhances collaboration as enables dynamic federation of relevant objects to be automatically maintained
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Kodak would like this service to group together digital versions of photographs taken at particular events (e.g. a wedding)
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Notification can be used for people so their presence on-line can be made known to those in particular collaborative users
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Users decide if notification causes an active signal (send electronic mail, ring a buzzer) or passively alters a list on a web page.
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Event Model unifies synchronous and asynchronous models of collaboration
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Event either triggers action immediately and/or asynchronously ( sending e-mail immediately is synchronous act generating asynchronous record)
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